Patent ID: 6812915
Filing Date: 2004-11-02
Classification: G09G

Abstract:
A liquid crystal display device operating in a selected one of first and second display modes, said first display mode being determined by horizontal and vertical synchronization signals and said second display mode being activated when a data enable signal appears and being controlled by said data enable signal, instead of one of the said horizontal and vertical synchronization signals, said device comprising:a selector circuit which receives selection signals and selects one of said first and second display modes in response to said selection signals; and a detection circuit which detects whether said data enable signal appears within a predetermined period, said detection circuit outputting a first selection signal to the selector circuit when the detection circuit does not detect said data enable signal within said predetermined period, said first selection signal causing the selector circuit to select said first display mode, and said detection circuit outputting a second selection signal to the selector circuit when the detection circuit detects said data enable signal within said predetermined period, said second selection signal causing the selector circuit to select said second display mode.