Television – Synchronization – Sync generation
Reexamination Certificate
2007-05-15
2007-05-15
Ometz, David (Department: 2622)
Television
Synchronization
Sync generation
C348S516000, C348S153000, C348S143000, C348S705000, C348S014110
Reexamination Certificate
active
11285000
ABSTRACT:
A synchronization signal generating apparatus and method in which an input circuit is inductively coupled to an alternating current signal line. The input circuit generates a rectified signal. A switch has a switch input and a switch output in which the switch input is electrically connected to the input circuit and is enabled when the voltage of the rectified signal is greater than a predetermined voltage and is disabled when the rectified signal voltage is less than the predetermined voltage. A pulse generating circuit has a pulse generating circuit input and a pulse generating circuit output. The pulse generating circuit input is electrically connected to the switch output. The pulse generating circuit generates a pulse each time the switch is enabled. The synchronization signal generating apparatus is used in a synchronized television display system to signal a video switch to switch the video signal generated by a camera to a monitor based on the occurrence of the synchronization signal.
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Desir Jean W.
Kashimba, Esq. Paul T.
Ometz David
Pelco
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