47th week of 2015 patent applcation highlights part 63 |
Patent application number | Title | Published |
20150333640 | Forward-Flyback Topology Switched Mode Power Supply - A switched mode power supply ( | 2015-11-19 |
20150333641 | CONTROL DEVICE OF SYNCHRONOUS RECTIFIER AND POWER SUPPLY - A power supply has a primary side and a secondary side electrically insulated from each other. A switching operation based on a switching of the primary side is controlled according to the power transmitted to the secondary side, and the switching operation is converted at a time earlier than a switching conversion time of the primary side by a predetermined time. | 2015-11-19 |
20150333642 | HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND CONTROLLING METHOD THEREOF - Provided is a high voltage direct current transmission system including a power transmission part converting AC power into DC power; a power receiving part converting DC power into AC power; and a DC power transmission part transferring the DC power converted in the power transmission part to the power receiving part, wherein one of the power transmission part and the power receiving part includes a measuring part measuring an AC voltage; an AC voltage control unit generating a first reactive power control signal based on the measured AC voltage and a reference AC voltage; a reactive power control unit generating a second reactive power control signal based on the first reactive power control signal and a reference reactive power signal; and a power control unit controlling reactive power of the power transmission part or the power receiving part based on the second reactive power control signal. | 2015-11-19 |
20150333643 | HVDC TRANSMISSION SYSTEM - A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes: an integrated measurement panel; and an HVDC transmission device, wherein the HVDC transmission device is configured to: receive, from the integrated measurement panel, compensation values for compensating for the voltage values output through the first to Nth potential transformers, compensate for the voltage values output through the first to Nth potential transformers by using the received compensation values, and measure the actual voltage values by using the compensated voltage values. | 2015-11-19 |
20150333644 | APPARATUS AND METHOD FOR DESIGN OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - Provided is an apparatus for an insulation design. The apparatus for an insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system, includes an HVDC transmission system operation information acquisition unit, a design specification acquisition unit, a design requirement acquisition unit, and an HVDC transmission system design unit. | 2015-11-19 |
20150333645 | APPARATUS AND METHOD FOR INSULATION DESIGN OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - Provided is an apparatus for an insulation design. The apparatus for the insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system, includes a first insulation modeling unit, an insulation level calculation unit, a second insulation modeling unit, and a rated insulation level calculation unit. | 2015-11-19 |
20150333646 | APPARATUS AND METHOD FOR INSULATION DESIGN OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - Provided is an apparatus for an insulation design. The apparatus for the insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system includes a contingency state voltage calculation unit, a case analysis performance unit, and a rated insulation level calculation unit. | 2015-11-19 |
20150333647 | HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND CONTROL METHOD THEREOF - A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes: a rectifier converting alternating current (AC) power into DC power; an inverter converting the DC power into the AC power; a DC transmission line transmitting, to the inverter, the DC power obtained through conversion by the rectifier; a first active power measurement unit measuring first active power input to the rectifier; a second active power measurement unit measuring second active power output from the inverter; and a first control unit detecting an abnormal voltage state on the DC transmission line based on the first and second active power measured. | 2015-11-19 |
20150333648 | HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND CONTROL METHOD THEREOF - A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes a rectifier converting alternating current (AC) power into DC power; an inverter converting the DC power into the AC power; DC transmission lines W | 2015-11-19 |
20150333649 | MODULAR MULTI-LEVEL CONVERTER - Provided is a modular multi-level converter including a plurality of sub-modules including switching elements, a plurality of sub-control units respectively controlling the plurality of switching elements included in the plurality of sub-modules, and a central control unit which determines switching operation conditions of the plurality of sub-modules, and transmits control signals corresponding to the determined switching operation conditions to the plurality of sub-control units. Each of the plurality of sub-control units acquires state information on the sub-module controlled thereby and transmits the acquired state information to the central control unit. | 2015-11-19 |
20150333650 | DATA PROCESSING DEVICE AND METHOD FOR HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - A data processing device is provided. The data processing device in a high voltage direct current (HVDC) transmission system includes a measurement module measuring a voltage or current for one or more points in the HVDC system; and a data processing and control unit generating measurement data units using measurement values measured at the measurement module and performing serial transmission on the generated measurement data units through time division multiplexing (TDM), wherein the data processing and control unit includes a plurality of data unit generation parts, and each of the plurality of data unit generation parts outputs a transmission completion signal representing that the transmission of a measurement data unit is completed. | 2015-11-19 |
20150333651 | DATA PROCESSING DEVICE AND METHOD FOR HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - A data processing device in a high voltage direct current (HVDC) transmission system is provided. The data processing device includes a measurement module measuring a voltage or current for one or more points in the HVDC system; a data processing unit generating measurement data units using measurement values measured at the measurement module; and a communication module using wavelength division multiplexing to transmit the measurement data units to the outside through one optical fiber, wherein the optical fiber includes a plurality of cores. | 2015-11-19 |
20150333652 | DEVIATION COMPENSATION METHOD OF POTENTIAL TRANSFORMER - A deviation compensation method of a potential transformer is provided. The deviation compensation method includes: providing first to Nth potential transformers to be installed at different locations in a high voltage direct current (HVDC) transmission system; supplying a first voltage to the first to Nth potential transformers provided; measuring voltage values output through the first to Nth transformers by the first voltage supplied; determining whether there is a deviation between the measured voltage values; and determining compensation values for correcting the measured voltage values to the same voltage value when there is the deviation. | 2015-11-19 |
20150333653 | DEVIATION COMPENSATION METHOD OF POTENTIAL TRANSFORMER - A deviation compensation method of a potential transformer is provided. The deviation compensation method includes: detecting an output voltage value of a first potential transformer; checking a compensation value applied to the first potential transformer; compensating for the output voltage value based on the compensation value to measure an actual voltage value for a location at which the first potential transformer is installed; verifying the validity of the measured actual voltage value; and resetting a deviation compensator measuring the actual voltage value according to a result of verification on the validity of the actual voltage value. | 2015-11-19 |
20150333654 | MODULAR MULTI-LEVEL CONVERTER - Provided is a modular multi-level converter (MMC) including a plurality of sub-modules including switching elements, and a central control unit which assigns an address to each of the plurality of sub-modules for distinguishing each of the plurality of sub-modules, determines switching operation conditions of the plurality of sub-modules based on the assigned addresses, and outputs switching signals corresponding to the determined switching operation conditions. The central control unit determines a switching sequence of the plurality of the sub-modules according to the sequence of the assigned addresses. | 2015-11-19 |
20150333655 | VOLTAGE ADJUSTING APPARATUS - In a voltage adjusting apparatus connected in series to a system, an output of an AC/DC converter thereof is reduced. | 2015-11-19 |
