FR761604A - Enhancements to dual-channel telephone systems and the like - Google Patents

Enhancements to dual-channel telephone systems and the like

Info

Publication number
FR761604A
FR761604A FR761604DA FR761604A FR 761604 A FR761604 A FR 761604A FR 761604D A FR761604D A FR 761604DA FR 761604 A FR761604 A FR 761604A
Authority
FR
France
Prior art keywords
enhancements
dual
telephone systems
channel telephone
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
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of FR761604A publication Critical patent/FR761604A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Near-Field Transmission Systems (AREA)
  • Noise Elimination (AREA)
FR761604D 1932-09-03 1933-09-02 Enhancements to dual-channel telephone systems and the like Expired FR761604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24631/32A GB408300A (en) 1932-09-03 1932-09-03 Improvements in or relating to two-way telephone and like electrical systems

Publications (1)

Publication Number Publication Date
FR761604A true FR761604A (en) 1934-03-23

Family

ID=10214744

Family Applications (1)

Application Number Title Priority Date Filing Date
FR761604D Expired FR761604A (en) 1932-09-03 1933-09-02 Enhancements to dual-channel telephone systems and the like

Country Status (5)

Country Link
US (1) US1992833A (en)
DE (1) DE623827C (en)
FR (1) FR761604A (en)
GB (2) GB408300A (en)
NL (1) NL37480C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511948A (en) * 1950-06-20 Hybrid circuit
NL80719C (en) * 1949-10-11
DE1062748B (en) * 1956-02-29 1959-08-06 Siemens Ag Device to avoid undesired feedback in transmission systems

Also Published As

Publication number Publication date
DE623827C (en)
GB408329A (en) 1934-04-03
NL37480C (en)
US1992833A (en) 1935-02-26
GB408300A (en) 1934-04-03

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