Abstract: An information recording method for recording information on a recording medium, including providing a recording medium having first and second areas, the first area for recording ands reproducing video information, the second area for recording manager information, the manager information being referred to when the video information in the first area is reproduced, the video information including an object file for storing movie and/or still video objects, the manager information including video manager information containing information related to the movie and/or still video objects stored in the object file, the object file including manufacturer's information, the manufacturer's information including manufacturer ID and manufacturer's data, recording the movie and/or still video objects in the object file, recording the video manager information in a third area in the second area, and recording the manufacturer ID and manufacturer's data of a specific manufacturer in a fourth area in the object file.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: An information recording method for recording information on a recording medium, including providing a recording medium having first and second areas, the first area for recording ands reproducing video information, the second area for recording manager information, the manager information being referred to when the video information in the first area is reproduced, the video information including an object file for storing movie and/or still video objects, the manager information including video manager information containing information related to the movie and/or still video objects stored in the object file, the object file including manufacturer's information, the manufacturer's information including manufacturer ID and manufacturer's data, recording the movie and/or still video objects in the object file, recording the video manager information in a third area in the second area, and recording the manufacturer ID and manufacturer's data of a specific manufacturer in a fourth area in the object file.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: An information recording method for recording information on a recording medium, including providing a recording medium having first and second areas, the first area for recording ands reproducing video information, the second area for recording manager information, the manager information being referred to when the video information in the first area is reproduced, the video information including an object file for storing movie and/or still video objects, the manager information including video manager information containing information related to the movie and/or still video objects stored in the object file, the object file including manufacturer's information, the manufacturer's information including manufacturer ID and manufacturer's data, recording the movie and/or still video objects in the object file, recording the video manager information in a third area in the second area, and recording the manufacturer ID and manufacturer's data of a specific manufacturer in a fourth area in the object file.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: On an information recording medium, there are recorded: one or a plurality of first entity information (VTS), which is compressed and encoded by a first compressing and encoding method, for individually constituting Titles; first management information (VMG) for managing and controlling the first entity information; one or a plurality of second entity information (VTS2), which is compressed and encoded by a second compressing and encoding method, for individually constituting Titles; and second management information (VMG2) for managing and controlling the first and second entity information.

Abstract: A sub-picture category (SP_CAT) is added to a sub-picture unit header (SPUH) configuring a sub-picture unit, and a flag “Raw” indicating pixel data run length compression/non-compression is provided in the header. Original data with a 4-bit/1-pixel configuration is subjected to run length compression, and if the data after compression exceeds the size of the original data, flag “Raw”=1 (non-compression) is specified. If the data is slightly compressed, flag “Raw”=0 (compression) is specified, thereby enabling efficient recording of sub-picture information in a recording medium.

Abstract: In a button mode (BTN_MD), there is provided a flag (HDGR) indicating whether or not an HD button group is recorded, thereby switching the contents of the following button group display type (BTNGR#n_DSP_TY). When the flag HDGR=1 (when the HD button group exists), no button group coexists with a button group having a conventional SD normal aspect ratio (4:3). Thus, the use of a data structure is facilitated by allocating the HD button group to the flag.

Abstract: An optical disk apparatus has a control portion for, based on address information and authentication information read out from an optical disk, providing access to a specific server via a communication line, thereby acquiring extensible information, and a reproducing portion for reproducing and outputting the acquired extensible information. In this optical disk apparatus, if an optical disk is not provided, authentication processing cannot be carried out, and extensible information cannot be acquired. Thus, extensible information can be reproduced with security.

Abstract: An information playback apparatus according to one aspect of the present invention has a first acquisition unit configured to acquire contents from an information storage medium, a second acquisition unit configured to acquire expansion information from at least one of the information storage medium and an external apparatus via a communication line, a storage unit configured to store the expansion information acquired by the second acquisition unit in accordance with the type of information, and a playback unit configured to play back the contents acquired by the first acquisition unit, and to play back the expansion information stored in the storage unit in synchronism with playback of the contents.