JP4454109B2 - 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 - Google Patents

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 Download PDF

Info

Publication number
JP4454109B2
JP4454109B2 JP2000178389A JP2000178389A JP4454109B2 JP 4454109 B2 JP4454109 B2 JP 4454109B2 JP 2000178389 A JP2000178389 A JP 2000178389A JP 2000178389 A JP2000178389 A JP 2000178389A JP 4454109 B2 JP4454109 B2 JP 4454109B2
Authority
JP
Japan
Prior art keywords
scale value
digital
full
signal
pdm
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
JP2000178389A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001358592A (ja
JP2001358592A5 (enExample
Inventor
茂敏 中尾
利彦 濱▲崎▼
Original Assignee
日本テキサス・インスツルメンツ株式会社
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 日本テキサス・インスツルメンツ株式会社 filed Critical 日本テキサス・インスツルメンツ株式会社
Priority to JP2000178389A priority Critical patent/JP4454109B2/ja
Priority to EP01114242A priority patent/EP1168631B1/en
Priority to DE60134916T priority patent/DE60134916D1/de
Priority to US09/880,415 priority patent/US6489909B2/en
Publication of JP2001358592A publication Critical patent/JP2001358592A/ja
Publication of JP2001358592A5 publication Critical patent/JP2001358592A5/ja
Application granted granted Critical
Publication of JP4454109B2 publication Critical patent/JP4454109B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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
    • H03M3/368—Continuously compensating for, or preventing, undesired influence of physical parameters of noise other than the quantisation noise already being shaped inherently by delta-sigma modulators
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
JP2000178389A 2000-06-14 2000-06-14 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 Expired - Fee Related JP4454109B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2000178389A JP4454109B2 (ja) 2000-06-14 2000-06-14 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
EP01114242A EP1168631B1 (en) 2000-06-14 2001-06-12 Method and apparatus for improving S/N ratio in digital-to-analog conversion of pulse density modulated (PDM) signal
DE60134916T DE60134916D1 (de) 2000-06-14 2001-06-12 Verfahren und Gerät zur Signal/Rauschverhältnisverbesserung in Digital-Analog-Wandlung eines pulsdichtemodulierten Signals
US09/880,415 US6489909B2 (en) 2000-06-14 2001-06-13 Method and apparatus for improving S/N ratio in digital-to-analog conversion of pulse density modulated (PDM) signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000178389A JP4454109B2 (ja) 2000-06-14 2000-06-14 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

Publications (3)

Publication Number Publication Date
JP2001358592A JP2001358592A (ja) 2001-12-26
JP2001358592A5 JP2001358592A5 (enExample) 2007-02-15
JP4454109B2 true JP4454109B2 (ja) 2010-04-21

Family

ID=18679823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000178389A Expired - Fee Related JP4454109B2 (ja) 2000-06-14 2000-06-14 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

Country Status (4)

