System and method for an adaptive state machine to control...

Details System and method for an adaptive state machine to control... System and method for an adaptive state machine to control...

2007-05-15

2007-05-15

Barrón, Jr., Gilberto (Department: 2132)

Cryptography

Video cryptography

Video electric signal masking

C380S210000, C380S204000, C380S215000

Reexamination Certificate

active

10224995

ABSTRACT:
A method for adaptively filtering a control signal in a serial link includes monitoring for a blanking interval in a video stream having an associated clock signal and monitoring for an occurrence of a VSYNCsignal once the blanking interval has started. A control signal is initially detected wherein the control signal occurs subsequent to the occurrence of the VSYNCsignal. A set of properties of the control signal are recorded and a set of filter parameters are adjusted for detecting the control signal in a next blanking period based on the set of properties of the control signal.

REFERENCES:
patent: 4695900 (1987-09-01), Honjo et al.
patent: 5249228 (1993-09-01), Dieterich
patent: 6335990 (2002-01-01), Chen et al.
patent: 1277285 (1986-04-01), None
patent: 963111 (1999-12-01), None

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