Patents by Inventor Hideto Kakihara

Hideto Kakihara 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).

  • Picture/audio signal transmission system
    Patent number: 4251691
    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.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: February 17, 1981
    Assignees: Nippon Telegraph and Telephone Public Corporation, Hitachi, Ltd.
    Inventors: Hideto Kakihara, Kenichi Hiratsuka, Yoji Shibata, Wataru Kosuge