Country Link
US (1) US6489909B2 (enExample)
EP (1) EP1168631B1 (enExample)
JP (1) JP4454109B2 (enExample)
DE (1) DE60134916D1 (enExample)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01172263A (ja) * 1987-12-26 1989-07-07 Inax Corp 陶磁器製品の製造方法
AU2002244265A1 (en) * 2001-07-13 2003-01-29 Cirrus Logic, Inc. Circuits, systems and methods for volume control in 1-bit digital audio systems
US7173550B1 (en) * 2001-07-13 2007-02-06 Cirrus Logic, Inc. Circuits, systems and methods for volume control in low noise 1-bit digital audio systems
US7183954B1 (en) * 2001-07-13 2007-02-27 Cirrus Logic, Inc. Circuits, systems and methods for volume control in low noise 1-bit digital audio systems
US6956919B2 (en) * 2002-11-12 2005-10-18 Cirrus Logic, Inc. Single clock data communication in direct stream digital system
US7811231B2 (en) 2002-12-31 2010-10-12 Abbott Diabetes Care Inc. Continuous glucose monitoring system and methods of use
US7062340B2 (en) * 2003-03-26 2006-06-13 Cirrus Logic, Inc. Audio data processing systems and methods utilizing high oversampling rates
US8066639B2 (en) 2003-06-10 2011-11-29 Abbott Diabetes Care Inc. Glucose measuring device for use in personal area network
US7113907B2 (en) * 2003-06-17 2006-09-26 Cirrus Logic, Inc. Circuits and methods for reducing pin count in multiple-mode integrated circuit devices
EP1718198A4 (en) 2004-02-17 2008-06-04 Therasense Inc METHOD AND SYSTEM FOR PROVIDING DATA COMMUNICATION IN A CONTINUOUS BLOOD SUGAR MONITORING AND MANAGEMENT SYSTEM
DE102004036154B3 (de) * 2004-07-26 2005-12-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur robusten Klassifizierung von Audiosignalen sowie Verfahren zu Einrichtung und Betrieb einer Audiosignal-Datenbank sowie Computer-Programm
US20060200510A1 (en) * 2005-01-31 2006-09-07 Wang Cindy C Precision cordic processor
BRPI0610905A2 (pt) * 2005-05-30 2008-12-02 Koninkl Philips Electronics Nv mÉtodos para codificar um sinal de dsd de entrada e para gerar um sinal de saÍda de dsd, codificador e decodificador de Áudio, dispositivo, sinal de Áudio codificado, e, meio de armazenagem
US7839923B2 (en) * 2005-06-22 2010-11-23 Marvell World Trade Ltd. Method and system for equalizing received signals in communications systems
US20080199894A1 (en) 2007-02-15 2008-08-21 Abbott Diabetes Care, Inc. Device and method for automatic data acquisition and/or detection
US9425747B2 (en) * 2008-03-03 2016-08-23 Qualcomm Incorporated System and method of reducing power consumption for audio playback
US7999712B2 (en) * 2009-07-30 2011-08-16 Mediatek Inc. Digital-to-analog converters and methods thereof
WO2011026147A1 (en) 2009-08-31 2011-03-03 Abbott Diabetes Care Inc. Analyte signal processing device and methods
JP5249254B2 (ja) * 2010-01-21 2013-07-31 アズビル株式会社 変調器およびδς型ｄ／ａ変換器
US8717211B2 (en) * 2010-11-30 2014-05-06 Qualcomm Incorporated Adaptive gain adjustment system
US9048863B2 (en) * 2013-03-12 2015-06-02 Microchip Technology Incorporated Pulse density digital-to-analog converter with slope compensation function
US8786477B1 (en) * 2013-03-13 2014-07-22 Texas Instruments Incorporated Digital-to-analog conversion with improved dynamic range
US9590648B2 (en) 2014-11-07 2017-03-07 John Howard La Grou Multi-path digital-to-analog converter
US9337811B1 (en) 2014-11-11 2016-05-10 Microchip Technology Incorporated Asymmetric hysteretic controllers
US9356613B1 (en) 2014-11-11 2016-05-31 Microchip Technology Incorporated Pulse density modulation digital-to-analog converter with triangle wave generation
US9871530B1 (en) 2016-12-11 2018-01-16 John Howard La Grou Multi-path analog-to-digital and digital-to-analog conversion of PDM signals
US10256782B2 (en) 2017-04-25 2019-04-09 John Howard La Grou Multi-path power amplifier

