FR2112418B1 - - Google Patents
Info
- Publication number
- FR2112418B1 FR2112418B1 FR7138716A FR7138716A FR2112418B1 FR 2112418 B1 FR2112418 B1 FR 2112418B1 FR 7138716 A FR7138716 A FR 7138716A FR 7138716 A FR7138716 A FR 7138716A FR 2112418 B1 FR2112418 B1 FR 2112418B1
- 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
- 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)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Telephone Function (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702054073 DE2054073B2 (de) | 1970-11-03 | 1970-11-03 | Echosperre fuer einen sprechkreis auf einem vierdraht-uebertragungssystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2112418A1 FR2112418A1 (cg-RX-API-DMAC10.html) | 1972-06-16 |
| FR2112418B1 true FR2112418B1 (cg-RX-API-DMAC10.html) | 1976-10-29 |
Family
ID=5787056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7138716A Expired FR2112418B1 (cg-RX-API-DMAC10.html) | 1970-11-03 | 1971-10-28 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3826878A (cg-RX-API-DMAC10.html) |
| AU (1) | AU461069B2 (cg-RX-API-DMAC10.html) |
| DE (1) | DE2054073B2 (cg-RX-API-DMAC10.html) |
| ES (1) | ES396611A1 (cg-RX-API-DMAC10.html) |
| FR (1) | FR2112418B1 (cg-RX-API-DMAC10.html) |
| GB (1) | GB1329890A (cg-RX-API-DMAC10.html) |
| IL (1) | IL37987A (cg-RX-API-DMAC10.html) |
| NL (1) | NL151598B (cg-RX-API-DMAC10.html) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028506A (en) * | 1973-12-12 | 1977-06-07 | Nippon Electric Company, Ltd. | Maximum value tracing circuit for digitized voice signals |
| US3906172A (en) * | 1974-04-22 | 1975-09-16 | Gen Electric | Digital echo suppressor |
| JPS6050092B2 (ja) * | 1977-11-08 | 1985-11-06 | ケイディディ株式会社 | 適応制御型反響阻止装置 |
| US4215252A (en) * | 1978-09-27 | 1980-07-29 | Communications Satellite Corporation | Video teleconference audio echo control unit |
| US6510224B1 (en) | 1999-05-20 | 2003-01-21 | Telefonaktiebolaget L M Ericsson | Enhancement of near-end voice signals in an echo suppression system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH492357A (it) * | 1966-12-24 | 1970-06-15 | Consiglio Naz Delle Ricerche E | Procedimento per migliorare la qualità della trasmissione di circuiti telefonici |
| US3560669A (en) * | 1969-02-25 | 1971-02-02 | Wescom | Echo suppressor |
-
1970
- 1970-11-03 DE DE19702054073 patent/DE2054073B2/de active Granted
-
1971
- 1971-10-12 GB GB4736571A patent/GB1329890A/en not_active Expired
- 1971-10-20 US US00191011A patent/US3826878A/en not_active Expired - Lifetime
- 1971-10-22 AU AU34910/71A patent/AU461069B2/en not_active Expired
- 1971-10-22 IL IL37987A patent/IL37987A/xx unknown
- 1971-10-28 FR FR7138716A patent/FR2112418B1/fr not_active Expired
- 1971-11-02 NL NL717115076A patent/NL151598B/xx unknown
- 1971-11-03 ES ES396611A patent/ES396611A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2054073B2 (de) | 1972-09-28 |
| AU461069B2 (en) | 1975-05-15 |
| FR2112418A1 (cg-RX-API-DMAC10.html) | 1972-06-16 |
| NL151598B (nl) | 1976-11-15 |
| DE2054073A1 (de) | 1972-05-10 |
| US3826878A (en) | 1974-07-30 |
| IL37987A (en) | 1974-05-16 |
| NL7115076A (cg-RX-API-DMAC10.html) | 1972-05-05 |
| GB1329890A (en) | 1973-09-12 |
| IL37987A0 (en) | 1971-12-29 |
| AU3491071A (en) | 1973-05-03 |
| ES396611A1 (es) | 1974-12-01 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |