Patents by Inventor Kazuki Ohshitanai

Kazuki Ohshitanai 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: 20240006451
    Abstract: A photoelectric conversion apparatus includes a first substrate including a photoelectric conversion element, and a second substrate including an amplification transistor and a selection transistor connected electrically to a source of the amplification transistor, the amplification transistor being configured to amplify electrons that are a signal charge output from the photoelectric conversion element. The photoelectric conversion element includes an n-type semiconductor region configured to store the electrons. The amplification transistor and the selection transistor are each a p-type metal oxide semiconductor (p-type MOS) transistor.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 4, 2024
    Inventors: SHINYA ICHINO, TSUTOMU TANGE, KAZUKI OHSHITANAI
  • Patent number: 11765485
    Abstract: A photoelectric conversion apparatus includes a driving unit and a plurality of pixels. The pixel includes a first photoelectric conversion unit, a second photoelectric conversion unit, a charge-voltage conversion unit, a first transfer transistor, a second transfer transistor, a reset transistor, a microlens configured to condense incident light to the first photoelectric conversion unit and the second photoelectric conversion unit, and an output unit. The driving unit performs a first operation including a first reset operation and a first readout operation, and a second operation including a second reset operation and a second readout operation.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: September 19, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuki Ohshitanai
  • Publication number: 20230179893
    Abstract: A photoelectric conversion device includes a plurality of pixels, a plurality of output lines, to which signals from corresponding pixels are output, respectively, an amplification unit arranged corresponding to each of the plurality of output lines and configured to amplify a signal output to a corresponding output line, a comparison unit arranged corresponding to each of the plurality of output lines and having a first input terminal and a second input terminal, a signal corresponding to an output of the amplification unit being input to the first input terminal, a reference signal being input to the second input terminal, and a switch connecting nodes of the plurality of output lines. During a period before an offset clamping operation is completed, the switch is turned on.
    Type: Application
    Filed: December 1, 2022
    Publication date: June 8, 2023
    Inventors: KAZUKI OHSHITANAI, KAZUO YAMAZAKI
  • Publication number: 20230179881
    Abstract: A photoelectric conversion device includes a plurality of pixels arranged to form a plurality of columns, an output line arranged corresponding to each of the plurality of columns, a signal from a corresponding pixel being output to the output line, and a comparison unit arranged corresponding to each of the plurality of columns and having a first input terminal and a second input terminal. A signal corresponding to a potential of the output line is input to the first input terminal. A reference signal is input to the second input terminal. The comparison unit performs an offset clamping operation, and then performs comparison for analog-to-digital conversion of a signal output from a pixel.
    Type: Application
    Filed: November 22, 2022
    Publication date: June 8, 2023
    Inventors: KAZUKI OHSHITANAI, SATOSHI KUMAKI
  • Publication number: 20230042825
    Abstract: A photoelectric conversion apparatus includes a driving unit and a plurality of pixels. The pixel includes a first photoelectric conversion unit, a second photoelectric conversion unit, a charge-voltage conversion unit, a first transfer transistor, a second transfer transistor, a reset transistor, a microlens configured to condense incident light to the first photoelectric conversion unit and the second photoelectric conversion unit, and an output unit. The driving unit performs a first operation including a first reset operation and a first readout operation, and a second operation including a second reset operation and a second readout operation.
    Type: Application
    Filed: July 29, 2022
    Publication date: February 9, 2023
    Inventor: Kazuki Ohshitanai
  • Patent number: 11495005
    Abstract: An image sensor comprises a pixel array having a plurality of pixels arranged in a matrix, a readout unit that controls readout of signals from the plurality of pixels, an output unit that outputs the read signals as an image signal and an extraction unit that performs feature amount extraction processing to extract a feature amount using the read signals. The readout of the signals by the readout unit and the feature amount extraction processing by the extraction unit are processed in parallel.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: November 8, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuki Ohshitanai, Hideki Ikedo
  • Patent number: 11252354
    Abstract: An image sensor comprises: a pixel unit including a plurality of first blocks each of which includes a plurality of first pixels shielded from light and a plurality of second blocks each of which includes a plurality of second pixels that are not shielded from light; and a controller that controls a plurality of readout operations for processing, in parallel, pixel signals read out from the plurality of first blocks and the plurality of second blocks in the pixel unit. The controller performs control so as to end readout of pixel signals from at least a predetermined portion of the first pixels included in each of the plurality of first blocks, before readout of pixel signals from the plurality of second blocks is started.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 15, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Mie Ishii, Kazuki Ohshitanai
  • Publication number: 20210271915
    Abstract: An image sensor comprises a pixel array having a plurality of pixels arranged in a matrix, a readout unit that controls readout of signals from the plurality of pixels, an output unit that outputs the read signals as an image signal and an extraction unit that performs feature amount extraction processing to extract a feature amount using the read signals. The readout of the signals by the readout unit and the feature amount extraction processing by the extraction unit are processed in parallel.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 2, 2021
    Inventors: Kazuki Ohshitanai, Hideki Ikedo
  • Patent number: 11025852
    Abstract: An image capturing apparatus includes a pixel portion in which a plurality of pixel blocks are arranged, each pixel block including a predetermined number of pixels; a plurality of readout circuits arranged corresponding to the plurality of pixel blocks; a supply unit that supplies drive signals to the plurality of readout circuits; a setting unit that sets image capturing conditions for each of the plurality of pixel blocks; and a control unit that carries out control so that when the setting unit has set different image capturing conditions for a first pixel block and a second pixel block, the supply unit supplies a first drive signal to the readout circuits corresponding to the first pixel block, and supplies a second drive signal to the readout circuits corresponding to the second pixel block.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: June 1, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazuki Ohshitanai
  • Patent number: 10834353
    Abstract: An image sensor comprising: a generator that generates a plurality of reference signals having different slopes of potential change; a selector that selects one of the reference signals; and an analog/digital converter that converts an analog signal output from a pixel unit by first or second driving using the selected reference signal into a digital signal. In the first driving, a noise signal is converted into a plurality of first digital signals using the reference signals and a photoelectric conversion signal is converted into a second digital signal using one of the reference signals. In the second driving, the noise signal is converted into the first digital signal using a predetermined one of the reference signals and the photoelectric conversion signal is converted into the second digital signal using one of the reference signals. The first driving is performed intermittently.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: November 10, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuki Ohshitanai
  • Publication number: 20200335545
    Abstract: An image sensor comprises: a plurality of pixels each having an avalanche photodiode; and a control unit that controls to provide to the avalanche photodiodes of the plurality of pixels a reverse bias voltage that periodically changes.
    Type: Application
    Filed: April 7, 2020
    Publication date: October 22, 2020
    Inventor: Kazuki Ohshitanai
  • Publication number: 20200137338
    Abstract: An image capturing apparatus includes a pixel portion in which a plurality of pixel blocks are arranged, each pixel block including a predetermined number of pixels; a plurality of readout circuits arranged corresponding to the plurality of pixel blocks; a supply unit that supplies drive signals to the plurality of readout circuits; a setting unit that sets image capturing conditions for each of the plurality of pixel blocks; and a control unit that carries out control so that when the setting unit has set different image capturing conditions for a first pixel block and a second pixel block, the supply unit supplies a first drive signal to the readout circuits corresponding to the first pixel block, and supplies a second drive signal to the readout circuits corresponding to the second pixel block.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 30, 2020
    Inventor: Kazuki Ohshitanai
  • Publication number: 20200045258
