发明授权
- 专利标题： Unauthorized contents detection system
- 专利标题（中）： 未经授权的内容检测系统
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申请号： US13011275申请日： 2011-01-21
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公开(公告)号： US08261084B2公开(公告)日： 2012-09-04
- 发明人: Masao Nonaka , Yuichi Futa , Toshihisa Nakano , Kaoru Yokota , Motoji Ohmori , Masaya Miyazaki , Masaya Yamamoto , Kaoru Murase , Senichi Onoda
- 申请人： Masao Nonaka , Yuichi Futa , Toshihisa Nakano , Kaoru Yokota , Motoji Ohmori , Masaya Miyazaki , Masaya Yamamoto , Kaoru Murase , Senichi Onoda
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth Lind & Ponack, L.L.P.
- 优先权： JP2004-110069 20040402; JP2004-146963 20040517; JP2004-151621 20040521; JP2004-163734 20040601; JP2004-196531 20040702; JP2004-201009 20040707; JP2004-206335 20040713
- 主分类号： G06F21/00
- IPC分类号： G06F21/00 ; H04L9/00 ; H04L9/32 ; H04K1/00 ; G06F11/30 ; G06F12/14
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.
公开/授权文献
- US20110119493A1 UNAUTHORIZED CONTENTS DETECTION SYSTEM 公开/授权日：2011-05-19
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