CROSS-PLATFORM DIGITAL RIGHTS MANAGEMENT PROVIDING MULTI-LEVEL SECURITY INFORMATION FLOW TRACKING
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United States of America Patent
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N/A
Issued Date -
May 14, 2009
app pub date -
Sep 12, 2008
filing date -
Sep 12, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and system for generating and controlling access to copy-protected digital media files. Digital media content is obtained and encoded in electronic file using a media codec. The encoded media content is encrypted in the electronic file and a multi-format renderer configured to render the encoded, encrypted electronic file is embedded in the electronic file. When the digital file is accessed, the multi-format renderer generates an invocation code identifying an operation-type in response to a requested operation. A transaction ID storing a user-access policy and associated with the electronic file is retrieved and compared to the invocation code. Based on a result of the comparison of the invocation code and the user-access policy, the multi-format renderer selectively allows the invocation code.
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