Patents by Inventor Kazutoyo Ishiguro

Kazutoyo Ishiguro 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: 4476499
    Abstract: A video disc recording and reproducing system in which a program is stored on a video disc to eliminate the need for the user to manually input a control program. A program and control signal is recorded in place of at least a portion of one of two audio tracks on a video disc along with video signals. The video disc player of the system includes modulator circuits which demodulate the video and audio signals from the disc, a central processing unit connected to the output of the demodulator circuit for demodulating the audio signal for detecting the control signal and program recorded on the video disc, and a memory for storing the control signal and program. The central processing unit controls the memory for storing the program and control signal at predetermined locations corresponding to the state of the control signal.
    Type: Grant
    Filed: April 25, 1983
    Date of Patent: October 9, 1984
    Assignee: Universal Pioneer Corporation
    Inventors: Hitoshi Kanamaru, Toshiyuki Amaya, Kazutoyo Ishiguro, Keiji Masaki