JPS56107660A - Data transfer system - Google Patents

Data transfer system

Info

Publication number
JPS56107660A
JPS56107660A JP13263479A JP13263479A JPS56107660A JP S56107660 A JPS56107660 A JP S56107660A JP 13263479 A JP13263479 A JP 13263479A JP 13263479 A JP13263479 A JP 13263479A JP S56107660 A JPS56107660 A JP S56107660A
Authority
JP
Japan
Prior art keywords
slot
transmission
channel
unused
transfer
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
JP13263479A
Other languages
Japanese (ja)
Inventor
Tachiki Ichihashi
Takane Kakuno
Mitsuhiro Ishizaka
Shigeo Nakatsuka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13263479A priority Critical patent/JPS56107660A/en
Publication of JPS56107660A publication Critical patent/JPS56107660A/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

Landscapes

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

Abstract

PURPOSE:To improve the transmission efficiency by providing a bit showing whether the slot is being used or not, on the head of said slot, so that the transmission eqiupment which has detected that the bit is unused can transfer a data by use of this slot. CONSTITUTION:When the transmission equipment 54 is made to start the transmission by the information processing equipment 55, the channel discrimination part 44 detects an unused channel, the channel number is stored, immediately the transmission operation is started, the command generation part 48 is started, the transfer start command CM and the transmission data length LN are generated, and they are placed on the unused slot which is passing through the shift register 41, and are transmitted. Said channel is occupied by setting the bit showing that the slot is being used, to the slot header SH. Also, it is released by resetting the bit showing that the slot is being used, of the header SH, returning the channel to the unused state, and also erasing the contents of the transmission channel memory part 47. Accordingly, the transmission efficiency can be improved in case when the transfer data length is long, or the data field length in the slot is short.
JP13263479A 1979-10-15 1979-10-15 Data transfer system Pending JPS56107660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13263479A JPS56107660A (en) 1979-10-15 1979-10-15 Data transfer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13263479A JPS56107660A (en) 1979-10-15 1979-10-15 Data transfer system

Publications (1)

Publication Number Publication Date
JPS56107660A true JPS56107660A (en) 1981-08-26

Family

ID=15085907

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13263479A Pending JPS56107660A (en) 1979-10-15 1979-10-15 Data transfer system

Country Status (1)

Country Link
JP (1) JPS56107660A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5974745A (en) * 1982-10-21 1984-04-27 Hitachi Ltd Unified transmission control method of loop communication system
JPS62501020A (en) * 1984-12-12 1987-04-23 バ−ドウエル，ジエイ．シ−． mud pump
JPS6369346A (en) * 1986-09-11 1988-03-29 Fujitsu Ltd Network management system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52106604A (en) * 1976-03-05 1977-09-07 Toshiba Corp Data communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52106604A (en) * 1976-03-05 1977-09-07 Toshiba Corp Data communication system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5974745A (en) * 1982-10-21 1984-04-27 Hitachi Ltd Unified transmission control method of loop communication system
JPS62501020A (en) * 1984-12-12 1987-04-23 バ−ドウエル，ジエイ．シ−． mud pump
JPS6369346A (en) * 1986-09-11 1988-03-29 Fujitsu Ltd Network management system

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