JP2004507140A5 - - Google Patents

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Publication number
JP2004507140A5
JP2004507140A5 JP2002520407A JP2002520407A JP2004507140A5 JP 2004507140 A5 JP2004507140 A5 JP 2004507140A5 JP 2002520407 A JP2002520407 A JP 2002520407A JP 2002520407 A JP2002520407 A JP 2002520407A JP 2004507140 A5 JP2004507140 A5 JP 2004507140A5
Authority
JP
Japan
Prior art keywords
digital
value
waveform
accumulator
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
JP2002520407A
Other languages
English (en)
Japanese (ja)
Other versions
JP4841800B2 (ja
JP2004507140A (ja
Filing date
Publication date
Priority claimed from US09/638,465 external-priority patent/US6498531B1/en
Application filed filed Critical
Publication of JP2004507140A publication Critical patent/JP2004507140A/ja
Publication of JP2004507140A5 publication Critical patent/JP2004507140A5/ja
Application granted granted Critical
Publication of JP4841800B2 publication Critical patent/JP4841800B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

JP2002520407A 2000-08-14 2001-08-03 デジタルｄ級オーディオ増幅器 Expired - Fee Related JP4841800B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/638,465 2000-08-14
US09/638,465 US6498531B1 (en) 2000-08-14 2000-08-14 Digital class-D audio amplifier
PCT/US2001/024502 WO2002015393A2 (en) 2000-08-14 2001-08-03 Digital class-d audio amplifier

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2011097483A Division JP5342599B2 (ja) 2000-08-14 2011-04-25 デジタルｄ級オーディオ増幅器

Publications (3)

Publication Number Publication Date
JP2004507140A JP2004507140A (ja) 2004-03-04
JP2004507140A5 true JP2004507140A5 (enExample) 2005-03-17
JP4841800B2 JP4841800B2 (ja) 2011-12-21

Family

ID=24560146

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2002520407A Expired - Fee Related JP4841800B2 (ja) 2000-08-14 2001-08-03 デジタルｄ級オーディオ増幅器
JP2011097483A Expired - Fee Related JP5342599B2 (ja) 2000-08-14 2011-04-25 デジタルｄ級オーディオ増幅器

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2011097483A Expired - Fee Related JP5342599B2 (ja) 2000-08-14 2011-04-25 デジタルｄ級オーディオ増幅器

Country Status (7)

Country Link
US (1) US6498531B1 (enExample)
EP (1) EP1310041B1 (enExample)
JP (2) JP4841800B2 (enExample)
KR (1) KR100847075B1 (enExample)
AT (1) ATE380409T1 (enExample)
DE (1) DE60131755T2 (enExample)
WO (1) WO2002015393A2 (enExample)

