JPS56145474A - Coordinate reader - Google Patents

Coordinate reader

Info

Publication number
JPS56145474A
JPS56145474A JP4048280A JP4048280A JPS56145474A JP S56145474 A JPS56145474 A JP S56145474A JP 4048280 A JP4048280 A JP 4048280A JP 4048280 A JP4048280 A JP 4048280A JP S56145474 A JPS56145474 A JP S56145474A
Authority
JP
Japan
Prior art keywords
sense loop
loop
tablet
circumference
pitch
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.)
Granted
Application number
JP4048280A
Other languages
Japanese (ja)
Other versions
JPS5816507B2 (en
Inventor
Toshiyuki Makino
Takeshi Yamaguchi
Yoichi Hamanaka
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.)
Via Mechanics Ltd
Original Assignee
Hitachi Seiko Ltd
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 Hitachi Seiko Ltd filed Critical Hitachi Seiko Ltd
Priority to JP55040482A priority Critical patent/JPS5816507B2/en
Publication of JPS56145474A publication Critical patent/JPS56145474A/en
Publication of JPS5816507B2 publication Critical patent/JPS5816507B2/en
Expired 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
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To eliminate a detection position error at the circumference of a tablet by providing a correction sense loop to both terminals of a sense loop. CONSTITUTION:An electromagnetic induction system coordinate reader consists of exciting coil 1 and sense loop 3 formed rectangularly at constant intervals. To left and right terminals of this sense loop 3, correction sense loop 6 having a pitch relating to the sense loop pitch is provided. To find the shape of pitch of this loop 6, a magnetic field around the circular coil is calculated and integrated with respect to the plane of the sense loop. Consequently, a detection position error at the circumference of a tablet is eliminated and the tablet has high precision even at the circumference.
JP55040482A 1980-03-31 1980-03-31 coordinate reading device Expired JPS5816507B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55040482A JPS5816507B2 (en) 1980-03-31 1980-03-31 coordinate reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55040482A JPS5816507B2 (en) 1980-03-31 1980-03-31 coordinate reading device

Publications (2)

Publication Number Publication Date
JPS56145474A true JPS56145474A (en) 1981-11-12
JPS5816507B2 JPS5816507B2 (en) 1983-03-31

Family

ID=12581817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55040482A Expired JPS5816507B2 (en) 1980-03-31 1980-03-31 coordinate reading device

Country Status (1)

Country Link
JP (1) JPS5816507B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0415051A2 (en) * 1989-07-18 1991-03-06 Numonics Corporation Coordinate input device
EP0525413A2 (en) * 1991-07-09 1993-02-03 Seiko Instruments Inc. Coordinate input apparatus having correction sense line
US6639585B1 (en) 1999-07-29 2003-10-28 Brother Kogyo Kabushiki Kaisha Coordinate reading device
US6784876B1 (en) 1999-07-29 2004-08-31 Brother Kogyo Kabushiki Kaisha Coordinate reading device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0415051A2 (en) * 1989-07-18 1991-03-06 Numonics Corporation Coordinate input device
EP0415051A3 (en) * 1989-07-18 1992-03-11 Numonics Corporation Coordinate input device
EP0525413A2 (en) * 1991-07-09 1993-02-03 Seiko Instruments Inc. Coordinate input apparatus having correction sense line
EP0525413A3 (en) * 1991-07-09 1993-11-24 Seiko Instr Inc Coordinate input apparatus having correction sense line
US6639585B1 (en) 1999-07-29 2003-10-28 Brother Kogyo Kabushiki Kaisha Coordinate reading device
US6784876B1 (en) 1999-07-29 2004-08-31 Brother Kogyo Kabushiki Kaisha Coordinate reading device

Also Published As

Publication number Publication date
JPS5816507B2 (en) 1983-03-31

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