Title of Invention | AN OPTICAL DISK |
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Abstract | Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup. |
Full Text |
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Patent Number | 193011 | ||||||||||||
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Indian Patent Application Number | 812/MAS/1996 | ||||||||||||
PG Journal Number | 30/2009 | ||||||||||||
Publication Date | 24-Jul-2009 | ||||||||||||
Grant Date | 11-Mar-2005 | ||||||||||||
Date of Filing | 15-May-1996 | ||||||||||||
Name of Patentee | M/S. MATSUSHITA ELECTRIC INDUSTRIAL CO. LTD | ||||||||||||
Applicant Address | 1006, OAZA KADOMA, KA DOMA-SHI OSAKA 571 | ||||||||||||
Inventors:
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PCT International Classification Number | G 11 B 7/00 | ||||||||||||
PCT International Application Number | N/A | ||||||||||||
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PCT Conventions:
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