IT8822556A0 - Amplificatore audio integrato con regolazione unificata delle funzioni di "mute" e "stand by" e dei transitori di commutazione. - Google Patents

Amplificatore audio integrato con regolazione unificata delle funzioni di "mute" e "stand by" e dei transitori di commutazione.

Info

Publication number
IT8822556A0
IT8822556A0 IT8822556A IT2255688A IT8822556A0 IT 8822556 A0 IT8822556 A0 IT 8822556A0 IT 8822556 A IT8822556 A IT 8822556A IT 2255688 A IT2255688 A IT 2255688A IT 8822556 A0 IT8822556 A0 IT 8822556A0
Authority
IT
Italy
Prior art keywords
mute
stand
functions
audio amplifier
switching transistors
Prior art date
Application number
IT8822556A
Other languages
English (en)
Other versions
IT1229860B (it
Inventor
Aldo Torazzina
Original Assignee
Sgs Thomson Microelectronics
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 Sgs Thomson Microelectronics filed Critical Sgs Thomson Microelectronics
Priority to IT8822556A priority Critical patent/IT1229860B/it
Publication of IT8822556A0 publication Critical patent/IT8822556A0/it
Priority to KR1019890015305A priority patent/KR900008770A/ko
Priority to EP89311188A priority patent/EP0368528B1/en
Priority to DE68918227T priority patent/DE68918227T2/de
Priority to US07/428,516 priority patent/US4983927A/en
Priority to JP1290124A priority patent/JPH02181506A/ja
Application granted granted Critical
Publication of IT1229860B publication Critical patent/IT1229860B/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • 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
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
IT8822556A 1988-11-09 1988-11-09 Amplificatore audio integrato con regolazione unificata delle funzioni di "mute" e "stand by" e dei transitori di commutazione. IT1229860B (it)

Priority Applications (6)

Application Number Priority Date Filing Date Title
IT8822556A IT1229860B (it) 1988-11-09 1988-11-09 Amplificatore audio integrato con regolazione unificata delle funzioni di "mute" e "stand by" e dei transitori di commutazione.
KR1019890015305A KR900008770A (ko) 1988-11-09 1989-10-24 오디오 증폭기
EP89311188A EP0368528B1 (en) 1988-11-09 1989-10-30 Audio amplifier with mute and stand-by states
DE68918227T DE68918227T2 (de) 1988-11-09 1989-10-30 Audioverstärker mit Stumm- und Bereitschaftzustand.
US07/428,516 US4983927A (en) 1988-11-09 1989-10-30 Integrated audio amplifier with combined regulation of the "mute" and "standby" functions and the switching transients
JP1290124A JPH02181506A (ja) 1988-11-09 1989-11-09 オーディオ増幅器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8822556A IT1229860B (it) 1988-11-09 1988-11-09 Amplificatore audio integrato con regolazione unificata delle funzioni di "mute" e "stand by" e dei transitori di commutazione.

Publications (2)

Publication Number Publication Date
IT8822556A0 true IT8822556A0 (it) 1988-11-09
IT1229860B IT1229860B (it) 1991-09-13

Family

ID=11197802

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8822556A IT1229860B (it) 1988-11-09 1988-11-09 Amplificatore audio integrato con regolazione unificata delle funzioni di "mute" e "stand by" e dei transitori di commutazione.

Country Status (6)

