Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
  • G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
  • G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph
• • 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
  • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
  • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
  • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
• • 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
  • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
  • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
• • 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
  • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
  • G11B7/0045—Recording
  • G11B7/00455—Recording involving reflectivity, absorption or colour changes

Landscapes

• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Optical Recording Or Reproduction (AREA)
• Optical Head (AREA)
• Laser Beam Processing (AREA)
• Optical Record Carriers And Manufacture Thereof (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=36602149

Family Applications (1)

Country Status (9)

Families Citing this family (2)

Family Cites Families (15)

• 2005
  • 2005-12-19 JP JP2007547753A patent/JP2008525930A/ja active Pending
  • 2005-12-19 US US11/721,561 patent/US20090251524A1/en not_active Abandoned
  • 2005-12-19 CN CN2005800445358A patent/CN101088118B/zh not_active Expired - Fee Related
  • 2005-12-19 WO PCT/IB2005/054310 patent/WO2006067726A2/en active Application Filing
  • 2005-12-19 EP EP05850884A patent/EP1831873B1/en not_active Not-in-force
  • 2005-12-19 DE DE602005025019T patent/DE602005025019D1/de active Active
  • 2005-12-19 AT AT05850884T patent/ATE489704T1/de not_active IP Right Cessation
  • 2005-12-19 KR KR1020077016479A patent/KR20070097516A/ko not_active Application Discontinuation
  • 2005-12-20 TW TW094145411A patent/TW200639070A/zh unknown

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