Patent ID: 8390559

Claim:
A display driving apparatus which outputs n drive signals to n display output terminals in a predetermined cycle according to n pixel data included in display data for a single line, n being an integer equal to or greater than two, and each of the n drive signals driving a panel electrode, said display driving apparatus comprising: a change judgment unit configured to (i) judge whether or not each of the n pixel data has changed from pixel data of an immediately previous cycle, and when judging that each of the n pixel data has changed, further (ii) judge whether each of the n pixel data has changed from a first logical value to a second logical value or from the second logical value to the first logical value; n−1 transition direction match judgment units each provided between an adjacent two of the display output terminals and configured to judge whether or not the pixel data for the two adjacent display output terminals have changed in different directions; a first delay unit configured to generate n first timing signals based on a horizontal synchronization signal that synchronizes with the cycle, the n first timing signals corresponding one-to-one with the n display output terminals and changing with different timings; n−1 second delay units configured to delay n−1 first timing signals among the n first timing signals to generate n−1 second timing signals corresponding one-to-one with the n−1 display output terminals; n−1 delay selection units corresponding one-to-one with the n−1 display output terminals and each configured to (i) select a corresponding one of the second timing signals when the pixel data for a corresponding one of the display output terminals and the pixel data for another one of the display output terminals which is adjacent to the corresponding display output terminal have changed in different directions, and (ii) select a corresponding one of the first timing signals when the pixel data for the corresponding display output terminal and the pixel data for the other display output terminal adjacent to the corresponding display output terminal have changed in a same direction; and a control unit configured to drive the corresponding display output terminal with a timing of change of the first timing signal or the second timing signal selected by each of said n−1 delay selection units.