CA980889A - Loop communications system - Google Patents

Loop communications system

Info

Publication number
CA980889A
CA980889A CA158,253A CA158253A CA980889A CA 980889 A CA980889 A CA 980889A CA 158253 A CA158253 A CA 158253A CA 980889 A CA980889 A CA 980889A
Authority
CA
Canada
Prior art keywords
communications system
loop communications
loop
communications
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
CA158,253A
Other languages
English (en)
Other versions
CA158253S (en
Inventor
John B. Frisone
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
Application granted granted Critical
Publication of CA980889A publication Critical patent/CA980889A/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)
  • Time-Division Multiplex Systems (AREA)
  • Communication Control (AREA)
CA158,253A 1971-12-14 1972-12-05 Loop communications system Expired CA980889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20786471A 1971-12-14 1971-12-14

Publications (1)

Publication Number Publication Date
CA980889A true CA980889A (en) 1975-12-30

Family

ID=22772296

Family Applications (1)

Application Number Title Priority Date Filing Date
CA158,253A Expired CA980889A (en) 1971-12-14 1972-12-05 Loop communications system

Country Status (7)

Country Link
US (1) US3752932A (cs)
JP (1) JPS5232801B2 (cs)
CA (1) CA980889A (cs)
DE (1) DE2251705C3 (cs)
FR (1) FR2165424A5 (cs)
GB (1) GB1361353A (cs)
IT (1) IT971136B (cs)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2185194A6 (cs) * 1972-05-19 1973-12-28 Geophysique Cie Gle
US3832692A (en) * 1972-06-27 1974-08-27 Honeywell Inf Systems Priority network for devices coupled by a multi-line bus
FR2192752A5 (cs) * 1972-07-10 1974-02-08 Ibm France
GB1474288A (en) * 1973-08-14 1977-05-18 Siemens Ag Pcm tdm telecommunications system
US3932841A (en) * 1973-10-26 1976-01-13 Raytheon Company Bus controller for digital computer system
JPS50135910A (cs) * 1974-04-10 1975-10-28
US3996561A (en) * 1974-04-23 1976-12-07 Honeywell Information Systems, Inc. Priority determination apparatus for serially coupled peripheral interfaces in a data processing system
US4039757A (en) * 1975-01-16 1977-08-02 International Business Machines Corporation Digital data communication network and control system therefor
JPS51141506A (en) * 1975-05-31 1976-12-06 Nippon Telegr & Teleph Corp <Ntt> Multiplex data transmission system
SE393723B (sv) * 1975-09-18 1977-05-16 Philips Svenska Ab Sett att overfora data mellan en centralstation och ett antal terminalstationer via en sluten serieoverforingsslinga samt anleggning for utforande av settet
JPS5252316A (en) * 1975-10-24 1977-04-27 Matsushita Electric Ind Co Ltd Terminal connection unit in two-way catv system
US3979723A (en) * 1975-10-29 1976-09-07 International Business Machines Corporation Digital data communication network and control system therefor
CA1086397A (en) * 1976-09-14 1980-09-23 Charles G. Diefenderfer Polling an data communication system having a pulse position to binary address conversion circuit
US4231015A (en) * 1978-09-28 1980-10-28 General Atomic Company Multiple-processor digital communication system
US4241330A (en) * 1978-09-28 1980-12-23 General Atomic Company Multiple-processor digital communication system
US4558412A (en) * 1978-12-26 1985-12-10 Honeywell Information Systems Inc. Direct memory access revolving priority apparatus
JPS5951186B2 (ja) * 1979-10-19 1984-12-12 日本電信電話株式会社 制御装置
US4432088A (en) * 1981-04-30 1984-02-14 The United States Of America As Represented By The United States Department Of Energy Carrier sense data highway system
JPS59176101A (ja) * 1983-03-23 1984-10-05 Sanko Kinzoku Kk 車両用タイヤホイ−ルの構造
JPS601601U (ja) * 1983-06-20 1985-01-08 ヤンマー農機株式会社 田植機の車輪におけるスポ−ク構造
US4539677A (en) * 1983-07-28 1985-09-03 International Business Machines Corp. Multiple access data communication system
BE898499A (nl) * 1983-12-19 1984-04-16 Rombaut Willy Werkwijze en inrichting voor het elektronisch overbrengen van informatie.
JPS6212504U (cs) * 1985-03-05 1987-01-26
JPS6264601U (cs) * 1985-10-11 1987-04-22
JPS62189201U (cs) * 1986-05-23 1987-12-02
US4805170A (en) * 1987-04-29 1989-02-14 American Telephone And Telegraph Company, At&T Bell Laboratories Data communication network
JPS6441401U (cs) * 1987-09-08 1989-03-13
US4926313A (en) * 1988-09-19 1990-05-15 Unisys Corporation Bifurcated register priority system
US5032984A (en) * 1988-09-19 1991-07-16 Unisys Corporation Data bank priority system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544976A (en) * 1968-07-02 1970-12-01 Collins Radio Co Digitalized communication system with computation and control capabilities employing transmission line loop for data transmission
FR2044650B1 (cs) * 1969-05-16 1974-06-14 Ibm France
CA893337A (en) * 1969-11-10 1972-02-15 Ibm Canada Limited - Ibm Canada Limitee Data communication system
US3659271A (en) * 1970-10-16 1972-04-25 Collins Radio Co Multichannel communication system

Also Published As

Publication number Publication date
FR2165424A5 (cs) 1973-08-03
JPS5232801B2 (cs) 1977-08-24
US3752932A (en) 1973-08-14
DE2251705A1 (de) 1973-07-05
DE2251705B2 (de) 1974-05-22
GB1361353A (en) 1974-07-24
DE2251705C3 (de) 1975-01-02
JPS4866906A (cs) 1973-09-13
IT971136B (it) 1974-04-30

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