FR895971A - Improvements to power line transmission systems - Google Patents

Improvements to power line transmission systems

Info

Publication number
FR895971A
FR895971A FR895971DA FR895971A FR 895971 A FR895971 A FR 895971A FR 895971D A FR895971D A FR 895971DA FR 895971 A FR895971 A FR 895971A
Authority
FR
France
Prior art keywords
power line
transmission systems
line transmission
systems
power
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
Other languages
French (fr)
Inventor
Jean-Louis Hurault
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
Application granted granted Critical
Publication of FR895971A publication Critical patent/FR895971A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radio Relay Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FR895971D 1943-03-08 1943-03-08 Improvements to power line transmission systems Expired FR895971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR895971T 1943-03-08

Publications (1)

Publication Number Publication Date
FR895971A true FR895971A (en) 1945-02-08

Family

ID=32947442

Family Applications (1)

Application Number Title Priority Date Filing Date
FR895971D Expired FR895971A (en) 1943-03-08 1943-03-08 Improvements to power line transmission systems

Country Status (5)

Country Link
US (1) US2468555A (en)
BE (1) BE454346A (en)
CH (1) CH256130A (en)
DE (1) DE922775C (en)
FR (1) FR895971A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973493C (en) * 1950-09-28 1960-03-10 Philips Nv Single sideband carrier frequency telephone system
NL92529C (en) * 1952-04-09
NL104622C (en) * 1955-10-10

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL39470B (en) * 1927-01-04
US1748754A (en) * 1927-08-12 1930-02-25 Gen Electric Signaling system
US2117721A (en) * 1935-09-06 1938-05-17 Siemens Ag Telephone system
BE466622A (en) * 1943-01-14

Also Published As

Publication number Publication date
BE454346A (en)
CH256130A (en) 1948-07-31
DE922775C (en) 1955-01-24
US2468555A (en) 1949-04-26

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