Patent ID: 8355081

Claim:
A display control device, comprising: a first measuring circuit, for receiving at least one of a plurality of first timing signals of an input image signal of an input terminal and for detecting at least one frequency of the plurality of first timing signals to output an input timing signal; a second measuring circuit, for receiving at least one of the plurality of first timing signals and at least one of a plurality of second timing signals of an output image signal and for detecting the phase difference between at least one of the first timing signals and at least one of the second timing signals to output a phase difference signal; a determining circuit coupling to the first and the second measuring circuits, for outputting a timing control signal and a clock control signal according to the input timing signal and the phase difference signal; a clock generator coupling to the determining circuit, for outputting an output clock signal according to the clock control signal; and a timing controller coupling to the determining circuit, for outputting the plurality of second timing signals according to the timing control signal, wherein, based on the phase difference signal, the determining circuit determines and performs adjustment and compensation of phase corrections of the first timing signals of the input terminal and the second timing signals of the output terminal, the clock generator generates an adjusted output clock signal, and the timing controller generates the plurality of second timing signals of an output image signal based on the adjusted output clock signal.