47th week of 2009 patent applcation highlights part 17 |
Patent application number | Title | Published |
20090284198 | SHORT CIRCUIT PHASE IDENTIFICATION METHOD - A vehicle drive apparatus includes a battery that is a direct current power source, a converter that increases the voltage of the battery, an inverter connected to a motor that drives the vehicle, an inverter connected to a motor generator that functions as a motor or generator, and a motor control device that controls the motor. The vehicle drive device is also provided with a voltmeter, non-energized state determination devices that determine a non-energized state of the inverters, and ammeters that detect currents applied to a motor from each phase arm of the inverters. Signals of these devices and a signal from the non-energized state determination device are sent to the motor control device. | 2009-11-19 |
20090284199 | Electric Power Converter - There are provided an electric power converter in which common-mode noise is suppressed without causing enlargement of components, increase in the number of components, a cost hike, and the like. The electric power converter is provided with a capacitor ( | 2009-11-19 |
20090284200 | AC motor driving circuit and electric vehicle driving circuit - In an AC motor driving circuit, a current source rectifier is provided on the output side of an AC generator and an AC motor is connected to the output side of the current source rectifier through a voltage source inverter. Along with this, one of terminals of each of a plurality of bidirectional switches is connected to its corresponding output terminal of the voltage source inverter, the other terminals of a plurality of the bidirectional switches are lumped together to be connected to one of terminals of a storage battery, and the other terminal of the storage battery is connected to one of DC input terminals of the voltage source inverter. This eliminates need for a large capacitor at a DC link and a reactor in a chopper which were previously necessary, by which the AC motor driving circuit is downsized. | 2009-11-19 |
20090284201 | MOTOR WITH MAGNETIC SENSORS - Disclosed is an electric motor that includes a stator with a plurality of main poles, each of which includes a coil, and a rotor rotatable about an axis and having a magnet with magnetic poles in which N and S poles are alternating. The motor further includes a first sensor group of a plurality of magnetic sensors fixed relative to the stator, and a second sensor group of a plurality of magnetic sensors fixed relative to the stator. When operating the motor, the first sensor group can be selected so as to rotate the rotor in a first direction. The second sensor group can be selected so as to rotate the rotor in a second direction opposite to the first direction. | 2009-11-19 |
20090284202 | Motor Control Device, Control Method, and Control Program - The temperature of a stator coil is measured by a temperature sensor ( | 2009-11-19 |
20090284203 | METHOD FOR CONTROLLING AN OPENING LEAF OF A VEHICLE WITH AN ANTI-TRAP FUNCTION - A method for controlling an opening leaf of a vehicle. The method detects whether a predetermined event is occurring in the absence of a predetermined situation likenable to a trapping incident and, if appropriate, lowers a function of detecting the situation likenable to a trapping incident. | 2009-11-19 |
20090284204 | METHOD AND APPARATUS FOR ESTIMATING INDUCTION MOTOR ROTOR TEMPERATURE - A method and apparatus to provide continuous and reliable rotor temperature estimates for line-connected induction motors during steady-state and/or dynamic motor operations. Rotor temperature is calculated from voltage and current measurements without any temperature or speed sensors. First, complex space vectors are synthesized from voltage and current measurements. Second, the instantaneous rotor speed is detected by calculating the rotational speed of a single rotor slot harmonic component with respect to the rotational speed of the fundamental frequency component. Third, the positive sequence fundamental frequency components are extracted from complex space vectors. Fourth, the rotor time constant is estimated in a model-reference adaptive system based on a dynamic induction motor equivalent circuit model. Finally, the rotor temperature is calculated according to the linear relationship between the rotor temperature and the estimated rotor time constant. Real-time induction motor thermal protection is achieved through this continuous tracking of the rotor temperature. | 2009-11-19 |
20090284205 | Motor driving device and method for making judgment on state of motor driving device - The motor driving device includes a first function of supplying power to a motor so that the motor generates a driving force to drive a driven member, a second function of detecting a current flowing through the motor, a third function of performing a power supply control in order that a value of the current detected by the second function is maintained within a target range, a fourth function of performing a power supply operation in which the motor is supplied with power for a predetermined time period which is short enough to avoid the driven member from being driven by the motor, before the third function performs the power supply control, and a fifth function of making a judgment on a state of each of the first to third functions on the basis of the value of the current detected by the second function during the predetermined time period. | 2009-11-19 |
20090284206 | MOTOR CONTROLLER FOR CONTROLLING AN ELECTRIC MOTOR - A motor controller for controlling at least one electric motor has an operating signal generator for generating an operating control signal for the at least one electric motor and also a sound signal generator for generating a sound control signal. A mixer superimposes the sound control signal on the operating control signal in order to obtain a control signal for the at least one electric motor. It is then possible to dispense with loudspeakers and the like in the appliance which contains an electric motor with such a motor controller in order to output, for example, signal tones which indicate an operating state of the appliance to the user. | 2009-11-19 |
20090284207 | Reaction force cancel system - Stabilization of a stage in a movable stage apparatus is enhanced, and increasing in size of the movable stage apparatus is suppressed. A reaction force cancel system is provided in the movable stage apparatus where a stage moves on a surface plate installed on a floor via a vibration-isolating spring, and cancels a reaction force generated on the surface plate upon movement of the stage. The reaction force cancel system includes a reaction force canceling actuator for applying a counter-thrust that is a force for reducing the reaction force to the surface plate. The reaction force canceling actuator is arranged at a lower position than a top surface of the surface plate so that the surface plate hangs over the reaction force canceling actuator. | 2009-11-19 |
20090284208 | MACHINE POSITION CONTROL DEVICE - Even when rigidity of a load drive system using a motor is relatively low, by performing a load position control in which a load position signal is fed back as stable as a semi-closed control system in which only a motor position signal is fed back, an accurate load position control can be made possible. Therefore, regarding a load position signal x | 2009-11-19 |
20090284209 | CONTROL DEVICE FOR CONTROLLING A MACHINE TOOL WHICH CAN BE USED TO DRIVE TOOLS - A control device for controlling a machine tool which can be used to drive tools includes a memory for storing a movement limit value which is respectively assigned to the tools and is specific to the respective tool. A desired value generating unit generates desired values for controlling the movement of the tool. The desired values are limited by a limiting unit on the basis of the assigned movement limit value in such a manner that the movement limit value is not exceeded when moving the tool. | 2009-11-19 |
20090284210 | ADAPTIVE SERVO CONTROL SYSTEM AND METHOD - A system and method of implementing servomechanism control without rate feedback is provided. A position feedback signal is filtered using a non-linear lead-lag filter that has a variable frequency response to thereby generate a compensated position feedback signal. A position error signal is generated from a position command signal and a sensed position signal, and the frequency response of the non-linear lead-lag filter is varied in response to the position error signal. A compensated position error signal is generated from the commanded position signal and the compensated position feedback signal. The compensated position error signal is at least selectively filtered using a non-linear integral filter that has a variable gain to thereby at least selectively supply a filtered position error signal. The gain of the non-linear integral filter is varied in response to the compensated position error signal. | 2009-11-19 |
