04th week of 2012 patent applcation highlights part 19 |
Patent application number | Title | Published |
20120019146 | Detector circuit and method for controlling a fluorescent lamp - A detector circuit for controlling at least one fluorescent lamp is provided, wherein the detector circuit is configured such that an inactive fluorescent lamp can be detected if a first signal is present at least one of a first input and a second signal is present at a second input in a detection interval after a start-up phase. | 2012-01-26 |
20120019147 | DIMMABLE COMPACT FLUORESCENT LIGHTING DEVICE - A dimmable compact fluorescent lighting device includes a safety protection circuit, an electro-magnetic compatibility (EMC) circuit, a rectification and filter circuit, a power factor correction circuit, a trigger circuit, a switching and anti-saturation circuit, a resonant circuit, and a filament pre-heating protection circuit. Alternate current from an electric main is chopped by a thyristor to form a non-sinusoidal voltage that, after passing through the EMC circuit, is subjected to rectification and filtering and fed through the power factor correction circuit for correction of the non-sinusoidal voltage and suppress of high order resonant waves, so as to supply a stable DC working voltage to a subsequent stage. Two transistors are used to alternate conduct so as to generate oscillation, which induces a high frequency sinusoidal AC voltage supplied through an electronic ballast to drive a lighting tube to emit light. | 2012-01-26 |
20120019148 | HIGH VOLTAGE POWER SUPPLY FOR POWERING A MAGNETRON IN A UV CURING LAMP ASSEMBLY - A power supply for use in a UV curing lamp assembly is disclosed. The power supply is powered by two intermediate frequency (200-400 Hz) low voltage sinusoidal power sources that drive the primary windings of a dual laminated transformer. The low voltage sinusoidal power sources are configured to have different phases. The out-of-phase low voltage sine wave sources are converted to high voltage sine waves on the secondary windings of the dual laminated transformer having the same phase difference relationship. A single rectifier comprising six high voltage diodes, called a ladder rectifier, combine the two out-of-phase sine waves into a single, approximately DC output power source. By modulating a phase difference between two input sine wave power sources, the approximate DC output voltage exiting the ladder rectifier may be alternated between a low ripple mode of about a 13.84% ripple, a high current mode, a high voltage mode, and an intermediate mode with a ripple in the range of about 13.84% to about 100%. | 2012-01-26 |
20120019149 | Proximity Sensor, Control Method Thereof, and Electronic Apparatus Equipped with the Same - A proximity sensor, a control method thereof and an electronic apparatus equipped with the proximity sensor are disclosed. The proximity sensor connected to a light-emitting module includes a light source, a light receiver and a control module. The light source emits lights at predetermined time intervals. The light receiver receives reflected lights of the emitted lights that are reflected from an object. The control module determines whether an average value of intensity values of the reflected lights is larger than a threshold value. If yes, the control module further determines whether a difference between a highest and a lowest intensity value of the reflected lights falls in a preset range. If yes, the control module would control the light-emitting module to change to a different light mode thereof. When a user reacts to the different light mode, the system will be able to tell whether a real user is present. | 2012-01-26 |
20120019150 | POWER SUPPLY DEVICE AND LIGHTING SYSTEM HAVING THE SAME - Disclosed herein are a power supply device and a lighting system having the same. The lighting system includes a power supply device including at least two converters that receive AC power and convert it into DC power and selectively outputting any one DC power thereof; and a plurality of LED lighting units each receiving the DC power from the power supply device and operating. The lighting system can stably supply power and facilitate maintenance thereof due to the use of the integrated power supply device. | 2012-01-26 |
20120019151 | AMBIENT LIGHT CALIBRATION FOR ENERGY EFFICIENCY IN DISPLAY SYSTEMS - A method, system, and apparatus that can be used to operate a display device in an energy efficient manner. The energy efficient display device can effectively and efficiently compensate for changes in ambient light incident at a display screen of the display device using an internal ambient light sensor to provide control signals to a backlight driver. | 2012-01-26 |
20120019152 | DISPLAY BRIGHTNESS CONTROL BASED ON AMBIENT LIGHT ANGLES - Methods and devices are provided for controlling the brightness of a display for an electronic device based on ambient light conditions. In one embodiment, an electronic device may employ one or more brightness adjustment profiles for changing the brightness of a display based on ambient light levels and/or the angle of incidence of one or more ambient light sources. In certain embodiments, one or more ambient light sensors may be designed to perceive the ambient light level differently based on the angle of incidence of a light source. The perceived ambient light level may then be used to adjust the display brightness based on the one or more brightness adjustment profiles. In other embodiments, one or more ambient light sensors may be designed to detect the angle of incidence of an ambient light source. In these embodiments, the detected angle and the ambient light level may be used to adjust the display brightness. | 2012-01-26 |
20120019153 | Direct Current Driving Circuit of a Light Emitting Device - The invention provides a direct current driving circuit of a light emitting device for driving a plurality of light emitting devices. The direct current driving circuit of the light emitting device comprises a rectification unit, a constant current unit and a light emitting module. The rectification unit is configured to rectify an outside alternate current voltage to output a direct current voltage. The constant current unit is electrically connected to the rectification unit, and generates a direct current corresponding to the direct current voltage to drive the light emitting module. The light emitting module comprises a plurality of light emitting devices and at least one diode connected in serial, and the light emitting devices are respectively connected in parallel to voltage stabilizing capacitances. The driving circuit can provide stabilized direct current load driving with high efficiency and high power factor. | 2012-01-26 |
20120019154 | DRIVING CIRCUIT FOR DRIVING LIGHT EMITTING DIODES AND DIMMER - A power supply unit provides a voltage, and a driving current to a series of light emitting diodes. A dimming unit adjusts a duty cycle of an original dimming signal to generate a dimming signal according to the driving current and an ideal current. A current sink coupled to the series of light emitting diodes adjusts a duty cycle of the driving current according to the dimming signal. | 2012-01-26 |
20120019155 | METHOD OF DIMMING - A power supply unit provides a voltage, and a driving current to a series of light emitting diodes. A dimming unit adjusts a duty cycle of an original dimming signal to generate a dimming signal according to the driving current and an ideal current. A current sink coupled to the series of light emitting diodes adjusts a duty cycle of the driving current according to the dimming signal. | 2012-01-26 |
20120019156 | LED STRING DRIVER WITH NON-DISSIPATIVE REACTANCE BALANCER - A solid state lighting arrangement constituted of: a power source providing a current which is discontinuous in at least one direction; a plurality of light emitting diode (LED) strings arranged to receive the provided current from the power source; and a plurality of reactance elements, each of the plurality of reactance elements arranged in series with a particular one of the plurality of LED strings, such that current flowing from the power source through each of the LED strings creates a voltage drop across the series arranged reactance element, wherein the voltage drop across each of the series arranged reactance elements responsive to the discontinuous current is at least 10 times greater than the maximum difference between the voltage drops among the plurality of LED strings. | 2012-01-26 |
20120019157 | POWER SUPPLY APPARATUS FOR LIGHT EMITTING DIODE - A power supply apparatus for LED is provided. The power supply apparatus for LED includes a transformer, a first output unit, and a second output unit. The transformer includes a primary winding, a secondary winding receiving a power induced from the primary winding, and a tertiary winding receiving the power induced from the primary winding. The first output unit is connected to the secondary winding of the transformer, and outputs a first power current to an LED in a first operating condition. The second output unit is connected to the tertiary winding of the transformer, and outputs a second power current to the LED in a second operating condition. When the LED is connected to the power supply apparatus for LED, the power supply apparatus allows a current equal to or less than a predetermined current to flow in the LED, thereby protecting the LED from an overcurrent. | 2012-01-26 |
