Patents by Inventor Daisuke Hirai

Daisuke Hirai 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: 20240089599
    Abstract: A control apparatus for use in a camera system that includes a first correction member provided on one of an image pickup apparatus and a lens apparatus detachable from the image pickup apparatus, and a second correction member provided on the other of the image pickup apparatus and the lens apparatus includes a memory storing instructions, and a processor configured to execute the instructions to control image stabilization using first control configured to provide image stabilization based on a first correction ratio between image stabilization using the first correction member and image stabilization using the second correction member and to electronically correct a trapezoidal distortion in an image blur, or second control configured to provide image stabilization based on a second correction ratio between image stabilization using the first correction member and image stabilization using the second correction member without electronically correcting the trapezoidal distortion in an image blur.
    Type: Application
    Filed: September 11, 2023
    Publication date: March 14, 2024
    Inventor: DAISUKE HIRAI
  • Patent number: 11284002
    Abstract: An image pickup apparatus includes a controller. The controller controls a mover so as to move, when an optical element in the imaging optical system moves, an image sensor for the image stabilization in each of a first imaging period and a next second imaging period. The controller selects and performs one of a first image stabilization control and a second image stabilization control after the first imaging period ends, the first image stabilization control controlling the mover so as to return the image sensor to a predetermined initial position and to move the image sensor from the predetermined initial position during the second imaging period, and the second image stabilization control controlling the mover so as to hold the image sensor at a position at an end of the first imaging period and to move the image sensor from the position at the end.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: March 22, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Daisuke Hirai
  • Publication number: 20210105408
    Abstract: An image pickup apparatus includes a controller. The controller controls a mover so as to move, when an optical element in the imaging optical system moves, an image sensor for the image stabilization in each of a first imaging period and a next second imaging period. The controller selects and performs one of a first image stabilization control and a second image stabilization control after the first imaging period ends, the first image stabilization control controlling the mover so as to return the image sensor to a predetermined initial position and to move the image sensor from the predetermined initial position during the second imaging period, and the second image stabilization control controlling the mover so as to hold the image sensor at a position at an end of the first imaging period and to move the image sensor from the position at the end.
    Type: Application
    Filed: September 15, 2020
    Publication date: April 8, 2021
    Inventor: Daisuke Hirai
  • Patent number: 10567624
    Abstract: A control apparatus includes a controller configured to determine whether or not an interchangeable lens is in a static image based on an angular velocity signal output from an angular velocity detector configured to detect an angular velocity of a vibration of an interchangeable lens. The control apparatus receives, from the camera body, a command that transfers the interchangeable lens to a sleep state a predetermined time after the controller determines that the interchangeable lens is in the static state. The controller prohibits the camera body from transmitting the command that transfers the interchangeable lens to the sleep state, when the controller determines that a first offset in the angular velocity signal recorded in a recorder is to be updated.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: February 18, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Daisuke Hirai
  • Publication number: 20180302539
    Abstract: A control apparatus includes a controller configured to determine whether or not an interchangeable lens is in a static image based on an angular velocity signal output from an angular velocity detector configured to detect an angular velocity of a vibration of an interchangeable lens. The control apparatus receives, from the camera body, a command that transfers the interchangeable lens to a sleep state a predetermined time after the controller determines that the interchangeable lens is in the static state. The controller prohibits the camera body from transmitting the command that transfers the interchangeable lens to the sleep state, when the controller determines that a first offset in the angular velocity signal recorded in a recorder is to be updated.
    Type: Application
    Filed: April 3, 2018
    Publication date: October 18, 2018
    Inventor: Daisuke Hirai
  • Patent number: 9654690
    Abstract: An image stabilization apparatus includes a first filter, a second filter, and a signal selector configure to select as a correction signal for an image stabilization a signal obtained from an output of one of the first filter and the second filter which has a higher cutoff frequency, when the first filter has the third cutoff frequency or the second filter has the fourth cutoff frequency, and when a difference between a first output of the first filter and a second output of the second filter is larger than a threshold, and then to select as the correction signal a signal obtained from an output of the other of the first filter and the second filter which has a lower cutoff frequency.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: May 16, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Hirai, Koji Okada
  • Publication number: 20150189184
    Abstract: An image stabilization apparatus includes a first filter, a second filter, and a signal selector configure to select as a correction signal for an image stabilization a signal obtained from an output of one of the first filter and the second filter which has a higher cutoff frequency, when the first filter has the third cutoff frequency or the second filter has the fourth cutoff frequency, and when a difference between a first output of the first filter and a second output of the second filter is larger than a threshold, and then to select as the correction signal a signal obtained from an output of the other of the first filter and the second filter which has a lower cutoff frequency.
    Type: Application
    Filed: December 19, 2014
    Publication date: July 2, 2015
    Inventors: Daisuke Hirai, Koji Okada
  • Patent number: 8639107
    Abstract: An interchangeable lens includes a diaphragm, a driving unit for driving thereof, an operation member for setting an aperture value thereof, a switching unit for switching the operation member between permission and inhibition, and a control unit for operating, when the interchangeable lens is mounted on a camera main body including no recognition unit to recognize information on the aperture value set by the operation member, the driving unit according to a diaphragm driving command from the camera main body if the switching unit is in a state of inhibiting the operation of the operation member, and operate the driving unit according to the aperture value set by the operation member if the switching unit is in a state of permitting the operation of the operation member, and giving a response to the camera main body in a form of operating the driving unit according to the diaphragm driving command.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: January 28, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Hirai
  • Publication number: 20110229117
    Abstract: An interchangeable lens includes a diaphragm, a driving unit for driving thereof, an operation member for setting an aperture value thereof, a switching unit for switching the operation member between permission and inhibition, and a control unit for operating, when the interchangeable lens is mounted on a camera main body including no recognition unit to recognize information on the aperture value set by the operation member, the driving unit according to a diaphragm driving command from the camera main body if the switching unit is in a state of inhibiting the operation of the operation member, and operate the driving unit according to the aperture value set by the operation member if the switching unit is in a state of permitting the operation of the operation member, and giving a response to the camera main body in a form of operating the driving unit according to the diaphragm driving command.
    Type: Application
    Filed: March 15, 2011
    Publication date: September 22, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Daisuke Hirai