CN106412761A - 用于汽车音频功率放大器的嵌入式扬声器保护 - Google Patents
用于汽车音频功率放大器的嵌入式扬声器保护 Download PDFInfo
- Publication number
- CN106412761A CN106412761A CN201610830961.4A CN201610830961A CN106412761A CN 106412761 A CN106412761 A CN 106412761A CN 201610830961 A CN201610830961 A CN 201610830961A CN 106412761 A CN106412761 A CN 106412761A
- Authority
- CN
- China
- Prior art keywords
- amplifier
- loudspeaker
- latch
- control signal
- coupled
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000007689 inspection Methods 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims 3
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000001052 transient effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- H03G3/34—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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/007—Protection circuits for transducers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/321—Use of a microprocessor in an amplifier circuit or its control circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/375—Circuitry to compensate the offset being present in an amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/471—Indexing scheme relating to amplifiers the voltage being sensed
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/78—A comparator being used in a controlling circuit of an amplifier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
- H04R2201/028—Structural combinations of loudspeakers with built-in power amplifiers, e.g. in the same acoustic enclosure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (30)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610830961.4A CN106412761B (zh) | 2011-12-30 | 2011-12-30 | 用于汽车音频功率放大器的嵌入式扬声器保护 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110461473.8A CN103188586B (zh) | 2011-12-30 | 用于汽车音频功率放大器的嵌入式扬声器保护 | |
CN201610830961.4A CN106412761B (zh) | 2011-12-30 | 2011-12-30 | 用于汽车音频功率放大器的嵌入式扬声器保护 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201110461473.8A Division CN103188586B (zh) | 2011-12-30 | 2011-12-30 | 用于汽车音频功率放大器的嵌入式扬声器保护 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106412761A true CN106412761A (zh) | 2017-02-15 |
CN106412761B CN106412761B (zh) | 2020-02-14 |
Family
ID=48679477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610830961.4A Active CN106412761B (zh) | 2011-12-30 | 2011-12-30 | 用于汽车音频功率放大器的嵌入式扬声器保护 |
Country Status (2)
Country | Link |
---|---|
US (5) | US9099978B2 (zh) |
CN (1) | CN106412761B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019149236A1 (zh) * | 2018-01-31 | 2019-08-08 | 中兴通讯股份有限公司 | 保护电路、电路保护方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106412761B (zh) * | 2011-12-30 | 2020-02-14 | 意法半导体研发(深圳)有限公司 | 用于汽车音频功率放大器的嵌入式扬声器保护 |
JP2017183788A (ja) * | 2016-03-28 | 2017-10-05 | パナソニックIpマネジメント株式会社 | 音響処理装置、音響制御装置および音響制御方法 |
CN112752195B (zh) * | 2020-12-30 | 2023-01-31 | 恒玄科技(上海)股份有限公司 | 用于耳机的音频功放处理方法和音频功放系统 |
Citations (5)
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---|---|---|---|---|
US4034268A (en) * | 1975-11-10 | 1977-07-05 | Heath Company | Speaker protection circuit |
US20030160653A1 (en) * | 2002-02-28 | 2003-08-28 | Pioneer Corporation | BTL amplifying system |
CN201374809Y (zh) * | 2009-01-05 | 2009-12-30 | 深圳市同洲电子股份有限公司 | 一种扬声器保护装置及移动通信终端 |
CN201479079U (zh) * | 2009-08-28 | 2010-05-19 | 四川湖山电器有限责任公司 | 功率放大器短路保护装置 |
CN103188586A (zh) * | 2011-12-30 | 2013-07-03 | 意法半导体研发(深圳)有限公司 | 用于汽车音频功率放大器的嵌入式扬声器保护 |
Family Cites Families (23)
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US4313033A (en) * | 1978-05-31 | 1982-01-26 | Hughes Aircraft Company | Apparatus and method for digital combination of delta modulated data |
US4301330A (en) * | 1979-09-28 | 1981-11-17 | Zenith Radio Corporation | Loudspeaker protection circuit |
KR910006360B1 (ko) * | 1988-08-23 | 1991-08-21 | 삼성전자 주식회사 | 디지탈 오디오기기의 뮤트회로 |
KR0155730B1 (ko) * | 1993-03-31 | 1998-11-16 | 김광호 | 뮤트회로 및 방법 |
US5815584A (en) | 1996-11-08 | 1998-09-29 | Ford Motor Company | Automatic detection of shorted loudspeakers in automotive audio systems |
