A recording medium having a data structure for managing additional content data of main data recorded thereon in accordance with the present invention comprises a data area storing at least one clip file including main data and/or additional content data of the main data; and a navigation area storing...http://www.google.com/patents/US7583887?utm_source=gb-gplus-sharePatent US7583887 - Recording medium having data structure for managing main data additional content data thereof and recording and reproducing methods and apparatuses
