DE68924514D1 - Verfahren zur Ausblendung der Aberrationen der reflektierenden Oberfläche eines laserberührungsempfindlichen Bildschirms. - Google Patents

Verfahren zur Ausblendung der Aberrationen der reflektierenden Oberfläche eines laserberührungsempfindlichen Bildschirms.

Info

Publication number
DE68924514D1
DE68924514D1 DE68924514T DE68924514T DE68924514D1 DE 68924514 D1 DE68924514 D1 DE 68924514D1 DE 68924514 T DE68924514 T DE 68924514T DE 68924514 T DE68924514 T DE 68924514T DE 68924514 D1 DE68924514 D1 DE 68924514D1
Authority
DE
Germany
Prior art keywords
aberrations
masking
laser
reflective surface
sensitive screen
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
DE68924514T
Other languages
English (en)
Other versions
DE68924514T2 (de
Inventor
Larry Allen Blue
Bruce Todd Freedman
Jose Francisco Gonzalez-Heres
Alexander Garland Macinnis
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE68924514D1 publication Critical patent/DE68924514D1/de
Application granted granted Critical
Publication of DE68924514T2 publication Critical patent/DE68924514T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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; 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

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)
DE68924514T 1988-09-30 1989-08-16 Verfahren zur Ausblendung der Aberrationen der reflektierenden Oberfläche eines laserberührungsempfindlichen Bildschirms. Expired - Fee Related DE68924514T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25160488A 1988-09-30 1988-09-30

Publications (2)

Publication Number Publication Date
DE68924514D1 true DE68924514D1 (de) 1995-11-16
DE68924514T2 DE68924514T2 (de) 1996-06-05

Family

ID=22952659

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68924514T Expired - Fee Related DE68924514T2 (de) 1988-09-30 1989-08-16 Verfahren zur Ausblendung der Aberrationen der reflektierenden Oberfläche eines laserberührungsempfindlichen Bildschirms.

Country Status (3)

Country Link
EP (1) EP0362109B1 (de)
JP (1) JPH0731573B2 (de)
DE (1) DE68924514T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248856A (en) * 1992-10-07 1993-09-28 Microfield Graphics, Inc. Code-based, electromagnetic-field-responsive graphic data-acquisition system
JP3934846B2 (ja) 2000-03-06 2007-06-20 株式会社リコー 座標入力／検出装置、電子黒板システム、受光素子の位置ズレ補正方法及び記憶媒体
DE10085455T1 (de) 2000-04-14 2003-02-27 Fujitsu Ltd Optische Positionsdetektiervorrichtung und Aufzeichnungsmedium
US20070024584A1 (en) * 2005-08-01 2007-02-01 Chee-Heng Wong System and method for fault detection and recovery for an optical input area
JP2006138867A (ja) * 2005-12-28 2006-06-01 Fujitsu Ltd 光学式位置検出装置及び記録媒体
CN101546235B (zh) * 2008-03-28 2011-07-27 旭丽电子(广州)有限公司 触控面板模块及决定触控面板上压触点位置的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4645920A (en) * 1984-10-31 1987-02-24 Carroll Touch, Inc. Early fault detection in an opto-matrix touch input device
AU4907185A (en) * 1984-11-08 1986-05-15 Spacelabs, Inc. Radiant beam co-ordinate detector system
US4762990A (en) * 1985-10-21 1988-08-09 International Business Machines Corporation Data processing input interface determining position of object
JPS62127929A (ja) * 1985-11-29 1987-06-10 Hitachi Ltd 座標入力装置

Also Published As

Publication number Publication date
EP0362109A2 (de) 1990-04-04
EP0362109B1 (de) 1995-10-11
JPH02116918A (ja) 1990-05-01
EP0362109A3 (en) 1990-09-05
JPH0731573B2 (ja) 1995-04-10
DE68924514T2 (de) 1996-06-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee