U.S. Utility Patent 5,570,111 (US5570111A)

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Provided by the ASK Keyboard Patents database

Applied 3rd October 1994

Published 29th October 1996

Expired 3rd October 2014

More informaion

Name	Graphical user interface cursor positioning device having a negative inertia transfer function
Inventors	Robert C. Barrett, Robert S. Olyha, Jr., Joseph D. Rutledge
Assignees	IBM
Description	An invention of a formula and system for providing 'negative inertia' in pointing stick movement, referring to countering the feeling of sluggishness (having inertia) in earlier designs. It is implemented in the TrackPoint III and TrackPoint IV pointing sticks' firmware and applied before any data for cursor movement reaches the host computer.

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