Device for synchronizing a power drive signal of a monitor and a method therefor

摘要

A device for synchronizing a power drive signal of a monitor, and a method therefor. The device comprises a central processing unit to receive a horizontal synchronization signal outputted from a video card and to judge whether a frequency of the horizontal synchronization signal is larger than a frequency preset in a memory; a frequency-division circuit to receive the horizontal synchronization signal from the video card and divide the frequency of the horizontal synchronization signal; and a frequency division signal selection circuit to output the frequency-divided horizontal synchronization signal, outputted from the frequency division circuit, to a high voltage drive circuit if the central processing unit judges that the frequency of the horizontal synchronization signal is larger than the preset frequency and to output the horizontal synchronization signal with the frequency thereof unchanged to the high voltage drive circuit if the central processing unit judges that the frequency of the horizontal synchronization signal is not larger than the frequency preset in the memory.