A recording medium, a method and an apparatus for managing text data and main data are provided. The method includes recording text data in a text data file separate from a file containing main data associated with the text data, recording navigation information that links the main data and the text...http://www.google.de/patents/US7715933?utm_source=gb-gplus-sharePatent US7715933 - Method of managing lyric data of audio data recorded on a rewritable recording medium