JP4529937B2 - AV data editing apparatus and method - Google Patents

Description

  The present invention manages information and flags for managing playback control of AV data recorded on a large-capacity recording medium such as a hard disk or an optical disk, and is related automatically according to the value of the playback control flag set by the user The present invention relates to an AV data editing apparatus and method capable of updating reproduction control information of AV data.

  In recent years, AV data editing apparatuses that record, reproduce, and edit AV data using an optical disk such as a DVD or a BD (Blu-ray Disc) and a hard disk as information recording media have become widespread. In standards such as DVD and BD, a management information file is defined for managing information such as reproduction and name of AV data in the disc. For example, management information called a playlist is defined as a unit for controlling playback of AV data by the user. A playlist is a unit in which the user implicitly expects playback to be performed continuously. The simplest playlist example is a series of AV data (contents) from recording start to recording stop. In addition, this play list has some attributes for playback. For example, in order to prevent others from seeing the playlist defined by BD, playback of the playlist and acquisition of information are required. You can set a flag to allow or not. (For example, refer to Patent Document 1 and Patent Document 2) This technique looks at a flag (DVR_protect_flag) that controls whether or not playback is possible in the management information for managing all playlists in the same folder, and first confirms the password for permitting playback. If the number input is OK, the reproduction is permitted regardless of the value of the flag (Playback_control_flag) that controls whether or not the playlist that has been individually set is reproducible, and the input of the personal identification number can be omitted.

  On the other hand, a playlist defined by BD or the like includes a real playlist directly associated with a clip and a virtual playlist indirectly associated with the clip. Here, the relationship between the real play list, the virtual play list, and the clip will be described with reference to FIG. Both the real playlist and the virtual playlist are composed of one or more logical playback units called PlayItems. PlayItem manages the playback start time and end time of a clip, and is associated with clip information for managing a clip that is AV data. Since the real playlist is directly associated with this clip, editing the real playlist affects the clip, but the virtual playlist only indirectly references the clip, so edit the virtual playlist. But the clip has no effect. Therefore, if a part or all of the real playlist is erased, the corresponding clip is also erased, but even if the virtual playlist is erased, the clip is not erased.

Next, FIG. 10A shows a data configuration diagram for illustrating an example of the operation in the prior art. There are three real playlists and two virtual playlists, each referring to a clip as indicated by the arrows in the figure. FIG. 10B shows the result when the attribute of the real play list is changed by the conventional technique with respect to the data having the configuration as shown in FIG. 10A. FIG. 10C shows the result when the attribute of the virtual playlist is changed by the conventional technique for the data having the configuration as shown in FIG. 10A. As shown in these drawings, even if the attributes of the real playlist and the virtual playlist (here, the flag PLAYBACK_CONTROL_FLAG indicating whether playback is possible) are changed, in the conventional technology, the setting of the flag for controlling playback of the playlist is the same. It is impossible to reflect the information of the flag that controls whether or not reproduction is possible in another playlist that refers to the AV data (hereinafter referred to as “clip”). In other words, even if the flag for controlling whether or not the real play list can be reproduced is turned on, the information is not transmitted to the virtual play list. The inconsistency that virtual playlists that refer to data can be played unconditionally occurs.
Japanese Patent No. 3716920 Blu-ray Disc System Description Blu-ray Disc System Description Blu-ray Disc Rewritable Format Part3 Audio Visual Basic Specification

  In a system for managing AV data (hereinafter referred to as a clip) in a playback unit called a playlist, the problem to be solved by the present invention is a flag for controlling whether or not playback of all playlists belonging to the same folder is possible. Appropriate attribute information is appropriate for all playlists without causing inconsistencies such as virtual playlists that reference the same clip can be played unconditionally even though real playlists are prohibited from playing. The attribute information can be set.

  The present invention relates to a system for managing AV data in a reproduction unit called a playlist, all playlist information management means for managing information of all playlists (both real and virtual) in a folder, and a designated playlist. Playlist attribute changing means for changing the attributes of the target, target clip attribute changing means for changing the attributes of all clips referred to by the playlist, and all clip information managing means for managing information of all clips in the folder The playlist attribute change determination means for determining whether or not to change the attribute of the playlist that refers to the changed clip, and the disc writing means for writing to the updated playlist information disc. Features.

  The AV data editing apparatus and method according to the present invention has the inconsistency that a virtual play list that refers to the same clip can be played back while a flag indicating whether playback is possible is prohibited in the real play list. In contrast, even when the user changes the flag indicating whether or not the virtual playlist can be reproduced, there is an advantage that the flags of other playlists can be automatically updated to achieve overall consistency.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numeral represents the same component or the same function and operation.

(Embodiment 1)
FIG. 2 is a block diagram showing the configuration of the AV data editing apparatus and method according to Embodiment 1 of the apparatus of the present invention. In FIG. 2, this AV data editing apparatus and method includes all playlist information management means 11, playlist attribute change means 12, target clip attribute change means 13, all clip information management means 14, playlist attribute change determination means 15, disc Writing means 16 is provided.

  Each component of the AV data editing apparatus and method will be described. First, all playlist information management means 11 manages information on all playlists (both real and virtual) in the folder, and playlist attribute changing means 12 changes the attributes of the designated playlist to change all the playlists. The playlist information management means 11 is notified of the update of the playlist information, and the target clip attribute changing means 13 changes the attribute of the target clip and notifies the all clip information management means 14 of the update of the clip information. The clip information management unit 14 manages information of all clips in the folder, and the playlist attribute change determination unit 15 determines whether to change the attribute of the playlist being referred to based on the changed clip information. If the change is necessary, the playlist attribute changing means 12 is instructed to change the attribute, and the disc writing means In 6, write the information of the play list that have changed on disk.

  Next, the operation of the AV data editing apparatus and method according to the first embodiment will be described with reference to FIG. First, an attribute change such as a flag for controlling whether or not a specific playlist can be reproduced is performed by a user operation in the playlist attribute changing unit 12, and the playlist attribute update information is transmitted to all the playlist information managing unit 11. Then, the updated playlist information is written to the disc by the disc writing means 16, while the target clip attribute changing means 13 changes the attribute of the target clip based on the clip information in the playlist of the playlist whose attribute has been changed. The clip attribute update information is transmitted to the all clip information management unit 14, and the clip information whose attribute has been changed by the playlist attribute change determination unit 15 and all the playlists managed by the all playlist information management unit 11. Determine whether there is a playlist whose attributes should be changed based on the list information, and change If the playlist is present should notifies the playlist attribute change instruction information to the playlist attribute changing means 12, repeats the above operations until subsequent playlist to be changed in the playlist attribute change judging means 15 is eliminated.

  FIG. 3A shows a data configuration diagram for illustrating an example of the operation of the AV data editing apparatus and method according to the first embodiment. There are three real playlists and two virtual playlists, each referring to a clip as indicated by the arrows in the figure. FIG. 3B shows an AV data editing apparatus and method according to the first embodiment in which the real playlist attribute (here, the flag PLAYBACK_CONTROL_FLAG indicating whether playback is possible) is changed with respect to the data having the configuration shown in FIG. It shows the result when it is performed in. FIG. 3C shows a change in the attribute of the virtual playlist (here, the flag PLAYBACK_CONTROL_FLAG indicating whether playback is possible) for the data having the configuration shown in FIG. It shows the result when it is performed in. As shown in these figures, the attributes of the real play list and the virtual play list are consistent.

  As described above, according to the first embodiment, it is possible to automatically update the attributes of other playlists that refer to the same clip by changing the attributes of the real playlist or the virtual playlist.

(Embodiment 2)
FIG. 4 is a block diagram showing the configuration of the AV data editing apparatus and method according to Embodiment 2 of the present invention apparatus. In FIG. 4, 31 is a user inquiry means for confirming to the user even when the playlist attribute change determination means 15 determines that the playlist needs to be changed, and 301 indicates the user inquiry means 31. User determination information. Since other reference numerals having the same reference numerals as those in FIG. 2 have the same functions, detailed description thereof is omitted.

  Next, the operation of the AV data editing apparatus and method of the second embodiment configured as described above will be described with reference to FIG. Even if it is determined that the playlist attribute needs to be newly changed based on the clip information and the playlist information updated by the playlist attribute change determination unit 15, the user inquiry unit 31 confirms the user's right or wrong. The attribute information of the playlist is updated only when the user approves, and the attribute is set for the playlist according to the information determined by the user.

  As described above, according to the second embodiment, by retaining the information determined by the user, other playlist attributes are automatically changed without changing the playlist attributes unintended by the user. It is possible to update.

(Embodiment 3)
FIG. 5 is a block diagram showing the configuration of the AV data editing apparatus and method according to Embodiment 3 of the apparatus of the present invention. In FIG. 5, 41 is a playlist combining means for combining two specified playlists (real playlists or virtual playlists), 401 is a playlist to be combined, and 42 is a list after combining. A target playlist attribute change determining unit for determining the attribute of the playlist, 402 is a playlist attribute change instruction, and 403 is playlist combination update information. Since other reference numerals having the same reference numerals as those in FIG. 2 have the same functions, detailed description thereof is omitted.

  Next, the operation of the AV data editing apparatus and method according to Embodiment 3 configured as described above will be described with reference to FIG. First, two playlists to be combined are designated by a user operation, and two playlists are combined in the playlist combining unit 41. “Combination” here means that the management information of the playlist becomes one, and the PlayItems included therein have all the PlayItems included in the original two playlists, and do not affect the clip. . The target playlist attribute change determination means 42 determines whether or not the attributes of the two original playlists are different, and only when they are different, notifies the playlist attribute change means 12 of a playlist attribute change instruction, and a series of processes Is completed, the playlist combining unit 41 notifies the all playlist information managing unit 11 of playlist combination update information. The rest of the procedure is the same as each process described in the second embodiment, and a detailed description thereof will be omitted.

  FIG. 6A shows the original attributes when the real playlists 1 and 2 are combined with the data having the configuration shown in FIG. 3A by the AV data editing apparatus and method according to the third embodiment. Shows the result of the change. FIG. 6B shows the original attributes when the real playlists 1 and 3 are combined with the data having the configuration shown in FIG. 3A by the AV data editing apparatus and method according to the third embodiment. Shows the result of the change. FIG. 6C shows the original attributes when the real playlists 2 and 3 are combined with the data shown in FIG. 3A by the AV data editing apparatus and method according to the third embodiment. Shows the result of the change. FIG. 6D shows the original attributes when the virtual playlists 1 and 2 are combined with the data shown in FIG. 3-A by the AV data editing apparatus and method according to the third embodiment. Shows the result of the change. As shown in these drawings, the attributes after joining the playlists (here, the flag PLAYBACK_CONTROL_FLAG indicating whether playback is possible) are consistent.

  As described above, according to the third embodiment, it is possible to automatically update the attributes of other playlists that have an influence upon the combination of playlists.

(Embodiment 4)
FIG. 7 is a block diagram showing the configuration of an AV data editing apparatus and method according to Embodiment 4 of the present invention apparatus. In FIG. 7, 51 is a user inquiry means for checking the user even when the target playlist attribute change determination means 42 determines that the attributes of the two playlists are different and one of the playlists needs to be changed. Yes, 501 is user determination information indicated by the user by the user inquiry means 51. Since other reference numerals having the same reference numerals as those in FIG. 2 have the same functions, detailed description thereof is omitted.

  Next, the operation of the AV data editing apparatus and method of the fourth embodiment configured as described above will be described with reference to FIG. Even if the target playlist attribute change discriminating means 42 determines that the attributes of the two playlists are different and one of the playlists needs to be changed, the user inquiry means 51 confirms the user's right or wrong. The attribute information of the playlist is updated according to any of the attributes determined by.

  As described above, according to the fourth embodiment, it is possible to change the attributes of a playlist with the intention of the user in joining the playlists.

(Embodiment 5)
FIG. 8 is a block diagram showing the configuration of an AV data editing apparatus and method according to Embodiment 5 of the present invention apparatus. In FIG. 8, 61 is a real play list deleting means for deleting the designated real play list, 601 is clip information in the real play list, and 62 is management information of the target clip and target clip deletion for deleting the clip. 602 is clip deletion update information, 603 is deletion clip information, 604 is virtual playlist information, and 63 is whether or not there is a virtual playlist that affects the deleted clip. Virtual playlist information change determining means for determining, 605 is virtual playlist configuration change instruction information, 64 is virtual playlist information updating means for changing the configuration of the virtual playlist, and 606 is virtual playlist update information. It is. Since other reference numerals having the same reference numerals as those in FIG. 2 have the same functions, detailed description thereof is omitted.

  Next, the operation of the AV data editing apparatus and method according to the fifth embodiment configured as described above will be described with reference to FIG. First, a real play list to be deleted is specified by a user operation, the play list is deleted in the real play list deleting means 61, and the clip referred to by the real play list is deleted in the target clip deleting means 62 to manage all clip information. The clip deletion update information is notified to the means 14, and the all clip information management means 14 notifies the playlist attribute change determination means 15 of the clip information, and also notifies the virtual playlist information change determination means 63 of the deletion clip information to The play list information change discriminating means 63 discriminates whether or not there is a virtual play list that needs to be changed based on the virtual play list information and the erasure clip information. Virtual playlist Notifies the configuration change instruction information, to update the information of the virtual play list to be in the virtual play list information updating means 64. Here, if it is necessary to delete the virtual playlist by deleting the clip, the virtual playlist is deleted. If only a part of the virtual playlist is deleted, the configuration of the PlayItem in the virtual playlist is changed to change the virtual playlist information. And the virtual playlist update information 606 is notified to all the playlist information management means 11. After the series of processing is completed, the real playlist deletion means 61 notifies the all playlist information management means 11 of the real playlist deletion update information. The other procedures are the same as those of the processes described in the first embodiment, and thus detailed description thereof is omitted.

  FIG. 9A shows the result when the real play list is erased by the AV data editing apparatus and method of the fifth embodiment for the data having the configuration as shown in FIG. As shown in these figures, the attributes after deletion of the real play list (here, the flag PLAYBACK_CONTROL_FLAG indicating whether playback is possible) are consistent.

  As described above, according to the fifth embodiment, it is possible to automatically update the attributes of an affected virtual playlist when deleting a real playlist.

  The present invention may be realized as a computer program. Further, the program can be distributed through a telecommunication line or a recording medium, and the present invention can be implemented using a computer. As described above, the present invention will be described in detail with reference to the preferred embodiments. However, the present invention is not limited to these embodiments, and is preferably modified within the technical scope of the present invention described in the claims. It will be apparent to those skilled in the art that modifications and variations are possible.

  The AV data editing apparatus and method according to the present invention is a system for managing AV data in a reproduction unit called a playlist. All playlist information management for managing information of all playlists (both real and virtual) in a folder. Means, playlist attribute changing means for changing attributes of a designated playlist, target clip attribute changing means for changing attributes of all clips referred to by the playlist, and information on all clips in the folder All playlist information managing means for managing the playlist, playlist attribute change judging means for judging whether or not to change the attribute of the playlist referring to the changed clip, and the updated playlist information disc Depending on the writing means for writing, the flag indicating whether playback is possible or not is re-displayed in the real playlist. Even if the user changes the flag indicating whether or not the virtual playlist can be played back, the virtual playlist that refers to the same clip is no longer inconsistent, and there is no inconsistency. It can also be applied to applications where it is necessary to automatically update the flags of other playlists to ensure overall consistency.

A diagram showing the relationship between clips, PlayItems, and playlists FIG. 1 is a block diagram showing an example of an AV data editing apparatus and method according to Embodiment 1 of the present invention. Block diagram showing an example of a playlist used in the AV data editing apparatus and method of the present invention Block diagram showing an example of an AV data editing apparatus and method according to Embodiment 2 of the present invention Block diagram showing an example of an AV data editing apparatus and method according to Embodiment 3 of the present invention The figure showing the result at the time of the combination of the real play lists 1 and 2 in Embodiment 3 of this invention Block diagram showing an example of an AV data editing apparatus and method according to Embodiment 4 of the present invention Block diagram showing an example of an AV data editing apparatus and method according to Embodiment 5 of the present invention The figure showing the result at the time of real play list deletion in Embodiment 5 of the present invention Block diagram showing an example of a playlist used in conventional processing

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 All playlist information management means 12 Playlist attribute change means 13 Target clip attribute change means 14 All clip information management means 15 Playlist attribute change determination means 16 Disc writing means 31 User inquiry means 41 Playlist combination means 42 Target playlist attributes Change determination means 51 User inquiry means 61 Real playlist deletion means 62 Target clip deletion means 63 Virtual playlist information change determination means 64 Virtual playlist information update means 101 Playlist attribute update information 102 Clip information in playlist 103 Clip attribute update information 104 clip information 105 playlist information 106 playlist attribute change instruction information 107 updated playlist information 301 user determination information 401 List 402 Playlist attribute change instruction 403 Playlist combination update information 501 User determination information 601 Clip information in real playlist 602 Clip deletion update information 603 Delete clip information 604 Virtual playlist information 605 Virtual playlist configuration change instruction information 606 Virtual playlist update information

Claims (6)

In a system for managing AV data in a reproduction unit called a playlist, all playlist information management means for managing information of all playlists in a plurality of playlists in a folder, and designation among the plurality of playlists It has been to change the attributes of a play list, said the playlist attribute change means for notifying the attribute change to all playlist information management means, and all clip information management means for managing information of all of the clip in the folder, the attribute change all clips of the attributes referenced by playlist change, the target clip attribute changing means for notifying an attribute change in the total clip information management means, other that refer to clip had the changed of when determining whether to change the attribute of the play list, it is determined that the required change, the playlist And playlists attribute change judging means for notifying sexual changing means, wherein the notification from all the play list information management means, AV, characterized in that it comprises a disk write means for writing the attribute information of the updated playlist to the disc Data editing device. It further comprises playlist combining means for combining two or more playlists, and target playlist attribute change determining means for determining which attribute to match when the attributes of the original playlist are different. The AV data editing apparatus according to claim 1. 3. The AV data editing apparatus according to claim 1, further comprising user inquiry means for making an inquiry to a user when a playlist attribute change is required in the playlist attribute change determination means. . 3. The AV data editing apparatus according to claim 2, further comprising user inquiry means for making an inquiry to a user when a playlist attribute change is required in the target playlist attribute change determination means. Real playlist erasure means for erasing a real playlist, target clip erasure means for erasing a clip referenced by the real playlist, and whether or not to update a virtual playlist affected by the erasure of the clip 5. The virtual play list information change determining means for making a determination and a virtual play list information updating means for updating the virtual play list information are further provided. AV data editing device described in 1. In a system that manages AV data in a reproduction unit called a playlist , a first step of changing the attribute of a designated playlist among a plurality of playlists in a folder, and a change in the attribute of the playlist A second step of writing the information to the disc, a third step of changing the attributes of all clips referenced by the playlist whose attribute has been changed, and other playlists referring to the changed clip. An AV data editing method comprising: a fourth step for determining whether or not to change an attribute; and a fifth step for instructing the change when it is determined in the fourth step that the attribute is to be changed.

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