Patent ID: 6647202
Filing Date: 2003-11-11
Classification: H04N

Abstract:
A video signal reproduction apparatus for reproducing a multiplexed encoded stream comprising audio data, video data, sub-picture data, and additional information digitally encoded and multiplexed on a packet-by-packet basis,wherein the multiplexed encoded stream comprises a plurality of packs, each of the plurality of packs comprising at least one packet, the at least one packet comprising a packet header and packet encoded data; and wherein the packet encoded data comprises at least one of packet audio encoded data, packet video encoded data, packet sub-picture encoded data, and packet navigation encoded data; wherein the packet audio encoded data forms sub-picture encoded data, the sub-picture encoded data comprising a first reproduction unit and a second reproduction unit; the first reproduction unit comprising a first unit header, first encoded bit map data, and first display control information; and the second reproduction unit comprising a second unit header, second encoded bit map data, and second display control information, wherein the video signal reproduction apparatus comprises: an input processing section for adding a next-sub-picture reproduction unit pointer to the first reproduction unit; and a sub-picture decoder for decoding the sub-picture encoded data based on the next-sub-picture reproduction unit pointer added to the first reproduction unit.