Patents by Inventor Kimiaki Ando

Kimiaki Ando 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).

  • Graphic display apparatus with a vector generating circuit
    Patent number: 4580236
    Abstract: A graphic display apparatus for generating a vector comprises registers for storing a value R of a vector discrimination, a positive increment P and a negative increment N, and flip-flops for storing magnitude information of .DELTA.X, .DELTA.Y, and .DELTA.X and .DELTA.Y. An address counter of a refresh memory is counted up or down in accordance with the contents of those flip-flops. A control circuit for updating the value R of the vector discrimination is also provided, so that the vector can be generated at a high speed. The registers and the flip-flops are constructed in two stages so that data for generating the next vector can be prepared while the current vector is generated.
    Type: Grant
    Filed: May 24, 1983
    Date of Patent: April 1, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Shigeo Tsujioka, Eiji Okamura, Mitsuo Ooyama, Kimiaki Ando, Seiichi Kanema, Mitsugu Yoneyama, Toshihisa Aoshima, Kiyoshi Umezawa