[Automatic contrast limiting circuit and method thereof with...

Details [Automatic contrast limiting circuit and method thereof with... [Automatic contrast limiting circuit and method thereof with...

2004-02-03

2008-01-29

Ometz, David (Department: 2622)

Television

Image signal processing circuitry specific to television

Gray scale transformation

C348S673000, C348S687000, C382S274000, C358S532000

Reexamination Certificate

active

07324165

ABSTRACT:
An automatic contrast limiting circuit and method thereof with spatial domain infinite impulse response filter are disclosed. A spatial domain infinite impulse response filter is adapted to generate an output value of the spatial domain infinite impulse response filter related to an input signal. A peak value detector is adapted to detect the peak output value of the spatial domain infinite impulse response filter during a predetermined recording interval. A contrast evaluator is used to evaluate the required contrast value referring to a predetermined threshold value and the output value of the spatial domain infinite impulse response filter.

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