JPS54104241A - Input device of electromagnetic coupling type - Google Patents
Input device of electromagnetic coupling typeInfo
- 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
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
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)
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 |
-
1978
- 1978-02-02 JP JP991178A patent/JPS54104241A/en active Pending
Cited By (2)
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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