Invention Grant
- Patent Title: Touch sensing with touch down and lift off sensitivity
- Patent Title (中): 触摸触摸感应，并提供灵敏度
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Application No.: US11865237Application Date: 2007-10-01
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Publication No.: US08217917B2Publication Date: 2012-07-10
- Inventor: Nicholas P. R. Hill , Darius M. Sullivan
- Applicant: Nicholas P. R. Hill , Darius M. Sullivan
- Applicant Address: US MN Saint Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN Saint Paul
- Agent Steven A. Bern
- Main IPC: G09G5/00
- IPC: G09G5/00
Abstract:
A touch sensing device includes a plurality of sensors and an emitting transducer coupled to a touch panel. The transducer induces bending waves in the touch panel. The sensors sense bending waves in the touch panel and generate a bending wave signal responsive to the sensed bending waves. A controller identifies an untouched condition signal responsive to the induced bending waves. The controller compares the untouched condition signal to the bending wave signal, and detects a touch on the touch panel based on the comparison.
Public/Granted literature
- US20080018618A1 TOUCH SENSING WITH TOUCH DOWN AND LIFT OFF SENSITIVITY Public/Granted day:2008-01-24
Information query
