CH216072A - Carrier frequency system with multiple modulation. - Google Patents

Carrier frequency system with multiple modulation.

Info

Publication number
CH216072A
CH216072A CH216072DA CH216072A CH 216072 A CH216072 A CH 216072A CH 216072D A CH216072D A CH 216072DA CH 216072 A CH216072 A CH 216072A
Authority
CH
Switzerland
Prior art keywords
carrier frequency
frequency system
multiple modulation
modulation
carrier
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft C Lorenz
Original Assignee
Lorenz C Ag
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 Lorenz C Ag filed Critical Lorenz C Ag
Publication of CH216072A publication Critical patent/CH216072A/en

Links

Classifications

    • 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
    • H04J1/08—Arrangements for combining channels
    • H04J1/085—Terminal station; Combined modulator and demodulator circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/78—Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
CH216072D 1938-07-26 1939-07-21 Carrier frequency system with multiple modulation. CH216072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL95240D DE733974C (en) 1938-07-26 1938-07-26 Carrier frequency transmission system with multi-stage modulation

Publications (1)

Publication Number Publication Date
CH216072A true CH216072A (en) 1941-07-31

Family

ID=5827296

Family Applications (1)

Application Number Title Priority Date Filing Date
CH216072D CH216072A (en) 1938-07-26 1939-07-21 Carrier frequency system with multiple modulation.

Country Status (5)

Country Link
US (1) US2276132A (en)
BE (1) BE435593A (en)
CH (1) CH216072A (en)
DE (1) DE733974C (en)
FR (1) FR858181A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL185193B (en) * 1953-02-18 Arnold L & C BED TABLE TOP FOR HOSPITAL NIGHT TABLES.
US4996709A (en) * 1988-05-12 1991-02-26 Tandy Corporation Intercom telephone

Also Published As

Publication number Publication date
FR858181A (en) 1940-11-19
US2276132A (en) 1942-03-10
DE733974C (en) 1943-04-06
BE435593A (en) 1939-08-31

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