Patent ID: 8228354
Filing Date: 2012-07-24
Classification: G09G

Abstract:
1. A display control device which uses frame rate control and converts m-bit input data, m being an integer, representing brightness of each pixel, to n-bit output data, n being an integer less than m, to control brightness of each pixel, the device comprising: a first frame rate controller which uses frame rate control, generates a plurality of first tone data according to the input data, and outputs the generated data in a time division manner at each predetermined first timing; and a second frame rate controller which uses frame rate control, generates a plurality of second tone data according to the input data, and outputs the generated data in a time division manner at each predetermined first timing; wherein rate of change of brightness represented by the first tone data with respect to the input data and rate of change of brightness represented by the second tone data with respect to the input data are made different, and any of the first and the second tone data from the first and the second frame rate controllers is selected, to control brightness of each pixel, wherein the second frame rate controller comprises: a fixed data generator which generates 2 a second frame rate control circuit which generates 2 a selector which receives third tone data from the second frame rate control circuit and fixed data from the fixed data generator, switches the received data in a time division manner, to be outputted as the second tone data, and wherein the second frame rate controller divides a plurality of pixels arrayed in a matrix form into a plurality of regions, and sets a phase for switching the third tone data and the fixed data for each region.