JP2007141336A - Dvd video reproducing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a "DVD video reproducing system" that can make reproduction output in each sync device corresponding to each parental level in an efficient configuration. <P>SOLUTION: The source device 1 converts the presentation data for the parental level presentation matching one of synch devices 51 as a presentation data for the presentation in each different angle into the distribution data including them by time-division multiplexing, and distributes to each synch device 51 through the on-board LAN 4. Each sink device 51 extracts the presentation data of the angle matching the parental level set in it from the distributed data and outputs to the display 52 or the voice output device 53. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a DVD video playback system that performs playback output of a DVD-Video disc using a plurality of output devices.

  A DVD-Video playback system that plays back and outputs DVD-Video discs using multiple output devices is connected to a source device that includes a DVD drive that reads DVD-Video discs, and the source device via a bus or network. The source device reads out the presentation data recorded on the DVD-Video disc via the DVD drive and distributes it to each sink device, and the data distributed by each sink device represents A system for outputting a presentation is known (for example, Patent Document 1).

Here, in DVD-Video, a viewing restriction technique using a parental level is adopted. This technique is a DVD-Video playback device in which a parental level range including a parental level preset in the DVD-Video playback device is defined among presentations recorded on a DVD-Video disc. Only to play.
Special Table 2002-535197

  Now, when a DVD video playback system is configured with a source device and a plurality of sink devices, if a DVD-Video disc is played back according to a single parental level, the parental level suitable for the user of each sink device When they are different, all users cannot view the DVD-Video according to the parental level corresponding to them.

  On the other hand, the parental level is set independently for each sink device, and the source device performs independent DVD-Video disc playback and data distribution operations according to the parental level of each sink device. With this configuration, it becomes possible to reproduce and output DVD-Video at a parental level suitable for the user of the sink device in each sink device. However, such a configuration causes a reproduction operation of the source device and duplication of distribution data to each sink device, and thus such a configuration is hardly an efficient configuration.

  Therefore, the present invention provides an efficient DVD-Video disc playback output according to an individual parental level for each sink device in each sink device in a DVD video playback system including a source device and a plurality of sink devices. It is a problem to be realized by a simple configuration.

  In order to achieve the above object, the present invention provides a DVD video playback system having a source device for reading data from a DVD-Video disc and a plurality of sink devices connected to the source device via a transmission path. , Parental level management means that manages the parental level set for each sink device, and reads the presentation data recorded on the DVD-Video disc, and generates distribution data including the read presentation data A distribution data generating means for distributing the distribution data generated by the distribution data generating means to the plurality of sink devices, and the parental block recorded on the DVD-Video disc in the distribution data generating means The presentation included in the parental block when Distribution that includes at least the parental level corresponding to the parental level set for one of the sink devices, including the presentation data of the angle that constitutes the angle block. The data is generated. However, the distribution data generation means configures the angle block so as to include at least an angle corresponding to each parental level set for any of the sink devices, and the presentation data of each angle is used as the angle data. Include presentation data with parental level corresponding to.

  As described above, in this DVD video playback system, the source device at least displays the presentation data set with the parental level corresponding to the parental level set in any of the sink devices, with presentations of different angles. All the presentation data reproduced by at least one sink device among the presentation data corresponding to each parental level is converted to each sync device by converting into distribution data included as presentation data and distributing to each sink device. Deliver to the device.

  Since the parental level presentation data is distributed using the angle block in this way, according to the DVD video playback system, each sink device can detect the own sync device included in the angle block. By extracting the presentation data of the angle corresponding to the set parental level, and reproducing and outputting it, the reproduction output of the presentation of the different parental level in each sink device can be distributed and the reproduction of other sink devices It can be done in parallel with output.

  That is, according to the present invention, in order to perform reproduction output of presentation data of different parental levels in each sink device in parallel with other sink devices, in the source device, an independent DVD-Video disk for each sink device. There is no need to perform any playback operation or data distribution operation. Therefore, according to the present invention, it is possible to realize reproduction output of presentations of different parental levels in each sink device with an efficient configuration.

  Here, in such a DVD video playback system, when the parental block recorded on the DVD-Video disc becomes a playback target in the distribution data generation means, any of the parental blocks included in the parental block is played back. In addition to generating the distribution data including only the presentation data in which the parental level corresponding to the parental level set for the sink device is set as the presentation data of the angle constituting the angle block, In the distribution data generation means, the angle block is configured to include only angles corresponding to each of the parental levels set for any of the sink devices, and the presentation data for each angle is included in the angle as the presentation data. Corresponding parental level It is preferable to contain a setting presentation data.

  In this way, presentation data having a parental level that does not correspond to any sink device is not included in the distribution data distributed from the source device to each sink device. Unnecessary reproduction operations and distribution operations to each sink device can be eliminated.

  Note that, as described above, such a DVD-Video playback system uses an angle block to substitute time-division multiplexed presentation data corresponding to the parental level corresponding to each sink device and distribute it to each sink device. In addition, presentation data corresponding to the parental level corresponding to each sink device may be time-division multiplexed and distributed to each sink device by a structure other than the angle block.

  As described above, according to the present invention, in a DVD video playback system including a source device and a plurality of sink devices, playback of a DVD-Video disc according to an individual parental level for each sink device in each sink device The output can be performed with an efficient configuration.

Hereinafter, a DVD video playback system according to an embodiment of the present invention will be described taking application to a DVD video playback system mounted on an automobile as an example.
FIG. 1 shows the configuration of a DVD video playback system according to this embodiment.
As shown in the figure, the DVD video playback system includes a DVD drive 3 provided as an external storage device of the source device 1 for accessing the source device 1 and the mounted DVD-Video disc 2, an in-vehicle LAN 4, one or more A monitor system 5 is provided. Each monitor system 5 includes a sink device 51, a display device 52 that displays video input from the sink device 51, an audio output device 53 that outputs audio output from the sink device 51, and a user interface unit. 54.

  The source device 1, each sink device 51, and each user interface unit 54 are connected to the in-vehicle LAN 4. Note that the in-vehicle LAN 4 may be shared with other systems other than the DVD video playback system, and devices constituting other systems may be connected to the in-vehicle LAN 4.

Next, FIG. 2 shows an internal configuration of the source device 1 and the sink device 51.
As illustrated, the source device 1 includes a navigation manager 11, a PS demultiplexing unit 12 (PS-Demux 12), a video transcoding unit 13, a reconstruction buffer 14, a dummy data generation unit 15, a PS multiplexing unit 16 (PS -Mux 16) and an in-vehicle LAN interface 17.

  Each sink device 51 includes a local in-vehicle LAN interface 511, a decode manager 512, and a presentation engine 513. The presentation engine 513 includes a local PS demultiplexing unit 5131 (local PS-Demux 5131), a video decoder 5132, a sub-picture decoder 5133, an HLI decoder 5134, an audio decoder 5135, and a synthesis processing unit 5136.

  Now, the data recorded on the DVD-Video disc 2 is composed of presentation data storing the substance of the presentation output to the user and navigation data for controlling the execution of the presentation.

Part of the presentation data and navigation data is recorded on the DVD-Video disc 2 as a PS (Program Stream).
Further, the DVD-Video disc 2 is played back in units of PGC as shown in FIG. 3a. The PGC playback sequence / playback order is defined in advance for each PGC. However, one parental block may be configured by a plurality of PGCs having different parental level ranges, and the playback sequence / playback order may be defined for the parental block instead of the PGC. In the figure, “PTLi” indicates that the parental level range is only the parental level i, and “PTLmn” indicates the parental level range between the parental level m and the parental level. To express. The same applies to the following drawings.
In a general DVD-Video playback device, when a parental block is to be played back, a set of DVD-Video playback devices set in the DVD-Video playback device is selected from a plurality of PGCs constituting the parental block. The PGC in which the parental level range including the rental level is defined is selected and reproduced. That is, for example, when the parental level 7 is set in the DVD-Video playback device, the corresponding parental level range is 3-8 as shown by the broken arrow in the figure. The corresponding parental level range in the parental block is 4-8, the corresponding parental level range in the parental block is 7-8, and the corresponding parental level range is 3-8. Each PGC is played back in order.

Next, as shown in FIG. 3b, each PGC as described above can be composed of CELLs to be reproduced sequentially. However, an angle block can be included in PGC instead of CEL. The angle block is composed of a plurality of CELLs associated with angle numbers. In the figure, “AGLp” represents the angle number p. The same applies to the following drawings.
Here, CELLs constituting an angle block can be associated with one or a plurality of angle numbers, but one angle number can be associated with only one CELL. That is, one CELL can be shared for a plurality of angle numbers. Then, angle block playback in a general DVD-Video playback device is selectively associated with an angle number set in the DVD-Video playback device by a user operation or the like among a plurality of CELLs in the angle block. This is done by playing a single CELL. That is, for example, when the angle 2 is set in the DVD-Video playback device, the CELL that does not constitute an angle block (corresponding to all angles) as indicated by the broken arrow in the figure. Each CELL is reproduced in the order of CELL corresponding to angle 2 in the angle block, CELL corresponding to angle 2 in the angle block, and CELL not constituting the angle block (corresponding to all angles).

Next, as shown in FIG. 3c, each CELL is composed of one or more VOBUs. Such a VOBU column corresponds to the PS. Actually, the VOBUs of different CELLs constituting the angle block are arranged in an interleaved manner as shown in FIG. 3d in units of ILVUs composed of one or a plurality of VOBUs.
As shown in FIG. 3c, each VOBU is composed of one NV_PACK, 0 or 1 or more V_PACK, 0 or 1 or more A_PACK, and 0 or 1 or more SP_PACK. NV_PACK includes reproduction control information PCI and data search information DSI. The PCI includes highlight information HLI that defines buttons used in the menu.

  Then, the VOBU NV_PACK becomes the navigation data in the PS described above, and the VOBU V_PACK, A_PACK, and SP_PACK become the presentation data in the PS. Note that V_PACK stores moving image data, A_PACK stores audio data, and SP_PACK stores subpicture data.

  In such a configuration, the PS demultiplexing unit 12 of the source device 1 configures a PS that the navigation manager 11 reads from the DVD-Video disc 2 via the DVD drive 3 and supplies to the PS demultiplexing unit 12. Each VOBU is demultiplexed, NV_PACK separated from each VOBU is sent to the navigation manager 11 and the PS multiplexing unit 16, V_PACK separated from the PS is sent to the video transcoding unit 13, and A_PACK and SP_PACK separated from the PS are reconfigured Stored in the buffer 14.

  Next, the video transcoding unit 13 performs rate conversion for converting the video data of V_PACK sent from the PS demultiplexing unit 12 into video data having a data rate set by the navigation manager 11, and the video after the rate conversion is performed. The V_PACK storing the data is stored in the reconfiguration buffer 14.

The dummy data generation unit 15 generates a V_PACK storing video data representing a predetermined video image prepared in advance and outputs the V_PACK to the PS multiplexing unit 16.
Next, the PS multiplexing unit 16 multiplexes the V_PACK, NV_PACK, A_PACK, and SP_PACK stored in the reconfiguration buffer and the V_PACK input from the dummy data generation unit 15 in a form designated by the navigation manager 11. The PS is reconfigured and output to the in-vehicle LAN interface 17. Then, the in-vehicle LAN interface 17 distributes the PS input from the PS multiplexing unit 16 to each sink device 51 via the in-vehicle LAN 4.

  In such a configuration, the navigation manager 11 uses the playback level according to the navigation data read from the DVD-Video disc 2 via the DVD drive 3, the parental level of each sink device 51 managed, the PS In accordance with the navigation data represented by NV_PACK sent from the demultiplexing unit 12, the PS reading from the DVD-Video disc 2 and the PS reconfiguration in the PS multiplexing unit 16 are performed as follows. To control.

  That is, the navigation manager 11 reads out the VOBU constituting the PGC and the PGC CELL of the parental block from the DVD-Video disc 2 via the DVD drive 3 according to the playback sequence determined according to the navigation data. However, regarding the PGC of the parental block, only the VOBUs constituting the CELL of the PGC in which the parental level range corresponding to the parental level of any of the sink devices 51 is set among the PGCs in the parental block. Are read from the DVD-Video disc 2 via the DVD drive 3.

  That is, for example, there are currently only two sync devices 51 having a parental level of 3 and a sync device 51 having a parental level of 6, and the PGC and parental block playback sequence to be performed according to the navigation data is shown in FIG. As shown in 4a, if the playback target should be advanced in the order of the parental block 42 including PGC41, PGC421-423, and PGC43, it belongs to the parental block among the PGCs in FIG. 4a. The first PGC41 CELL VOBU, the parental level range in the parental block 42 with the PGC421 CELL VOBU, and the parental level range 5-8 in the PGC423 CELL VOBU in the parental block 42 Then, the CELL VOBU of the last PGC 43 not belonging to the parental block is read. Here, since the PGC 422 having a parental level range of 4 in the parental block 42 does not correspond to the parental level of any of the sink devices 51, the CELL VOBU of the PGC 422 is not read. Also, for each PGC that reads CELL VOBU, for each angle block included in the PGC, the CELL is configured only for the CELL associated with the angle of the smallest angle number among the CELLs included in the angle block. Read VOBU.

  Here, each VOBU PACK of each CELL read from the DVD-Video disc 2 in this way is stored in the reconstruction buffer by the PS demultiplexing unit 12 as described above. However, V_PACK is stored in the reconstruction buffer after being converted into V_PACK storing the moving image data after rate conversion by the video transcoding unit 13.

Then, the navigation manager 11 defines a new playback sequence using each PACK stored in the reconstruction buffer and the V_PACK generated by the dummy data generation unit 15, and uses the playback sequence newly defined in the PS multiplexing unit 16. Reconstruct PS that is suitable for playback.
Here, it is assumed that this newly defined playback sequence is obtained by replacing the parental block in the original playback sequence with a new PGC. The new PGC includes an angle block that includes a presentation corresponding to the parental level corresponding to each sink device 51 in the parental block as an angle presentation.

  That is, for example, if the original playback sequence is the playback sequence shown in FIG. 4A, the playback sequence shown in FIG. 4B is newly defined by replacing the parental block 42 in this playback sequence with the newly set PGC 44. Here, the newly set PGC 44 includes angle blocks 441 and 442 having the same number of angles as the number of parental levels managed for any of the sink devices 51. The number of angle blocks is the maximum number of CELLs included in the PGC corresponding to the parental level managed for any of the sink devices 51 among the PGCs of the parental block 42 in the playback sequence shown in FIG. And the same number. The example shown in FIG. 4b is for the case where there are only two sink devices 51 having a parental level of 3 and a sink device 51 having a parental level of 6. In this case, any one of the sink devices 51 Since the number of parental levels managed for 51 is two, that is, parental level 3 and parental level 6, each angle block 441, 442 has two angles. Also, the number of angle blocks in the reproduction sequence shown in FIG. 4b is 2 because the PGC 423 corresponding to the parental level 6 of the parental block 42 in the reproduction sequence shown in FIG. 4a has the maximum number (two) of CELLs. Become.

  Each angle included in each angle block has a one-to-one correspondence with one of the parental levels managed for one of the sink devices 51, and the mth angle of each nth angle block. As the CELL, the nth CELL of the PGC corresponding to the parental level associated with the mth angle of the parental block 42 in the reproduction sequence shown in FIG. 4a is used. However, if there is no corresponding CELL in the parental block 42 in the reproduction sequence shown in FIG. 4a, a CELL including only the V_PACK generated by the dummy data generation unit 15 is generated and used instead. In addition, the CELL having the longest playback time in the angle block is inserted by inserting the V_PACK generated by the dummy data generation unit 15 into the VOBU constituting the CELL so that the playback times of the respective CELLs belonging to the same angle block are the same. Adjust the playback time length in the angle block of CELL other than. Note that the video represented by V_PACK generated by the dummy data generation unit 15 represents a message for notifying the completion of the output of the presentation for another user in the other sink device.

  Therefore, for example, if there are only two sink devices 51 having a parental level of 3 and a sink device 51 having a parental level of 6, parental level 3 is set at the first angle (AGL1). The parental level 6 is associated with the second angle (AGL2). Then, as shown in FIG. 4b, the CELL of the first angle (AGL1) of the first angle block 441 is the first angle (AGL1) in the parental block 42 in the reproduction sequence shown in FIG. 4a. The first CELL of the PGC 421 corresponding to the parental level 3 associated with is used. Similarly, the CELL of the second angle (AGL2) of the first angle block 441 is associated with the second angle (AGL2) in the parental block 42 in the reproduction sequence shown in FIG. 4a. The first CELL of the PGC 423 corresponding to the parental level 6 is used. Then, as shown in FIG. 4b, the CELL of the first angle (AGL1) of the second angle block 442 is set to the first angle (AGL1) in the parental block 42 in the reproduction sequence shown in FIG. 4a. Since the second CELL of the PGC 421 corresponding to the associated parental level 3 does not exist, the newly generated CELL including only the V_PACK generated by the dummy data generation unit 15 is stored. The CELL of the second angle (AGL2) of the second angle block 442 is the parental associated with the second angle (AGL2) in the parental block 42 in the reproduction sequence shown in FIG. 4a. The second CELL of PGC 423 corresponding to level 6 is stored.

Further, as described above, the playback time of each CELL belonging to the same angle block in FIG. 4B is adjusted to be the same by using the V_PACK generated by the dummy data generation unit 15 for the VOBUs constituting the CELL.
Now, the navigation manager 11 causes the PS multiplexer 16 to reconfigure the PS suitable for reproduction according to the newly defined reproduction sequence. For example, the PS is reconfigured as follows. become.
That is, if FIG. 4 b is a newly defined playback sequence, the reconfigured PS is an ILVU that is a group of one or more VOBUs of each CELL of the angle block 441 and a column of VOBUs that constitute the CELL of the PGC 41 A column interleaved according to the order of the CELL to which the ILVU belongs, a column in which the ILVU of each CELL of the angle block 442 is interleaved, and a column of VOBUs constituting the CELL of the PGC 43 are configured. The CELL in the angle block can be shared for a plurality of angles as described above. Therefore, even in the reconfigured PS, if the CELLs that should be the CELLs of different angles in the angle block are the same CEL, the CELLs are shared as the CELLs of the different angles.

  Now, the navigation manager 11 provides information on the newly defined playback sequence such as angle block configuration information, and various control information necessary for PS decoding in the other sync device 51, such as the angle block configuration information. In addition, a process of distributing to each sink device 51 via the in-vehicle LAN 4 is also performed. In addition, the navigation manager 11 manages the sink device 51 when defining a new playback sequence individually to the decode manager 512 of each sink device 51 via the in-vehicle LAN interface 17 as described above. An angle number setting command is issued to request the setting of the angle number associated with the parental level as the angle number of the playback target angle.

  Next, in the sink device 51, the local PS demultiplexing unit 5131 demultiplexes each VOBU forming the PS received from the source device 1 by the local in-vehicle LAN interface 511, and sends the NV_PACK separated from the VOBU to the decode manager 512. The V_PACK separated from the PS is sent to the video decoder 5132, the A_PACK separated from the PS is sent to the audio decoder 5135, and the SP_PACK separated from the PS is sent to the sub-picture decoder 5133. Also, the local PS demultiplexing unit 5131 sends the HLI included in the NV_PACK separated from the PS to the HLI decoder 5134.

However, the local PS demultiplexing unit 5131 demultiplexes only the VOBU specified by the decode manager 512 for the VOBUs included in the CELL forming the angle block among the VOBUs included in the PS received from the source device 1. set to target.
Next, the video decoder 5132 sends the moving image obtained by decoding the moving image data included in the input V_PACK to the composition processing unit 5136. Also, the sub picture decoder 5133 sends the sub picture obtained by decoding the sub picture data included in the input SP_PACK to the composition processing unit 5136, and the HLI decoder 5134 decodes the input HLI and sends it to the composition processing unit 5136. Then, the composition processing unit 5136 generates an image including a button defined by the input sub-picture and the HLI, and combines it with the input moving image and outputs it as a display image to the display device 52 via the display control device. To do. On the other hand, the audio decoder 5135 decodes the audio data included in the input A_PACK and outputs it to the audio output device 53.

  Here, the decode manager 512 manages the angle number of the angle reproduced by the own sink device, and sets / changes this angle number in accordance with the angle number setting command received from the source device 1. As described above, the angle number managed by the decode manager 512 is determined by the PGC CELL read from the DVD-Video disc 2 corresponding to the parental level of the sink device 51 (FIG. 4a). This is the angle number to be associated when it is included as an angle CELL (FIG. 4b).

  Then, based on the angle block configuration information included in the control information received from the navigation manager 11 of the source device 1 via the local in-vehicle LAN interface 511, the decode manager 512 receives the VOBU included in the PS received from the source device 1. Of these, the VOBU included in the CELL forming the angle block is designated to the local PS demultiplexing unit 5131 so that only the VOBU associated with the managed angle number is to be demultiplexed.

Hereinafter, setting of the parental level of each sink device 51 in such a DVD video playback system will be described.
That is, the navigation manager 11 of the source device 1 manages the parental level of each sink device 51. The navigation manager 11 of the source device 1 stores in advance a password of the administrator for authenticating the administrator of the DVD video playback system as authentication information.

On the other hand, when the user interface unit 54 of each monitor system 5 receives a parental level change operation including a password input operation from the user, the user interface unit 54 notifies the source device 1 of user operation information representing the content of the received user operation.
Then, the navigation manager 11 of the source device 1 authenticates the password indicated by the notified user operation information using the stored authentication information, and if the authentication is successful, the user indicated by the notified user operation information. The parental level of the sink device 51 belonging to the same monitor system 5 as the user interface unit 54 that is the transmission source of the user operation information is changed among the parental levels of the managed sink devices 51 according to the contents of the operation. To do.

  As described above, according to the present embodiment, in the source device 1, presentation data of a presentation in which a parental level corresponding to one of the sink devices 51 is defined is time-divided as presentation data of presentations of different angles. Multiplexed and included PSs are converted and distributed to each sink device 51, and each sink device 51 decodes and outputs presentation data of an angle corresponding to its parental level from the distributed PS, In each sink device 51, reproduction output of a DVD-Video disc corresponding to an individual parental level is realized for each sink device 51. Here, the source device 1 does not reproduce the presentation corresponding to the parental level that does not correspond to any of the sink devices 51, and does not include it in the presentation data distributed to each sink device 51. Therefore, the reproduction operation of the source device 1 and the duplication of the distribution data to each sink device 51 do not occur, and the efficient reproduction output of the DVD-Video disc is realized. Further, by using the angle block, each sink device 51 can reproduce and output presentations of different parental levels in parallel with the distribution.

  In the above embodiment, the presentation data of the presentation corresponding to the parental level corresponding to each sink device 51 is time-division multiplexed and distributed to each sink device 51 using the angle block. The presentation data of the presentation corresponding to the parental level corresponding to each sink device 51 may be time-division multiplexed and distributed to each sink device 51 by a structure other than the angle block.

1 is a block diagram showing a configuration of a DVD video playback system according to an embodiment of the present invention. It is a block diagram which shows the structure of the source device and sink device which concern on embodiment of this invention. It is a figure which shows the reproducing structure of a DVD-Video disc. It is a figure showing an example of generation of distribution data concerning an embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Source device, 2 ... DVD-Video disk, 3 ... DVD drive, 4 ... In-vehicle LAN, 5 ... Monitor system, 11 ... Navigation manager, 12 ... PS demultiplexing part, 13 ... Video transcoding part, 14 ... Reconfiguration Buffer 15, dummy data generation unit 16, PS multiplexing unit 17, in-vehicle LAN interface 51, sink device 52, display device 53, audio output device 54, user interface unit 511, local in-vehicle LAN Interface 512, decode manager 513, presentation engine, 5131 ... local PS demultiplexing unit, 5132 ... video decoder, 5133 ... sub-picture decoder, 5134 ... HLI decoder, 5135 ... audio decoder, 5136 ... synthesis processing unit.

Claims (4)

A DVD video playback system comprising a source device for reading data from a DVD-Video disc, and a plurality of sink devices connected to the source device via a transmission path,
The source device is
Parental level management means for managing the parental level set for each sink device;
Distribution data generation means for reading presentation data recorded on a DVD-Video disc and generating distribution data including the read presentation data;
Distribution means for distributing the distribution data generated by the distribution data generation means to the plurality of sink devices;
When the parental block recorded on the DVD-Video disc is to be played, the distribution data generation means is configured to at least one of the sink devices of the presentation data included in the parental block. Generate distribution data that includes the presentation data with the parental level corresponding to the set parental level as the presentation data of the angle that constitutes the angle block,
The distribution data generation means configures the angle block so as to include at least an angle corresponding to each parental level set for any of the sink devices, and the angle data is used as presentation data for each angle. A DVD-Video playback system including presentation data in which a parental level corresponding to is set. The DVD video playback system according to claim 1,
When the parental block recorded on the DVD-Video disc becomes a playback target, the distribution data generation means is configured to set the parental set for any of the sink devices included in the parental block. Generate distribution data that includes only the presentation data with the parental level corresponding to the level included in the angle block as the angle presentation data,
The distribution data generating means configures the angle block so as to include only angles corresponding to each of the parental levels set for any of the sink devices, and as the presentation data of each angle, the angle A DVD-Video playback system including presentation data in which a parental level corresponding to is set. The DVD video playback system according to claim 1 or 2,
When the sink device distributes the distribution data constituting the angle block from the source device, the presentation data of the angle corresponding to the parental level set for the own sink device is included in the angle block. A DVD video reproduction system characterized by extracting and reproducing and outputting. In a DVD video playback system having a source device for reading data from a DVD-Video disc and a plurality of sink devices connected to the source device via a transmission path, data recorded on the DVD-Video disc from the source device is recorded. A method of distributing to each sink device,
Obtaining a parental level set for each sink device in the source device;
When parental blocks recorded on a DVD-Video disc are subject to playback, distribution data including presentation data with each parental level set included in the parental block is time-division multiplexed. Generating step;
Distributing the generated distribution data to the plurality of sink devices; and a data distribution method in a DVD video reproduction system.