Invention Grant
- Patent Title: Unauthorized contents detection system
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Application No.: US14595447Application Date: 2015-01-13
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Publication No.: US09270470B2Publication Date: 2016-02-23
- Inventor: Masao Nonaka , Yuichi Futa , Toshihisa Nakano , Kaoru Yokota , Motoji Ohmori , Masaya Miyazaki , Masaya Yamamoto , Kaoru Murase , Senichi Onoda
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- 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 ; H04L9/32 ; G06F21/10 ; G06F21/62 ; G06F21/64 ; G06F11/30 ; G06F12/00 ; 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
- US20150127948A1 UNAUTHORIZED CONTENTS DETECTION SYSTEM Public/Granted day:2015-05-07
Information query
