Display apparatus
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United States of America Patent
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-
Feb 6, 2001
Grant Date -
N/A
app pub date -
Nov 12, 1998
filing date -
Nov 14, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A display apparatus includes 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. In a first power-saving mode, the circuits may be opened by means of the first switching means after an appropriately selectable first predetermined period of time and may be opened by means of the second switching means after an appropriately selectable second predetermined period of time. A second power-saving mode is also provided for opening the 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. The first power-saving mode and the second power-saving mode may be used selectively.
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