13th week of 2011 patent applcation highlights part 15 |
Patent application number | Title | Published |
20110074318 | DUAL DRIVE ELECTRIC REGENERATOR - The dual drive electric regenerator (DDER), an electric power regenerative device in which a heavy driven-backend flywheel combination being coupled directly to the drive shafts of a specially designed electric generator with dual drives. The driven flywheel with magnetic Pole pieces attached to its circumference area being rotated by the magnetic forces imparted from a driver flywheel with magnetic Pole pieces attached to its circumference surface and rotated by an electric driver motor with its speed being controlled electronically. The DDER expends less input power than the output power generated by the flywheel combination and converted to electrical power by the said generator. The initial power to start the motor being derived from an internal battery. A part of the output power generated being used as the input power through recharging the battery continually and the rotational process being sustained by completing a power regenerative cycle. | 2011-03-31 |
20110074319 | DEVICE FOR CONTROLLING REGENERATION ENERGY IN AN ELECTRONIC MOTOR DRIVE HAVING AN LC FILTER TO REDUCE CONDUCTED EMISSIONS FROM THE MOTOR BACK TO THE VOLTAGE SOURCE - The present invention provides a unique improvement ( | 2011-03-31 |
20110074320 | CONTROL DEVICE FOR ELECTRIC MOTOR DRIVE DEVICE - A control device that controls an electric motor drive device. The control device is configured with a first voltage control section that derives a modulation rate representing a ratio of an effective value of the voltage command values to the DC voltage and a voltage command phase. A second voltage control section generates a control signal for controlling the DC/AC conversion section on the basis of the modulation rate, the voltage command phase, and a magnetic pole position representing a rotational angle of a rotator of the AC electric motor. A computation cycle of the first voltage control section is set to be longer than a computation cycle of the second voltage control section. | 2011-03-31 |
20110074321 | MOTOR DRIVE CONTROL CIRCUIT - A differential amplifier detects a coil current Is at the time of steady rotation of a synchronous motor. An application voltage S | 2011-03-31 |
20110074322 | APPARATUS AND METHOD FOR DETECTING LOCK ERROR IN SENSORLESS MOTOR - An apparatus and a method for detecting a lock error in a sensorless motor are disclosed, where the apparatus includes a multiplexer, a negative booster, a comparator and a timer. The multiplexer can receive a coil voltage from the sensorless motor. The negative booster can receive a neutralizing voltage from the sensorless motor and drop the neutralizing voltage. The comparator can compare the coil voltage with the dropped neutralizing voltage for outputting a zero-crossing signal. The timer can count time duration during the zero-crossing signal maintained at the a logic level and determine the lock error in the sensorless motor when the time duration exceeds a predetermined period. | 2011-03-31 |
20110074323 | MULTI-PHASE ROTARY MACHINE CONTROL APPARATUS AND ELECTRIC POWER STEERING SYSTEM USING THE SAME - A failure identification part identifies a switching element pair having off-failure, in which a FET of the switching element pair in a first inverter part is disabled to turn on. A failure-time control part controls other switching element pairs and of the first inverter part based on failure-time phase current command values calculated as a function of a rotation position and a q-axis current command value. The failure-time control part controls a second inverter part normally. A motor is persistently driven with the minimum reduction in motor torque, even when the FET fails. | 2011-03-31 |
20110074324 | Control Device for Synchronous Motor - A control technology for a synchronous motor for suppressing rotational pulsation caused by variation in individuals without making a control algorithm complex is provided. In a motor drive system which is a control device for a synchronous motor, in order to suppress the pulsation component of N times as high as the AC frequency for driving the synchronous motor, a controller in which the phase property of the disturbance response of the controller with respect to the pulsation frequency is within ±45° is arranged. Therefore, the torque pulsation component generated from distortion in induction voltage or variation between phases is suppressed. | 2011-03-31 |
20110074325 | Electronic Commutator Circuits - The present invention provides an electronic commutator circuit for use with a stator winding of an electrical machine. The stator winding of the electrical machine includes a number of coils linked by the same number of points of common coupling. The electronic commutator circuit comprising the same number of switching stages, each switching stage being connected between a respective one of the points of common coupling and first and second dc terminals. Each switching stage further includes a first reverse blocking semiconductor power device (such as a Reverse Blocking Gate Turn Off Thyristor (RB-GTO | 2011-03-31 |
20110074326 | ELECTRICAL MOTOR/GENERATOR DRIVE APPARATUS AND METHOD - The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and thus the volume and cost of a capacitor. The drive methodology is based on a segmented drive system that does not add switches or passive components but involves reconfiguring inverter switches and motor stator winding connections in a way that allows the formation of multiple, independent drive units and the use of simple alternated switching and optimized Pulse Width Modulation (PWM) schemes to eliminate or significantly reduce the capacitor ripple current. | 2011-03-31 |
20110074327 | CONTROL OF SINUSOIDALLY DRIVEN BRUSHLESS DC (BLDC) MOTORS - In response to the determination or estimation of a back EMF zero crossing event for the phase, a time T | 2011-03-31 |
20110074328 | System and Method for Detecting a High Current Condition in a Motor - In one embodiment, a system for controlling a motor is disclosed. The system has a driver circuit configured to drive a motor, a current sensing impedance coupled to the driver circuit, and an overload detection circuit coupled to the current sending impedance that has a transistor and a detection output node. | 2011-03-31 |
20110074329 | ELECTRIC MOTOR CONTROL APPARATUS - In an electric motor control apparatus, an electric motor driving unit includes: a current detection unit configured to detect a current flowing through a current detection place in the electric motor driving unit. A control unit includes a current calculation unit configured to calculate a current value of a current flowing through an electric motor from an offset correction value obtained based on a first detection value detected at a time when a current flows through the current detection place and a second detection value detected at a time when a current does not flow through the current detection place. The offset correction value includes: a first offset correction value stored in nonvolatile memory of the control unit at a time of assembling the electric motor control apparatus; and a second offset correction value computed by the control unit while the electric motor is driven. | 2011-03-31 |
20110074330 | AUTO-TUNE OF A CONTROL SYSTEM BASED ON FREQUENCY RESPONSE - A method and system of determining tuning parameters for use in tuning a controller used in a process control loop for a motor and associated load. The method includes providing tuning parameters, applying an excitation test signal, receiving frequency response data to determine phase and gain margins, creating an instability region defined by a bounded area that connects the phase and gain margins with a boundary on a gain vs. phase plot, assigning and applying cost functions, and computing stability determinations. | 2011-03-31 |
20110074331 | Movable Barrier Operator with Energy Management Control and Corresponding Method - A movable barrier operator system wherein one or more of the various components of the system is configured to operate selectively in at least either of two operational modes. Each operating mode is characterized by a corresponding energy usage profile. The operational status of the system is monitored and operating modes are selected that serve both to substantially ensure proper operation given current likely operational expectations and an overall desire to reduce energy consumption. | 2011-03-31 |
20110074332 | METHODS AND SYSTEMS FOR ELIMINATING STRUCTURAL MODES IN A SERVO MECHANISM EMPLOYED TO CONTROL A FLEXIBLE STRUCTURE - A servo system is provided for controlling movement of a flexible structure having multiple masses and elements. Each element couples a respective two of the masses and functions as a spring when the flexible structure is subject to a linear or rotational input at or above a frequency at which the respective element exhibits flexure. The servo system includes multiple sensors, where each sensor is disposed relative to a respective one of the masses to sense a respective acceleration. A motor having a torque input may operatively be configured to output one of a linear or rotational force on the first mass based on a torque signal present on the torque input. A servo controller that receives each sensed acceleration from each sensor may generate a compensation feedback signal based on a sum of sensed accelerations. The torque signal may be output to the motor based on the compensation feedback signal. | 2011-03-31 |
20110074333 | CONTROL APPARATUS FOR MULTI-PHASE ROTARY MACHINE AND ELECTRIC POWER STEERING SYSTEM - A control apparatus for a multi-phase rotary machine includes a control unit and a plurality of power supply systems including respective inverter units. When a short-circuiting failure occurs in one of the systems due to an ON-failure in any one of FETs in an inverter unit of the failure system, the control unit stops driving of the rotary machine by bringing all the FETs in the failure system into the OFF state. The control unit controls FETs of the non-failure system such that a brake torque generated in the failure system is cancelled or the influence of the brake torque exerted on the driving of the motor is reduced. | 2011-03-31 |
20110074334 | POWER-SAVING SOLAR POWER SUPPLY SYSTEM FOR AUTOMATIC VENDING MACHINE - A power-saving solar power supply system used in an automatic vending machine is disclosed to include a power supply module having a solar cell set and a rechargeable battery set, and a power management unit, which comprises a microprocessor, a voltage detection device that detects the voltage level of the solar cell set and the rechargeable battery set, an idle power supply module and a power switching module controllable by the microprocessor to switch between the solar cell set and the rechargeable battery set so that the idle power supply module provides battery power supply from the solar cell set or the rechargeable battery set to the recognition system of the automatic vending machine when the recognition system is in the idle mode, thereby saving power consumption. | 2011-03-31 |
20110074335 | WIRELESS COMMUNICATION MODULE - A wireless communication module includes a photoelectric conversion unit, a battery, and a communication unit. The photoelectric conversion unit is used to receive a light source, convert the light source into an electrical energy, and output the electrical energy. The battery is electrically connected to the photoelectric conversion unit, and is used to store the electrical energy. The communication unit is electrically connected to the battery, and is powered by the electrical energy. When the wireless communication module is applied to a communication device, a solar energy source is used as a source of an electrical power, and as the photoelectric conversion unit and the communication unit are integrated into a system on chip (SOC), an overall volume of the communication device is effectively reduced. | 2011-03-31 |
20110074336 | APPARATUS WITH A CAPACITIVE CERAMIC-BASED ELECTRICAL ENERGY STORAGE UNIT (EESU) WITH ON-BOARD ELECTRICAL ENERGY GENERATION AND WITH INTERFACE FOR EXTERNAL ELECTRICAL ENERGY TRANSFER - Within an apparatus ( | 2011-03-31 |
20110074337 | MOBILE ELECTRONIC DEVICE - An electronic device is disclosed. The electronic device comprises at least one solar cell, and voltage-detection means operable to detect an output voltage of the at least one solar cell to obtain a detected output voltage. The electronic device also comprises control means operable to detect an operation of the at least one solar cell based on the detected output voltage, and to perform a predefined control depending on the operation. | 2011-03-31 |
20110074338 | Multifunctional Computer Rechargeable Battery Application System and Application Method Thereof - A multifunctional computer chargeable battery application system and its application method are provided. The multifunctional computer chargeable battery application system includes a computer unit, a chargeable battery, a computer interface connected to the chargeable battery with the computer unit so that the battery is used to supply power to the computer unit or charge the computer unit, and an extension application functional module, wherein the battery is used to supply power to or charge the extension application functional module, and the extension application functional module is combined together with the chargeable battery by an embedding mode into a whole, or combined together with the chargeable battery through a detachable connection. | 2011-03-31 |
20110074339 | INFORMATION PROCESSING APPARATUS - An information processing apparatus includes: a case; a battery attachment module which is configured to be provided in the case and to which a first battery and a second battery capable of being charged with a current larger than a current for the first battery are selectively attached; a first connector that is configured to be provided in the battery attachment module and with which the first battery is connected; and a second connector which is configured to be provided in the battery attachment module, with which the second battery is connected, and which is capable of flowing a current larger than a current for the first connector. | 2011-03-31 |
20110074340 | Portable electronic device charging module with changeable plug connector - A portable electronic device charging module with changeable plug connector includes a charging module; a charging port connected to one end of the charging module for electrically connecting to an electronic device for conducting electric energy from the electronic device to the charging module, so that the electric energy is stored in the charging module; and a plug connector fitting seat connected to the other end of the charging module for at least one changeable plug connector to connect thereto. When the changeable plug connector is connected to the plug connector fitting seat by sliding in a sliding-fit direction defined by a pair of sliding-fit sections on the plug connector fitting seat, the charging module can supply power to or charge a mobile electronic product via the plug connector fitting seat and the changeable plug connector, to which the mobile electronic product is connected. | 2011-03-31 |
20110074341 | NON-CONTACT INTERFACE SYSTEM - An interface system for a sensor wafer may comprise a sensor wafer having a substrate. One or more sensors may be mounted to the substrate. An electronics module may be mounted to the substrate and coupled to the one or more sensors. An energy storage device may be mounted to the substrate and coupled to the electronics module. A secondary coil may be attached to a surface of the sensor wafer, and coupled to the electronics module of the sensor wafer, having a diameter of at least 50 millimeters. A primary coil may be attached to a front opening universal pod (FOUP). The primary coil, may situated and oriented in the FOUP such that the primary coil is concentric with the secondary coil and at least 8, but less than 12 millimeters from the sensor wafer when the sensor wafer is stored in a slot in the FOUP. | 2011-03-31 |
20110074342 | WIRELESS ELECTRICITY FOR ELECTRONIC DEVICES - A system and method for the wirelessly charging electronic devices. For example, the electronic device may be a pulse oximeter with a wireless sensor. The wireless sensor may include a sensor power source adapted to power the wireless sensor. The wireless sensor may also include a sensor charging device adapted to receive a wireless electromagnetic charging signal and charge the power source via the wireless electromagnetic charging signal. | 2011-03-31 |
20110074343 | WIRELESS COMMUNICATION MODULE - A wireless communication module includes a radiation unit, a battery, and a communication unit. The radiation unit has an antenna and a rectifier, in which the antenna is used to receive a radio frequency (RF) signal, and the rectifier converts the RF signal and outputs a voltage signal. The battery receives the voltage signal, and accordingly stores an electrical energy. The communication unit is electrically connected to the battery, and is powered by the electrical energy. When the wireless communication module is applied to a communication device, the RF signal is used as a source of an electrical power, and as the radiation unit and the communication unit are integrated into a system on chip (SOC), an overall volume of the communication device is effectively reduced. | 2011-03-31 |
20110074344 | WIRELESS CHARGER USING INDUCTIVE COUPLING - A wireless charger of an inductive coupling type for charging a portable device provided with a rechargeable built-in battery having a second coil, includes a housing provided with a touch pad on one surface; a first coil retained within the housing; and a driving means for horizontally moving the first coil in a plane parallel to the one surface on which the touch pad is installed, wherein when the portable device is placed on the touch pad, the touch pad senses the position of the portable device to activate the driving means and displaces the first coil to a position facing the second coil. | 2011-03-31 |
20110074345 | INDUCTIVE CHARGING SYSTEM IN COMMUNICATIONS WITH OBJECTS BEING CHARGED AND WITH MICROPROCESSOR CONTROLLED DIAGNOSTICS - A method for wirelessly charging and/or re-charging at least one sports object embedded with a battery and circuitry is provided. The method includes positioning the sports object proximate to a charging system, the charging system containing circuitry for wirelessly communicating with the sports object, whereby information is bi-directionally transferred by radio frequency and electric power is transferred to the sports object by induction. The sports object circuitry is adapted for determines a charging requirement of the power cell therein. | 2011-03-31 |
20110074346 | VEHICLE CHARGER SAFETY SYSTEM AND METHOD - Wireless vehicle charger safety systems and methods use a detection subsystem, a notification subsystem and a management subsystem. The detection subsystem identifies a safety condition. The notification subsystem provides an indication of the safety condition. The management subsystem addresses the safety condition. In particular, undesirable thermal conditions caused by foreign objects between a source resonator and a vehicle resonator are addressed by sensing high temperatures, providing a warning and powering down a vehicle charger, as appropriate for the environment in which the charger is deployed. | 2011-03-31 |
20110074347 | WIRELESS ENERGY TRANSFER - Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure. | 2011-03-31 |
20110074348 | AUTOMATIC METHOD FOR CONTROLLING A HIGH-FREQUENCY INDUCTIVE COUPLING POWER TRANSFER SYSTEM - The invention relates to an automatic method for controlling a high-frequency inductive coupling power transfer system, which maintains the transferred power at a load equal to the nominal load with misalignments of up to 99% of the area of the secondary, in which the supply voltage and frequency of the system are controlled using a closed-loop control system in order to regulate the misalignments and the variation in the distance to the secondary and, in this way, transfer the nominal power. | 2011-03-31 |
20110074349 | SYSTEMS AND METHODS FOR PROVIDING WIRELESS POWER TO A PORTABLE UNIT - A wireless charging system for inductively charging and/or powering a device. The system includes a stationary base system and a moving subject. The stationary base system includes an array of primary coils that are adapted to generate a magnetic field, and a sensor system. The moving subject carries a device that includes a secondary coil that can be inductively charged and/or powered by the magnetic field emitted from the primary coil, and a magnet to be tracked by the sensor system. The moving subject can move in proximity to a surface of the stationary base system. The sensor system is adapted to communicate the location of the moving subject along the surface, wherein those coils closest to the moving subject may be activated. | 2011-03-31 |
20110074350 | KIOSK VEHICLE CHARGING AND SELECTING SYSTEMS - A vehicle charging and selection system for kiosk operated electrical vehicles. The system includes a utility connected AC charging source, a battery-to-battery DC charging source, a number of vehicle charging stations, a local power bus connectable to both charging sources and each of the charging stations and a system controller connected to each of the charging stations. The system controller evaluates the vehicle battery condition of each electric vehicle connected to one of the charging stations and determines the most efficient method for charging the largest number of vehicle batteries based on current condition of the individual batteries, weather conditions, time of day, status of the utility electrical grid, etc. The system controller also selects one of the connected electric vehicles for customer use by using the battery charging information and additional information about the desired trip provided by the customer and other external data sources monitored by the system controller. | 2011-03-31 |
20110074351 | Overhead Electric Vehicle Charging System - An electric charging system for charging electric vehicles is particularly adapted for use in a parking garage. Parking spaces in the garage are fixed with a charging station so that the vehicles may be charged while they park at the garage. The power cable which connects to charge the vehicle battery is suspended at a height generally above the vehicle and is automatically retractable. Information concerning the power charge is automatically transmitted to the payment station at the exit gate. A point of sale (POS) module is mounted for communication with the power cable. The point of sale (POS) module and the connector are easily accessible and the connector is positionable for ease of connection with the vehicle terminal. A retractor for extending and retracting an overhead power cable employs a drive wheel and a clutch which are electronically controlled. | 2011-03-31 |
20110074352 | Compensating for cord resistance to maintain constant voltage at the end of a power converter cord - A cord correction circuit in a primary-side-controlled flyback converter compensates for the loss of output voltage caused by the resistance of the charger cord. In one embodiment, a correction voltage is subtracted from a feedback voltage received from a primary-side auxiliary inductor. A pre-amplifier then compares a reference voltage to the corrected feedback voltage. In another embodiment, the correction voltage is summed with the reference voltage, and the pre-amplifier compares the feedback voltage to the corrected reference voltage. The difference between the voltages on the input leads of the pre-amplifier is used to increase the output voltage to compensate for the voltage lost through the charger cord. The flyback converter also has a comparing circuit and a control loop that maintain the peak level of current flowing through the primary inductor of the converter. Adjusting the frequency and pulse width of an inductor switch signal controls the converter output current. | 2011-03-31 |
20110074353 | Battery charger - A battery charger for charging a detachably attached battery pack by supplying an electric power from an external power source, the battery charger includes a notification unit for notifying a user of a charging operation by turning on or flickering a light-emitting member. The notification unit notifies the user of a power connection state of the battery charger by turning on or flickering the light-emitting member immediately after the battery charger is electrically connected to the external power source without attaching the battery pack thereto, and the notification unit turns off the light-emitting member after a predetermined period of time lapses and keeps the light-emitting member in an off-state until the battery pack is attached to the battery charger. | 2011-03-31 |
20110074354 | CAR POWER SOURCE APPARATUS, AND CAPACITY EQUALIZING METHOD FOR THE CAR POWER SOURCE APPARATUS - The power source apparatus is provided with a unit switch | 2011-03-31 |
20110074355 | BATTERY UNIT BALANCING SYSTEM - A battery unit balancing system comprises a discharging circuit and means for connecting the discharging circuit to a battery unit. The discharging circuit is configured such that it is automatically activated, when a voltage of the battery unit exceeds a predetermined threshold, to draw a constant discharging current from the battery unit until the voltage of the battery unit falls below the predetermined threshold. | 2011-03-31 |
20110074356 | Charge and Discharge Circuit of Secondary Battery and Battery Pack - A charge and discharge circuit and a battery pack, both capable of voluntarily perform proper switching between a charge operation and a discharge operation of a secondary battery according to various situations, are provided. The charge and discharge circuit of a secondary battery is one capable of charging the secondary battery E | 2011-03-31 |
20110074357 | CONTROL SYSTEM FOR A FLOW CELL BATTERY - A controller for controlling a flow cell battery system is provided. The controller operates the flow cell battery system in a plurality of states including a plating state, a charging state and a discharge state. | 2011-03-31 |
20110074358 | Battery Protection Device which Utilizes Light Current to Control Heavy Current - A battery protection device which utilizes light current to control heavy current primarily uses an electronic control circuit of light current in combination with a large current control element, such as a relay, to protect large current recharging and discharging of a battery. The light current electronic control circuit includes three main circuits: a main control (micro control unit) circuit, a sampling circuit and a relay control circuit. The relay is primarily a latching relay, allowing the relay to have a self-locking function after operation, without continually supplying electricity to a solenoid. | 2011-03-31 |
20110074359 | SELF CONTAINED POWER SOURCE - A self-contained power source to charge a battery and/or power a load is provided. The power source does not utilize a connection to an external power supply, such as AC mains and/or an AC to DC converter. In one embodiment, the self-contained power source includes an ultra low voltage power generator, such as 0.3V of a single solar cell, or even lower to slightly above the GND potential, that provides a voltage to a rechargeable battery, a load or both. A voltage converter with boost topology is used to supply a voltage comparable to the voltage of the rechargeable battery. A first push circuit containing a zero threshold voltage switch, a MUX circuit and a one-pulse-control block is utilized to ensure initial and continued operation of the voltage converter. | 2011-03-31 |
20110074360 | POWER ADAPTER WITH INTERNAL BATTERY - An adapter including an associated battery capable of powering an electronic device. The power adapter typically includes the battery as an integral component that is connected to a plug or other interface capable of mating with a power source, such as a wall socket. Thus, the adapter battery may provide power either to operate the device or charge a battery within (or otherwise associated with) the device even if the adapter is not connected to a power source. | 2011-03-31 |
20110074361 | ANTIFERROELECTRIC CAPACITOR-ENABLED POWER CONVERTER - A power converter utilizes one or more nonlinear composite film capacitors constructed solely of polymer anti-ferroelectric (AFE) particle composites and configured as DC-link bus capacitors providing an energy buffer to reduce DC-link voltage ripple. | 2011-03-31 |
20110074362 | BATTERY UNIT - A battery unit includes: a case; a circuit board configured to be provided in the case; a battery cell configured to be provided in the case and an endothermic reaction occurs during charging and an exothermic reaction occurs during discharging therein; a heat generating component configured to be provided on the circuit board; and a heat transferring member configured to be thermally connected with the heat generating component and the battery cell, and to transfer heat generated by the heat generating component to the battery cell. | 2011-03-31 |
20110074363 | ELECTRONIC APPARATUS WITH FAKE CHARGING PREVENTING FUNCTION AND METHOD THEREOF - A method for preventing fake charging of an electronic apparatus is provided. The method includes: providing a power management table for setting function units for each power range; activating a fake charging preventing function according to a predetermined condition or an activating operation of users; detecting power of the electronic apparatus every a first predetermined time interval; determining a current power range the detected power falls into; determining whether the current power range is changed; beginning to time when the current power range is changed; activating function units which are disabled and whose power range is the current power range when the timing reaches a second predetermined time interval and the detected power is still in the current power range. | 2011-03-31 |
20110074364 | CONTROL DEVICE FOR VEHICLE POWER CONVERTER - The control device detects the B-terminal voltage by a B-terminal voltage detection section. When an abnormal voltage detection section detects that a voltage value of the detected B-terminal voltage is equal to or higher than a predetermined voltage value, all switching elements of the negative pole-side arm in a power conversion section are brought into conduction by a negative pole-side arm short-circuiting section, whereas all switching elements of a positive pole-side arm are interrupted. In addition, a field current is limited to zero or to a limit value by a field current control section. | 2011-03-31 |
20110074365 | WIND POWER GENERATING SYSTEM AND CONTROL METHOD FOR THE SAME - A wind power generating system includes a unit for eliminating harmonics component of specified-order from inputted current detection value of a grid-side converter and a unit for controlling the grid-side converter using the current detection value in which harmonics are eliminated. | 2011-03-31 |
20110074366 | PERMANENT MAGNET GENERATOR HAVING PASSIVE FLUX CONTROL - A permanent magnet generator assembly has a permanent magnet generator with magnetic flux control windings, a passive rectifier, and a passive control element. The passive control element electrically connects an output of the passive rectifier to the magnetic flux control windings. | 2011-03-31 |
20110074367 | STATIC COMPENSATOR AND METHOD FOR CONTROLLING THEREOF - The present invention relates to a static compensator and a method for controlling thereof, more particularly, to a static compensator including a transformer connected with a bus of a power system; an inverter operating according to a control signal and connected to the transformer in series; a tap changer changing turn ratio of the transformer; and a controller generating the control signal to operate the inverter and generating a tap up or a tap down signal to provide to the tap changer and a method for controlling thereof. | 2011-03-31 |
20110074368 | POWER DELIVERY SYSTEM WITH SURGE HANDLING CAPABILITY - A sensing circuit senses a load current to generate a sensed signal. A comparator's output is set to a first value if the sensed signal is equal to or greater than a reference signal, and to a second value if the sensed signal is smaller than the reference signal. A one-shot timer generates a logic signal that transitions from a first state to a second state in response to a first occurrence of the first value of the comparator's output, or optionally in response to each subsequent occurrence of the first value of the comparator's output if the one-shot timer is rearmed. A selector sets a first limit for the current delivered to the load in response to the first state of the logic signal, and a second limit for the current delivered to the load in response to the second state of the logic signal. | 2011-03-31 |
20110074369 | SEMICONDUCTOR APPARATUS AND CALIBRATION METHOD THEREOF - A semiconductor apparatus includes a reference voltage generation unit, a comparison voltage generation unit, and a calibration unit. The reference voltage generation unit is disposed in a reference die and configured to generate a reference voltage. The comparison voltage generation unit is disposed in a die stacked on the reference die and configured to generate a comparison voltage in response to a calibration control signal. The calibration unit is configured to compare a level of the reference voltage with a level of the comparison voltage and generate the calibration control signal. | 2011-03-31 |
20110074370 | VOLTAGE REGULATOR - Provided is a voltage regulator capable of setting an accurate short-circuit current. Used as a circuit for determining a current value of a short-circuit current of an overcurrent protection circuit is not a resistor for converting current into voltage but a circuit for controlling in the form of current, that is, a circuit of an N-channel depletion type transistor including a gate and a drain that are connected to each other and operating in a non-saturated state. The N-channel depletion type transistor has process fluctuations that are linked with those of a detection transistor, and hence an accurate short-circuit current may be set without trimming. | 2011-03-31 |
20110074371 | SINGLE-BOUND HYSTERETIC REGULATION OF SWITCHED-CAPACITOR CONVERTERS - A voltage regulator may include a comparator with a first comparator input to receive a reference voltage, a second comparator input to receive an output voltage from a phase interleaved converter, and a comparator input. The regulator may also include a set of cascaded flip-flops corresponding to phases of the converter. The set of cascaded flip-flops may have a plurality of phase outputs to trigger a phase transition in the converter if the output voltage falls below the reference voltage. | 2011-03-31 |
20110074372 | Architecture of a Power Supply Circuit with Power Factor Correction - An improved architecture of a power supply circuit with power factor correction, the power supply circuit includes power supply circuit output terminals and a voltage negative feedback circuit, the power supply circuit output terminals include a high potential terminals and a low potential terminals, the voltage negative feedback circuit includes a first feedback circuit and a second feedback circuit connected in series in order from the high potential terminal to the low potential terminal, a connection point of the first feedback circuit and the second feedback circuit acts as a feedback signal output terminal through which the voltage negative feedback circuit outputs a feedback signal, in the improved architecture, the first feedback circuit is replaced by a light source branch including a constant-current light source, and the second feedback circuit is replaced by a resistor branch for determining a working current of the light source branch. This improved architecture can perform a constant-current supply with high power factor and high efficiency for the light source. | 2011-03-31 |
20110074373 | CONTROL CIRCUIT AND METHOD FOR A BUCK-BOOST POWER CONVERTER - Control signals are generated for a buck-boost power stage of a buck-boost power converter to convert an input voltage to an output voltage. The buck-boost power stage includes an inductor and at least two power switches connected thereto. The output voltage is monitored to generate an error signal having clamped level according to a first detecting signal related to at least one of the input voltage, output voltage and inductor current. In a buck-boost mode, a compensation signal and a duty insertion signal are generated according to a second detecting signal related to at least one of the input voltage, output voltage, inductor current and variation of the output voltage, the error signal is compensated with the compensation signal to generate a compensated error signal, and the control signals are determined upon the combination of the compensated error signal, the duty insertion signal and a ramp signal. | 2011-03-31 |
20110074374 | DRIVING APPARATUS FOR AN ELECTROMAGNETIC LOAD AND RELATED METHOD - A driving apparatus for an electromagnetic load, said apparatus having at least one pair of first and second transistors arranged so as to form a current path with the electromagnetic load for discharging the current produced by the electromagnetic load. The first transistor has an inherent diode between the non-drivable terminals and the apparatus is configured to control switching of the pair of first and second transistors, to diode-connect the second transistor, with said first and second transistors switched off, so that the current produced by said electromagnetic load, crossing said inherent diode, creates an overvoltage between the terminals of the second diode-configured transistor such to exceed the conduction threshold voltage thereof. | 2011-03-31 |
20110074375 | Gate Driver in Buck Converters - A circuit for driving a switching stage including control and sync switches series connected at a switching node, at least one of the control and sync switches being a normal ON depletion mode device, the circuit comprising a gate driver including first and second switching stages for generating gate drive signals for the sync and control switches, respectively, the first switching stage having a first driver output node and the second switching stage having a second driver output node, a signal from the first node driving the sync switch and a signal from the second node driving the control switch and a circuit connected to the first and second switching stages, the circuit including a first circuit providing a first voltage source, the first circuit being coupled to the first switching stage and to the sync switch, a first bias voltage from the first voltage source being switched by the first switching stage, the first switching stage having a first state wherein the sync switch is on, and a second state wherein the first bias voltage is switched to the gate of the sync switch to turn the sync switch off and a second circuit including a first energy storage device for charging with a second bias voltage, the second switching circuit having a first state, wherein the control switch is on when the sync switch is off and having a second state wherein the control switch is switched off when the sync switch is on by switching the second bias voltage to the gate of the control switch. | 2011-03-31 |
20110074376 | Output Driving Circuit Capable of Reducing EMI Effect - An output driving circuit capable of reducing EMI effect includes a non-overlapping signal generation unit for generating a first non-overlapping signal and a second non-overlapping signal according to an input signal, a pre-driver for generating a first pre-driving signal and a second pre-driving signal according to the first non-overlapping signal and the second non-overlapping signal, a high-side switch, a low-side switch, and a control unit for controlling the high-side switch or the low-side switch to be switched into a weak on state to reduce load inductive current effect for a load. | 2011-03-31 |
20110074377 | TIME CONSTANT CIRCUIT, SWITCH CIRCUIT, DC/DC CONVERTER, AND DISPLAY DEVICE - To provide a time constant circuit and the like capable of acquiring a characteristic of an output voltage that attenuates gradually after attenuating steeply, compared to a characteristic that attenuates monotonously. The time constant circuit includes: a series/parallel circuit formed by serially connecting a plurality of parallel circuits each formed with a resistance element and a capacitance element between a first terminal and a second terminal; and a voltage-dividing resistance element connected between a third terminal connected to the second terminal and a fourth terminal. A first parallel circuit is formed with a first resistance element and a first capacitance element, a second parallel circuit with a second resistance element and a second capacitance element, and an n-th parallel circuit with an n-th resistance element and an n-th capacitance element. Note that “n” is the number of the parallel circuits and it is an integer of 2 or larger. | 2011-03-31 |
20110074378 | Multiphase Power Converters, Controllers and Control Methods - A method of controlling a multiphase power converter including a plurality of sub-converters coupled to provide power to a load is disclosed. Each sub-converter includes a power switch. The method includes selectively and consistently turning on the power switch of one or more of the sub-converters at substantially a same time as a reference signal representing a desired output of the power converter increases. The method further includes selectively and consistently turning off the power switch of one or more of the sub-converters at substantially a same time as the reference signal representing the desired output of the power converter decreases. Other methods, multiphase power converters and controllers for multiphase power converters are also disclosed. | 2011-03-31 |
20110074379 | DC-DC CONVERTER - A DC-DC converter including a power supply supplying direct current (DC) to an inductor, a switching device controlling the supply of DC from the power supply to the inductor by switching between a conductive state and a disconnected state according to a modulation signal, a signal output device generating the modulation signal for increasing or decreasing a period of the conductive state of the switching device, wherein the signal output device increases or decreases a duty ratio of the modulation signal to increase or decrease the period of the conductive state of the switching device, and a delay device controlling an increase of a duty ratio of the modulation signal, wherein the signal output device outputs the modulation signal with the controlled duty ratio to the switching device, thereby delaying the switching device from reaching a conductive state in which the duty ratio is a value of 1. | 2011-03-31 |
20110074380 | ELECTRIC CONDUCTION PAD AND MANUFACTURING METHOD THEREOF - The present invention relates to electric conduction pads and a method for manufacturing the same, and more particularly, to an electric conduction pad having elastic properties while enabling heat emission, passage of electric current and transmission of electrical signals, using an electrically conductive wire material, as well as a method for manufacturing the same. The electric conduction pad of the present invention comprises: a stretchable planar pad; and at least one conductive wire aligned in a zig-zag pattern on the pad to pass electric current supplied from a power source or emit heat by the same. | 2011-03-31 |
20110074381 | SENSORS USING HIGH ELECTRON MOBILITY TRANSISTORS - Embodiments of the invention include sensors comprising high electron mobility transistors (HEMTs) with capture reagents on a gate region of the HEMTs. Example sensors include HEMTs with a thin gold layer on the gate region and bound antibodies; a thin gold layer on the gate region and chelating agents; a non-native gate dielectric on the gate region; and nanorods of a non-native dielectric with an immobilized enzyme on the gate region. Embodiments including antibodies or enzymes can have the antibodies or enzymes bound to the Au-gate via a binding group. Other embodiments of the invention are methods of using the sensors for detecting breast cancer, prostate cancer, kidney injury, glucose, metals or pH where a signal is generated by the HEMT when a solution is contacted with the sensor. The solution can be blood, saliva, urine, breath condensate, or any solution suspected of containing any specific analyte for the sensor. | 2011-03-31 |
20110074382 | WHOLE STRUCTURE CONTACTLESS POWER CONSUMPTION SENSING - A contactless current and power consumption sensor can be safely mounted on a circuit breaker box of a structure, so as to sense the current flow and/or power consumed in the structure. Because the sensor can be mounted on a surface of the circuit breaker box without the need to access energized conductors inside the box, an unskilled person can readily install the sensor to monitor total instantaneous current flow and thus, determine the power consumed by energized devices in the structure on a continuing basis. The output from the sensor can be supplied to a readout or can be conveyed by a wired or wireless link to a computing device disposed at a remote location, where the data can be stored or viewed on a display. By integrating the power consumed over time, the energy usage by the energized devices in a structure can also be determined. | 2011-03-31 |
20110074383 | Assemblies and Methods for Sensing Current Through Semiconductor Device Leads - Assemblies and methods for sensing current through semiconductor device leads are disclosed. One example method includes mounting a current sense assembly about a lead of a semiconductor device. The current sense assembly may include a carrier adapted to hold a current sensor in close proximity to a semiconductor device lead to sense current flowing in the lead. One example assembly for sensing current through a semiconductor device lead includes a carrier for mounting to the semiconductor device lead and a current sensor supported by the carrier. The carrier includes output terminals. The current sensor has leads electrically coupled to the output terminals. The current sensor is positioned to extend around at least a portion of the lead and provide a signal to the output terminals representing current flowing in the lead when the carrier is mounted to the lead. | 2011-03-31 |
20110074384 | METHOD AND APPARATUS TO MEASURE CURRENT IN POWER SWITCHERS - A method and apparatus to measure current in power switching supplies is disclosed for simplification of in-circuit measurement. The method and apparatus to measure current includes a sensing capacitor which in series with a resistor is placed across the output inductor of the power supply in order to utilize the parasitic resistance of the inductor, in conjunction with a measurement controller which performs initial calibration and temperature compensation. Initial and secondary measurements are performed using an adjustable current sink in order to eliminate thermal effects. The method and apparatus to measure current in power switching supplies is particularly useful for overcoming invasive measurement techniques of for measuring current known in the art. | 2011-03-31 |
20110074385 | SEMICONDUCTOR INTEGRATED CIRCUIT - There is provided a semiconductor integrated circuit in which a ring oscillator is formed by a variable delay circuit to cause the ring oscillator to oscillate (S | 2011-03-31 |
20110074386 | VOLTAGE INDICATOR SIGNAL GENERATION SYSTEM AND METHOD - The present invention provides for a system comprising a peripheral component interface (PCI) host bridge. The PCI host bridge is configured to be coupled to a PCI bus, and to receive a system reset signal, to generate a PCI bus reset signal based on the received system reset signal, to detect a PCI operational mode of the PCI bus, and to generate a voltage indicator signal based on the detected PCI operational mode. A voltage regulator is coupled to the PCI host bridge and configured to receive the voltage indicator signal and to regulate a signaling voltage for the PCI bus based on the voltage indicator signal. | 2011-03-31 |
20110074387 | METHOD AND APPARATUS FOR SPECTRUM DETECTION - A spectrum detection method, system and base station are provided, which relate to the field of communications technology, and improve the spectrum utilization in a cellular multi-hop network. The spectrum detection method includes: receiving an intermediate spectrum detection result sent by each node; and integrating the intermediate spectrum detection results to obtain a final spectrum detection result. The spectrum detection method, system, and base station are mainly applied to cellular multi-hop networks. | 2011-03-31 |
20110074388 | EMBEDDED COUPLER DEVICE AND METHOD OF USE THEREOFF - A structure is provided, the structure includes a metallic coupler circuit formed within a disk located within a coaxial cable connector. The metallic coupler circuit is located in a position that is external to a signal path of a radio frequency (RF) signal flowing through the connector. The metallic coupler circuit is configured to extract samples of the RF signal flowing through the connector. | 2011-03-31 |
20110074389 | Signal Acquisition System Having Probe Cable Termination in a Signal Processing Instrument - A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable with the signal cable coupled to a signal processing instrument via an input node. The input node is coupled to an input current amplifier via input circuitry. The input circuitry provides at least one of resistive and capacitive termination of the resistive center conductor signal cable. The termination of the resistive center conductor signal cable in the signal processing instrument provides a signal acquisition system where the capacitive loading of a device under test at higher frequencies is reduced by reducing the input capacitance of the probe tip circuitry resulting in an increase in the signal acquisition system bandwidth. | 2011-03-31 |
20110074390 | Signal Acquisition System Having Reduced Probe Loading of a Device Under Test - A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth. | 2011-03-31 |
20110074391 | Signal Acquisition System Having a Compensation Digital Filter - A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a compensation digital filter providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth. | 2011-03-31 |
20110074392 | Signal Acquisition System Having Reduced Probe Loading of a Device Under Test - A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a shunt pole-zero pair coupled to the input circuitry providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth. | 2011-03-31 |
20110074393 | TEMPERATURE COMPENSATED FIBER OPTIC CURRENT OR MAGNETIC FIELD SENSOR WITH INSENSITIVITY TO VARIATIONS IN SENSOR PARAMETERS - A fiber optic current or magnetic field sensor uses a sensing fiber in a coil for measuring a current or a magnetic field and has a retarder for converting between linearly polarized light and elliptically polarized light. The retardation of the retarder; its temperature dependence as well as its azimuth angle in respect to the plane of the fiber coil are optimized in dependence of the birefringence in the sensing fiber in order to minimize the influence of temperature variations and manufacturing tolerances on the overall scale factor of the sensor. | 2011-03-31 |
20110074394 | TEST CIRCUIT FOR BIAS TEMPERATURE INSTABILITY RECOVERY MEASUREMENTS - A method, test circuit and test system provide measurements to accurately characterize threshold voltage changes due to negative bias temperature instability (NBTI) and positive bias temperature instability (PBTI). Both the bias temperature instability recovery profile and/or the bias temperature shifts due to rapid repetitions of stress application can be studied. In order to provide accurate measurements when stresses are applied at intervals on the order of tens of nanoseconds while avoiding unwanted recovery, and/or to achieve recovery profile sampling resolutions in the nanosecond range, multiple delay or ring oscillator frequency measurements are made using a delay line that is formed from delay elements that have delay variation substantially caused only by NBTI or PBTI effects. Devices in the delay elements are stressed, and then the delay line/ring oscillator is operated to measure a threshold voltage change for one or more measurement periods on the order of nanoseconds. | 2011-03-31 |
