Television – Synchronization – Sync separation
Patent
1998-09-04
2000-10-10
Peng, John K.
Television
Synchronization
Sync separation
348530, 348531, H04N 510
Patent
active
06130719&
ABSTRACT:
A method of recovering synchronization signals contained in a composite video signal. The synchronization signals are generally represented by voltage levels less than the blanking level of the video signal, and display data is represented by blanking level. A digital circuit controls a biasing circuit to generate a biasing voltage. A video signal is biased using the biasing voltage and the resulting biased video signal is provided as an input to an operational amplifier. A second input of the operational amplifier is driven by a reference voltage. The digital circuit monitors the output of the operational amplifier and controls the biasing voltage to cause the operational amplifier to clip the display data from the biased video signal and generate a signal representing synchronization signals.
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Hebbalalu Kumar Satyanarayana
Richter Bryan Michael
Peng John K.
TeleCruz Technology, Inc.
Tran Trang U.
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