Patent ID: 6034729
Filing Date: 2000-03-07
Classification: G09G,H04N

Abstract:
A monitor protection system for protecting operation of a cathode-ray tube (CRT) type of monitor, comprising:means for receiving horizontal and vertical synchronization signals;a horizontal deflection circuit for generating a horizontal deflection signal to control a horizontal deflection operation of the monitor based upon the horizontal synchronization signal;a vertical deflection circuit for generating a vertical deflection signal to control a vertical deflection operation of the monitor based upon the vertical synchronization signal;a display power management system for controlling power supply to the monitor;a horizontal deflection detecting circuit for detecting the horizontal deflection signal generated from the horizontal deflection circuit;a vertical deflection detecting circuit for detecting the vertical deflection signal generated from the vertical deflection circuit; anda control circuit for determining whether the horizontal deflection signal and the vertical deflection signal are normal, and generating a protection control signal to control operation of the display power management system.