20090284211 | METHOD AND APPARATUS FOR ESTIMATING INDUCTION MOTOR ELECTRICAL PARAMETERS - A method and apparatus to provide estimates of electrical parameters for line-connected induction motors during either steady-state or dynamic motor operations. The electrical parameters are calculated from the motor nameplate data and voltage and current measurements. No speed sensors or electronic injection circuits are needed. The method can be divided into 4 major steps. First, complex space vectors are synthesized from voltage and current measurements. Second, the instantaneous rotor speed is detected by calculating the rotational speed of a single rotor slot harmonic component with respect to the rotational speed of the fundamental frequency component. Third, the positive sequence fundamental frequency components are extracted from complex space vectors. Finally, least-squares estimates of the electrical parameters are determined from a dynamic induction motor equivalent circuit model. | 2009-11-19 |
20090284212 | METHODS AND APPARATUSES FOR ESTIMATING TRANSIENT SLIP - A method of determining a slip estimate associated with an induction motor through analysis of voltage and current signals. A fundamental frequency is calculated from a representation (e.g., complex representation) of the voltage signal, and a saliency frequency is calculated from a representation of the current signal. An estimation of slip quantity is calculated according to a slip estimation function that includes the saliency frequency, a saliency order, the fundamental frequency, a quantity of rotor slots, and a quantity of poles of the motor. | 2009-11-19 |
20090284213 | POWER MODULE LAYOUT FOR AUTOMOTIVE POWER CONVERTERS - An automotive power converter is provided. The automotive power converter includes a substrate, first and second electronic devices on the substrate, at least one conductive member coupled to the substrate and having a first device portion electrically coupled to the first electronic device and a second device portion electrically coupled to the second electronic device, and first and second terminals electrically coupled to the at least one conductive member. When a power supply is coupled to the first and second terminals, current flows from the first terminal to the first device portion substantially in a first direction and from the second terminal to the second device portion substantially in a second direction. The first direction has a first component and the second direction has a second component opposing the first component. | 2009-11-19 |
20090284214 | POWER MANAGEMENT METHOD USING FEEDBACK CURRENT BIAS FOR SIMULTANEOUSLY CONTROLLING LOW CELLS AND OVERALL STACK VOLTAGE - A method for controlling the current output from a fuel cell stack to prevent the stack voltage or the minimum fuel cell voltage from dropping below predetermined voltage set-points. The method for the stack voltage control includes determining whether the stack voltage has dropped to the predetermined voltage set-point, and if so, capturing and holding the actual stack current at that point as the maximum allowed stack current. If the stack voltage continues to fall below the voltage set-point, then the voltage set-point is subtracted from the actual voltage to get a positive error signal. Controller gains are then multiplied by the error signal to reduce the current allowed from the stack to drive the error signal to zero, and increase the stack voltage. The method for the minimum fuel cell voltage operates in the same manner, but with different values. | 2009-11-19 |
20090284215 | PORTABLE ELECTRONIC DEVICE HAVING SOLAR CELL - A portable electronic device includes a shell, a powering circuit, and solar cell. The shell includes a transparent section. The powering circuit is fixed in the shell and located facing the transparent section. The solar cell is connected to the powering circuit. When exterior light irradiates the transparent section, the solar cell converts the absorbed light into electrical voltage which is supplied to the portable electronic device to power functions thereof. | 2009-11-19 |
20090284216 | Portable and universal hybrid-charging apparatus for portable electronic devices - The teachings relate to a power supply that can be used to carry, charge, and power a portable electronic device, as well as be operable by a user while mobile, between or during uses of the portable electronic device. The power supply comprises a modular hybrid-charger assembly operably connected to a device holder. The modular hybrid-charger assembly comprises a rechargeable internal battery connected to a port operable to function as a tetherless connection to a portable electronic device, a power management engine embodied in a computer readable medium, and an untethered solar energy source. The device holder comprises a framework operable to receive, hold, and release the portable electronic device; and an alignment mechanism that facilitates a mating of the portable electronic device with the hybrid-charger assembly. The modular hybrid-charger assembly can comprise a form factor that is interchangeable and operable with each of several different device holder form factors. | 2009-11-19 |
20090284217 | SOLAR POWER CHARGING DEVICE WITH SELF-PROTECTION FUNCTION - A solar power charging device with a self-protection function is provided, which includes a solar cell, a rechargeable battery, and a diode. The solar cell defines an open-circuit voltage Voc and an operating voltage Vop, in which the Voc is slightly higher than the Vop. The rechargeable battery defines a battery voltage, an operating voltage of load Vload, and a maximum charging voltage Vf, in which the Vf is substantially equal to the V | 2009-11-19 |
20090284218 | METHOD AND APPARATUS FOR AN ENLARGED WIRELESS CHARGING AREA - Exemplary embodiments are directed to wireless power transfer including a plurality of antenna circuits spatially arranged and each including an antenna configured to resonate and generate a near field coupling mode region thereabout in response to a driving signal from a power amplifier. The apparatus further includes a processor configured to control activation of resonance of each of the plurality of antenna circuits. The method for wirelessly charging includes driving a signal from a power amplifier and controlling activation of resonance of a plurality of antenna circuits spatially arranged and each including an antenna configured to resonate in response to the driving signal. | 2009-11-19 |
20090284219 | Little Power House Emergency Power System - A back-up emergency power unit called the Little Power House Emergency Power System. The device provides unique features and combinations of features that are specifically used to charge a battery, retain power, then invert the stored power for use in the event of a power failure. The device | 2009-11-19 |
20090284220 | METHOD AND APPARATUS FOR ADAPTIVE TUNING OF WIRELESS POWER TRANSFER - Exemplary embodiments are directed to wireless power transfer. A transmit antenna generates an electromagnetic field at a resonant frequency of to create a coupling-mode region within a near field of the transmit antenna. A receive antenna receives the resonant frequency when it is within the coupling-mode region and resonates substantially near the resonant frequency. One, or both, of the transmit and receive antennas are tunable antennas that can be adaptively tuned. The adaptive tuning is accomplished by detecting a mismatch at the tunable antenna and generating a mismatch signal responsive to a voltage standing wave ratio at the tunable antenna. A resonance characteristic of the tunable antenna can be modified by adjusting a capacitance of a variable capacitor network connected to the tunable antenna. | 2009-11-19 |
20090284221 | PLUG STRUCTURE WITH ANGLE-ADJUSTING FUNCTION - A plug structure with angle-adjusting function includes a main body, an adjusting mechanism, a plurality of inserting elements and a power cord. The adjusting mechanism has a push button and a plurality of rotary elements. The push button is movably disposed in the main body, the rotary elements are rotatably received in the main body, the push button has a guiding groove, each rotary element has at least two axle portions, and the axle portions of the rotary element are received in the guiding groove. The inserting elements are respectively fixed on the rotary elements, and each inserting element has a front side exposed outside the main body. The power cord electrically connects to the inserting elements. Therefore, the two inserting elements can be selectably inserted into two types of socket by matching the push button of the adjusting mechanism and the special design of the rotary elements. | 2009-11-19 |
20090284222 | Docking Device - A docking device for receiving a portable computer is disclosed. The docking device includes a device housing and a charging connector that is provided on a side surface of the device housing and is connected to a battery connector of a battery pack in order to charge the battery pack. The charging connector is connectable to the battery connector in a state where the battery pack and the device housing are disposed on the same plane. When the charging connector and the battery connector are in a connected state and the device housing is being moved to a position within a predetermined height from the plane, the connection state between the charging connector and the battery connector is maintained. When the device housing is being moved to a position that exceeds the predetermined height from the plane, the battery connector will be separated from the charging connector due to the weight of the battery pack. | 2009-11-19 |
20090284223 | BATTERY APPARATUS FOR CONTROLLING PLURAL BATTERIES AND CONTROL METHOD OF PLURAL BATTERIES - Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices. | 2009-11-19 |
20090284224 | BATTERY APPARATUS FOR CONTROLLING PLURAL BATTERIES AND CONTROL METHOD OF PLURAL BATTERIES - Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices. | 2009-11-19 |
20090284225 | INFORMATION PROCESSING EQUIPMENT AND THE INTEGRATED CIRCUIT - Information processing equipment is provided that can be operated continuously and stably for a long time due to improved stability during alternately switching between the batteries being used and, therefore, can maintain the reliability of the operation of switching the batteries being used over a long period. The information processing equipment includes battery housing portions configured to individually house a plurality of batteries; battery lids that are provided corresponding respectively to the plurality of batteries, that are opened and closed independently during attachment or removal of the batteries, and that are provided with magnets serving as magnetic-field-generating portions; magnetic-field-detecting elements that detect the strength of a magnetic field from the magnetic-field-generating portions; and a control microcomputer that controls a power-drawing portion based on a detection result obtained by the magnetic-field-detecting elements so as to change the switch. | 2009-11-19 |
20090284226 | METHOD FOR EXCHANGING RECHARGEABLE BATTERIES - A rechargeable battery exchanging method which exchanges rechargeable batteries of an assembled battery to rebuild new assembled battery. The method includes discharging a rechargeable battery derived from an assembled battery until the rechargeable battery becomes a fully discharged state and storing the rechargeable battery in a storage region for a predetermined period of time or longer from when the rechargeable battery becomes the fully discharged state to prepare a reusable rechargeable battery. The method further includes rebuilding a regenerated assembled battery by combining the stored reusable rechargeable battery with a stored reusable rechargeable battery derived from other assembled batteries or combining the stored reusable rechargeable battery with a fresh rechargeable battery. | 2009-11-19 |
20090284227 | RECEIVE ANTENNA FOR WIRELESS POWER TRANSFER - Exemplary embodiments are directed to wireless power transfer to an electronic circuit including a wireless charging receive antenna comprising a first loop of an energy receiving conductor and at least another loop of said energy receiving conductor electrically coupled to the first loop. The loops form a multi-turn loop antenna to resonate at a wireless charging frequency and provide wirelessly received power to the electronic device. The multi-turn loop antenna is configured for affixing to a housing of the wireless device. | 2009-11-19 |
20090284228 | SYSTEM AND METHOD FOR PROVIDING HYBRID ENERGY ON A MARINE VESSEL - A system for providing rechargeable energy onboard a marine vessel, the system including an energy storage device aboard a marine vessel, an interface device connected to the energy storage device configured to provide power to charge the energy storage device and/or provide power from the energy storage device to the marine vessel, a converter device connected to the interface device configured to convert power to alternating current and/or direct current, depending on an intended purpose of the system, and a conditioning device connected to the converter device, interface device, and/or energy storage device, and configured to establish an acceptable power level and/or an acceptable power waveform. The energy storage device is configured to provide power to the marine vessel to reduce fuel used, emission output, and/or mechanical noise output. A method for providing rechargeable energy onboard a marine vessel is further disclosed. | 2009-11-19 |
20090284229 | Electrochemical cell, and particularly a cell with electrodeposited fuel - The present invention relates to a method for charging the cell by electrodeposition of metal fuel on the anode thereof. | 2009-11-19 |
20090284230 | BATTERY MODULE AND CHARGING MODULE - A thin and compact battery module capable of suppressing an increase in temperature of the battery in the battery module when the battery is charged. The battery module | 2009-11-19 |
20090284231 | Electric generating system with energy transfer device - This invention provides an electric generating system with energy transfer device for accumulating and transferring the compressed medium to produce driving force for generating electric power. Once the electric generator start generating electric power, the driving force can be transmitted simultaneously to a medium compressor to compress the medium in the pressure reservoir for accumulating pressure. The compressed medium can be released automatically and properly to push the fan wheel to rotate by a pressure release valve when the driving force of the electric generator is stopped so as to provide extra driving force to operate the electric generator continuously. | 2009-11-19 |
20090284232 | Method and system for selecting between centralized and distributed maximum power point tracking in an energy generating system - A method for selecting between centralized and distributed maximum power point tracking in energy generating system is provided. The energy generating system includes a plurality of energy generating devices, each of which is coupled to a corresponding local converter. Each local converter includes a local controller for the corresponding energy generating device. The method includes determining whether the energy generating devices are operating under quasi-ideal conditions. The energy generating system is placed in a centralized maximum power point tracking (CMPPT) mode when the energy generating devices are operating under quasi-ideal conditions and is placed in a distributed maximum power point tracking (DMPPT) mode when the energy generating devices are not operating under quasi-ideal conditions. | 2009-11-19 |
20090284233 | Quantized voltage feed-forward a power factor correction controller - A quantized voltage feed-forward (QVFF) circuit and integrated circuits using the same. The QVFF circuit includes a plurality of comparators in combination with a logic control circuit. The comparators are structured and arranged to establish various voltage threshold levels, each providing a digital state signal representative of the sensed input voltage level. The logic control circuit is structured and arranged to use the digital input signals from the comparators to output a voltage feed-forward factor (K | 2009-11-19 |
20090284234 | POWER DISTRIBUTION SYSTEM CONTROL AND MONITORING - In one example embodiment, a power control system includes one or more stages, a plurality of primary busbars operatively coupled to the one or more stages, and an intelligent controller operatively coupled to the one or more stages. Each of the one or more stages is configured to generate a lead current when coupled in parallel to a power distribution system, and at least one of the one or more stages comprises a notch filter and a power tank circuit. Each of the plurality of primary busbars is configured to carry one phase of a multiple phase power signal. The controller is configured to determine when to switch each of the one or more stages one and off, to count a number of times each stage is switched on, and to track one or more electrical parameters of the power distribution system, power control system, or both. | 2009-11-19 |
20090284235 | Adaptive Compensation Scheme for LC Circuits In Feedback Loops - A method for providing adaptive compensation for an electrical circuit where the electrical circuit includes an inductor-capacitor network connected in a feedback loop being compensated by a first compensation capacitance value and a second compensation capacitance value defining the frequency locations of two compensation zeros includes: measuring the inductance value of the inductor; when the inductance value is greater than a first threshold value, increasing the first and second compensation capacitance values so that the frequency locations of the two compensation zeros are adjusted for compensating the poles introduced by the first inductor and the first capacitor; and when the inductance value is less than the first threshold value, decreasing the first and second compensation capacitance values so that the frequency locations of the two compensation zeros are adjusted for compensating the poles introduced by the first inductor and the first capacitor. | 2009-11-19 |
20090284236 | CONSTANT CURRENT SOURCE APPARATUS - A constant current source apparatus is provided that includes a complementary switching section that selectively outputs a reference voltage or a driving voltage according to a control signal and a constant current source circuit that causes a constant current determined by the reference voltage to flow to a load in a case where the reference voltage is received from the complementary switching section and cuts off the current flowing to the load in a case where the driving voltage is received from the complementary switching section. The complementary switching section includes a first FET in which one of either a source or a drain is connected to the driving voltage, the other source or drain is connected to an output end of the complementary switching section, and a gate receives the voltage according to the control signal and a second FET that switches to an opposite polarity of the first FET in which one of either a source or a drain is connected to the reference voltage, the other source or drain is connected to the output end of the complementary switching section, and a gate receives the voltage according to the control signal. | 2009-11-19 |
20090284237 | POWER SUPPLY APPARATUS AND ELECTRICAL DEVICE THEREWITH - A direct-current stabilized power supply apparatus according to the present invention includes offsetting means that keeps a slope voltage (Vslp) shifted from the ground potential to a higher potential by a predetermined offset voltage ΔV so that the lower limit level of the slope voltage (Vslp) is higher than that of an error voltage (Verr). With this configuration, it is possible to provide a direct-current stabilized power supply apparatus that can appropriately control a duty ratio without causing oscillation or the like in the overall system, and also to provide an electrical device incorporating such a power supply apparatus. | 2009-11-19 |
20090284238 | Re-programmable modular power management circuit - An integrated circuit includes a buck converter controller, a PFET, an NFET that is coupled in common drain configuration to the PFET, a first microbump that is connected to the source of the PFET, a second microbump that is connected to the source of the NFET, a third microbump that is connected to the common drain node, a fourth microbump that is connected to a feedback input lead of the controller, and a plurality of other microbumps. | 2009-11-19 |
20090284239 | Quick response mechanism and method for a switching power system - A quick response mechanism for a switching power system includes a detector and an adjustor connected to the detector. The detector is configured to directly monitor the drop of the output voltage of the switching power system so that a quick response could be immediately triggered when a load transient occurs. The adjustor is configured to adjust the duration of the quick response, thereby preventing the output voltage from undershoot or ringback. | 2009-11-19 |
20090284240 | Method and system for providing local converters to provide maximum power point tracking in an energy generating system - A method for providing maximum power point tracking for an energy generating device using a local buck-boost converter coupled to the device is provided. The method includes operating in a tracking mode, which includes initializing a conversion ratio for the buck-boost converter based on a previous optimum conversion ratio. A device power associated with the initialized conversion ratio is calculated. The conversion ratio is repeatedly modified and a device power associated with each of the modified conversion ratios is calculated. A current optimum conversion ratio for the buck-boost converter is identified based on the calculated device powers. The current optimum conversion ratio corresponds to one of a buck mode, a boost mode and a buck-boost mode for the buck-boost converter. | 2009-11-19 |
20090284241 | SWITCHING POWER CONVERTERS WITH DIODE REVERSE CURRENT SUPPRESSION - A switching power converter includes an input terminal for receiving an input voltage, an output terminal for supplying an output voltage, a coupled choke having a main winding and an auxiliary winding, an output capacitor coupled to the output terminal, a main diode coupled between the auxiliary winding and the output terminal, and a switch having first and second positions. The main and auxiliary windings are connected to be charged by an input voltage when the input voltage is coupled to the input terminal and the switch is in the first position. The auxiliary winding is connected to reverse bias the main diode when the switch is switched from the first position to the second position to thereby suppress reverse recovery current in the main diode. The power converter may further include an auxiliary diode coupled between a common node of the main and auxiliary windings and the output terminal, as well as an inductor in series with the auxiliary diode. | 2009-11-19 |
20090284242 | System and Method for Generating a Reference Voltage - In one embodiment, a circuit having a chopper stabilized amplifier and a network coupled in feedback with the chopper stabilized amplifier is disclosed. The circuit also has a plurality of switches coupled to an output of the chopper stabilized amplifier, and a summing network coupled to the plurality of switches. Ones of the plurality of switches are coupled to ones of a plurality of the summing network inputs. | 2009-11-19 |
20090284243 | AUTO-NULLED BANDGAP REFERENCE SYSTEM AND STROBED BANDGAP REFERENCE CIRCUIT - An auto-nulled bandgap reference system employing a substrate bandgap reference circuit with primary and auxiliary amplifiers and a switching circuit which in a first mode develops a voltage to null the offset and noise errors of the auxiliary amplifier and then in the second mode uses the nulled auxiliary amplifier to develop a voltage to null the offset and noise errors of the primary amplifier; and a strobe circuit including an output storage device and a strobe control circuit for periodically powering up a bandgap reference circuit to charge the output storage device and powering down the bandgap reference circuit to conserve power. | 2009-11-19 |
20090284244 | SYSTEM FOR ACTUATING PORTABLE ELECTRONIC DEVICES - A system for actuating portable electronic devices includes a power supply circuit for providing an electric potential, a regulating circuit connected to the power supply circuit for regulating the electric potential provided by the power supply circuit, and an actuating circuit connected to the power supply circuit via the regulating circuit. The actuating circuit creating pulse signals to control the regulating circuit and the power supply circuit to create an actuating electric potential, which actuates portable electronic devices connected to the system. | 2009-11-19 |
20090284245 | WIRELESS POWER TRANSFER FOR APPLIANCES AND EQUIPMENTS - Exemplary embodiments are directed to wireless power transfer. A transmitting device or a receiving device for use in a wireless transfer system may be equipment or a household appliance. The transmitting device includes a transmit antenna to wirelessly transfer power to a receive antenna by generating a near field radiation within a coupling-mode region. An amplifier applies an RF signal to the transmit antenna. A presence detector detects a presence of a receiver device within the coupling-mode region. A controller adjusts a power output of the amplifier responsive to the presence of a receiver device. The presence detector may also detect a human presence. The power output may be adjusted at or below the regulatory level when the presence signal indicates human presence and above a regulatory level when the presence signal indicates human absence. | 2009-11-19 |
20090284246 | LOW DROPOUT REGULATOR TESTING SYSTEM AND DEVICE - A device for testing low dropout (LDO) regulator is disclosed. In one embodiment, a device for testing LDO regulators includes an absolute value measurement module for measuring absolute output voltages of the LDO regulators including a resistor scaling array for generating candidate voltages based on a first output voltage of the LDO regulators, a multiplexer for forwarding one of the candidate voltages selected by a binary search algorithm, and a comparator for generating a first test output by comparing the candidate voltage with an external reference voltage, and a DC load regulation measurement module for measuring corresponding DC regulation voltages of the LDO regulators including a switch for applying an internal test load to a second output voltage of the LDO regulators, and the comparator for generating a second test output by comparing a reference voltage with the second output voltage modified by the internal test load. | 2009-11-19 |
20090284247 | DIGITAL SIGNAL DELAY MEASURING CIRCUIT AND DIGITAL SIGNAL DELAY MEASURING METHOD - A digital signal delay measuring circuit for measuring a delay time of a digital signal of a scan-testable digital circuit inside a device to be tested is provided. | 2009-11-19 |
