KR20040013414A - 멀티 채널 펄스 폭 변조기에서의 채널별 게인 조절장치 - Google Patents
멀티 채널 펄스 폭 변조기에서의 채널별 게인 조절장치 Download PDFInfo
- Publication number
- KR20040013414A KR20040013414A KR1020020046332A KR20020046332A KR20040013414A KR 20040013414 A KR20040013414 A KR 20040013414A KR 1020020046332 A KR1020020046332 A KR 1020020046332A KR 20020046332 A KR20020046332 A KR 20020046332A KR 20040013414 A KR20040013414 A KR 20040013414A
- Authority
- KR
- South Korea
- Prior art keywords
- channel
- pulse width
- gain
- width modulator
- audio signal
- Prior art date
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10018—Improvement or modification of read or write signals analog processing for digital recording or reproduction
- G11B20/10027—Improvement or modification of read or write signals analog processing for digital recording or reproduction adjusting the signal strength during recording or reproduction, e.g. variable gain amplifiers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
- G11B20/1411—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol conversion to or from pulse width coding
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00007—Time or data compression or expansion
- G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2545—CDs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
Claims (3)
- 펄스 코드 변조(PCM) 방식의 멀티 채널 오디오 신호를, 펄스 폭 변조(PWM) 방식의 멀티 채널 오디오 신호로 변조 출력하기 위한 다수개의 펄스 폭 변조수단; 및상기 다수개의 펄스 폭 변조수단으로 입력되는 펄스 코드 변조(PCM) 방식의 멀티 채널 오디오 신호를, 각 채널에 따라 독립적으로 서로 다르게 게인 조절하기 위한 게인 조절수단이 포함 구성되는 것을 특징으로 하는 멀티 채널 펄스 폭 변조기에서의 채널별 게인 조절장치.
- 제1 항에 있어서,상기 게인 조절수단은,상기 펄스 폭 변조기로 입력되는 오디오 신호의 레벨을, 서로 다르게 가변 조절하기 위한 게인;상기 게인을 통해 출력되는 오디오 신호의 레벨과 기준 레벨을 비교하기 위한 비교기;상기 비교기의 출력에 따라, 상기 게인을 가변 조절하기 위한 제어신호를 출력하는 자동 이득 조절기; 및상기 자동 이득 조절기로부터 출력되는 제어신호와, 각 채널별 볼륨 조절신호를 합산 또는 감산하여, 각 채널별 게인을 독립적으로 가변 조절하기 위한 합산기가 포함 구성되는 것을 특징으로 하는 멀티 채널 펄스 폭 변조기에서의 채널별 온/오프 제어장치.
- 제2 항에 있어서,상기 게인과 비교기 및 합산기는, 각 채널별 펄스 폭 변조기의 숫자만큼 포함 구성되는 것을 특징으로 하는 멀티 채널 펄스 폭 변조기에서의 채널별 온/오프 제어장치.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020046332A KR100932501B1 (ko) | 2002-08-06 | 2002-08-06 | 멀티 채널 펄스 폭 변조기에서의 채널별 게인 조절장치 |
US10/628,380 US7580532B2 (en) | 2002-08-06 | 2003-07-29 | Multi-channel pulse width modulation apparatus |
CNB031555217A CN100521818C (zh) | 2002-08-06 | 2003-08-06 | 多信道脉宽调制设备 |
DE60321278T DE60321278D1 (de) | 2002-08-06 | 2003-08-06 | Mehrkanal-Pulsbreitenmodulator |
EP03017545A EP1388943B1 (en) | 2002-08-06 | 2003-08-06 | Multi-channel pulse width modulation apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020046332A KR100932501B1 (ko) | 2002-08-06 | 2002-08-06 | 멀티 채널 펄스 폭 변조기에서의 채널별 게인 조절장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040013414A true KR20040013414A (ko) | 2004-02-14 |
KR100932501B1 KR100932501B1 (ko) | 2009-12-17 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020020046332A KR100932501B1 (ko) | 2002-08-06 | 2002-08-06 | 멀티 채널 펄스 폭 변조기에서의 채널별 게인 조절장치 |
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KR (1) | KR100932501B1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220002054U (ko) | 2021-02-16 | 2022-08-23 | 최기봉 | 낮과 밤을 구분하는 벽걸이형 시계 |
CN116470870A (zh) * | 2023-04-19 | 2023-07-21 | 广州市迪士普音响科技有限公司 | 一种针对多通道增益的调节方法、装置和系统 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5771301A (en) * | 1994-09-15 | 1998-06-23 | John D. Winslett | Sound leveling system using output slope control |
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 |
DE69829852T2 (de) * | 1998-11-13 | 2006-03-02 | Stmicroelectronics S.R.L., Agrate Brianza | Pulsbreitenmodulierter Brückenverstärker mit konfigurierbarem Eingangsnetzwerk für analogen oder digitalen Eingang ohne Verwendung eines Dreieckwellengenerators |
DE69919500T2 (de) * | 1999-02-11 | 2005-09-08 | Stmicroelectronics S.R.L., Agrate Brianza | PWM Leistungsverstärker mit digitalem Eingang |
EP1178388B1 (en) * | 2000-08-04 | 2006-06-28 | STMicroelectronics S.r.l. | PCM/PWM converter with PWM power amplifier |
KR200262157Y1 (ko) * | 2001-07-11 | 2002-03-18 | 주식회사 빅빔 | 디지털다기능 디스크 플레이어 겸용 디지털 리시버 |
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2002
- 2002-08-06 KR KR1020020046332A patent/KR100932501B1/ko active IP Right Grant
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220002054U (ko) | 2021-02-16 | 2022-08-23 | 최기봉 | 낮과 밤을 구분하는 벽걸이형 시계 |
CN116470870A (zh) * | 2023-04-19 | 2023-07-21 | 广州市迪士普音响科技有限公司 | 一种针对多通道增益的调节方法、装置和系统 |
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KR100932501B1 (ko) | 2009-12-17 |
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