CA2274637A1 - Signal processing method and device - Google Patents

Signal processing method and device Download PDF

Info

Publication number
CA2274637A1
CA2274637A1 CA002274637A CA2274637A CA2274637A1 CA 2274637 A1 CA2274637 A1 CA 2274637A1 CA 002274637 A CA002274637 A CA 002274637A CA 2274637 A CA2274637 A CA 2274637A CA 2274637 A1 CA2274637 A1 CA 2274637A1
Authority
CA
Canada
Prior art keywords
signal
sigma
modulator
delta modulator
bit
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.)
Abandoned
Application number
CA002274637A
Other languages
English (en)
French (fr)
Inventor
Arhippa Kovanen
Lauri Lipasti
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.)
Atmel Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2274637A1 publication Critical patent/CA2274637A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from 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)
  • Analogue/Digital Conversion (AREA)
CA002274637A 1997-10-09 1998-08-26 Signal processing method and device Abandoned CA2274637A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI973919A FI103745B1 (fi) 1997-10-09 1997-10-09 Signaalinkäsittelymenetelmä ja -laite
FI973919 1997-10-09
PCT/US1998/017743 WO1999020004A1 (en) 1997-10-09 1998-08-26 Signal processing method and device

Publications (1)

Publication Number Publication Date
CA2274637A1 true CA2274637A1 (en) 1999-04-22

Family

ID=8549695

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002274637A Abandoned CA2274637A1 (en) 1997-10-09 1998-08-26 Signal processing method and device

Country Status (11)

Country Link
EP (1) EP1021876A4 (no)
JP (1) JP2002510455A (no)
KR (1) KR20010012348A (no)
CN (1) CN1112777C (no)
CA (1) CA2274637A1 (no)
FI (1) FI103745B1 (no)
HK (1) HK1025695A1 (no)
MY (1) MY133001A (no)
NO (1) NO992777L (no)
TW (1) TW408531B (no)
WO (1) WO1999020004A1 (no)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1195353C (zh) * 2001-12-03 2005-03-30 方虎堂 脉冲面积调制数字功率处理方法及装置
US6606044B2 (en) 2002-01-02 2003-08-12 Motorola, Inc. Method and apparatus for generating a pulse width modulated signal
KR101853818B1 (ko) 2011-07-29 2018-06-15 삼성전자주식회사 오디오 신호 처리 방법 및 그에 따른 오디오 신호 처리 장치
EP2927805A1 (en) * 2014-03-31 2015-10-07 Nxp B.V. Control system
TWI559202B (zh) * 2014-10-01 2016-11-21 義隆電子股份有限公司 電容式觸控裝置及其刺激訊號產生電路與方法
CN110310635B (zh) * 2019-06-24 2022-03-22 Oppo广东移动通信有限公司 语音处理电路及电子设备

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01204528A (ja) * 1988-02-10 1989-08-17 Fujitsu Ltd Ａ／ｄ変換器
DE69107059T2 (de) * 1990-01-31 1995-08-24 Analog Devices Inc Sigma-delta-modulator.
US5245344A (en) * 1991-01-15 1993-09-14 Crystal Semiconductor High order switched-capacitor filter with dac input
US5625358A (en) * 1993-09-13 1997-04-29 Analog Devices, Inc. Digital phase-locked loop utilizing a high order sigma-delta modulator
US5442353A (en) * 1993-10-25 1995-08-15 Motorola, Inc. Bandpass sigma-delta analog-to-digital converter (ADC), method therefor, and receiver using same
US5748126A (en) * 1996-03-08 1998-05-05 S3 Incorporated Sigma-delta digital-to-analog conversion system and process through reconstruction and resampling
JPH09266447A (ja) * 1996-03-28 1997-10-07 Sony Corp 語長変換装置及びデータ処理装置

Also Published As

Publication number Publication date
CN1256037A (zh) 2000-06-07
NO992777L (no) 1999-07-28
CN1112777C (zh) 2003-06-25
KR20010012348A (ko) 2001-02-15
MY133001A (en) 2007-10-31
EP1021876A1 (en) 2000-07-26
FI103745B (fi) 1999-08-31
WO1999020004A1 (en) 1999-04-22
TW408531B (en) 2000-10-11
FI103745B1 (fi) 1999-08-31
FI973919A (fi) 1999-04-10
JP2002510455A (ja) 2002-04-02
NO992777D0 (no) 1999-06-08
EP1021876A4 (en) 2003-05-02
FI973919A0 (fi) 1997-10-09
HK1025695A1 (en) 2000-11-17

Similar Documents

Publication Publication Date Title
US7183957B1 (en) Signal processing system with analog-to-digital converter using delta-sigma modulation having an internal stabilizer loop
US7696913B2 (en) Signal processing system using delta-sigma modulation having an internal stabilizer path with direct output-to-integrator connection
EP0617516B1 (en) Sigma-delta modulator with improved tone rejection and method therefor
EP0643488B1 (en) Sigma-delta analog-to-digital converter with filtration having controlled pole-zero locations, and apparatus therefor
JP3138011B2 (ja) マルチプル・シグマ−デルタ変調器を有するアナログ・デジタル信号変換器
JP3886220B2 (ja) 中心周波数が同調可能なフィードフォーワード帯域デルタ−シグマ変換器
US20070018866A1 (en) Quantizer overload prevention for feed-back type delta-sigma modulators
US7453382B2 (en) Method and apparatus for A/D conversion
EP0494738B1 (en) A sigma-delta modulator for a D/A converter with dither signal
KR20010013111A (ko) 시그마-델타 변조기에서 주기적 잡음을 감소하는 장치 및방법
US6600789B1 (en) Signal processing method and device
JP2004500745A (ja) カスケード・シグマデルタ変調器
CA2274637A1 (en) Signal processing method and device
Gourgue et al. A bandpass subsampled delta-sigma modulator for narrowband cellular mobile communications
WO1999049578A1 (en) Tone modulation in delta-sigma dac using square wave dither
EP1678832B1 (en) Delta sigma modulator with integral decimation
JP2006503472A (ja) データコンバータ
Friedman Oversampled data conversion techniques
PATEL Design and implementation of sigma–delta digital to analog converter
Fitzgibbon et al. Hardware reduction in delta-sigma digital-to-analog converters via bus-splitting
Torkzadeh et al. An elaborate design and implementation of a 3rd order sigma-delta modulator ADC for wideband signals
Yates One-Bit Delta Sigma D/A Conversion Part I: Theory
JPH04364612A (ja) オーバーサンプリングａ／ｄ変換回路
JPH10126270A (ja) 高次シグマ・デルタ変調器

Legal Events

Date Code Title Description
EEER Examination request
FZDE Dead