20090284248 | METHOD AND APPARATUS FOR HIGH CURRENT MEASUREMENT - In order to extend the measurement range of a current sensor, a current divider is formed by a first conductor formed in a current sensor that is mounted on a printed circuit board and a second conductor on the printed circuit board that electrically shorts at least one input terminal of the current sensor to at least one output terminal of the current sensor. The input terminal of the current sensor supplies the current to be measured to the first conductor and the output terminal supplies the measured current back to the printed circuit board. | 2009-11-19 |
20090284249 | Sensor, Method and System of Monitoring Transmission Lines - An apparatus, method, and system for measuring the magnetic field produced by phase conductors in multi-phase power lines. The magnetic field measurements are used to determine the current load on the conductors. The magnetic fields are sensed by coils placed sufficiently proximate the lines to measure the voltage induced in the coils by the field without touching the lines. The x and y components of the magnetic fields are used to calculate the conductor sag, and then the sag data, along with the field strength data, can be used to calculate the current load on the line and the phase of the current. The sag calculations of this invention are independent of line voltage and line current measurements. The system applies a computerized fitter routine to measured and sampled voltages on the coils to accurately determine the values of parameters associated with the overhead phase conductors. | 2009-11-19 |
20090284250 | Self calibrating current sensor - A self-calibrating current sensor for sensing the state of the current passing through a load line enclosed within a housing comprises a sensor disposed adjacent the load line for sensing a current passing through the load line, the sensor having an output at which a signal indicative of the level of current passing through the load line is present, the sensor being positioned with the housing, a binary input circuit configured to generate at least one binary signal, the binary input circuit being configured to change the level of the at least one binary signal without the need of opening the housing, and a controller circuit having a first input coupled to the output of the sensor for receiving the signal indicative of the level passing through the supply line and having a second input coupled to the binary input circuit for receiving the at least one binary signal, the controller being configured to provide a signal indicative of the status of the current in the load line on an output. A method of calibrating a current sensor is also provided. | 2009-11-19 |
20090284251 | MODULAR METER CONFIGURATION AND METHODOLOGY - A modular electricity meter configuration and corresponding methodology permits use of certain common components in combination with either a variety of mechanical displays or electronic displays. In electricity meter arrangements making use of printed circuit board or solid state technology, at least two separate electronics boards may be provided. One may constitute a standard board for basic metrology functions while the other may comprise selected implementation of various higher level functions for creating a custom design electricity meter to meet customer requirements. Different customers may be provided with differently outfitted meters by corresponding customization of the higher level function board. A unitary power supply may be provided for both boards through a fixed connector. A common baseplate includes a circuitry link through a nonremovable plug or clip for alternatively providing a tamper proof embodiment or one with exposed terminals for permitting customer testing. Physical stability and strength is provided by using tapered mounting posts and integrated snap fit arrangements without requiring any screws for assembly. A light pipe provides external output through an innercover to indicate correct meter operation. Meter data and other metered information may be output through different configurations optionally involving hardwired output, RF links, pulse outputs, and telephone connections via modem or wireless. | 2009-11-19 |
20090284252 | Device for measuring the absolute position of at least two members that are movable or rotatable relative to each other - The objective is to provide a measuring device, which makes it possible to determine the absolute position (s) of a movable member comprising a permanent magnetic encoder ( | 2009-11-19 |
20090284253 | SENSOR DEVICE FOR AN ELECTRIC MACHINE - The aim of the invention is to create an inexpensive sensor system for a movable electric machine in order to determine positions, the sensor signal featuring zero crossings. Said aim is achieved by a sensor device ( | 2009-11-19 |
20090284254 | Magnetic sensor - A magnetic sensor capable of detecting a magnetic field with high sensitivity is provided. The magnetic sensor includes a bridge circuit having a plurality of magneto resistive effect elements connected with each other, and is capable of detecting a differential voltage between predetermined connecting points. The magneto resistive effect elements output resistance values which vary in accordance with a direction of a magnetic field to be input, and are arranged such that fixed magnetization directions of all magneto resistive effect elements are in the same direction. Further, a magnetic body which changes the direction of the magnetic field to be input to the magneto resistive effect elements is also provided in the vicinity of the bridge circuit. | 2009-11-19 |
20090284255 | Magnetic Interference Detection System And Method - A system and method for tracking an object through a three dimensional space is provided that uses the generation and detection of various magnetic fields to provide three-dimensional location data. The integrity of the generated magnetic fields are monitored against a baseline in order to detect compromise by the unintentional introduction of a foreign metallic or magnetic object in the procedural space. | 2009-11-19 |
20090284256 | SENSOR - The invention relates to a magnetoresistive sensor with a triangle made of magnetic sensitive material with three corners with two wiring connections, wherein the three sides of the triangle have different or at least substantially equal length. | 2009-11-19 |
20090284257 | Motion corrected tensor magnetic resonance imaging - In tensor MRI, a set of k-space MRI data points is acquired that includes one or more k-space subsets of MRI data points. An object orientation (or spatial transformation) corresponding to each of the k-space subsets is determined. Because the object orientation (or spatial transformation) can differ from subset to subset, the overall set of k-space data can be inconsistent with respect to object orientation (or spatial transformation). This possible inconsistency can be addressed by providing a k-space tensor model that includes object orientation and/or spatial transformation information corresponding to each of the subsets. A tensor MRI image can be reconstructed from the set of k-space MRI data points by using the k-space tensor model to account for object orientation and/or spatial transformation. | 2009-11-19 |
20090284258 | AIRBORNE GEOPHYSICAL SURVEY USING AIRSHIP - A method and system for geophysical surveying. A non-rigid airship having a self-supporting gas envelope and propulsion units coupled to the gas envelope, the propulsion units being configured to control the steering and altitude of the airship without the aid of a rudder or elevators, is provided with geophysical survey equipment, and geophysical data is collected while flying the airship. Also a method for geophysical surveying that includes providing a first airship with a first set of geophysical survey equipment, providing a second airship with a second set of geophysical survey equipment that is complimentary to the first set, and conducting an airborne geophysical survey by flying the first airship and the second airship along a designated flight path within a predetermined range of each other. | 2009-11-19 |
20090284259 | METHOD AND APPARATUS FOR DOWNHOLE SPECTROSCOPY - Apparatus and method for estimating a property of a downhole fluid including a carrier that is conveyed in a borehole, and a semiconductor electromagnetic energy source carried by the carrier, the semiconductor electromagnetic energy source having an active region that includes one or more nitride-based barrier layers that are modulation-doped using a nitride-based doped layer. | 2009-11-19 |
20090284260 | SYSTEMS, METHODS AND APPARATUSES FOR MONITORING AND RECOVERY OF PETROLEUM FROM EARTH FORMATIONS - An apparatus for monitoring a location of a borehole for production of petroleum from an earth formation is provided. The apparatus includes: a detection source disposable within a detection source conduit, the detection source including an elongated electrically conductive member extendable along at least a portion of the detection source conduit; and an electrosensitive material disposed in at least one portion of the elongated member, the electrosensitive material reactive to an electric current to change a shape of the electrosensitive material, the electrosensitive material configured to change shape in response to the electric current to form an electromagnet at the portion. A system and method for monitoring a location of a borehole for production of petroleum from an earth formation are also provided. | 2009-11-19 |
