| 摘要 |
<p>PURPOSE:To provide a power consumption reducing circuit which can reduce the power consumption of a display without adding any special hardware. CONSTITUTION:A video signal monitor circuit 2 of a display 1 monitors the video signals received from a computer 8 and transmits a black image detecting signal to a timer circuit 4 if the video signals show an image of an entire black surface. Receiving the black image detecting signal from the circuit 2, the circuit 4 counts the clock pulses sent from an oscillator 3 and then transmits a power cut-off signal to a switch 6 when its count value is equal to the prescribed value. Then the switch 6 cuts the supply of power to a display device 7 in response to the power cut-off signal received from the circuit 4.</p> |
