Patents Examined by Ryan Johnson
  • Patent number: 10998766
    Abstract: A computer including a processor is programmed to determine that an object including ferrous material is in a charging field of an inductive charger, actuate the inductive charger, and determine a temperature of the object. The processor is further programmed to determine, based on the temperature, whether the inductive charger is operational.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: May 4, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 10992303
    Abstract: The system includes an intermediate-frequency (IF) synthesizer that generates an IF signal based on a reference signal, and a sub-sampling PLL (SSPLL) that generates a high-frequency output signal based on an input. A switch selects either the reference signal or the IF signal to be the input to the SSPLL. When the reference signal is the input to the SSPLL, the frequency synthesizer operates in a low-noise normal-operating mode, and when the IF signal is the input to the SSPLL, the frequency synthesizer operates in a higher-noise, frequency-acquisition mode. A sub-sampling lock detector (SSLD) determines whether the frequency synthesizer becomes unlocked during the normal-operating mode, and if so, activates the switch to move the system into the frequency-acquisition mode. It also determines whether the frequency synthesizer becomes relocked to the target frequency during the frequency-acquisition mode, and if so, activates the switch to move the system into the normal-operating mode.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: April 27, 2021
    Assignee: The Regents of the University of California
    Inventors: Hao Wang, Omeed Momeni
  • Patent number: 10992306
    Abstract: A self-start-up control circuit adaptable to an oscillation circuit includes a state circuit that generates a reset signal according to a level of a control voltage for a voltage-controlled oscillator (VCO) of the oscillation circuit; and a start-up circuit that starts up the VCO by generating an enable signal according to the reset signal.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: April 27, 2021
    Assignee: Himax Technologies Limited
    Inventor: Chun Hung Wang
  • Patent number: 10992484
    Abstract: Power management techniques in distributed communication systems in which the power available at a remote unit (RU) is measured and compared to the power requirements of the RU. Voltage and current are measured for two dummy loads at the RU and these values are used to solve for the output voltage of the power supply and the resistance of the wires. From these values, a maximum power available may be calculated and compared to power requirements of the RU.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: April 27, 2021
    Assignee: Corning Optical Communications LLC
    Inventors: Ami Hazani, Guy Lupescu, Ofer Nisan
  • Patent number: 10978917
    Abstract: A converter (200) for converting a received radio frequency signal into a DC signal for powering a load (300). The converter (200) comprises a first rectifying arm (207) for generating a DC signal based on a first RF voltage input obtained from the received RF signal. A second rectifying arm (209) generates a DC signal based on a second RF voltage input obtained from the received RF signal. The received RF signal provides the voltage difference between the first RF voltage input and the second RF voltage input.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 13, 2021
    Assignee: Drayson Technologies (Europe) Limited
    Inventors: Vitor Freitas, Bruno Franciscatto
  • Patent number: 10976369
    Abstract: A load test system performs a load test of an emergency generator. The load test system includes a plurality of chargers having an AC/DC conversion function being connected in parallel, to which AC power generated from an emergency generator is inputted, and a storage battery to which AC power inputted to the plurality of chargers having the AC/DC conversion function being connected in parallel is converted into DC power of a predetermined output voltage and then inputted at an input voltage being set to substantially the same value as or lower than the output voltage.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 13, 2021
    Assignee: TATSUMI RYOKI CO., LTD
    Inventor: Toyoshi Kondo
  • Patent number: 10972050
    Abstract: A temperature- and voltage-independent oscillator circuit including a bias circuit configured to generate a reference voltage based on a reference current and a bias resistor; a signal generator circuit configured to generate a bias current based on the reference current, and generate an oscillation signal by repeatedly charging a capacitor using the bias current, and discharging the charged capacitor; and a control circuit configured to control the charging of the capacitor and the discharging of the charged capacitor based on the reference voltage and a voltage of the oscillation signal, wherein a period of the oscillation signal is determined by a resistance value of the bias resistor and a capacitance value of the capacitor.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: April 6, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Tae Ho Lim
  • Patent number: 10964777
    Abstract: Integrated circuits such as multi-channel receivers may require loop inductors resistant to electromagnetic field interference. Such loop inductors may include multiple non-overlapping loops each defining a corresponding dipole, the multiple dipoles summing to zero, with at least one of said loops having unequal areas. The multiple non-overlapping loops may include: a center loop defining a central magnetic dipole; and a plurality of peripheral loops equally spaced around a perimeter of the center loop, each peripheral loop defining a peripheral magnetic dipole oriented opposite the central magnetic dipole, the plurality of peripheral loops substantially canceling a field from the central magnetic dipole. The total number of loops may be odd, with particular embodiments of three, five, and seven loop designs disclosed. Single and multi-turn embodiments are provided.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: March 30, 2021
    Assignee: Credo Technology Group Ltd.
    Inventors: Xike Liu, Kuan Peng, Chan Ho Yeung, Yifei Dai, Lawrence Chi Fung Cheng, Runsheng He
  • Patent number: 10963032
    Abstract: A power supply and a method to provide power to a load via a power delivery network are presented. The power delivery network adds a pole and/or zero to a transfer function of the power supply. The power supply has a feedback unit to sense a load voltage at the load and to provide a feedback voltage which is indicative of the load voltage. The power supply has an input amplifier provides an error voltage based on the feedback voltage. The power supply has a power converter to provide power to the power delivery network depending on the error voltage. The power supply has an equalization unit to add a zero and/or a pole to the transfer function of the power supply, such that the pole and/or zero of the power delivery network is partially compensated. The equalization unit is located between an input amplifier and a power converter.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: March 30, 2021
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Frank Kronmueller, Mark Childs, Ahmed Shaban
  • Patent number: 10958106
    Abstract: A control device controls a power transmission driver that transmits power to a power receiving device including a rectifier circuit that is connected to a secondary coil and generates a rectified voltage, by outputting a drive signal to a primary coil. The control device switches the drive mode of the power transmission driver between a full-bridge drive mode and a half-bridge drive mode according to the rectified voltage.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: March 23, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kinya Matsuda
  • Patent number: 10958251
    Abstract: Methods and systems are described for generating multiple phases of a local clock at a controllable variable frequency, using loop-connected strings of active circuit elements. A specific embodiment incorporates a loop of four active circuit elements, each element providing true and complement outputs that are cross-coupled to maintain a fixed phase relationship, and feed-forward connections at each loop node to facilitate high frequency operation. A particular physical layout is described that maximizes operating frequency and minimizes clock pertubations caused by unbalanced or asymmetric signal paths and parasitic node capacitances.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: March 23, 2021
    Assignee: KANDOU LABS, S.A.
    Inventors: Armin Tajalli, Yohann Mogentale, Fabio Licciardello
  • Patent number: 10944360
    Abstract: A local oscillator of the present invention includes: a frequency generator for outputting first and second sinusoidal signals having the same frequency but mutually different phases; a phase detector for outputting either a positive or a negative voltage depending on whether a phase difference between the first and second sinusoidal signals output from the frequency generator is greater than a reference phase difference; and a comparator for outputting a comparison result between a voltage output from the phase detector and a reference voltage, or a comparison result between the voltage output from the phase detector and a voltage obtained by inverting the polarity of the voltage, in which the frequency generator controls the phase of the first sinusoidal signal so that the phase difference approaches the reference phase difference by using the comparison result output from the comparator, enabling generating IQ signals having higher phase accuracy than conventional local oscillators.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: March 9, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akihito Hirai, Mitsuhiro Shimozawa
  • Patent number: 10938305
    Abstract: The present invention reduces conducted noise of an input current in a power supply device having a plurality of channels at low cost. In a power supply circuit (210) possessed by an autonomous running control ECU, switching circuits 22 respectively generate, on the basis of control signals C, power supplies supplied to a plurality of logic circuits. A transition management unit 25 controls the switching circuits 22. A clock generation unit 26 generates a plurality of clock signals. The transition management unit 25 has a control signal generation unit and a plurality of delay units. The control signal generation unit generates intermediate control signals from the clock signals generated by the clock generation unit 26. The delay units delay the intermediate control signals on the basis of command signals and output the delayed intermediate control signals as the control signals C. The clock signals generated by the clock generation unit include at least one clock signal having a different frequency.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: March 2, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroshi Shinoda, Ming Liu, Hideyuki Sakamoto
  • Patent number: 10938393
    Abstract: An oscillator is configured to generate a signal with a frequency sweep, the oscillator having circuitry comprising a set of capacitors, each capacitor of the set of capacitors being switchably connectable in parallel in the circuitry so that the frequency of the signal has an intrinsic dependence on the number of the capacitors connected, a shift register controllable by a clock line and comprising a number of bits, each bit of the number of bits controlling connection of a respective capacitor of the set of capacitors so that the capacitors are connectable or disconnectable in a pre-determined order by shifting, respectively, activation or de-activation bits into the shift register, wherein the shifting is paced by the clock line; and a clock signal generator configured to output a clock signal with a time modulation on the clock line.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 2, 2021
    Assignee: Stichting IMEC Nederland
    Inventors: Wilfried Zomagboguelou, Paul Mateman, Yao-Hong Liu
  • Patent number: 10931234
    Abstract: A small area oscillator circuit is provided. The oscillator circuit includes first and second constant current sources, a comparator, first and second capacitive elements, and a resistive element. In a first state, the first capacitive element is connected to the first constant current source and the fixed voltage node, the second capacitive element is connected to the second constant current source and the first current source, and resistive element is connected to the second constant current source. In a second state, the first capacitive element is connected to the second constant current source and first constant current source, the second capacitive element is connected to the second constant current source and the fixed voltage node, and the resistive element is connected to the first constant current source.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: February 23, 2021
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Noriaki Matsuno
  • Patent number: 10931231
    Abstract: A variable frequency oscillator circuit for generating an oscillating signal of a desired frequency, comprising a fixed frequency oscillator; one or more frequency dividers, arranged to receive the output of the fixed frequency oscillator and generate a signal with a divided frequency; and one or mixers, arranged to mix the outputs of the one or more frequency dividers to generate the oscillating signal of the desired frequency. The variable frequency oscillator circuit is arranged to modify the operation of the one or more mixers to suppress any unwanted signals in the generated oscillating signal.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: February 23, 2021
    Assignee: BAE SYSTEMS plc
    Inventor: Philip Charles Jarrett Pring
  • Patent number: 10930430
    Abstract: A coil assembly for generating or for receiving alternating magnetic fields comprises at least one primary coil having at least one winding and comprises at least one secondary coil provided for a selective influencing of the resonance behavior of the coil assembly and having at least one winding, wherein the primary coil has a main conductor and a shielding conductor at least sectionally surrounding the main conductor. The shielding conductor is electrically conductively connected to the main conductor and has at least one section that is electrically interrupted.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: February 23, 2021
    Assignee: etaEM GmbH
    Inventor: Stephan Eder
  • Patent number: 10919407
    Abstract: A vehicle power system includes a power converter including one or more phase leg lines and a negative rail line. The system also includes a controller that operates the power converter to flow current through some of the phase leg lines and the negative rail line to output DC power, and operates the power converter to flow current through the some of the phase leg lines and not the negative rail line to output AC power.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: February 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Xi Lu, Ke Zou, Krishna Prasad Bhat, Michael W. Degner
  • Patent number: 10916948
    Abstract: A power control apparatus has a switch configured to interrupt power supply from a system power when the switch has detected a drop of voltage from the system power below a threshold, a first power controller configured to receive a voltage drop signal supplied from the switch unit, a first power storage unit connected to the first power controller, a second power controller configured to receive a discharge start signal supplied from the first power controller, a second power storage unit connected to the second power controller, and a rotary machine generator that receives an operation control signal supplied from the second power controller or the second power storage unit.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: February 9, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Koji Umetsu
  • Patent number: 10917077
    Abstract: A device includes a plurality of phase accumulators, a multiplexer, and an oscillator. The plurality of phase accumulators is configured to receive a plurality of frequencies and generate a plurality of ramp signals. The multiplexer is configured to receive the plurality of ramp signals from the plurality of phase accumulators and to select one ramp signal from the plurality of ramp signals. The oscillator is configured to receive the one selected ramp signal and to generate one amplitude signal associated therewith. The plurality of phase accumulators continues generating their respective ramp signal. The multiplexer subsequent to selecting the one ramp signal is configured to select another ramp signal associated with another one phase accumulator of the plurality of phase accumulators. The oscillator is further configured to receive the selected another ramp signal and to generate another amplitude signal associated therewith.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: February 9, 2021
    Assignee: XILINX, INC.
    Inventors: Ali Boumaalif, John E. McGrath