Patent ID: 6384803
Filing Date: 2002-05-07
Classification: G09G

Abstract:
A display apparatus for creating, for each image, a number of subfields Z from a first subfield to a Zth subfield in accordance with a Z bit representation of each pixel, a weight of each subfield, and a number of gradation display points, the display apparatus comprising:an average level detector that detects an average image brightness level; a peak level detector that detects a peak image brightness level; an image characteristic determining device that determines a subfield number Z and a weighing multiple, while maintaining a same number of gradation display points, based on the average image brightness level and the peak image brightness level; and a weight setting device that multiples the weight of each subfield by the weighing multiple; wherein the image characteristic determining device decreases the subfield number Z and increases the weighing multiple as the average image brightness level decreases and the peak image brightness level increases.