WO2002007072A3 - Touch panel display system - Google Patents

Touch panel display system Download PDF

Info

Publication number
WO2002007072A3
WO2002007072A3 PCT/NZ2001/000146 NZ0100146W WO0207072A3 WO 2002007072 A3 WO2002007072 A3 WO 2002007072A3 NZ 0100146 W NZ0100146 W NZ 0100146W WO 0207072 A3 WO0207072 A3 WO 0207072A3
Authority
WO
WIPO (PCT)
Prior art keywords
energy beams
emitters
display screen
touch
interrupted
Prior art date
Application number
PCT/NZ2001/000146
Other languages
French (fr)
Other versions
WO2002007072A2 (en
Inventor
John David Newton
Original Assignee
Next Holdings Ltd
John David Newton
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 Next Holdings Ltd, John David Newton filed Critical Next Holdings Ltd
Priority to AU2001282713A priority Critical patent/AU2001282713A1/en
Publication of WO2002007072A2 publication Critical patent/WO2002007072A2/en
Publication of WO2002007072A3 publication Critical patent/WO2002007072A3/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
    • G06F3/042—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

Abstract

Emitters and one or more detectors are positioned in proximity to a display screen. Emitters emit energy beams that are diverged across the surface of the display screen. Emitters may be activated/deactivated in sequence, rapid enough to substantially ensure that several energy beams are interrupted by a touch of the display screen. Detectors receive energy beams over a range of angles and generate detection signals upon detecting energy beams. Detection maps are generated based on detection signals. Detection maps indicate which detector sould receive an energy beam from which emitter at any point in time. Detection maps are compared to determine that energy beams have been interrupted by a touch. Based on the interrupted energy beams, the location of the touch on the display screen may be determined. The invention serves to reduce the number of emitters and detectors required in touch panel display system and/or increase the sensitivity and accuracy thereof.
PCT/NZ2001/000146 2000-07-19 2001-07-19 Touch panel display system WO2002007072A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001282713A AU2001282713A1 (en) 2000-07-19 2001-07-19 Touch panel display system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NZ505239 2000-07-19
NZ50523900 2000-07-19
NZ50954701 2001-01-26
NZ509547 2001-01-26

Publications (2)

Publication Number Publication Date
WO2002007072A2 WO2002007072A2 (en) 2002-01-24
WO2002007072A3 true WO2002007072A3 (en) 2002-12-19

Family

ID=26652183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2001/000146 WO2002007072A2 (en) 2000-07-19 2001-07-19 Touch panel display system

Country Status (3)

Country Link
US (1) US6690363B2 (en)
AU (1) AU2001282713A1 (en)
WO (1) WO2002007072A2 (en)

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