Invention Grant
US08645710B2 Information processing apparatus, information storage medium, content management system, data processing method, and computer program
有权
信息处理装置,信息存储介质,内容管理系统,数据处理方法和计算机程序
- Patent Title: Information processing apparatus, information storage medium, content management system, data processing method, and computer program
- Patent Title (中): 信息处理装置,信息存储介质,内容管理系统,数据处理方法和计算机程序
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Application No.: US11574651Application Date: 2005-08-30
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Publication No.: US08645710B2Publication Date: 2014-02-04
- Inventor: Kenjiro Ueda , Tateo Oishi , Yoshitomo Osawa , Katsumi Muramatsu , Motoki Kato , Yoshikazu Takashima
- Applicant: Kenjiro Ueda , Tateo Oishi , Yoshitomo Osawa , Katsumi Muramatsu , Motoki Kato , Yoshikazu Takashima
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JPP2004-255153 20040902
- International Application: PCT/JP2005/015812 WO 20050830
- International Announcement: WO2006/025414 WO 20060309
- Main IPC: G06F21/00
- IPC: G06F21/00

Abstract:
A configuration for achieving efficient content verification processing based on hash values is provided. Hash values of hash units set as segmented data of a content stored on an information storage medium are recorded in a content hash table and are stored on the information storage medium together with the content. An information processing apparatus for executing content playback executes hash-value comparison processing based on one or more randomly selected hash values. Regardless of the data amount of content, the configuration can perform hash-value determination and comparison processing based on hash units having a small amount of data, so that user equipment for executing content playback can perform efficient content verification.
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