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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
BE454825D 1943-03-15 BE454825A (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE454825A true BE454825A (de)

Family

ID=19780631

Family Applications (1)

Application Number Title Priority Date Filing Date
BE454825D BE454825A (de) 1943-03-15

Country Status (5)

Country Link
US (1) US2504008A (de)
BE (1) BE454825A (de)
CH (1) CH242259A (de)
FR (1) FR902674A (de)
GB (1) GB614729A (de)

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

Similar Documents

Publication Publication Date Title
FR56443E (de)
FR882381A (de)
BE452648R (de)
BE450743R (de)
FR888368A (de)
FR887150A (de)
FR885999A (de)
DK68884C (de)
FR51595E (de)
FR884245A (de)
NL64785C (de)
BE455001A (de)
BE453950A (de)
BE453288A (de)
BE453263A (de)
BE449677A (de)
BE479160A (de)
BE456496A (de)
BE456646A (de)
BE454825A (de)
BE457168A (de)
BE457213A (de)
BE457265A (de)
NL72026C (de)
BE480791A (de)