Invention Application
WO2005053156A2 CABLECARD WITH CONTENT MANIPULATION 审中-公开
包含内容操作的CABLECARD

CABLECARD WITH CONTENT MANIPULATION
Abstract:
A CableCARD device for manipulation of a stream of data has an inband data input for receiving a stream of data from a host, the stream of data having a plurality of packets each having a packet identifier (PID) associated therewith, wherein the stream of data further has encrypted packets. A PID remapper selects certain of the packets for remapping of the packet identifiers associated with the selected packets, and remaps the packet identifiers of the selected packets so that the packets are associated with a new packet identifier. A decrypter decrypts the encrypted packets. An encrypter re-encrypts the decrypted packets. An inband data output sends the data stream with remapped packet identifiers back to the host. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
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