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701143A (en) * 1970-08-24 1972-10-24 Us Navy Walsh function generator
US4573188A (en) * 1982-06-10 1986-02-25 The Aerospace Corporation Digital to analog converter
US4812815A (en) * 1985-12-25 1989-03-14 Sharp Kabushiki Kaisha Digital-to-analog converter system
US4851841A (en) * 1987-10-02 1989-07-25 Crystal Semiconductor Corporation Gain scaling of oversampled analog-to-digital converters
US4973977A (en) * 1988-11-29 1990-11-27 Comlux Digital to amplitude modulated analog converter
JPH02214224A (ja) * 1989-02-14 1990-08-27 Sony Corp ディジタル・アナログ変換器
JPH02292916A (ja) * 1989-05-02 1990-12-04 Yamaha Corp Ｄ／ａ変換回路
TW304316B (enExample) * 1990-10-03 1997-05-01 Yamaha Corp
US5568142A (en) * 1994-10-20 1996-10-22 Massachusetts Institute Of Technology Hybrid filter bank analog/digital converter
JPH09153806A (ja) * 1995-11-29 1997-06-10 Sony Corp 信号処理装置
EP0790709A1 (de) * 1996-02-15 1997-08-20 STUDER Professional Audio AG Verfahren und Vorrichtung zur Wandlung eines digitalen Audiosignales
KR100219155B1 (ko) * 1996-09-11 1999-09-01 윤종용 디지탈/아날로그 변환장치
JP3457517B2 (ja) * 1997-09-12 2003-10-20 松下電器産業株式会社 Ｄ／ａ変換装置
JP3449254B2 (ja) * 1997-11-14 2003-09-22 ヤマハ株式会社 Ｄ／ａ変換装置
US6268818B1 (en) * 1998-06-24 2001-07-31 Conexant Systems, Inc. Method and apparatus for improving modulation accuracy
JP2000068835A (ja) * 1998-08-25 2000-03-03 Sony Corp デジタル−アナログ変換装置
JP4238394B2 (ja) * 1998-11-06 2009-03-18 ソニー株式会社 デジタル信号処理装置及び再生装置
US6255975B1 (en) * 1999-04-27 2001-07-03 Cirrus Logic, Inc. Circuits and methods for noise filtering in 1-bit audio applications and systems using the same
US6340940B1 (en) * 2000-07-18 2002-01-22 Cirrus Logic, Inc. Digital to analog conversion circuits and methods utilizing single-bit delta-SIGMA modulators and multiple-bit digital to analog converters

Also Published As

Publication number Publication date
US20020018013A1 (en) 2002-02-14
EP1168631A2 (en) 2002-01-02
DE60134916D1 (de) 2008-09-04
EP1168631A3 (en) 2004-09-22
JP2001358592A (ja) 2001-12-26
EP1168631B1 (en) 2008-07-23
US6489909B2 (en) 2002-12-03

Similar Documents

Publication Publication Date Title
JP4454109B2 (ja) 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
US6326912B1 (en) Analog-to-digital conversion using a multi-bit analog delta-sigma modulator combined with a one-bit digital delta-sigma modulator
JP4221302B2 (ja) パルス幅変調信号を発生する方法および装置
US6535153B1 (en) Adaptive sigma-delta modulation with one-bit quantization
US5021788A (en) Digital analog converter
JP4471931B2 (ja) オーディオ信号帯域拡張装置及び方法
WO2004064485A2 (en) Signal processing system with baseband noise modulation and noise filtering
WO2017190976A1 (en) Signal processing device and method
WO2003043197A1 (en) Sigma-delta modulation
US20030151535A1 (en) Circuits, systems and methods for volume control in 1-bit digital audio systems
JP2005518051A (ja) オーバーサンプリングされたデジタルオーディオ信号をミキシングするためのミキシングシステム
EP1162749A2 (en) Method and apparatus for digital-to-analog converting a signal modulated in the frequency domain
JP3327116B2 (ja) 信号処理装置、信号記録装置及び信号再生装置
US7212137B2 (en) Delta sigma modulator with integral decimation
JP3863115B2 (ja) デルタシグマ型マルチビットａ／ｄコンバータおよびダウンサンプリング方法
JP3438018B2 (ja) Ａ／ｄ変換装置及びｄ／ａ変換装置
JP3307197B2 (ja) Ａ／ｄコンバータ
JP2003208186A (ja) 信号処理装置、信号処理方法
JP3104105B2 (ja) 直流成分除去回路
JP3416477B2 (ja) デルタ・シグマ型ｄ／ａ変換器
JP3044846B2 (ja) Ｄ／ａ変換器
JP4391036B2 (ja) デジタル信号処理方法および処理装置
JPH04101517A (ja) Σ△変調形ａｄ変換器
JP2993457B2 (ja) オーバサンプル型ｄａコンバータ
Dutoit et al. How are bits played back from an audio CD?

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061226

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20061226

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090417

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090422

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090616

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20090928

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091117

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20091210

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091222

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20091210

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091222

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100202

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100202

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130212

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4454109

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130212

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140212

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees