Patents by Inventor Yuuzi Yamamoto

Yuuzi Yamamoto 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).

  • Motion-adaptive scanning-line conversion circuit
    Patent number: 5381183
    Abstract: A motion-adaptive scanning-line conversion circuit which converts part or the entirety of a first video signal into a second video signal. The circuit includes a data reducing circuit, such as a low pass filter and a decimator, which lowers the sampling frequency of the first video signal to reduce the amount of data in the first video signal. The conversion circuit can also include a detection circuit which detects the vertical edge of a stationary part of a picture represented by the reduced first video signal, and a motion detection circuit which determines the amount of motion of the pixels in the reduced first video signal. Based upon the detection of a vertical edge, a selection circuit selects between an output of an inter-field scanning-line conversion circuit and an intra-field scanning-line conversion circuit operating on the reduced first video signal and the first video signal, respectively.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: January 10, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Mitsuru Ishizuka, Noriyuki Yamaguchi, Hitoshi Hasegawa, Masaharu Yao, Hiroshi Ohnishi, Yuuzi Yamamoto, Masayuki Tuzi