Title:
OBJECT DETECTION IN TOUCH SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2013/165306
Kind Code:
A3
Abstract:
A signal processor implements a technique for detecting objects on a panel which transmits signals inside the panel such that the objects are allowed to interact with (e.g. attenuate) the signals by contact with a touch surface of the panel. The signal processor operates to define cells that have a given location on the touch surface and are associated with a respective set of intersecting paths for the signals across the touch surface. The signal processor operates to obtain (70) an output signal from a signal detection arrangement that measures a signal property for each path; process (71) the output signal to obtain an interaction value for each path; and determine (73-75) a touch status of a selected cell among the cells by analyzing the distribution of interaction values for at least part of the intersecting paths. The touch status indicates presence or absence of one of the objects in the selected cell.
Inventors:
CHRISTIANSSON TOMAS (SE)
OHLSSON NICKLAS (SE)
BJOERKLUND ANDREAS (SE)
WALLANDER MATS PETTER (SE)
OHLSSON NICKLAS (SE)
BJOERKLUND ANDREAS (SE)
WALLANDER MATS PETTER (SE)
Application Number:
PCT/SE2013/050474
Publication Date:
April 03, 2014
Filing Date:
April 29, 2013
Export Citation:
Assignee:
FLATFROG LAB AB (SE)
International Classes:
G06F3/042; G06F3/041
Domestic Patent References:
| WO2011139213A1 | 2011-11-10 | |||
| WO2011049512A1 | 2011-04-28 | |||
| WO2011049513A1 | 2011-04-28 | |||
| WO2012082055A1 | 2012-06-21 |
Foreign References:
| US20090153519A1 | 2009-06-18 |
Other References:
See also references of EP 2845080A4
Attorney, Agent or Firm:
DAVIES, Dominic (FlatFrog Laboratories ABTraktorvägen 11, Lund, SE)
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