FR2458178A1 - Appareil et procede d'attenuation commandee par un signal, au moyen d'un convertisseur numerique-analogique - Google Patents

Appareil et procede d'attenuation commandee par un signal, au moyen d'un convertisseur numerique-analogique

Info

Publication number
FR2458178A1
FR2458178A1 FR8011916A FR8011916A FR2458178A1 FR 2458178 A1 FR2458178 A1 FR 2458178A1 FR 8011916 A FR8011916 A FR 8011916A FR 8011916 A FR8011916 A FR 8011916A FR 2458178 A1 FR2458178 A1 FR 2458178A1
Authority
FR
France
Prior art keywords
digital
signal
analog converter
group
control
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
FR8011916A
Other languages
English (en)
Other versions
FR2458178B1 (fr
Inventor
David Philip Burton
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.)
Analog Devices Inc
Original Assignee
Analog Devices Inc
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 Analog Devices Inc filed Critical Analog Devices Inc
Publication of FR2458178A1 publication Critical patent/FR2458178A1/fr
Application granted granted Critical
Publication of FR2458178B1 publication Critical patent/FR2458178B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/001—Digital control of analog signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion
    • H03M1/78—Simultaneous conversion using ladder network
    • H03M1/785—Simultaneous conversion using ladder network using resistors, i.e. R-2R ladders

Landscapes

  • Analogue/Digital Conversion (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Networks Using Active Elements (AREA)

Abstract

L'INVENTION CONCERNE UN APPAREIL ET UN PROCEDE D'ATTENUATION A LA COMMANDE D'UN SIGNAL, UTILISANT UN CONVERTISSEUR NUMERIQUE-ANALOGIQUE. UN CONVERTISSEUR NUMERIQUE-ANALOGIQUE A 17 BITS COMPORTANT UN RESEAU EN ECHELLE R2R EST COMMANDE PAR DEUX GROUPES DE SIGNAUX NUMERIQUES DE MANIERE A MODIFIER L'ATTENUATION PAR PAS DE 1,5DB DANS UNE PLAGE DE 88DB. UN CODE A 4 BITS PRODUIT A PARTIR D'UN GROUPE DE SIGNAUX EST APPLIQUE A UN GROUPE DE 4 BORNES D'ENTREE DE COMMANDE DU CONVERTISSEUR, DETERMINE PAR LE SECOND GROUPE DE SIGNAUX DE COMMANDE. L'INVENTION S'APPLIQUE NOTAMMENT A LA COMMANDE A DISTANCE D'UN EQUIPEMENT DE REPRODUCTION SONORE.
FR8011916A 1979-05-29 1980-05-29 Appareil et procede d'attenuation commandee par un signal, au moyen d'un convertisseur numerique-analogique Expired FR2458178B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4317479A 1979-05-29 1979-05-29

Publications (2)

Publication Number Publication Date
FR2458178A1 true FR2458178A1 (fr) 1980-12-26
FR2458178B1 FR2458178B1 (fr) 1988-01-29

Family

ID=21925869

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8011916A Expired FR2458178B1 (fr) 1979-05-29 1980-05-29 Appareil et procede d'attenuation commandee par un signal, au moyen d'un convertisseur numerique-analogique

Country Status (6)

Country Link
JP (1) JPS55162615A (fr)
CA (1) CA1142445A (fr)
DE (1) DE3019964A1 (fr)
FR (1) FR2458178B1 (fr)
GB (1) GB2054992B (fr)
NL (1) NL8003027A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070175A2 (fr) * 1981-07-10 1983-01-19 Sony Corporation Convertisseur analogique-numérique
EP0070734A2 (fr) * 1981-07-21 1983-01-26 Sony Corporation Convertisseur analogique-numérique
FR2577731A1 (fr) * 1985-02-20 1986-08-22 Sgs Microelettronica Spa Attenuateur du type integrable, a faible niveau de bruit et a stabilite thermique elevee
EP0443884A2 (fr) * 1990-02-23 1991-08-28 Questech Limited Appareil de traitement du signal

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6094513A (ja) * 1983-10-28 1985-05-27 Victor Co Of Japan Ltd 音量調整装置
JPS61240716A (ja) * 1985-04-17 1986-10-27 Mitsubishi Electric Corp ディジタルアナログコンバ−タ
JP6753665B2 (ja) * 2015-12-03 2020-09-09 ラピスセミコンダクタ株式会社 利得制御回路及び利得制御方法
CN114035469B (zh) * 2021-11-08 2024-04-12 中电科思仪科技股份有限公司 一种程控衰减器的通用控制***及方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1158453A (en) * 1967-03-01 1969-07-16 Marconi Co Ltd Improvements in or relating to Pulse Code Modulation Encoders and Decoders
FR2155877A1 (fr) * 1971-10-13 1973-05-25 Anvar

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT251319B (de) * 1965-01-20 1966-12-27 Ibm Oesterreich Internationale Analog-Digital- bzw. Digital-Analog-Wandler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1158453A (en) * 1967-03-01 1969-07-16 Marconi Co Ltd Improvements in or relating to Pulse Code Modulation Encoders and Decoders
FR2155877A1 (fr) * 1971-10-13 1973-05-25 Anvar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070175A2 (fr) * 1981-07-10 1983-01-19 Sony Corporation Convertisseur analogique-numérique
EP0070175A3 (en) * 1981-07-10 1984-08-29 Sony Corporation Analog-to-digital converters
EP0070734A2 (fr) * 1981-07-21 1983-01-26 Sony Corporation Convertisseur analogique-numérique
EP0070734A3 (en) * 1981-07-21 1984-08-29 Sony Corporation Analog-to-digital converters
FR2577731A1 (fr) * 1985-02-20 1986-08-22 Sgs Microelettronica Spa Attenuateur du type integrable, a faible niveau de bruit et a stabilite thermique elevee
EP0443884A2 (fr) * 1990-02-23 1991-08-28 Questech Limited Appareil de traitement du signal
EP0443884A3 (en) * 1990-02-23 1992-01-02 Questech Limited Signal processing apparatus

Also Published As

Publication number Publication date
FR2458178B1 (fr) 1988-01-29
DE3019964A1 (de) 1980-12-11
NL8003027A (nl) 1980-12-02
GB2054992A (en) 1981-02-18
GB2054992B (en) 1983-06-22
CA1142445A (fr) 1983-03-08
JPS55162615A (en) 1980-12-18

Similar Documents

Publication Publication Date Title
US4617676A (en) Predictive communication system filtering arrangement
US4710747A (en) Method and apparatus for improving the accuracy and resolution of an analog-to-digital converter (ADC)
FR2458178A1 (fr) Appareil et procede d'attenuation commandee par un signal, au moyen d'un convertisseur numerique-analogique
ES8500530A1 (es) Un dispositivo de conversion de analogico en digital.
EP0011634A1 (fr) Synthetiseur de voix
CA1076260A (fr) Appareil et methode de compression variable sans bonds de sequences de donnees emmagasinees numeriquement et de valeur absolue grandement variable, pour fins d'affichage et de controle
US4827256A (en) Sound transmission method for data way system
GB2168577B (en) System for converting a voice signal to a pitch signal
ES8102389A1 (es) Un dispositivo sintetizador digital polifonico de senales periodicas
FR2378407A1 (fr) Procede de signalisation dans un dispositif de telecommunication
KR940022242A (ko) 변조 장치 및 복조 장치
ATE73591T1 (de) Verfahren zur uebertragung eines audio-signals.
EP0309250A3 (fr) Circuit de détection à corrélation utilisable en basse fréquence
ES8704683A1 (es) Un descodificador de digital a analogico para empleo en com-binacion con un codificador
JPH07240763A (ja) 周波数偏移信号発生装置
NO852351L (no) Fremgangsmaate og innretning for omforming av et foerste deltamodulert signal med en foerste bithastighet til et andre deltamodulert signal med en andre bithastighet.
US4644476A (en) Dialing tone generation
JP2589475B2 (ja) デイジタルレベル表示装置
SU555424A1 (ru) Способ передачи речевого сигнала
JPS5866440A (ja) 波形符号化方式
SU1269182A2 (ru) Способ преобразовани печатной информации в звуковой сигнал
SU661563A1 (ru) Устройство дл воспроизведени функции
KR100296295B1 (ko) 동적으로 제어되는 곱셈기를 이용한 디지털 제어신호 생성 방법
SU1474643A1 (ru) Цифровой вычислитель функции синуса
SU1037323A1 (ru) Имитатор шумов

Legal Events

Date Code Title Description
ST Notification of lapse