Patents by Inventor Sotaro Hiroshima

Sotaro Hiroshima 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).

  • Radio paging system
    Patent number: 5751935
    Abstract: The detection of any transmission error having developed between a central station and a transmitting station, and the start of a counterplan to the transmission error are realized by a simple construction. The central station transmits messages to which error correcting codes for correcting the transmission errors of the respective messages are affixed, to receivers via the transmitting stations through radio communications. Each of the receivers corrects the transmission error which has developed in relation to the message received through the radio communications, by the use of the error correcting code affixed to the particular message.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: May 12, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Takafumi Kojima, Sotaro Hiroshima, Toshiro Suzuki, Yasuo Kogure, Akio Yasuda