Patents by Inventor Yoshitoshi Shoji

Yoshitoshi Shoji 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).

  • Method of managing communication network, and communication device
    Patent number: 7162260
    Abstract: The invention provides a method of managing a network in which the configuration of communication devices can be freely modified and each terminal can operate as a hub terminal for controlling the network, and a communication device. Following network management information transmitted by the hub terminal periodically, each leaf terminal transmits terminal synchronization information and then transmits data. The network management information includes network ID retained by the hub terminal, station ID information in the form of information indicating the use/non-use of station ID in the network, and a terminal synchronization information transmission request which designates the leaf terminal which should transmit a terminal synchronizing signal. The leaf terminals designated by the terminal synchronization information transmission request transmit the individual terminal synchronization information sequentially following the network management information.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: January 9, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshitoshi Shoji, Hideo Nanba
  • Radio bus system, radio communication apparatus and registration communication method
    Patent number: 7158786
    Abstract: A radio bus system, a radio communication apparatus and a registration communication method which can ensure a minimum level of secrecy even when radio is used during an authentication information registration procedure. A hub station and each terminal comprises a mode switching control circuit (10) for switching between two modes, one being a registration mode to be used for the transmission and reception of registration data, and the other being a normal mode to be used for the transmission and reception of general data other than the registration data, a scrambler (transmitter means) (22) for transmitting data after providing the data with predetermined data processing corresponding to the mode switched to, and a descrambler (receiver means) (27) for performing on received data a predetermined restoration process corresponding to the mode switched to. Restoration of the received data is enabled only when the mode on the transmitting end and that on the receiving end correspond with each other.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: January 2, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshitoshi Shoji, Koji Yamano
  • Communication control method and communication device
    Publication number: 20030235161
    Abstract: The present invention, in the case where one terminal station attempts to transmit an asynchronous packet to other terminal station, has an object to provide a communication control method that enables the source terminal station to perform communications, even when the destination terminal station is in a sleep mode, without the necessity of any special processing.
    Type: Application
    Filed: April 28, 2003
    Publication date: December 25, 2003
    Inventors: Yoshitoshi Shoji, Hideo Nanba
  • Radio bus system, radio communication apparatus and registration communication method
    Publication number: 20030162542
    Abstract: A radio bus system, a radio communication apparatus and a registration communication method which can ensure a minimum level of secrecy even when radio is used during an authentication information registration procedure. A hub station and each terminal comprises a mode switching control circuit (10) for switching between two modes, one being a registration mode to be used for the transmission and reception of registration data, and the other being a normal mode to be used for the transmission and reception of general data other than the registration data, a scrambler (transmitter means) (22) for transmitting data after providing the data with predetermined data processing corresponding to the mode switched to, and a descrambler (receiver means) (27) for performing on received data a predetermined restoration process corresponding to the mode switched to. Restoration of the received data is enabled only when the mode on the transmitting end and that on the receiving end correspond with each other.
    Type: Application
    Filed: February 27, 2003
    Publication date: August 28, 2003
    Inventors: Yoshitoshi Shoji, Koji Yamano
  • Method for managing communication network, and communication device
    Publication number: 20030109255
    Abstract: The invention provides a method of managing a network in which the configuration of communication devices can be freely modified and each terminal can operate as a hub terminal for controlling the network, and a communication device. Following network management information transmitted by the hub terminal periodically, each leaf terminal transmits terminal synchronization information and then transmits data. The network management information includes network ID retained by the hub terminal, station ID information in the form of information indicating the use/non-use of station ID in the network, and a terminal synchronization information transmission request which designates the leaf terminal which should transmit a terminal synchronizing signal. The leaf terminals designated by the terminal synchronization information transmission request transmit the individual terminal synchronization information sequentially following the network management information.
    Type: Application
    Filed: December 27, 2002
    Publication date: June 12, 2003
    Inventors: Yoshitoshi Shoji, Hideo Nanba