Patents by Inventor Ryoichi Kaneda

Ryoichi Kaneda 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).

  • Method and circuitry for controlling the intermediate frequency of an FM receiver to lessen phase distortion
    Patent number: 4373209
    Abstract: Circuitry for controlling the intermediate frequency of an FM receiver comprising modulating means for frequency modulating the intermediate frequency signal with a modulating signal of predetermined frequency; detecting means for detecting the absolute amount of distortion incurred by the modulating signal of predetermined frequency at the intermediate frequency amplification stage of the FM receiver; and control means for changing the intermediate frequency by incremental amounts to control the intermediate frequency so that the distortion at the intermediate frequency amplification stage is minimized in accordance with the increase or decrease in the distortion detected by the detecting means.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: February 8, 1983
    Assignee: Trio Kabushiki Kaisha
    Inventor: Ryoichi Kaneda