JPS5680733A - Coordinate input device - Google Patents

Coordinate input device

Info

Publication number
JPS5680733A
JPS5680733A JP15739079A JP15739079A JPS5680733A JP S5680733 A JPS5680733 A JP S5680733A JP 15739079 A JP15739079 A JP 15739079A JP 15739079 A JP15739079 A JP 15739079A JP S5680733 A JPS5680733 A JP S5680733A
Authority
JP
Japan
Prior art keywords
coordinate
signal
coordinate information
oscillator
constitution
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
JP15739079A
Other languages
Japanese (ja)
Inventor
Hiroyuki Mori
Yozo Sudo
Toru Yokoyama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15739079A priority Critical patent/JPS5680733A/en
Publication of JPS5680733A publication Critical patent/JPS5680733A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate influence of noises of a short break, chattering, etc., without modifying the constitution of a coordinate information input part, by using a peak value, detected within a prescribed time width, as current coordinate information.
CONSTITUTION: On resistance board 12 connecting with diodes 24 and 26, a pressure-sensitive, conductive rubber sheet and flexible conductor 16 connected to point 32a of coordinate information detecting circuit 32 are mounted and a bipolar rec tangular wave signal of tens Hz is applied from oscillator 28. When this signal is at a positive voltage, an X-directional potential gradient is obtained and when at a negative voltage, a Y-directional potential gradient is obtained. The value of the X coordinate varying with time is detected as a current peak value by peak detecting circuit 36 in every cycle of the output of oscillator 28 and it is sampled and held by sample holding circuit 38 and smoothed by low-pass filter 40 to obtain the X coordinate signal. Similarly, Y coordinate signal Voy is also obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP15739079A 1979-12-06 1979-12-06 Coordinate input device Pending JPS5680733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15739079A JPS5680733A (en) 1979-12-06 1979-12-06 Coordinate input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15739079A JPS5680733A (en) 1979-12-06 1979-12-06 Coordinate input device

Publications (1)

Publication Number Publication Date
JPS5680733A true JPS5680733A (en) 1981-07-02

Family

ID=15648584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15739079A Pending JPS5680733A (en) 1979-12-06 1979-12-06 Coordinate input device

Country Status (1)

Country Link
JP (1) JPS5680733A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58105390A (en) * 1981-12-16 1983-06-23 Nec Corp Coordinate input device
JPS6381520A (en) * 1986-09-25 1988-04-12 Pentel Kk Coordinate signal detector
JPS63140320A (en) * 1983-05-23 1988-06-11 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Position detection for power sensing type data input unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58105390A (en) * 1981-12-16 1983-06-23 Nec Corp Coordinate input device
JPS63140320A (en) * 1983-05-23 1988-06-11 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Position detection for power sensing type data input unit
JPS6381520A (en) * 1986-09-25 1988-04-12 Pentel Kk Coordinate signal detector

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