Hand pointing device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 7, 2002
Grant Date -
Nov 22, 2001
app pub date -
Mar 18, 1998
filing date -
Mar 21, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Over an information input space to which an information inputting person comes, a pair of near-infrared light illuminators are arranged in such a manner that the illumination ranges thereof are adjusted so as to illuminate the information inputting person from different directions. A pair of near-infrared-light-sensitive video cameras are also arranged in different positions so as to correspond to the illuminators. The image pickup range of the video cameras is adjusted so that it is out of the range on the floor surface illuminated by the corresponding illuminator, while the information inputting person is within the image pickup range. A controller allows one illuminator at a time to be switched on/off. An image of the information inputting person is picked up by the video camera corresponding to the switched-on illuminator. The information inputting person is extracted based on the images picked up by the video cameras, whereby the position or direction pointed to by the information inputting person is determined.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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