Delivering specific contents to specific recipients using...

Details Delivering specific contents to specific recipients using... Delivering specific contents to specific recipients using...

2005-10-30

2011-11-22

Hoffman, Brandon (Department: 2433)

Information security

Prevention of unauthorized use of data including prevention...

Access control

Reexamination Certificate

active

08065742

ABSTRACT:
Systems and methods for delivering specific contents to specific recipients using broadcast networks. The methods include receiving an AV signal of a broadcast program and supplementary content which contains a tag identifying a specific recipient and specific contents. The specific contents are encrypted with a public key associated with the specific recipient. The supplementary content is combined with the AV signal to form a data-augmented signal which is subsequently encoded and modulated with a carrier signal to form a transmit signal for broadcasting to receivers. Each receiver includes a supplementary decoder for extracting the supplementary content, decrypting the specific contents with a private key corresponding to the public key, and providing the decrypted specific contents to the intended recipient.

REFERENCES:
patent: 2002/0044763 (2002-04-01), Wehmeyer et al.
patent: 2005/0100113 (2005-05-01), Corts et al.
patent: 9967904 (1999-12-01), None

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