GB635481A - Transmission system using carrier currents - Google Patents

Transmission system using carrier currents

Info

Publication number
GB635481A
GB635481A GB1047846A GB1047846A GB635481A GB 635481 A GB635481 A GB 635481A GB 1047846 A GB1047846 A GB 1047846A GB 1047846 A GB1047846 A GB 1047846A GB 635481 A GB635481 A GB 635481A
Authority
GB
United Kingdom
Prior art keywords
signalling
carrier
modulator
transmission system
employed
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
GB1047846A
Other languages
English (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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Publication of GB635481A publication Critical patent/GB635481A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
GB1047846A 1943-03-08 1946-04-04 Transmission system using carrier currents Expired GB635481A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR895971T 1943-03-08
FR54361T 1943-12-04

Publications (1)

Publication Number Publication Date
GB635481A true GB635481A (en) 1950-04-12

Family

ID=32963915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1047846A Expired GB635481A (en) 1943-03-08 1946-04-04 Transmission system using carrier currents

Country Status (4)

Country Link
BE (1) BE460564A (xx)
CH (1) CH276933A (xx)
FR (1) FR54361E (xx)
GB (1) GB635481A (xx)

Also Published As

Publication number Publication date
FR54361E (fr) 1950-03-10
BE460564A (xx)
CH276933A (fr) 1951-07-31

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