JPS54104241A - Input device of electromagnetic coupling type - Google Patents

Input device of electromagnetic coupling type

Info

Publication number
JPS54104241A
JPS54104241A JP991178A JP991178A JPS54104241A JP S54104241 A JPS54104241 A JP S54104241A JP 991178 A JP991178 A JP 991178A JP 991178 A JP991178 A JP 991178A JP S54104241 A JPS54104241 A JP S54104241A
Authority
JP
Japan
Prior art keywords
electromotive force
sense line
electromagnetic coupling
magnetic
input device
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.)
Pending
Application number
JP991178A
Other languages
Japanese (ja)
Inventor
Mikio Suzuki
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP991178A priority Critical patent/JPS54104241A/en
Publication of JPS54104241A publication Critical patent/JPS54104241A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To increase a S/N ratio with read induced-electromotive force enlarged in an electromagnetic coupling type input device which inputs characters, symbols or addresses of the x-y coordinates to a computer making use of electromagnetic coupling.
CONSTITUTION: Flowing a current to driving line "⊗" equalizes the numbers of positive and negative magnetic fluxes inrersecting loops produced by sense line "○" and they are neutralized mutually, so that no induced electromotive force will be developed across sense line "○". The approach of magnetic substance P, howevr, disturbs magnetic-flux distribution, so that induced electromotive force will be developed across the sense line. To enlarge the induced electromotive force, platelike ferromagnetic substance M is arranged closely under the driving line and sense line and fluxes near the tip of magnetic substance P are absorbed by ferromagnetic substance M so as to increase the disturbance.
COPYRIGHT: (C)1979,JPO&Japio
JP991178A 1978-02-02 1978-02-02 Input device of electromagnetic coupling type Pending JPS54104241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP991178A JPS54104241A (en) 1978-02-02 1978-02-02 Input device of electromagnetic coupling type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP991178A JPS54104241A (en) 1978-02-02 1978-02-02 Input device of electromagnetic coupling type

Publications (1)

Publication Number Publication Date
JPS54104241A true JPS54104241A (en) 1979-08-16

Family

ID=11733282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP991178A Pending JPS54104241A (en) 1978-02-02 1978-02-02 Input device of electromagnetic coupling type

Country Status (1)

Country Link
JP (1) JPS54104241A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60150119A (en) * 1984-01-13 1985-08-07 Wacom Co Ltd Coordinate input device provided with display

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60150119A (en) * 1984-01-13 1985-08-07 Wacom Co Ltd Coordinate input device provided with display
JPH0259488B2 (en) * 1984-01-13 1990-12-12 Wakomu Kk

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