Patent ID: 7580081
Filing Date: 2009-08-25
Classification: G09G

Abstract:
1. An image display apparatus comprising: an input range discriminator which discriminates a type of an input digital video signal, on the basis of a setup level and a dynamic range of the digital video signal; a signal processor which corrects the setup level and the dynamic range of the digital video signal, on the basis of a result of the discrimination made by the input range discriminator; and a display device which displays a picture based on the video signal corrected by the signal processor; wherein the signal processor comprises: a video signal processing controller which controls an amount of setup cancel and a correction coefficient of a dynamic range, on the basis of the result of the discrimination made by the input range discriminator; and a microprocessor which performs a computation for correcting the setup cancel and the dynamic range, on the basis of the amount of the setup cancel and the correction coefficient of the dynamic range, which are output from the video signal processing controller.