JPS634742B2 - - Google Patents

Info

Publication number
JPS634742B2
JPS634742B2 JP14126681A JP14126681A JPS634742B2 JP S634742 B2 JPS634742 B2 JP S634742B2 JP 14126681 A JP14126681 A JP 14126681A JP 14126681 A JP14126681 A JP 14126681A JP S634742 B2 JPS634742 B2 JP S634742B2
Authority
JP
Japan
Prior art keywords
signal
level
received
circuit
value
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
JP14126681A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5842345A (ja
Inventor
Kazuhiko Yamamori
Tadamichi Kawasaki
Shigenobu Minami
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.)
Toshiba Corp
NTT Inc
Original Assignee
Toshiba Corp
Nippon Telegraph and Telephone 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 Toshiba Corp, Nippon Telegraph and Telephone Corp filed Critical Toshiba Corp
Priority to JP14126681A priority Critical patent/JPS5842345A/ja
Publication of JPS5842345A publication Critical patent/JPS5842345A/ja
Publication of JPS634742B2 publication Critical patent/JPS634742B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP14126681A 1981-09-08 1981-09-08 ハウリング防止装置 Granted JPS5842345A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14126681A JPS5842345A (ja) 1981-09-08 1981-09-08 ハウリング防止装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14126681A JPS5842345A (ja) 1981-09-08 1981-09-08 ハウリング防止装置

Publications (2)

Publication Number Publication Date
JPS5842345A JPS5842345A (ja) 1983-03-11
JPS634742B2 true JPS634742B2 (OSRAM) 1988-01-30

Family

ID=15287896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14126681A Granted JPS5842345A (ja) 1981-09-08 1981-09-08 ハウリング防止装置

Country Status (1)

Country Link
JP (1) JPS5842345A (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9729753B2 (en) 2013-12-25 2017-08-08 Sharp Kabushiki Kaisha Operation input system, electronic device and mobile terminal

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041849A (ja) * 1983-08-18 1985-03-05 Toshiba Corp 拡声電話
JPS62290253A (ja) * 1986-06-09 1987-12-17 Juki Corp 拡声電話装置
FR2612029B1 (fr) * 1987-03-03 1989-05-12 Connan Jean Louis Dispositif pour la realisation de la fonction " mains-libres " dans un poste telephonique, associant les fonctions de commutation de gain et d'annulation d'echo
JP2551536B2 (ja) * 1987-03-05 1996-11-06 マツダ株式会社 自動車電話装置
FR2841721B1 (fr) * 2002-06-28 2004-08-20 France Telecom Dispositif de traitement d'echo pour systeme de communication de type monovoie ou multivoies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9729753B2 (en) 2013-12-25 2017-08-08 Sharp Kabushiki Kaisha Operation input system, electronic device and mobile terminal

Also Published As

Publication number Publication date
JPS5842345A (ja) 1983-03-11

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