Patents by Inventor Masahisa Yoshimi

Masahisa Yoshimi 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).

  • Signal transmitting apparatus
    Patent number: 6775524
    Abstract: When a transmission-line driver circuit that transmits a signal to a transmission line is supplied with a power-supply voltage from a power-supply circuit, the value of the power-supply voltage is controlled based upon the amplitude of a signal output from the transmission-line driver circuit. For example, the maximum value of a signal input to the transmission-line driver circuit in time units delimited at fixed time periods is detected, the target value of power-supply voltage supplied to the transmission-line driver circuit is decided based upon the maximum value, and the power-supply circuit is controlled in such a manner that the target value of power-supply voltage and actual value of power-supply voltage will agree.
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: August 10, 2004
    Assignee: Fujitsu Limited
    Inventors: Masato Takeyabu, Yasuaki Takeuchi, Yuji Kobayashi, Seiji Miyoshi, Masahisa Yoshimi
  • Signal transmitting apparatus
    Publication number: 20020137482
    Abstract: When a transmission-line driver circuit that transmits a signal to a transmission line is supplied with a power-supply voltage from a power-supply circuit, the value of the power-supply voltage is controlled based upon the amplitude of a signal output from the transmission-line driver circuit. For example, the maximum value of a signal input to the transmission-line driver circuit in time units delimited at fixed time periods is detected, the target value of power-supply voltage supplied to the transmission-line driver circuit is decided based upon the maximum value, and the power-supply circuit is controlled in such a manner that the target value of power-supply voltage and actual value of power-supply voltage will agree.
    Type: Application
    Filed: November 1, 2001
    Publication date: September 26, 2002
    Inventors: Masato Takeyabu, Yasuaki Takeuchi, Yuji Kobayashi, Seiji Miyoshi, Masahisa Yoshimi, Michiyo Yoshimi