JP7047447B2 - 音声出力回路およびプロジェクター - Google Patents

音声出力回路およびプロジェクター Download PDF

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Publication number
JP7047447B2
JP7047447B2 JP2018026663A JP2018026663A JP7047447B2 JP 7047447 B2 JP7047447 B2 JP 7047447B2 JP 2018026663 A JP2018026663 A JP 2018026663A JP 2018026663 A JP2018026663 A JP 2018026663A JP 7047447 B2 JP7047447 B2 JP 7047447B2
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JP
Japan
Prior art keywords
terminal
unit
output
external connection
voltage
Prior art date
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Active
Application number
JP2018026663A
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English (en)
Japanese (ja)
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JP2019145930A5 (enExample
JP2019145930A (ja
Inventor
雅之 川上
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
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP2018026663A priority Critical patent/JP7047447B2/ja
Priority to CN201910116281.XA priority patent/CN110174917B/zh
Priority to US16/277,484 priority patent/US10959030B2/en
Publication of JP2019145930A publication Critical patent/JP2019145930A/ja
Publication of JP2019145930A5 publication Critical patent/JP2019145930A5/ja
Application granted granted Critical
Publication of JP7047447B2 publication Critical patent/JP7047447B2/ja
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    • 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
    • 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
    • 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

Landscapes

  • 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)
JP2018026663A 2018-02-19 2018-02-19 音声出力回路およびプロジェクター Active JP7047447B2 (ja)

Priority Applications (3)

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
CN201910116281.XA 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
US16/277,484 US10959030B2 (en) 2018-02-19 2019-02-15 Sound output circuit, projector, and control method of sound output circuit

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
JP2019145930A JP2019145930A (ja) 2019-08-29
JP2019145930A5 JP2019145930A5 (enExample) 2021-02-04
JP7047447B2 true JP7047447B2 (ja) 2022-04-05

Family

ID=67617146

Family Applications (1)

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

Country Status (3)

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

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2003304124A (ja) 2002-03-29 2003-10-24 Internatl Business Mach Corp <Ibm> 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
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
US20080164994A1 (en) 2007-01-05 2008-07-10 Timothy Johnson Audio I/O headset plug and plug detection circuitry
JP2012133252A (ja) 2010-12-24 2012-07-12 Sony Corp 音声信号出力装置、スピーカ装置、音声出力装置、音声信号出力方法
JP2013251728A (ja) 2012-05-31 2013-12-12 Fujitsu Ltd コネクタ装置、及び、電子装置
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
US20160254625A1 (en) 2015-02-26 2016-09-01 Samsung Electronics Co., Ltd. Multi-pole earphone plug and adjustable multi-pole audio connector including the same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02141115U (enExample) 1989-04-27 1990-11-27
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
WO2005043932A2 (en) * 2003-10-20 2005-05-12 Johnson Research And Development Co., Inc. Portable multimedia projection system
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
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
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
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2003304124A (ja) 2002-03-29 2003-10-24 Internatl Business Mach Corp <Ibm> 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
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
US20080164994A1 (en) 2007-01-05 2008-07-10 Timothy Johnson Audio I/O headset plug and plug detection circuitry
JP2012133252A (ja) 2010-12-24 2012-07-12 Sony Corp 音声信号出力装置、スピーカ装置、音声出力装置、音声信号出力方法
JP2013251728A (ja) 2012-05-31 2013-12-12 Fujitsu Ltd コネクタ装置、及び、電子装置
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
US20160254625A1 (en) 2015-02-26 2016-09-01 Samsung Electronics Co., Ltd. Multi-pole earphone plug and adjustable multi-pole audio connector including the same

Also Published As

Publication number Publication date
CN110174917B (zh) 2022-07-01
US20190261111A1 (en) 2019-08-22
US10959030B2 (en) 2021-03-23
JP2019145930A (ja) 2019-08-29
CN110174917A (zh) 2019-08-27

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