JP2003009090A - Optical disk, reproducing device and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide freedom to a title producer when he or she produces various video streams concerning one audio sequence. SOLUTION: A data storage medium stores the audio sequence which comprises at least one sound stream, at least one video stream and reproduction control information which controls the reproduction of at least one sound stream and at least one video stream. Reproduction control information comprises reproduction order information which regulates the order of at least one video stream to be reproduced in synchronization with the reproduction of the audio sequence among one or more video streams recorded in a recording medium.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data storage medium storing still image data and audio data, a reproducing apparatus and a reproducing method for reproducing high-quality audio data and still image data.

[0002]

2. Description of the Related Art Conventionally, as an optical disk and a reproducing apparatus for recording and reproducing music information or moving picture information including sound, a CD (Compact Disk) and an LD (L) have been used.
aser Disk) is known.

A CD is a disc for digitally recording music information on an optical disc having a diameter of 12 cm by using a coding technique called linear PCM, and has been used as an application recording medium for music. The LD has a diameter of 3
It is a disc for recording moving image information with audio as an analog signal on a 0 cm optical disc, and has been used as a recording medium for video applications such as movies.

Recently, a part of the above information is recorded on an optical disc having a diameter of about 12 cm in order to digitize music information including moving voice and moving picture information and to record for a long time or to secure sufficient quality. Optical discs having a file structure that facilitates data exchange with a computer or communication are also beginning to appear.

Under the above circumstances, there is a demand for recording and reproducing audio information of higher quality than that of CD. Among them, it is possible to reproduce high quality audio of linear PCM and 96 kHz / 24 bits sampling. DVD-Vi
deo was developed and realized. However, DVD
In the Video standard, reproduction of high quality linear PCM multi-surround sound or higher quality sound is impossible, and higher quality is demanded. However, the high-quality audio data has a large amount of data and a high reproduction speed of data necessary for reproduction, and thus it is difficult to record and reproduce image data at the same time.

Further, in the case of reproducing a voice title, there is a demand that the image data be treated as auxiliary data of the voice data and used for displaying lyrics, a so-called jacket picture such as the figure of the performer, which is realized. Includes playing back video data in synchronization with playback of high-quality audio data, playing back audio data and video data asynchronously, operating video data with key operation, and special effects when switching video data. It is required to be more flexible and multi-functional, such as to realize.

Further, it is required to reproduce the data as intended by the title maker without depending on the initial operation defined by the system when the disc is inserted and whether or not direct selection of audio data is possible depending on the operation of the player. There is.

[0008]

The conventional optical disc, the reproducing apparatus and the reproducing method are configured as described above,
There is a problem that it is difficult to record high quality digital audio data together with video data. That is, if the transfer rate of high-quality audio data is almost the same as the read speed of the optical disk, reproducing the video data at the same time as the audio means that the audio data and the video data are reproduced as in the conventional optical disk or reproducing device. Cannot be realized by the method of multiplexing. This is because, when the audio data and the video data are multiplexed, the transfer speed thereof exceeds the read speed of the optical disk, and continuous reproduction cannot be guaranteed. Also, as is often used in computer applications, it is also impossible to use a method of simultaneously reproducing audio data and video data recorded in different areas of an optical disk by appropriately buffering audio data and video data. . Because
Since the sum of the transfer rates of audio data and video data must be less than or equal to the reproduction speed of the optical disk in order to continuously reproduce the data recorded on the disk for one hour or more like a compact disk. Is.

[0009] Further, a reproducing method (Browsable) in which only the video is switched by an instruction from the user while continuously reproducing the audio, or the video data is automatically switched in synchronization with a specific position of the audio data. There is a problem that it is impossible to perform such a reproducing method (SlideShow).

The present invention has been made in view of the above problems, and provides high quality digital audio data,
It is an object of the present invention to provide an optical disc that can be reproduced with video data added under a limited bit rate.

Another object of the present invention is to provide a mode for synchronously reproducing high-quality digital audio and video data, and an optical disk capable of asynchronous reproduction and switching the video by time or user operation, a reproducing apparatus and a reproducing method. And

Further, when the audio data and the video data are reproduced as independent streams, it is possible to reproduce them by using a general MPEG stream decoder device, and it is possible to inexpensively produce high quality digital audio data with limited bits. It is an object of the present invention to provide a reproducing apparatus capable of reproducing video data at a rate.

[0013]

The data storage medium of the present invention reproduces an audio sequence including at least one audio stream, at least one video stream, the at least one audio stream and the at least one video stream. And a reproduction control information for controlling the reproduction control information, wherein the reproduction control information is reproduced in synchronization with reproduction of the audio sequence in at least one video stream stored in the data storage medium. Playback order information that defines the order of at least one video stream. This achieves the above object.

The reproduction control information is video reproduction mode information indicating whether or not the order of the at least one video stream reproduced in synchronization with the audio sequence can be changed based on an interaction from a user. It may further include.

The reproduction control information may further include video reproduction mode information indicating whether the reproduction timing or the reproduction time of the at least one video stream reproduced in synchronization with the audio sequence is specified. Good.

The reproduction control information further includes reproduction order mode information indicating whether the at least one video stream, the reproduction order of which is defined by the reproduction order information, is randomly reproduced or sequentially reproduced. Good.

[0017] The reproduction order mode information may further indicate whether the at least one video stream is randomly reproduced while allowing duplication or is prohibited and is reproduced at random.

The audio sequence may correspond to one or more programs, and at least one video stream stored in the data storage medium may be grouped in units of the programs.

A reproducing apparatus of the present invention is a reproducing apparatus for reproducing a data storage medium, wherein the data storage medium includes an audio sequence including at least one audio stream, at least one video stream, and the at least one. One audio stream and reproduction control information for controlling reproduction of the at least one video stream are stored, and the reproduction control information is reproduction of the audio sequence of the at least one video stream stored in the data storage medium. Playback order information defining the order of at least one video stream to be played back in synchronism with the audio sequence stored in the data storage medium and the at least one video stream. The reading section and the playback order information In order to be constant, in synchronization with reproduction of the audio sequence includes a reproduction section for reproducing the at least one video stream, thereby the objective described above being achieved.

The reproduction control information includes video reproduction mode information indicating whether or not the order of the at least one video stream reproduced in synchronization with the audio sequence can be changed based on an interaction from a user. It may further include.

The reproduction control information may further include video reproduction mode information indicating whether the reproduction timing or the reproduction time of the at least one video stream reproduced in synchronization with the audio sequence is specified. Good.

The reproduction control information further includes reproduction order mode information indicating whether the at least one video stream, the reproduction order of which is defined by the reproduction order information, is randomly reproduced or sequentially reproduced. Good.

[0023] The reproduction order mode information may further indicate whether the at least one video stream is randomly reproduced while allowing duplication or is prohibited and is reproduced at random.

Prior to the reproduction of the audio sequence, the at least one video stream reproduced in synchronization with the audio sequence may be buffered in a buffer provided in the reproduction device.

The reproducing method of the present invention is a reproducing method for reproducing a data storage medium, wherein the data storage medium includes an audio sequence including at least one audio stream, at least one video stream, and the at least one. One audio stream and reproduction control information for controlling reproduction of the at least one video stream are stored, and the reproduction control information is reproduction of the audio sequence of the at least one video stream stored in the data storage medium. Playback order information that defines the order of at least one video stream to be played back in synchronization with, and the playback method reads the audio sequence and the at least one video stream stored in the data storage medium. Steps and playback order information In order to be said in synchronism with playback of the audio sequence includes a step of reproducing at least one video stream, thereby the objective described above being achieved.

The reproduction control information includes video reproduction mode information indicating whether or not the order of the at least one video stream reproduced in synchronization with the audio sequence can be changed based on an interaction from a user. It may further include.

The reproduction control information may further include video reproduction mode information indicating whether the reproduction timing or the reproduction time of the at least one video stream reproduced in synchronization with the audio sequence is specified. Good.

The reproduction control information further includes reproduction order mode information indicating whether the at least one video stream, the reproduction order of which is defined by the reproduction order information, is randomly reproduced or sequentially reproduced. Good.

[0029] The reproduction order mode information may further indicate whether the at least one video stream is randomly reproduced while allowing duplication or it is randomly reproduced while prohibiting duplication.

Prior to the reproduction of the audio sequence, the at least one video stream reproduced in synchronization with the audio sequence may be buffered in a buffer provided in the reproduction device.

The data storage medium of the present invention is a data storage medium storing a first system stream and a second system stream to be reproduced in synchronization with each other,
The first system stream has reproduction control information indicating a timing at which the first system stream is reproduced, and the second system stream is reproduced according to information other than the information included in the second system stream. Timing is controlled. This achieves the above object.

The reproducing apparatus of the present invention is a reproducing apparatus for reproducing a data storage medium storing a first system stream and a second system stream to be reproduced in synchronization with each other, wherein the first system stream is the First
The playback device has playback control information indicating a timing at which the system stream is played back, and the playback device reads out the first system stream and the second system stream stored in the data storage medium;
A decoder unit for decoding the first system stream according to the reproduction control information is provided, and the second system stream is decoded according to a control signal supplied from the outside of the decoder unit. This achieves the above object.

The reproducing method of the present invention is a reproducing method for reproducing a data storage medium storing a first system stream and a second system stream to be reproduced in synchronization with each other, wherein the first system stream is the First
The reproduction method includes reproduction control information indicating a timing at which the system stream is reproduced, and the reproduction method includes a step of reading the first system stream and the second system stream stored in the data storage medium, and the reproduction control. Controlling the timing of reproducing the first system stream according to the information;
Controlling the timing of reproducing the second system stream according to information other than the information contained in the system stream, whereby the above object is achieved.

[0034]

(Embodiment 1) An optical disk according to Embodiment 1 of the present invention will be described. (1) Physical Structure of Optical Disk FIG. 1A shows a DVD 10 which is a multimedia optical disk.
It is a figure which shows the external appearance of FIG. FIG. 1B is a sectional view of the DVD 107 taken along the line AA ′ shown in FIG. 1A. FIG. 1C is an enlarged view of a portion B shown in FIG. 1B.

As shown in FIG. 1B, the DVD 107 has a first transparent substrate 108, an information layer 109, and an adhesive layer 11.
0, the second transparent substrate 111, and the printing layer 112 for label printing are laminated in this order.

The first transparent substrate 108 and the second transparent substrate 111 are reinforcing substrates made of the same material. In the example shown in FIG. 1B, the thickness of these substrates is about 0.6 mm. The thickness of these substrates is approximately 0.5 mm to 0.7 m.
m is sufficient.

The adhesive layer 110 is provided between the information layer 109 and the second transparent substrate 111 to bond the information layer 109 and the second transparent substrate 111.

A reflective film (not shown) such as a metal thin film is formed on the surface of the information layer 109 which is in contact with the first transparent substrate 108. Concave and convex pits are formed in high density on this reflective film by a molding technique.

FIG. 1D shows the shape of pits formed in the reflective film. In the example shown in FIG. 1D, the length of each pit is 0.4 μm to 2.13 μm. 1 for DVD107
The book track is formed in a spiral shape. Each pit is
The DVD 107 is formed along the spiral track so as to have an interval of 0.74 μm in the radial direction of the DVD 107. In this way, a pit row is formed on the spiral track.

When the DVD 107 is irradiated with the light beam 113, a light spot 114 is formed on the information layer 109 as shown in FIG. 1C. The information stored on the DVD 107 is detected as a change in the reflectance of the portion of the information layer 119 illuminated by the light spot 114.

The diameter of the light spot 114 on the DVD 107 is about 1 / 1.6 times the diameter of the light spot on the CD (Compact Disk). The numerical aperture NA of the objective lens for DVD is larger than the numerical aperture NA of the objective lens for CD, and the wavelength λ of the light beam for DVD is CD.
This is because the wavelength is smaller than the wavelength λ of the light beam for use.

The DVD having such a physical structure can store about 4.7 GB of information on one side.
The storage capacity of about 4.7 GB is close to eight times the storage capacity of a conventional CD. Due to the large storage capacity of such a DVD,
It is possible to significantly improve the image quality of moving images. It is also possible to significantly improve the playback time of the moving image. The reproduction time of a conventional video CD is 74 minutes, whereas the reproduction time of a DVD is 2 hours or more.

The basic technology for realizing such a large storage capacity is the miniaturization of the spot diameter D of the light beam. The spot diameter D is given by the following formula: spot diameter D = laser wavelength λ / objective lens numerical aperture NA. Therefore, the spot diameter D can be narrowed down by decreasing the wavelength λ of the laser and increasing the numerical aperture NA of the objective lens. Here, it should be noted that the numerical aperture NA of the objective lens
When is large, coma is generated due to the relative inclination (that is, tilt) between the disk surface and the optical axis of the light beam. In DVDs, coma is reduced by reducing the thickness of the transparent substrate. When the thickness of the transparent substrate is reduced, another problem that the mechanical strength of the disc is weakened may occur. In DVD, the strength of the transparent substrate is reinforced by bonding another substrate to the transparent substrate.
This overcomes the problems with the mechanical strength of the disc.

To read the information stored on the DVD, a red semiconductor laser with a short wavelength of 650 nm and an objective lens with a large numerical aperture (NA) of about 0.6 mm are used. In addition to this, by using a thin transparent substrate of about 0.6 mm, it is possible to use about 4.7 G on one side of an optical disc with a diameter of 120 mm.
It became possible to store bytes of information.

FIG. 2A schematically shows how the spiral track 20 is formed from the inner circumference to the outer circumference of the information layer 109 of the DVD 107. The spiral track 20 is divided into predetermined units called sectors. In FIG. 2A,
Sectors are indicated by symbols such as S1, S2, ..., S99, S100. The reading of the information stored in the DVD 107 is performed in sector units.

FIG. 2B shows the internal structure of the sector. The sector includes a sector header area 21 and a user data area 22.
And an error correction code storage area 23.

The sector header area 21 stores a sector address for identifying a sector and its error detection code. The disk reproducing apparatus determines from which sector among a plurality of sectors the information should be read based on the sector address.

The user data area 22 has 2 KBytes.
Stores long data.

The error correction code storage area 23 stores error correction codes for the sector header area 21 and the user data area 22 included in the same sector. When reading data from the user data area 22, the disc reproducing apparatus performs error detection using an error correction code, and performs error correction according to the result of error detection. This guarantees the reliability of data reading.

(2) Logical Structure of Optical Disk FIG. 3 shows the logical structure of the DVD 107 which is an optical disk. As shown in FIG. 3, the area of the DVD 107 is divided into a lead-in area 31, a volume area 32, and a lead-out area 33. These areas can be identified by the identification information included in the sector address of the physical sector. Physical sectors are arranged in ascending order by sector address.

The lead-in area 31 stores data for stabilizing the operation of the disc reproducing apparatus at the start of reading.

No meaningful data is stored in the lead-out area 33. The lead-out area 33 is used to notify the disc reproducing apparatus of the end of reproduction.

Digital data corresponding to the application is stored in the volume area 33. The physical sector included in the volume area 32 is managed as a logical block. The logical block is identified by assigning consecutive numbers (logical block numbers) to the physical sectors following the 0th physical sector, with the first physical sector of the volume area 32 as 0th.

As shown in FIG. 3, the volume area 3
2 is further divided into a volume / file management area 32a and an audio zone area 32c.

The volume / file management area 32a stores file system management information for managing a plurality of logical blocks as files in accordance with ISO13346. The file system management information is information indicating the correspondence between each file name of a plurality of files and the address of the logical block group occupied by each file. The disc reproducing device realizes access to the optical disc in file units based on the file system management information. Specifically, the disc reproducing device refers to the file system management information,
The address of the logical block group corresponding to the given file name is acquired, and the logical block group is accessed based on this address. As a result, the desired digital data can be read.

An audio manager 900 and one or more audio title sets 800 are stored in the audio zone area 32c.

The audio title set 800 includes a plurality of audio data and management information for managing the reproduction order thereof. The audio title set 800 has a data structure for managing audio data in units called audio titles. An audio title typically corresponds to a music album that contains one or more songs.

(3) Data Structure of Audio Zone Area 32c The audio zone area 32c has an audio manager 900 and one or more audio title sets 800.
And are stored.

(3.1) Audio title set 80
0 Data Structure FIG. 5 shows a data structure of the audio title set 800. The audio title set 800 includes a plurality of audio objects (hereinafter referred to as AOB) 802.
And audio title set management information (ATSI) 801 that manages the playback order of the plurality of AOBs 802, and audio title set management information backup (ATSI_BUP) 804 that is backup data of the audio title set management information 801. In the following description, the audio title set may be abbreviated as ATS.

(3.1.1) Data Structure of AOB 802 The AOB 802 is packetized with 2 KBytes. AOB 802 has LPCM, AC3 or DT
S and other compressed data are stored. LPCM
In the case of, the sampling bit is any one of 16, 20, and 24 bits, and the sampling frequency is 48 kHz,
96kHz, 192kHz, 44.1kHz, 88.2
It is either of kHz and 176.2 kHz.

(3.1.2) Data Structure of Audio Title Set Management Information 801 The audio title set management information 801 is AOB8.
02, which includes information for managing the playback order. Designation of the playback order of the AOB 802 is performed by the program chain (PGC) as with the video object (VOB).
Different PGCs may define different playback orders for AOB 802.

As shown in FIG. 5, the audio title set management information (ATSI) 801 is the audio title set management table (ATSI_MAT) 811.
And PGC management information table (ATS_PGCIT) 8
12 and.

Audio title set management table 8
Reference numeral 11 is header information of the audio title set management information 801. The audio title set management table 811 stores a pointer indicating the storage position of the AOB 802, a pointer indicating the storage position of the PGC management information table 812, and attribute information of the AOB 802. When a still image is included, attribute information of the still image is stored.

PGC management information table (ATS_PGC
The IT) 812 includes audio title set PGC information table information (ATS_PGCITI) 831, a plurality of audio title set PGC information search pointers (ATS_PGCI_SRPs) 832, and a plurality of PGs.
C information (ATS_PGCI) 833.

The audio title set PGC information retrieval pointer (ATS_PGCI_SRPs) 831 is P
It is an index of a plurality of program chain groups stored in the GC management information table 812, and specifies PGC information to be executed first for each title.

Each PGC information describes a recording position of one or more audio objects on the disc and a reproduction order thereof, and reproduction of the same audio object can be described by different PGC information. PGC
Specifically, the information is "Audio title set PGC.
General information (ATS_PGC_GI) ”and“ Audio title set program information table (ATS_PG
IT) ”and“ audio title set cell reproduction information table (ATS_C_PBIT) ”.

FIG. 7 shows the data structure of PGC information.
As shown in FIG. 7, the “audio title set PGC comprehensive information (ATS_PGC_GI)” includes the number of programs included in the PGC information, the number of cells, the PGC playback time, and the “audio title set program information table (ATS_PGIT)”. And “Audio title set cell playback information table (ATS_C_PBI
T) ”and pointer information.

In the above "audio title set program information table (ATS_PGIT)", the AOB of each program and the program before it are stored.
"Program physical allocation information" that indicates whether or not it is recorded at physically discontinuous positions on the disc,
Similarly, "program time attribute information" indicating whether the time information with the previous AOB is continuous, "program start cell number" indicating the first cell number forming the program, and the program includes a still image. "Program still image flag" indicating whether or not it is present, "Playback start voice Cell time" indicating the first time information of the first audio cell included in the program, and "Program total playback" indicating the program playing time. "Time" and "Voice pause time" indicating the silent time until the start of reproduction of the voice cell of the program are described.

The "audio title set cell reproduction information table (ATS_C_PBIT)" stores the cell information constituting the reproduced AOB. Specifically, the "cell index number" indicating the order of cells included in the program, the "cell type" indicating whether the cell attribute is a still image cell, a silent cell, or a voice cell, or the start address of the cell It is composed of a "cell start address" described by a relative address from the first pack of the AOB of the included audio title set, and a "cell end address" similarly described by the address of the last pack of the cell.

FIG. 6 shows an example of the structure of the AOB. AO
B is a part of the MPEG2 stream, and is a set of audio cells consisting of a still image cell consisting of a still image pack, a silent cell consisting of an audio pack which is almost silent audio, and an audio pack of audio data forming a song. is there. The AOB is composed of one or more audio cells and may not include a still picture cell and a silence cell. The still picture cell and the silent cell are not continuous, and the still picture cell is always followed by the silent cell or the voice cell. Also, a voice cell always follows the silence cell. In FIG. 6, when there are voice cells and silence cells, they are physically continuous, and the time information is also continuous, that is, "program physical allocation information" is a value indicating "continuous", and "program time attribute information" ] Also indicates a case of “continuous”.

In the drawing of the AOB structure shown in FIG. 6, a change in the value of the time information (PTS) of the AOB is shown on the upper side of the drawing. Here, the point A is the PTS value of the first still image cell. Point B indicates the first PTS of the silent cell. Point C indicates the first PTS of the voice cell. In this way, the PTS of a silent cell is continuous with the PTS of a voice cell,
There is no gap between the silent cell and the voice cell in which data underflow occurs in the MPEG2 stream. B
Like a dot, the PT of a silent cell is
When S is large, it indicates that the still image of the still image cell is displayed before the reproduction of the silent cell is started. Similarly, the PTS of the next still image cell is indicated by point D, and the PTS of the silent cell is indicated by point E. As described above, when the PTS of the still image cell and the PTS of the silent cell are the same, it indicates that the reproduction start of the silent cell and the display of the still image are simultaneous. Also, the difference between the first PTS of the next voice cell at point F and the last PTS of the voice cell at point D is the "voice pause time". In addition, according to the MPEG2 regulations, the gap between PTSs must be 0.7 seconds or less. Therefore, in this figure, the first PTS of the silent cell at the point B and the PTS of the still image cell are shown.
The difference in TS, the difference between the PTS of the still image cell and the last PTS of the audio cell at point D, must satisfy this.

FIG. 9 shows an example of PGCs forming a title. In this example, there are five programs, programs # 1 and # 2 are AOB # 1, and programs # 3 and #
4 and # 5 are AOB # 2, and AOB # 1 is on the recording medium.
Is recorded after AOB # 2. Further, both the programs # 1 and # 2 are provided with a still image cell and a silent cell, and the program # 2 has two audio cells. The programs # 3 and # 4 have only silent cells, and the program # 5 has only voice cells.

All voice cells have a playback time of 60 seconds (PT
S is 5,400,000), the silent cell is 1 second (PTS 90,000), and the PTS of the still image cell is the same as the first PTS of the silent cell, the program information is described as shown in FIG. it can. In addition, the size of the still image data is approximately 1.88 Mbits, and the audio data is 48 kHz, 16
If the bit sampling is 2 ch, the number of packs of still image cells is 1 as described in the cell information of FIG.
There are 12 packs, the number of silence cells is 96, and the number of voice cells is 5760.

Now that the description of the audio title set has been completed, the audio manager will be described with reference to FIG.

(3.2) Data Structure of Audio Manager 900 The audio manager 900 is information for reproduction control that is first referenced when the optical disk is reproduced mainly by audio by the disk reproducing apparatus.

FIG. 4 shows the data structure of the audio manager 900.

The audio manager 900 includes "audio manager information (AMGI)", "VOB for audio manager menu (AMGM_VOBS)",
"Audio manager information backup (AMGI_
BUP) ”.

Furthermore, "Audio manager information (A
"MGI)" is an "audio manager information management table (AMGI_MA) that has attribute information and pointer information.
T) ”,“ audio title management information ”that describes the number of audio titles,“ audio title search pointer (ATT_SRP) ”that describes audio title search information, and PGC information for the audio manager menu. "Audio manager menu PGC management information table (AMGM
_PGCI_UT) ”.

Furthermore, the "audio title search pointer table (ATT_SRP)" has an "audio title type" that describes the type of each title, "the number of programs in the title" that describes the number of programs included in the title, and the reproduction of the title. "Title playback time" that describes the time, "Audio title set number" that describes the number of the audio title set to which each title belongs, "ATS title number" that describes the title number in the audio title set of each title And "ATS address" that describes the address of the audio title set to which each title belongs.

With the above, the description of the audio zone area and the description of the DVD, which is a multimedia optical disk, are completed, and then the reproducing apparatus will be described.

First, the appearance of a DVD player, which is a reproducing apparatus for multimedia optical disks, will be described. FIG. 19 is a diagram showing appearances of the DVD player 1, the television monitor 2, and the remote controller 91.

The DVD player 1 has an opening in the front surface of its housing, and a drive mechanism for setting an optical disk is provided in the depth direction of the opening.

On the front surface of the DVD player 1, there is provided a remote controller receiving section 92 having a light receiving element for receiving infrared rays emitted from the remote controller. When the operator operates the remote controller, the remote controller receiving section is provided. 92 issues an interrupt signal indicating that the key signal has been received.

Furthermore, on the back of the DVD player 1,
A video output terminal and an audio output terminal are provided. By connecting an AV code here, a video signal reproduced from a DVD can be output to a large-sized television monitor 2 for home use. This gives the operator 33 inches,
You can enjoy the playback image of DVD on a 35-inch home TV. As can be understood from the above description, the DVD player 1 of the present embodiment is not used by being connected to a personal computer or the like, but is used together with the television monitor 2 as a household electric appliance.

The remote controller 91 is provided with a spring-biased keypad on its housing surface, and outputs a code corresponding to the pressed key by infrared rays. FIG. 20 shows an operation panel of the operation remote controller 91. In this panel, "PO
WER key is for turning on / off the power of the DVD player 1.
It is to perform F. The "MENU" key is used for calling the volume menu of the optical disc during the reproduction of the program chain. The numeric keypad is used for chapter jump in movies, song selection in music, and the like. The up / down / left / right cursor keys are used to select items. The "ENTER" key is used to confirm the item selected by the cursor. When you move the cursor on the item with the up / down / left / right cursor keys, the item with the cursor is displayed in the selected color of the item color information of the management information pack.
If you confirm it with the key, it will be displayed in the confirmed color. In addition, keys common to other AV devices such as "play", "stop", "pause", "fast forward", and "rewind" keys are prepared.

Next, the structure of a DVD player which is a reproducing apparatus for multimedia optical disks will be described.

FIG. 8 is a block diagram showing the internal structure of the DVD player 70 in this embodiment. DVD
The player 70 includes a drive mechanism 81, an optical pickup 82, a mechanism controller 83, a signal processor 84, an AV decoder 85, a remote controller receiver 92, and a system controller 93.

The drive mechanism 81 comprises a base for setting the optical disc and a spindle motor for clamping and rotating the set optical disc. The base on which the optical disc is set is configured to move back and forth in and out of the housing by an eject mechanism (not shown).
The operator mounts the optical disk with the base moved to the outside of the housing. When the optical disc is mounted on the base and the base moves inside the DVD player 70, the optical disc is loaded on the DVD player 70.

The mechanism control section 83 controls a mechanism system including a motor 81 for driving the disc and an optical pickup 82 for reading out signals recorded on the disc. Specifically, the mechanism control unit 83 adjusts the motor speed according to the track position instructed by the system control unit 93. At the same time, the pickup position is moved by controlling the actuator of the optical pickup 82, and when an accurate track is detected by servo control, rotation waiting is performed until a desired physical sector is recorded, and the desired physical sector continues. Read out the signal.

The signal processing section 84 amplifies, waveform-shapes, binarizes, demodulates the signal read from the optical pickup 82,
Processing such as error correction is performed and converted into a digital data string, which is stored in a buffer memory (described later) in the system control unit 93 in logical block units.

The AV decoder section 85 receives the input VOB.
The digital data is subjected to a predetermined process and converted into a video signal or an audio signal. Specifically, A
The V decoder unit 85 further includes a system decoder unit 8
6, a video decoder 87 and an audio decoder 88 are included.

The system decoder unit 86 receives the digital data string transferred in units of logical blocks (packets) from the buffer memory, and discriminates the stream ID and substream ID in the header of each packet. , Audio data packs, management information packs are distributed. In this distribution, the moving image data pack is output to the video decoder 87. Regarding the audio data pack, only the audio data pack having the specified stream number is in accordance with the decode stream specification instruction input from the system control unit 93, and the audio decoder 8 for AV decoder 8
8 is output. The management information pack is output to the system controller 93. The moving picture data pack input to the video decoder 87 is decompressed according to a predetermined system defined by MPEG2, output as digital video data, converted into an NTSC system video signal, and output to the outside. The audio data input to the AV decoder audio decoder 88 is decoded by the LPCM or AC3 method according to the data type, D / A converted, and output as an audio signal to the outside.

The audio decoder section 94 performs a predetermined process on the inputted digital data which is AOB according to the data type, converts it into an audio signal and outputs it to the outside.

The system control section 93 includes a work memory and
The DVD player 70 is configured by integrating with a CPU.
Take overall control.

The operation of the disc reproducing apparatus of the present embodiment configured as described above will be described below.

The DVD optical disc is the DVD player 70.
When it is loaded in the optical disc, the system control unit 93 detects the loading of the optical disc from an optical sensor or the like. System control unit 9
When detecting loading of the optical disk, the disk drive 3 controls the rotation of the disk by controlling the mechanism control section 83 and the signal processing section 84, and causes the optical pickup 82 to seek the lead-in area. As a result, the DVD player 70 is initialized and the reproduction is started.

At the start of reproduction, the system control unit 93 determines whether or not the reproduction mode determination unit is in the image-centered reproduction mode. If it is determined that the playback mode is video-centered, the video manager is read based on the information read from the volume / file management area. The system control unit 93 is a PGC for the menu of the video manager.
The recording address of the program chain for the volume menu is calculated with reference to the management information table, and this is reproduced and held internally. If the program chain for the volume menu is held inside, the system control unit 93
Calculates the video object (VOB) to be reproduced and the recording address on the optical disk by referring to the held PGC information. When the video object to be reproduced is determined, the system control unit 93 causes the mechanism control unit 8
3, the control signal is output to the signal processing unit 84, and the determined video object is taken out from the optical disc and reproduced. As a result, a video menu for allowing the user to select the title to be reproduced is displayed.

It is assumed that the operator looks at this video menu and selects and confirms the menu item that the operator is interested in. That is, it is assumed that the number of any menu item is designated by the remote controller. Upon receiving the designation of the menu item number from the remote controller, the system control unit 93 refers to the management information pack included in the VOB of the video menu being reproduced, which is input from the AV decoder unit 85, and sets the designated number. Execute the corresponding control command. Control command is Pla
yTitle #n or the like, and n designates the title number to be reproduced. As the execution operation by the PlayTitle command, the system control unit 93 refers to the title search pointer table which is a part of the audio manager, and refers to the audio title set (A
TS) and the title number in ATS are determined. When the audio title set is confirmed, the system control unit 9
3 outputs a control signal to the mechanism control section 83 and the signal processing section 84, reproduces the audio title set management information of the confirmed title set, and is an audio title set section title search pointer table which is a part of the audio title set management information. Take out inside. If the title search pointer table of the video title set section can be taken out, the system control section 93 refers to this and refers to the PG of the program chain for starting the reproduction of the title to be reproduced.
Determine C information. When the PGC information is determined, the system control unit 93 outputs a control signal to the mechanism control unit 83 and the signal processing unit 84, reproduces the determined PGC information, and holds this in the internal PGC information buffer. . If the PGC information for starting playback of the title is held, the system control unit 93 refers to the held PGC information, determines the audio object to be played and its recording address, and plays back the decided video object. A control signal is output to the mechanism control unit 83 and the signal processing unit 84 to perform it.

Thereafter, the system control section 93 holds the stored P
According to the GC information, audio objects to be reproduced are sequentially determined and reproduction control is performed. The system control unit 93 is P
When the reproduction of the final audio object indicated by the GC information is completed, the PGC information of the next title is searched for, and the audio object described in the PGC information is reproduced in the same manner. In this way, all the titles are reproduced and the process ends. In this case, depending on the settings of the player or the disc, the reproduction of one title may end, the reproduction of the title may end, or a menu may be displayed.

Next, a method of reproducing a still picture cell, a silent cell and a voice cell will be described in detail.

