GB721346A - Multichannel carrier telephone systems - Google Patents

Multichannel carrier telephone systems

Info

Publication number
GB721346A
GB721346A GB32232/52A GB3223252A GB721346A GB 721346 A GB721346 A GB 721346A GB 32232/52 A GB32232/52 A GB 32232/52A GB 3223252 A GB3223252 A GB 3223252A GB 721346 A GB721346 A GB 721346A
Authority
GB
United Kingdom
Prior art keywords
signal
band
amplifier
carrier
channel
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
GB32232/52A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB721346A publication Critical patent/GB721346A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/18—Frequency-division multiplex systems in which all the carriers are amplitude-modulated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H04J1/045—Filters applied to frequency transposition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/10—Intermediate station arrangements, e.g. for branching, for tapping-off

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radio Relay Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
GB32232/52A 1951-12-29 1952-12-19 Multichannel carrier telephone systems Expired GB721346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US264098A US2695927A (en) 1951-12-29 1951-12-29 Multichannel carrier telephone system

Publications (1)

Publication Number Publication Date
GB721346A true GB721346A (en) 1955-01-05

Family

ID=23004570

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32232/52A Expired GB721346A (en) 1951-12-29 1952-12-19 Multichannel carrier telephone systems

Country Status (6)

Country Link
US (1) US2695927A (en, 2012)
JP (1) JPS317853B1 (en, 2012)
CH (1) CH316565A (en, 2012)
DE (1) DE1021031B (en, 2012)
FR (1) FR1069115A (en, 2012)
GB (1) GB721346A (en, 2012)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450841A (en) * 1965-08-02 1969-06-17 Int Standard Electric Corp Carrier frequency stabilization for carrier frequency systems with suppressed carrier waves
US3478170A (en) * 1965-10-22 1969-11-11 Siemens Ag Modulation system for converting analogue signals to a pulse amplitude to pulse width to a binary output
CH427927A (de) * 1965-11-19 1967-01-15 Europ Handelsges Anst Verfahren zur Verstärkungsregelung beim Kurzwellenempfang

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1498568A (en) * 1920-07-09 1924-06-24 American Telephone & Telegraph Equalization of carrier transmissions
US1607682A (en) * 1924-03-22 1926-11-23 American Telephone & Telegraph Radio repeater system
DE706418C (de) * 1929-11-07 1941-05-26 Ericsson Telefon Ab L M Mehrfachtraegerfrequenzsystem
US2009438A (en) * 1931-07-31 1935-07-30 Bell Telephone Labor Inc Carrier wave transmission system
US2248757A (en) * 1939-06-07 1941-07-08 Rca Corp Compression-expansion system
CH217893A (de) * 1940-03-28 1941-11-15 Lorenz C Ag Zweifach-Trägerfrequenzanlage.
US2300415A (en) * 1941-04-26 1942-11-03 Bell Telephone Labor Inc Transmission control
FR987064A (fr) * 1949-03-28 1951-08-08 Cie Ind Des Telephones Perfectionnements aux dispositifs de réception pour systèmes de transmission à onde porteuse supprimée

Also Published As

Publication number Publication date
FR1069115A (fr) 1954-07-05
JPS317853B1 (en, 2012) 1956-09-11
US2695927A (en) 1954-11-30
CH316565A (de) 1956-10-15
DE1021031B (de) 1957-12-19

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