Patents Examined by Jeffrey M Shin
  • Patent number: 11843389
    Abstract: An apparatus comprises a first circuit and a second circuit The first circuit may be configured to generate a control current signal in response to a supply voltage and a first input signal. The first circuit generally provides supply noise rejection to variations in the supply voltage. The second circuit is generally connected to the first circuit and comprises a programmable ring oscillator configured to generate an output signal having a frequency based on the control current signal and a value of a second input signal.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: December 12, 2023
    Assignee: Ambarella International LP
    Inventor: Yueh Chun Cheng
  • Patent number: 11837978
    Abstract: The present disclosure aims to provide a power wiring network apparatus capable of constructing a highly portable power wiring network, without the need to maintain infrastructure. A power wiring network apparatus includes a wiring member, including first connectors and a conductive portion electrically connecting the first connectors to enable power supply, and circuit elements each including a second connector mechanically and electrically attachable to any first connector. The circuit elements include energy harvesting elements capable of outputting, from the second connector, power generated by energy harvesting and load elements capable of consuming power inputted from the second connector. At least some energy harvesting elements and load elements are capable of power line data communication via a power line including the first connectors and conductive portion.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 5, 2023
    Assignee: ZEON CORPORATION
    Inventors: Masayoshi Yoshida, Naomi Shiga
  • Patent number: 11831249
    Abstract: A gate drive circuit of an uninterruptible power supply apparatus generates first and second gate drive signals in response to first and second PWM signals, and alternately turns on first and second IGBTs. When the first IGBT is on, the gate drive circuit sets the first gate drive signal to the “L” level in response to the second PWM signal and sets the second gale drive signal to the “H” level in response to a voltage across terminals of the first IGBT exceeding a threshold voltage.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: November 28, 2023
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Hidenobu Tajima
  • Patent number: 11831276
    Abstract: According to at least some example embodiments of the inventive concepts, an RC oscillator includes an oscillator core including a timing-circuit that includes a plurality of matched current sources, a plurality of capacitors, and a resistor, a first continuous time comparator, and a Schmitt trigger; and an analog circuit connected to the oscillator core including a second continuous time comparator representing a replica of the first continuous time comparator, and an EX-OR gate, wherein the analog circuit is configured to pass a clock signal of the oscillator core through the second continuous time comparator and obtaining a delayed clock signal representing a comparator delay, extract the comparator delay of the first continuous time comparator based on feeding the clock signal and the obtained delayed clock signal to the EX-OR gate, and charge the plurality of capacitors connected to the first continuous time comparator.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: November 28, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kishan Reddy Gonapati, Aswani Aditya Kumar Tadinada
  • Patent number: 11831277
    Abstract: A resonator device includes a resonator element, a base which has a first surface and a second surface that are in front-back relation, and in which the resonator element is arranged at the first surface, an integrated circuit provided to the base, a lid which has an inner surface opposed to the resonator element, and an outer surface in a front-back relationship with the inner surface, and which is bonded to the base so as to house the resonator element, and a radiation layer which is arranged at the inner surface of the lid, and is higher in emissivity than the lid.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: November 28, 2023
    Inventors: Ryuta Nishizawa, Junichi Takeuchi
  • Patent number: 11831316
    Abstract: A system of free running oscillators synchronized to the lowest frequency running one and following PVT variation generates a system clock. A method is particularly applicable to clock relatively small clock domains within a multi-core chip containing thousands of cores, and where the clock domain encompasses one or more cores and additional logic blocks. The resulting system clock is divided by 2k using latches or flip-flops to achieve a symmetric 50-50 duty cycle of the system clock. Further, such PVT insensitive system clock can be used as a reference for a PLL or DLL generated clock for the domain.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: November 28, 2023
    Inventor: Vojin G. Oklobdzija
  • Patent number: 11824537
    Abstract: An interleaved ring oscillator includes a first ring oscillator having n stages, and a second ring oscillator having n stages, wherein each stage includes a nth first gated inverter in the first ring oscillator and a nth second gated inverter in the second ring oscillator, such that output from the nth first gated inverter enables the nth second gated inverter, and output from the nth second gated inverter enables the nth first gated inverter.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: November 21, 2023
    Inventors: Nishit Shah, Pedram Lajevardi, Kenneth Wojciechowski, Christoph Lang
  • Patent number: 11824517
    Abstract: A resonator may include a vibrating portion that includes a plurality of vibrating arms to numbering in three or more, each having a fixed end, and including at least two vibrating arms to bend out of plane with different phases and a base portion having a fore end portion to which the fixed end of each of the plurality of vibrating arms to is connected and a rear end portion opposed to the fore end portion; a holding portion configured to hold the vibrating portion; and a support arm having one end connected to the holding portion and the other end connected to the rear end portion of the base portion. The support arm is asymmetric with respect to a center line of the vibrating portion with respect to a longitudinal direction in plan view.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: November 21, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ville Kaajakari, Ryota Kawai, Yoshiyuki Higuchi
  • Patent number: 11811385
    Abstract: Aspects of this disclosure relate to methods of manufacturing bulk acoustic wave components. Such methods include plasma dicing to singulate individual bulk acoustic wave components. A buffer layer can be formed over a substrate of bulk acoustic wave components such that streets are exposed. The bulk acoustic wave components can be plasma diced along the exposed streets to thereby singulate the bulk acoustic wave components.
    Type: Grant
    Filed: October 19, 2022
    Date of Patent: November 7, 2023
    Assignee: Skyworks Solutions, Inc.
    Inventors: Atsushi Takano, Takeshi Furusawa, Mitsuhiro Furukawa
  • Patent number: 11811380
    Abstract: Frequency stabilization is provided in a microelectromechanical systems (MEMS) oscillator via tunable internal resonance (IR). A device comprises a MEMS resonator comprising a stepped-beam structure that is a thin-layer structure. The resonator may be configured to implement IR. The stepped-beam structure may be configured to provide flexibility to adjust modal frequencies into a n:m ratio, wherein n and m are integers. The thin-layer structure provides frequency tunability by controlling the mid-plane stretching effect with an applied DC bias. The thin-layer structure compensates for a frequency mismatch from a n:m ratio due to a fabrication error. The MEMS resonator may be an oscillator.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: November 7, 2023
    Assignee: Ohio State Innovation Foundation
    Inventors: Han Na Cho, Jun Yu
  • Patent number: 11804820
    Abstract: A resonator is provided that includes a vibration member including three or more vibration arms that each have a fixed end with at least two vibration arms performing out-of-plane bending at different phases. The resonator also includes a base having a front end connected to the fixed end of each of the vibration arms and a rear end opposing the front end. A frame holds the vibration member and two support arms are provided with first ends connected to the frame. The second ends of the two support arms are connected to a location in the rear end of the base.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: October 31, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ryota Kawai, Yoshihisa Inoue, Yoshiyuki Higuchi
  • Patent number: 11804825
    Abstract: A system and method compensate for voltage and temperature variations in a pseudo synchronous communication link. The method includes receiving a data signal at a DLL through first and second variable delay circuits for performing eye tracking, keeping a sample point of the data signal in the center of a data eye having a UI; initially determining a tap size for taps of the first and second variable delay circuits; automatically selecting a number of taps of a third variable delay circuit that provides a specified delay time equal to a time value of the UI; automatically adjusting the number of taps in response to changes in the tap size; determining how many taps are equal to one half of the time value of the UI; and adjusting the number of the taps of the first and second variable delay circuits using the adjusted number of taps.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: October 31, 2023
    Assignee: KEYSIGHT TECHNOLOGIES, INC.
