Input device featuring both trackball and mouse capability

Details Input device featuring both trackball and mouse capability Input device featuring both trackball and mouse capability

1983-09-23

1985-12-31

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

74471XY, 33 1M, 340710, 250231SE, G01V 904

Patent

active

045623473

ABSTRACT:
An input apparatus for use with a computer, including a housing having a top aperture and a bottom aperture, a spherical member supported in the housing so that a portion thereof protrudes through the top and bottom apertures, and encoding means for transforming the motion of the ball into computer compatible signals, wherein the input apparatus can be moved over a surface, so as to function as a mouse, or can be supported by its housing, with motive force applied to the portion of the spherical member protruding from the top aperture, so as to function as a trackball.

REFERENCES:
patent: 3541541 (1970-11-01), Engelbart
patent: 3892963 (1975-07-01), Hawley et al.
patent: 3987685 (1976-10-01), Opocensky

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