Receiver and demodulation circuit suitable for said receiver

Details Receiver and demodulation circuit suitable for said receiver Receiver and demodulation circuit suitable for said receiver

1989-03-21

1990-07-03

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 23, 358166, 358140, H04N 544, H04N 701, H04N 965, H04N 366

Patent

active

049395777

ABSTRACT:
In a receiver for television signals which are frequency-modulated on a carrier, having a demodulation circuit provided with a frequency demodulator (19), a detector (29, 35) with a level detector (29) for detecting a disturbed television signal and a correction circuit (5, 9, 11; 53, 59, 49; 39) for correcting the disturbed television signal, the correction circuit has a control signal input (33, 37) which is coupled to an output (31) of the detector (29, 35), an input (27) of the level detector (29) for detecting interference pulses in a demodulated television signal being coupled to an output (21) of the frequency demodulator (19), and the correction circuit (5, 9, 11; 53, 59, 49; 39) including a delay circuit (53, 59, 49).

REFERENCES:
patent: 4322746 (1982-03-01), Oguino
patent: 4327432 (1982-04-01), Lang et al.
patent: 4527187 (1985-07-01), Ohta
patent: 4531148 (1985-07-01), Ohta
patent: 4713689 (1987-12-01), Veillard
patent: 4825289 (1989-04-01), Ohta
patent: 4831435 (1989-05-01), Song et al.

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