DK204179A - EKKOSPAERRE - Google Patents

EKKOSPAERRE

Info

Publication number
DK204179A
DK204179A DK204179A DK204179A DK204179A DK 204179 A DK204179 A DK 204179A DK 204179 A DK204179 A DK 204179A DK 204179 A DK204179 A DK 204179A DK 204179 A DK204179 A DK 204179A
Authority
DK
Denmark
Prior art keywords
path
tone
control circuit
control
transmitting path
Prior art date
Application number
DK204179A
Other languages
Danish (da)
Inventor
D Pfeil
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of DK204179A publication Critical patent/DK204179A/en

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)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Fats And Perfumes (AREA)
  • Lubricants (AREA)
  • Detergent Compositions (AREA)

Abstract

1. Echo suppressor comprising a comparator circuit (8) for the level-dependent control of the transmitting path and receiving path, and a control circuit which carries out the control, and a tone receiver (15, 17, 19) which is connected at the input end to the transmitting path and receiving path and at the output end to the control circuit, for blocking the control circuit, characterised in that the input of the tone receiver (15) is connected via a change-over switch (18), which is controlled in dependence upon the output of the comparator circuit (8), to the transmitting path when a tone voltage is present on the transmitting path and to the receiving path when a tone voltage is present on the receiving path.
DK204179A 1978-05-18 1979-05-17 EKKOSPAERRE DK204179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2821743A DE2821743C2 (en) 1978-05-18 1978-05-18 Echo lock

Publications (1)

Publication Number Publication Date
DK204179A true DK204179A (en) 1979-11-19

Family

ID=6039651

Family Applications (1)

Application Number Title Priority Date Filing Date
DK204179A DK204179A (en) 1978-05-18 1979-05-17 EKKOSPAERRE

Country Status (5)

Country Link
EP (1) EP0005759B1 (en)
AT (1) ATE34T1 (en)
AU (1) AU517093B2 (en)
DE (2) DE2821743C2 (en)
DK (1) DK204179A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3332006A1 (en) * 1983-09-05 1985-03-21 Hartmann & Braun Ag, 6000 Frankfurt Bidirectional regenerator for serial pulse sequences transmitted in blocks

Also Published As

Publication number Publication date
AU4717179A (en) 1979-11-22
EP0005759B1 (en) 1981-04-01
DE2960232D1 (en) 1981-04-23
DE2821743C2 (en) 1980-07-17
DE2821743B1 (en) 1979-11-08
ATE34T1 (en) 1981-04-15
AU517093B2 (en) 1981-07-09
EP0005759A1 (en) 1979-12-12

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