Vertical detail information restoration circuit

Details Vertical detail information restoration circuit Vertical detail information restoration circuit

H - Electricity

04

N

350/57

H04N 9/12 (2006.01) H04N 9/64 (2006.01)

Patent

CA 1249879

Abstract of the Disclosure A composite video signal is comb filtered to generate comb filtered chrominance and luminance signals. A baseband color difference signal is produced from the comb filtered chrominance signal and the presence of high frequency information in the baseband color difference signal is detected to develop a control signal. The bandwidth of the low frequency portion of the comb filtered chrominance signal (i.e. the vertical detail information) which is restored to the comb filtered luminance signal is varied in response to the control signal.

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