Patent ID: 8254448

Claim:
A moving picture display apparatus for displaying moving picture data generated by encoding according to a predictive encoding method, the moving picture display apparatus comprising: a liquid crystal panel unit; a light source operable to illuminate the liquid crystal panel unit; a decoding unit operable to decode the moving picture data according to a decoding method corresponding to the predictive encoding method, so as to generate a plurality of YUV pictures, each YUV picture, of the plurality of YUV pictures, being composed of, for each pixel of a display screen, a Y component that is a piece of luma data, a U component that is chrominance data and a V component that is chrominance data; a display control unit operable to convert each YUV picture, of the plurality of YUV pictures, pixel by pixel into a set of primary color data composed of an R component, a G component and a B component, and operable to execute contrast control while causing the liquid crystal panel to display the sets of the primary color data of each YUV picture of the plurality of YUV pictures; a YUV value detection unit operable to, while the decoding unit is generating each YUV picture of the plurality of YUV pictures, detect YUV value information including a maximum value of the luma data in one YUV picture, of the plurality of YUV pictures, currently being generated; and a light source control unit operable to control an amount of light emitted by the light source, the amount of light being controlled based on the YUV value information detected from the one YUV picture that the display control unit is currently causing the liquid crystal panel unit to display, wherein the YUV value information of each respective YUV picture, of the plurality of YUV pictures, further includes a maximum value and a minimum value of the chrominance data of the U component and the chrominance data of the V component of the respective YUV picture, wherein the moving picture display apparatus further comprises an upper bound value calculation unit operable to find, for each respective YUV picture, an upper bound value of all of the sets of the primary color data of the respective YUV picture, based on the detected YUV information of the respective YUV picture, and wherein the light source control unit controls the amount of light based on the upper bound value found with respect to the one YUV picture that the display control unit is causing the liquid crystal panel unit to display.