Patent №
US 4,886,941
Granted
1989-12-12
Filed 1987
Owner
COMMODORE BUSINESS MACHINES, INC., 1200 WILSON DR., WEST CHESTER, PA 19830 A CORP. OF DE
Lab
—
AI components
1
hardware
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
07051451
A computer system mouse-type input device. Movements of a track-ball motion sensor are converted to quadrature signals and are accumulated in a counting circuit. The contents of the counter are pulse-position modulated with waveforms characteristic of a resistive-capacitive charging circuit and are read periodically by a computer input channel normally used for input of potentiometer-generated commands. The pulse-position modulated signals are converted to digital values used by the computer to position the cursor on a display screen.
AI classification
Ownership
COMMODORE BUSINESS MACHINES, INC., 1200 WILSON DR., WEST CHESTER, PA 19830 A CORP. OF DE
assignment · 47350777
Assignors
DAVIS, HEDLEY, RAIBLE, ROBERT
On an employer assignment, the assignors are typically the inventors.