Picture stabilizing circuit in color television receiver

Details Picture stabilizing circuit in color television receiver Picture stabilizing circuit in color television receiver

1981-09-03

1984-01-10

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 9535

Patent

active

044255764

ABSTRACT:
A picture stabilizing circuit in a color television receiver decodes a count value in a counter comprising a vertical synchronizing circuit of a pulse count system for generating an ineffective-rendering pulse covering a period including a vertical synchronizing period and an equalizing pulse period. The circuit is responsive to the ineffective-rendering pulse to render ineffective or mask for the pulse period a composite synchronizing signal being applied to a picture associated circuit, such as a horizontal automatic frequency circuit, a horizontal automatic phase control circuit, a synchronization detecting circuit or the like while a burst gate-pulse-generating circuit and a direct current restoring circuit are rendered ineffective during the period of the ineffective-rendering pulse. The circuit comprises a flip-flop for generating an ineffective-rendering pulse which is set responsive to one decoder coupled to the counter and is reset responsive to the other decoder coupled to the counter. The output of the flip-flop is utilized as an ineffective-rendering pulse.

REFERENCES:
patent: 4164750 (1979-08-01), Hosoya
patent: 4189740 (1980-02-01), Isono
patent: 4305089 (1981-12-01), Hosoya
A Newly Developed Correction System of Transmission Distortion with Vertical Interval Reference Signal, Itsuro Nishimura, IEEE Transaction on Consumer Electronics, vol. CE-25, Feb. 1979.

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