Patent ID: 7561134

Claim:
A thin film transistor liquid crystal display (TFT-LCD) driving system, comprising: an LCD module detecting circuit configured to detect a first TFT-LCD module or a second TFT-LCD module and generate an identification signal corresponding to an interface technique of the detected first or second TFT-LCD module, wherein the LCD module detecting circuit has an LCD detect pin coupled to at least one pin of the first or second TFT-LCD module for detecting the first or second TFT-LCD module by determining a voltage assigned to the LCD detect pin, wherein the first and second TFT-LCD modules have different interface techniques; a video controller configured to receive the identification signal and recognize the interface technique of the detected first or second TFT-LCD module according to the received identification signal and drive the detected first or second TFT-LCD module according to the recognized interface technique; and an LCD module driving voltage supply unit configured to supply a first driving voltage or a second driving voltage to the detected first or second TFT-LCD module, based on the recognized interface technique.