FR2363247B1 - - Google Patents
Info
- Publication number
- FR2363247B1 FR2363247B1 FR767625577A FR7625577A FR2363247B1 FR 2363247 B1 FR2363247 B1 FR 2363247B1 FR 767625577 A FR767625577 A FR 767625577A FR 7625577 A FR7625577 A FR 7625577A FR 2363247 B1 FR2363247 B1 FR 2363247B1
- 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
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Bidirectional Digital Transmission (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7625577A FR2363247A1 (fr) | 1976-08-24 | 1976-08-24 | Equipement terminal pour un systeme multiplex telephonique a courants porteurs |
| GB32124/77A GB1534470A (en) | 1976-08-24 | 1977-08-01 | Terminal equipment for a multiplex carrier current telephone system |
| US05/821,218 US4130743A (en) | 1976-08-24 | 1977-08-02 | Terminal equipment for a multiplex carrier current telephone system |
| DE19772737082 DE2737082A1 (de) | 1976-08-24 | 1977-08-17 | Endeinrichtung fuer ein multiplextelefonsystem mit traegerstroemen |
| JP9830577A JPS5326608A (en) | 1976-08-24 | 1977-08-18 | Terminal station for carrier telephone multiplex system |
| NL7709172A NL7709172A (nl) | 1976-08-24 | 1977-08-18 | Terminaluitrusting voor een multiplex-telefoon- stelsel met draaggolven. |
| SE7709461A SE428622B (sv) | 1976-08-24 | 1977-08-23 | Avslutningsutrustning for ett berfrekvens-telefonsystem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7625577A FR2363247A1 (fr) | 1976-08-24 | 1976-08-24 | Equipement terminal pour un systeme multiplex telephonique a courants porteurs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2363247A1 FR2363247A1 (fr) | 1978-03-24 |
| FR2363247B1 true FR2363247B1 (fr) | 1981-03-06 |
Family
ID=9177096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7625577A Granted FR2363247A1 (fr) | 1976-08-24 | 1976-08-24 | Equipement terminal pour un systeme multiplex telephonique a courants porteurs |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4130743A (fr) |
| JP (1) | JPS5326608A (fr) |
| DE (1) | DE2737082A1 (fr) |
| FR (1) | FR2363247A1 (fr) |
| GB (1) | GB1534470A (fr) |
| NL (1) | NL7709172A (fr) |
| SE (1) | SE428622B (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644108A (en) * | 1982-10-27 | 1987-02-17 | International Business Machines Corporation | Adaptive sub-band echo suppressor |
| GB2139054B (en) * | 1983-04-22 | 1986-09-24 | Gen Electric Co Plc | Loudspeaking telephone instruments |
| US7113750B2 (en) * | 2002-12-16 | 2006-09-26 | Tektronix, Inc. | Apparatus and method for input channel isolation within an electronic test instrument |
| CN100442059C (zh) * | 2004-05-21 | 2008-12-10 | 特克特朗尼克公司 | 在电子测试仪器中用于将输入信道隔离的装置 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2251028A (en) * | 1940-09-28 | 1941-07-29 | Bell Telephone Labor Inc | Control of transmission in two-way signal wave transmission systems |
| US2258966A (en) * | 1940-10-12 | 1941-10-14 | Bell Telephone Labor Inc | Control of transmission in two-way signaling systems |
| US2295153A (en) * | 1941-06-10 | 1942-09-08 | Bell Telephone Labor Inc | Two-way signal transmission system |
| US3397401A (en) * | 1966-05-27 | 1968-08-13 | Hughes Aircraft Co | Voice operated communication system |
| US3896273A (en) * | 1971-01-08 | 1975-07-22 | Communications Satellite Corp | Digital echo suppressor |
| DE2457876C3 (de) * | 1973-12-10 | 1981-06-04 | Compagnie Industrielle des Télécommunications CIT-ALCATEL S.A., 75008 Paris | Echounterdrücker für ein Endgerät einer elektrischen Vierdrahtfernsprechleitung |
| US3942116A (en) * | 1975-03-13 | 1976-03-02 | California Microwave, Inc. | Transceiver having improved voice actuated carrier and echo suppression circuit |
-
1976
- 1976-08-24 FR FR7625577A patent/FR2363247A1/fr active Granted
-
1977
- 1977-08-01 GB GB32124/77A patent/GB1534470A/en not_active Expired
- 1977-08-02 US US05/821,218 patent/US4130743A/en not_active Expired - Lifetime
- 1977-08-17 DE DE19772737082 patent/DE2737082A1/de not_active Withdrawn
- 1977-08-18 NL NL7709172A patent/NL7709172A/xx not_active Application Discontinuation
- 1977-08-18 JP JP9830577A patent/JPS5326608A/ja active Pending
- 1977-08-23 SE SE7709461A patent/SE428622B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL7709172A (nl) | 1978-02-28 |
| GB1534470A (en) | 1978-12-06 |
| SE428622B (sv) | 1983-07-11 |
| SE7709461L (sv) | 1978-02-25 |
| DE2737082A1 (de) | 1978-03-09 |
| FR2363247A1 (fr) | 1978-03-24 |
| JPS5326608A (en) | 1978-03-11 |
| US4130743A (en) | 1978-12-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |