Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-09-25
1989-03-21
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 22, 358172, 455276, H04N 5262, H04N 518
Patent
active
048148822
ABSTRACT:
A composite video signal from a television tuner which performs a diversity function is input to a demodulator which performs signal processing such as reproduction of a DC component through clamping of the pedestal level and a color demodulation. The composite video signal is also input to a deflection circuit which produces a horizontal sync pulse and a vertical blanking pulse from the received composite video signal. The horizontal sync pulse from the deflection circuit is supplied to a phase shifter/switching circuit which generates a clamp pulse. The clamp pulse is supplied to the demodulator and used for the pedestal clamping operation. The phase shifter/switching circuit also receives the vertical blanking pulse from the deflection circuit to stop the pedestal clamping operation of the demodulator. That is, the generation of the clamp pulse is stopped while the vertical blanking pulse is input to the phase shifter/switching circuit.
REFERENCES:
patent: 4489344 (1984-12-01), Okeda et al.
patent: 4578698 (1986-03-01), Miki et al.
patent: 4578819 (1986-03-01), Shimizu
patent: 4602169 (1986-07-01), Shimizu
patent: 4612577 (1986-09-01), Keen
patent: 4660085 (1987-04-01), Harwood et al.
patent: 4729026 (1988-03-01), Suzuki et al.
IEEE Development of the TV Receiver for Cars-Yashima, Kenishi, et al.-Aug. 1982-vol. CE-28, No. 3, pp. 437-446.
Groody James J.
Kabushiki Kaisha Toshiba
Peng John K.
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