| http://www.w3.org/ns/prov#value | - When a pointing device such as a finger or a pen is inserted into the entry area 2, although detailed description will be made later, the light emitted from the lighting device 4 is irregularly reflected by the pointing device, and a portion of the irregularly reflected light is detected by each CCD 5 in the image pickup devices 7L and 7R respectively.
|
