JPH0917161A - Reproducing apparatus and reproducing method therefor - Google Patents

Abstract

PURPOSE: To restrict the reproduction of data such as images or the link from an optical disc by a parental control level given to the data and a rating level set on the reproduction side, and change the rating level through comparison of codes. CONSTITUTION: A parental control level given to an image of an optical disc to be restricted in reproduction is compared with a rating level set on the reproduction side (a system CPU part 50, a system ROM & RAM part 52 or the like), thereby to restrict the reproduction of the image. The rating level is changed through comparison of codes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus and a reproducing method for reproducing data from a recording medium such as an optical disk for recording data such as compressed moving image data and audio data having different purposes and types.

[0002]

2. Description of the Related Art In recent years, an optical disk reproducing apparatus for reproducing moving images, which reproduces an optical disk on which data such as video and audio data is digitally recorded, has been developed. In the future, a variety of reproduction software such as movies and karaoke will be provided. It is expected to be done. However, some of these programs are restricted by country, religion and age. For example, in the United States, some movies can be watched by anyone, that is, movies that can be watched by a child (G), movies that can be watched by a minor (PG) only when accompanied by a parent, and minors (PG13) who are 13 years or older only when accompanied by a parent. Movies you can watch)
Movies that adults (R) can watch, specific people (UNLIMI
It is divided into 5 stages such as movies that only TED can watch. In this way, it is called parental that the audience that can be viewed by the contents of the software is limited, or the audience that can be partially viewed by the video is limited. However, it was impossible to surely restrict the viewing because the viewing was restricted only by the viewer who owns the software.

Therefore, when reproducing the data recorded on the optical disk, there is a device which can restrict the reproduction by the parental control level given to the data and the restriction level set on the reproducing side. Is requested.

[0004]

As described above, when the data recorded on the recording medium is reproduced, the level of parental control given to the data and the limit level set on the reproducing side. There is a demand for a device whose playback can be restricted according to the above.When playing back the data recorded on the recording medium, the level of parental control given to the data and the level set on the playing side are set. It is an object of the present invention to provide a reproducing apparatus and a reproducing method capable of restricting reproduction by changing the restriction level, and changing the restriction level by password verification.

[0005]

The reproducing apparatus of the present invention comprises:
A management area is formed in a part of the area and a data area is formed in another area. At least one data is recorded in the data area. Whether or not the data in the data area is reproduced in the management area. In reproducing data from a recording medium in which a plurality of first restriction levels for selectively restricting data are recorded, the data in the data area of the recording medium and the first restriction level in the management area are read. Reading means, setting means for setting a plurality of second limit levels on the device side by password verification, first limit level read by the reading means and second limit level set by the setting means. By determining whether the reproduction of the data is prohibited or not, and when the determination means determines that the reproduction of the data is prohibited, the reading means It comprises a prohibition unit for prohibiting reproduction of the read data, and a conversion unit for converting the data read by the reading unit into a reproduction output when the judgment of the reproduction of the data is not judged by the judgment unit. It

According to the reproducing method of the present invention, a management area is formed in a part of the area and a data area is formed in the other area, at least one data is recorded in the data area, and the management area is set to the above area. In a reproducing device for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting whether or not to reproduce data in the data area are recorded, the data in the data area of the recording medium and the The first limit level of the management area is read, and the first read level is read.
It is determined whether or not the reproduction of the data is prohibited by comparing the restriction level of No. 1 with the second restriction level of a plurality of levels set in advance on the device side by secret code verification. When the prohibition of the reproduction is determined, the reproduction of the read data is prohibited, and when the prohibition of the reproduction of the data is not determined by the above determination, the read data is converted into the reproduction output. Is.

In the reproducing apparatus of the present invention, a management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the management area is formed of the above-mentioned data. In a case where data is reproduced from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction of data in the data area are recorded, the data in the data area of the recording medium and the management By the reading means for reading the first limit level of the area, the setting means for setting a plurality of second limit levels on the side of the device by password matching, the first limit level read by the reading means and the setting means. A determination unit that determines whether or not the reproduction of the data is prohibited by comparing the set second limit level, and the determination unit determines whether or not the reproduction of the data is prohibited. If the prohibition means for prohibiting the reproduction of the data read by the reading means is determined, and the prohibition of the reproduction of the data is not determined by the determination means, the data read by the reading means is reproduced. It is composed of a conversion means for converting into an output, and a changing means for changing the second restriction level set by the setting means by the secret code collation.

In the reproducing method of the present invention, a management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and In a reproducing device for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting whether or not to reproduce data in the data area are recorded, the data in the data area of the recording medium and the The first limit level of the management area is read, and the first read level is read.
It is determined whether or not the reproduction of the data is prohibited by comparing the restriction level of No. 1 and the second restriction level of multiple stages set on the device side by the password verification. When the prohibition is determined, the reproduction of the read data is prohibited. When the prohibition of the reproduction of the data is not determined by the determination, the read data is converted into the reproduction output, and the secret code is output. By collation, the second restriction level set above is changed.

In the reproducing apparatus according to the present invention, a management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the management area is formed of the data. In a case where data is reproduced from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction of data in the data area are recorded, the data in the data area of the recording medium and the management By the reading means for reading the first limit level of the area, the setting means for setting a plurality of second limit levels on the side of the device by password matching, the first limit level read by the reading means and the setting means. A determination unit that determines whether or not the reproduction of the data is prohibited by comparing the set second limit level, and the determination unit determines whether or not the reproduction of the data is prohibited. If the prohibition means for prohibiting the reproduction of the data read by the reading means is determined, and the prohibition of the reproduction of the data is not determined by the determination means, the data read by the reading means is reproduced. It is composed of a converting means for converting into an output and a changing means for changing the second limit level set by the setting means by inputting a specific number different from the secret code.

According to the reproducing method of the present invention, a management area is formed in a part of the area and a data area is formed in the other area, at least one data is recorded in the data area, and In a reproducing device for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting whether or not to reproduce data in the data area are recorded, the data in the data area of the recording medium and the The first limit level of the management area is read, and the first read level is read.
It is determined whether or not the reproduction of the data is prohibited by comparing the restriction level of No. 1 and the second restriction level of multiple stages set on the device side by the password verification. When the prohibition is determined, the reproduction of the read data is prohibited. When the prohibition of the reproduction of the data is not determined by the determination, the read data is converted into the reproduction output, and the secret code is output. The second limit level set above is changed by inputting a specific number different from.

In the reproducing apparatus of the present invention, a management area is formed in a part of the area and a data area is formed in the other area, at least one data is recorded in the data area, and the management area is set to the above area. In a case where data is reproduced from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction of data in the data area are recorded, the data in the data area of the recording medium and the management Reading means for reading the first limit level of the area, first setting means for setting the secret code, and when setting the secret code by the first setting means, a second limit level of a plurality of levels on the device side is set. By comparing the first limit level read by the second setting means and the second limit level set by the second setting means, reproduction of data is prohibited. First determining means for determining whether or not there is any, and if the first determining means determines that the reproduction of the data is prohibited, the prohibiting means for prohibiting the reproduction of the data read by the reading means; When the prohibition of data reproduction is not judged by the judgment means of No. 1,
Conversion means for converting the data read by the reading means into reproduction output, input means for inputting a secret code, and whether the secret code input by this input means matches the secret code set by the first setting means. Second determining means for determining whether or not, and changing means for changing the second restriction level set by the second setting means when the coincidence of the secret code is determined by the second determining means. Composed of.

According to the reproducing method of the present invention, a management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and In a reproducing device for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting whether or not to reproduce data in the data area are recorded, the data in the data area of the recording medium and the When the first restriction level of the management area is read and the secret code is set, a second restriction level of a plurality of levels on the device side is set, and the read first restriction level and the set first restriction level are set. It is determined whether the reproduction of the data is prohibited by comparing with the restriction level of 2. If the prohibition of the reproduction of the data is determined by this judgment, the reproduction of the read data is prohibited. , If it is not determined by the above determination that the reproduction of the data is prohibited, the read data is converted into the reproduction output, and it is determined whether the input secret code and the set secret code match. However, when the coincidence of the secret code is judged by this judgment, the above-mentioned set second restriction level is changed.

In the reproducing apparatus of the present invention, a management area is formed in a part of the area and a data area is formed in the other area, at least one data is recorded in the data area, and the management area is formed of the above-mentioned data. In a case where data is reproduced from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction of data in the data area are recorded, the data in the data area of the recording medium and the management Reading means for reading the first limit level of the area, first setting means for setting the secret code, and when setting the secret code by the first setting means, a second limit level of a plurality of levels on the device side is set. By comparing the first limit level read by the second setting means and the second limit level set by the second setting means, reproduction of data is prohibited. First determining means for determining whether or not there is any, and if the first determining means determines that the reproduction of the data is prohibited, the prohibiting means for prohibiting the reproduction of the data read by the reading means; When the prohibition of data reproduction is not judged by the judgment means of No. 1,
Conversion means for converting the data read by the reading means into reproduction output, input means for inputting a secret code, and whether the secret code input by this input means matches the secret code set by the first setting means. Second determining means for determining whether or not the first limiting means changes the second limit level set by the second setting means when the second determining means determines that the passwords match. It comprises a changing means and a second changing means for changing the second restriction level set by the second setting means by inputting a specific number different from the secret code.

In the reproducing method of the present invention, a management area is formed in a part of the area and a data area is formed in the other area, at least one data is recorded in the data area, and the management area is formed of the above-mentioned data. In a reproducing device for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting whether or not to reproduce data in the data area are recorded, the data in the data area of the recording medium and the When the first restriction level of the management area is read and the secret code is set, a second restriction level of a plurality of levels on the device side is set, and the read first restriction level and the set first restriction level are set. It is determined whether the reproduction of the data is prohibited by comparing with the restriction level of 2. If the prohibition of the reproduction of the data is determined by this judgment, the reproduction of the read data is prohibited. , If it is not determined by the above determination that the reproduction of the data is prohibited, the read data is converted into the reproduction output, and it is determined whether the input secret code and the set secret code match. However, when the coincidence of the secret code is determined by this determination, the second limit level set above is changed, and the second limit level set by the input of a specific number different from the secret code is set. To change.

[0015]

According to the present invention, a management area is formed in a part of the area and a data area is formed in the other area, at least one data is recorded in the data area, and the management area includes the data area of the data area. In reproducing data from a recording medium in which a plurality of first restriction levels for selectively restricting whether or not to reproduce data are recorded, in the data area of the recording medium and the first area of the management area, The first limit level read by the reading means and the first limit level read by the reading means are set by the setting means. It is determined whether or not the reproduction of the data is prohibited by comparing with the second restricted level that is set, and if the determination of the prohibition of the reproduction of the data is made by this determination, the reading is performed. Prohibit the reproduction of the data read by the step, by the above determination, if the prohibition of data reproduction is not determined, is obtained so as to convert the data read by said reading means to read output.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical disk reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block of an optical disc reproducing apparatus for reproducing data from an optical disc according to an embodiment of the present invention, and FIG. 2 shows a block of a disc drive section for driving the optical disc shown in FIG. 3 shows the structure of the optical disc shown in FIGS. 1 and 2, and FIG. 4 shows the recording configuration of the optical disc shown in FIGS. 1, 2 and 3.

On the optical disc 10 reproduced by the optical disc reproducing apparatus shown in FIG. 1, various data such as MPEG compressed moving images, audio, sub-pictures, etc.
The data is recorded in a data format corresponding to the second system layer. Here, the sub-picture is data obtained by performing run-length compression of text and simple animation data.

In the optical disk reproducing apparatus shown in FIG. 1, the user operates the key operation section and the display section 4 on the front panel of the main body, or the remote control 5 as a remote operation apparatus connected to the main body by optical communication by infrared rays. By doing so, recorded data, that is, video data, sub-video data, and audio data is reproduced from the optical disc 10, converted into an audio (audio) signal and a video signal in the device, and the monitor unit 6 and the speaker unit 8 outside the device.
Is reproduced as video and audio.

The key operation section, display section 4, and remote control 5 are used for reproduction, stop, fast-forward reproduction, rewind reproduction, presence / absence of subtitle (sub-picture) display, and parental control (whether or not to reproduce). It is used for the user to perform various instruction operations such as (restriction) cancellation, channel selection, and menu selection.

Here, the parental control is to limit the viewing of the image recorded on the optical disk 10 according to the country, religion and age. This parental control is performed at the sequence level, the cell level, the GOP, as will be described later.
Three levels corresponding to the corresponding levels are described in the optical disc 10 and processed.

The parental control set at each level of the optical disk 10 is set to five levels from level 1 to level 5 where the restrictions are gradually tightened. In the case of level 1,
Anyone can watch, that is, a level that can be watched by a child (G). In the case of level 2, a minor (P
G) is a level that can be viewed, level 3 is a level that a minor (PG13) aged 13 or older can watch only when accompanied by a parent, and level 4 is a level that an adult (R) can watch. , Level 5, a specific person (UNL
It is a level that only IMITED) can watch.

Further, as shown in FIG. 5, the rating level as the restriction level for restricting the reproduction set on the optical disk reproducing apparatus side is level 1 of the parental control as described above.
~ 5 levels are prepared corresponding to level 5, a level that can be watched by a child (G), a minor (P
G), the level that can be viewed by minors (PG13) who are 13 years or older only when accompanied by a parent, the level that an adult (R) can view, and the level that only a specific person (UNLIMITED) can watch. .

The rating level is set by the user, and can be set by password verification so that other values cannot be easily changed. Further, in consideration of the case where the user forgets the personal identification number, the personal identification number can be reset and the rating level can be changed even when a specific personal identification number, for example, "0000" is input. . The specific personal identification number may be another number.

A rating level set on the optical disc reproducing apparatus side and a sequence (cell, GO) which can be viewed and listened to.
The relationship between P) and the parental control level will be described. That is, as shown in FIG. 6, when the rating level is a level that can be viewed by a child (G), the level 1 parental control sequence can be reproduced, and the minor (PG ) Is a level at which the parental control sequence of levels 1 and 2 can be reproduced, and a rating level is a level at which a minor (PG13) aged 13 or over can watch the level only if accompanied by a parent. The parental control sequence of 1, 2, 3 can be played back, and when the rating level is a level that can be viewed by an adult (R), the parental control sequence of level 1, 2, 3, 4 can be played back. Who have a certain rating level (UNL
If the level is only available for viewing, the parental control sequence of levels 1, 2, 3, 4, 5 can be reproduced.

The optical disk reproducing apparatus is a system for reproducing characters such as MPEG-compressed moving images, audio and subtitles, and sub-picture data used for simple animation from the optical disk 10 according to the MPEG system layer.

Characters and simple animations are run-length compressed and will be referred to as sub-pictures hereinafter.

As shown in FIG. 7, the key operation section and the display section 4 include a power key 4a, a microphone input terminal 4b, a play key 4c, a pause key 4d, a stop key 4e, a fast forward / return key 4f, and an optical disk 10. It is composed of an open / close key 4g for instructing the loading / unloading of the disk, a display 4h, an insertion of the optical disk 10, an exit 4i, and the like.

As shown in FIG. 8, the remote control 5 includes a power key 5a, a numeric keypad 5b, and a stop key 5.
c, play key 5d, pause key 5e, memory key 5
f, open / close key 5g, fast forward / return key 5h, 5 for instructing loading / unloading of the optical disk 10
i, repeat key and repeat key 5 to specify range
j, a clear key 5k, a set key 51, and an up / down key 5m used for selecting an item when the menu screen is displayed.

As already known, the optical disc 10 has various structures. As shown in FIG. 3, for example, a structure 18 in which a recording layer, that is, a light reflecting layer 16 is formed on a transparent substrate 14 is provided. A high recording density type in which a pair of structural bodies 18 are prepared and bonded together with an adhesive layer 20 so that the recording layer 16 is enclosed therein has appeared. In the optical disc 10 having such a structure, a center hole 22 into which the spindle of the spindle motor 12 is inserted is provided at the center, and a clamping area for holding the optical disc 10 at the time of rotation is provided around the center hole 22. 24 are provided.

An area from the clamping area 24 to the outer peripheral edge of the optical disk 10 is defined as an information recording area 25 in which information can be recorded on the optical disk 10. FIG.
In the optical disc shown in FIG. 4, information recording areas 2 are provided on both sides of the optical disc.
5 will be obtained. Each information recording area 25 has a lead-out area 2 in which the outer peripheral area is not normally recorded with information.
Similarly, the inner peripheral area adjacent to the clamping area 24 is similarly defined as a lead-in area 27 in which information is not normally recorded. Further, a data recording area between the lead-out area 26 and the lead-in area 27 is defined. The area 28 is defined. In the recording layer 16 of the information recording area 25, normally, tracks are continuously formed in a spiral shape as an area in which data is recorded, and the continuous tracks have a plurality of fixed storage capacities as shown in FIG. Is divided into logical sectors (minimum recording unit), and data is recorded based on this logical sector. The recording capacity of one logical sector and the data length of one pack described later are set to the same 2048 bytes. Data recording area 2 of information recording area 25
Reference numeral 8 denotes an actual data recording area, in which management data, main image (main image) data, sub-image (sub-image) data, and audio (audio) data are also in a physical state such as pits, as will be described later. Recorded as a change. In the read-only optical disk 10, a pit row is formed on the transparent substrate 14 by a stamper in advance, and a reflective layer is formed by vapor deposition on the surface of the transparent substrate 14 where the pit row is formed, and the reflective layer is formed as the recording layer 14. Will be done. Further, in the read-only optical disc 10, usually, no groove is provided as a track, and a pit row is defined as a track.

In the optical disc reproducing apparatus for reproducing data from such an optical disc 10, the optical disc 10
The optical disc drive unit 30 that drives the optical disc 1
0 is searched for in the light beam. That is, as shown in FIG.
The optical disc 10 is placed on a spindle motor 12 driven by a motor drive circuit 11, and is rotated by the spindle motor 12. Optical disk 10
An optical head, that is, an optical pickup 32 for condensing a light beam, that is, a laser beam on the optical disc 10 is provided below the optical disc 10. The optical head 32 is mounted on a guide mechanism (not shown) so as to be movable in the radial direction of the optical disk 10 in order to search the information recording area 25, particularly the data recording area 28, and a drive signal from a drive circuit 37. It is moved in the radial direction of the optical disk 10 by a feed motor 33 driven by. The objective lens 34 is held on the optical disc 10 so as to be movable along its optical axis.
In response to the drive signal from the focus drive circuit 36, the focus lens is moved in the optical axis direction, the objective lens 34 is always maintained in the focus state, and a minute beam spot is formed on the recording layer 16. The objective lens 34 is held so as to be finely movable in the radial direction of the optical disk 10, is finely moved in response to a drive signal from a track drive circuit 38, is always maintained in a tracking state, and is kept in a tracking state. The upper track is tracked with a light beam.

In the optical head 32, the light beam reflected from the optical disk 10 is detected, and the detected detection signal is supplied from the optical head 32 to the servo processing circuit 44 via the head amplifier 40. The servo processing circuit 44 generates a focus signal, a tracking signal, and a motor control signal from the detection signal, and supplies these signals to the drive circuits 36, 38, and 11, respectively. Accordingly, the objective lens 34 is maintained in the focus state and the tracking state, the spindle motor 12 is rotated at a predetermined number of revolutions, and the track on the recording layer 16 is a light beam by the light beam. Tracked at. System CP
When a control signal as an access signal is supplied from the U section 50 to the servo processing circuit 44, a movement signal is supplied from the servo processing circuit 44 to the drive circuit 37, and the optical head 32 is moved in the radial direction of the optical disk 10. A predetermined sector of the recording layer 16 is accessed, and the reproduced data is amplified by the head amplifier 40 and output from the disk drive unit 30. The output reproduction data is stored in the data RAM section 56 via the system CPU section 50 and the system processor section 54 which are controlled by the program recorded in the system ROM and RAM section 52. The stored reproduction data is processed by the system processor 54 and classified into video data, audio data, and sub-picture data. The video data, audio data, and sub-picture data are respectively processed by the video decoder 58 and the audio decoder 60. And output to the sub-picture decoder 62 for decoding. The decoded video data, audio data, and sub-picture data are D / A and reproduction processing circuit 64.
Are converted into analog video signals, audio signals, and sub-picture signals and mixed, and the video signals and sub-picture signals are supplied to the monitor section 6, and the audio signals are supplied to the speaker section 8. As a result, the video is displayed on the monitor unit 6 and the sound is reproduced from the speaker unit 8. ROM and R for the above system
A program (software) for controlling the operation of this apparatus is stored in the ROM of the AM section 52, and is read and executed by the system CPU section 50 when the power is turned on. In addition, character data for displaying on-screen that the parental processing is in progress is also stored in this ROM. In addition, the parental limit level (5
One of the stages) is set in advance as a reference level, which is a reference limit level of this optical disk reproducing apparatus, and can be, for example, a parental limit for each country. The reference limit level in the ROM may be changed at the time of manufacture by using a dip switch or the like. As a result, it is possible to automatically limit parental restrictions by country. Since the reference level is not changed by the user through the key operation unit and the display unit 4 or the remote control 5, it is possible to automatically automatically restrict the video and audio restricted in the country. Thereby, the rating level can be set within a level gentler than the reference level. For example, when the reference level is PG13, PG13, PG, and G can be set as the rating level. The system ROM and the RAM of the RAM section 52 are provided with a work area for data processing.

Detailed operation of the optical disk device shown in FIG. 1 will be described later in detail together with the logical format of the optical disk 10 described next.

The data recording area 28 from the lead-in area 27 to the lead-out area 26 of the optical disk 10 shown in FIG. 2 is ISO966 as a logical format.
It has a volume structure based on 0 as shown in FIG. This volume structure includes a volume management information area 70 and a file area 80 having a hierarchical structure. The volume management information area 70 contains the ISO966
Logical block numbers 0 to 23 defined based on 0 correspond to the system area 72 and the volume management area 74. The system area 72 is not usually defined as an empty area, but is provided for an editor who edits data to be recorded on the optical disk 10, for example, and realizes driving of the optical disk device according to the intention of the editor. A system program for this purpose is stored as needed. In the volume management area 74, volume management information for managing a file 78 such as a disk information file 76 (hereinafter simply referred to as a disk information file 76) in a file area 80, a movie file or a music file, The file recording position, recording capacity, file name, and the like are stored. In the file area 80, files 76 and 78 having file numbers 0 to 99 specified by logical block numbers after the logical block number 24 are arranged, and the file 76 having file number 0 is allocated as the disk information file 76. , File number 1 to file number 99
The files 78 up to are allocated as movie files, that is, video files or music files.

As shown in FIG. 10, the disc information file 76 is composed of a file management information area 82 and a menu video data area 84. In the file management information area 82, selectable information recorded on the entire optical disc 10 can be selected. File sequence information, that is, file management information for selecting a video or audio title is described. Also, in the menu video data area 84,
Image data of a menu screen for displaying a selection menu such as a title is stored as a cell-based menu data cell 90. That is, the menu video data in the menu video data area 84 is divided into units of a necessary size according to the purpose, as will be described in detail later, and is recorded in the menu video data area 84 of the optical disc 10 in the recording order # 1.
Are defined as i menu cells 90 sequentially numbered from. The menu cell 90 stores video data, sub-video data, or audio data related to movie or audio title selection, program selection of each title, and the like.

As shown in FIG. 10, the file management information area 82 stores disc configuration information (DSINF: disc search information) which is information on the configuration content of each movie file or music file recorded on the optical disc 10. Disk configuration information area 86, menu configuration information area 87 for storing menu configuration information (MSINF: menu structure information), menu cell information (MCI:
There are three types of information areas of a menu cell information table (MCIT: menu cell information table) 88 for storing menu cell information), which are arranged in this order.

The disc configuration information (DSINF) in the disc configuration information area 86 is information on the configuration content of each movie file or music file recorded on the disc, and as shown in FIG. 11, FFNAME.
(File name), FFID (file identifier), DSI
NF (the number of files), FSINF (the number of file type / title selection target sequences), FCINF (the sub-picture / audio information in the file), and TSINF (each title information).

FFNAME is for identifying the file name, and the same content as the corresponding file identifier in the directory record is described.

The FFID describes a file identifier as information for identifying the disc information file.

DSINF describes the number of movie files or music files (the number of reproduction files 78) existing on the optical disc 10.

FSINF describes the file type (movie file, music file) of each file and the number of complete sequences and connection-type head sequences existing in the file.

FCINF is FNAST (the number of audio streams), FNSPCH (the number of sub-picture channels), F
ACODE (audio stream type), FSPCO
It is composed of DE (sub-video channel type).

The FNAST describes the number of audio streams existing in the file.

The FNSPCH describes the number of sub-picture channels existing in the file.

In FACODE, the language code (English, Japanese, etc.) of the audio stream is continuously described in the order of the audio stream numbers. When the audio stream type is other than language, FFh is described.

In the FSPCODE, the language code (English, German, etc.) of the sub-picture channel is continuously described in the order of the channel numbers, and FFh is described when the sub-picture type is other than the sub-picture type.

In TSINF, the parental control of each title, the number of angles, and the number of programs are described in order from the title number # 1.

The number of titles is the sum of the complete sequence and the connection-type head sequence existing in each movie file or music file.

For the title number, the sequence of the file number # 1 is used as the title # 1, the sequence numbers in the file number # 1 continue in ascending order, and the file # 2 sequence # 1 is created after the end of the final sequence for title selection. Continue.

The parental control describes the parental level of the sequence.

The number of angles describes the number of angle cells of the angle blocks included in the sequence. If there is no angle block, 0 is described.

The number of programs describes the number of programs in the sequence.

The menu structure information (MSINF) in the menu structure information area 87 is position information of image data for the menu recorded in the file.
As shown in 2, MOMCEL (number of menu cells), T
MSCEL (Title menu start cell number), ADM
SCEL (audio menu start cell number), SPM
SCEL (Sub-picture menu start cell number), PEMSC
EL (program menu start cell number), AGMSC
It is composed of EL (angle menu start cell number) parameters.

In MOMCEL, the number of menu cells recorded in this file is described. If there is no menu video data in this file, 00h is described.

The start cell number of the title menu cell is described in TMSCEL. If there is no title menu cell, 00h is described.

The starting cell number of the audio menu is described in ADMSCEL. If there is no audio menu cell with the corresponding file number, 00h is described.

The start cell number of the sub-picture menu is described in SPMSCEL. When the sub-picture menu cell of the corresponding file number does not exist, 00h is described.

In PEMSCEL, the starting cell number of the program menu is described. If there is no program menu cell with the corresponding title number, 00h is described.

The starting cell number of the angle menu is described in AGMSCEL. If there is no angle menu cell, 00h is described.

Menu cell information table (MCIT) 8
Reference numeral 8 denotes a table in which menu cell information (MCI) such as a position, a size, and a reproduction time necessary for reproducing each menu cell 90 is continuously described. The menu cell information table (MCIT) 88 is defined by a set of i menu cell information areas 89 in which menu cell information (MCI) is described in the order of menu cell numbers. Each menu cell information (MC
I) is, as shown in FIG. 13, MCCAT (menu cell type), MCSSCR (menu cell start pack),
MCSLBN (Menu cell start logical block number),
It is composed of each parameter of MCNLB (the number of constituent logical blocks).

In MCCAT (menu cell type), copy control information indicating whether copying is permitted or prohibited, parental control information indicating all parental levels of video data forming the menu cell, title menu, and program menu. , Audio menu, sub-picture menu,
The menu cell type information indicating whether it is an angle menu and the language code of the menu cell are described.

As the language code, the code number of the language code table is described.

The MCSSCR describes the upper 32 bits of the SCR (system clock reference, system time reference value) described in the start pack of the menu cell.

MCSLBN describes the offset logical block number from the beginning of the file which is the start address of the menu cell.

In MCNLB, the number of logical blocks forming the menu cell is described.

Here, the disk configuration information (DSINF)
The menu configuration information (MSINF) is continuously described in the file management information area 82, and the menu cell information table (MCIT) 88 is aligned with the boundaries of logical blocks.

FIG. 14 shows the disk configuration information (DSIN
The specific example of F) is shown. In this example, the file name "NEWMOVIE.MOV;1", the disc information file identifier "SDIF0000", the number of files = 1 (01H), the file type = video (00H), the number of sequences = 2 (02H), the number of audio streams = 3 (03H), number of sub-picture channels = 2 (02H), audio stream # 1 = English (10H), # 2 = French (12H), # 3 = German (13
H), sub-picture channel # 1 = English (10H), # 2 = Japanese (1DH), parental control of title # 1 = 3,
Number of angles of title # 1 = 2 (02H), title #
1 program number = 3 (03H), title # 2 parental control = 5, title # 2 angle number = 0 (00
H) and the number of programs of title # 2 = 5 (05H).

Further, music data or movie data of one or a plurality of titles are stored in movie files and music files 78 corresponding to file numbers 1 to 99. This file 78
Are the specification information for the data contained in the file 78, that is, the management information (for example,
Video data in which a file management information area 101 in which address information and reproduction control information are described and video data in the file 78 (video, audio, sub-video data, etc. are simply referred to as video data) is described. The file structure has an area 102. In the video data area 102, video data is divided into cells in the same manner as the menu cell 90 of the disc information file 76, and the video data is arranged as j video data cells 105.

Usually, movie data or audio data of a title is represented as a set of continuous sequences 106. For example, a movie story
It is represented by a continuous sequence 106 corresponding to “ki”, “sho”, “to” and “katsu”. Therefore, the video data area 102 of each file 78 is defined as a set of sequences 106 as shown in FIG. Each sequence 106 is represented by a plurality of video programs (chapter) 107 corresponding to various scenes, and each video program 105 is composed of a plurality of video data cells 105. Each video cell 105 is shown in FIG.
7, a disc search information (DSI) pack 92, a main video pack 93, a sub video pack 95, and an audio pack 98 are combined into one image group (GO).
P: Group of Picture) is arranged in a plurality of groups. The configuration of this video cell 105 is substantially the same as that of the menu cell 90, and the video data 102
In, data such as a moving picture (movie), audio (audio), and sub-picture compressed according to a compression standard such as the MPEG standard (Moving Picture Expert Group) is recorded in a data format compatible with the system layer of MPEG2. That is, the video data 102 is a program streamer defined by the MPEG standard. Further, each pack 92, 93, 95, 98 has a pack structure including a pack header 97 and a packet 99 corresponding to the pack.

The main video pack in the moving picture is MPE.
It is composed of I-pictures, P-pictures, and B-pictures according to the G standard. A sub-picture unit is composed of a plurality of sub-picture packs, one still picture is obtained by this sub-picture unit, and at least one sub-picture unit can be formed in one cell. .

The file management information area 101 is a file management table (FMT) 1.
13. Sequence information table (SIT: Sequence In)
formation table) 114, cell information table (CI
T: Cell Information Table) 115 and the like.

The video data cells in the video data area 102 are sequentially numbered from # 1 in the order of recording on the optical disc 10, and the cell information table and the cell information in association with this cell number. 115
It is described in. That is, the cell information table 115 is defined as a set of areas 117 in which j pieces of cell information (CI) in which information necessary for reproducing video data cells is described in the order of cell numbers are stored. ) Has
Information such as the position, size, and reproduction time of the cell in the file 78 is described.

FIG. 18 shows the cell information table 115.
2 shows the contents of the cell information (CI) stored in.
Cell information (CI) described in this cell information area 117
The parameter describes the contents such as the start position and size of the video cell obtained by dividing the video data in units according to the purpose. That is, the cell information (CI) is cell type information (CCA) indicating the content of the video cell such as whether the video cell is a movie, karaoke, or an interactive menu.
T), cell reproduction information (CTIME) indicating the total reproduction time of the video cell, and S described in the start pack of the cell.
Describe the upper 32 bits of CR (system time reference value) (CSSCR), start position of video cell, that is, cell start position information (CSLBN) indicating start address (offset logical block number from file start) and video cell Cell size information (CNLB) indicating the size (the number of logical blocks) configuring

The cell type information (CCAT) is copy control information indicating whether copying is permitted or prohibited, parental control information indicating a parental level of video data forming a cell,
It is composed of cell type information indicating whether the video cell is a movie, karaoke, or interactive menu, and a language code when the cell type information is an interactive menu.

The sequence information table 114 has i pieces of sequence information (S) which describe the order of selecting and reproducing the cells 105 within the range specified for each sequence 106.
A set of areas 116 in which I) is stored is defined. In each sequence information (SI), the reproduction order and the reproduction control information on the reproduction of the video cells 105 recorded in the sequence 106 are described. This sequence 1
06 is a complete type sequence completed in one sequence,
There is a connection-type sequence that is branched and connected to the next sequence for each sequence. The connection-type sequence is a head sequence of video data corresponding to a multi-story, and is branched from this sequence and connected to the next sequence. Connection-type head sequence that can be connected, that is, a connection-type head sequence in which the story changes in the manner of selection, a connection-type intermediate sequence that is branched from another connection-type sequence and connected to another sequence, and the like. There is a connection-type termination sequence that is connected from the connection-type sequence and ends the sequence, that is, a connection-type termination sequence in which the story ends in this sequence. The sequence information numbers are defined as sequence numbers 1 to i, and the respective start position information is written in the file management information table 113.

FIG. 19 shows a sequence information table 114 in the file management information area 101 shown in FIG.
2 shows the contents of one sequence information (SI) stored in the. As shown in FIG. 19, in the sequence information area 116, the reproduction order of video cells, sequence information, and the like are described. The sequence information (SI) number is
Sequence information table 1 that matches the sequence number
14 are assigned in the order of their numbers. Sequence number 1 is a default reproduction sequence, and it is considered that the arrangement of cells constituting the sequence is desirably continuous in the specified order. This sequence information 116 is
Sequence type information (SCAT), number of constituent programs (SNPRG), number of constituent cells (SNCEL), sequence reproduction time (STIME), number information of connected sequences (S
NCSQ), sequence number list information (SCSQN)
And sequence control information (SCINF).

The sequence type information (SCAT) includes copy control information indicating whether copying is permitted or prohibited, parental control information indicating the parental level of the sequence, which is the maximum parental level of the cells included in the sequence,
A complete sequence that ends after playing one sequence, a start sequence of video data corresponding to a multi-story that can be branched from this sequence and connected to the next sequence, and other connections Connection type intermediate sequence branched from the type sequence and connected to another sequence, and sequence type information indicating which is a connection type end sequence connected from another connection type sequence and ending the sequence, Sequence usage information indicating which of movie, karaoke, and interactive menu is described. The number of programs constituting a sequence is described in the number of constituent programs (SNPRG). The number of cells constituting a sequence is described in the number of constituent cells (SNCEL).

In the sequence reproduction time (STIME),
The total playback time of the sequence is described, the number of connectable sequences (SNCSQ) describes the number of sequences that can be connected to the sequence in the connection-type sequence, and the sequence number list information (SCSQN). , Connection sequence number information (SN
The sequence numbers of the connection destinations corresponding to the number described in CSQ) are described as a list, and the sequence control information (SCINF) describes the reproduction order of the cells constituting the sequence. It is played back and the sequence is executed. A section in which one cell is selected from a plurality of cells and reproduced is described by a block as a set of cells, and by specifying the block, a sequence of the block is executed. In addition, the sequence defines a program as a reproduction unit in which one or more cells whose reproduction order is continuous are combined, and its number is described. The program numbers in the sequence are assigned in ascending order from # 1.

The file management table 113 shows the specification information regarding the video file 78. In this file management table 113, the file name and a file identifier for identifying whether or not the file can be played back by the optical disk playback device loaded with the optical disk are described. Further, in the file management table 113, the start addresses of the sequence information table 114 and the cell information table 115, the numbers of the sequence information 116 and the cell information 117 described in the respective tables, and the relative distance from the beginning of the file 78. As the start address of the sequence information table 114, the start address of each sequence information 116 indicated by the relative distance from the beginning of the sequence information table 114, the start address of the video data 102, and the information for reproducing each data. The data attributes and the like are described.

The file management table (FMT) 113 is made up of areas in which a plurality of parameters are recorded, and each area has a file name (FFNAM) as shown in FIG.
E), the file identifier (FFID) as information for identifying a movie file, and the size (FS) of the file management table (FMT) described by the number of logical blocks.
ZFMT), total number of sequences present in this file (FNSQ), number of cells present in this file (FN
CEL), the number of disc search information (DSI) packs (FNDSI) existing in the video data of this file
P), the number of logical blocks (FNLB) corresponding to the size of this file, the start address (FSASSIT) of the sequence information table 114 in this file indicated by the offset logical block number from the beginning of the file, the offset logical block from the beginning of the file Start address (FSACIT) of the cell information table 115 in this file indicated by a number, offset logical block from the beginning of the file Disk search map start address (FSADSM) in this file indicated by a number, offset logical block from the beginning of the file Video data start address (FSADVD) in this file indicated by number,
The start address (sequence information table 11) of each sequence information in the sequence information table 114 of this file in which the sequence is described in the order of description of the sequence information.
4 offset byte number from the beginning), size (FSAESI), and sequence information are described in the order of sequence information. The minimum number of cells used in each sequence existing in this file and between the minimum number and the maximum number are used. Number of cells (FSNCIB), video data attribute (FVATR) indicating the reproduction mode of video data recorded in this file, audio data recorded in this file that can be reproduced in the same time zone as this video data Number of audio streams (FNAST) indicating the number of streams (data strings), individual audio stream attributes (FAATR) corresponding to the recording order corresponding to the number of streams, and reproduction in the same time zone as the above video data. Of the sub-picture data recorded in this file is possible Number of sub-picture channels indicating the number of channels (FNSPCH), individual sub-picture channel attributes (FSPATR) in which the channel numbers and the recording order correspond to the number of channels, and sub-channels used for all the video data of the file Video color palette (FS
Parameters such as PPLT), a vendor definition (FVDEF) that defines an area that a vendor can use freely for a specific purpose, and the like are recorded.

In FIG. 20, when the number of audio streams is n, the audio data attribute that follows is # 1.
＃# n are continuously recorded in the order of stream numbers.

Further, similarly to the above, the number of sub-picture channels is m.
In this case, the subsequent sub-video data attributes are continuously recorded in the order of channel numbers from # 1 to #m.

If the number of audio streams or the number of sub-picture channels is zero (0), the audio data attribute or the sub-picture data attribute is not recorded.

As shown in FIGS. 15 to 17 and 21, the above-mentioned video data includes main video (video) data, audio data, sub-video data, and disk search information (DS).
I) A collection of data, each recorded in pack units.

As shown in FIGS. 22 to 25, the pack is composed of a packet composed of a pack header and any one of main video data, sub video data and disc search information (DSI).

The pack length of the pack is adjusted to be 2048 bytes (1 logical sector).

The pack header is a 4-byte pack start code (000001BAh) and a 6-byte SCR.
(System clock reference, system time reference reference value), 3-byte multiplexing rate (MUX rate; 04)
68A8h) composed of 1 byte to 7 bytes of stuffing byte (00h). The packet is composed of 2034 bytes as a standard, and a padding packet for pack length adjustment (replenishment data 00h which does not make sense as data is recorded in each byte unit) is provided in this packet as needed. It is designed to be used.

Each of the packs is a disc search information (DSI) pack 92 made up of disc search information data.
The main video pack 93 includes main video data, the sub video pack 95 includes sub video data, and the audio pack 98.

Next, each pack will be described in detail.

The disc search information pack 92 is shown in FIG.
As shown in, it is placed immediately before the main video pack containing the data at the beginning of one GOP, and has a 14-byte pack header, a 24-byte system header, a 6-byte packet header, and up to 2004 bytes. DS consisting of a data area that can store disc search information data
One pack is composed of I packets.

As described above, the pack header includes a 4-byte pack start code (000001BAh) and 6 bytes.
Byte SCR (system clock reference, system time reference reference value), 3-byte multiplex rate (MU
X rate: 0468A8h) 1 to 7 bytes of stuffing byte (00h).

The system header is composed of a 4-byte system header start code (000001BBh), a 2-byte header length and the like.

The packet header consists of a 3-byte packet start code (000001h), a 1-byte stream ID, and a 2-byte PES (Packetized Elementary Std).
reme) It is composed of the packet length.

The main video pack 93 is shown in FIG.
As shown in (b), a 14-byte pack header and 9
A main video packet that consists of a byte packet header and a data area that can store up to 2025 bytes of main video data, or a main video packet that contains a 19-byte packet header and a data area that can store up to 2015 bytes of main video data. One pack is configured. The pack header has the same structure as that of the DSI pack 92.

When the packet header is 9 bytes, a 3-byte packet start code (000001h), 1
Byte stream ID, 2-byte PES (Packetiz
ed Elementary Streme) PES with packet length of 3 bytes
It is composed of data related to.

When the packet header is 19 bytes, in addition to the above 9 bytes, a 5-byte PTS (Presentation T
ime Stamp: Playback output time management information) and 5-byte D
A TS (Decoding Time Stamp) is additionally configured. This PTS and DTS are G
It is described only in the main video packet including the data of the beginning of the I picture of OP.

The audio pack 98 is shown in FIG.
As shown in (b), a 14-byte pack header and 1
An audio packet consisting of a 4-byte packet header and a data area that can store up to 2020 bytes of audio data (when the audio data is AC3), or a 14-byte packet header, a 1-byte substream ID, and up to 2019 bytes of audio. One pack is composed of audio packets (when the audio data is linear PCM) formed of a data area in which data can be stored. The pack header is the above DSI
The structure is the same as that of the pack 92.

The packet header consists of a 3-byte packet start code (000001h), a 1-byte stream ID, and a 2-byte PES (Packetized Elementary Std).
reme) Packet length, PES content of 3 bytes, and PTS (Presentation Time Stamp; time management information of reproduction output) of 5 bytes.

A code indicating a linear PCM stream is added to the substream ID added when the audio data is linear PCM.

The sub-picture pack 95 is shown in FIG.
As shown in (b), a 14-byte pack header and 9
Byte packet header and 1-byte substream I
D and a sub-picture packet consisting of a data area that can store up to 2024 bytes of sub-picture data, or a data area that can store a 14-byte packet header, a 1-byte sub-stream ID, and sub-picture data of up to 2019 bytes. The sub-picture packet constitutes one pack. The pack header has the same structure as that of the DSI pack 92.

A code indicating a sub-picture stream is added to the sub-stream ID.

When the packet header is 9 bytes, a 3-byte packet start code (000001h), 1
Byte stream ID, 2-byte PES (Packetiz
ed Elementary Streme) PES with packet length of 3 bytes
It is composed of data related to.

When the packet header is 14 bytes, in addition to the above 9 bytes, a PTS (Presentation T
ime Stamp (time management information of reproduction output) is additionally configured. This PTS is described only in the sub-picture packet including the head data of each sub-picture unit.

In the SCR described in each pack, the value of the first pack of the video data after each file is set to 0,
The number of recordings on the optical disk 10 increases in ascending order.

The disc search information (DSI) described in the DSI pack 92 is set at the head of one GOP, and as shown in FIG. 26, general information, reproduction synchronization information, and DSI pack address information. , Angle address information, effect information, and highlight information.

The general information is, as shown in FIG. 27, the DSC.
It is composed of R, VSPTS, DLBN, CELN, and PCTL parameters. DSCR is S of DSI
CR (system clock reference, system time reference value), VSPTS is a reproduction time stamp of GOP, DLBN is a logical block number of DSI, CELN is a cell number, and PCTL is
This is the level of parental control. For DSI SCR,
The SCR described in the pack header is described. GOP
In the reproduction time stamp of, the reproduction disclosure time of the code display head frame of this GOP is described. In the DSI logical block number, the address of this DSI pack is described as an offset logical block number from the head of the file. The cell number describes the cell number to which this GOP belongs. The parental control level describes the parental control level (for example, 5 levels) during the GOP reproduction period. This parental level matches the cell to which it belongs.

The reproduction synchronization information includes reproduction start time and position information of GOP, audio data reproduced in synchronization with video data, and reproduction start time and position information of sub-picture data.

The reproduction synchronization information is the PTS and I of the I picture.
Address of pack containing picture, audio PT
S, audio pack address, sub-picture PTS, sub-picture pack address. In the PTS of the I picture, the reproduction start time of the I picture is described by the offset PTS from the reproduction time stamp of the GOP. In the address of the pack including the I picture, the address of the video pack including the I picture is described by an offset logical block number from the DSI pack. The audio PTS is the PTS of the audio packet having the closest reproduction start time after the I picture reproduction start time.
Is the offset PT from the GOP playback time stamp
It is described by S. In the audio pack address, the address of the audio pack targeted by the audio PTS is described by the offset PTS from this DSI pack. In the PTS of the sub-picture, the reproduction start time and end time of the sub-picture pack reproduced during the GOP reproduction period are GOP.
It is described by the offset PTS from the reproduction time stamp of. In the pack address of the sub-picture, the address of the sub-picture pack that is the target of the PTS of the sub-picture is described by the offset logical block number from this DSI pack.

The DSI pack address information is used for other DSI.
This is position information of the pack 92.

The angle address information is position information of another angle.

In the effect information, various effect processes that occur during the GOP reproduction period are described.

The highlight information is the position of the selected item on the menu screen, the changed color, and the changed contrast information, and this information is effective only when the cell to which it belongs is a menu cell or an interactive menu cell.

The highlight information is composed of the selection item start number / number of items, the position of the selection item, the color, and the contrast. In the selection item start number / number of items, the start number and the number of selection items of the selection items displayed in the sub-picture on the menu screen are described. For the position, color, and contrast of the selection items,
The display rectangular area of the corresponding selection item on the menu screen and the color and contrast information to be changed when selected are described by the number of selection items in order from the start selection number. The display rectangular area is defined by XY coordinates with the origin at the upper left of the video display.

The system processor section 54 has a packet transfer processing section 200 for judging the packet type and transferring the data in the packet to each decoder. As shown in FIG. 28, the packet transfer processing unit 200 includes a memory interface unit (memory I / F unit) 2
1, a stuffing length detection unit 202, a pack header end address calculation unit 203, a pack type determination unit 204, a packet data transfer control unit 205, and a decoder interface unit (decoder I / F unit) 206.

The memory I / F unit 201 uses the data bus to store the pack data from the data RAM unit 56 through the stuffing length detection unit 202, the pack type determination unit 204, the packet data transfer control unit 205, and the decoder I / F unit 2.
The data is output to 06.

The stuffing length detection unit 202 detects how many bytes the stuffing length is in the pack header in the pack data supplied from the memory I / F unit 201, and the detection result is the end of the pack header. It is output to the address calculation unit 203.

Pack header end address calculation unit 203
Calculates the pack header end address based on the stuffing length supplied from the stuffing length detection unit 202. The calculation result is calculated based on the stuffing length.
4 and the packet data transfer control unit 205.

The pack type discriminating unit 204 is supplied next to the address in the pack data supplied from the memory I / F unit 201a according to the pack header end address supplied from the pack header end address calculating unit 203. Depending on the contents of the 4-byte data, the main video pack,
It is for determining whether the pack is an audio pack, sub-picture pack, or DSI pack, and the result of this judgment is output to the packet data transfer control unit 205.

That is, when a 4-byte system header start code is supplied, it is determined to be a DSI pack,
A three-byte packet start code and a stream ID indicating a one-byte main video stream determine a main video pack, and a three-byte packet start code and a one-byte stream ID determine an audio pack.
A sub-picture pack is determined based on a byte packet start code and a 1-byte stream ID. However, if the stream ID is a private stream, the substream ID that follows the packet header
Is used to discriminate between an audio pack and a sub-picture pack.

The packet data transfer control unit 205 determines the transfer destination and the packet start according to the pack header end address supplied from the pack header end address calculation unit 203 and the pack type determination result supplied from the pack type determination unit 204. The address is determined, and further the packet length in the packet header of the supplied pack data is determined. Further, the packet data transfer control unit 205
Supplies a signal indicating the transfer destination as a transfer control signal to the decoder I / F unit 206, and changes the packet end address from the packet start address to the memory I / F unit 20.
1 is supplied.

The decoder I / F unit 206 is controlled by the packet data transfer control unit 205 from the memory I / F unit 201 according to the transfer control signal supplied from the packet data transfer control unit 205, and is supplied by the packet header. Main video data, audio data, or sub-picture data as packet data including the above is output to the corresponding decoder units 58, 60, 62, or DSI as packet data is output to the data RAM unit 56. .

Next, referring again to FIG. 1, FIG. 9 to FIG.
The operation of reproducing movie data from the optical disc 10 having the logical format shown in FIG. In FIG. 1, solid arrows between blocks indicate data buses.
Dashed arrows indicate control buses.

In the optical disk device shown in FIG. 1, when the power is turned on, the system ROM and RAM
From 52, the system CPU unit 50 reads the initial operation program and operates the disk drive unit 30. Therefore, the disk drive unit 30 stores the lead-in area 27
The read operation is started from the volume management information area 7 of the volume management area 70 following the lead-in area 27.
4, the volume management information is read. That is, the system CPU section 50 gives a read command to the disk drive section 30 in order to read the volume management information from the volume management information area 74 recorded at a predetermined position of the optical disk 10 set in the disk drive section 30. The contents of the volume management information are read out and temporarily stored in the data RAM unit 56 via the system processor unit 54. The system CPU unit 50 includes a data RAM unit 56
The information such as the recording position and the recording capacity of each file and other information necessary for management are extracted from the data string of the volume management information stored in the ROM, and are transferred to a predetermined location of the system ROM & RAM unit 52 and stored.

Next, the system CPU section 50 refers to the information of the recording position and the recording capacity of each file previously acquired from the system ROM & RAM section 52, and the file number 0
The disk information file 76 corresponding to the number is acquired. That is, the system CPU unit 50 stores the system ROM and the R
A read command is given from the AM unit 52 to the disk drive unit 30 with reference to the information on the recording position and the recording capacity of each file previously obtained, and the file management information of the disk information file 76 having the file number 0 is obtained. Read, via the system processor unit 54, the data RAM unit 56
To be stored. The obtained information is also stored in the system ROM &
The data is transferred to a predetermined location in the RAM unit 52 and stored.

The system CPU section 50 generates a setup menu using a character generator (not shown) and displays it on the screen of the monitor section 6. This setup menu is displayed on the monitor unit 6 as shown in FIG.
The display aspect ratio of 16: 9 or 4: 3, whether the angle mark is on or off, the rating code, and each item of the main menu are displayed.

In this display, the item highlighted by the up / down key 5m is changed so that the rating code portion is highlighted, that is, the personal identification number input mode is set. At this time, when the personal identification number is not set, the system CPU unit 50 causes the monitor unit 6 to display
As shown in FIG. 9A, the underline of the personal identification number portion of the rating code is displayed, and the first digit is displayed in blinking.

In response to this display, the numeric keypad 5b is pressed to
Enter the digit PIN. By inputting this four-digit personal identification number, the system CPU unit 50 causes the monitor unit 6 to operate as shown in FIG.
As shown in (b), the personal identification number input in the personal identification number portion of the rating code, for example, "1234", is displayed, and the input of the set key is displayed as a guide.
In this case, "0000" is a specific number, so
The password cannot be set. Further, when changing the inputted personal identification number, it can be inputted again by inputting the clear key 5k.

When the set key 51 is input in accordance with the above guide, the system CPU section 50 stores the set personal identification number in the RAM of the system ROM & RAM section 52, and the monitor section 6 of FIG. As shown in (c), "Lock Limitation" UNLIMIT
D “” is displayed. At this time, "UNLIMITED" is displayed as the initial value of the lock limitation (rating level) as the unreproducible level.

This rating level is the lock limit "R, UNLIMITED", which is a level that cannot be reproduced, by inputting the fast forward / return key 5h.
"PG13, R, UNLIMITED", "PG, PG
13, R, UNLIMITED "," G, PG, PG1
3, R, UNLIMITED ".

For example, PG is used as the rating level.
When 13 is selected, as shown in (d) of FIG. 29, the monitor unit 6 moves up and down in a state where “lock limit“ PG13, R, UNLIMITED ”” as a non-reproducible level is displayed. Input the key (▽ key) 5m. Then, the system CPU section 50 sets the set unreproducible level (PG13) to the system ROM & R.
It is stored in the RAM of the AM unit 52, and the monitor unit 6 further displays “Rating PG13” as shown in (e) of FIG.
Is displayed, and the highlighted item is changed to “Main Menu”.

Further, when the personal identification number input mode is set at the time of the above setup and the personal identification number has already been set, the system CPU section 50 causes the monitor section 6 to display the (f) of FIG.
As shown in, the code number "*****" is displayed in the code number portion and the first digit is displayed in blinking.

In response to this display, the numeric keypad 5b inputs "0000" as a specific number (see (g) in FIG. 30), and when the set key 5l is input, the system CPU section 50 displays the specific number. Judgment of input, judgment of resetting the personal identification number, clearing the personal identification number stored in the RAM of the system ROM & RAM section 52, setting the level setting value to the initial value "UNLIMITED", and setting the above personal identification number. 29. The display state of FIG.

Further, in response to the display of the personal identification number input mode, a four-digit personal identification number is input by the ten keys 5b (see (h) of FIG. 30), and when the set key 51 is input, the system CPU section 50 is pressed. Determines whether the input personal identification number matches the personal identification number stored in the RAM of the system ROM & RAM unit 52, and if the personal identification number matches, sets the rating level (c in FIG. 29). ), If the personal identification numbers do not match, the monitor section 6 displays “Rating code mismatch” as shown in (i) of FIG. 30, and 2 seconds later, (f) of FIG. Return to the password input screen of.

It is to be noted that FIGS. 29 (a) to 29 (e) and FIG.
The display of the setup screen of the monitor unit 6 shown in (f) to (i) of 0 is when the video is not being reproduced, and is displayed on the reproduction screen when the video is being reproduced. It has become.

Next, when the "main menu" item on the setup screen of the monitor section 6 is highlighted (see (e) in FIG. 29), when the set key 5l is pressed, the system CPU The unit 50 reproduces the sequence (title) selection menu of the menu video data area 84 by using the disc configuration information, the menu configuration information, and the cell information of the file management information of the disc information file 76, and the screen of the monitor unit 6 is displayed. To display.

The user designates the selection of the sequence (title) to be reproduced by using the key operation unit and the display unit 4 or the remote control 5 on the basis of the selection number written on the displayed menu screen. As a result, the file number and sequence information to which the selected sequence belongs are specified. In this sequence selection, there are a case where all sequences are selected based on a menu screen, and a case where a head sequence is selected and the next sequence is selected from menu cells included in a video cell at the end of the sequence.

Obtain the designated video file 78,
The operation until the reproduction of the video data 102 will be described below. In order to obtain sequence information for the designated sequence number, using the recording position and recording capacity of each video file 78 obtained from the volume management information 74,
First, the video file 7 to which the sequence to be reproduced belongs
8 is read out and stored in the data RAM unit 56 in the same manner as in the disk information file 76 described above.

The system CPU section 50 uses the file management table 113 of the file management information stored in the data RAM section 56 to determine the video attribute, audio stream attribute,
The sub-picture channel attributes are acquired, and the control signals corresponding to those attributes are supplied to the video decoder section 58, the audio decoder section 60, the sub-picture decoder section 62, the D / A & reproduction processing section 6.
4 is output.

The system CPU section 50 acquires the sequence information corresponding to the designated sequence number from the sequence information table 114 of the file management information area 101 stored in the data RAM section 56, and the data,
The cell information in the cell information table 115 necessary for reproducing the sequence is stored in the system ROM & RAM section 52.
Transfer to and store.

The cell information to be reproduced first is acquired by the cell reproduction order information in the sequence information thus acquired, and the disk drive unit 30 is based on the video data reproduction start address and size in the cell information. Is given a read instruction from the target address. The disk drive unit 30 drives the optical disk 10 according to the read command, reads data at a target address from the optical disk 10, and sends the data to the system processor unit 54. The system processor unit 54 temporarily stores the sent data in the data RAM unit 56, and as described above, based on the header information added to the data, the data type (main video, audio, sub-video, Disc search information, etc.), and the main video data, audio data, and sub-video data are decoded according to the determined type.
0 to 62, transfer the disk search information to the data RAM
Transfer to section 56.

This processing will be described with reference to the flowchart shown in FIG.

That is, the system CPU section 50 transfers the read command and the logical sector address of the pack to be reproduced to the disk drive section 30 (S1).

Then, the disk drive unit 30 seeks the target address (S2).

Then, the disk drive unit 30 performs error correction on the data of the target address and transfers the main data portion in the logical sector data to the system processor unit 54 (S3).

The system processor section 54 stores the read data of the logical sector in the data RAM section 56 (S
4).

The system processor unit 54 uses the data RA
The pack header is read from the beginning of the data of the logical sector stored in the M section 56, and its SCR (system time reference value) is stored (S5).

At this time, since the head of the logical sector and the head of the pack data coincide with each other, data can be taken out easily.

Then, the system processor unit 54 compares its own STC with the stored SCR of each pack, determines the pack corresponding to the SCR reaching the STC, that is, the pack to be reproduced and output, and determines the determined pack data. From the data RAM unit 56, and the packet transfer processing unit 2
The data type is discriminated at 00, and the data is transferred to the decoder units 58, 60, 62 or the data RAM unit 56 according to the discriminated type (S6).

Then, each of the decoder units 58, 60 and 62 decodes the data in accordance with the respective data format and the encoding method set above and sends it to the D / A & reproduction processing unit 64. After the D / A & playback processing section 64 converts the digital signal resulting from the decoding of the video data into an analog signal, it performs frame rate processing, aspect processing, pan scan processing, and the like according to the above set conditions, and sends it to the monitor section 6. Is output. D / A & playback processing unit 64
After the decoding result of the audio data is converted from a digital signal to an analog signal according to the set conditions, the D / A & reproduction processing section 64 performs a mixing process under the set conditions and outputs the result to the speaker section 8. You. The D / A & playback processing unit 64 converts the digital signal resulting from decoding the sub-picture data into an analog signal,
It is output to the monitor unit 6 (S7).

The above steps S3 to S7 are repeated until the reproduction is completed.

Next, the processing of the packet transfer processing section 200 will be described.

That is, the pack data read out from the data RAM section 56 is transferred through the memory I / F section 201 to the stuffing length detection section 202, pack type determination section 204,
Packet data transfer control unit 205 and decoder I /
It is supplied to the F section 206 (S11).

Accordingly, the stuffing length detection unit 20
2, the stuffing length is detected, and data indicating the stuffing length is output to the pack header end address calculation unit 203 (S12).

The pack header end address calculation unit 203 calculates the pack header end address based on the supplied stuffing length, and this pack header end address is the pack type determination unit 204 and the packet data transfer control unit 20.
5 is supplied (S13).

The pack type discriminating unit 204 determines which of the main video pack, the audio pack, the sub video pack and the DSI pack according to the supplied pack header end address and the content of the 4-byte data supplied next to the address. Is determined and the determination result is supplied to the packet data transfer control unit 205 (S14).

That is, when the 4-byte system header start code is supplied, it is determined to be a DSI pack,
A three-byte packet start code and a stream ID indicating a one-byte main video stream determine a main video pack, and a three-byte packet start code and a one-byte stream ID determine an audio pack.
It is discriminated as a sub-picture pack by the packet start code of bytes and the stream ID of 1 byte. However, in the case of a private stream as the stream ID, the substream ID following the packet header determines whether it is an audio pack or a sub-picture pack.

Then, the packet data transfer control unit 205
Determines the transfer destination and the packet start address according to the supplied pack type determination result and the pack header end address, and further determines the packet length in the packet header of the supplied pack data. As a result, the packet data transfer control unit 205 supplies a signal indicating the transfer destination as a transfer control signal to the decoder I / F unit 206, and the packet end address to the packet end address are supplied to the memory I / F unit 201. (S1
5).

Therefore, substantially effective packet data is transmitted from the memory I / F unit 201 via the data bus.
The data is supplied to the decoder I / F unit 206, and then transferred to the decoders 58, 60, 62 or the data RAM unit 56 as transfer destinations according to the type (S16).

At this time, since the pack data is of a constant length, the storage state in the data RAM section 56, that is, the start addresses are at regular intervals, so that the heads of the pack data in the data RAM section 56 are always at the same intervals. Since it is saved, the pack data management does not have to manage the address, but only the pack number.

In the process of discriminating the type of data, if the data is disc search information (DSI) indicating the reproduction position of the video data, the disc search information is not transferred to the decoder, and the reproduction data is reproduced. Is the data RAM
It is stored in the unit 56. This playback information is stored in the system CPU
The video data is referred to as needed by the unit 50 and used for monitoring when reproducing the video data.

When the reproduction of one cell is completed, the cell information to be reproduced next is obtained from the cell reproduction order information in the sequence information, and the reproduction is continued in the same manner.

Next, the basic operation when the optical disk reproducing apparatus reproduces the parental control target portion of the optical disk 10 in which the parental information is recorded will be described with reference to the flowchart shown in FIG.

First, the disk configuration information (DSINF) in the disk information file is read into the data RAM section 56 (S21). The parental information about all the sequences recorded on the optical disc 10 is referred from the read disc configuration information DSINF, and the titles subject to parental limitation are displayed on the monitor unit 6 (S2).
2). Whether or not the reproduction restriction of the parental target title is validated by a specific user (certified by confirming the secret code or the like) is keyed by the key operation unit and the display unit 4 or the remote control 5 (S23). However, the parental cancellation by a specific user is limited to only those levels lower than the reference level recorded in the system ROM and RAM section 52.
When the user cancels the parental control, the parental cancellation information is stored in the system ROM & RAM section 52. If the user does not release the parental control, the user can determine which of the sequence level, the cell level, and the level equivalent to 1 GOP the parental control is desired by the key operation unit and the display unit 4 or the remote control 5. Key input (S24, S2
5).

When the reproduction restriction at the sequence level is selected in step 25, each sequence information (SI) in the sequence information information table (SIT) 114 is read into the data RAM section 56, and the reproduction restriction start sequence number and the reproduction are started. A restriction end sequence number is detected (S2
6). Next, each sequence is sequentially read (S27),
It is determined whether or not each sequence is subject to playback restriction (S28). That is, it is determined whether or not it is a reproduction restriction target according to the parental level of each sequence. If it is a reproduction restriction target, the sequence is not reproduced (S29), a character indicating that parental control is being performed is displayed on the monitor unit 6 (S30), and then the next sequence is read. When the next sequence is not the parental control target (S28), the reproduction is restarted (S3).
1).

[0166] In addition, when the reproduction restriction at the cell level is selected in step 5, the cell information table (CI
T) is read into the data RAM section 56, and the reproduction restriction start cell number and the reproduction restriction end cell number are detected (S3).
2). Next, each cell is sequentially read (S33), and it is determined whether each cell is subject to playback restriction (S34). That is, it is determined whether or not it is subject to reproduction restriction according to the parental level of each cell. If it is subject to reproduction restriction, a reproduction prohibition signal is output to each of the decoder units 58, 60 and 62 and output of the decode signal is stopped. Or, because a cell shows a scene in a title,
Replace each scene with another. Alternatively, switching to a separately prepared multi-angle video is performed (S3
5). After that, characters indicating that the parental control is being performed are displayed on the monitor unit 6 (S36). When the cell playback restriction period ends (S34), playback inhibition or video replacement is canceled (S37), and playback is resumed (S3).
1).

If the reproduction restriction at the level equivalent to 1 GOP is selected in step 5, the pack data is sequentially read into the data RAM section 56 (S38), 1 GO.
Disc search information (DS
Parental information of each GOP is read from (I) (S)
39). From the result, it is determined whether or not the target GOP is reproduced (S40). Depending on the parental level of the target GOP, it is determined whether or not it is a reproduction restriction target. If it is a reproduction control target, the decoder units 58, 60,
A reproduction prohibition signal is output to 62, the output of the decode signal is stopped (S41), and a character indicating that the parental control is in progress is displayed on the monitor unit 6 (S42).

Incidentally, in the figure, steps 26 to 30 are a parental check routine at the sequence level,
Steps 32 to 36 are cell level parental check routines, and steps 38 to 42 are 1 GOP.
This is a parental check routine at the level.As shown in the figure, after the sequence-level parental check, the cell-level balancing check, which is the lower layer, is performed. A 1GOP level parental check will be conducted.

As a result, even if the reproduction jump suddenly occurs due to shock, vibration, etc., and the data for parental control is read, the parental check routine at the lower level works and the reproduction can be stopped.

Next, the rating level changing process will be described with reference to the flowchart shown in FIG.

That is, when the rating level is instructed to be changed while the image or the like is being reproduced or stopped, the system CPU section 50 causes the monitor section 6 to
The setup screen shown in (a) of FIG. 29 or (f) of FIG. 30 is displayed.

In this display, the item highlighted by the up / down key 5m is changed so that the rating code portion is highlighted, that is, the personal identification number input mode is set. At this time, when the personal identification number is not set, the system CPU unit 50 causes the monitor unit 6 to display
As shown in FIG. 9A, the underline of the personal identification number portion of the rating code is displayed, and the first digit is displayed in blinking.

In response to this display, the numeric keypad 5b
Enter the digit PIN. By inputting this four-digit personal identification number, the system CPU unit 50 causes the monitor unit 6 to operate as shown in FIG.
As shown in (b), the personal identification number input in the personal identification number portion of the rating code, for example, "1234", is displayed, and the input of the set key is displayed as a guide.

When the set key 51 is input according to this guidance, the system CPU section 50 stores the set personal identification number in the RAM of the system ROM & RAM section 52, and the monitor section 6 of FIG. As shown in (c), "Lock Limitation" UNLIMIT
D “” is displayed. At this time, "UNLIMITED" is displayed as the initial value of the lock limitation (rating level) as the unreproducible level.

Thereafter, the fast-forward / return key 5h is input to change the rating level as an unreproducible level, and the up / down key (∇ key) 5m is input, so that the system CPU section 50 causes the set reproduction failure. The possible level (PG13) is set to RA of the system ROM & RAM section 52.
Store it in M.

At this time, if the system CPU section 50 is reproducing a video or the like, whether the parental control level of the sequence (or cell unit or GOP unit) being reproduced is lower than the changed rating level. Check if
If it is low, the reproduction is continued, and if it is high, the reproduction is stopped.

When the input personal identification number is the specific number "0000", the process proceeds to the personal identification setting again, and when the input personal identification number coincides with the preset personal identification number, the above-mentioned rating level is reached. Go to change,
When the input personal identification number matches the preset personal identification number, the monitor unit 6 guides the personal identification number error message.

If the personal identification number is already set when the personal identification number input mode is set, the system CPU unit 50
On the monitor unit 6, as shown in (f) of FIG. 30, “***” is displayed in the personal identification number portion of the rating code and the first digit is displayed in blinking.

In response to this display, when the numeric keypad 5b inputs "0000" as a specific number (see (g) of FIG. 30) and the set key 5l is input, the system CPU section 50 displays the specific number. Judgment of input, judgment of resetting the personal identification number, clearing the personal identification number stored in the RAM of the system ROM & RAM section 52, setting the level setting value to the initial value "UNLIMITED", and setting the above personal identification number. 29. The display state of FIG.

Further, in response to the display of the personal identification number input mode, when the four-digit personal identification number is input by the ten keys 5b (see (h) of FIG. 30) and the set key 5l is input, the system CPU section 50 is pressed. 29 determines whether the input personal identification number matches the personal identification number stored in the RAM of the system ROM & RAM section 52, and if the personal identification number matches, changes the rating level (c in FIG. 29). ), If the personal identification numbers do not match, the monitor section 6 displays “Rating code mismatch” as shown in (i) of FIG. 30, and 2 seconds later, (f) of FIG. Return to the password input screen of.

As described above, by comparing the level of parental control given to a video or the like whose reproduction should be restricted on the optical disk with the rating level set on the reproducing side, Is restricted, and the rating level is changed by password verification.

As a result, when data such as video is reproduced from the optical disc, the reproduction can be limited by the parental control level given to the data and the rating level set on the reproducing side. Moreover, the rating level can be changed by password verification.

Further, when the personal identification number is a specific number, the personal identification number can be reset, the rating level can be changed, and a countermeasure can be taken when the user forgets the personal identification number.

Next, referring to FIGS. 34 to 43, the video data in the logical format shown in FIGS. 9 to 19 and the recording method on the optical disc 10 for reproducing the video data and the recording method thereof are applied. The recording system will be described.

FIG. 34 shows an encoder system that encodes video data to generate a video file. In the system shown in FIG. 34, as a source of main video data, audio data, and sub video data, for example, a video tape recorder (VTR) 211,
An audio tape recorder (ATR) 212 and a sub picture source (Subpicture source) 213 are adopted. These generate main video data, audio data, and sub-video data under the control of the system controller (Sys con) 215, and these generate video encoder (VEN).
C) 216, audio encoder (AENC) 217
And a sub-picture encoder (SPENC) 218. Similarly, under the control of the system controller (Sys con) 215, the encoders 216, 217, and 218 A
Main video data, audio data and sub-video data (Comp Video, Comp Audio, Comp Sub
-pict) in the memories 220, 221, 222. The main video data, audio data and sub video data (Comp Video, Comp Audio, Comp Sub-pict)
Is output to the file formatter (FFMT) 224 by the system controller (Sys con) 215, converted into the file structure of the video data of this system as described above, and information such as setting conditions and attributes of each data is stored in the file. As a system controller (Sys con
) 215 to the memory 226.

A standard flowchart of the encoding process in the system controller (Sys con) 215 for creating a file from video data will be described below.

According to the flow chart shown in FIG. 35, main video data and audio data are encoded and encoded main video and audio data (Comp Video,
CompAudio) data is created. That is, when the encoding process is started, the parameters necessary for encoding the main video data and audio data are set as shown in step 70 of FIG. Some of the set parameters are set in the system controller (Sys con
) 215 and file formatter
Used in (FFMT) 224. As shown in step S71, the main video data is pre-encoded using the parameters, and the optimal code amount distribution is calculated. Step S7
As shown in 2, the main video is encoded based on the code amount distribution obtained by the pre-encoding. At this time, the encoding of the audio data is performed at the same time. If necessary, as shown in step S73, partial re-encoding of the main video data is executed, and the main video data of the re-encoded portion is replaced. Through this series of steps, the main video data and audio data are encoded. Steps S74 and S75
As shown in, sub-picture data is encoded and encoded sub-picture data (Comp Sub-pict) is created. That is, parameters necessary for encoding the sub-picture data are set in the same manner. Some of the parameters set as shown in step S74 are set in the system controller (Sy
s con), which is stored in the file formatter (FFM
T) 224. Sub-picture data is encoded based on these parameters. By this processing, the sub-picture data is encoded.

According to the flow chart shown in FIG. 36, encoded main video data, audio data, and sub video data (Comp Video, Comp Audio, Comp Sub-pict) are encoded.
) Are combined and converted into a file structure of video data as described with reference to FIG. That is, as shown in step S76, the cell 105 as the minimum unit of the video data is set, and the cell information table (CIT) 11
5 is created. Next, as shown in step S77, the configuration of the cell 105 that constitutes the sequence 106, the main video,
A file including a cell information table (CIT) 115 in which sub-picture and audio attributes, parental level, etc. are set (for some of these attribute information, information obtained at each data encoding is used). Management information (FM
I) is created. Next, as shown in step 78, the main video data, audio data, and sub-video data encoded (Comp Video, Comp Audio, Comp Sub-pict) are encoded.
10 is divided into fixed packs and each data cell is arranged while inserting the DSI pack 92 in which the parental level is set for each GOP unit so that the data can be reproduced in order of the time code of each data. The disk information file 76 and the file 78 such as a movie file are formatted as shown in FIG. At this time, packing is performed according to the logical sector length.

In the flow chart shown in FIG. 36, the sequence information uses the database of the system controller (Sys con) 215 in the process of step S77, or if necessary, the data (parental level, etc.). Is re-input and is described in the sequence information table (SIT) 114.

FIG. 37 shows a disk formatter system for recording the files 76 and 78 formatted as described above on an optical disk. As shown in FIG. 29, in the disk formatter system, the file formatter (VFMT) 23 stores these file data from the memories 230 and 232 in which the created information files 76 and files 78 such as movie files are stored.
6. Volume formatter (VFMT)
In 236, in addition to the files 76 and 78, the volume information 74 of the disc is added in the arrangement order shown in FIG. 9 to create logical data in a state to be recorded on the disc 10. Volume formatter (VFMT) 236
Data for error correction is added to the logical data created in (1) by the disk formatter (DFMT) 238 and reconverted into physical data to be recorded on the disk. In a modulator (Modulator) 240, the physical data created by a disk formatter (DFMT) 238 is converted into recording data to be actually recorded on the optical disk 10, and this modulated recording data is recorded in a recorder (242).
Is recorded on the disk 10 by

A standard flow chart for creating the above-mentioned disc will be described with reference to FIGS. 38 and 39. FIG. 38 shows a flowchart for creating logical data for recording on the optical disc 10. That is, as shown in step S80, parameter data such as the number of video data files, the order of arrangement, and the size of each video data file are set first. Next, volume information is created from the parameters set as shown in step S81 and the file management information of each video data file. After that, as shown in step S82, the data is arranged in order of the volume information and the video data file along the corresponding logical block number, and the logical data to be recorded on the optical disc 10 is created.

After that, the optical disc 1 as shown in FIG.
A flowchart for creating physical data for recording to 0 is executed. That is, as shown in step S83, the logical data is divided into a fixed number of bytes, and error correction data is generated. Next, as shown in step S84, the logical data divided into a fixed number of bytes and the generated data for error correction are combined to create a physical sector.
Thereafter, as shown in step S85, physical data is created by combining the physical sectors.

In this way, the physical data generated by the flow chart shown in FIG. 39 is subjected to the modulation processing based on the fixed rule to create the recording data. Thereafter, the recording data is recorded on the disk 10.

A flowchart for converting the encoded main video data, audio data, and sub-video data (Comp Video, Comp Audio, Comp Sub-pict) described with reference to FIG. 36 into a file structure of video data. In the process of creating one or more sequences, the process of creating sequence information and cell playback order will be described in more detail with reference to FIGS. 40 to 43. 40 and 42 show the relationship between the cell information (CI) regarding the video cell 105 and the sequence information (SI) regarding the sequence 106. Note that FIGS. 40 and 41 are drawn so that both are joined at the corresponding portions to form one drawing. In addition, FIG. 43 corresponds to FIG. 40 and FIG.
6 is a flowchart showing a process of creating a sequence in the sequence information and cell reproduction order shown in FIG.

Consider the case of creating a sequence (Seq-n) in FIGS. 40 and 41. Using a personal computer, a workstation, or the like, a plurality of video cells are prepared on the hard disk or memory by dividing the video data into units of a required size as shown in step S90 of FIG. 43. It As shown in step S92, the size of each prepared video cell (S
na), playback time (Tna), type (Cn) indicating content, etc.
Information such as a), the corresponding language code (Lna), and parental level is acquired as cell information (Cl). As shown in step S93, each cell information (CI) is collected as a table in the order of description, and a cell information table (CI
T) is created. From the cell information table (CIT) created in this way, the cell numbers (#n, #n) forming the sequence (Seq-n) as shown in step S94.
+1, # n + 2) is taken out, and the number of sequence constituent cells constituting the sequence is determined. Further, the sequence reproduction time is obtained from the total time (Tna + Tnb + Tnc) of the constituent cells. As shown in step S95, cell numbers in the cell information table (CI) description order from # 1 are stored in the cell playback order list that determines the playback order of the sequence from the number of sequence constituent cells.
A cell playback order list is created as shown in (A) to (D). The sequence information (SI) #n is formed by assembling the information such as the number of sequence constituent cells, the sequence reproduction time, and the cell reproduction order list. Next, the next sequence is created in the same manner as shown in step S96.

When there are no more sequences to be created, as shown in step S97, all sequence information (SI) are assigned numbers from # 1 in the order of description, stored in the sequence information table (SIT), and the sequence creation is completed. It

Finally, the total number of sequences, the start position of the sequence information table, the start position of each sequence information,
The file is configured by storing the start position of the cell information table and the like in a predetermined location of the file management table.

In the above-mentioned embodiments, the high density recording type optical disk has been described as the recording medium.
The present invention is directed to a storage medium other than the optical disc, for example,
The present invention can also be applied to a magnetic disk or another storage medium capable of physically recording at high density.

[0199]

As described in detail above, according to the present invention,
When reproducing the data recorded on the recording medium, the reproduction can be restricted by the parental control level given to the data and the restriction level set on the reproduction side. It is possible to provide a reproducing apparatus and a reproducing method thereof that can be changed by password verification.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an optical disk reproducing apparatus for explaining an embodiment of the present invention.

FIG. 2 is a diagram for explaining the configuration of a disk drive unit.

FIG. 3 is a perspective view for explaining the configuration of an optical disc.

FIG. 4 is a diagram for explaining a recording configuration of an optical disc.

FIG. 5 is a diagram for explaining a relationship between a parental control level and a rating level.

FIG. 6 is a diagram for explaining a relationship between a rating level that is set and a parental control level of a viewable sequence.

FIG. 7 is a diagram for explaining a configuration of a key operation unit and a display unit.

FIG. 8 is a diagram for explaining the configuration of a remote control.

FIG. 9 is a diagram for explaining a volume structure of an optical disc.

FIG. 10 is a diagram for explaining the structure of a disc information file.

FIG. 11 is a diagram for explaining parameters of disk configuration information.

FIG. 12 is a diagram for explaining parameters of menu configuration information.

FIG. 13 is a diagram for explaining parameters of menu cell information.

FIG. 14 is a diagram for explaining a specific example of disk configuration information.

FIG. 15 is a diagram for explaining the structure of a video file.

FIG. 16 is a diagram for explaining a hierarchical structure of image data stored in a file.

FIG. 17 is a 1GO constituting the video cell shown in FIG.
It is explanatory drawing which shows P.

FIG. 18 is a diagram for explaining the contents of cell information stored in a cell information table.

FIG. 19 is a diagram for explaining the content of one piece of sequence information stored in the sequence information table.

FIG. 20 is a diagram for explaining parameters recorded in a file management table.

FIG. 21 is a diagram for explaining the structure of a video file.

FIG. 22 is a diagram for explaining the structure of a disc search information pack.

FIG. 23 is a diagram for explaining the configuration of a main video pack.

FIG. 24 is a diagram for explaining the configuration of an audio pack.

FIG. 25 is a diagram for explaining the configuration of a sub-picture pack.

FIG. 26 is a diagram showing a configuration example of disc search information.

FIG. 27 is a diagram for explaining parameters of general information in disc search information.

FIG. 28 is a block diagram for explaining the configuration of a packet transfer processing unit.

FIG. 29 is a view showing a display example of the monitor unit when a personal identification number is set and a rating level is set (changed).

FIG. 30 is a diagram showing a display example of the monitor unit when a personal identification number is input and when the personal identification number does not match.

FIG. 31 is a flowchart for explaining packet transfer processing.

FIG. 32 is a flowchart for explaining parental control processing.

FIG. 33 is a flowchart for explaining a specific example of a main part of parental control processing.

FIG. 34 is a block diagram showing an encoder system that encodes video data to generate a video file.

FIG. 35 is a flowchart showing the encoding process shown in FIG. 34.

36 is a flowchart for creating a video data file by combining main video data, audio data, and sub-video data encoded by the flow shown in FIG.

FIG. 37 is a block diagram showing a system of a disc formatter for recording a formatted video file on an optical disc.

38 is a flow chart for creating logical data to be recorded on the disc in the disc formatter shown in FIG. 37. FIG.

FIG. 39 is a flowchart for creating physical data to be recorded on a disc from logical data.

FIG. 40 is an explanatory diagram showing the relationship between cell information and sequence information.

FIG. 41 is an explanatory view showing the relationship between cell information and sequence information in the same manner.

FIG. 42 is an explanatory view showing the relationship between cell information and sequence information in the same manner.

FIG. 43 is a flowchart illustrating a process of creating cell information and sequence information.

[Explanation of symbols]

 4 ... Key operation part and display part 5 ... Remote control 5b ... Numeric keypad 5h ... Fast forward / return key 5k ... Clear key 5l ... Set key 5m ... Up / down key 6 ... Monitor part 8 ... Speaker part 10 ... Optical disk 30 ... Disk drive part 50 ... system CPU section 52 ... system ROM and RAM 54 ... system processor section 56 ... data RAM section 58 ... audio decoder section 60 ... sub-picture decoder section 62 ... sub-picture decoder section 64 ... D / A & reproduction processing section 200 ... packet transfer Processing unit

Claims (10)

[Claims] 1. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. Reading means for reading the restriction level of, the setting means for setting a plurality of second restriction levels on the side of the device by secret code identification, the first restriction level read by the reading means, and the setting means set by the setting means. And a second limiting level, which determines whether or not the reproduction of the data is prohibited, and the determination means determines whether or not the reproduction of the data is prohibited. In this case, when the prohibition means for prohibiting the reproduction of the data read by the reading means and the prohibition of the data reproduction by the judging means are not judged, the data read by the reading means is reproduced and outputted. A reproducing apparatus comprising: a converting unit for converting. 2. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. Is read and the read first restriction level is compared with the second restriction levels of a plurality of levels set in advance on the device side by secret code verification, whereby the reproduction of data is prohibited. It is determined whether or not the reproduction of the data is prohibited by this determination, and the reproduction of the read data is prohibited, and the prohibition of the reproduction of the data is determined by the above determination. Reproducing method is if not, converts the read is the data to the reproduction output, and wherein the. 3. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. Reading means for reading the restriction level of, the setting means for setting a plurality of second restriction levels on the side of the device by secret code identification, the first restriction level read by the reading means, and the setting means set by the setting means. And a second limiting level, which determines whether or not the reproduction of the data is prohibited, and the determination means determines whether or not the reproduction of the data is prohibited. In this case, when the prohibition means for prohibiting the reproduction of the data read by the reading means and the prohibition of the data reproduction by the judging means are not judged, the data read by the reading means is reproduced and outputted. A reproducing apparatus comprising: a converting unit for converting, and a changing unit for changing the second restriction level set by the setting unit by the password matching. 4. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. Is read, and the read first limit level is compared with the second limit levels of a plurality of levels set on the device side by the password comparison to determine whether data reproduction is prohibited. If it is determined that the reproduction of the data has been prohibited by this determination, the reproduction of the read data is prohibited, and if the reproduction of the data is not prohibited by the determination described above. A reproduction method for the read is data converted into reproduction output, changes the second limit level being the set by the password collation, characterized in that. 5. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. Reading means for reading the restriction level of, the setting means for setting a plurality of second restriction levels on the side of the device by secret code identification, the first restriction level read by the reading means, and the setting means set by the setting means. And a second limiting level, which determines whether or not the reproduction of the data is prohibited, and the determination means determines whether or not the reproduction of the data is prohibited. In this case, when the prohibition means for prohibiting the reproduction of the data read by the reading means and the prohibition of the data reproduction by the judging means are not judged, the data read by the reading means is reproduced and outputted. A reproducing apparatus comprising: a converting unit for converting, and a changing unit for changing the second restriction level set by the setting unit by inputting a specific number different from the secret code. 6. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is stored in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. Is read, and the read first limit level is compared with the second limit levels of a plurality of levels set on the device side by the password comparison to determine whether data reproduction is prohibited. If it is determined that the reproduction of the data has been prohibited by this determination, the reproduction of the read data is prohibited, and if the reproduction of the data is not prohibited by the determination described above. A reproduction method for the read is data converted into reproduction output, changes the second limit level being the set by the input of different specific numbers and the personal identification, characterized in that. 7. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. Reading means for reading the restriction level, first setting means for setting a secret code, and a second restriction level for setting a plurality of levels on the device side when the secret code is set by the first setting means. Whether the reproduction of the data is prohibited by comparing the second limit level set by the second setting means and the first limit level read by the reading means with the second limit level set by the second setting means. A first determining means for determining whether or not, and a prohibiting means for inhibiting the reproduction of the data read by the reading means when the first determination means determines that the reproduction of the data is prohibited; When the prohibition of the reproduction of the data is not judged by the judgment means of No. 1, the conversion means for converting the data read by the reading means into the reproduction output, the input means for inputting the personal identification code, and the input by the input means Second judging means for judging whether or not the secret code and the secret code set by the first setting means coincide with each other, and when the coincidence of the secret code is judged by the second judging means, A reproducing apparatus comprising: a changing unit that changes the second limit level set by the second setting unit. 8. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. When the password is set, the second limit level of a plurality of levels on the device side is set, and the read first limit level and the second limit level set above are read. By comparing the above, it is determined whether or not the reproduction of the data is prohibited, and when the judgment of the reproduction of the data is judged by this judgment, the reproduction of the read data is prohibited, When the prohibition of data reproduction is not judged, the read data is converted into the reproduction output, and it is judged whether the input secret code and the set secret code match. A reproducing method, characterized in that, when it is determined that the passwords match, the second restriction level set above is changed. 9. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. Reading means for reading the restriction level, first setting means for setting a secret code, and a second restriction level for setting a plurality of levels on the device side when the secret code is set by the first setting means. Whether the reproduction of the data is prohibited by comparing the second limit level set by the second setting means with the first limit level read by the reading means and the second limit level set by the second setting means. A first determining means for determining whether or not, and a prohibiting means for inhibiting the reproduction of the data read by the reading means when the first determination means determines that the reproduction of the data is prohibited; When the prohibition of the reproduction of the data is not judged by the judgment means of No. 1, the conversion means for converting the data read by the reading means into the reproduction output, the input means for inputting the secret code, and the input means for the input Second judging means for judging whether or not the secret code and the secret code set by the first setting means coincide with each other, and when the coincidence of the secret code is judged by the second judging means, First changing means for changing the second limit level set by the second setting means, and second setting means set by the second setting means by inputting a specific number different from the secret code. Limit A reproducing device comprising: a second changing unit for changing the bell. 10. A management area is formed in a part of the area and a data area is formed in another area, at least one data is recorded in the data area, and the data of the data area is recorded in the management area. In a reproducing apparatus for reproducing data from a recording medium on which a plurality of first restriction levels for selectively restricting reproduction are recorded, the first data of the data area of the recording medium and the first data of the management area are provided. When the password is set, the second limit level of a plurality of levels on the device side is set, and the read first limit level and the second limit level set above are read. By comparing the above, it is determined whether or not the reproduction of the data is prohibited, and when it is determined that the reproduction of the data is prohibited, the reproduction of the read data is prohibited and Yo , When the prohibition of data reproduction is not judged, the read data is converted into the reproduction output, and it is judged whether or not the input secret code and the set secret code match. When the coincidence of the secret code is determined by, the second limit level set above is changed, and the second limit level set above is changed by inputting a specific number different from the above secret code. Playback method characterized by.