Patents Examined by Joseph Chang
  • Patent number: 10439623
    Abstract: The present disclosure relates to an injection locked oscillator system and processes and, more particularly, to structures and processes for generating an inductor-less frequency multiplier using injection locking and histogram calibration with a back-gate process. The structure includes injection locked oscillator (ILO) system which is structured to provide a local oscillator (LO) and a Digitally Controlled Oscillator (DCO) or Voltage Controlled Oscillator (VCO) frequency which is not harmonically related by an integer multiple to an output frequency.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: October 8, 2019
    Inventors: Stephen Allott, Julian Jenkins
  • Patent number: 10439399
    Abstract: A power system including a rectifier and an inverter. The rectifier has a plurality of phase input terminals and a plurality of rectifier output terminals that provide respective rectified outputs, rectifier circuitry that rectifies the signals on the phase input terminals to generate respective rectified outputs on the rectifier output terminals, a rectifier neutral to receive a power source neutral, and capacitors connected between the rectifier neutral and the rectifier output terminals. The inverter includes a respective plurality of inverter input terminals respectively connected to the rectifier output terminals, a plurality of inverter output terminals, and an inverter neutral. The rectifier neutral and the inverter neutral are coupled by a conductor to form a same neutral.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: October 8, 2019
    Assignee: Google LLC
    Inventors: Sangsun Kim, Anand Ramesh, Scott Aldous, John Zipfel
  • Patent number: 10433197
    Abstract: A battery powered node within a wireless mesh network maintains a mapping between temperature and oscillator drift and compensates for oscillator drift based on this mapping. When the mapping includes insufficient data points to map the current temperature to an oscillator drift value, the battery powered node requests calibration packets from an adjacent upstream node in the network. The adjacent node transmits two calibration packets with a transmit time delta and also indicates this time delta in the first calibration packet. The battery powered node receives the two calibration packets and measures the receive time delta. The battery powered node compares the transmit time delta to the receive time delta to determine oscillator drift compared to an oscillator in the adjacent node. The battery powered node then updates the mapping based on the current temperature and determined oscillator drift.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: October 1, 2019
    Inventors: Kamal Poorrezaei, Brandon Inberg
  • Patent number: 10432142
    Abstract: A voltage-controlled oscillator (VCO) having an LC tank circuit with a variable inductance is disclosed. In one embodiment, the VCO includes a capacitance, at least a portion of which is variable and responsive to a first tuning voltage. The VCO further includes a transformer having first (primary) and second (secondary) windings. The primary winding is coupled to the capacitance, and provides the inductance of the LC tank circuit. The secondary winding is coupled to a current control circuit. The current control circuit may vary the induced current through the secondary winding. By varying the induced current through the secondary winding, the effective inductance of the primary winding may also be varied. Accordingly, the VCO may be tuned by varying the inductance of the LC tank circuit, as well as by varying the capacitance of the same.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: October 1, 2019
    Assignee: Oracle International Corporation
    Inventors: Phillip Kwan, Xiaolei Li, Frankie Y. Liu, Ziad Shehadeh
  • Patent number: 10425039
    Abstract: A frequency calibrator includes an input signal generator configured to generate an input signal based on an oscillation signal and an external signal; a frequency difference extractor configured to extract, from the input signal, a frequency difference signal having a frequency corresponding to a frequency difference between an external frequency of the external signal and an oscillation frequency of the oscillation signal; a divider configured to generate a division signal by dividing a signal having the oscillation frequency by a division ratio; and a frequency tuner configured to tune the oscillation frequency of the oscillation signal based on a result of comparing the frequency difference signal to the division signal.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: September 24, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seok Ju Yun
  • Patent number: 10419009
    Abstract: The variation of the oscillation frequency of an oscillator can be suppressed even in the case where the amount of interference with the oscillator accompanied by an amplifying operation of a power amplifier and the polarity are not constant. An oscillator is configured to be capable of oscillating at an oscillation frequency in accordance with control signals Vcont and FREQ_CTRL. A phase locked loop allows the oscillator to output an oscillation signal Vout in synchronization with a reference signal RELCLK using the control signal Vcont. A power amplifier amplifies the electric power of the oscillation signal Vout. A variation detection unit detects a variation with respect to the time change of the control signal Vcont after an amplifying operation is started by the power amplifier causing 3interference with the oscillator.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: September 17, 2019
