Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1994-03-01
1995-07-04
Groody, James J.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348723, H04N 540
Patent
active
054304989
ABSTRACT:
A selective intermodulation correction system which can correct for in-band intermodulation products which are formed in a high end of a video sideband region generated in the common amplification of a television signal. The selective intermodulation correction system operates to generate an intermodulation product which is equal in amplitude but opposite in phase to in-band intermodulation products formed at the high end of the video sideband region. By combining such a signal to a conventionally corrected television signal, the in-band intermodulation products formed in the high end of the video sideband region can be cancelled.
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"Aural/Visual Multiplex Operation of Klystron-Type UHF Television Transmitters" by Ronald W. Zborowski, Mar. 1981.
Kiesel Raymond C.
Ta Hong A.
Comark Communications, Inc.
Groody James J.
Harvey David E.
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