GB1329890A - Telecommunications systems - Google Patents

Telecommunications systems

Info

Publication number
GB1329890A
GB1329890A GB4736571A GB4736571A GB1329890A GB 1329890 A GB1329890 A GB 1329890A GB 4736571 A GB4736571 A GB 4736571A GB 4736571 A GB4736571 A GB 4736571A GB 1329890 A GB1329890 A GB 1329890A
Authority
GB
United Kingdom
Prior art keywords
signal
outgoing
effected
filters
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
GB4736571A
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 Corp
Original Assignee
Siemens Corp
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 Corp filed Critical Siemens Corp
Publication of GB1329890A publication Critical patent/GB1329890A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—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)
  • Telephone Function (AREA)
GB4736571A 1970-11-03 1971-10-12 Telecommunications systems Expired GB1329890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702054073 DE2054073B2 (de) 1970-11-03 1970-11-03 Echosperre fuer einen sprechkreis auf einem vierdraht-uebertragungssystem

Publications (1)

Publication Number Publication Date
GB1329890A true GB1329890A (en) 1973-09-12

Family

ID=5787056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4736571A Expired GB1329890A (en) 1970-11-03 1971-10-12 Telecommunications systems

Country Status (8)

Country Link
US (1) US3826878A (cg-RX-API-DMAC10.html)
AU (1) AU461069B2 (cg-RX-API-DMAC10.html)
DE (1) DE2054073B2 (cg-RX-API-DMAC10.html)
ES (1) ES396611A1 (cg-RX-API-DMAC10.html)
FR (1) FR2112418B1 (cg-RX-API-DMAC10.html)
GB (1) GB1329890A (cg-RX-API-DMAC10.html)
IL (1) IL37987A (cg-RX-API-DMAC10.html)
NL (1) NL151598B (cg-RX-API-DMAC10.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028506A (en) * 1973-12-12 1977-06-07 Nippon Electric Company, Ltd. Maximum value tracing circuit for digitized voice signals
US3906172A (en) * 1974-04-22 1975-09-16 Gen Electric Digital echo suppressor
JPS6050092B2 (ja) * 1977-11-08 1985-11-06 ケイディディ株式会社 適応制御型反響阻止装置
US4215252A (en) * 1978-09-27 1980-07-29 Communications Satellite Corporation Video teleconference audio echo control unit
US6510224B1 (en) 1999-05-20 2003-01-21 Telefonaktiebolaget L M Ericsson Enhancement of near-end voice signals in an echo suppression system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH492357A (it) * 1966-12-24 1970-06-15 Consiglio Naz Delle Ricerche E Procedimento per migliorare la qualità della trasmissione di circuiti telefonici
US3560669A (en) * 1969-02-25 1971-02-02 Wescom Echo suppressor

Also Published As

Publication number Publication date
DE2054073B2 (de) 1972-09-28
AU461069B2 (en) 1975-05-15
FR2112418A1 (cg-RX-API-DMAC10.html) 1972-06-16
NL151598B (nl) 1976-11-15
DE2054073A1 (de) 1972-05-10
US3826878A (en) 1974-07-30
FR2112418B1 (cg-RX-API-DMAC10.html) 1976-10-29
IL37987A (en) 1974-05-16
NL7115076A (cg-RX-API-DMAC10.html) 1972-05-05
IL37987A0 (en) 1971-12-29
AU3491071A (en) 1973-05-03
ES396611A1 (es) 1974-12-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee