Patents by Inventor Yoiti Zenno

Yoiti Zenno 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 comparing circuit and PLL circuit
    Patent number: 5577079
    Abstract: A phase comparing circuit includes a first device for generating a detection signal in response to a multi-level signal. The detection signal represents whether or not the multi-level signal is in a given level. A second device connected to the first device is operative for generating a first control signal in response to the detection signal generated by the first device and a clock signal. The first control signal represents a time interval between a leading edge of a pulse in the detection signal and a strobe point of the clock signal which immediately follows the leading edge of the pulse in the detection signal. A third device connected to the first device is operative for generating a second control signal in response to the detection signal generated by the first device and the clock signal. The second control signal represents a time interval between the strobe point of the clock signal and a trailing edge of the pulse in the detection signal.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: November 19, 1996
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Yoiti Zenno, Seiji Higurashi