GB1244297A - A data communication system - Google Patents

A data communication system

Info

Publication number
GB1244297A
GB1244297A GB08879/70A GB1887970A GB1244297A GB 1244297 A GB1244297 A GB 1244297A GB 08879/70 A GB08879/70 A GB 08879/70A GB 1887970 A GB1887970 A GB 1887970A GB 1244297 A GB1244297 A GB 1244297A
Authority
GB
United Kingdom
Prior art keywords
character
central station
terminal
loop
data
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.)
Expired
Application number
GB08879/70A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1244297A publication Critical patent/GB1244297A/en
Expired 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
    • H04L12/423—Loop networks with centralised control, e.g. polling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)
  • Computer And Data Communications (AREA)
GB08879/70A 1969-05-16 1970-04-21 A data communication system Expired GB1244297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR696915337A FR2044650B1 (fi) 1969-05-16 1969-05-16

Publications (1)

Publication Number Publication Date
GB1244297A true GB1244297A (en) 1971-08-25

Family

ID=9033911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08879/70A Expired GB1244297A (en) 1969-05-16 1970-04-21 A data communication system

Country Status (9)

Country Link
US (1) US3633166A (fi)
JP (1) JPS5026243B1 (fi)
BE (1) BE749291A (fi)
DE (1) DE2022096C3 (fi)
FI (1) FI53519C (fi)
FR (1) FR2044650B1 (fi)
GB (1) GB1244297A (fi)
NO (1) NO133735C (fi)
SE (1) SE365629B (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162722A (en) * 1984-07-06 1986-02-05 Messerschmitt Boelkow Blohm Data transmission system

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706974A (en) * 1971-10-27 1972-12-19 Ibm Interface multiplexer
US3752932A (en) * 1971-12-14 1973-08-14 Ibm Loop communications system
FR2200708B1 (fi) * 1972-09-26 1976-05-07 Ibm
DE2333137C3 (de) * 1973-06-29 1982-11-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Zyklisches Abrufverfahren in einem Datenübertragungssystem
DE2438199C3 (de) * 1974-08-08 1979-11-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zum Betrieb eines digitalen Zeitmultiplex-Fernmeldenetzes
US4009469A (en) * 1975-12-19 1977-02-22 Ibm Corporation Loop communications system with method and apparatus for switch to secondary loop
US4213182A (en) * 1978-12-06 1980-07-15 General Electric Company Programmable energy load controller system and methods
US4511895A (en) * 1979-10-30 1985-04-16 General Electric Company Method and apparatus for controlling distributed electrical loads
JPS5947905B2 (ja) * 1980-02-08 1984-11-22 株式会社日立製作所 共通伝送路を用いた情報の伝送方法
JPS5745757A (en) * 1980-09-03 1982-03-15 Hitachi Ltd Ring type communication system of equal level
US4456790A (en) * 1982-02-08 1984-06-26 Bell Telephone Laboratories, Incorporated Automated hardware inventory system
US4498167A (en) * 1982-03-01 1985-02-05 International Telephone And Telegraph Corporation TDM Communication system
DE3328834A1 (de) * 1983-08-10 1985-02-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Datenuebertragungsssystem mit einer ringfoermigen uebertragungsleitung
US4554659A (en) * 1983-12-12 1985-11-19 At&T Bell Laboratories Data communication network
DK155265C (da) * 1986-06-09 1989-07-31 Rovsing As Christian Fremgangsmaade til indkobling af en datasendeenhed paa en signaleringsledning og apparat til udoevelse af fremgangsmaaden
US5117225A (en) * 1989-05-01 1992-05-26 Summit Micro Design Computer display screen monitoring system
IL96808A (en) * 1990-04-18 1996-03-31 Rambus Inc Introductory / Origin Circuit Agreed Using High-Performance Brokerage
US6751696B2 (en) 1990-04-18 2004-06-15 Rambus Inc. Memory device having a programmable register
US5113391A (en) * 1990-07-20 1992-05-12 Integrated Network Corporation Intelligent channel unit
JPH0779155A (ja) * 1993-09-06 1995-03-20 Mitsubishi Electric Corp 信号選択装置
EP0746804B1 (en) * 1994-02-23 2001-09-05 Rosemount Inc. Field transmitter for storing information
US6047063A (en) * 1996-01-23 2000-04-04 Antec Corporation Methods and apparatus for providing an auxiliary communication line
US6157970A (en) * 1997-09-24 2000-12-05 Intel Corporation Direct memory access system using time-multiplexing for transferring address, data, and control and a separate control line for serially transmitting encoded DMA channel number
US5991841A (en) * 1997-09-24 1999-11-23 Intel Corporation Memory transactions on a low pin count bus
US6119189A (en) * 1997-09-24 2000-09-12 Intel Corporation Bus master transactions on a low pin count bus
US6131127A (en) * 1997-09-24 2000-10-10 Intel Corporation I/O transactions on a low pin count bus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444520A (en) * 1965-07-06 1969-05-13 Mobil Oil Corp Control interface for computer controlled supervisory system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162722A (en) * 1984-07-06 1986-02-05 Messerschmitt Boelkow Blohm Data transmission system

Also Published As

Publication number Publication date
DE2022096A1 (de) 1970-11-19
BE749291A (fr) 1970-10-01
FI53519B (fi) 1978-01-31
DE2022096B2 (de) 1974-07-18
US3633166A (en) 1972-01-04
NO133735B (fi) 1976-03-08
DE2022096C3 (de) 1975-03-20
FR2044650B1 (fi) 1974-06-14
JPS5026243B1 (fi) 1975-08-29
FI53519C (fi) 1978-05-10
FR2044650A1 (fi) 1971-02-26
SE365629B (fi) 1974-03-25
NO133735C (fi) 1976-06-16

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