WO2012136169A3 - 耳机功率放大器及工作方法、移动终端设备 - Google Patents

耳机功率放大器及工作方法、移动终端设备 Download PDF

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Publication number
WO2012136169A3
WO2012136169A3 PCT/CN2012/077492 CN2012077492W WO2012136169A3 WO 2012136169 A3 WO2012136169 A3 WO 2012136169A3 CN 2012077492 W CN2012077492 W CN 2012077492W WO 2012136169 A3 WO2012136169 A3 WO 2012136169A3
Authority
WO
WIPO (PCT)
Prior art keywords
power amplifier
audio channel
amplifier circuit
channel power
input end
Prior art date
Application number
PCT/CN2012/077492
Other languages
English (en)
French (fr)
Other versions
WO2012136169A2 (zh
Inventor
甄海涛
杨永祥
彦许星
Original Assignee
华为终端有限公司
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 华为终端有限公司 filed Critical 华为终端有限公司
Publication of WO2012136169A2 publication Critical patent/WO2012136169A2/zh
Publication of WO2012136169A3 publication Critical patent/WO2012136169A3/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H01Q1/46—Electric supply lines or communication lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

本发明提供一种耳机功率放大器及工作方法、移动终端设备。包括：与耳机地线相连的地接点、与耳机左声道相连的左声道功率放大电路、以及与耳机右声道相连接的右声道功率放大电路；左声道功率放大电路中包括第一运算放大器，右声道功率放大电路中包括第二运算放大器；地接点上串联有第一磁珠；左声道功率放大电路中还包括：从第一磁珠的输入端引出至第一运算放大器的同相输入端的第一正反馈，右声道功率放大电路中还包括：从第一磁珠的输入端引出至第二运算放大器的同相输入端的第二正反馈。
PCT/CN2012/077492 2012-02-27 2012-06-26 耳机功率放大器及工作方法、移动终端设备 WO2012136169A2 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210045902.8 2012-02-27
CN2012100459028A CN103297894A (zh) 2012-02-27 2012-02-27 耳机功率放大器及工作方法、移动终端设备

Publications (2)

Publication Number Publication Date
WO2012136169A2 WO2012136169A2 (zh) 2012-10-11
WO2012136169A3 true WO2012136169A3 (zh) 2013-01-24

Family

ID=46969609

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/077492 WO2012136169A2 (zh) 2012-02-27 2012-06-26 耳机功率放大器及工作方法、移动终端设备

Country Status (4)

Country Link
US (1) US8755544B2 (zh)
EP (2) EP2632175A1 (zh)
CN (1) CN103297894A (zh)
WO (1) WO2012136169A2 (zh)

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US9326073B2 (en) 2014-04-11 2016-04-26 Qualcomm Incorporated FM filtering for class-G/H headphones
JP6509031B2 (ja) * 2015-05-14 2019-05-08 キヤノン株式会社 画像処理装置、画像処理方法及び撮像装置
US10003312B2 (en) 2015-08-31 2018-06-19 Qualcomm Incorporated Amplifier with feedback circuit
US9977755B2 (en) 2016-03-24 2018-05-22 Qualcomm Incorporated Mobile device with multiple communication capabilities
CN106060719A (zh) * 2016-05-31 2016-10-26 维沃移动通信有限公司 一种终端音频输出的控制方法及终端
CN106254983A (zh) * 2016-08-16 2016-12-21 深圳天珑无线科技有限公司 一种手机耳机电路
CN110719548B (zh) * 2018-07-12 2022-04-29 中兴通讯股份有限公司 音频处理装置、音频串扰处理方法及装置
CN112118517B (zh) * 2019-06-19 2022-04-08 荣耀终端有限公司 一种音频芯片及终端
CN110321098B (zh) * 2019-06-21 2023-02-07 维沃移动通信有限公司 一种终端设备、音频播放系统以及音频电路
EP4266492A4 (en) * 2021-03-16 2024-07-17 Samsung Electronics Co Ltd ELECTRONIC DEVICE AND METHOD FOR IMPROVING THE ANTENNA PERFORMANCE OF AN ELECTRONIC DEVICE
CN113810816B (zh) * 2021-09-17 2024-01-23 维沃移动通信有限公司 耳机、调频信号接收系统和方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201069882Y (zh) * 2007-02-02 2008-06-04 清华大学 音频耳机放大器
CN101316111A (zh) * 2008-07-23 2008-12-03 嘉兴闻泰通讯科技有限公司 一种移动终端耳机
CN101489165A (zh) * 2008-01-16 2009-07-22 鸿富锦精密工业（深圳）有限公司 音频补偿装置
US20090262970A1 (en) * 2008-04-22 2009-10-22 Samsung Electronics Co. Ltd. Headset having ferrite beads for improving antenna performance

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001308653A (ja) * 2000-04-26 2001-11-02 Nippon Precision Circuits Inc 増幅器
EP1512229B1 (en) * 2002-06-12 2007-05-09 Nokia Corporation Mobile electronic device having audio connector providing an antenna function
US7353041B2 (en) * 2005-04-04 2008-04-01 Reseach In Motion Limited Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI)
US20090325633A1 (en) * 2008-06-30 2009-12-31 Sony Ericsson Mobile Communications Ab Method for reducing a disturbance in an output signal caused by a disturbing signal in a multiport connector, multiport connector circuit, and mobile device
US8452024B2 (en) * 2010-04-29 2013-05-28 Texas Instruments Incorporated Ground loop noise rejection for a headset subsystem

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201069882Y (zh) * 2007-02-02 2008-06-04 清华大学 音频耳机放大器
CN101489165A (zh) * 2008-01-16 2009-07-22 鸿富锦精密工业（深圳）有限公司 音频补偿装置
US20090262970A1 (en) * 2008-04-22 2009-10-22 Samsung Electronics Co. Ltd. Headset having ferrite beads for improving antenna performance
CN101316111A (zh) * 2008-07-23 2008-12-03 嘉兴闻泰通讯科技有限公司 一种移动终端耳机

Also Published As

Publication number Publication date
US8755544B2 (en) 2014-06-17
EP3139629B1 (en) 2021-03-24
US20130223659A1 (en) 2013-08-29
EP2632175A1 (en) 2013-08-28
WO2012136169A2 (zh) 2012-10-11
CN103297894A (zh) 2013-09-11
EP3139629A1 (en) 2017-03-08

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