Abstract: The present invention relates to a drive (2) for use in a computer or a reproduction device for accessing a record carrier. According to the invention via a specific action, supervised by the drive (2), the drive mimics the presence of a disc by sending a disc insertion message to the host (3). After that the drive (2) will give the host (3) (the virtual) file system contents of the virtual disc, which, for instance, contains a link to an auto-run file. This auto-run file tells the host (3) to perform certain actions, such as going to the specified internet site or executing a file from the virtual disc.

Abstract: A recording apparatus for recording digital information signals on a removable rewritable disc like recording medium has been proposed. The apparatus comprises writing means (21, 22, 25) for recording the digital information signals and control means (20) for controlling the recording. The apparatus is capable of storing first file system data and second file system data addressing user data in a user area (UA) on the medium. The control means (20) are adapted to store only one set of file entries shared by both file systems data. This reduces time and space necessary for handling file system data.

Abstract: A recording apparatus for recording digital information signals on a removable rewritable disc like recording medium has been proposed. The apparatus comprises writing means (21, 22, 25) for recording the digital information signals and control means (20) for controlling the recording. The apparatus is capable of storing first file system data and second file system data addressing user data in a user area (UA) on the medium. The control means (20) are adapted to define partitions for both file systems such that the partitions start at the same location and to store the second file system directory entries outside the first file system partition. This reduces time and space necessary for handling the second file system data by allowing two file systems to share their file entries, while protecting the second file system directory entries from being erased when the medium is under control of the first file system.

Abstract: A method of recording digital information signals on a removable rewritable disc like recording medium, the method comprising recording user data on a logical area of the disc and, prior to removal of the disc out of a recording/reproducing apparatus, finalizing the disc with a lead-in and lead-out area comprising predefined medium format data. A general purpose area within the logical area for other use than recording of user data, is being reserved. Such as use may be for example defect management. Further the method involves interrupting recording a lead-in area or a lead-out area at predefined splice points whenever a request for user data is made.

Abstract: A device for recording data and data structures on a write-once storage medium. The device has writing means for recording the data and the data structures and controlling means for generating the data structures and controlling the writing means. The data structures comprise space bit map and defect management structures. The controlling means are adapted to record the data structures at a predefined temporary location on the write-once storage medium and to finalize the write-once storage medium by recording the data structures at a predefined fixed location as defined for a rewritable storage medium.

Abstract: The present application relates to a rewritable record carrier of a predetermined format storing one or more directories of user data in a predetermined data format. In particular, its invention relates to the storage of DVD-Video data on a Mount Rainier formatted optical disc, such as a DVD+RW disc. In order to enable a consumer player to play back video data which has been written to the record carrier in said predetermined format it is proposed that the record carrier comprises a convergence directory (VIDEO TS) including a title set (VTS) for each directory of user data stored on said record carrier, each title set comprising a title set information file (vts xy.ifo) and one or more object files (vts xy.vob), said title set information file (vts xy.ifo) including content and address information of said one or more object files (vts xy.vob) which comprise address information of said user data, and management information (VMG) comprising a management information file (video ts.

Abstract: A recording apparatus for recording data on a rewritable optical recording medium includes a read/write head for reading and recording data, an error corrector for finding and correcting errors in the recorded data read, and a controller for controlling the recording and reading of the data. The recording apparatus is capable of performing fast and efficient examination of formatted recording medium in order to adapt a data recording strategy, so as to increase the efficiency of writing operations.

Abstract: A method of recording digital information signals on a removable rewritable disc like recording medium, the method including recording user data on a logical area of the disc and, prior to removal of the disc out of a recording/reproducing apparatus, finalizing the disc with a lead-in and lead-out area comprising predefined medium format data. A general purpose area within the logical area for other use than recording of user data, is being reserved. Such a use may be, for example, defect management. Further, the method involves interrupting recording a lead-in area or a lead-out area at predefined splice points whenever a request for user data is made.

Abstract: A device records information in blocks having logical addresses at a physical address in a track on a record carrier. The logical addresses are translated into the physical addresses in dependence of defect management information (52,53,61,64), which includes defect entries indicating locations for replacing defective physical addresses. A read-only state of the record carrier is obtainable via a no-replacement state indicated by substantially none of the defect entries being free for use. The device has a read-only unit for setting the record carrier to the read-only state by reading original replacement information indicating a writable state, storing the original replacement information (60) in a hidden area, and writing defect management information (61) that is modified to the no-replacement state. The record carrier may be re-opened by retrieving the original replacement information (60) from the hidden area.

Abstract: A device for recording records information in blocks having logical addresses at a physical address in a track on a record carrier. The logical addresses are translated into the physical addresses in dependence of defect management information, such as primary and secondary defect lists and remapping tables, maintained in defect management areas (61). The defect management information includes assignment information indicative of assignment of physical addresses in parts of the track to user data areas or to defect management areas. The device has assignment means for dynamically adapting the assignment information in dependence of detected defects (54) by assigning an additional physical address range to an additional defect management area (61). The additional physical address range starts near the detected defect (54). Hence the defect (54) is covered by a defect management area, which reduces the need for remapping.

