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Title:
TOUCH SENSITIVE DEVICE WITH STYLUS SUPPORT
Document Type and Number:
WIPO Patent Application WO/2012/033630
Kind Code:
A3
Abstract:
A touch-sensitive device with stylus includes a touch panel, a touch panel drive unit, a stylus sense unit, and a measurement unit. A touch by a stylus proximate to a touch panel electrode changes a capacitive coupling between the touch panel electrode and a stylus electrode. The amplitude of the response signal is responsive to the capacitive coupling between the touch panel electrode and the stylus electrode, and is measured to provide an indication of the position of the stylus electrode relative to the touch panel.

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Inventors:
WEAVER BILLY L (US)
REBESCHI THOMAS J (US)
HABLE BROCK A (US)
Application Number:
PCT/US2011/048557
Publication Date:
May 31, 2012
Filing Date:
August 22, 2011
Export Citation:
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Assignee:
3M INNOVATIVE PROPERTIES CO (US)
International Classes:
G06F3/044; G06F3/03; G06F3/041; G09G3/20
Foreign References:
JP2010067117A2010-03-25
JP2004005415A2004-01-08
JPH0895701A1996-04-12
JPH0764704A1995-03-10
Other References:
See also references of EP 2614425A4
Attorney, Agent or Firm:
BERN, Steven A. et al. (Office of Intellectual Property CounselPost Office Box 3342, Saint Paul Minnesota, US)
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