公开(公告)号：EP1591994A1

公开(公告)日：2005-11-02

申请号：EP04708918.0

申请日：2004-02-06

申请人： SANYO ELECTRIC CO., LTD.

发明人： KINOSHITA, Shigeo, C/o Sanyo Electric Co., Ltd. ,  MORI, Yukio, C/o Sanyo Electric Co., Ltd. ,  YAMASHITA, Atsuhiro, C/o Sanyo Electric Co., Ltd. ,  TANASE, Susumu, C/o Sanyo Electric Co., Ltd. ,  INOUE, Masutaka, C/o Sanyo Electric Co., Ltd.

IPC分类号： G09G5/02 ,  H04N1/46 ,  H04N1/40 ,  H04N9/64

CPC分类号： G09G5/02 ,  G09G3/3208 ,  G09G2360/16 ,  H04N9/64 ,  H04N9/67

摘要： A color space correction circuit in a display apparatus comprises: means for holding optimal R, G and B correction values at chromaticity coordinate points corresponding to a white, primary colors and complementary colors, respectively, in a color reproduction region of a display on a chromaticity diagram; means for connecting the respective chromaticity coordinate points corresponding to the primary colors and the complementary colors to the chromaticity coordinate point corresponding to the white in the color reproduction region of the display on the chromaticity diagram, thereby dividing the color reproduction region of the display into a plurality of areas and judging to which area the chromaticity coordinate points corresponding to input signals belong; and means for correcting R, G and B values for the input signals based on optimal R, G and B correction values corresponding to the chromaticity coordinate points that correspond to three vertexes of the area to which the chromaticity coordinate points corresponding to the input signals are judged to belong, and based on the R, G and B values for the input signals.