Optical disk and optical method
First Claim
1. An optical disk comprising first information relating to unique information given to a specific optical disk manufacturer or a specific optical disk and second information of identifying an illegitimate optical disk manufacturer or an illegitimate optical disk are recorded in advance, whereinsaid optical disk comprises an area in which encrypted data encrypted based on said first and second information is recorded in advance or an area capable of recording the data to be encrypted based on said first and second information.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical disk according to the present invention is the optical disk on which secret information on unique information given to a specific optical disk manufacturer or a specific optical disk and information recorded on an infringement disk list of identifying an illegitimate optical disk manufacturer or an illegitimate optical disk are recorded in advance, and the optical disk has an area in which reproduction-only encrypted data encrypted based on the secret information and the information on the infringement disk list is recorded in advance or an area capable of recording the encrypted data to be encrypted based on the secret information and the information on the infringement disk list.
16 Citations
8 Claims
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1. An optical disk comprising first information relating to unique information given to a specific optical disk manufacturer or a specific optical disk and second information of identifying an illegitimate optical disk manufacturer or an illegitimate optical disk are recorded in advance, wherein
said optical disk comprises an area in which encrypted data encrypted based on said first and second information is recorded in advance or an area capable of recording the data to be encrypted based on said first and second information.
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5. An optical disk drive, comprising:
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first information deciphering means of deciphering the first information relating to unique information given to a specific optical disk manufacturer or specific optical disk recorded on the optical disk, second information storage means of obtaining second information of identifying an illegitimate optical disk manufacturer or illegitimate optical disk, first determination of determining whether or not said optical disk is illegitimate based on the deciphering results of said first information deciphering means and storage contents of said second information storage means, and control means of controlling reproduction of the data from said optical disk and/or recording of the data on said optical disk based on the determination result of said determination means. - View Dependent Claims (6, 7, 8)
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Specification