DE60321278D1 - Mehrkanal-Pulsbreitenmodulator - Google Patents
Mehrkanal-PulsbreitenmodulatorInfo
- Publication number
- DE60321278D1 DE60321278D1 DE60321278T DE60321278T DE60321278D1 DE 60321278 D1 DE60321278 D1 DE 60321278D1 DE 60321278 T DE60321278 T DE 60321278T DE 60321278 T DE60321278 T DE 60321278T DE 60321278 D1 DE60321278 D1 DE 60321278D1
- Authority
- DE
- Germany
- Prior art keywords
- pulse width
- width modulator
- channel pulse
- channel
- modulator
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/001—Digital control of analog signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
-
- 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
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
- H03M1/662—Multiplexed conversion systems
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
- H03M1/70—Automatic control for modifying converter range
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
- H03M1/82—Digital/analogue converters with intermediate conversion to time interval
- H03M1/822—Digital/analogue converters with intermediate conversion to time interval using pulse width modulation
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020046332A KR100932501B1 (ko) | 2002-08-06 | 2002-08-06 | 멀티 채널 펄스 폭 변조기에서의 채널별 게인 조절장치 |
KR1020020046897A KR100906427B1 (ko) | 2002-08-08 | 2002-08-08 | 멀티 채널 펄스 폭 변조기에서의 채널별 온/오프제어장치 |
KR10-2002-0047335A KR100538361B1 (ko) | 2002-08-10 | 2002-08-10 | 멀티 채널 펄스 폭 변조기에서의 노이즈 제거장치 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE60321278D1 true DE60321278D1 (de) | 2008-07-10 |
Family
ID=30449204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60321278T Expired - Lifetime DE60321278D1 (de) | 2002-08-06 | 2003-08-06 | Mehrkanal-Pulsbreitenmodulator |
Country Status (4)
Country | Link |
---|---|
US (1) | US7580532B2 (de) |
EP (1) | EP1388943B1 (de) |
CN (1) | CN100521818C (de) |
DE (1) | DE60321278D1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US7706438B1 (en) * | 2004-01-29 | 2010-04-27 | Cirrus Logic, Inc. | Circuits and methods for reducing noise and distortion in pulse width modulation systems |
US7215272B2 (en) * | 2004-04-16 | 2007-05-08 | Ying Lau Lee | Schemes to implement multi-level PWM in digital system |
KR100739786B1 (ko) * | 2006-01-20 | 2007-07-13 | 삼성전자주식회사 | 다중 채널 디지털 앰프 시스템 및 그 신호 처리 방법 |
KR100728041B1 (ko) * | 2006-06-23 | 2007-06-14 | 삼성전자주식회사 | 디지털 pwm 신호를 저장 재생하는 오디오 시스템 및 그방법 |
TWI397805B (zh) * | 2009-11-11 | 2013-06-01 | Giga Byte Tech Co Ltd | 電路系統及其控制方法 |
US8618875B2 (en) | 2011-12-20 | 2013-12-31 | Blackberry Limited | Using a new synchronization scheme for a multi-channel class-D amplifier |
JP6830437B2 (ja) | 2014-12-10 | 2021-02-17 | リージェンツ オブ ザ ユニバーシティ オブ ミネソタ | 疾患を処置するための遺伝子改変された細胞、組織および臓器 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6047771B2 (ja) * | 1977-09-20 | 1985-10-23 | ソニー株式会社 | 増幅器の過負荷保護装置 |
US4641361A (en) * | 1985-04-10 | 1987-02-03 | Harris Corporation | Multi-band automatic gain control apparatus |
CN87107022A (zh) | 1986-10-13 | 1988-05-18 | 株式会社半导体能源研究所 | 液晶器件的制造方法 |
US5771301A (en) * | 1994-09-15 | 1998-06-23 | John D. Winslett | Sound leveling system using output slope control |
US5796359A (en) * | 1995-10-25 | 1998-08-18 | Norand Corporation | Data conversion and processing system |
KR0182501B1 (ko) * | 1996-06-12 | 1999-04-15 | 김광호 | 하드디스크드라이버의 채널특성 파라메타 측정장치 |
US6298025B1 (en) * | 1997-05-05 | 2001-10-02 | Warner Music Group Inc. | Recording and playback of multi-channel digital audio having different resolutions for different channels |
KR100268476B1 (ko) | 1997-12-30 | 2000-10-16 | 윤종용 | 광디스크 재생기기의 오디오 채널 볼륨 제어방법 |
JP4089020B2 (ja) | 1998-07-09 | 2008-05-21 | ソニー株式会社 | オーディオ信号処理装置 |
KR100466265B1 (ko) | 1998-11-24 | 2005-06-28 | 주식회사 대우일렉트로닉스 | 디지털비디오디스크플레이어에서의오디오출력선택장치 |
EP1028524B1 (de) | 1999-02-11 | 2004-08-18 | STMicroelectronics S.r.l. | PWM Leistungsverstärker mit digitalem Eingang |
US6107876A (en) * | 1999-04-13 | 2000-08-22 | Ravisent Technologies, Inc. | Digital input switching audio power amplifier |
JP2002096503A (ja) * | 1999-12-22 | 2002-04-02 | Fuji Photo Film Co Ltd | 多チャンネルパルス幅変調装置及びダウンカウンタ |
KR20010095927A (ko) | 2000-04-12 | 2001-11-07 | 오종훈 | 펄스변조 신호의 효과적인 스위칭 파워 증폭을 위한 에러보정 방법 |
JP2001318745A (ja) * | 2000-05-11 | 2001-11-16 | Sony Corp | データ処理装置およびデータ処理方法、並びに記録媒体 |
US6429737B1 (en) * | 2000-07-06 | 2002-08-06 | Stmicroelectronics, Inc. | Method and apparatus for multi-channel digital amplification |
DE60029097T2 (de) | 2000-08-04 | 2007-06-14 | Stmicroelectronics S.R.L., Agrate Brianza | Pulscodemodulation/Pulsbreitenmodulation-Umsetzer mit Pulsbreitenmodulation-Leistungsverstärker |
DE60211872T2 (de) * | 2001-03-26 | 2006-10-26 | Harman International Industries, Incorporated, Northridge | Pulsbreitemodulationsverstärker mit digitalem signalprozessor |
KR200262157Y1 (ko) | 2001-07-11 | 2002-03-18 | 주식회사 빅빔 | 디지털다기능 디스크 플레이어 겸용 디지털 리시버 |
-
2003
- 2003-07-29 US US10/628,380 patent/US7580532B2/en not_active Expired - Fee Related
- 2003-08-06 DE DE60321278T patent/DE60321278D1/de not_active Expired - Lifetime
- 2003-08-06 CN CNB031555217A patent/CN100521818C/zh not_active Expired - Fee Related
- 2003-08-06 EP EP03017545A patent/EP1388943B1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN100521818C (zh) | 2009-07-29 |
CN1496188A (zh) | 2004-05-12 |
EP1388943A1 (de) | 2004-02-11 |
US20040028243A1 (en) | 2004-02-12 |
US7580532B2 (en) | 2009-08-25 |
EP1388943B1 (de) | 2008-05-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |