O2MICRO INC. Patent applications |
Patent application number | Title | Published |
20150191124 | MOUNTING SYSTEM FOR ATTACHING MOBILE DEVICE - A mounting system for mounting a device, e.g., a mobile device, is disclosed. The mounting system includes a housing component and a securing component. The housing component is configured to secure a device. The securing component is coupled to the housing component and is configured to secure the mounting system to a surface. The securing component comprises a lower mounting component configured to secure the housing component to the surface from a bottom side of the housing component. The lower mounting component comprises a first connecting portion and a first attachment device configured to attach to the surface. The first connecting portion is configured to connect the lower mounting component to the bottom side of the housing component. | 07-09-2015 |
20150188411 | DC/DC CONVERTERS AND OUTPUT CIRCUITS THEREOF - In an output circuit, a rectifying circuit outputs a rectified signal at an output node. The rectified signal has a rising edge and a falling edge. An energy storage component is coupled to the output node. A controllable path, coupled to the energy storage component, can be turned on if a voltage drop of the controllable path is greater than a voltage threshold. The controllable path can also be turned on in response to a turn-on signal. A control circuit, coupled to the controllable path, generates the turn-on signal subsequent to the rising edge of the rectified signal, and terminates the turn-on signal when a predetermined time interval expires subsequent to the generating of the turn-on signal and prior to the falling edge of the rectified signal. | 07-02-2015 |
20150188336 | Circuit and Method for Cell Balancing - A balancing circuit for balancing multiple cells in a battery. The cell balancing circuit includes a first shunt path connected in parallel to a first cell, a controller coupled to the first shunt path, a timer and a storage unit. The controller balances the cells and detects balance conditions of each cell. The timer measures pre-balance times and balance times for each cell. The storage unit stores the pre-balance times and balance times. The controller pre-balances the first cell by enabling the first shunt path for a first pre-balance time and balances the first cell by enabling the first shunt path for a first balance time if an unbalance condition of the first cell is detected by the controller, and updates the first pre-balance time for each balancing cycle based on the first pre-balance time and the first balance time from a previous balancing cycle. | 07-02-2015 |
20150091698 | ELECTRIC VEHICLES AND METHOD FOR MANAGING ELECTRIC VEHICLES - An electric vehicle and method for controlling an electric vehicle are disclosed. The electric vehicle includes a battery management system, a wireless communicating module, and a control module. The battery management system is configured for monitoring and managing a battery in the electric vehicle. The wireless communicating module coupled to the battery management system, is configured for establishing a wireless link with a portable device and for receiving an instruction associated with an access credential from the portable device through the wireless link. The control module coupled with the wireless communicating module, is configured for determining whether the access credential provides a right to control the electric vehicle based on the instruction received by the wireless communicating module and for controlling the electric vehicle according to the instruction from the portable device if the access credential provides the right to control the electric vehicle. | 04-02-2015 |
20150057928 | Method and Apparatus for Controlling An Electrical Device and a Wireless Charging Device - Method and apparatus for controlling an electrical device and a wireless charging device, each comprising one or more modules. An interrupt signal is received. A type of the interrupt signal is determined. A first module is activated based on the type of the interrupt signal to perform one or more functions. The electrical device and the wireless charging device share at least the first module. | 02-26-2015 |
20150042267 | System and Method for Controlling a Battery - System and method for controlling a battery are disclosed. The system includes a battery pack, a wireless charger, a detecting module, a measuring device and a controller. The wireless charger is configured for charging the battery pack and calculating a first charging capacity of the battery pack. The detecting module coupled to the wireless charger, is configured for detecting information associated with the charging. The measuring device is configured for calculating a second charging capacity of the battery pack. The controller is coupled to the wireless charger, the detecting module and the measuring device. The controller is configured for determining whether there is a difference between the first charging capacity and the second charging capacity. The controller is also configured for calculating a third charging capacity of the battery pack based on the information associated with the charging and the difference. The controller is also configured for adjusting the second charging capacity based on the third charging capacity. | 02-12-2015 |
20150035475 | Systems and Methods for Identifying and Monitoring a Battery Charger - A charger includes a first terminal, a second terminal and a third terminal. The first terminal and the second terminal are configured for providing an output power to a battery module. The charger also includes a signal generation unit configured for generating an identity signal which indicates an identity of the charger. The charger is configured for outputting the identity signal to the battery module via the third terminal. | 02-05-2015 |
20140372496 | METHOD FOR PERFORMING AND VALIDATING NAVIGATION BIT SYNCHRONIZATION - A method for determining bit boundary of a navigation bit of a satellite signal received by a receiver is disclosed. The method includes dividing an assumed navigation bit equally into a plurality of power units, calculating unit powers of each of the plurality of power units, and determining a plurality of phases. Each of the plurality of phases is associated with an estimated bit boundary. The method further includes adding unit powers of the plurality of power units to obtain a plurality of bit powers. Each of the plurality of bit powers corresponds to the estimated bit boundary associated with one of the plurality of phases. The bit boundary of the navigation bit is determined based on the plurality of bit powers. | 12-18-2014 |
20140348275 | SYSTEMS AND METHODS FOR ESTIMATING PSEUDORANGE ERRORS - Methods and systems for estimating pseudorange error are described. A method for estimating a pseudorange error includes generating a plurality of coarse/acquisition (C/A) codes corresponding to a satellite according to intermediate frequency (IF) signal data obtained from the satellite. The method further includes determining autocorrelation values for each of the plurality of C/A codes with the IF signal data; obtaining a first time-shifted value of a first prompt C/A code and a second time-shifted value of a second prompt C/A code corresponding to a maximum autocorrelation of the autocorrelation values; and determining a pseudorange error based on the first time-shifted value, the second time-shifted value, and the autocorrelation values. The plurality of C/A codes may include the first prompt C/A code, early C/A codes advanced relative to the first prompt C/A code, and late C/A codes delayed relative to the first prompt C/A code. | 11-27-2014 |
20140348213 | RECEIVERS AND METHODS FOR DETECTING FALSE LOCK OF A CARRIER TRACKING LOOP - A method for detecting a false lock of a carrier tracking loop is described. The method includes obtaining an average output of each of one or more loop discriminators in a predetermined time period when the carrier tracking loop works in a first mode; and determining whether the carrier tracking loop is falsely locked when the absolute value of the average output of any of the one or more loop discriminators is greater than a respective threshold associated with the corresponding loop discriminator. The carrier tracking loop comprises the frequency-locked loop and the phase-locked loop in the first mode. The one or more discriminator loops may include a frequency-locked discriminator loop, a phase-locked discriminator loop, or a combination thereof. | 11-27-2014 |
20140347220 | SATELLITE RECEIVER AND METHOD FOR ASSESSING TRACKING LOOP QUALITY OF SATELLITE RECEIVER - A method for assessing tracking loop quality of a satellite receiver is disclosed. The method includes obtaining a carrier-to-noise power density ratio (CN0) of a tracking loop which tracks a satellite signal; generating a statistical value associated with the CN0 based on output values from a discriminator of the tracking loop; and assessing a quality of the tracking loop based on the CN0 and the statistical value. | 11-27-2014 |
20140347219 | RECEIVERS AND METHODS FOR MULTI-MODE NAVIGATION - A receiver for a multi-mode navigation system includes a base band unit and a calculation unit. The base band unit is configured for allocating resources to positioning satellites in each of one or more navigation system, and tracking the positioning satellites with the allocated resources to obtain satellite information of each of the positioning satellites. The satellite information includes one or more of pseudo-ranges, position coordinates, velocity information, and frequency information of the positioning satellites. The calculation unit is configured for receiving the satellite information from the base band unit, evaluating the positioning satellites in each navigation system, and determining a positioning parameter of the receiver. Determination of the positioning parameter includes calculating a position and a velocity of the receiver based on the satellite information according to a least square algorithm. | 11-27-2014 |
20140347218 | APPARATUS AND METHODS FOR DETERMINING STATUS OF A TRACKING LOOP - A receiver associated with a positioning system is provided. The receiver comprises a tracking loop and a signal strength calculating module. The tracking loop is configured for tracking a positioning signal and generating an in-phase signal and a quadrature signal based on the positioning signal. The signal strength calculating module is configured for calculating a first evaluation value and a second evaluation value related to the positioning signal based on the in-phase signal and the quadrature signal, respectively, and determining a status of the tracking loop based on at least one of the first evaluation value and the second evaluation value. | 11-27-2014 |
20140347216 | EPHEMERIS COLLECTION DEVICE AND METHOD - The present disclosure discloses an ephemeris collection device and a method of collecting ephemeris data. The ephemeris collection device may include a data storage unit, configured to store a first part of a first ephemeris subframe if a synchronization of the first ephemeris subframe is not completed; and a subframe merge unit, coupled with the data storage unit and configured to receive a second part of the first ephemeris subframe from the subframe synchronizer and retrieve the first part of the first ephemeris subframe from the data storage unit during a subsequent transmission of the first ephemeris subframe. A complete first ephemeris subframe is obtained based on the first part and the second part of the first ephemeris subframe. | 11-27-2014 |
20140266072 | SYSTEM AND METHODS FOR BATTERY BALANCING - A battery system includes multiple battery cells having multiple cell voltages, and a balancing module. The battery module coupled to multiple battery cells and configured to specify a first voltage threshold according to an amount of a charging current supplied to the battery cells in constant current charging mode, and to initiate a balance check of the battery cells if the first voltage threshold is not satisfied by a cell voltage of the plurality of cell voltages | 09-18-2014 |
20140265908 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A circuit includes a converter and a controller. The converter includes a switch which is turned on and off alternately according to a driving signal to control a current. The controller generates the driving signal which is a periodic signal having a first state in a first time duration and having a second state in a second time duration and in a third time duration per period of the driving signal. The controller modulates the first time duration and the second time duration to have a change rate, and modulates the third time duration equal to a product of the change rate and a sum of the first time duration and the second time duration, such that a quotient of the first time duration squared and the period of the driving signal is independent of a change of the first time duration, and the current is independent of the change. | 09-18-2014 |
