CH444601A
(de)
*
|
1966-12-13 |
1967-09-30 |
Beringer Hydraulik Gmbh |
Steuervorrichtung für hydraulisch betriebene Einrichtungen
|
JPS5438720B1
(US20080094685A1-20080424-C00004.png)
*
|
1971-05-11 |
1979-11-22 |
|
|
JPS5240381B2
(US20080094685A1-20080424-C00004.png)
*
|
1972-05-20 |
1977-10-12 |
|
|
JPS5613207B2
(US20080094685A1-20080424-C00004.png)
*
|
1972-05-27 |
1981-03-26 |
|
|
JPS5320012Y2
(US20080094685A1-20080424-C00004.png)
*
|
1972-11-21 |
1978-05-26 |
|
|
JPS4989923A
(US20080094685A1-20080424-C00004.png)
*
|
1972-12-29 |
1974-08-28 |
|
|
JPS4992616A
(US20080094685A1-20080424-C00004.png)
*
|
1972-12-30 |
1974-09-04 |
|
|
JPS5019019A
(US20080094685A1-20080424-C00004.png)
*
|
1973-05-29 |
1975-02-28 |
|
|
JPS5048225U
(US20080094685A1-20080424-C00004.png)
*
|
1973-08-28 |
1975-05-13 |
|
|
US3894200A
(en)
*
|
1973-10-10 |
1975-07-08 |
Communications Satellite Corp |
Adaptive echo canceller with digital center clipping
|
US3946170A
(en)
*
|
1973-11-29 |
1976-03-23 |
Brooks Fred A |
Self regulating telephone sets
|
US3941948A
(en)
*
|
1973-11-29 |
1976-03-02 |
Brooks Fred A |
Four-wire interface regulator for long distance trunk circuits
|
DE2435569C2
(de)
*
|
1974-07-24 |
1985-06-27 |
Alfred Teves Gmbh, 6000 Frankfurt |
Elektromagnetisch betätigbares 3/2-Wegeventil
|
JPS5120952A
(US20080094685A1-20080424-C00004.png)
*
|
1974-08-16 |
1976-02-19 |
Yuken Kogyo Co Ltd |
|
JPS5434116B2
(US20080094685A1-20080424-C00004.png)
*
|
1974-08-21 |
1979-10-24 |
|
|
JPS5147613A
(US20080094685A1-20080424-C00004.png)
*
|
1974-10-22 |
1976-04-23 |
Sumitomo Precision Prod Co |
|
JPS6022201B2
(ja)
*
|
1974-10-29 |
1985-05-31 |
ダイキン工業株式会社 |
流体装置
|
US4144417A
(en)
*
|
1975-03-07 |
1979-03-13 |
Kokusai Denshin Denwa Kabushiki Kaisha |
Echo cancelling system
|
JPS5232018U
(US20080094685A1-20080424-C00004.png)
*
|
1975-08-29 |
1977-03-07 |
|
|
US4031338A
(en)
*
|
1976-02-10 |
1977-06-21 |
Communications Satellite Corporation (Comsat) |
Echo suppressor using frequency-selective center clipping
|
JPS54122425A
(en)
*
|
1978-07-25 |
1979-09-22 |
Daikin Ind Ltd |
Direct current system electromagnetic changeeover valve
|
JPS5824641Y2
(ja)
*
|
1979-03-22 |
1983-05-27 |
ダイキン工業株式会社 |
流体制御装置
|
FR2452647A1
(fr)
*
|
1979-03-26 |
1980-10-24 |
Renault |
Servo-valve
|
JPS55115604A
(en)
*
|
1980-02-27 |
1980-09-05 |
Daikin Ind Ltd |
Fluid control system
|
JPS56154042A
(en)
*
|
1980-03-06 |
1981-11-28 |
Nissei Plastics Ind Co |
Hydraulic device for opening and closing dies of molding machine
|
US4644108A
(en)
*
|
1982-10-27 |
1987-02-17 |
International Business Machines Corporation |
Adaptive sub-band echo suppressor
|
DE3331928A1
(de)
*
|
1982-11-12 |
1984-06-14 |
Comdial Consumer Communications Corp., El Monte, Calif. |
Voll-duplex lautsprechertelefon
|
JPS5980504A
(ja)
*
|
1983-04-07 |
1984-05-10 |
Daikin Ind Ltd |
流体装置
|
JPS5937305A
(ja)
*
|
1983-04-07 |
1984-02-29 |
Daikin Ind Ltd |
流体装置
|
JPS60157574A
(ja)
*
|
1984-01-28 |
1985-08-17 |
Hitachi Constr Mach Co Ltd |
電磁比例弁
|
JPH0424224Y2
(US20080094685A1-20080424-C00004.png)
*
|
1987-01-09 |
1992-06-08 |
|
|
US4894820A
(en)
*
|
1987-03-24 |
1990-01-16 |
Oki Electric Industry Co., Ltd. |
Double-talk detection in an echo canceller
|
DE3728109C1
(de)
*
|
1987-08-22 |
1989-03-16 |
Telefonbau & Normalzeit Gmbh |
Verfahren fuer die sprachgesteuerte Daempfungsregelung in Fernsprechuebertragungskreisen
|
JPS6443278U
(US20080094685A1-20080424-C00004.png)
*
|
1987-09-11 |
1989-03-15 |
|
|
US5305307A
(en)
*
|
1991-01-04 |
1994-04-19 |
Picturetel Corporation |
Adaptive acoustic echo canceller having means for reducing or eliminating echo in a plurality of signal bandwidths
|
US5307405A
(en)
*
|
1992-09-25 |
1994-04-26 |
Qualcomm Incorporated |
Network echo canceller
|
US5321848A
(en)
*
|
1992-09-28 |
1994-06-14 |
H.M. Electronics, Inc. |
Drive-up station full duplex communication system and method of using same
|
US5471527A
(en)
*
|
1993-12-02 |
1995-11-28 |
Dsc Communications Corporation |
Voice enhancement system and method
|
EP0847180A1
(en)
*
|
1996-11-27 |
1998-06-10 |
Nokia Mobile Phones Ltd. |
Double talk detector
|
SG71035A1
(en)
*
|
1997-08-01 |
2000-03-21 |
Bitwave Pte Ltd |
Acoustic echo canceller
|
US6031908A
(en)
*
|
1997-11-14 |
2000-02-29 |
Tellabs Operations, Inc. |
Echo canceller employing dual-H architecture having variable adaptive gain settings
|
US6198819B1
(en)
*
|
1997-11-14 |
2001-03-06 |
Tellabs Operations, Inc. |
Echo canceller having improved non-linear processor
|
US6442275B1
(en)
|
1998-09-17 |
2002-08-27 |
Lucent Technologies Inc. |
Echo canceler including subband echo suppressor
|
KR100279825B1
(ko)
*
|
1998-12-23 |
2001-02-01 |
윤종용 |
교환기에서 에코 및 측음 현상을 제거하는 회로
|
US6798881B2
(en)
*
|
1999-06-07 |
2004-09-28 |
Acoustic Technologies, Inc. |
Noise reduction circuit for telephones
|
US6963642B1
(en)
*
|
1999-12-30 |
2005-11-08 |
Acoustic Technology, Inc. |
Band-by-band full duplex communication
|
US10367948B2
(en)
*
|
2017-01-13 |
2019-07-30 |
Shure Acquisition Holdings, Inc. |
Post-mixing acoustic echo cancellation systems and methods
|