Television – Synchronization – Automatic phase or frequency control
Patent
1997-02-03
1998-07-07
Hsia, Sherrie
Television
Synchronization
Automatic phase or frequency control
348536, 348521, H04N 506
Patent
active
057776865
ABSTRACT:
In a video frame grabber for digitizing analog video signals which have a pure analog video signal component and a synchronization signal component, the synchronization signals are digitized along with the pure analog video signals. Video gain and offset, sync gain, and sync threshold can be adjusted electronically. A variable time delay can be imposed on the sampling clock signals and on horizontal reference signals. Optimal values can be determined for the various parameters.
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Canters Paul
Debeerst Geert
Jennes Jos
Van Goubergen Herman
Wouters Paul
AGFA-GEVAERT N.V.
Hsia Sherrie
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