Patents by Inventor Hiromitsu Okuno

Hiromitsu Okuno 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).

  • Projection display apparatus having stored information for authenticating light source
    Patent number: 8523368
    Abstract: A projection image display apparatus including a detachably attachable light source unit includes: a storage means provided to the light source unit and having previously stored therein information that the light source unit is a genuine product; a determination means making a comparison with the information in the storage means to determine whether the light source unit is the genuine product; and a light source control means controlling an output of the light source unit in accordance with a result from the determination means.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: September 3, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takeshi Fujisaki, Hiromitsu Okuno
  • Gamma correction device and gamma correction method for liquid crystal display device
    Patent number: 8077188
    Abstract: A gamma correction device for a liquid crystal display device including LCD panels. The gamma correction device includes a storage device for storing gamma correction data corresponding to chiral directions of LCD panels. A chiral direction data acquisition circuit acquires chirality data on the chiral direction of a LCD panel arranged in the liquid crystal display device. A control circuit sets a gamma correction datum adapted to the chiral directions of the LCD panel arranged in the liquid crystal display device selectively from the stored gamma correction data based on the acquired chirality data. A gamma correction circuit performs a gamma correction process on image signals provided to the LCD panel using the set gamma correction datum.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: December 13, 2011
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Akio Muraji, Kazunobu Oketani, Satoshi Nakajo, Hiromitsu Okuno, Hisashi Nakamura
  • Projection Image Display Apparatus
    Publication number: 20100007856
    Abstract: A projection image display apparatus including a detachably attachable light source unit includes: a storage means provided to the light source unit and having previously stored therein information that the light source unit is a genuine product; a determination means making a comparison with the information in the storage means to determine whether the light source unit is the genuine product; and a light source control means controlling an output of the light source unit in accordance with a result from the determination means.
    Type: Application
    Filed: July 7, 2009
    Publication date: January 14, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Takeshi FUJISAKI, Hiromitsu OKUNO
  • GAMMA CORRECTION DEVICE AND GAMMA CORRECTION METHOD FOR LIQUID CRYSTAL DISPALY DEVICE
    Publication number: 20080100549
    Abstract: A gamma correction device for a liquid crystal display device including LCD panels. The gamma correction device includes a storage device for storing gamma correction data corresponding to chiral directions of LCD panels. A chiral direction data acquisition circuit acquires chirality data on the chiral direction of a LCD panel arranged in the liquid crystal display device. A control circuit sets a gamma correction datum adapted to the chiral directions of the LCD panel arranged in the liquid crystal display device selectively from the stored gamma correction data based on the acquired chirality data. A gamma correction circuit performs a gamma correction process on image signals provided to the LCD panel using the set gamma correction datum.
    Type: Application
    Filed: October 29, 2007
    Publication date: May 1, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Akio Muraji, Kazunobu Oketani, Satoshi Nakajo, Hiromitsu Okuno, Hisashi Nakamura