Wireless input system for computer using pen position detection

Details Wireless input system for computer using pen position detection Wireless input system for computer using pen position detection

1992-02-06

1993-07-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 1, 340707, G01V 904

Patent

active

052276228

ABSTRACT:
A wireless input device for computer comprises a pen-type input device having a source of light capable of transmitting pulses. The wireless input device further comprises an input device body including two angle detecting section, each having a light receiving element constructed so that it is rotated to the direction of the incident angle of incident light when the incident light from the source of light is detected, and a calculating section for calculating the position of the pen-type input device from the two incident angles detected by the two angle detecting sections.

REFERENCES:
patent: 3559307 (1971-02-01), Barrekette et al.
patent: 3801741 (1974-04-01), Ablett
patent: 4550250 (1985-10-01), Mueller
patent: 4688933 (1987-08-01), Lapeyre
patent: 4705942 (1987-11-01), Budrikis et al.
patent: 5026153 (1991-06-01), Suzuki et al.

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