20150333656 | METHOD FOROPERATING AN ELECTRICAL CIRCUIT AND ELECTRICAL CIRCUIT - A method for operating an electrical circuit, in particular of a converter is described. The circuit, in at least one embodiment, includes a line-side converter that is coupled to a capacitor. The line-side converter includes at least two series connections, each including at least two power semiconductor elements, and each of the at least two series connections being connected parallel to the capacitor. The line-side converter is coupled to an energy supply system. The DC voltage that is present at the capacitor is determined. A maximum voltage is predetermined. If the DC voltage present at the capacitor is determined to be greater than the maximum voltage, then at least two of the power semiconductor elements are switched into their conductive state in such a manner that the capacitor is discharged in the direction of the energy supply system. | 2015-11-19 |
20150333657 | INVERTER, METHOD FOR OPERATING AN INVERTER AND ENERGY SUPPLY INSTALLATION WITH AN INVERTER - The invention relates to an inverter with at least one DC input for connecting to an energy producing device and/or an energy store and with a multiphase AC output for connecting to a local energy distribution network, which is coupled to a likewise multiphase master energy supply network via a switching device. The inverter is characterised in that it has a control terminal for connecting to the switching device such that individual phases of the local energy distribution network can be selectively connected to or disconnected from corresponding phases of the energy supply network via the control terminal, and is intended, in the event of a network error of at least one but not all phases of the energy supply network, to separate, via the control terminal, the at least one defective phase of the energy supply network from the corresponding phase of the local energy distribution network and to supply the at least one separated phase of the local energy distribution network with network-compatible alternating voltage. The invention also relates to a method for operating such an inverter and to an energy supply installation with an inverter. | 2015-11-19 |
20150333658 | MULTI-LEVEL POWER CONVERTER - This is a multi-level converter comprising at least one arm (B) formed of n stages (Et | 2015-11-19 |
20150333659 | CIRCUIT ARRANGEMENT - A circuit arrangement for a multilevel power converter comprising a first and second circuit branches, electrically connected in parallel. The arrangement further comprises a positive, negative and neutral potential voltage connections, and first and second AC voltage connections. First circuit branch has controllable first, second and sixth electrical valves and third, fourth and fifth diodes. Second circuit branch has controllable third, fourth and fifth electrical valves and first, second and sixth diodes. In the invention, a power semiconductor switch is connected back-to-back in parallel with a diode provided in a conventional manner in first current branch so that sixth electrical valve is formed, and a power semiconductor switch is connected back-to-back in parallel with a diode provided in a conventional manner in second current branch so that fifth electrical valve is formed. The inventive circuit arrangement has reduced power losses. | 2015-11-19 |
20150333660 | CONVERTER FOR ELECTRIC POWER - The present invention relates to a converter for electric power having multiple sub-modules connected in series, the sub-modules having an energy storage unit and multiple power semiconductor circuits connected in parallel to the energy storage unit, and which causes an electric current to bypass a sub-module in case the breakdown of the sub-module occurs. To this end, the converter for electric power according to the present invention has multiple sub-modules connected to each other in series, the sub-modules having an energy storage unit and at least one power semiconductor circuit that is connected in parallel to the energy storage unit and comprises multiple power semiconductor switches and freewheeling diodes, wherein each of the sub-modules comprises a bypass switching unit, which is connected in parallel to any one of said at least one power semiconductor circuit, and bypasses an electric current via the bypass switching unit. | 2015-11-19 |
20150333661 | VIBRATION POWER GENERATOR - A vibration power generator in which an electret group including a plurality of electrets and an electrode group including a plurality of electrodes are displaced in a relative movement direction by an external vibration, and vibration power generation is thereby performed, has a housing portion that accommodates the electret group and the electrode group, a fixed member that is fixed to a bottom surface side of the housing portion and has one of the electret group and the electrode group as a fixed member-side power generation element, a movable member that is accommodated in the housing portion so as to be capable of relative movement by the external vibration while opposing the fixed member, and has the other of the electret group and the electrode group as a movable member-side power generation element, and a plurality of support members. | 2015-11-19 |
20150333662 | DEVICE FOR GENERATING A MOVEMENT, MOTOR COMPRISING SAID DEVICE AND USE OF THE LATTER - The invention provides a device for generating a movement, preferably a circular movement. The device comprises at least one magnet, a material which is arranged in the proximity of the magnet or in the magnet, on which material the magnet exerts an attractive force and in which the attractive force of the magnet is weakened by thermal action on at least one region of the material. The material is preferably not in superconductive state during the thermal action and preferably has paramagnetic properties prior to the thermal action and diamagnetic properties after the thermal action. | 2015-11-19 |
20150333663 | QUASI VARIABLE FREQUENCY MOTOR CONTROLLER - An apparatus for a quasi variable frequency motor controller is includes a DFC module that applies a first frequency to a motor as part of a discrete frequency control (“DFC”) method for motor starting. The first frequency includes a discrete frequency in a plurality of discrete frequencies of the DFC method and each discrete frequency includes a frequency lower than a fundamental frequency of an alternating current (“AC”) voltage source providing power to the motor. The apparatus includes a torque module that determines when motor torque generated by the motor reaches a negative torque threshold and a next frequency module that applies a second frequency to the motor in response to the torque module determining that the motor torque has reached the negative torque threshold. The second frequency is a next frequency in the DFC method. | 2015-11-19 |
20150333664 | Hand-Held Power Tool - A hand-held power tool includes a housing with a handle, a transmission, a drive motor, a tool receiver, and a first switch unit. The transmission and drive motor are arranged in the housing, the transmission being configured to transmit a torque generated by the drive motor to the tool receiver, which is configured to rotate about a rotation axis. The first switch unit is configured to control the drive motor, and has a first switching element and a second switching element that are configured to operate the first switch unit and that enable an operator to influence various control variables of the drive motor. The second switching element is further configured to control a direction of the rotation of the drive motor, and upon actuation, execute a linear movement that is substantially parallel to the rotation axis. | 2015-11-19 |
20150333665 | ELECTROMAGNETIC TYPE RETARDER WITH MULTI-FUNCTIONS - An electromagnetic retarder includes a stator yoke, a plurality of magnetic coils, and a steel rotor; a control device; a driving device for a high revolution region having transistors; and a driving device for a low revolution region having a battery, a diode for inhibiting reverse current, and transistors. The magnetic coils of each phase are coupled with capacitors so as to form a resonance circuit. Each of the transistors for the high revolution region is coupled in series to each of the multi-phase connections. Each of the transistors for the low revolution region is connected in series to each of the multi-phase connections through the battery and the diode. At the high revolution region, the magnetic coils are excited by an electric power obtained from a braking energy, and at the low revolution region, the magnetic coils are excited by an electric power obtained from the battery. | 2015-11-19 |
20150333666 | MULTI-BATTERY PACK FOR POWER TOOLS - A power tool including a motor, a first battery pack, a second battery pack, a first switching element coupled between the first battery pack and the motor, a second switching element coupled between the second battery pack and the motor, and controller coupled to the first switching element and the second switching element. The controller includes a first pulse-width modulation (PWM) output coupled to the first switching element and a first PWM signal to selectively close the first switching element. The controller further includes a second PWM output coupled to the second switching element and a second PWM signal to selectively close the second switching element. | 2015-11-19 |