Country Link
US (1) US4983927A (it)
EP (1) EP0368528B1 (it)
JP (1) JPH02181506A (it)
KR (1) KR900008770A (it)
DE (1) DE68918227T2 (it)
IT (1) IT1229860B (it)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0666592B2 (ja) * 1989-11-30 1994-08-24 株式会社東芝 電力増幅装置
FI87029C (fi) * 1990-04-25 1992-11-10 Teleste Antenni Oy Bredbandig aktiv rf-krets
US5255094A (en) * 1990-10-10 1993-10-19 Thomson Consumer Electronics, S.A. Muting circuit for eliminating transient signals generated due to power supply turn-on and turn-off
JPH04160910A (ja) * 1990-10-25 1992-06-04 Pioneer Electron Corp 保護回路
US5208865A (en) * 1991-12-23 1993-05-04 Ford Motor Company Muting circuit using common mode rejection of differential amplifier
EP0570655B1 (en) * 1992-05-22 2000-12-27 STMicroelectronics S.r.l. Audio amplifier on-off control circuit
EP0576770B1 (en) * 1992-05-22 1999-12-22 STMicroelectronics S.r.l. Audio Amplifier turn-off control circuit
EP0572755B1 (en) * 1992-05-29 1996-03-13 STMicroelectronics S.r.l. Turn-on control circuit for electric devices
JP2750796B2 (ja) * 1992-09-16 1998-05-13 ローム株式会社 オーディオ用パワーアンプｉｃ
US5530737A (en) 1993-03-22 1996-06-25 Phonex Corporation Secure access telephone extension system and method
DE69429660T2 (de) * 1994-10-07 2002-11-14 St Microelectronics Srl Brückenverstärker mit hohem Wirkungsgrad
US5648742A (en) * 1995-10-23 1997-07-15 National Semiconductor Corporation Amplifier circuit with reduced turn-on and turn-off transients
US5703529A (en) * 1995-10-13 1997-12-30 National Semiconductor Corporation Amplifier circuit with reduced DC power related transients
US5939938A (en) * 1995-10-13 1999-08-17 National Semiconductor Corporation Amplifier circuit with reduced DC power related turn-on and turn-off transients
US6931124B1 (en) 2000-01-13 2005-08-16 Acoustic Technology, Inc. Soft mute circuit
US20030123644A1 (en) * 2000-01-26 2003-07-03 Harrow Scott E. Method and apparatus for removing audio artifacts
US6346854B1 (en) * 2000-10-31 2002-02-12 National Semiconductor Corporation Amplifier circuit with reduced DC power related turn-on and turn-off transients
FR2853472B1 (fr) * 2003-04-01 2005-06-24 St Microelectronics Sa Circuit amplificateur audio
US20060023896A1 (en) * 2004-07-28 2006-02-02 Ginsberg Mark G Apparatus and method for controlling output signals from an amplifier when changing state
JP2006229389A (ja) * 2005-02-16 2006-08-31 New Japan Radio Co Ltd オーディオ増幅器
JP4535901B2 (ja) * 2005-02-16 2010-09-01 新日本無線株式会社 オーディオ増幅器
US7482866B2 (en) * 2007-02-06 2009-01-27 Himax Analogic, Inc. Audio system with power-on/off noise suppression and audio amplifier thereof
JP5212437B2 (ja) * 2010-08-30 2013-06-19 株式会社Ｊｖｃケンウッド 画像データ送信装置、画像データ受信装置、画像データ伝送システム、画像データ送信方法および画像データ受信方法
CN102685636B (zh) * 2011-03-18 2014-11-12 鸿富锦精密工业（深圳）有限公司 音频电路
EP3471406A1 (en) * 2017-10-13 2019-04-17 Teleste Oyj An arrangement for catv network
GB2593304B (en) * 2018-11-30 2022-11-09 Halliburton Energy Services Inc Annular safety valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1951457A1 (de) * 1969-10-13 1971-04-22 J U H Krautkraemer Ges F Elekt Schalteinrichtung zum Sparen von Versorgungsenergie,insbesondere fuer batteriebetriebene,elektronische Geraete
DE2931144A1 (de) * 1979-08-01 1981-02-19 Philips Patentverwaltung Schaltungsanordnung zum beseitigen des ein- und ausschaltknackens bei einem verstaerker
JPS56111307A (en) * 1980-02-08 1981-09-03 Toshiba Corp Amplifying device
JPS5881311A (ja) * 1981-11-11 1983-05-16 Rohm Co Ltd ミユ−テイング装置
JPS58153407A (ja) * 1982-03-08 1983-09-12 Nec Ic Microcomput Syst Ltd 増幅器
JPS5913409A (ja) * 1982-07-14 1984-01-24 Toshiba Corp 電力増幅回路
DE3337072C2 (de) * 1982-10-16 1985-09-26 Metz Apparatewerke Inh. Paul Metz, 8510 Fürth Niederfrequenzverstärker
IT1213158B (it) * 1984-04-20 1989-12-14 Ates Componenti Elettron Circuito di controllo dell'accensione per amplificatore audio.
DE3632076A1 (de) * 1986-05-23 1987-11-26 Thomson Brandt Gmbh Schaltungsanordnung zur automatischen einstellung des ruhestromes in einer gegentaktendstufe

Also Published As

Publication number Publication date
EP0368528A2 (en) 1990-05-16
US4983927A (en) 1991-01-08
IT1229860B (it) 1991-09-13
EP0368528A3 (en) 1991-01-16
DE68918227T2 (de) 1995-04-20
EP0368528B1 (en) 1994-09-14
JPH02181506A (ja) 1990-07-16
DE68918227D1 (de) 1994-10-20
KR900008770A (ko) 1990-06-04

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971129