FIG. 14 is a diagram showing a conventional voice cell reproducing method. Conventionally, in the case of reproducing such an MPEG2 stream, first, seeking to the head of the audio cell pack and starting to read the data, audio output cannot be started immediately, and a certain reproduction device is used. Audio output is started after the idle time determined in step 1 has elapsed. This idle time is the time until the PTS of the audio data is determined, the time until it is determined that the audio data is correct,
The time required for the muting circuit of the analog output unit to transit from the muting state to the non-muting state is included, and is a different value for each playback device. In particular, if the disk reproducing device part and the decoder part are separate housings, PT
This idle time tends to be long because the determination of S and the determination that the audio data are correct are made independently.

12A and 12B are diagrams showing a reproducing method in the case of reproducing only audio without displaying a still image even if there is a still image cell. FIG. 12A shows a case of reproducing from the beginning, and FIG. 12B shows a method of continuously reproducing from the previous voice cell.

When a title or a program is selected from the beginning or from a menu or the like to jump and reproduce, the first pack of a silent cell is jumped by referring to the start address of the cell information. At this time, the STC which is the reference time of the decoder is set to the SC of the first pack of the silent cell.
Set with R. Next, for a predetermined idle time, data skip and jump are performed while watching the PTS of the silent cell, and the silent time for the idle time is reproduced. During this period, audio output is prepared, but at this time, the next title number is not displayed on the display device of the playback device, and the playback elapsed time is not updated. As soon as the PTS at the beginning of the voice cell is detected, voice output is started, the title number is displayed, and the playback elapsed time is updated, so that the voice is output as soon as the jump such as menu selection is finished. The playback device will behave. When continuing reproduction from the previous audio cell, the still image pack is jumped, and the silent cell is also jumped or skipped so as to leave an idle time. At this time, if the STC serving as the reference of the system time is kept counting, the interval from the voice completion of the previous voice cell to the voice output of the next voice cell becomes equal to the voice pause time. However, the STC count continues when both the physical allocation information and the time attribute information have values indicating "continuous". When either of them indicates "discontinuous", the jump from the menu is performed. The STC is reset at the beginning of the silent cell pack. This method is almost the same even when there is no still image cell. When there is no silent cell and the reproduction is performed from the beginning, it becomes the same as the conventional case of FIG. If the time attribute information indicates "continuous" when playing back from the previous voice cell, the voice cell is decoded as it is after the previous voice cell,
Output audio. When the time attribute information indicates "discontinuous", the process becomes the same as that of the related art shown in FIG. 14 as in the case of reproducing from the beginning.

13A and 13B show a case where a still image is displayed and audio is reproduced. FIG. 13A shows a case of reproducing from the beginning, and FIG. 13B shows a method of continuously reproducing from the previous voice cell.

When reproducing from the beginning or when jumping by selecting from a menu or the like, first, a seek is made to a pack of still picture cells from the cell information, the still picture cells are read, and the still picture is decoded. At this time, the SCR of the pack at the beginning of the still image cell is S which is the reference time of the decoder.
Set TC. Next, the head pack of the silent cell is read. If the STC becomes the STC of the still image cell,
Display a still image. The rest is the same as without a still image.
The display of the still image may be within the range permitted by the MPEG2 standard, during the processing of the silent cell, or at the same time as or after the start of the output of the audio cell. When playing back continuously from the previous audio cell, when it becomes a still image pack,
Reads and decodes still image cells. Next, a silent cell is processed, but as with the case where there is no still image, the presence or absence of the STC set differs depending on the time attribute information. The subsequent processing is the same as when there is no still image display, but the still image is displayed when the STC becomes the PTS of the still image cell and the STC is set to the SC of the pack at the beginning of the still image cell.
The difference is that it is performed in R.

15 to 18 are flowcharts showing a method of reproducing one of the programs. If the physical allocation information of the program information indicates "continuous" and the previously reproduced program has a program number that is one less than the program to be reproduced, it is not necessary to seek the read head of the disk. Further, when the time attribute information indicates "continuous", it is not necessary to reset the STC which is the reference time of the decoder when continuously reproducing from the previous program.

Further, the determination as to whether or not it is a still picture cell can be made by using the cell type of the cell information or by using the still picture flag of the program information. The silent cell is determined by the cell type of cell information. The final determination of the cell is made by comparing the end address of the cell information with the read address of the data from the disc. The end of the program reproduction can be determined by the cell index of the cell information returning to 0 or by the cell type being a still picture cell or a silent cell, or by the start cell number of the program next to the program information.

The skipping of the silent cell is performed while detecting the PTS at the time of decoding the silent cell or by skipping by obtaining the number of packs to be skipped from the data rate.

As described above, according to the first embodiment, MP
Since the program reproduction information describing the start time and reproduction time of each audio data based on the reproduction start time of the first audio data of the EG2 stream is recorded in the management area as a part of the reproduction control information, high quality is achieved. It is possible to provide a multimedia recording medium capable of reproducing by adding video data to the digital audio data of, under a limited bit rate, and an inexpensive reproducing device,
Even with a playback device that does not have a video data playback function, the audio playback interval can be made constant, and the title creator can easily create data.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to the drawings. In the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. (1) Physical structure of optical disc Since it is the same as that of the first embodiment, it is omitted. (2) Logical structure of optical disc Since it is the same as that of the first embodiment, it is omitted. (3) Data Structure of Audio Zone Area 32c The audio zone area 32c includes an audio manager 900 and one or more audio title sets 800.
And are stored. This is the same as in the first embodiment.
However, the data structure of the audio manager 900 and the data structure of the audio title set 800 are different from those in the first embodiment.

(3.1) Audio title set 80
Data Structure of 0 FIG. 23 shows a data structure of the audio title set 800. The audio title set 800 includes a plurality of audio objects (hereinafter referred to as AOB) 802.
And a plurality of picture video objects (hereinafter P_
VOB) 1002, audio title set management information (ATSI) 801 that manages the playback order of a plurality of AOBs 802 and a plurality of P_VOBs, and audio title set management information backup (ATSI_BUP) that is backup data of the audio title set management information 801. And 804. In the following description, the audio title set is abbreviated as ATS.

(3.1.1) Data structure of AOB 802 Since it is the same as the first embodiment, the description thereof is omitted.

(3.1.2) Data Structure of P_VOB 1002 FIG. 31 shows the data structure of P_VOB 1002. P
_VOB 1002 is a picture NV pack (P_NV
_PCK) 1003 and video pack (V_PCK) 1
004 and a sub-picture pack (SP_PCK) 1005.

Unlike the DVD-Video, only one picture video object unit (P_VOB
U) and there is only one P_NV_PCK.

The sub-picture pack (SP_PCK) can describe a plurality of sub-picture streams and has a code for identification, like the DVD-Video. SP_PCK may be omitted.

Unlike DVD-Video, P_VOB does not include audio data. P_NV_PCK is P_
PCI and P_DSI are the PCI and P of DVD-Video
_ Have the same age as DSI.

As shown in FIG. 41, in the P_PCI, the P_VOBU to which it belongs, that is, the attribute information of the P_VOB, the reproduction time information, the highlight information and the like are recorded on the DVD-Vi.
Like deo, it has no address information.

Further, as shown in FIG. 42, P_DSI
The SCR of the NV_PCK to which it belongs, the end address of the P_VOBU to which it belongs, that is, the end address of the P_VOB, and the address information of the pack in which the last data of the first I picture of the video pack (V_PCK) exists, are recorded on the DVD-V
It has the same as video, but not the others.

(3.1.3) Data Structure of Audio Title Set Management Information 801 The audio title set management information 801 contains AOB.
Information for managing a plurality of reproduction orders of the 802 group and the P_VOB1002 group is stored. Note that the playback order of the AOB 802 group is designated by the program chain (PGC) like the video object.

Audio title set management information 801
The data structure of is similar to that shown in FIG. 5, except for the data structure of PGC information 833.

Each PGC information describes a recording position of one or more audio objects on the disc and a reproduction order thereof, and reproduction of the same audio object can be described by different PGC information. PG
Specifically, the C information is “audio title set PG
C comprehensive information (ATS_PGC_GI) ”and“ audio title set program information table (ATS_P
GIT) "," Audio title set cell playback information table (ATS_C_PBIT) "and" Audio title set picture program information table (AT
S_PPGIT) "and" Audio title set picture cell playback information table (ATS_PC_PBI
T) ”.

FIG. 25 shows the data structure of PGC information. As shown in FIG. 25, “audio title set PGC comprehensive information (ATS_PGC_GI)” includes the number of picture programs, the number of audio programs, the number of cells, the PGC reproduction time, and the picture program reproduction mode included in the PGC information. And picture program reproduction control, "audio title set program information table (ATS_PGIT)" and "audio title set cell reproduction information table (ATS_C_PBI)
T) ”,“ audio title set picture program information table (ATS_PPGIT) ”, and pointer information to“ audio title set picture cell reproduction information table (ATS_PC_PBIT) ”.

In the "audio title set program information table (ATS_PGIT)" described above, P
A plurality of “voice program information (ATS_
PGI) ”is described, and each“ audio program information (ATS_PGI) ”indicates whether or not the audio program and the AOB of the previous audio program are recorded at physically discontinuous positions on the disc. "Voice Program Physical Allocation Information", as well as the previous AO
"Voice program time attribute information" indicating whether the time information with B is continuous or "Voice program start cell number" indicating the first cell number forming the voice program
Or "reproduction start voice cell time" indicating the first time information of the first voice cell included in the voice program,
The “voice program total playback time” indicating the playback time of the voice program and the “voice pause time” indicating the silent time until the playback start of the voice cell of the voice program are described.

The "audio title set cell reproduction information table (ATS_C_PBIT)" stores the cell information which constitutes the reproduced AOB. This is the same as in the first embodiment.

[Audio title set picture program information table (ATS_PPGIT)]
Has a plurality of "audio title set picture program information". Each "audio title set picture program information" is a used SP number (PPG_SP_STN) that describes the stream number of the sub-picture used in this picture program, and a button in the highlight information used in that picture program. , An initial button number (PPG_FOSL) indicating the button number selected in the initial state, a picture transition mode (PPG_T_mode) indicating the still image transition mode of this program, and a still image identification indicating the ISRC code of the still image of this program Code (PPG_I
SRC_SPCT), a picture cell start PT indicating the PTS of the first pack of picture cells for this program
S (PC_S_PTM), picture program playback time (ATS_PPG_) which is the playback time of this program
PB_TM), the start portion transition time (PPG_TI_T) indicating the transition time at the start of reproduction of the still image of this program.
M), the end transition time (PPG_TO_TM) indicating the transition time at the end of the reproduction of the still image of this program is described.

In the present embodiment, as the picture transition mode, "no transition", "fade from black", "fade to black", "crossfade", and "wipe for each direction" are assumed. is doing. Further, each program is composed of one cell, and each cell has an independent P_VOB, so that the picture program reproduction time is one frame time.

[Audio title set picture cell reproduction information table (ATS_PC_PBIT)]
Is the cell still time (P_C_Still_Time) indicating the display duration of the picture cell and the start address (P_C_FVOB) of the picture program cell.
U_SA) and an end address (P_C_LVOBU_SA) indicating the address of the last packet of the cell, FIG. 24 shows an example of the configuration of the AOB. AOB is MPE
It is a part of the G2 stream, and is a set of a silent cell composed of a sound pack which is a substantially silent sound, and a sound cell composed of a sound pack of sound data constituting a song. AOB
Is composed of one or more voice cells and may not include silence cells. The silent cells are not continuous, and the silent cell is always followed by the voice cell. Figure 2
In 4, when there are voice cells and silence cells, they are physically continuous and the time information is also continuous, that is, "voice program physical allocation information" is a value indicating "continuous",
The case where "voice program time attribute information" is also "continuous" is shown.

In the drawing of the AOB structure shown in FIG. 24, the change in the value of the time information (PTS) of the AOB is shown on the upper side of the drawing. Here, point B is the first P of the silent cell.
Indicates TS. Point C indicates the first PTS of the voice cell. As described above, the PTS of the silent cell is continuous with the PTS of the voice cell, and there is no gap between the silence cell and the voice cell in which data underflow occurs in the MPEG2 stream. Similarly, the PTS of the next silent cell is indicated by point E. Also, the difference between the first PTS of the next voice cell at point F and the last PTS of the voice cell at point D is the "voice pause time". Also, according to the MPEG2 regulations, PTS
Needs to be continuous in the same stream, so that the PTS changes linearly as shown in this figure.

The picture video object (P_VOB) will be described in detail with reference to FIGS. 31, 41 and 42. As mentioned above, the beginning of P_VOB is the time information,
It is a picture NV pack (P_NV_PCK) having a P_PCI packet and a P_DSI packet that have position information and highlight information. This P_NV_PCK
Is always present at the beginning of P_VOB. After that, V_PCK, which is an MPEG2 video pack that stores video data, and a sub-video pack (SP_PC) that stores a sub-video stream that allows up to 32 sub-streams
K) continues. In this figure, two sub-picture streams (S
P # 1 and SP # 2) exist and are divided into two packs, respectively. In this figure, V_PC
Although K is preceded, there is no limitation on the order of V_PVK and SP_PCK as long as the specifications of MPEG2 are satisfied.
Further, although a termination code such as a program encode is not shown in the figure, such a termination code may exist as long as the MPEG2 stream regulation is satisfied, and P_VOB is MP.
It may not be present because it is part of the EG2 program stream.

FIG. 41 shows the structure of P_PCI information described in the P_PCI packet. For P_PCI, P_
PCI general information, P_PCI highlight information, P_PC
I record information is included. The P_PCI general information describes the type of analog copy protection for the video data of this P_VOBU, and the P_VOBU type (P
_VOBU_CAT), a P_VOBU describing the PTS of the first displayed video contained in this P_VOBU
Start time (P_VOBU_S_PTM), this P_VO
P_VOBU end time (P_VOBU_E_PT) that describes the PTS of the last displayed video contained in the BU
M), P where the SEQ existing in this P_VOBU exists
P_VOBU_SEQ time (P_VOB) that describes TS
U_SE_E_PTM), a P_VOBU cell playback time (P_VOBU_C_ELT) that indicates the relative time within the picture cell of the first displayed video of this P_VOBU.
M). The P_VOB is always an I picture of 1 VOBU, 1 cell, and 1 video frame, and since SEQ always exists, P_VOBU_S_PTM and P_VOB
U_E_PTM and P_VOBU_SE_E_PTM have the same value, and P_VOBU_E_ELTM indicates 0.

The P_PCI highlight information includes P_PCI highlight general information (P_PCI_HL_GI) describing the start and end times of the highlight information, the number of buttons, the initial selection button number, the forced execution button number, and the color information of the button. P_PCI button color information table to describe (P_BTN_COLIT), button coordinates, size,
It has a P_PCI button information table (P_BTNIT) that describes an operation mode and the like. As mentioned above, P_V
Since the OBU is composed of one video frame, the highlight start time is described as 0 and the end time is described as infinity.

Further, the P_PCI record information is the P_V
P_PCI describing ISRC code of OBU video
Video ISRC code (P_ISRC_V), P_PCI sub-picture IS which also describes ISRC code of sub-picture
It has an RC code (P_ISRC_SP).

FIG. 42 shows the structure of P_DSI information described in the P_DSI packet. P_DSI is P_DS
I general information (P_DSI_GI) only. The P_DSI general information contains the NV of this P_VOBU.
P_VOB that describes the lower 32 bits of the pack's SCR
U_NV pack time (P_NV_PCK_SCR), P_VOBU end address describing the relative address from the NV pack of the last pack of this P_VOBU, this P
P_VOBU first reference address (P_VOBU) that describes the relative address from the NV pack of the pack that contains the last data of the first I-picture of the video of _VOBU
_1STREF_EA) is included. P_VOBU is
Since it consists of 1 VOBU, P_NV_PCK_
SCR is always 0.

FIG. 29 shows PGC, audio program, cell, picture program, picture cell, AOB,
The relationship of P_VOB is shown. The whole figure shows one PGC. There are a plurality of such PGCs in the ATS. As described above, in the PGC, a sound program group that describes the reproduction order in units of sound data access,
A picture program group that describes the playback order is described for each access unit of video data. Each voice program is Cel, which is the smallest management unit.
has l. Cell is the actual audio data AOB
Point to determine the playback data. Similarly, the picture program also has a picture cell, which points P_VOB, which is the actual video data, and determines the reproduction content.

With such a structure, the actual reproduction data may be recorded on the disc in different orders, and the same data may be pointed by a plurality of cells or picture cells. However, in order to guarantee the continuity of reproduction of the audio data, a flag indicating whether the physical layout on the disk is continuous or a continuous portion of the same AOB (audio program physical allocation information, audio program time). Attribute information). Since the video data is based on a still image, one program is one cell and one cell is one P_V.
It does not have such a flag because it is composed of OBs and its physical layout does not matter.

FIG. 30 shows an example of PGCs forming a title. In this example, there are five audio programs, audio programs # 1 and # 2 are AOB # 1, audio programs # 3, # 4 and # 5 are AOB # 2, and AOB # 1 is on the recording medium. It is supposed to be recorded after AOB # 2. Further, both the voice programs # 1 and # 2 are provided with silent cells, and the voice program # 2 has two voice cells. Audio program #
3 and # 4 have silence cells, and program # 5 is only voice cells.

All voice cells have a playback time of 60 seconds (PT
S is 5,400,000) and the silent cell is 1 second (PTS is 90,000).
It can be described as shown in. Similarly, picture program information can be described as shown in FIG. Also, the audio data is 48kHz, 2ch with 16-bit sampling.
Then, as described in the cell information of FIG. 34,
The number of silent cell packs is 96, and the number of voice cells is 5,760. If the number of still image packs is 50, the picture cell information is as shown in FIG. In this case, P used in this picture cell
It is assumed that _VOB is recorded at the position following AOB. There is no restriction on the physical recording positions of P_VOB and AOB, and there is no particular problem even if they are mixed. In such a case, the physical allocation information of the voice program information is N
By becoming o-Continue, it indicates that the AOB designated by the audio program cannot be continuously reproduced. Further, both the voice cell and the picture cell share the AOB and P_VOB used in other cells.

The audio title set has been described above, and then the audio manager will be described with reference to FIG.

(3.2) Data Structure of Audio Manager 900 The audio manager 900 is information for reproduction control that is first referenced when the optical disk is reproduced mainly by audio by the disk reproducing apparatus.

FIG. 22 shows the data structure of the audio manager 900.

The audio manager 900 is composed of "audio manager information (AMGI)", "VOB for audio manager menu (AMGM_VOBS)",
"Audio manager information backup (AMGI_
BUP) ”. This is the same as in the first embodiment.

Furthermore, "Audio manager information (A
"MGI)" is an "audio manager information management table (AMGI_MA) that has attribute information and pointer information.
T) ”,“ audio title management information ”that describes the number of audio titles,“ audio title search pointer (ATT_SRP) ”that describes audio title search information, and PGC information for the audio manager menu. "Audio manager menu PGC management information table (AMGM
_PGCI_UT) ”. This is also the first embodiment
It has the same configuration as.

Further, the "audio manager information management table (AMGI_MAT)" is an AMG identifier (AMG_ID) for identifying the audio manager,
AMG end address (AMG_EA), which is the end address for managing the table, and AMGI end address (AMG
I_EA), AMGI_MAT end address (AMGI
_MAT_EA), address information of other AMG and AMGI tables, version number (VERN), volume set identifier (VLMS_ID), title set number (TS_Ns) indicating the number of title sets included in the volume, and the provider that created the disc. A provider identifier (PVR_ID) for identifying, an automatic execution flag (Auto_Play_Flag) that defines the operation of the player when the disc is inserted, and attribute information of the VOB existing in the audio manager are described.
And MGM_VOBS attribute information.

The structure of the "audio title search pointer table (ATT_SRP)" is the same as that of the first embodiment.

With the above, the description of the audio zone area is completed, and a DVD, which is a multimedia optical disk, is described.
After that, the reproducing apparatus for reproducing the recorded contents of the medium having the above-described structure will be described.

The basic structure of the reproducing apparatus is the same as that of the first embodiment.
As described above, the remote controller for operating the DVD player or the front panel of the DVD player is provided with a key for separately controlling audio data and video data, which is a unique function of the second embodiment. . This is a key for skipping back and forth the video data or returning to the first video data while continuing the reproduction of the audio data.

FIG. 26 is a block diagram showing the internal structure of the DVD player 80 according to the present embodiment. DV
The D player 80 differs from the DVD player 70 shown in FIG. 8 in the structure of the AV decoder section. After that, A
The configuration of the V decoder section will be described.

In this embodiment, there are AOB which is audio data and P_VOB which is mainly video data as a stream. Therefore, the AV decoder unit 85a has two decoders corresponding to each, and is configured to operate these in synchronization or asynchronously. Specifically, the AV decoder 85a receives the stream of P_VOB, and determines the stream ID and substream ID in the header of each packet of each stream constituting the P_VOB to determine the video pack, PCI, and sub-picture packet. P_VOB system decoder unit 1 for distribution
AOB that receives 03, AOB stream and distributes data by the packet header of this stream
Buffer decoder 94 for temporarily storing the highlight information of the PCI packet from the system decoder unit 104 for P_VOB, the video buffer 96 for temporarily storing the video packet, and the temporary buffer for the sub-picture packet. Sub-picture buffer 105, A
The audio buffer 99 for temporarily storing the audio packet from the OB system decoder unit 104 and the highlight data from the highlight buffer 94 are decoded,
A highlight decoder 95 for outputting the decoded highlight information to the system controller 93, a video decoder 87 for decoding the video data from the video buffer 96,
Sub-picture decoder 98 for decoding sub-picture data from sub-picture buffer 105, audio decoder 100 for decoding audio data from audio buffer 99 and outputting as audio output, video decoder 87
And a synchronization adjusting unit 102 that manages the synchronization of the operations of the video composition 101, the highlight decoder 95, the video decoder 87, the sub-video decoder 98, and the audio decoder 100 that combine the decoding results of the sub-video decoder 98 into one video data. including.

The operation of the disc reproducing apparatus of this embodiment having the above-mentioned configuration will be described below. The process up to the reading of the stream is the same as in the first embodiment, and will be omitted.

At the start of reproduction, the system control unit 93 determines whether or not the reproduction mode determination unit is in the image-centered reproduction mode. If it is determined that the playback mode is video-centered, the video manager is read based on the information read from the volume / file management area. The system control unit 93 is a PGC for the menu of the video manager.
The recording address of the program chain for the volume menu is calculated with reference to the management information table, and this is reproduced and held internally. If the program chain for the volume menu is held inside, the system control unit 93
Calculates the video object (VOB) to be reproduced and the recording address on the optical disk by referring to the held PGC information. When the video object to be reproduced is determined, the system control unit 93 causes the mechanism control unit 8
3, the control signal is output to the signal processing unit 84, and the determined video object is taken out from the optical disc and reproduced. As a result, the video menu for allowing the user to select the title to be reproduced shown in FIG. 40 is displayed.

It is assumed that the operator sees this video menu and selects and confirms the menu item that the operator is interested in. That is, it is assumed that the number of any menu item is designated by the remote controller. The system control unit 93, which has received the designation of the menu item number from the remote controller, at this time, inputs the VOB of the video menu being reproduced, which is input from the AV decoder unit 85a.
Execute the control command corresponding to the specified number by referring to the management information pack included in. Control command is Pl
aTitle #n or the like, and the title number to be reproduced is designated by n. As the execution operation by the PlayTitle command, the system control unit 93 refers to the title search pointer table which is a part of the audio manager, and determines the audio title set (ATS) to which it belongs and the title number in the ATS. When the audio title set is determined, the system control unit 93 outputs a control signal to the mechanism control unit 83 and the signal processing unit 84, reproduces the audio title set management information of the determined title set, and outputs the audio title set management information. The audio title set part title search pointer table, which is a part, is taken out internally. If the title search pointer table of the audio title set section can be retrieved, the system control section 93 refers to this and determines the PGC information of the program chain for starting the reproduction of the title to be reproduced. When the PGC information is determined, the system control unit 93 outputs a control signal to the mechanism control unit 83 and the signal processing unit 84, reproduces the determined PGC information, and holds this in the internal PGC information buffer. . If the PGC information for starting the reproduction of the title is held, the system control unit 93 first refers to the held PGC information, first refers to the audio title set picture program information table, and writes all the PGC information described in this PGC information. P_VOB is read from the disk and input to the AV decoder unit 85a. The AV decoder unit 85a is
The input P_VOB is separated into each pack and packet by the P_VOB system decoder unit 103 and stored in the corresponding buffer.

At this point, the highlight decoder 95,
The video decoder 87 and the sub-picture decoder 98 do not perform the decoding operation. When all P_VOBs have been stored in the corresponding buffers, the audio object to be reproduced and its recording address are determined by the audio title set program information table and the audio title set cell reproduction information table, and the determined AO
The reproduction of B is performed by outputting a control signal to the mechanism control unit 83 and the signal processing unit 84. At this point, the first video, sub-picture, and highlight are decoded, and video output, highlight processing, and audio output are started. The output timing is based on the audio program information, the picture program information, the highlight information, and the time code information (PTS) of each packet.
To adjust.

As described above, in order to store all the data of the corresponding picture program group in the corresponding buffer before the reproduction of the audio data, the highlight buffer 94, the video buffer 96, the sub buffer of the second embodiment, The video buffer 105 is MPEG2 or DVD-Video.
A buffer larger than the buffer capacity specified in is required.

Thereafter, the system control section 93 holds the stored P
According to the GC information, audio objects to be reproduced are sequentially determined and reproduction control is performed, and the highlight information, sub-picture information and video information already read in the buffer are decoded. Then, the system control unit 93
When the reproduction of the final audio object indicated by the GC information is completed, the PGC information of the next title is searched, and similarly P_VOB and the audio object described in the PGC information are reproduced.

In this way, all the titles are reproduced and the process ends. In this case, depending on the setting of the player or the disc, one title may end to be reproduced, or the title may end to be reproduced and then a menu may be displayed.

Next, a method of reproducing the picture cell, the silent cell and the voice cell will be described in detail.

FIG. 14 is a diagram showing a conventional method of reproducing a voice cell. Conventionally, when reproducing such an MPEG2 stream, first, the head is moved to the beginning of the audio cell pack to seek and start reading data, but audio output cannot be started immediately. The audio output is started after an idle time determined for each certain playback device has elapsed. This idle time is PT of voice data
This includes the time until S is determined, the time until it is determined that the audio data is correct, and the time until the muting circuit of the analog output section is changed from the muting state to the non-muting state, Different values. In particular, when the disc reproducing device portion and the decoder portion are in different housings, the PTS determination and the determination that the audio data are correct are performed independently, so the idle time tends to be long.

FIGS. 36A and 36B are diagrams showing a reproducing method for reproducing a silent cell and a voice cell. Figure 3
6A shows a case of reproducing from the beginning, and FIG. 36B shows a method of continuously reproducing from the previous voice cell.

When a title or a program is selected from the beginning or from a menu or the like to jump and reproduce, the first pack of the silent cell is jumped by referring to the start address of the cell information. At this time, the STC which is the reference time of the decoder is set to the SC of the first pack of the silent cell.
Set with R. Next, for a predetermined idle time, data skip and jump are performed while watching the PTS of the silent cell, and the silent time for the idle time is reproduced. During this period, audio output is prepared, but at this time, the next title number is not displayed on the display device of the playback device, and the playback elapsed time is not updated. As soon as the PTS at the beginning of the voice cell is detected, voice output is started, the title number is displayed, and the playback elapsed time is updated, so that the voice is output as soon as the jump such as menu selection is finished. The playback device will behave.

On the other hand, when continuously reproducing from the previous voice cell, the silent cell is jumped or skipped so as to leave an idle time. At this time, if the STC serving as the reference of the system time is kept counting, the interval from the voice completion of the previous voice cell to the voice output of the next voice cell becomes equal to the voice pause time. However, ST
The counting of C is continued when both the physical allocation information and the time attribute information have values indicating "continuous". When either of them indicates "discontinuous", it is the same as the jump from the menu. Then, the STC is reset at the beginning of the silent cell pack. When there is no silent cell and the reproduction is performed from the beginning, it becomes the same as the conventional case of FIG. When playing continuously from the previous audio cell, the time attribute information is "continuous"
Indicates that the voice cell is decoded as it is and the voice is output following the previous voice cell. When the time attribute information indicates "discontinuous", the process becomes the same as that of the related art shown in FIG. 14 as in the case of reproducing from the beginning.

FIGS. 37 to 38 and 39 are flowcharts showing a method of reproducing one of the programs. Since the P_VOB information is read in the corresponding buffer in advance, the reproduction of audio data, the processing of highlight information, and the output of a still image and a sub-image can be performed asynchronously. Of course, it is also possible to perform the synchronous display based on the time code or the time information that the system has.

In the reproduction of the audio information, when the physical allocation information of the audio program information indicates "continuous", and the previously reproduced audio program has an audio program number one less than the audio program to be reproduced,
It is not necessary to seek the read head of the disk. If the time attribute information indicates "continuous",
When continuously reproducing from the previous audio program, it is not necessary to reset STC which is the reference time of the decoder.

The silent cell is judged by the cell type of the cell information. The final determination of the cell is made by comparing the end address of the cell information with the read address of the data from the disc. The end of the voice program reproduction can be judged by the cell index of the cell information returning to "0" or the cell type becoming a still picture cell or a silent cell, and the start cell number of the voice program next to the voice program information. But you can judge.

Further, the skip of the silent cell is performed while detecting the PTS at the time of decoding the silent cell, or by skipping by obtaining the number of packs to be skipped from the data rate.

Since the display of the still image is stored in the buffer in advance, it is managed depending on the position of the buffer where the still image of the designated cell of the designated program is recorded or the number of the still image. . That is, the control at the buffer position is performed by sending data from the specified address of the video buffer 96 to the video decoder 87 and displaying it. In order to manage the information on the number of the image, the data from the beginning of the video buffer 96 is sent to the video decoder 87, the display is switched when the specified number is reached, and the sending of the data is stopped. The display time of the still image is the picture cell still time (P_C_Sti).
ll_Time). Still image data itself is 1
Since it is frame data, it switches to the next still image when the time described in this cell still time has elapsed.
Normally, this is done by the system controller 93. When the cell still time is FFh, this indicates infinity, and basically indicates that the still image is not switched unless the command or the user operation or the end of the audio program. When switching the display of a still image, a display effect by designating a transition mode can be added. The display effect switching time can be specified for each program before and after the still image is displayed, so follow this.However, if the playback device does not have a display function with special effects, the display effect is ignored and a simple display is performed. Switching playback may be performed.

In the synchronous mode, the audio data is reproduced based on the audio program reproduction time and the time code information of the audio data, and the still picture, highlight and sub-picture are reproduced according to the picture program reproduction time. Synchronization adjustment unit 10
2 compares the reference time information of the system with these times and performs synchronization control.

In the asynchronous mode, the audio, the highlight, the sub-picture and the still picture are not synchronized, and they are reproduced individually. The highlight, sub-picture and still picture are synchronously controlled, and the audio data is continuously reproduced in real time based on the time information of the system. Switching of the still image in the asynchronous mode is performed by a user operation and a command. The basics of the user operation are the operation of continuing the reproduction of the audio program as it is, sending the picture program forward and backward, returning to the beginning, and the operation of sending the audio program and the picture program simultaneously forward and backward or to the beginning. The command has a similar function.

Switching between the synchronous mode and the asynchronous mode reproduction state is designated by the picture program reproduction control. If this prohibits control by user operation, it is basically played in the synchronous mode except for the command.

When the picture program reproduction mode is specified and the program and the picture program cannot be kept synchronized with each other by a user operation or a command, the picture program is replayed according to the picture program reproduction time. It is also possible to select whether or not to continue the reproduction. Similarly, when the playback of the picture program is finished,
When the reproduction of the audio program is not completed, it is also possible to specify whether to return to the first picture program and continue the reproduction or continue the display of the last picture program. Similarly, if the playback of all audio programs is finished before the playback of all picture programs is stopped, the audio is muted and only the picture program is played, or the first audio program is returned to and the audio playback is continued. It is also possible to specify whether or not to end the reproduction of this audio title. In addition, in the same way, the playback of each audio program and picture program of this audio title is randomly selected from each program and repeated a specified number of times, or the same program is not played back (shuffle mode) and designated. Repeat the number of times or, in this case, synchronize the audio program and the picture program, that is, play the audio program and the picture program with the same program number at the same time, or asynchronously and independently play the audio program and the picture program. Can be specified.

As a user operation, it is possible to directly play back an audio title number or a time by directly designating it with a remote control or other key operation.
When the direct designation reproduction prohibition flag (UOP1) and the time designation reproduction prohibition flag (UOP2) of TT_CAT indicate prohibition, direct reproduction cannot be performed by a user operation. By this designation, the title creator can describe a playable audio title by a command depending on the state of the playback device. For example, an audio title that is not normally played can be created so that this audio title can be played back under certain conditions. For example, by setting a certain parameter only for a special player, you can evaluate the parameter with the command and write the command so that this audio title is played only when the value is set in the parameter. Good. If UOP1 and UOP2 are directly prohibited to be reproduced, this audio title will be reproduced only by a special player. By using this mechanism, it is possible to easily realize a mechanism in which only the audio title for which the cost has been paid can be reproduced on the disc on which a plurality of audio titles are recorded.

The AV decoder section can have another configuration. For example, as shown in FIG. 27, the AV decoder unit 85b can include a system decoder unit that serves as both a system decoder unit for AOB and a system decoder unit for P_VOB that are independent of each other. AOB and P
Since it is input when _VOB is different, DVD-Vi
It is possible to use a system decoder unit similar to that specified by deo. According to this, the highlight buffer 9
4, except that the buffer capacity of each of the video buffer 96 and the sub-picture buffer 105 is increased and a still image management mechanism is added to the control of the video buffer 96.
The decoder used in deo can be used as it is. The operation of the AV decoder section 85b is performed by the AV decoder section 8
This is substantially the same as the operation of 5a.

Further, the DVD player may have the structure shown in FIG. In this configuration, P_
A P_VOB buffer 106, which is a VOB stream buffer, is provided immediately before the AV decoder unit 85b. With this configuration, the same type of AV decoder unit used by DVD-Video can be used. All P_VOB data to be read before reproduction of audio data is stored in the P_VOB buffer, and in this buffer, P_VOB corresponding to the reproduction order is dynamically multiplexed with the audio stream and transmitted to the AV decoder unit. Therefore, in the AV decoder section 85b, the DVD-V
A processing speed slightly higher than the speed defined by the video standard is required for the AOB / PVOB system decoder unit 120. Also, the stream must be supplied to the AV decoder so that the audio buffer 99 does not underflow.

As described above, according to the second embodiment, MP
Since the program reproduction information describing the start time and the reproduction time of each audio data based on the reproduction start time of the first audio data of the EG2 stream is recorded in the management area as a part of the reproduction control information, It is possible to provide an optical disc that can reproduce high-quality digital audio data with video data added at a limited bit rate, and does not have an inexpensive playback device or a video data playback function. Also in the reproducing apparatus, the intervals of audio reproduction can be made constant, and the title creator can easily create data.

Also, while using high-quality audio, it is possible to display a plurality of still images, sub-videos, and menus in synchronism or asynchronously with the audio, which enables various expressions.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to the drawings. (1) Physical structure of optical disc The description is omitted because it is the same as in the first and second embodiments. (2) Logical structure of optical disc Since it is the same as the first and second embodiments, the description thereof is omitted. (3) Data Structure of Audio Zone Area 32c FIG. 43 shows the data structure of the audio zone area 32c. An audio manager 900 and one or more audio title sets 800 are stored in the audio zone area 32c. This is the same as in the first and second embodiments. The audio still image set (Audio Still Video) is displayed in the audio zone area 32c.
Set) 1100 is further stored.

(3.1) Data Structure of Audio Manager 900 FIG. 44 shows the data structure of the audio manager 900. The data structure from the audio manager 900 to the audio manager information management table (AMGI_MAT) 902 is the same as the data structure shown in FIG.

Audio manager information management table 9
02 is an AS for recording the position of the audio still image set
It includes a VS start address (ASVS_SA) 904.

The data structure of the audio manager information management table 902 has an ASVS start address 90.
The data structure is the same as that shown in FIG.

(3.2) Audio still picture set 110
0 Data Structure FIG. 45 shows a data structure of the audio still image set 1100. The audio still image set 1100 includes a plurality of picture video objects (hereinafter referred to as P_VOB) 1102, and audio still image set management information (ASVSI) 110 for managing the plurality of P_VOBs 1102.
1 and a backup (ASVSI_BUP) 1103 of the audio still image set management information 1101. In the following description, the audio still image set is AS
It may be abbreviated as VS (Audio Still Video Set). In addition, P_VOB1102
Audio still image object (ASVOB: Audi
o Still Video Object).

(3.2.1) Data Structure of P_VOB 1102 FIG. 46 shows the data structure of P_VOB 1102. P
_VOB 1102 is a picture NV pack (P_NV
_PCK) 1113 and video pack (V_PCK) 1
114 and a sub-picture pack (SP_PCK) 1115. There is only one picture NV pack 1113 in one P_VOB 1102.

The video pack 1114 stores video data forming an I picture of the MPEG system. The picture video object, unlike the video object, is an object for storing a still image instead of a moving image. Therefore, as a general rule, the video data stored in the video pack 1114 includes only intra-frame compressed I pictures. Here, the information indicating one still image corresponds to one I picture.

A plurality of sub-picture streams can be described in the sub-picture pack 1115. The sub-picture pack 1115 stores a code for identifying the plurality of sub-picture streams. However, sub-picture pack 11
15 does not have to be included in P_VOB 1102.

The picture NV pack 1113 includes a DSI packet (not shown) and a PCI packet (not shown). Information used for special reproduction such as fast-forward reproduction is stored in the DSI packet. Highlight information 1120 is stored in the PCI packet.

As shown in FIG. 47, the highlight information 1120 is ASV highlight general information 1121 for describing the effective period of the highlight and the number of buttons, and the ASV button for describing the display color of the button. Color information 11
22 and an ASV button information table 1123 for describing button commands and the like.

The P_VOB 1102 is a DVD-V.
Unlike video, it has no audio data.

(3.2.2) Data Structure of Audio Still Picture Set Management Information 1101 As shown in FIG. 45, the audio still picture set management information 1101 is audio still picture for managing a plurality of still pictures as a group. Image unit information (ASVUI)
1131 and an audio still image search pointer table (AS) for managing the recording positions of the P_VOB 1102.
V_SRPT) 1132.

Audio still image unit information 1131
Is a plurality of Ps of the same attribute continuously recorded on the disc.
This is information for managing the _VOB 1102. This information is the basic unit of processing during reproduction.

The audio still image unit information 1131 includes an "audio still image set ID (AS
VS_ID) "and" the number of audio still image units (ASVU_N) indicating the number of ASVUs included in ASVS.
s) ”,“ P_VOB start address (P_VOBS_SA) ”indicating the recording position of P_VOB, and“ P_VO
B end address (P_VOBS_EA) ”and P_VO
Describes the ASVU attributes such as the compression method of B, the aspect mode, and whether or not there is a button "ASVU attribute (A
SVU_ATR) "and" P_VOB sub-picture palette (P_VOBS_SP_P) for determining the display color of the sub-picture.
LT) ”and“ ASVU general information (ASVU_GI) ”corresponding to each ASVU for designating a P_VOB belonging to each ASVU is recorded.

Each "ASVU general information (ASVU_G
I) ”indicates“ the number of P_VOBs (P_VOB_Ns) ”indicating the number of P_VOBs forming the ASVU, and the ASV.
“Starting P_VOB number” indicating which P_VOB of S_POB belongs to that ASVU is recorded.

In the audio still picture search pointer table 1132, a plurality of "ASV search pointers (ASV_SRPT)" describing the respective start addresses of P_VOBs included in ASVS are recorded.

(3.3) Audio title set 80
0 Data Structure FIG. 48 shows a data structure of the audio title set 800. The data structure of the audio title set 800 shown in FIG. 48 is the same as the data structure shown in FIG. 5, except for the data structure of the PGC information 833.

FIG. 49 shows the data structure of the PGC information 833. The PGC information 833 includes “audio title set comprehensive information (ATS_PGC_GI)” and “audio title set program information table (ATS_
PGIT) "," Audio title set cell reproduction information table (ATS_C_PBIT) ", and" Audio title set still image reproduction information table (ATS_
ASV_PBIT) ”.

[Audio title set comprehensive information (A
TS_PGC_GI) ”, the number of audio programs included in the PGC information, the number of cells, the playback time of the PGC, and the address information of the ATS_PGC information are recorded. The address information of the ATS_PGC information is "audio title set program information table (AT
S_PGIT) "," Audio title set cell playback information table (ATS_C_PBIT) "," Audio title set still image playback information table (ATS_
ASV_PBIT) ”.

In the "audio title set program information table (ATS_PGIT)", a plurality of "audio program information (ATS_PGIT) included in the PGC information is included.
I) ”is described.

Each "voice program information (ATS_PG
"I)", "voice program physical allocation information" indicating whether or not the AOB of the voice program and the previous voice program are recorded in physically discontinuous positions on the disc, the voice program and its Included in the voice program is "voice program time attribute information" that indicates whether the time information of the previous voice program is continuous, "voice program start cell number" that indicates the first cell number that makes up the voice program. "Playback start voice Cell time" indicating the first time information of the first voice cell, "Voice program total playback time" indicating the playback time of the voice program, and silence time until the start of playback of the voice cell of the voice program. "Voice pause time" and the still image unit that is played back at the same time when the voice of this program is played back is specified. And ASVU number (ASVUN) ",
“Still image display mode (ASV_DMO) that indicates the still image display mode, such as whether the audio and the still image are synchronized, whether the still images are displayed in order or randomly
D) ”and a still image reproduction information table (ATS_ASV_
PBIT) describes "ATS_ASV_PBI start address" and "ATS_ASV_PBI end address" for designating corresponding still picture reproduction information.

FIG. 50 shows the "still image display mode (ASV_
DMOD) ”. "Still image display mode (ASV_DMOD)" is "display timing mode"
And a flag "display order mode".

The "display timing mode" indicates a specific timing for reproducing audio data or a period for updating a still image.

When the "display timing mode" is browsable, the display timing of the still image can be changed by the user's interaction. When the "display timing mode" is a slide show, the timing of displaying a still image cannot be changed by an interaction from the user.

When the "display timing mode" is the slide show, the display of the still image is updated in accordance with the display timing determined in synchronization with the audio information reproduced at the same time. When the "display timing mode" is browsable, the display of the still image is updated asynchronously with the audio information that is played back at the same time if the predetermined display duration time outs.

The "display order mode" indicates whether the still images are sequentially displayed according to the display list, or randomly or shuffled. Randomly displaying still images means allowing still images to be randomly selected and displaying still images in the order in which the still images are selected. The shuffle display of the still image means that the still image is prohibited from being duplicated and is randomly selected, and the still image is displayed in the order in which the still images are selected.

The "audio title set cell reproduction information table (ATS_C_PBIT)" includes a plurality of "audio cell reproduction information (ATS_C_PBI)". Each "voice cell playback information (ATS_C_PBI)" includes a "cell index number" indicating the order of cells included in the program, a "cell type" indicating whether the attribute of the cell is a still image cell, a silent cell or a voice cell, and , "Cell start address" that describes the start address of the cell as a relative address from the first pack of the AOB of the audio title set that includes the cell, or "cell end address" that also describes the address of the last pack of the cell And are stored.

The "audio title set still picture reproduction information table (ATS_ASV_PBIT)" includes a plurality of "still picture reproduction information (ATS_ASV_PBI)". Each "still image reproduction information (ATS_ASV_PBI)"
Is the P_ recorded in the audio still image set.
It has a plurality of "display lists (DLIST)" in which the order in which VOBs are reproduced is described.

In each "display list (DLIST)", A
The "ASV number" indicating the number of P_VOB of the SVU and the "initial button number (F
OSL_BTNN) ”, a“ voice program number ”indicating a voice program corresponding to DLIST, and DLIST
"Display timing", which indicates the timing of displaying P_VOB described in 1., by the time from the beginning of the audio program, and "start portion transition mode" and "end portion transition mode" indicating the transition mode of the still image. Is stored.

In the present embodiment, "no transition", "fade from black", "fade to black", "crossfade", and "wipe for each direction" are assumed as picture transition modes. is doing.

(3.4) Data Structure of AOB 802 The AOB 802 is packetized in 2 KBytes. AOB 802 has LPCM, AC3 or DT
S and other compressed data are stored. LPCM
In the case of, the sampling bit is any one of 16, 20, and 24 bits, and the sampling frequency is 48 kHz,
96kHz, 192kHz, 44.1kHz, 88.2
It is either of kHz and 176.2 kHz.

An example of the structure of AOB 802 is similar to that described in the second embodiment with reference to FIG. (4) Two reproduction methods In the audio zone area 32c, VOB, AOB, and P
Three MPEG streams of _VOB are stored. A
OB is included in the audio title set (ATS). P_VOB is included in the audio still image title set (ASVS). The VOB is included in the audio manager (AMG) as shown in FIG.

AOB and P_VOB are the main information stored in the disc, and are typically music information with a still image. The VOB is typically a menu for allowing the user to select any music information with still image.

Of the MPEG streams stored in the audio zone area 32c, the VOB is reproduced by the standard method defined by the MPEG standard. Also, AOB and P_VOB are reproduced by an extended reproduction method different from the standard reproduction method.

(4.1) Standard Playback Method First, the standard playback method will be described. This playback method is
It is used when reproducing a VOB recorded on an optical disc.

FIG. 51 shows the data structure of the system stream of this embodiment in conformity with MPEG. At least one system stream may be stored on the optical disc.

The system stream can include a plurality of elementary streams. The elementary streams include a video elementary stream that stores moving image information, an audio elementary stream that stores audio information, and a sub-picture elementary stream that stores sub-picture information. Each of the plurality of elementary streams is divided into a plurality of packs.

The system stream shown in FIG. 51 is
It includes a video elementary stream, an audio elementary stream, and a sub-picture elementary stream. The video elementary stream is divided into one or more video packs. The audio elementary stream is divided into one or more audio packs.
The sub-picture elementary stream is divided into one or more sub-picture packs. In FIG. 51, "V" indicates a video pack, "A" indicates an audio pack, and "
S "indicates a sub-picture pack.

As shown in FIG. 51, each pack is
It includes a "pack header", a "packet header", and a "data field". The data length of 1 pack is 2Kb
It is yte.

[0214] The "pack header" contains a pack start code and SCR (System Clock Refer).
and MUX (Multiplex) rate, which are MPEG-compliant data.

The stream I is included in the "packet header".
D, packet length, STD (System Target)
Decoder) Buffer scale size, PTS
(Presentation Time Stamp)
MPEG-compliant data is described.

The stream ID described in the "packet header" indicates whether the data stored in the "data field" is a video elementary stream or another elementary stream. Other elementary streams include an audio elementary stream, a sub-picture elementary stream, and management information.

The management information is called an NV pack. The management information includes a PCI packet and a DSI packet. P
The CI packet stores highlight information for accepting and processing a user interaction. DS
Information used in special reproduction such as fast-forward reproduction is stored in the I packet.

In this embodiment, the substream ID is stored in the data fields of the elementary streams other than the management information. Substream ID
Is an 8-bit length field indicating whether the data stored in the data field is audio data or sub-picture data. In addition, substream I
D indicates the encode type and the channel identification number. If the data stored in the data field is audio data, the encoding type is linear PC.
It is one of M system, AC-3 system, DTS, etc., and channel identification numbers are # 0 to # 7 (maximum 8 types).
Is one of. When the data stored in the data field is sub-picture data, the channel identification number is any of # 0 to # 31 (up to 32 types).

Data compressed according to a predetermined method is recorded in the "data field". For example, in the case of video data, MPEG2 format compressed data is recorded in the data field, in the case of audio data, linear PCM system, AC-3 system or DTS system compressed data is recorded in the data field, and sub-picture data. In this case, sub-picture data compressed by run-length coding is recorded in the data field.

The SCR in the "pack header" and the PTS in the "packet header" are used for adjusting the synchronization between the audio pack decoding process and the sub-picture pack decoding process.

When the reproducing apparatus reproduces the system stream recorded on the optical disk, the reproducing apparatus uses the SCR included in the first pack of the system stream as the STC (System Time clock) as a reference clock.
k) is set as the initial value, and each pack is input to each decoder at the timing indicated by the SCR while referring to the STC. Each decoder decodes each input pack. Each decoded pack is output from the decode to the outside at the timing indicated by PTS. By using the PTS assigned to each pack as the output timing, the synchronization of the outputs of audio, video and sub-picture is guaranteed.

As described above, in the case of the standard reproduction method, audio information, video information and sub-picture information are multiplexed in the reproduced system stream. Further, at the time of reproduction, the STC which is the reference clock is reset by the SCR for each system stream,
Audio, video and sub-picture are output from the decoder to the outside at the timing indicated by the PTS attached to each pack. In this way, the audio, video and sub-picture are reproduced in synchronization with each other.

(4.2) Method of reproducing AOB and P_VOB Next, AOB and P_VOB recorded on the optical disc
The reproducing method of will be described.

FIG. 52 shows P_VOB, ASVU, Pro.
The relationship between gram and AOB is shown.

The ATS contains a plurality of PGC information (ATS_
PGCI) may be present. In the example shown in FIG. 52, A
The TS contains one piece of PGC information (ATS_PGCI).

The PGC information includes one or more audio program information (ATS_PGI) (for example, Program #
1, Program # 2, ..., Program #
l) is described. The voice program information is a unit of access to voice data, and the voice program information is 1
It includes the above audio cell reproduction information (ATS_C_PBI). The voice cell reproduction information is the minimum management unit. The voice cell reproduction information points the position of the voice data stored in the AOB. As a result, the audio data to be reproduced in association with the audio cell reproduction information is determined.

[0227] Also, in the PGC information, one or more still picture reproduction information (ATS_ASV_PBI) is described.
The still image reproduction information defines how to reproduce a still image in program units. A plurality of audio program information can share the same still picture reproduction information. For example, in the example shown in FIG. 52, Program # 1 and P
program # 2 shares ATS_ASV_PBI # 1.

In such sharing, a plurality of audio program information is stored in the still picture reproduction information table (ATS_ASV_).
PBIT) common entry.

FIG. 69 is a diagram for explaining the relationship between DLIST and P_VOB.

ATS_ASV_PBI has a plurality of display lists (DLIST), and each DLIST points to still image data (P_VOB) to be displayed. Normal D
Still image data (P_VOB) according to the order of LSIT
Is played. Each Prog of ATS_PGCI
ATS_ASV_PBI can be specified for each ram, but the same ATS_ASV_ for consecutive programs.
PBI can be specified. Also, in Program units, P
You can specify ASVU which is the unit to read _VOB, but Pro that specifies the same ATS_ASV_PBI
In gram, the same ASVU is designated.

That is, it is possible to specify to use the same ATS_ASV_PBI for the same ASVU in consecutive programs. This is called the ASVU range.

Since the same ASVU will be used during playback of the program of the same ASVU range,
Still images are not read and audio playback is not interrupted. The DLIST of ATS_ASV_PBI can specify an arbitrary P_VOB in the same ASVU. Therefore, the same P_VOB can be reproduced many times. Further, P_VOB in ASVU does not necessarily have to be designated as DLIST.

From this, in different programs,
It is also possible to play different still images while using the same ASVU. However, ATS_ASV_PBI must be changed.

Further, the audio program information specifies ASVU recorded in ASVS in order to specify a plurality of still images (P_VOB) to be displayed simultaneously with the reproduction of AOB.

ASVU defines a unit in which the playback device buffers still image data. That is, the still image data of the designated ASVU is read in advance from the optical disc before reproducing one piece of audio program information. Therefore, the reproducing device does not need to read the still image data from the optical disc during the reproduction of the music program.

Further, when reproducing the next audio program information, the reproducing apparatus determines whether or not the required still image data group indicated by ASVU exists in the main memory. Therefore, if the ASVU still image data group used in the previous audio program information is present in the main memory, the playback device does not need to read the still image data from the optical disc.

The producer of the disc title may share one ASVU by both parties if he / she wants the reproducing apparatus to quickly switch from the audio program information to the next audio program information. By sharing the ASVU with the preceding and following audio program information, the playback device can quickly switch from the audio program information to the next audio program information.

Each ATS_ASV_PBI manages the display order of the still images to be displayed by the display list (DLIST). In the display list (DLIST), the still image to be displayed is designated by the ASV number. AS
The V number is a number for identifying a still image included in ASVU.

As described above, according to the PGC information, a still image can be designated for each audio program information. Alternatively, the same still image can be displayed for a plurality of audio program information. Even if the audio program information changes, the display can be changed without muting the audio.

[0240] Fig. 53 shows an example of PGCs forming a title. In this example, there are four audio programs, the audio program # 1 is AOB # 1, and the audio program # 2 is A.
OB # 2, audio programs # 3, # 4 are AOB # 3, and AOB # 1, AOB # 2, AOB # on the recording medium.
It is assumed that they are recorded in the order of 3. Further, the voice programs # 1, # 2, and # 3 each have a silent cell, and the voice program # 2 has two voice cells.

The audio programs # 1 and # 2 are AS
VU # 1 and ASVU # 2 for voice programs # 3 and # 4
Is displayed, P_VOB # 1 in cell # 2 and P_VOB in cell # 4
P_VOB # 3 in VOB # 2 and cell # 5, P in cell # 7
It is assumed that P_VOB # 5 is displayed in _VOB # 4 and cell # 8.

All audio cells have a playback time of 60 seconds (PT
S is 5,400,000) and the silent cell is 1 second (PTS is 90,000).
It can be described as shown in. Similarly, still picture reproduction information can be described as shown in FIG.

If the audio data is 48 kHz and 16 bits are sampled on 2 ch, the number of silent cell packs is 96 and the number of audio cell packs is 5,760, as described in the cell information shown in FIG. Becomes When the number of packs of still images is 50, the ASV search pointer becomes as shown in FIG. Also in FIG.
As shown in 8, ASVU general information becomes.

In this embodiment, the address information of the ASV search pointer is a relative address from the recording position of the first P_VOB, but any address that can specify the position of the P_VOB on the optical disc may be used. For example, if the ASVU general information has address information as a base point, it may be a relative address from the position indicated by the address information.

Program # 1 and program # 2 in FIG.
The still image display mode is "SlideShow" like
, The still image is reproduced in synchronization with the sound.
The ASVU numbers of program # 1 and program # 2 are "
Since it is 1 ", ASVU # 1 is read into the buffer before playing the program. Next, ATS_ASV
Still picture reproduction information # 1 is referred from the address information of _PBI, and as shown in FIG. 55, the display of the still picture of display list # 1, display list # 2, and display list # 3 of still picture reproduction information # 1 is "Voice program number" in the display list,
It starts at the time indicated by "display timing".
The display timing is synchronized with the reproduction time of the audio information that is reproduced together.

[0246] That is, the PTS of the still image in the display list # 1 of the still image reproduction information # 1 is 9 when the AOB # 1 is reproduced.
When the number reaches 10,000, the PTS of the still image in the display list # 2 of the still image reproduction information # 1 is 9 when the AOB # 2 is reproduced.
When the PTS reaches 55,800,000 when the AOB # 2 is reproduced, the still images in the display list # 3 of the still image reproduction information # 1 are displayed when the PTS reaches 55,800.

Thus, the still image display mode is "Sli.
In the case of “deShow”, the still image is displayed at a predetermined display timing in synchronization with the sound reproduction, and the still image is displayed by the user's interaction (for example, selection of a specific button with the mouse). The display timing cannot be changed.

In FIG. 59A, the still image display mode is "Sli".
The relationship between the audio reproduction timing and the still image display timing in the case of "deShow" is shown.

On the other hand, program # 3 in FIG.
Like program # 4, the still image display mode is "Bro
If it is “wsable”, the still image is reproduced asynchronously with the audio. AS of program # 3 and program # 4
Since the VU number is "2", ASVU # 2 is read into the buffer before the program is reproduced. Next, A
Still image reproduction information # 2 is referred to from the address information of TS_ASV_PBI. The display timings of the still images in the display list # 1 and the display list # 2 of the still image reproduction information # 2 are changed by an interaction from the user (for example, input of a command by a user operation).

If no user interaction occurs within the time indicated by "display timing" in the display list, the "display timing" time is set as the display duration, and the display duration is timed out. Then, the display of the next still image is started.

Depending on the still image display mode, still images are sequentially displayed according to the display list, or still images randomly selected and allowed to be reproduced (random reproduction) are selected, or duplication is prohibited to be performed randomly. It is also possible to specify in which mode the selected still image is to be played back (shuffle playback).

Specifically, when reproduction is started from program # 3, the ASVU number of program # 3 is "
2 ", so ASVU # 2 is loaded into the buffer. Further, from the address information of ATS_ASV_PBI, the DLIST shown in the still picture reproduction information # 2 is referred to, and the audio program number of the display list # 1 is" 3 ". Therefore, from the ASV number of display list # 1 to P_VO
B # 4 is displayed. Here, if a key corresponding to Next_DLIST provided on the remote controller or the like is pressed, a still image of DLIST # 2, that is, P_VOB # 5 indicated by the ASV number is displayed.

A still image of DLIST has a "display effect" (that is, a start display effect and an end display effect (see FIG. 55).
)) And “transition time” (that is, start transition time and end display effect (see FIG. 55)). If there is no user operation for the time 5,490,000 shown in the display timing of display list # 1, that is, about 1 minute (corresponding to the playback time of program # 3), the next DLIST still image, that is, P_VOB # 5 is displayed according to the "display effect" and the "transition time". P
The sound of program # 4 is reproduced in association with the display of _VOB # 5.

From the playback time of program # 3, P_
If the display timing of VOB # 4 is short, program #
While P3 is being played back, P_VOB # 4 is displayed and P_VOB # 4 is displayed.
The display of B # 5 is started. Also, if the display timing of P_VOB # 4 is longer than the playback time of program # 3, P_VOB will start after the playback of program # 4 is started.
The display of # 5 will be started.

When the reproduction is started from the program # 4, as in the case of the program # 3, the ASVU # 2 is read, the still picture reproduction information # 2 is referred to, and the audio program number is "4". The first DLIST P_VOB
Is displayed. After that, the display of the still image may be changed according to a user operation or a command. The voice program number of DLIST is effective only for determining the P_VOB to be displayed first when the ASVU changes, and when the reproduction is continued, the user operation or the command has priority. If the time indicated by the display timing corresponds to the P_VOB
Is displayed, P_VO indicated by the next DLIST is displayed.
B will be displayed.

When the value indicated by the display timing is a value indicating "infinity", the corresponding P_VOB continues to be displayed until a user operation or a command is executed. The maximum value (for example, all bit values are “1”) can be used as the value indicating infinity, but other values may be used. When the still image display mode is "Browseable", P
The display of _VOB can always be infinite.

In FIG. 59B, the still image display mode is "Bro".
The relationship between the audio reproduction timing and the still image display timing in the case of "wsable" is shown.

In this embodiment, the information necessary for each voice program is the voice program information (ATS_PG
Although it is recorded in I), it may be recorded in any area as long as it can be determined that the information corresponds to each audio program. For example, ASVU number, still image display mode, A
TS_ASV_PBI start address, ATS_ASV_
As shown in FIG. 60, the PBI end address is the audio title set still image reproduction information table (ATS).
It may be recorded in the still image reproduction information search pointer (ATS_PG_ASV_PBI_SRP) of _ASV_PBIT).

As described above, unlike VOB reproduction,
AOB and P_VOB will be reproduced by the decoder at the same time.

Hereinafter, the VOB reproduction method and the AOB and P_VOB reproduction methods will be compared and arranged.

The same point is that video information is output together with audio information. However, in the case of P_VOB, the video information is still image information including only I pictures.

The first difference is the data storage position. In the case of VOB, audio information and video information are multiplexed and recorded on the optical disc as one system stream, but AOB and P_VOB are recorded in different areas of the optical disc as different system streams.

The second difference is the method of synchronizing the voice and the still image. As described above, VOBs are reproduced by the decoder one by one. That is, by the SCR in the "pack header" of the first pack of the system stream,
The STC which is the reference clock is reset, the STC is referred to, and both the audio information and the still image information are output with the PTS in the “packet header” of each pack as the output timing. On the other hand, AOB and P_VOB are simultaneously reproduced by the decoder. Details will be described later, but AOB
A plurality of predetermined P_VOBs that are reproduced in synchronization with are read from the disk and input to the decoder prior to AOB.
P_VOB input to the decoder is different from VOB,
It is not displayed immediately and is retained in the decoder. Individual P
In decoding _VOB, the STC is reset by the SCR of the first pack according to the MPEG decoding model, the data is decoded according to the PTS of the packet, and the decoded data of a plurality of predetermined P_VOBs that are reproduced in synchronization with the AOB are accumulated. However, the data of P_VOB before being decoded is actually stored in an appropriate buffer. When P_VOB is completely input to the decoder, AOB is read from the optical disc and input to the decoder. If AOB is input to the decoder, AO
Similarly to VOB, B resets the STC that is the reference clock by the SCR of the first pack, refers to the STC, and outputs the PTS in each pack header as the output timing.

On the other hand, the information of the actual output timing of P_VOB is recorded in another area of the optical disc (that is, DLIST which is a part of PGC information). This display timing information is separately supplied to the decoder, and each P_VOB in the decoder is not output in synchronization with the STC, but is output at the display timing recorded in the DLIST. That is, when reproducing the AOB and the P_VOB, the synchronization timing is such that the AOB uses the PTS that is the display timing associated with itself, and the P_VOB uses the display timing that is recorded separately.

With the above, the description of the audio zone area is completed, and a DVD which is a multimedia optical disk is completed.
After that, the reproducing apparatus for reproducing the recorded contents of the medium having the above-described structure will be described.

The basic structure of the reproducing apparatus is the same as that described in Embodiments 1 and 2, but the remote controller for operating the DVD player or the front panel of the DVD player has the same structure as in Embodiment 2. , A key for separately controlling audio data and video data is provided. This is a key for skipping back and forth the video data or returning to the first video data while continuing the reproduction of the audio data.

FIG. 61 is a block diagram showing the internal structure of the DVD player 90 in the present embodiment. DVD
The player 90 has the same structure as that of the AV decoder section shown in FIG.
The DVD player 70 shown in FIG. After that, AV
The configuration of the decoder section will be described.

In this embodiment, as streams, there are AOB which is audio data and P_VOB which is mainly video data, and VOB for menus in which audio and video are multiplexed. The AV decoder unit 85c includes a P_VOB system decoder unit 103, an AOB system decoder unit 104, and a VOB system decoder unit 108. The AV decoder unit 85c has a configuration for operating these system decoder units 103, 104 and 108 synchronously or asynchronously.

System decoder unit 103 for P_VOB
Receives a stream of P_VOB, and stream I in the header of each packet of each stream that composes this stream.
Video packets, PCI (highlight) packets, and sub-picture packets are sorted by determining D and the substream ID.

The AOB system decoder unit 104 is
An OB stream is received, and data is distributed by the packet header of this stream.

The VOB system decoder unit 108
By receiving the OB stream and discriminating the stream ID and substream ID in the header of each packet of each stream constituting the OB stream, an audio packet, a video packet, a PCI (highlight) packet,
Sub-picture packets are sorted.

The AV decoder unit 85c includes a highlight buffer 94 for temporarily storing the highlight information of PCI packets from the P_VOB system decoder unit 103 and the VOB system decoder unit 108, and the P_VOB system decoder unit 103 and the VOB system. The video buffer 96 that temporarily stores the video packets from the decoder unit 108, the sub-picture buffer 105 that temporarily stores the sub-picture packets from the P_VOB system decoder unit 103 and the VOB system decoder unit 108, and the AOB system decoder unit 104. Also, the highlight data from the audio buffer 99 for temporarily storing the audio packet from the VOB system decoder unit 108 and the highlight buffer 94 are decoded, and the decoded highlight information is stored in the system. A highlight decoder 95 for outputting to the control unit 93, a video decoder 87 for decoding the video data from the video buffer 96, a sub-picture decoder 98 for decoding the sub-picture data from the sub-picture buffer 105, and an audio from the audio buffer. An audio decoder 100 that decodes data and outputs it as an audio output, a video composition 101 that combines the decoding results of the video decoder 87 and the sub-picture decoder 98 into one video data, a highlight decoder 95, a video decoder 87, a sub-picture. A synchronization adjustment unit 102 that performs synchronization management of operations of the decoder 98 and the audio decoder 100.
And further include.

