FR930594A - Improvements to transmission repeaters - Google Patents

Improvements to transmission repeaters

Info

Publication number
FR930594A
FR930594A FR930594DA FR930594A FR 930594 A FR930594 A FR 930594A FR 930594D A FR930594D A FR 930594DA FR 930594 A FR930594 A FR 930594A
Authority
FR
France
Prior art keywords
transmission repeaters
repeaters
transmission
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories 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 Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of FR930594A publication Critical patent/FR930594A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Amplifiers (AREA)
FR930594D 1939-08-14 1946-07-12 Improvements to transmission repeaters Expired FR930594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US290090A US2282405A (en) 1939-08-14 1939-08-14 Transmission system

Publications (1)

Publication Number Publication Date
FR930594A true FR930594A (en) 1948-01-29

Family

ID=23114493

Family Applications (1)

Application Number Title Priority Date Filing Date
FR930594D Expired FR930594A (en) 1939-08-14 1946-07-12 Improvements to transmission repeaters

Country Status (4)

Country Link
US (3) US2282405A (en)
BE (1) BE464853A (en)
FR (1) FR930594A (en)
GB (1) GB542252A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428520A (en) * 1943-05-01 1947-10-07 Automatic Elect Lab Transmission system
CH251257A (en) * 1943-11-03 1947-10-15 Autophon Ag Handset circuit in subscriber equipment of an intercom system.
US2477275A (en) * 1944-01-15 1949-07-26 Firm Autophon Ag Voice-controlled two-way communication system
US2487455A (en) * 1945-01-29 1949-11-08 Stromberg Carlson Co Telephone circuit
US2468553A (en) * 1945-03-17 1949-04-26 Automatic Elect Lab Voice operated control circuit
US2542921A (en) * 1945-07-02 1951-02-20 Automatic Elect Lab Signal operated control for twochannel transmission systems
US2515726A (en) * 1945-09-24 1950-07-18 Automatic Elect Lab Intercommunicating system
US2472211A (en) * 1945-12-13 1949-06-07 Automatic Elect Lab Antisinging gain controlled repeater
US2484691A (en) * 1946-02-14 1949-10-11 Western Electric Co Loud-speaking communication system
BE476344A (en) * 1946-06-20
US2497779A (en) * 1946-10-09 1950-02-14 Northern Electric Co Four-wire transmission circuit thermistor control
US2568397A (en) * 1947-02-20 1951-09-18 Rca Corp Telephone terminal equipment
NL69785C (en) * 1947-02-21
US2647172A (en) * 1948-06-11 1953-07-28 Le Teleampliphone Soc Electronic switch
GB703801A (en) * 1951-11-19 1954-02-10 Leonard Ernest Ryall Improvements in or relating to voice switching in telephone transmission systems
US3136864A (en) * 1959-10-05 1964-06-09 Automatic Elect Lab Loudspeaking telephone with electronic voice switching

Also Published As

Publication number Publication date
BE464853A (en)
US2371291A (en) 1945-03-13
USRE22897E (en) 1947-07-15
GB542252A (en) 1942-01-01
US2282405A (en) 1942-05-12

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