发明名称 |
OPTICAL DISK COPYING CONTROL SYSTEM |
摘要 |
FIELD: compact-disks; copyprotection and copying control mechanisms including record medium authentication. SUBSTANCE: information to be entered in record medium is scrambled using copyprotection key. Reference disk carrying modified subblock fields and scrambled information is generated. Record media are replicated using reference disk. Copyprotection key is entered during record medium generation by converting chosen quantity and addresses of blocks. In the process subblock fields of chosen blocks are modified during generation of reference disk and information is scrambled in other blocks. EFFECT: enhanced reliability of copyprotection. 17 cl, 9 dwg _ |
申请公布号 |
RU2229172(C2) |
申请公布日期 |
2004.05.20 |
申请号 |
RU19980116288 |
申请日期 |
1998.08.27 |
申请人 |
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发明人 |
BLAUKOVICH RAJNKHARD;VINTER ANDREAS |
分类号 |
G11B20/10;G06F1/00;G09C1/00;G11B7/26;G11B7/28;G11B20/00 |
主分类号 |
G11B20/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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