Patents by Inventor Yoshitaka Uchida

Yoshitaka Uchida 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).

  • Patent number: 4943977
    Abstract: A spread spectrum receiver is disclosed in which a correlation pulse generating circuit for generating a correlation pulse from a correlation spike outputted by a correlator comprises an A/D converting circuit which A/D-converts said correlation spike; an absolute value detecting circuit for detecting the absolute value of the output of said A/D converting circuit; a peak value detecting circuit for detecting the value corresponding to a peak of the output of said peak value detecting circuit; a threshold value setting circuit for generating a threshold signal based on the output of said peak value detecting circuit; and a comparing circuit for comparing the output of the absolute value detecting circuit with said threshold signal to generate the correlation pulse.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: July 24, 1990
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Kouichi Kato
  • Patent number: 4939472
    Abstract: An integrating circuit is configured to feed a correlator output to a first integrating and dumping circuit and to a second integrating and dumping circuit and to subsequently add their respective outputs in a composing circuit. The first integrating and dumping circuit and the second integrating and dumping circuit are activated selectively by a switching control switch to perform their integrating and dumping operations.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: July 3, 1990
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Masaharu Mori