JP2004248288A - 適応シグマ−デルタ変調器およびシグマ−デルタ変調を実施する方法 - Google Patents

適応シグマ−デルタ変調器およびシグマ−デルタ変調を実施する方法 Download PDF

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Publication number
JP2004248288A
JP2004248288A JP2004034408A JP2004034408A JP2004248288A JP 2004248288 A JP2004248288 A JP 2004248288A JP 2004034408 A JP2004034408 A JP 2004034408A JP 2004034408 A JP2004034408 A JP 2004034408A JP 2004248288 A JP2004248288 A JP 2004248288A
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Japan
Prior art keywords
input signal
sigma
quantizer
delta
digital
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Abandoned
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JP2004034408A
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English (en)
Japanese (ja)
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JP2004248288A5 (enExample
Inventor
James R Hochschild
アール、ホーチスチャイルド ジェームズ
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Texas Instruments Inc
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Texas Instruments Inc
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Publication of JP2004248288A publication Critical patent/JP2004248288A/ja
Publication of JP2004248288A5 publication Critical patent/JP2004248288A5/ja
Abandoned legal-status Critical Current

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    • 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

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
JP2004034408A 2003-02-13 2004-02-12 適応シグマ−デルタ変調器およびシグマ−デルタ変調を実施する方法 Abandoned JP2004248288A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44716003P 2003-02-13 2003-02-13
US10/453,426 US6795005B2 (en) 2003-02-13 2003-06-03 Variable, adaptive quantization in sigma-delta modulators

Publications (2)

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JP2004248288A true JP2004248288A (ja) 2004-09-02
JP2004248288A5 JP2004248288A5 (enExample) 2007-03-29

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JP2004034408A Abandoned JP2004248288A (ja) 2003-02-13 2004-02-12 適応シグマ−デルタ変調器およびシグマ−デルタ変調を実施する方法

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US (1) US6795005B2 (enExample)
JP (1) JP2004248288A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006254261A (ja) * 2005-03-14 2006-09-21 Renesas Technology Corp Σδ型ａ／ｄ変換回路を内蔵した通信用半導体集積回路
JP2012023540A (ja) * 2010-07-14 2012-02-02 Asahi Kasei Electronics Co Ltd マルチビットデルタシグマ変調器及びａｄコンバータ
JP5905825B2 (ja) * 2010-09-10 2016-04-20 日本電気株式会社 送信機、制御方法、コンピュータプログラム、およびδς変調器

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7894536B2 (en) * 2003-04-15 2011-02-22 Texas Instruments Incorporated Calibration model to mitigate data conversion errors
US6940437B2 (en) * 2003-10-31 2005-09-06 Cirrus Logic, Inc. Multibit delta-sigma modulator with variable-level quantizer
US7593483B2 (en) * 2004-05-07 2009-09-22 Broadcom Corporation Nonlinear mapping in digital-to-analog and analog-to-digital converters
US7405686B2 (en) * 2005-06-27 2008-07-29 Qualcomm Incorporated Methods and apparatus for implementing and/or using amplifiers and/or for performing various amplification related operations
US7289050B1 (en) * 2005-06-27 2007-10-30 Qualcomm Incorporated Amplification method and apparatus
US20080000431A1 (en) * 2006-06-29 2008-01-03 Stephen Longo Dog leash assembly
JP4589275B2 (ja) * 2006-07-27 2010-12-01 パナソニック株式会社 デルタシグマ変調型ｄａ変換装置
US7961125B2 (en) * 2008-10-23 2011-06-14 Microchip Technology Incorporated Method and apparatus for dithering in multi-bit sigma-delta digital-to-analog converters
US8217816B2 (en) 2010-10-18 2012-07-10 Texas Instruments Incorporated Sigma-delta modulator
KR102192627B1 (ko) 2014-04-23 2020-12-17 삼성전자주식회사 재구성형 아날로그-디지털 컨버터 및 이를 포함하는 이미지 센서
US11227615B2 (en) * 2017-09-08 2022-01-18 Sony Corporation Sound processing apparatus and sound processing method
JP7139588B2 (ja) * 2017-09-22 2022-09-21 カシオ計算機株式会社 変換装置、電子楽器、情報処理装置、変換方法及びプログラム
US9985646B1 (en) 2017-10-18 2018-05-29 Schweitzer Engineering Laboratories, Inc. Analog-to-digital converter verification using quantization noise properties
US10033400B1 (en) 2017-10-18 2018-07-24 Schweitzer Engineering Laboratories, Inc. Analog-to-digital converter verification using quantization noise properties
US10727860B1 (en) * 2019-07-25 2020-07-28 Cirrus Logic, Inc. Increased noise performance using quantizer code suppression

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843390A (en) * 1988-02-24 1989-06-27 Motorola, Inc. Oversampled A/D converter having digital error correction
JP3012888B2 (ja) * 1989-11-24 2000-02-28 日本テキサス・インスツルメンツ株式会社 信号変調装置
US6535153B1 (en) 1999-02-04 2003-03-18 Med-El Electromedizinische Gerate Ges.M.B.H. Adaptive sigma-delta modulation with one-bit quantization
WO2002023733A2 (en) 2000-09-11 2002-03-21 Broadcom Corporation Sigma-delta digital-to-analog converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006254261A (ja) * 2005-03-14 2006-09-21 Renesas Technology Corp Σδ型ａ／ｄ変換回路を内蔵した通信用半導体集積回路
JP2012023540A (ja) * 2010-07-14 2012-02-02 Asahi Kasei Electronics Co Ltd マルチビットデルタシグマ変調器及びａｄコンバータ
JP5905825B2 (ja) * 2010-09-10 2016-04-20 日本電気株式会社 送信機、制御方法、コンピュータプログラム、およびδς変調器

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Publication number Publication date
US20040160348A1 (en) 2004-08-19
US6795005B2 (en) 2004-09-21

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