    Abstract: An image sensor comprises: a pixel unit including a plurality of first blocks each of which includes a plurality of first pixels shielded from light and a plurality of second blocks each of which includes a plurality of second pixels that are not shielded from light; and a controller that controls a plurality of readout operations for processing, in parallel, pixel signals read out from the plurality of first blocks and the plurality of second blocks in the pixel unit. The controller performs control so as to end readout of pixel signals from at least a predetermined portion of the first pixels included in each of the plurality of first blocks, before readout of pixel signals from the plurality of second blocks is started.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 6, 2020
    Inventors: Mie Ishii, Kazuki Ohshitanai
  • Publication number: 20190327436
    Abstract: An image sensor comprising: a generator that generates a plurality of reference signals having different slopes of potential change; a selector that selects one of the reference signals; and an analog/digital converter that converts an analog signal output from a pixel unit by first or second driving using the selected reference signal into a digital signal. In the first driving, a noise signal is converted into a plurality of first digital signals using the reference signals and a photoelectric conversion signal is converted into a second digital signal using one of the reference signals. In the second driving, the noise signal is converted into the first digital signal using a predetermined one of the reference signals and the photoelectric conversion signal is converted into the second digital signal using one of the reference signals. The first driving is performed intermittently.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 24, 2019
    Inventor: Kazuki Ohshitanai
  • Patent number: 10122954
    Abstract: In a photoelectric conversion apparatus, the number of differential transistors in which ON states thereof overlap with one another is increased when the number of the amplification transistors in which ON states thereof overlap with one another is increased.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: November 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuki Ohshitanai, Yasuji Ikeda
  • Patent number: 9769404
    Abstract: A solid-state image sensor has a pixel array and a processor configured to process a signal from the pixel array, the pixel array including a light-receiving pixel having first and second photoelectric converters and a light-shielded pixel having third and fourth photoelectric converters. The processor outputs (a) a pixel signal corresponding to charges of the first photoelectric converter, (b) an added pixel signal corresponding to a sum of charges of the first photoelectric converter and charges of the second photoelectric converter, and (c) an added reference signal corresponding to a sum of charges of the third photoelectric converter and charges of the fourth photoelectric converter, and does not output (d) a reference signal corresponding to charges of the third photoelectric converter and a reference signal corresponding to charges of the fourth photoelectric converter.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: September 19, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuki Ohshitanai
  • Patent number: 9743030
    Abstract: A pixel portion includes a plurality of first pixel rows and a plurality of second pixel rows each being arranged so as to be adjacent to the first pixel row. Among the first pixel row and the second pixel row arranged so as to be adjacent to each other, during at least a part of a period from an end of the electric charge accumulation period in the second pixel row until an end of an output period in which signals from pixels in the first pixel row are output, electric charges accumulated in photoelectric conversion units of pixels in the second pixel row are reset.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: August 22, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroo Akabori, Koichiro Iwata, Hiroyuki Morita, Shinichiro Shimizu, Daisuke Inoue, Kazuki Ohshitanai
  • Publication number: 20170155856
    Abstract: The present invention provides a driving method for an image pickup apparatus that appropriately performs both readout of a signal of a reference pixel and mixing of mutual signals output by a plurality of effective pixels, and the present invention also provides an image pickup apparatus and an image pickup system.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Inventors: Kazuki Ohshitanai, Hiroo Akabori, Takeshi Akiyama, Yoshiaki Takada, Masaaki Iwane, Koichiro Iwata, Hiroyuki Morita, Hideo Kobayashi
  • Patent number: 9627423
    Abstract: Provided is a solid-state image pickup apparatus, including: a pixel region, in which a plurality of pixels each including an amplifier transistor are arranged two-dimensionally in rows and columns, and which includes an n-row signal mixing region in which outputs of n amplifier transistors are mixed, where n is a natural number of 1 or more, and an m-row signal mixing region in which outputs of m amplifier transistors are mixed, where m>n; a column signal line to which a voltage from the amplifier transistor is output; and a clipping circuit, which is configured to clip a voltage in the column signal line, and is arranged at a position that is closer to the n-row signal mixing region than to the m-row signal mixing region.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: April 18, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshiaki Takada, Masaaki Iwane, Kazuki Ohshitanai
  • Patent number: 9609245
    Abstract: A semiconductor apparatus, comprising a decoder arranged in a path between a first power supply line and a second power supply line and configured to receive a signal and decode the signal, a switch portion arranged, in series with the decoder, in the path between the first power supply line and the second power supply line, and a control unit configured to set the switch portion in a conductive state so as to cause the decoder to decode the signal after the signal has changed from one of high level and low level to the other.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: March 28, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koichiro Iwata, Kazuki Ohshitanai, Hiroo Akabori, Takeshi Akiyama, Hiroyuki Morita