Index data is automatically formed with respect to music data recorded on a recording medium. In the index data, statuses showing states of the music data such as reproducible data, data which was moved to another recording medium and whose reproduction is inhibited, and deleted data are provided for...http://www.google.com/patents/US6594740?utm_source=gb-gplus-sharePatent US6594740 - Recording/reproducing device and recording/reproducing method
