JP2002218397A - Information recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information recording medium for recording various AV stream which is suited to DVD-RAMs, etc., enabling simultaneous reproduction over a plurality of reproducing sections and the effect during reproducing, based on program chain information. SOLUTION: Effect kinds information and effect range information are recorded as program chain information or independent information, thereby executing reproduction based on the information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a readable and writable information recording medium, and more particularly to an information recording medium on which multimedia data including various formats such as moving picture data, still picture data and audio data is recorded. Regarding the medium. Furthermore, the present invention relates to an apparatus and a method for recording and reproducing information on and from such an information recording medium.

[0002]

2. Description of the Related Art In recent years, CD-ROMs, DVDs (Digital
An optical disk such as a Versatile Disc-ROM is used for recording video data (hereinafter, referred to as AV data) such as a movie in addition to being used as secondary storage of a computer. Further, as a recordable information recording medium, D
VD-RAM disks (hereinafter abbreviated as DVD-RAM) have been put to practical use.

In DVD, video and audio data are stored in MPEG format.
The data is compressed by two methods, and the compressed data is recorded in the form of a program stream (PS) or a transport stream (TS). Hereinafter, the conventional DVD
Will be described.

[0004] Program chain information in a DVD-ROM is information for designating the playback order of a program, which is a unit of playback of an MPEG stream. Using the program chain information enables various reproduction methods. More specifically, the information includes a reproduction order of unit data sections called cells and information on reproduction called navigation information.

In DVD-RAM, DVD-RAM
-Extending the program chain information of the ROM, the original program chain information generated by the device at the time of recording,
The user can have user-defined program chain information generated independently. As a result, a user-specific reproduction method can be determined.

[0006]

SUMMARY OF THE INVENTION In the DVD described above, the present invention extends the conventional program chain information to execute an effect in the case of switching within a cell or from one cell to the next, It is an object of the present invention to provide an information recording medium that enables simultaneous reproduction of a plurality of cells and effect synthesis when a plurality of cells are simultaneously reproduced.

[0007]

In order to solve the above problems, an information recording medium according to the present invention comprises an information recording medium having at least one area for recording a moving image or a still image, caption data, digital data, and audio data. A recording medium, cell information specifying the data as a plurality of playback sections, and a moving image or a still image determined by the cell information, subtitle data, digital data and audio data information recorded cells, Designates entry point information indicating an entry point that is a reproduction start address in a cell, a program formed by connecting the plurality of cells, program information including information on the program, and a reproduction order of the reproduction section. Chain information to be performed, and effect types indicating the types of effects to be performed at the start and end of each playback section. Information, characterized in that and a effect range information indicating the execution range when running the effect.

Here, in the information recording medium, the reproduction order specified by the program chain information specifies that one or a plurality of reproduction sections can be reproduced at the same time, and the reproduction device holds The maximum number of reproduction sections that can be simultaneously reproduced may be determined according to the number of decoders corresponding to the moving image or still image, caption data, digital data, and audio data information.

An information recording apparatus and an information recording method for recording the above information recording medium, an information reproducing apparatus and an information reproducing method for reproducing the above information recording medium, and a computer And a program storage medium for causing a computer to reproduce the information recording medium as described above.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) Optical Disk (1-1) Physical Structure of Recordable Optical Disk FIG. 1 shows the appearance and recording area of a DVD-RAM disk, which is a recordable optical disk according to an embodiment of the present invention. FIG. As shown in the figure, the DVD-RAM disk has a lead-in area at the innermost circumference, a lead-out area at the outermost circumference, and a data area between them. In the lead-in area, a reference signal necessary for stabilizing the servo in the recording / reproducing apparatus, an identification signal with another medium and the like are recorded. The same reference signal as the lead-in area is recorded in the lead-out area. The data area is divided into sectors (2 kbytes), which are the minimum access units. In the data area, management information for a file system, AV data, an AV data management file, non-AV data, and the like are recorded. The management information for the file system is information including the directory structure of the DVD-RAM, the recording position of the file, the free state of the data area, and the like, and is used when creating, writing, reading, or deleting a file.

In this embodiment, a description will be given of a video recording system in a DVD-RAM recorder. Note that the present invention can be implemented not only in the video recording system but also in the stream recording system.

[0012] AV data is recorded as a single file in units called video objects (hereinafter abbreviated as VOBs). The VOB is a file generated by one continuous recording by the optical disc recording apparatus, and corresponds to, for example, all or a part of a movie or all or a part of a television program. The VOB is composed of a plurality of video object units (hereinafter abbreviated as VOBU).

One VOBU is an AV data portion corresponding to about 0.4 to 1.0 seconds of the reproduction time of video data, and is a GOP (Group of Pictur) in the MPEG2 standard.
The video data section called e) is included. This GOP includes an I (Intra) picture (intra-frame coded picture), a P (Predictive) picture (inter-frame forward coded picture), and a B (Bidirectionally Pre-coded picture) in the MPEG2 standard.
dictive) picture (inter-frame bidirectional predictive coded image)
, At least one I-picture. This enables independent reproduction of the GOP. In particular,
In the case of special playback such as fast forward playback or fast reverse playback, or playback at a specified time, an I picture in a GOP is extracted as a playback target image, or a P or B picture to be played back as a reference image is extracted. Will be played.

The AV data management file is a DVD-RA
A file for managing all AV data in M,
Time map information and the like corresponding to VOBs on a one-to-one basis are recorded. The time map information is information that associates the playback time of the VOB with the recording position. Further, the AV data management file includes program chain information (hereinafter, PGC information), which is information indicating the playback order of VOBs.

An error correction process for a sector is performed for every 16 sectors. In this embodiment, ECC (Error Co
sector group to which rrecting code is assigned (16 sectors)
Is called an ECC block.

The DVD-RAM has a data area divided into a plurality of zone areas in order to realize a rotation control called Z-CLV (Zone-Constant Linear Velocity) in a recording / reproducing apparatus. FIG. 2A shows a DVD.
FIG. 5 is a diagram showing a plurality of zone areas provided concentrically in a RAM. As shown in the figure, the DVD-RAM is divided into 24 zone areas of zone 0 to zone 23. Here, the zone area refers to a group of tracks accessed at the same angular velocity. In the present embodiment, one zone area includes 1888 tracks. The rotational angular velocity of the DVD-RAM is set for each zone area so as to become faster in the zone on the inner peripheral side, and is kept constant while the optical pickup accesses in one zone. Thereby, DVD-RA
The recording density of M is increased, and the rotation control in the recording device / reproducing device is facilitated.

FIG. 2B is an explanatory diagram in which the lead-in area, the zone areas 0 to 23, and the lead-out area shown concentrically in FIG. 2A are arranged in the horizontal direction. The lead-in area and the lead-out area have a defect management area (DMA: Defect Management Area) therein. The defect management area refers to an area in which position information indicating the position of a sector in which a defect has occurred and alternative position information indicating in which of the above-mentioned alternative areas a sector replacing the defective sector exists are recorded. .

Each zone area has a user area inside thereof, and has a spare area and an unused area at the boundary. The user area refers to an area that can be used as a recording area by the file system. The replacement area is an area used when a defective sector exists.
The unused area is an area that is not used for data recording.
An unused area is provided for about two tracks. The unused area is provided because the sector address is recorded at the same position on an adjacent track in the zone, but the ZC
In the LV, since the recording position of the sector address is different in the track adjacent to the zone boundary, it is to prevent the sector address from being erroneously determined.

As described above, there are sectors not used for data recording at the zone boundaries. For this reason, the DVD-R is designed to continuously show only the sectors used for data recording.
AM is a logical sector number (LSN: Logical) in order from the inner circumference.
Sector Number) is assigned to a physical sector in the user area. As shown in FIG. 2C, an area for recording user data, which is constituted by sectors to which the LSN is assigned, is called a volume space.

As shown in FIG. 2D, volume structure information for treating the disk as a logical volume is recorded on the inner and outer peripheral portions of the volume space. The portion excluding the inner and outer volume structure information areas in the volume space is an area where user files are recorded, and is called a partition space. In the partition space, a logical block number (LBN: Logical Block Number) is assigned to each sector from the first sector.

