Computer graphics processing and selective visual display system – Display peripheral interface input device – Stylus
Patent
1992-04-17
1994-06-07
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
Stylus
273438, G09G 500
Patent
active
053193873
ABSTRACT:
An apparatus for specifying three-dimensional coordinates of a body includes an image position sensing unit for converging a light radiating from a specific body arranged in a space on a plane to form an image and detecting a position of the image on the plane, one or a plurality of mirrors for reflecting the light from the specific body to allow the reflected light to enter the image position sensing unit, and a coordinate calculating unit for calculating coordinates of the specific body in a three-dimensional coordinate system defined in a three-dimensional space based on the positions of the images respectively formed by a light radiating from the specific body and directly entering the image position sensing unit and a light reflected by the mirror and entering the image position sensing unit.
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(Nikkei Industrial Newspaper Jan. 24, 1991) Small-size Wireless Mouse Using Infrared Ray Developed by Digital Stream.
Brier Jeffery
Sharp Kabushiki Kaisha
Tung Bryan S.
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