20150333667 | ELECTRIC MOTOR DRIVING DEVICE - A decrease of inductance in a carrier frequency region being used is suppressed by connecting reactors capable of maintaining a fluctuation range of inductance within a predetermined range in the carrier frequency region in series to and between an inverter device converting electric power of an energy storage device and an electric motor. Consequently, the electric motor is controlled while an iron loss and an electromagnetic noise are reduced independently of characteristics of an iron material and a magnetic steel sheet material used as a core material of the electric motor. | 2015-11-19 |
20150333668 | VARIABLE FREQUENCY DRIVE ACTIVE HARMONIC MITIGATION CONTROLS AND DIAGNOSTICS - Variable frequency drive active harmonic mitigation controls and diagnostics are disclosed. Exemplary controls and diagnostics include operating a variable frequency drive including converting an AC input line voltage to a DC voltage, generating a motor drive signal using the DC voltage, and driving an electric motor with the motor drive signal. A harmonic mitigation signal is provided to the drive configured to at least partially mitigate harmonics during the operation of the drive. The harmonic mitigation signal is inhibited based upon presence of an error condition associated with the drive input. The inhibiting is terminated based upon the absence of the error condition. A diagnostic fault condition based upon a number of occurrences of the error condition. | 2015-11-19 |
20150333669 | HVAC ACTUATOR WITH SOFT STALL CONTROL - A actuator in a HVAC system includes a motor and a drive device driven by the motor. The drive device is coupled to a movable HVAC component for driving the movable HVAC component between multiple positions. The actuator further includes a main actuator controller that determines when the drive device is approaching an end stop and a pulse width modulation (PWM) speed controller that generates a PWM speed output for controlling a speed of the motor. The PWM speed controller sets the PWM speed output to zero in response to a determination that the drive device is approaching the end stop. The PWM speed controller then increases the PWM speed output until the end stop is reached, thereby causing the speed of the motor to increase as the drive device approaches the end stop. | 2015-11-19 |
20150333670 | SYNCHRONOUS MOTOR CONTROL DEVICE FOR ELECTRIC AUTOMOBILE - A synchronous motor control device for an electric vehicle is provided which is able to reduce torque ripple through simple calculation and is excellent in practicability. In a synchronous motor control device which controls a traction synchronous motor, torque ripple compensation unit is provided which adds, to a motor drive current, a sine-wave correction current whose phase is opposite to that of torque ripple which is generated in the motor and has a frequency which is six times that of a rotation speed of the motor. Specifically, in the case of a configuration including a vector control type basic controller, the torque ripple compensation unit outputs a correction current command iq_c, and a value iq_ref obtained by adding the correction current command iq_c to a q-axis current command is used for control. | 2015-11-19 |
20150333671 | ROTATING ELECTRIC MACHINE CONTROL SYSTEM - A rotating electric machine control system having a power control unit equipped with a voltage converter and a controller. The controller is equipped with an operation unit having a time corrector for obtaining time from first and second timers with reference to an ignition signal and correcting a relative time difference between the timers. The operation unit obtains electric angles at a preset cycle after correcting time. A communicator obtains electric currents and voltages when obtaining the electric angles for generating a communication frame, and outputs the communication frame to the operation unit via the multiplex communication line. The operation unit simultaneously performs an operation for controlling an inverter and a booster converter based on the obtained electric currents, the voltages, and the electric angles, for reducing the number of communication lines between the power control unit and the controller without compromising controllability of the voltage converter. | 2015-11-19 |
20150333672 | ROTATING ELECTRIC MACHINE CONTROL SYSTEM - A rotating electric machine control system has a power control unit (PCU) and a control section separately disposed therein. The apparatus receives a trigger signal from a communicator of the PCU via a trigger communication line from an MG ECU when the MG ECU obtains electric angles from a rotation sensor. The communicator, upon receiving an input of the trigger signal, generates a communication frame that includes plural detection values from a current sensor and a voltage sensor. Then, the communicator outputs the communication frame to the MG ECU via a multiplex communication line. The MG ECU performs a preset process for a control of an inverter and a booster converter based on the detected electric angles and the communication frame matching with those electric angles. | 2015-11-19 |
20150333673 | SENSORLESS DRIVE DEVICE, CONTROL METHOD AND PROGRAM FOR BRUSHLESS DC MOTOR - The purpose of the present invention is to reduce noise by controlling vibration due to rotation fluctuation, and to consume only current required for maintaining the rotation by bringing the current for driving a motor closer to a state of synchronization. A drive means drives a sensorless brushless DC motor by switching an energization pattern at a constant frequency to determine the rotation position of the rotor of the sensorless brushless DC motor. A detection means detects a zero-cross signal representing the switching of the phase of the rotor. A calculation means calculates a synchronization determination rate representing a percentage of the number of detected zero-cross signals. A pulse width control means controls the pulse width of a PWM drive duty in the drive means so that the calculated synchronization determination rate falls within a target range. | 2015-11-19 |
20150333674 | SEMICONDUCTOR DEVICE AND DRIVING SYSTEM - An output MOS transistor has a drain connected with a power supply and a source connected with an output terminal. The short-circuit MOS transistor has a source connected with the output terminal. The short-circuit MOS transistor is formed in a semiconductor substrate connected with the power supply. A switching device is formed in a semiconductor region which is formed in the semiconductor substrate, and contains a first diffusion layer connected with the gate of the output MOS transistor and a second diffusion layer formed in the semiconductor region and connected with the drain of the short-circuit MOS transistor. | 2015-11-19 |
20150333675 | METHODS AND SYSTEMS TO IMPROVE DC MOTOR COOLING FAN EFFICIENCY WITH PULSE WIDTH MODULATION FREQUENCY VARIATION - Methods, systems and a vehicle are provided for. The method provides for controlling pulse width modulation by a transistor based on the speed of a motor and a transfer function. The system includes a memory storing the transfer function, a transistor modulating an output current, a direct current power source providing the modulated output current to the motor via the transistor, a heat sink configured to absorb heat from the transistor and reflecting a transistor temperature, and a computing device, the computing device being configured to receive an electronic signal representing a desired speed of the motor and being configured to control the modulating input voltage, wherein the transistor produces the modulated output current at a switching frequency from the direct current power source based on the transistor temperature, and with a duty cycle based on the electronic signal as an input to the transfer function. | 2015-11-19 |
20150333676 | ELECTRONIC SWITCH CONTROLLER, ELECTRONIC SWITCH CONTROL METHOD, ELECTRONIC SWITCH AND ELECTRONIC DEVICE - An electronic switch controller, an electronic switch control method, an electronic switch and an electronic device are disclosed. The processor comprises voltage-stabilized power supplies, a processor and a driving circuit; the processor is connected between the voltage-stabilized power supplies and a measurement device to receive working parameters of the power supply, a load and the electronic switch measured by the measurement device, read duty cycle parameters matching with the working parameters, calculate a new duty cycle with the duty cycle parameters and the working parameters, adjust the current control signal to a PWM signal having the new duty cycle, and send the PWM signal to the driving circuit; and the driving circuit is connected between the voltage-stabilized power supplies and the load to control the rotation speed of the motor in the load. By reducing the volume of an electronic switch and achieving a long low-speed travel, the disclosure enables the user to work at an accurate working point with an electronic device. | 2015-11-19 |
20150333677 | WIND TURBINE HAVING IMPROVED OVERVOLTAGE PROTECTION - A wind turbine comprises a wind rotor, a generator driven by the wind rotor, a converter, wherein the generator and the converter generate electrical energy output via a connecting line with an inductively acting line reactor to a grid, and an overvoltage protection device comprising a plurality of different active modules, which are designed in such a way that they each effect, in different ways, a reduction in the voltage at the output of the converter, a switching matrix, which connects and disconnects the different active modules, and a selector comprising an overvoltage classifier, which is designed to select a predetermined stage depending on the overvoltage and to actuate the switching matrix in such a way that successive ones of the active modules are disconnected, wherein the overvoltage classifier defines a plurality of overvoltage ranges by virtue of in each case the selector setting different switching groups. | 2015-11-19 |
20150333678 | CONVERTER AND OPERATING METHOD THEREOF - A converter and an operation method thereof are provided. A converter interconnected with a wind power generation farm includes a power monitor unit configured to detect a direct-current voltage of an entire system interconnected with the converter, a control unit configured to compare the detected direct-current voltage of the entire system with a reference voltage and adjust an alternating-current voltage that is supplied to the wind power generation farm to a preset value, and a switching unit configured to perform a switching operation based on the adjusted preset value to convert alternating-current power into direct-current power. | 2015-11-19 |
20150333679 | Wound Field Synchronous Machine with Resonant Field Exciter - A brushless field exciter for wound synchronous machines that uses the resonance of the leakage inductance and a capacitor in a resonant field exciter to transfer energy to the rotating field winding. By resonating at frequencies greater than 50 kHz, this exciter reduces the overall size and weight of synchronous wound field motors at all power levels and extends the practical and economic power limits of synchronous wound field machines down to low integral and fractional HP applications, eliminating the permanent magnets now used in high efficiency motors and generators in that power range. | 2015-11-19 |
20150333680 | DUAL COIL GENERATOR - A vehicle electrical system comprises a generator which provides electrical power to an electrical load. The generator includes two field coils. A first switch circuit is coupled with the first field coil and a second switch circuit is coupled with the second field coil. A control device, included in the electrical system, operates the first and second switch circuits to regulate the generator output voltage and, in the alternative, to further reconfigure and/or deactivate the switch circuits based on their operating states. The generator maybe further coupled with an electrical energy absorbing device and the control device maybe further configured to operate on a switch, coupled with the electrical energy absorbing device, in response to a shutdown condition, RPM, rate of change of RPM, and voltage transient. | 2015-11-19 |
20150333681 | APPARATUS FOR CONTROLLING CONTROLLED VARIABLE OF ROTARY MACHINE TO COMMAND VALUE - In a control apparatus, an interference-reduction current calculator calculates, as an interference reduction current, a component of a current vector in a coordinate axis in a rotating coordinate system defined with respect to a rotor of the rotary machine. The current vector flows in the rotary machine, and the coordinate axis serves as an interference reduction coordinate axis in which the component of the current vector has reduced interference from change of the phase of the output voltage vector. An amplitude setter sets, as a manipulated variable for feedback controlling the interference reduction current to a command current value based on a command value for a controlled variable, one of: an amplitude of the output voltage vector, and an amplitude parameter indicative of a component of the output voltage vector. The component of the output voltage vector depends on the amplitude of the output voltage vector. | 2015-11-19 |
20150333682 | MOTOR CONTROL DEVICE - To achieve smooth switching of control without fluctuations in speed and torque, an excitation current command is allowed to transit linearly or in accordance with the function of speed between a value under sensorless vector control and a value under low-speed region control in accordance with a speed command or estimated speed in a speed region where the control is switched or in an adjacent speed region where sensorless vector control is performed. Therefore, abrupt variations in excitation current are reduced before and after the switching of the control. | 2015-11-19 |
20150333683 | MOTOR CONTROL APPARATUS AND MOTOR CONTROL METHOD - A motor control apparatus has an inverter that applies a voltage to an AC induction motor to be driven, a command value calculator that calculates a command value of an AC voltage outputted from the inverter based on a target motor torque of the AC induction motor, and an inverter controller that controls the inverter based on the command value of the AC voltage. The target motor torque of the AC induction motor includes a first target motor torque and a second target motor torque. A high speed response is required in the first target motor torque in order to at least suppress torsional vibration. The second target motor torque is a lower speed response than the first target motor torque. Delay processing is carried out for the second target motor torque. | 2015-11-19 |
20150333684 | LINEAR ACTUATOR FORCE MATCHING USING BACK EMF - A system includes a plurality of actuators configured to provide forces to an actuatable member to actuate the member between a first position and a second position during an actuation mode. The actuators are also configured to return the member from the second position to the first position during a retrace mode. The system also includes a controller configured to control the actuators. The controller is configured to identify a back electromotive force (BEMF) of each of the actuators during the retrace mode. The controller is also configured to responsively provide control signals to drive the actuators such that the forces provided by the actuators to the member during the actuation mode are substantially equal. | 2015-11-19 |
20150333685 | QUASI VECTOR MOTOR CONTROLLER - An apparatus includes a switch module that selectively turns on a switch to connect an input power conductor connected to a voltage source to a motor in a sequence. The switch for each phase is turned on for a portion of a cycle of a fundamental frequency of the voltage source. A source phase module determines a phase of the AC voltage source, a back-EMF phase module determines a phase of a back-EMF of the motor, and a torque module determines when a phase difference between the phase of the AC voltage source and the phase of the back-EMF is within a phase range indicative of a positive motor torque. A pulse module enables the switches in response to the phase difference having a phase within the phase range and disables the switches in response to the phase difference having a phase not in the phase range. | 2015-11-19 |
20150333686 | CURRENT CONTROL APPARATUS FOR THREE-PHASE ROTARY MACHINE - In an apparatus, a synchronizing unit synchronizes a measurement timing of values of first and second phase currents by a current sensor with a measurement timing of a rotational angle of a rotor by a rotational angle sensor. A current calculator calculates, based on the first and second parameter signals and the rotational angle of the rotor, values of two phase currents in a rotational coordinate system defined with respect to the rotor. A transmitter transmits the values of the two phase currents using a communication protocol. A controller communicates with the transmitter using the communication protocol to receive the values of the two phase currents. The controller controls the first phase current, the second phase current, and a third phase current flowing through respective first, second, and third phase windings of a three-phase rotary machine according to the values of the two-phase currents. | 2015-11-19 |
20150333687 | INVERTER DEVICE AND PWM SIGNAL CONTROL METHOD - A duty ratio calculation section ( | 2015-11-19 |
20150333688 | MOTOR CONTROL DEVICE AND METHOD FOR CONTROLLING THE SAME - When detecting an amount of noise current generated in an inverter and flowing into a noise filter, sampling the detection values with an interval of a carrier frequency, determining whether envelope curves of respective sampled values are deemed to be constant, and in a case where the envelope curves of the sampled values are deemed to be constant, the motor control device changes the carrier frequency to another frequency that does not overlap a cutoff frequency fr of the noise filter, or to another frequency that is not close to the cutoff frequency fr of the noise filter. Due to this configuration, even when the noise filter incorporated in the motor control device is a noise filter that is manufactured without demanding any special measures to be taken to the manufacturers and is manufactured with specifications of noise filter manufacturers, a desired noise reduction effect can be obtained. | 2015-11-19 |
20150333689 | POWER CONVERSION APPARATUS, POWER CONVERSION METHOD, AND MOTOR SYSTEM - An efficient and reliable power conversion method for converting an input voltage which is a single-phase AC voltage into output voltages forming a two-phase AC voltage includes: receiving an input voltage; designating, as a first target voltage representing consecutive target values of a first-phase output voltage and a second target voltage representing consecutive target values of a second-phase output voltage, AC voltages forming a two-phase AC voltage and having (i) an amplitude 1/√2 times smaller than an amplitude of the input voltage, and (ii) phase differences of +45 degrees and −45 degrees relative to the input voltage; and designating a frequency other than a frequency twice a frequency of the input voltage, as a frequency of the first target voltage and the second target voltage. | 2015-11-19 |
20150333690 | PHOTOVOLTAIC TILE - The invention concerns a photovoltaic tile free from wires and respective connectors for the electrical connections among tiles. The electrical connections are made by bushings integrated in the tiles, in the overlapping areas thereof, and electrically connected one to another by a removable pin connector. The assembly composes a roofing surface made of several equal or alike tiles, in case suitably interfaced, positioned on surfaces exposed to sun rays such as roofs, roofings or something else. The photovoltaic tile is provided with a frame made of plastic material with conventional means for fastening to the roof rafters and is characterized by means for a stable electrical and mechanical connection among adjacent tiles. | 2015-11-19 |
20150333691 | ELASTIC SHADING TEXTILE COMPRISING PHOTOVOLTAIC ELEMENTS, AND CORRESPONDING MULTIPLE GLAZING - A shading textile is characterized in that it comprises a plurality of strip-shaped photovoltaic lamellas which, aligned next to one another or spaced apart from one another in their longitudinal direction, form a continuous product by means of a yarn system, wherein the yarn system is designed to be elastic in at least one direction, so that by tensioning the shading textile, a spacing between adjacent photovoltaic elements can be varied perpendicular to the longitudinal direction. | 2015-11-19 |
20150333692 | Distributed Power Harvesting Systems Using DC Power Sources - A photovoltaic panel with multiple photovoltaic sub-strings including serially-connected photovoltaic cells and having direct current (DC) outputs adapted for interconnection in parallel into a parallel-connected DC power source. A direct current (DC) power converter including input terminals and output terminals is adapted for coupling to the parallel-connected DC power source and for converting an input power received at the input terminals to an output power at the output terminals. The direct current (DC) power converter optionally has a control loop configured to set the input power received at the input terminals according to a previously determined criterion. The control loop may be adapted to receive a feedback signal from the input terminals for maximizing the input power. A bypass diode is typically connected in shunt across the input terminals of the converter. The bypass diode functions by passing current during a failure of any of the sub-strings and/or a partial shading of the sub-strings. The bypass diode may be a single bypass diode connected across the parallel-connected DC power source. The DC power converter may convert the input power at high current to the output power at a lower current. The output terminals may be connectible with wire cables to a load, and the DC power converter is configured to reduce energy loss through the wire cables to the load. | 2015-11-19 |
20150333693 | METHOD AND APPARTUS FOR MEASURING SOLAR CELLS - A method of measuring solar cells, wherein a voltage (U) or a current (I) is applied to a solar cell, and a current (I) and voltage (U), respectively, resulting therefrom is measured, and wherein prior to applying the voltage (U) or current (I) and during or after measuring the resulting current (I) and resulting voltage (U), respectively, a relative distribution of radiation emitted across the solar cell surface area is measured, wherein the voltage (U) or current (I) is applied as at least one pulse with a predeterminable, constant value for a predeterminable period of time, wherein an energy value is calculated from the resulting current (I) and resulting voltage (U), respectively, wherein a first relative distribution of radiation emitted across the solar cell surface area is measured prior to the pulse or each pulse and a second relative distribution of radiation emitted across the solar cell surface area is measured during or after the pulse or each pulse, and wherein a difference distribution is generated from the first and second relative distributions and scaled to the calculated energy value. An apparatus for performing the method. The method and the apparatus serve for the improved sorting of solar cells. | 2015-11-19 |
20150333694 | CRYSTAL OSCILLATOR STARTUP TIME REDUCTION - A circuit includes a crystal oscillator to generate an output frequency for a circuit. A driving oscillator generates a startup signal having a driving frequency that is provided to activate the crystal oscillator. The driving frequency of the startup signal is varied over a range of frequencies that encompass the operating frequency of the crystal oscillator to facilitate startup of the crystal oscillator. | 2015-11-19 |
20150333695 | VOLTAGE CONTROLLED OSCILLATOR - A voltage controlled oscillator (VCO) comprising a first supply node, a second supply node, an oscillation transistor, a biasing network, an output node and a feedback network is described. The VCO is be powered by a supply voltage applied across the first and second supply nodes. The oscillation transistor and the biasing network are connected in series between the first supply node and the second supply node. The output node is connected to the oscillation transistor so as to deliver an oscillatory output signal. The feedback network provides an oscillatory feedback signal from the output node to the biasing network. The feedback network comprises a capacitive element and a transmission line connected in series for transferring the feedback signal. The VCO may be integrated in a radar device, for example. | 2015-11-19 |
20150333696 | System and Method for a Voltage Controlled Oscillator - In accordance with an embodiment, a voltage controlled oscillator (VCO) includes a VCO core having a plurality of transistors, a bias resistor coupled between collector terminals of the VCO core and a first supply node, and a varactor circuit coupled to emitter terminals of the VCO core. The bias resistor is configured to limit a self-bias condition of the VCO core. | 2015-11-19 |
20150333697 | CIRCUITS AND METHODS FOR INCREASING OUTPUT FREQUENCY OF AN LC OSCILLATOR - Disclosed are circuits and methods for increasing an output frequency of an inductance-capacitance (LC) oscillator. In some embodiments, the LC oscillator can be implemented as a voltage-controlled oscillator (VCO) having differential outputs. When the VCO is implemented on a die, wirebond connections from the outputs to a ground results in an effective inductance that impacts a maximum frequency associated with the VCO. An electrical connection such as a wirebond between the differential outputs yields a reduction in the effective inductance thereby increasing the maximum frequency. In some embodiments, the wirebond between the differential outputs can be configured so that its contribution to mutual inductance is reduced or substantially nil. | 2015-11-19 |
20150333698 | Method and Apparatus Having Enhanced Oscillator Phase Noise Using High Vt MOS Devices - A voltage-controlled oscillator (VCO), includes a resonator circuit connected to receive an input voltage and having a first output node and a second output node; and at least one cross-coupled switching circuit portion, each cross-coupled switching circuit portion comprising a first transistor having a drain connected to the first output node and a second transistor having a drain connected to the second output node, the first transistor having a gate connected between the drain of the second transistor and the second output node and the second transistor having a gate connected between the drain of the first transistor and the first output node, each of the first and second transistors having a threshold voltage that is determined to be the highest threshold voltage available for the process used to create the VCO. | 2015-11-19 |
20150333699 | VIBRATION GENERATING APPARATUS AND ELECTRONIC APPARATUS INCLUDING THE SAME - There are provided a vibration generating apparatus and an electronic apparatus including the same. The vibration generating apparatus includes: a housing having an internal space; an elastic member having both ends fixed to the housing so as to be elastically deformably disposed in the internal space; and a piezoelectric element mounted on one surface of the elastic member, wherein power is supplied to the piezoelectric element so that warpage of the piezoelectric element is only generated toward any one of one surface of the elastic member and the other surface of the elastic member, a surface opposite to the one surface of the elastic member. | 2015-11-19 |
