CA2698623C - Correcting for ambient light in an optical touch-sensitive device - Google Patents

Correcting for ambient light in an optical touch-sensitive device Download PDF

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Publication number
CA2698623C
CA2698623C CA2698623A CA2698623A CA2698623C CA 2698623 C CA2698623 C CA 2698623C CA 2698623 A CA2698623 A CA 2698623A CA 2698623 A CA2698623 A CA 2698623A CA 2698623 C CA2698623 C CA 2698623C
Authority
CA
Canada
Prior art keywords
pixels
field
ambient light
image data
frame
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.)
Expired - Fee Related
Application number
CA2698623A
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English (en)
French (fr)
Other versions
CA2698623A1 (en
Inventor
Nigel Keam
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.)
Microsoft Corp
Original Assignee
Microsoft Corp
Microsoft Technology Licensing LLC
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 Microsoft Corp, Microsoft Technology Licensing LLC filed Critical Microsoft Corp
Publication of CA2698623A1 publication Critical patent/CA2698623A1/en
Application granted granted Critical
Publication of CA2698623C publication Critical patent/CA2698623C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment

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)
  • Liquid Crystal (AREA)
  • Image Input (AREA)
CA2698623A 2007-10-05 2008-10-01 Correcting for ambient light in an optical touch-sensitive device Expired - Fee Related CA2698623C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/868,466 2007-10-05
US11/868,466 US8004502B2 (en) 2007-10-05 2007-10-05 Correcting for ambient light in an optical touch-sensitive device
PCT/US2008/078515 WO2009046154A2 (en) 2007-10-05 2008-10-01 Correcting for ambient light in an optical touch-sensitive device

Publications (2)

Publication Number Publication Date
CA2698623A1 CA2698623A1 (en) 2009-04-09
CA2698623C true CA2698623C (en) 2014-03-11

Family

ID=40522867

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2698623A Expired - Fee Related CA2698623C (en) 2007-10-05 2008-10-01 Correcting for ambient light in an optical touch-sensitive device

Country Status (7)

Country Link
US (1) US8004502B2 (enExample)
EP (1) EP2206033B1 (enExample)
JP (1) JP5134688B2 (enExample)
KR (1) KR101465835B1 (enExample)
CN (1) CN101815979B (enExample)
CA (1) CA2698623C (enExample)
WO (1) WO2009046154A2 (enExample)

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Also Published As

Publication number Publication date
EP2206033B1 (en) 2018-04-04
WO2009046154A3 (en) 2009-07-02
CN101815979B (zh) 2013-05-29
CN101815979A (zh) 2010-08-25
CA2698623A1 (en) 2009-04-09
KR20100063765A (ko) 2010-06-11
JP2011501841A (ja) 2011-01-13
US8004502B2 (en) 2011-08-23
EP2206033A2 (en) 2010-07-14
EP2206033A4 (en) 2012-06-13
KR101465835B1 (ko) 2014-11-26
US20090091554A1 (en) 2009-04-09
WO2009046154A2 (en) 2009-04-09
JP5134688B2 (ja) 2013-01-30

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