JPS6477247A - Loop transmission system - Google Patents

Loop transmission system

Info

Publication number
JPS6477247A
JPS6477247A JP12715188A JP12715188A JPS6477247A JP S6477247 A JPS6477247 A JP S6477247A JP 12715188 A JP12715188 A JP 12715188A JP 12715188 A JP12715188 A JP 12715188A JP S6477247 A JPS6477247 A JP S6477247A
Authority
JP
Japan
Prior art keywords
transmission
frame
loop
reception
field
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
JP12715188A
Other languages
Japanese (ja)
Other versions
JPH0424900B2 (en
Inventor
Masahiko Kida
Toyokazu Hashimoto
Hisashi Matsumura
Hiroyuki Wada
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 JP12715188A priority Critical patent/JPS6477247A/en
Publication of JPS6477247A publication Critical patent/JPS6477247A/en
Publication of JPH0424900B2 publication Critical patent/JPH0424900B2/ja
Granted legal-status Critical Current

Links

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  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To confirm the response to a transmission frame within the time when the frame is once circulated in a loop, by providing the transmission frame with a loop answer field. CONSTITUTION:Stations(ST) are connected on a loop transmission line 1, and data transmitted from one ST passes the other STs in the direction of an arrow and is returned to the transmission source ST. In this constitution, the transmission frame shown in the figure is transmitted from the transmission ST and is received by the reception ST. When the frame is transmitted from the transmission ST, the LA (loop answer) field is set to pattern (12)16 of a term 1 in the figure. The reception ST rewrites contents of the LA field in accordance with individual phenomena by which it is judged that this frame reaches the reception ST.
JP12715188A 1988-05-26 1988-05-26 Loop transmission system Granted JPS6477247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12715188A JPS6477247A (en) 1988-05-26 1988-05-26 Loop transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12715188A JPS6477247A (en) 1988-05-26 1988-05-26 Loop transmission system

Publications (2)

Publication Number Publication Date
JPS6477247A true JPS6477247A (en) 1989-03-23
JPH0424900B2 JPH0424900B2 (en) 1992-04-28

Family

ID=14952885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12715188A Granted JPS6477247A (en) 1988-05-26 1988-05-26 Loop transmission system

Country Status (1)

Country Link
JP (1) JPS6477247A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173304A (en) * 1974-12-21 1976-06-25 Hitachi Ltd
JPS5199423A (en) * 1975-02-28 1976-09-02 Oki Electric Ind Co Ltd
JPS5275905A (en) * 1975-12-22 1977-06-25 Fujitsu Ltd Information signal transmission system for bucket communication
JPS5482102A (en) * 1977-12-14 1979-06-30 Fujitsu Ltd Data communication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173304A (en) * 1974-12-21 1976-06-25 Hitachi Ltd
JPS5199423A (en) * 1975-02-28 1976-09-02 Oki Electric Ind Co Ltd
JPS5275905A (en) * 1975-12-22 1977-06-25 Fujitsu Ltd Information signal transmission system for bucket communication
JPS5482102A (en) * 1977-12-14 1979-06-30 Fujitsu Ltd Data communication system

Also Published As

Publication number Publication date
JPH0424900B2 (en) 1992-04-28

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