FR781186A - Perfectionnements aux installations de transmission et de réception de messages, signaux, etc., à l'aide de courants alternatifs - Google Patents

Perfectionnements aux installations de transmission et de réception de messages, signaux, etc., à l'aide de courants alternatifs

Info

Publication number
FR781186A
FR781186A FR781186DA FR781186A FR 781186 A FR781186 A FR 781186A FR 781186D A FR781186D A FR 781186DA FR 781186 A FR781186 A FR 781186A
Authority
FR
France
Prior art keywords
messages
signals
transmission
alternating currents
installations
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
English (en)
French (fr)
Inventor
Leonard Ernest Ryall
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.)
General Electric Company PLC
Original Assignee
General Electric Company PLC
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 General Electric Company PLC filed Critical General Electric Company PLC
Application granted granted Critical
Publication of FR781186A publication Critical patent/FR781186A/fr
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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Interface Circuits In Exchanges (AREA)
FR781186D 1933-11-14 1934-11-13 Perfectionnements aux installations de transmission et de réception de messages, signaux, etc., à l'aide de courants alternatifs Expired FR781186A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB202982X 1933-11-14

Publications (1)

Publication Number Publication Date
FR781186A true FR781186A (fr) 1935-05-10

Family

ID=10143647

Family Applications (1)

Application Number Title Priority Date Filing Date
FR781186D Expired FR781186A (fr) 1933-11-14 1934-11-13 Perfectionnements aux installations de transmission et de réception de messages, signaux, etc., à l'aide de courants alternatifs

Country Status (7)

Country Link
US (1) US2082357A (enrdf_load_stackoverflow)
BE (1) BE406242A (enrdf_load_stackoverflow)
CH (1) CH202982A (enrdf_load_stackoverflow)
DE (1) DE677043C (enrdf_load_stackoverflow)
FR (1) FR781186A (enrdf_load_stackoverflow)
GB (2) GB430567A (enrdf_load_stackoverflow)
NL (1) NL40266C (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE890062C (de) * 1936-10-14 1953-09-17 Siemens Ag Schaltungsanordnung zur Verhinderung der elektroakustischen Rueckkopplung, insbesondere in Lautfernsprechanlagen
DE882420C (de) * 1938-04-12 1953-07-09 Siemens Ag Schaltungsanordnung fuer Rueckkopplungssperren in Lautfernsprechanlagen
DE744088C (de) * 1938-05-10 1944-01-08 Siemens Ag Lautfernsprechanlage mit Rueckkopplungssperre
DE759529C (de) * 1940-04-26 1954-05-03 Hell Rudolf Dr Ing Rueckkopplungssperre
DE896058C (de) * 1941-02-21 1953-11-09 Electrical Fono Films Co As Dynamikregelschaltung mit einstellbarem Regelgrad
GB561405A (en) * 1942-11-14 1944-05-18 Automatic Telephone & Elect Improvements in or relating to telecommunication systems
US2696529A (en) * 1950-09-02 1954-12-07 Bell Telephone Labor Inc Voice-operated switching system

Also Published As

Publication number Publication date
CH202982A (de) 1939-02-15
DE677043C (de) 1939-06-17
GB430567A (en) 1935-06-14
BE406242A (enrdf_load_stackoverflow)
GB430158A (en) 1935-06-14
NL40266C (enrdf_load_stackoverflow)
US2082357A (en) 1937-06-01

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