Context dependent multi-angle navigation technique for digital versatile discs

Abstract From the Canadian patent

Selection of an audio-visual stream from among a plurality of streams occurs by first detecting a navigation packet within at least one stream that provides information concerning the stream as well as those streams in lie in , synchronism therewith. From the navigation packet a determination is made , which other streams lie in synchronism with the one stream which audio and , sub-picture data packets exist in each stream and as well as which highlight , information properties exist for selecting among the synchronized streams. At least one of the audio data packets, sub-picture data packets or highlight , information properties undergoes modification in accordance with information …