20120019158 | Polarity-reversible dimming controller having function of switching light source - A polarity-reversible dimming controller having function of switching light source has a power supply module and a dimming control module. The dimming control module receives an external PWM dimming signal to control a feedback signal of the power supply module so as to dim or power on/off an LED lamp. The dimming control module has an output current switching circuit, a switch control circuit and a dimming control circuit. The output current switching circuit performs a PWM control over a current outputted from the power supply module by using the external PWM dimming signal to maintain chromacity of the LED lamp as a constant. The switch control circuit turns off the PWM controller to enter a standby mode for saving power once the PWM dimming signal exceeds a threshold value. As a full-wave rectification is performed on the PWM dimming signal, the polarity match issue upon assembling can be disregarded. | 2012-01-26 |
20120019159 | GAS-DISCHARGE LAMP CONTROLLER UTILIZING A NOVEL REHEATING FREQUENCY GENERATION MECHANISM - A gas-discharge lamp controller utilizing a novel preheating frequency generation mechanism, including: a resistance sensing means, used to generate a sensed voltage when coupled to an external series resistor-capacitor network, the external series resistor-capacitor network being biased between a first supply voltage and a reference ground; a sample and hold circuit, used to generate a sampled voltage of the sensed voltage under the control of a latch signal; and a mapping circuit, used to generate a control voltage according to a function of the sampled voltage. | 2012-01-26 |
20120019160 | LIGHT EMITTING DIODE DRIVING METHOD AND DRIVING CIRCUIT - A LED driving method includes steps of: providing a first pulse width modulation (PWM) signal for determining a brightness of a LED; obtaining a duty cycle of the first PWM signal; and selectively enabling the LED to work with a PWM dimming mode or a direct current (DC) dimming mode according to a relative relationship between a magnitude of the obtained duty cycle and a preset threshold value. Since the LED is performed with a two stage brightness control by use of mixed dimming mode, the driving efficiency of the LED can be improved. | 2012-01-26 |
20120019161 | LIGHT-EMITTING ELECTROCHEMICAL CELL AND SYSTEM, USE THEREOF AND METHOD FOR THEIR OPERATION - A light-emitting device comprises a first electrode, a second electrode, and a light-emitting active material contacting and separating the first and second electrodes. The device comprises a combination of a conjugated polymer and an electrolyte, said electrolyte comprising ions, allowing for electrochemical doping of the conjugated polymer. In the device, a ratio between the ions and the conjugated polymer is selected to allow for the formation of:
| 2012-01-26 |
20120019162 | MODULAR WIRELESS LIGHTING CONTROL SYSTEM USING A COMMON BALLAST CONTROL INTERFACE - Disclosed is a modular lighting system that incorporates wireless technology and a standard interface. The lighting system may be installed in new buildings or retrofitted into existing buildings in such a way that provides many lighting configurations and programmability options while minimizing the amount of new wiring. The system includes a transceiver that controls one or more lamps using a dimming ballast or a relay and a low cost ballast. The dimming ballast, and the relay (if used) provide low voltage power to the transceiver over a cable having a standard interface, such as an RJ11 telephone jack. The transceiver provides on/off switching control and dimmer control, through the same cable, to the relay or dimming ballast. The transceiver can be located in the same room as the lamps it controls, or remotely located. A central computer or controller can control multiple transceivers over a wireless link. | 2012-01-26 |
20120019163 | Light emitting device driving circuit - The invention provides a light emitting device driving circuit, comprising a rectification unit, a current limiting unit and a load. The load comprises a first light emitting device, a reverse voltage providing unit and a second light emitting device connected in serial. When the rectification unit rectifies an alternate current voltage to output a direct current voltage, and the current limiting unit limits the direct current in a predetermined value, the direct current is provided to the first light emitting device or the second light emitting device for operation. The reverse voltage providing unit provides a reverse voltage to reduce the total operating voltage of the light emitting devices in order to enhance the driving efficiency and the power factor. | 2012-01-26 |
20120019164 | CALIBRATION METHOD FOR LED LIGHTING SYSTEMS - A method of operating a lighting fixture comprising a plurality of discrete illumination sources of distinguishably different color coordinates comprises determining target color coordinates and luminous flux at which to operate the lighting fixture, determining input electrical power values for each of the plurality of discrete illumination sources that substantially produce the target color coordinates and luminous flux by referencing a calibration data lookup table having calibration data based on measurements of the plurality of discrete illumination sources, determining a color mixing zone defined by three distinguishably different color coordinates of the plurality of discrete illumination sources within which the target color coordinates lie according to the calibration data, determining luminous flux ratios for each of the plurality of discrete illumination sources having one of the three distinguishably different color coordinates defining the color mixing zone that substantially produces the target color coordinates, and determining input electrical power levels for each of the plurality of discrete illumination sources that generate the determined luminous flux ratios. | 2012-01-26 |
20120019165 | ILLUMINATION DEVICE - The illumination device disclosed in the present specification has a light source, a touchless sensor for detecting proximity and movement of an object without contact, and a control unit for controlling the driving of the light source on the basis of an output of the touchless sensor. | 2012-01-26 |
20120019166 | POWER SOURCE UNIT FOR LED LAMPS, AND LED LAMP SYSTEM - A dedicated power source for LED lamps capable of reliably detecting attachment of an LED lamp is provided. | 2012-01-26 |
20120019167 | Backlight Control Circuit and Method Thereof - A backlight control circuit and method thereof are provided to control the backlight of a backlight module so as to enhance the dynamic contrast ratio and save power. The backlight control circuit includes an average luminance detection circuit, a luminance distribution detection unit, a pulse width control circuit and a pulse width modulator. The average luminance detection circuit detects the average luminance of a frame which includes a plurality of pixels; the luminance distribution detection unit detects the pixel luminance distribution of the frame; the pulse width control circuit generates a pulse width control signal according to the average luminance and the pixel luminance distribution of the frame; and the pulse width modulator generates a pulse width modulation (PWM) signal according to the pulse width control signal, so as to control the backlight of the backlight module. | 2012-01-26 |
20120019168 | ILLUMINATION CONTROL SYSTEM AND METHOD FOR CONTROLLING ILLUMINATION - According to one embodiment, an illumination control system includes a motion sensor and a central management server. The motion sensor acquires position information and action information of a person. The central management server holds holding position information of an illumination unit and necessary light amount information for action information of the person, acquires a necessary amount of light corresponding to the action information of the person based on the necessary light amount information, calculates a brightness control amount based on the position information of the illumination unit, and controls the illumination unit using the brightness control amount. | 2012-01-26 |
20120019169 | DIMMABLE AMALGAM LAMP AND METHOD FOR OPERATING THE AMALGAM LAMP WHILE DIMMED - A dimmable amalgam lamp is provided having a quartz glass tube enclosing a discharge chamber comprising a filling gas, and closed by pinching at both ends thereof, through which at least one current feedthrough is fed through one coil-shaped electrode each in the discharge chamber, wherein at least one of the pinches has a hollow space having an opening to the discharge chamber for receiving a deposit of amalgam that can be heated by the coil-shaped electrode. In order to provide a method for operating the amalgam lamp on this basis, ensuring a high efficiency of UV-C radiation even when dimmed, the invention proposes that the current feedthrough include an outgoing line and a return line for an additional current I | 2012-01-26 |
