Patents by Inventor Yasushi Sano

Yasushi Sano 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).

  • Vertical synchronizing signal detector for television video signal reception
    Patent number: 4198659
    Abstract: A television video vertical sync detector which produces a vertical sync pulse. This detector includes a separating circuit for the production of horizontal sync pulses, equalizing pulses and vertical sync pulses, and a phase control oscillator. The phase control oscillator includes a phase comparator low pass filter, a voltage control oscillator for generating clock pulses, a division circuit and a delay circuit. A sampling circuit is used to generate the final vertical sync pulse.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: April 15, 1980
    Assignee: Nippon Electric Co., Ltd.
    Inventors: Hiroshi Iijima, Yasushi Sano