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GB987292A - Electrical communication apparatus - Google Patents

Electrical communication apparatus

Info

Publication number
GB987292A
GB987292A GB2138762A GB2138762A GB987292A GB 987292 A GB987292 A GB 987292A GB 2138762 A GB2138762 A GB 2138762A GB 2138762 A GB2138762 A GB 2138762A GB 987292 A GB987292 A GB 987292A
Authority
GB
United Kingdom
Prior art keywords
mulcom
transmit
time
counters
june
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
GB2138762A
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
Priority claimed from US120385A external-priority patent/US3244804A/en
Priority claimed from US120771A external-priority patent/US3244805A/en
Priority claimed from US121081A external-priority patent/US3245038A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB987292A publication Critical patent/GB987292A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/22—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling
    • 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]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Communication Control (AREA)
  • Small-Scale Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

987,292. Selective signalling. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 4,1962 [June 29, 1961], No. 21387/62. Drawings to Specification. Heading G4H. The description is similar to that in Specification 987,293 which is referred to but the sequencing arrangements of the mulcoms (field stations), to which the claims relate, differ. As described each mulcom includes a first counter HO all of which are advanced one step each time a mulcom starts to transmit and each of which causes its associated mulcom to start to transmit when an associated count-individual to that mulcomis reached. Each mulcom also includes a second counter LO. These counters are all reset each time a mulcom starts to transmit, and commence counting clock-pulses every time a mulcom stops transmitting. Thus if any mulcom fails to start transmitting (due to a fault) the count in the LO counters will rise to a level higher than normal and this is used to cause the next mulcom in the sequence to start transmitting, thereby by-passing the faulty mulcom. Specification 987,291 also is referred to.
GB2138762A 1961-06-28 1962-06-04 Electrical communication apparatus Expired GB987292A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US120385A US3244804A (en) 1961-06-28 1961-06-28 Time delay controlled remote station transmission to central data collecting station
US120771A US3244805A (en) 1961-06-29 1961-06-29 Counter controlled remote station transmission to central data collecting station
US121081A US3245038A (en) 1961-06-30 1961-06-30 Central to remote communication system with address modification for the remote stations

Publications (1)

Publication Number Publication Date
GB987292A true GB987292A (en) 1965-03-24

Family

ID=27382467

Family Applications (3)

Application Number Title Priority Date Filing Date
GB2138762A Expired GB987292A (en) 1961-06-28 1962-06-04 Electrical communication apparatus
GB2138662A Expired GB987291A (en) 1961-06-28 1962-06-04 Electrical communication apparatus
GB2138862A Expired GB987293A (en) 1961-06-28 1962-06-04 Electrical communication apparatus

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB2138662A Expired GB987291A (en) 1961-06-28 1962-06-04 Electrical communication apparatus
GB2138862A Expired GB987293A (en) 1961-06-28 1962-06-04 Electrical communication apparatus

Country Status (4)

Country Link
DK (2) DK136088B (en)
GB (3) GB987292A (en)
NL (1) NL280254A (en)
SE (2) SE317097B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118339A (en) * 1982-04-07 1983-10-26 Motorola Israel Ltd Signal processing unit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO123200B (en) * 1967-11-23 1971-10-11 Svenska Handelsbanken
EP0091142A3 (en) * 1982-04-07 1984-03-28 Motorola Israel Limited Signal processing unit
US5117501A (en) * 1988-08-08 1992-05-26 General Electric Company Dynamic regrouping in a trunked radio communications system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118339A (en) * 1982-04-07 1983-10-26 Motorola Israel Ltd Signal processing unit

Also Published As

Publication number Publication date
DK136088C (en) 1978-01-09
DK124363B (en) 1972-10-09
DE1424718A1 (en) 1969-09-18
GB987293A (en) 1965-03-24
DE1424718B2 (en) 1972-12-07
SE316793B (en) 1969-11-03
DK136088B (en) 1977-08-08
SE317097B (en) 1969-11-10
NL280254A (en)
GB987291A (en) 1965-03-24

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