Transport of partially encrypted media
AssigneesCable Television Laboratories, Inc., Motorola Mobility LLC
InventorsMukta L. Kar, Mandayam A. Narasimhan
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Abstract
A method of facilitating transport of partially encrypted video is disclosed. The method re-packetizes or otherwise de-concatenates packets carrying the partially encrypted video into packets where all the video in each packet is either encrypted or unencrypted. The re-packetized video packets may include data that identifies whether the packet is carrying encrypted or unencrypted video.
Claims26
1-27. (canceled)
A computer-readable medium not including a signal and having stored thereon computer-executable instructions which when executed by a computer perform a method for re-packetizing partially encrypted video packets, the method comprising:
- identifying at least one encrypted video slice and at least one unencrypted video slice within each partially encrypted video packet, each of the partially encrypted video packets including both encrypted video slices and unencrypted video slices;
- de-concatenating each of the at least one encrypted video slice and the at least one unencrypted video slice into separate packets;
- and
- generating at least one fully unencrypted video packet for each of the unencrypted video slices and at least one fully encrypted video packet for each of the encrypted video slices.
A method of re-packetizing partially encrypted media packets, the method comprising:
- identifying media slices included within the plurality of partially encrypted packets as encrypted media slices and unencrypted media slices, each of the plurality of partially encrypted packets including both encrypted media slices and unencrypted media slices;
- and
- re-packetizing the plurality of partially encrypted packets into a number of re-packetized packets without decrypting the encrypted media slices, each re-packetized packet having one but not both of encrypted media slices and unencrypted media slices.
A computer-readable medium not including a signal and having stored thereon computer-executable instructions which when executed by a computer perform a method for re-packetizing partially encrypted media packets, the method comprising:
- identifying encrypted media and unencrypted media slices included within each partially encrypted media packet, each of the partially encrypted media packets including both encrypted media slices and unencrypted media slices;
- and
- de-concatenating each identified encrypted and unencrypted media slice into separate packets comprised of one of encrypted and unencrypted media slices.
Dependencies are inferred from the claim text.