    Inventor: Donald M. Logelin
  • Patent number: 11799449
    Abstract: A microelectromechanical system (MEMS) resonator includes a resonant semiconductor structure, drive electrode, sense electrode and electrically conductive shielding structure. The first drive electrode generates a time-varying electrostatic force that causes the resonant semiconductor structure to resonate mechanically, and the first sense electrode generates a timing signal in response to the mechanical resonance of the resonant semiconductor structure. The electrically conductive shielding structure is disposed between the first drive electrode and the first sense electrode to shield the first sense electrode from electric field lines emanating from the first drive electrode.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: October 24, 2023
    Assignee: SiTime Corporation
    Inventors: David Raymond Pedersen, Aaron Partridge, Thor Juneau
  • Patent number: 11799441
    Abstract: A microelectromechanical (MEMS) resonator includes a resonator structure having a plurality of beam elements and connection elements with certain geometry, where the plurality of beam elements are positioned adjacent to each other and adjacent beam elements are mechanically connected to each other by the connection elements, where the geometry of the beam elements or the connection elements varies within the resonator structure.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: October 24, 2023
    Assignee: KYOCERA Tikitin Oy
    Inventors: Antti Jaakkola, Panu Koppinen
  • Patent number: 11799323
    Abstract: A wireless power reception device and a wireless communication method thereby are provided. The wireless communication method by the wireless power reception device may comprise the steps of: receiving a wireless power signal from a wireless power transmission device; measuring the strength of the wireless power signal; modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and performing communication with the wireless power transmission device by using the signal having the amplitude modulated.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: October 24, 2023
    Assignee: GE Hybrid Technologies, LLC
    Inventors: Chun-Kil Jung, Hak Do Kim, Sang Youn Noh
  • Patent number: 11784632
    Abstract: A vibrator device includes: a base; a vibrator disposed in the base; and a lid including a substrate having a light transmitting property and a silicon substrate joined to the substrate and a part of the base surrounding the vibrator.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: October 10, 2023
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Yamazaki, Osamu Kawauchi, Akihiko Ebina
  • Patent number: 11784631
    Abstract: A resonance element supported by a bearing structure includes a crystal chip and an excitation electrode. The crystal chip includes a main surface having a support surface portion being in contact with the bearing structure. The excitation electrode is disposed on the main surface, has an electrode area, and includes an electrode indentation boundary partly encompassing the support surface portion. The electrode indentation boundary has a first boundary end and a second boundary end being opposite to the first boundary end. The electrode indentation boundary and a reference line segment defined by the first and the second boundary ends form an electrode indentation region having an indentation area. A ratio of the indentation area to the electrode area ranges from 0.05 to 0.2.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: October 10, 2023
    Assignee: TAI-SAW TECHNOLOGY CO., LTD.
    Inventors: Chia-Haur Rau, Kun-Yu Huang, Chi-Yun Chen
  • Patent number: 11777446
    Abstract: An oscillator includes a forward stage including first and second terminals and a transformer-coupled band-pass filter (BPF) coupled between the first and second terminals and including a coupling device between the first and second terminals, and a transformer including first and second windings in a metal layer of an IC. The first winding includes a first conductive structure coupled to the first terminal and a second conductive structure coupled to a voltage node, a third conductive structure including first and second extending portions connected to the first and second conductive structures. The second winding includes a fourth conductive structure including a third extending portion coupled to the voltage node, and a fourth extending portion coupled to the second terminal. The third extending portion is between the second conductive structure and the first extending portion, and the fourth extending portion is between the first conductive structure and the second extending portion.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: October 3, 2023
    Inventors: Chi-Hsien Lin, Ho-Hsiang Chen, Hsien-Yuan Liao, Tzu-Jin Yeh, Ying-Ta Lu
  • Patent number: 11770102
    Abstract: An oscillator is comprising a plurality of resonators and a voltage bias circuit that applies voltages to the plurality of resonators. Each of the plurality of resonators has a negative resistance element. In the oscillator, the plurality of resonators are connected in parallel to the voltage bias circuit respectively via separate inductors.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: September 26, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Kandori, Noriyuki Kaifu
  • Patent number: 11764729
    Abstract: An oscillator includes: a resonator element; a circuit element configured to output a clock signal; and a container accommodating the resonator element and the circuit element and including a substrate having a first surface. The substrate includes a first electrode provided on the first surface and electrically coupled to the resonator element, a second electrode electrically coupled to the resonator element, and an output electrode configured to output the clock signal. The first electrode and the second electrode are disposed side by side in a first direction. The output electrode is disposed adjacent to the first electrode in a second direction orthogonal to the first direction. When an end portion of the first electrode on a side close to the second electrode is defined as a first end portion, the output electrode includes a first region disposed closer to the second electrode side than the first end portion in the first direction.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: September 19, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Manabu Shiraki, Shinya Aoki