Patents by Inventor Takao Hirakoso

Takao Hirakoso 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 transmission circuit and signal transmission device utilizing the same
    Patent number: 5717345
    Abstract: A signal transmission circuit employing a signal transmitting circuit and a signal receiving circuit. The signal transmitting circuit transfers received signals from an input terminal, through transmission lines, to the signal receiving circuit. The signal transmitting circuit incorporates thereinto a control circuit which operates with the first power source having the first voltage and provides an inverted/non-inverted output in accordance with the first power source, and a pair of the first and the second push-pull type drivers which feed the inverted/non-inverted output from the control circuit. The first and the second push-pull type drivers operate with the second power source having the second voltage lower than the first voltage and transmit complementary transmitting signals having values corresponding to the second voltage corresponding to the input signal driven by the control circuit through the transmission lines.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: February 10, 1998
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Koichi Yokomizo, Kuniharu Hirose, Kazuo Ikeda, Takao Hirakoso