| 摘要 |
PROBLEM TO BE SOLVED: To reduce a noise from a video signal. SOLUTION: The signal processing unit has a motion vector detection circuit 7 that divides a received video signal into 1st blocks to detect a motion vector, a 1st sbutractor 10 that applies motion compensation to the received video signal on the basis of the motion vector to obtain a difference signal between the received video signal and the received video signal of one preceding video unit, an orthogonal transform section 11 that divides the difference signal into 2nd blocks to convert them into signals each having a frequency band, an attenuator 12 that applies nonlinear processing by each frequency band to the signals from the orthogonal transform section 11, and a 2nd sbutractor 14 that synthesizes the signal from the attenuator 12 with the received video image. The border of the 1st blocks has a correlation with the border of the 2nd blocks.
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