Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2007-11-21
2011-11-15
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
Reexamination Certificate
active
08059103
ABSTRACT:
Systems and methods determine the position of a touch on a surface of a device, such as a touch-sensitive device, by using position-dependent electrical charges. In such a method, the position of a touching implement is determined on the sensing surface of a device. The method includes generating signals on the surface of the device to create a position-dependent electrical charge on the touching implement; and measuring the position-dependent electrical charge to indicate a coordinate on the sensing surface for establishing the position of the touching implement.
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3M Innovative Properties Company
Bern Steven A.
Hjerpe Richard
Parker Jeffrey
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