JPS5816782B2 - 電話器用送受信回路 - Google Patents

電話器用送受信回路

Info

Publication number
JPS5816782B2
JPS5816782B2 JP52145623A JP14562377A JPS5816782B2 JP S5816782 B2 JPS5816782 B2 JP S5816782B2 JP 52145623 A JP52145623 A JP 52145623A JP 14562377 A JP14562377 A JP 14562377A JP S5816782 B2 JPS5816782 B2 JP S5816782B2
Authority
JP
Japan
Prior art keywords
impedance
line
terminal
bridge
transmitting
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
JP52145623A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5391509A (en
Inventor
アントニオ・ネリ
セバスチアノ・ダリゴ
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.)
STMicroelectronics SRL
Original Assignee
SGS ATES Componenti Elettronici SpA
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
Priority claimed from IT3005076A external-priority patent/IT1065163B/it
Priority claimed from IT2786077A external-priority patent/IT1114420B/it
Application filed by SGS ATES Componenti Elettronici SpA filed Critical SGS ATES Componenti Elettronici SpA
Publication of JPS5391509A publication Critical patent/JPS5391509A/ja
Publication of JPS5816782B2 publication Critical patent/JPS5816782B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H04M1/585—Anti-side-tone circuits implemented without inductive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephone Function (AREA)
JP52145623A 1976-12-03 1977-12-03 電話器用送受信回路 Expired JPS5816782B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3005076A IT1065163B (it) 1976-12-03 1976-12-03 Circuito trasmittente e ricevente per apparecchio telefonico d'utente
IT2786077A IT1114420B (it) 1977-09-23 1977-09-23 Circuito trasmittente e ricevente per apparecchio telefonico d'utente con dispositivo elettronico di segnalazione

Publications (2)

Publication Number Publication Date
JPS5391509A JPS5391509A (en) 1978-08-11
JPS5816782B2 true JPS5816782B2 (ja) 1983-04-02

Family

ID=26328748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52145623A Expired JPS5816782B2 (ja) 1976-12-03 1977-12-03 電話器用送受信回路

Country Status (8)

Country Link
US (1) US4146753A (en:Method)
JP (1) JPS5816782B2 (en:Method)
BR (1) BR7707915A (en:Method)
DE (1) DE2753130C3 (en:Method)
FR (1) FR2373200A1 (en:Method)
GB (1) GB1546046A (en:Method)
NL (1) NL187662C (en:Method)
SE (1) SE440303B (en:Method)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332984A (en) * 1979-12-13 1982-06-01 Bell Telephone Laboratories, Incorporated Active speech network circuit for a telephone set
FR2478412A1 (fr) * 1980-03-14 1981-09-18 Radiotechnique Compelec Procede pour adapter automatiquement des circuits electroniques de postes telephoniques a la resistance de la ligne, et poste comportant des circuits auto-adaptes
JPS6041909B2 (ja) * 1980-03-26 1985-09-19 日本電気株式会社 電話機通話回路網
FR2538648A1 (fr) * 1982-12-28 1984-06-29 Thomson Csf Circuit de suppression de signal de microphone pour poste telephonique
GB8319786D0 (en) * 1983-07-22 1983-08-24 Plessey Co Plc Adaptive line hybrids
CA1240089A (en) * 1985-12-13 1988-08-02 Mitel Networks Corporation Circuit for maintaining hybrid cancellation of signals in a communication system
BE905921A (nl) * 1986-12-16 1987-06-16 Bell Telephone Mfg Telecommunicatie-inrichting en daarin gebruikte ketens.
US5282157A (en) * 1990-09-13 1994-01-25 Telecom Analysis Systems, Inc. Input impedance derived from a transfer network
JPH09167931A (ja) * 1995-12-15 1997-06-24 Brother Ind Ltd 通信装置の入出力回路

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546395A (en) * 1968-01-15 1970-12-08 Bell Telephone Labor Inc Active telephone set speech network employing transistor feedback loop for sidetone balance and equalization
DE1762804B2 (de) * 1968-08-29 1972-01-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur regelung der sende und empfangsbezugs daempfung einer teilnehmerstation einer fernsprechanlage
DE1919111B1 (de) * 1969-04-15 1970-10-29 Siemens Ag Schaltungsanordnung fuer einen Transistorhoerverstaerker mit Daempfungsausgleich in Fernsprechteilnehmerstellen
US3711660A (en) * 1969-12-04 1973-01-16 Univ Monash Hybrid networks
JPS495645B1 (en:Method) * 1970-02-07 1974-02-08
JPS5211166B1 (en:Method) * 1970-07-23 1977-03-29
JPS5148006B1 (en:Method) * 1970-09-03 1976-12-18
NL7115947A (en:Method) * 1971-11-19 1973-05-22
BE792329A (fr) * 1971-12-09 1973-06-06 Int Standard Electric Corp Circuit de transmission electronique pour poste telephonique
CH549914A (de) * 1972-03-10 1974-05-31 Zellweger Uster Ag Uebertragungseinrichtung mit einer gabelschaltung.
SE380699B (sv) * 1974-03-05 1975-11-10 Ericsson Telefon Ab L M Elektronisk talkrets for en centralbatterimatad telefonapparat.
US4031331A (en) * 1976-01-15 1977-06-21 Northern Electric Company Limited Telephone speech network
BE841105A (nl) * 1976-04-26 1976-10-26 Telekommunikatie toestel
US4071713A (en) * 1976-12-27 1978-01-31 Northern Telecom Limited Telephone speech network

Also Published As

Publication number Publication date
NL187662B (nl) 1991-07-01
GB1546046A (en) 1979-05-16
BR7707915A (pt) 1978-09-05
JPS5391509A (en) 1978-08-11
SE7713702L (sv) 1978-06-04
SE440303B (sv) 1985-07-22
DE2753130A1 (de) 1978-06-08
DE2753130B2 (de) 1979-11-29
DE2753130C3 (de) 1987-12-03
US4146753A (en) 1979-03-27
FR2373200A1 (fr) 1978-06-30
NL187662C (nl) 1991-12-02
FR2373200B1 (en:Method) 1982-05-21
NL7713405A (nl) 1978-06-06

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