Patent ID: 7764212
Filing Date: 2010-07-27
Classification: G09G,H03M

Abstract:
1. A display driving apparatus comprising: a reference voltage generator for generating a plurality of reference voltages, receiving a difference value between two adjacent reference voltages and using the difference value to generate a plurality of sub reference voltages; a digital-to-analog converter for selecting one of the reference voltages corresponding to a high N-bit data signal among M-bit data signals and outputting the selected reference voltage as a first analog signal, and selecting one of the sub reference voltages corresponding to a low (M-N)-bit data signal among the M-bit data signals and outputting the selected sub reference voltage as a second analog signal, wherein M is a positive integer and N is a positive integer less than M; and an output unit for processing, by addition or subtraction, the first analog signal and the second analog signal for output.