Pointing device utilizing a photodetector array and controlled b

Details Pointing device utilizing a photodetector array and controlled b Pointing device utilizing a photodetector array and controlled b

1995-06-07

1996-11-26

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

345157, 345176, G09G 100, G09G 300, G09G 508

Patent

active

055788173

ABSTRACT:
A cursor control device for personal computers and workstations includes various embodiments, some of which include a patterned ball and some of which rely on other patterned surfaces, which recognizes changes in the position of the pattern relative to a sensor having an array of photosensitive elements. Circuitry associated with the sensor determines movement of the pattern across the array, and translates that movement into conventional cursor control signals supplied to a host system.

REFERENCES:
patent: 4812833 (1989-03-01), Shimauchi
patent: 4868551 (1989-09-01), Arditty et al.
patent: 4927987 (1990-05-01), Kirchgessner
patent: 5355148 (1994-10-01), Anderson

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