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-analogiqueInfo
- 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
Links
- 230000000116 mitigating effect Effects 0.000 title 1
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.
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)
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)
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)
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)
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 |
-
1980
- 1980-05-23 NL NL8003027A patent/NL8003027A/nl not_active Application Discontinuation
- 1980-05-24 DE DE19803019964 patent/DE3019964A1/de not_active Withdrawn
- 1980-05-29 CA CA000352995A patent/CA1142445A/fr not_active Expired
- 1980-05-29 JP JP7215280A patent/JPS55162615A/ja active Pending
- 1980-05-29 FR FR8011916A patent/FR2458178B1/fr not_active Expired
- 1980-05-29 GB GB8017569A patent/GB2054992B/en not_active Expired
Patent Citations (2)
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)
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 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |