FR2231153A1 - - Google Patents

Info

Publication number
FR2231153A1
FR2231153A1 FR7411863A FR7411863A FR2231153A1 FR 2231153 A1 FR2231153 A1 FR 2231153A1 FR 7411863 A FR7411863 A FR 7411863A FR 7411863 A FR7411863 A FR 7411863A FR 2231153 A1 FR2231153 A1 FR 2231153A1
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.)
Granted
Application number
FR7411863A
Other languages
French (fr)
Other versions
FR2231153B1 (enExample
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.)
Television Research Ltd
Original Assignee
Television Research Ltd
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 Television Research Ltd filed Critical Television Research Ltd
Publication of FR2231153A1 publication Critical patent/FR2231153A1/fr
Application granted granted Critical
Publication of FR2231153B1 publication Critical patent/FR2231153B1/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
    • H03G3/20—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
FR7411863A 1973-03-28 1974-03-28 Expired FR2231153B1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1495173 1973-03-28

Publications (2)

Publication Number Publication Date
FR2231153A1 true FR2231153A1 (enExample) 1974-12-20
FR2231153B1 FR2231153B1 (enExample) 1978-01-20

Family

ID=10050425

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7411863A Expired FR2231153B1 (enExample) 1973-03-28 1974-03-28

Country Status (4)

Country Link
AT (1) AT332466B (enExample)
CA (1) CA1002882A (enExample)
DE (1) DE2414143B2 (enExample)
FR (1) FR2231153B1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353899A1 (fr) * 1976-06-02 1977-12-30 Fricke Jobst Dispositif de reproduction des sons

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2752657A1 (de) * 1977-11-25 1979-06-07 Blaupunkt Werke Gmbh Stoergeraeuschabhaengige lautstaerkensteuerung
DE2816858A1 (de) * 1978-04-18 1979-10-31 Wsz Elektronik Gmbh Schaltungsanordnung zur automatischen lautstaerkeregelung
DE2835384C2 (de) * 1978-08-12 1985-01-24 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth Anordnung zum automatischen Anpassen der Laustärke einer NF-Signalquelle
DE2849961A1 (de) * 1978-11-17 1980-05-22 Siemens Ag Elektroakustischer signalgeber mit automatischer lautstaerkeanpassung an den umgebungsgeraeuschpegel
DE4012175C2 (de) * 1990-04-14 1995-04-13 Telefunken Microelectron Freisprecheinrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR965365A (enExample) * 1950-09-11
US2668874A (en) * 1950-01-10 1954-02-09 Bell Telephone Labor Inc Automatic volume control
US3135836A (en) * 1961-08-07 1964-06-02 Wurlitzer Co Background noise compensated recording player
US3410958A (en) * 1965-03-25 1968-11-12 Executone Inf Sys Inc Noise controlled sound reproducing system
US3444323A (en) * 1964-11-26 1969-05-13 Tdk Electronics Co Ltd Automatic sound volume controlling system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR965365A (enExample) * 1950-09-11
US2668874A (en) * 1950-01-10 1954-02-09 Bell Telephone Labor Inc Automatic volume control
US3135836A (en) * 1961-08-07 1964-06-02 Wurlitzer Co Background noise compensated recording player
US3444323A (en) * 1964-11-26 1969-05-13 Tdk Electronics Co Ltd Automatic sound volume controlling system
US3410958A (en) * 1965-03-25 1968-11-12 Executone Inf Sys Inc Noise controlled sound reproducing system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REVUE DT "TECHNISCHE MITTEILUNGEN AEG-TELEFUNKEN", VOLUME 61, NO. 3 DE 1971, PAGES 186-189, ARTICLE DE A. HAFNER: "GERAUSCHABHANGIGE ELEKTRONISCHE LAUTSTARKEEINSTELLUNG EL 100" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353899A1 (fr) * 1976-06-02 1977-12-30 Fricke Jobst Dispositif de reproduction des sons

Also Published As

Publication number Publication date
FR2231153B1 (enExample) 1978-01-20
ATA250874A (de) 1976-01-15
DE2414143A1 (de) 1974-10-03
DE2414143B2 (de) 1981-01-15
CA1002882A (en) 1977-01-04
AT332466B (de) 1976-09-27

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse