JPS5637739B2 - - Google Patents
Info
- Publication number
- JPS5637739B2 JPS5637739B2 JP1650072A JP1650072A JPS5637739B2 JP S5637739 B2 JPS5637739 B2 JP S5637739B2 JP 1650072 A JP1650072 A JP 1650072A JP 1650072 A JP1650072 A JP 1650072A JP S5637739 B2 JPS5637739 B2 JP S5637739B2
- 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 (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1650072A JPS5637739B2 (https=) | 1972-02-18 | 1972-02-18 | |
| US00333469A US3828147A (en) | 1972-02-18 | 1973-02-20 | Echo canceller arrangement comprising quasi-static echo cancellers and a smaller number of self-adaptive echo cancellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1650072A JPS5637739B2 (https=) | 1972-02-18 | 1972-02-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4887709A JPS4887709A (https=) | 1973-11-17 |
| JPS5637739B2 true JPS5637739B2 (https=) | 1981-09-02 |
Family
ID=11917984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1650072A Expired JPS5637739B2 (https=) | 1972-02-18 | 1972-02-18 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3828147A (https=) |
| JP (1) | JPS5637739B2 (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63188349U (https=) * | 1987-05-28 | 1988-12-02 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50144314A (https=) * | 1974-05-09 | 1975-11-20 | ||
| JPS51144111A (en) * | 1975-06-05 | 1976-12-10 | Kokusai Denshin Denwa Co Ltd <Kdd> | Echo cancelling method |
| JPS5737937A (en) * | 1980-08-15 | 1982-03-02 | Hitachi Ltd | Automatic hybrid circuit |
| US4628156A (en) * | 1982-12-27 | 1986-12-09 | International Business Machines Corporation | Canceller trained echo suppressor |
| US4554417A (en) * | 1983-02-04 | 1985-11-19 | At&T Bell Laboratories | Tandem adaptive echo canceler arrangement |
| US4574166A (en) * | 1983-02-04 | 1986-03-04 | At&T Bell Laboratories | Tandem adaptive filter arrangement |
| US4712235A (en) * | 1984-11-19 | 1987-12-08 | International Business Machines Corporation | Method and apparatus for improved control and time sharing of an echo canceller |
| WO1993005597A1 (en) * | 1991-08-30 | 1993-03-18 | Digital Sound Corporation | Adaptive echo canceller for voice messaging system |
| US6799062B1 (en) | 2000-10-19 | 2004-09-28 | Motorola Inc. | Full-duplex hands-free transparency circuit and method therefor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1816153B2 (de) * | 1968-12-20 | 1971-04-15 | Schaltungsanordnung zur echounterdrueckung in einem sprech kreis auf einem vierdraht uebertragungssystem bei einem uebergang auf einen zweidrahtuebertragungsweg | |
| US3647992A (en) * | 1970-03-05 | 1972-03-07 | Bell Telephone Labor Inc | Adaptive echo canceller for nonlinear systems |
-
1972
- 1972-02-18 JP JP1650072A patent/JPS5637739B2/ja not_active Expired
-
1973
- 1973-02-20 US US00333469A patent/US3828147A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63188349U (https=) * | 1987-05-28 | 1988-12-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| US3828147A (en) | 1974-08-06 |
| JPS4887709A (https=) | 1973-11-17 |