Patents by Inventor Tatsuyuki Tokunaga

Tatsuyuki Tokunaga 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: 20200142286
    Abstract: The camera side mount is brought, by relative rotation with the accessory side mount, from a first state where each accessory side bayonet claw is inserted between the camera side bayonet claws into a second state where the camera side and accessory side bayonet claws engage with each other. The leaf spring biasing the camera side contact pins in the protruding direction is disposed between the camera side mount and the camera body. When the camera being in the normal position is viewed from the direction facing the camera side mount, the leaf spring extends from both sides of the mount center line, which extends from the center of the camera side mount in the direction of gravity, toward the camera side contact pins. The camera side contact pins are arranged at positions other than a position on the mount center line.
    Type: Application
    Filed: December 30, 2019
    Publication date: May 7, 2020
    Inventors: Tetsuya Nishio, Yoshihiko Konno, Tatsuyuki Tokunaga, Takashi Hasegawa, Hiroshi Kikuchi, Azusa Sugawara
  • Patent number: 10545393
    Abstract: The camera accessory is attachable to a camera by relatively rotating from a first state to a second state. Camera side contact pins include a first camera side contact pin making contact with an accessory side contact holding portion in the first state and second camera side contact pins not making contact with the accessory side contact holding portion in the first state. Accessory side contact surfaces include a first accessory side contact surface making contact with the first camera side contact pin in the second state and second accessory side contact surfaces not making contact with the first camera side contact pin in the second state. A pitch between the first and second accessory side contact surfaces adjacent thereto is larger than a pitch between the second accessory side contact surfaces adjacent to each other.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: January 28, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Nishio, Azusa Sugawara, Hiroshi Kikuchi, Yoshihiko Konno, Tatsuyuki Tokunaga, Takashi Hasegawa
  • Patent number: 10527912
    Abstract: The camera side mount is brought, by relative rotation with the accessory side mount, from a first state where each accessory side bayonet claw is inserted between the camera side bayonet claws into a second state where the camera side and accessory side bayonet claws engage with each other. The leaf spring biasing the camera side contact pins in the protruding direction is disposed between the camera side mount and the camera body. When the camera being in the normal position is viewed from the direction facing the camera side mount, the leaf spring extends from both sides of the mount center line, which extends from the center of the camera side mount in the direction of gravity, toward the camera side contact pins. The camera side contact pins are arranged at positions other than a position on the mount center line.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: January 7, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tetsuya Nishio, Yoshihiko Konno, Tatsuyuki Tokunaga, Takashi Hasegawa, Hiroshi Kikuchi, Azusa Sugawara
  • Publication number: 20190174035
    Abstract: The present invention provides the following camera. A first camera-side contact pin is a pin corresponding to detection of a signal change caused by coupling of a camera accessory. A second camera-side contact pin is a pin corresponding to supply of power for communication with the coupled camera accessory. A third camera-side contact pin is a pin corresponding to supply of a driving force to an actuator of the camera accessory. The first, second, and third camera-side contact pins are disposed in such a manner that, when a camera-side mount shifts from a first state to a second state, the third camera-side contact pin contacts first and second accessory-side contact surfaces, the second camera-side contact pin contacts the first accessory-side contact surface, and the first camera-side contact pin does not contact the second and third accessory-side contact surfaces.
    Type: Application
    Filed: January 23, 2019
    Publication date: June 6, 2019
    Inventors: Tatsuyuki Tokunaga, Takashi Hasegawa, Tetsuya Nishio, Yoshihiko Konno, Hiroshi Kikuchi, Azusa Sugawara
  • Patent number: 10244152
    Abstract: The present invention provides the following camera. A first camera-side contact pin is a pin corresponding to detection of a signal change caused by coupling of a camera accessory. A second camera-side contact pin is a pin corresponding to supply of power for communication with the coupled camera accessory. A third camera-side contact pin is a pin corresponding to supply of a driving force to an actuator of the camera accessory. The first, second, and third camera-side contact pins are disposed in such a manner that, when a camera-side mount shifts from a first state to a second state, the third camera-side contact pin contacts first and second accessory-side contact surfaces, the second camera-side contact pin contacts the first accessory-side contact surface, and the first camera-side contact pin does not contact the second and third accessory-side contact surfaces.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: March 26, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuyuki Tokunaga, Takashi Hasegawa, Tetsuya Nishio, Yoshihiko Konno, Hiroshi Kikuchi, Azusa Sugawara
  • Publication number: 20180373128
    Abstract: The camera accessory is attachable to a camera by relatively rotating from a first state to a second state. Camera side contact pins include a first camera side contact pin making contact with an accessory side contact holding portion in the first state and second camera side contact pins not making contact with the accessory side contact holding portion in the first state. Accessory side contact surfaces include a first accessory side contact surface making contact with the first camera side contact pin in the second state and second accessory side contact surfaces not making contact with the first camera side contact pin in the second state. A pitch between the first and second accessory side contact surfaces adjacent thereto is larger than a pitch between the second accessory side contact surfaces adjacent to each other.
    Type: Application
    Filed: August 1, 2018
    Publication date: December 27, 2018
    Inventors: Tetsuya Nishio, Azusa Sugawara, Hiroshi Kikuchi, Yoshihiko Konno, Tatsuyuki Tokunaga, Takashi Hasegawa
  • Publication number: 20170289415
    Abstract: The present invention provides the following camera. A first camera-side contact pin is a pin corresponding to detection of a signal change caused by coupling of a camera accessory. A second camera-side contact pin is a pin corresponding to supply of power for communication with the coupled camera accessory. A third camera-side contact pin is a pin corresponding to supply of a driving force to an actuator of the camera accessory. The first, second, and third camera-side contact pins are disposed in such a manner that, when a camera-side mount shifts from a first state to a second state, the third camera-side contact pin contacts first and second accessory-side contact surfaces, the second camera-side contact pin contacts the first accessory-side contact surface, and the first camera-side contact pin does not contact the second and third accessory-side contact surfaces.
    Type: Application
    Filed: June 19, 2017
    Publication date: October 5, 2017
    Inventors: Tatsuyuki Tokunaga, Takashi Hasegawa, Tetsuya Nishio, Yoshihiko Konno, Hiroshi Kikuchi, Azusa Sugawara
  • Patent number: 9729769
    Abstract: The present invention provides the following camera. A first camera-side contact pin is a pin corresponding to detection of a signal change caused by coupling of a camera accessory. A second camera-side contact pin is a pin corresponding to supply of power for communication with the coupled camera accessory. A third camera-side contact pin is a pin corresponding to supply of a driving force to an actuator of the camera accessory. The first, second, and third camera-side contact pins are disposed in such a manner that, when a camera-side mount shifts from a first state to a second state, the third camera-side contact pin contacts first and second accessory-side contact surfaces, the second camera-side contact pin contacts the first accessory-side contact surface, and the first camera-side contact pin does not contact the second and third accessory-side contact surfaces.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: August 8, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuyuki Tokunaga, Takashi Hasegawa, Tetsuya Nishio, Yoshihiko Konno, Hiroshi Kikuchi, Azusa Sugawara
  • Patent number: 9684229
    Abstract: The camera accessory is attachable to a camera. The camera accessory includes an accessory mount to be detachably coupled with a camera mount). The accessory mount is provided with accessory bayonet claws and brought, by relative rotation with the camera mount, from a first state in which each of the accessory bayonet claws is inserted between camera bayonet claws provided in the camera mount into a second state in which the accessory bayonet claws engage with the camera bayonet claws to complete coupling of the accessory and camera mounts. The camera accessory is further provided with accessory contact surfaces arranged in a relative rotation direction of the mounts in the accessory mount. The accessory contact surfaces includes a first accessory contact surface used for indicating type of the camera accessory and is provided adjacent to the accessory bayonet claw.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: June 20, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tetsuya Nishio, Yoshihiko Konno, Tatsuyuki Tokunaga, Takashi Hasegawa, Azusa Sugawara, Hiroshi Kikuchi
  • Patent number: 9638987
    Abstract: The camera side mount is brought, by relative rotation with the accessory side mount, from a first state where each accessory side bayonet claw is inserted between the camera side bayonet claws into a second state where the camera side and accessory side bayonet claws engage with each other. The leaf spring biasing the camera side contact pins in the protruding direction is disposed between the camera side mount and the camera body. When the camera being in the normal position is viewed from the direction facing the camera side mount, the leaf spring extends from both sides of the mount center line, which extends from the center of the camera side mount in the direction of gravity, toward the camera side contact pins. The camera side contact pins are arranged at positions other than a position on the mount center line.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: May 2, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Nishio, Yoshihiko Konno, Tatsuyuki Tokunaga, Takashi Hasegawa, Hiroshi Kikuchi, Azusa Sugawara
  • Publication number: 20170075200
    Abstract: The camera side mount is brought, by relative rotation with the accessory side mount, from a first state where each accessory side bayonet claw is inserted between the camera side bayonet claws into a second state where the camera side and accessory side bayonet claws engage with each other. The leaf spring biasing the camera side contact pins in the protruding direction is disposed between the camera side mount and the camera body. When the camera being in the normal position is viewed from the direction facing the camera side mount, the leaf spring extends from both sides of the mount center line, which extends from the center of the camera side mount in the direction of gravity, toward the camera side contact pins. The camera side contact pins are arranged at positions other than a position on the mount center line.
    Type: Application
    Filed: November 8, 2016
    Publication date: March 16, 2017
    Inventors: Tetsuya Nishio, Yoshihiko Konno, Tatsuyuki Tokunaga, Takashi Hasegawa, Hiroshi Kikuchi, Azusa Sugawara
  • Patent number: 9453984
    Abstract: A first lens unit performing communication with an image pickup apparatus with a first voltage and a second lens unit performing communication with the image pickup apparatus with a second voltage are selectively attached to the image pickup apparatus. The image pickup apparatus includes a controller configured to operate with a third voltage different from at least one of the first and second voltages to output a signal for the communication with the first and second lens units, and a determiner configured to determine the type of the lens unit attached to the image pickup apparatus. The controller is configured to produce, as a voltage of the signal for the communication, from the third voltage, one of the first and second voltages corresponding to a determination result of the determiner.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: September 27, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Hasegawa, Tatsuyuki Tokunaga, Tetsuya Nishio, Azusa Sugawara, Hiroshi Kikuchi, Yoshihiko Konno
  • Publication number: 20150346455
    Abstract: A first lens unit performing communication with an image pickup apparatus with a first voltage and a second lens unit performing communication with the image pickup apparatus with a second voltage are selectively attached to the image pickup apparatus. The image pickup apparatus includes a controller configured to operate with a third voltage different from at least one of the first and second voltages to output a signal for the communication with the first and second lens units, and a determiner configured to determine the type of the lens unit attached to the image pickup apparatus. The controller is configured to produce, as a voltage of the signal for the communication, from the third voltage, one of the first and second voltages corresponding to a determination result of the determiner.
    Type: Application
    Filed: August 10, 2015
    Publication date: December 3, 2015
    Inventors: Takashi Hasegawa, Tatsuyuki Tokunaga, Tetsuya Nishio, Azusa Sugawara, Hiroshi Kikuchi, Yoshihiko Konno
  • Patent number: 9164256
    Abstract: A first lens unit performing communication with an image pickup apparatus with a first voltage and a second lens unit performing communication with the image pickup apparatus with a second voltage are selectively attached to the image pickup apparatus. The image pickup apparatus includes a controller configured to operate with a third voltage different from at least one of the first and second voltages to output a signal for the communication with the first and second lens units, and a determiner configured to determine the type of the lens unit attached to the image pickup apparatus. The controller is configured to produce, as a voltage of the signal for the communication, from the third voltage, one of the first and second voltages corresponding to a determination result of the determiner.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: October 20, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Hasegawa, Tatsuyuki Tokunaga, Tetsuya Nishio, Azusa Sugawara, Hiroshi Kikuchi, Yoshihiko Konno
  • Patent number: 9151929
    Abstract: A first lens unit performing communication with an image pickup apparatus with a first voltage and a second lens unit performing communication with the image pickup apparatus with a second voltage are selectively attached to the image pickup apparatus. The image pickup apparatus includes a controller configured to operate with a third voltage different from at least one of the first and second voltages to output a signal for the communication with the first and second lens units, and a determiner configured to determine the type of the lens unit attached to the image pickup apparatus. The controller is configured to produce, as a voltage of the signal for the communication, from the third voltage, one of the first and second voltages corresponding to a determination result of the determiner.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: October 6, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Hasegawa, Tatsuyuki Tokunaga, Tetsuya Nishio, Azusa Sugawara, Hiroshi Kikuchi, Yoshihiko Konno
  • Publication number: 20150212295
    Abstract: A first lens unit performing communication with an image pickup apparatus with a first voltage and a second lens unit performing communication with the image pickup apparatus with a second voltage are selectively attached to the image pickup apparatus. The image pickup apparatus includes a controller configured to operate with a third voltage different from at least one of the first and second voltages to output a signal for the communication with the first and second lens units, and a determiner configured to determine the type of the lens unit attached to the image pickup apparatus. The controller is configured to produce, as a voltage of the signal for the communication, from the third voltage, one of the first and second voltages corresponding to a determination result of the determiner.
