JPS5665548A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS5665548A
JPS5665548A JP14044379A JP14044379A JPS5665548A JP S5665548 A JPS5665548 A JP S5665548A JP 14044379 A JP14044379 A JP 14044379A JP 14044379 A JP14044379 A JP 14044379A JP S5665548 A JPS5665548 A JP S5665548A
Authority
JP
Japan
Prior art keywords
block
field
bits
line
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
JP14044379A
Other languages
Japanese (ja)
Inventor
Yoshio Hamaguchi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14044379A priority Critical patent/JPS5665548A/en
Publication of JPS5665548A publication Critical patent/JPS5665548A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To increase the usage efficiency of loop line and to reduce the transmission waiting time, by setting the block of a plurality of types of length according to the predetermined rules, in the system in which the block length of loop line of a block multiplex system is made variable. CONSTITUTION:A main device 2 and slave devices 3, 4, 5 are connected to a loop shape line 1. The main device and slave devices consist of the port shown in A and the main body shown in B. The constitution of block transmitted on the line 1 is that a synchronizing field 101 consisting of 8 bits, B, D, L, R fields 102-105 in one bit, S field 106 in 4 bits, and control field 107 in 8 bits are given and an information field 108 and an inspection field 109 in 16 bits follow after that. Further, the field identifying the block length of each block set with the specific rule is included at the predetermined location in the block.
JP14044379A 1979-11-01 1979-11-01 Data transmission system Pending JPS5665548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14044379A JPS5665548A (en) 1979-11-01 1979-11-01 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14044379A JPS5665548A (en) 1979-11-01 1979-11-01 Data transmission system

Publications (1)

Publication Number Publication Date
JPS5665548A true JPS5665548A (en) 1981-06-03

Family

ID=15268750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14044379A Pending JPS5665548A (en) 1979-11-01 1979-11-01 Data transmission system

Country Status (1)

Country Link
JP (1) JPS5665548A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5140005A (en) * 1974-10-02 1976-04-03 Hitachi Ltd RUUPUSHIKIDEETADENSOHOSHIKINIOKERU KAHENCHODEETADENSOHOSHIKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5140005A (en) * 1974-10-02 1976-04-03 Hitachi Ltd RUUPUSHIKIDEETADENSOHOSHIKINIOKERU KAHENCHODEETADENSOHOSHIKI

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