Patents by Inventor Takezo Murakami

Takezo Murakami 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 device capable of reducing burn-in on display panel
    Patent number: 7397497
    Abstract: A display device having a prolonged lifetime by preventing deterioration of image quality by reducing a burn-in is provided. A display device includes a still image region detecting unit for detecting still image data from video data, a detecting unit for detecting, as an edge portion, a pair of pixels having a level difference of image data larger than a set level difference, of a plurality of pair of adjacent pixels for the still image data, and a level adjusting unit for adjusting a level of the image data of a group of pixels including the edge portion and arranged consecutively and outputting the image data after the adjustment to a driving unit. The level adjusting unit adds/subtracts a random noise to/from the image data of the group of pixels.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: July 8, 2008
    Assignee: Pioneer Plasma Display Corporation
    Inventors: Takezo Murakami, Yoshiharu Simizu
  • Display device
    Publication number: 20050195280
    Abstract: A display device having a prolonged lifetime by preventing deterioration of image quality by reducing a burn-in is provided. A display device includes a still image region detecting unit for detecting still image data from video data, a detecting unit for detecting, as an edge portion, a pair of pixels having a level difference of image data larger than a set level difference, of a plurality of pair of adjacent pixels for the still image data, and a level adjusting unit for adjusting a level of the image data of a group of pixels including the edge portion and arranged consecutively and outputting the image data after the adjustment to a driving unit. The level adjusting unit adds/subtracts a random noise to/from the image data of the group of pixels.
    Type: Application
    Filed: February 28, 2005
    Publication date: September 8, 2005
    Inventors: Takezo Murakami, Yoshiharu Simizu