20140265907 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A circuit for powering a LED light source includes a converter and a controller. The converter provides an output voltage, and includes a first switch which is turned on and off alternately according to a driving signal to control a current. The controller generates the driving signal which is a periodic signal having a first state and a second state per time period. The first switch is turned on when the driving signal operates in the first state, and is turned off when the driving signal operates in the second state. The controller modulates a time period of the driving signal and a time duration of the first state, such that a quotient of the time duration squared and the time period is substantially independent of a change of the time period, and the current is substantially independent of the change. | 09-18-2014 |
20140218973 | DC/DC CONVERTERS - A controller for a DC/DC converter controls a first, second, third, and fourth switches according to pulse signals generated alternately. The controller turns off the third switch on detection of a first edge of a first pulse signal, turns on the first switch after a delay from the detection of the first edge, turns off the fourth switch on detection of a second edge of the first pulse signal, turns on the second switch after a delay from the detection of the second edge, turns off the first switch on detection of a third edge of a second pulse signal, turns on the third switch after a delay from the detection of the third edge, turns off the second switch on detection of a fourth edge of the second pulse signal, and turns on the fourth switch after a delay from the detection of the fourth edge. | 08-07-2014 |
20140217613 | INTEGRATED DEVICE AND FABRICATION PROCESS THEREOF - An integrated device includes a die attach pad, a main die, a stacked die, and a mold compound. The main die has a first (e.g., bottom) surface attached to the die attach pad and has a second (e.g., top) surface. The stacked die is attached to the second surface of the main die using, for example, an adhesive film. The main die and the stacked die include silicon crystal. The mold compound encapsulates the die attach pad, the main die, and the stacked die. | 08-07-2014 |
20140203962 | Method and System for Navigation - Method and system for navigation are disclosed. One or more signals are received. One or more navigation systems are determined. The one or more signals are directed to navigation and sent from the one or more navigation systems. Navigation information associated with the determined one or more navigation systems is obtained based on the one or more signals. | 07-24-2014 |
20140203782 | BATTERY MANAGEMENT SYSTEM - A battery management system includes detecting circuitry and control circuitry coupled to the detecting circuitry. The detecting circuitry detects cell voltages of battery cells of a battery pack. The control circuitry alternates between a normal state and a charging prohibition state. In the normal state, charging of the battery cells is enabled and the cell voltages increase, and if a voltage of a battery cell of the battery cells exceeds a predetermined overcharge threshold, then the control circuitry transitions to the charging prohibition state. In the charging prohibition state, charging of the battery cells is disabled, and the voltage of the battery cell decreases if at least one cell of the battery cells has a voltage less than a balance threshold. If the voltage of the battery cell falls to a predetermined overcharge-released threshold, then the control circuitry transitions to the normal state and enables charging of the battery cells. | 07-24-2014 |
20140194161 | APPARATUS FOR MANIPULATING A MOBILE TERMINAL DEVICE - An apparatus includes an operation input unit, a detecting unit, a signal generator, and an interface unit. The operation input unit includes one or more actionable areas or buttons configured to be operated by a user. The detecting unit is coupled to the operation input unit and configured to detect an operation performed by the user in one of the actionable areas to provide a detected operation. The signal generator is coupled to the detecting unit and configured to generate a control signal according to the detected operation. The interface unit is coupled to the signal generator and configured to transfer the control signal to a mobile terminal device that is structurally coupled to the apparatus. | 07-10-2014 |
20140184164 | POWER MANAGEMENT SYSTEMS WITH CHARGE PUMPS - A driving circuit for an N-channel Metal Oxide Semiconductor (NMOS) transistor can include a charge pump unit and a driver coupled to the charge pump. The charge pump can receive a source voltage and output an output voltage higher than the source voltage, where the source voltage is applied to a source terminal of the NMOS transistor. The driver receives the output voltage of the charge pump unit and converts the output voltage to a driving voltage operable for conducting the NMOS transistor. | 07-03-2014 |
20140180580 | MODULE, DEVICE AND METHOD FOR POSITIONING - A positioning module is disclosed. Positioning module includes a satellite selection module and a filter. The satellite selection module is configured for selecting one or more positioning satellites among a plurality of satellites of one or more satellite navigation systems and outputting satellite information of the one or more positioning satellites. Filter coupled to the satellite selection module is configured for receiving the satellite information of the one or more positioning satellites, and calculating a position information of positioning module. | 06-26-2014 |
20140156209 | DEVICES WITH BATTERY REMAINING CAPACITY ESTIMATING FUNCTIONS - A device includes an interface and a processor. The interface receives information for a parameter indicative of a status of a battery. The processor calculates a remaining capacity of the battery, calculates a capacity ratio of the calculated remaining capacity to a capacity reference of the battery, compares the parameter with a parameter reference to generate a first comparison result, compares the capacity ratio with a ratio reference to generate a second comparison result, sets an amount according to the first and second comparison results, and changes the calculated remaining capacity by the amount. | 06-05-2014 |
20140125395 | One-Wire Communication Circuit and One-Wire Communication Method - A communication circuit facilitating communication between a first equipment and a second equipment including a conversion circuit, an input port, an output port, and a communication port is disclosed. The conversion circuit converts an input signal to a first intermediate signal, and converts a second intermediate signal to an output signal. The input port inputs the input signal to the first conversion circuit. The output port outputs the output signal to the control unit. The communication port inputs the second intermediate signal to the conversion circuit, and outputs the first intermediate signal to the second equipment. A voltage of the first intermediate signal is determined based on a voltage of a power source if the first intermediate signal is logic high, and a voltage of the second intermediate signal is determined based on the voltage of the power source if the second intermediate signal is logic high. | 05-08-2014 |
20140125139 | METHOD AND APPARATUS FOR WIRELESS POWER TRANSMISSION - Method and apparatus for wireless power transmission. A first target level of a parameter associated with the electric power is sent to the transmitting device. The electric power is then received from the transmitting device. When the parameter of the received electric power reaches the first target level, a second target level of the parameter is sent to the transmitting device. The second target level of the parameter is determined based on a magnitude of a load coupled to the receiving device. | 05-08-2014 |
20140125138 | METHOD AND APPARATUS FOR WIRELESSLY RECEIVING POWER - Method and apparatus for a receiving device to wirelessly receive electric power from a transmitting device. A power capacity is configured at the receiving device, based on a default power capacity known by both the receiving device and the transmitting device. A first value of a dependent parameter is read. The dependent parameter is associated with the electric power and varies in accordance with an independent parameter adjustable by the transmitting device. A second value of the dependent parameter is then read. A maximum power capacity of the transmitting device is identified based on at least the first and second values and a predetermined threshold. The electric power is then received from the transmitting device. | 05-08-2014 |
20140092647 | FLYBACK CONVERTER AND METHOD FOR CONTROLLING A FLYBACK CONVERTER - A flyback converter includes a transformer and a controller operable for controlling a switch coupled in series with a primary winding of the transformer. The controller is configured to operate in multiple modes including a burst mode and a standby mode. In the burst mode, the controller generates a first plurality of discrete pulse groups to turn on the switch and a duration of each pulse in the first plurality of discrete pulse groups is determined by a first reference signal having a first predetermined voltage. In the standby mode, the controller generates a second plurality of discrete pulse groups to turn on the switch and a duration of each pulse in the second plurality of discrete pulse groups is determined by a second reference signal having a second predetermined voltage which is greater than the first predetermined voltage of the first reference signal. | 04-03-2014 |
20140091723 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A driving circuit for driving a light source having an adjustable color temperature is provided. The driving circuit includes a power converter, coupled between a power source and the light source and operable for receiving power from the power source and for providing a regulated power to the light source; and a color temperature controller, coupled to the power converter and operable for receiving a switch monitoring signal indicative of an operation of a power switch coupled between the power source and the power converter, and for adjusting the color temperature of the light source based on the switch monitoring signal. | 04-03-2014 |
20140084871 | SYSTEMS AND METHODS FOR BALANCING BATTERY CELLS - In a power converter, a primary winding receives an input power. In addition, multiple secondary windings transform the input power into multiple charging currents to charge a set of cells via a set of paths. The multiple secondary windings further balance the set of cells based on the charging currents. A ratio between a first turn number of a first secondary winding of the secondary windings and a second turn number of a second secondary winding of the secondary windings is determined by a nominal voltage ratio between two corresponding cells of the set of cells. | 03-27-2014 |
20140070986 | APPARATUSES AND METHODS FOR TRACKING A NAVIGATION RECEIVER - A satellite positioning component calculates a first position associated with a navigation receiver at a first time. An inertial positioning component calculates a second position associated with the navigation receiver at the first time. A combination positioning component provides a reference position, combines the first position and the second position into a third position based on distances among the first position, the second position, and the reference position, and locates the navigation receiver according to the third position. | 03-13-2014 |
20140062780 | Method and Apparatus for Synchronizing Navigation Data - Method, apparatus, and programs for synchronizing navigation data. First synchronization information is obtained from a receiver. The first synchronization information was used for synchronizing first navigation data received by the receiver from a navigation device. A sending time of second navigation data sent from the navigation device is then determined based on the first synchronization information. Second synchronization information is computed based on the sending time of the navigation data. The second synchronization information is used for synchronizing the second navigation data. | 03-06-2014 |
20140062770 | Satellite Signal Receiver and Method for Updating Ephemeris Information Thereby - A satellite signal receiver and a method for updating ephemeris information thereby are disclosed. The receiver includes an instruction module, a signal processing module, and an update module. The instruction module is configured to send an instruction for updating ephemeris information at a set time interval. The signal processing module is configured to obtain corresponding satellite data. The update module is configured to update the ephemeris information according to the obtained satellite data in response to the instruction for updating ephemeris information. | 03-06-2014 |
20140062769 | System and Method for Locating a Satellite Signal Receiver - System and method for locating a satellite signal receiver are disclosed. The system includes a channel opening module, a signal processing module, and a positioning module. The channel opening module is configured for opening a predetermined number of channels based on a priority schedule. The signal processing module is configured for capturing and tracking satellite signals via the opened channels, and demodulating the tracked satellite signals to obtain corresponding satellite data. The positioning module is configured for determining a position of the satellite signal receiver based on the satellite data. | 03-06-2014 |
20140062768 | Method and Apparatus for Synchronizing Navigation Data - Method, apparatus, and programs for synchronizing navigation data. A first distance between a first navigation device and a receiver and a second distance between a second navigation device and the receiver are estimated. The receiver receives first and second navigation data from the first and second navigation devices, respectively. Based on a first sending time of the first navigation data sent from the first navigation device and the first and second distances, a second sending time of the second navigation data sent from the second navigation device is then determined. Synchronization information of the second navigation device is computed based on the second sending time of the second navigation data. The synchronization information is used for synchronizing the second navigation data received at the receiver. | 03-06-2014 |
20140062767 | Method and Apparatus for Synchronizing Navigation Data - Method, apparatus, and programs for synchronizing navigation data. A distance between a navigation device and a receiver is estimated. The receiver receives navigation data from the navigation device. A sending time of the navigation data sent from the navigation device is then determined based on the estimated distance between the navigation device and receiver. Synchronization information is computed based on the sending time of the navigation data. The synchronization information is used for synchronizing the navigation data. | 03-06-2014 |
20140062766 | Method and Apparatus for Synchronizing Navigation Data - Method, apparatus, and programs for synchronizing navigation data. Data synchronization is established between a receiver and a navigation device based on matching of a header of navigation data. The receiver receives the navigation data from the navigation device. If, subsequently, the data synchronization is interrupted, information related to the data synchronization from the receiver is retrieved. The data synchronization is then re-established between the receiver and the navigation device based on the retrieved information. | 03-06-2014 |
20140042995 | METHOD AND SYSTEM FOR CALIBRATING BATTERY PACK VOLTAGE - A negative terminal voltage of a cell is changed from a first to a second negative terminal voltage so that a cell voltage is changed from a first to a second output voltage. A differential-mode calibration parameter is calculated based on a difference between the first and second output voltages and a difference between the first and second negative terminal voltages. The negative terminal voltage of the cell is then changed from the first to second negative terminal voltage so that the positive terminal voltage of the cell is changed from a first to a second positive terminal voltage and the output voltage is changed from a third to a fourth output voltage. A common-mode calibration parameter is calculated based on the differential-mode calibration parameter and a difference between the third and fourth output voltages and a difference between the first and second positive terminal voltages. | 02-13-2014 |
20140005855 | DEVICE AND METHOD FOR CALCULATING A REMAINING MILEAGE OF AN ELECTRIC VEHICLE | 01-02-2014 |
20140001837 | Dual Core DC/DC Module for Electrical Vehicle | 01-02-2014 |
20130330084 | Systems and Methods for Remotely Controlling Electronic Devices - Methods and systems for remotely controlling a device are provided. A first input is received from a user at a portable device. The first input specifies a first time and a first mode associated with the device. At the first time, a first command is remotely sent from the portable device to the device to activate the device in the first mode. | 12-12-2013 |
20130328498 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A controller for controlling power to a light source includes a first sensing pin, a second sensing pin, and a driving pin. The first sensing pin receives a first signal indicating an instant current through an energy storage element. The second sensing pin receives a second signal indicating whether the instant current decreases to a predetermined level. The driving pin provides a driving signal to a switch to control a current through the light source to a target level. The driving signal is generated based on one or more signals selected from the first signal and the second signal. The controller further includes an error amplifier for generating an error signal based on the first signal and a reference signal indicating the target level. The output of the error amplifier is coupled to a capacitor. | 12-12-2013 |
20130307550 | STATE OF CHARGE INDICATORS FOR BATTERY PACKS - A state-of-charge (SOC) indicator for a battery pack is provided. The operation of the indicator is changed from a first mode to a second mode if a mechanism is activated, and is changed to a third mode if the mechanism remains activated after a timer expires. The indicator consumes a first amount of power in the second mode, and consumes a second amount of power which is less than the first amount in the third mode. The indicator blinks with a regular frequency when the SOC is less than a threshold. A comparator compares a divided signal and a reference signal during a first time interval, and the indicator displays the SOC based upon the comparison result during a second time interval separated from the first time interval. | 11-21-2013 |
20130290569 | Apparatus and Method for Interconnecting a Portable Electronic Device and a Media System in a Vehicle - An apparatus includes a communication module and a processor. The communication module receives an identifier of a portable electronic device when the portable electronic device is coupled to the apparatus. The processor is coupled to the communication module. The processor determines a type of the portable electronic device according to the identifier, receives a first command from the media system, converts the first command into a retrieval command readable by the portable electronic device, and sends the retrieval command to the portable electronic device. The first command includes a first play command instructing the media system to play a first media file stored in the portable electronic device. The portable electronic device sends the first media file to the apparatus in response to the retrieval command. | 10-31-2013 |
20130278837 | Multi-Media Systems, Controllers and Methods for Controlling Display Devices - A multi-media system includes a display device and a controller. The display device receives a video signal indicating image content and displays the image content according to the video signal. The controller captures a user's information, identifies a user's sensory state according to captured user information, and generates a control signal according to the sensory state for controlling the display device. The user information includes image information. The sensory state includes eyeball movement. | 10-24-2013 |
20130278219 | Battery Testing System and Control Method for Battery Testing System - Embodiments of the invention provide a battery testing system. The battery testing system includes a charger, a discharging unit, and a switch board. The switch board receives a first control signal from the control unit and controls the charger according to the first control signal, receives a first monitoring signal from the charger indicating a charging status of the battery and controls the control unit according to the first monitoring signal, receives a second control signal from the control unit and controls the discharging unit according to the control signal, and receives a second monitoring signal from the discharging unit indicating a discharging status of the battery and controls the control unit according to the second monitoring signal. The control unit is electrically isolated from the discharging unit and the charger by the switch board. Different charging/discharging equipments can be employed to test the battery. | 10-24-2013 |
20130265194 | Navigation Bit Boundary Determination Apparatus and a Method Therefor - A navigation bit boundary determination apparatus and a method therefor. The navigation bit boundary determination apparatus includes a Beidou satellite signal receiving module, a position receiving and clock calibration module, a calculation module, and a determination module. The Beidou satellite signal receiving module receives a Beidou Geostationary Earth Orbit (GEO) satellite signal, determines and records a local receiving time of the Beidou GEO satellite signal. The position receiving and clock calibration module receives a GPS time signal and a position of the navigation bit boundary determination apparatus. The calculation module calculates a transmitting time for the Beidou GEO satellite signal. The determination module determines a navigation bit boundary of the Beidou GEO satellite signal. | 10-10-2013 |
20130257754 | DISPLAY SYSTEMS WITH TOUCH SCREENS - A display system includes a touch screen and a driving circuit. The touch screen includes touch sensors and a light source. A converter of the driving circuit receives an input voltage and provides a first output voltage to the light source according to a driving signal. A controller of the driving circuit converts the first output voltage to a second output voltage to drive the touch sensors, compares a voltage feedback signal indicating whether the second output voltage reaches a desired voltage level with a current feedback signal indicating whether a current through the light source reaches a desired current level, selects a feedback signal from the voltage feedback signal and the current feedback signal according to the comparison, and generates the driving signal to adjust the first output voltage according to the selected feedback signal. | 10-03-2013 |
20130257651 | NAVIGATION BIT BOUNDARY DETERMINATION APPARATUS AND A METHOD THEREFOR - A navigation bit boundary determination apparatus and a method therefor. In one example, the navigation bit boundary determination apparatus includes a satellite signal receiving module, a position receiving and clock calibration module, a detection module, a first calculation module, a second calculation module, and a determination module. The satellite signal receiving module is configured to receive a satellite signal from a satellite and record a local receiving time of the satellite signal. The position receiving and clock calibration module is configured to receive a time signal and a position of the navigation bit boundary determination apparatus. The detection module is configured to detect if ephemeris information of the satellite is available. The first calculation module is configured to calculate a coordinate of the satellite. The second calculation module is configured to calculate a transmitting time for the satellite signal. The determination module is configured to determine a navigation bit boundary of the satellite signal. | 10-03-2013 |
20130250108 | Access Control System by Face Recognition in An Automobile - An access control system in an automobile is provided. The access control system includes a grayscale camera, an infrared camera and a processing device. The grayscale camera is configured to capture a grayscale image of the face of a driver. The infrared camera is configured to capture an infrared image of the face of the driver simultaneously with the grayscale camera. The processing device includes a processor and a controller. The processor is configured to receive the grayscale image and the infrared image, convert the grayscale image and the infrared image to a grayscale matrix and an infrared matrix respectively, extract a feature matrix from the grayscale matrix and the infrared matrix, and compute a similarity value by comparing the feature matrix with multiple feature matrices. The controller is configured to receive a result of face recognition and control a startup device and a warning device of the automobile. | 09-26-2013 |
20130246227 | Device and Method for Enhancing Buying Experience - A method for enhancing buying experience. The method for enhancing buying experience includes acquiring information regarding clothes and a body size of a user; generating a model of the clothes based on the information regarding clothes and the body size of the user; acquiring a current posture of the user; modifying the model of the clothes according to the current posture of the user to generate a modified model of the clothes; and combining a real-time photo of the user with the modified model of the clothes to compose a real-time image. | 09-19-2013 |
20130243388 | System and Method for Controlling Video Player - A control system for a video player. The control system includes an image acquisition module, a first storage module, a comparison module and a control module. The image acquisition module is configured to scan a predetermined area in front of the video player to detect a first set of facial images when the video player is playing a tagged program. The first storage module is configured to store a second set of facial images of registered users. The comparison module is configured to compare a detected facial image in the first set of facial images with the second set of facial images. The control module is configured to control the video player based on a comparison result from the comparison module. | 09-19-2013 |
