Patents by Inventor Hidekazu Kikuchi

Hidekazu Kikuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220350001
    Abstract: Sensing devices configured to detect photons with high accuracy regardless of environmental illuminance are disclosed. In one example, a sensing device includes a photodetector and a load element connected between the photodetector and a first reference potential. A first transistor is configured to be turned on according to a voltage of a node between the photodetector and the load element. A second transistor is configured to turn on according to either a current of the first transistor or a voltage of a second signal line. A third transistor of an opposite conductivity type to the first and second transistors is configured to turn on according to the voltage of the second signal line. A first inverter is connected between a node between the first transistor and the third transistor and a fourth signal line.
    Type: Application
    Filed: October 22, 2020
    Publication date: November 3, 2022
    Inventors: Masaki Sakakibara, Hidekazu Kikuchi
  • Patent number: 11212074
    Abstract: A data reception device that can improve communication quality when transmitting/receiving serial data is to be provided. There is provided the data reception device including a signal generation unit that generates, from serial data received, a first signal whose value is inverted at a rising timing of the serial data and a second signal whose value is inverted at a falling timing of the serial data, and a clock recovery unit that performs clock recovery using the first signal and the second signal generated by the signal generation unit.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: December 28, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Tomokazu Tanaka, Hidekazu Kikuchi, Hideo Morohashi
  • Patent number: 11159173
    Abstract: The present technology relates to a DAC circuit, a solid-state imaging element, and electronic equipment that can be achieved with a small-scale circuit configuration. The DAC circuit includes: a ramp DAC that generates a ramp signal that changes in voltage with a constant time gradient; an injection DAC that outputs a predetermined voltage during a reset period for resetting a comparison target voltage to be compared with the ramp signal; and an adding circuit that adds an output of the ramp DAC and an output of the injection DAC and outputs the outputs to a comparison circuit as a comparison reference voltage. The present technology can be applied to, for example, a DAC circuit of a solid-state imaging element, and the like.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: October 26, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Shin Kitano, Masaki Sakakibara, Hidekazu Kikuchi, Mitsuaki Osame
  • Patent number: 11018659
    Abstract: An imaging device for improving the determining speed of a comparator and reducing power consumption. The comparator imaging device includes a differential input circuit that operates with a first power supply voltage, the differential input circuit outputs a signal when an input signal is higher than a reference signal in voltage, and a positive feedback circuit that operates with a second power supply voltage lower than the first power supply voltage. The positive feedback circuit accelerates transition speed when a compared result signal indicating a compared result between the input signal and the reference signal in voltage, is inverted, on the basis of the output signal of the differential input circuit. The imaging device further includes a voltage conversion circuit that converts the output signal of the differential input circuit into a signal corresponding to the second power supply voltage.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: May 25, 2021
    Assignee: SONY CORPORATION
    Inventors: Hidekazu Kikuchi, Tadayuki Taura, Masaki Sakakibara
  • Patent number: 10962621
    Abstract: A communication circuit, a communication system, and a self-diagnosis method of the communication circuit, which facilitate specifying a failed part which causes a communication failure when a communication failure occurs in a communication system, are provided. A serial signal for self-diagnosis is supplied to a first conversion unit, a pulse signal for self-diagnosis corresponding to the serial signal for self-diagnosis output from the first conversion unit is input to a second conversion unit instead of a pulse signal received by a pulse signal reception unit, and the serial signal corresponding to the pulse signal for self-diagnosis output from the second conversion unit is transmitted to the outside via a serial signal transmission unit.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: March 30, 2021
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Hidekazu Kikuchi
  • Publication number: 20210067168
    Abstract: The present technology relates to a DAC circuit, a solid-state imaging element, and electronic equipment that can be achieved with a small-scale circuit configuration. The DAC circuit includes: a ramp DAC that generates a ramp signal that changes in voltage with a constant time gradient; an injection DAC that outputs a predetermined voltage during a reset period for resetting a comparison target voltage to be compared with the ramp signal; and an adding circuit that adds an output of the ramp DAC and an output of the injection DAC and outputs the outputs to a comparison circuit as a comparison reference voltage. The present technology can be applied to, for example, a DAC circuit of a solid-state imaging element, and the like.
    Type: Application
    Filed: January 15, 2019
    Publication date: March 4, 2021
    Inventors: SHIN KITANO, MASAKI SAKAKIBARA, HIDEKAZU KIKUCHI, MITSUAKI OSAME
  • Publication number: 20200213076
    Abstract: A data reception device that can improve communication quality when transmitting/receiving serial data is to be provided. There is provided the data reception device including: a signal generation unit that generates, from serial data received, a first signal whose value is inverted at a rising timing of the serial data and a second signal whose value is inverted at a falling timing of the serial data; and a clock recovery unit that performs clock recovery using the first signal and the second signal generated by the signal generation unit.
    Type: Application
    Filed: July 20, 2018
    Publication date: July 2, 2020
    Inventors: TOMOKAZU TANAKA, HIDEKAZU KIKUCHI, HIDEO MOROHASHI
  • Publication number: 20200067498
    Abstract: The present disclosure relates to a comparator, an AD converter, a solid-state image pickup device, an electronic device, a method of controlling the comparator, a data writing circuit, a data reading circuit, and a data transferring circuit, capable of improving the determining speed of the comparator and reducing power consumption.
    Type: Application
    Filed: October 30, 2019
    Publication date: February 27, 2020
    Inventors: HIDEKAZU KIKUCHI, TADAYUKI TAURA, MASAKI SAKAKIBARA
  • Patent number: 10564225
    Abstract: A battery monitoring system includes a plurality of battery monitoring devices connected in series, such that each battery monitoring device is in communication with at least one adjacent battery monitoring device, and each battery monitoring device monitors battery cells. First and second interface devices are located along first and second communication paths including the battery monitoring devices. A controller controls the first and second interface devices to switch transmission modes between transmitting along the first communication path via the first interface device and the battery monitoring devices, transmitting along the second communication path via the second interface device and the battery monitoring devices, and transmitting along a third transmission mode in which a direction of the communication signals outputted from the first interface device and the second interface device to the plurality of battery monitoring devices are reversed.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: February 18, 2020
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventors: Masato Yamazaki, Hidekazu Kikuchi
  • Patent number: 10498321
    Abstract: An imaging device for improving the determining speed of the comparator and reducing power consumption. The comparator includes a differential input circuit that operates with a first power supply voltage, the differential input circuit that outputs a signal when an input signal is higher than a reference signal in voltage, a positive feedback circuit that operates with a second power supply voltage lower than the first power supply voltage and accelerates transition speed when a compared result signal indicating a compared result between the input signal and the reference signal in voltage, is inverted, based on the output signal of the differential input circuit, and a voltage conversion circuit that converts the output signal of the differential input circuit into a signal corresponding to the second power supply voltage.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: December 3, 2019
    Assignee: SONY CORPORATION
    Inventors: Hidekazu Kikuchi, Tadayuki Taura, Masaki Sakakibara
  • Patent number: 10347960
    Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 9, 2019
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hidekazu Kikuchi, Takayuki Mogi, Yoshiyuki Akiyama, Hirofumi Kawamura
  • Patent number: 10330736
    Abstract: A semiconductor device for measuring a voltage of a battery cell, including first and second nodes, and first and second battery voltage measurement units. The first node is configured to receive a first voltage, the first voltage being a voltage of a capacitor that accumulates an electric charge based on the voltage of the battery cell. The first battery voltage measurement unit measures the first voltage through a first path. The second node is configured to receive a second voltage based on the voltage of the battery cell, the second node being different from the first node. The second battery voltage measurement unit measures the second voltage through a second path that is different from the first path.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 25, 2019
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventors: Masaru Sekiguchi, Hidekazu Kikuchi, Naoaki Sugimura
  • Patent number: 10320039
    Abstract: A semiconductor device includes a voltage generation circuit configured to generate a specific voltage; a first terminal configured to output the specific voltage; a second terminal configured to receive a temperature sensitive voltage; an analog/digital conversion circuit configured to convert the specific voltage and the temperature sensitive voltage to digital values; a storage unit configured to store the specific voltage and the temperature sensitive voltage; and a third terminal configured to transmit the specific voltage and the temperature sensitive voltage to an external semiconductor device.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: June 11, 2019
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Hidekazu Kikuchi
  • Publication number: 20180372804
    Abstract: A battery monitoring system includes a plurality of battery monitoring devices connected in series, such that each battery monitoring device is in communication with at least one adjacent battery monitoring device, and each battery monitoring device monitors battery cells. First and second interface devices are located along first and second communication paths including the battery monitoring devices. A controller controls the first and second interface devices to switch transmission modes between transmitting along the first communication path via the first interface device and the battery monitoring devices, transmitting along the second communication path via the second interface device and the battery monitoring devices, and transmitting along a third transmission mode in which a direction of the communication signals outputted from the first interface device and the second interface device to the plurality of battery monitoring devices are reversed.
