Patents by Inventor Shigetoshi Okada

Shigetoshi Okada 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: 4734765
    Abstract: A center-to-end type information service system utilizing the public telephone networks that are fundamental communication media of nation-wide scale is disclosed in which desired information is requested from the terminal side to the center by means of a telephone set or simplified keyboard and then delivered to and received by a TV receiver. A part of the center functions is transferred together with the exchange function to a subcenter located near the terminal. Thus, the length of transmission path connecting the center to terminals becomes shorter and the cost of the whole system can be cut down. A simplified character generator is provided in the subcenter, thereby diminishing traffic of the video network.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: March 29, 1988
    Assignees: Nippon Telegraph & Telephone Public Corp., Hitachi, Ltd.
    Inventors: Shigetoshi Okada, Shoichi Matsuhashi, Yoji Shibata, Wataru Kosuge