CONDITIONAL ACCESS METHOD AND APPARATUS FOR SIMULTANEOUSLY HANDLING MULTIPLE TELEVISION PROGRAMMES

摘要

A method of operation of an audio/video content receiver having a content decoder capable of concurrently decoding two or more audio/video programmes from a single packetized data stream of encoded audio/video data packets comprises the steps of : receiving encoded audio/video content as two or more packetized data streams, each data stream comprising one or more programmes having respective encoded audio/video data packets; generating a composite packetized data stream having programme data from two or more of the packetized data streams by selecting a subset of data packets from the two or more received packetized data streams, the subset including those audio/video data packets relating to those programmes to be decoded; storing timing data indicating at least an arrival time of those audio/video data packets included in the composite packetized data stream; and decoding and outputting audio/video programme data from the composite packetized data stream according to the timing information stored in respect of each decoded audio/video packet.