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Techniques for forming burst cutting area mark

a technology of burst cutting and area marks, which is applied in the field of optical recording media, can solve the problems of large expense of bca marking equipment, cost and time added to each process,

Inactive Publication Date: 2006-12-07
CINRAM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0023] The techniques of this application can be used in manufacturing of read-only type discs, recordable discs, rewritable

Problems solved by technology

However, each process adds cost and time to the process and the large expense of BCA marking equipment (approximately $500k per BCA writer).

Method used

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  • Techniques for forming burst cutting area mark
  • Techniques for forming burst cutting area mark
  • Techniques for forming burst cutting area mark

Examples

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Embodiment Construction

[0029] The following discussion of exemplary embodiments of the techniques of this application is set forth to aid in an understanding of the subject matter of this disclosure, but is not intended, and should not be construed, to limit in any way the scope of this disclosure. Therefore, while specific terminology is employed for the sake of clarity in describing some exemplary embodiments, the present disclosure is not intended to be limited to the specific terminology so selected, and it is to be understood that each specific element includes all technical equivalents thereof.

[0030] The techniques of this disclosure include adding data to a burst cutting area (BCA) prior to molding which can be readable by the optical disc drive, such as for authentication purposes. This application provides tools (in the form of methodologies, apparatuses, and systems) for applying a burst cutting area (BCA) mark or code prior to molding of the optical recording media, such as onto a mastering su...

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Abstract

A BCA mark is applied prior to molding of optical recording media. A stamper including a BCA code is formed. The stamper including the BCA code is used in the molding of optical recording discs. This technique can be used in manufacturing of read-only type discs, recordable discs, rewritable discs, hybrid discs, discs readable from both disc sides, discs having multiple information layers, high-density discs, etc.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of U.S. Provisional Application No. 60 / 687,101, filed Jun. 3, 2005 and entitled “METHOD AND APPARATUS FOR APPLYING BURST CUTTING AREA MARK PRIOR TO REPLICATION”.TECHNICAL FIELD [0002] This application relates to optical recording media. In particular, the application relates to application of a burst cutting area (BCA) mark prior to molding of the optical recording media. DESCRIPTION OF RELATED ART [0003] Use of CDs (compact discs) and DVDs (digital versatile discs or digital video discs) as optical storage media (“optical disc”) for storing and transporting content (such as audio, video, graphics, computer software, etc.) in an optically readable manner has been popular for a number of years. Several formats of optical discs are currently available, including (A) read-only formats such as CD-DA (digital audio compact disc), CD-ROM (CD-read-only memory), DVD-ROM, and other formats wherein content is pr...

Claims

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Application Information

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IPC IPC(8): G11B15/52
CPCG11B7/00736G11B7/261G11B20/1217G11B20/00115G11B20/00768G11B7/263
Inventor MUSTO, JAMES J.MYRTLE, JAMES
Owner CINRAM GRP
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