Patents by Inventor Kazato Tanaka

Kazato Tanaka 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: 8363114
    Abstract: A shake correction device includes a shake detection unit detecting shake so as to generate a shake detection signal, a driving unit displacing a relative positional relationship between a lens unit and an imaging device with respect to an optical axis so as to displace the position on the imaging surface of an optical image formed on an imaging surface of the imaging device, a displacement detection unit detecting a displacement state of the correction lens unit or the imaging device, a filter processing unit performing a filter process of the shake detection signal, and a correction control unit displacing the relative positional relationship between the lens unit and the imaging device according to the filter-processed shake detection signal so as to correct the shake of the optical image on the imaging surface generated by the shake detected by the shake detection unit.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: January 29, 2013
    Assignee: Sony Corporation
    Inventor: Kazato Tanaka
  • Publication number: 20120274795
    Abstract: A shake correction device includes a shake detection unit detecting shake so as to generate a shake detection signal, a driving unit displacing a relative positional relationship between a lens unit and an imaging device with respect to an optical axis so as to displace the position on the imaging surface of an optical image formed on an imaging surface of the imaging device, a displacement detection unit detecting a displacement state of the correction lens unit or the imaging device, a filter processing unit performing a filter process of the shake detection signal, and a correction control unit displacing the relative positional relationship between the lens unit and the imaging device according to the filter-processed shake detection signal so as to correct the shake of the optical image on the imaging surface generated by the shake detected by the shake detection unit.
    Type: Application
    Filed: July 11, 2012
    Publication date: November 1, 2012
    Applicant: SONY CORPORATION
    Inventor: Kazato Tanaka
  • Patent number: 8284262
    Abstract: A shake correction device includes a shake detection unit detecting shake so as to generate a shake detection signal, a driving unit displacing a relative positional relationship between a lens unit and an imaging device with respect to an optical axis so as to displace the position on the imaging surface of an optical image formed on an imaging surface of the imaging device, a displacement detection unit detecting a displacement state of the correction lens unit or the imaging device, a filter processing unit performing a filter process of the shake detection signal, and a correction control unit displacing the relative positional relationship between the lens unit and the imaging device according to the filter-processed shake detection signal so as to correct the shake of the optical image on the imaging surface generated by the shake detected by the shake detection unit.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: October 9, 2012
    Assignee: Sony Corporation
    Inventor: Kazato Tanaka
  • Patent number: 7834931
    Abstract: When flash photography is performed, an exposure time at a time of a preliminary light emission of a flash is set as short as possible so that the appropriate amount of light required for a main light emission of the flash can be accurately computed. Before the main light emission of the flash, an exposure operation prior to preliminary light emission and an exposure operation at the time of preliminary light emission are performed. After each of these exposures, the pixel signals of individual pixels are intermittently read out at predetermined pixel intervals. The brightness levels of images captured in the exposure operation prior to preliminary light emission and the exposure operation at the time of preliminary light emission are individually detected based on the signals. The amount of light required for the main light emission of the flash is computed based on a difference between the brightness levels.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: November 16, 2010
    Assignee: Sony Corporation
    Inventors: Kazato Tanaka, Takuya Chiba, Naoki Hayashi
  • Publication number: 20100149351
    Abstract: A shake correction device includes a shake detection unit detecting shake so as to generate a shake detection signal, a driving unit displacing a relative positional relationship between a lens unit and an imaging device with respect to an optical axis so as to displace the position on the imaging surface of an optical image formed on an imaging surface of the imaging device, a displacement detection unit detecting a displacement state of the correction lens unit or the imaging device, a filter processing unit performing a filter process of the shake detection signal, and a correction control unit displacing the relative positional relationship between the lens unit and the imaging device according to the filter-processed shake detection signal so as to correct the shake of the optical image on the imaging surface generated by the shake detected by the shake detection unit.
    Type: Application
    Filed: November 18, 2009
    Publication date: June 17, 2010
    Applicant: Sony Corporation
    Inventor: Kazato Tanaka
  • Patent number: 7589784
    Abstract: An image pickup device and associated methodology are provided. The image pickup device is formed from a plurality of pixels, each of which can perform any of an exposure operation and a reading operation thereof at a timing different from that of the other, an imaging apparatus is provided, which can determine the amount of main-flashing light based on pre-flashing by a flash highly accurately. Before and during a preflash operation by a flash unit, an exposure operation is started simultaneously for all the pixels of the image pickup device 14 to form an image before and during the preflash to obtain a detected value by a detector before and during the preflash, respectively. A computation circuit computes a differential detected value obtained by subtracting the before-preflash detected value from the during-preflash detected value. The differential detected value is a detected value containing only pre-flashed light with ambient light excluded.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: September 15, 2009
    Assignee: Sony Corporation
    Inventors: Takuya Chiba, Kazato Tanaka, Naoki Hayashi
  • Publication number: 20090213247
    Abstract: When flash photography is performed, an exposure time at the time of the preliminary light emission of a flash is set as short as possible so that the appropriate amount of light required for the main light emission of the flash can be accurately computed regardless of the amount of external light. Before the main light emission of the flash, an exposure operation prior to preliminary light emission and an exposure operation at the time of preliminary light emission are performed. When the exposure operation prior to preliminary light emission is performed, after the exposure operations of all pixels included in a solid-state image pickup device have been simultaneously started at a time T91, the pixel signals of individual pixels are intermittently read out at predetermined pixel intervals at a time T92.
    Type: Application
    Filed: August 4, 2005
    Publication date: August 27, 2009
    Inventors: Kazato Tanaka, Takuya Chiba, Naoki Hayashi
  • Publication number: 20080165265
    Abstract: For an image pickup device formed from a plurality of pixels, each of which can perform any of an exposure operation and a reading operation thereof at a timing different from that of the other, an imaging apparatus is provided, which can determine the amount of main-flashing light based on pre-flashing by a flash highly accurately. Before and during a preflash operation by the flash 21, an exposure operation is started simultaneously for all the pixels of the image pickup device 13 to form an image before and during the preflash to obtain a detected value by the detector circuit 17 before and during the preflash, respectively. The computation circuit 18 computes a differential detected value obtained by subtracting the before-preflash detected value from the during-preflash detected value. The differential detected value is a detected value containing only pre-flashed light with ambient light excluded. An amount of light for main flashing is computed on the basis of the differential detected value.
    Type: Application
    Filed: June 8, 2005
    Publication date: July 10, 2008
    Applicant: Sony Corporation
    Inventors: Takuya Chiba, Kazato Tanaka, Naoki Hayashi