发明名称 Techniques for using media keys
摘要 <p>Techniques for processing media data. Techniques are provided for using media keys that have been created for media data. A media key may be used to access media data for which the media key has been created. A media key has machine readable information associated with it that may be used to access the media data corresponding to the media key. Various operations may be performed using the accessed media data.</p>
申请公布号 EP1840898(B1) 申请公布日期 2014.05.07
申请号 EP20070251463 申请日期 2007.04.02
申请人 RICOH COMPANY, LTD. 发明人 BARRUS, JOHN W.;GRAHAM, JAMEY;PIERSOL, KURT W.
分类号 G11B20/00;G06F17/30;G06F21/00;G06F21/10;G06K19/16;G11B27/11;H04N1/21;H04N1/32;H04N1/44;H04N5/77 主分类号 G11B20/00
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