Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2007-10-23
2007-10-23
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C178S018060
Reexamination Certificate
active
10153261
ABSTRACT:
An integrated display and object sensing user input device is described. Display components and electric field sensing components are provided on a substrate. Also described is a sensing circuit for detecting current induced in a receiving electrode of an electric field sensing arrangement, wherein the sensing circuit employs two-phase charge accumulation. In operation, two effective circuit parts are selected alternately according to the phase of a voltage concurrently causing electric field emission, such that charge is accumulated in the same charge sense during operation of both effective circuit parts. Plural thin film electric field sensing circuits and electrodes may be arrayed to provide an object sensing array, usable as an input device.
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J.R. Smith, Fiedl mice: extracting hand geometry from electric field measurements, IBM, vol. 35.
Abdulselam Abbas I.
Hjerpe Richard
Koninklijke Philips Electronics , N.V.
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