CN1767378A - 扬声器驱动用放大装置及声音输出装置 - Google Patents
扬声器驱动用放大装置及声音输出装置 Download PDFInfo
- Publication number
- CN1767378A CN1767378A CN200510119249.5A CN200510119249A CN1767378A CN 1767378 A CN1767378 A CN 1767378A CN 200510119249 A CN200510119249 A CN 200510119249A CN 1767378 A CN1767378 A CN 1767378A
- Authority
- CN
- China
- Prior art keywords
- drive
- circuit
- gain
- speaker
- power end
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000003321 amplification Effects 0.000 claims description 21
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 21
- 238000010586 diagram Methods 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/007—Control dependent on the supply voltage
-
- 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
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/3026—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being discontinuously variable, e.g. controlled by switching
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004313181 | 2004-10-28 | ||
JP2004313181A JP4152374B2 (ja) | 2004-10-28 | 2004-10-28 | スピーカ駆動用増幅装置および音声出力装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1767378A true CN1767378A (zh) | 2006-05-03 |
Family
ID=36261914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200510119249.5A Pending CN1767378A (zh) | 2004-10-28 | 2005-10-28 | 扬声器驱动用放大装置及声音输出装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7764797B2 (zh) |
JP (1) | JP4152374B2 (zh) |
CN (1) | CN1767378A (zh) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102118668A (zh) * | 2010-01-06 | 2011-07-06 | 宏达国际电子股份有限公司 | 扬声器系统和扬声器驱动电路 |
CN102208899A (zh) * | 2010-03-31 | 2011-10-05 | 索尼欧洲有限公司 | 功率放大器 |
CN102857228A (zh) * | 2011-06-30 | 2013-01-02 | 富泰华工业(深圳)有限公司 | 电子设备及其音频输出控制方法 |
CN103686529A (zh) * | 2012-09-13 | 2014-03-26 | 纬创资通股份有限公司 | 电压供应电路、音频输出装置与电压供应方法 |
US8781139B2 (en) | 2009-12-31 | 2014-07-15 | Htc Corporation | Speaker system and speaker driving circuit |
CN105210384A (zh) * | 2012-12-27 | 2015-12-30 | 思睿逻辑国际半导体有限公司 | 检测电路 |
CN105554652A (zh) * | 2015-12-18 | 2016-05-04 | 山东亿诺赛欧电子科技有限公司 | 扬声器 |
CN106416058A (zh) * | 2013-09-16 | 2017-02-15 | 美国思睿逻辑有限公司 | 用于检测耦合至音频设备的换能器设备的负载阻抗的系统及方法 |
CN109891911A (zh) * | 2016-10-27 | 2019-06-14 | 悠声股份有限公司 | 用于操作压电声换能器和/或动态声换能器的放大器单元以及声音产生单元 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007135077A (ja) * | 2005-11-11 | 2007-05-31 | Kyocera Corp | 携帯端末装置、音響出力装置、音響装置及びその音響出力制御方法 |
US7545209B2 (en) * | 2006-09-07 | 2009-06-09 | National Semiconductor Corporation | Gain adjustment for programmable gain amplifiers |
GB2456005B (en) * | 2007-12-28 | 2013-03-06 | Wolfson Ltd | Amplifier circuit |
US7920026B2 (en) * | 2008-04-07 | 2011-04-05 | National Semiconductor Corporation | Amplifier output stage with extended operating range and reduced quiescent current |
US8437602B2 (en) * | 2008-09-01 | 2013-05-07 | Sony Corporation | Information processing apparatus and program |
JP2011182263A (ja) * | 2010-03-02 | 2011-09-15 | Panasonic Corp | スピーカ駆動集積回路 |
US9571926B2 (en) * | 2011-04-08 | 2017-02-14 | Christopher Technology (Shanghai) Limited | High-efficiency low-voltage-power-supply high-power-output audio driver architecture |
JP5982864B2 (ja) * | 2012-02-23 | 2016-08-31 | ヤマハ株式会社 | オーディオアンプ |
US9084059B2 (en) | 2012-06-08 | 2015-07-14 | Apple Inc. | Electronic audio device to determine matching and non-matching speakers |
US9100757B2 (en) | 2012-07-02 | 2015-08-04 | Apple Inc. | Headset impedance detection |
CN104270699A (zh) * | 2014-10-09 | 2015-01-07 | 技嘉科技股份有限公司 | 声音输出的控制电路 |