20120019170 | SEMICONDUCTOR LIGHT SOURCE LIGHTING CIRCUIT AND CONTROL METHOD - A semiconductor light source lighting circuit includes a transistor and a current detection resistor provided in series in a semiconductor light source current supply path, a control circuit for controlling the transistor so as to decrease any difference between the voltage occurring at the current detection resistor and a reference voltage, and a bypass resistor to establish a bypass path for the current supplied to the semiconductor light source, where a first end of the bypass path is located at a connection node between the transistor and the semiconductor light source. | 2012-01-26 |
20120019171 | SYSTEM, METHOD AND PORTABLE CONTROLLER FOR PROGRAMMING AND CALIBRATION OF A PLURALITY OF LIGHT SOURCE UNITS FOR PHOTO-REACTIVE/CURING APPLICATIONS - A system, method, and portable or mobile controller are provided for network management of functions such as monitoring, control, programming, and calibration of a plurality of (UV) light sources, for photo-reactive and photo-curing applications. Beneficially, a reliable and controlled closed-loop feedback network is provided in which a dose of light, or exposure profile, for e.g. spot curing, can be programmed into a light source unit to perform a highly repeatable operation across a single or multiple work stations. The system is scalable up to 1000's of workstations. | 2012-01-26 |
20120019172 | SYSTEM, ARCHITECTURE, AND METHOD FOR MINIMIZING POWER CONSUMPTION AND INCREASING PERFORMANCE IN ELECTRIC VEHICLES - An electric vehicle accomplishes speed changes through the use of electronically controlled, multiple electric motor configurations that are coupled to an output drive shaft instead of a speed change transmission. A parallel-coupled motor configuration includes at least two motors that are each coupled to the output drive shaft through respective gear arrangements, each gear arrangement having a respective gear ratio. In a serially-coupled motor configuration, the stator of the second motor is coupled to the rotor of the first motor, where the rotor of the second motor is coupled to the output drive shaft. The required torque to reach or maintain a desired vehicle speed can be obtained by selective energization of either one or both of the motors (in both multi-motor configurations). Two motors are also coupled to a differential gear so that the rotational speed contributed by both motors are additive at the output shaft. | 2012-01-26 |
20120019173 | METHOD AND ELECTRIC COMBINED DEVICE FOR POWERING AND CHARGING WITH COMPENSATION MEANS - The invention relates to a combined device and method for powering and charging, that comprises an AC motor ( | 2012-01-26 |
20120019174 | Drive System, Method for Operating a Drive System, and Use - A drive system and method for operating a drive system, including an electromotor, inverter, energy store, | 2012-01-26 |
20120019175 | SEALED BATTERY AND MANUFACTURING METHOD THEREOF, AND VEHICLE AND DEVICE HAVING THE SAME MOUNTED THEREON - The sealed battery has a battery container ( | 2012-01-26 |
20120019176 | POWER SUPPLY SYSTEM AND ELECTRIC POWERED VEHICLE USING THE SAME - If it is determined that excess power is generated based on overcharge information of a power storage device, a controller starts an operation of consuming the excess power by an excessive power consuming circuit. The controller counts elapsed time from the time point when the power consuming operation started, and if the counted elapsed time exceeds a minimum on-time set in advance, switches the excessive power consuming circuit from active to inactive state. The minimum on-time is set based on a pattern that is expected to cause generation of excessive regenerative power from an AC electric motor because of abrupt change in running status of an electric powered vehicle mounting a motor drive system. | 2012-01-26 |
20120019177 | Power Tool Having An Electric Brake - The invention relates to a method for decelerating a drive movement of a power tool and to a power tool suitable for carrying out the method, having a drive driven by a motor, an energy supply device for the provision of electrical energy, a controller having a motor controller for activating the motor and an operating-state recognition module which is to detect at least one operating-state variable and, as a function of this, to output a brake signal, the controller being designed to initiate, as a function of the brake signal, a braking procedure in which brake cycles are provided which have a first time segment, in which the motor is short-circuited, and a second time segment in which current is fed to the motor opposite to its original direction of rotation. | 2012-01-26 |
20120019178 | POWER CONVERSION APPARATUS AND METHOD OF CONTROLLING CAPACITOR VOLTAGE OF POWER CONVERSION APPARATUS - A power conversion apparatus includes: a line breaker that is connected in series to a direct-current power supply; a first capacitor that is connected in parallel to the direct-current power supply through the line breaker; a discharge circuit that includes a resistor and a first switching circuit connected in series and is connected in parallel to the first capacitor; a power converter for driving a synchronous machine; a second capacitor that is connected in parallel to a direct-current side of the power converter; a second switching circuit that is connected in series between the first capacitor and the second capacitor; and a control circuit for controlling the discharge circuit. The control circuit controls the discharge circuit on the basis of the voltage of the first capacitor and the voltage of the second capacitor. | 2012-01-26 |
20120019179 | CONTROL DEVICE AND CONTROL METHOD FOR MOTOR - A control device divides 360° corresponding to one cycle of a resolver angle into N zones, and determines whether or not a resolver angle θ in the current cycle exceeds a division border. When determined that resolver angle θ in the current cycle exceeds a division border, the control device calculates a time difference ΔT[n] between a calculation time T[n] in the immediately preceding resolver cycle and a calculation time T in the current cycle. The control device also calculates a resolver angle variation Δθ[n] with time difference ΔT[n] by adding 360° to the difference between resolver angle θ obtained in the current cycle and a resolver angle θ[n] obtained in the immediately preceding resolver cycle. The control device then calculates a rotation speed NM by multiplying, by a coefficient K, a value obtained by dividing Δθ[n] by ΔT[n]. | 2012-01-26 |
20120019180 | METHOD FOR STARTING A PERMANENT MAGNET SINGLE-PHASE SYNCHRONOUS ELECTRIC MOTOR AND ELECTRONIC DEVICE FOR IMPLEMENTING SAID METHOD - Method for starting a single-phase synchronous electric motor using permanent magnets with simple and cost-effective implementation, said method comprising a step of application of a control logic of the switch that provides a first and a second condition for switching on: | 2012-01-26 |
20120019181 | Power converter for rotating electric machine - A power converter for converting power supplied to a rotating electric machine that includes windings of N-phase (N≧2), includes an inverter section, a voltage detecting portion, one or more resistors, and an abnormality detecting portion. The voltage detecting portion detects a voltage applied to each winding of M-phase, where 1≦M2012-01-26 | |
20120019182 | MAGNETIC-DRIVE-PULSATION MOTOR - To develop a motor which can directly drive a brushless motor using a conventional circuit for an inverter without smoothing circuit and a circuit for a matrix converter that are for a brushed motor that operates on single-phase 100 V. Magnetic cores are attached to a motor shaft to increase inertial force. A magnetic-drive-pulsation motor which modulates torque is realized using force of attraction and repulsion generated by outer magnets and magnetic cores. The magnetic-drive-pulsation motor can be driven using the inverter and the matrix converter on single-phase 100 V power supply. | 2012-01-26 |
20120019183 | DRIVE CONTROL SYSTEM - A rotary breaker that interrupts a transmission of a driving force from a motor to a drive mechanism unit is provided between the motor having a permanent magnet incorporated therein and the drive mechanism unit of an electric vehicle. A second controller controls the rotary breaker based on operation states of a power converting unit that has a power converter that drives the motor by converting a direct-current voltage or an alternate-current voltage into an alternate-current voltage with an arbitrary frequency and a first controller that controls the power converter, operation states of the motor and the rotary breaker, and an operation state of the second controller itself. | 2012-01-26 |
