JPS5648741A - Bus control system - Google Patents

Bus control system

Info

Publication number
JPS5648741A
JPS5648741A JP12455179A JP12455179A JPS5648741A JP S5648741 A JPS5648741 A JP S5648741A JP 12455179 A JP12455179 A JP 12455179A JP 12455179 A JP12455179 A JP 12455179A JP S5648741 A JPS5648741 A JP S5648741A
Authority
JP
Japan
Prior art keywords
bus
transmission frame
frame length
data
buses
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
JP12455179A
Other languages
Japanese (ja)
Inventor
Tadashi 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.)
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 JP12455179A priority Critical patent/JPS5648741A/en
Publication of JPS5648741A publication Critical patent/JPS5648741A/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 shorten transfer time and to reduce the volume of information transmission by transferring data by selecting one of common buses, differing in transfer frame length, according to data length. CONSTITUTION:To (n) common buses #1-#n, (m) subsystems 5 are connected through corresponding bus interface parts 6. Bus interface part 6 selects one of common buses #1-#n to transmit and receive information to and from connected subsystems 5. Buses 4 differ in transmission frame length; #1 common bus 4 has the longest transmission frame length for long data, #2 bus 4 a shorter transmission frame length, and so on up to #n bus 4 the shortest transmission frame lengthe for the longest data. When one subsystem 5 is to transfer information to another subsystem 5, bus interface part 6 selects bus 4 having the best transmission frame length to manage with a small number of padding characters, so that the processing performance can be improved.
JP12455179A 1979-09-27 1979-09-27 Bus control system Pending JPS5648741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12455179A JPS5648741A (en) 1979-09-27 1979-09-27 Bus control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12455179A JPS5648741A (en) 1979-09-27 1979-09-27 Bus control system

Publications (1)

Publication Number Publication Date
JPS5648741A true JPS5648741A (en) 1981-05-02

Family

ID=14888272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12455179A Pending JPS5648741A (en) 1979-09-27 1979-09-27 Bus control system

Country Status (1)

Country Link
JP (1) JPS5648741A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845706A (en) * 1984-06-29 1989-07-04 Franaszek Peter A Switch configured network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845706A (en) * 1984-06-29 1989-07-04 Franaszek Peter A Switch configured network

Similar Documents

Publication Publication Date Title
ES8102439A1 (en) Data-transfer controlling system.
EP0097028A3 (en) Multiple-microcomputer communications system
JPS5648741A (en) Bus control system
JPS55154851A (en) Data transmission system
CH613061A5 (en) Computer apparatus including an omnibus line
JPS5647147A (en) Data transmission system
JPS5725030A (en) Intersubsystem communication system
JPS5595139A (en) Interruption system as to communication controller
JPS6462719A (en) Printer capable of connection to plural host computers
JPS6481426A (en) Star lan
JPS5336110A (en) Data transfer system
JPS5760434A (en) Data transfer controlling system
JPS54159804A (en) Multiple address data transfer unit
JPS55159651A (en) Communication control unit of 1 to n
JPS55153021A (en) Data transfer system of multiprocessor system
JPS55150032A (en) Data transfer system
JPS5627433A (en) Communication system between computer system
JPS5647146A (en) Data transmission system
JPS57206949A (en) Data processing device
JPS575141A (en) Bus control system
JPS5680724A (en) Dma control system of data processing system
JPS55162652A (en) Data transfer system using serial bus
JPS57212850A (en) Data transmitter
JPS57111725A (en) Data transmission control system
JPS5481004A (en) Data transfer system