发明名称 CONTENT DISTRIBUTION FOR MULTIPLE DIGITAL RIGHTS MANAGEMENT
摘要 <p>A method and apparatus for enabling use of multiple digital rights management scenarios (DRM). Unencrypted data representing digital content is examined to identify at least segments of content for encryption (608). The identified segments of content are duplicated (610) and then encrypted using a first encryption method associated with a first DRM to produce first encrypted segments. Duplicates are encrypted using a second encryption method associated with a second DRM to produce second encrypted segments (614). A set of pointers are generated that point to the first and second encrypted segments content (618). A file is then created containing first and second encrypted segments of content (622). A file is then created containing first and second encrypted segments of content, pointers and unencrypted content along with DRM rights data to produce a selectively encrypted multiple DRM enabled file.</p>
申请公布号 WO2004023717(A3) 申请公布日期 2004.12.29
申请号 WO2003US27774 申请日期 2003.09.08
申请人 SONY ELECTRONICS INC. 发明人 CANDELORE, BRANT, L.
分类号 G06F21/24;G06Q30/00;G06Q50/00;H04L9/00;H04L9/14;H04N5/783;H04N5/913;H04N7/16;H04N7/167;H04N7/24;H04N7/52;H04N9/79;(IPC1-7):H04L9/32;H04K1/00;H04L9/28 主分类号 G06F21/24
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