JP2003218647A5 - - Google Patents

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Publication number
JP2003218647A5
JP2003218647A5 JP2002162437A JP2002162437A JP2003218647A5 JP 2003218647 A5 JP2003218647 A5 JP 2003218647A5 JP 2002162437 A JP2002162437 A JP 2002162437A JP 2002162437 A JP2002162437 A JP 2002162437A JP 2003218647 A5 JP2003218647 A5 JP 2003218647A5
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JP
Japan
Prior art keywords
pulse
signal
pulse modulation
level
power amplifier
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
Application number
JP2002162437A
Other languages
English (en)
Japanese (ja)
Other versions
JP2003218647A (ja
JP3894305B2 (ja
Filing date
Publication date
Application filed filed Critical
Priority claimed from JP2002162437A external-priority patent/JP3894305B2/ja
Priority to JP2002162437A priority Critical patent/JP3894305B2/ja
Priority to DE60239484T priority patent/DE60239484D1/de
Priority to EP02775506A priority patent/EP1447908B1/en
Priority to KR1020037008938A priority patent/KR100976444B1/ko
Priority to US10/466,927 priority patent/US6917242B2/en
Priority to PCT/JP2002/011597 priority patent/WO2003044947A1/ja
Publication of JP2003218647A publication Critical patent/JP2003218647A/ja
Publication of JP2003218647A5 publication Critical patent/JP2003218647A5/ja
Publication of JP3894305B2 publication Critical patent/JP3894305B2/ja
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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JP2002162437A 2001-11-19 2002-06-04 パワーアンプ Expired - Fee Related JP3894305B2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2002162437A JP3894305B2 (ja) 2001-11-19 2002-06-04 パワーアンプ
US10/466,927 US6917242B2 (en) 2001-11-19 2002-11-07 Power amplifier
EP02775506A EP1447908B1 (en) 2001-11-19 2002-11-07 Power amplifier
KR1020037008938A KR100976444B1 (ko) 2001-11-19 2002-11-07 파워 앰프
DE60239484T DE60239484D1 (de) 2001-11-19 2002-11-07 Leistungsverstärker
PCT/JP2002/011597 WO2003044947A1 (fr) 2001-11-19 2002-11-07 Amplificateur de puissance

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001-352922 2001-11-19
JP2001352922 2001-11-19
JP2002162437A JP3894305B2 (ja) 2001-11-19 2002-06-04 パワーアンプ

Publications (3)

Publication Number Publication Date
JP2003218647A JP2003218647A (ja) 2003-07-31
JP2003218647A5 true JP2003218647A5 (enExample) 2005-09-22
JP3894305B2 JP3894305B2 (ja) 2007-03-22

Family

ID=26624594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002162437A Expired - Fee Related JP3894305B2 (ja) 2001-11-19 2002-06-04 パワーアンプ

Country Status (6)

Country Link
US (1) US6917242B2 (enExample)
EP (1) EP1447908B1 (enExample)
JP (1) JP3894305B2 (enExample)
KR (1) KR100976444B1 (enExample)
DE (1) DE60239484D1 (enExample)
WO (1) WO2003044947A1 (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3894294B2 (ja) * 2001-11-19 2007-03-14 ソニー株式会社 パワーアンプ
WO2004010575A1 (ja) * 2002-07-18 2004-01-29 Sony Corporation パワーアンプ装置
US7061312B2 (en) * 2003-03-21 2006-06-13 D2Audio Corporation Systems and methods for providing multi channel pulse width modulated audio with staggered outputs
US7929718B1 (en) 2003-05-12 2011-04-19 D2Audio Corporation Systems and methods for switching and mixing signals in a multi-channel amplifier
JP4154601B2 (ja) * 2003-10-23 2008-09-24 ソニー株式会社 信号変換装置、出力アンプ装置、オーディオ装置および送受信システム
JP4587222B2 (ja) * 2005-11-29 2010-11-24 ローム株式会社 Ｄ級アンプ及びこれを備えた音響機器
CN101371434B (zh) * 2006-01-24 2011-04-20 D2音频有限公司 用于通过将超声波信号加到输入音频信号以改进数字放大器的性能的系统和方法
JP4702296B2 (ja) * 2006-01-30 2011-06-15 ヤマハ株式会社 増幅器
US8174316B2 (en) * 2006-10-18 2012-05-08 Apexone Microelectronics Ltd. Switching amplifier
TWI354439B (en) * 2007-06-04 2011-12-11 Holtek Semiconductor Inc Ac signal producer and method thereof
US8072283B2 (en) * 2007-09-04 2011-12-06 Telefonaktiebolaget L M Ericsson (Publ) Signal modulation for switched mode power amplifiers
JP2009147552A (ja) * 2007-12-12 2009-07-02 Panasonic Corp Ｄ級アンプ
JP5099699B2 (ja) * 2008-05-16 2012-12-19 国立大学法人 名古屋工業大学 パルス幅位置変調信号生成装置
CN102150368A (zh) * 2008-11-28 2011-08-10 三菱电机株式会社 互补型脉冲宽度调制电路、及数模转换装置
US7986187B1 (en) 2010-03-04 2011-07-26 Bose Corporation Versatile audio power amplifier
EP2608403A1 (en) * 2011-12-21 2013-06-26 Alcatel Lucent A method for signal modulation using pulse width modulators
US9559642B2 (en) 2015-01-02 2017-01-31 Logitech Europe, S.A. Audio delivery system having an improved efficiency and extended operation time between recharges or battery replacements
WO2019204999A1 (en) * 2018-04-25 2019-10-31 Huawei Technologies Co., Ltd. Method and apparatus for control of optical phase shifters in an optical device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3677229D1 (de) * 1986-12-01 1991-02-28 Itt Ind Gmbh Deutsche Stromumschalter.
US5398003A (en) * 1994-03-30 1995-03-14 Apple Computer, Inc. Pulse width modulation speaker amplifier
US5617058A (en) * 1995-11-13 1997-04-01 Apogee Technology, Inc. Digital signal processing for linearization of small input signals to a tri-state power switch
US6104248A (en) * 1998-10-23 2000-08-15 Carver; Robert W. Audio amplifier with tracking power supply utilizing inductive power converters
NL1011002C2 (nl) * 1999-01-12 2000-07-20 Univ Eindhoven Tech Versterkerschakeling.
JP2001185961A (ja) * 1999-12-24 2001-07-06 Alpine Electronics Inc デジタルアンプ
JP4387601B2 (ja) * 2000-02-01 2009-12-16 アルパイン株式会社 デジタルアンプ
KR20010105877A (ko) * 2000-05-19 2001-11-29 배길훈 자동차용 브레이크 시스템의 솔레노이드 밸브
JP2002158549A (ja) * 2000-11-17 2002-05-31 Sony Corp デジタルパワーアンプ装置
JP2002158544A (ja) * 2000-11-17 2002-05-31 Sony Corp デジタルパワーアンプ

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