Funai Electric Company Ltd.

Yuya Nakamura

Masahiro Suzuki

An image display device includes a microcomputer and LUTs which are tables of correction data used to correct color balance of images. The microcomputer sets LUT extensions and calculates the LUTs based on: (1) the normalized values GainLof the L conforming adjustment values GainL and the normalized values GainHof the H conforming adjustment values GainH; (2) the normalized values Liof the input values Liof the image data of the L adjustment image and the normalized values Hiof the input values Hiof the image data of the H adjustment image; (3) the correction data of the LUTs; and (4) the correction data of the LUT extension units.

Image display device and LUT adjustment method

In a video display apparatus A, a controller, while displaying video processed by a video processoron a video display, displays LUTsR,G, andB which are tables of correction data for correcting luminance levels of red, green, and blue respectively. The controllerre-calculates and rewrites the correction data based on one adjustment point or two or more adjustment points Pand Padjusted by the user.

Video display apparatus using adjustment images

In a video display apparatus A, a controller, while displaying video processed by a video processoron a video display, displays LUTsR,G, andB which are tables of correction data for correcting luminance levels of red, green, and blue respectively. The controllerre-calculates and rewrites the correction data based on one adjustment point or two or more adjustment points P1 and P2 adjusted by the user.

Video display apparatus having a function of adjusting color balance

An image display device such as an LCD television comprises a microcomputer and look-up tables to store correction data for correcting color balance of an image to be displayed. The microcomputer recalculates correction data in the look-up tables and updates the correction data to the recalculated correction data based on: an input value InL and an input value InH of image data of a Low side and a High side white balance adjustment image, respectively; and a gain value GainL and a gain value GainH provided to the input values InL and InH, respectively, to bring color balance of the Low side and High side white balance adjustment image to a predetermined color balance, respectively. This image display device can increase accuracy of white balance adjustment and reduce time required for the white balance adjustment.

Image display device for displaying color image on color display unit

An image display device such as an LCD television comprises a microcomputer and LUTs (look-up tables) which are tables of correction data for correcting color balance of an image to be displayed. The microcomputer recalculates correction data in the LUTs and updates the correction data to the recalculated correction data based on: an input value InL of image data of a Low side white balance adjustment image; an input value InH of image data of a High side white balance adjustment image; and a gain value GainL and a gain value GainH which are provided to the input value InL and the input value InH, respectively, to bring color balance of the Low side white balance adjustment image and the High side white balance adjustment image to a predetermined color balance, respectively.

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Daito, Japan

Yuya Nakamura