ES2103673B1 - Interfaz pcm multilinea para procesado de señal. - Google Patents
Interfaz pcm multilinea para procesado de señal.Info
- Publication number
- ES2103673B1 ES2103673B1 ES09402697A ES9402697A ES2103673B1 ES 2103673 B1 ES2103673 B1 ES 2103673B1 ES 09402697 A ES09402697 A ES 09402697A ES 9402697 A ES9402697 A ES 9402697A ES 2103673 B1 ES2103673 B1 ES 2103673B1
- Authority
- ES
- Spain
- Prior art keywords
- digital
- adpcm
- converters
- analog
- pcm
- 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
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3044—Conversion to or from differential modulation with several bits only, i.e. the difference between successive samples being coded by more than one bit, e.g. differential pulse code modulation [DPCM]
- H03M7/3046—Conversion to or from differential modulation with several bits only, i.e. the difference between successive samples being coded by more than one bit, e.g. differential pulse code modulation [DPCM] adaptive, e.g. adaptive differential pulse code modulation [ADPCM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/725—Cordless telephones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/08—Details of telephonic subscriber devices home cordless telephone systems using the DECT standard
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Telephonic Communication Services (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
INTERFAZ PCM MULTILINEA PARA PROCESADO DE SEÑAL. DE ESPECIAL APLICACION EN TELEFONIA DIGITAL SIN HILOS, TIPO DECT, CANCELACION DE ECO Y CODIFICACION DE VOZ TIPO ADPCM. DISPONE DE UN CONJUNTO DE CODIFICADORES ADPCM (COD), DECODIFICADORES ADPCM (DEC), CONVERTIDORES DIGITAL-ANALOGICO (D/A) Y CONVERTIDORES ANALOGICO-DIGITAL (A/D). LAS SALIDAS DE LOS DECODIFICADORES ADPCM (DEC) Y CONVERTIDORES ANALOGICO-DIGITAL (A/D) SE ENCUENTRAN UNIDAS FORMANDO UN BUS PCM DE SALIDA (BPO), LAS ENTRADAS DE LOS CONVERTIDORES DIGITAL-ANALOGICO (D/A) Y CODIFICADORES ADPCM (COD) SE ENCUENTRAN UNIDAS FORMANDO UN BUS PCM DE ENTRADA (PI). CUENTA TAMBIEN CON MEDIOS DE PROCESADO DE SEÑAL (MSP) QUE RECIBEN RAFAGAS DE DATOS DEL BUS PCM DE SALIDA (BPO) Y ENTREGAN AL BUS PCM DE ENTRADA (PI) ESTAS MISMAS RAFAGAS CON UN RETARDO DE UNA TRAMA Y SIN ECO. UN GENERADOR DE SINCRONISMOS (SYGEN) ASIGNA RANURAS DE TIEMPO CONSECUTIVAS A LOS CONVERTIDORES INVOLUCRADOS EN UNA MISMA CONVERSACION DE FORMA QUE ESTOS UTILICEN UN MISMO PROCESADOR DE SEÑAL (DSP) PARA REALIZAR OPERACIONES DE CONFERENCIA ASOCIADAS.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09402697A ES2103673B1 (es) | 1994-12-30 | 1994-12-30 | Interfaz pcm multilinea para procesado de señal. |
AU40418/95A AU706570B2 (en) | 1994-12-30 | 1995-12-14 | PCM multiline interface |
EP95120270A EP0720401A3 (en) | 1994-12-30 | 1995-12-21 | Multiline PCM interface for signal processing |
US08/579,406 US5796731A (en) | 1994-12-30 | 1995-12-27 | Multiline PCM interface for signal processing |
JP7341915A JPH08279762A (ja) | 1994-12-30 | 1995-12-27 | 信号処理用の多ラインpcmインターフェイス |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09402697A ES2103673B1 (es) | 1994-12-30 | 1994-12-30 | Interfaz pcm multilinea para procesado de señal. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2103673A1 ES2103673A1 (es) | 1997-09-16 |
ES2103673B1 true ES2103673B1 (es) | 1998-05-01 |
Family
ID=8288457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES09402697A Expired - Lifetime ES2103673B1 (es) | 1994-12-30 | 1994-12-30 | Interfaz pcm multilinea para procesado de señal. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5796731A (es) |
EP (1) | EP0720401A3 (es) |
JP (1) | JPH08279762A (es) |
AU (1) | AU706570B2 (es) |
ES (1) | ES2103673B1 (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0834995A1 (de) * | 1996-10-07 | 1998-04-08 | Alcatel | ADPCM-Transkodierer |
US6421326B1 (en) * | 1997-07-24 | 2002-07-16 | Innomedia Pte Ltd | Wireless communications system and method |
EP1157498A4 (en) * | 1999-12-27 | 2002-04-17 | Telogy Networks Inc | DIGITAL EXTENSION OF THE MODULE'S ECHO CANCELLATOR |
US7551663B1 (en) * | 2001-02-01 | 2009-06-23 | Ipr Licensing, Inc. | Use of correlation combination to achieve channel detection |
DE60238791D1 (de) * | 2002-03-20 | 2011-02-10 | Dounaev Igor Borisovich | Verfahren und systeme zur digitalen datenübertragung |
US20040228545A1 (en) * | 2003-05-12 | 2004-11-18 | Kwang-Bo Cho | Multisampling with reduced bit samples |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD213339A1 (de) * | 1983-01-25 | 1984-09-05 | Guenther Barthel | Koppelanordnung fuer digitale fernsprechvermittlungszentralen |
US4777633A (en) * | 1987-08-14 | 1988-10-11 | International Mobile Machines Corp. | Base station for wireless digital telephone system |
IT1215591B (it) * | 1987-06-26 | 1990-02-14 | Italtel Telematica | Elemento di commutazione di segnali pcm. |
US5253291A (en) * | 1990-10-18 | 1993-10-12 | Ag Communication Systems Corporation | Hybrid balance and combination codec filter circuit |
US5247516A (en) * | 1991-03-28 | 1993-09-21 | Sprint International Communications Corp. | Configurable composite data frame |
KR940004432B1 (ko) * | 1991-10-02 | 1994-05-25 | 삼성전자 주식회사 | 전자교환기의 PCM CODEC(DOCER and DECODER) 집적회로 |
US5317522A (en) * | 1992-01-15 | 1994-05-31 | Motorola, Inc. | Method and apparatus for noise burst detection in a signal processor |
US5555287A (en) * | 1992-07-21 | 1996-09-10 | Advanced Micro Devices, Inc. | Integrated circuit and cordless telephone using the integrated circuit |
FI98429C (fi) * | 1993-08-12 | 1997-06-10 | Nokia Telecommunications Oy | CT2-puhelinjärjestelmä |
US5600674A (en) * | 1995-03-02 | 1997-02-04 | Motorola Inc. | Method and apparatus of an enhanced digital signal processor |
-
1994
- 1994-12-30 ES ES09402697A patent/ES2103673B1/es not_active Expired - Lifetime
-
1995
- 1995-12-14 AU AU40418/95A patent/AU706570B2/en not_active Ceased
- 1995-12-21 EP EP95120270A patent/EP0720401A3/en not_active Withdrawn
- 1995-12-27 JP JP7341915A patent/JPH08279762A/ja active Pending
- 1995-12-27 US US08/579,406 patent/US5796731A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU706570B2 (en) | 1999-06-17 |
EP0720401A3 (en) | 2000-07-12 |
US5796731A (en) | 1998-08-18 |
AU4041895A (en) | 1996-07-11 |
EP0720401A2 (en) | 1996-07-03 |
JPH08279762A (ja) | 1996-10-22 |
ES2103673A1 (es) | 1997-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EC2A | Search report published |
Date of ref document: 19970916 Kind code of ref document: A1 Effective date: 19970916 |