FIG. 3 is a diagram hierarchically showing a relationship between a sector and an ECC block in a zone area. As shown in the figure, each zone area includes a plurality of ECC blocks. It should be noted here that, in the recording apparatus, non-AV data is allocated in areas in units of sectors, whereas AV data is allocated in units of continuous recording areas that can guarantee continuous reproduction.
The continuous recording area referred to here is an EC that does not straddle a zone boundary.
A continuous sector of a certain size (about 7 Mbytes) or more, which is an area of an integral multiple of the C block. However, if the AV data is
In the case of a plurality of extents, the last extent may be smaller than the certain size. The reason that the continuous recording area does not straddle the zone boundary is that if the straddle straddles the zone, the rotation angular velocity of the optical disc is changed, so that continuous reading cannot be performed. In addition, the reason why it is set to an integral multiple of the ECC block is that it is the minimum unit of the ECC processing.

FIG. 4 shows an AV recorded on a DVD-RAM.
5 shows an example of data, non-AV data, and a directory.

In the figure, an elliptical figure represents a directory, and a rectangle represents a file. The root directory has a directory called DVD_RTAV, other directories, and non-AV data of other files.
The DVD_RTAV directory is VR_MOVIE.
VRO, VR_STILL. VRO, VR_AUDI
O. A plurality of AV files called VRO and VR_MAN
GR. IFO, VR_MANGER. AV called BUP
And a data management file. AV file VR
_MOVIE. VRO, VR_STILL. VRO, V
R_AUDIO. VRO is recorded in the data area.

(1.2) AV Data Management File FIG. 5 shows the AV data management file (VR_
MANGR. FIG. 3 is an explanatory diagram hierarchically showing recorded contents of an IFO). As shown in FIG.
V file management table 820, PGC information table 8
30. FIG. 6 shows the logical connection between these tables and VOBs.

The PGC information 830 includes a DVD-RA
Information indicating a list of titles recorded in M, information specifying a plurality of data to be simultaneously reproduced, transmittance information when synthesizing main video information and sub-video information, processing reproduction at the beginning and end of each cell Effect information, which is information, is included. Here, the title includes a program recorded by the user in the recording device, a title created by editing by the user, and the like.

The AV file management table 820 contains
This is information indicating the correspondence between the playback time of the file, that is, the VOB, and the recording position.
1, 822... Are recorded. The VOB information 821, 822,...
VOB general information indicating information unique to the OB, and time map information for associating the playback time of the VOB with the recording position.

The VOB general information 821a includes a VOB identifier for indicating which VOB the VOB information corresponds to,
This is information indicating the playback time of the corresponding VOB. The time map information 821b includes the above-described first time table and second time table. As shown in FIG. 6, the first time table (time map table) includes, for each playback time at a certain time interval (for example, 10 seconds) on the time axis starting from the beginning of the VOB, for each playback time. It is a table in which time maps # 1, # 2,... Indicating the recording position (sector address) of the VOBU at the reproduction time are arranged.

Second time table (VOBU table)
As shown in FIG. 6, is a table in which VOBU maps including the VOBU playback time and the VOBU data size are arranged in the order of the playback time from the beginning of the VOB. PGC
The information table 830 includes a plurality of PGC information (PGCI).
831, 832...

PGCI831, 832... Are VOs specified by a set of a start time and an end time.
This is a table in which information (referred to as cells) indicating video sections in B are arranged in the order of reproduction time, and represents a series of AV data obtained by logically connecting the video sections indicated in the cells in the arrangement order.

An MPEG program stream (in the case of video recording) cell on the information recording medium,
When the MPEG transport stream (in the case of stream recording) cells are mixed, the PGC may be restricted so that these cells are not mixed.

FIG. 7 shows the data structure of the PGCI. PGCI includes PGC general information (PGC_GI), program information (PGI), and cell information search pointer (C
I_SRP) and cell information (CI). PGC
_GI includes the number of programs (PG_Ns) and the number of cell information search pointers (CI_SRP_Ns).
The GI records information on the program.
The CI includes cell general information (C_GI), cell entry point information (C_EPI), and effect type (C_EP_EF_T) for each entry point in the cell.
P), and the effect range (C_EP_EF_RG) of the effect for each entry point in the cell.

Cell attribute information (C_ATB) is stored in C_GI.
(Not shown). C_ATB includes information indicating whether the cell is a moving image cell, a still image cell, a caption data cell, a digital data cell, or an audio data cell.

The types of effects specified by C_EP_EF_TP are fade-in, fade-out, wipe, dissolve, α-blend, audio-only reproduction, audio cut, and the like. Alternatively, information indicating which of the two reproduction sections is targeted is also included.

C_EP_EF_RG is a range (S) that shifts the reproduction section behind the corresponding entry point forward and overlaps with the reproduction section before the corresponding entry point.
L_RG) and the effect effect duration range (TR_RG).

Here, SL_RG and TR_RG are time,
Alternatively, it is specified by a recording address.

If the decoder has recorded a stream whose contents can be understood, the range specification unit may be specified by the data packet arrival time (ATS) in the stream.

C_EP_EF_TP, C_EP_EF_
The type of effect, the target playback section, the amount of overlapping playback section, and the effect effect generation range are determined by RG as shown in FIG.

Here, it is specified that a plurality of playback sections are played back simultaneously by shifting the backward playback section forward by SL_RG. The number of playback sections that can be played back simultaneously is limited by the number of decoders of the playback device. Is done. For example, in the case of a playback device having two moving image decoders and two audio decoders, a maximum of two moving images and two sounds can be reproduced simultaneously. If the SL_RG has information requesting simultaneous playback of a number exceeding the limit of the playback device, the playback section exceeding the limit is not played.

At this time, SL_RG takes a value greater than or equal to 0. If it is 0, continuous playback of the playback section is performed. If it takes a value greater than 0, simultaneous playback of a plurality of playback sections is performed.

At the time of reproduction, the reproduction device performs all C_EP_EF_TP, C
By reading _EP_EF_RG in advance and generating information of the playback section, simultaneous playback of a plurality of playback sections becomes possible.

For example, when there are two pieces of information that are reproduced simultaneously, one piece of information is a moving picture and the other piece is a sound, the dubbing effect can be obtained by selecting an appropriate effect. This is subtitle data, and by selecting an appropriate effect, an effect such as α blending of subtitles can be obtained.

Although the type of effect and the range of effect are specified for each entry point, the effect type and the effect range may be specified not for each entry point but for each cell or program. Note that the effect information and the effect range may be recorded in the PGI together with the information for each cell instead of the CI.

Note that the effect information and the effect range are not CIs but effect maps (E
MAP) (FIG. 9). This EMA
With respect to P, the playback device transmits all C_EP_EF_TP and C_EP_EF included in the EMAP of the data to be played back.
By reading _RG in advance and generating information of the playback section, simultaneous playback of a plurality of playback sections becomes possible.

Here, when a cell is partially deleted by editing recorded AV data, etc., the effect information (C_EP_EF_TP,
C_EP_EF_RG) can be dealt with by deleting the SL_RG and TR_RG so that the section to be reproduced simultaneously with the partially deleted section does not overlap with the section before the partially deleted section by the partial deletion. Equipment shall be adjusted.

Each of the cells 831a, 831b,... Includes an AV file identifier, a VOB identifier, and a set of a start time and an end time indicating a video section.

In the example shown in FIG. 6, a series of AV data corresponding to one title is composed of PGC information 831 → cell 83
1a to 831c → VOB information 821, 822 → VOB
They are specified in the order of # 1, # 2. In this example, AV data for one title is composed of two VOBs.
Although it is composed of # 1 and # 2, the simplest example of PGC information such as a newly recorded title is 1 title → 1 PGC information → 1 cell → 1VOB information → 1VOB
Thus, one title is composed of one VOB.

FIG. 10 is a diagram showing the data structure of an AV file, that is, a VOB. As shown in FIG.
Consists of a plurality of VOBUs. The VOBU is approximately 0.4 to 1.0 including at least one I (Intra) picture.
This is an AV data section including compressed video data of about seconds and other audio data, and includes a pack sequence in which a video pack (V_PCK) and an audio pack (A_PCK) are interleaved. One pack is a packed packet in MPEG2, includes a pack header, a packet header, video data / audio data, and has a size of 2 kbytes, which is the same as the sector size.

(2) Recording / Reproducing Apparatus Next, an optical disc recording / reproducing apparatus according to the present invention will be described with reference to the drawings.

(2-1) Overall System FIG. 11 shows an example of the configuration of a system using the optical disk recording / reproducing apparatus according to the present embodiment.

This system includes an optical disk recording / reproducing apparatus 10 (hereinafter, referred to as a DVD recorder 10), a remote controller 6 for operating the same, a display 12 connected to the DVD recorder 10, and an antenna 11. DVD
The recorder 10 uses the DVD-RAM as an optical disc.
Is attached, compresses the audio / video data contained in the analog broadcast wave received through the antenna 11,
Recorded on a DVD-RAM as a file,
-Decompress the compressed audio / video data recorded in the RAM and output the video signal and the audio signal to the display 12.

(2-2) Hardware Configuration of DVD Recorder 10 FIG. 12 is a block diagram showing a hardware configuration of the DVD recorder 10. The DVD recorder 10 includes a control unit 1, an MPEG encoder 2, a disk access unit 3,
It has an MPEG decoder 4, a video signal processing unit 5, a remote control 6, a bus 7, a remote control signal receiving unit 8, and a receiver 9. The control unit 1 includes a CPU 1a, a processor bus 1
b, a bus interface 1c and a main memory 1d, and by executing a program stored in the main memory 1d, controls the entire apparatus such as recording, reproduction, and editing of AV data in the DVD recorder 10. In particular, the control unit 1
In recording V data, when an AV file (VOB) is recorded, VOB information corresponding to the recorded VOB,
It generates PGC information and the like, and records or updates the AV data management file. Further, when reproducing the AV data, the control unit 1 obtains an address based on the VOB information and reproduces the section specified by the start time and the end time in the cell included in the PGC information in the AV data management file. In particular, in the case of special reproduction, the address of a reference image existing every fixed time (for example, 5 seconds, -5 seconds, etc.) is sequentially obtained based on VOB information, and fast forward reproduction and fast reverse reproduction are performed. ing.

The MPEG encoder 2 compresses the audio / video signal contained in the analog broadcast wave received by the receiver 9 through the antenna 11 into an MPEG stream. The disk access unit 3 has a track buffer 3a therein, and under the control of the control unit 1, records the MPEG stream input from the MPEG encoder 2 on the DVD-RAM via the track buffer 3a.
The MPEG stream is read from the D-RAM and output to the MPEG decoder 4 via the track buffer 3a.

The MPEG decoder 4 reads the MP read from the DVD-RAM by the disk access unit 3.
The video signal processing unit 5 that expands the EG stream and outputs video data and audio signal as a result of the expansion performs signal processing for converting the video data from the MPEG decoder 4 into a video signal for the display 12.

The remote control signal receiving section 8 receives a remote control signal transmitted from the remote control 6 as shown in FIG.
The control unit 1 is notified of what kind of user operation has been performed. As shown in FIG. 11, the DVD recorder 10 has a configuration on the premise that the DVD recorder 10 is substituted for a conventional stationary home VTR. Not limited to this configuration, DVD
If the RAM is also used as a recording medium for a computer, the following configuration may be used. That is, the disk access unit 3 is connected to a computer bus as an DVD-RAM drive via an IF called SCSI or IDE. The components other than the disk access unit 3 in FIG. 2 are realized by executing an OS and application programs on computer hardware.

FIG. 14 is a block diagram showing the configuration of the MPEG encoder 2. As shown in the figure, the MPEG encoder 2 includes a video encoder 2a, a video buffer 2b storing the output of the video encoder, an audio encoder 2c, an audio buffer 2d storing the output of the audio encoder, and encoding in the video buffer 2b. Video data and audio buffer 2d
And a system time clock (STC) unit 2f that multiplexes the encoded audio data in the encoder and generates a synchronization clock for the encoder 2.
And an encoder control unit 2 for controlling and managing these
g.

The encoder control unit 2g passes information such as GOP information and picture information to the control unit 1 in FIG. 12 every time a VOBU is generated, particularly during encoding. Here, the GOP information includes the number of packs of the VOBU and the number of packs of the first I picture in the VOBU. The pack referred to here is a video pack (V_PACK), an audio pack (A_P
ACK), which has a fixed length of 2 kbytes, which is the same as that of the sector. Therefore, in this embodiment, the GOP information is VOB
It means the number of sectors occupied by U and the number of sectors occupied by the first I picture in the VOBU.

FIG. 15 is a block diagram showing the structure of the MPEG decoder 4. As shown in FIG.
Includes a demultiplexer 4a for separating an MPEG stream into a video stream and an audio stream, a video buffer 4b for temporarily storing the separated video stream, and a video decoder 4c for decoding the video stream stored in the video buffer 4b. An audio buffer 4d for temporarily storing the separated audio stream, an audio decoder 4e for decoding the audio stream stored in the audio buffer 4d, and an STC (system time clock) unit 4f for generating a synchronization clock. An adder 4g for adding an offset to a clock; and a selector for selecting one of a synchronous clock and a synchronous clock with an offset and supplying the same to a demultiplexer 4a, an audio decoder 4e, and a video decoder 4c. Composed of a h~4j.

(2-3) Functional Block Diagram FIG. 16 is a functional block diagram showing the configuration of the DVD recorder 10 by function. Each function in the figure is realized by the CPU 1a in the control unit 1 executing the program in the main memory 1d to control the hardware shown in FIG.

In FIG. 16, the DVD recorder 10 includes a disk recording unit 100, a disk reading unit 101, a file system unit 102, a recording / editing / playback control unit 105, a user IF unit 106, an AV data recording unit 110, an AV data editing unit 120, It comprises an AV data reproducing unit 130. The disk recording unit 100 includes the file system unit 10
When a logical sector number and logical data (2048 bytes) in units of one or more sectors are input from 2, the data is recorded. However, actually, the disk recording unit 100
Reads and writes logical data on a disk in units of ECC blocks (16 sectors). If the logical data is less than 16 sectors, the ECC block is read once, subjected to ECC processing, and then recorded.

When the logical sector number and the number of sectors are input from the file system unit 102, the disk reading unit 101 reads the sector data and transfers it to the file system unit. However, actually, reading is performed in units of ECC blocks, and only necessary sector data is transferred to the file system unit through ECC processing. This is equivalent to 16 bits per ECC block when reading AV data.
This is because reading is performed in sector units to reduce the overhead as in the case of the disk recording unit 100.

The file system unit 102 mainly stores
It has an AV file system unit 103 that writes and edits V files, and a common file system unit 104 that performs common processing between AV files and non-AV files.
0, upon receiving a command related to writing or reading of a file from the AV data reproducing unit 130, file management is performed using the sector of the optical disk as a minimum unit.

The recording / editing / playback control unit 105 is a part for controlling the whole of the DVD recorder 10. In particular, the recording / editing / playback control unit 105 controls a guidance display for prompting a user operation, receives a user operation corresponding thereto via the user IF unit 106, Recording of new AV data, reproduction or editing of recorded AV data, etc., according to the operation is performed by the AV data recording unit 110, A
A request is made to the V data editing unit 120 and the AV data reproduction unit 130.

The user IF section 106 receives a user operation from the remote controller 6 and notifies the recording / editing / playback control section 105. The control data management unit 107 reads out an AV data management file, which is non-AV data, onto the main storage 1d, and immediately provides information in response to a request from each unit. A
The V data recording unit 110 receives a recording request from the recording editing / playback control unit 105 and issues a command necessary for the requested recording to the AV file system unit 103. Therefore, the AV data recording unit 110
1 and an AV file management information generation unit 112.

The AV data input unit 111 converts an image signal and an audio signal into MPEG data, that is, encodes in real time, and records the encoded MPEG data on a disk as an AV file. Output to Also,
When encoding, the AV data input unit 111
The number of packs constituting the VOBU and the number of packs of the first reference picture are calculated for each VOBU of the EG data, and the obtained value is used as GOP information in a memory (main storage 1).
d) and passed to the AV file management information generation unit 112 after recording the AV file.

The AV file management information generation unit 112
When the recording of the AV file by the V data input unit 111 ends, the A
VOB information, PGC information, and a title search pointer corresponding to the V file are generated as AV file management information, the AV data management file held in the control data management unit 107 is updated, and the updated AV data management file is stored in a file system. The information is recorded on the DVD-RAM via the unit 102.

The AV data editing section 120 receives an editing request from the recording / editing / playback control section 105 and issues a command required for editing to the AV file system section 103. AV
The data playback unit 130 receives a playback request from the recording / editing / playback control unit 105, and issues a command required for the requested playback to the AV file system unit 103.

(3) Recording / Reproduction Next, the DVD recorder 10 records (3-1) recording of an AV file, (3-2) generation and recording of an AV data management file, and (3-3) recording of user-defined PGC information. Generation, recording, and (3-4) reproduction of AV data will be described.

(3-1) Recording Processing of AV File Recording processing includes manual recording and scheduled recording. Manual recording refers to a recording process that is started immediately after setting a few items when the “record” key on the remote control is pressed by the user without setting a reservation time. Scheduled recording refers to a recording process when a start time and an end time are set in advance. For example, when the user presses a record button on the remote controller 6, a guidance image 200 as shown in FIG. When the user presses “1” or “select” in the guidance image 200, a guidance image 201 for setting recording conditions (in this example, recording time and recording quality) is displayed. The user sets the recording condition “recording time” by moving the focus to “unlimited” or “specified time” using the cursor button of the remote controller 6 and pressing the “select” button again. When “specified time” is selected, the display is switched to a guidance image for inputting time using the numeric keypad. When the setting of the designated time is completed, the guidance image 201 is displayed again.

The "recording quality" of the recording condition includes three types of bit rate and resolution of MPEG data: high image quality, standard, and time priority. Each (bit rate, resolution)
Is high quality (6Mbps, 720 * 480 pixels), standard is (3M
bps, 360 * 480 pixels), time priority (1.5Mbps, 360 * 240
Pixel). Now, as a recording case, “unlimited” and “time priority” are selected in the guidance image 201,
"Recording" of the remote control after shifting to the guidance image 202
Suppose the button was pressed. Thereby, the recording / editing / playback control unit 105 instructs the AV data recording unit 110 to record,
The V data recording unit 110 starts recording processing.

(3-2) Generation and Recording of AV Data Management File Upon receiving notification from the AV data input section 111 that the recording of the AV file has been completed, the AV file management information generation section 112 VOB information and original PGC information are generated based on the GOP information stored in the memory (main storage 1d) and the VOBU number corresponding to the start address of the new continuous recording area where the AV file is recorded. Record.

(3-3) Generation of user-defined PGC information
Recording A method of generating user-defined PGC information separately from the PGC information generated in (3-2) will be described. The user inserts an entry point at a point where an effect effect is to be inserted for each cell of each program. For the inserted entry point, a range of how much to shift the rear reproduction section forward is specified, and the effect effect duration is specified. Next, the type of effect to be executed is selected, and it is determined whether designation for all entry points has been completed. If not completed, the process returns to the specification of the range of how much to shift the rear reproduction section forward. If completed, effect information is recorded in the user-defined PGC information or EMAP, and the processing ends.

(3-4) Playback of AV Data In the playback process, when the user presses “2” or “select” on the guidance image 200 shown in FIG. 17, the guidance image 201 is displayed, and the user further presses “1”. When the user presses “select”, the recording / editing / playback control unit 105 notifies the AV data playback unit 130 of the title (or title search pointer number). Here, when the use of the user-defined PGC information or EMAP is specified, the effect information (C_EP_EF_TP, C_EP) of the data to be reproduced.
_EF_RG) is read in advance to generate playback section information, and playback is performed. Here, when the use of the user-defined PGC information or EMAP is not specified or does not exist, the reproduction is performed based on the original PGC information.

[0073]

The information recording medium of the present invention is an information recording medium provided with at least one area for recording a moving image or a still image, caption data, digital data and audio data. Cell information to be designated as a section, a moving image or a still image determined by the cell information, a cell in which subtitle data, digital data, and audio data information are recorded, and an entry point that is a reproduction start address in each of the cells. Entry point information, a program formed by connecting the plurality of cells, program information including information on the program, program chain information for specifying a reproduction order of the reproduction section, a start point of each reproduction section, Effect type information indicating the type of effect to be performed at the end of playback, and Characterized in that and a effect range information indicating a range of lines.

Here, in the information recording medium, the reproduction order specified by the program chain information specifies that one or a plurality of reproduction sections can be reproduced at the same time, and the reproduction equipment holds The maximum number of reproduction sections that can be simultaneously reproduced may be determined according to the number of decoders corresponding to the moving image or still image, caption data, digital data, and audio data information.

