Synchronizing arrangement including a gate circuit and a window

Details Synchronizing arrangement including a gate circuit and a window Synchronizing arrangement including a gate circuit and a window

1995-06-07

1997-03-04

Peng, John K.

Television

Synchronization

Sync separation

327141, H04N 510

Patent

active

056084625

ABSTRACT:
A synchronizing arrangement includes a window circuit (WINC1,WINC2) for generating a periodic window signal (LW,RW), and a gate circuit (GC) for supplying a periodic gating pulse (Hp). The gating pulse (Hp) is related to a presented synchronizing pulse (Hs) if the presented synchronizing pulse (Hs) occurs during the window signal (LW,RW). The gate circuit (GC) generates the gating pulse (Hp) related to a leading edge of the window signal (LW) if the presented synchronizing pulse (Hs) occurs before the start of the window signal (LW,RW), and the gate circuit (GC) generates the gating pulse (Hp) related to a trailing edge of the window signal (RW) if the presented synchronizing pulse (Hs) occurs after the end of the window signal (LW,RW).

REFERENCES:
patent: 4843469 (1989-06-01), Boyce
patent: 4974081 (1990-01-01), Yokogawa
patent: 5034815 (1991-07-01), Shibayama
patent: 5272532 (1993-12-01), Alba
patent: 5418573 (1995-05-01), Basile et al.

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