DE69127491T2 - Digitaler Requantifizierer unter Verwendung von mehrstufigen Rauschformern - Google Patents

Digitaler Requantifizierer unter Verwendung von mehrstufigen Rauschformern

Info

Publication number
DE69127491T2
DE69127491T2 DE69127491T DE69127491T DE69127491T2 DE 69127491 T2 DE69127491 T2 DE 69127491T2 DE 69127491 T DE69127491 T DE 69127491T DE 69127491 T DE69127491 T DE 69127491T DE 69127491 T2 DE69127491 T2 DE 69127491T2
Authority
DE
Germany
Prior art keywords
requantifier
digital
stage noise
noise shapers
shapers
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 - Fee Related
Application number
DE69127491T
Other languages
English (en)
Other versions
DE69127491D1 (de
Inventor
Tetsuhiko Kaneaki
Tsuyoshi Takayama
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority claimed from JP9086890A external-priority patent/JPH0779253B2/ja
Priority claimed from JP9242090A external-priority patent/JPH0779255B2/ja
Priority claimed from JP13440490A external-priority patent/JPH082024B2/ja
Priority claimed from JP16724390A external-priority patent/JPH0779259B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE69127491D1 publication Critical patent/DE69127491D1/de
Application granted granted Critical
Publication of DE69127491T2 publication Critical patent/DE69127491T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H03M7/3015—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
    • H03M7/3022—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having multiple quantisers arranged in cascaded loops, each of the second and further loops processing the quantisation error of the loop preceding it, i.e. multiple stage noise shaping [MASH] type
    • 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
    • H03M7/3042—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 being of the error feedback type, i.e. having loop filter stages in the feedback path only
DE69127491T 1990-04-05 1991-04-05 Digitaler Requantifizierer unter Verwendung von mehrstufigen Rauschformern Expired - Fee Related DE69127491T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP9086890A JPH0779253B2 (ja) 1990-04-05 1990-04-05 量子化器
JP9242090A JPH0779255B2 (ja) 1990-04-06 1990-04-06 量子化器
JP13440490A JPH082024B2 (ja) 1990-05-24 1990-05-24 量子化器
JP16724390A JPH0779259B2 (ja) 1990-06-25 1990-06-25 量子化器

Publications (2)

Publication Number Publication Date
DE69127491D1 DE69127491D1 (de) 1997-10-09
DE69127491T2 true DE69127491T2 (de) 1998-01-08

Family

ID=27467825

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69127491T Expired - Fee Related DE69127491T2 (de) 1990-04-05 1991-04-05 Digitaler Requantifizierer unter Verwendung von mehrstufigen Rauschformern

Country Status (3)

Country Link
US (1) US5124703A (de)
EP (1) EP0450984B1 (de)
DE (1) DE69127491T2 (de)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE465144B (sv) * 1990-06-26 1991-07-29 Ericsson Ge Mobile Communicat Saett och anordning foer behandling av en analog signal
GB9109637D0 (en) * 1991-05-03 1991-06-26 Marconi Gec Ltd Analogue-to-digital and digital-to-analogue converters
JPH05167891A (ja) * 1991-12-17 1993-07-02 Sony Corp ２次元ノイズシェーピングフイルタ回路
US5187482A (en) * 1992-03-02 1993-02-16 General Electric Company Delta sigma analog-to-digital converter with increased dynamic range
US5530722A (en) * 1992-10-27 1996-06-25 Ericsson Ge Mobile Communications Inc. Quadrature modulator with integrated distributed RC filters
US5867537A (en) * 1992-10-27 1999-02-02 Ericsson Inc. Balanced tranversal I,Q filters for quadrature modulators
US5727023A (en) * 1992-10-27 1998-03-10 Ericsson Inc. Apparatus for and method of speech digitizing
US5745523A (en) * 1992-10-27 1998-04-28 Ericsson Inc. Multi-mode signal processing
GB2281828B (en) * 1993-09-14 1997-08-06 Marconi Gec Ltd Analogue-to-digital converters and digital modulators
US5682161A (en) * 1996-05-20 1997-10-28 General Electric Company High-order delta sigma modulator
US5682160A (en) * 1996-05-20 1997-10-28 Ribner; David Byrd High-order delta sigma analog-to-digital converter with unit-delay integrators
JP3658859B2 (ja) * 1996-05-27 2005-06-08 ソニー株式会社 通信方法及び通信装置
GB2314707B (en) * 1996-06-25 2000-01-19 Racal Res Ltd Sigma-delta analogue-to-digital conversion circuits
US6137809A (en) * 1997-08-22 2000-10-24 Paradyne Corporation Quantization noise compensator apparatus and method
US6373417B1 (en) * 1999-02-23 2002-04-16 Cirrus Logic, Inc. Digital to analog converter using level and timing control signals to cancel noise
JP3862918B2 (ja) * 1999-06-22 2006-12-27 シャープ株式会社 フィルタ回路
US6782135B1 (en) * 2000-02-18 2004-08-24 Conexant Systems, Inc. Apparatus and methods for adaptive digital video quantization
JP4357083B2 (ja) * 2000-06-01 2009-11-04 株式会社ルネサステクノロジ デルタシグマモジュレータおよびａｄコンバータ
US6407689B1 (en) * 2000-11-01 2002-06-18 Qualcomm, Incorporated Method and apparatus for controlling stages of a multi-stage circuit
US6920182B2 (en) * 2001-01-09 2005-07-19 Microtune (Texas), L.P. Delta-sigma modulator system and method
US6724332B1 (en) * 2002-08-13 2004-04-20 Cirrus Logic, Inc. Noise shaping circuits and methods with feedback steering overload compensation and systems using the same
US7259704B2 (en) * 2003-03-28 2007-08-21 Ess Technology, Inc. System and method for compensating for error in a sigma delta circuit
US7209067B1 (en) 2005-12-08 2007-04-24 Cirrus Logic, Inc. Extended dynamic range consecutive edge modulation (CEM) method and apparatus
JP4788353B2 (ja) * 2006-01-20 2011-10-05 パナソニック株式会社 多段型ノイズシェーピング型量子化器
JP4788422B2 (ja) * 2006-03-20 2011-10-05 パナソニック株式会社 ノイズシェーピング型量子化器
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
US7460046B2 (en) * 2006-12-22 2008-12-02 Infineon Technologies Ag Sigma-delta modulators
JP4237230B2 (ja) * 2007-01-22 2009-03-11 パナソニック株式会社 パルス幅変調方法およびこれを用いたデジタル−アナログ変換器
US7609188B2 (en) * 2007-11-21 2009-10-27 Infineon Technologies Ag Multi-standard analog-to-digital data conversion
US7928867B2 (en) * 2009-08-31 2011-04-19 Infineon Technologies Ag Analog to digital converter with digital filter
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
US10033400B1 (en) 2017-10-18 2018-07-24 Schweitzer Engineering Laboratories, Inc. Analog-to-digital converter verification using quantization noise properties
US9985646B1 (en) 2017-10-18 2018-05-29 Schweitzer Engineering Laboratories, Inc. Analog-to-digital converter verification using quantization noise properties
US10666286B1 (en) * 2019-01-31 2020-05-26 Avago Technologies International Sales Pte. Limited Partitioned delta-sigma modulator for high-speed applications

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4704600A (en) * 1985-02-04 1987-11-03 Nippon Telegraph And Telephone Corporation Oversampling converter
JPH0683150B2 (ja) * 1987-02-26 1994-10-19 日本電信電話株式会社 量子化器
JPS63248222A (ja) * 1987-04-03 1988-10-14 Nippon Telegr & Teleph Corp <Ntt> デルタ・シグマ形ａ／ｄ変換器
JP2543095B2 (ja) * 1987-09-14 1996-10-16 松下電器産業株式会社 オ―バ―サンプリング型ｄ／ａ変換器
JPH01241225A (ja) * 1988-03-23 1989-09-26 Hitachi Ltd 補間形ａ／ｄ変換器
JPH07109991B2 (ja) * 1989-06-05 1995-11-22 日本ビクター株式会社 ノイズシェーピング型再量子化回路

Also Published As

Publication number Publication date
DE69127491D1 (de) 1997-10-09
EP0450984A3 (en) 1992-05-06
US5124703A (en) 1992-06-23
EP0450984B1 (de) 1997-09-03
EP0450984A2 (de) 1991-10-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP

8339 Ceased/non-payment of the annual fee