JP2002269922A - Recording medium and its playback device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a business use information recording medium that can be prevented from being played back with a consumer playback device without the need for revising the standards of a disk structure or the like and to provide a recorder and a playback device for the information recording medium. SOLUTION: The recording medium provided with a recording information area to record recording information and a management information recording area to record management information of the recording information is characterized in that the management information includes the information denoting the type of the recording information to be processed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium such as a high-density optical disk capable of recording information such as images and sounds represented by a DVD at a high density, and a reproducing apparatus for reproducing information from the recording medium. Belongs to the technical field.

[0002]

2. Description of the Related Art Conventionally, as an optical disk on which information such as images and sounds is recorded, a so-called LD (Laser Disk),
CDs (Compact Disks) are widely used.

In these LDs, image information and audio information are recorded together with time information indicating the time at which each piece of information should be reproduced with reference to the reproduction start position of each LD. For this reason, in addition to general normal reproduction for reproducing recorded information in the recording order, for example, C
In D, it is possible to select and listen to only a desired song from among a plurality of recorded songs, or to perform playback by changing the playback order at random.

[0004] There are two types of applications for reproducing information recorded on these recording media, such as business applications such as theater movies and consumer applications such as reproduction in ordinary households.

[0005]

SUMMARY OF THE INVENTION However, DVD
If the standard of the disc structure and the like is the same for commercial and consumer optical discs, there is a problem that a commercial optical disc is reproduced by a consumer information reproducing apparatus.

That is, for example, taking a movie as an example, a consumer-use optical disk on which the movie is recorded is generally sold after a lapse of several months to several years after being shown on a road show. In this case, if a commercial optical disk recording the movie during the road show screening is illegally distributed to the market, it will cause a great damage to the creator and entertainer of the movie.

As a solution to such a problem, it is only necessary to make the disc structure and the like different for business use and for consumer use. In such a case, at least two types of optical discs and reproducing apparatuses are required for one movie. Since it is necessary to manufacture, mass production becomes difficult, and it becomes difficult to reduce the price of the optical disk and the reproducing apparatus.

As another method, it is conceivable that the distribution channel in the market is set to be different between the business use and the consumer use while keeping the same disc structure and the like for the business use and the consumer use. In this case, it is actually difficult to eradicate the outflow of commercial movie software to the general market.

Further, as another method, there is a method of multiplexing a so-called copy guard signal with a recording signal of an optical disk. Even in this case, when a duplicate optical disk is produced by a replication method, a consumer reproducing apparatus is used. Playback will be possible.

SUMMARY OF THE INVENTION An object of the present invention is to provide an information recording medium capable of preventing a commercial recording medium from being reproduced by a consumer reproducing apparatus without changing the standard of the disc structure and the like. To provide a playback device.

[0011]

SUMMARY OF THE INVENTION In view of the above problems, the invention according to claim 1 includes a recording information area for recording recording information, and a management information recording area for recording management information of the recording information. A recording medium, wherein the management information includes information indicating a type of the recording information to be handled.

According to the information recording medium configured as described above, it is possible to prevent a commercial recording medium from being reproduced by a consumer reproducing apparatus without changing the standard of the disk structure and the like. Becomes

According to a third aspect of the present invention, there is provided a recording medium comprising: a recording information area for recording recording information; and a management information recording area for recording management information of the recording information. In a reproducing apparatus for a recording medium having information indicating the type of recording information to be handled, a reading unit for reading the recording information on the recording medium, an extracting unit for extracting information indicating the type of the recording information, Determining means for determining whether to reproduce the recording medium based on the information indicating the type of the information.

According to the reproducing apparatus configured as described above, it is possible to prevent a commercial recording medium from being reproduced by a consumer reproducing apparatus without changing the standard of the disk structure and the like. Become.

[0015]

Next, a preferred embodiment of the present invention will be described. The embodiment described below describes an embodiment in which the present invention is applied to the DVD.

[1] Embodiment of Information Recording Medium First, a description will be given of a physical and logical configuration and operation of a DVD which is an embodiment of an information recording medium to which the present invention is applied.

First, a recording format (physical recording format) of video information and audio information on a DVD
Will be described with reference to FIG. As shown in FIG.
The DVD 1 of the embodiment has a lead-in area LI at the innermost periphery and a lead-out area LO at the outermost periphery, during which the video information and the audio information are respectively ID (identified). VTS3 with number
(VTS # 1 to VTS # n) and stored. Here, a VTS (Video Title Set) is a title (such as a movie, etc., which the creator intends to present to the viewer, such as a movie (having the same attributes such as the number of streams and specifications of subpictures, and the corresponding language). A single movie). More specifically, for example, for a single movie, a plurality of movies in different languages are recorded as titles, or in the same movie. Even so, the theater version and the special version are each stored as separate titles. The video manager 2 is recorded at the head of the area where the VTS 3 is recorded. The information recorded as the video manager 2 includes, for example, a menu indicating the name of each title, information for preventing illegal copying, an access table for accessing each title, and the like, and the video recorded on the DVD 1. Information relating to the entire information and audio information is recorded.

One VTS 3 includes control data 11
, A plurality of VOBs 1 each having an ID number
It is divided into 0 and recorded. Here, a plurality of VOBs
10 is a VOB set (VOB set).
S). This VOB set is a VOB set for the actual part in order to distinguish between the control data 11 which is other data constituting the VTS 3 and a plurality of VOBs 10 which are entities of video information and audio information. .

In the control data 11 recorded at the head of the VTS 3, a PGCI (Program Chain) which is various information relating to a program chain which is a logical division obtained by combining a plurality of cells (cells will be described later).
Information) is recorded. In each VOB 10, in addition to the control information, a substantial part of video information and audio information (video or audio itself other than the control information) is recorded. One VOB 10 includes a plurality of cells 20 each having an ID number.
It consists of. Here, one VOB 10 is configured to be completed by a plurality of cells 20, and one cell 20 does not straddle two VOBs 10.

Next, one cell 20 is composed of a plurality of VOB units (VOBU) 30 each having an ID number. Here, the VOB unit 30 is an information unit including each of video information, audio information, and sub-video information (refers to sub-video information such as subtitles in a movie).

One VOB unit 30 includes a navigation pack 41, a video pack 42 as video information,
It comprises an audio pack 43 as audio information and a sub-picture pack 44 as sub-picture information. Here, only the packet containing the image data and the pack header are recorded as the video pack 42, and only the packet containing the audio data and the pack header are recorded as the audio pack 43. Further, as the sub-picture pack 44, only a packet including graphic data such as characters and graphics as sub-pictures and a pack header are recorded. It should be noted that there are eight types of audio that can be recorded on the DVD 1 and 32 types of sub-images that can be recorded, according to standards.

The playback time corresponding to one VOB unit 30 (one navigation pack 41 and one navigation pack 4
1 is recorded so as to have a length of 0.4 second or more.

Further, in one VOBU, the navigation pack 41 always exists at the head, but the video pack 42, the audio pack 43, and the sub-picture pack 44 do not necessarily need to exist, and if they exist, the number and order of the Is free.

Finally, the navigation pack 41 is search information for searching for a video or audio to be displayed (specifically, an address on the DVD 1 where the video or audio to be displayed is recorded). DSI (Data Search Informatio
n) PCI (Presentation Control Informati) which is information on display control when displaying a packet 51 and video, audio, and the like searched based on the DSI packet 51
on) packet 50, and one VOB
All video data contained in U is one or more G
An OP (Group Of Picture) 52 is provided.
It should be noted that the PCI data 50 includes, for a selection item selected by the viewer, highlight information that defines the display and operation when the item is selected. According to the highlight information, for example, in an image (a so-called menu screen) in which an item to be selected by the viewer is displayed, a change in the screen display for the selected item, a display position to be changed, and a command corresponding to the selected item (the selected item). (Instructions to be executed corresponding to the items) are set. Here, necessary to configure and display the menu screen,
Image information for composing and displaying frames, selection buttons, and the like is recorded as a sub-picture pack 44, which is the above-described sub-video information.

Further, the GOP 52 is an MPEG2 (Moving Picture Exposure) which is an image compression method employed when recording image information on the DVD 1 in the present embodiment.
ertsGroup 2) This is the smallest image unit that can be played back independently and is defined in the standard of the system.

Here, the outline of the MPEG2 system will be described. Generally, in a continuous frame image, frame images before and after one frame image are:
In many cases, they are similar to each other and have a mutual relationship. MPE
The G2 method pays attention to this point, and interpolates another frame image existing between the plurality of frame images based on a plurality of frame images transferred at intervals of several frames based on a motion vector or the like of the original image. It is a method of generating by.
In this case, when recording the another frame image,
By simply recording information on the difference and the motion vector between the plurality of frame images, it is possible to reproduce the other frame image by predicting from the plurality of frame images with reference to them at the time of reproduction. . Thereby, compression recording of an image becomes possible.

In the recording format having the hierarchical structure shown in FIG. 1 described above, each section can be freely set by the manufacturer according to its intention and recorded. By performing reproduction based on the logical structure described later for each of these sections, various types of reproduction can be performed.

Next, a logical format (logical structure) combining information recorded by the physical divisions shown in FIG. 1 will be described with reference to FIG. In the logical structure shown in FIG. 2, information is not actually recorded on the DVD 1 in the structure, but each data (particularly, cell 20) shown in FIG. 1 is combined with the logical structure shown in FIG. Information for reproduction (access information or time information, etc.) is recorded on the DVD 1, especially in the control data 11.

For the sake of clarity, the description will be made from the lower hierarchy of FIG. 2. By selecting and combining a plurality of cells 20 in the physical structure described in FIG. The program 60 is logically constructed based on the intention of the producer. This program 60 is also the smallest logical unit that can be accessed by a command by a system controller in a playback device to be described later by identifying a section. The creator can define one or more of the programs 60 as a minimum unit that can be freely selected and viewed by a viewer.
It is called TT (Part OfTitle).

One program 60 includes a plurality of cells 2
Since one cell 20 is selected and logically configured, one cell 20 is used in a plurality of programs 60, that is, a so-called re-use of the cell 20 in which one cell 20 is reproduced in a plurality of different programs 60. It is also possible to do.

Here, regarding the number of one cell 20,
When the cell 20 is handled in the physical format shown in FIG. 1, it is handled as a cell ID number (indicated as cell ID # in FIG. 1), and when it is handled in the logical format shown in FIG. They are treated as cell numbers in the order of description.

Next, by combining a plurality of programs 60, one PGC (Program Chain) 61 is logically constructed based on the intention of the producer. The above-mentioned PGCI (Program Chain Information) is defined in units of the PGC 61, and the PGCI includes a reproduction order of each program 60 when each program 60 is reproduced. A program number is allocated.), A reproduction order of the cells 20 (a unique cell number is allocated to each cell 20 according to the reproduction order),
The address which is the recording position of each cell 20 on the DVD 1, the first cell 2 to be reproduced in one program 60
A number of 0, a reproduction method of each program 60, and various commands (commands that can be designated by the producer for each PGC 61 or each cell 20) are included. The recording position of the PGCI on the DVD 1 is in the control data 11 as described above, or in the case of the PGCI relating to the menu in the video manager 2, it is in the control data (not shown) of the video manager 2. .

One PGC 61 has the PGCI
In addition to this, substantial data such as images and sounds are included as a combination of the programs 60 (in other words, as a combination of the cells 20).

Further, in one PGC 61, it is possible to reuse the cell 20 shown in the description of the program 60 (that is, to use the same cell 20 by different PGCs 61). As for the cells 20 to be used, in addition to the method of reproducing the cells 20 in the order stored in the DVD 1 (reproduction of continuously arranged cells), the cells 20 are reproduced regardless of the order stored in the DVD 1 (for example, later). The producer can select a method (for example, reproducing the recorded cell 20 first) (reproduction of the non-continuously arranged cells).

Next, one title 62 is logically constituted by one or a plurality of PGCs 61. This title 62
Is a unit corresponding to one movie, for example, and is complete information that the producer wants to provide to the viewer of the DVD1.

One or a plurality of titles 62 logically constitute one VTS 63. This VTS6
The titles 62 included in each of the titles 3 have common attributes. For example, a movie in a different language corresponds to a single movie in the same language.
Further, information corresponding to one VTS 63 shown in FIG. 2 corresponds to information included in one VTS 3 shown in FIG. That is, the logical VT shown in FIG.
All the information included in S63 is recorded as one VTS3.

By specifying the information divided in the physical structure by the producer based on the logical format described above, a video (movie or the like) to be viewed by the viewer is formed.

Since it is necessary to record information of various layers as described above, the information having the above-mentioned recording format can be used to record a single movie, as in the case of the above-mentioned DVD1, and to correspond to the movie. This is particularly suitable for an information recording medium having a large storage capacity capable of recording voices and subtitles of a plurality of languages on the same optical disc.

Next, among the image information and audio information having the above-mentioned physical structure and logical structure, the title set information, the playback device designation ID, and the playback device limitation information according to the present invention will be described in detail. The above information can be recorded in two types of recording modes described below. (1) First Recording Mode The present invention is characterized in that the title set information Its is recorded in the video manager 2. FIG. 3 shows a recording example according to the first recording mode. The title set information Its is information on whether or not to limit the playback device that plays back the VTS 3 recorded on the DVD 1 to a specific playback device. Specifically, as shown in FIG. 3, when the title set information Its is “00”, all the VTSs 3 recorded on the DVD 1 do not limit the playback device, that is, what playback device is used. Also all V
This means that TS3 can be reproduced. Also,
If the title set information Its is "11", the DV
All the VTSs 3 recorded in D1 limit the playback device, that is, it means that none of the VTSs 3 can be played back without using a certain playback device. Further, when the title set information Its is "10", the VTS3 recorded on the DVD 1 includes those that limit the playback device and those that do not limit the playback device.
This means that some VTSs 3 cannot be reproduced without using a certain reproducing device, and other VTSs 3 can be reproduced using any reproducing device. The VTS 3 for limiting the playback device corresponds to the above-described recording information for business use, and the VT for which the playback device is not limited.
S3 corresponds to record information that can be shared for consumer use, business use, and consumer use.

The video manager 2 further includes playback device designation information Id corresponding to each of the VTSs 3 defined to limit playback devices by the above-mentioned title set information Its. The playback device designation information Id is information for identifying a playback device permitted to play back the VTS 3, that is, what kind of information is for business use, for consumer use, or for business use. Information indicating the type of playback device, such as whether the playback device is handled, is described in a text format. Specifically, each playback device is assigned a playback device code for each type, and stores its own playback device code in a built-in memory or the like. The playback device designation information Id designates a playback device code of a playback device that is permitted to play the DVD1. According to the above-mentioned title set information Its, DVD
1, it is possible to know whether or not the VTS 3 on the playback device limits the playback device, but it is not possible to know from the title set information alone what kind of playback device is actually limited. Therefore, when the title set information Its specifies that the playback device is limited (“11” and “10”).
The playback device designation Id shows information indicating which playback device is limited to the playback device.

Therefore, by referring to the title set information Its and the playback device designation ID, it is determined whether the VTS 3 on the DVD 1 can be played back by all playback devices, or whether the VTS 3 cannot be played back without using a specific playback device. And if it is limited to a specific playback device, it is possible to know which playback device it is specifically.

Further, in the present invention, as shown in FIG. 3, the playback device limitation information Idl is included in the control data 11 in the VTS 3. This playback device limitation information Idl
Is information indicating whether or not the VTS 3 to which the control data 11 belongs limits the playback device. The above-mentioned title set information Its indicates whether all of the plurality of VTSs 3 included in the DVD 1 can be reproduced by all reproduction apparatuses, or can be reproduced only by a limited reproduction apparatus, or a reproduction apparatus that can reproduce the information. VTS3 limited
And VTS3 that is not limited to this. On the other hand, the playback device limitation information Idl here is:
This is information indicating whether or not the playback device is limited not for all VTSs 3 in the DVD 1 but only for one VTS 3 to which the control data 11 belongs.
Specifically, as shown in FIG. 3, when the playback device limitation signal is “00”, it means that the VTS 3 does not limit the playback device, that is, it can be played back using any playback device. On the other hand, when the playback device limited signal is “1”
In the case of "1", it means that the VTS 3 limits the playback device, that is, the VTS 3 cannot be played back without using a specific playback device. Reproduction device limited signal is "11"
In the case of, the specific playback device capable of playing back the VTS 3 is determined by the playback device designation Id described above.
Can be found by referring to.

As described above, according to the present invention, the video manager 2 which is the first area accessed on the DVD
The information about the limitation of the reproducing device for all the recording information included in the DVD is recorded in the. Therefore, the D
When all the recording information (that is, VTS) in the VD is unified for business use or consumer use, it is possible to know whether or not there is a limitation on the playback device without having to access each VTS individually, so that it is possible to promptly. Playback can be started or the user can be notified that playback is not possible. For the user, it is inconvenient for the user to access all the VTSs for a long time and then be notified that none of the VTSs can be reproduced by the reproducing apparatus. In this regard, according to the present invention, when the limitation of the playback device for all the recorded information is unified, it is possible to determine whether or not the playback is possible immediately after the disc is inserted, so that the usability of the user can be improved. Also, even if the VTS is not defined in a unified manner, by accessing each VTS, it is possible to determine whether or not the VTS limits the playback device.
S can be mixed. (2) Second Recording Mode In the first recording mode, whether or not to limit the playback device for each VTS 3 is set as playback device limitation information Idl for each VT.
It is included in the control data 11 in S3. Alternatively, there is a method in which the video manager 2 collectively includes information on whether or not to limit the playback device for each VTS 3. FIG. 4 shows a recording example of the playback apparatus limitation information Idl in this case. As shown in FIG. 4, related information IR about each VTS 3 is recorded in the video manager 2, and a part of the related information IR of the VTS 3
dl is included. The meaning of the individual playback device limitation information Idl is the same as in the case of the first recording mode. When the playback device limitation signal is “00”, the VTS 3 does not limit the playback device, and the playback device limitation signal is “11”. "Means that VTS3
Will limit the playback device. When the playback device limitation information Idl is "11", the playback device is limited to a playback device designation Id in the video manager 2.
Stipulated by

As described above, if the playback device limitation information for each VTS 3 is collectively recorded in the video manager 2, the VTS having the limitation of the playback device and the VT having no limitation are provided.
VT selected by the user even if S is mixed
The presence or absence of the limitation of the playback device of S can be known without searching the VTS, and the user can be promptly notified of the availability of the playback. It should be noted that this point will be more specifically described later in the section of the operation of the playback apparatus. [2] Embodiment of Recording Apparatus Next, an embodiment of a recording apparatus for recording control information, video information, and audio information including the above-described title set information and the like on the DVD 1 will be described with reference to FIG. At the beginning,
The configuration and operation of the recording apparatus according to the present embodiment will be described.

As shown in FIG. 5, the recording apparatus S1 according to the present embodiment comprises a VTR (Video Tape Recorder) 70,
A memory 71, a signal processing unit 72, hard disk devices 73 and 74, a controller 75, a multiplexer 76,
It comprises a modulator 77 and a mastering device 78.

Next, the operation will be described. In VTR70,
Recording information R which is a material such as music information and video information to be recorded on the DVD 1 is temporarily recorded. And VT
The recording information R temporarily recorded in R70 is output to the signal processing unit 72 in response to a request from the signal processing unit 72. The signal processing section 72 performs A / D conversion on the recording information R output from the VTR 1 and then performs a compression process by the MPEG2 method, multiplexes the music information and the video information on the time axis, and outputs the multiplexed signal Sr. Thereafter, the output compressed multiplex signal Sr is temporarily stored in the hard disk device 73.

In parallel with the above, the memory 71 previously divides the recording information R into partial recording information Pr, and inputs the recording information R in advance based on a cue sheet ST in which control information and the like regarding each of the partial recording information Pr is described. The content information relating to the partial record information Pr is temporarily stored and output as a content information signal Si based on a request from the signal processing unit 72. The signal processing unit 72 includes a time code Tt corresponding to the recording information R output from the VTR 70 and the memory 7.
1 to generate and output an access information signal Sac corresponding to the partial record information Pr with reference to the time code Tt based on the content information signal Si output from the hard disk drive 74. Is stored. The above processing is executed for the entire record information R.

When the above processing is completed for all the record information R, the controller 75
3 and read out the access information signal Sac from the hard disk drive 74, generate additional information DA based on these, and store it in the hard disk drive 74. The contents of the title set information, the playback device designation information, and the playback device limitation information in the present embodiment are determined in advance by the creator of the DVD 1 and are stored in the hard disk 74. Then, under the control of the signal processing unit 72, information corresponding to the video manager 2 and the controller 11 is included in the additional information DA. That is, in the first recording mode, the title set information and the playback device designation information are used as information to be recorded as the video manager 2, and the playback device limitation information is stored in each VT.
It is included in the additional information DA as information recorded as the control data 11 in S3. On the other hand, in the second recording mode, the title set information, the playback device designation information, and the playback device limitation information are all included in the additional information DA as information recorded as the video manager 2.

On the other hand, the controller 75 manages the time of each operation of the signal processing unit 72, the hard disk device 73, and the hard disk device 74, and
The additional information signal Sa corresponding to A
4 and outputs an information selection signal S for time-division multiplexing of the compressed multiplexed signal Sr and the additional information signal Sa.
Generate and output c.

Thereafter, the compressed multiplexed signal Sr and the additional information signal Sa are time-division multiplexed by the multiplexer 76 based on the information selection signal Sc, and output as an information added compressed multiplexed signal Sap. At the stage of the information-added compression multiplex signal Sap, the information to be recorded is composed of the control signal, the video information and the audio information by the switching operation of the controller 75 using the information selection signal Sc, and the physical structure shown in FIG. Format). If there is sub-picture information, it is input to the decoding processing unit 72 by another means such as an FD device (not shown), and is processed in the same manner as video and audio information.

After that, the modulator 77 adds an error correction code (ECC) such as Reed-Solomon code and modulates such as 8-16 modulation to the output information-added compressed multiplex signal Sap, and modulates the disc recording signal Sm. It is generated and output to the mastering device 78.

Finally, the mastering device 78 records the disk recording signal Sm on a stamper disk which becomes a master (cutting die) when manufacturing an optical disk.
Then, an optical disk as a generally commercially available replica disk is manufactured by a replication device (not shown) using the stamper disk.

As described above, the title set information,
A DVD in which the playback device specifying information and the playback device limitation signal are recorded according to the first or second recording mode is created. [3] Embodiment of Reproducing Apparatus Next, an embodiment of a reproducing apparatus for reproducing information recorded on the DVD 1 by the recording apparatus S1 will be described with reference to FIGS. First, the overall configuration and operation of the playback device of the embodiment will be described with reference to FIG.

As shown in FIG. 6, the reproducing apparatus S 2 according to the present embodiment comprises a pickup 80, a demodulation correction section 81,
Stream switches 82 and 84, track buffer 83, system buffer 85, demultiplexer 8
6 and VBV (Video Buffer Verifier) buffer 87
, A video decoder 88 and a sub-picture buffer 89
, A sub-picture decoder 90, an audio buffer 92, an audio decoder 93, and a PCI buffer 9.
4, a PCI decoder 95, and a highlight buffer 96.
, A highlight decoder 97, an input unit 98, a display 99, a system controller 100, a drive controller 101, a spindle motor 102,
It is constituted by a slider motor 103. In addition,
The configuration shown in FIG. 6 describes only a portion related to the reproduction of images and sounds in the configuration of the reproducing apparatus S2.
Servo circuits for servo-controlling the pickup 80, the spindle motor 102, the slider motor 103, and the like are the same as those in the related art, and thus description and detailed description thereof are omitted.

Next, the overall operation will be described. The pickup 80 includes a laser diode (not shown), a deflecting beam splitter, an objective lens, a photodetector, and the like. Receiving, DVD1
Detection signal Sp corresponding to the information pit formed above
Is output. At this time, a method similar to that of the prior art is applied to an objective lens (not shown) so that the light beam B is accurately irradiated on the information track on the DVD 1 and accurately focused on the information recording surface on the DVD 1. Performs tracking servo control and focus servo control.

The detection signal Sp output from the pickup 80 is input to a demodulation / correction section 81, where demodulation processing and error correction processing are performed to generate a demodulation signal Sdm, which is output to a stream switch 82 and a system buffer 85. .

The opening and closing of the stream switch 82 to which the demodulated signal Sdm is input is controlled by a switch signal Ssw1 from the drive controller 101. When the stream switch 82 is closed, the input demodulated signal Sdm is passed through as it is to the track buffer 83. I do. On the other hand, when the stream switch 82 is open, the demodulated signal Sdm is not output, and unnecessary information (signal) is not input to the track buffer 83.

The track buffer 83 to which the demodulated signal Sdm is inputted is constituted by a FIFO (First In First Out) memory or the like, and temporarily stores the inputted demodulated signal Sdm and the stream switch 84 is closed. , The stored demodulated signal Sdm is continuously output.
The track buffer 83 stores each G in the MPEG2 system.
In addition to compensating for the difference in the data amount for each OP, a demodulated signal Sdm that is discontinuously input due to a track jump at the time of reading data divided into the interleaved units IU or the like is continuously output. This is for eliminating the interruption of reproduction due to discontinuity. The processing related to the above-described title information and the like is mainly performed by the system buffer 85, the system controller 100, and the like, the details of which will be described later.

The stream switch 84 to which the demodulated signal Sdm is continuously input prevents the buffer in the subsequent stage from overflowing or becoming empty and interrupting the decoding process in the separation process in the demultiplexer 86. Opening and closing are controlled by a switch signal Ssw2 from the system controller 100.

On the other hand, the system buffer 85 to which the demodulated signal Sdm is input in parallel with the track buffer 83
D1 is first detected when loading, DVD
1, the control information 11 of the VTS 3 and the management information (video manager 2) relating to the entire information recorded in the VTS 3 are stored as the control information Sc.
0, and temporarily stores the DSI data for each of the navigation packs 41 as needed during information reproduction, and outputs the DSI data to the system controller 100 as control information Sc.

The demultiplexer 86 to which the demodulated signal Sdm is continuously input via the stream switch 84 separates the video information, audio information, sub-video information and PCI data for each navi-pack 41 from the demodulated signal Sdm. ,
Video signal Sv, sub-picture signal Ssp, audio signal Sad
VBV buffers 8 as PCI signals Spc, respectively.
7, sub picture buffer 89, audio buffer 9
2 and the PCI buffer 94. In some cases, the demodulated signal Sdm includes a plurality of languages as separate streams as audio information or sub-video information. In such a case, the stream selection signal Slc from the system controller 100 outputs the desired language. Are respectively selected and output to the audio buffer 92 or the sub-picture buffer 89.

The VBV buffer 87 to which the video signal Sv is input is constituted by a FIFO memory or the like, and temporarily stores the video signal Sv and outputs it to the video decoder 88. The VBV buffer 87 is for compensating the variation of the data amount of each picture in the video signal Sv compressed by the MPEG2 system. And
The video signal Sv in which the variation in the data amount is compensated is input to the video decoder 88, demodulated by the MPEG2 method, and output to the mixer 91 as a demodulated video signal Svd.

On the other hand, the sub-picture buffer 89 to which the sub-picture signal Ssp is inputted temporarily stores the inputted sub-picture signal Ssp and outputs it to the sub-picture decoder 90.
The sub-picture buffer 89 is for outputting sub-picture information included in the sub-picture signal Ssp in synchronization with image information corresponding to the sub-picture information. Then, the sub-video signal Ssp synchronized with the video information is input to the sub-picture decoder 90, and demodulated to perform demodulation.
The signal is output to the mixer 91 as spd.

When the sub-video signal Ssp includes image information for forming a frame, a selection button, and the like necessary for forming and displaying a menu screen, a high-level signal from the system controller 100 is output. Based on the light control signal Sch, the display state of a selection button or the like to be displayed is changed and output.

The demodulated video signal Svd output from the video decoder 88 and the demodulated sub-video signal Sspd (corresponding to the demodulated video signal S
Synchronized with vd. ) Are mixed by the mixer 91 and output to a display unit such as a CRT (Cathod Ray Tube) (not shown) as a final image signal Svp to be displayed.

Next, the audio buffer 92 to which the audio signal Sad is input is constituted by a FIFO memory or the like, and temporarily stores the input audio signal Sad and outputs it to the audio decoder 93. The audio buffer 92 is for outputting the audio signal Sad in synchronization with the video signal Sv or the sub-video signal Ssp including the corresponding video information, and delays the audio signal Sad according to the output status of the corresponding video information. Let it. And
The audio signal Sad time-adjusted so as to synchronize with the corresponding video information is output to the audio decoder 93, subjected to a predetermined decoding, and demodulated audio signal Sad
It is output to a speaker or the like (not shown) as d. If it is detected that the audio needs to be temporarily interrupted (paused) at the time of reproduction immediately after access, a pause signal Sca is output from the system controller 100 to the audio decoder 93, and the audio decoder 93 outputs the pause signal Sca. The output of the demodulated audio signal Sadd is temporarily stopped.

Further, the PCI to which the PCI signal Spc is input is
The buffer 94 is configured by a FIFO memory or the like, temporarily stores the input PCI signal Spc, and outputs the PCI signal Spc to the PCI decoder 95. The PCI buffer 94 synchronizes the PCI data included in the PCI signal Spc with video information and sub-video information corresponding to the PCI data, and applies the PCI data to the video information or the sub-video information. is there. Then, the PCI buffer 94 synchronizes the corresponding PCI signal S with the corresponding video information or sub-video information.
As for pc, the highlight information included in the PCI data is separated by the PCI decoder 95 and is output to the highlight buffer 96 as the highlight signal Shi.
The part of the data other than the highlight information is the PCI information signal S.
It is output to the system controller 100 as pci.

The highlight buffer 96 to which the highlight signal Shi is input is constituted by a FIFO memory or the like.
The input highlight signal Shi is temporarily stored and output to the highlight decoder 97. Highlight buffer 9
6 performs time-axis compensation for accurately changing the display state of the selection item corresponding to the highlight information in response to the sub-video signal Ssp including the image information for the highlight information. It is a buffer to perform. Then, the highlight signal Shi subjected to the time axis compensation is decoded by the highlight decoder 97, and information included in the highlight signal Shi is output to the system controller 100 as the demodulated highlight signal Shid. here,
The system controller 100 outputs the above-described highlight control signal Sch in order to change the display state based on the highlight information based on the demodulated highlight signal Shid.

Based on the control information Sc input from the system buffer 85, the PCI information signal Spci input from the PCI decoder 95, and the input signal Sin input from the input unit 98 such as a remote controller, the system controller 100 outputs these signals. The switch signal Ssw2, the stream selection signal Slc, the pause signal Sca, and the highlight control signal Sch are output in order to perform the correct reproduction corresponding to the display signal Sdp, and the display signal Sdp is displayed in order to display the operation status of the reproduction apparatus S2. Output to a display 99 such as a liquid crystal display device.

Further, when the system controller 100 detects from the control information Sc or the like that track jump processing such as search is necessary for seamless reproduction, the drive controller 101
A seamless control signal Scsl corresponding to the track jump processing is output.

The drive controller 101, to which the seamless control signal Scsl has been input, sends a drive signal S to the spindle motor 102 or the slider motor 103.
Print d. In response to the drive signal Sd, the spindle motor 102 or the slider motor 103 moves the pickup 2 so that the light beam B irradiates the recording position on the DVD 1 to be reproduced, and changes the rotation speed of the DVD 1 to C.
LV control is performed (see the broken arrow in FIG. 6). In parallel with this,
When the pickup 2 is moving and the demodulation signal Sdm is not output from the demodulation correction unit 3, the drive controller 101 outputs the switch signal Ssw1 based on the seamless control signal Scsl, opens the stream switch 82, and simultaneously outputs the demodulated signal Sdm. Starts to be output, the stream switch 82 is closed and the demodulated signal Sdm is output to the track buffer 83.

Next, the operation of the reproduction apparatus S2, in particular, the operation of the system controller 100 according to the present invention will be described with reference to the flowchart shown in FIG. (1) First Reproduction Method First, the first reproduction method will be described. This first reproduction method is a reproduction method in a case where title set information and the like are recorded according to the first recording mode shown in FIG.
FIG. 7 is an operation flowchart of the first reproduction method.

First, the user plays the DVD 1 on the playback device S 2
Is set, the system controller 100 performs initial settings including servo system settings such as tracking servo and focus servo (step S1), and then accesses the video manager 2 to reproduce the title set information and reproduction shown in FIG. The necessary information including the device designation information is obtained (step S2). Then, the system controller 1
00 indicates that the acquired title set information is “00”, “1”
It is determined whether it is "0" or "11" (step S3).

When the title set information is “00”, all VTSs 3 included in the DVD 1 can be reproduced by any reproducing device without limiting the reproducing device.
A normal reproduction operation is performed. Specifically, one or more titles included in the DVD 1 are displayed on the CRT as a menu (step S4). When the user selects one title desired to be reproduced (step S5), the system controller 100 sets the V including the selected title.
The TS3 is searched, and the pickup is jumped to the position of the VTS3 on the DVD1 (step S6). Next, the control data 11 in the VTS 3 is read (step S7). And the system controller 1
00 acquires the PGCI included in the control data 11 (step S8), and according to the contents,
3 is performed (step S9).

On the other hand, if it is determined in step S3 that the title set information is “11”,
As for all VTSs 3 of VD1, the playback devices that can play back are limited. Therefore, the system controller 1
00 determines whether the playback device on which the DVD 1 is set corresponds to the playback device specified by the playback device designation information acquired in step S2 (step S1).
0). If applicable (step S10: Yes),
The process jumps to step S4 to perform normal reproduction (step S4
To S9). On the other hand, if the current playback device does not correspond to the playback device specified by the playback device designation information (step S10: No), the system controller 10
0 displays on the CRT that all titles recorded on the DVD 1 cannot be reproduced by the reproducing device (step S11), and the process is terminated (step S1).
2).

If it is determined in step S3 that the title set information is "10",
D1 is VTS3 which limits the playback device and VT which is not limited
This means that S3 and S3 are mixed. Therefore, it is necessary to individually check whether or not the title desired by the user to be reproduced can be reproduced by the reproduction apparatus, and then reproduce the title. Specifically, first, the title included in the DVD 1 is displayed on the CRT (step S13), and the user selects one of the titles (step S14). Next, the VTS containing the selected title
3, the pickup is jumped to the recording position on the DVD 1 (step S15), and the control data 11 included in the VTS 3 is read (step S15).
17). Since the control data 11 includes the playback device limitation information as shown in FIG. 3, the system controller 100 refers to the information and detects whether the VTS 3 limits the playback device (step S1).
7). If the VTS 3 does not limit the playback device, that is, if the playback device limitation information is “00”, the title can be played back by the current playback device. Therefore, the process jumps to step S8, and the VTS3
PGCI is obtained from the control data 11 in the
The reproduction is started (step S9).

On the other hand, if the VTS 3 limits the playback device, that is, if the playback device limitation information is “11” in step S17, the system controller 100 determines whether the current playback device is based on the playback device designation information. It is determined whether or not the content is included in the specified playback device (step S18). If the playback device is included in the specified playback device (step S18: Yes), the process jumps to step S8, acquires PCGI, and starts playback (step S18).
19, S20). On the other hand, if it is determined in step S18 that the content is not included in the specified playback device (step S1
8: No), the system controller 100 displays on the CRT that the title cannot be reproduced by the reproducing device currently used (step S19), and ends the process (step S20).

As described above, according to the first reproducing method,
When a DVD is set in the playback device, the system controller 100 first refers to the title set information in the video manager 2 to determine whether all titles in the DVD 1 limit the playback device. And
If there is no limitation on the playback device, the playback is started immediately. If there is a limitation on all titles in the DVD, it is determined whether or not the playback device is included in the specified playback device. If the playback device is the specified playback device, playback is started. If there is a limitation on the playback device for only some of the VTSs 3 in the DVD 1, the playback device limitation information of the VTS 3 selected by the user is checked to determine whether playback is possible. Thus, in the present invention, D
When the VD is set, the video manager that is read first includes title set information indicating the presence or absence of the limitation of the playback device. Therefore, in the case of a DVD in which the limitation of the playback device is unified, Since it is not necessary to search for individual VTSs and check whether there is a limitation for each VTS, it is possible to start reproduction quickly or to indicate that reproduction is not possible. Also, a DTS in which a VTS that limits the playback device and a VTS that does not limit the playback device coexist.
Also in VD, reproduction can be performed only when reproduction is possible by judging whether reproduction is appropriate. [2] Second Reproduction Method Next, a second reproduction method will be described. The second reproducing method is a method for reproducing a D recorded in accordance with the second recording mode shown in FIG.
The present invention relates to a VD reproducing method. FIG. 8 shows an operation flowchart of the second reproduction method.

This second reproduction method uses the set DV
Only the processing when DTS includes a VTS that limits the playback device and a VTS that does not limit the playback device is different from the first playback method. That is, in FIG. 8, the process from setting the DVD to checking the title set information (steps S21 to S23), the title set information is "00".
(Steps S24 to S29) and the process when the title set information is "11" (steps S30 to S32) are the processes (step S1) in the first reproduction method shown in FIG. To S3, S4 to S9, and S10 to S12), and a detailed description thereof will be omitted. However, FIG.
In the recording mode shown in (1), since the playback device limitation information for each VTS 3 is collectively recorded in the video manager 2, the system controller 100 proceeds to step S22.
In addition to title set information and playback device designation information,
The playback device limitation information for each VTS 3 is also obtained.

If the title set information is determined to be "10" in step S23, the DVD 1
VTS3 that limits the playback device and VTS3 that does not limit the playback device
And are mixed. Therefore, the DVD
1 is displayed on the CRT (step S
33) Then, the user is allowed to select one of the titles (step S34). Next, of the playback device limitation information stored in the video manager 2, playback device limitation information corresponding to the VTS 3 including the selected title is obtained (step S35), and whether the VTS 3 limits the playback device is determined. It is detected whether or not it is (step S36).
Here, unlike the case of the first playback method, the playback device limitation information is collectively recorded not in the control data 11 in each VTS 3 but in the video manager 2 (see FIG. 4), so that it is selected. There is no need to search the VTS 3 and read the control data 11 included therein. If the VTS 3 does not limit the playback device, that is, if the playback device limitation information is “00”, the title can be played back by the current playback device. Therefore, the process jumps to step S28 and the VTS
The PGCI is obtained from the control data 11 in 3 and reproduction is started (step S29).

On the other hand, if the VTS 3 limits the playback device, that is, if the playback device limitation information is “11” in step S36, the system controller 100 determines whether the current playback device is based on the playback device designation information. Whether or not the playback device is included in the designated playback device
(Step S37). If it is included in the designated playback device (step S37: Y
es), the process jumps to step S28, acquires PCGI, and starts reproduction (steps S28, S29). On the other hand, if it is determined in step S37 that the title is not included in the specified playback device (step S37: No), the system controller 100 notifies the CRT that the title cannot be played back by the playback device currently used. It is displayed above (step S38), and the process ends (step S39).

As described above, according to the second recording mode, the playback device limitation information corresponding to each VTS is collectively recorded in the video manager 2. Therefore, according to the second reproducing method, when the inserted DVD includes a title that restricts the reproducing device and a title that does not restrict the reproducing device, even if one title is selected by the user, the VTS 3 corresponding to the title is searched. Control data 1
It is possible to immediately know whether or not reproduction is possible without going to read 1, and it is possible to quickly respond to a user operation.

[0083]

As described above, according to the first aspect of the present invention, it is possible to prevent a commercial recording medium from being reproduced by a consumer reproducing apparatus without changing the standard of the disk structure or the like. It is possible to do.

According to the third aspect of the present invention, it is possible to prevent a commercial recording medium from being reproduced by a consumer reproduction device without changing a standard such as a disk structure. .

[Brief description of the drawings]

FIG. 1 is a diagram showing a recording format of a DVD according to an embodiment of the present invention.

FIG. 2 is a diagram showing a logical format of a DVD according to the embodiment of the present invention.

FIG. 3 is a diagram showing a first recording mode of title set information and the like.

FIG. 4 is a diagram illustrating a second recording mode of title set information and the like.

FIG. 5 is a block diagram illustrating a configuration of a DVD recording device according to an embodiment of the present invention.

FIG. 6 is a block diagram illustrating a configuration of a DVD playback device according to an embodiment of the present invention.

FIG. 7 is an operation flowchart of a first reproduction method according to the embodiment of the present invention.

FIG. 8 is an operation flowchart of a second reproduction method according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... DVD 2 ... Video manager 3, 63 ... VTS 10 ... VOB 11 ... Control data 20 ... Cell 30 ... VOB unit 41 ... Navipack 42 ... Video data 43 ... Audio data 44 ... Sub-picture data 60 ... Program 61, 61A 61B PGC 62 Title 70 VTR 71 Memory 72 Signal processing unit 73 Hard disk device 74 FD device 75 Controller 76 Multiplexer 77 Modulator 78 Mastering device 80 Pickup 81 Demodulation and correction unit 82 84 stream switch 83 track buffer 85 system buffer 86 demultiplexer 87 VBV buffer 88 video decoder 89 sub-picture buffer 90 sub-picture decoder 92 audio buffer 93 Audio decoder 94 PCI buffer 95 PCI decoder 96 Highlight buffer 97 Highlight decoder 98 Input unit 99 Display 100 System controller 101 Drive controller 102 Spindle motor 103 Slider motor S1 Recording device S2 Reproduction Apparatus DK: Optical disk ST: Cue sheet

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Yoshiaki Moriyama, 6-1-1-1 Fujimi, Tsurugashima-shi, Saitama Pioneer Corporation (72) Inventor Kaoru Yamamoto 6-1-1, Fujimi, Tsurugashima-shi, Saitama Inside the Pioneer Corporation Research Laboratory (72) Junichi Yoshio 4-2610 Hanazono, Tokorozawa-shi, Saitama F-term in the Tokorozawa Plant Pioneer Corporation 5C052 AA02 AB03 AB04 CC06 5C053 FA24 JA21 LA06 LA11 5D044 AB05 AB07 BC04 CC04 DE49 DE50 DE53 EF05 FG18 GK12 HH15 HL08 5D110 AA17 AA19 AA27 AA29 DA03 DA10 DA11 DB03 DC05 DC16 DE01

Claims (4)

[Claims] 1. A recording medium comprising: a recording information area for recording recording information; and a management information recording area for recording management information of the recording information, wherein the management information indicates a type of the recording information to be handled. A recording medium containing information. 2. The recording medium according to claim 1, wherein the type of the recording information is one of a consumer use and a business use. 3. A recording medium having a recording information area for recording recording information and a management information recording area for recording management information of the recording information, wherein the management information is handled in an apparatus for driving the recording medium. In a reproducing apparatus for a recording medium having information indicating the type of recording information, reading means for reading the recording information on the recording medium, extracting means for extracting information indicating the type of the recording information, and type of the recording information And a determination unit configured to determine whether to reproduce the recording medium based on the information indicating the reproduction medium. 4. The reproducing apparatus according to claim 3, wherein when said recording medium is set in said reproducing apparatus, said discriminating means first refers to said entire limited information piece.