Patents by Inventor Yoichi Eguchi

Yoichi Eguchi 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 receiver with bandwidth switching
    Patent number: 4356567
    Abstract: An automatic IF amplifier band width switching circuit is provided in which band width is switched from broad to narrow in response to either high frequency noise or a predetermined magnitude of interference voltage when the FM detection output is at zero volts. The switching signal may be combined with a hum signal from the tuning knob so that only switching in one direction is possible after tuning is complete.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: October 26, 1982
    Assignee: Pioneer Electronic Corporation
    Inventors: Yoichi Eguchi, Takeshi Yokota