    Type: Application
    Filed: June 20, 2018
    Publication date: December 27, 2018
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventors: Masato YAMAZAKI, Hidekazu KIKUCHI
  • Publication number: 20180351540
    Abstract: The present disclosure relates to a comparator, an AD converter, a solid-state image pickup device, an electronic device, a method of controlling the comparator, a data writing circuit, a data reading circuit, and a data transferring circuit, capable of improving the determining speed of the comparator and reducing power consumption.
    Type: Application
    Filed: August 8, 2018
    Publication date: December 6, 2018
    Inventors: HIDEKAZU KIKUCHI, TADAYUKI TAURA, MASAKI SAKAKIBARA
  • Publication number: 20180306886
    Abstract: A communication circuit, a communication system, and a self-diagnosis method of the communication circuit, which facilitate specifying a failed part which causes a communication failure when a communication failure occurs in a communication system, are provided. A serial signal for self-diagnosis is supplied to a first conversion unit, a pulse signal for self-diagnosis corresponding to the serial signal for self-diagnosis output from the first conversion unit is input to a second conversion unit instead of a pulse signal received by a pulse signal reception unit, and the serial signal corresponding to the pulse signal for self-diagnosis output from the second conversion unit is transmitted to the outside via a serial signal transmission unit.
    Type: Application
    Filed: April 23, 2018
    Publication date: October 25, 2018
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventor: Hidekazu Kikuchi
  • Publication number: 20180294998
    Abstract: A video signal and an audio signal are TMDS transmitted from a source device to a sink device. Through a reserved line and a HPD line provided separately from a TMDS transmission line, an Ethernet™ signal is bidirectionally transmitted, and also, a SPDIF signal is transmitted from the sink device to the source device. The Ethernet™ signal bidirectionally transmitted between Ethernet™ transmitter/receiver circuits is differentially transmitted by an amplifier and is received by the amplifier. The SPDIF signal from a SPDIF transmitter circuit is common-mode transmitted from an adder and is received by the adder to be supplied to the SPDIF receiver circuit.
    Type: Application
    Filed: June 14, 2018
    Publication date: October 11, 2018
    Applicant: Sony Corporation
    Inventors: Gen Ichimura, Hidekazu Kikuchi, Yasuhisa Nakajima
  • Patent number: 10075155
    Abstract: An electronic device is provided for improving the determining speed of the comparator and reducing power consumption. The comparator includes a differential input circuit configured to operate with a first power supply voltage and output a signal when an input signal is higher than a reference signal in voltage; a positive feedback circuit configured to operate with a second power supply voltage lower than the first power supply voltage and to accelerate transition speed when a compared result signal indicating a compared result between the input signal and the reference signal in voltage, is inverted, based on the output signal of the differential input circuit; and a voltage conversion circuit configured to convert the output signal of the differential input circuit into a signal corresponding to the second power supply voltage.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: September 11, 2018
    Assignee: SONY CORPORATION
    Inventors: Hidekazu Kikuchi, Tadayuki Taura, Masaki Sakakibara
  • Patent number: 10033553
    Abstract: A video signal and an audio signal are TMDS transmitted from a source device to a sink device. Through a reserved line and a HPD line provided separately from a TMDS transmission line, an Ethernet™ signal is bidirectionally transmitted, and also, a SPDIF signal is transmitted from the sink device to the source device. The Ethernet™ signal bidirectionally transmitted between Ethernet™ transmitter/receiver circuits is differentially transmitted by an amplifier and is received by the amplifier. The SPDIF signal from a SPDIF transmitter circuit is common-mode transmitted from an adder and is received by the adder to be supplied to the SPDIF receiver circuit.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: July 24, 2018
    Assignee: Sony Corporation
    Inventors: Gen Ichimura, Hidekazu Kikuchi, Yasuhisa Nakajima
  • Patent number: 10018680
    Abstract: A semiconductor device, a battery monitoring system, and a method for activating the semiconductor device that may reduce current consumption in standby state. An integrated circuit (IC) of the semiconductor device includes an activation circuit that uses a ground of the IC as ground and a power source voltage of the IC as its power source, and a driving circuit that uses the power source voltage as ground and a boosted voltage output from a boosting circuit as its power source. In the IC, only the activation circuit enters an operation state in a standby state, and when recovered from the standby state, causes the activation circuit to make inner circuits of the IC enter the operation state based on an activation signal. When all the inner circuits enter the operation state, the driving circuit outputs the activation signal to the activation circuit of an upper IC.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: July 10, 2018
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Hidekazu Kikuchi