Patents by Inventor Toshihisa Hane

Toshihisa Hane 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).

  • System and method of transmitting variable length packet by sequential allocation of permission and monitoring response detection time period
    Patent number: 7394824
    Abstract: In a system including a parent station and a plurality of child stations connected only to the parent station, which is unable to detect a response among the plurality of child stations, the parent station includes a transmission permission sequential allocation mechanism for giving transmission permission sequentially and a first timer for monitoring a first period which is a response detection time period. The child station includes a transmission permission detection mechanism for detecting that the identifier sent by the parent station is directed to the own station. Each of the child stations transmits data in a band period when the child station is permitted to communicate. When the parent station does not receive a response from the child station permitted to communicate within the first period, the parent station permits a next child station to communicate.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: July 1, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Toshihisa Hane
  • Packet communication system, a packet communication method and a computer-readable storage medium having a computer program for a communication method
    Publication number: 20030103522
    Abstract: In a system including a parent station and a plurality of child stations connected only to the parent station, which is unable to detect a response among the plurality of child stations, the parent station includes a transmission permission sequential allocation mechanism for giving transmission permission sequentially and a first timer for monitoring a first period which is a response detection time period. The child station includes a transmission permission detection mechanism for detecting that the identifier sent by the parent station is directed to the own station. Each of the child stations transmits data in a band period when the child station is permitted to communicate. When the parent station does not receive a response from the child station permitted to communicate within the first period, the parent station permits a next child station to communicate.
    Type: Application
    Filed: May 16, 2002
    Publication date: June 5, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventor: Toshihisa Hane
  • Secret communication apparatus
    Patent number: 5239581
    Abstract: This secret communication apparatus used in an audio and data transmission system has scramble/descramble circuits formed of programmable logic means. A control circuit in the apparatus instructs the programmable logic means to alter the arrangement of scramble/descramble circuits in accordance with the control signal received from the partner of communication. The control circuit in the partner's apparatus also instructs its programmable logic means to alter the arrangement of scramble/descramble circuits.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: August 24, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Toshihisa Hane