CN106303835A (zh) * | 2016-10-26 | 2017-01-04 | 深圳市俊佳豪科技有限公司 | 一种双蓝牙模块的音频电路和音响及双语播放方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58191713A (ja) | 1982-05-07 | 1983-11-09 | Toshiba Corp | エポキシ樹脂系組成物 |
JPS6165699A (ja) | 1984-09-07 | 1986-04-04 | Hitachi Ltd | 電力増幅装置 |
JPS61251214A (ja) | 1985-04-30 | 1986-11-08 | Hitachi Ltd | 電源回路 |
JPS63217806A (ja) | 1987-03-06 | 1988-09-09 | Toshiba Corp | スピ−カ駆動用増幅器 |
JPH03222508A (ja) | 1990-01-26 | 1991-10-01 | Onkyo Corp | 増幅器回路 |
JPH07240636A (ja) | 1994-03-01 | 1995-09-12 | Kenwood Corp | 電力増幅器 |
US5910991A (en) * | 1996-08-02 | 1999-06-08 | Apple Computer, Inc. | Method and apparatus for a speaker for a personal computer for selective use as a conventional speaker or as a sub-woofer |
JP2001185960A (ja) | 1999-12-27 | 2001-07-06 | Sharp Corp | 増幅器 |
US7103189B2 (en) * | 2001-01-26 | 2006-09-05 | Dell Products L.P. | Power supply noise immunity for audio amplifier |
JP2003032777A (ja) | 2001-07-18 | 2003-01-31 | Denso Corp | 音量調整装置及び記録媒体 |
FR2881005B1 (fr) * | 2005-01-18 | 2007-03-30 | Atmel Corp | Methode et topologie pour commuter un etage de sortie dans un amplificateur audio de classe ab pour des applications sans fil |
-
2004
- 2004-10-28 JP JP2004313181A patent/JP4152374B2/ja not_active Expired - Fee Related
-
2005
- 2005-10-24 US US11/255,986 patent/US7764797B2/en active Active
- 2005-10-28 CN CN200510119249.5A patent/CN1767378A/zh active Pending
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8781139B2 (en) | 2009-12-31 | 2014-07-15 | Htc Corporation | Speaker system and speaker driving circuit |
CN102118668B (zh) * | 2010-01-06 | 2014-10-15 | 宏达国际电子股份有限公司 | 扬声器系统和扬声器驱动电路 |
CN102118668A (zh) * | 2010-01-06 | 2011-07-06 | 宏达国际电子股份有限公司 | 扬声器系统和扬声器驱动电路 |
CN102208899B (zh) * | 2010-03-31 | 2016-06-22 | 索尼欧洲有限公司 | 功率放大器 |
CN102208899A (zh) * | 2010-03-31 | 2011-10-05 | 索尼欧洲有限公司 | 功率放大器 |
CN102857228A (zh) * | 2011-06-30 | 2013-01-02 | 富泰华工业(深圳)有限公司 | 电子设备及其音频输出控制方法 |
CN103686529A (zh) * | 2012-09-13 | 2014-03-26 | 纬创资通股份有限公司 | 电压供应电路、音频输出装置与电压供应方法 |
CN105210384A (zh) * | 2012-12-27 | 2015-12-30 | 思睿逻辑国际半导体有限公司 | 检测电路 |
CN105210384B (zh) * | 2012-12-27 | 2018-06-12 | 思睿逻辑国际半导体有限公司 | 检测电路 |
CN106416058A (zh) * | 2013-09-16 | 2017-02-15 | 美国思睿逻辑有限公司 | 用于检测耦合至音频设备的换能器设备的负载阻抗的系统及方法 |
CN106416058B (zh) * | 2013-09-16 | 2019-06-11 | 美国思睿逻辑有限公司 | 用于检测耦合至音频设备的换能器设备的负载阻抗的系统及方法 |
CN105554652A (zh) * | 2015-12-18 | 2016-05-04 | 山东亿诺赛欧电子科技有限公司 | 扬声器 |
CN105554652B (zh) * | 2015-12-18 | 2018-10-12 | 山东亿诺赛欧电子科技有限公司 | 扬声器 |
CN109891911A (zh) * | 2016-10-27 | 2019-06-14 | 悠声股份有限公司 | 用于操作压电声换能器和/或动态声换能器的放大器单元以及声音产生单元 |
CN109891911B (zh) * | 2016-10-27 | 2021-11-02 | 悠声股份有限公司 | 用于操作声换能器的放大器单元以及声音产生单元 |
Also Published As
Publication number | Publication date |
---|---|
JP2006128958A (ja) | 2006-05-18 |
JP4152374B2 (ja) | 2008-09-17 |
US20060093153A1 (en) | 2006-05-04 |
US7764797B2 (en) | 2010-07-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
CI01 | Publication of corrected invention patent application |
Correction item: First inventor Correct: Shan Benmu False: Chu Benmu Number: 18 Volume: 22 |
|
CI02 | Correction of invention patent application |
Correction item: Inventor first Correct: Shan Benmu False: Chu Benmu Number: 18 Page: The title page Volume: 22 |
|
COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR NO. 1; FROM: KEIICHI YAMAMOTO TO: MU YOMAMOTO |
|
ERR | Gazette correction |
Free format text: CORRECT: THE FIRST INVENTOR; FROM: KEIICHI YAMAMOTO TO: MU YOMAMOTO |
|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |