Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1994-06-07
1995-06-27
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345163, 345167, G09G 508
Patent
active
054283698
ABSTRACT:
The present invention provides for an improved computer pointing device such as a trackball or mouse, for example. The improved computer pointing device allows a user to set a communications protocol for use with a particular computer system by using a user-friendly configuration program designed for operation on a different platform and by using a different communications protocol. Additionally, the computer pointing device includes an LED encoder illumination control system to provide varying levels of LED intensities. During normal operation, an LED operates at a particular intensity level. The intensity level is controllable in discrete steps: LED power is off for power up, LED power is reduced for testing to test for unacceptable signal levels, and LED power may be increased beyond normal levels to counteract diminution of light intensity as the LED ages.
REFERENCES:
patent: 5119077 (1992-06-01), Giorgio
Fraenkel Cristian A.
Pekelney Richard
Pranger Maarten R.
Shafer David C.
Brier Jeffery
Kensington Microware Limited
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