Abstract: A method of recording an encoded bit stream that represents video objects includes recording a collection of contiguously arranged video objects and management information about recorded video objects. The collection is partitioned into adjacent recordings that represent playable titles, where a playable title is defined as a playback sequence of all complete cells or a subset of complete cells of a recording in the order of allocation within the video object storage area on the disc. The method further includes generating a title list of titles sorted in the order of arrangement within the video object area on the disc. The method further includes defining a free space title that represents free space within the video object area and includes the free space title in the title list.

Abstract: To prevent dissemination of content stored on a DVD-RW disc, CPRM is provided. However, this does not provide a watertight system. The invention proposes to arrange a stream to be recorded such that the input for verification data and therefore verification data is different for different authorisation levels. Various embodiments for implementing the invention are disclosed and comprise re-arranging data packs to be recorded and/or modifying data in data packets.

Abstract: A method of recording an encoded bit stream, said encoded bit stream representing a plurality of video objects comprising a sequence of cells together constituting a pan of an MPEG2 Program Stream, on a disc like record carrier, such as an optical disc. The method comprises recording a collection of contiguously arranged video objects and management information about recorded video objects. The collection is partitioned into adjacent recordings that represent playable titles, wherein a playable title is defined as a playback sequence of all complete cells or a subset of complete cells of a recording in the order of allocation within the video object storage area on the disc. The method further comprises generating a title list of titles sorted in the order of arrangement within the video object area on the disc. The method defines a free space title that represents free space within the video object area and includes the free space title in the title list.

Abstract: A method is described for recording information on a multi-layered optical disc (2), the disc comprising two storage spaces (LO, L1) in adjacent storage layers (40, 41). Data to be recorded are received from a source. On recording, the data are organized to form cells (35), each cell corresponding to a certain amount of data. The cells are first recorded in the first storage space (LO) until the last storage address (N) of the first storage space, and then the recording process makes a transition to the first storage address (N+1) of the second storage space. The size of the last cell to be recorded in the first storage space is determined in relationship to the size of the remainder part (R) of the first storage space, such that the transition from the first storage space to the second storage space corresponds to a cell boundary (34).

Abstract: Current legislation requires the possibility of encryption when storing television programmes received by broadcast. However, legacy playback apparatuses will not be able to play back such encrypted data in a regular way, but possibly in a wrong way. This may result in problems like damage of speakers. Therefore, the application intends to hide any of such possibly damaging streams by intentionally providing such streams with a wrong identification during the encryption process. The application provides among others a method and circuit for encryption and a method and circuit for decryption. The application is especially suitable for DVD recorders, but may also be employed for other video and/or audio recorders. The invention may even be used for encrypting non-audiovisual data.

Abstract: A method for copying information from a multi-layered optical source disc (2S) to on a multi-layered optical target disc (2T) is described. A first portion (67) of the source data is located in a first source storage space (LsO), and a second portion (68) of the source data is located in a second source storage space (LsI). The first source data portion has a logical end address (M) smaller than the physical end address (Nt) of the first target storage space (LtO). All source cells from the first source storage space are recorded into a first target data portion (77) of the first target storage space. The remainder portion (74) of the first target storage space is defined as a dummy data portion. Then, the cells from the second source data portion (68) are recorded into a second target data portion (78) of the second target storage space (LtI).

Abstract: The present invention relates to a method of recording data on a dual-layer optical write-once disc (10), comprising the steps of: creating a first-layer video-data fragment (28) on a first layer (20) of the optical disc, the first-layer video-data fragment extending from a minimum first-layer video-data radius within a data zone of the disc to an outer radius within the data zone of the disc, the outer radius defining a layer boundary (38), creating a second-layer video-data fragment (40) on a second layer (22) of the optical disc, the second-layer video-data fragment extending from minimum second-layer video-data radius within the data zone of the disc to the layer boundary, writing video data (32) to the first-layer video-data fragment, starting from an inner radius of the disc up to a maximum first-layer video-data radius smaller than or equal to the layer boundary, writing video data to the second-layer video-data fragment, starting from the layer boundary, and if the maximum first-layer video-data ra

Abstract: A device for rendering real time information arranged in cells constituted by units encoded at a variable bit rate, e.g. video on a DVD, is described. The device has various trick play modes for rendering the information at a different speeds based on speed pointers. A limited amount of speed pointers is included in the information stream. The device has a calculation unit 32 for calculating further speed pointers based on estimating the playback time of the units by retrieving cell playback information (C-PBIT) that includes the addresses of the first unit and the last unit within the cell and a cell playback time, retrieving a unit address map (VTS-VOBU-ADMAP) that includes the addresses of the units, determining a number of units within the cell by determining a position of said first and last unit in the unit address map, and dividing the cell playback time by the number of units.

Abstract: A method of recording an encoded bit stream, said encoded bit stream representing a plurality of video objects comprising a sequence of cells together constituting a part of an MPEG2 Program Stream, on a disc like record carrier, such as an optical disc. The method comprises recording multiple series of contiguously arranged video objects constituting multiple video object sets on said disc with corresponding multiple management information comprising attribute information of the corresponding video object set. The management information constituting with a video object set a playable video title. The multiple video object sets are combined into a single combined video object set and the multiple management information is preceding said combined video object set.

