GB2006491A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
GB2006491A
GB2006491A GB7829501A GB7829501A GB2006491A GB 2006491 A GB2006491 A GB 2006491A GB 7829501 A GB7829501 A GB 7829501A GB 7829501 A GB7829501 A GB 7829501A GB 2006491 A GB2006491 A GB 2006491A
Authority
GB
United Kingdom
Prior art keywords
transmitters
channel
line
transmitter
transmission
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.)
Granted
Application number
GB7829501A
Other versions
GB2006491B (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.)
ML Engineering Plymouth Ltd
Original Assignee
ML Engineering Plymouth 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 ML Engineering Plymouth Ltd filed Critical ML Engineering Plymouth Ltd
Priority to GB7829501A priority Critical patent/GB2006491B/en
Publication of GB2006491A publication Critical patent/GB2006491A/en
Application granted granted Critical
Publication of GB2006491B publication Critical patent/GB2006491B/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]
    • H04L12/40—Bus networks
    • H04L12/407—Bus networks with decentralised control
    • H04L12/417—Bus networks with decentralised control with deterministic access, e.g. token passing

Landscapes

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

Abstract

A system for the transmission of data from a number of out-station transmitters to a central receiver over a communication line or channel in which each out-station transmitter has an associated timer and a detector which "listens" to the line or channel and enables the transmitter only in the absence of detected signals from the other transmitters on the line or channel. When enabled each transmitter transmits data over the line or channel under control of its associated timer for a time interval during which the other transmitters are inhibited. The time intervals commence from the start times which differ from each other by different random delays which are short compared with the timed intervals, so that upon initial switching on of the system one of the transmitters will always commence transmission, followed by all the other transmitters in sequence. <IMAGE>
GB7829501A 1977-07-02 1978-07-11 Data transmission system Expired GB2006491B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7829501A GB2006491B (en) 1977-07-02 1978-07-11 Data transmission system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2778477 1977-07-02
GB7829501A GB2006491B (en) 1977-07-02 1978-07-11 Data transmission system

Publications (2)

Publication Number Publication Date
GB2006491A true GB2006491A (en) 1979-05-02
GB2006491B GB2006491B (en) 1982-01-06

Family

ID=26259000

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7829501A Expired GB2006491B (en) 1977-07-02 1978-07-11 Data transmission system

Country Status (1)

Country Link
GB (1) GB2006491B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001025A1 (en) * 1978-11-06 1980-05-15 Boeing Co Autonomous terminal data communication system
FR2476352A1 (en) * 1979-10-30 1981-08-21 Pitney Bowes Inc ELECTRONIC POSTAGE MACHINE COMPRISING SEVERAL CALCULATION DEVICES
EP0052956A1 (en) * 1980-11-26 1982-06-02 Westinghouse Electric Corporation A bus access circuit for high speed digital data communication
EP0064818A1 (en) * 1981-04-20 1982-11-17 Pitney Bowes, Inc. Data collision avoidance method
EP0070828A1 (en) * 1981-02-11 1983-02-09 Boeing Co Improved autonomous terminal data communications system.
WO1983001359A1 (en) * 1981-10-01 1983-04-14 Burroughs Corp A local area contention network data communication system
EP0088906A1 (en) * 1982-03-11 1983-09-21 International Business Machines Corporation Apparatus for providing transmitter hierarchy control for efficient use of a common channel by a plurality of users
WO1983003507A1 (en) * 1982-03-29 1983-10-13 Ncr Co Data communication network and method of communication
US4471481A (en) * 1981-02-11 1984-09-11 The Boeing Company Autonomous terminal data communications system
EP0123371A1 (en) * 1983-01-27 1984-10-31 BRITISH TELECOMMUNICATIONS public limited company Multi-processor system
US4525785A (en) * 1979-10-30 1985-06-25 Pitney Bowes Inc. Electronic postage meter having plural computing system
GB2196770A (en) * 1983-09-14 1988-05-05 Harris Corp Railroad communication
EP0322701A2 (en) * 1987-12-17 1989-07-05 Omron Tateisi Electronics Co. Data carrier identification system

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001025A1 (en) * 1978-11-06 1980-05-15 Boeing Co Autonomous terminal data communication system
EP0020636A1 (en) * 1978-11-06 1981-01-07 Boeing Co Autonomous terminal data communication system.
EP0020636A4 (en) * 1978-11-06 1981-03-13 Boeing Co Autonomous terminal data communication system.
FR2476352A1 (en) * 1979-10-30 1981-08-21 Pitney Bowes Inc ELECTRONIC POSTAGE MACHINE COMPRISING SEVERAL CALCULATION DEVICES
US4525785A (en) * 1979-10-30 1985-06-25 Pitney Bowes Inc. Electronic postage meter having plural computing system
EP0052956A1 (en) * 1980-11-26 1982-06-02 Westinghouse Electric Corporation A bus access circuit for high speed digital data communication
US4471481A (en) * 1981-02-11 1984-09-11 The Boeing Company Autonomous terminal data communications system
EP0070828A4 (en) * 1981-02-11 1983-06-17 Boeing Co Improved autonomous terminal data communications system.
EP0070828A1 (en) * 1981-02-11 1983-02-09 Boeing Co Improved autonomous terminal data communications system.
EP0064818A1 (en) * 1981-04-20 1982-11-17 Pitney Bowes, Inc. Data collision avoidance method
WO1983001359A1 (en) * 1981-10-01 1983-04-14 Burroughs Corp A local area contention network data communication system
EP0076880A1 (en) * 1981-10-01 1983-04-20 BURROUGHS CORPORATION (a Michigan corporation) A local area contention network data communication system
EP0088906A1 (en) * 1982-03-11 1983-09-21 International Business Machines Corporation Apparatus for providing transmitter hierarchy control for efficient use of a common channel by a plurality of users
WO1983003507A1 (en) * 1982-03-29 1983-10-13 Ncr Co Data communication network and method of communication
EP0123371A1 (en) * 1983-01-27 1984-10-31 BRITISH TELECOMMUNICATIONS public limited company Multi-processor system
GB2196770A (en) * 1983-09-14 1988-05-05 Harris Corp Railroad communication
EP0322701A2 (en) * 1987-12-17 1989-07-05 Omron Tateisi Electronics Co. Data carrier identification system
EP0322701A3 (en) * 1987-12-17 1991-02-20 Omron Tateisi Electronics Co. Data carrier identification system

Also Published As

Publication number Publication date
GB2006491B (en) 1982-01-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee