CO4790202A1 - Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta - Google Patents

Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta

Info

Publication number
CO4790202A1
CO4790202A1 CO98029413A CO98029413A CO4790202A1 CO 4790202 A1 CO4790202 A1 CO 4790202A1 CO 98029413 A CO98029413 A CO 98029413A CO 98029413 A CO98029413 A CO 98029413A CO 4790202 A1 CO4790202 A1 CO 4790202A1
Authority
CO
Colombia
Prior art keywords
signal
integrated
sigma
noise reduction
periodic noise
Prior art date
Application number
CO98029413A
Other languages
English (en)
Spanish (es)
Inventor
Olof Frannhagen Mats
Henrik Fremrot Per
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of CO4790202A1 publication Critical patent/CO4790202A1/es

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
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3006—Compensating for, or preventing of, undesired influence of physical parameters
    • H03M7/3008—Compensating for, or preventing of, undesired influence of physical parameters by averaging out the errors, e.g. using dither
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/02—Delta modulation, i.e. one-bit differential modulation
    • 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
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/302—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M7/3028—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • 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
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
    • H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
    • H03M7/304—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
CO98029413A 1997-05-27 1998-05-26 Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta CO4790202A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9701986A SE509408C2 (sv) 1997-05-27 1997-05-27 Anordning och förfarande för reducering av periodiskt brus i en sigma-delta modulator

Publications (1)

Publication Number Publication Date
CO4790202A1 true CO4790202A1 (es) 1999-05-31

Family

ID=20407109

Family Applications (1)

Application Number Title Priority Date Filing Date
CO98029413A CO4790202A1 (es) 1997-05-27 1998-05-26 Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta

Country Status (12)

Country Link
US (1) US6175321B1 (enExample)
EP (1) EP1080534B1 (enExample)
JP (1) JP4027434B2 (enExample)
KR (1) KR20010013111A (enExample)
CN (1) CN1260913A (enExample)
AR (1) AR012873A1 (enExample)
AU (1) AU751275B2 (enExample)
BR (1) BR9809163A (enExample)
CO (1) CO4790202A1 (enExample)
EE (1) EE03500B1 (enExample)
SE (1) SE509408C2 (enExample)
WO (1) WO1998054840A2 (enExample)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001037016A1 (en) 1999-11-19 2001-05-25 New Focus, Inc. Method and apparatus for an electro optic converter
US6456223B1 (en) * 1999-12-28 2002-09-24 Texas Instruments Incorporated Pipelined analog to digital converter using digital mismatch noise cancellation
US6897772B1 (en) * 2000-11-14 2005-05-24 Honeywell International, Inc. Multi-function control system
JP4649777B2 (ja) * 2001-02-09 2011-03-16 ソニー株式会社 デルタシグマ変調装置及び方法、並びにデジタル信号処理装置及び方法
US6823033B2 (en) * 2002-03-12 2004-11-23 Qualcomm Inc. ΣΔdelta modulator controlled phase locked loop with a noise shaped dither
TWI235000B (en) * 2002-09-24 2005-06-21 Mstar Semiconductor Inc Apparatus and method for masking interference noise contained in signal source
US20040141559A1 (en) * 2002-10-24 2004-07-22 Tewfik Ahmed H. Generating UWB-OFDM signal using sigma-delta modulator
DE60328925D1 (de) * 2002-12-24 2009-10-01 Fujitsu Microelectronics Ltd Jittergenerator
US7561635B2 (en) * 2003-08-05 2009-07-14 Stmicroelectronics Nv Variable coder apparatus for resonant power conversion and method
EP1612946B1 (en) * 2004-07-01 2007-03-21 Ericsson Technology Licensing AB Apparatus comprising a sigma-delta modulator and method of generating a quantized signal in a sigma-delta modulator
KR101156877B1 (ko) 2004-07-01 2012-06-20 텔레폰악티에볼라겟엘엠에릭슨(펍) 시그마-델타 변조기를 포함하는 장치 및 시그마-델타변조기에서 양자화된 신호를 발생시키는 방법
US6980145B1 (en) * 2004-07-30 2005-12-27 Broadcom Corporation System and method for noise cancellation in a signal processing circuit
US7362250B2 (en) * 2005-01-31 2008-04-22 Texas Instruments Incorporated Dynamic dither for sigma-delta converters
GB0514677D0 (en) * 2005-07-18 2005-08-24 Queen Mary & Westfield College Sigma delta modulators
EP1946445A4 (en) * 2005-09-23 2009-02-04 Univ Rochester SIGMA-DELTA ANALOGUE-DIGITAL CONVERTER MODULATED BY BLUE NOISE
US7215267B1 (en) * 2005-12-19 2007-05-08 Cirrus Logic, Inc. Analog-to-digital converter with dither control
US7538701B2 (en) * 2006-06-08 2009-05-26 Cosmic Circuits Private Limited System and method for improving dynamic performance of a circuit
JP2009088924A (ja) 2007-09-28 2009-04-23 Fujitsu Ltd 信号変調方法、信号変調装置、電子装置および信号変調プログラム
JP4856659B2 (ja) * 2008-01-30 2012-01-18 ルネサスエレクトロニクス株式会社 半導体集積回路装置
KR101182407B1 (ko) 2008-12-22 2012-09-13 한국전자통신연구원 펄스 생성기 및 연속시간 시그마-델타 변조기
US8866655B2 (en) * 2012-08-10 2014-10-21 Infineon Technologies Ag Modulator with variable quantizer
EP3694109B1 (en) * 2014-02-25 2023-05-03 ams AG Microphone arrangement
US11121718B1 (en) * 2020-08-12 2021-09-14 Analog Devices International Unlimited Company Multi-stage sigma-delta analog-to-digital converter with dither
CN114095030B (zh) * 2021-10-14 2025-09-16 中国兵器工业集团第二一四研究所苏州研发中心 一种全差分带弦音消除的sigma-delta ADC

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999129A (en) * 1975-04-16 1976-12-21 Rolm Corporation Method and apparatus for error reduction in digital information transmission systems
JPS62140518A (ja) * 1985-12-13 1987-06-24 Advantest Corp Ａｄ変換装置
US5010347A (en) 1987-09-25 1991-04-23 Nec Corporation Analog-to-digital converter having an excellent signal-to-noise ratio for small signals
JP2647136B2 (ja) * 1988-05-13 1997-08-27 株式会社東芝 アナログ−デジタル変換回路
JP3012887B2 (ja) * 1989-03-13 2000-02-28 日本テキサス・インスツルメンツ株式会社 信号変換装置
US5055843A (en) * 1990-01-31 1991-10-08 Analog Devices, Inc. Sigma delta modulator with distributed prefiltering and feedback
US5144308A (en) * 1991-05-21 1992-09-01 At&T Bell Laboratories Idle channel tone and periodic noise suppression for sigma-delta modulators using high-level dither

Also Published As

Publication number Publication date
AU7793898A (en) 1998-12-30
EE9900536A (et) 2000-06-15
JP2002502565A (ja) 2002-01-22
EP1080534A2 (en) 2001-03-07
SE9701986L (sv) 1998-11-28
WO1998054840A3 (en) 1999-03-11
BR9809163A (pt) 2000-08-01
EE03500B1 (et) 2001-08-15
WO1998054840A2 (en) 1998-12-03
SE509408C2 (sv) 1999-01-25
AR012873A1 (es) 2000-11-22
AU751275B2 (en) 2002-08-08
CN1260913A (zh) 2000-07-19
JP4027434B2 (ja) 2007-12-26
US6175321B1 (en) 2001-01-16
EP1080534B1 (en) 2006-02-22
SE9701986D0 (sv) 1997-05-27
KR20010013111A (ko) 2001-02-26

Similar Documents

Publication Publication Date Title
CO4790202A1 (es) Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta
MX9301552A (es) Metodo y aparato para estimar los parametros de medicion de señal de un receptor.
ES2085680T5 (es) Asignacion adaptativa de bits para un codificador y un descodificador de audio.
ATE206231T1 (de) Nachrichtenübertragungssystem und -verfahren, insbesondere für die aktualisierung der daten in elektronischen preisschildern
PT1423847E (pt) Reconstrucao de componentes de frequencia elevada
AR009834A1 (es) Aparato y metodo de procesamiento de datos para el procesamiento de datos de una senal de audio
KR910008975A (ko) 오디오 신호 처리 방법
ES2164414T3 (es) Metodo y aparato para codificacion de audio.
MX9301511A (es) Metodo y aparato para estimar los parametros de peso de la señal en un receptor de diversidades
DE60310716T8 (de) System für die audiokodierung mit füllung von spektralen lücken
BR9813708A (pt) Processo e aparelho para determinar um ponto de operação de um amplicifador não linear de um canal de comunicação.
MY120960A (en) Coding for higher-level modulation
NO965128D0 (no) Elektronisk lagringsmedium og fremgangsmåte og system for datatransmisjon
CA2058775A1 (en) Transmission and decoding of tree-encoder parameters of analogue signals
KR950035098A (ko) 디서 아날로그 디지탈 변환기를 테스트하는 장치 및 방법
BR0006091A (pt) Método e aparelho para modular dados digitais
SE0000699D0 (sv) Krets och förfarande för dämpning av brus i en dataomvandlare
ATE321272T1 (de) Datenkompensierende leistungsmessung
AR005991A1 (es) Particulas de detergente
DK1190371T3 (da) Billedbinariseringsfremgangsmåde
DK0635177T3 (da) Fremgangsmåde til overførsel og/eller lagring af digitaliserede, datareducerede audiosignaler
ES2162846T3 (es) Sistema de transmision numerica con ensanchamiento de espectro obtenido por codificacion seudoaleatoria a baja frecuencia de la informacion util y procedimiento de ensanchamiento de espectro utilizado en tal sistema.
KR970068186A (ko) 다중-비트 신호에 더해진 부데이터를 갖는 다중-비트 신호를 1비트 신호로 변환하기 위한 신호처리장치
ES2176947T3 (es) Compresion de audio.
ATE44330T1 (de) Verfahren zur aufzeichnung eines pcm-tonsignals mit kompensation von signalstoerungen.