Invention Grant
US07991155B2 Backup management device, backup management method, computer program, recording medium, integrated circuit, and backup system
失效
备份管理设备，备份管理方法，计算机程序，记录介质，集成电路和备份系统
- Patent Title: Backup management device, backup management method, computer program, recording medium, integrated circuit, and backup system
- Patent Title (中): 备份管理设备，备份管理方法，计算机程序，记录介质，集成电路和备份系统
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Application No.: US11795958Application Date: 2006-01-30
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Publication No.: US07991155B2Publication Date: 2011-08-02
- Inventor: Soichiro Fujioka , Shunji Harada , Yoshikatsu Ito , Yuko Tsusaka , Motoji Ohmori , Toshihisa Nakano
- Applicant: Soichiro Fujioka , Shunji Harada , Yoshikatsu Ito , Yuko Tsusaka , Motoji Ohmori , Toshihisa Nakano
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2005-024301 20050131
- International Application: PCT/JP2006/301485 WO 20060130
- International Announcement: WO2006/080510 WO 20060803
- Main IPC: H04N7/167
- IPC: H04N7/167
Abstract:
To provide a backup management device that deletes a content so as to be restorable in the future while protecting a copyright of the content, in a case where there exists a backup of the content. In an HD recorder, a first information storage unit stores a content, a second information storage unit stores a backup of the content, a secure storage unit stores a hash value of the content. If receiving an instruction to delete the content so as to be restorable, a control unit deletes the content from the first information storage unit. When the content is played back, an encryption processing unit applies a calculation to the content to generate detection information, and the control unit compares the hash value with the detection information to judge whether the content has been tampered.
Public/Granted literature
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