BE454825A - - Google Patents

Info

Publication number
BE454825A
BE454825A BE454825DA BE454825A BE 454825 A BE454825 A BE 454825A BE 454825D A BE454825D A BE 454825DA BE 454825 A BE454825 A BE 454825A
Authority
BE
Belgium
Application number
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.)
Publication of BE454825A publication Critical patent/BE454825A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/20Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • H04B1/44Transmit/receive switching
    • H04B1/46Transmit/receive switching by voice-frequency signals; by pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • H04B1/54Circuits using the same frequency for two directions of communication
    • H04B1/58Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
BE454825D 1943-03-15 BE454825A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL242259X 1943-03-15

Publications (1)

Publication Number Publication Date
BE454825A true BE454825A (en:Method)

Family

ID=19780631

Family Applications (1)

Application Number Title Priority Date Filing Date
BE454825D BE454825A (en:Method) 1943-03-15

Country Status (5)

Country Link
US (1) US2504008A (en:Method)
BE (1) BE454825A (en:Method)
CH (1) CH242259A (en:Method)
FR (1) FR902674A (en:Method)
GB (1) GB614729A (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766324A (en) * 1951-12-18 1956-10-09 Motorola Inc Switching system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1639773A (en) * 1927-08-23 Two-way telephone transmission
US1706472A (en) * 1926-04-23 1929-03-26 American Telephone & Telegraph Echo suppressor
US2258966A (en) * 1940-10-12 1941-10-14 Bell Telephone Labor Inc Control of transmission in two-way signaling systems

Also Published As

Publication number Publication date
FR902674A (fr) 1945-09-10
CH242259A (de) 1946-04-30
GB614729A (en) 1948-12-22
US2504008A (en) 1950-04-11

Similar Documents

Publication Publication Date Title
BE460282A (en:Method)
BE455650R (en:Method)
BE456604A (en:Method)
BE453765A (en:Method)
BE454764A (en:Method)
BE454709A (en:Method)
BE454450A (en:Method)
NL72026C (en:Method)
NL64785C (en:Method)
BE474796A (en:Method)
BE462565A (en:Method)
BE460091A (en:Method)
BE457558A (en:Method)
BE454405A (en:Method)
BE457498A (en:Method)
BE451189A (en:Method)
BE462836A (en:Method)
BE462299A (en:Method)
BE461165A (en:Method)
BE461061A (en:Method)
BE460949A (en:Method)
BE460041A (en:Method)
BE459586A (en:Method)
BE459044A (en:Method)
BE453380A (en:Method)