JPS5583917A - Two-way data transfer system between plural units - Google Patents

Two-way data transfer system between plural units

Info

Publication number
JPS5583917A
JPS5583917A JP15878178A JP15878178A JPS5583917A JP S5583917 A JPS5583917 A JP S5583917A JP 15878178 A JP15878178 A JP 15878178A JP 15878178 A JP15878178 A JP 15878178A JP S5583917 A JPS5583917 A JP S5583917A
Authority
JP
Japan
Prior art keywords
transmitted
units
data transfer
way data
leading word
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
JP15878178A
Other languages
Japanese (ja)
Inventor
Kuniaki Suzuki
Akira Sato
Munetoshi Ando
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 JP15878178A priority Critical patent/JPS5583917A/en
Publication of JPS5583917A publication Critical patent/JPS5583917A/en
Pending legal-status Critical Current

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  • Information Transfer Systems (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE: To always transmit the leading word first in case the information is transmitted to each input/output device from the channel, thus securing the simple identification for each input/output device whether the reception information is the up- of down-telegram by the presence or absence of the word.
CONSTITUTION: Like 1st control unit 2 possessing a set of the receiver and the driver, plural number of 2nd control unit 3Wn possessing a set of the receiver and the driver each are connected to common transmission line L0. The two-way data transfer is carried out among these control units. The leading word detector is provided to units 3Wn, and thus the leading word is first transmitted in case the information is transmitted from unit 2 to units 3Wn. After this, the command or data is transmitted, and at the same time the lead is detected via the leading word detector to receive the command.
COPYRIGHT: (C)1980,JPO&Japio
JP15878178A 1978-12-19 1978-12-19 Two-way data transfer system between plural units Pending JPS5583917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15878178A JPS5583917A (en) 1978-12-19 1978-12-19 Two-way data transfer system between plural units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15878178A JPS5583917A (en) 1978-12-19 1978-12-19 Two-way data transfer system between plural units

Publications (1)

Publication Number Publication Date
JPS5583917A true JPS5583917A (en) 1980-06-24

Family

ID=15679183

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15878178A Pending JPS5583917A (en) 1978-12-19 1978-12-19 Two-way data transfer system between plural units

Country Status (1)

Country Link
JP (1) JPS5583917A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742251A (en) * 1980-08-26 1982-03-09 Mitsubishi Electric Corp Data transmission system
JPS57113660A (en) * 1980-12-29 1982-07-15 Fujitsu Ltd Common bus communication system
JPS5971527A (en) * 1982-01-15 1984-04-23 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Computer system
JPS59500841A (en) * 1982-05-07 1984-05-10 テレフオンアクチ−ボラゲツト　エル　エム　エリクソン digital communication system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742251A (en) * 1980-08-26 1982-03-09 Mitsubishi Electric Corp Data transmission system
JPS57113660A (en) * 1980-12-29 1982-07-15 Fujitsu Ltd Common bus communication system
JPS5971527A (en) * 1982-01-15 1984-04-23 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Computer system
JPS6126102B2 (en) * 1982-01-15 1986-06-19 Intaanashonaru Bijinesu Mashiinzu Corp
JPS59500841A (en) * 1982-05-07 1984-05-10 テレフオンアクチ−ボラゲツト　エル　エム　エリクソン digital communication system
JPH0432577B2 (en) * 1982-05-07 1992-05-29

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