20110074395 | DIGITAL MULTIMETERS INCLUDING A REMOTE DISPLAY - A digital multimeter includes a body having a function selector and a first coupler and includes a head having a display and a second coupler. The function selector selects a parameter to be measured, and the display displays a measurement corresponding to the parameter to be measured. The first and second couplers are engaged in a first arrangement joining the body and the head, and the first and second couplers are disengaged in a second arrangement separating the body and the head. | 2011-03-31 |
20110074396 | BIOSENSOR AND ELECTRODE STRUCTURE THEREOF - An electrode structure of a biosensor includes a flexible conductive substrate and a plurality of conductive probes protruding from the conductive substrate and configured for contacting a subject and receiving a physiological electric wave signal therefrom. The present invention improves disadvantages of wet electrodes and microstructure electrodes and provides more stable signals that may less decay with time so as to achieve real-time and long-acting measurement for physiological electric wave signal. A biosensor using the electrode structure is also disclosed. | 2011-03-31 |
20110074397 | MONITORING SYSTEM AND CURRENT TRANSFORMERS FOR PARTIAL DISCHARGE DETECTION - A high frequency current transformer (HFCT) sensor for detecting partial discharges produced by a component is disclosed. The HFCT sensor includes at least one electrically conductive pattern formed on a substrate, where the substrate comprises multiple segmented regions connected by intermediate regions for folding along multiple fold lines between the segmented regions to form the HFCT sensor. A system for monitoring at least one component of an aircraft wiring system is also disclosed. The monitoring system includes at least one of the HFCT sensors for detecting partial discharges produced by the aircraft wiring system component. The monitoring system further includes a data acquisition system configured to monitoring signals from the HFCT sensor(s). | 2011-03-31 |
20110074398 | METHODS AND SYTEMS TO DETECT VOLTAGE CHANGES WITHIN INTEGRATED CIRCUITS - Methods and systems to detect droop events on-chip, which may include a sensor circuit located adjacent to a voltage node to convert a corresponding voltage to a digital count or value indicative of the voltage. The sensor circuit may include an n-stage ring oscillator and an asynchronous counter. The sensor circuit may include circuitry to capture and convert a phase associated with a count to a binary fractional value to increase voltage resolution. Multiple counts associated with the node may be evaluated at the node to identify minimum and maximum counts and corresponding time stamps. More complex evaluation and control circuitry may be shared amongst a plurality of sensor circuits and may include circuitry to generate and compare counts to one or more variable thresholds, circuitry to average counts over time, and memory to store state values associated with the sensors. | 2011-03-31 |
20110074399 | MAGNETORESISTIVE SENSOR FOR DETERMINING AN ANGLE OR A POSITION - A magneto-resistive resistor for use in sensors for determining alignment of the sensor relative to a homogeneous magnetic field include an anisotropic magnetoresistive (AMR) strip having a longitudinal extent and a first and second edge along the longitudinal extent. The first and second edge have a shape along the longitudinal extent such that the direction of current flowing through the strip varies continuously along the longitudinal extent of the strip. The shape of the first and second edges produce a resistance determining angle with respect to the homogeneous magnetic field, the angle varying throughout the length of the strip and filtering out harmonics. A sensor bridge comprising at least one AMR resistor pair, each resistor electrically connected to the other resistor, a positive input contact and a negative input, and an output voltage tap electrically connected between the resistors in each resistor pair. | 2011-03-31 |
20110074400 | ROTATION ANGLE DETECTING DEVICE - Provided is a rotation angle detecting device with high detection accuracy, which can be structured with a small number of teeth even if a shaft angle multiplier increases, thus enhancing winding workability and becoming suitable for mass production. The rotation angle detecting device includes: a stator formed of an iron core with teeth, the stator including: an exciting winding of one phase or more; and output windings of two phases or more; and a rotor with a salient pole, in which numbers of turns of the output windings of the two phases each have a value obtained by a function containing a sum or a difference between a sine wave of an order equal to an absolute value of a sum of a number of the salient poles and a number of the pole pairs, and a sine wave of an order equal to an integer that is different from an absolute value of the number of the pole pairs of the exciting winding and different from an absolute value of a difference obtained by subtracting the number of the salient poles from the number of the pole pairs. | 2011-03-31 |
20110074401 | Apparatus and method for automatic product effect compensation in radio frequency metal detectors - A metal detector ( | 2011-03-31 |
20110074402 | MAGNETIC SENSOR MODULE - In a magnetic sensor module, using die-bond resin as a joining material, a Z-axis magnetic sensor is mounted onto a substrate having a wire formed on its principal surface. The Z-axis magnetic sensor having electrode pads formed on its bottom surface is tilted by 90 degrees and mounted onto the substrate. Therefore, the electrode pads are positioned at a side surface thereof. A joining material accommodation area which the die-bond resin can fill is provided at the surface of the Z-axis magnetic sensor opposing the principal surface of the substrate. This joining material accommodation area has a grooved structure. At the surface of the Z-axis magnetic sensor opposing the principal surface of the substrate, the grooved structure is provided at an end portion near the wire formed on the substrate. | 2011-03-31 |
20110074403 | HIGH-SENSITIVITY, IN-VIVO, AND DYNAMIC DETECTION OF MAGNETIC PARTICLES WITHIN LIVING ORGANISM USING A PROBE-TYPE SQUID SYSTEM - The present invention provides a probe-type SQUID system to detect magnetic particles stored in the living organisms or magnetic-labeling indicators for immunoassays and tumor or other applications. The probe-type SQUID system comprises a probe union, a SQUID union and a connecting electrically conducting wires such as copper wires, wherein the probe union is coupled with a cooling module such as TE cooler module to avoid power heating so that the probe can approach to the living organism to detect magnetic particles with high-sensitivity. | 2011-03-31 |
20110074404 | MAGNETIC SENSOR CIRCUIT - Provided is a magnetic sensor circuit of low power consumption, in which a magnetic detection level less depends on a resistance value of an internal resistor of a power source. A comparator circuit compares a voltage which is based on a magnetic field and generated after sampling under a state in which power is supplied to mainly a Hall element and an amplifier circuit to drop a power supply voltage, with a reference voltage after sampling under the same state. Both the voltages are generated based on the power supply voltage dropped by an internal resistor. Therefore, the magnetic detection level less depends on a resistance value of the internal resistor. The comparator circuit may be disabled during a sample period, and the Hall element and the amplifier circuit may be disabled during a comparison period, and hence power consumption of the magnetic sensor circuit is reduced by corresponding power. | 2011-03-31 |
20110074405 | Magnetic Field Sensor with Automatic Sensitivity Adjustment - Magnetic field sensors have a magnetic field sensing element and also a feedback circuit to provide a gain-adjustment signal to affect a sensitivity associated with the magnetic field sensing element. In some arrangements, the feedback circuit can include piezoresistors to sense a strain of a substrate over which the magnetic field sensor is disposed. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed strain. In other arrangements, the feedback circuit can generate pulsed magnetic fields proximate to the magnetic field sensing element in order to directly measure the sensitivity of the magnetic field sensing element. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed sensitivity. | 2011-03-31 |
20110074406 | THREE AXIS MAGNETIC FIELD SENSOR - Three bridge circuits ( | 2011-03-31 |
20110074407 | PATIENT POSITIONING COUCH AND COMBINED MEDICAL EXAMINATION DEVICE WITH A PATIENT POSITIONING COUCH - A patient positioning couch for a combined medical examination device is disclosed. In at least one embodiment, at least one opening is provided in a support plate of the patient positioning couch and the patient positioning couch includes at least one conveyor belt in order to move a patient on the support plate in the longitudinal direction. | 2011-03-31 |
20110074408 | PROTON PRECESSION MAGNETOMETER SENSOR MEASURABLE IN ALL DIRECTION - A “proton precession magnetometer sensor capable of all-direction measurement” according to the present invention, in which frequency of current induced in a coil by flowing and then breaking current in the coil is measured to calculate strength of an external magnetic field, is characterized in that the coil is a toroid coil. Alternatively, the coil may be achieved by two solenoid coils connected perpendicularly, or N solenoid coils connected in the form of a polygon, where N is an integer of 3 or more. The proton precession magnetometer sensor is capable of measuring the external magnetic field in all directions since there is no dead band, and is convenient since there is no need of adjusting the sensor to a certain direction when measuring magnetic force. Further, the present invention will bring accumulation of key original technology applicable to various cases in practice through development of improved impedance matching and power consumption optimization in future practice. | 2011-03-31 |
20110074409 | Systems And Methods For Gating An Imaging Device - A method and system for automatically gating an imaging device is disclosed. Physiological process information of a patient may be derived from a plethysmographic signal, for example, by analyzing the plethysmographic signal transformed by a continuous wavelet transform. Other techniques for deriving physiological process information of a patient include, for example, analyzing a scalogram derived from the continuous wavelet transform. The physiological process information may be used to automatically gate imaging data acquired from an imaging device in order to synchronize the imaging data with the physiological process information. | 2011-03-31 |
20110074410 | Calibration of an emission tomography subsystem - A method and a system are disclosed for calibrating an emission tomography subsystem in a combined MR (magnetic resonance) and emission tomography imaging system. In at least one embodiment, the method includes providing a phantom that is configured such that the phantom is visible on a MR image, providing an attenuation map of the phantom, wherein the attenuation map includes an attenuation of the phantom, obtaining the MR image of the phantom, obtaining a position of the phantom from the MR image, mapping the attenuation map with the position of the phantom, and calibrating the emission tomography subsystem using the attenuation map mapped with the position of the phantom. | 2011-03-31 |
20110074411 | MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD - A magnetic resonance imaging apparatus for acquiring k-space data from a deformable imaging region of a subject and generating image data of the imaging region at the time of being deformed to a predetermined state, based on the acquired k-space data, includes a gradient coil for applying a gradient magnetic field in a phase encoding direction, and an image data calculation device for calculating a numeric value for defining a relationship between the imaging region at the time of being deformed to the predetermined state and the imaging region at an nth phase encoding and calculating image data of the imaging region at the time of being deformed to the predetermined state, based on the calculated numeric value and the k-space data acquired from the imaging region. | 2011-03-31 |
20110074412 | MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD - A magnetic resonance imaging apparatus includes z segments which divide a ky-kz plane. The z segments includes data located therein. The ky-kz plane is divided into z center-in regions and z center-out regions by a plurality of lines extending radially from a center of the ky-kz plane. The z center-in regions have data located therein in accordance with first trajectories which proceed toward the center of the ky-kz plane. The z center-out regions have data located therein in accordance with second trajectories which proceed in a direction spaced away from the center of the ky-kz plane. Each of the z segments has one center-in region of the z center-in regions and one center-out region of the z center-out regions. Each of the z segments is defined in which after data have been located in said one center-in region in accordance with the first trajectory, data are located in said one center-out region in accordance with the second trajectory. At least one of the z segments is defined in which an angle of said one center-in region at the center of the ky-kz plane is wider than an angle of said one center-out region at the center of the ky-kz plane. | 2011-03-31 |
20110074413 | SYSTEM AND METHOD FOR CONTROLLING CURRENT IN GRADIENT COIL OF MAGNETIC RESONANCE IMAGING SYSTEM - In one embodiment, a multilevel inverter for generating an AC output voltage, having at least seven potential levels, from a DC voltage source such that the generated AC voltage produces a current in a gradient coil of a magnetic resonance imaging system is provided. The multilevel inverter comprises an input voltage supply device configured for providing a divided DC voltage, at least eight switching arms for deriving the AC output voltages from the divided DC voltages, each of the switching arms comprising an input terminal receiving the divided DC voltage, a switching device controlling the AC output voltage and an output terminal providing the AC output voltage, at least four diodes, each of the four diodes connected to a single pair of switching arms, the four diodes forming a full bridge having positive and negative nodes, one of the nodes connected to the input voltage supply device and another node connected to the input terminals of the switching arms and a controller coupled to the input voltage supply device and the four diodes, the controller configured for producing plurality of control signals for controlling the AC output voltage. | 2011-03-31 |
20110074414 | IMPLANTABLE OR INSERTABLE NUCLEAR MAGNETIC RESONANT IMAGING SYSTEM - Nuclear Magnetic Resonant Imaging (also called Magnetic Resonant Imaging or “MRI”) devices which are implantable, internal or insertable are provided. The disclosure describes ways to miniaturize, simplify, calibrate, cool, and increase the utility of MRI systems for structural investigative purposes, and for biological investigation and potential treatment. It teaches use of target objects of fixed size, shape and position for calibration and comparison to obtain accurate images. It further teaches cooling of objects under test by electrically conductive leads or electrically isolated leads; varying the magnetic field of the probe to move chemicals or ferrous metallic objects within the subject. The invention also teaches comparison of objects using review of the frequency components of a received signal rather than by a pictorial representation. | 2011-03-31 |
20110074415 | APPARATUS FOR TUNING MAGNETIC RESONANCE COIL ELEMENTS AND METHOD OF MAKING SAME - A method, system, and apparatus including a radio-frequency (RF) phased coil array for a magnetic resonance (MR) imaging apparatus that includes a first RF coil element tuned to a first frequency and configured to receive MR signals and a second RF coil element tuned to a second frequency different than the first frequency and configured to receive MR signals. | 2011-03-31 |
20110074416 | MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD - A magnetic resonance imaging apparatus includes a magnetic resonance data acquisition unit and a cerebrospinal fluid image data generation unit. | 2011-03-31 |
20110074417 | MAGNETIC RESONANCE IMAGING APPARATUS AND CONTROL METHOD THEREOF - To provide a magnetic resonance imaging apparatus capable of acquiring a non-contrast MRA image in which a background signal is sufficiently suppressed in a shorter time. A magnetic resonance imaging apparatus has: a data acquiring unit that acquires a plurality of pieces of magnetic resonance data associated with a plurality of different delay times according to a pulse sequence in which a region-selective saturation pulse is first applied, a region-non-selective inversion recovery pulse is then applied, and then the magnetic resonance data is acquired, the delay time being defined as a period from a time of application of the saturation pulse to a time of start of acquisition of the magnetic resonance data; and a blood flow image creating unit that creates a plurality of pieces of blood flow image data associated with the plurality of different delay times using the magnetic resonance data. | 2011-03-31 |