METHODS AND SYSTEMS FOR HANDLING DIGITAL RIGHTS MANAGEMENT
First Claim
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1. A method for communicating between media devices, comprising:
- requesting media by initiating Session Initiation Protocol (SIP) signaling between said devices, wherein said SIP signaling includes a Session Description Protocol (SDP) which contains a parameter describing a type of Digital Rights Management (DRM) used by a requesting media device.
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Abstract
Systems and methods according to the present invention address this need and others by providing methods and systems for translating media encrypted by various Digital Rights Management (DRM) techniques. This allows end user equipment to receive media in an IMS/IPTV environment when the end user equipment uses a DRM that is different from the media server which is providing the desired media in both unicast and multicast applications.
31 Citations
20 Claims
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1. A method for communicating between media devices, comprising:
requesting media by initiating Session Initiation Protocol (SIP) signaling between said devices, wherein said SIP signaling includes a Session Description Protocol (SDP) which contains a parameter describing a type of Digital Rights Management (DRM) used by a requesting media device. - View Dependent Claims (2, 3, 4, 5)
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6. A method for translating media based upon Digital Rights Management (DRM) type comprising:
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receiving a Session Initiation Protocol (SIP) message requesting said media including a DRM type parameter; and replacing a return IP address in said SIP message with an IP address associated with a decryption unit selected from a plurality of IP addresses. - View Dependent Claims (7)
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8. A communications node comprising:
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a memory for storing information associated with a plurality of encryption and decryption units; and a processor for controlling said plurality of encryption and decryption units, wherein Session Initiation Protocol (SIP) signaling information is received by said node which contains Session Description Protocol (SDP) information that contains a parameter describing a Digital Rights Management (DRM) type associated with a device which is requesting media, further wherein said parameter is used by said processor to control at least one of said plurality of encryption and decryption units. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method for transmitting a broadcast from a node comprising:
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receiving a media stream, at said node, which has been encrypted by a first type of Digital Rights Management (DRM); decrypting said media stream; re-encrypting said media stream into a plurality of different DRM types; and transmitting a plurality of media streams wherein each of said media streams is encrypted with a different type of DRM. - View Dependent Claims (17, 18, 19)
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20. A communications node comprising:
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a memory for storing information associated with a plurality of encryption and decryption units; and a processor for controlling routing of media communications to said plurality of encryption and decryption units, wherein one of said plurality of decryption units receives a media communication encrypted with a first Digital Rights Management (DRM) type, decrypts said media communication and transmits said decrypted media communication to said plurality of encryption units; and said plurality of encryption units, wherein each of said plurality of encryption units that receives said decrypted media communication re-encrypts said decrypted media communication with a different DRM type and transmits said re-encrypted media communication.
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Specification