Patent ID: 7567301

Claim:
A flat panel television having gradation value correction mechanism, comprising: a display; an image data generating device for generating image data that is comprised of pixels having gradation values; the image data generating device generates a main image data and one or more sub-image data, with the main image day displayed on the entire display and the one or more sub-image data superimposed on the main image data and displayed as one or more sub-displays of the entire display; a plurality of correction tables that store a correspondence between the gradation values of pixels and corrected gradation values of pixels; a setting table for storing correspondences between one or more divided areas of the display and the plurality of correction tables used for correcting the gradation values of pixels that exist in a selected divided area of the one or more divided areas of the display; a microcomputer for updating the setting table based on a first user selection to select main display modes specifying a combination of the correction tables corresponding to each of the one or more divided areas of the display and a second user selection to select correction tables corresponding to the one or more sub-displays; and an image correction unit for correcting the gradation values of each pixel based on the correction tables corresponding to the area where the pixels exist.