WO2002080352A1 (en) * | 2001-03-29 | 2002-10-10 | Koninklijke Philips Electronics N.V. | Balanced transformer-less amplifier and an offset detection and correction system therefore |
CA2408045A1 (en) * | 2001-10-16 | 2003-04-16 | Audio Products International Corp. | Loudspeaker with large displacement motional feedback |
KR100609266B1 (ko) * | 2003-11-03 | 2006-08-04 | 삼성전자주식회사 | 폴트 감지 방법 및 이를 수행하기 위한 회로, 폴트에 따른파워앰프 회로 보호 방법 및 폴트를 감지하는 파워 앰프 |
CN100481715C (zh) | 2004-04-13 | 2009-04-22 | 松下电器产业株式会社 | 用于保护控制功率放大器的电位检测器及其功率放大器 |
JP2007088921A (ja) * | 2005-09-22 | 2007-04-05 | Matsushita Electric Ind Co Ltd | スピーカ保護回路 |
TWI320996B (en) * | 2006-07-06 | 2010-02-21 | Tatung Co | Pop sound prevention module and speaker apparatus thereof |
JP2008258749A (ja) * | 2007-04-02 | 2008-10-23 | Funai Electric Co Ltd | 薄型テレビジョン、および音響装置 |
US8503695B2 (en) * | 2007-09-28 | 2013-08-06 | Qualcomm Incorporated | Suppressing output offset in an audio device |
US7692488B2 (en) * | 2008-02-28 | 2010-04-06 | Panasonic Corporation | Output DC offset protection for class D amplifiers |
GB2459865B (en) * | 2008-05-07 | 2011-03-16 | Wolfson Microelectronics Plc | Amplifier Circuit |
TWI444054B (zh) * | 2009-06-03 | 2014-07-01 | Mstar Semiconductor Inc | 可去爆音之聲頻控制器及去爆音方法 |
US7852156B1 (en) * | 2009-08-21 | 2010-12-14 | Amazing Microelectronic Corp. | Class-D power amplifier having distortion-suppressing function |
US8259962B2 (en) * | 2010-02-22 | 2012-09-04 | Delphi Technologies, Inc. | Audio system configured to fade audio outputs and method thereof |
CN102333264A (zh) * | 2010-07-15 | 2012-01-25 | 鸿富锦精密工业(深圳)有限公司 | 静音控制电路及具有该静音控制电路的电子装置 |
GB2485620B (en) * | 2010-12-16 | 2013-04-17 | Wolfson Microelectronics Plc | DC offset compensation |
CN201910249U (zh) | 2010-12-29 | 2011-07-27 | 上海博泰悦臻电子设备制造有限公司 | 车载终端及其音频装置 |
US20130089161A1 (en) * | 2011-10-06 | 2013-04-11 | Douglas E. Heineman | Low-Power Modulation in an Amplifier |
CN202799077U (zh) | 2011-12-30 | 2013-03-13 | 意法半导体研发(深圳)有限公司 | 扬声器系统和在扬声器系统中使用的数字电路 |
-
2011
- 2011-12-30 CN CN201610830961.4A patent/CN106412761B/zh active Active
-
2012
- 2012-12-03 US US13/692,789 patent/US9099978B2/en active Active
-
2015
- 2015-06-30 US US14/754,861 patent/US9386372B2/en active Active
-
2016
- 2016-05-19 US US15/158,854 patent/US9532142B2/en active Active
- 2016-11-18 US US15/356,269 patent/US9800221B2/en active Active
-
2017
- 2017-10-03 US US15/723,622 patent/US10050595B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4034268A (en) * | 1975-11-10 | 1977-07-05 | Heath Company | Speaker protection circuit |
US20030160653A1 (en) * | 2002-02-28 | 2003-08-28 | Pioneer Corporation | BTL amplifying system |
CN201374809Y (zh) * | 2009-01-05 | 2009-12-30 | 深圳市同洲电子股份有限公司 | 一种扬声器保护装置及移动通信终端 |
CN201479079U (zh) * | 2009-08-28 | 2010-05-19 | 四川湖山电器有限责任公司 | 功率放大器短路保护装置 |
CN103188586A (zh) * | 2011-12-30 | 2013-07-03 | 意法半导体研发(深圳)有限公司 | 用于汽车音频功率放大器的嵌入式扬声器保护 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019149236A1 (zh) * | 2018-01-31 | 2019-08-08 | 中兴通讯股份有限公司 | 保护电路、电路保护方法 |
Also Published As
Publication number | Publication date |
---|---|
US20170070201A1 (en) | 2017-03-09 |
US20150304773A1 (en) | 2015-10-22 |
US20180026598A1 (en) | 2018-01-25 |
US20160269825A1 (en) | 2016-09-15 |
US9386372B2 (en) | 2016-07-05 |
US9800221B2 (en) | 2017-10-24 |
US20130188793A1 (en) | 2013-07-25 |
US9099978B2 (en) | 2015-08-04 |
CN106412761B (zh) | 2020-02-14 |
US9532142B2 (en) | 2016-12-27 |
US10050595B2 (en) | 2018-08-14 |
CN103188586A (zh) | 2013-07-03 |
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Address after: 5 / F, East B501, South B502, North B503, 6th floor, block B, TCL Industrial Research Institute building, No. 006, Gaoxin South 1st Road, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Co-patentee after: STMicroelectronics S.R.L. Patentee after: STMicroelectronics (Shenzhen) R&D Co.,Ltd. Address before: 518057, 4/5 building, B block, South SKYWORTH building, South Zone, Shenzhen hi tech Zone, Nanshan District science and Technology Park, Guangdong, China Co-patentee before: STMicroelectronics S.R.L. Patentee before: STMicroelectronics (Shenzhen) R&D Co.,Ltd. |
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