Wireless input system for computer

Details Wireless input system for computer Wireless input system for computer

1992-04-20

1994-03-22

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

2502018, 250221, 345179, G09G 302, G01V 904

Patent

active

052968383

ABSTRACT:
A cylindrical frame is provided with an incident angle detecting section for detecting an incident angle of the light from a source of light capable of transmitting pulses and a focus detecting section having a movable lens constructed so that it detects an incident light from the source of light to control the focus position of the incident light. On the basis of the incident angle detected by the incident angle detecting section, the movable lens is caused to be directed to the source of light. Furthermore, by the focus detecting section, the focus position of light is controlled to detect the position of the movable lens. A distance from the position to the source of light is calculated.

REFERENCES:
patent: 4123765 (1978-10-01), Isono
patent: 4562346 (1985-12-01), Hayashi et al.
patent: 4626077 (1986-12-01), Yamamoto
patent: 4688933 (1987-08-01), Lapeyre
patent: 5045843 (1991-09-01), Hansen
patent: 5166668 (1992-11-01), Aoyagi

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