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Title:
OPTICAL TOUCH SCREEN
Document Type and Number:
WIPO Patent Application WO/2009/127909
Kind Code:
A3
Abstract:
A device may include a position sensitive detector that is configured to generate a value corresponding to a location associated with a shadow or absence of light on an upper surface of the position sensitive detector. The device may also include logic configured to receive the value, determine that a contact occurred on the display based on the value and determine a location of the contact based on the value.

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Inventors:
PASQUARIELLO DONATO (SE)
Application Number:
PCT/IB2008/052973
Publication Date:
June 24, 2010
Filing Date:
July 24, 2008
Export Citation:
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Assignee:
SONY ERICSSON MOBILE COMM AB (SE)
PASQUARIELLO DONATO (SE)
International Classes:
G06F3/042
Domestic Patent References:
WO2001086586A12001-11-15
Foreign References:
US4507557A1985-03-26
US20050128190A12005-06-16
US20050248540A12005-11-10
US4936683A1990-06-26
EP1471459A22004-10-27
US20080001072A12008-01-03
US20080084366A12008-04-10
US20050168134A12005-08-04
US5130556A1992-07-14
Other References:
See also references of EP 2263142A2
Attorney, Agent or Firm:
SNYDER, Glenn et al. (LLP11350 Random Hills Road,Suite 60, Fairfax VA, US)
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