Title:
VIBRATION SENSING TOUCH INPUT DEVICE
Document Type and Number:
WIPO Patent Application WO2006039033
Kind Code:
A3
Abstract:
The present invention provides a touch sensitive input device that uses vibrations due to touch impacts and/or frictional movement of a touch implement across a surface to determine information related to the touch, such as touch position. The present invention also provides for detecting lift-off events in such vibration sensing input devices. Lift-off detection can be accomplished by monitoring for a signal that indicates a sustained touch on the touch plate, and correlating a change in such a signal with a lift-off event. Signals indicating a sustained touch can include low frequency rumbles coupled into the touch plate via the touch implement, touch plate bending under the force of a sustained touch, and touch plate displacement under the force of a sustained touch.
Inventors:
HILL NICHOLAS P R (GB)
SULLIVAN DARIUS M (GB)
SULLIVAN DARIUS M (GB)
Application Number:
PCT/US2005/030959
Publication Date:
December 21, 2006
Filing Date:
August 29, 2005
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
International Classes:
G06F3/033; G06F3/041
Domestic Patent References:
| WO2005066756A2 | 2005-07-21 |
Foreign References:
| US20020144886A1 | 2002-10-10 | |||
| US20020135570A1 | 2002-09-26 | |||
| US20040160421A1 | 2004-08-19 | |||
| US6262717B1 | 2001-07-17 | |||
| EP0561339A1 | 1993-09-22 | |||
| EP0474232A2 | 1992-03-11 |
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