Title:
【発明の名称】動き適応型輝度信号色信号分離フィルタ
Document Type and Number:
Japanese Patent JP2786304
Kind Code:
B2
Abstract:
PURPOSE:To decrease the deterioration in the resolution of even a moving picture by detecting correlation between frames locally, applying inter-field calculation and applying YC separation in a frame including an in-field band limit of a color signal. CONSTITUTION:An in-frame YC separation circuit 50 is provided, which detects correlation between frames locally when a moving detection circuit 80 detects a moving picture, selects adaptively the interfield calculation and plural in-frame processings including in-field band limit of a color signal, and outputs an in- frame YC separate Y signal and an in-frame YC separate C signal. That is, the in-frame YC separation circuit 50 detects correlation between frames when the movement detection circuit 80 discriminates a moving picture and selects any of 3 kinds of the in-frame YC separation circuits 50 depending on the quantity of the correlation to output the in-frame YC separate Y signal and the in-frame YC separate C signal. Thus, a picture with high resolution and less picture quality deterioration is reproduced even from the picture requiring lots of processing changeover.
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Inventors:
YAMAGUCHI NORYUKI
KURASHITA TAKUJI
ISHIZUKA MITSURU
TANIGUCHI JUNKO
YAO SEIJI
KURASHITA TAKUJI
ISHIZUKA MITSURU
TANIGUCHI JUNKO
YAO SEIJI
Application Number:
JP8612690A
Publication Date:
August 13, 1998
Filing Date:
March 29, 1990
Export Citation:
Assignee:
MITSUBISHI DENKI KK
International Classes:
H04N9/78; H03H17/02; H03H21/00; H04N9/12; (IPC1-7): H04N9/78
Attorney, Agent or Firm:
Maeda Minoru