JPS5482102A - Data communication system - Google Patents

Data communication system

Info

Publication number
JPS5482102A
JPS5482102A JP15015777A JP15015777A JPS5482102A JP S5482102 A JPS5482102 A JP S5482102A JP 15015777 A JP15015777 A JP 15015777A JP 15015777 A JP15015777 A JP 15015777A JP S5482102 A JPS5482102 A JP S5482102A
Authority
JP
Japan
Prior art keywords
packet
reception
transmission
station
answer
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
JP15015777A
Other languages
Japanese (ja)
Inventor
Yoriaki Inoue
Akimasa Yatsuhoshi
Yoshihiro Nakamura
Shigeo Shiratori
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 JP15015777A priority Critical patent/JPS5482102A/en
Publication of JPS5482102A publication Critical patent/JPS5482102A/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 reduce the packet transmission interval and thus to increase the data transmission velocity for the private communication of circular type by answering the adaptability for the packet reception to the transmission station from the reception station according to the state of the local buffer. CONSTITUTION:The signals extracted through circuit 10 in the reception station is supplied to reception side channel part 17 via common part 13. A collation is given between the address of corresponding communication subsystem 19 and the address in the reception packet. When a coincidence is obtained through the above collation, the answer of the packet acceptance is transmitted to the answer part of the packet through reception side indication part 14 in case the data reception buffer is not busy in system 19. Otherwise the incapability of the packet acceptance is replied if the buffer is busy. Each answer is transmitted to the transmission line from indication part 14 via common part 15, transmission side indication part 16 and circuit 12 respectively and then to be transmitted to the transmission station. Accordingly, the packet transmission interval of the transmission station becomes identical to a circulation time of the transmission line loop, thus reducing the time equivalent to one packet.
JP15015777A 1977-12-14 1977-12-14 Data communication system Pending JPS5482102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15015777A JPS5482102A (en) 1977-12-14 1977-12-14 Data communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15015777A JPS5482102A (en) 1977-12-14 1977-12-14 Data communication system

Publications (1)

Publication Number Publication Date
JPS5482102A true JPS5482102A (en) 1979-06-30

Family

ID=15490740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15015777A Pending JPS5482102A (en) 1977-12-14 1977-12-14 Data communication system

Country Status (1)

Country Link
JP (1) JPS5482102A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56147542A (en) * 1980-04-17 1981-11-16 Mitsubishi Electric Corp Remote process input and output controller for computer
JPS57101450A (en) * 1980-12-17 1982-06-24 Hitachi Ltd Loop transmission system
JPS57176861A (en) * 1981-04-24 1982-10-30 Hitachi Ltd Terminal equipment
JPS5887943A (en) * 1981-11-20 1983-05-25 Hitachi Ltd Loop transmission controlling system
JPS58114642A (en) * 1981-12-28 1983-07-08 Kokusai Denshin Denwa Co Ltd <Kdd> Data transfer controlling system for loop-shaped common bus
JPS61123341A (en) * 1984-11-20 1986-06-11 Nec Corp Time divisional relay exchange system
JPS6477247A (en) * 1988-05-26 1989-03-23 Hitachi Ltd Loop transmission system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120903A (en) * 1974-03-11 1975-09-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120903A (en) * 1974-03-11 1975-09-22

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56147542A (en) * 1980-04-17 1981-11-16 Mitsubishi Electric Corp Remote process input and output controller for computer
JPS57101450A (en) * 1980-12-17 1982-06-24 Hitachi Ltd Loop transmission system
JPS57176861A (en) * 1981-04-24 1982-10-30 Hitachi Ltd Terminal equipment
JPH0217978B2 (en) * 1981-04-24 1990-04-24 Hitachi Ltd
JPS5887943A (en) * 1981-11-20 1983-05-25 Hitachi Ltd Loop transmission controlling system
JPS58114642A (en) * 1981-12-28 1983-07-08 Kokusai Denshin Denwa Co Ltd <Kdd> Data transfer controlling system for loop-shaped common bus
JPS61123341A (en) * 1984-11-20 1986-06-11 Nec Corp Time divisional relay exchange system
JPS6477247A (en) * 1988-05-26 1989-03-23 Hitachi Ltd Loop transmission system
JPH0424900B2 (en) * 1988-05-26 1992-04-28 Hitachi Ltd

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