DETECTING AMBIENT LIGHT LEVELS IN A VISION SYSTEM

摘要

The detection of ambient light on an optical touch-sensitive device isdisclosed. For example, one disclosed em-bodimentcomprises capturing an image of at least a portion of a display screen with acamera located within the display device,and determined if ambient light in the image is at an acceptable level fordisplay screen operation. Then, a visual representation isdisplayed representing whether the ambient light level is acceptable fordisplay screen operation.