JPS5631774B2 - - Google Patents
Info
- Publication number
- JPS5631774B2 JPS5631774B2 JP6173571A JP6173571A JPS5631774B2 JP S5631774 B2 JPS5631774 B2 JP S5631774B2 JP 6173571 A JP6173571 A JP 6173571A JP 6173571 A JP6173571 A JP 6173571A JP S5631774 B2 JPS5631774 B2 JP S5631774B2
- Authority
- JP
- Japan
- 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
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6173571A JPS5631774B2 (https=) | 1971-08-13 | 1971-08-13 | |
| CA149,281A CA967690A (en) | 1971-08-13 | 1972-08-11 | Multiplex echo canceller arrangement |
| AU45525/72A AU465782B2 (en) | 1971-08-13 | 1972-08-11 | Multiplex echo canceller arrangement |
| IT28181/72A IT963984B (it) | 1971-08-13 | 1972-08-12 | Dispositivo per eliminare l eco multiplo fra una pluralita di canali |
| DE2239770A DE2239770C2 (de) | 1971-08-13 | 1972-08-12 | Schaltungs - Vorrichtung zur Unterdrückung von Echosignalen |
| GB3789172A GB1380945A (en) | 1971-08-13 | 1972-08-14 | Multiplex echo canceller system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6173571A JPS5631774B2 (https=) | 1971-08-13 | 1971-08-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4827604A JPS4827604A (https=) | 1973-04-12 |
| JPS5631774B2 true JPS5631774B2 (https=) | 1981-07-23 |
Family
ID=13179738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6173571A Expired JPS5631774B2 (https=) | 1971-08-13 | 1971-08-13 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5631774B2 (https=) |
| AU (1) | AU465782B2 (https=) |
| CA (1) | CA967690A (https=) |
| DE (1) | DE2239770C2 (https=) |
| GB (1) | GB1380945A (https=) |
| IT (1) | IT963984B (https=) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8423017D0 (en) * | 1984-09-12 | 1984-10-17 | Plessey Co Plc | Echo canceller |
| JPS6440700A (en) * | 1987-08-07 | 1989-02-10 | Akebono Res & Dev Centre | Production of paper friction material |
| JPH04194100A (ja) * | 1990-11-21 | 1992-07-14 | Taisei:Kk | パルプ材成型品の湿式成形法 |
| DE60033358T2 (de) | 1999-11-17 | 2007-10-31 | Kao Corp. | Verfahren zur Herstellung von faserigen Formteilen |
| JP2002009675A (ja) * | 2000-06-26 | 2002-01-11 | Nec Corp | 多重化回線用エコー除去方法及び装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3562448A (en) * | 1968-06-21 | 1971-02-09 | Bell Telephone Labor Inc | Common control digital echo suppression |
-
1971
- 1971-08-13 JP JP6173571A patent/JPS5631774B2/ja not_active Expired
-
1972
- 1972-08-11 AU AU45525/72A patent/AU465782B2/en not_active Expired
- 1972-08-11 CA CA149,281A patent/CA967690A/en not_active Expired
- 1972-08-12 IT IT28181/72A patent/IT963984B/it active
- 1972-08-12 DE DE2239770A patent/DE2239770C2/de not_active Expired
- 1972-08-14 GB GB3789172A patent/GB1380945A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2239770A1 (de) | 1973-03-01 |
| IT963984B (it) | 1974-01-21 |
| AU4552572A (en) | 1974-02-14 |
| CA967690A (en) | 1975-05-13 |
| GB1380945A (en) | 1975-01-22 |
| DE2239770C2 (de) | 1984-04-19 |
| JPS4827604A (https=) | 1973-04-12 |
| AU465782B2 (en) | 1975-10-09 |