FI60474C - Moduleringsanordning foer bildande av ett telefoni-frekvensmultiplexsystem - Google Patents

Moduleringsanordning foer bildande av ett telefoni-frekvensmultiplexsystem Download PDF

Info

Publication number
FI60474C
FI60474C FI2419/74A FI241974A FI60474C FI 60474 C FI60474 C FI 60474C FI 2419/74 A FI2419/74 A FI 2419/74A FI 241974 A FI241974 A FI 241974A FI 60474 C FI60474 C FI 60474C
Authority
FI
Finland
Prior art keywords
frequency
modulation
channels
modulated
carrier
Prior art date
Application number
FI2419/74A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI241974A7 (it
FI60474B (fi
Inventor
Claude Boulanger
Original Assignee
Cit Alcatel
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
Priority claimed from FR7329880A external-priority patent/FR2241170A1/fr
Priority claimed from FR7420360A external-priority patent/FR2275079A2/fr
Application filed by Cit Alcatel filed Critical Cit Alcatel
Publication of FI241974A7 publication Critical patent/FI241974A7/fi
Application granted granted Critical
Publication of FI60474B publication Critical patent/FI60474B/fi
Publication of FI60474C publication Critical patent/FI60474C/fi

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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Telephonic Communication Services (AREA)
FI2419/74A 1973-08-16 1974-08-15 Moduleringsanordning foer bildande av ett telefoni-frekvensmultiplexsystem FI60474C (fi)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7329880A FR2241170A1 (en) 1973-08-16 1973-08-16 Multiplexing telephonic channels - enables the construction of a frequency multiplex group of 12 channels
FR7329880 1973-08-16
FR7420360A FR2275079A2 (fr) 1974-06-12 1974-06-12 Multiplexeur pour voies telephoniques
FR7420360 1974-06-12

Publications (3)

Publication Number Publication Date
FI241974A7 FI241974A7 (it) 1975-02-17
FI60474B FI60474B (fi) 1981-09-30
FI60474C true FI60474C (fi) 1982-01-11

Family

ID=26217896

Family Applications (1)

Application Number Title Priority Date Filing Date
FI2419/74A FI60474C (fi) 1973-08-16 1974-08-15 Moduleringsanordning foer bildande av ett telefoni-frekvensmultiplexsystem

Country Status (10)

Country Link
US (1) US3969585A (it)
JP (1) JPS5051210A (it)
BE (1) BE818484A (it)
DE (1) DE2439135A1 (it)
DK (1) DK423074A (it)
FI (1) FI60474C (it)
GB (1) GB1468444A (it)
IT (1) IT1019772B (it)
NL (1) NL7410957A (it)
SE (1) SE400438B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145575A (en) * 1976-10-21 1979-03-20 Nippon Electric Co., Ltd. Frequency-division multiplexed signal transmission system
US4308614A (en) * 1978-10-26 1981-12-29 Fisher Charles B Noise-reduction sampling system
JPS5824060B2 (ja) * 1979-06-08 1983-05-19 日本電信電話株式会社 音声帯域多重伝送方式
FR2530394B1 (fr) * 1982-07-13 1986-05-16 Thomson Csf Dispositif de multiplexage et de demultiplexage de voies video
JPS62154920A (ja) * 1985-12-27 1987-07-09 Toshiba Corp 無線送信装置
US5005169A (en) * 1989-11-16 1991-04-02 Westinghouse Electric Corp. Frequency division multiplex guardband communication system for sending information over the guardbands

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274663C2 (de) * 1965-05-24 1980-09-18 Siemens Ag Aufbau der grundprimaergruppe eines einseitenband-traegerfrequenzsystems ueber eine vormodulationsstufe

Also Published As

Publication number Publication date
DE2439135A1 (de) 1975-02-27
US3969585A (en) 1976-07-13
FI241974A7 (it) 1975-02-17
JPS5051210A (it) 1975-05-08
IT1019772B (it) 1977-11-30
DK423074A (it) 1975-04-28
FI60474B (fi) 1981-09-30
SE7410411L (it) 1975-02-17
NL7410957A (nl) 1975-02-18
SE400438B (sv) 1978-03-20
GB1468444A (en) 1977-03-23
BE818484A (fr) 1975-02-05

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