    Inventor: Kenichi Shibata
  • Patent number: 10411647
    Abstract: A voltage controlled oscillator includes a resonator and an amplifier. The resonator includes a capacitive element and an inductive element. The inductive element has a plurality of conductive segments forming a physical loop. The inductive element has electrical connections on the physical loop to the plurality of conductive segments forming at least one electrical loop disposed within an interior space formed by the physical loop. The amplifier has an input and an output, the input coupled to a first conductive segment forming a first impedance and the output coupled to a second conductive segment forming a second impedance.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: September 10, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Michael L. Bushman, Charles J. Duey, James W. Caldwell
  • Patent number: 10411683
    Abstract: A TDC measures a time difference between delay time that is in accordance with voltage variations. A DCO 155 generates an oscillation signal having a cycle that is in accordance with an input signal. A frequency divider 156 generates a divided signal by dividing the oscillation signal. An adder 154 inputs, to the DCO 155, a signal obtained by adding a second signal that changes an oscillation cycle of the DCO 155 in accordance with the time difference measured by the TDC to a first signal that is in accordance with a phase difference between the divided signal and a reference signal. A control circuit 11 obtains a measurement time resolution of the TDC and matches a cycle modulation time resolution of the DCO 155 with the measurement time resolution of the TDC.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: September 10, 2019
    Inventor: Tetsutaro Hashimoto
  • Patent number: 10411648
    Abstract: The present invention concerns an electronic oscillator comprising: an LC resonant circuit comprising an inductive component and a capacitive component, the LC resonant circuit being connected to a first reference voltage node and to an oscillator output node; a first transistor connected to the oscillator output node and arranged to periodically operate in a conducting state and a non-conducting state; and a phase shift circuit. A phase shift circuit output is connected to the first transistor, while a phase shift circuit input is connected by a first feedback circuit to the oscillator output node. The phase shift circuit comprises a signal phase shifter for shifting the phase of a first feedback signal from the first feedback circuit by substantially 180 degrees.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: September 10, 2019
    Assignee: EM Microelectronic-Marin SA
    Inventors: Tu Cao-Thong, Mario Dellea
  • Patent number: 10404210
    Abstract: A cavity oscillator comprising: an amplifier operable to provide energy to a local oscillating signal; a superconducting resonant cavity arranged to receive the local oscillating signal and being operable to reflect a portion of the local oscillating signal for use in a feedback circuit, to support an electromagnetic wave related to the local oscillating signal in a desired TM mode, and to output a filtered signal of a desired frequency or frequencies based on the geometry of the cavity; a feedback circuit operable to generate an error signal based on the local oscillating signal and the reflected signal; and a phase shifter arranged operable to adjust the filtered signal based on the error signal to generate an adjusted filtered signal. The amplifier can amplify the adjusted filtered signal.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: September 3, 2019
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: Lee Lemay, Eric Bozeman, Kari Moran, Teresa Emery-Adleman, Anirudha Siripuram
  • Patent number: 10396712
    Abstract: A transformer feed-back quadrature voltage controlled oscillator (QVCO) includes a first VCO; a second VCO; and a dynamic phase error correction circuit, having a plurality of coupling capacitors connected between the first and second VCOs, wherein the capacitances of the coupling capacitors are varied according to a digital control signal to correct a phase error of local oscillating (LO) signals of quadrature phases output by the first and second VCOs.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: August 27, 2019
    Inventors: Hsiao-Chin Chen, Yen-Ting Chiang, Chien-Te Yu
  • Patent number: 10389178
    Abstract: Disclosed are DC-to-AC converter control methods, ground assemblies and wireless power transfer methods using the same. A method for controlling a DC-to-AC converter of a ground assembly used for wireless power transfer, which includes first, second, third, and fourth switches arranged in a form of a bridge circuit between a power source and a primary coil, may comprise detecting a current flowing through the primary coil at a rising edge of an output voltage signal of the DC-to-AC converter; determining whether a strength of the current is at a negative level which falls within a predetermined reference range; and in response to a determination that the current is not at the negative level, changing switching frequencies of the DC-to-AC converter.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: August 20, 2019
    Assignee: Hyundai Motor Company
    Inventors: Woo Young Lee, Hyun Wook Seong, Gyu Yeong Choe
  • Patent number: 10379587
    Abstract: Various embodiments provide techniques and devices for scheduling power loads in devices having multiple batteries. Loads are characterized based on the power required to serve them. Loads are then assigned to batteries in response to the type of load and relative monitored characteristics of the batteries. The monitored battery characteristics can change over time. In some embodiments, stored profile information of the batteries can also be used in scheduling loads. In further embodiments, estimated workloads can also be used to schedule loads.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: August 13, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Bojun Huang, Julia L Meinershagen, Thomas Moscibroda, Stephen E. Hodges, Ranveer Chandra
  • Patent number: 10374449
    Abstract: A smart electronic system is disclosed. The system can analyze any input voltage to determine whether the input voltage is sufficient to charge the battery of an electronic device and/or to operate the electronic device. If not, the cable is capable of transforming the input voltage to a voltage sufficient to charge and/or operate. The electronic device may be incorporated into the housing of the smart electronic system, and can be any known mobile devices.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: August 6, 2019
    Assignee: Societe BIC
    Inventors: Steve Burkhart, Gerard F. McLean, Jean-Louis Iaconis
  • Patent number: 10367451
    Abstract: The present invention provides a temperature-compensated crystal oscillator based on digital circuit, a closed-loop compensation architecture is employed to realize the high precision compensation of the crystal oscillator. The output frequency f(T) of the TCXO to be compensated is directly connected with the compensation voltage Vc(T) in real time, and the compensation voltage is fed back to the voltage control terminal of the VCXO to be compensated to compensate, so that the output frequency after compensation is equal to the target frequency signal, thus avoiding the frequency shift of output signal caused by temperature hysteresis, i.e. the discrepancy between the temperature acquired by a temperature sensor and the real temperature of the resonant wafer in the prior art.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: July 30, 2019
    Inventors: Peng Ye, Feng Tan, Xingqi Liu, Duyu Qiu, Lianping Guo, Kuojun Yang, Qinchuan Zhang, Huiqing Pan
  • Patent number: 10367367
    Abstract: An electronic watch charging device includes a body, a charging assembly configured to engage and inductively charge an electronic watch, and an adapter mechanically coupled to the body and electrically coupled to the charging assembly receptacle, the adapter being configured to be coupled to a power supply.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: July 30, 2019
    Inventor: Keith A. Jacobs
  • Patent number: 10364144
    Abstract: Disclosed examples provide gas cells and a method of fabricating a gas cell, including forming a cavity in a first substrate, forming a first conductive material on a sidewall of the cavity, forming a glass layer on the first conductive material, forming a second conductive material on a bottom side of a second substrate, etching the second conductive material to form apertures through the second conductive material, forming conductive coupling structures on a top side of the second substrate, and bonding a portion of the bottom side of the second substrate to a portion of the first side of the first substrate to seal the cavity.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: July 30, 2019
    Inventors: Juan Alejandro Herbsommer, Adam Joseph Fruehling, Simon Joshua Jacobs
  • Patent number: 10355702
    Abstract: A hybrid PLL is provided that includes an digital integral path and an analog proportional path.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: July 16, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Zhuo Gao, Bupesh Pandita, Eskinder Hailu
  • Patent number: 10352904
    Abstract: A micro-electrical-mechanical system (MEMS) resonator device includes a top side electrode overlaid with an interface layer including a material having a surface (e.g., gold or other noble metal, or a hydroxylated oxide) that may be functionalized with a functionalization (e.g., specific binding or non-specific binding) material. The interface layer and/or an overlying blocking material layer are precisely patterned to control locations of the interface layer available to receive a self-assembled monolayer (SAM), thereby addressing issues of misalignment and oversizing of a functionalization zone that would arise by relying solely on microarray spotting. Atomic layer deposition may be used for deposition of the interface layer and/or an optional hermeticity layer. Sensors and microfluidic devices incorporating MEMS resonator devices are also provided.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: July 16, 2019
    Assignee: QORVO US, INC.
    Inventors: Rio Rivas, John Belsick, Matthew Ryder
  • Patent number: 10355536
    Abstract: Disclosed herein is a method of determining a location of a wireless power receiver. The method involves determining a first coupling coefficient between a transmitter and a receiver coupled via a wireless resonant coupling link, where the receiver is disposed at a first location. Further, the method involves receiving, by the transmitter, kinematic data generated by a sensor coupled to the receiver. Yet further, the method involves determining, based on the kinematic data and the first coupling coefficient, the first location.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 16, 2019
    Assignee: X Development LLC
    Inventors: Michael Grundmann, Martin Schubert