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JPS5559537A - Network control system - Google Patents

Network control system

Info

Publication number
JPS5559537A
JPS5559537A JP13265778A JP13265778A JPS5559537A JP S5559537 A JPS5559537 A JP S5559537A JP 13265778 A JP13265778 A JP 13265778A JP 13265778 A JP13265778 A JP 13265778A JP S5559537 A JPS5559537 A JP S5559537A
Authority
JP
Japan
Prior art keywords
data
loop
circuit
ncp
transferred
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
JP13265778A
Other languages
Japanese (ja)
Other versions
JPS6159022B2 (en
Inventor
Minoru Hatada
Kunio Hiyama
Koichi Ihara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13265778A priority Critical patent/JPS5559537A/en
Publication of JPS5559537A publication Critical patent/JPS5559537A/en
Publication of JPS6159022B2 publication Critical patent/JPS6159022B2/ja
Granted legal-status Critical Current

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  • Small-Scale Networks (AREA)

Abstract

PURPOSE: To simplify the communication control by forming the network system with plural number of the single-way loop-type transmission line and then providing communication control exclusive processor NCP at each node and in correspondence to the loop.
CONSTITUTION: The network constitution is limited to the form which is formed by combining plural number of the single-way loop-type transmission line as shown in Fig. (a), and NCP is provided at each node in correspondence to the loop. At NCP1 the data given from the loop is stored in data memory R32 through reception circuit 31. The data is decided at distributor circuit 33 according to the destination address. And in the case of host computer HST, for example, the data is transferred to HST42 via compound circuit 38 and data exchange unit 40. In case the address is the adjacent loop, the data is transferred to NCP243 via compound circuit 39 and data exchange unit 41. On the other hand, the data from HST42 is stored in data memory S35 and then transmitted to loop bus bis transmission circuit 37 or transferred to NCP243 through transmission circuit 37 according to the destination address.
COPYRIGHT: (C)1980,JPO&Japio
JP13265778A 1978-10-30 1978-10-30 Network control system Granted JPS5559537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13265778A JPS5559537A (en) 1978-10-30 1978-10-30 Network control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13265778A JPS5559537A (en) 1978-10-30 1978-10-30 Network control system

Publications (2)

Publication Number Publication Date
JPS5559537A true JPS5559537A (en) 1980-05-06
JPS6159022B2 JPS6159022B2 (en) 1986-12-15

Family

ID=15086438

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13265778A Granted JPS5559537A (en) 1978-10-30 1978-10-30 Network control system

Country Status (1)

Country Link
JP (1) JPS5559537A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04265033A (en) * 1990-10-24 1992-09-21 American Teleph & Telegr Co <Att> Data communication network and control method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212503A (en) * 1975-07-21 1977-01-31 Nippon Syst Kogyo Kk Multiplex loop transmission system
JPS5375810A (en) * 1976-12-17 1978-07-05 Hitachi Ltd Communication system of several data higheays

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212503A (en) * 1975-07-21 1977-01-31 Nippon Syst Kogyo Kk Multiplex loop transmission system
JPS5375810A (en) * 1976-12-17 1978-07-05 Hitachi Ltd Communication system of several data higheays

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04265033A (en) * 1990-10-24 1992-09-21 American Teleph & Telegr Co <Att> Data communication network and control method thereof

Also Published As

Publication number Publication date
JPS6159022B2 (en) 1986-12-15

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