A BD-ROM playback apparatus for selecting and playing back one among text subtitle streams together with a moving picture. PSR 48-61 store Decode Capability flags whose set values indicate, for each language, whether or not a decode capability is present. Procedure executing unit 20 judges whether each...http://www.google.com.hk/patents/US8027566?utm_source=gb-gplus-share專利 US8027566 - Recording medium, reproduction device, recording method, and reproduction method
