Computer graphics processing and selective visual display system – Display peripheral interface input device – Mechanical control
Reexamination Certificate
2006-12-05
2006-12-05
Kincaid, Lester G. (Department: 2617)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Mechanical control
C455S090300, C455S550100
Reexamination Certificate
active
07145557
ABSTRACT:
The present invention is a roller construction with direction finding for a mobile navigation device. The present invention comprises a hollow conductive ring with several slots at an end, wherein a contacting area is set on the inner surface of the protruding part between each two neighboring slots; a support to plug the conductive ring; and a plurality of terminals plugged in from both two end surfaces of the conductive ring, wherein the terminals at one end surface are plugged in at the depth no deeper than the bottoms of the slots. By the simple structure of the present invention, the conductive ring interacts with the terminals, wherein the first rolling direction can be differed from the second rolling direction by signals sent with time differential.
REFERENCES:
patent: 6097964 (2000-08-01), Nuovo et al.
patent: 6555768 (2003-04-01), Deruginsky et al.
patent: 6810265 (2004-10-01), Tochihara
patent: 6862459 (2005-03-01), Sawada et al.
Portis Shantell L.
Speed Tech Corp.
Troxell Law Office PLLC
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