Invention Grant
- Patent Title: Information recording medium, information processing device, information processing method, and computer program
- Patent Title (中): 信息记录介质,信息处理装置,信息处理方法和计算机程序
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Application No.: US10515271Application Date: 2004-03-05
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Publication No.: US07734047B2Publication Date: 2010-06-08
- Inventor: Tsuyoshi Nakayama , Chikako Mori , Yoshimichi Kitaya , Yoshikazu Kouno
- Applicant: Tsuyoshi Nakayama , Chikako Mori , Yoshimichi Kitaya , Yoshikazu Kouno
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- Priority: JP2003-079827 20030324
- International Application: PCT/JP2004/002921 WO 20040305
- International Announcement: WO2004/086231 WO 20041007
- Main IPC: H04N7/167
- IPC: H04N7/167

Abstract:
There are provided an information recording medium, an information processing apparatus, an information processing method, and a computer program, which can realize users' convenience for using content in accordance with a license and copyright protection. An information recording medium stores an encrypted content file including encrypted content, usage right information of the encrypted content, and encryption key information necessary for a decrypting process for the encrypted content. Thus, a user can acquire a license (usage right information) and key information necessary for decryption of the content, together with the content, from the information recording medium, without acquiring the license (usage rights) by connection to a license provider. Therefore, it is no longer necessary to perform a process of acquiring the license (usage rights) from the license provider when the content is to be used, whereby user convenience is improved, and license-based content copyright management can also be ensured.
Public/Granted literature
Information query