Patents by Inventor Yukinori Kamizono

Yukinori Kamizono 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).

  • Phase-difference detecting circuit and method of reducing power consumption in a PLL system
    Patent number: 5103192
    Abstract: A phase comparison circuit includes phase comparison device for generating an output signal corresponding to the difference in phase between a first input signal and a second input signal. The phase comparison device has an active mode, and a standby mode in which power consumption is reduced. A phase-difference detecting device is connected to the phase comparison device for outputting a control signal when the phase difference between the first and second input signals is smaller than a predetermined value. The phase comparison device is switched from the standby mode to the active mode in response to the control signal.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: April 7, 1992
    Assignees: Fujitsu Limited, Kyushu Fujitsu Electronics Limited
    Inventors: Shinichi Sekine, Fumitaka Asami, Yukinori Kamizono