JPS54134928A - Coordinate detection system of data input device - Google Patents

Coordinate detection system of data input device

Info

Publication number
JPS54134928A
JPS54134928A JP4214378A JP4214378A JPS54134928A JP S54134928 A JPS54134928 A JP S54134928A JP 4214378 A JP4214378 A JP 4214378A JP 4214378 A JP4214378 A JP 4214378A JP S54134928 A JPS54134928 A JP S54134928A
Authority
JP
Japan
Prior art keywords
multiplexer
axial
switch
time
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
Application number
JP4214378A
Other languages
Japanese (ja)
Inventor
Hiroshi Yagi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4214378A priority Critical patent/JPS54134928A/en
Publication of JPS54134928A publication Critical patent/JPS54134928A/en
Pending legal-status Critical Current

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  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To avoid an error input caused by a contact defect such as chattering, by allowing an input after conforming a state for a constant time by scanning sequentially switch elements arranged in a matrix.
CONSTITUTION: Switch elements arranged in a matrix are scanned on by multiplexer 14 controlled by X-adderss counter 5 at any time. With one switch ON now, one of transistors Tr1 to Trs connected to the Y-axial position turns ON. Then, X-axial multiplexer 14 stops at the corresponding address, the Y-address counter starts immediately, and the Y-axial multiplexer operates. When the Y- axial multiplexer indicates the corresponding address, inputting is performed. Namely, both X and Y inputs deviate in terms of time and since it is required that the switch should be being depressed for the period, an error input such as chattering can be prevented.
COPYRIGHT: (C)1979,JPO&Japio
JP4214378A 1978-04-12 1978-04-12 Coordinate detection system of data input device Pending JPS54134928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4214378A JPS54134928A (en) 1978-04-12 1978-04-12 Coordinate detection system of data input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4214378A JPS54134928A (en) 1978-04-12 1978-04-12 Coordinate detection system of data input device

Publications (1)

Publication Number Publication Date
JPS54134928A true JPS54134928A (en) 1979-10-19

Family

ID=12627710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4214378A Pending JPS54134928A (en) 1978-04-12 1978-04-12 Coordinate detection system of data input device

Country Status (1)

Country Link
JP (1) JPS54134928A (en)

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