| 摘要 |
The line comb filter for Y(luminance)/C(color)-separating in TV comprises: a 1H line memories 20, 21 for delaying 1H line composite video input signals(C,V); a Band Pass Filters(BPF:22, 23, 24) for passing fixed frequency bandwidth respectively at output signal of 1H memory 20 composite video input signals(C,V) and output signal of a 1H memory 21 ; a 2H comb filter 25 for outputting color signal from the 1H line memory 20, 21; a 2H comb filter 26 for outputting color signal from output signals of the BPFs 22, 23, 24; a compensate signal generator for removing interference component included color signal among output signals of the BPFs 23, 24; a 1st controller for controlling a mixer mixed with output signal of the 2H comb filter 26 and the compensate signal generator; a mixer for providing into a 1st selector by mixing output signals of the 2H comb filter, the 1st controller and the compensate signal generator; a 2nd controller for controlling operation of the 1st selector by mixing output signal of the 2H comb filter and the mixer; a 1st selector for mixing output signal of 2H comb filter and mixer; and an adder for adding output signals of a delay device and the 1st selector.
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