FR858181A - Electrical installation for carrier frequency devices - Google Patents

Electrical installation for carrier frequency devices

Info

Publication number
FR858181A
FR858181A FR858181DA FR858181A FR 858181 A FR858181 A FR 858181A FR 858181D A FR858181D A FR 858181DA FR 858181 A FR858181 A FR 858181A
Authority
FR
France
Prior art keywords
carrier frequency
electrical installation
frequency devices
devices
installation
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)
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 Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz 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 Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of FR858181A publication Critical patent/FR858181A/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
    • H04J1/04—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)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR858181D 1938-07-26 1939-07-22 Electrical installation for carrier frequency devices Expired FR858181A (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
FR858181A true FR858181A (en) 1940-11-19

Family

ID=5827296

Family Applications (1)

Application Number Title Priority Date Filing Date
FR858181D Expired FR858181A (en) 1938-07-26 1939-07-22 Electrical installation for carrier frequency devices

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
CH216072A (en) 1941-07-31
BE435593A (en) 1939-08-31
DE733974C (en) 1943-04-06
US2276132A (en) 1942-03-10

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