Patent ID: 6184875
Filing Date: 2001-02-06
Classification: G06F,G09G,Y02D

Abstract:
A display apparatus comprising a CPU, an image display device, a light source for irradiating the image display device, a circuit for turning on/off the light source, a means for determining the resolution of the input image signal, a first switching means for turning on/off the power supply to the circuit components except the light source turning on/off circuit and a second switching means for turning on/off the power supply to the light source turning on/off circuit and adapted to operate in a first power-saving mode for opening the circuits by means of said first switching means after an appropriately selectable first predetermined period of time and also open the circuits by means of said second switching means after an appropriately selectable second predetermined period of time or in a second power-saving mode for opening said first and second switching means by a combination of the polarity of the input horizontal synchronizing signal and that of the input vertical synchronizing signal, said first power-saving mode and said second power-saving mode being able to be selectively used.