Abstract: The invention relates to an optical recording device utilizing an error recovery strategy method which may be implemented in software code. The error recovery method comprise steps of stopping writing data to an extent upon detection of an error and writing the rest of the extent to another location in a data file on the disc (1). After all extents have been written, a repair process repairs the faulty extent by combining the first faulty extent and the last part written to another location in a data file. The combined extent is an error free continuous extent.

Abstract: A device is equipped with local storage arrangement such as HDD and a removable optical storage carrier input device. Removable carriers include storage applications that necessitate storage space for storing data items. A storage management unit allocates storage space of the local storage arrangement to the inserted removable optical storage carrier and the application stored therein. The management unit also attributes to the portion identification information respecting access rights granted to the application with respect to data items stored in the allocated portion. The application is given no access to data items stored outside the allocated portion.

Abstract: The invention relates to a method and apparatus for fast retrieval of frames of a video stream or other data fragments like sound for fast, non-real-time trickplay navigation through the content According to the invention, a group of multiple fragments of data is identified for rendering; the pick-up unit is moved to a location on the medium where the identified group of multiple fragments of data is stored; a fragment of data is selected from the group of multiple fragments of data, the fragment of data being fastest retrievable by the pick-up unit; and the selected fragment of data is retrieved for rendering.