SE391251B - SURVEILLANCE SYSTEM, WITH CONNECTION CONTROL, INCLUDING A CENTRAL UNIT CONNECTED VIA TELEPHONE NETWORK TO SEVERAL LOCAL TERMINAL UNITS - Google Patents

SURVEILLANCE SYSTEM, WITH CONNECTION CONTROL, INCLUDING A CENTRAL UNIT CONNECTED VIA TELEPHONE NETWORK TO SEVERAL LOCAL TERMINAL UNITS

Info

Publication number
SE391251B
SE391251B SE7600691A SE7600691A SE391251B SE 391251 B SE391251 B SE 391251B SE 7600691 A SE7600691 A SE 7600691A SE 7600691 A SE7600691 A SE 7600691A SE 391251 B SE391251 B SE 391251B
Authority
SE
Sweden
Prior art keywords
connected via
telephone network
unit connected
central unit
connection control
Prior art date
Application number
SE7600691A
Other languages
Swedish (sv)
Other versions
SE7600691L (en
Inventor
A D Lindstrom
Original Assignee
Saab Scania Ab
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 Saab Scania Ab filed Critical Saab Scania Ab
Priority to SE7600691A priority Critical patent/SE391251B/en
Priority claimed from SE7414814A external-priority patent/SE391250B/en
Priority to NL7513768A priority patent/NL7513768A/en
Publication of SE7600691L publication Critical patent/SE7600691L/en
Publication of SE391251B publication Critical patent/SE391251B/en

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
SE7600691A 1974-11-26 1974-11-26 SURVEILLANCE SYSTEM, WITH CONNECTION CONTROL, INCLUDING A CENTRAL UNIT CONNECTED VIA TELEPHONE NETWORK TO SEVERAL LOCAL TERMINAL UNITS SE391251B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE7600691A SE391251B (en) 1974-11-26 1974-11-26 SURVEILLANCE SYSTEM, WITH CONNECTION CONTROL, INCLUDING A CENTRAL UNIT CONNECTED VIA TELEPHONE NETWORK TO SEVERAL LOCAL TERMINAL UNITS
NL7513768A NL7513768A (en) 1974-11-26 1975-11-25 Centralised surveillance system - with peripheral stations connected via telecommunication link to central control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7600691A SE391251B (en) 1974-11-26 1974-11-26 SURVEILLANCE SYSTEM, WITH CONNECTION CONTROL, INCLUDING A CENTRAL UNIT CONNECTED VIA TELEPHONE NETWORK TO SEVERAL LOCAL TERMINAL UNITS
SE7414814A SE391250B (en) 1974-11-26 1974-11-26 SECURITY SYSTEM, INCLUDING A CENTRAL UNIT, SOMŸVIA A COMMUNICATION CHANNEL IS CONNECTED WITH SEVERAL LOCAL TERMINAL UNITS

Publications (2)

Publication Number Publication Date
SE7600691L SE7600691L (en) 1976-05-27
SE391251B true SE391251B (en) 1977-02-07

Family

ID=26656554

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7600691A SE391251B (en) 1974-11-26 1974-11-26 SURVEILLANCE SYSTEM, WITH CONNECTION CONTROL, INCLUDING A CENTRAL UNIT CONNECTED VIA TELEPHONE NETWORK TO SEVERAL LOCAL TERMINAL UNITS

Country Status (2)

Country Link
NL (1) NL7513768A (en)
SE (1) SE391251B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988008183A1 (en) * 1987-04-08 1988-10-20 Jan Lennart Johansson Security system comprising a signal transmitter
US6091327A (en) * 1995-05-15 2000-07-18 Telefonaktiebolaget Lm Ericsson System for surveillance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356335A1 (en) * 1976-06-25 1978-01-20 Labo Cent Telecommunicat Alarm monitor for telephone exchange - has cyclic detector and interrogator to address digital signals to alarm register

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988008183A1 (en) * 1987-04-08 1988-10-20 Jan Lennart Johansson Security system comprising a signal transmitter
US6091327A (en) * 1995-05-15 2000-07-18 Telefonaktiebolaget Lm Ericsson System for surveillance

Also Published As

Publication number Publication date
NL7513768A (en) 1976-05-31
SE7600691L (en) 1976-05-27

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