Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2011-01-11
2011-01-11
Nguyen, Kevin M (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C178S019070
Reexamination Certificate
active
07868874
ABSTRACT:
Methods, systems and devices are described for detecting a position-based attribute of a finger, stylus or other object with a touchpad or other sensor having a touch-sensitive region that includes a plurality of electrodes. Modulation signals for one or more electrodes are produced as a function of any number of distinct digital codes. The modulation signals are applied to an associated at least one of the plurality of electrodes to obtain a resultant signal that is electrically affected by the position of the object. The resultant signal is demodulated using the plurality of distinct digital codes to discriminate electrical effects produced by the object. The position-based attribute of the object is then determined with respect to the plurality of electrodes from the electrical effects.
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Ingrassia Fisher & Lorenz P.C.
Nguyen Kevin M
Synaptics Incorporated
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