20090284261 | Lamp With Metering Device - A lamp includes a generator that generates electricity. A battery stores the generated electricity. A light source produces light from the stored electricity. A metering device tallies an operating parameter indicative of the amount of electrical energy consumed by the lamp. | 2009-11-19 |
20090284262 | AUTOMATED LIQUID CRYSTAL ANALYSIS INSTRUMENT - Provided is a method for measuring one or more properties of liquid crystals in an automated manner. Also provided is a liquid crystal analysis instrument (LCAS) that automatically measures one or more properties of liquid crystals. | 2009-11-19 |
20090284263 | FULL FUNCTION TEST FOR IN SITU TEST OF SENSORS AND AMPLIFIERS - The present invention provides a method and an apparatus for in situ test of transducers comprising sensing elements and associated conditioning preamplifiers. The invention makes it possible to evaluate the characteristics of the complete transducer by means of higher integration of the transducer circuitry. Tests can be performed from a remote central location without additional wiring and while the transducer is in operating environment. Testing is performed by superposing test signals and test sequence control signals on the wiring for the transducer output signal, hereby offering flexibility without sacrificing simplicity. Test signalling is by additional circuitry in the transducer interpreted and routed to the input of the conditioning preamplifier based on signalling from the remote test generator, and the signals engendered from the test signals can be analyzed from a remote analyzing system for complete qualifications of the transducer under test. | 2009-11-19 |
20090284264 | LOCATING A LOW-RESISTANCE FAULT IN AN ELECTRICAL CABLE - An inductance-based cable length-to-fault measurement device and method are described. The cable under test having a per-unit-length inductance is coupled to an inductance-sensitive oscillator, and the frequency of oscillations is evaluated using the following serially coupled modules: a comparator for digitizing the oscillator output, a pre-scaler for oscillation frequency down-conversion, and a microprocessor for counting pulses from the pre-scaler. To remove environmental and manufacturing tolerance dependencies, as well as a battery voltage dependence, the measured frequency of oscillations is compared to a frequency of oscillations of the oscillator having coupled thereto a reference inductor. | 2009-11-19 |
20090284265 | ARC DETECTING DEVICE AND AIRCRAFT EQUIPPED THEREWITH - An arc detecting device includes: a detector for acquiring time series data concerning a characteristic quantity, such as a voltage or a current in a circuit, targeted for detecting an arc; a basic data generator for generating basic data made of a plurality of frequency components, through frequency analysis from the acquired time series data; a data processor for statistically processing the generated basic data, thereby converting the basic data to an evaluation value highly correlative to an occurrence of the arc; and an arc judging unit for judging the occurrence of the arc, if the evaluation value exceeds a predetermined arc judgment threshold value. In this manner, the arc detecting device that is capable of effectively detecting the arc in a direct-current power supply circuit is provided. | 2009-11-19 |
20090284266 | Test method and device for land grid array components - A test method for Land Grid Array components includes the steps of: providing a test board with a plurality of test points; providing a secondary test board which has a plurality of conductors extending therethrough from a top surface to a bottom surface and forms a drop thereon, placing the secondary test board on the test board and contacting the conductors with the test points correspondingly; disposing a conducting spacer on the secondary test board, which is contacted with the conductors of the secondary test board correspondingly; and placing a test object on the conducting spacer, which has a plurality of conducting terminals contacted with the conducting spacer, and pressing the test object downwards so that the conducting terminals, the conducting spacer, the conductors and the test points are electrically connected for testing the test object. A test device for Land Grid Array components also is provided. | 2009-11-19 |
20090284267 | INTEGRATED CIRCUIT HAVING ELECTRICALLY ISOLATABLE TEST CIRCUITRY - Special test circuitry in an IC for wafer level testing selectively connects the specialized test circuitry to the functional circuitry during wafer test. Following wafer test the special test circuitry is electrically isolated from the functional circuitry and power supplies such that it does not load functional circuit signals nor consume power. | 2009-11-19 |
20090284268 | SLOT INTERPOSER PROBE - The slot interposer probe consists of a board with a male edge connector and a female edge connector connected to its opposed edges and circuitry electrically connecting the male edge connector to the female edge connector. The female edge connector may be a straddle-mount connector. The board may have an inner layer sandwiched between two outer layers. There may be a probe having a high-speed buffer connected to a plurality of capacitors, isolation resistors, and vias that intercepts signals carried by transmission lines on the inner layer. The vias may have a length equal to the inner layer's width. The high-speed buffer receives intercepted signals from the vias, copies and amplifies the signals, and drives them through coaxial cables to an acquisition module. The invention also includes a method of intercepting signals between a first electrical device and a second electrical device. | 2009-11-19 |
20090284269 | Apparatus for ascertaining and/or monitoring a process variable - The invention relates to an apparatus for ascertaining and/or monitoring a process variable. The apparatus includes a sensor element ( | 2009-11-19 |
20090284270 | METHOD OF DETERMINING CONTACT POSITION IN ELECTRONIC APPARATUS - There is provided a method of determining a contact position in an electronic apparatus including a plurality of capacitance sensing circuits that measures changes in capacitance and outputs capacitance measuring signals and a plurality of light sensing circuits that measures light intensities of incident light and outputs light measuring signals. The method includes acquiring the capacitance measuring signals by sequentially scanning the plurality of capacitance sensing circuits, determining whether a target object is in contact with a contact surface based on the acquired capacitance measuring signals, acquiring the light measuring signals by sequentially scanning the plurality of light sensing circuits after the target object is determined to be in contact with the contact surface in the determining of whether the target object is in contact with the contact surface, and determining a position of the contact surface, with which the target object is in contact, based on the acquired light measuring signals. The acquiring of the capacitance measuring signals and the determining of whether the target object is in contact with the contact surface are repeated until the target object is determined to be in contact with the contact surface in the determining of whether the target object is in contact with the contact surface. | 2009-11-19 |
20090284271 | INSTRUMENT FOR MEASURING CONCENTRATION OF PARTICULATES IN FLUID, MEASURING METHOD, AND MEASURING PROGRAM - There are disclosed an instrument for measuring the concentration of particulates in a fluid, which is capable of determining the concentration of the particulates in the fluid with high accuracy. The instrument for measuring the concentration of the particulates in the fluid includes particulate collecting means, temperature measuring means, flow rate measuring means, impedance measuring means, time measuring means, constant determining means for determining an impedance change per unit time-particulate concentration constant from temperature and flow rate, impedance change per unit time computing means for computing the change of an impedance per unit time, and particulate concentration determining means for determining the concentration of the particulates from the change of the impedance per unit time computed by the impedance change per unit time computing means. | 2009-11-19 |
20090284272 | PROBE DEVICE AND METHOD OF REGULATING CONTACT PRESSURE BETWEEN OBJECT TO BE INSPECTED AND PROBE - Contact pressure between a wafer and a probe is maintained at an appropriate level. A probe card | 2009-11-19 |
20090284273 | METHOD FOR ASSEMBLING ELECTRICAL CONNECTING APPARATUS - A method for assembling an electrical connecting apparatus having a support member, a probe board, and spacers arranged between the support member and the probe board. A height of at least either each abutting part of the support member or each abutting part of the probe board facing the abutting part is measured, and a length of each of the plurality of spacers is measured. Based on measurement values obtained by these measurements, a spacer appropriate for maintaining tips of numerous probes provided on the probe board on the same plane is selected for each pair of the both abutting parts. | 2009-11-19 |
20090284274 | Full-Wafer Test And Burn-In Mechanism - Assemblies include a substrate, such as a printed circuit board, with a first array of contact pads disposed thereon; a guide ring structure disposed on the substrate and at least partially surrounding the first array of contact pads; a translator socket disposed on the first array of contact pads, the translator socket adapted to receive the tester side of a translated wafer; a thermally conductive, conformal, heat spreading cushion adapted to be disposed over the backside of a wafer; a cover plate adapted to fit over the first array of contact pads, align with the guide ring structure, contain within it the various components disposed over the first array of contact pads, and removably attach to the substrate; and a bolster plate adapted to removably attach to a second side of the substrate. In a further aspect a translated wafer is disposed over the translator socket such that the tester side of the translator is in contact with the translator socket; and the heat spreading cushion is disposed over the backside of the translated wafer. In a still further aspect, the substrate includes signal communication means, such as but not limited to, an edge connector adapted to couple to various controller circuits, which are typically disposed on a printed circuit board. | 2009-11-19 |
20090284275 | CONDUCTIVE FILM STRUCTURE, FABRICATION METHOD THEREOF, AND CONDUCTIVE FILM TYPE PROBE DEVICE FOR IC - A method for forming a conductive film structure is provided, which includes providing a flexible insulating substrate, forming a conductive film overlying the flexible insulating substrate, patterning the conductive film to form a plurality of micro-wires overlying the flexible insulating substrate, wherein the micro-wires are extended substantially parallel to each other, forming an insulating layer overlying the flexible insulating substrate and the micro-wires, and winding or folding the flexible insulating substrate along an axis substantially parallel to an extending direction of the micro-wires to form a conducting lump. | 2009-11-19 |
20090284276 | PROBE CARD - A probe card is disclosed that includes a board having a first surface and a second surface facing away from each other and a through hole formed between the first and second surfaces; and a probe needle having a penetration part and a support part. The penetration part is placed in the through hole without contacting the board and projects from the first and second surfaces of the board. The support part is integrated with a first one of the end portions of the penetration part and connected to one of the first and second surfaces of the board. The support part has a spring characteristic. The penetration part is configured to have a second one of its end portions come into contact with an electrode pad of a semiconductor chip at the time of conducting an electrical test on the semiconductor chip. | 2009-11-19 |
20090284277 | PROBE APPARATUS AND METHOD FOR CORRECTING CONTACT POSITION - A probe apparatus includes a movable mounting table for supporting an object to be tested; a probe card disposed above the mounting table and having a plurality of probes to come into contact with electrodes of the object; a support body for supporting the probe card; and a control unit for controlling the mounting table. Electrical characteristics of the object are tested based on a signal from a tester by bringing the object and the probes into electrical contact with each other by overdriving the mounting table in a state where a test head is electrically connected with the probe card by a predetermined load. Further, one or more distance measuring devices for measuring a current overdriving amount of the mounting table are provided at one or more locations of the test head or the probe card. | 2009-11-19 |
20090284278 | DISPLAY DEVICE AND ELECTRONIC APPARATUS HAVING THE DISPLAY DEVICE - To provide a display device having a test circuit with high accuracy for testing in the step after a counter substrate is attached and before shipping, and to provide a display device having a correction circuit inside the display device, for the case where a defect occurs. A pixel circuit operated by a gate line and a source line, a first wiring formed at the same time as the gate line, a second wiring formed at the same time as the source line, and a test circuit of detecting a defect of the pixel circuit by using potentials of the first wiring and the second wiring are provided over a substrate. | 2009-11-19 |
20090284279 | Integrated Circuit Having Inverse Bit Storage Test - An integrated circuit is provided having a memory storing first and second strings of bit values, each bit value in the second string being the logical inverse of a bit value at a corresponding bit position in the first string, and a processor configured to test whether the bit values of the second string are the inverse of the bit values at respective corresponding bit positions of the first string by combining the corresponding bits of the first and second strings. | 2009-11-19 |
20090284280 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE - A semiconductor integrated circuit device comprises a transistor circuit exhibiting inductance at a desired frequency owing to capacitance between electrodes in a MOS transistor, the transistor circuit having an impedance that increases with an increase in frequency; and a first MOS transistor that functions as a source follower having the transistor circuit as a load. | 2009-11-19 |
20090284281 | MEMORY-MODULE BUFFER WITH ON-DIE TERMINATION - In memory module having multiple data inputs to couple to signal lines of an external data path, multiple memory integrated-circuits (ICs) and a buffer IC, the buffer IC includes respective interfaces coupled to the data inputs and the memory ICs, a first termination circuit having a first load element and a first switch element to switchably couple the first load element to a first data input of the data inputs and a second termination circuit having a second load element and a second switch element to switchably couple the second load element to the first data input. The buffer IC further includes a configuration circuit to store, in response to control information from a memory controller, a first digital value and a second digital value, the first digital value being supplied to the first termination circuit to control an impedance of the first load element and the second digital value being supplied to the second termination circuit to control an impedance of the second load element. | 2009-11-19 |
20090284282 | LEVEL SHIFTER - Input transistors have sources which are connected to a first input reference node and gates to which a pair of input signals are input. Input-side voltage relaxing transistors have sources connected to drains of the pair of input transistors and gates connected to a second input reference node. Output-side voltage relaxing transistors have sources connected to output nodes, gates connected to a first output reference node, and drains connected to drains of the input-side voltage relaxing transistors. First and second inverter circuits are in correspondence with the output nodes, and are connected between second and third output reference nodes. Each of the first and second inverter circuits also supplies a voltage at one of the second and third output reference nodes to its corresponding one of the output nodes, depending on a voltage at its non-corresponding one of the output nodes. | 2009-11-19 |
20090284283 | RATIO ASYMMETRIC INVERTERS, AND APPARATUS INCLUDING ONE OR MORE RATIO ASYMMETRIC INVERTERS - A ratio asymmetric inverter has a signal input, signal output, first and second power inputs, pullup and pulldown transistors, and at least one delay element. The pullup transistor has a gate terminal, a source terminal coupled to the first power input, and a drain terminal coupled to the signal output. The pulldown transistor has a gate terminal, a drain terminal coupled to the signal output, and a source terminal coupled to the second power input. The signal input is respectively coupled to the gate terminals of the pullup transistor and the pulldown transistor via first and second signal paths. The at least one delay element is included in only one of the first and second signal paths, to impart a longer propagation delay to the one of the first and second signal paths. | 2009-11-19 |
20090284284 | Sense Amplifier and Electronic Apparatus Using the Same - A sense amplifier according to the present invention for detecting a potential difference of signals input to a first input terminal and a second input terminal, includes a first means for applying voltages corresponding to threshold voltages of first and second transistors to gate-source voltages of the first and second transistors, and a second means for transferring signals input to the first and second input terminals to gates of the first and second transistors. In this case, a threshold variation of the first and second transistors is corrected. | 2009-11-19 |
