GB8924890D0 - Signalling system - Google Patents

Signalling system

Info

Publication number
GB8924890D0
GB8924890D0 GB898924890A GB8924890A GB8924890D0 GB 8924890 D0 GB8924890 D0 GB 8924890D0 GB 898924890 A GB898924890 A GB 898924890A GB 8924890 A GB8924890 A GB 8924890A GB 8924890 D0 GB8924890 D0 GB 8924890D0
Authority
GB
United Kingdom
Prior art keywords
signalling system
signalling
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.)
Withdrawn
Application number
GB898924890A
Other versions
GB2224872A (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.)
PROCESS COMPUTING Ltd
Original Assignee
PROCESS COMPUTING 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 PROCESS COMPUTING Ltd filed Critical PROCESS COMPUTING Ltd
Publication of GB8924890D0 publication Critical patent/GB8924890D0/en
Publication of GB2224872A publication Critical patent/GB2224872A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Warehouses Or Storage Devices (AREA)
GB8924890A 1988-11-04 1989-11-03 Signalling system Withdrawn GB2224872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888825907A GB8825907D0 (en) 1988-11-04 1988-11-04 Signalling system

Publications (2)

Publication Number Publication Date
GB8924890D0 true GB8924890D0 (en) 1989-12-20
GB2224872A GB2224872A (en) 1990-05-16

Family

ID=10646352

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888825907A Pending GB8825907D0 (en) 1988-11-04 1988-11-04 Signalling system
GB8924890A Withdrawn GB2224872A (en) 1988-11-04 1989-11-03 Signalling system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888825907A Pending GB8825907D0 (en) 1988-11-04 1988-11-04 Signalling system

Country Status (1)

Country Link
GB (2) GB8825907D0 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB436755A (en) * 1934-06-27 1935-10-17 Siemens Brothers & Co Ltd Improvements relating to electric fire and temperature alarm systems
US4015254A (en) * 1975-12-04 1977-03-29 General Motors Corporation Keyboard encoding circuit utilizing an A/D converter
DE3211550C2 (en) * 1982-03-29 1985-02-14 Siemens AG, 1000 Berlin und 8000 München DC alarm system
JPS58213330A (en) * 1982-06-07 1983-12-12 Victor Co Of Japan Ltd Key input discriminating device
EP0134853A1 (en) * 1983-09-14 1985-03-27 AMP INCORPORATED (a New Jersey corporation) Means for decoding a switch array

Also Published As

Publication number Publication date
GB8825907D0 (en) 1988-12-07
GB2224872A (en) 1990-05-16

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)