Methods and apparatus for continuous control and protection of media content,申请号EP20030076224-传众专利搜索

Methods and apparatus for continuous control and protection of media content

申请公布号：EP1343318(A3)

申请号：EP20030076224

申请日期：1999.03.16

申请公布日期：2005.04.13

申请人：

INTERTRUST TECHNOLOGIES CORP.

发明人：SHAMOON, TALAL G.;HILL, RALPH D.;RADCLIFFE, CHRIS D.;HWA, JOHN P.

分类号：G06F1/00;H04L9/08;H04L9/14;H04L9/18;H04L9/28;H04L12/22;H04N7/16;H04N7/167;H04N7/24;H04N7/26;H04N7/50;H04N7/52

主分类号：G06F1/00

摘要：A novel method and apparatus for protection of streamed media content is disclosed. The apparatus includes control means for governance of content streams or objects, decryption means for decrypting content streams or objects under control of the control means, and feedback means for tracking actual use of content streams or objects. The control means may operate in accordance with rule received as part of the streamed content, or through a side-band channel. The rules may specify allowed uses of the content, including whether or not the content can be copied or transferred, and whether and under what circumstances received content may be "checked out" of one device and used in a second device. The rules may also include or specify budgets, and a requirement that audit information be collected and/or transmitted to an external server. The apparatus may include a media player designed to call plugins to assist in rendering content. A "trust plugin" and its use are disclosed so that a media player designed for use with unprotected content may render protected content without the necessity of requiring any changes to the media player. The streamed content may be in a number of different formats, including MPEG-4, MP3, and the RMFF format. <IMAGE>