Method of transmitting and reproducing content processed by various DRM systems
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United States of America Patent
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Apr 3, 2012
Grant Date -
Feb 2, 2006
app pub date -
Jul 28, 2005
filing date -
Jul 29, 2004
priority date (Note) -
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Abstract
Provided is a method of transmitting content processed according to first digital rights management (DRM) to a device that uses second DRM. The method includes generating a ticket using a first license server and a second license server, the first license server issuing a first license for use in the first DRM and the second license server issuing a second license for use in the second DRM; the second device obtaining a second content key required to process the content using the ticket and the second DRM; and the second device receiving the content from the first device and processing the content using the second content key and the second DRM. The ticket includes use control information that specifies a restriction of use of the content, and the second content key required to process the content using the second DRM.
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