20150333700 | AGGREGATED SPIN-TORQUE NANO-OSCILLATORS - A nano-oscillator magnetic wave propagation system has a group of aggregated spin-torque nano-oscillators (ASTNOs), which share a magnetic propagation material. Each of the group of ASTNOs is disposed about an emanating point in the magnetic propagation material. During a non-wave propagation state of the nano-oscillator magnetic wave propagation system, the magnetic propagation material receives a polarizing magnetic field. During a wave propagation state of the nano-oscillator magnetic wave propagation system, each of the group of ASTNOs initiates spin waves through the magnetic propagation material, such that a portion of the spin waves initiated from each of the group of ASTNOs combine to produce an aggregation of spin waves emanating from the emanating point. The aggregation of spin waves may provide a sharper wave front than wave fronts of the individual spin waves initiated from each of the group of ASTNOs. | 2015-11-19 |
20150333701 | Phase-Modulated Load Apparatus and Method - Methods and apparatus are provided to improve the efficiency of an outphasing amplifier through modulating the phase angle of a reflected signal in the outphasing amplifier. An outphasing amplifier includes a first amplifier and a second amplifier. A circulator is provided having a first port coupled to an output of the outphasing amplifier, a second port coupled to a load and a third port coupled to a phase shifter. The phase shifter is configured to provide a different phase angle of a reflected signal from the phase shifter to the outphasing amplifier through the circulator. | 2015-11-19 |
20150333702 | RADIO FREQUENCY AMPLIFYING CIRCUIT AND POWER AMPLIFYING MODULE - An radio frequency amplifying circuit includes an amplifying transistor configured to amplify a radio frequency signal input to a base of the amplifying transistor via a matching network to output the amplified radio frequency signal, a first bias transistor connected to the amplifying transistor based on a current-mirror connection to supply a bias to the amplifying transistor, and a second bias transistor connected to the base of the amplifying transistor based on an emitter-follower connection to supply a bias to the amplifying transistor. | 2015-11-19 |
20150333703 | VARIABLE SWITCHED DC-TO-DC VOLTAGE CONVERTER - A voltage converter can be switched among two or more modes to produce an output voltage tracking a reference voltage that can be of an intermediate level between discrete levels corresponding to the modes. One or more voltages generated from a power supply voltage, such as a battery voltage, can be compared with the reference voltage to determine whether to adjust the mode. The reference voltage can be independent of the power supply voltage. | 2015-11-19 |
20150333704 | Method for Class-B Amplifier Mismatch Correction - A calibration solution for a power amplifier array comprising a plurality of amplifier cells is presented that improves the linearity and efficiency of the power amplifier, especially when only a small number of the amplifier cells are active. To that end, a bias control word is selected from a predetermined bias table for each of the active power amplifier cells. An average of the selected bias control words is then used to bias an input stage of each active power amplifier cell. The solution presented herein provides techniques for determining the bias control words, as well as using the bias control words. | 2015-11-19 |
20150333705 | HIGH SPEED, RAIL-TO-RAIL CMOS DIFFERENTIAL INPUT STAGE - An apparatus is provided, comprising a single-ended input stage with signals IN_P & IN_N as input and OUT_P & OUT_N as output., wherein the differential input controlled by transistors P | 2015-11-19 |
20150333706 | RADIO FREQUENCY POWER AMPLIFIER CIRCUIT - An RF power amplifier circuit has an input terminal for receiving an input signal having an input power, and an output terminal for outputting an output signal. The RF power amplifier circuit comprises three amplifier stages and an input power splitter for providing respective power fraction signals to respective inputs of each amplifier stage. The input power splitter comprises a first input transmission line arranged between a first node and a second node, a second input transmission line arranged between a third node and a fourth node, and an electrical reactive element having a first terminal electrically connected to both the first and the second nodes, and a second terminal electrically coupled to a third one of the respective three inputs. | 2015-11-19 |
20150333707 | METHOD FOR HIGH-FREQUENCY AMPLIFIER USING POWER GAIN-BOOSTING TECHNIQUE - The present invention provides a power gain-boosting technique for an amplifier in order to compensate for the decrease of G | 2015-11-19 |
20150333708 | CLASS-D AMPLIFIER - In a class-D amplifier, oscillation phenomenon is suppressed in a high RF range and surge voltage is reduced. An oscillation absorption circuit is connected on the power supply side of the class-D amplifier circuit, and the class-D amplifier circuit and thus connected oscillation absorption circuit equivalently configure an oscillation circuit. Resistance provided in the oscillation absorption circuit is assumed as damping resistance of the oscillation circuit, thereby suppressing the oscillation phenomenon and reducing the surge voltage. The oscillation absorption circuit is made up of the RL parallel circuit of resistance and inductance. The oscillation absorption circuit and the class-D amplifier circuit constitute the oscillation circuit, and the resistance of the oscillation absorption circuit constitutes the damping resistance of the oscillation circuit in the high RF range. | 2015-11-19 |
20150333709 | POWER COMBINING CIRCUIT AND POWER COMBINING METHOD - A power-combining circuit at least equipped with: a plurality of amps, named first and second through n-th amps (PA | 2015-11-19 |
20150333710 | HIGH EFFICIENCY LINEARIZATION POWER AMPLIFIER FOR WIRELESS COMMUNICATION - A predistortion system for linearizing the output of a power amplifier includes a first signal representative of an RF modulated signal and a feedback signal representative of nonlinear characteristics of a power amplifier. The system also includes a predistortion controller, comprising at least one lookup table, adapted to receive the first signal and the feedback signal and to generate a correction factor for correcting the nonlinear characteristics of the power amplifier and combining logic which combines the RF modulated signal with a signal corresponding to the correction factor and supplies it to the power amplifier to linearize the output of the power amplifier. | 2015-11-19 |
20150333711 | TRANSMIT CIRCUIT, METHOD FOR ADJUSTING A BIAS OF A POWER AMPLIFIER AND METHOD FOR ADAPTING THE PROVISION OF A BIAS INFORMATION - A transmit circuit includes an envelope tracker configured to determine an envelope of a transmit signal and provide bias information based on the determined envelope of the transmit signal. The transmit circuit further includes a power amplifier configured to generate an RF output signal based on the transmit signal, a bias provider configured to provide a bias for the power amplifier based on the bias information, and an impedance determinator configured to determine a measure of a load impedance of a load coupled to an output of the power amplifier. The envelope tracker is configured to adapt the bias information based on the measure of the load impedance. | 2015-11-19 |
20150333712 | FOUR-STAGE CIRCUIT ARCHITECTURE FOR DETECTING PULSED SIGNALS - An electrical circuit includes a sensor configured to generate a current signal comprising a first portion comprising a contribution from a target source and/or a second portion comprising a contribution from sources other than the target source, a trans-impedance amplifier that amplifies the current signal and generate a low noise signal, and a high pass filter that converts the low noise signal into an AC signal having a positive amplitude, a negative amplitude, and a zero cross-over point between the positive and negative amplitudes. The circuit also includes a positive integrating amplifier that receives the positive amplitude of the AC signal and generates a positive integrated value over an integration period, and a negative integrating amplifier that receives the negative amplitude of the AC signal and generates a negative integrated value over the integration period. The circuit further includes at least one analog-to-digital converter that receives the integrated values. | 2015-11-19 |
20150333713 | CONTROL CIRCUIT FOR LOW NOISE AMPLIFIER AND RELATED DIFFERENTIAL AND SINGLE-ENDED AMPLIFICATION DEVICES - A circuit includes a first pair of transistors connected in parallel between a first node and a second node with a diode-connected transistor coupled to the second node. A second pair of transistors has current terminals connected at a third node. A first and second current sink transistors are connected in a current mirror configuration with the diode-connected transistor and further coupled to the third node. A first differential amplifier has an output coupled to control terminals of the first and third transistors and an input coupled to a further current node of the third transistor. A second differential amplifier has an output coupled to control terminals of the second and fourth transistors and an input coupled to a further current node of the fourth transistor. | 2015-11-19 |
20150333714 | Operational Amplifier - An operational amplifier comprises a first metal-oxide-semiconductor field effect transistor (MOSFET), comprising a first drain, a first gate and a first source; a second MOSFET, comprising a second drain, a second gate and a second source, the second source coupled to the first source of the first MOSFET; and a bias source, coupled between a first specific level and the first source of the first MOSFET and the second source of the second MOSFET; wherein the first MOSFET and the second MOSFET are depletion-type. | 2015-11-19 |
20150333715 | INSTRUMENTATION AMPLIFIER - An instrumentation amplifier includes: a first input stage configured to shift a level of a first input voltage applied to a first input terminal and to output the level-shifted voltage; a second input stage configured to shift a level of a second input voltage applied to a second input terminal and to output the level-shifted voltage; a first resistor configured to generate a differential current corresponding to a difference between the voltage output from the first input stage and the voltage output from the second input stage; a second resistor configured to convert the differential current into a first output voltage; a third resistor configured to convert the differential current into a second output voltage; a first output stage configured to output the first output voltage from a first output terminal; and a second output stage configured to output the second output voltage from a second output terminal. | 2015-11-19 |
20150333716 | METHOD AND APPARATUS FOR PERFORMING SIGNAL AMPLIFYING WITH AID OF SWITCHING CONTROL - A method and an apparatus for performing signal amplifying with aid of switching control are provided, where the method may include the steps of: modulating an input signal of a gain stage based on one of several modulation schemes to generate at least one first amplified result of a first amplifying path of the gain stage; modulating the input signal of the gain stage based on one of the several modulation schemes to generate at least one second amplified result of a second amplifying path of the gain stage; and generating an amplified signal of the gain stage based on at least the first amplified result and the second amplified result. In addition, at least one switching time point of the first amplifying path for switching between the several modulation schemes and one switching time point of the second amplifying path for switching between the several modulation schemes are non-overlapped. | 2015-11-19 |
20150333717 | METHODS AND APPARATUS FOR PROCESSING AUDIO SIGNALS - A method for processing an audio signal (i(t)), comprises: receiving a first set (x(t)) of time-varying signals representing a first sound comprised in the audio signal (i(t)), the first set (x(t)) of time-varying signals comprising an amplitude modulation signal (a(t)), a carrier frequency signal (f | 2015-11-19 |
20150333718 | RADIO RECEIVER - A baseband signal-conditioning architecture applicable to radio receivers uses switched-capacitor techniques to provide high-performance signal conditioning in low-voltage, deep-submicron processes (e.g., 65 nm and below). In the architecture, a first mixer is coupled to an antenna receiving the signal, and outputs a first mixer output signal based on the signal received by the antenna. A buffer coupled to an output of the first mixer outputs a buffer signal based on the first mixer output signal. A first charge pump is coupled to an output of the buffer, and produces a first charge pump output signal based on the buffer signal. In some examples, a second charge pump is coupled to the output of the first mixer and produces a second charge pump output signal based on the first mixer output signal, and the buffer input is coupled to an output of the second charge pump. | 2015-11-19 |
20150333719 | Volume Interactions for Connected Playback Devices - Methods and systems are provided for volume interactions for connected playback devices. In one example, a playback device applies a state variable update associated with the playback device. The playback device may be one of a plurality of playback devices, and the state variable update may indicate a limited volume range associated with the playback device. The playback device renders audio content in synchrony with other playback devices in the plurality of playback devices. The playback device receives input data indicating a group volume adjustment for the plurality of playback device and adjusts a playback volume of the playback device based on the group volume adjustment and the limited volume range. | 2015-11-19 |
20150333720 | NOISE FILTER AND HARNESS - A noise filter includes a filter device and a filter retainer. The filter device includes a device unit having at least one capacitor provided therein, an input side lead wire extending from the device unit, an output side lead wire extending from the device unit, and a ground connection portion provided on the device unit. The filter device forms the noise filter that uses a mutual inductance between the input side lead wire and the output side lead wire. The filter retainer has a holding structure configured to maintain an arrangement of the input side lead wire and the output side lead wire. The arrangement forms an overlapping section in which the lead wires are closely opposed to each other. The noise filter may be attached to a harness. | 2015-11-19 |
20150333721 | DYNAMICALLY DETECTING RESONATING FREQUENCIES OF RESONATING STRUCTURES - There is described herein a real-time scheme, implementable in software, hardware, or a combination thereof, to detect a resonating frequency of a structure from a sensed signal and dynamically set the center frequency of an adaptive compensator for effective attenuation of the resonating frequency. | 2015-11-19 |
20150333722 | COMMON MODE FILTER AND MANUFACTURING METHOD THEREOF - Disclosed are a common mode filter and a manufacturing method thereof. The common mode filter in accordance with an aspect of the present invention includes: a substrate; a filter layer including a coil and a dielectric layer and disposed on the substrate and configured to remove a signal noise; and a magnetic layer being laminated on the filter layer, and a surface of the filter layer being joined with the magnetic layer can be formed to be flat by having the coil embedded in a surface of the filter layer being joined with the magnetic layer in such a way that one surface of the coil is exposed. | 2015-11-19 |
20150333723 | PIN DIODE CIRCUIT AND PIN DIODE ATTENUATOR - A PIN diode circuit comprising a RF input coupled to a first junction point via a first DC blocking circuit and a constant voltage source coupled to the first junction point via a first DC feeding circuit, the constant voltage source configured to DC bias the first junction point. The PIN diode circuit further comprises a first PIN diode with an anode coupled to the first junction point and a cathode coupled to an anode of a second PIN diode via a second DC blocking circuit. The cathode of the second PIN diode is configured to be coupled to ground potential. The PIN diode circuit further comprises an adjustable voltage source coupled to a second junction point via a second DC feeding circuit. The second junction point is coupled to the cathode of the first PIN diode via a first resistor and is further coupled to the anode of the second PIN diode via a second resistor. | 2015-11-19 |
20150333724 | ORIENTATION AGNOSTIC MILLIMETER-WAVE RADIO LINK - Described herein are architectures, platforms and methods for implementing an orientation-agnostic millimeter-wave (mm-wave) antenna in a portable device. | 2015-11-19 |
20150333725 | IMPEDANCE MATCHING ELEMENT FOR VOLTAGE AND/OR CURRENT SENSING DEVICES - An impedance matching element is disclosed which can be used for voltage and/or current sensing or indicating devices used in medium voltage systems in order to improve signal integrity of output signals in comparison with known sensing devices. To enhance sensing accuracy and provide higher output signal immunity against interferences and impedance mismatches, the electric field sensor and/or the magnetic field sensor can be connected to the impedance matching element which allows connection to an independent analogue measuring device and is powered from an energy harvester, with an impedance matching electronic board. | 2015-11-19 |
20150333726 | APPARATUS AND A METHOD FOR ELECTROMAGNETIC SIGNAL TRANSITION - An apparatus and a method for electromagnetic signal transition, comprising the steps of receiving an electromagnetic signal having a first physical characteristic arranged to be compatible for the electromagnetic signal to be transmitted on a transmission structure, and transmitting the electromagnetic signal to a substrate integrated waveguide, wherein during the transmission of the electromagnetic signal to the substrate integrated waveguide, the first physical characteristic is converted to a second physical characteristic arranged to be compatible for the electromagnetic signal to be transmitted on the substrate integrated waveguide. | 2015-11-19 |
20150333727 | MEMS Component Having AlN and Sc and Method for Manufacturing a MEMS Component - A MEMS component includes a lower electrode. The MEMS component also includes an upper electrode. The upper electrode overlies the lower electrode. The MEMS component also includes a first piezoelectric layer between the lower electrode and the upper electrode. The first piezoelectric layer has a first piezoelectric material comprising AlN and Sc. | 2015-11-19 |
20150333728 | PIEZOELECTRIC COMPONENT - A piezoelectric component in which leakage of vibration is suppressed and vibration characteristics are excellent is provided. A piezoelectric component of the invention includes a support substrate; and a piezoelectric element mounted on the support substrate. The piezoelectric element includes electrodes (vibration electrodes) on one main surface and the other main surface of the piezoelectric element so that the electrodes have an area facing each other, and a concave area extending in a width direction of the piezoelectric element, in at least one of excepted areas which are areas other than the electrodes facing each other of the one main surface and the other main surface. At least part of corner portions of the concave area which extend in the width direction forms a curved surface. | 2015-11-19 |
20150333729 | PIEZOELECTRIC PACKAGE - Disclosed herein is a piezoelectric package including: a body having a piezoelectric component mounted therein and having a lower surface electrode provided on a bottom surface thereof, the lower surface electrode being electrically connected to the piezoelectric component; a groove part formed on the bottom surface of the body; and a capacitor component provided in the groove part and electrically connected to the piezoelectric component. | 2015-11-19 |
20150333730 | Wide-band acoustically coupled thin-film BAW filter - In a bulk acoustic wave (BAW) filter based on laterally acoustically coupled resonators on piezoelectric thin films, one can utilize two distinct acoustic plate wave modes of different nature, for example the thickness extensional (longitudinal) TE | 2015-11-19 |
20150333731 | ELASTIC WAVE ELEMENT WITH INTERDIGITAL TRANSDUCER ELECTRODE - An elastic wave device includes an interdigital transducer (IDT) electrode in contact with a piezoelectric substrate having a bus bar electrode region including one of a first bus bar electrode and a second bus bar electrode of the IDT electrode, an alternately disposed region where first electrode fingers are alternately disposed with second electrode fingers of the IDT electrode, and an intermediate region including one of the first electrode fingers and the second electrode fingers. A dielectric film is formed in at least part of the intermediate region and in contact with an upper surface of the IDT electrode. The dielectric film includes a medium in which an acoustic velocity of a transverse wave propagating in the dielectric film is lower than an acoustic velocity of a main elastic wave of the alternately disposed region. The dielectric film is not formed in the alternately disposed region. | 2015-11-19 |
20150333732 | COMPENSATION FILTER FOR CASCADED-INTEGRATOR-COMB DECIMATOR - The present invention is directed to systems and methods which provide an improved compensation filter, as may be used with respect to a decimator, optimally designed using a convex optimization approach. Compensation filters of embodiments of the invention may, for example, be used with respect to a CIC decimator. In accordance with embodiments of the invention, compensation filters are designed with minimum order to approximate target frequency response in the target frequency bands. Additionally or alternatively, compensation filters of embodiments are optimally designed for passband drop and stopband attenuation improvement, such as to satisfy the specified peak ripple in the passband and/or to satisfy the specified peak errors over a set of target sub-bands in the stopband. | 2015-11-19 |
20150333733 | Low Delay Modulated Filter Bank - The document relates to modulated sub-sampled digital filter banks, as well as to methods and systems for the design of such filter banks. In particular, the present document proposes a method and apparatus for the improvement of low delay modulated digital filter banks. The method employs modulation of an asymmetric low-pass prototype filter and a new method for optimizing the coefficients of this filter. Further, a specific design for a 64 channel filter bank using a prototype filter length of 640 coefficients and a system delay of 319 samples is given. The method substantially reduces artifacts due to aliasing emerging from independent modifications of subband signals, for example when using a filter bank as a spectral equalizer. The method is preferably implemented in software, running on a standard PC or a digital signal processor (DSP), but can also be hardcoded on a custom chip. The method offers improvements for various types of digital equalizers, adaptive filters, multiband companders and spectral envelope adjusting filter banks used in high frequency reconstruction (HFR) or parametric stereo systems. | 2015-11-19 |
20150333734 | Low Delay Modulated Filter Bank - The document relates to modulated sub-sampled digital filter banks, as well as to methods and systems for the design of such filter banks. In particular, the present document proposes a method and apparatus for the improvement of low delay modulated digital filter banks. The method employs modulation of an asymmetric low-pass prototype filter and a new method for optimizing the coefficients of this filter. Further, a specific design for a 64 channel filter bank using a prototype filter length of 640 coefficients and a system delay of 319 samples is given. The method substantially reduces artifacts due to aliasing emerging from independent modifications of subband signals, for example when using a filter bank as a spectral equalizer. The method is preferably implemented in software, running on a standard PC or a digital signal processor (DSP), but can also be hardcoded on a custom chip. The method offers improvements for various types of digital equalizers, adaptive filters, multiband companders and spectral envelope adjusting filter banks used in high frequency reconstruction (HFR) or parametric stereo systems. | 2015-11-19 |
20150333735 | BLOCK PARTITION TO MINIMIZE POWER LEAKAGE - Disclosed herein is a system to minimize power leakage. The system is configured to include a system-on-chip (SOC). The SOC is configured to include a Universal Serial Bus (USB) physical subsystem and system firmware, wherein the system firmware conveys USB related events to the SOC. The system is configured to include a power management apparatus, where the power management apparatus includes USB wake functionality and USB On-the-Go (OTG) functionality. | 2015-11-19 |
20150333736 | METHOD AND CIRCUIT FOR TEMPERATURE DEPENDENCE REDUCTION OF A RC CLOCK CIRCUIT - A method and a circuit for generating a clock signal from a clock integrated circuit are introduced herein. A compensation voltage is generated according to a temperature coefficient of a resistor and a clock period of a clock circuit, where the compensation voltage is resistor-corner independent. The clock period of the clock circuit is determined by the resistor and at least one capacitor of the clock circuit. The temperature dependence of the clock period of the clock circuit is reduced according to the compensation voltage. | 2015-11-19 |
20150333737 | Control Circuit for a Gate Driver Circuit, Operating Method Thereof and Display Device - The present invention discloses a control circuit for a gate driver circuit, an operating method thereof and a display device comprising the control circuit, the control circuit includes: a detection circuit, a power supply and a charge pump circuit, wherein, the detection circuit is used to generate a digital control signal corresponding to an ambient temperature based on the ambient temperature of the gate driver circuit, the power supply is used to supply an initial voltage to a pump charge circuit and the pump charge circuit is used to adjust the initial voltage based on the digital control signal to generate a driving voltage, and output the driving voltage to the gate driver circuit. By enabling the driving voltage to be dynamically adjustable, the power consumption of the gate driver circuit is reduced, and the life of the thin film transistor in the gate driver circuit is lengthened. | 2015-11-19 |
20150333738 | Integrated Circuit Process and Bias Monitors and Related Methods - An integrated circuit device can include at least one oscillator stage having a current mirror circuit comprising first and second mirror transistors of a first conductivity type, and configured to mirror current on two mirror paths, at least one reference transistor of a second conductivity type having a source-drain path coupled to a first of the mirror paths, and a switching circuit coupled to a second of the mirror paths and configured to generate a transition in a stage output signal in response to a stage input signal received from another oscillator stage, wherein the channel lengths of the first and second mirror transistors are larger than that of the at least one reference transistor. | 2015-11-19 |
20150333739 | LOW LATENCY GLITCH-FREE CHIP INTERFACE - A scheme is described that provides for a low latency, glitch free chip interface that does not require a clock. This invention handles input transitions that are skewed and also input transitions that are momentary. A change in an input state initiates a pulse that propagates through the system and samples the new input state after a delay. If there is a difference between the sampled input state and the present input state, then a new pulse is initiated in order to avoid any illegal transitions at the output. | 2015-11-19 |