Patent ID: 6092206
Filing Date: 2000-07-18
Classification: G06F,G09G,Y02D

Abstract:
A power supply control mechanism for automatically controlling power supplied to a display device according to operation of a computer, comprising:an oscillating circuit generating a pulse of a given cycle;oscillating circuit operation sensing means for monitoring whether or not the oscillating circuit operates;power supply sensing means connected to said oscillating circuit operation sensing means for selectively outputting an output pulse of the oscillating circuit operation sensing means according to whether the display device is turned on or off;digital/analog converting means connected to said power supply sensing means for converting an output of the power supply sensing means into an analog signal;power switching means for switching according to the analog signal from the digital/analog converting means and producing an output; anda pulsewidth modulation integrated circuit for controlling a pulse duty ratio of the power supplied to the display device according to the output of the power switching means.