CN110174917B - 声音输出电路、投影仪和声音输出电路的控制方法 - Google Patents

声音输出电路、投影仪和声音输出电路的控制方法 Download PDF

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Publication number
CN110174917B
CN110174917B CN201910116281.XA CN201910116281A CN110174917B CN 110174917 B CN110174917 B CN 110174917B CN 201910116281 A CN201910116281 A CN 201910116281A CN 110174917 B CN110174917 B CN 110174917B
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China
Prior art keywords
terminal
external connection
output
unit
output circuit
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CN201910116281.XA
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English (en)
Chinese (zh)
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CN110174917A (zh
Inventor
川上雅之
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.)
Seiko Epson Corp
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Seiko Epson Corp
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Publication date
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Publication of CN110174917A publication Critical patent/CN110174917A/zh
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Publication of CN110174917B publication Critical patent/CN110174917B/zh
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    • 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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • 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
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/03—Aspects of the reduction of energy consumption in hearing devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/13—Aspects of volume control, not necessarily automatic, in stereophonic sound systems

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
CN201910116281.XA 2018-02-19 2019-02-15 声音输出电路、投影仪和声音输出电路的控制方法 Active CN110174917B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018026663A JP7047447B2 (ja) 2018-02-19 2018-02-19 音声出力回路およびプロジェクター
JP2018-026663 2018-02-19

Publications (2)

Publication Number Publication Date
CN110174917A CN110174917A (zh) 2019-08-27
CN110174917B true CN110174917B (zh) 2022-07-01

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CN201910116281.XA Active CN110174917B (zh) 2018-02-19 2019-02-15 声音输出电路、投影仪和声音输出电路的控制方法

Country Status (3)

Country Link
US (1) US10959030B2 (enExample)
JP (1) JP7047447B2 (enExample)
CN (1) CN110174917B (enExample)

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02141115U (enExample) 1989-04-27 1990-11-27
JP2002101491A (ja) * 2000-09-25 2002-04-05 Sanyo Electric Co Ltd 音声信号処理装置、及び携帯電話機
JP3659349B2 (ja) * 2002-03-29 2005-06-15 インターナショナル・ビジネス・マシーンズ・コーポレーション オーディオアンプ及びノート型パーソナルコンピュータ
JP2004112019A (ja) 2002-09-13 2004-04-08 Kenwood Corp 音声電力増幅装置の地絡保護装置
JP4307875B2 (ja) 2003-03-19 2009-08-05 パナソニック株式会社 音声出力回路
JP2005057624A (ja) * 2003-08-07 2005-03-03 Sony Corp 短絡保護回路および短絡保護方法
WO2005043932A2 (en) * 2003-10-20 2005-05-12 Johnson Research And Development Co., Inc. Portable multimedia projection system
US7912501B2 (en) * 2007-01-05 2011-03-22 Apple Inc. Audio I/O headset plug and plug detection circuitry
TW201043049A (en) * 2008-12-15 2010-12-01 Mediatek Inc DC-coupled audio out unit
JP2010288138A (ja) 2009-06-12 2010-12-24 Clarion Co Ltd 電力増幅器保護回路
US8129862B2 (en) * 2009-10-23 2012-03-06 Analog Devices, Inc. Scalable highest available voltage selector circuit
JP5817113B2 (ja) * 2010-12-24 2015-11-18 ソニー株式会社 音声信号出力装置、音声出力システム、音声信号出力方法
US8818005B2 (en) * 2011-05-17 2014-08-26 Fairchild Semiconductor Corporation Capacitor controlled switch system
CN103313168A (zh) * 2012-03-08 2013-09-18 鸿富锦精密工业（深圳）有限公司 耳机插孔驱动电路
JP2013251728A (ja) * 2012-05-31 2013-12-12 Fujitsu Ltd コネクタ装置、及び、電子装置
CN105247887A (zh) * 2013-06-07 2016-01-13 索尼公司 输入装置和传送方法、主机装置和接收方法以及信号处理系统和收发方法
JP2015037269A (ja) * 2013-08-14 2015-02-23 富士通株式会社 電子機器、電圧監視方法及び電圧監視プログラム
JP6220731B2 (ja) * 2014-05-28 2017-10-25 京セラ株式会社 電子機器、５極プラグイヤホン、および電子機器システム
US9699542B2 (en) * 2014-10-03 2017-07-04 Analog Devices Global Headset amplification circuit with error voltage suppression
KR102291026B1 (ko) * 2015-02-26 2021-08-18 삼성전자주식회사 가변 플러그 및 이를 구비한 오디오 컨넥터

Also Published As

Publication number Publication date
US20190261111A1 (en) 2019-08-22
JP7047447B2 (ja) 2022-04-05
US10959030B2 (en) 2021-03-23
JP2019145930A (ja) 2019-08-29
CN110174917A (zh) 2019-08-27

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