FR2373200B1 - - Google Patents
Info
- Publication number
- FR2373200B1 FR2373200B1 FR7736279A FR7736279A FR2373200B1 FR 2373200 B1 FR2373200 B1 FR 2373200B1 FR 7736279 A FR7736279 A FR 7736279A FR 7736279 A FR7736279 A FR 7736279A FR 2373200 B1 FR2373200 B1 FR 2373200B1
- Authority
- FR
- France
- 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
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)
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 |
|---|---|
| FR2373200A1 FR2373200A1 (fr) | 1978-06-30 |
| FR2373200B1 true FR2373200B1 (en:Method) | 1982-05-21 |
Family
ID=26328748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7736279A Granted FR2373200A1 (fr) | 1976-12-03 | 1977-12-02 | Circuit destine a recevoir et a emettre des signaux dans un appareil telephonique d'abonne |
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)
| 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)
| 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 |
-
1977
- 1977-11-16 GB GB47725/77A patent/GB1546046A/en not_active Expired
- 1977-11-29 DE DE2753130A patent/DE2753130C3/de not_active Expired
- 1977-11-29 BR BR7707915A patent/BR7707915A/pt unknown
- 1977-12-01 US US05/856,676 patent/US4146753A/en not_active Expired - Lifetime
- 1977-12-02 FR FR7736279A patent/FR2373200A1/fr active Granted
- 1977-12-02 NL NLAANVRAGE7713405,A patent/NL187662C/xx not_active IP Right Cessation
- 1977-12-02 SE SE7713702A patent/SE440303B/xx not_active IP Right Cessation
- 1977-12-03 JP JP52145623A patent/JPS5816782B2/ja not_active Expired
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 |
| JPS5816782B2 (ja) | 1983-04-02 |
| NL187662C (nl) | 1991-12-02 |
| NL7713405A (nl) | 1978-06-06 |