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Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk

An optical disc device, optical disc technology, applied in optical recording/reproducing/erasing methods, digital recording/reproducing, recording/reproducing with optical methods, etc.

Inactive Publication Date: 2006-12-20
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, if pirated discs are made by methods not described above, these methods are completely ineffective

Method used

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  • Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk
  • Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk
  • Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk

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Embodiment Construction

[0060] (1-1) Structure in an embodiment

[0061] Hereinafter, referring to the accompanying drawings, an apparatus and method for manufacturing an optical disc, and an optical disc according to an embodiment of the present invention will be described in detail.

[0062] First, refer to figure 1 , describing an apparatus and method for manufacturing an optical disc according to an embodiment of the present invention. In this embodiment, the apparatus for manufacturing optical discs is an apparatus for manufacturing compact discs (CDs). exist figure 1 The digital audio signal SA reproduced from the tape by the digital tape recorder is provided to the first encryption circuit 22, and the digital audio information SA is encrypted according to the first key information signal KY1 provided by the first key information generation circuit 24. The encrypted digital audio signal SB from the first encryption circuit 22 is supplied to the second encryption circuit 23 , and the signal S...

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Abstract

Described herewith is an optical disk manufacturing apparatus for reading recorded digital data from an optical disk, comprising an encryption unit for encrypting entered digital data according to a plurality of key information; an optical disk substrate manufacturing unit for manufacturing an optical disk substrate on which the encrypted digital data and key information are recorded in the form of physical form changes; a reflection film forming unit for forming a reflection film on the optical disk substrate ; and a key information recording unit for recording key information on the optical disk substrate on which the reflection film is formed. The reflection factor of the optical disk is changed locally, thereby giving a jitter to the position information of each pit edge, and desired data is recorded additionally according to this jitter. Pits, etc. are disposed so as to be deviated from the track center towards the inner / outer region of the optical disk , thereby recording such sub-data as key information KY, etc.

Description

[0001] This application is a divisional application of the invention patent application with the application number 200610074118.4, the filing date is October 8, 1999, and the invention title is "Optical Disc and Device and Method for Manufacturing Optical Disc, Recording or Reproducing Optical Disc Data". technical field [0002] The present invention relates to an apparatus and method for manufacturing an optical disc, an apparatus and method for recording data on an optical disc, an apparatus and method for reproducing data from an optical disc, and an optical disc. For example, the present invention can be applied to a CD disc (COMPACT DISK), a CD player, an optical disc for recording audio data, and a recording apparatus and a reproducing apparatus applicable to an optical disc. Background technique [0003] The present invention locally changes the reflectivity of the optical disc, thereby giving a jitter to the positioning information of each pit edge, thereby addition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/00G11B7/004G11B20/10G11B7/24035G11B7/24085G11B7/2433G11B7/26G11B19/04
Inventor 小林诚司藤木敏宏
Owner SONY CORP