Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1992-09-30
1994-02-15
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345167, G09G 508
Patent
active
052870901
ABSTRACT:
A combined mouse and track ball are contained within an ergonomically designed housing or shell. The shell is curved to fit comfortably within the palm of the hand of an operator so that the forefinger and thumb are opposed to each other in a prehensile position. A single shell is operable by a left-handed or right-handed operator by rotation of a switch to change the alignment of the sensor pickups engaging the roller ball of the combined mouse and track ball. At least one switch plate extends across an upper surface of the shell for depression by a forefinger of the operator. The switch plate is pivoted about a central fulcrum so as to have a cursor shifted to a position above an icon located on a computer screen for depression of the switch plate and initiation of the computer function indicated.
REFERENCES:
patent: Re32633 (1988-03-01), Hovey et al.
patent: 3987685 (1976-10-01), Opocensky
patent: 4562347 (1985-12-01), Hovey et al.
patent: 4818978 (1989-04-01), Kurihara et al.
patent: 4862165 (1989-08-01), Gart
patent: 5175534 (1992-12-01), Thatcher
Chang V.
Oberley Alvin E.
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