Patent ID: 8648783

Claim:
A driving apparatus for a liquid crystal display, comprising: a liquid crystal display panel; an image signal processor that extracts a complex synchronizing signal and a first image signal from a complex image signal; an image signal generator that generates a second image signal using a horizontal synchronizing signal and a dot clock; an input signal detector that counts pulses in the complex synchronizing signal to decide whether the first image signal from the image signal processor is provided to a data driver or not, and generate a selection signal according to the result of the counting; an image signal selector that selectively outputs one of the first image signal from the image signal processor and the second image signal from the image signal generator in response to the selection signal; wherein the data driver applies the selected output image signal to the liquid crystal display panel; and a gate driver that drives a plurality of gate lines in the liquid crystal display panel; wherein the complex synchronizing signal is used for generating a gate control signal to control the gate driver and a data control signal to control the data driver.