Abstract: A recording apparatus for recording digital information signals on a removable rewritable disc like recording medium has been proposed. The apparatus comprises writing means (21, 22, 25) for recording the digital information signals and controls means (20) for controlling the recording. The apparatus is capable of performing initialization, formatting and defect management of a rewritable medium. Further, the apparatus is capable of storing first file system data in a user area (UA) and second file system data in a general application area (GAA) on the medium. The control means (20) are adapted to modify defect management data on the medium in order to block write access to UA under control of the first file system. This prevents systems unaware of the second file system data on the medium from modifying contents of UA.

Abstract: A device for recording information records blocks having continuous logical addresses on a record carrier at corresponding physical addresses. The logical addresses are translated into the physical addresses in dependence of defect management information, which includes assignment information indicative of assignment of physical addresses in first parts of the track to at least one user data area, assignment of physical addresses in second parts of the track to defect management areas and assignment of the defect management information to the defect management areas. A data type of recorded information is detected, in particular the type being streaming for real-time data like digitally encoded video, or nonstreaming for random data like computer data files. The device has defect management area reassignment means for changing said assignment information in dependence of the data type. For example a contiguous defect management layout 54 is converted into a distributed layout 55.

Abstract: A device for recording information records blocks having continuous logical addresses on a record carrier at corresponding physical addresses. The logical addresses are translated into the physical addresses in dependence of defect management information, which includes remapping information indicative for translating a logical address initially mapped to a physical address exhibiting a defect to an alternate physical address in a defect managemen area. The device has a continuous data detection unit (33) for detecting a logically continuous data, and a defect management reorganizing unit (34). The physical addresses of remapped logical addresses in the logically continuous data are determined, and the defect management information is reorganized (61,63,64,65,66) by remapping at least one of the remapped logical addresses to a different defect management area. During read-out the remapped logical addresses in the logically continuous address range are retrieved from a single defect management area.

Abstract: A recording apparatus for recording digital information signals on a removable rewritable disc like recording medium has been proposed. The apparatus comprises writing means (21, 22, 25) for recording the digital information signals and control means (20) for controlling the recording. The apparatus is capable of performing initialization, formatting and defect management of a rewritable medium. Further, the apparatus is capable of storing first file system data in a user area (UA) and second file system data in a general application area (GAA) on the medium. The control means (20) are adapted to enlarge GAA and to store the second file system data in it. This increases a number of files in UA, which can be addressed by the second file system data.

Abstract: A recording apparatus for recording digital audio/video signals on a removable rewritable disc like recording medium has been proposed. The apparatus comprises writing means (21, 22, 25) for recording the digital information signals and control means (20) for controlling the recording. The apparatus is capable of performing initialization, formatting and defect management of a rewritable medium. Further, the apparatus is capable of storing data in replacement areas instead of defect areas, which have been determined to be defective according to rules of the defect management. The control means (20) are adapted to re-record data from the replacement areas in the defect areas in order to improve playability of digital audio/video signals stored on the medium.

Abstract: A device for recording records information in blocks having logical addresses in a storage space on a record carrier. The device has an interfacing unit (31) for communicating with a host system by exchanging commands and information, a record carrier status unit (32) for detecting a record carrier update status in which information stored on the record carrier is to be changed, and an update unit (33) for initiating an unmount-mount sequence. The unmount-mount sequence is initiated by the device and starts with an unmount process (42) for, via the interfacing means, forcing the host system to relieve control of the record carrier. Then the device has taken control and performs an update process (44) for said changing of information on the record carrier. Finally the control is returned to the host by a mount process (45) that forces the host system to accept the changed information.

Abstract: The invention relates to a method and a device for random write and overwrite to a write once recordable medium, a method and a device for defect management on a write once recordable medium, a method and a device for undo changes made to a write once recordable medium, and a method and a device for reuse of a used write once recordable medium.

Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g., an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which includes pre-formed track position information indicative of locations for recording the information units. From the information signal, a modulated signal is generated having successive frames, each frame including a synchronizing signal. The modulated signal is recorded at a one of the locations, while maintaining a fixed relationship between the track position information and the synchronizing signals. In the event that the location is after and adjacent to an already recorded location, the recording is started at a link position (31) before the end of a last frame of the earlier recorded information signal, at a predefined distance before a first synchronizing signal (30) of the modulated signal.

Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g., an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which includes preformed track position information indicative of locations for recording the information units. From the information signal, a modulated signal is generated having successive frames, each frame including a synchronizing signal. The modulated signal is recorded at a one of the locations, while maintaining a fixed relationship between the track position information and the synchronizing signals. In the event that the location is after and adjacent to an already recorded location, the recording is started at a link position (31) before the end of a last frame of the earlier recorded information signal, at a predefined distance before a first synchronizing signal (30) of the modulated signal.

Abstract: A recording apparatus for recording data on a rewritable optical recording medium has been proposed. The apparatus comprises input means (27) for rewriting the data, recording means (21, 22, 25, 28, 29) for recording the data reading means (21, 22, 25, 30) for reading the recorded data, error correction means (30) for finding and correcting errors in the recorded data read and control means (20) for controlling the recording and reading of the data. The recording apparatus is capable of performing fast and efficient examination of formatted recording medium in order to adapt a data recording strategy, so as to increase the efficiency of writing operations.