A recording medium includes an audio data group including a plurality of types of audio data; audio reproduction time information for regulating a time to reproduce each of the plurality of types of audio data; a display data group including a plurality of types of display data; and display reproduction...http://www.google.com.tw/patents/US5953290?utm_source=gb-gplus-share專利 US5953290 - Recording medium and reproduction apparatus for displaying display data synchronously with reproduction of audio data
