Pointing device with absolute and relative positioning capabilit

Details Pointing device with absolute and relative positioning capabilit Pointing device with absolute and relative positioning capabilit

1997-07-09

2000-06-20

Saras, Steven J.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345161, 345164, G09G 508

Patent

active

060783125

ABSTRACT:
A pointing device of a computer having absolute and relative positioning capability is disclosed. In a mouse pointing device embodiment, the mouse is movable over a mouse pad having a surface having a plurality of uniquely coded positions. The mouse includes a mechanism to detect the position over which it has been moved, and conveys this information to the computer to which it is coupled. Specifically, the surface having a plurality of uniquely coded positions in one embodiment is a two-color gradient in which each color goes from maximum to minimum intensity level over an axis perpendicular to that of the other. The mechanism includes sensors to detect the intensity levels of the colors. In another embodiment, a joystick pointing device having absolute and relative positioning capability is disclosed.

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