Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-09-28
1991-03-26
Peng, John K.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358167, 358189, H04N 544, H04N 546, H04N 5213
Patent
active
050033956
ABSTRACT:
In a satellite receiver for a sum signal of a television signal and an energy dispersal signal, the sum signal being frequency-modulated on a carrier, the satellite receiver including a frequency demodulator (5) for obtaining a demodulated sum signal, a television signal processing circuit (8) including a decoding circuit (21) and a compensation circuit (17) which is synchronizable with the television signal to obtain the television signal from the sum signal, the compensation circuit (17) includes an active energy dispersal signal generator for obtaining the energy dispersal signal independently of the amplitude of the demodulated sum signal, the active energy dispersal signal generator having a synchronizing signal input (19) for applying a picture-frequency synchronizing signal thereto.
REFERENCES:
patent: 4281348 (1981-07-01), Shizuya
patent: 4605968 (1986-08-01), Hayashi
patent: 4691236 (1987-09-01), Kanno et al.
patent: 4698598 (1987-10-01), Mobley et al.
patent: 4761827 (1988-08-01), Horton et al.
patent: 4821120 (1989-04-01), Tomlinson
Goodman Edward W.
Peng John K.
U.S. Philips Corporation
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