Patents by Inventor Kiyohiro Yuuki

Kiyohiro Yuuki 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).

  • Coding method for facsimile signal
    Patent number: 4258392
    Abstract: A coding method for a two-level facsimile signal by the use of the two-dimensional coding principle, in which when successively coding addresses of a facsimile signal representative of the positions of information change picture elements, each having a binary level different from that of an immediately preceding picutre element, the above-mentioned addresses on each coding scanning line are classified into three modes that are determined by the states of information change picture elements on the coding scanning line and on a reference scanning line immediately preceding the coding scanning line. The above two-dimensinal coding principle and a one-dimensional coding principle may be adaptively adopted to shorten the transmission time and to lessen the influence of a transmission error.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: March 24, 1981
    Assignees: Kokusai Denshin Denwa Kabushiki Kaisha, Nippon Telegraph and Telephone Public Corporation
    Inventors: Yasuhiro Yamazaki, Yasushi Wakahara, Kiyohiro Yuuki, Toyomichi Yamada
  • Transmission method and system for facsimile signal
    Patent number: 4245257
    Abstract: A transmission method for a facsimile signal by the use of the two-dimensional coding principle, in which when successively coding addresses of a facsimile signal representative of the positions of information change picture elements, each having a binary value different from that of an immediately preceding picture element, the above-mentioned addresses on each coding scanning line are classified into three modes that are determined by the states of information change picture elements on the coding scanning line and on a reference scanning line immediately preceding the coding scanning line. The above two-dimensional coding principle and a one-dimensional coding principle may be adaptively adopted to shorten the transmission time and to lessen the influence of a transmission error.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: January 13, 1981
    Assignee: Kokusai Denshin Denwa Kabushiki Kaisha
    Inventors: Yasuhiro Yamazaki, Yasushi Wakahara, Kiyohiro Yuuki, Toyomichi Yamada