DRM content stream transmission apparatus, method, and transmission and reception system
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United States of America Patent
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Nov 8, 2016
Grant Date -
Feb 12, 2015
app pub date -
Apr 28, 2014
filing date -
Aug 12, 2013
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Abstract
A content stream transmission apparatus with reverse traceability comprises a pattern insertion unit dividing the original content in units of segments and inserting at least two patterns to each segment and creating at least two pattern contents; an encryption unit encrypting the at least two pattern contents; a content selection unit selecting one of the at least two pattern contents based on user identification information; and a transmission unit transmitting the selected pattern content to a user device. Therefore, as copyright and leakage tracking information are enabled to be inserted into the contents in real-time, the present invention not only provides security-enhanced contents but also services real-time content streaming services.
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