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US7146015B2 (en) * 2001-12-12 2006-12-05 Motorola Inc. Frequency threshold audio activity detector
US7590251B2 (en) * 2003-03-21 2009-09-15 D2Audio Corporation Clip detection in PWM amplifier
US7706545B2 (en) * 2003-03-21 2010-04-27 D2Audio Corporation Systems and methods for protection of audio amplifier circuits
CN100483932C (zh) * 2003-03-21 2009-04-29 D2音频有限公司 用于保护音频放大器电路的系统和方法
WO2004086609A1 (en) * 2003-03-21 2004-10-07 D2Audio Corporation Systems and methods for protection of audio amplifier circuits
US7929718B1 (en) 2003-05-12 2011-04-19 D2Audio Corporation Systems and methods for switching and mixing signals in a multi-channel amplifier
US7515072B2 (en) 2003-09-25 2009-04-07 International Rectifier Corporation Method and apparatus for converting PCM to PWM
KR100609266B1 (ko) * 2003-11-03 2006-08-04 삼성전자주식회사 폴트 감지 방법 및 이를 수행하기 위한 회로, 폴트에 따른파워앰프 회로 보호 방법 및 폴트를 감지하는 파워 앰프
EP1709733A4 (en) * 2004-01-07 2009-01-07 Plantronics IMPROVED FEED REJECTION FOR PULSE WIDTH MODULATION AMPLIFIERS AND AUTOMATIC GAIN CONTROL
WO2005109631A1 (en) * 2004-05-10 2005-11-17 Koninklijke Philips Electronics N.V. Overcurrent limiting method and device
US7286010B2 (en) 2006-01-26 2007-10-23 D2Audio Corporation Systems and methods for over-current protection
EP1985014B1 (en) * 2006-02-07 2010-07-28 D2Audio Corporation Pwm feedback/feed-forward protection
US7957489B2 (en) * 2006-02-17 2011-06-07 Canon Kabushiki Kaisha Digital amplifier and television receiving apparatus
US7400191B2 (en) 2006-04-07 2008-07-15 Manuel De Jesus Rodriguez Switching power amplifier
FR2905774A1 (fr) * 2006-09-08 2008-03-14 Shaktiware Soc Par Actions Sim Generateur de tension programmable
US7576604B2 (en) * 2006-12-15 2009-08-18 Bin Xu All-digital class-D audio amplifier
US7391346B1 (en) 2007-02-05 2008-06-24 Sigmatel, Inc. Switching amplifier system and method
US7705672B1 (en) 2007-02-12 2010-04-27 Manuel De Jesus Rodriguez Buck converters as power amplifier
KR100855685B1 (ko) * 2007-04-02 2008-09-03 주식회사 디엠비테크놀로지 다이렉트 디지털 ｄ급 증폭기를 이용한 오디오 시스템
KR20100098654A (ko) 2007-12-31 2010-09-08 인터실 아메리카스 인코포레이티드 개선된 과전류 클리핑 시스템 및 방법
EP2096753B1 (en) * 2008-02-29 2011-11-30 STMicroelectronics (Grenoble) SAS Switching amplifier
WO2009142718A2 (en) * 2008-05-21 2009-11-26 Silicon Laboratories Inc. Predictive feedback compensation for pwm switching amplifiers
US20100188136A1 (en) * 2009-01-27 2010-07-29 Rockford Corporation Dynamic thermal management system and method
KR20110036371A (ko) 2009-10-01 2011-04-07 삼성전자주식회사 오디오 증폭기
JP5825737B2 (ja) 2010-06-14 2015-12-02 パラメトリック サウンド コーポレーション パラメトリック信号処理・放射システムおよびその関連方法
KR101871360B1 (ko) * 2011-03-09 2018-06-26 삼성전자주식회사 오디오 신호 출력 방법 및 그에 따른 오디오 신호 출력 장치
US8421535B2 (en) * 2011-08-08 2013-04-16 Adamson Systems Engineering Inc. Method and apparatus for reducing distortion in Class D amplifier
ITRM20110609A1 (it) * 2011-11-17 2013-05-18 St Ericsson Sa Digital class-d amplifier and digital signal processing method
US9036831B2 (en) 2012-01-10 2015-05-19 Turtle Beach Corporation Amplification system, carrier tracking systems and related methods for use in parametric sound systems
US8958580B2 (en) 2012-04-18 2015-02-17 Turtle Beach Corporation Parametric transducers and related methods
US8934650B1 (en) 2012-07-03 2015-01-13 Turtle Beach Corporation Low profile parametric transducers and related methods
US8903104B2 (en) 2013-04-16 2014-12-02 Turtle Beach Corporation Video gaming system with ultrasonic speakers
US8988911B2 (en) 2013-06-13 2015-03-24 Turtle Beach Corporation Self-bias emitter circuit
US9332344B2 (en) 2013-06-13 2016-05-03 Turtle Beach Corporation Self-bias emitter circuit
NL2016605B1 (en) 2016-04-14 2017-11-02 Axign B V Digital audio converter and amplifier controller.
CN108718198B (zh) * 2018-08-07 2023-11-03 上海艾为电子技术股份有限公司 一种数字模拟转换器

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JPS593611U (ja) * 1982-06-29 1984-01-11 ヤマハ株式会社 パルス幅変調増幅回路
JPS58157221A (ja) * 1982-03-13 1983-09-19 Nippon Gakki Seizo Kk パルス幅変調回路
US4683439A (en) * 1986-01-09 1987-07-28 Honeywell Inc. Digitally driven switching power amplifier system
US5406284A (en) 1992-12-31 1995-04-11 Monolith Technologies Corporation Methods and apparatus for the quantization and analog conversion of digital signals
US5610553A (en) * 1993-03-02 1997-03-11 Kirn; Larry Switching amplifier with impedance transformation output stage
JPH06303049A (ja) * 1993-04-14 1994-10-28 Mitsubishi Electric Corp Ｐｗｍ増幅器
JPH06303061A (ja) * 1993-04-16 1994-10-28 Sony Corp 電子機器の調整装置
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US6127885A (en) * 1998-08-31 2000-10-03 Cello, Limited Class D amplifiers including transition zone modulation
JP2002171140A (ja) * 2000-12-01 2002-06-14 Mitsubishi Electric Corp オーディオ信号増幅出力回路

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