Patents by Inventor Tashihiko Tsuru

Tashihiko Tsuru 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: 4468687
    Abstract: An apparatus for reproducing television synchronizing signals receives an input composite television video signal, separates synchronizing signals therefrom, and utilizes a separated horizontal synchronizing signal to separate a burst signal from the input. The burst signal is then provided through a phase-locked loop including a voltage controlled oscillator (VCO) and frequency divider. The separated horizontal sync signal is also provided through a phase-locked loop including a VCO and frequency divider. During reception of a color TV signal, a synchronizing signal generator receives the output of the first VCO as its clock and receives a horizontal reset pulse derived from the reproduced subcarrier output of the first phase-locked loop and the output of the second phase-locked loop, with the output of the frequency divider in the second phase-locked loop being provided back to its phase detector.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: August 28, 1984
    Assignee: Nippon Electric Co., Ltd.
    Inventors: Kazushi Munezawa, Tashihiko Tsuru