KR950701165A - 에코제거시 자기발진 방지방법(a method for avoiding self-oscillation in conjunction with echo cancellation) - Google Patents
에코제거시 자기발진 방지방법(a method for avoiding self-oscillation in conjunction with echo cancellation)Info
- Publication number
- KR950701165A KR950701165A KR1019940703593A KR19940703593A KR950701165A KR 950701165 A KR950701165 A KR 950701165A KR 1019940703593 A KR1019940703593 A KR 1019940703593A KR 19940703593 A KR19940703593 A KR 19940703593A KR 950701165 A KR950701165 A KR 950701165A
- Authority
- KR
- South Korea
- Prior art keywords
- oscillation
- transfer function
- conjunction
- loop
- echo cancellation
- Prior art date
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)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Pressure Sensors (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Vehicle Body Suspensions (AREA)
- Percussion Or Vibration Massage (AREA)
- Vibration Prevention Devices (AREA)
- Gyroscopes (AREA)
- Filters That Use Time-Delay Elements (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9201145-1 | 1992-04-09 | ||
SE9201145A SE470119B (sv) | 1992-04-09 | 1992-04-09 | Metod för att undvika självsvängning i en fyrtrådsslinga i samband med ekosläckning |
PCT/SE1993/000218 WO1993021695A1 (en) | 1992-04-09 | 1993-03-11 | A method for avoiding self-oscillation in conjunction with echo cancellation |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950701165A true KR950701165A (ko) | 1995-02-20 |
KR100271343B1 KR100271343B1 (ko) | 2000-11-01 |
Family
ID=20385920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940703593A KR100271343B1 (ko) | 1992-04-09 | 1993-03-11 | 에코제거시 자기발진 방지방법 |
Country Status (16)
Country | Link |
---|---|
US (1) | US5446787A (ko) |
EP (1) | EP0635178B1 (ko) |
JP (1) | JPH07505986A (ko) |
KR (1) | KR100271343B1 (ko) |
AT (1) | ATE179849T1 (ko) |
AU (1) | AU668558B2 (ko) |
BR (1) | BR9306205A (ko) |
CA (1) | CA2131890A1 (ko) |
DE (1) | DE69324806T2 (ko) |
DK (1) | DK0635178T3 (ko) |
ES (1) | ES2132229T3 (ko) |
FI (1) | FI944726A (ko) |
GR (1) | GR3030748T3 (ko) |
NO (1) | NO306919B1 (ko) |
SE (1) | SE470119B (ko) |
WO (1) | WO1993021695A1 (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5612996A (en) * | 1995-09-21 | 1997-03-18 | Rockwell International Corporation | Loop gain processing system for speakerphone applications |
US6243366B1 (en) * | 1997-06-20 | 2001-06-05 | At&T Corp. | Method and apparatus for providing interactive two-way communications using a single one-way channel in satellite systems |
KR100477638B1 (ko) * | 2001-09-11 | 2005-03-23 | 삼성전자주식회사 | 2d/3d 겸용 디스플레이 |
US7215765B2 (en) * | 2002-06-24 | 2007-05-08 | Freescale Semiconductor, Inc. | Method and apparatus for pure delay estimation in a communication system |
US7242762B2 (en) * | 2002-06-24 | 2007-07-10 | Freescale Semiconductor, Inc. | Monitoring and control of an adaptive filter in a communication system |
US6961423B2 (en) | 2002-06-24 | 2005-11-01 | Freescale Semiconductor, Inc. | Method and apparatus for performing adaptive filtering |
US7388954B2 (en) * | 2002-06-24 | 2008-06-17 | Freescale Semiconductor, Inc. | Method and apparatus for tone indication |
EP1668854A1 (en) * | 2003-09-23 | 2006-06-14 | Koninklijke Philips Electronics N.V. | Adaptive filter |
DE502006008685D1 (de) * | 2006-11-17 | 2011-02-17 | Siemens Ag | Verfahren und anordnung zur steuerung von adaptiven filtern |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS583430A (ja) * | 1981-06-30 | 1983-01-10 | Nec Corp | まわり込信号抑圧装置 |
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 |
US4811261A (en) * | 1985-03-04 | 1989-03-07 | Oki Electric Industry Co., Ltd. | Adaptive digital filter for determining a transfer equation of an unknown system |
US4894820A (en) * | 1987-03-24 | 1990-01-16 | Oki Electric Industry Co., Ltd. | Double-talk detection in an echo canceller |
US5111481A (en) * | 1989-11-17 | 1992-05-05 | Nynex Corporation | Dual mode LMS channel equalizer |
-
1992
- 1992-04-09 SE SE9201145A patent/SE470119B/sv not_active IP Right Cessation
-
1993
- 1993-03-11 WO PCT/SE1993/000218 patent/WO1993021695A1/en active IP Right Grant
- 1993-03-11 KR KR1019940703593A patent/KR100271343B1/ko not_active IP Right Cessation
- 1993-03-11 AU AU39638/93A patent/AU668558B2/en not_active Ceased
- 1993-03-11 AT AT93909104T patent/ATE179849T1/de not_active IP Right Cessation
- 1993-03-11 DE DE69324806T patent/DE69324806T2/de not_active Expired - Fee Related
- 1993-03-11 DK DK93909104T patent/DK0635178T3/da active
- 1993-03-11 BR BR9306205A patent/BR9306205A/pt not_active IP Right Cessation
- 1993-03-11 ES ES93909104T patent/ES2132229T3/es not_active Expired - Lifetime
- 1993-03-11 JP JP5518219A patent/JPH07505986A/ja active Pending
- 1993-03-11 CA CA002131890A patent/CA2131890A1/en not_active Abandoned
- 1993-03-11 EP EP93909104A patent/EP0635178B1/en not_active Expired - Lifetime
- 1993-04-08 US US08/044,050 patent/US5446787A/en not_active Expired - Lifetime
-
1994
- 1994-10-07 FI FI944726A patent/FI944726A/fi unknown
- 1994-10-07 NO NO943781A patent/NO306919B1/no not_active IP Right Cessation
-
1999
- 1999-07-13 GR GR990401832T patent/GR3030748T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
DK0635178T3 (da) | 1999-11-15 |
DE69324806T2 (de) | 1999-10-07 |
GR3030748T3 (en) | 1999-11-30 |
NO943781L (no) | 1994-10-07 |
SE470119B (sv) | 1993-11-08 |
DE69324806D1 (de) | 1999-06-10 |
FI944726A0 (fi) | 1994-10-07 |
FI944726A (fi) | 1994-10-07 |
US5446787A (en) | 1995-08-29 |
WO1993021695A1 (en) | 1993-10-28 |
ES2132229T3 (es) | 1999-08-16 |
AU668558B2 (en) | 1996-05-09 |
NO306919B1 (no) | 2000-01-10 |
BR9306205A (pt) | 1998-06-23 |
CA2131890A1 (en) | 1993-10-28 |
SE9201145L (sv) | 1993-10-10 |
ATE179849T1 (de) | 1999-05-15 |
SE9201145D0 (sv) | 1992-04-09 |
AU3963893A (en) | 1993-11-18 |
EP0635178B1 (en) | 1999-05-06 |
JPH07505986A (ja) | 1995-06-29 |
EP0635178A1 (en) | 1995-01-25 |
KR100271343B1 (ko) | 2000-11-01 |
NO943781D0 (no) | 1994-10-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
LAPS | Lapse due to unpaid annual fee |