Patents by Inventor Kousuke Tsuchihashi

Kousuke Tsuchihashi 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: 9229244
    Abstract: An image-blur correction device includes a drive-current output unit that outputs a first drive current for driving a first correction mechanism for correcting image blur in a first direction orthogonal to an optical axis and a second drive current for driving a second correction mechanism for correcting image blur in a second direction orthogonal to the optical axis and the first direction; and a drive-current limiting unit that limits the first drive current to a first limit value, limits the second drive current to a second limit value, limits a total value of the first and second drive currents to a third limit value smaller than a total value of the first and second limit values, varies the first limit value by changing a power-supply time of the first drive current, and varies the second limit value by changing a power-supply time of the second drive current.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 5, 2016
    Assignee: SONY CORPORATION
    Inventors: Tatsuyuki Nakayama, Kousuke Tsuchihashi, Masahide Yamasaki
  • Patent number: 9225903
    Abstract: A lens unit 20 including an imaging optical system 31 and an imaging unit 33 to generate an image signal of an imaged image is supported rotatably in a yawing direction and in a pitching direction. Based on a shake which is applied to the lens unit 20 and is detected by a shake detection unit 61, a barycentric position of the lens unit 20 which position is calculated by a barycentric position calculation unit 62, and a position of the lens unit 20 which position is detected by a position detection unit 46, a driving operation by a drive unit 45 to perform rotation driving of the lens unit 20 in the yawing direction and in the pitching direction is controlled and image blur correction of the imaged image is performed. Even when the barycentric position of the lens unit varies due to a focus adjusting operation, a zooming operation, or the like, it becomes possible to perform optimal image blur correction and to improve performance in image blur correction.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: December 29, 2015
    Assignee: SONY CORPORATION
    Inventors: Tatsuyuki Nakayama, Hideo Takagi, Kousuke Tsuchihashi
  • Patent number: 9185298
    Abstract: Provided is an image blur correction apparatus including a lens unit having an imaging optical system and an imaging unit configured to generate an image signal of a captured image, a blur detection unit configured to detect blurring occurring in the lens unit, a first correction unit configured to perform image blur correction by turning the lens unit in a first direction and in a second direction, a second correction unit configured to perform image blur correction on a captured image obtained by the imaging optical system, and an image blur correction control unit configured to drive the first correction unit and the second correction unit based on blurring detected by the blur detection unit.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: November 10, 2015
    Assignee: SONY CORPORATION
    Inventors: Tatsuyuki Nakayama, Kousuke Tsuchihashi, Hideo Takagi
  • Publication number: 20150195458
    Abstract: A lens unit 20 including an imaging optical system 31 and an imaging unit 33 to generate an image signal of an imaged image is supported rotatably in a yawing direction and in a pitching direction. Based on a shake which is applied to the lens unit 20 and is detected by a shake detection unit 61, a barycentric position of the lens unit 20 which position is calculated by a barycentric position calculation unit 62, and a position of the lens unit 20 which position is detected by a position detection unit 46, a driving operation by a drive unit 45 to perform rotation driving of the lens unit 20 in the yawing direction and in the pitching direction is controlled and image blur correction of the imaged image is performed. Even when the barycentric position of the lens unit varies due to a focus adjusting operation, a zooming operation, or the like, it becomes possible to perform optimal image blur correction and to improve performance in image blur correction.
    Type: Application
    Filed: May 15, 2013
    Publication date: July 9, 2015
    Applicant: Sony Corporation
    Inventors: Tatsuyuki Nakayama, Hideo Takagi, Kousuke Tsuchihashi
  • Publication number: 20140176742
    Abstract: An image-blur correction device includes a drive-current output unit that outputs a first drive current for driving a first correction mechanism for correcting image blur in a first direction orthogonal to an optical axis and a second drive current for driving a second correction mechanism for correcting image blur in a second direction orthogonal to the optical axis and the first direction; and a drive-current limiting unit that limits the first drive current to a first limit value, limits the second drive current to a second limit value, limits a total value of the first and second drive currents to a third limit value smaller than a total value of the first and second limit values, varies the first limit value by changing a power-supply time of the first drive current, and varies the second limit value by changing a power-supply time of the second drive current.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 26, 2014
    Applicant: Sony Corporation
    Inventors: Tatsuyuki Nakayama, Kousuke Tsuchihashi, Masahide Yamasaki
  • Publication number: 20130342715
    Abstract: Provided is an image blur correction apparatus including a lens unit having an imaging optical system and an imaging unit configured to generate an image signal of a captured image, a blur detection unit configured to detect blurring occurring in the lens unit, a first correction unit configured to perform image blur correction by turning the lens unit in a first direction and in a second direction, a second correction unit configured to perform image blur correction on a captured image obtained by the imaging optical system, and an image blur correction control unit configured to drive the first correction unit and the second correction unit based on blurring detected by the blur detection unit.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 26, 2013
    Inventors: Tatsuyuki Nakayama, Kousuke Tsuchihashi, Hideo Takagi
  • Patent number: 7962024
    Abstract: A blur correcting device includes a shake detecting unit configured to detect a shake and output a detection signal indicating a result of the detection; a drive unit configured to displace a relative positional relationship between a lens unit and an image pickup element relative to an optical axis such that a position of an optical image formed on an image pickup surface of the image pickup element is displaced on the image pickup surface; and a control unit configured to increase a displacement range when the amount of shake indicated by the detection signal is larger than a predetermined level, displace the relative positional relationship between the lens unit and the image pickup element within the increased displacement range in accordance with the detection signal, and thereby correct a blur of the optical image on the image pickup surface caused by the shake detected by the shake detecting unit.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: June 14, 2011
    Assignee: Sony Corporation
    Inventor: Kousuke Tsuchihashi
  • Publication number: 20100150537
    Abstract: A blur correcting device includes a shake detecting unit configured to detect a shake and output a detection signal indicating a result of the detection; a drive unit configured to displace a relative positional relationship between a lens unit and an image pickup element relative to an optical axis such that a position of an optical image formed on an image pickup surface of the image pickup element is displaced on the image pickup surface; and a control unit configured to increase a displacement range when the amount of shake indicated by the detection signal is larger than a predetermined level, displace the relative positional relationship between the lens unit and the image pickup element within the increased displacement range in accordance with the detection signal, and thereby correct a blur of the optical image on the image pickup surface caused by the shake detected by the shake detecting unit.
    Type: Application
    Filed: November 16, 2009
    Publication date: June 17, 2010
    Applicant: Sony Corporation
    Inventor: Kousuke Tsuchihashi