Patents by Inventor Tsuyoshi Sakamoto

Tsuyoshi Sakamoto 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: 6351255
    Abstract: In a luminous display method according to a simple matrix drive system and its driving method in which luminous elements are connected at the intersections of a plurality of anode lines and a plurality of cathode lines which are arranged in matrix form, the cathode lines or the anode lines are employed as scanning lines, while the others are employed as drive lines, and while the scanning lines are scanned with a predetermined period, in synchronization with the scanning operation drive sources are connected to desired drive lines thereby to cause luminous elements to emit lights which are connected at the intersections of the scanning lines and the drive lines; in which, during a period of time before, after the scanning of an optional scanning line is accomplished, the scanning is switched over to the scanning of the next scanning line, an offset voltage is applied to charge the luminous elements.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: February 26, 2002
    Assignee: Pioneer Corporation
    Inventors: Shinichi Ishizuka, Tsuyoshi Sakamoto