Patents by Inventor Peter G. Everett

Peter G. Everett 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).

  • Intermediate frequency saw filter with nyquist phase modulation correction
    Patent number: 4602288
    Abstract: The frequency response of an intermediate frequency filter for an intercarrier sound television receiver is modified to provide a substantially constant gain response portion over a predetermined range of frequencies centered about the 45.75 MHz intermediate frequency picture carrier. Picture carrier phase modulation induced by the Nyquist slope of the conventional intermediate frequency response is thereby eliminated over the predetermined frequency range reducing audio "buzz" by decreasing the phase modulation transferred to the 4.5 MHz intercarrier sound signal by the intermediate frequency picture carrier. In a preferred embodiment, the modified intermediate frequency response is established by a surface acoustic wave filter.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: July 22, 1986
    Assignee: Zenith Electronics Corporation
    Inventor: Peter G. Everett