ES2038887A2 - Hibrida digital para multiconferencia. - Google Patents
Hibrida digital para multiconferencia.Info
- Publication number
- ES2038887A2 ES2038887A2 ES919100991A ES9100991A ES2038887A2 ES 2038887 A2 ES2038887 A2 ES 2038887A2 ES 919100991 A ES919100991 A ES 919100991A ES 9100991 A ES9100991 A ES 9100991A ES 2038887 A2 ES2038887 A2 ES 2038887A2
- Authority
- ES
- Spain
- Prior art keywords
- digital
- hybrid
- analogue
- adapting
- multiconferencing
- 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.)
- Granted
Links
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
HIBRIDA DIGITAL PARA MULTICONFERENCIA. LA HIBRIDA OBJETO DE LA INVENCION SE TRATA DE UN SISTEMA DE CANCELACION DE ECO ELECTRICO POR FILTRADO DIGITAL ADAPTATIVO Y PROCESADO DIGITAL DE LA SEÑAL, EL CUAL REALIZA UNA ADAPTACION AUTOMATICA, EN TIEMPO REAL, A LOS PARAMETROS DE LINEA ENTRE TODO EL MARGEN, DE CIRCUITO ABIERTO A CORTOCIRCUITO, ADAPTANDOSE INCLUSO A VARIACIONES INSTANTANEAS DE LA IMPEDANCIA DE LA LINEA. ESTA CONSTITUIDA POR LA ASOCIACION FUNCIONAL DE UNA HIBRIDA ANALOGICA (1) Y UN FILTRO ADAPTATIVO (13) CON LA COLABORACION DE CONVERTIDORES A/D (3, 11) Y D/A (7, 16), DE ADAPTACION ENTRE LA SECCION DE CIRCUITO DE PROCESO DIGITAL (9) Y LA ANALOGICA, Y ELEMENTOS DE CONTROL Y AUXILIARES NECESARIOS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9100991A ES2038887B1 (es) | 1991-04-18 | 1991-04-18 | Hibrida digital para multiconferencia. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9100991A ES2038887B1 (es) | 1991-04-18 | 1991-04-18 | Hibrida digital para multiconferencia. |
Publications (3)
Publication Number | Publication Date |
---|---|
ES2038887A2 true ES2038887A2 (es) | 1993-08-01 |
ES2038887R ES2038887R (es) | 1994-11-01 |
ES2038887B1 ES2038887B1 (es) | 1995-05-01 |
Family
ID=8272128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9100991A Expired - Fee Related ES2038887B1 (es) | 1991-04-18 | 1991-04-18 | Hibrida digital para multiconferencia. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2038887B1 (es) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0122594A2 (en) * | 1983-04-18 | 1984-10-24 | International Standard Electric Corporation | Line circuit with echo compensation |
EP0174749A1 (en) * | 1984-09-12 | 1986-03-19 | Plessey Overseas Limited | Echo canceller |
EP0192359A1 (en) * | 1985-01-29 | 1986-08-27 | BRITISH TELECOMMUNICATIONS public limited company | Noise cancellation |
EP0333581A1 (fr) * | 1988-03-15 | 1989-09-20 | France Telecom | Dispositif annuleur d'écho à filtrage en sous-bandes de fréquence |
GB2220546A (en) * | 1988-06-20 | 1990-01-10 | Nec Corp | Voice conference system using echo cancellers |
EP0375015A2 (en) * | 1988-12-21 | 1990-06-27 | Siemens Telecomunicazioni S.P.A. | Method and device for adaptive digital cancellation of the echo generated in telephone connections with time-variant characteristics |
-
1991
- 1991-04-18 ES ES9100991A patent/ES2038887B1/es not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0122594A2 (en) * | 1983-04-18 | 1984-10-24 | International Standard Electric Corporation | Line circuit with echo compensation |
EP0174749A1 (en) * | 1984-09-12 | 1986-03-19 | Plessey Overseas Limited | Echo canceller |
EP0192359A1 (en) * | 1985-01-29 | 1986-08-27 | BRITISH TELECOMMUNICATIONS public limited company | Noise cancellation |
EP0333581A1 (fr) * | 1988-03-15 | 1989-09-20 | France Telecom | Dispositif annuleur d'écho à filtrage en sous-bandes de fréquence |
GB2220546A (en) * | 1988-06-20 | 1990-01-10 | Nec Corp | Voice conference system using echo cancellers |
EP0375015A2 (en) * | 1988-12-21 | 1990-06-27 | Siemens Telecomunicazioni S.P.A. | Method and device for adaptive digital cancellation of the echo generated in telephone connections with time-variant characteristics |
Also Published As
Publication number | Publication date |
---|---|
ES2038887B1 (es) | 1995-05-01 |
ES2038887R (es) | 1994-11-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20000401 |