Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2007-03-27
2007-03-27
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C345S174000, C178S018010
Reexamination Certificate
active
10804025
ABSTRACT:
A position touch screen panel using a unique pattern of arranging the resistive sensing circuit, in which the touch screen panel is formed by two substrates symmetrically overlapped, having four sensor lines extending along the periphery of the substrates and creating parallel connections to cover four corners, such that at least one pair of parallel connections in opposite corners (on diagonal corners) shall attain matching voltages, where the matching voltages shall be realized only if high voltage is measured from parallel connections at one corner; and low voltage is measured from parallel connections in an opposite corner; whereby voltage levels at corner points are defined relative to other corner points on one sensor line, not from comparison of two sensor lines. Using the above circuit arrangement, the touch screen panel is able to determine the touch position accurately.
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patent: 6380931 (2002-04-01), Gillespie et al.
patent: 6630896 (2003-10-01), Nathan
patent: 2002/0090798 (2002-07-01), Ahn et al.
patent: 2003/0222857 (2003-12-01), Abileah
patent: 2004/0217945 (2004-11-01), Miyamoto et al.
Bacon & Thomas PLLC
Hjerpe Richard
Said Mansour M.
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