Patents by Inventor Aihiko Numata

Aihiko Numata 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: 11843890
    Abstract: In order to achieve a photoelectric conversion device that enables suppressing the lowering in tone, a photoelectric conversion device has a pixel including a photoelectric conversion element that outputs a signal according to an incident photon; a photon counter that outputs a measured value according to the number of photons incident to the pixel, a time counter that measures a time until the measured value of the photon counter reaches a first threshold after the photon counter starts the measurement, and a sensitivity adjustment unit configured to perform a sensitivity change for the pixel during a time until the measured value of the photon counter reaches the first threshold after the photon counter starts the measurement.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: December 12, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Patent number: 11832002
    Abstract: An apparatus includes an acquisition unit configured to acquire a measurement result of a number of luminance changes, based on an address event signal indicating an address of a pixel having changed in luminance and a time, and a control unit configured to cause a relationship between the time and the measurement result to be displayed. The control unit causes the measurement result to be displayed in accordance with a direction of the luminance changes.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: November 28, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Patent number: 11815394
    Abstract: A photoelectric conversion device including a pixel configured to output a signal in response to incidence of a photon includes a first measurement unit configured to measure the signal output from the pixel, a second measurement unit configured to measure time until the signal measured by the first measurement unit reaches a first threshold, a first storage unit configured to store, as a first time, a result of the measurement by the second measurement unit at a first time point, a comparison unit configured to compare the first time stored in the first storage unit and a second time measured by the second measurement unit at a second time point later than the first time point, and an output unit configured to output a signal corresponding to a result of the comparison by the comparison unit.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: November 14, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Patent number: 11805334
    Abstract: An apparatus includes an acquisition unit configured to obtain a signal indicating an address of a pixel in which a change in luminance has occurred and time of the change and a generation unit configured to generate a time-series image indicating a position of at least one pixel in which a change in luminance has occurred and a direction of the change in luminance based on the signal, wherein, when the time-series image is to be displayed in reverse chronological order, the generation unit generates the time-series image in which the direction of the change in luminance is reversed.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: October 31, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Publication number: 20230247307
    Abstract: A photoelectric conversion apparatus includes a processing circuit, and a memory that stores a computer-readable instruction for causing, when executed by the processing circuit, the photoelectric conversion apparatus to generate control signals for controlling an operation of an image capturing unit configured to perform image capturing using avalanche light emission, control a first generation unit to generate control signals of a first frame and a second frame, wherein a number of the control signals during an exposure period of the second frame is smaller than a number of the control signals during an exposure period of the first frame, acquire an output of the first frame captured by the image capturing unit and an output of the second frame captured by the image capturing unit, and generate an image based on the output of the first frame and the output of the second frame.
    Type: Application
    Filed: January 11, 2023
    Publication date: August 3, 2023
    Inventor: AIHIKO NUMATA
  • Publication number: 20230188863
    Abstract: An image capturing unit comprises a photoelectric conversion element configured to detect an address event indicating a change in luminance in each pixel address, an integration unit configured to generate a frame image based on an integrated value obtained by integrating an address event for each pixel, and a determination unit configured to determine whether an integrated value has reached a predetermined threshold value. The determination unit is configured to stop integration in the integration unit when it determines that the integrated value has reached a predetermined threshold value.
    Type: Application
    Filed: October 13, 2022
    Publication date: June 15, 2023
    Inventor: Aihiko Numata
  • Patent number: 11665433
    Abstract: In order to suppress degradation of color reproducibility in a visible light image or a composite image obtained by compositing the visible light image and an infrared light image, an image processing apparatus obtains a first image obtained by a first image capturing element that generates a visible-range image based on incident light from an imaging optical system, estimates received light intensity of infrared light that enters the first image capturing element, and controls a white balance adjustment on the first image based on the received light intensity estimated by the estimation unit.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: May 30, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Patent number: 11656534
    Abstract: An imaging apparatus includes an image sensor, an angle controller configured to change an angle between a plane orthogonal to an optical axis of an imaging optical system and an imaging plane of the image sensor, an illuminator; and an illumination controller configured to change an optical axis direction of the illuminator based on the angle.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: May 23, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Patent number: 11637969
    Abstract: An imaging device capable of increasing a dynamic range of an image while minimizing a decrease in image quality when capturing is performed under low illuminance. An imaging device includes: a first imaging element (103) having sensitivity to visible light and configured to output a first image signal (107); a second imaging element (104) having sensitivity to infrared light and configured to output a second image signal (108A) and a third image signal (108B) acquired under an exposure condition different from that of the second image signal (108A) at a second frame rate higher than a first frame rate of the first imaging element (103); and a combination processor configured to generate a combination including the first image signal (107) output from the first imaging element (103) and the second image signal (108A) and the third image signal (108B) output from the second imaging element (104) and generate a fourth image signal (109).
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: April 25, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Aihiko Numata
  • Publication number: 20230110775
    Abstract: In an inspection system that uses terahertz waves, in order to improve the inspection precision for objects and the like, the inspection system has an illumination unit having a plurality of illumination elements that radiate terahertz waves; a camera unit that captures images of the terahertz waves that have been reflected off of an object that has been irradiated by the plurality of illumination elements; and a control unit that performs control so as to make the light emission timings for the plurality of illumination elements different.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 13, 2023
    Inventors: Aihiko Numata, Takahiro Sato, Tatsuhito Goden
  • Publication number: 20230108490
    Abstract: A camera system configured to inspect an inspection target moving in a first direction includes an illumination unit configured to irradiate the inspection target with a terahertz wave, and a camera unit disposed at a position which the terahertz wave reflected on the inspection target enters, and configured to acquire an image formed by the reflected terahertz wave. The illumination unit includes a plurality of illumination elements two-dimensionally arranged in the first direction and a second direction different from the first direction. Angles formed between directions of optical axes of the plurality of illumination elements arranged in the second direction projected onto a first plane that includes a straight line in the first direction and a straight line in the second direction and the first direction become smaller as a position approaches a center portion of the plurality of illumination elements arranged in the second direction.
    Type: Application
    Filed: August 30, 2022
    Publication date: April 6, 2023
    Inventor: Aihiko Numata
  • Publication number: 20230098566
    Abstract: A photoelectric conversion apparatus includes a pixel including a photoelectric conversion circuit configured to output a signal corresponding to photon incidence. The photoelectric conversion apparatus further includes a first measurement circuit, a second measurement circuit, a selection circuit, and an output circuit. The first measurement circuit is configured to measure the signal output from the pixel. The second measurement circuit is configured to measure a time from when the first measurement circuit starts measuring the signal to when a measured value of the first measurement circuit reaches a first threshold value. The selection circuit is configured to switch a first measurement circuit to be connected to the second measurement circuit among a plurality of the first measurement circuits. The output circuit is configured to output a value of the measured time of the second measurement circuit.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 30, 2023
    Inventor: Aihiko Numata
  • Publication number: 20230095243
    Abstract: A photoelectric conversion device including a pixel equipped with a photoelectric conversion circuit configured to output a signal in response to incidence of a photon includes a first measurement circuit, a second measurement circuit, a selection circuit, and a selection circuit. The first measurement circuit is configured to measure the signal output from the pixel. The second measurement circuit is configured to measure time from when the first measurement circuit starts measuring the signal until a measured value measured by the first measurement circuit reaches a first threshold value. The selection circuit is configured to switch a first measurement circuit to be connected to the second measurement circuit among a plurality of first measurement circuit. The control circuit is configured to control timing of switching a connection of the second measurement circuit by the selection circuit.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 30, 2023
    Inventor: Aihiko Numata
  • Publication number: 20230065051
    Abstract: In order to achieve a photoelectric conversion device that enables suppressing the lowering in tone, a photoelectric conversion device has a pixel including a photoelectric conversion element that outputs a signal according to an incident photon; a photon counter that outputs a measured value according to the number of photons incident to the pixel, a time counter that measures a time until the measured value of the photon counter reaches a first threshold after the photon counter starts the measurement, and a sensitivity adjustment unit configured to perform a sensitivity change for the pixel during a time until the measured value of the photon counter reaches the first threshold after the photon counter starts the measurement.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 2, 2023
    Inventor: Aihiko Numata
  • Publication number: 20220400199
    Abstract: An apparatus configured to obtain an event signal that indicates a position of a pixel and a time at which a luminance change has occurred includes a detection unit configured to detect an object based on the event signal, and a control unit configured to perform control to change at least one parameter in a case where a time period during which the detection unit does not detect the object is longer than a predetermined time period.
    Type: Application
    Filed: June 7, 2022
    Publication date: December 15, 2022
    Inventor: Aihiko Numata
  • Patent number: 11516390
    Abstract: An imaging apparatus that generates a wide-angle image on the basis of images from a plurality of imaging units and is capable of decreasing a likelihood of a subject becoming a double image. The imaging apparatus includes a determination unit configured to determine an imaging range of at least one of a first imaging unit and a second imaging unit on the basis of information relating to a subject designated by a user in a case in which a switching instruction from a non-composition mode to a composition mode and information relating to a subject designated by the user are received from an external device.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: November 29, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Patent number: 11423524
    Abstract: An image processing apparatus comprising, an acquisition unit configured to acquire a visible light image and an invisible light image, a determination unit configured to determine a region on an image based on the visible light image or the invisible light image acquired by the acquisition unit, and a combining unit configured to generate a composite image such that a combination ratio of the visible light image is larger than a combination ratio of the invisible light image in the region determined by the determination unit, wherein the acquisition unit acquires the visible light image for which an exposure is adjusted such that a region of the visible light image that corresponds to the region determined by the determination unit has an appropriate exposure.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: August 23, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Patent number: 11399126
    Abstract: An imaging apparatus includes a focus controller, an image sensor, an angle controller configured to change an angle of an imaging plane of the image sensor, an evaluation value acquirer configured to acquire a contrast evaluation value in a first evaluation area of the image sensor during a focus control, and to acquire a contrast evaluation value in a second evaluation area different from the first evaluation area during an angle control, and an exposure controller configured to control an exposure condition of the image sensor. The exposure controller determines a first exposure condition so as to provide a correct exposure value to the first evaluation area during the focus control, and determines a second exposure condition different from the first exposure so as to provide a correct exposure value to the second evaluation area during the angle control.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: July 26, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Aihiko Numata
  • Publication number: 20220191379
    Abstract: An image capturing apparatus includes a solid-state imaging device unit including imaging regions for each of which exposure conditions are individually controllable, a calculation unit configured to calculate, for positions on the solid-state imaging device, a movement amount between a first position on the solid-state imaging device unit, corresponding to a portion in an image captured at a present imaging, and a second position on the solid-state imaging device unit, corresponding to the same portion in an image captured for a next imaging, and calculate a direction in which the first and second positions move based on control information directed to the image capturing apparatus, and a determination unit configured to determine the exposure conditions for each of the imaging regions to be used for the next imaging based on luminance distribution information about a captured image at the present imaging, the movement amount, and the calculated direction.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 16, 2022
    Inventor: Aihiko Numata
  • Publication number: 20220150424
    Abstract: An apparatus includes an acquisition unit configured to acquire a measurement result of a number of luminance changes, based on an address event signal indicating an address of a pixel having changed in luminance and a time, and a control unit configured to cause a relationship between the time and the measurement result to be displayed. The control unit causes the measurement result to be displayed in accordance with a direction of the luminance changes.
    Type: Application
    Filed: October 20, 2021
    Publication date: May 12, 2022
    Inventor: Aihiko Numata