发明名称 |
CONTENT INFORMATION PROVIDING SYSTEM, CONTENT INFORMATION PROVIDING SERVER, CONTENT REPRODUCTION APPARATUS, CONTENT INFORMATION PROVIDING METHOD, CONTENT REPRODUCTION METHOD AND COMPUTER PROGRAM |
摘要 |
A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.
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申请公布号 |
US2010205677(A1) |
申请公布日期 |
2010.08.12 |
申请号 |
US20100763371 |
申请日期 |
2010.04.20 |
申请人 |
SONY CORPORATION |
发明人 |
KAWAMOTO YOJI;NAGAO YUTAKA;ADACHI SEIICHI;NAKAMURA ATSUSHI |
分类号 |
G06F21/24;G06Q30/06;G06Q50/00;G06Q50/10;H04L9/08 |
主分类号 |
G06F21/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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