FR2449364B1 - - Google Patents
Info
- Publication number
- FR2449364B1 FR2449364B1 FR8003270A FR8003270A FR2449364B1 FR 2449364 B1 FR2449364 B1 FR 2449364B1 FR 8003270 A FR8003270 A FR 8003270A FR 8003270 A FR8003270 A FR 8003270A FR 2449364 B1 FR2449364 B1 FR 2449364B1
- Authority
- FR
- France
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792906072 DE2906072A1 (de) | 1979-02-16 | 1979-02-16 | Verfahren und einrichtung zur steuerung einer nutzschallquelle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2449364A1 FR2449364A1 (fr) | 1980-09-12 |
| FR2449364B1 true FR2449364B1 (US06818201-20041116-C00086.png) | 1983-05-27 |
Family
ID=6063127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8003270A Granted FR2449364A1 (fr) | 1979-02-16 | 1980-02-14 | Procede et agencement de commande d'une source de son utile |
Country Status (5)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2257317A (en) * | 1991-06-26 | 1993-01-06 | Damian Rupert Lindley | Automatic volume control for car stereo |
| EP1744450A1 (en) * | 2005-07-14 | 2007-01-17 | Harman Becker Automotive Systems GmbH | Electronic device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520915A (en) * | 1938-11-04 | 1940-05-07 | Kolster Brandes Ltd | Improvements in or relating to sound reproducing apparatus such as radio receivers |
| JPS4940048A (US06818201-20041116-C00086.png) * | 1972-08-16 | 1974-04-15 | ||
| GB1518574A (en) * | 1976-06-02 | 1978-07-19 | Mueller U | Sound reproducing system |
-
1979
- 1979-02-16 DE DE19792906072 patent/DE2906072A1/de not_active Withdrawn
-
1980
- 1980-02-07 GB GB8004079A patent/GB2042295A/en not_active Withdrawn
- 1980-02-12 IT IT19849/80A patent/IT1140556B/it active
- 1980-02-14 FR FR8003270A patent/FR2449364A1/fr active Granted
- 1980-02-15 JP JP1669780A patent/JPS55113097A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2906072A1 (de) | 1980-08-21 |
| IT8019849A0 (it) | 1980-02-12 |
| IT1140556B (it) | 1986-10-01 |
| GB2042295A (en) | 1980-09-17 |
| FR2449364A1 (fr) | 1980-09-12 |
| JPS55113097A (en) | 1980-09-01 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |