Patent ID: 6219040
Filing Date: 2001-04-17
Classification: G06F,G09G

Abstract:
A device for protecting a digital display device from damage, comprising:input means for receiving digital display timing control signals; andmeans for monitoring a selected one of the digital display timing control signals and for shutting down power to the digital display device if the selected one of the digital display timing control signals becomes inactive,wherein said means for monitoring further comprises:an output driver for outputting the selected one of the digital timing control signals to the digital display device;an input driver, coupled to said output driver, for feeding back the selected one of the digital timing control signals to the means for monitoring;a counter having a reset input coupled to a said input driver, for counting an independently generated clock signal and outputting a carry signal when a predetermined count is reached; anda digital display device power control sequence circuit, coupled to said counter, for receiving the carry signal and shutting off power to the digital display device in response to the carry signal.