Patents by Inventor Tomonaga Iwahara

Tomonaga Iwahara 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).

  • Patent number: 11765487
    Abstract: An imaging apparatus is provided in which signals from a plurality of pixels are output to signal output lines during a predetermined reading period, a first reading mode and a second reading mode where analog-to-digital (AD) conversion circuits perform AD conversion on the signals are included, and the reading period includes a first period from when the signals from the pixels are output to the signal output lines to when the AD conversion circuits start AD conversion on the signals a predetermined time later, and a second period where the AD conversion circuits perform the AD conversion on the signals from the pixels, the reading period is equal between the first and second reading modes, and lengths of the first and second periods are different from each other.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: September 19, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tomonaga Iwahara, Mie Ishii
  • Patent number: 11716551
    Abstract: An image capture apparatus that comprises an image sensor that includes a pixel array in which a plurality of pixels are disposed in rows and columns and a plurality of column signal lines provided for each column of the pixels, is disclosed. The apparatus further comprises a first correction circuit and a second correction circuit that share application of correction of offset caused by a difference in column signal lines where the pixel signals are read out to.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: August 1, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tomonaga Iwahara
  • Publication number: 20230188847
    Abstract: An image sensor comprises a pixel array in which pixels are arranged in a matrix form, and phase-difference signals in a horizontal direction are output from a first pixel group of the pixel array via a first signal output line, and phase-difference signals in a vertical direction are output from a second pixel group, which is different from the first pixel group of the pixel array, via a second signal output line, and number of pixels of the phase-difference signals in the horizontal direction output via the first signal output line and number of pixels of the phase-difference signals in the vertical direction output via the second signal output line are different.
    Type: Application
    Filed: December 8, 2022
    Publication date: June 15, 2023
    Inventors: Daiki YAMAMOTO, Tomonaga IWAHARA
  • Publication number: 20230122172
    Abstract: An image capturing apparatus comprises a pixel array in which a plurality of column output lines including a first column output line and a second column output line are arranged for each column; and a readout circuit configured to read out signals from the pixels via the column output lines, wherein the readout circuit performs a first read-out scan of reading out signals via the first column output line from a first pixel group of the pixel array, and a second read-out scan of reading out signals via the second column output line from a second pixel group, and the readout circuit reads out a phase-difference signal of a horizontal direction by the first read-out scan, and reads out a phase-difference signal of a vertical direction by the second read-out scan.
    Type: Application
    Filed: October 11, 2022
    Publication date: April 20, 2023
    Inventors: Tomonaga Iwahara, Daiki Yamamoto
  • Publication number: 20220329749
    Abstract: An imaging apparatus is provided in which signals from a plurality of pixels are output to signal output lines during a predetermined reading period, a first reading mode and a second reading mode where analog-to-digital (AD) conversion circuits perform AD conversion on the signals are included, and the reading period includes a first period from when the signals from the pixels are output to the signal output lines to when the AD conversion circuits start AD conversion on the signals a predetermined time later, and a second period where the AD conversion circuits perform the AD conversion on the signals from the pixels, the reading period is equal between the first and second reading modes, and lengths of the first and second periods are different from each other.
    Type: Application
    Filed: April 4, 2022
    Publication date: October 13, 2022
    Inventors: Tomonaga Iwahara, Mie Ishii
  • Publication number: 20220232178
    Abstract: An image capture apparatus that comprises an image sensor that includes a pixel array in which a plurality of pixels are disposed in rows and columns and a plurality of column signal lines provided for each column of the pixels, is disclosed. The apparatus further comprises a first correction circuit and a second correction circuit that share application of correction of offset caused by a difference in column signal lines where the pixel signals are read out to.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 21, 2022
    Inventor: Tomonaga Iwahara
  • Patent number: 11297269
    Abstract: An image capturing apparatus includes an image sensor in which a plurality of unit pixels are arranged, each unit pixel including one microlens and at least one light receiving portion that produces a pulse signal when light is incident on the light receiving portion, wherein the unit pixel includes a counting circuit capable of counting the pulse signals of a plurality of the light receiving portions.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: April 5, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takayuki Yasuda, Hiroyasu Katagawa, Tomonaga Iwahara
  • Patent number: 10911703
    Abstract: An image sensor comprises: a plurality of light receiving elements whose output voltages vary in response to a photon entering; a plurality of counters each counts a number of events in which the output voltage changes beyond a predetermined threshold, and outputs a count value; and a voltage source that applies a plurality of different reverse bias voltages which are equal to or higher than a breakdown voltage to the plurality of light receiving elements.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: February 2, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tomonaga Iwahara
  • Publication number: 20200252563
    Abstract: An image capturing apparatus includes an image sensor in which a plurality of unit pixels are arranged, each unit pixel including one microlens and at least one light receiving portion that produces a pulse signal when light is incident on the light receiving portion, wherein the unit pixel includes a counting circuit capable of counting the pulse signals of a plurality of the light receiving portions.
    Type: Application
    Filed: January 31, 2020
    Publication date: August 6, 2020
    Inventors: Takayuki Yasuda, Hiroyasu Katagawa, Tomonaga Iwahara
  • Publication number: 20200045257
    Abstract: An image sensor comprises: a plurality of light receiving elements whose output voltages vary in response to a photon entering; a plurality of counters each counts a number of events in which the output voltage changes beyond a predetermined threshold, and outputs a count value; and a voltage source that applies a plurality of different reverse bias voltages which are equal to or higher than a breakdown voltage to the plurality of light receiving elements.
    Type: Application
    Filed: July 30, 2019
    Publication date: February 6, 2020
    Inventor: Tomonaga Iwahara
  • Publication number: 20160344920
    Abstract: An image capturing apparatus includes a plurality of unit pixels arranged in matrix and each including a plurality of photoelectric conversion portions, and an AD converter configured to receive a signal from each unit pixel via a vertical signal line and operate in the first AD conversion mode when being set in the first readout mode, and operates in the second AD conversion mode different from the first AD conversion mode when being set in the second readout mode. The first readout mode is a mode of independently outputting signals from a plurality of photoelectric conversion portions to a corresponding vertical signal line. The second readout mode is a mode of composing and outputting signals from a plurality of photoelectric conversion portions to a corresponding vertical signal line.
    Type: Application
    Filed: January 20, 2015
    Publication date: November 24, 2016
    Inventor: Tomonaga Iwahara
  • Publication number: 20100283370
    Abstract: A light-emitting substrate includes a substrate, a plurality of light-emitting members arranged in a matrix on the substrate, and a plurality of metal backs arranged in a matrix over the plurality of light-emitting members. In each row or each column of the plurality of metal backs, two adjacent metal backs are connected to each other through a resistive member. A conductive member having a resistance value lower than that of the resistive member is connected to a portion of the resistive member, the portion being spaced from the two adjacent metal backs.
    Type: Application
    Filed: April 26, 2010
    Publication date: November 11, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tomoya Onishi, Yukihiro Inoue, Tomonaga Iwahara