    Type: Application
    Filed: April 10, 2015
    Publication date: July 30, 2015
    Inventors: Takashi Hasegawa, Tatsuyuki Tokunaga, Tetsuya Nishio, Azusa Sugawara, Hiroshi Kikuchi, Yoshihiko Konno
  • Publication number: 20150049244
    Abstract: The present invention provides the following camera. A first camera-side contact pin is a pin corresponding to detection of a signal change caused by coupling of a camera accessory. A second camera-side contact pin is a pin corresponding to supply of power for communication with the coupled camera accessory. A third camera-side contact pin is a pin corresponding to supply of a driving force to an actuator of the camera accessory. The first, second, and third camera-side contact pins are disposed in such a manner that, when a camera-side mount shifts from a first state to a second state, the third camera-side contact pin contacts first and second accessory-side contact surfaces, the second camera-side contact pin contacts the first accessory-side contact surface, and the first camera-side contact pin does not contact the second and third accessory-side contact surfaces.
    Type: Application
    Filed: April 3, 2013
    Publication date: February 19, 2015
    Inventors: Tatsuyuki Tokunaga, Takashi Hasegawa, Tetsuya Nishio, Yoshihiko Konno, Hiroshi Kikuchi, Azusa Sugawara
  • Publication number: 20130287388
    Abstract: The camera accessory is attachable to a camera. The camera accessory includes an accessory mount to be detachably coupled with a camera mount). The accessory mount is provided with accessory bayonet claws and brought, by relative rotation with the camera mount, from a first state in which each of the accessory bayonet claws is inserted between camera bayonet claws provided in the camera mount into a second state in which the accessory bayonet claws engage with the camera bayonet claws to complete coupling of the accessory and camera mounts. The camera accessory is further provided with accessory contact surfaces arranged in a relative rotation direction of the mounts in the accessory mount. The accessory contact surfaces includes a first accessory contact surface used for indicating type of the camera accessory and is provided adjacent to the accessory bayonet claw.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 31, 2013
    Inventors: Tetsuya Nishio, Yoshihiko Konno, Tatsuyuki Tokunaga, Takashi Hasegawa, Azusa Sugawara, Hiroshi Kikuchi
  • Publication number: 20130265657
    Abstract: A first lens unit performing communication with an image pickup apparatus with a first voltage and a second lens unit performing communication with the image pickup apparatus with a second voltage are selectively attached to the image pickup apparatus. The image pickup apparatus includes a controller configured to operate with a third voltage different from at least one of the first and second voltages to output a signal for the communication with the first and second lens units, and a determiner configured to determine the type of the lens unit attached to the image pickup apparatus. The controller is configured to produce, as a voltage of the signal for the communication, from the third voltage, one of the first and second voltages corresponding to a determination result of the determiner.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 10, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takashi Hasegawa, Tatsuyuki Tokunaga, Tetsuya Nishio, Azusa Sugawara, Hiroshi Kikuchi, Yoshihiko Konno
  • Patent number: RE44857
    Abstract: An image sensing apparatus, having an image sensor for sensing an image of an object and an analog-digital converter which operates at a predetermined frequency and converts an analog signal read from the image sensor to a digital signal, controls the relationship between a phase of the analog signal read from the image sensor and a phase of a timing signal for operating the analog-digital converter in accordance with the peripheral condition.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: April 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuyuki Tokunaga