Patents by Inventor Sanae Takahashi

Sanae Takahashi 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).

  • Data acquisition circuit which changes a range of a reference potential
    Patent number: 7102693
    Abstract: An A/D converter updates its reference potential so that it coincides with an analog potential of a video signal. The A/D converter changes a variable voltage range of the reference potential during the same horizontal synchronizing period based upon a horizontal synchronizing signal. It is possible to correctly discriminate data superposed on the video signal even if an analog potential of the video signal considerably varies during the same horizontal synchronizing period.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: September 5, 2006
    Assignees: Renesas Technology Corp., Mitsubishi Electric System LSI Design Corporation
    Inventor: Sanae Takahashi
  • Data acquisition circuit
    Publication number: 20030184680
    Abstract: A variable voltage range of a reference potential is changed during the same horizontal synchronizing period. It is possible to correctly discriminate data superposed on a video signal even if an analog potential of the video signal considerably varies during the same horizontal synchronizing period.
    Type: Application
    Filed: December 17, 2002
    Publication date: October 2, 2003
    Inventor: Sanae Takahashi