CONTENT ENCRYPTION
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Accused Products
Abstract
An audio/video content delivery system includes a content source linked by an internet data connection to a content receiver, the content receiver configured to receive access-controlled encoded broadcast content from a content source by a separate broadcast data path. The content source includes an encryptor sending encrypted content to the content receiver according to a content encryption key. The content receiver includes: a host module including a decryptor decrypting encrypted content received from the content source; and a removable conditional access module (CAM) including an access control unit decoding the access-controlled encoded broadcast content, the host module and removable CAM configured to provide an encrypted communication link therebetween for decoded access-controlled encoded broadcast content. The content source and the CAM are configured to communicate to establish the key required by the decryptor in the host module to decrypt the encrypted content received from the content source.
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Citations
30 Claims
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1-16. -16. (canceled)
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17. An audio/video content delivery system comprising:
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a content source linked by an internet data connection to a content receiver, the content receiver being configured to receive content from the content source via the internet data connection and to receive access-controlled encoded broadcast content from that or another content source by a separate broadcast data path; the content source comprises an encryptor for sending encrypted content to the content receiver via the internet data connection according to a content encryption key; the content receiver comprises; a host module having a decryptor for decrypting encrypted content received from the content source via the internet data connection; and a removable conditional access module (CAM), the CAM including an access control unit for decoding the access-controlled encoded broadcast content, the host module and the removable CAM configured to provide an encrypted communication link for decoded access-controlled encoded broadcast content between the conditional access module and the host module; the content source and the CAM configured to communicate via the internet data connection to establish the key required by the decryptor in the host module to decrypt the encrypted content received from the content source. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An audio/video content receiver configured to:
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receive encrypted content from a content source via an internet data connection and to receive access-controlled encoded broadcast content from that or another content source by a separate broadcast data path, the content receiver comprising; a host module including a decryptor for decrypting encrypted content received from the content source via the internet data connection; and an interface for cooperation with a removable conditional access module (CAM), the CAM including an access control unit for decoding the access-controlled encoded broadcast content, the host module and the removable CAM configured to provide an encrypted communication link for decoded access-controlled encoded broadcast content between the conditional access module and the host module through the interface; and the CAM is configured to communicate with the content source via the internet data connection to establish the key required by the decryptor in the host module to decrypt the encrypted content received from the content source.
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30. An audio/video content delivery method in which a content source is linked by an internet data connection to a content receiver, the content receiver configured to receive content from the content source via the internet data connection and to receive access-controlled encoded broadcast content from that or another content source by a separate broadcast data path, and the content receiver including a host module including a decryptor for decrypting encrypted content received from the content source via the internet data connection and a removable conditional access module (CAM), the CAM including an access control unit for decoding the access-controlled encoded broadcast content, the host module and the removable CAM configured to provide an encrypted communication link for decoded access-controlled encoded broadcast content between the conditional access module and the host module;
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the method comprising; the content source and the CAM communicating via the internet data connection so as to establish the decryption key required by the decryptor in the host module to decrypt the encrypted content received from the content source; and the content source encrypting and sending encrypted content to the content receiver via the internet data connection according to a content encryption key appropriate to the decryption key established at the decryptor in the host module.
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Specification