Patents by Inventor Shunji Oota

Shunji Oota 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).

  • Display apparatus and display driving method for enhancing grayscale display capable of low luminance portion without increasing driving time
    Patent number: 8456385
    Abstract: A driving method for a plasma display apparatus having address electrodes, scan electrodes and common electrodes and displaying one field of image by using subfields is provided. The driving method includes one specific subfield is arranged to be turned ON early in the one field and always turned ON at luminance level higher than input luminance level “0”, and the specific subfield has a least luminance weight and does not have resetting.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: June 4, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Ayahito Kojima, Shinsuke Tanaka, Shunji Oota
  • DISPLAY APPARATUS AND DISPLAY DRIVING METHOD FOR ENHANCING GRAYSCALE DISPLAY CAPABLE OF LOW LUMINANCE PORTION WITHOUT INCREASING DRIVING TIME
    Publication number: 20100188442
    Abstract: A driving method for a plasma display apparatus having address electrodes, scan electrodes and common electrodes and displaying one field of image by using subfields is provided. The driving method includes one specific subfield is arranged to be turned ON early in the one field and always turned ON at luminance level higher than input luminance level “0”, and the specific subfield has a least luminance weight and does not have resetting.
    Type: Application
    Filed: March 18, 2010
    Publication date: July 29, 2010
    Applicant: Fujitsu Hitachi Plasma Display Limited
    Inventors: Ayahito KOJIMA, Shinsuke Tanaka, Shunji Oota
  • Display apparatus and display driving method for enhancing grayscale display capable of low luminance portion without increasing driving time
    Patent number: 7710359
    Abstract: A display apparatus driving method for a field time division type display apparatus displays grayscale by combining a plurality of subfields into which one field has been divided. Each subfield includes a resetting, an addressing, and a sustaining. At least one extra subfield is additionally provided which does not have a resetting, and which stays always ON with a luminance level higher than a prescribed input luminance level.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: May 4, 2010
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Ayahito Kojima, Shinsuke Tanaka, Shunji Oota
  • Plasma display apparatus
    Patent number: 7460088
    Abstract: A plasma display apparatus, in which the display quality of a dark image is improved and which uses a subfield method, has been disclosed. The plasma display apparatus comprises a plasma display panel, a sustain pulse cycle changing means for detecting the display load ratio of each subfield and changing the sustain pulse cycle of each subfield according to the display load ratio, and an adaptive subfield number changing means for calculating a vacant time in a display frame generated by changing the sustain pulse cycle, judging whether a subfield can be added according to the vacant time, and determining the number of subfields in the display frame.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: December 2, 2008
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Masanori Takeuchi, Yasuji Noguchi, Yutaka Chiaki, Shunji Oota
  • Plasma display apparatus
    Publication number: 20050231444
    Abstract: A plasma display apparatus, in which the display quality of a dark image is improved and which uses a subfield method, has been disclosed. The plasma display apparatus comprises a plasma display panel, a sustain pulse cycle changing means for detecting the display load ratio of each subfield and changing the sustain pulse cycle of each subfield according to the display load ratio, and an adaptive subfield number changing means for calculating a vacant time in a display frame generated by changing the sustain pulse cycle, judging whether a subfield can be added according to the vacant time, and determining the number of subfields in the display frame.
    Type: Application
    Filed: January 25, 2005
    Publication date: October 20, 2005
    Applicant: Fujitsu Hitachi Plasma Display Limited
    Inventors: Masanori Takeuchi, Yasuji Noguchi, Yutaka Chiaki, Shunji Oota
  • Display apparatus and display driving method for enhancing grayscale display capable of low luminance portion without increasing driving time
    Publication number: 20050162349
    Abstract: A display apparatus driving method for a field time division type display apparatus displays grayscale by combining a plurality of subfields into which one field has been divided. Each subfield includes a resetting, an addressing, and a sustaining. At least one extra subfield is additionally provided which does not have a resetting, and which stays always ON with a luminance level higher than a prescribed input luminance level.
    Type: Application
    Filed: October 21, 2004
    Publication date: July 28, 2005
    Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITED
    Inventors: Ayahito Kojima, Shinsuke Tanaka, Shunji Oota