GB1380945A - Multiplex echo canceller system - Google Patents

Multiplex echo canceller system

Info

Publication number
GB1380945A
GB1380945A GB3789172A GB3789172A GB1380945A GB 1380945 A GB1380945 A GB 1380945A GB 3789172 A GB3789172 A GB 3789172A GB 3789172 A GB3789172 A GB 3789172A GB 1380945 A GB1380945 A GB 1380945A
Authority
GB
United Kingdom
Prior art keywords
canceller
echo
adjustable
cancellers
self adaptive
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
GB3789172A
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.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Publication of GB1380945A publication Critical patent/GB1380945A/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
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB3789172A 1971-08-13 1972-08-14 Multiplex echo canceller system Expired GB1380945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6173571A JPS5631774B2 (https=) 1971-08-13 1971-08-13

Publications (1)

Publication Number Publication Date
GB1380945A true GB1380945A (en) 1975-01-22

Family

ID=13179738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3789172A Expired GB1380945A (en) 1971-08-13 1972-08-14 Multiplex echo canceller system

Country Status (6)

Country Link
JP (1) JPS5631774B2 (https=)
AU (1) AU465782B2 (https=)
CA (1) CA967690A (https=)
DE (1) DE2239770C2 (https=)
GB (1) GB1380945A (https=)
IT (1) IT963984B (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164529A (en) * 1984-09-12 1986-03-19 Plessey Co Plc Echo canceller

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6440700A (en) * 1987-08-07 1989-02-10 Akebono Res & Dev Centre Production of paper friction material
JPH04194100A (ja) * 1990-11-21 1992-07-14 Taisei:Kk パルプ材成型品の湿式成形法
DE60033358T2 (de) 1999-11-17 2007-10-31 Kao Corp. Verfahren zur Herstellung von faserigen Formteilen
JP2002009675A (ja) * 2000-06-26 2002-01-11 Nec Corp 多重化回線用エコー除去方法及び装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562448A (en) * 1968-06-21 1971-02-09 Bell Telephone Labor Inc Common control digital echo suppression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164529A (en) * 1984-09-12 1986-03-19 Plessey Co Plc Echo canceller

Also Published As

Publication number Publication date
DE2239770A1 (de) 1973-03-01
IT963984B (it) 1974-01-21
AU4552572A (en) 1974-02-14
CA967690A (en) 1975-05-13
DE2239770C2 (de) 1984-04-19
JPS4827604A (https=) 1973-04-12
AU465782B2 (en) 1975-10-09
JPS5631774B2 (https=) 1981-07-23

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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