Large scale, single chip integrated circuit television receiver

Details Large scale, single chip integrated circuit television receiver Large scale, single chip integrated circuit television receiver

1980-12-29

1983-05-10

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358148, 455333, H04N 544

Patent

active

043832733

ABSTRACT:
A single chip integrated circuit that performs the electronic functions of a monochrome television receiver with the exception of the RF tuner, sound channel, and power output stages. The circuit includes video IF/detector and video processing as well as a two loop horizontal phase locked loop for locking the horizontal flyback to the horizontal sync pulses. In addition, a vertical processing stage is related to the horizontal sync pulses, is included for producing vertical flyback. The circuit operates in a vertical narrow window mode when coincidence occurs between the vertical sync pulses and the output of a vertical countdown circuit to thereby reduce interference from noise and operates in a wide window mode when vertical sync pulses are lost or not yet acquired to allow fast acquisition of the vertical sync pulses.

REFERENCES:
patent: 4162451 (1979-07-01), Ash
patent: 4237487 (1980-12-01), Ikeda et al.

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