Highly adjustable video composite sync separator and variable gain pixel clock frequency locking apparatus and method

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 sou...

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Bibliographic Details
Main Authors KOLODZIEJSKI STANLEY J, SIMENKIEWICZ ANTHONY L, VACHON MICHAEL P, FRANKLIN DENNIS E
Format Patent
LanguageEnglish
Published 14.01.2003
Edition7
Subjects
AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary: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.
Bibliography:Application Number: US20000528953