发明名称 |
Information management method, information playback apparatus, and information management apparatus |
摘要 |
An information management method for managing whether to allow playback of copyrighted content includes an invalidating step, executed by playback management means when an invalidating request for content recorded on a recording medium is received, of registering the content in playback-management information as being in a playback-prohibition state; a playback processing step, executed by playback controlling means when a playback request for content on the recording medium is received, of permitting playback only when the content is not in the playback-prohibition state with reference to the playback-management information; and an invalidation canceling step, executed by the playback controlling means when playback-permission information associated with content in the playback-prohibition state is obtained, of updating the playback-management information so that the playback-prohibition state of the content is canceled. |
申请公布号 |
US8270811(B2) |
申请公布日期 |
2012.09.18 |
申请号 |
US20050152235 |
申请日期 |
2005.06.15 |
申请人 |
INOKUCHI TATSUYA;ICHINOSE TSUTOMU;SONY CORPORATION |
发明人 |
INOKUCHI TATSUYA;ICHINOSE TSUTOMU |
分类号 |
H04N9/80;G06F1/00;G06F12/14;G11B15/04;G11B20/00;H04L29/06;H04N5/76;H04N5/765;H04N5/775;H04N5/781;H04N5/85;H04N5/907;H04N5/913;H04N7/167;H04N9/804 |
主分类号 |
H04N9/80 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|