H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/72
H04N 9/12 (2006.01) H04N 9/78 (2006.01)
Patent
CA 1300257
Abstract of the Disclosure A first delay circuit delays a digital composite color video signal by a one-scanning-line time. A second delay circuit delays the output signal of the first delay circuit by the one-scanning-line time. A first correlation detector detects a correlation between the digital composite color video signal and the output signal of the first delay circuit. A second correlation detector detects a correlation between output signals of the first and second delay circuits. A coefficient gen- erator generates first and second coefficients corre- sponding to magnitudes of the correlation-detect outputs of first and second correlation detectors. A first difference-signal detector detects a difference signal of the digital composite color video signal and the output signal of the first delay circuit. A second difference-signal detector detects a difference signal of the output signals of the first and second delay cir- cuits. A first weighting section weights the difference signal from the first difference-signal detector with the first coefficient provided from the coefficient generator. A second weighting section weights the difference signal from the second difference-signal detector with the second coefficient provided from the coefficient generator. A chrominance signal component outputting section adds together output signals of the first and second weighting sections to separate and output a chrominance signal component contained in the digital composite color video signal.
577257
Hoshino Kiyoshi
Yasuki Seijiro
Hoshino Kiyoshi
Kabushiki Kaisha Toshiba
Marks & Clerk
Yasuki Seijiro
LandOfFree
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