DE3688783D1 - Digital-analog-wandler. - Google Patents

Digital-analog-wandler.

Info

Publication number
DE3688783D1
DE3688783D1 DE8686308538T DE3688783T DE3688783D1 DE 3688783 D1 DE3688783 D1 DE 3688783D1 DE 8686308538 T DE8686308538 T DE 8686308538T DE 3688783 T DE3688783 T DE 3688783T DE 3688783 D1 DE3688783 D1 DE 3688783D1
Authority
DE
Germany
Prior art keywords
digital
analog converter
analog
converter
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
DE8686308538T
Other languages
English (en)
Other versions
DE3688783T2 (de
Inventor
Kazumitsu Miyakoshi
Mitsuyoshi Nakaya
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.)
Sharp Corp
Original Assignee
Sharp 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
Priority claimed from JP29845185A external-priority patent/JPS62152223A/ja
Priority claimed from JP9296086A external-priority patent/JPS62248311A/ja
Priority claimed from JP12303486A external-priority patent/JPS62277814A/ja
Application filed by Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE3688783D1 publication Critical patent/DE3688783D1/de
Publication of DE3688783T2 publication Critical patent/DE3688783T2/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
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M3/324—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement
    • H03M3/346—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by suppressing active signals at predetermined times, e.g. muting, using non-overlapping clock phases
    • 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
    • H03M3/50—Digital/analogue converters using delta-sigma modulation as an intermediate step
    • 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
    • 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)
  • Analogue/Digital Conversion (AREA)
DE86308538T 1985-12-25 1986-10-31 Digital-Analog-Wandler. Expired - Fee Related DE3688783T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP29845185A JPS62152223A (ja) 1985-12-25 1985-12-25 Ｄａコンバ−タ・システム
JP9296086A JPS62248311A (ja) 1986-04-21 1986-04-21 Ｄａコンバ−タシステム
JP12303486A JPS62277814A (ja) 1986-05-26 1986-05-26 Ｄａコンバ−タ・システム

Publications (2)

Publication Number Publication Date
DE3688783D1 true DE3688783D1 (de) 1993-09-02
DE3688783T2 DE3688783T2 (de) 1994-01-05

Family

ID=27307158

Family Applications (1)

Application Number Title Priority Date Filing Date
DE86308538T Expired - Fee Related DE3688783T2 (de) 1985-12-25 1986-10-31 Digital-Analog-Wandler.

Country Status (3)

Country Link
US (1) US4812815A (de)
EP (1) EP0227267B1 (de)
DE (1) DE3688783T2 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6439122A (en) * 1987-08-05 1989-02-09 Toshiba Corp Digital data demodulating circuit
GB2222495B (en) * 1988-09-06 1992-07-15 Plessey Co Plc Analog to digital converters
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
US5479439A (en) * 1991-04-16 1995-12-26 Adtran Analog service channel port for digital interface
US5434694A (en) * 1992-03-31 1995-07-18 Yokogawa Electric Corporation Signal isolating device
JP3238587B2 (ja) * 1994-12-27 2001-12-17 バー−ブラウン・コーポレーション 自動ミューティング機能を備えたオーバーサンプリング型デジタル−アナログ変換器
JPH09153814A (ja) * 1995-11-30 1997-06-10 Sony Corp ディジタル信号処理装置及び記録装置
US6111680A (en) * 1997-12-01 2000-08-29 Ebara Corporation Transmitting a signal using duty cycle modulation
JP4454109B2 (ja) * 2000-06-14 2010-04-21 日本テキサス・インスツルメンツ株式会社 パルス密度変調信号（ｐｄｍ）のデジタル−アナログ変換処理におけるｓｎ比改善の方法および装置
JP2004214998A (ja) * 2003-01-06 2004-07-29 Denon Ltd デジタルアンプ
FR2892244A1 (fr) * 2005-10-18 2007-04-20 St Microelectronics Sa Circuit de detection de coherence d'une sequence pdm dans un convertisseur analogique
US7183959B1 (en) * 2005-11-30 2007-02-27 Honeywell International, Inc. Method and system for implementing a reduced latency, wideband pulse density modulation digital to analog converter
US20070293178A1 (en) * 2006-05-23 2007-12-20 Darin Milton Antenna Control
CN101859567B (zh) * 2009-04-10 2012-05-30 比亚迪股份有限公司 一种语音背景噪声的消除方法和装置
US9048863B2 (en) * 2013-03-12 2015-06-02 Microchip Technology Incorporated Pulse density digital-to-analog converter with slope compensation function
US9900017B1 (en) * 2017-04-12 2018-02-20 Apple Inc. Digital to analog conversion using semi-digital FIR filter
CN112823359A (zh) * 2019-01-14 2021-05-18 光子智能股份有限公司 光电计算系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1580447A (en) * 1976-12-01 1980-12-03 Post Office Code converters
US4142066A (en) * 1977-12-27 1979-02-27 Bell Telephone Laboratories, Incorporated Suppression of idle channel noise in delta modulation systems
US4399564A (en) * 1980-02-19 1983-08-16 The United States Of America As Represented By The Secretary Of The Navy Fiber optic system for transmission of video signals by pulse-frequency-modulation
DE3128182A1 (de) * 1981-07-16 1983-02-03 Siemens AG, 1000 Berlin und 8000 München Programmzufuehrungssystem
US4484178A (en) * 1982-06-22 1984-11-20 International Business Machines Corporation Digital-to-analog converter

Also Published As

Publication number Publication date
DE3688783T2 (de) 1994-01-05
EP0227267B1 (de) 1993-07-28
EP0227267A2 (de) 1987-07-01
EP0227267A3 (en) 1989-04-12
US4812815A (en) 1989-03-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee