Method and system for midstream transcoding of secure...

Details Method and system for midstream transcoding of secure... Method and system for midstream transcoding of secure...

2006-05-30

2006-05-30

Patel, Ajit (Department: 2664)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via frequency channels

C370S474000

Reexamination Certificate

active

07054335

ABSTRACT:
A method and system for transcoding a stream of data packets are disclosed. The data packets are received from a source node and include data that are encrypted. The stream of data packets is operated on by a function that configures the stream according to downstream attributes, such as the attributes of a receiving node or of the communication channel. Significantly, the function is performed without decrypting the encrypted media data. The steam of data packets configured for the downstream attributes is sent to the receiving node. Because the encrypted data do not need to be decrypted and then encrypted again, the computational resources needed for transcoding the stream of data packets is significantly reduced, and the security of the data is not compromised.

REFERENCES:
patent: 6570850 (2003-05-01), Gutierrez et al.
patent: 6804257 (2004-10-01), Benayoun et al.
patent: WO 00/72517 (2000-11-01), None
Keller et al.; “An Actifve Router Architecture for Multicase Video Distribution” INFORCOM 2000, pp. 1137-1146.

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