20120019184 | DEVICE AND METHOD FOR POWER-SAVING DRIVING OF DEVICE HAVING SAME LOAD PATTERN - A power-saving driving device is provided for a same load pattern device | 2012-01-26 |
20120019185 | METHODS FOR CONTROLLING ONE OR MORE POSITIONING ACTUATORS AND DEVICES THEREOF - A method, computer readable medium, and apparatus for controlling a moveable element includes generating and providing with a control device one or more driving signals to one or more positioning actuators to move the moveable element towards a target position based on a target travel distance and a calibration value. The control device determines when a post-movement position of the moveable element is outside of a tolerance range of the target position. The control device recalibrates the calibration value when the post-movement position is determined to be outside of the tolerance range. The control device repeats the generating, the determining, and the recalibrating as open loop steps until the post-movement position is within the tolerance range or until a limit, if any, on attempts is reached. | 2012-01-26 |
20120019186 | METHOD OF DETECTING AN OPERATING CONDITION OF AN ELECTRIC STEPPER MOTOR - An electrical stepper motor comprises a magnetical rotor and at least two electromagnetical driving coils for causing rotation of the rotator. A method of detecting an operating condition of the as e.g. a stall state of the electrical stepper motor comprises the steps of connecting one contact pin (P, M) of at least one of the electromagnetical driving coils via a high-impedance resistor (R | 2012-01-26 |
20120019187 | METHOD FOR CONTROLLING A PERMANENT MAGNET SYNCHRONOUS ELECTRIC MOTOR AT STEADY-STATE, ELECTRONIC DEVICE FOR IMPLEMENTING SAID METHOD AND MOTOR ASSEMBLY COMPRISING SAID ELECTRONIC DEVICE - A method, which is efficient and cost-effective to implement, for controlling, at steady-state, a synchronous electric motor comprising a permanent magnet rotor and a stator provided with windings connected to an electrical grid by means of a switch controlled by a processing unit, said method comprising the following steps: periodically switching on said switch by means of a PWM output of said processing unit; continuously verifying the shift with respect to an ideal operating condition of the motor; and modifying the switched on period of the switch in feedback to approach said ideal operating condition of the motor. | 2012-01-26 |
20120019188 | INDUCTION MOTOR CONTROL DEVICE AND INDUCTION MOTOR GROUP CONTROL SYSTEM - In an induction motor group control system, magnetic energy recovery switches ( | 2012-01-26 |
20120019189 | METHOD AND APPARATUS FOR CHARGING BATTERY USING SOLAR BATTERY - A method and an apparatus for charging a battery using a solar cell are provided. The method includes detecting an output state of the solar cell, searching a mapped charging current amount corresponding to the detected output state of the solar cell, setting a charging current amount of a charging unit for charging the battery based on the found charging current amount, and charging the battery with the set charging current amount. The method may maximize charging efficiency of a battery using the solar cell. Furthermore, the method may prevent output power consumption of a solar cell. Accordingly, the method may improve charging efficiency in comparison with a portable terminal of the related art in the same condition to shorten a charging time. | 2012-01-26 |
20120019190 | PASSIVE POWER MANAGEMENT AND BATTERY CHARGING FOR A HYBRID FUEL CELL / BATTERY SYSTEM - Disclosed herein is a circuit for passively managing power between a fuel cell stack and a battery in a hybrid system. The circuit includes a buck-boost converter circuit, a direct charge circuit; and a network which interconnects them. The network is configured so that in response to a voltage level in the network being lower than or equal to a maximum battery charge voltage, the battery is charged via the direct charge circuit; and in response to another voltage level in the network which is higher than the maximum battery charge voltage, the battery is charged via the buck-boost converter circuit. Also disclosed is a device incorporating the circuit and a method of passively managing power. | 2012-01-26 |
20120019191 | FUEL CELL SYSTEM, AND ELECTRIC VEHICLE EQUIPPED WITH THE FUEL CELL SYSTEM - A fuel cell system comprising a fuel cell that generates electricity through an electrochemical reaction between a fuel gas and an oxidant gas, and a control portion that controls amount of electricity generation at a time of starting the fuel cell, characterized in that the control portion has voltage drop control means for controlling speed of dropping a starting voltage of the fuel cell from an open-circuit voltage to a high-potential-avoiding voltage according to an initial voltage of the fuel cell and to a pre-determined threshold voltage that is lower than the high-potential-avoiding voltage, when the starting voltage of the fuel cell is dropped from the open-circuit voltage to the high-potential-avoiding voltage. | 2012-01-26 |
20120019192 | SEMICONDUCTOR DEVICE, COMMUNICATION SYSTEM, AND METHOD OF CHARGING THE SEMICONDUCTOR DEVICE - An object of the present invention to provide a semiconductor device including a battery that can be wirelessly charged, in which the battery can be charged even when the semiconductor device is not put close to a power feeder. Such a semiconductor device has a structure including an antenna circuit, a communication control circuit to conduct wireless communication via the antenna circuit, a battery to be charged with electric power which is externally wirelessly fed via the antenna circuit, and an oscillator circuit to wirelessly feed electric power via the antenna circuit. In addition, the battery in the semiconductor device is wirelessly charged and the semiconductor device externally feeds electric power wirelessly to a chargeable battery in another semiconductor device. | 2012-01-26 |
20120019193 | CHARGING AND POWER SUPPLYING METHOD FOR TERMAL, AND TERMINAL - Embodiments of the present invention relate to a charging method for a terminal, a power supplying method for a terminal, and a terminal. The terminal comprises at least a master device supply. The method comprises: detecting a power level of a battery of a second terminal when the second terminal is in connection with the terminal, and when the power level of the battery of the second terminal is less than a predetermined first charge threshold, controlling the master device supply to be connected with the battery of the second terminal, such that the master device supply charges the battery of the second terminal. According to the embodiments of the present invention, it is possible to ensure that the battery of the second terminal can carry as much power as possible. in case that the power of the battery of the terminal is low, the battery of the second terminal can supply power to the terminal and the second terminal to maintain the operation of them. As a result, the usage, stability, and convenience of the terminal can be improved. | 2012-01-26 |
20120019194 | LEAKAGE CURRENT REDUCTION IN COMBINED MOTOR DRIVE AND ENERGY STORAGE RECHARGE SYSTEM - A charging method using an alternating current (AC) line voltage for conductive charging of an energy storage system (ESS) coupled to a polyphase motor drive circuit communicated to a polyphase motor, the polyphase motor drive circuit including a plurality M of driver stages, one driver stage for each phase of the polyphase motor with each driver stage coupled across the energy storage system, the method including the steps of: (a) coupling a first connector providing the line voltage to a second connector coupled to the plurality of driver stages; (b) interrupting selectably the line voltage from communication with the plurality of driver stages; (c) measuring both an ESS common mode voltage of the energy storage system with respect to a voltage reference and a line common mode voltage of the line voltage with respect to the voltage reference while the line voltage communication to the plurality of driver stages is interrupted; (d) operating a particular one of the driver stages to power a common mode voltage driver to align the ESS common mode voltage with the line common mode voltage while the line voltage communication to the plurality of driver stages is interrupted; and thereafter (e) suspending the interrupting step (b) when a difference between aid ESS common mode voltage and the line common mode voltage is less than a first predetermined value, the suspending step (e) communicating the line voltage to the plurality of driver stages; and thereafter (f) converting the line voltage to a charging voltage communicated to the energy storage system using a set of the plurality of driver stages not including the particular one driver stage. | 2012-01-26 |
20120019195 | MODULAR ENERGY ACCUMULATION AND STORAGE SYSTEM - The present invention is an energy accumulation and storage system which improves the harnessing of energy, specifically electrical energy, from low efficiency or intermittent energy sources and allows for the rapid transfer of such harnessed energy to mobile battery operated applications such as automobiles, lawn mowers, and other vehicle types. | 2012-01-26 |
