FR2373193A1 - Procede pour convertir un signal a modulation par impulsions codees en signal analogique et dispositif pour la mise en oeuvre dudit procede - Google Patents

Procede pour convertir un signal a modulation par impulsions codees en signal analogique et dispositif pour la mise en oeuvre dudit procede

Info

Publication number
FR2373193A1
FR2373193A1 FR7736057A FR7736057A FR2373193A1 FR 2373193 A1 FR2373193 A1 FR 2373193A1 FR 7736057 A FR7736057 A FR 7736057A FR 7736057 A FR7736057 A FR 7736057A FR 2373193 A1 FR2373193 A1 FR 2373193A1
Authority
FR
France
Prior art keywords
signal
modulation
coded pulses
converting
implementation
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.)
Granted
Application number
FR7736057A
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English (en)
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FR2373193B1 (fr
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Post Office
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Post Office
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Publication date
Application filed by Post Office filed Critical Post Office
Publication of FR2373193A1 publication Critical patent/FR2373193A1/fr
Application granted granted Critical
Publication of FR2373193B1 publication Critical patent/FR2373193B1/fr
Granted 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
    • H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M7/3028—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
    • G06F7/68—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using pulse rate multipliers or dividers pulse rate multipliers or dividers per se
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Analogue/Digital Conversion (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Convertisseur numérique-analogique utilisant une technique de quantification à deux niveaux. Pour la conversion de signaux PCM en code à densité d'impulsion, on utilise des additionneurs et registres logiques classiques disposés en boucle de rétroaction où un signal d approximation qui constitue le signal codé en densité d'impulsions, est comparé de manière répétitive avec le signal PCM et la différence est accumulée; à la fin de chaque opération, le total est testé et la valeur du signal d'approximation pour le cycle suivant est choisie de manière à réduire le total accumulé. Application notamment à la conversion des signaux de communication téléphonique à modulation linéaire par impulsions codées en signaux analogiques.
FR7736057A 1976-12-01 1977-11-30 Procede pour convertir un signal a modulation par impulsions codees en signal analogique et dispositif pour la mise en oeuvre dudit procede Granted FR2373193A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB50096/76A GB1580447A (en) 1976-12-01 1976-12-01 Code converters

Publications (2)

Publication Number Publication Date
FR2373193A1 true FR2373193A1 (fr) 1978-06-30
FR2373193B1 FR2373193B1 (fr) 1983-01-28

Family

ID=10454647

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7736057A Granted FR2373193A1 (fr) 1976-12-01 1977-11-30 Procede pour convertir un signal a modulation par impulsions codees en signal analogique et dispositif pour la mise en oeuvre dudit procede

Country Status (8)

Country Link
US (1) US4209773A (fr)
JP (1) JPS6026330B2 (fr)
CA (1) CA1113609A (fr)
DE (1) DE2753616A1 (fr)
FR (1) FR2373193A1 (fr)
GB (1) GB1580447A (fr)
NL (1) NL188132C (fr)
SE (1) SE428256B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443768A1 (fr) * 1978-12-05 1980-07-04 Int Standard Electric Corp Convertisseur analogique numerique
FR2543380A1 (fr) * 1983-03-24 1984-09-28 Labo Cent Telecommunicat Procede et dispositif de transcodage d'un signal numerique mic et application au codage analogique-numerique d'un signal analogique a large bande

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB2107949B (en) * 1981-10-15 1985-04-11 Standard Telephones Cables Ltd Digital decoder
US4542369A (en) * 1982-08-19 1985-09-17 Victor Company Of Japan, Ltd. Digital-to-analog converting device
USRE34660E (en) * 1983-07-29 1994-07-12 Burr-Brown Corporation Apparatus and methods for digital-to-analog conversion using modified LSB switching
GB8427325D0 (en) * 1984-10-29 1984-12-05 Plessey Co Plc Digital to analogue conversion
JPH0697743B2 (ja) * 1985-04-17 1994-11-30 株式会社日立製作所 オ−バサンプル形ｄ／ａ変換器
US4812815A (en) * 1985-12-25 1989-03-14 Sharp Kabushiki Kaisha Digital-to-analog converter system
US4755794A (en) * 1987-07-23 1988-07-05 American Telephone And Telegraph Company, At&T Bell Laboratories Digital-to-digital code converter
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
DE3780640T2 (de) * 1987-10-19 1993-03-11 Ibm Offset-korrekturschaltung fuer eine sigma-delta-kodierungsvorrichtung.
JP2716140B2 (ja) * 1988-04-04 1998-02-18 富士通株式会社 コード変換器及びエンコーダ装置
US4901077A (en) * 1988-04-18 1990-02-13 Thomson Consumer Electronics, Inc. Sigma-delta modulator for D-to-A converter
DE3934215A1 (de) * 1989-10-13 1991-04-18 Rheydt Kabelwerk Ag Digital/analogsystem
US5101204A (en) * 1990-03-26 1992-03-31 Burr-Brown Corporation Interpolation DAC and method
EP1024348B1 (fr) * 1999-01-28 2011-07-27 Denso Corporation Méthode de suppression de bruit à basse fréquence et circuit CMOS
JP2006521712A (ja) 2003-03-28 2006-09-21 イーエスエス テクノロジー インコーポレイテッド ビット・バイナリ・レート・マルチプライヤで構成されるバイカッド型フィルタ回路
US7456766B2 (en) * 2006-07-19 2008-11-25 Qualcomm Incorporated Sigma-delta modulation with offset
JP2009534874A (ja) * 2006-01-11 2009-09-24 クゥアルコム・インコーポレイテッド オフセットを用いるシグマ−デルタ変調
RU181022U1 (ru) * 2018-04-12 2018-07-03 Федеральное государственное бюджетное образовательное учреждение высшего образования "МИРЭА - Российский технологический университет" Многовходовой цифровой сумматор импульсных потоков

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603773A (en) * 1969-08-28 1971-09-07 Vernitron Corp Digital pulse rate generator
US3668560A (en) * 1970-07-09 1972-06-06 Research Corp Pulse-width frequency modulation device
US3772678A (en) * 1970-06-10 1973-11-13 Univ Sherbrooke Converter from pulse code modulation to delta modulation
GB1444216A (en) * 1975-02-20 1976-07-28 Standard Telephones Cables Ltd D/a converter for pcm

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292173A (en) * 1963-09-25 1966-12-13 Gen Motors Corp Digital decoding apparatus
US3757261A (en) * 1972-02-11 1973-09-04 Collins Radio Co Integration and filtration circuit apparatus
US4006475A (en) * 1973-12-04 1977-02-01 Bell Telephone Laboratories, Incorporated Digital-to-analog converter with digitally distributed amplitude supplement
US4079373A (en) * 1976-08-19 1978-03-14 Rockwell International Corporation Digital-to-analog conversion apparatus using temperature compensated feedback output amplifier
US4086656A (en) * 1976-10-21 1978-04-25 Rockwell International Corporation Analog-to-digital integrating apparatus with pulse density conversion prior to accumulation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603773A (en) * 1969-08-28 1971-09-07 Vernitron Corp Digital pulse rate generator
US3772678A (en) * 1970-06-10 1973-11-13 Univ Sherbrooke Converter from pulse code modulation to delta modulation
US3668560A (en) * 1970-07-09 1972-06-06 Research Corp Pulse-width frequency modulation device
GB1444216A (en) * 1975-02-20 1976-07-28 Standard Telephones Cables Ltd D/a converter for pcm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443768A1 (fr) * 1978-12-05 1980-07-04 Int Standard Electric Corp Convertisseur analogique numerique
FR2543380A1 (fr) * 1983-03-24 1984-09-28 Labo Cent Telecommunicat Procede et dispositif de transcodage d'un signal numerique mic et application au codage analogique-numerique d'un signal analogique a large bande

Also Published As

Publication number Publication date
SE7713519L (sv) 1978-06-02
NL7713163A (nl) 1978-06-05
SE428256B (sv) 1983-06-13
JPS5368966A (en) 1978-06-19
NL188132B (nl) 1991-11-01
CA1113609A (fr) 1981-12-01
US4209773A (en) 1980-06-24
NL188132C (nl) 1992-04-01
DE2753616C2 (fr) 1987-01-29
JPS6026330B2 (ja) 1985-06-22
DE2753616A1 (de) 1978-06-08
FR2373193B1 (fr) 1983-01-28
GB1580447A (en) 1980-12-03

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