FI910116L - sigma-delta-modulator foer d/a-omvandlare - Google Patents

sigma-delta-modulator foer d/a-omvandlare Download PDF

Info

Publication number: FI910116L
Authority: FI; Finland
Prior art keywords: omvandlare; foer; modulator; delta; sigma
Prior art date: 1991-01-09

Application number

FI910116A

Other languages

English (en)

Other versions

FI910116A0 (fi

FI88980B (fi

FI88980C (fi

Inventor

Teppo Karema

Hannu Tenhunen

Tapani Ritoniemi

Original Assignee

Fincitec Oy

Micronas Oy

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.)

1991-01-09

Filing date

1991-01-09

Publication date

1992-07-10

1991-01-09 Application filed by Fincitec Oy, Micronas Oy filed Critical Fincitec Oy

1991-01-09 Priority to FI910116A priority Critical patent/FI88980C/fi

1991-01-09 Publication of FI910116A0 publication Critical patent/FI910116A0/fi

1992-01-06 Priority to EP92300063A priority patent/EP0494738B1/en

1992-01-06 Priority to DE69212337T priority patent/DE69212337T2/de

1992-01-09 Priority to US07/818,522 priority patent/US5191331A/en

1992-01-09 Priority to JP04002017A priority patent/JP3130105B2/ja

1992-07-10 Publication of FI910116L publication Critical patent/FI910116L/fi

1993-04-15 Publication of FI88980B publication Critical patent/FI88980B/fi

1993-07-26 Application granted granted Critical

1993-07-26 Publication of FI88980C publication Critical patent/FI88980C/fi

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
- H03M7/3006—Compensating for, or preventing of, undesired influence of physical parameters
- H03M7/3008—Compensating for, or preventing of, undesired influence of physical parameters by averaging out the errors, e.g. using dither
- 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)

FI910116A 1991-01-09 1991-01-09 Sigma-delta-modulator foer d/a-omvandlare FI88980C (fi)

Priority Applications (5)

Application Number	Priority Date	Filing Date	Title
FI910116A FI88980C (fi)	1991-01-09	1991-01-09	Sigma-delta-modulator foer d/a-omvandlare
EP92300063A EP0494738B1 (en)	1991-01-09	1992-01-06	A sigma-delta modulator for a D/A converter with dither signal
DE69212337T DE69212337T2 (de)	1991-01-09	1992-01-06	Sigma-Delta-Modulator für einen Digital/Analog-Umsetzer mit Wackelsignal
US07/818,522 US5191331A (en)	1991-01-09	1992-01-09	Sigma-delta modulator for a D/A converter with pseudorandom jitter signal insertion
JP04002017A JP3130105B2 (ja)	1991-01-09	1992-01-09	Ｄ／ａ変換器用シグマ・デルタ変調器

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FI910116A FI88980C (fi)	1991-01-09	1991-01-09	Sigma-delta-modulator foer d/a-omvandlare
FI910116		1991-01-09

Publications (4)

Publication Number	Publication Date
FI910116A0 FI910116A0 (fi)	1991-01-09
FI910116L true FI910116L (fi)	1992-07-10
FI88980B FI88980B (fi)	1993-04-15
FI88980C FI88980C (fi)	1993-07-26

Family

ID=8531713

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI910116A FI88980C (fi)	1991-01-09	1991-01-09	Sigma-delta-modulator foer d/a-omvandlare

Country Status (5)

Country	Link
US (1)	US5191331A (fi)
EP (1)	EP0494738B1 (fi)
JP (1)	JP3130105B2 (fi)
DE (1)	DE69212337T2 (fi)
FI (1)	FI88980C (fi)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5508647A (en) *	1992-06-19	1996-04-16	Nec Corporation	Noise shaper for preventing noise in low frequency band
US5305004A (en) *	1992-09-29	1994-04-19	Texas Instruments Incorporated	Digital to analog converter for sigma delta modulator
FI96649C (fi) *	1994-06-07	1996-07-25	Fincitec Oy	Ylinäytteistetty korkeamman asteluvun modulaattori
FI98020C (fi) *	1995-06-06	1997-03-25	Nokia Mobile Phones Ltd	Digitaalisen signaalin modulointimenetelmä ja modulaattori
FI101027B (fi) *	1996-01-05	1998-03-31	Nokia Mobile Phones Ltd	Multipleksoitu signaalimuunnos
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
GB2314707B (en) *	1996-06-25	2000-01-19	Racal Res Ltd	Sigma-delta analogue-to-digital conversion circuits
JP3593805B2 (ja) *	1996-07-26	2004-11-24	ソニー株式会社	特殊効果処理装置
US6034855A (en) *	1997-05-30	2000-03-07	Lucent Technologies Inc.	Method and apparatus for attenuation of, and damage protection from, high energy electromagnetic pulses
US5999114A (en) *	1997-07-03	1999-12-07	Lucent Technologies Inc.	Dithered digital gain scalar/summer
GB2330707B (en)	1997-10-23	2001-10-24	Nokia Mobile Phones Ltd	Digital to analogue converter
FI105428B (fi)	1998-05-13	2000-08-15	Nokia Mobile Phones Ltd	Menetelmä rinnakkais-A/D-muunnoksen virheen korjaamiseksi, korjain ja rinnakkais-A/D-muunnin
FI120124B (fi)	1998-05-29	2009-06-30	Nokia Corp	Menetelmä ja piiri signaalin näytteistämiseksi suurella näytteistystaajuudella
JP3795338B2 (ja) *	2001-02-27	2006-07-12	旭化成マイクロシステム株式会社	全差動型サンプリング回路及びデルタシグマ型変調器
ITMI20020459A1 (it) *	2002-03-06	2003-09-08	St Microelectronics Srl	Randomizzatore per convertirore di tipo sigms delta
US6993544B2 (en)	2002-08-27	2006-01-31	Broadcom Corporation	Limit-cycle oscillation suppression method, system, and computer program product
GB0514677D0 (en) *	2005-07-18	2005-08-24	Queen Mary & Westfield College	Sigma delta modulators
US7176821B1 (en) *	2005-10-03	2007-02-13	Texas Instruments Incorported	Reduced area digital sigma-delta modulator
JP6148537B2 (ja) *	2013-05-29	2017-06-14	旭化成エレクトロニクス株式会社	スイッチング電源回路
US9356617B2 (en) *	2014-03-18	2016-05-31	Fairchild Semiconductor Corporation	Uniform distribution dithering in sigma-delta A/D converters

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE136554C (fi) *
DD136554A2 (de) *	1978-05-22	1979-07-11	Hans Schulz	Schaltsystem fuer hybridrechner
US4528551A (en) *	1979-11-28	1985-07-09	International Telephone And Telegraph Corporation	Digital to analog converter employing sigma-delta modulation for use in telephone systems
US4811019A (en) *	1986-05-30	1989-03-07	Shure Brothers Incorporated, Inc.	Delta modulation encoding/decoding circuitry
EP0308982B1 (en) *	1987-09-25	1995-09-06	Nec Corporation	Analog-to-digital converter having an excellent signal-to-noise ratio for small signals
US4827343A (en) *	1987-10-02	1989-05-02	North American Philips Consumer Elec. Corp.	Method and apparatus for reducing analog/digital converter requirements in picture-in-picture television circuits
US4857928A (en) *	1988-01-28	1989-08-15	Motorola, Inc.	Method and arrangement for a sigma delta converter for bandpass signals
US4901077A (en) *	1988-04-18	1990-02-13	Thomson Consumer Electronics, Inc.	Sigma-delta modulator for D-to-A converter
JP2647136B2 (ja) *	1988-05-13	1997-08-27	株式会社東芝	アナログ−デジタル変換回路
JPH02134010A (ja) *	1988-11-15	1990-05-23	Sony Corp	信号処理装置
JP3012887B2 (ja) *	1989-03-13	2000-02-28	日本テキサス・インスツルメンツ株式会社	信号変換装置

1991
- 1991-01-09 FI FI910116A patent/FI88980C/fi active
1992
- 1992-01-06 DE DE69212337T patent/DE69212337T2/de not_active Expired - Lifetime
- 1992-01-06 EP EP92300063A patent/EP0494738B1/en not_active Expired - Lifetime
- 1992-01-09 JP JP04002017A patent/JP3130105B2/ja not_active Expired - Fee Related
- 1992-01-09 US US07/818,522 patent/US5191331A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
FI910116A0 (fi)	1991-01-09
DE69212337T2 (de)	1997-01-16
DE69212337D1 (de)	1996-08-29
JP3130105B2 (ja)	2001-01-31
US5191331A (en)	1993-03-02
FI88980B (fi)	1993-04-15
FI88980C (fi)	1993-07-26
JPH04317224A (ja)	1992-11-09
EP0494738A3 (en)	1992-08-19
EP0494738B1 (en)	1996-07-24
EP0494738A2 (en)	1992-07-15

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Legal Events

Date	Code	Title	Description
1993-03-16	BB	Publication of examined application
1998-11-02	PC	Transfer of assignment of patent	Owner name: NOKIA MATKAPUHELIMET OY