Invention Grant
- Patent Title: Unauthorized contents detection system
- Patent Title (中): 未经授权的内容检测系统
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Application No.: US13011275Application Date: 2011-01-21
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Publication No.: US08261084B2Publication Date: 2012-09-04
- Inventor: Masao Nonaka , Yuichi Futa , Toshihisa Nakano , Kaoru Yokota , Motoji Ohmori , Masaya Miyazaki , Masaya Yamamoto , Kaoru Murase , Senichi Onoda
- Applicant: Masao Nonaka , Yuichi Futa , Toshihisa Nakano , Kaoru Yokota , Motoji Ohmori , Masaya Miyazaki , Masaya Yamamoto , Kaoru Murase , Senichi Onoda
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth Lind & Ponack, L.L.P.
- Priority: JP2004-110069 20040402; JP2004-146963 20040517; JP2004-151621 20040521; JP2004-163734 20040601; JP2004-196531 20040702; JP2004-201009 20040707; JP2004-206335 20040713
- Main IPC: G06F21/00
- IPC: G06F21/00 ; H04L9/00 ; H04L9/32 ; H04K1/00 ; G06F11/30 ; G06F12/14
Abstract:
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.
Public/Granted literature
- US20110119493A1 UNAUTHORIZED CONTENTS DETECTION SYSTEM Public/Granted day:2011-05-19
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