Patents by Inventor Yukinori Hirasawa

Yukinori Hirasawa 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).

  • Patent number: 4581654
    Abstract: A portable television reciever of the panel type, having a pocketable size, is provided with about 1/8 the number of scanning electrodes as effective T.V. picture scanning lines, and a panel type picture display device with a double matrix array in which two picture element electrodes lying on each of the signal electrodes commonly provided in the direction of the width of said scanning electrodes are disposed in opposition to each other. A display circuit is driven at a duty cycle expressed as follows: ##EQU1## where A is the number of fields constituting one frame, B is the number of horizontal periods for a video signal assigned to a scanning electrode; and C is the number of scanning lines.
    Type: Grant
    Filed: July 26, 1983
    Date of Patent: April 8, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventors: Saburo Kobayashi, Nobol Yabe, Shunji Kashiyama, Masao Kawamura, Takahiro Fuse, Yukinori Hirasawa
  • Patent number: 4562478
    Abstract: Within a case a main television circuit, a liquid crystal display panel for producing an image on a front side thereof, an EL light illuminating panel and a driving circuit which is driven to cause said EL light illuminating panel to emit light are accommodated. The EL light illuminating panel is mounted on the reverse side of said crystal display panel so as to emit light through and out of the front side of the panel.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: December 31, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventors: Yukinori Hirasawa, Osamu Kameda
  • Patent number: D376796
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: December 24, 1996
    Assignee: Casio Computer Co., Ltd.
    Inventor: Yukinori Hirasawa