Television – Synchronization – Sync separation
Patent
1995-07-25
1996-02-06
Kostak, Victor R.
Television
Synchronization
Sync separation
348524, H04N 506
Patent
active
054899460
ABSTRACT:
A synchronization (sync) separation system and method quickly and accurately generate a sync signal from an analog video signal by using feedback control. The system comprises a voltage generator for generating first and second reference voltages V.sub.REF1, V.sub.REF2. A first comparator compares the analog video signal to the first reference voltage V.sub.REF1 and generates a shift control signal, A voltage shift mechanism receives the shift control signal and adjusts the analog video signal so that the sync level of the analog video signal converges toward the first reference voltage V.sub.REF1. A second comparator compares the analog video signal with the second reference voltage V.sub.REF2 and generates the sync signal indicative of when the analog video signal exhibits the sync level. Preferably, the voltage shift mechanism introduces a continuous current i.sub.c into the analog video signal. Moreover, the second comparator is an ECL differential line receiver in the preferred embodiment for providing a sync signal which is compatible with ECL.
REFERENCES:
patent: 3699256 (1972-10-01), Roth
patent: 4032974 (1977-06-01), Van Roessell
patent: 4084187 (1978-04-01), Schlotzhauer
patent: 4860099 (1989-08-01), Kuwajima
Foster Bradly J.
Kommrusch Steven J.
Hewlett--Packard Company
Kostak Victor R.
LandOfFree
High speed sync separation system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High speed sync separation system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed sync separation system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2177990