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GB1263119A
(en)
*
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1968-11-21 |
1972-02-09 |
Nippon Electric Co |
Echo suppressor
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US3632905A
(en)
*
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1969-12-19 |
1972-01-04 |
Bell Telephone Labor Inc |
Method for improving the settling time of a transversal filter adaptive echo canceller
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|
US3732410A
(en)
*
|
1969-12-22 |
1973-05-08 |
Postmaster Department Res Labo |
Self adaptive filter and control circuit therefor
|
|
US3787645A
(en)
*
|
1971-05-19 |
1974-01-22 |
Nippon Electric Co |
Echo canceller having two echo path models
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|
US3836734A
(en)
*
|
1971-12-03 |
1974-09-17 |
Communications Satellite Corp |
Adaptive echo canceller with multi-increment gain coefficient corrections
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|
US3789165A
(en)
*
|
1972-04-24 |
1974-01-29 |
Communications Satellite Corp |
Echo canceller with variable threshold
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|
JPS5317451B2
(xx)
*
|
1973-08-20 |
1978-06-08 |
|
|
|
US4144417A
(en)
*
|
1975-03-07 |
1979-03-13 |
Kokusai Denshin Denwa Kabushiki Kaisha |
Echo cancelling system
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|
US4087654A
(en)
*
|
1975-11-28 |
1978-05-02 |
Bell Telephone Laboratories, Incorporated |
Echo canceller for two-wire full duplex data transmission
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USRE31253E
(en)
*
|
1976-09-07 |
1983-05-24 |
Bell Telephone Laboratories, Incorporated |
Echo cancellation in two-wire, two-way data transmission systems
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SE416367B
(sv)
*
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1976-09-07 |
1980-12-15 |
Western Electric Co |
Ekoelimineringsanordning
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US4129753A
(en)
*
|
1977-12-09 |
1978-12-12 |
Bell Telephone Laboratories, Incorporated |
Echo canceller using feedback to improve speech detector performance
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|
NL7902053A
(nl)
*
|
1979-03-15 |
1980-09-17 |
Philips Nv |
Echocompensator voor homochrone data overdrachtssyste- men.
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|
NL7903759A
(nl)
*
|
1979-05-14 |
1980-11-18 |
Philips Nv |
Echocompensator met hoogdoorlaatfilter.
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US4243959A
(en)
*
|
1979-06-21 |
1981-01-06 |
Bell Telephone Laboratories, Incorporated |
Adaptive filter with tap coefficient leakage
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CA1175521A
(en)
*
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1980-04-09 |
1984-10-02 |
David D. Falconer |
Echo cancellation in two-wire full-duplex data transmission with estimation of far-end data components
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US4535206A
(en)
*
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1980-04-09 |
1985-08-13 |
At&T Bell Laboratories |
Echo cancellation in two-wire full-duplex data transmission with estimation of far-end data components
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NL8220092A
(nl)
*
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1981-03-05 |
1983-02-01 |
Western Electric Co |
Energiebanddiscriminator.
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US4405840A
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*
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1981-03-05 |
1983-09-20 |
Bell Telephone Laboratories, Incorporated |
Echo canceler far end energy discriminator
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US4491701A
(en)
*
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1981-03-05 |
1985-01-01 |
At&T Bell Laboratories |
Adaptive filter including a far end energy discriminator
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GB2159376B
(en)
*
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1984-05-22 |
1987-08-26 |
Emi Ltd |
An echo cancelling system
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US4628157A
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*
|
1984-09-07 |
1986-12-09 |
At&T Bell Laboratories |
Bidirectional adaptive voice frequency repeater
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US4584441A
(en)
*
|
1984-09-07 |
1986-04-22 |
At&T Bell Laboratories |
Bidirectional adaptive voice frequency repeater
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US4731834A
(en)
*
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1984-10-01 |
1988-03-15 |
American Telephone And Telegraph Company, At&T Bell Laboratories |
Adaptive filter including signal path compensation
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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
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US4811342A
(en)
*
|
1985-11-12 |
1989-03-07 |
Racal Data Communications Inc. |
High speed analog echo canceller
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CA1242541A
(en)
*
|
1985-11-25 |
1988-09-27 |
Dany Sylvain |
Echo cancellation in two-wire transmission path repeaters
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|
FR2612029B1
(fr)
*
|
1987-03-03 |
1989-05-12 |
Connan Jean Louis |
Dispositif pour la realisation de la fonction " mains-libres " dans un poste telephonique, associant les fonctions de commutation de gain et d'annulation d'echo
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US4894820A
(en)
*
|
1987-03-24 |
1990-01-16 |
Oki Electric Industry Co., Ltd. |
Double-talk detection in an echo canceller
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US5014263A
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*
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1987-10-02 |
1991-05-07 |
Advanced Micro Devices, Inc. |
Adaptive echo-canceller with double-talker detection
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FR2651077B1
(fr)
*
|
1989-08-18 |
1994-06-10 |
Letourneur Gregoire |
Dispositif de traitement d'echo notamment acoustique dans une ligne telephonique
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CA2116584C
(en)
*
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1991-08-30 |
1999-01-19 |
Vijay R. Raman |
Adaptive echo canceller for voice messaging system
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2002-12-30 |
2005-06-28 |
Texas Instruments Incorporated |
Route delay sensitive echo cancellation
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2003-05-15 |
2006-02-21 |
At&T Corp. |
Method and system for measurement of the delay through a network link bounded by an echo canceller
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CN112671351B
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2020-12-17 |
2023-12-15 |
深圳市国微电子有限公司 |
一种应用于千兆以太网接收器系统的模拟前端电路
|