Signal format that facilitates easy scalability of encrypted streams
AssigneeHewlett-Packard Development Company, L.P.
InventorsSusie J. Wee, John G. Apostolopoulos
Life of this patent
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Abstract
A computer readable medium having a data packet stored therein for causing a functional change in the operation of a device is disclosed. In one embodiment, the data packet is comprised of a scalably encoded, progressively encrypted data portion. In the present embodiment, the data packet further includes a header data portion corresponding to the scalably encoded, progressively encrypted data portion. The header data portion includes information adapted to be used by a transcoder to transcode the scalably encoded, progressively encrypted, data portion.
Claims16
A computer readable medium having a data packet stored therein for causing a functional change in the operation of a device, said data packet comprising:
- a) a scalably encoded, progressively encrypted data portion;
- and
- b) a header data portion corresponding to said scalably encoded, progressively encrypted data portion, said header data portion including information adapted to be used by a transcoder to efficiently transcode said scalably encoded, progressively encrypted data portion.
A computer readable medium having a data packet stored therein for causing a functional change in the operation of a device, said data packet comprising:
- a) a scalably encoded, progressively encrypted data portion, said scalably encoded, progressively encrypted data having a truncation point identified therein, said identified truncation point enabling a transcoder to perform efficient transcoding of said data packet;
- and
- b) a header data portion corresponding to said scalably encoded, progressively encrypted data portion, said header data portion including information adapted to be used by a transcoder to efficiently transcode said scalably encoded, progressively encrypted data portion, said information included in said header data portion of said data packet stored therein enabling said transcoder to transcode said scalably encoded, progressively encrypted data portion without decrypting, decoding, re-encrypting, and re-coding said scalably encoded, progressively encrypted data portion.
A computer readable medium having a data packet stored therein for causing a functional change in the operation of a device, said data packet comprising:
- a scalably encoded, progressively encrypted data portion, said scalably encoded, progressively encrypted data having a truncation point identified therein, said identified truncation point enabling a transcoder to perform efficient transcoding of said data packet;
- and
- said scalably encoded, progressively encrypted data portion assembled by an encoding system such that said transcoder can transcode said scalably encoded, progressively encrypted data portion without decrypting, decoding, re-encrypting, and re-coding said scalably encoded, progressively encrypted data portion.
Dependencies are inferred from the claim text.