ES2091635T3 - Dispositivo de compensacion del eco. - Google Patents
Dispositivo de compensacion del eco.Info
- Publication number
- ES2091635T3 ES2091635T3 ES93921818T ES93921818T ES2091635T3 ES 2091635 T3 ES2091635 T3 ES 2091635T3 ES 93921818 T ES93921818 T ES 93921818T ES 93921818 T ES93921818 T ES 93921818T ES 2091635 T3 ES2091635 T3 ES 2091635T3
- Authority
- ES
- Spain
- Prior art keywords
- scale
- scale value
- filter
- eco
- value
- Prior art date
- 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 - Lifetime
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)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
SE DESCRIBE UN DISPOSITIVO DE COMPENSACION DE ECO CON UN FILTRO TRANSVERSAL DIGITAL PARA UN EQUIPAMIENTO DE TRANSMISION DE INFORMACION ASI COMO UNA INTERFACE DE HILO 4/2 CON AL MENOS UN DISPOSITIVO DE ESTE TIPO. LA INVENCION SUMINISTRA UN DISPOSITIVO DE VALOR DE ESCALA QUE ANALIZA EL VALOR DE CADA SEÑAL DE ENTRADA Y LOS VALORES DE LAS SEÑALES RETARDADAS EN TIEMPO DEL FILTRO TRANSVERSAL Y UN VALOR DE ESCALA COMO UNA FUNCION DE ELLOS. SE HA PREVISTO TAMBIEN UN DISPOSITIVO PARA FACTOR DE ESCALA DE TODOS LOS VALORES DE SEÑAL CON EL VALOR DE ESCALA PERTENECIENTE ANTES DE QUE HAYAN SIDO PESADOS CON LOS COEFICIENTES DE FILTRO ASIGNADOS A CADA UNO. DESPUES DE QUE HAN SIDO AÑADIDOS LOS VALORES DE SEÑAL DE ESCALA PESADOS, SE DESHACE EL PROCESO DE ESCALA DE LA SEÑAL DE SALIDA CON EL MISMO VALOR DE ESCALA CON EL CUAL LOS VALORES DE SEÑAL HAN SIDO PREVIAMENTE ESCALADOS.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4236272A DE4236272A1 (de) | 1992-10-27 | 1992-10-27 | Echokompensationsvorrichtung und 4/2-Drahtschnittstelle mit einer solchen Echokompensationsvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2091635T3 true ES2091635T3 (es) | 1996-11-01 |
Family
ID=6471480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES93921818T Expired - Lifetime ES2091635T3 (es) | 1992-10-27 | 1993-10-12 | Dispositivo de compensacion del eco. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5546460A (es) |
| EP (1) | EP0667066B1 (es) |
| JP (1) | JP2739863B2 (es) |
| AU (1) | AU677606B2 (es) |
| CA (1) | CA2147867A1 (es) |
| DE (2) | DE4236272A1 (es) |
| DK (1) | DK0667066T3 (es) |
| ES (1) | ES2091635T3 (es) |
| FI (1) | FI951999A (es) |
| HK (1) | HK1001180A1 (es) |
| WO (1) | WO1994010760A1 (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7696838B2 (en) * | 2004-09-09 | 2010-04-13 | Nec Corporation | Equalizing filter circuit |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3633105A (en) * | 1970-04-01 | 1972-01-04 | Gte Automatic Electric Lab Inc | Digital adaptive equalizer system |
| US3789560A (en) * | 1971-08-20 | 1974-02-05 | Round Eight Corp | Square circle house or like building structure |
| US3798560A (en) * | 1973-01-29 | 1974-03-19 | Bell Telephone Labor Inc | Adaptive transversal equalizer using a time-multiplexed second-order digital filter |
| US4064379A (en) * | 1976-06-11 | 1977-12-20 | Communications Satellite Corporation | Logarithmic echo canceller |
| DE3000856A1 (de) * | 1980-01-11 | 1981-07-16 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Adaptive entzerrereinrichtung |
| US4381561A (en) * | 1980-10-23 | 1983-04-26 | International Telephone And Telegraph Corporation | All digital LSI line circuit for analog lines |
| US4852036A (en) * | 1987-01-07 | 1989-07-25 | Oki Electric Industry Co., Ltd. | Adaptive digital filter and an echo canceler incorporating the same |
| US4922530A (en) * | 1988-03-18 | 1990-05-01 | Tellabs, Inc. | Adaptive filter with coefficient averaging and method |
| DE59003361D1 (de) * | 1990-03-27 | 1993-12-09 | Siemens Ag | Zweidraht-Vierdraht-Umsetzer. |
| EP0448753B1 (de) * | 1990-03-27 | 1993-11-03 | Siemens Aktiengesellschaft | Zweidraht-Vierdraht-Umsetzer |
| US5179575A (en) * | 1990-04-04 | 1993-01-12 | Sundstrand Corporation | Tracking algorithm for equalizers following variable gain circuitry |
| US5386472A (en) * | 1990-08-10 | 1995-01-31 | General Motors Corporation | Active noise control system |
| DE69131443T2 (de) * | 1990-11-01 | 1999-11-18 | Nec Corp., Tokio/Tokyo | Interferenzunterdrücker mit Steuerung der Gewichtungsfaktorenanpassung mit zum Signalleistungspegel umgekehrt proportionaler Stufenhöhe |
| US5278872A (en) * | 1991-05-28 | 1994-01-11 | North American Philips Corporation | System and circuit architecture for echo cancellation and a television receiver comprising same |
-
1992
- 1992-10-27 DE DE4236272A patent/DE4236272A1/de not_active Withdrawn
-
1993
- 1993-10-12 US US08/428,103 patent/US5546460A/en not_active Expired - Fee Related
- 1993-10-12 JP JP6510536A patent/JP2739863B2/ja not_active Expired - Lifetime
- 1993-10-12 CA CA002147867A patent/CA2147867A1/en not_active Abandoned
- 1993-10-12 WO PCT/DE1993/000968 patent/WO1994010760A1/de active IP Right Grant
- 1993-10-12 DK DK93921818.6T patent/DK0667066T3/da active
- 1993-10-12 ES ES93921818T patent/ES2091635T3/es not_active Expired - Lifetime
- 1993-10-12 EP EP93921818A patent/EP0667066B1/de not_active Expired - Lifetime
- 1993-10-12 DE DE59303900T patent/DE59303900D1/de not_active Expired - Fee Related
- 1993-10-12 AU AU51070/93A patent/AU677606B2/en not_active Ceased
-
1995
- 1995-04-26 FI FI951999A patent/FI951999A/fi unknown
-
1998
- 1998-01-12 HK HK98100232A patent/HK1001180A1/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE59303900D1 (de) | 1996-10-24 |
| FI951999A0 (fi) | 1995-04-26 |
| DK0667066T3 (da) | 1996-12-02 |
| EP0667066B1 (de) | 1996-09-18 |
| DE4236272A1 (de) | 1994-04-28 |
| EP0667066A1 (de) | 1995-08-16 |
| FI951999A (fi) | 1995-04-26 |
| HK1001180A1 (en) | 1998-05-29 |
| JPH07508627A (ja) | 1995-09-21 |
| AU5107093A (en) | 1994-05-24 |
| WO1994010760A1 (de) | 1994-05-11 |
| AU677606B2 (en) | 1997-05-01 |
| CA2147867A1 (en) | 1994-05-11 |
| US5546460A (en) | 1996-08-13 |
| JP2739863B2 (ja) | 1998-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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