Patents by Inventor Akihisa Osawa

Akihisa Osawa 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).

  • Video theater system
    Patent number: 4942488
    Abstract: In a video theater system, a video projector and a cassette video player are employed for playing a movie. The cassette video player employed in this system uses a video cassette which has various control signals together with a movie program on a video tape. These control signals are recorded at vertical blanking intervals and manage automatic system operation of the video theater.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: July 17, 1990
    Assignee: Sony Corporation
    Inventor: Akihisa Osawa
  • Video cassette designed for video theater use
    Patent number: 4663674
    Abstract: A video theater system employs a rental video cassette which has extra ribs on the periphery thereof for inhibiting an unfair use in conjunction with a conventional cassette VTR, and in which an ID code is also superimposed on video signals on tape within the cassette so that it is possible to determine a particular video theater from which a video program is leaked by detecting the ID code from a copied cassette.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: May 5, 1987
    Assignee: Sony Corporation
    Inventor: Akihisa Osawa