Client-side protection of broadcast or multicast content for non-real-time playback
a technology for broadcast or multicast content and non-real-time playback, which is applied in the direction of selective content distribution, electrical equipment, television systems, etc., and can solve the problem of significant increase in the cost of the client devi
Inactive Publication Date: 2011-07-14
QURIO HLDG
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Benefits of technology
[0005]The present invention relates to client-side protection of broadcast or multicast multimedia content for non-real-time playback. A set-top box function receives a request to record multimedia content and determines whether recording of the multimedia content is restricted. Upon receiving the multimedia content, the set-top box decrypts the multimedia content, if necessary, for real-time playback. If recording of the multimedia content is restricted, the set-top box re-encrypts the multimedia content and generates a packaged file including the re-encrypted multimedia content and one or more of a content identifier, a set-top identifier, a network reference to a copyright policy server, and a
Problems solved by technology
However, this common watermark provides no deterrent to the user against anonymous redistributions.
However, client-side watermarking requires substantial resources and, therefore, significantly increases the cost of the client device.
Method used
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[0012]The embodiments set forth below represent the necessary information to enable those skilled in the art to practice the invention and illustrate the best mode of practicing the invention. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the invention and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of the disclosure and the accompanying claims.
[0013]FIG. 1 illustrates a system 10 including a set-top box function 12 implementing the present invention. In general, the system 10 includes the set-top box function 12, a content server 14, a playback device 16, a license server 18, remote storage 20, a remote system 22, and a copyright policy server 24. Note that one or more of the content server 14, the license server 18, and the copyright policy server 24 may alternatively ...
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A system and method are disclosed for providing client-side protection of broadcast or multicast multimedia content for non-real-time playback. A set-top box function receives a request to record multimedia content and determines whether recording of the multimedia content is restricted. Upon receiving the multimedia content, the set-top box decrypts the multimedia content for real-time playback. If recording of the multimedia content is restricted, the set-top box re-encrypts the multimedia content and generates a packaged file including the re-encrypted multimedia content and one or more of a content identifier, a set-top identifier, a network reference to a copyright policy server, and a record policy of the multimedia content. The packaged file is either stored locally or transferred to remote storage. A remote system having access to the packaged file obtains the packaged file and enforces a copyright policy of the multimedia content before releasing the multimedia content for non-real-time playback.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application is a continuation of U.S. patent application Ser. No. 11 / 611,188 filed on Dec. 15, 2006, the disclosure of which is hereby incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to a set-top box function that receives broadcast or multicast multimedia content and enables client-side protection of the multimedia content for non-real-time playback.BACKGROUND OF THE INVENTION[0003]In a broadcast / multicast (one-to-many) video transport system, digital watermarking can most easily be accomplished at the source of the video broadcast. This approach delivers a common watermark to each termination or client receiving the broadcast or multicast video content. However, this common watermark provides no deterrent to the user against anonymous redistributions. This redistribution can occur through public Peer-to-Peer (P2P) networks, darknets, or postings to video sharing sites.[0004]...
Claims
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Login to View More IPC IPC(8): H04N7/167
CPCH04N21/2541H04N21/26613H04N21/4627H04N21/4334H04N21/4408H04N21/4325
Inventor EVANS, GREGORY MORGANROBERTS, THOMAS A.
Owner QURIO HLDG