20120019196 | APPARATUS, SYSTEM AND METHOD FOR CHARGING BATTERIES - An apparatus, system, and method for charging batteries is provided. The apparatus comprises a monitoring unit configured for coupling to a battery and power source. The monitoring unit configured to acquire a control value indicative of a parameter, and to control the charging of the battery responsive thereto. The system comprises a plurality of battery chargers configured for coupling with respective batteries and a common power source. Each charger configured to obtain information relating to a parameter, to communicate the information to the other chargers, to acquire a control value from the information obtained thereby or received from another charger, and to control the charging of the associated battery based on the acquired control value. The method comprises providing a monitoring unit coupled to a battery and power source, acquiring a control value indicative of a parameter, and controlling the charging of the battery responsive to the control value. | 2012-01-26 |
20120019197 | APPARATUS AND METHOD TO CHARGE A BATTERY - An apparatus and a method to charge a battery, the battery charging apparatus including: a battery unit which is chargeable; a battery charging unit which charges the battery unit; and a controller which adjusts a preset charge voltage of the battery unit based on a charge allowance capacity of the battery unit to have a predetermined value, and controls the battery charging unit to output the adjusted charge voltage and to charge the battery unit. Accordingly, the apparatus and method are capable of charging a battery based on a charge allowance capacity decreased owing to deterioration of the battery to safely use the battery and to extend a life of the battery. | 2012-01-26 |
20120019198 | Charging Station for Portable Electronic Devices - A charging station for portable electronic devices includes a base having a substantially vertical and forward facing wall and at least one suction cup secured to the wall to temporarily secure the portable electronic devices to the wall in a position that the portable electronic devices can be viewed and operated while recharging. When more than one suction cup is provided they can be secured in laterally spaced-apart positions so that multiple portable electronic devices can be secured side-by-side for recharging or more than one suction cup can secure a portable electronic device. The suction cups can also be secured in vertically spaced apart positions so that the suction cup can engage the portable electronic device at a desired height or so that more than one suction cup can secure the portable electronic device. The charging station can also organize mail, keys, wallets, and the like. | 2012-01-26 |
20120019199 | Emergency Power Generating Source for Mobile Devices - Various portable electronic devices are respectively equipped so that manually provided mechanical energy is converted into electrical energy and stored there in. The stored electrical energy can be used to power the respective portable electronic device for at least a brief period. Suitably equipped portable electronic devices can thus be operated in emergency situations without external sources of electrical power, replacement batteries, or the like. | 2012-01-26 |
20120019200 | CHARGING SYSTEM AND CHARGER - A charger that charges a battery unit including a secondary battery, includes a receiving unit, a detection unit, a determination unit, and a control unit. The receiving unit receives, from the battery unit, battery state information indicating a state of the battery unit, if the secondary battery is being charged. The detection unit detects charge state information indicating the state of the battery unit, if the secondary battery is being charged. The determination unit determines, using the battery state information and the charge state information, whether the battery unit is in a normal state. The control unit controls charging of the secondary battery in the battery unit depending on whether the battery unit is in the normal state. | 2012-01-26 |
20120019201 | SMART CHARGER ALIGNMENT INDICATOR - Electrical energy is transmitted to charge the implanted medical device, and an electrical parameter (e.g., a steady-state voltage) indicating a rate at which the implanted medical device is charged by the electrical energy is detected. A threshold (e.g., by modifying a stored threshold value) at which the charge strength indicator generates a user-discernible signal is adjusted based on the detected electrical parameter. | 2012-01-26 |
20120019202 | RETENTION OF RECHARGEABLE DEVICES - There is disclosed a system and method for retaining portable rechargeable devices to recharging stations wherein one or other or both of the recharging station and the portable device are provided with connecting means adapted for temporary releasable connection of the two. This is particularly advantageous when used with recharging stations which permit the device to be recharged in multiple places on the recharging station, providing a positive means of retaining the device. This is particularly advantageous if the recharging station is to be used in a mobile environment such as a car, or on a wall or ceiling. | 2012-01-26 |
20120019203 | ENERGY STORAGE AND VEHICLE CHARGING SYSTEM AND METHOD OF OPERATION - An energy storage system for a substation on an electrical power network is provided. The energy storage system is coupled to receive and store electrical power. The stored electrical power may then be used to either charge vehicles or meeting the needs of other discretionary or interruptible loads with an electric propulsion, or to provide electrical power a feeder connected to essential service loads such as police stations, hospitals and traffic control. In one embodiment, the substation also utilizes the energy storage system in a peak shaving mode of operation. | 2012-01-26 |
20120019204 | Car Navigation System - If a route has not yet been set in a car navigation apparatus, and when a vehicle approaches a specific crossing or a charging station located ahead of a current-driving road, or when remaining charge of a battery becomes less, the navigation apparatus retrieves and displays information about charging stations of the respective branching directions. When the vehicle approaches a specific crossing, the navigation apparatus guides information for indicating whether or not a charging station is present, a distance, and whether or not the vehicle can reach the charging station with respect to each of directions branched from the specific crossing. Also, when a charging station is located ahead of the road, the navigation apparatus retrieves charging stations of the respective branching destinations at a specific crossing located in front of the road, and judges whether or not the vehicle can be driven up to the respective retrieved charging stations. | 2012-01-26 |
20120019205 | Hybrid Vehicle Recharging System and Method of Operation - A system and method for recharging a plug-in hybrid vehicle. The system includes a controller that schedules the recharging of the vehicles on local electrical distribution networks. The system arranges the schedule to minimize the demand loading on the local distribution network to more efficiently operate power plants providing electrical power to the distribution networks. A system for collecting charges associated with the recharging of plug-in hybrid vehicles is also disclosed providing for prepaid utility accounts. | 2012-01-26 |
20120019206 | VEHICLE CHARGING PORT ARRANGEMENT - A vehicle charging port arrangement is provided with a vehicle body, an electric charging port and a charging-in-progress indicator. The vehicle body includes a vehicle cabin and a vehicle front end portion having an upper surface. The electric charging port is arranged on the vehicle front end portion. The electric charging port is configured to receive an electric charging connector. The charging-in-progress indicator is movably mounted to the vehicle front end portion to move in a vertical direction between a charging port access position that provides access to the electric charging port and a charging port blocking position that prevents access to the electric charging port. The charging-in-progress indicator is visible from inside the vehicle cabin looking over the upper surface of the vehicle front end portion while the charging-in-progress indicator is in the charging port access position. | 2012-01-26 |
20120019207 | OUTLET ASSEMBLY WITH PORTABLE CHARGER - An outlet assembly with a portable charger including a power strip and a portable charger is disclosed. The power strip has a main body and a first power output interface. The main body has at least one power socket, and the first power output interface is located on the main body for supplying an AC power. The portable charger includes a power input interface and a second power output interface located on a casing. An AC to DC converting circuit and a power storage unit are located inside the casing. The power input interface may be fitted to the first power output interface, and the AC to DC converting circuit converts the AC power into DC to recharge the power storage unit. The portable charger may be used independently to provide the from the power storage unit through the second power output interface. | 2012-01-26 |
20120019208 | CHARGING STATION FOR PORTABLE ELECTRONIC DEVICES - A charging station for portable electronic devices includes a base having a substantially vertical and forward facing wall and a plurality of suction cups secured to the wall to temporarily secure the portable electronic devices to the wall in a position that the portable electronic devices can be viewed and operated while recharging. The suction cups can be secured in a plurality of laterally spaced-apart positions so that multiple portable electronic devices can be secured side-by-side for recharging or more than one suction cup can secure a larger portable electronic device. The suction cups can also be secured in a plurality of vertically spaced apart positions so that the suction cup can engage the portable electronic device at a selected height or so that more than one suction cup can secure the portable electronic device. The charging station also organizes mail, keys, wallets, and the like. | 2012-01-26 |
20120019209 | MORE READILY AVAILABLE TRACTION BATTERY - The invention relates to a traction battery having at least two serially connected battery modules, each of which has a first battery module pole, a second battery module pole, and at least one inserted series circuit and/or parallel circuit of battery cells. A first terminal of the series circuit of battery modules is connected to a first battery pole, while a second terminal of the series circuit of battery modules is connected to a second battery pole. According to the invention, at least one battery module of the at least two serially connected battery modules is a first battery module which has a first disconnecting device, a second disconnecting device, and a bridging device. When triggered accordingly, the first disconnecting device interrupts the connection between the series circuit and/or parallel circuit of battery cells and the first battery module pole, and when triggered accordingly, the second disconnecting device interrupts the connection between the series circuit and/or parallel circuit of battery cells and the second battery module pole. Furthermore, the first battery module pole and the second battery module pole are short-circuited via the bridging device inserted between the first battery module pole and the second battery module pole when the bridging device is triggered accordingly. Additionally or alternatively, at least one battery module of the at least two serially connected battery modules is a second battery module that has at least one charging and disconnecting device, a disconnecting device, and a bridging device. When triggered accordingly, the at least one charging and disconnecting device interrupts the connection between the series circuit and/or parallel circuit of battery cells and the first battery module pole and limits charging or compensating currents occurring when the battery module or the battery comprising the battery module is connected. Furthermore, when triggered accordingly, the interrupting device interrupts the connection between the series circuit and/or parallel circuit of battery cells and the second battery module pole, and the first battery module pole and the second battery module pole are short-circuited via the bridging device inserted between the first battery module pole and the second battery module pole when the bridging device is triggered accordingly. | 2012-01-26 |
20120019210 | DC POWER SUPPLY SYSTEM AND OUTPUT CONTROL METHOD - Suppliable power per unit time from a secondary battery ( | 2012-01-26 |
20120019211 | PROTECTION OF A THIN-LAYER BATTERY - A method for protecting a thin-layer battery connected to an intermittent load including the steps of periodically operating the battery at its maximum discharge current, and disconnecting the battery as soon as the voltage across it reaches a threshold value greater than its critical voltage for the maximum discharge current. | 2012-01-26 |
20120019212 | BIDIRECTIONAL POLYPHASE MULTIMODE CONVERTER INCLUDING BOOST AND BUCK-BOOST MODES - A charging method using a multiphase line voltage for charging an energy storage system (ESS) using a polyphase motor drive circuit communicated to a polyphase motor, the polyphase motor drive circuit including a plurality M of driver stages, one driver stage for each phase of the polyphase motor with each driver stage coupled across the energy storage system, the method including the steps of: (a) determining a charge mode responsive to a comparison of the multiphase line voltage to a voltage of the energy storage system, the determined charge mode including a boost mode when the voltage of the energy storage system has a first predetermined relationship to the multiphase line voltage and the determined charge mode including a boost-buck mode when the voltage of the energy storage system has a second predetermined relationship to the multiphase line voltage; (b) converting, when the charge mode includes the boost mode, the multiphase line voltage to a first charging voltage using a first set of N number of the plurality of driver stages, with N less than M, wherein the first charging voltage is communicated to the energy storage system, and wherein the first charging voltage is greater than the multiphase line voltage; and (c) converting, when the charge mode includes the boost-buck mode, the multiphase line voltage to a second charging voltage using a second set of P number of the plurality of driver stages when in the boost-buck mode, with P greater than N, wherein the second charging voltage is communicated to the energy storage system, and wherein the second charging voltage is less than the multiphase line voltage. | 2012-01-26 |
20120019213 | Efficient Power Supply/Charger - An electronic circuit that is normally used in a car cigarette lighter adapter is disclosed. It is designed to meet the high performance requirements of the Apple Computer specification for charging iPod and iPhone, while still retaining low cost. The circuit is composed of input protection components, surge regulator, FET switch, inductor-capacitor smoothing filter, gate drive components, voltage regulator, current regulator, current sense element, and voltage reference. | 2012-01-26 |
20120019214 | Self-Powered Functional Device Using On-Chip Power Generation - An apparatus, system, and method for a self-powered device using on-chip power generation. In some embodiments, the apparatus includes a substrate, a power generation module on the substrate, and a power storage module on the substrate. The power generation module may include a thermoelectric generator made of bismuth telluride. | 2012-01-26 |
20120019215 | METHOD FOR CHARGING MULTIPLE RECHARGEABLE ENERGY STORAGE SYSTEMS AND RELATED SYSTEMS AND METHODS - Some embodiments include a method for charging multiple rechargeable energy storage systems. Other embodiments or related systems and methods are disclosed. | 2012-01-26 |
20120019216 | ACTUATION OF SHAPE MEMORY ALLOY MATERIALS USING ULTRACAPACITORS - A system, in certain embodiments, includes a power supply. The power supply includes an ultracapacitor configured to be charged by a DC source. The power supply also includes a first switch that enables charging of the ultracapacitor by the DC source when in a closed position and disables charging of the ultracapacitor when in an open position. The power supply further includes a second switch configured to enable discharging of the ultracapacitor when in a closed position and to disable discharging of the ultracapacitor when in an open position. As the ultracapacitor is discharged, a current is supplied to actuate a shape memory alloy element. | 2012-01-26 |
20120019217 | CONTROL CONCEPT FOR A DIGITALLY CONTROLLED MAGNETIC SUPPLY DEVICE - A method and a device control a magnetic supply device. The method includes the steps of executing a base structure of a control as a two-loop control having a voltage control loop for a magnetic voltage and a current control loop for the magnetic current, wherein the two control loops or circuits are preferably combined into one controller. The voltage control loop is executed as a status controller, wherein the return parameters for the status controller are adaptively adjusted as necessary to the behavior of a current converter, an output filter and a load. The behavior of the current converter, the output filter and the load are modeled by an observer (e.g. Luenberger observer, Kaiman filter) and the observer adapted to the effective behavior of the current converter, the output filter and the load is tracked. Finally, the current control loop is implemented as an adaptive PI controller. | 2012-01-26 |
