KR20010069133A - 광디스크의 편심량 측정장치 및 측정방법 - Google Patents
광디스크의 편심량 측정장치 및 측정방법 Download PDFInfo
- Publication number
- KR20010069133A KR20010069133A KR1020000001407A KR20000001407A KR20010069133A KR 20010069133 A KR20010069133 A KR 20010069133A KR 1020000001407 A KR1020000001407 A KR 1020000001407A KR 20000001407 A KR20000001407 A KR 20000001407A KR 20010069133 A KR20010069133 A KR 20010069133A
- Authority
- KR
- South Korea
- Prior art keywords
- optical disc
- eccentricity
- servo
- measuring
- error signal
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 230000004913 activation Effects 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0953—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0945—Methods for initialising servos, start-up sequences
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims (8)
- 광디스크 재생방법에 있어서,트래킹 서보의 활성화 상태에서, 광디스크를 회전구동시키는 제 1단계;상기 제 1단계로 부터 출력되는 트래킹 에러신호의 센터값을 검출하여 이를 기준값으로 설정하는 제 2단계; 및상기 기준값 설정 직후 출력되는 상기 트래킹 에러신호와 상기 설정된 기준값을 비교하여 이로 부터 상기 광디스크의 편심량을 측정하는 제 3단계를 포함하여 이루어지는 광디스크의 편심량 측정방법.
- 제 1항에 있어서,상기 제 3단계는, 상기 기준값 설정 직후 출력되는 상기 트래킹 에러신호의 상기 기준값으로 부터의 + 및 -방향으로의 치우침 정도를 검출하여 이로 부터 상기 광디스크의 편심량을 측정하는 것을 특징으로 하는 광디스크의 편심량 측정방법.
- 제 1항에 있어서,상기 광디스크의 고배속 제어시, 상기 측정된 편심량에 근거하여 상기 광디스크에 대해 보상동작을 수행하는 제 4단계를 더 포함하여 이루어지는 것을 특징으로 하는 광디스크의 편심량 측정방법.
- 제 3항에 있어서,상기 제 4단계의 보상동작은, 상기 측정된 편심량에 근거하여 서보계의 동작특성을 가변설정하는 것을 특징으로 하는 광디스크의 편심량 측정방법.
- 제 4항에 있어서,상기 서보계의 동작특성 가변설정은, 상기 측정된 편심량에 근거하여 트래킹 서보의 게인을 가변설정하는 것을 특징으로 하는 광디스크의 편심량 측정방법.
- 제 3항에 있어서,상기 제 4단계의 보상동작은, 상기 측정된 편심량에 근거하여 상기 광디스크의 배속을 상기 고배속 보다 낮은 배속으로 제어하는 것을 특징으로 하는 광디스크의 편심량 측정방법.
- 광디스크 재생방법에 있어서,트래킹 서보의 활성화 상태에서, 광디스크를 회전구동시키는 제 1단계;상기 광디스크의 회전구동에 따라 출력되는 트래킹 에러신호의 크기를 검출하는 제 2단계; 및상기 검출된 신호크기로 부터 상기 광디스크의 편심량을 측정하는 제 3단계를 포함하여 이루어지는 광디스크의 편심량 측정방법.
