H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/72
H04N 9/12 (2006.01) H04N 9/78 (2006.01)
Patent
CA 2027520
A filter for separating a color signal and a luminance signal from a composite color television signal in which the frequency of said color signal is multiplexed in a high-frequency region of the luminance signal. In response to the movement of a picture, an appropriate filter is selected from a filter utilizing interframe correlation, a filter utilizing interfield correlation and a filter utiliz- ing the infield correlation. A plurality of filters utilizing filed correlation are prepared and a color signal and a luminance signal are separated by the processing of a principal pixel, which is an object of processing, and pixels different from each other. A filter is selected in accordance with the correlation state between the principal pixel and the pixels therearound.
Ishizuka Mitsuru
Yamaguchi Noriyuki
Gowling Lafleur Henderson Llp
Mitsubishi Denki Kabushiki Kaisha
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