Television – Image signal processing circuitry specific to television – Gray scale transformation
Reexamination Certificate
2007-04-17
2007-04-17
Yenke, Brian P. (Department: 2622)
Television
Image signal processing circuitry specific to television
Gray scale transformation
C348S528000, C348S679000, C348S682000, C348S685000
Reexamination Certificate
active
10760602
ABSTRACT:
Disclosed are methods and systems for automatic gain control (AGC) in circuits. The disclosed methods and systems provide accurate and rapidly converging automatic gain control suited for video applications. According to disclosed preferred embodiments of the invention, a signal amplitude controlling method is responsive to gain underflow or overflow. A new fine gain control value is extrapolated and a new coarse gain control value is determined. The new fine gain and new coarse gain control values are applied to the signal to produce an output signal within a pre-selected output amplitude range.
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Brady III W. James
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
Yenke Brian P.
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