- 광디스크를 회전구동시키는 구동수단;상기 광디스크 상의 기록신호를 검출하는 독출수단;상기 회전구동되는 광디스크에 대해 상기 독출수단의 포커싱 및 트래킹 서보를 수행하는 서보수단; 및상기 독출수단에 대한 상기 서보수단의 서보동작이 모든 활성화된 상태에서, 트래킹 에러신호의 크기를 검출하여 이로 부터 상기 광디스크의 편심량을 측정하는 제어수단을 포함하여 구성되는 광디스크의 편심량 측정장치.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000001407A KR100622194B1 (ko) | 2000-01-12 | 2000-01-12 | 광디스크의 편심량 측정장치 및 측정방법 |
US09/758,364 US6700844B2 (en) | 2000-01-12 | 2001-01-12 | Method and apparatus for measuring the eccentricity of an optical disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000001407A KR100622194B1 (ko) | 2000-01-12 | 2000-01-12 | 광디스크의 편심량 측정장치 및 측정방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20010069133A true KR20010069133A (ko) | 2001-07-23 |
KR100622194B1 KR100622194B1 (ko) | 2006-09-07 |
Family
ID=19638142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020000001407A KR100622194B1 (ko) | 2000-01-12 | 2000-01-12 | 광디스크의 편심량 측정장치 및 측정방법 |
Country Status (2)
Country | Link |
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US (1) | US6700844B2 (ko) |
KR (1) | KR100622194B1 (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100622194B1 (ko) * | 2000-01-12 | 2006-09-07 | 엘지전자 주식회사 | 광디스크의 편심량 측정장치 및 측정방법 |
KR100829012B1 (ko) * | 2001-10-12 | 2008-05-14 | 엘지전자 주식회사 | 광디스크의 트랙킹 제어장치 |
JP2004030720A (ja) * | 2002-06-21 | 2004-01-29 | Mitsumi Electric Co Ltd | ディスク駆動装置の偏重心ディスク検知方法及びディスク駆動装置 |
TWI231490B (en) * | 2003-09-12 | 2005-04-21 | Mediatek Inc | Method for detecting eccentric disk and device thereof |
US7352669B2 (en) * | 2004-07-13 | 2008-04-01 | Micro-Star International Co., Ltd. | Method and device for disc rotation control in an optical storage system based on detected extent of disc warping |
JP4212504B2 (ja) * | 2004-03-31 | 2009-01-21 | 株式会社東芝 | ピックアップ制御装置および光ディスク装置 |
US20060011547A1 (en) * | 2004-07-13 | 2006-01-19 | Bell Stephen A | Methods of separating components in treatment fluids |
WO2006109684A1 (ja) * | 2005-04-08 | 2006-10-19 | Pioneer Corporation | 記録装置及び方法、再生装置及び方法、記録再生装置及び方法、並びにコンピュータプログラム |
US7539091B2 (en) * | 2005-11-18 | 2009-05-26 | Lsi Corporation | Differential push-pull gain controlling method and apparatus to reduce the effects of rotational eccentricity |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2742443B2 (ja) * | 1989-04-27 | 1998-04-22 | オリンパス光学工業株式会社 | トラッキングサーボループのループゲイン調整装置 |
JPH0935434A (ja) * | 1995-07-14 | 1997-02-07 | Nippon Columbia Co Ltd | 光ディスク再生装置 |
KR0183734B1 (ko) * | 1995-09-12 | 1999-04-15 | 김광호 | 광디스크 재생기의 자동 트랙편심 추적 장치 |
KR100271569B1 (ko) * | 1997-08-25 | 2000-11-15 | 구자홍 | 편심억압서보방법및이를이용한서보장치 |
US6606286B1 (en) * | 1998-01-05 | 2003-08-12 | Mitburri Electric Co., Ltd | Tln signal generating apparatus used in optical disc drive and optical disc drive equipped with the apparatus, and optical disc drive equipped with amplitude adjusting apparatus for tracking error signal |
JP3819138B2 (ja) * | 1998-01-30 | 2006-09-06 | 株式会社東芝 | ディスク再生装置とその制御方法 |
KR20010017374A (ko) * | 1999-08-11 | 2001-03-05 | 윤종용 | 광디스크 기기의 편심/편향 보정 장치 |
KR100622194B1 (ko) * | 2000-01-12 | 2006-09-07 | 엘지전자 주식회사 | 광디스크의 편심량 측정장치 및 측정방법 |
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2000
- 2000-01-12 KR KR1020000001407A patent/KR100622194B1/ko not_active IP Right Cessation
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2001
- 2001-01-12 US US09/758,364 patent/US6700844B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR100622194B1 (ko) | 2006-09-07 |
US20010019524A1 (en) | 2001-09-06 |
US6700844B2 (en) | 2004-03-02 |
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