Keyboard-mounted cursor position controller

Details Keyboard-mounted cursor position controller Keyboard-mounted cursor position controller

1989-12-11

1992-06-30

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340706, 74471XY, G09G 100

Patent

active

051267233

ABSTRACT:
A keyboard mounted, hand-operable input device for controlling the movement of a marker on a computer display is described and includes a tray which is elongated along a first axis, has right and left closed ends and is mounted for translational movement along its first axis. A hand-operable roller is rotatably mounted in the tray and is movable therewith. A rotary encoder is mounted on and movable with the tray and is maintained in engagement with the roller so that it provides signals indicative of the roller's rotary motion. A translational encoder is movable with the tray and provides signals indicative of translational movements of the tray. By directly coupling the roller to the rotary encoder and having both move with the tray, accurate rotary motion indications are thereby derived.

REFERENCES:
patent: 4313113 (1982-01-01), Thornburg
patent: 4692756 (1987-09-01), Clark
patent: 4712101 (1987-12-01), Culver
patent: 4724715 (1988-02-01), Culver
patent: 4799049 (1989-01-01), Avila
patent: 4823634 (1989-04-01), Culver
IBM Technical Disclosure Bulletin, vol. 21, No. 7, Dec. 1978, pp. 3026-3027.

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