20120019218 | Constant on-time switching regulator, and control method and on-time calculation circuit therefor - The present invention discloses a constant on-time switching regulator, a control method therefor, and an on-time calculation circuit for calculating an on-time period of a constant on-time switching regulator. The on-time calculation circuit calculates on-time according to practical conditions. It includes: a driver gate receiving a gate signal of a power switch in a switching regulator, the driver gate operating between high and low levels of a first reference voltage and ground; a low pass filter receiving an output from the driver gate and generating a second reference voltage, a ratio between the second reference voltage and the first reference voltage being substantially the same as a duty ratio of the gate signal; and an on-time generator comparing the second reference voltage with a ramp signal to determine an on-time of the power switch. | 2012-01-26 |
20120019219 | Constant on-time switching regulator, and control method and on-time calculation circuit therefor - The present invention discloses a constant on-time switching regulator, a control method therefor, and an on-time calculation circuit for calculating an on-time period of a constant on-time switching regulator. The on-time calculation circuit calculates on-time according to practical conditions. It includes: a driver gate receiving a gate signal of a power switch in a switching regulator, the driver gate operating between high and low levels of a first reference voltage and ground; a low pass filter receiving an output from the driver gate and generating a second reference voltage, a ratio between the second reference voltage and the first reference voltage being substantially the same as a duty ratio of the gate signal; and an on-time generator comparing the second reference voltage with a ramp signal to determine an on-time of the power switch. | 2012-01-26 |
20120019220 | HYBRID POWER CONVERTER - Power converter circuits, structures, and methods are disclosed herein. In one embodiment, a hybrid converter can include: (i) a first switching device controllable by a control signal; (ii) an inductor coupled to the first switching device and an output; and (iii) a control circuit configured to receive feedback from the output for generation of the control signal to control the first switching device, where the control circuit includes a first detection circuit configured to detect first and second output conditions, the control circuit being configured to operate the first switching device in a switch control in response to the control signal when the first output condition is detected, and to operate the first switching device in a linear control region when the second output condition is detected. | 2012-01-26 |
20120019221 | 5 Volt Tolerant Voltage Regulator - A voltage regulator circuit comprises an error amplifier for generating, an error signal responsive to a reference voltage in a feedback signal. A feedback circuit provides the feedback voltage signal to the error amplifier and a driver circuit provides regulated output voltage responsive to the input voltage in the error signal. Short circuit protection circuitry selectively protects transistors within the error amplifier, the feedback amplifier and the driver circuit responsive to a short circuit protection enablement signal. | 2012-01-26 |
20120019222 | Photoelectric Transducer Device - An object is to obtain a rectifier having a small voltage drop and to reduce the fabrication cost of a converter circuit. A photoelectric transducer device including: a photoelectric transducer element; and a converter circuit stepping up or stepping down an output of the photoelectric transducer element and including a switching element and a rectifier, in which the switching element is a first oxide semiconductor transistor that is normally off and in which the rectifier is a second oxide semiconductor transistor that is diode-connected and normally on. | 2012-01-26 |
20120019223 | MINIATURE HIGH-VOLTAGE POWER SUPPLIES - The present invention provides miniature power supplies and circuitry for powering high-voltage devices. | 2012-01-26 |
20120019224 | DC-DC Converter - A dual-mode switching voltage regulator has a duty cycle that varies with the input and output voltages so as to dynamically compensate for changes in the operating conditions. The switching voltage regulator uses input and output voltages/currents to optimize the duty cycle of the signals applied to a pair of switches disposed in the regulator. In the PFM mode, a control block senses the time that a first switch used to discharge an inductor is turned off. If the control block senses that the first switch is opened too early, the control block increases the on-time of a second switch used to charge the inductor. If the control block senses that the first switch is opened too late, the control block decreases the on-time of the second switch. | 2012-01-26 |
20120019225 | Control circuit and method for reducing output ripple in constant on-time switching regulator - The present invention discloses a control circuit for reducing output ripple in a constant on-time switching regulator and a method thereof, for controlling a power stage. The control circuit determines whether a zero current period wherein an output current is zero is longer than a threshold period, and switches the on-time period to a shorter period if it is longer, whereby the power stage operates according to the shorter period while still in the discontinuous conduction mode (DCM). | 2012-01-26 |
20120019226 | TRACKING CURRENT THROUGH SWITCHING DEVICES - A system can include a switching circuit configured to conduct electrical current through at least one switch device thereof during an activation interval of the switch device in response to a periodic control signal. A tracking system is configured to provide a tracking signal indicative of a predetermined point of the activation interval. Sampling circuitry is configured to measure the electrical current at the predetermined point of the activation interval in response to the tracking signal, such that the sampling circuitry provides an output signal indicative of an average electrical current. | 2012-01-26 |
20120019227 | POWER SUPPLY CIRCUIT - An apparatus for selecting either a High VIN path or a Low VIN path from a voltage source to a low voltage circuit is disclosed. The apparatus has a clamped step down circuit operable to select the High VIN path when a voltage level from the voltage source is above or equal to a pre-determined voltage level and, a power supply control circuit operable to select the Low VIN path when the voltage level from the voltage source is below the pre-determined voltage level. | 2012-01-26 |
20120019228 | SYNCHRONOUS RECTIFIER CONTROL FOR SYNCHRONOUS BOOST CONVERTER - A synchronous boost DC/DC conversion system comprises an input for receiving a DC input voltage, an output for producing a DC output voltage, a power switch controllable to adjust an output signal of the conversion system, and an inductor coupled to the input. A synchronous rectifier is configurable to create a conduction path between the inductor and the output to provide the inductor discharge. A control circuit is provided for controlling the synchronous rectifier as the input voltage approaches the output voltage, so as to adjust average impedance of the conduction path over a discharge period of the inductor. | 2012-01-26 |
20120019229 | VOLTAGE REGULATING CIRCUIT FOR PORTABLE ELECTRONIC DEVICE - A regulating circuit is used to regulate an output from a power supply to a load. The regulating circuit includes a regulator and a voltage dividing. The voltage dividing is connected between the power supply and the regulator. | 2012-01-26 |
20120019230 | DC/DC CONVERTER CIRCUIT AND METHOD FOR CONTROLLING A DC/DC CONVERTER CIRCUIT - A DC/DC converter circuit to be used in the field of MPPT for solar inverters, for step-up DC/DC conversion for high output voltages, and for chargers in electrical vehicles. The circuit comprises a first DC terminal and a second DC terminal, a first DC voltage being defined there between. It further comprises a positive split DC terminal and a midpoint terminal, a positive split DC voltage being defined there between. A negative split DC terminal is provided, a negative split DC voltage being defined between said negative split DC terminal and said midpoint terminal. A first switch and a second switch are provided, and a converter inductance is storing electric energy therein. A first diode is connected between a first terminal of said first switch and said positive split DC terminal, and a second diode is coupled between an internal midpoint and said midpoint terminal. | 2012-01-26 |
20120019231 | Variable Voltage Converter with Direct Output Voltage Clamping - A power conversion circuit includes a variable voltage converter (VVC) with a stabilizing means for stabilizing its output voltage. The stabilizing means can be in the form of a diode that clamps the VVC output voltage to the VVC input voltage so that the output voltage does not drop below the input voltage when a load imposes a sudden power demand. The stabilizing means also enables a bypass mode in which transient power can be provided from a power source to an inverter without current flow through the VVC inductor or switches. When embodied as a diode, the stabilizing means can increase the maximum power that can be transferred by the power conversion circuit, improve the power response of the circuit, minimize control instability, and reduce power losses. | 2012-01-26 |
20120019232 | Current Source with Tunable Voltage-Current Coefficient - A current source providing an output current with a fixed current range includes a bias circuit, a resistor, a current mirror, and a controller. The bias circuit provides a first voltage weighted with a first tunable coefficient and a second voltage weighted with a second tunable coefficient. The resistor has a tunable resistance for determining a bias current according to a voltage difference between the first and the second voltages and the tunable resistance. The current mirror generates the output current according to the bias current. The controller adjusts the tunable resistance and one of the first and the second tunable coefficients to achieve a voltage-current coefficient with different values, while the bias current and the output current are kept within a fixed current range. | 2012-01-26 |
20120019233 | CURRENT SENSOR CONSISTING OF A CABLE FOR ATTACHMENT IN THE FORM OF A LOOP - The sensor comprises a cable ( | 2012-01-26 |
20120019234 | SENSOR ASSEMBLY - A sensor assembly includes a magnetic track having a plurality of magnetic poles separated by a plurality of pole junctions. The sensor assembly also includes a first magnetic sensor disposed proximate a high-resolution portion of the magnetic track and a second magnetic sensor disposed proximate a reference portion of the magnetic track. The second magnetic sensor spans adjacent pole junctions in the magnetic track. Each of the adjacent pole junctions includes a high-resolution segment corresponding with the high-resolution portion of the magnetic track and a reference segment corresponding with the reference portion of the magnetic track. The reference segment of each pole junction is one of offset and aligned with the corresponding high-resolution segment in each pole junction. | 2012-01-26 |
20120019235 | Position Sensor For Linear Synchronous Motors Employing Halbach Arrays - A position sensor suitable for use in linear synchronous motor (LSM) drive systems employing Halbach arrays to create their magnetic fields is described. The system has several advantages over previously employed ones, especially in its simplicity and its freedom from being affected by weather conditions, accumulated dirt, or electrical interference from the LSM system itself. | 2012-01-26 |
20120019236 | EDDY CURRENT DETECTION - Eddy current detection probes and related methods are disclosed. In some embodiments, the eddy current detection probes are hybrid probes, including a solid state sensor and a detection loop. In some embodiments, the eddy current detection probes include a drive coil and a detection loop, with the detection loop having a sensitive axis that is not parallel to principal axis of the drive coil. In some such embodiments, the sensitive axis of the detection loop is perpendicular to the principal axis of the drive coil. | 2012-01-26 |
20120019237 | BLADE TIP CLEARANCE MEASUREMENT SENSOR AND METHOD FOR GAS TURBINE ENGINES - An electromagnetic field sensor assembly for blade tip clearance measurement in a gas turbine engine is disclosed that includes a ceramic sensor body, a multi-layered wire coil wound about a distal end portion of the sensor body for producing an electromagnetic field, a ceramic well enclosing the sensor body and the coil, and a metallic housing surrounding the well and having an open distal end. | 2012-01-26 |
20120019238 | MAGNETIC INDUCTION TOMOGRAPHY SYSTEMS WITH COIL CONFIGURATION - A magnetic impedance tomography system comprises an excitation system with several excitation coils to generate an excitation magnetic field to induce eddy currents in an examination volume. For example, a solenoid configuration or parallel coils, e.g. in a Helmholtz configuration are employed, Further, a measurement system is provided with several measurement coils to measure the fields generated by the induced eddy currents. The measurement coils are arranged in a volumetric (3D) geometrical arrangement. The individual measurement coils being orientated substantially transverse to the field line of the excitation magnetic field of the excitation coils. A reconstructor receives measurement data from the measurement system and reconstruct an age of an object in the volume of interest from the measurement data. | 2012-01-26 |
20120019239 | DEVICE FOR THE NON-DESTRUCTIVE TESTING OF AN ELECTRICALLY CONDUCTIVE STRUCTURE - A device for non-destructive testing of an electrically conductive part including: an induction portion, a receiving portion, and a processor. The induction portion includes an inductor dissociated into n layers supplied at different frequencies f | 2012-01-26 |
20120019240 | DEVICE, INSTRUMENT AND PROCESS FOR DETECTING MAGNETICALLY LABELED ANALYTES - The present invention is directed to a device for quantitative analysis of an analyte in a liquid sample by detecting a magnetic label, an instrument for controlling the analysis process and displaying the results and a method for performing said analysis with said device and said instrument. | 2012-01-26 |
20120019241 | MAGNETIC FIELD SENSOR DEVICE, CORRESPONDING PRODUCTION METHOD, AND MAGNETIC FIELD MEASURING METHOD - A magnetic field sensor device and a corresponding production method are described. The magnetic field sensor device includes a substrate, which has a trench, a ferromagnetic nanowire formed in the trench, a first electrical connection for the electrical connection of a first end of the ferromagnetic nanowire, a second electrical connection for the electrical connection of a second end of the ferromagnetic nanowire, and a magnetic field detection device for detecting a magnetic field in the region of the nanowire. | 2012-01-26 |
20120019242 | METHOD AND APPARATUS FOR MONITORING A PROPERTY OF A SAMPLE - The present disclosure provides a method of monitoring a property of a sample, such as a nanoscopic property of the sample. The method comprises the steps of providing a quantum probe having a quantum state and exposing the quantum probe to the sample in a manner such that the property of the sample, in the proximity of the quantum probe, affects quantum coherence of the quantum probe. The method also comprises detecting a rate of quantum decoherence of the quantum probe to monitor the property of the sample. Further the present disclosure provides an apparatus for monitoring a property of a sample. | 2012-01-26 |
20120019243 | REDUCTION OF SLICE SELECT ARTIFACTS IN HALF PULSE EXCITATIONS USED IN ULTRASHORT TE (UTE) IMAGING - The present embodiments are directed towards artifact reduction in slice select pulse sequences utilized in ultra short echo time imaging sequences. In one embodiment, a method includes determining a desired slice select thickness, determining a radiofrequency pulse shape and duration based upon the desired slice select thickness while maintaining a desired relationship between excitation k space and radiofrequency amplitude, and determining radiofrequency scaling based on the determined radiofrequency pulse shape and duration. | 2012-01-26 |
20120019244 | COMPOSITE SPIN LOCKING PULSE SEQUENCE AND METHOD OF USING THE SAME - Present embodiments are directed towards a magnetic resonance imaging method. In one embodiment, the method includes (a) performing a first magnetic resonance imaging sequence including: (i) a first preparatory composite spin locking pulse sequence having a spin lock pulse bounded by similarly oriented spin tipping pulses; and (ii) an acquisition pulse sequence to acquire first magnetic resonance data. The method further includes (b) performing a second magnetic resonance imaging sequence including: (i) a second preparatory composite spin locking pulse sequence having a spin lock pulse bounded by oppositely oriented spin tipping pulses; and (ii) an acquisition pulse sequence to acquire second magnetic resonance data. The method also includes (c) storing the first and second magnetic resonance data. | 2012-01-26 |
20120019245 | CEST MRI METHODS FOR IMAGING OF METABOLITES AND THE USE OF SAME AS BIOMARKERS - The CEST effect for various neurotransmitters and energy metabolites in the brain and muscles and various endogenous metabolites in the liver, brain, and myocardium are imaged using MR imaging to illustrate a unique CEST effect that may be used to monitor the concentration of the metabolite and hence to characterize and monitor various disease states in the body correlated to the concentration of that metabolite. By adjusting the timing, amplitude, and length of the RF pulse as well as other parameters of the CEST pulse sequence to address the unique chemical shifts and exchange rates of the target, new targets with unique characteristics may be acquired using CEST MR imaging. | 2012-01-26 |