Patents by Inventor Toshiaki Sakane

Toshiaki Sakane 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 data transmission system
    Patent number: 4809298
    Abstract: The present invention relates to a radio transmission system. The system includes a transversal type automatic equalizer which controls tap weight based on bit error rate (BER) from a pseudo error pulse. In the equalizer, the threshold value (BER1) which defines the mode change for tap weighting control from normal to reset is different from the threshold value (BER2) from reset to normal. Therefore, the mode change is carried out by a simple circuit properly and stably.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: February 28, 1989
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Sakane, Sadao Takenaka, Morihiko Minowa, Yoshihito Aono, Yoshimasa Daidoh
  • Decision timing control circuit
    Patent number: 4788696
    Abstract: A circuit is provided for controlling the decision timing of an A/D converter so that error rate becomes small. Error rate information is obtained based on the converted digital signal from the A/D converter. This information is used for controlling the phase of an A/D converter clock signal to thereby control the decision timing of the A/D converter.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: November 29, 1988
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Sakane, Noboru Iizuka, Takanori Iwamatsu