JPS55123243A - Echo canceler - Google Patents

Echo canceler

Info

Publication number
JPS55123243A
JPS55123243A JP3135479A JP3135479A JPS55123243A JP S55123243 A JPS55123243 A JP S55123243A JP 3135479 A JP3135479 A JP 3135479A JP 3135479 A JP3135479 A JP 3135479A JP S55123243 A JPS55123243 A JP S55123243A
Authority
JP
Japan
Prior art keywords
echo
signal
mean value
transmitted
reception side
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.)
Granted
Application number
JP3135479A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6214144B2 (enExample
Inventor
Takashi Usami
Kensaku Fujii
Masaharu Terauchi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3135479A priority Critical patent/JPS55123243A/ja
Publication of JPS55123243A publication Critical patent/JPS55123243A/ja
Publication of JPS6214144B2 publication Critical patent/JPS6214144B2/ja
Granted 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)
  • Bidirectional Digital Transmission (AREA)
JP3135479A 1979-03-16 1979-03-16 Echo canceler Granted JPS55123243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3135479A JPS55123243A (en) 1979-03-16 1979-03-16 Echo canceler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3135479A JPS55123243A (en) 1979-03-16 1979-03-16 Echo canceler

Publications (2)

Publication Number Publication Date
JPS55123243A true JPS55123243A (en) 1980-09-22
JPS6214144B2 JPS6214144B2 (enExample) 1987-03-31

Family

ID=12328886

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3135479A Granted JPS55123243A (en) 1979-03-16 1979-03-16 Echo canceler

Country Status (1)

Country Link
JP (1) JPS55123243A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57183137A (en) * 1981-04-28 1982-11-11 Siemens Ag Digital communication system
JPS57203354A (en) * 1981-05-29 1982-12-13 Siemens Ag Digital communication system
US4608464A (en) * 1980-08-15 1986-08-26 Nippon Telegraph & Telephone Public Corporation Interface circuit interconnecting a bidirectional two-wire line with unidirectional four-wire lines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608464A (en) * 1980-08-15 1986-08-26 Nippon Telegraph & Telephone Public Corporation Interface circuit interconnecting a bidirectional two-wire line with unidirectional four-wire lines
JPS57183137A (en) * 1981-04-28 1982-11-11 Siemens Ag Digital communication system
JPS57203354A (en) * 1981-05-29 1982-12-13 Siemens Ag Digital communication system

Also Published As

Publication number Publication date
JPS6214144B2 (enExample) 1987-03-31

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