GB280957A - - Google Patents

Info

Publication number
GB280957A
GB280957A GB31238/27A GB3123827A GB280957A GB 280957 A GB280957 A GB 280957A GB 31238/27 A GB31238/27 A GB 31238/27A GB 3123827 A GB3123827 A GB 3123827A GB 280957 A GB280957 A GB 280957A
Authority
GB
United Kingdom
Prior art keywords
amplifier
path
filter
control device
return path
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
GB31238/27A
Other languages
English (en)
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.)
Siemens and Halske AG
Original Assignee
Siemens and Halske 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 and Halske AG filed Critical Siemens and Halske AG
Publication of GB280957A publication Critical patent/GB280957A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • 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
    • H04B3/21—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a set of bandfilters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Burglar Alarm Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
GB31238/27A 1927-06-15 1927-11-21 Expired GB280957A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE292136X 1927-06-15

Publications (1)

Publication Number Publication Date
GB280957A true GB280957A (enrdf_load_stackoverflow) 1928-07-05

Family

ID=6071737

Family Applications (2)

Application Number Title Priority Date Filing Date
GB31238/27A Expired GB280957A (enrdf_load_stackoverflow) 1927-06-15 1927-11-21
GB34604/27A Expired GB292136A (en) 1927-06-15 1927-12-21 Improvements in or relating to transmission systems with amplifiers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB34604/27A Expired GB292136A (en) 1927-06-15 1927-12-21 Improvements in or relating to transmission systems with amplifiers

Country Status (4)

Country Link
AT (1) AT115966B (enrdf_load_stackoverflow)
DE (2) DE499995C (enrdf_load_stackoverflow)
FR (1) FR644152A (enrdf_load_stackoverflow)
GB (2) GB280957A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755404C (de) * 1936-07-08 1953-02-16 Siemens & Halske A G UEbertragungssystem mit Gabelechosperren
US3370294A (en) * 1964-05-13 1968-02-20 Leonard R. Kahn Communications echo suppression
DE1920962B1 (de) * 1969-04-24 1970-11-12 Siemens Ag Echosperre mit zwei aus parallel arbeitenden Bandpaessen bestehenden Filtersaetzen fuer einen Sprechkreis auf einem Vierdrahtuebertragungssystem
DE1921018B1 (de) * 1969-04-24 1971-01-14 Siemens Ag Echosperre fuer einen Sprechkreis auf einem Vierdrahtuebertragungssystem
DE1920959B1 (de) * 1969-04-24 1970-10-22 Siemens Ag Mit zwei wechselweise einschaltbaren Filtersätzen ausgestattete Echosperre für einen Sprechkreis auf einem Vierdrahtühertragungssystem
DE1920961B2 (de) * 1969-04-24 1970-10-22 Siemens Ag Selektive Echosperre fuer einen Sprechkreis auf einem Vierdrahtuebertragungssystem

Also Published As

Publication number Publication date
AT115966B (de) 1930-01-25
GB292136A (en) 1928-10-18
FR644152A (fr) 1928-10-03
DE501614C (de) 1930-07-05
DE499995C (de) 1930-06-18

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