Recovering horizontal synchronization

Details Recovering horizontal synchronization Recovering horizontal synchronization

1997-06-04

1999-09-14

Harvey, David E.

Television

Synchronization

Automatic phase or frequency control

348540, 331 17, H04N 505

Patent

active

059530715

ABSTRACT:
A method of, a device for, and a storage medium for recovering horizontal synchronization from a TV-signal with the use of a PLL. The number of periods during which a predetermined degree of synchronization persists is counted and the result of the counting decreases the bandwidth of the PLL when the number of periods increases.

REFERENCES:
patent: 3846584 (1974-11-01), Itoh et al.
patent: 3909735 (1975-09-01), Anderson et al.
patent: 4535358 (1985-08-01), Duijkers
patent: 4928075 (1990-05-01), Leis
patent: 5534823 (1996-07-01), Kondou
"Die Horizontal-Vertikal-Kombination TDA 2579", Phillips Semiconductor Division in Valvo TI 841221, pp. 3-7.
"Synchronization Issues for Consumer TV", by Kees van Zon, Proceedings 1995, International Symposium on Synchronization, Dec. 14-15, 1995, pp. 165-170.

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