FR2394420B1 - - Google Patents

Info

Publication number
FR2394420B1
FR2394420B1 FR7532839A FR7532839A FR2394420B1 FR 2394420 B1 FR2394420 B1 FR 2394420B1 FR 7532839 A FR7532839 A FR 7532839A FR 7532839 A FR7532839 A FR 7532839A FR 2394420 B1 FR2394420 B1 FR 2394420B1
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
Application number
FR7532839A
Other languages
French (fr)
Other versions
FR2394420A1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7532839A priority Critical patent/FR2394420A1/fr
Priority to DE19762646232 priority patent/DE2646232A1/de
Priority to GB4267776A priority patent/GB1561895A/en
Priority to IT6949076A priority patent/IT1071524B/it
Priority to ES452722A priority patent/ES452722A1/es
Publication of FR2394420A1 publication Critical patent/FR2394420A1/fr
Application granted granted Critical
Publication of FR2394420B1 publication Critical patent/FR2394420B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—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
FR7532839A 1975-10-28 1975-10-28 Perfectionnements aux recepteurs radiophoniques " auto-radio " Granted FR2394420A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7532839A FR2394420A1 (fr) 1975-10-28 1975-10-28 Perfectionnements aux recepteurs radiophoniques " auto-radio "
DE19762646232 DE2646232A1 (de) 1975-10-28 1976-10-13 Schallwiedergabevorrichtung
GB4267776A GB1561895A (en) 1975-10-28 1976-10-14 Motor vehicle audio apparatus
IT6949076A IT1071524B (it) 1975-10-28 1976-10-15 Dispositivo riproduttore del suono per autoveicoli particolarmente autoradio
ES452722A ES452722A1 (es) 1975-10-28 1976-10-26 Perfeccionamientos en los receptores radiofonicos montados sobre los vehiculos y denominados enronces autorradios.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7532839A FR2394420A1 (fr) 1975-10-28 1975-10-28 Perfectionnements aux recepteurs radiophoniques " auto-radio "

Publications (2)

Publication Number Publication Date
FR2394420A1 FR2394420A1 (fr) 1979-01-12
FR2394420B1 true FR2394420B1 (Sortimente) 1980-01-04

Family

ID=9161700

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7532839A Granted FR2394420A1 (fr) 1975-10-28 1975-10-28 Perfectionnements aux recepteurs radiophoniques " auto-radio "

Country Status (5)

Country Link
DE (1) DE2646232A1 (Sortimente)
ES (1) ES452722A1 (Sortimente)
FR (1) FR2394420A1 (Sortimente)
GB (1) GB1561895A (Sortimente)
IT (1) IT1071524B (Sortimente)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731971B2 (de) * 1977-07-15 1980-05-14 Dieter 4300 Essen Eller Verfahren und Einrichtung zur Steuerung bzw. Regelung einer Nutzschallquelle
DE2752657A1 (de) * 1977-11-25 1979-06-07 Blaupunkt Werke Gmbh Stoergeraeuschabhaengige lautstaerkensteuerung
DE2903607C2 (de) * 1979-01-31 1985-05-09 Heymann, Andreas, 4300 Essen Regeleinrichtung zur fremdgeräuschpegelabhängigen Lautstärkeregelung von Funkempfangs- oder NF-Übertragungseinrichtungen
JPS55147015A (en) * 1979-05-07 1980-11-15 Hitachi Ltd Audio unit mounting on car
US4476571A (en) * 1981-06-15 1984-10-09 Pioneer Electronic Corporation Automatic sound volume control device
JPS583305A (ja) * 1981-06-29 1983-01-10 Hitachi Ltd 自動音量調節回路
GB2124048A (en) * 1982-05-13 1984-02-08 Carfield Volume control of electronic games
DE3816918C1 (Sortimente) * 1988-05-18 1989-07-27 Adam Opel Ag, 6090 Ruesselsheim, De
GB2257317A (en) * 1991-06-26 1993-01-06 Damian Rupert Lindley Automatic volume control for car stereo

Also Published As

Publication number Publication date
IT1071524B (it) 1985-04-10
FR2394420A1 (fr) 1979-01-12
GB1561895A (en) 1980-03-05
ES452722A1 (es) 1977-10-01
DE2646232A1 (de) 1977-05-05

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Legal Events

Date Code Title Description
ST Notification of lapse