The operation of the disc reproducing apparatus of the present embodiment configured as described above will be described below. The process up to reading the stream is the same as in the first and second embodiments, and will not be repeated.

62 to 66 show a schematic flow of reproducing PGC information.

At the start of reproduction, the system control unit 93 determines whether or not the reproduction mode is the image-centered reproduction mode by the reproduction mode determination unit. If it is determined that the playback mode is video-centered, the video manager is read based on the information read from the volume / file management area. The system control unit 93 is a PGC for the menu of the video manager.
The recording address of the program chain for the volume menu is calculated with reference to the management information table, and this is reproduced and held internally. If the program chain for the volume menu is held inside, the system control unit 93
Calculates the video object (VOB) to be reproduced and the recording address on the optical disk by referring to the held PGC information. When the video object to be reproduced is determined, the system control unit 93 causes the mechanism control unit 8
3, a control signal is output to the signal processing unit 84, and the determined video object (VOB) is taken out from the optical disc and reproduced. The system stream that constitutes the VOB is A
At the same time as being input to the V decoder unit 85, the system control unit 93 outputs “V” as a decode stream instruction command.
An instruction indicating “OB reproduction” is given to the AV decoder unit 85c.

VOB input to the AV decoder section 85c
Is generated by the VOB system decoder unit 108.
Are divided into packs of audio, video, sub-picture, and NV pack, and are input to the audio buffer 99, the video buffer 96, the sub-picture buffer 105, and the highlight buffer 94, respectively. The highlight buffer 94 buffers only the highlight information in the NV packet of the PCI packet. The data input to each buffer is input to the audio decoder 100, the video decoder 87, the sub-picture decoder 98, and the highlight decoder 95, respectively, and is decoded. Audio for the menu is output from the audio decoder 100, and the video decoder 87
The output of the sub video decoder 98 and the output of the sub video decoder 98 are synthesized by the video synthesis 101 and output as a video. The output of the highlight decoder 95 is read by the system control unit 93, and the button information of each menu and the like is stored in the internal memory of the system control unit 93.

As described above, the video menu shown in FIG. 40 for allowing the user to select the title to be reproduced (that is, the audio program) is displayed.

It is assumed that the operator looks at this video menu and selects and confirms a menu item that the operator is interested in. That is, it is assumed that the number of any menu item is designated by the remote controller. Upon receiving the designation of the menu item number from the remote controller, the system control unit 93 refers to the button information of the highlight information of the PCI pack included in the VOB of the video menu being reproduced which is stored in the memory in advance and corresponds to the designated number. Execute the control command. The control command is PlayProgram #n or the like, and the title number to be reproduced is designated by n.

As the execution operation by the PlayProgram command, the system control unit 93 refers to the title search pointer table which is a part of the audio manager, and the audio title set (ATS) to which the designated audio program belongs and the title number in the ATS. To decide. When the audio title set is determined, the system control unit 93 outputs a control signal to the mechanism control unit 83 and the signal processing unit 84, reproduces the audio title set management information of the determined title set, and outputs the audio title set management information. The audio title set PGC information search pointer, which is a part, is sequentially read, and the PGC information of the program chain including the audio program to be reproduced is determined.

When the PGC information is decided, the system control section 93 outputs a control signal to the mechanism control section 83 and the signal processing section 84, reads the decided PGC information from the disc, and uses it for the internal PGC information. Hold in buffer.

If the PGC information for starting the reproduction of the title is held, the system control section 93 follows the flow for reproducing the PGC information of FIG.
Play GC information. It is assumed that the audio program to be reproduced has already been determined by the method using the menu command described above or direct designation of the remote control key. The system control unit 93 refers to the held PGC information, first obtains the ASVU number of the first audio program information, compares it with the previously reproduced ASVU number, and if the ASVU number has changed, From the ASVU general information corresponding to this ASVU number, all the still image data contained in ASVU, that is, P_VOB, is read from the disc and input to the AV decoder unit 85c. At the same time, a command indicating “P_VOB reproduction” is issued from the system control unit 93 as a decode stream instruction command to the AV decoder unit 85.
given to c. In the AV decoder unit 85c, the input P_VOB is separated by the P_VOB system decoder unit 92 into each pack and packet, and stored in the corresponding buffer.

At this time, the size of the video buffer 96 is A
It must be greater than or equal to the maximum value of the sum of the sizes of P_VOB of SVU. In order to guarantee the playback device in any player, the maximum value of the total amount of data of P_VOB included in ASVU is specified, and the video buffer 9 having a size larger than that is specified.
Mandatory to have 6 on all playback devices. In the case of the present embodiment, this maximum value is 2 MB. Since the I picture is 100 KB to 200 KB, 10 to 20 I pictures can be reproduced together with the audio information.

At the time when all the P_VOBs forming the ASVU have been input to the decoder, the highlight decoder 9
5, the video decoder 87 and the sub-picture decoder 98 do not perform the decoding operation. As described above, in order to store all the data of the corresponding ASVU in the corresponding buffer before the reproduction of the audio data, the highlight buffer 94, the video buffer 96, and the sub-picture buffer 1 of the second embodiment are stored.
05 requires a larger capacity than the buffer defined by MPEG2 or DVD-Video.

When all P_VOBs have been stored in the corresponding buffers, in preparation for audio reproduction of the designated PGC, the audio encoding mode in the audio title set PGC information retrieval pointer 832 corresponding to the designated PGC information sets the audio encoding mode. The states of the decoder unit 85c and the audio decoder 100 are set to a state in which audio data can be decoded. Next, the system control unit 93 prepares to display a still image. The system control unit 93 determines the still image reproduction information from the ATS_ASV_PBI start address of the audio program information.

If the still picture display mode of the audio program information is Browseable, the first DLIST of the still picture reproduction information determines the still picture to be displayed first. The still image display mode of the audio program information is Sli.
If deShow, a plurality of DLIs of still image reproduction information
From ST, DLIST having the first display timing in the range of the audio program to be reproduced is selected. If DLIST is decided, the system control unit 93
Displays a still image designated by the DIST ASV number, that is, P_VOB. That is, the display control information of the still image information is output to the synchronization adjusting unit 102 of the AV decoder unit 85c according to the display timing of the still image reproduction information. The display control information includes a wait period until designation and update display of an I picture of P_VOB to be updated. When the display control information is input, the synchronization adjusting unit 102 instructs the video decoder 87 to output the specified I picture at the specified timing according to the information. In this way, P_VOB is displayed. P_VOB is A
Unlike OB and VOB, it is output by the display timing information recorded in another area.

At the same time when the display of P_VOB is started, the sound designated by the sound program is reproduced. at the same time,
A user's key operation is also accepted.

The reproduction of the sound designated by the sound program is based on the reproduction of the sound program shown in FIG. First, the cell number (Cn) to be reproduced is determined by the audio title set program information table and the audio title set cell reproduction information table. Here, since it is the first, it is from the first. When the cell type of the cell to be reproduced is a silent cell, the processing of reproducing the silent cell is performed. This is sufficient as long as it has an effective silence time equivalent to the reproduction time of the silence cell. If the cell is not a silent cell, the cell is a voice cell, and therefore the voice cell of FIG. 65 is reproduced. In the audio output from the beginning of the audio cell, the audio object to be reproduced and the recording address thereof are determined from the audio cell reproduction information, the control signal is output to the mechanism control unit 83 and the signal processing unit 84, and the determined AOB Prepare for playback. AOB read from the disc is AV
It is input to the decoder unit 85c and at the same time, the system control unit
A command indicating "AOB reproduction" is given to the AV decoder unit 85c as a decode stream instruction command from A3.
The OB is converted into an audio stream by the AOB system decoder unit 104, and the audio buffer 99,
Then, it is input to the audio decoder 100 and ready to be output as audio data. A when ready
The STC of the synchronization adjustment unit 102, which is the reference clock, is reset by the SCR of the head pack of the OB, and the audio data of AOB is output at the timing of PTS stored in the packet header. When the output of the AOB is started, the highlight information for the menu item displayed at the same time as the display of the still image and the first I picture and the I picture of the P_VOB by the instruction from the synchronization adjustment unit 102 are displayed. The sub-picture information is decoded and output. AO
Although it is not guaranteed that PTS is described in all the packets of B, the audio decoder
Audio data is output while complementing PTS.

During output of audio data, when the still image display mode of the audio program is Browseable, when the display timing of the DLIST corresponding to the P_VOB currently being displayed has reached the PTS of the audio being reproduced,
When the display time of the still image is finished, the next DLIST still image is reproduced. When the still image display mode of the audio program is Slide Show, if the audio program number of the next DLIST is not the same as the audio program number currently being reproduced, there is no DLIST to be newly displayed and the current still image of the current still image is displayed. Display continues, but next DLI
If the ST audio program number is the same as the currently playing audio program number, when the next DLIST display timing reaches the PTS of the audio being played, the next DLI
Play back the ST still image.

FIG. 66 is a flow of reproducing the second and subsequent still images. First, the transition mode of the end part of the DLIST of the still image currently displayed is acquired, and this is No Transit
If it is ion, stop displaying. No Tra
If the transition effect is not designated, that is, if the transition effect is designated, the still image is erased at the designated transition. This is Fade, etc., which becomes thinner gradually. However, this transitional effect may be ignored or replaced by another effect if the playback device does not have the ability.

When the currently displayed still image disappears, the start portion transition mode of DLIST of the next still image is acquired. If the transition mode is No Transition, the next still image is immediately displayed. No Transition
If not, that is, if the transition effect is designated, the next still image is displayed with the effect. In this way, still images are switched. At this time, not only the video information contained in P_VOB but also the highlight information and sub-picture information already read in the buffer are decoded.

The processing corresponding to the user's key operation is shown in FIG.
According to the determination flow of the key operation of 4. When the key operation involves changing the voice program, that is, N
extProgram (playback of the next audio program),
If PrevProgram (playback the previous audio program), playback of the specified audio program, playback of the audio program by a command after calling the menu, or change of the audio cell, change the audio cell of the audio program to be played. , And performs the reproduction process of the audio cell (FIG. 65).

When the user's key operation is to change only the still image, that is, NextDLIST (next DLI
If ST still image display), PrevDLIST (one previous DLIST still image display), designated DLIST still image display, etc. are specified only when the designated still image display mode is Browseable The still image is selected and the still image reproduction process (FIG. 66) is performed.

With other key operations, the designated operation is performed without changing the voice output or the still image display. Such operations include displaying the playback state and switching the time display mode. When another stream (VOB) is reproduced, such as when calling a menu, audio output and still image display are finished, and VOB decoding is switched to.

In this way, all the titles are reproduced and the process ends. In this case, depending on the setting of the player or the disc, one title may end to be reproduced, or the title may end to be reproduced and then a menu may be displayed.

Next, the control of the video decoder and the video buffer by the synchronization adjustment unit 102 will be supplemented below.

Since the display of the still picture is stored in the buffer in advance, it is managed depending on the position of the buffer where the still picture of the designated cell of the designated program is recorded or the number of the still picture. . That is, in accordance with an instruction from the synchronization adjustment unit 102, data is sent from the designated address of the video buffer 96 to the video decoder 87 and is displayed. In order to manage the information on the number of the image, the data from the beginning of the video buffer 96 is sent to the video decoder 87, the display is switched when the specified number is reached, and the sending of the data is stopped. When switching the display of a still image, a display effect by designating a transition mode can be added. The display effect switching time can be specified for each program before and after the still image is displayed.
According to this, when the playback device does not have the display function by the special effect, the display effect may be ignored and the simple switching playback may be performed.

In the synchronous mode (SlideShow),
The audio data is decoded by the audio decoder 100, and the still image, highlight and sub-picture are reproduced according to the "display timing". The synchronization adjustment unit 102 compares the reference time information of the system with the “display timing” from the system control unit 93 to perform synchronization control.

In this case, the user is prohibited from switching only the still image display. When displaying a still image by a slide show, it is effective to display lyrics along with music or display a part of a moving image as a still image. In the asynchronous mode (Browsable), the audio, the highlight, the sub-picture, and the still picture are not synchronized, but are reproduced individually. The highlight, sub-picture and still picture are synchronously controlled, and the audio data is continuously reproduced in real time based on the time information of the system. Switching of the still image in the asynchronous mode is performed by a user operation and a command.
The basic user operation is to continue playback of the audio program, send the display list (DLIST) forward and backward, return to the beginning, and send the audio program and display list (DLIST) forward or backward at the same time. is there. The command has a similar function. In this case, the “display timing” is the display duration of the still image, and if no user interaction is accepted within the “display timing”, the still image is displayed based on the next DLIST.

[0299] When displaying a still image in a browsable manner,
This is effective for switching and displaying the photo albums while playing music, and for switching and displaying various information such as the music explanations and information regarding the persons concerned.

Switching of the reproduction state between the synchronous mode and the asynchronous mode is performed by designating the still image display mode of the audio program information. In addition to this, in the still image display mode of the audio program information, randomly select from each program of each audio program of this audio title, and repeat the specified number of times, or do not play the same program (shuffle mode). Then, it is possible to specify whether to repeat the specified number of times.

The internal structure of the DVD player is not limited to this.

The AV decoder section 85c can have another configuration.

As shown in FIG. 67, P_VO for AOB
In place of the independent system decoder units for B and VOB, a single AOB, PVOB that also has these functions,
The VOB system decoder unit 109 may be provided. Since AOB, P_VOB, and VOB are input at different timings, it is possible to use a system decoder section that is almost the same as that defined by DVD-Video. According to this, it is used in DVD-Video except that the buffer capacity of each of the highlight buffer 94, the video buffer 96, and the sub-picture buffer 105 is increased, and a still image management mechanism is added to the control of the video buffer 96. The decoder can be used almost as is. Figure 6
The operation of the AV decoder section 85d shown in FIG. 7 is almost the same as the operation of the AV decoder section 85c shown in FIG.

Further, as shown in FIG. 68, P_V
The P_VOB buffer 106, which is a buffer for the OB stream, may be provided immediately before the AV decoder unit 85d. According to this configuration, the AV decoder unit 85d
Can use almost the same thing as DVD-Video including the capacity of each buffer. All P_VOB data to be read before reproduction of audio data is stored in the P_VOB buffer, and in this buffer, P_VOB corresponding to the reproduction order is dynamically multiplexed with the audio stream and transmitted to the AV decoder. Therefore, the AV decoder unit 8
In 5d, a processing speed slightly higher than the speed defined by the DVD-Video standard is required for the AOB, P_VOB, and VOB system decoder unit 109. Further, the stream must be supplied to the AV decoder unit 85d so that the audio buffer 99 does not underflow.

As described above, according to the third embodiment, MP
Since the program reproduction information describing the start time and the reproduction time of each audio data based on the reproduction start time of the first audio data of the EG2 stream is recorded in the management area as a part of the reproduction control information, It is possible to provide an optical disc that can reproduce high-quality digital audio data with video data added at a limited bit rate, and does not have an inexpensive playback device or a video data playback function. Also in the reproducing apparatus, the intervals of audio reproduction can be made constant, and the title creator can easily create data.

Also, while using high-quality audio, it is possible to display a plurality of still images, sub-videos, and menus in synchronism or asynchronously with the audio, which enables various expressions.

[0307]

According to the present invention, the reproduction order information that defines the order of the video streams reproduced in synchronization with the reproduction of the audio sequence is recorded on the recording medium. By changing the content of the reproduction order information, the content of the video stream reproduced in synchronization with the audio sequence can be easily changed. This provides the title creator with the freedom to create a variety of video streams for one audio sequence, and allows the user to create a desired video stream from among multiple video streams provided for one audio sequence. Provide the freedom to choose.

According to the present invention, the video reproduction mode information is recorded on the recording medium. Based on the video reproduction mode information, it is possible to switch whether or not the order of the video streams reproduced in synchronization with the audio sequence can be changed based on the interaction from the user. Further, the reproduction timing / reproduction time of the video stream reproduced in synchronization with the audio sequence can be switched by the video reproduction mode information. Accordingly, it is possible to provide the user with two different video reproduction modes, that is, a "slide show" mode or a "browsable" mode.

Further, according to the present invention, prior to the reproduction of the audio sequence, the video stream reproduced in synchronization with the audio sequence is buffered in the buffer provided in the reproducing device. By guaranteeing the range read from the recording medium to the buffer, reproduction is guaranteed in any reproducing apparatus. as a result,
The title creator can easily imagine the situation of the title reproduction, which facilitates the title creation. As a result, high quality titles can be supplied at low cost.

Furthermore, according to the present invention, since a stream that does not conform to the MPEG standard can be reproduced by a decoder for decoding the MPEG stream, a reproducing apparatus can be provided at low cost.

[Brief description of drawings]

FIG. 1A is an external view of an optical disc according to a first embodiment of the present invention.

FIG. 1B is a cross-sectional view of the optical disc according to the first embodiment of the present invention.

FIG. 1C is an enlarged cross-sectional view of the optical disc according to the first embodiment of the present invention.

FIG. 1D is a diagram showing pits formed on the optical disc according to the first embodiment of the present invention.

2A is a diagram showing a track structure of the optical disc shown in FIG. 1A. FIG.

FIG. 2B is a diagram showing a sector structure of the optical disc shown in FIG. 1A.

FIG. 3 is a diagram showing a logical structure of the optical disc shown in FIG. 1A.

FIG. 4 is a diagram showing a data structure of an audio manager.

FIG. 5 is a diagram showing a data structure of an audio title set.

FIG. 6 is a diagram showing a configuration example of an audio object (AOB).

FIG. 7 is a diagram showing a data structure of PGC information and Cell information.

FIG. 8 is a block diagram showing an internal structure of a DVD player which is a reproducing device.

FIG. 9 is a diagram showing an example of PGCs forming a title.

FIG. 10 is a diagram showing an example of program information.

FIG. 11 is a diagram showing an example of Cell information.

FIG. 12A is a diagram showing a procedure for reproducing sound without a still image.

FIG. 12B is a diagram showing a procedure for reproducing sound without a still image.

FIG. 13A is a diagram showing a procedure for displaying a still image and reproducing sound.

FIG. 13B is a diagram showing a procedure for displaying a still image and reproducing sound.

FIG. 14 is a diagram showing a conventional procedure for reproducing sound.

FIG. 15 is a diagram showing a schematic flow when performing program reproduction.

[Fig. 16] Fig. 16 is a diagram showing a flow when reproducing the first voice cell.

FIG. 17 is a diagram showing a flow when reproducing a silent cell.

FIG. 18 is a diagram showing a flow when reproducing a continuous cell.

FIG. 19 is a diagram showing a DVD device and peripheral devices thereof.

FIG. 20 is a diagram for explaining the configuration of a remote controller used when operating the DVD device.

FIG. 21 is a diagram showing a logical structure of an optical disc of a DVD, which is a multimedia optical disc, according to a second embodiment of the present invention.

FIG. 22 is a diagram showing the structure of an audio manager.

FIG. 23 is a diagram showing a data structure of AOB of a DVD which is a multimedia optical disc according to the second embodiment of the present invention.

FIG. 24 is a diagram showing an example of the configuration of an AOB.

FIG. 25 is a diagram showing a data structure of PGC information of a DVD which is a multimedia optical disc according to the second embodiment of the present invention.

FIG. 26 is a block diagram showing the internal structure of the DVD player according to the present embodiment.

FIG. 27 is a DVD having a system decoder unit that also serves as an independent system decoder unit for AOB P_VOB.
It is a figure which shows the structure of a decoder.

[Fig. 28] P which is a buffer for P_VOB stream
It is a figure which shows the structure of the DVD decoder which provided the _VOB buffer 106 just before the AV decoder part.

[Fig. 29] Fig. 29 is a diagram illustrating the relationship among PGCs, audio programs, cells, picture programs, picture cells, AOBs, and P_VOBs.

FIG. 30 is a diagram showing an example of PGCs forming a title.

FIG. 31 is a diagram showing the structure of a picture video object of a DVD which is a multimedia optical disc according to a second embodiment of the present invention.

FIG. 32 is a diagram showing an example of voice program information.

FIG. 33 is a diagram showing an example of voice program information.

FIG. 34 is a diagram for explaining the number of silence cell packs and the number of voice cell packs when the audio data is 48 kHz and 16 bits are sampled in 2 channels.

[Fig. 35] Fig. 35 is a diagram for describing picture cell information when the number of still image packs is 50.

FIG. 36A is a diagram showing a reproducing method in the case of reproducing a silent cell and a voice cell.

FIG. 36B is a diagram showing a reproducing method in the case of reproducing a silent cell and a voice cell.

FIG. 37 is a flowchart showing a method of reproducing one of the programs.

FIG. 38 is a flowchart showing a method of reproducing one of the programs.

FIG. 39 is a flowchart showing a method of reproducing one of the programs.

FIG. 40 is a diagram showing a video menu for allowing a user to select a title.

[Fig. 41] Fig. 41 is a diagram for describing the configuration of P_PCI.

[Fig. 42] Fig. 42 is a diagram for describing the configuration of P_DSI.

FIG. 43 is a diagram showing a logical structure of an optical disc.

FIG. 44 is a diagram showing a data structure of an audio manager (AMG).

FIG. 45 is a diagram showing a data structure of an audio still image set (ASVS).

FIG. 46 is a diagram showing a data structure of P_VOB.

FIG. 47 is a diagram showing a data structure of highlight information.

FIG. 48 is a diagram showing a data structure of an audio title set (ATS).

FIG. 49 is a diagram showing a data structure of PGC information (ATS_PGCI).

FIG. 50 is a diagram for explaining a still image display mode.

[Fig. 51] Fig. 51 is a diagram illustrating a data structure of an MPEG-compliant system stream.

FIG. 52 shows P_VOB, ASVU, ATS_PGCI,
It is a figure which shows the relationship of AOB.

[Fig. 53] Fig. 53 is a diagram illustrating an example of PGC information (ATS_PGCI).

FIG. 54 is a diagram showing an example of audio program information (ATS_PGI).

FIG. 55 is still image reproduction information (ATS_ASV_PBI)
It is a figure which shows the example of.

FIG. 56 is a diagram showing an example of cell information.

FIG. 57 is a diagram showing an example of an ASV search pointer.

FIG. 58 is a diagram showing an example of ASVU general information.

FIG. 59A is a diagram showing the relationship between the audio reproduction timing and the still image display timing in the “SlideShow” mode.

[Fig. 59B] Fig. 59B is a diagram illustrating the relationship between the audio reproduction timing and the still image display timing in the "Browseable" mode.

FIG. 60 is a diagram for explaining a still image display mode.

FIG. 61 is a block diagram showing an internal structure of a DVD player which is a reproducing device.

FIG. 62 is a diagram showing a schematic flow of reproducing PGC information.

FIG. 63 is a diagram showing a schematic flow of reproducing an audio program.

FIG. 64 is a diagram showing a schematic flow of determining a key operation.

FIG. 65 is a diagram showing a schematic flow of reproducing a voice cell.

FIG. 66 is a diagram showing a schematic flow of reproducing a still image.

FIG. 67 is a block diagram showing the internal structure of a DVD player which is a reproducing device.

FIG. 68 is a block diagram showing an internal structure of a DVD player which is a reproducing device.

FIG. 69 is a diagram illustrating the relationship between DLIST and P_VOB.

[Explanation of symbols]

1 Player 2 TV Monitor 81 Drive Mechanism 82 Optical Pickup 83 Mechanism Control Section 84 Signal Processing Section 85, 85a, 85b, 85c, 85d AV Decoder Section 86 System Decoder Section 87 Video Decoder 91 Operation Remote Control 92 Remote Control Receiver 93 System Control Section 94 Highlight buffer 95 Highlight decoder 96 Video buffer 98 Sub-picture decoder 99 Audio buffer 100 Audio decoder 101 Video composition 102 Synchronization adjustment section 103 P_VOB system decoder section 104 AOB system decoder section 105 Sub-picture buffer 106 P_VOB buffer 120 AOB, P_VOB System decoder section

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[Procedure amendment]

[Submission date] July 2, 2002 (2002.7.2)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

Title: Optical disc , reproducing apparatus and reproducing method

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

[0013]

The optical disc of the present invention comprises:
Multiple audio sequences and the multiple audio sequences
Management information (ATS) for managing playback of each sequence
I) and audio zone area (32c) for storing
Optical disc, wherein the plurality of audio sequence
Each of the at least one audio object
Information (AOB) and management information (ATSI)
Before included in each of multiple audio sequences
At least one audio object (AOB)
Playback order information (ATS_PGCI) indicating the playback order of
Including at least one audio object
Each (AOB) contains at least one pack.
Each of the at least one pack is
Audio data and the output timing of the audio data
The first timing information (PTS) indicating
The audio zone area (32c) has at least one static area.
The still image object (P_VOB) is further stored, and
Of at least one still image object (P_VOB)
Each of them includes still image data and includes the management information (AT
SI) corresponds to one of the plurality of audio sequences
Played in relation to the playback of the audio sequence
At least one still image object (P_VO
B) still image reproduction information (ATS_ASV_PBI)
And the still image reproduction information (ATS_ASV_PBI)
Thus indicated by said at least one still image object
Second timing indicating the output timing of the (P_VOB)
Information (DLIST), display timing mode and table
Display mode information indicating the display order mode (ASV_DMO
D) and further comprising:
The above is synchronized with the playback of the corresponding audio sequence.
At least one still image object (P_VOB)
The first display timing mode (SlideS
how) and the corresponding audio sequence
Said at least one still image object asynchronously live
The second display timing mode in which (P_VOB) is reproduced.
Either one of the two (Browsable), and
The display order mode includes at least one still image object.
The first display sequence mode in which
Allow at least one still image object to overlap
The second display sequence mode and the
At least one still image object must be
In any of the 3rd display order mode that is played back randomly
Yes, this achieves the above objectives. Re-invention
The live device plays the information stored on the optical disc described above.
A reproducing device for reproducing the optical disc from the optical disc.
Both one audio object (AOB) and
At least one still image object (P_VOB) and before
A reading unit for reading the management information (ATSI), and
At least one audio object (AOB)
And the at least one still image object (P_VO
B) a reproducing unit for reproducing the reproducing unit, the reading unit and the reproducing unit
And a control unit that controls the unit,
Before indicated by the indication mode information (ASV_DMOD)
The display timing mode is the first display timing mode.
Mode, the second timing information (DL
Of the still image at the timing indicated by IST).
Object (P_VOB) to update the display.
The raw part is controlled, and the control part controls the display mode information (A
SV_DMOD) the display timing indicated by
When the mode is the second display timing mode
By the second timing information (DLIST)
During the indicated period, the still image object (P_VO
The playback unit is controlled so that the display of B) is continued,
The control unit displays the display mode information (ASV_DMOD).
Therefore, the display order mode shown is the first display order.
The at least one still image when in ordinal mode
The playback part is controlled so that the objects are played sequentially.
The control unit controls the display mode information (ASV_D
MOD), the display order mode is
In the case of the display order mode of 2, the at least 1
Randomly play two still image objects, allowing duplication
And controlling the reproducing unit so that
Indicated by the display mode information (ASV_DMOD)
The display order mode is the third display order mode.
In this case, the at least one still image object
The reproduction unit is configured to prohibit duplication and be reproduced at random.
To achieve the above objective. The present invention
The playback method of is that the information stored on the optical disc
A reproducing method for reproducing, comprising:
At least one audio object (AOB) and before
Note at least one still image object (P_VOB)
And a read step for reading the management information (ATSI).
And the at least one audio object
(AOB) and the at least one still image object
(P_VOB) and a reading step,
A control step for controlling the output step and the reproduction step.
And the control step comprises:
The display tie indicated by the report (ASV_DMOD)
The minging mode is the first display timing mode
If the second timing information (DLIST)
Therefore, the still image object at the timing indicated
The playback step is performed so that the display of (P_VOB) is updated.
The display mode information.
The display timing indicated by (ASV_DMOD)
If the encoding mode is the second display timing mode,
If the second timing information (DLIST) is used,
, The still image object (P_V
OB) is controlled so that the display of (OB) is continued.
However, in the control step, the display mode information (ASV
The display order mode indicated by
In the case of the first display order mode, at least the above
So that one still image object is played in sequence
Controlling the reproducing step, and the controlling step,
Indicated by the display mode information (ASV_DMOD)
The display order mode is the second display order mode.
In this case, the at least one still image object
The playback step is set so that the playback is performed randomly to allow duplication.
Control of the display mode information,
The display order indicated by the report (ASV_DMOD)
If the mode is the third display order mode,
Note that at least one still image object is
Control the playback step so that it is played randomly
However, this achieves the above object.

[Procedure amendment 4]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Delete

[Procedure correction 6]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 7]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 8]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 9]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 10]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 11]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 12]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 13]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 14]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 15]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 16]

[Document name to be amended] Statement

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[Correction method] Delete

[Procedure Amendment 17]

[Document name to be amended] Statement

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[Procedure 18]

[Document name to be amended] Statement

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[Procedure Amendment 19]

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[Procedure amendment 20]

[Document name to be amended] Statement

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[Procedure correction 21]

[Document name to be amended] Statement

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[Procedure correction 22]

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[Procedure amendment 23]

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Claims (2)

[Claims] 1. An optical disc having an audio zone area (32c) for storing a plurality of audio sequences and management information (ATSI) for managing reproduction of each of the plurality of audio sequences, the plurality of audio sequences being provided. Each of which includes at least one audio object (AOB), and the management information (ATSI) includes playback order information (AOB) indicating a playback order of the at least one audio object (AOB) included in each of the plurality of audio sequences. ATS_PGCI), the at least one audio object (AO
Each of B) includes at least one pack, each of the at least one pack includes audio data and first timing information (PTS) indicating an output timing of the audio data, and the audio zone area ( 32c) is at least 1
One still image object (P_VOB) is further stored, and the at least one still image object (P_V
Each of OB) includes still image data, and the management information (ATSI) includes at least one still image object to be reproduced in association with reproduction of a corresponding audio sequence of the plurality of audio sequences. Still picture reproduction information (ATS_ASV_PBI) indicating (P_VOB), second timing information (DLIST) indicating output timing of the at least one still picture object (P_VOB) indicated by the still picture reproduction information (ATS_ASV_PBI), The display timing mode further includes display mode information (ASV_DMOD) indicating a display timing mode and a display order mode, wherein the display timing mode reproduces the at least one still image object (P_VOB) in synchronization with reproduction of the corresponding audio sequence. It That the first display timing mode (SlideShow) and said corresponding second display timing mode the asynchronous reproduction of the audio sequence at least one still picture object (P_VOB) is reproduced (Browsabl
e), the display order mode is a first display order mode in which the at least one still image object is sequentially reproduced,
Any of a second display order mode in which the at least one still image object is randomly reproduced while allowing duplication, and a third display order mode in which the at least one still image object is randomly reproduced while prohibiting duplication. An optical disc. 2. A reproducing apparatus for reproducing information stored on the optical disc according to claim 1, wherein the at least one audio object (AOB) and the at least one still image object (P_VOB) are recorded from the optical disc. Management information (ATSI)
And a reading unit for reading the at least one audio object (AO
B) and the at least one still image object (P_
VOB) and a control unit that controls the reading unit and the reproduction unit, and the control unit includes the display mode information (ASV_DMO).
If the display timing mode indicated by D) is the first display timing mode, then the second
Control unit controls the playback unit to update the display of the still image object (P_VOB) at the timing indicated by the timing information (DLIST) of the display mode information (ASV_DMO).
If the display timing mode indicated by D) is the second display timing mode,
During the period indicated by the timing information (DLIST) of the still image object (P_VOB), the playback unit is controlled to continue to display the still image object (P_VOB).
When the display order mode indicated by D) is the first display order mode, the playback unit is controlled so that the at least one still image object is sequentially played back, and the control unit The display mode information (ASV_DMO
When the display order mode indicated by D) is the second display order mode, the playback unit is controlled so that the at least one still image object is randomly played while allowing duplication, The control unit controls the display mode information (ASV_DMO).
If the display order mode indicated by D) is the third display order mode, the playback unit is controlled such that the at least one still image object is randomly played while prohibiting duplication. Playback device.