ES2140168T3 - Expansor de datos de recepcion con reduccion de ruido al generarse error de datos de recepcion. - Google Patents

Expansor de datos de recepcion con reduccion de ruido al generarse error de datos de recepcion.

Info

Publication number
ES2140168T3
ES2140168T3 ES97112731T ES97112731T ES2140168T3 ES 2140168 T3 ES2140168 T3 ES 2140168T3 ES 97112731 T ES97112731 T ES 97112731T ES 97112731 T ES97112731 T ES 97112731T ES 2140168 T3 ES2140168 T3 ES 2140168T3
Authority
ES
Spain
Prior art keywords
code
error
error detection
detected
detection information
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
ES97112731T
Other languages
English (en)
Inventor
Kenji Murata
Koji Goto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of ES2140168T3 publication Critical patent/ES2140168T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
    • H04B14/066—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using differential modulation with several bits [NDPCM]
    • H04B14/068—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using differential modulation with several bits [NDPCM] with adaptive feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

UN EXPANSOR DE DATOS DE RECEPCION INCLUYE: UN DECODIFICADOR DE MODULACION DE CODIGO DE IMPULSO DIFERENCIAL ADAPTABLE (ADPCM) (3) QUE SE ACTIVA CUANDO LA INFORMACION DE DETECCION DE ERROR (102) ALCANZA UN ESTADO DE ERROR NO DETECTADO DE DATO DE RECEPCION PARA EXPANDIR UN CODIGO DE ENTRADA ADPCM (101) EN UN CODIGO PCM (105) Y SE INHIBE DE SU OPERACION DE PROCESO DE DECODIFICACION CUANDO LA INFORMACION DE DETECCION DE ERROR INDICA UN ESTADO DE DETECCION DE ERROR; UN CIRCUITO DE MEMORIA (4) SE ESTABLECE EN UN ESTADO DE ESCRITURA CUANDO LA INFORMACION DE DETECCION DE ERROR ALCANZA UN ESTADO DE ERROR NO DETECTADO PARA EL ALMACENAMIENTO SECUENCIAL DEL CODIGO ADPM GENERADO Y EXTRAER UN CODIGO PCM ALMACENADO CUANDO LA INFORMACION DE DETECCION DE ERROR SE DEVUELVE A UN ESTADO DE ERROR DETECTADO; Y UN CONMUTADOR DE SALIDA RECONSTRUIDA (5) PARA SELECCIONAR Y SUMINISTRAR AL SIGUIENTE CODIFICADOR PCM UN CODIGO PCM (5) CUANDO LA INFORMACION DE DETECCION DE ERROR ALCANZA UN ESTADO DE ERROR NO DETECTADO Y LEER DEL CIRCUITO DE MEMORIA UN CODIGO PCM (106) CUANDO LA INFORMACION DE DETECCION DE ERROR ALCANZA UN ESTADO DE ERROR DETECTADO. PUEDE ELIMINARSE DE MANERA EFECTIVA LA GENERACION DE RUIDO A CONSECUENCIA DE LA DISCONTINUIDAD DE UN CODIGO ADPCM EN EL MOMENTO DE LA GENERACION DE LOS DATOS DE RECEPCION SIN AUMENTAR LA COMPLEJIDAD DEL DISPOSITIVO Y EL CONSUMO DE POTENCIA.
ES97112731T 1997-01-24 1997-07-24 Expansor de datos de recepcion con reduccion de ruido al generarse error de datos de recepcion. Expired - Lifetime ES2140168T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1120597A JP3596841B2 (ja) 1997-01-24 1997-01-24 受信データ伸長装置

Publications (1)

Publication Number Publication Date
ES2140168T3 true ES2140168T3 (es) 2000-02-16

Family

ID=11771521

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97112731T Expired - Lifetime ES2140168T3 (es) 1997-01-24 1997-07-24 Expansor de datos de recepcion con reduccion de ruido al generarse error de datos de recepcion.

Country Status (7)

Country Link
US (1) US5925146A (es)
EP (1) EP0856960B1 (es)
JP (1) JP3596841B2 (es)
KR (1) KR100262721B1 (es)
DE (1) DE69700620T2 (es)
DK (1) DK0856960T3 (es)
ES (1) ES2140168T3 (es)

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US6427219B1 (en) * 1998-06-24 2002-07-30 Conexant Systems, Inc. Method and apparatus for detecting and correcting errors using cyclic redundancy check
US6622275B2 (en) * 1998-09-12 2003-09-16 Qualcomm, Incorporated Method and apparatus supporting TDD/TTY modulation over vocoded channels
JP2000278142A (ja) * 1999-03-23 2000-10-06 Toshiba Video Products Japan Kk デジタルデータ記録再生装置
KR100601627B1 (ko) * 1999-11-26 2006-07-14 삼성전자주식회사 블루투스 베이스밴드에서 수신된 데이터 패킷의 디코딩장치 및 디코딩 방법
US6931124B1 (en) * 2000-01-13 2005-08-16 Acoustic Technology, Inc. Soft mute circuit
JP3881157B2 (ja) * 2000-05-23 2007-02-14 株式会社エヌ・ティ・ティ・ドコモ 音声処理方法及び音声処理装置
CN1205540C (zh) * 2000-12-29 2005-06-08 深圳赛意法微电子有限公司 含有解码器的电路、时分寻址的方法和一个微控制器
JP2002237803A (ja) * 2001-02-08 2002-08-23 Oki Electric Ind Co Ltd 受信回路
US7321559B2 (en) * 2002-06-28 2008-01-22 Lucent Technologies Inc System and method of noise reduction in receiving wireless transmission of packetized audio signals
JP3922979B2 (ja) * 2002-07-10 2007-05-30 松下電器産業株式会社 伝送路符号化方法、復号化方法、及び装置
JP4398323B2 (ja) * 2004-08-09 2010-01-13 ユニデン株式会社 デジタル無線通信装置
EP1846921B1 (en) 2005-01-31 2017-10-04 Skype Method for concatenating frames in communication system
KR100736608B1 (ko) 2005-05-31 2007-07-09 엘지전자 주식회사 오디오 출력 장치 및 오디오 출력 방법
JP4257862B2 (ja) 2006-10-06 2009-04-22 パナソニック株式会社 音声復号化装置
JP4915577B2 (ja) * 2007-05-28 2012-04-11 パナソニック株式会社 音声伝送システム
JP4915575B2 (ja) * 2007-05-28 2012-04-11 パナソニック株式会社 音声伝送システム
JP4915576B2 (ja) * 2007-05-28 2012-04-11 パナソニック株式会社 音声伝送システム
JP5053712B2 (ja) * 2007-05-29 2012-10-17 京セラ株式会社 無線端末および無線端末の音声再生方法
JP2009047914A (ja) * 2007-08-20 2009-03-05 Nec Corp 音声復号化装置、音声復号化方法、音声復号化プログラムおよびプログラム記録媒体
US8204753B2 (en) * 2007-08-23 2012-06-19 Texas Instruments Incorporated Stabilization and glitch minimization for CCITT recommendation G.726 speech CODEC during packet loss scenarios by regressor control and internal state updates of the decoding process
JP2009093056A (ja) * 2007-10-11 2009-04-30 Oki Semiconductor Co Ltd ディジタル音声通信方法及びディジタル音声通信装置
JP5256756B2 (ja) 2008-02-05 2013-08-07 パナソニック株式会社 Ａｄｐｃｍ音声伝送システムの音声処理装置およびその音声処理方法
US20100138724A1 (en) * 2008-12-01 2010-06-03 Dsp Group Ltd. Adaptive error protection for wireless communications
JP5326051B2 (ja) * 2009-10-15 2013-10-30 ヴェーデクス・アクティーセルスカプ 音声コーデックを備えた補聴器および方法
US8468421B2 (en) * 2010-06-23 2013-06-18 International Business Machines Corporation Memory system for error checking fetch and store data
KR20130123713A (ko) * 2012-05-03 2013-11-13 현대모비스 주식회사 팝 노이즈 제거 방법
JP6379351B2 (ja) * 2014-04-02 2018-08-29 パナソニックＩｐマネジメント株式会社 無線通信装置、無線通信装置の制御方法
US9934788B2 (en) * 2016-08-01 2018-04-03 Bose Corporation Reducing codec noise in acoustic devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7807171A (nl) * 1978-06-30 1980-01-03 Philips Nv Ontvanger voor digitale signalen in lijncode.
US5309443A (en) * 1992-06-04 1994-05-03 Motorola, Inc. Dynamic muting method for ADPCM coded speech
JPH05347594A (ja) * 1992-06-16 1993-12-27 Matsushita Electric Ind Co Ltd 伝送符号誤り補償装置
AU4384396A (en) * 1995-01-20 1996-08-07 Siemens Aktiengesellschaft Signal processing method for a block-coded audio signal in an audio information transmission system

Also Published As

Publication number Publication date
DE69700620T2 (de) 2000-04-06
EP0856960A1 (en) 1998-08-05
KR100262721B1 (ko) 2000-08-01
US5925146A (en) 1999-07-20
KR19980069844A (ko) 1998-10-26
JP3596841B2 (ja) 2004-12-02
JPH10209977A (ja) 1998-08-07
EP0856960B1 (en) 1999-10-13
DE69700620D1 (de) 1999-11-18
DK0856960T3 (da) 2000-04-10

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