KR20090021396A - 광디스크 매체 및 광디스크 장치 - Google Patents
광디스크 매체 및 광디스크 장치 Download PDFInfo
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- KR20090021396A KR20090021396A KR1020097001725A KR20097001725A KR20090021396A KR 20090021396 A KR20090021396 A KR 20090021396A KR 1020097001725 A KR1020097001725 A KR 1020097001725A KR 20097001725 A KR20097001725 A KR 20097001725A KR 20090021396 A KR20090021396 A KR 20090021396A
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
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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
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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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24308—Metals or metalloids transition metal elements of group 11 (Cu, Ag, Au)
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/2431—Metals or metalloids group 13 elements (B, Al, Ga, In)
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
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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
- G11B7/0901—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 for track following only
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Abstract
Description
Claims (20)
- 정보 피트가 원 형상 또는 나선(spiral) 형상으로 배열된 광디스크 매체에 있어서,상기 광디스크 매체의 반경 방향으로 상기 정보 피트의 주기적인 깊이 변화를 갖는 것을 특징으로 하는 광디스크 매체.
- 제 1 항에 있어서,상기 정보 피트 폭은, 상기 광디스크 매체를 이용하여 기록 재생을 행하는 광디스크 장치의 광학 사양인 대물 렌즈의 개구수 NA와 사용 파장 λ에 의해 결정되는 집광 스폿의 회절 한계인 λ/(4×NA) 이하인 것을 특징으로 하는 광디스크 매체.
- 제 2 항에 있어서,상기 정보 피트가 상기 원 형상 또는 나선 형상으로 배열되는 방향으로의 상기 정보 피트는 상기 광디스크 매체를 이용하여 기록 재생을 행하는 광디스크 장치의 광학 사양인 대물 렌즈의 개구수 NA와 사용 파장 λ에 의해 결정되는 집광 스폿의 회절 한계인 λ/(4×NA) 이하의 길이의 것이 포함되는 것을 특징으로 하는 광디 스크 매체.
- 제 1 항에 있어서,상기 정보 피트의 깊이 변화의 주기는 상기 광디스크 매체를 이용하여 기록 재생을 행하는 광디스크 장치의 광학 사양인 대물 렌즈의 개구수 NA와 사용 파장 λ에 의해 결정되는 집광 스폿의 회절 한계인 λ/(2×NA) 이상인 것을 특징으로 하는 광디스크 매체.
- 제 4 항에 있어서,상기 정보 피트의 깊이 변화의 주기는 대략 0.32㎛인 것을 특징으로 하는 광디스크 매체.
- 제 4 항에 있어서,상기 정보 피트의 깊이 변화의 주기는 대략 0.74㎛인 것을 특징으로 하는 광디스크 매체.
- 제 4 항에 있어서,상기 정보 피트의 깊이 변화의 주기는 대략 1.6㎛인 것을 특징으로 하는 광디스크 매체.
- 제 1 항에 있어서,상기 피트열의 구조를 갖는 광디스크 기판 상에, 광의 강도에 대하여 비선형인 광의 투과율 특성을 갖는 광 흡수 재료가 적어도 1층 적층되어 있는 것을 특징으로 하는 광디스크 매체.
- 제 2 항에 있어서,상기 피트열의 구조를 갖는 광디스크 기판 상에, 광의 강도에 대하여 비선형인 광의 투과율 특성을 갖는 광 흡수 재료가 적어도 1층 적층되어 있는 것을 특징으로 하는 광디스크 매체.
- 제 3 항에 있어서,상기 피트열의 구조를 갖는 광디스크 기판 상에, 광의 강도에 대하여 비선형 인 광의 투과율 특성을 갖는 광 흡수 재료가 적어도 1층 적층되어 있는 것을 특징으로 하는 광디스크 매체.
- 제 4 항에 있어서,상기 피트열의 구조를 갖는 광디스크 기판 상에, 광의 강도에 대하여 비선형인 광의 투과율 특성을 갖는 광 흡수 재료가 적어도 1층 적층되어 있는 것을 특징으로 하는 광디스크 매체.
- 제 8 항 내지 제 11 항 중 어느 한 항에 있어서,상기 광 흡수 재료는 Sb 또는 Te를 함유하는 것을 특징으로 하는 광디스크 매체.
- 제 8 항 내지 제 11 항 중 어느 한 항에 있어서,상기 광 흡수 재료는 ZnO, SnO2, TiO2, Ta2O3 중 적어도 어느 하나의 금속 산화물을 함유하는 것을 특징으로 하는 광디스크 매체.
- 제 1 항에 있어서,원 형상 또는 나선 형상으로 배열된 상기 정보 피트로 구성되는 세트 트랙은, 적어도 1주마다 트랙 전환부를 갖고, 상기 트랙 전환부에 적어도 어드레스 정보나 트랙킹 제어 정보를 포함하는 헤더부가 마련되어 있는 것을 특징으로 하는 광디스크 매체.
- 제 14 항에 있어서,상기 정보 피트가 제 1 피트 깊이 및 제 2 피트 깊이를 갖고, 또한 상기 정보 피트의 깊이 변화의 주기 A를 갖는 광디스크 매체로서,상기 트랙 전환부에서, 상기 정보 피트열이 상기 주기 Λ의 절반만큼 시프트된 정보 피트열과 연결되어 있는 것을 특징으로 하는 광디스크 매체.
- 제 14 항에 있어서,상기 정보 피트가 제 1 피트 깊이 및 제 2 피트 깊이를 갖고, 또한 상기 정보 피트의 깊이 변화의 주기 Λ를 갖는 광디스크 매체로서,상기 트랙 전환부에서, 상기 정보 피트열이 이것에 인접하는 정보 피트열과 연결되어 있는 것을 특징으로 하는 광디스크 매체.
- 제 1 항 내지 제 11 항 중 어느 한 항에 있어서,상기 피트열의 깊이에서 발생하는 광의 위상차가 대략 2λ/16~대략 6λ/16인 것을 특징으로 하는 광디스크 매체.
- 청구항 8 내지 11 중 어느 한 항에 기재된 광디스크 매체를 기록 재생하는 광디스크 장치에 있어서,상기 광디스크 장치의 상기 대물 렌즈에 의해 상기 광디스크 매체에 집광되는 집광 스폿의 일부에서의 광 강도는 상기 광 흡수 재료의 초해상 효과가 발생하는 임계값 이상인 것을 특징으로 하는 광디스크 장치.
- 청구항 2 내지 11 중 어느 한 항에 기재된 광디스크 매체를 기록 재생하는 광디스크 장치에 있어서,상기 광디스크 매체로부터 반사된 광에 대하여, 적어도 원 형상 또는 나선 형상으로 상기 정보 피트가 배열되는 방향에 평행한 분할선에 의해 분할된 분할 수광면을 갖고, 상기 분할 수광면으로부터 출력되는 전기 신호를 차분 연산하여 얻어지는 푸시풀 신호를 이용하여, 상기 집광 스폿의 트랙킹 위치 제어를 행하는 것을 특징으로 하는 광디스크 장치.
- 제 19 항에 있어서,각 정보 피트열의 위치에 대응하는 트랙킹 에러 신호의 극성 및 오프셋치를 설정함으로써 트랙킹 서보의 동작점을 전환하여 소망하는 정보 피트열에 상기 집광 스폿을 위치 제어하는 것을 특징으로 하는 광디스크 장치.
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EP (1) | EP2048663B1 (ko) |
JP (1) | JP4772870B2 (ko) |
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US8027241B2 (en) * | 2008-02-13 | 2011-09-27 | Thomson Licensing | Optical storage medium, mastering method and apparatus for reading of respective data |
EP2200027A1 (en) | 2008-12-22 | 2010-06-23 | Thomson Licensing | Optical disc, mastering method and apparatus for reading of respective data |
JP5627687B2 (ja) * | 2010-07-30 | 2014-11-19 | 三菱電機株式会社 | 光情報記録媒体及び駆動装置 |
JP2012243363A (ja) * | 2011-05-20 | 2012-12-10 | Sony Corp | 再生方法、再生装置 |
WO2014207972A1 (ja) | 2013-06-28 | 2014-12-31 | ソニー株式会社 | 光媒体再生装置および光媒体再生方法 |
JP6428619B2 (ja) | 2013-08-14 | 2018-11-28 | ソニー株式会社 | 光媒体再生装置および光媒体再生方法 |
JP6167918B2 (ja) | 2013-08-14 | 2017-07-26 | ソニー株式会社 | 光媒体再生装置および光媒体再生方法 |
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NL8103504A (nl) * | 1981-07-24 | 1983-02-16 | Philips Nv | Registratiedrager met een optisch uitleesbare informatiestructuur en inrichting voor het uitlezen daarvan. |
JPH0758551B2 (ja) * | 1986-06-18 | 1995-06-21 | 松下電器産業株式会社 | 光学的情報再生装置 |
US5805551A (en) * | 1994-04-18 | 1998-09-08 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium |
JP3063596B2 (ja) * | 1995-11-24 | 2000-07-12 | 三菱電機株式会社 | 光ディスク装置および光ディスク |
JP3418065B2 (ja) * | 1996-06-26 | 2003-06-16 | 三菱電機株式会社 | 光ディスク |
KR100269133B1 (ko) * | 1997-12-08 | 2000-10-16 | 윤종용 | 광디스크의 헤더 신호 판독방법 |
JP3544847B2 (ja) * | 1998-01-16 | 2004-07-21 | 三菱電機株式会社 | 光学的情報再生方法および装置 |
JP2000149331A (ja) * | 1998-11-02 | 2000-05-30 | Sony Corp | 光記録媒体、光記録媒体製造用原盤及び光記録再生装置 |
US6760299B1 (en) * | 1999-06-30 | 2004-07-06 | Sharp Kabushiki Kaisha | Optical disc having pits of different depth formed therein, optical disc device for reproducing the same, and method of reproduction |
AU2001269091A1 (en) * | 2000-07-07 | 2002-01-21 | Koninklijke Philips Electronics N.V. | Record carrier, playback apparatus and information system comprising a record carrier and a playback apparatus |
JP4582755B2 (ja) * | 2002-06-24 | 2010-11-17 | Tdk株式会社 | 光記録/再生方法および光記録媒体 |
JP4150808B2 (ja) | 2003-01-28 | 2008-09-17 | 独立行政法人産業技術総合研究所 | 光増幅方法 |
JP2005339795A (ja) | 2005-07-19 | 2005-12-08 | Sharp Corp | 光情報記録媒体、光情報記録媒体の再生方法および光情報再生装置 |
-
2007
- 2007-05-22 JP JP2008526695A patent/JP4772870B2/ja not_active Expired - Fee Related
- 2007-05-22 EP EP07743836A patent/EP2048663B1/en not_active Expired - Fee Related
- 2007-05-22 KR KR1020097001725A patent/KR101039194B1/ko active IP Right Grant
- 2007-05-22 US US12/375,138 patent/US8693295B2/en not_active Expired - Fee Related
- 2007-05-22 WO PCT/JP2007/060402 patent/WO2008012985A1/ja active Application Filing
Also Published As
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EP2048663A4 (en) | 2010-03-31 |
US20090303850A1 (en) | 2009-12-10 |
EP2048663B1 (en) | 2011-10-12 |
JPWO2008012985A1 (ja) | 2009-12-17 |
US8693295B2 (en) | 2014-04-08 |
EP2048663A1 (en) | 2009-04-15 |
KR101039194B1 (ko) | 2011-06-03 |
WO2008012985A1 (fr) | 2008-01-31 |
JP4772870B2 (ja) | 2011-09-14 |
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