Abstract: Method of contiguously recording a sequence of ordered A/V information signals, such as video/audio information, and corresponding management information signals, such as video management, menu information or file information, on a disc-like recording medium of the write-once type, such as an optically recordable and readable disc. The recorded information complies to the requirements of ordering of such information as defined by a disc of the read-only type or of the rewritable type. The method comprises allocating a reserved area within a linear addressing space of the disc, contiguously recording the A/V information signals in a video recording area located succeeding the reserved area, recording corresponding management data in a temporary overview space succeeding the video recording area, generating a mapping table for mapping the recorded management data to address locations in the reserved area and recording the mapping table in the temporary overview space.

Abstract: A recording system records blocks of information on a record carrier according to a file management system. Data space on a partly and fragmented recorded record carrier (60-68) is managed as follows. The information includes a first type of information, such as video, and a second type, such a general purpose data. The first type has extent allocation requirements that include requiring an extent to accommodate a multitude of information blocks in a consecutive range of addresses and the extent to have at least a predetermined extent size. Data space is managed by selecting at least one partly recorded data area (67,63,68) of at least the extent size which data area contains information blocks (63) at recorded addresses, and subsequently creating a free data area (74) on the record carrier by moving the information blocks from the recorded addresses in the partly recorded data area to different addresses (73) outside the free data area (74) and correspondingly adapting the file management data.

Abstract: The application relates to a method of and devices for encoding an information stream (20) into a variable bit rate (VBR) encoded information stream (24). The application discloses a method of estimating the relation between the variable bit rate, the recording time and the storage capacity of a record carrier. The deviation of the estimated recording time from the true recording time is kept within predefined limits and it is prevented that deviations from several successive recordings accumulate.

Abstract: Method of contiguously recording a sequence of ordered A/V information signals, such as video/audio information, and corresponding management information signals, such as video management, menu information or file information, on a disc-like recording medium of the write-once type, such as an optically recordable and readable disc. The recorded information complies to the requirements of ordering of such information as defined by a disc of the read-only type or of the rewritable type. The method comprises allocating a reserved area within a linear addressing space of the disc, contiguously recording the A/V information signals in a video recording area located succeeding the reserved area, recording corresponding management data in a temporary overview space succeeding the video recording area, generating a mapping table for mapping the recorded management data to address locations in the reserved area and recording the mapping table in the temporary overview space.

Abstract: The invention relates to a method for a playback sequence on an optical disc (100) for controlling access to information (107). The optical disc comprises a navigation structure (104) and content (103). The navigation structure (104) comprises conditional commands, which comprise preconditions. Depending on the precondition, a player always acts (109) to the conditional command in a way predefined in an applicable optical disc standard. The method is able to recognize special preconditions inside conditional commands, so called preset preconditions (111). A player comprising the method can be instructed to act in a different (113) than the predefined way to the conditional command comprising preset preconditions. Implementing conditional commands comprising preset preconditions on an optical disc, results in a behavior of a player comprising the method being different from a player not comprising the method. This can be used to control access to information (107) on the disc (100).

Abstract: There is described a method of partitioning data on a data carrier arranged to be a write-once item. The method comprises a first step of writing video data content to a first region of the carrier, a second step of writing other data content to a second region of the carrier, and a third step writing substantially mutually independent first and second directories for recording data layouts of their corresponding first and second regions respectively, for example during finalisation. Such partitioning of the video data content and other data content, for example still picture data, is of benefit in rendering the data carrier, for example implemented as a DVD R data carrier, more compatible with other data carrier formats, for example DVD RW.

Abstract: A method of recording information stores information on a multilayer record carrier of an opposte track path type (OTP). Logically the OTP disc has a single recording area, but physically a first part (54) is located on layer 0 (L0) and a second part (57) on layer 1 (L1). For recording a first amount ofdata dollowed by a second, larger, amount of data, the size of the first part is adapted to be at least equal to a data size of the second part by recording at least most of the first amount of data in the first part, including a filling area (49) in the first part, and recording at least most of the second amount of data in the second part. This has the advantage that a different amount of data can be accommodated on both layers, while a layer jump is easy.

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: Information carrier, device for reading and device for providing the information carrier and method of transmitting picture information. The disclosed system comprises an information carrier (1) on which an information signal is recorded that represents picture information intended for being displayed on a picture screen, which picture information comprises video information of a video programme as well as control information for selectively displaying the video programme. The video programme is subdivided into sections (35) and, when the video programme is displayed selectively, sections are shown in a new order (34) and partly omitted or replaced. To this end the control information includes path information (36) which indicates a path of sections to be displayed in linked fashion. The path information may be recorded multiplexed with MPEG-2 video information and then contains addresses (53, 54, 55, 56, 57, 58, 59) for forward and backward jumps.

Abstract: A method of recording an encoded bit stream, the encoded bit stream representing a plurality of video objects comprising a sequence of cells together constituting a part of an MPEG2 Program Stream, on a disc like record carrier, such as an optical disc. The method comprising recording video objects comprising a sequence of contiguously recorded cells, each cell comprising a unique cell identification number within a video object, recording a playback sequence of cells defining a playable program chain of cells, wherein the sequence comprises references to the cell identification numbers and recording navigation data within the cells comprising an end time of presentation of the corresponding video object. The method further comprises recording at the end of a video object a dummy cell that is not being referenced by a playback sequence.

Abstract: A reproducing apparatus (1) reproduces content stored in encrypted form on a record carrier (2). The record carrier (2) further stores a carrier region code (RCC) indicating in which region content shall be allowed to be reproduced and an encrypted region key (RK) for decrypting content, in order to make it more difficult to hack a reproducing apparatus (1) for it to play record carriers having a wrong region code. The reproducing apparatus (1) has a region code storage (10) for storing a device region code (RCD), and a device key storage (11) for storing a device key (DK), which device key (DK) is different for all regions.