JPS6413617A - Coordinate input device - Google Patents

Coordinate input device

Info

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
Application number
JP16859387A
Other languages
Japanese (ja)
Other versions
JPH0758453B2 (en
Inventor
Yuichiro Yoshimura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP16859387A priority Critical patent/JPH0758453B2/en
Publication of JPS6413617A publication Critical patent/JPS6413617A/en
Publication of JPH0758453B2 publication Critical patent/JPH0758453B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
JP16859387A 1987-07-08 1987-07-08 Coordinate input device Expired - Fee Related JPH0758453B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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