20090284285 | SWITCHED-CAPACITOR DECIMATOR - A switched-capacitor decimator that can attenuate undesired signal components at odd harmonics of an output sample rate is described. In one design, the switched-capacitor decimator includes at least one sampling capacitor and multiple switches. For each sampling capacitor, the top plate is charged with a first input signal when the capacitor is selected for top charging, and the bottom plate is charged with a second input signal when the capacitor is selected for bottom charging. For each sampling capacitor, the top plate provides its stored charges to a first output signal and the bottom plate provides its stored charges to a second output signal when the capacitor is selected for reading. The switches couple the at least one sampling capacitor to the first and second input signals for charging and to the first and second output signals for reading. | 2009-11-19 |
20090284286 | Alias-locked loop frequency synthesizer using a regenerative sampling latch - A frequency synthesis phase-locked loop architecture using a regenerative sampling latch is described. The frequency divider typically employed in the feedback path of a frequency synthesis phase-locked loop is replaced by a regenerative sampling latch with a binary output. The regenerative sampling latch subsamples the frequency synthesizer output to produce a low-frequency aliased signal that can be processed further or directly used to lock the phase-locked loop. This architecture is referred to as an alias-locked loop. The relaxed constraints on the regenerative sampling latch make it possible to create high-speed frequency synthesizer phase-locked loops without the suffering the limitations imposed by traditional dividers connected directly to the oscillator output. | 2009-11-19 |
20090284287 | Output buffer circuit and integrated circuit - Disclosed herein is an output buffer circuit including: a power supply; an output circuit having a first field-effect transistor and a second field-effect transistor; an output control circuit; a substrate-voltage control circuit; a gate-voltage control circuit; and a signal supplying section. | 2009-11-19 |
20090284288 | HIGH-SPEED LOW-POWER LATCHES - A high-speed low-power latch includes three sets of transistors. A first set of transistors selects a tracking mode or a holding mode for the latch based on a clock signal having non-rail-to-rail or rail-to-rail voltage swing. A second set of transistors captures a data value based on an input signal and provides an output signal during the tracking mode. A third set of transistors stores the data value and provides the output signal during the holding mode. The input and output signals have rail-to-rail voltage swing. In another aspect, a signal generator includes at least one latch and a control circuit. The latch(es) receive a clock signal and generate an output signal. The control circuit senses a duty cycle of a feedback signal derived from the output signal and generates a control signal to adjust operation of the latch(es) to obtain 50% duty cycle for the feedback signal. | 2009-11-19 |
20090284289 | METHOD OF IMPLEMENTING POWER-ON-RESET IN POWER SWITCHES - A power switch circuit and method is provided for having the capability of (1) a power switch circuit having a POR in which the switch is enabled at a predetermined voltage such that the switch is unable to be activated when a minimum lower input voltage is not achieved, to avoid potential conflicts in synchronization and resets with other integrated circuits or chips of an affected system; (2) a POR designed with a delay circuit providing for coordinated stabilization of the power switch before each ON-OFF transition period,; (3) using a controlled peaking current in the POR circuit to provide precise RC delay to avoid instability during transition; and (4) a POR providing an externally controlled voltage to power-up other components in the system when energizing of the first component occurs satisfactorily. | 2009-11-19 |
20090284290 | DLL CIRCUIT ADAPTED TO SEMICONDUCTOR DEVICE - A DLL circuit is designed to adjust the delay time and the duty applied to an input clock signal, thus producing a DLL clock signal. In a non-clocking state of the DLL clock signal in which pulses disappear temporarily, the DLL circuit stops updating the delay time and the duty of the DLL clock signal. That is, the DLL circuit is capable of preventing a phase difference between the input clock signal and the DLL clock signal from being erroneously detected in the non-clocking state of the DLL clock signal, thus preventing the delay time and the duty from being updated based on the erroneously detected phase difference. Thus, it is possible to reduce the number of cycles adapted to the delay-locked control and to thereby stabilize the operation of the DLL circuit. | 2009-11-19 |
20090284291 | COMPLEMENTARY SIGNAL GENERATION CIRCUIT AND SEMICONDUCTOR DEVICE COMPRISING SAME - A complementary signal generation circuit includes a first transmission path including a first number N of inverters and a second transmission path including a second number (N−1) of inverters. A delay circuit composed of a first resistance element and a capacity element is arranged in series between two inverters in the second transmission path so as to correspond to any one of the inverters in the first transmission path. The capacity element is formed by a capacitive inverter having the same input capacity ratio as the any one of the inverters. The complementary signal generation circuit generates output signals having the logic levels which are complementary to each other through the first and second transmission paths. | 2009-11-19 |
20090284292 | SIGNAL ADJUSTMENT RECEIVER CIRCUITRY - Systems and methods for adjusting a signal received from a communication path are disclosed. A receiver can receive a signal from a communication path which attenuates at least some frequency components of the signal. The receiver can include an equalization block that adjusts at least some of the frequency content of the received signal, a signal normalization block that provides a normalized signal amplitude and/or a normalized edge slope, and a control block. In one embodiment, the control block controls frequency adjustment in the equalization block for high frequencies but not for low frequencies. For low frequency adjustment, the control block controls the normalized signal amplitude in the signal normalization block. In this manner, controlled adjustment for low frequency content is performed in the signal normalization block. | 2009-11-19 |
20090284293 | DUTY CORRECTION CIRCUIT - A duty correction circuit includes a duty ratio sensor for controlling a duty ratio sensing speed by a sensing speed control signal and outputting a correction signal by sensing a duty ratio of a clock, and a duty ratio corrector for controlling the duty ratio of the clock in response to the correction signal. | 2009-11-19 |
20090284294 | CROSS-CORRELATION OF SIGNALS USING EVENT-BASED SAMPLING - A sub-circuit for facilitating the synchronization of event-based samples of signals in a cross-correlation circuit utilizing event-based sampling is provided. The sub-circuit alternatively integrates one of the signals to be cross-correlated and alternates between the signals in response to the output of a hysteretic comparator. The invention extends to a method of manipulating the input signals to a cross-correlation circuit utilizing event-based sampling so-as to facilitate the synchronization of the event-based samples of the signals. | 2009-11-19 |
20090284295 | Timer for Low-Power and High-Resolution - The present invention is an electronic device comprising a counter driven by an input clock signal for counting clock cycles and providing a count. A clock signal generating stage provides a first set of phase shifted clock signals having m different phases. The electronic device determines n least significant bits of the count of the counter from the logic states of the first set of m phase shifted clock signals. | 2009-11-19 |
20090284296 | SELECTABLE DELAY PULSE GENERATOR - A programmable pulse generator having a clock signal delay chain, multiplexer, and reduced voltage charge circuit. The clock delay chain comprises a plurality of propagated delays, coupled to the multiplexer. The multiplexer selects a particular clock delay signal from a plurality of delay chain taps. The multiplexer is driven by a tap select register coupled to a state machine. The state machine controls the programmable pulse output, encoding the data by varying the pulse width and delay between pulses. The delay of pulse outputs from the multiplexer are reduced by coupling a reduced voltage pre-charge circuit to the multiplexer. | 2009-11-19 |
20090284297 | CLOCK GENERATION CIRCUIT - A multiphase clock generation circuit ( | 2009-11-19 |