Patents by Inventor Masaki Hir?m?ri

Masaki Hir?m?ri 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).

  • Triangular wave generation circuit
    Patent number: 7508243
    Abstract: An accurate intermittent triangular wave signal without waveform distortion is generated by a triangular wave generation circuit 1 including a rectangular wave generation circuit 111 for generating an intermittent rectangular wave signal in which a rectangular wave interval and a direct current interval of a predetermined level are repeated; an integration circuit 12 for generating an intermittent triangular wave signal in which a triangular wave interval and a direct current interval are repeated based on a reference signal and the intermittent rectangular wave signal generated by the rectangular wave generation circuit 111; and a triangular wave correcting circuit 112 for correcting waveform distortion of the intermittent triangular wave signal based on a differential voltage between a starting point and an ending point of the direct current interval of the intermittent triangular wave signal output from the integration circuit 12.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: March 24, 2009
    Assignees: Fujitsu Ten Limited, Fujitsu Limited
    Inventors: Yasuhiro Sekiguchi, Masaki Hirōmōri