Highly adjustable video composite sync separator and variable gain pixel clock frequency locking apparatus and method
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United States of America Patent
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Jan 14, 2003
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app pub date -
Mar 20, 2000
filing date -
Mar 20, 2000
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Abstract
An apparatus and method for extracting vertical (V-SYNC) and horizontal (H-Blank) sync signals from a digital composite sync signal (C-SYNC) of a master video source for use in controlling a second video source, which allows for an adjustable delay relationship between the C-SYNC from the master source and the generated H-Blank. The present invention also provides a system and method for varying the responsiveness or gain of the genlocking circuit used to synchronize the system pixel clock frequency of the second video source to that of the master video signal.
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