20130229582 | SYSTEM AND METHOD FOR CONTROLLING A DEVICE - A control system of a device is disclosed. The control system comprises an acquisition module, an identification module, a determining module and a control module. The acquisition module is configured for detecting whether there are one or more users present in a predetermined area before a device, and obtaining characteristic information of the one or more detected users. The identification module is configured for detecting the identity of each of the one or more users by comparing the characteristic information of the one or more users with stored characteristic information. The determining module is configured for determining priority and/or authority of each of the one or more users based on the identity of each of the one or more users, and determining an operator based on the authority and/or priority. The control module is configured for controlling the device based on at least one instruction of the operator. | 09-05-2013 |
20130227343 | Circuits and Methods for Replacing Defective Instructions - An address selector replaces an address pointing to a defective instruction in a built-in firmware. The address selector includes a comparing unit and a multiplexer. The comparing unit provides a comparison result by comparing a current address received from a processor with a predetermined address pointing to the defective instruction. The multiplexer coupled to the comparing unit receives a backup address pointing to a backup instruction, and the current address and if the current address matches the predetermined address, selects the backup address such that the current address is replaced by the backup address | 08-29-2013 |
20130200856 | Device and Method for Battery Abnormality Processing - Embodiments in accordance with the present invention provide a battery abnormality processing device for processing abnormalities in a battery pack with multiple battery modules. The battery abnormality processing device includes a detecting unit coupled to the battery modules, a comparison unit coupled to the detecting unit and a processing unit coupled to the comparison unit. The detecting unit detects the temperature at each end of each battery module in the battery pack. The comparison unit determines the abnormalities in the battery pack based on the detected temperatures. The processing unit executes an abnormality handling process if an abnormality is determined. | 08-08-2013 |
20130200850 | Circuit and Method for Cell Balancing - A balancing circuit for balancing multiple cells in a battery. The cell balancing circuit includes a first shunt path connected in parallel to a first cell, a controller coupled to the first shunt path, a timer and a storage unit. The controller balances the cells and detects balance conditions of each cell. The timer measures pre-balance times and balance times for each cell. The storage unit stores the pre-balance times and balance times. The controller pre-balances the first cell by enabling the first shunt path for a first pre-balance time and balances the first cell by enabling the first shunt path for a first balance time if an unbalance condition of the first cell is detected by the controller, and updates the first pre-balance time for each balancing cycle based on the first pre-balance time and the first balance time from a previous balancing cycle. | 08-08-2013 |
20130179973 | DETECTING STATUS OF AN APPLICATION PROGRAM RUNNING IN A DEVICE - A detecting system includes a sense terminal and detecting circuitry coupled to the sense terminal. The sense terminal receives an indicative signal indicative of a supply current of a power source. The detecting circuitry calculates variation in the supply current based on the indicative signal, estimates power consumption of an application program residing on a computer-readable medium according to the variation, and detects whether an abnormal condition occurs by comparing the estimated power consumption with a reference. | 07-11-2013 |
20130166817 | DATA TRANSFER SYSTEMS WITH POWER MANAGEMENT - A controller for transferring data between a host and a storage medium includes a data transfer unit and a control unit. The data transfer unit transfers data according to control commands from the host if the data transfer unit is enabled. The control unit coupled to the data transfer unit receives a status signal indicating whether the storage medium is coupled to a socket of the controller. The control unit provides interruption signals to the host. Power and a clock signal for the control unit are disabled if the status signal indicates that the storage medium is decoupled from the controller. | 06-27-2013 |
20130154592 | CIRCUIT AND METHOD FOR PROVIDING A REFERENCE SIGNAL - An integrated circuit for providing a reference signal to a regulator includes a comparison circuit and a first reference signal adjustor. The comparison circuit is configured to output a control signal based on a difference between levels of a constraint signal of the regulator, such as an input voltage signal or a supply voltage signal, and the reference signal. The regulator has a feedback control loop maintained by the reference signal. The first reference signal adjustor is operatively coupled to the comparison circuit and is configured to adjust the level of the reference signal based on the control signal such that the level of the reference signal increases toward a preset level and does not cause the feedback control loop of the regulator to become saturated when the regulator is in a start-up phase. | 06-20-2013 |
20130147277 | POWER MANAGEMENT SYSTEM - A power management system adjusts a first output voltage delivered to a load and adjusts a second output voltage delivered to a battery. The power management system includes an error amplifier for comparing the first output voltage with a first voltage reference indicative of an operating voltage of the load and for accordingly generating a first error signal. The power management system further includes a DC/DC converter for adjusting the first output voltage and the second output voltage by adjusting a duty cycle of the DC/DC converter and an error generator for controlling the duty cycle based on the first error signal. If the first output voltage is lower than the first voltage reference, the error generator reduces the duty cycle and a charging current of the battery based on the first error signal. | 06-13-2013 |
20130132740 | Power Control for Memory Devices - A power controller is configured to deliver different power levels to different types of memory devices. The power controller includes a selecting unit to select a control mode that controls power delivered to a memory device. The selecting unit includes a first input configured to receive a mode signal, multiple control inputs configured to receive several control mode signals, and multiple outputs configured to output power to the memory device. The selecting unit selects the control mode according to the received mode signal and outputs power according to the control modes signals. | 05-23-2013 |
20130132635 | DIGITAL SIGNAL TRANSCEIVER SYSTEMS - A system includes a first digital signal transceiver having a first interface, a second digital signal transceiver having a second interface, and a communication bus coupled between the first interface and the second interface. The communication bus is operable for establishing communication between the first digital signal transceiver and the second digital signal transceiver, and the communication is serial and asynchronous. | 05-23-2013 |
20130111283 | Systems and Methods for Testing Memories | 05-02-2013 |
20130106489 | SIGNAL INPUT CIRCUIT/CHIP | 05-02-2013 |
20130100757 | Dual-Port Memory and a Method Thereof - A dual-port memory is provided. The dual-port memory includes a first single-port memory and a second single-port memory. The first single-port memory is configured to store data in an even address of the dual-port memory. The second single-port memory is configured to store data in an odd address of the dual-port memory. The dual-port memory simultaneously performs a read operation to read data from the odd address and a write operation to write data into the even address. The dual-port memory simultaneously performs a read operation to read data from the even address and a write operation to write data into the odd address. | 04-25-2013 |
20130099726 | System and Method for Charging of Battery - A battery charging system for charging a battery with a plurality of battery cells. The battery charging system includes a battery charger and a battery management unit. The battery management unit includes a plurality of balancing circuits for controlling charging of each battery cell. The battery charging system can charge the battery in different stages depending on the voltage of each battery cell. | 04-25-2013 |
20130099723 | SYSTEMS AND METHODS FOR CELL BALANCING - A method for balancing multiple battery cells which are grouped into multiple battery modules includes: obtaining cell parameters of the battery cells, respectively; calculating an average cell parameter for each of the battery modules according to the cell parameters; identifying a donator module and a receiver module from the battery modules based upon the average cell parameter; and transferring energy from the donator module to the receiver module to balance the battery cells. | 04-25-2013 |
20130099577 | POWER MANAGEMENT SYSTEMS - A power management system includes a first switch, a second switch, and a controller coupled to the first and second switches. The first switch has a first transfer terminal. The second switch has a second transfer terminal. The controller controls power conversion by turning on a third switch periodically. The first and second transfer terminals and a third transfer terminal of the third switch are coupled to a common node. The resistance between the first transfer terminal and the common node, the resistance between the second transfer terminal and the common node, and the resistance between the third transfer terminal and the common node are substantially equal to zero. | 04-25-2013 |
20130093238 | POWER MANAGEMENT FOR ELECTRIC VEHICLES - An apparatus for managing power in an electric vehicle includes a control circuit and a first switch. The control circuit is configured to generate a first control signal based on a current of a battery operable for powering the electric vehicle, and to generate a second control signal based on a voltage of the battery. The first switch is configured to control connection of the battery to a power source and a load in the electric vehicle according to the first control signal. The first control signal controls a voltage at a terminal of the first switch to maintain the current of the battery to be substantially equal to a current setting, and the second control signal controls the battery to switch between a first state and a second state. | 04-18-2013 |
20130085666 | Method, Apparatus and System with Error Correction for an Inertial Navigation System - A method for correcting errors for an Inertial Navigation System. The method includes the steps of determining a working state of the Inertial Navigation System based on a current positioning parameter of the moving object, a navigation map-based reference positioning parameter and a GPS-based reference positioning parameter, and replacing an initial parameter of the Inertial Navigation System with the GPS-based reference positioning parameter and resetting the Inertial Navigation System to an initial state if the Inertial Navigation System is determined to be in an abnormal working state. | 04-04-2013 |
20130082873 | Moving Information Determination Apparatus, a Receiver, and a Method Thereby - A moving information determination apparatus includes an ECA (Earth Center Assistant) information acquisition module, an altitude information and position information storage module and a moving information calculation module. The altitude information and position information storage module provides initial position information of the moving information determination apparatus and altitude information of the moving information determination apparatus. The ECA acquisition module obtains a radius of the Earth at the current position of the moving information determination apparatus. The moving information calculation module calculates the current position and/or velocity of the moving information determination apparatus based on the radius of the Earth and a plurality of signals from a plurality of satellites. | 04-04-2013 |
20130069704 | ONE-WIRE COMMUNICATION CIRCUIT AND ONE-WIRE COMMUNICATION METHOD - A communication circuit facilitating communication between a first equipment and a second equipment including a conversion circuit, an input port, an output port, and a communication port is disclosed. The conversion circuit converts an input signal to a first intermediate signal, and converts a second intermediate signal to an output signal. The input port inputs the input signal to the first conversion circuit. The output port outputs the output signal to the control unit. The communication port inputs the second intermediate signal to the conversion circuit, and outputs the first intermediate signal to the second equipment. A voltage of the first intermediate signal is determined based on a voltage of a power source if the first intermediate signal is logic high, and a voltage of the second intermediate signal is determined based on the voltage of the power source if the second intermediate signal is logic high. | 03-21-2013 |
20130069546 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A controller controls power to a light source. The light source receives a rectified AC voltage and includes a first plurality of LEDs and a second plurality of LEDs. The controller regulates a current flowing through the first plurality of LEDs to a first predetermined level when the rectified AC voltage is within a first predetermined range. The second plurality of LEDs remain off when the rectified AC voltage is within the first predetermined range. | 03-21-2013 |
20130055553 | SYSTEMS AND METHODS FOR GROUPING BATTERIES - Methods and systems for grouping multiple battery modules in a battery pack are disclosed. Multiple characteristic parameters of multiple cells in a battery module of the battery modules are measured to produce a measured result. Multiple differences between the multiple characteristic parameters are calculated according to the measured result. The battery module is classified according to the multiple differences. | 03-07-2013 |
20130049678 | BATTERY TEMPERATURE DETECTION AND PARASITIC RESISTANCE COMPENSATION SYSTEM - The present application provides systems and methods for battery temperature detection and parasitic resistance compensation. Compensation circuitry is provided to generate a compensation current, proportional to a battery charging or discharging current, to compensate for the parasitic resistance associated with the line connection between a charger/monitor and a battery pack. The compensation current operates to adjust a reference current supplied to a temperature sensor, to enable accurate temperature measurement of the battery pack while reducing or eliminating influence from the parasitic resistance. The compensation circuitry can be utilized in a battery charger topology to enhance battery charging control and/or a battery monitoring topology to enhance battery discharge control. | 02-28-2013 |
20130038227 | CIRCUITS AND METHODS FOR DRIVING LED LIGHT SOURCES - A driving circuit for controlling power of a light-emitting diode (LED) light source includes a transformer, a switch controller, and a dimming controller. The transformer has a primary winding that receives input power from an AC/DC converter and a secondary winding that provides output power to the LED light source. The switch controller coupled between an optical coupler and the primary winding receives a feedback signal indicative of a target level of a current flowing through the LED light source from the optical coupler, and controls input power to the primary winding according to the feedback signal. The dimming controller coupled to the secondary winding receives a switch monitoring signal indicative of an operation of a power switch coupled between an AC power source and the AC/DC converter, and regulates the output power by adjusting the feedback signal according to the switch monitoring signal. | 02-14-2013 |
20130024712 | Device and Method for Operating Memory Cards - Embodiments in accordance with the present invention provide devices and methods for operating two memory cards. In one embodiment, an electronic device includes a host controller, a first socket in communication with the host controller, for receiving a first memory card and a second socket, and a second socket in communication with the host controller, for receiving a second memory card. The physical pin arrangement of the second socket is in an order reversed from the physical pin arrangement of the first socket. The host controller transmits power to the first memory card and cuts off power to the second memory card during a first time period, and cuts off power to the first memory card and transmits power to the second memory card during a second time period. The first socket and the second socket transmit and receive same set of data signals. | 01-24-2013 |
20130024585 | Circuits and Methods for Providing Communication Between a Memory Card and a Host Device - An interface circuit provides communication between a memory card and a host device. The interface circuit includes first and second sets of pins and a control unit. The control unit enables the first set of pins and disables the second set of pins when transferring a first set of signals in a first mode via the first set of pins, and disables the first set of pins and enables the second set of pins when transferring a second set of signals in a second mode via the second set of pins. The control unit transfers a clock signal of the second set of signals by differential signaling in the second mode via a clock pin of the second set of pins. A signal transfer in the second mode is at a greater speed than a signal transfer in the first mode. | 01-24-2013 |
20130020970 | Control System and Control Method for Electric Bicycle - A system and methods for controlling an electric motor in an electric vehicle. The system includes a battery management system and a motor controller. The battery management system monitors output voltage of each individual cell unit in a battery pack with a plurality of cell units and generates a state signal and a count value according to the monitored output voltages. The motor controller receives the state signal and the count value from the battery management system and controls the output current to the electrical motor. The battery management system generates the state signal in a first state if none of the monitored output voltages is below a predefined voltage for longer than a predefined period. The battery management system increases the count value each time a monitored output voltage drops below the predefined voltage. The cell units in the battery pack are protected by the battery management system. | 01-24-2013 |
20130015810 | Battery Charging Apparatus with a Common Control Loop for a Low Drop-Out Voltage Regulator and a Boost RegulatorAANM Guo; GuoyongAACI Santa ClaraAAST CAAACO USAAGP Guo; Guoyong Santa Clara CA USAANM Nie; DanAACI ChengduAACO CNAAGP Nie; Dan Chengdu CN - A flexible dual mode battery charger that charges a battery in two different modes, depending on the difference between the adapter voltage and the battery voltage, with a smooth transition between these two modes and the charging current remains relatively constant during the transition is provided in this application. At a lower battery level, the dual mode battery charger charges the battery as a LDO charger and when battery voltage is very close to the adapter voltage, the charger migrates its operating mode from the LDO mode to the boost mode and charges the battery as a boost charger. This flexible battery charger uses one common control circuit for controlling the operations of the LDO charger and the boost charger. The switching operation from one operation mode to other operation mode is smooth. | 01-17-2013 |
20120303997 | Flexible Bus Architecture for Monitoring and Control of Battery Pack - A method for diagnosing a control system for a stacked battery. The control system comprises a plurality of processors, a plurality of controllers, and a monitoring unit (control unit). The method comprises sending a diagnostic information from the central unit to a top processor of the plurality of processors, transmitting a return information from the top processor of the plurality of processors to the central unit, comparing the diagnostic information sent from the central unit with the return information received by the central unit, and indicating a communication problem if the diagnostic information sent from the central unit is different from the return information received by the central unit. The steps are repeated by eliminating the top processor from a previous cycle and assigning a new top processor if there is no problem with the reconfigurable communication system. | 11-29-2012 |
20120280572 | BATTERY SYSTEMS AND CONTROLLERS - A battery system includes battery cells and a control circuit having a control pin. The control circuit determines a condition of the battery cells according to cell parameters of the battery cells. The control circuit compares a voltage at the control pin with a first voltage threshold to select an operation mode from a first mode and a second mode. In the first mode, the control circuit compares the voltage at the control pin with a second voltage threshold and generates a control signal based on a result of the comparison, such that the control signal is generated if the battery cells remain in the condition for a time period that reaches a first time threshold. In the second mode, the control circuit generates the control signal if the battery cells remain in the condition for a time period that reaches a second time threshold. | 11-08-2012 |
20120268023 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A driving circuit for driving a light-emitting diode (LED) light source includes a buck-boost converter and a controller. The buck-boost converter receives an input voltage and an input current and powers the LED light source, and comprises a switch controlled by a driving signal. The controller receives a first signal indicating a current through the LED light source, and generates the driving signal based on the first signal to control the switch and to adjust the current through the LED light source. The buck-boost converter further comprises a current sensor which provides a second signal indicating an instant current flowing through the buck-boost converter, wherein the first signal is derived from the second signal, and wherein a reference ground of the controller is different from a ground of the driving circuit. | 10-25-2012 |
20120249098 | CIRCUITS AND METHODS FOR CURRENT SENSING - A circuit includes a first resistor, a second resistor, a voltage follower and a current mirror. The first resistor converts a current flowing through the first resistor to a voltage drop between positive and negative sides of the first resistor. The second resistor is coupled to the negative side of the first resistor. The voltage follower is coupled to the positive side of the first resistor via a non-inverting terminal, and coupled to the negative side of the first resistor through the second resistor via an inverting terminal to cause a voltage at the inverting terminal to follow a voltage at the non-inverting terminal. The current mirror is coupled to the voltage follower to provide a sensing current proportional to the current flowing through the first resistor. | 10-04-2012 |
20120243269 | Circuits and Methods for Controlling Power Converters Including Transformers - A circuit includes a transformer and a controller. The transformer includes a primary winding and a secondary winding, and operates in multiple switching cycles. A switching cycle includes a charging period and a discharging period. During the charging period, the transformer is powered by the input voltage and a current flowing through the primary winding increases. During the discharging period the transformer discharges to power the load and a current flowing through the secondary winding decreases. The controller includes a pin that receives a first feedback signal indicating the input voltage during the charging period and receives a second feedback signal indicating an electrical condition of the secondary winding during the discharging period. The controller generates a first control signal and a second control signal to regulate the input voltage and an output current flowing through the load, respectively. | 09-27-2012 |
20120228699 | METHODS FOR FABRICATING TRANSISTORS INCLUDING ONE OR MORE CIRCULAR TRENCHES - A transistor and a method of fabricating a transistor, including a metal oxide deposited on an epitaxial layer, a photo resist deposited and patterned over the metal oxide and the metal oxide and epitaxial layer are etched to form at least one circular trench, wherein the trench surfaces are defined by the epitaxial layer. An oxide layer is grown on the trench surfaces of each trench, and a gate conductor is formed within the at least one trench. | 09-13-2012 |
20120225621 | ELECTRONIC DEVICE WITH THE FUNCTION OF SUPPORTING MULTIPLE CARDS - An electronic system includes multiple I/O interfaces and a controller. The controller is coupled to multiple cards via multiple I/O interfaces respectively, and can select a card from multiple cards and perform a wireless communication to transfer data between the selected card and a target electronic device. The controller includes a configuration block and a core. The configuration block stores configuration data indicative of selecting which card. The core is coupled to the configuration block and the cards and can enable the wireless communication. | 09-06-2012 |
20120217878 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range. | 08-30-2012 |
20120212188 | SYSTEM AND METHOD FOR BATTERY CHARGING - A charging circuit includes an N-channel metal-oxide-semiconductor field-effect transistor (NMOSFET) that controls a charging current to a battery, a charge pump that generates a driving signal based on a plurality of pulses, and a resistor coupled to a gate of the NMOSFE. The resistor and a capacitance of the gate of the NMOSFET form a low pass filter. The driving signal is filtered by the low pass filter to control a gate voltage of the NMOSFET. A variation of a gate-source voltage of the NMOSFET is proportional to a pulse density of the plurality of pulses. A variation of the charging current flowing through the NMOSFET to the battery is proportional to the pulse density. | 08-23-2012 |
