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GB1402987A - Interrogation of remote stations - Google Patents

Interrogation of remote stations

Info

Publication number
GB1402987A
GB1402987A GB378375A GB378375A GB1402987A GB 1402987 A GB1402987 A GB 1402987A GB 378375 A GB378375 A GB 378375A GB 378375 A GB378375 A GB 378375A GB 1402987 A GB1402987 A GB 1402987A
Authority
GB
United Kingdom
Prior art keywords
line
interrogation
interrogation signal
interrogator
remote stations
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
GB378375A
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.)
Elster Metering Ltd
Original Assignee
Kent Meters 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 Kent Meters Ltd filed Critical Kent Meters Ltd
Priority to GB378375A priority Critical patent/GB1402987A/en
Priority claimed from GB1463871A external-priority patent/GB1402986A/en
Publication of GB1402987A publication Critical patent/GB1402987A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/002—Telephonic communication systems specially adapted for combination with other electrical systems with telemetering systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

1402987 Selective signalling KENT METERS Ltd 4 May 1972 [13 May 1971] 3783/75 Divided out of 1402986 Heading G4H [Also in Division H4] Apparatus responsive to the receipt of an interrogation signal from an interrogator connected thereto by a line to incode information for sending back to the interrogator comprises a multi-stage receiver adapted to receive the element of an interrogation signal, a gating network connected to at least two stages of the receiver and arranged if the corresponding elements form a predetermined code to initiate encoding into a frequency modulated response signal both variable information currently available and fixed data (i.e. the station identity) for transmission over the line. The whole of the subject-matter is disclosed in the parent Specification 1,402,986.
GB378375A 1971-05-13 1971-05-13 Interrogation of remote stations Expired GB1402987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB378375A GB1402987A (en) 1971-05-13 1971-05-13 Interrogation of remote stations

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1463871A GB1402986A (en) 1971-05-13 1971-05-13 Interrogation of remote stations
GB378375A GB1402987A (en) 1971-05-13 1971-05-13 Interrogation of remote stations

Publications (1)

Publication Number Publication Date
GB1402987A true GB1402987A (en) 1975-08-13

Family

ID=26238588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB378375A Expired GB1402987A (en) 1971-05-13 1971-05-13 Interrogation of remote stations

Country Status (1)

Country Link
GB (1) GB1402987A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005842A1 (en) * 1978-06-01 1979-12-12 Universal Industrial Control Devices Ltd. High speed central office scanner
EP0019287A1 (en) * 1979-05-18 1980-11-26 Tocom, Inc. Data communications system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005842A1 (en) * 1978-06-01 1979-12-12 Universal Industrial Control Devices Ltd. High speed central office scanner
EP0019287A1 (en) * 1979-05-18 1980-11-26 Tocom, Inc. Data communications system

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Legal Events

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