Title:
TOUCH LOCATION DETERMINATION USING VIBRATION WAVE PACKET DISPERSION
Document Type and Number:
WIPO Patent Application WO2006071982
Kind Code:
A3
Abstract:
Methods and devices provide for determination of the location of a touch on a touch plate by sensing dispersive vibrations at each of a number of vibration sensors coupled to a touch plate, the vibrations caused by the touch on the touch plate. An amount of dispersion in the dispersive vibrations sensed at each of the vibration sensors is determined. A distance between the touch and each of the vibration sensors corresponding to the amount of dispersion in the dispersive vibrations sensed at each of the vibration sensors is calculated. The touch location is determined using some or all of the calculated distances.
Inventors:
PECHMAN ROBERT J (US)
GEAGHAN BERNARD O (US)
ROBERTS JERRY B (US)
GEAGHAN BERNARD O (US)
ROBERTS JERRY B (US)
Application Number:
PCT/US2005/047404
Publication Date:
September 21, 2006
Filing Date:
December 28, 2005
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
International Classes:
G06F3/043
Domestic Patent References:
| WO2003005292A1 | 2003-01-16 |
Foreign References:
| US5726686A | 1998-03-10 |
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