Auto mode detection circuit in liquid crystal display

摘要

An auto mode detection circuit in LCDS which detects a vertical synchronous signal provided to a liquid crystal display module (LCM) and selects the operation mode of LCDs with the detection result, comprising: clock signal generation for receiving a main clock signal to generate a clock signal; vertical synchronous signal detection means for detecting the vertical synchronous signal to generate a detection signal whenever a desired number of the clock signals are provided from the clock signal generation means; selection signal generation means for receiving the detection signal from the vertical synchronous signal detection means to generate a mode selection signal; and mode selection means for receiving the mode selection signal from the selection signal generation means to select one of a first signal for the first mode and a second signal for the second mode.