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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/46—Signalling 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/457—Signalling 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
- H04Q1/4575—Signalling 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.
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)
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 |
-
1992
- 1992-08-07 ES ES92250207T patent/ES2169024T3/es not_active Expired - Lifetime
- 1992-08-07 EP EP92250207A patent/EP0528505B1/de not_active Expired - Lifetime
- 1992-08-07 AT AT92250207T patent/ATE210359T1/de not_active IP Right Cessation
- 1992-08-07 DE DE59209938T patent/DE59209938D1/de not_active Expired - Lifetime
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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