发明名称 |
UNAUTHORIZED CONTENTS DETECTION SYSTEM |
摘要 |
A data processing device for playing back a digital work reduces the processing load involved in verification by using only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on a DVD. In addition, the data processing device improves the accuracy of detecting unauthorized contents by randomly selecting a predetermined number of encrypted units every time the verification is performed.
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申请公布号 |
US2012290846(A1) |
申请公布日期 |
2012.11.15 |
申请号 |
US201213561250 |
申请日期 |
2012.07.30 |
申请人 |
NONAKA MASAO;FUTA YUICHI;NAKANO TOSHIHISA;YOKOTA KAORU;OHMORI MOTOJI;MIYAZAKI MASAYA;YAMAMOTO MASAYA;MURASE KAORU;ONODA SENICHI |
发明人 |
NONAKA MASAO;FUTA YUICHI;NAKANO TOSHIHISA;YOKOTA KAORU;OHMORI MOTOJI;MIYAZAKI MASAYA;YAMAMOTO MASAYA;MURASE KAORU;ONODA SENICHI |
分类号 |
H04L9/32;G06F21/00 |
主分类号 |
H04L9/32 |
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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