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ES2169024T3 - Decodificacion de lenguaje con un regenerador dtmf y procedimiento para la regeneracion de una señal dtmf. - Google Patents

Decodificacion de lenguaje con un regenerador dtmf y procedimiento para la regeneracion de una señal dtmf.

Info

Publication number
ES2169024T3
ES2169024T3 ES92250207T ES92250207T ES2169024T3 ES 2169024 T3 ES2169024 T3 ES 2169024T3 ES 92250207 T ES92250207 T ES 92250207T ES 92250207 T ES92250207 T ES 92250207T ES 2169024 T3 ES2169024 T3 ES 2169024T3
Authority
ES
Spain
Prior art keywords
dtmf
regenerator
signal
verified
dtmf signal
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
Application number
ES92250207T
Other languages
English (en)
Inventor
Esben Randers
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.)
Telit Mobile Terminals SpA
Original Assignee
Telit Mobile Terminals SpA
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
Priority claimed from DE19914126815 external-priority patent/DE4126815A1/de
Application filed by Telit Mobile Terminals SpA filed Critical Telit Mobile Terminals SpA
Application granted granted Critical
Publication of ES2169024T3 publication Critical patent/ES2169024T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/18Electrical details
    • H04Q1/30Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/46Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/18Electrical details
    • H04Q1/30Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Telephone Function (AREA)
  • Machine Translation (AREA)

Abstract

SEGUN LA INVENCION, SE REGENERA LA SEÑAL DTMF DISTORSIONADA. PARA ELLO SE EMPLEA UN REGENERADOR QUE ESTA UNIDO CON EL SISTEMA DE DECODIFICACION DEL LENGUAJE O PUEDE ESTAR INTEGRADO EN EL. EL REGENERADOR DTMF CORRIGE LAS SEÑALES DTMF DISTORSIONADAS EN UNA FORMA DE SEÑAL DTMF ESTANDAR. PARA PODER CONECTAR EL APARATO, EL CUAL CONTIENE EL SISTEMA DE DECODIFICACION DEL LENGUAJE, A APARATOS FINALES CAPACES DE SEÑALES DTMF ESTANDAR COMO, POR EJEMPLO, CONTESTADOR DE LLAMADAS Y SIMILARES, CONTIENE EL REGENERADOR UN DETECTOR, EL CUAL RECONOCE LAS SEÑALES DTMF. EL DETECTOR COMPRENDE UN FILTRO DE PASO ALTO Y UN FILTRO DE PASO BAJO, PARA SEPARAR LOS GRUPOS DE FRECUENCIAS DTMF Y UNA UNIDAD DE PROCESADO, EN LA CUAL SE DETERMINAN LAS MAGNITUDES CARACTERISTICAS DE LA SEÑAL DECODIFICADA COMO AUTOCORRELACION Y ENERGIA DE BANDA ALTA, ASI COMO ENERGIA DE BANDA BAJA Y CON ARREGLO A ESTOS VALORES SE VERIFICA UNA SEÑAL DMTF QUE SE PRESENTE, ASI COMO SE CALCULAN Y VERIFICAN TONOS DE COLUMNAS Y DE LINEAS, ASI COMO APARTIR DE ESTOS TONOS SE CONFORMA Y VERIFICA UN VALOR NUMERICO O UN VALOR DE CARACTERES Y SE TRANSFIEREN AL GENERADOR. EN ESTE GENERADOR SE CORRIGEN LOS RETARDOS QUE SE PRESENTEN EN LA DETECCION Y SE GENERA UNA SEÑAL DTMF ESTANDAR QUE CORRESPONDA AL VALOR NUMERICO O DE CARACTERES VERIFICADO CON LA LONGITUD CORRECTA COMO SEÑAL DE SALIDA.
ES92250207T 1991-08-09 1992-08-07 Decodificacion de lenguaje con un regenerador dtmf y procedimiento para la regeneracion de una señal dtmf. Expired - Lifetime ES2169024T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914126815 DE4126815A1 (de) 1991-08-09 1991-08-09 Sprachdecodierungssystem mit dtmf-regenerator und verfahren zur regenerierung eines dtmf-signals
EP91250223 1991-08-09

Publications (1)

Publication Number Publication Date
ES2169024T3 true ES2169024T3 (es) 2002-07-01

Family

ID=25906334

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92250207T Expired - Lifetime ES2169024T3 (es) 1991-08-09 1992-08-07 Decodificacion de lenguaje con un regenerador dtmf y procedimiento para la regeneracion de una señal dtmf.

Country Status (4)

Country Link
EP (1) EP0528505B1 (es)
AT (1) ATE210359T1 (es)
DE (1) DE59209938D1 (es)
ES (1) ES2169024T3 (es)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4853958A (en) * 1988-06-02 1989-08-01 Northern Telecom Limited LPC-based DTMF receiver for secondary signalling

Also Published As

Publication number Publication date
DE59209938D1 (de) 2002-01-17
ATE210359T1 (de) 2001-12-15
EP0528505A2 (de) 1993-02-24
EP0528505A3 (en) 1994-09-21
EP0528505B1 (de) 2001-12-05

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