JPS63308630A - Position detector - Google Patents

Position detector

Info

Publication number
JPS63308630A
JPS63308630A JP14467987A JP14467987A JPS63308630A JP S63308630 A JPS63308630 A JP S63308630A JP 14467987 A JP14467987 A JP 14467987A JP 14467987 A JP14467987 A JP 14467987A JP S63308630 A JPS63308630 A JP S63308630A
Authority
JP
Japan
Prior art keywords
resistance
voltage
pressing input
resistance plate
plate
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
JP14467987A
Other languages
Japanese (ja)
Inventor
Kazuhiro Maeda
Susumu Nishimoto
Noribumi Matsui
Original Assignee
Matsushita Electric Ind Co 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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to JP14467987A priority Critical patent/JPS63308630A/en
Publication of JPS63308630A publication Critical patent/JPS63308630A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To correctly detect a position by preventing the detecting as a pressing input, since, in the case of a large contact resistance, a voltage drop to flow there is large and an error is easily occurred.
CONSTITUTION: When a pressing input is occurred at P-points on a first resistance plate O and a second resistance plate 3, a closed circuit is formed with a constant voltage source 10 and a switch 8, the electrode 2 of the resistance plate O, a resistance 24 between the electrode 2 and the pressurized point P, a contact resistance 25 between the resistance plates 3 at the pressurized point P, a resistance 26 between electrodes 4 of the resistance plate 3 from the pressurized point P, a switch 18 and a voltage divider 19. For this reason, a current flows in the voltage divider 19 and a voltage is generated in a partial pressure terminal 17. This voltage is converted to digital data by an analog-digital converter 21 and it is compared with a voltage value negligible from the influence of the contact resistance 25 by a data processor 22. When it is larger, it is judged that the pressing input exists. Thus, the accuracy of the position detection can be increased without receiving the influence of noise.
COPYRIGHT: (C)1988,JPO&Japio
JP14467987A 1987-06-10 1987-06-10 Position detector Pending JPS63308630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14467987A JPS63308630A (en) 1987-06-10 1987-06-10 Position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14467987A JPS63308630A (en) 1987-06-10 1987-06-10 Position detector

Publications (1)

Publication Number Publication Date
JPS63308630A true JPS63308630A (en) 1988-12-16

Family

ID=15367731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14467987A Pending JPS63308630A (en) 1987-06-10 1987-06-10 Position detector

Country Status (1)

Country Link
JP (1) JPS63308630A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05127826A (en) * 1991-11-08 1993-05-25 Sharp Corp Coordinate input device
JPH05127827A (en) * 1991-11-01 1993-05-25 Sharp Corp Touch panel input device
US7106308B2 (en) 2002-03-22 2006-09-12 Fujitsu Component Limited Input device and electronic device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05127827A (en) * 1991-11-01 1993-05-25 Sharp Corp Touch panel input device
JPH05127826A (en) * 1991-11-08 1993-05-25 Sharp Corp Coordinate input device
US7106308B2 (en) 2002-03-22 2006-09-12 Fujitsu Component Limited Input device and electronic device

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