Digital luminance processing circuit

Details Digital luminance processing circuit Digital luminance processing circuit

H - Electricity

04

N

350/94

H04N 5/44 (2006.01) H04N 5/205 (2006.01)

Patent

CA 1219360

RCA 80577/80577A Abstract of the Invention A digital luminance processing circuit includes a first cosine filter in cascade connection with the parallel combination of a second low pass filter and a third filter which attenuates high frequencies less than low frequencies. The third filter includes a variable scaling device. The output of the second filter is connected to one input of a combining means, and the output of the third filter is coupled to a second input of the combining means. The output of the combining means is the output port of the processing circuit.

471788

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