GB8922391D0 - Signalling system - Google Patents

Signalling system

Info

Publication number
GB8922391D0
GB8922391D0 GB898922391A GB8922391A GB8922391D0 GB 8922391 D0 GB8922391 D0 GB 8922391D0 GB 898922391 A GB898922391 A GB 898922391A GB 8922391 A GB8922391 A GB 8922391A GB 8922391 D0 GB8922391 D0 GB 8922391D0
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Withdrawn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
GB898922391A
Other versions
GB2237425A (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.)
ZERO OPTION ELECTRONICS Ltd
Original Assignee
ZERO OPTION ELECTRONICS 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 ZERO OPTION ELECTRONICS Ltd filed Critical ZERO OPTION ELECTRONICS Ltd
Priority to GB8922391A priority Critical patent/GB2237425A/en
Publication of GB8922391D0 publication Critical patent/GB8922391D0/en
Publication of GB2237425A publication Critical patent/GB2237425A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/14—Calling by using pulses
    • H04Q9/16—Calling by using pulses by predetermined number of pulses
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
    • G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor
GB8922391A 1989-10-04 1989-10-04 Surveillance system Withdrawn GB2237425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8922391A GB2237425A (en) 1989-10-04 1989-10-04 Surveillance system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8922391A GB2237425A (en) 1989-10-04 1989-10-04 Surveillance system

Publications (2)

Publication Number Publication Date
GB8922391D0 true GB8922391D0 (en) 1989-11-22
GB2237425A GB2237425A (en) 1991-05-01

Family

ID=10664058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8922391A Withdrawn GB2237425A (en) 1989-10-04 1989-10-04 Surveillance system

Country Status (1)

Country Link
GB (1) GB2237425A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1942070B8 (en) * 2000-03-30 2013-03-27 Mitsubishi Denki Kabushiki Kaisha Communications control system for elevators using synchronized communication in a master-slave network

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384874A (en) * 1963-03-04 1968-05-21 Itt Supervisory system having remote station selection by the number of pulses transmitted
AU537701B2 (en) * 1980-05-21 1984-07-05 American District Telegragh Co. Non-home run zoning system

Also Published As

Publication number Publication date
GB2237425A (en) 1991-05-01

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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)