20120206120 | POWER REGULATOR - A power regulator for converting an input voltage to an output voltage includes an error amplifier, a start-up circuit, and a pass device. The error amplifier is powered by the output voltage and provides a control current according to a difference between a reference signal and a feedback signal indicative of the output voltage. The start-up circuit is powered by the input voltage and provides a start-up current. The pass device receives the input voltage, provides the output voltage at an output terminal of the power regulator, generates an output current flowing through the output terminal according to the start-up current during a start-up duration of the power regulator, and generates the output current through the output terminal according to the control current during a normal operation of the power regulator. | 08-16-2012 |
20120196159 | Battery Management System with Energy Balance Among Multiple Battery Cells - A battery circuit including a first battery cell with a first parameter having a first value and a second battery cell with a second parameter having a second value. The second battery cell is coupled to the first battery cell in series. The battery circuit further includes a magnetic device operable for storing energy transferred from the first battery cell via a first winding coupled to the first battery cell and for releasing the stored energy to the second battery cell via a second winding coupled to the second battery cell if the first value of the first parameter is greater than the second value of the second parameter. | 08-02-2012 |
20120176066 | PORTABLE LIGHTING DEVICE AND METHOD THEREOF - A portable lighting device includes a controller, a power source that provides a voltage, and a load that includes a light emitting diode (LED) light source. The controller receives the voltage and regulates a current of the LED light source based on a sensing signal indicating the voltage of the power source. The controller regulates the current of the LED light source to a first current level if the voltage of the power source is greater than a first voltage level, and to a second current level if the voltage of the power source is less than a second voltage level. The second voltage level is less than the first voltage level. The controller regulates the current of the LED light source to vary according to the sensing signal if the voltage of the power source is between the first voltage level and the second voltage level. | 07-12-2012 |
20120169243 | CIRCUITS AND METHODS FOR CONTROLLING DIMMING OF A LIGHT SOURCE - A controller that monitors a rectified voltage and detects whether the rectified voltage comes from a TRIAC dimmer or an on/off switch dimmer is disclosed. The controller controls dimming of a light source according to the rectified voltage if the rectified voltage comes from the TRIAC dimmer. The controller controls dimming of the light source according to an operation of the on/off switch dimmer if the rectified voltage comes from the on/off switch dimmer. | 07-05-2012 |
20120153866 | DC/DC CONVERTER WITH MULTIPLE OUTPUTS - Embodiments of the invention provide a DC/DC converter. The DC/DC converter includes a transformer, a switch controller and a driver controller. The transformer has a primary winding coupled to a power source, a first secondary winding provides a first output voltage to a first load, and a second secondary winding provides a second output voltage to a second load. The switch controller is coupled to the primary winding and controls a first switch coupled to the primary winding to control input power to the primary winding and to regulate the first output voltage based on a power requirement of the first load. The driver controller is coupled to the second secondary winding and generates a pulse modulation signal to alternately turn on and turn off a second switch coupled to the second secondary winding to regulate the second output voltage based on a power requirement of the second load. | 06-21-2012 |
20120139482 | BATTERY CHARGING MANAGEMENT - A battery charging management apparatus includes an information obtaining unit and a controlling unit coupled to the information obtaining unit. The information obtaining unit obtains parameter information for temperature of a battery during a charging process performed by a charger for the battery. The controlling unit controls the charger to charge the battery based on the parameter information of the battery, so that operation of the charger conforms to a charging rule corresponding to the charging process. The controlling unit decreases a charging signal of the charger by a predetermined decrement if the temperature of the battery increases by a predefined increment. | 06-07-2012 |
20120139433 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A circuit for driving a light-emitting diode (LED) light source includes a converter, a saw-tooth signal generator, and a controller. The converter includes a switch which is controlled by a driving signal. The converter provides a sense signal indicating the current through said LED light source. The saw-tooth signal generator generates a saw-tooth signal based on the driving signal. The controller generates the driving signal based on signals including the saw-tooth signal and the first sense signal to adjust the current through the LED light source to a target level and to correct a power factor of the driving circuit by controlling an average current of the input current to be substantially in phase with said input voltage. | 06-07-2012 |
20120139422 | DRIVING CIRCUIT FOR POWERING LED LIGHT SOURCES - Embodiments of the invention provided a driving circuit for powering a light-emitting diode (LED) light source. The driving circuit includes a rectifier, a s filter capacitor, and a control circuit. The rectifier converts an AC voltage from an AC power source to a rectified AC voltage. The filter capacitor coupled to the rectifier filters the rectified AC voltage to provide a DC voltage. The control circuit controls power supplied to the LED light source. The control circuit enables a discharging current periodically to discharge the filter capacitor if a switch coupled between an AC power source and a rectifier is turned off and disables the discharging current if the control circuit determines that the switch is turned on. | 06-07-2012 |
20120112650 | DRIVING CIRCUIT WITH DIMMING CONTROLLER FOR DRIVING LIGHT SOURCES - A controller for controlling dimming of a light-emitting diode (LED) light source includes a switch monitoring pin, a current monitoring pin, and a control pin. The switch monitoring pin monitors an operation of a power switch which transfers an AC voltage to a rectifier when the power switch is on. The current monitoring pin receives a current monitoring signal indicating a current flowing through the LED light source. The control pin generates a control signal to control a second switch coupled in series with the LED light source to adjust the brightness of the LED light source according to the operation of the power switch. | 05-10-2012 |
20120106795 | SYSTEM AND METHOD FOR OPTIMIZING CAMERA SETTINGS - There is provided a recognition system. The recognition system is coupled to an image capturing device, and determines a first matching percentage by comparing a first live image with a first reference image, determines a second matching percentage by comparing a second live image with the first reference image, compares the first matching percentage with the second matching percentage to determine a direction of adjustment of a setting of the image capturing device, and generates a feedback signal to adjust the setting based on the direction of adjustment. The first live image and second live image are captured by the image capturing device. | 05-03-2012 |
20120106663 | METHOD FOR TRANSMITTING DATA - Embodiments in accordance with the present invention provide a method for transmitting a data frame between a battery management system (BMS) and an associated device. The battery management system is coupled to an associated device via a one-wire bi-directional communication line. The method includes obtaining a control right of the one-wire bi-directional communication line and determining a target device based on a frame header by sending the frame header of a data frame by a source device; sending a specific data byte of the data frame from the source device to the target device; checking whether an acknowledge character from the target device is received by the source device within a predetermined time period; and releasing the control right of the one-wire bi-directional communication line if the acknowledge character is received within the predetermined time period by the source device or otherwise resending the data frame. | 05-03-2012 |
20120105008 | POWER TOPOLOGY WITH BATTERY CHARGING AND DISCHARGE CURRENT PROTECTION CAPABILITIES - Generally, a system includes a control circuitry configured to detect a current wherein the detected current is one of a battery discharge current or a battery charging current; a first transistor configured to disconnect a load from at least one of a battery and a DC/DC converter if the battery discharge current exceeds a maximum battery discharge current setting; and a second transistor configured to adjust the charging current to maintain the charging current at or near a charge current setting. | 05-03-2012 |
20120104468 | FABRICATING HIGH VOLTAGE TRANSISTORS IN A LOW VOLTAGE PROCESS - Fabricating high voltage transistors includes forming a buried p-type implant on a p-substrate for each transistor, the transistor having a source side and a drain side, wherein the p-type implant is positioned adjacent the source and is configured to extend under a gate region; depositing a low doping epitaxial layer on the p-substrate and the p-type implant for each high voltage transistor, the low doping epitaxial layer extending from the source to the drain; forming an N-Well in the low doping epitaxial layer for each transistor, wherein the N-Well corresponds to a low voltage transistor N-Well fabricated using a low voltage transistor fabrication process; and forming a p-top diffusion region in or on the N-Well for each transistor, wherein the p-top diffusion region is configured to compensate for a dopant concentration of the N-Well at or near a surface of the N-Well opposing the substrate. | 05-03-2012 |
20120091816 | POWER SYSTEMS WITH MULTIPLE POWER SOURCES - In one embodiment, a power system includes a first power source having a first voltage, a second power source having a second voltage, and a controller. The controller is coupled to the first power source and the second power source. The controller compares the first voltage with the second voltage, controls the first power source to charge the second power source via a first switch and a second switch in a charging mode when the first voltage is greater than said second voltage, and controls the second power source to power a load such as a light-emitting diode (LED) light source via the second switch and a third switch in a load-powering mode when the second voltage is greater than the first voltage. | 04-19-2012 |
20120038483 | SYSTEMS AND METHODS FOR BATTERY STATUS INDICATION - A method and apparatus are provided to indicate battery capacity status. Different blinking frequencies of an LED correspond to different battery states of charge. Furthermore, the present invention provides a smooth visual brightness change of the LED by providing the appropriate LED current according to human eye characteristics. | 02-16-2012 |
20120038292 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A driving circuit for driving a light source includes a converter and a dimming controller. The converter coupled to a power source is operable for receiving power from the power source and for providing regulated power to the light source according to control signals. The dimming controller coupled to the converter is operable for monitoring a power switch coupled between the power source and the converter, for receiving a color change signal indicating a first set of operations of the power switch and a dimming request signal indicating a second set of operations of the power switch, for controlling the control signals to change the color of the light source in response to the color change signal, and for controlling the control signals to adjust the brightness of the light source in response to the dimming request signal. | 02-16-2012 |
20120032613 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A driving circuit for powering a light-emitting diode (LED) light source includes a converter circuit, an energy storage element and a switch element. The converter circuit provides a first output voltage on a first power line to provide power to the LED light source and provides a second output voltage on a second power line that is less than the first output voltage. The energy storage element is charged and discharged to regulate a current through the LED light source. The switch element operates in a first state during which the energy storage element is charged and operates in a second state during which the energy storage element is discharged. The converter circuit provides the second output voltage to maintain an operating voltage across the switch element less than the first output voltage during both the first state and the second state. | 02-09-2012 |
20120025792 | CONTROLLERS FOR POWER CONVERTERS - A controller for a power converter includes a first amplification stage and a second amplification stage coupled to the first amplification stage. The first amplification stage generates a first amplified signal at a first terminal of an energy storage element according to an output signal the power converter. The second amplification stage generates a second amplified signal at a second terminal of the energy storage element and varies the second amplified signal in response to a change in the output signal. The second amplification stage further decreases the variation of the second amplified signal based on the first amplified signal. | 02-02-2012 |
20110316447 | CIRCUITS AND METHODS FOR POWERING LIGHT SOURCES - A controller for regulating a current through a light-emitting diode (LED) light source includes a first reference pin for receiving a first reference signal indicative of a target average level, and a dimming control pin for receiving a dimming signal. The controller regulates an average level of the current to the target average level. The current is regulated according to the first reference signal and a ramp signal if the dimming signal has a first level. The ramp signal is synchronized with the dimming signal. The current is cut off if the dimming signal has a second level. | 12-29-2011 |
20110289237 | INTELLIGENT BUS ADDRESS SELF-CONFIGURATION IN A MULTI-MODULE SYSTEM - According to one aspect there is disclosed an apparatus. The apparatus may include a first module including at least one bus port configured to couple the first module to a bus; a first configuration port configured to receive an input indicating whether address assignment is enabled or disabled for the first module; a second configuration port configured to provide an output indicating whether address assignment is enabled or disabled for a second module; a memory configured to store a unique address, wherein the unique address is configured to identify the first module; and a controller configured to be coupled to a central management unit via the bus, the controller further configured to receive the unique address from the central management unit, determine whether address assignment is enabled for the first module and to store the unique address in the memory if address assignment is enabled for the first module, enable or disable address assignment for a second module when the second module is coupled to the first module, and the controller further configured to enable or disable address assignment for the second module based, at least in part, on a message from the central management unit. | 11-24-2011 |
20110285323 | DRIVING CIRCUIT WITH DIMMING CONTROLLER FOR DRIVING LIGHT SOURCES - A dimming controller for controlling dimming of a light-emitting diode (LED) light source includes a monitoring terminal and a control terminal. The monitoring terminal receives a switch monitoring signal indicative of an operation of a power switch which transfers power from an AC power source to a bridge rectifier when the power switch is on. A power converter receives input power from the bridge rectifier and provides output power to the LED light source. The control terminal generates a control signal to adjust the output power according to the switch monitoring signal so as to control dimming of the LED light source. | 11-24-2011 |
20110248648 | CIRCUITS AND METHODS FOR POWERING LIGHT SOURCES - A driving circuit for powering a plurality of light-emitting diode (LED) light sources includes a power converter and a plurality of current balance controllers. The power converter receives an input voltage and provides a regulated voltage to the LED light sources. The current balance controllers coupled to the power converter control a plurality of currents through the LED light sources respectively. The current balance controllers receive a first reference signal indicative of a target average level and a second reference signal indicative of a maximum transient level, and regulate an average current of each of the currents to the target average level and a transient level of each of the currents within the maximum transient level. | 10-13-2011 |
20110241622 | SYSTEMS AND METHODS FOR CELL BALANCING - A method for balancing multiple battery cells which are grouped into multiple battery modules includes: obtaining cell parameters of the battery cells, respectively; calculating an average cell parameter for each of the battery modules according to the cell parameters; identifying a donator module and a receiver module from the battery modules based upon the average cell parameter; and transferring energy from the donator module to the receiver module to balance the battery cells. | 10-06-2011 |
20110239053 | FLEXIBLE BUS ARCHITECTURE FOR MONITORING AND CONTROL OF BATTERY PACK - A method for diagnosing a control system for a stacked battery is disclosed. The control system comprises a plurality of processors, a plurality of controllers, and a monitoring unit (control unit). The method comprises sending a diagnostic information from the central unit to a top processor of the plurality of processors, transmitting a return information from the top processor of the plurality of processors to the central unit, comparing the diagnostic information sent from the central unit with the return information received by the central unit, and indicating a communication problem if the diagnostic information sent from the central unit is different from the return information received by the central unit. The steps are repeated by eliminating the top processor from a previous cycle and assigning a new top processor if there is no problem with the reconfigurable communication system. | 09-29-2011 |
20110234170 | CIRCUITS, SYSTEMS AND METHODS FOR BALANCING BATTERY CELLS - A circuit for balancing a plurality of battery cells includes a controller and an electronic control unit (ECU) coupled to the controller. The controller samples multiple discharging cell voltages of the battery cells respectively at a predetermined time during a discharging state of the battery cells, and samples multiple charging cell voltages of the battery cells respectively during a charging state of the battery cells. The ECU processes the charging cell voltages and the discharging cell voltages, thereby providing control commands for the controller to control the battery cells to achieve a balance. | 09-29-2011 |
20110227538 | CIRCUITS FOR GENERATING REFERENCE SIGNALS - A circuit for generating a reference signal can include a first resistor string and a second resistor string substantially identical to the first resistor string, a trim circuit, and a resistor controller. The trim circuit coupled to the first resistor string is operable for generating the reference signal according to a terminal voltage at a terminal in the first resistor string. The resistor controller coupled to the first resistor string and the second resistor string is operable for selectively shorting out a resistor in the first resistor string and a corresponding resistor in the second resistor string. | 09-22-2011 |
20110227506 | CONTROLLERS, SYSTEMS AND METHODS FOR CONTROLLING POWER OF LIGHT SOURCES - A controller for controlling power to an LED light source includes a control terminal and control circuitry coupled to the control terminal. The control terminal provides a control signal to control a transformer. A cycle of the control signal includes a charging period, a discharging period, and an adjusting period. The control circuitry controls a primary winding of the transformer to receive power during the charging period and controls a secondary winding of the transformer to discharge power to the LED light source during the discharging period. The control circuitry further varies a frequency of the control signal periodically by controlling the adjusting period. | 09-22-2011 |
20110227496 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A controller for controlling dimming of a light-emitting diode (LED) light source provides a pulse signal by comparing a sensing signal indicative of a current flowing through the LED light source to a reference signal. The controller controls the current through the LED light source according to the pulse signal during a first state of a pulse-width modulation signal and cutting off the current through the LED light source during a second state of the pulse-width modulation signal. The controller receives a dimming request signal indicative of an operation of a power switch coupled between an AC power source and a bridge rectifier and adjusts both a level of the reference signal and a duty cycle of the pulse-width modulation signal based on the dimming request signal. | 09-22-2011 |
20110221795 | BACKLIGHT CONTROLLER FOR DRIVING LIGHT SOURCES - A backlight controller for driving multiple light emitting diode (LED) strings includes feedback circuitry, phase array circuitry, and encoder circuitry. The feedback circuitry generates multiple feedback signals indicative of currents flowing through the LED strings respectively. The encoder circuitry generates a code signal indicative of a total number of operative LED strings among the multiple LED strings based on the feedback signals. The phase array circuitry generates multiple saw tooth signals according to the code signal. A phase shift amount between two adjacent signals of the saw tooth signals is determined by the total number of the operative LED strings. The phase array circuitry compares each of the saw tooth signals with a dimming control signal to generate multiple phase shift signals so as to respectively control the operative LED strings. | 09-15-2011 |
20110221346 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - Embodiments in accordance with the present invention provide circuits and methods for driving light sources, e.g., a light-emitting diode (LED) light source. In one embodiment, a printed circuit board (PCB) includes a bridge rectifier rectifying an AC voltage to a rectified AC voltage, an LED light source, and a first switch coupled to the LED light source in series controlling a current through the LED light source according to a predetermined current reference. The LED light source and the first switch coupled in series receive the rectified AC voltage while the first switch is controlled linearly. | 09-15-2011 |
20110181199 | CONTROLLERS, SYSTEMS AND METHODS FOR CONTROLLING DIMMING OF LIGHT SOURCES - A controller for controlling dimming of an LED light source includes a control terminal and dimming control circuitry coupled to the control terminal. The control terminal provides a driving signal to control a control switch coupled to the LED light source, thereby controlling the dimming of the LED light source. The dimming control circuitry generates the driving signal according to a set of operations of a power switch that transfers an AC signal. The dimming control circuitry further adjusts the driving signal by counting multiple waves of the AC signal to control the dimming of the LED light source. | 07-28-2011 |
20110145629 | FLEXIBLE BUS ARCHITECTURE FOR MONITORING AND CONTROL OF BATTERY PACK - The present invention provides a control system which is used for a stacked battery of a plurality of battery packs. Each battery pack has a plurality of battery cells coupled in series. The control system is capable of reconfiguring communication among the battery packs in the stacked battery, and comprises a plurality of processors, a plurality of controllers, and a monitoring unit. The processors are coupled to the battery packs. Two adjacent processors among the processors are able to communicate with each other though a first bus. The controllers are coupled to the battery packs. Two adjacent controllers among the controllers are able to communicate with each other through a second bus. The processors are capable of communicating with the controllers through a third bus. The monitoring unit is used for monitoring communications among the plurality of processors and communications among the plurality of controllers. The monitoring unit is capable of detecting communication problems on the first bus and/or the second bus. The monitoring unit further is capable of reconfiguring communication paths among the plurality of processors and communication path among the plurality of controllers. | 06-16-2011 |
20110140533 | ASSIGNING ADDRESSES TO MULTIPLE CASCADE BATTERY MODULES IN ELECTRIC OR ELECTRIC HYBRID VEHICLES - According to one aspect there is disclosed an apparatus. The apparatus may include a first battery module. The first battery module may include a switch configured to open or close a first current path from a first terminal of a battery to a second terminal of the battery when a second battery module is coupled to the first battery module; a current sensor configured to sense a current in a second current path, the second current path different from the first current path; and a local controller configured to control a state of the switch to open or close the switch, wherein closing the switch is configured to close the first current path, the local controller is further configured to detect the sensed current in the second current path, and the local controller is further configured to receive and store an identifier based at least in part on the current detected in the second current path. | 06-16-2011 |
20110076525 | BATTERY MANAGEMENT SYSTEM WITH ENERGY BALANCE AMONG MULTIPLE BATTERY CELLS - The present invention provides a battery circuit including a first battery cell with a first parameter having a first value and a second battery cell with a second parameter having a second value. The second battery cell is coupled to the first battery cell in series. The battery circuit further includes a magnetic device operable for storing energy transferred from the first battery cell via a first winding coupled to the first battery cell and for releasing the stored energy to the second battery cell via a second winding coupled to the second battery cell if the first value of the first parameter is greater than the second value of the second parameter. | 03-31-2011 |
20100332126 | INERTIAL NAVIGATION SYSTEM WITH ERROR CORRECTION BASED ON NAVIGATION MAP - An inertial navigation system with error correction based on a navigation map is disclosed herein. The inertial navigation system can include a trajectory calculator for calculating a position and an orientation of a moving object based on moving information of the moving object, an error correcting unit coupled to the trajectory calculator for correcting the position and the orientation of the moving object based on reference road information, and a storage unit coupled to the error correcting unit for storing geographical information of a road network and providing the reference road information according to the geographical information of the road network. | 12-30-2010 |
20100328156 | SYSTEM FOR DEMODULATING NAVIGATION BITS FROM SATELLITE SIGNALS - A signal processing system for demodulating navigation bits from a satellite signal is disclosed herein. The signal processing system includes a digital baseband processor for determining a boundary between two navigation bits in the navigation bits according to a first plurality of coarse acquisition (C/A) codes captured from the satellite signals, storing the first plurality of C/A codes, and demodulating a second plurality of C/A codes captured after determining the boundary to recover a first series of the navigation bits. The signal processing system further includes a complementary demodulating unit coupled to the digital baseband processor for demodulating the first plurality of C/A codes to recover a second series of the navigation bits. | 12-30-2010 |
20100328150 | NAVIGATION SYSTEM WITH ERROR-DETECTION ON DOPPLER FREQUENCIES OF SATELLITE SIGNALS - A navigation system for detecting error on Doppler frequencies of a plurality of satellite signals measured by the navigation system is disclosed herein. The navigation system includes an offset calculator for calculating offsets of the Doppler frequencies of the satellite signals during a predetermined time period and calculating an average value of the offsets. The navigation system further includes an error detecting unit coupled to the offset calculator. The error detecting unit compares the offsets of the Doppler frequencies of the satellite signals with the average value of the offsets and determines whether the satellite signals are unavailable according to corresponding comparison results. | 12-30-2010 |
20100264882 | CIRCUITS AND METHODS FOR BATTERY CHARGING - Circuits and methods for battery charging are disclosed. In one embodiment, the battery charging circuit comprises an AC to DC converter, a charging control switch, and a charger controller. The AC to DC converter provides a charging power to a battery pack. The charging control switch is coupled between the AC to DC converter and the battery pack. The charging control switch transfers the charging power to the battery pack. The charger controller detects a battery status of the battery pack and controls the charging control switch to charge the battery pack in a continuous charging mode or a pulse charging mode according to the battery status. The charger controller also controls the AC to DC converter to regulate the charging power according to the battery status. | 10-21-2010 |
20100183019 | METHOD AND APPARATUS FOR DISTRIBUTING DATA PACKETS TO MULTIPLE NETWORK ADDRESSES - A network device for transferring a data packet from a source address to a destination address is provided. The network device includes a plurality of network addresses for indicating locations of a plurality of network processing units, and further including a data packet distributing unit for transferring a data packet to the network processing units in sequence by replacing a destination address of the data packet with the network addresses. The data packet distributing unit performs the actions of determining whether the data packet has been transferred to each of the network processing units, transferring the data packet to a network processing unit after replacing the destination address of the data packet with a corresponding network address if the data packet has not been transferred to the network processing unit, and outputting the data packet if the data packet has been transferred to each of the processing units. | 07-22-2010 |
20100171660 | NOVAS HYBRID POSITIONING TECHNOLOGY USING TERRESTRIAL DIGITAL BROADCASTING SIGNAL (DBS) AND GLOBAL POSITIONING SYSTEM (GPS) SATELLITE SIGNAL - A positioning method using global positioning system (GPS) signal and digital broadcasting system (DBS) signal. The method includes detecting a presence status of the GPS signal through a signal detector in a receiver, detecting a presence status of the DBS signal through the signal detector, determining the signal strength of the GPS signal if the GPS signal is detected, determining the signal strength of the DBS signal if the DBS signal is detected, choosing one positioning mode among a plurality of positioning modes in a signal processing unit in the receiver based on signal presence status and the signal strength of a detected signal, and determining a location of the receiver based on the chosen positioning mode. The plurality of positioning modes includes standalone GPS mode, assisted GPS (AGPS) mode, assisted GPS positioning with DBS assist mode, DBS positioning with GPS assist mode, standalone DBS mode, and assist DBS mode. | 07-08-2010 |
20100138909 | VPN AND FIREWALL INTEGRATED SYSTEM - The present disclosure provides an integrated VPN/Firewall system that uses both hardware (firmware) and software to optimize the efficiency of both VPN and firewall functions. The hardware portions of the VPN and firewall are designed in flexible and scalable layers to permit high-speed processing without sacrificing system security. The software portions are configured to provide interfacing with hardware components, report and rules management control. | 06-03-2010 |
20100039322 | Signal Acquisition Systems With Applications Of General Clocks - A global positioning system (GPS) system includes a clock module for providing multiple counter values at multiple time points. The GPS system also includes a system module coupled to the clock module. The system module is capable of obtaining a time value for each time point according to a set of signals from a signal source. The system module is further capable of calculating a set of parameters based on the counter values and the time value for each time point, and determining an estimated time value based on the parameters and a present counter value from the clock module. | 02-18-2010 |
20100030470 | GLOBAL POSITIONING SYSTEM AND DEAD RECKONING (GPS&DR) INTEGRATED NAVIGATION SYSTEM - A global positioning system and dead reckoning (GPS&DR) integrated navigation system includes a GPS receiver coupled to a moving object for periodically generating GPS navigation information of said moving object, a DR system coupled to said moving object for periodically calculating DR navigation information of said moving object, and a filter coupled to said GPS receiver and said DR system for periodically calculating navigation information of said moving object, wherein said filter gets observation information by integrating said GPS navigation information and said DR navigation information according to a weight value of said GPS navigation information and a weight value of said DR navigation information, and calculates a current navigation information by integrating said observation information with previous navigation information from a plurality of previous cycles. | 02-04-2010 |
20090278499 | METHOD AND ELECTRONIC CIRCUIT FOR EFFICIENT BATTERY WAKE UP CHARGING - A method for efficiently charging a battery. The method includes producing a first signal having a voltage level dependent on the voltage of the battery comparing the voltage level of the first signal with a settable voltage representative of a maximum battery charging current, and producing a second signal representative of a charging current to be provided to the battery, the second signal having a voltage level selected to be the lower voltage level between the first signal and the settable voltage. | 11-12-2009 |
20090110028 | AUTO-RANGING THERMISTOR-BASED TEMPERATURE DETECTION SYSTEM - An apparatus for detecting temperature includes an adjustable current source operable for supplying a current, a thermistor coupled to said adjustable current source, and an auto-range hysteresis logic coupled to said thermistor and said adjustable current source operable for outputting a signal to control said adjustable current source by sensing a voltage across said thermistor. A method for detecting temperature is also disclosed. | 04-30-2009 |
20090001937 | Power management systems with controllable adapter output - A power management system includes a battery pack having a battery controller and includes an adapter operable for charging the battery pack and powering a system load. The adapter generates a power recognition signal indicative of a maximum adapter power and receives a control signal. The battery controller in the battery pack receives the power recognition signal and generates the control signal to adjust an output power of the adapter according to a status of the battery pack and a status of the system load. | 01-01-2009 |
20080252335 | ROBUST AND ECONOMIC SOLUTION FOR FPGA BITFILE UPGRADE - A system for FPGA (Field Programmable Gate Array) upgrade includes: an FPGA, a FLASH memory and a CPLD. The FLASH memory includes a first section configured to store a workable version of bit files for the FPGA and a second section configured to store a backup version of bit files for the FPGA. The CPLD is coupled to the FPGA and the FLASH memory. The CPLD is configured to download the bit files from the FLASH memory to the FPGA to provide the FPGA with functionality. As a result: the CPLD communicates with CPU to upgrade the bit files in the FLASH memory, and indicates to the CPU which version of bit files has been downloaded to the FPGA. | 10-16-2008 |
20080252272 | VOLTAGE REGULATOR WITH COTROL OF SWITCHING ELEMENTS - A regulator comprises an output terminal producing a regulated output voltage, a first comparator, a second comparator, a first sourcing circuit coupled to the output terminal, and a first sinking circuit coupled to the output terminal. The first comparator compares a feedback signal representative of the output voltage and a first sourcing reference signal that is less than a reference signal. The second comparator compares the feedback signal and a first sinking reference signal that is greater than the reference signal. The first sourcing circuit is configured to be responsive to the first comparator by sourcing a first current to the output terminal. The first sinking circuit is configured to be responsive to the second comparator by sinking a second current from the output terminal. | 10-16-2008 |
20080246413 | DC/AC COLD CATHODE FLUORESCENT LAMP INVERTER - A DC/AC cold cathode fluorescent lamp (CCFL) inverter circuit includes a transformer with a primary winding and a secondary winding for providing increased voltage to a CCFL, a first and second MOSFET switches for selectively allowing direct current of a first polarity and a second polarity to flow through the transformer respectively. The primary and secondary windings of the transformer are electrically coupled to ground. A capacitor divider is electrically coupled to the CCFL for providing a first voltage signal representing a voltage across the CCFL. A first feedback signal line receives the first voltage signal. A timer circuit is coupled to the first feedback signal line for providing a time-out sequence of a predetermined duration when the first voltage signal exceeds a predetermined threshold. A protection circuit shuts down the first switch and the second switch when the first voltage signal exceeds the predetermined threshold after the predetermined duration. | 10-09-2008 |
20080224681 | Controller for a DC to DC Converter - A controller for a DC to DC converter. The controller may include a resistor coupled to a switching node of the DC to DC converter. The switching node may be coupled to a high side switch and a low side switch of the DC to DC converter. A current level through the resistor may be responsive to a state of the high side switch and said low side switch. The controller may further include ramp generation circuitry responsive to the current level through the resistor to provide a ramp signal, and pulse width modulation (PWM) circuitry configured to generate a PWM signal in response to at least the ramp signal. | 09-18-2008 |