WO2010006885A3 - Detecting the location of an object on a touch surface - Google Patents

Detecting the location of an object on a touch surface Download PDF

Info

Publication number
WO2010006885A3
WO2010006885A3 PCT/EP2009/057728 EP2009057728W WO2010006885A3 WO 2010006885 A3 WO2010006885 A3 WO 2010006885A3 EP 2009057728 W EP2009057728 W EP 2009057728W WO 2010006885 A3 WO2010006885 A3 WO 2010006885A3
Authority
WO
WIPO (PCT)
Prior art keywords
beams
sensing area
touch surface
location
panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2009/057728
Other languages
French (fr)
Other versions
WO2010006885A2 (en
Inventor
Ola Wassvik
Kennet Vilhelmsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FlatFrog Laboratories AB
Original Assignee
FlatFrog Laboratories AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FlatFrog Laboratories AB filed Critical FlatFrog Laboratories AB
Priority to US12/737,019 priority Critical patent/US8542217B2/en
Priority to EP09779866A priority patent/EP2318903A2/en
Publication of WO2010006885A2 publication Critical patent/WO2010006885A2/en
Publication of WO2010006885A3 publication Critical patent/WO2010006885A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • G06F3/0423—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen using sweeping light beams, e.g. using rotating or vibrating mirror
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04109—FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

An apparatus is controlled to detect a location of an object (O1) on a touch surface of a panel (1). An input scanner arrangement (BS1-BS2, 12A-12B) introduces at least two beams (B1, B2) of radiation into the panel (1) for propagation by internal reflection, and sweeps the beams (B1, B2) inside the panel across a sensing area. An output scanner arrangement (10A-10B, SD1-SD2) is synchronized with the input scanner arrangement so as to receive the beams (B1, B2) from the input scanner arrangement while they are swept across the sensing area and to direct the beams (B1, B2) onto at least one radiation detector. Thereby, each beam (B1, B2) is introduced and received on opposite ends of the sensing area. A data processor is connected to the radiation detector and operated to identify the location based on an attenuation of the beams (B1, B2) caused by the object (O1) touching the touch surface within the sensing area.
PCT/EP2009/057728 2008-06-23 2009-06-22 Detecting the location of an object on a touch surface Ceased WO2010006885A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/737,019 US8542217B2 (en) 2008-06-23 2009-06-22 Optical touch detection using input and output beam scanners
EP09779866A EP2318903A2 (en) 2008-06-23 2009-06-22 Detecting the location of an object on a touch surface

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US12937208P 2008-06-23 2008-06-23
SE0801467 2008-06-23
US61/129,372 2008-06-23
SE0801467-2 2008-06-23

Publications (2)

Publication Number Publication Date
WO2010006885A2 WO2010006885A2 (en) 2010-01-21
WO2010006885A3 true WO2010006885A3 (en) 2010-11-25

Family

ID=41258945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/057728 Ceased WO2010006885A2 (en) 2008-06-23 2009-06-22 Detecting the location of an object on a touch surface

Country Status (3)

Country Link
US (1) US8542217B2 (en)
EP (1) EP2318903A2 (en)
WO (1) WO2010006885A2 (en)

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US9811209B2 (en) 2012-02-21 2017-11-07 Flatfrog Laboratories Ab Touch determination with improved detection of weak interactions
WO2013133757A2 (en) 2012-03-09 2013-09-12 Flatfrog Laboratories Ab Efficient tomographic processing for touch determination
TW201403493A (en) 2012-03-09 2014-01-16 Flatfrog Lab Ab Efficient tomographic processing for touch determination
US10318041B2 (en) 2012-05-02 2019-06-11 Flatfrog Laboratories Ab Object detection in touch systems
WO2013165306A2 (en) 2012-05-02 2013-11-07 Flatfrog Laboratories Ab Object detection in touch systems
US10168835B2 (en) 2012-05-23 2019-01-01 Flatfrog Laboratories Ab Spatial resolution in touch displays
US9524060B2 (en) 2012-07-13 2016-12-20 Rapt Ip Limited Low power operation of an optical touch-sensitive device for detecting multitouch events
US9405382B2 (en) 2012-07-24 2016-08-02 Rapt Ip Limited Augmented optical waveguide for use in an optical touch sensitive device
WO2014168567A1 (en) 2013-04-11 2014-10-16 Flatfrog Laboratories Ab Tomographic processing for touch detection
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WO2015005847A1 (en) 2013-07-12 2015-01-15 Flatfrog Laboratories Ab Partial detect mode
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US10126882B2 (en) 2014-01-16 2018-11-13 Flatfrog Laboratories Ab TIR-based optical touch systems of projection-type
US10146376B2 (en) 2014-01-16 2018-12-04 Flatfrog Laboratories Ab Light coupling in TIR-based optical touch systems
US9983731B2 (en) 2014-02-21 2018-05-29 Qualcomm Incorporated System and method for reducing shadow effects in touch systems
US10161886B2 (en) 2014-06-27 2018-12-25 Flatfrog Laboratories Ab Detection of surface contamination
EP3250993B1 (en) 2015-01-28 2019-09-04 FlatFrog Laboratories AB Dynamic touch quarantine frames
US10318074B2 (en) 2015-01-30 2019-06-11 Flatfrog Laboratories Ab Touch-sensing OLED display with tilted emitters
WO2016130074A1 (en) 2015-02-09 2016-08-18 Flatfrog Laboratories Ab Optical touch system comprising means for projecting and detecting light beams above and inside a transmissive panel
US10401546B2 (en) 2015-03-02 2019-09-03 Flatfrog Laboratories Ab Optical component for light coupling
WO2017099657A1 (en) 2015-12-09 2017-06-15 Flatfrog Laboratories Ab Improved stylus identification
EP3545392A4 (en) 2016-11-24 2020-07-29 FlatFrog Laboratories AB AUTOMATIC OPTIMIZATION OF TOUCH SIGNALS
KR102495467B1 (en) 2016-12-07 2023-02-06 플라트프로그 라보라토리즈 에이비 An improved touch device
CN116679845A (en) 2017-02-06 2023-09-01 平蛙实验室股份公司 touch sensing device
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Also Published As

Publication number Publication date
US20110102374A1 (en) 2011-05-05
WO2010006885A2 (en) 2010-01-21
US8542217B2 (en) 2013-09-24
EP2318903A2 (en) 2011-05-11

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