An information recording apparatus and an information recording method for recording the above information recording medium, an information reproducing apparatus and an information reproducing method for reproducing the above information recording medium, and a computer And a program storage medium for causing a computer to reproduce the information recording medium as described above.

According to this configuration, simultaneous reproduction with effects of the plurality of reproduction sections and effect processing reproduction display such as fade-in, fade-out, wipe, dissolve, etc. of the start and end of each cell can be performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an appearance of an optical disc and a recording area according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a recording area of an optical disc in the embodiment of the present invention.

FIG. 3 shows an ECC with a sector according to the embodiment of the present invention.
Diagram showing relationship with blocks

FIG. 4 is an explanatory diagram of a hierarchical directory structure of AV files and non-AV files according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram of recorded contents of an AV data management file (VR_MANGR.IFO) according to the embodiment of the present invention.

FIG. 6 is a diagram showing a logical connection relationship between an AV file management table, a PGC information table, and a VOB according to the embodiment of the present invention.

FIG. 7 is a diagram showing a configuration of PGC information according to the embodiment of the present invention.

FIG. 8 shows C_EP_EF_ in the embodiment of the present invention.
TP, C_EP_EF_RG (SL_RG, TR_R
Figure showing the correspondence between G) and the actual playback section

FIG. 9 is a diagram illustrating a structure of an EMAP according to an embodiment of the present invention.

FIG. 10 is a diagram showing a data structure of an AV file, that is, a VOB according to the embodiment of the present invention.

FIG. 11 is a diagram showing a configuration example of a system using an optical disc recording / reproducing device according to the present embodiment.

FIG. 12 is a block diagram showing a hardware configuration of the DVD recorder 10 according to the embodiment of the present invention.

FIG. 13 is a diagram showing a remote controller according to the embodiment of the present invention.

FIG. 14 is a block diagram showing a configuration of an MPEG encoder 2.

FIG. 15 is a block diagram showing a configuration of an MPEG decoder 4.

FIG. 16 is a functional block diagram showing the configuration of the DVD recorder 10 by function.

FIG. 17 shows a guidance image.

[Explanation of symbols]

 Reference Signs List 1 control unit 1a CPU 1b processor bus 1c bus interface 1d main memory 2 MPEG encoder 2a video encoder 2b video buffer 2c audio encoder 2d audio buffer 2e system encoder 2f STC unit 2g encoder control unit 3 disk access unit 3a track buffer 4 MPEG decoder 4a Demultiplexer 4b Video buffer 4c Video decoder 4d Audio buffer 4e Audio decoder 4f STC unit 4g Adder 4h, 4i, 4j Selector 5 Video signal processing unit 6 Remote control 7 Bus 8 Remote control signal receiving unit 9 Receiver 10 DVD recorder 11 Antenna 12 Display 100 Disk recording unit 101 Disk reading unit 102 File system unit 103 AV § filesystem unit 104 common file system unit 105 recorded and edited playback control unit 106 the user IF unit 107 controls the data management unit 110 AV data recording unit 111 AV data input unit 112 AV file management information generating unit 120 AV data editing unit 130 AV data reproducing unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) H04N 5/85 H04N 5/92 H (72) Inventor Kazuhiko Nakamura 1006 Kazuma Kazuma, Kadoma City, Osaka Matsushita Electric Industrial F term in the company (reference)

Claims (2)

[Claims] 1. An information recording medium having an area in which at least one moving image or still image, caption data, digital data, and audio data are recorded, wherein cell information specifying the data as a plurality of reproduction sections; A cell in which moving images or still images determined by the cell information, caption data, digital data, and audio data information are recorded; entry point information indicating an entry point that is a reproduction start address in each of the cells; Program information including information on the program, program chain information for specifying the playback order of the playback section, and types of effects to be performed at the start and end of each playback section And an effect type information indicating an execution range when the effect is executed. Information recording medium, characterized in that and a preparative range information. 2. In the information recording medium, the reproduction order specified by the program chain information specifies that one or a plurality of reproduction sections can be reproduced at the same time, and the reproduction device has 2. The information recording medium according to claim 1, wherein the maximum number of reproduction sections that can be simultaneously reproduced is determined according to the number of decoders corresponding to the moving image or still image, caption data, digital data, and audio data information. .