Television – Image signal processing circuitry specific to television – Dc insertion
Patent
1996-08-20
1998-06-02
Hsia, Sherrie
Television
Image signal processing circuitry specific to television
Dc insertion
348695, H04N 518
Patent
active
057608440
ABSTRACT:
A signal voltage level dual clamping circuit is disclosed for use in a receiving circuit for extraction of timing information from a signal. A first, start-up voltage level clamp is provided, the operation of which is independent of the signal timing information. A second, gated voltage level clamp is provided, the operation of which is dependent on the signal timing information. A switching circuit operates to switch the first clamp out of operation and switch the second clamp into operation once sufficient timing information has been extracted from the signal to permit operation of the second clamp.
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EEG Enterprises, Inc.
Hsia Sherrie
Novack Martin M.
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