Video signal detection circuit and video signal processing devic

Details Video signal detection circuit and video signal processing devic Video signal detection circuit and video signal processing devic

1996-06-05

1999-01-26

Faile, Andrew I.

Television

Receiver circuitry

Intercarrier circuits

348607, 348736, H04N 562

Patent

active

058643737

ABSTRACT:
A video signal detection circuit of the present invention is provided with a trapping circuit which traps frequencies corresponding to color sub-carrier wave signal components and which is disposed between a phase comparing circuit and a voltage controlled oscillation circuit in a PLL circuit performing synchronous detection.

REFERENCES:
patent: 3204025 (1965-08-01), Przybyszewski
patent: 4811096 (1989-03-01), Gakumura
patent: 4933767 (1990-06-01), Hyakutake
patent: 5644368 (1997-07-01), Natsume

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