WO2003049002A3 - Touch screen calibration system and method - Google Patents

Touch screen calibration system and method Download PDF

Info

Publication number
WO2003049002A3
WO2003049002A3 PCT/US2002/030859 US0230859W WO03049002A3 WO 2003049002 A3 WO2003049002 A3 WO 2003049002A3 US 0230859 W US0230859 W US 0230859W WO 03049002 A3 WO03049002 A3 WO 03049002A3
Authority
WO
WIPO (PCT)
Prior art keywords
touch screen
calibration system
calculated
terminal
terminals
Prior art date
Application number
PCT/US2002/030859
Other languages
French (fr)
Other versions
WO2003049002A2 (en
Inventor
Karl P Hauck
Luke D R Hares
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to AU2002334709A priority Critical patent/AU2002334709A1/en
Priority to KR1020047008233A priority patent/KR100918884B1/en
Priority to JP2003550123A priority patent/JP2005512197A/en
Priority to EP02804392A priority patent/EP1449059A2/en
Publication of WO2003049002A2 publication Critical patent/WO2003049002A2/en
Publication of WO2003049002A3 publication Critical patent/WO2003049002A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F3/04186—Touch location disambiguation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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

Abstract

A touch screen calibration system and method applies a signal to a terminals of a touch screen and applies a calibration impedance to those terminals; the effect of the calibration impedance applied to the terminals is sensed; the X, Y position for each terminal is calculated upon application of the calibration impedance and the offset error for each terminal is calculated and applied to obtain the corrected touch position for a measured touch position; in addition the gain error may be calculated for each terminal and applied to obtain the corrected touch position.
PCT/US2002/030859 2001-11-30 2002-09-30 Touch screen calibration system and method WO2003049002A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2002334709A AU2002334709A1 (en) 2001-11-30 2002-09-30 Touch screen calibration system and method
KR1020047008233A KR100918884B1 (en) 2001-11-30 2002-09-30 Touch screen calibration system and method
JP2003550123A JP2005512197A (en) 2001-11-30 2002-09-30 Touch screen calibration system and method
EP02804392A EP1449059A2 (en) 2001-11-30 2002-09-30 Touch screen calibration system and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/998,699 2001-11-30
US09/998,699 US6977646B1 (en) 2001-11-30 2001-11-30 Touch screen calibration system and method

Publications (2)

Publication Number Publication Date
WO2003049002A2 WO2003049002A2 (en) 2003-06-12
WO2003049002A3 true WO2003049002A3 (en) 2004-06-17

Family

ID=25545482

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/030859 WO2003049002A2 (en) 2001-11-30 2002-09-30 Touch screen calibration system and method

Country Status (7)

Country Link
US (2) US6977646B1 (en)
EP (1) EP1449059A2 (en)
JP (1) JP2005512197A (en)
KR (1) KR100918884B1 (en)
CN (1) CN1327322C (en)
AU (1) AU2002334709A1 (en)
WO (1) WO2003049002A2 (en)

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AU2002334709A1 (en) 2003-06-17
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JP2005512197A (en) 2005-04-28
WO2003049002A2 (en) 2003-06-12

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