Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-02-25
1993-03-30
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358197, 358143, H04N 560, H04N 562
Patent
active
051989042
ABSTRACT:
A system and method reduce unwanted aural carrier modulation caused by the visual signal in a common amplification television transmitter which amplifies both an aural signal and the visual signal simultaneously. A non-linear amplitude domain video signal and a non-linear phase domain video signal respectively amplitude and phase modulate the aural signal to generate a modified aural signal. A non-linear amplifier is used to generate the non-linear amplitude domain video signal and the non-linear phase domain video signal which respectively having amplitude and phase components that are directly opposite to unwanted amplitude and phase components added to the aural signal by the visual signal.
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Kiesel Raymond C.
Ta Hong A.
Burgess Glenton B.
Comark Communications, Inc.
Groody James J.
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