Patents by Inventor Sunao Eto

Sunao Eto 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: 6288697
    Abstract: According to the present invention, a method for driving a display device, including a display panel having a plurality of pixels and a plurality of data lines connected to the respective pixels, is provided. The method includes the steps of: sampling data in a first horizontal interval; storing the data sampled in the first horizontal interval; updating output data based on the stored data in the middle of sampling next data in a second horizontal interval next to the first horizontal interval; and outputting a voltage corresponding to the output data to a corresponding one of the data lines.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: September 11, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Sunao Eto, Hisao Okada
  • Patent number: 5784041
    Abstract: The driving circuit of this invention for a display device for displaying a plurality of gray levels in accordance with digital data including a first bit portion and a second bit portion includes: a first voltage dividing circuit for dividing a plurality of gray level voltages so as to generate a plurality of first interpolation voltages between the plurality of gray level voltages; a first selection circuit for selecting a first voltage and a second voltage different from the first voltage among the plurality of gray level voltages and the plurality of first interpolation voltages in accordance with the first bit portion of the digital data; a second voltage dividing circuit for dividing the first voltage and the second voltage so as to generate a plurality of second interpolation voltages between the first voltage and the second voltage; and a second selection circuit for selecting one voltage among at least one of the first voltage and the second voltage and the plurality of second interpolation voltages.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: July 21, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hisao Okada, Sunao Eto, Mikio Hashimoto