JPS6413617A - Coordinate input device - Google Patents
Coordinate input deviceInfo
- Publication number
- JPS6413617A JPS6413617A JP16859387A JP16859387A JPS6413617A JP S6413617 A JPS6413617 A JP S6413617A JP 16859387 A JP16859387 A JP 16859387A JP 16859387 A JP16859387 A JP 16859387A JP S6413617 A JPS6413617 A JP S6413617A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- acoustic impedance
- area
- transmission plate
- peripheral part
- 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
Links
Abstract
PURPOSE:To reduce the noise for vibration detection and to improve the precision of coordinate detection by setting the acoustic impedance in the peripheral part of an vibration transmission plate so that it is gradually changed from the center part toward the peripheral part. CONSTITUTION:Since an vibration-proof material 7 consists of continuity of wedge-shaped unit shapes 7', the change of the acoustic impedance which is changed in the direction of an arrow (d) from the center part of an vibration transmission plate 8 toward the peripheral part of the plate 8 can be considered as a ratio of the area of setting parts of the vibration-proof material 7 having an vibration absorbing property to the area of non-setting parts. Consequently, the acoustic impedance is gradually reduced toward the peripheral part of the vibration transmission plate 8 along the direction of the arrow (d). Since a reflected wave is generated in the part where the acoustic impedance of a medium is quickly changed, the vibration-proof material 7 having this shape is used to eliminate the quick change of acoustic impedance in the peripheral area of the vibration transmission plate 8, and the occurrence of the reflected wave in this area is considerably reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16859387A JPH0758453B2 (en) | 1987-07-08 | 1987-07-08 | Coordinate input device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16859387A JPH0758453B2 (en) | 1987-07-08 | 1987-07-08 | Coordinate input device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6413617A true JPS6413617A (en) | 1989-01-18 |
JPH0758453B2 JPH0758453B2 (en) | 1995-06-21 |
Family
ID=15870929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16859387A Expired - Fee Related JPH0758453B2 (en) | 1987-07-08 | 1987-07-08 | Coordinate input device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0758453B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007511015A (en) * | 2003-11-12 | 2007-04-26 | タイコ エレクトロニクス コーポレイション | Sonic touch detector |
EP2080188A2 (en) * | 2006-10-05 | 2009-07-22 | Pegasus Technologies Ltd. | Digital pen system, transmitter devices, receiving devices, and methods of manufacturing and using the same |
-
1987
- 1987-07-08 JP JP16859387A patent/JPH0758453B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007511015A (en) * | 2003-11-12 | 2007-04-26 | タイコ エレクトロニクス コーポレイション | Sonic touch detector |
EP2080188A2 (en) * | 2006-10-05 | 2009-07-22 | Pegasus Technologies Ltd. | Digital pen system, transmitter devices, receiving devices, and methods of manufacturing and using the same |
EP2080188A4 (en) * | 2006-10-05 | 2012-05-16 | Pegasus Technologies Ltd | Digital pen system, transmitter devices, receiving devices, and methods of manufacturing and using the same |
Also Published As
Publication number | Publication date |
---|---|
JPH0758453B2 (en) | 1995-06-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |