VIDEO DISPLAY APPARATUS AND METHOD OF PREVENTING INADVERTENT SWITCH-OFF OF LIGHT SOURCE THEREIN
First Claim
1. A video display apparatus comprising:
- a video display device for visually presenting a video image thereon;
a light source turned on by discharge and displaying the video image, which is being presented visually on said video display device, on a screen by irradiation of light; and
a system controller for putting out said light source after a lapse of a predetermined delay time from input of a command to switch off a power source.
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Accused Products
Abstract
A video display apparatus comprising a video display device for visually presenting a video image thereon; a light source turned on by discharge and displaying the video image, which is being presented visually on the video display device, on a screen by irradiation of light; and a system controller for putting out the light source after a lapse of a predetermined delay time from input of a command to switch off a power source. There is also provided a method of preventing inadvertent switch-off of the light source in such a video display apparatus. Even if the power source is switched off inadvertently, the light source is not put out at once and the video image can still be displayed continuously thereon by switching on a power key immediately within the predetermined delay time.
29 Citations
14 Claims
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1. A video display apparatus comprising:
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a video display device for visually presenting a video image thereon;
a light source turned on by discharge and displaying the video image, which is being presented visually on said video display device, on a screen by irradiation of light; and
a system controller for putting out said light source after a lapse of a predetermined delay time from input of a command to switch off a power source. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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- 8. A method of preventing inadvertent switch-off of a light source in a video display apparatus where a video image being visually presented on a video display device is displayed on a screen with irradiation of light from the light source turned on by discharge, said method characterized by enabling a system controller to put out said light source after a lapse of a predetermined delay time from input of a command to switch off a power source.
Specification