Management data such as title files of the contents like stored video programs, contracted video files (thumbnail index files) showing the contents, position data of the data of contents, etc. are stored at one time in a particular region of a disc storage medium. Position data of I-Pictures are stored...http://www.google.de/patents/US6904227?utm_source=gb-gplus-sharePatent US6904227 - Device and method for editing video and/or audio data recorded in a disc storage medium
