发明名称 |
INFORMATION PROCESSING METHOD/APPARATUS AND PROGRAM |
摘要 |
A client receives an encrypted content from a content server. The header of the content includes license-identifying information for identifying a license required in utilization of the content. The client requests a license server to transmit a license identified by the license-identifying information. When receiving the request for a license, the license server carries out a charging process before transmitting the license to the client. The client stores the license received from the license server. The stored license serves as a condition for encrypting and playing back the content. As a result, a content can be distributed with a high degree of freedom and only an authorized user is capable of utilizing the content.
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申请公布号 |
CA2371124(A1) |
申请公布日期 |
2002.08.09 |
申请号 |
CA20022371124 |
申请日期 |
2002.02.07 |
申请人 |
SONY CORPORATION |
发明人 |
KURODA, YOSHISUKE;ISHIGURO, RYUJI;KAWAKAMI, ITARU;TANAKA, KOICHI |
分类号 |
G06F17/00;G06F1/00;G06F21/00;(IPC1-7):G06F12/14 |
主分类号 |
G06F17/00 |
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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