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
Application number
ES919100991A
Other languages
English (en)
Other versions
ES2038887R (es
ES2038887B1 (es
Inventor
La Fuente De La Fuente Roge De
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
APLICACIONES ELECTRONICAS QUAS
Original Assignee
APLICACIONES ELECTRONICAS QUAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by APLICACIONES ELECTRONICAS QUAS filed Critical APLICACIONES ELECTRONICAS QUAS
Priority to ES9100991A priority Critical patent/ES2038887B1/es
Publication of ES2038887A2 publication Critical patent/ES2038887A2/es
Publication of ES2038887R publication Critical patent/ES2038887R/es
Application granted granted Critical
Publication of ES2038887B1 publication Critical patent/ES2038887B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
ES9100991A 1991-04-18 1991-04-18 Hibrida digital para multiconferencia. Expired - Fee Related ES2038887B1 (es)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
ES2038887R (es) 1994-11-01
ES2038887B1 (es) 1995-05-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20000401