JP2000113652A - Method for reproducing information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information reproducing method in which convenience for reproducing a melody can be enhanced by performing prereserved reproduction effectively even when a melody is reproduced from a DVD recording a navigation data for reproducing menu information for selecting a melody to be reproduced along with the melody. SOLUTION: The method for reproducing record information from a DVD recording record information including a plurality of melodies, and a navigation data for controlling reproduction of the record information comprises a step for preserving and setting a order for reproducing every melody, a step for detecting a navigation data among the record information, and a step for invalidating the navigation data and continuing reproduction of melody in the preserved reproduction order (step S77) if a navigation data corresponding to one melody and indicating transfer to a menu screen is detected (step S73; Y) during reproduction of one melody in the preserved reproduction order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of an information reproducing method for reproducing recorded information from a recording medium such as an optical disk in which the recorded information is recorded in advance, and more particularly, to a method for reproducing the recorded information. The present invention belongs to the technical field of an information reproducing method of preliminarily setting a reproduction order for each information unit and reproducing the recorded information.

[0002]

2. Description of the Related Art In recent years, DVDs, which are optical disks having a dramatically increased recording capacity compared to conventional general optical disks, such as CDs (Compact Discs), are becoming popular. In this DVD, because of its large recording capacity,
For example, it is possible to compress all the recording information corresponding to one movie and then record the information in one DVD. Further, it is also possible to compose the corresponding subtitles of the one movie using a plurality of languages, and to record them.

Here, in the recording information recorded on the DVD, in addition to an image or the like which is the recording information itself, reproduction control information for variously changing the reproduction state of the recording information includes the recording information. It is recorded with.

[0004] More specifically, the reproduction control information includes, for example, reproduction control information for changing the output image and the like in accordance with the selection of a viewer who wants to view the recorded information, or a different camera. Playback control information for continuously playing back only an image selected by the viewer from among a plurality of images shot at an angle is recorded.

For example, in the case of a DVD dedicated to karaoke, when one song is completed, playback control information for playing back menu information for selecting a song to be played next corresponds to the one song. It is recorded in the last part of the record information. Furthermore, a DV for music recording that is not dedicated to karaoke
Even in the case of D, the reproduction control information for reproducing the menu information as described above may be recorded at the end of one song.

It is well known that when performing a karaoke performance, a so-called reserved performance function is generally used, in which a song to be performed later is set in advance or while another song is being reserved. However, in the above-mentioned conventional karaoke-only DVD, execution of the reserved performance function is prohibited. This is because, when a plurality of reserved songs are reserved, if the reproduction control information for reproducing the menu information as described above is recorded at the end of a certain song, regardless of the reproduction order of the reserved songs, The process shifts to the reproduction of the menu information. At this point, it is impossible to reproduce the reserved songs in the same order, so that the reservation setting function itself was originally prohibited.

[0007] On the other hand, in the case of reproducing the music other than the karaoke, the order of the music to be reproduced may be reserved in advance, but in the conventional music recording DVD, the reproduction order of the music is reserved. However, if the playback control information indicating that the above-described menu information should be played back is recorded at the end of a certain song, the menu information is played back according to the playback control information. Will be interrupted. For this reason, even in the conventional music recording DVD, the execution of the reserved performance function has been prohibited.

[0008]

However, the inability to use the reserved performance function in the DVD dedicated to karaoke reduces the convenience of the karaoke, thereby reducing the entertainment of the karaoke and the DVD dedicated to the karaoke. There is a problem that the convenience of the method may be reduced.

[0009] Further, in the DVD for karaoke only, when the reservation setting of the music to be reproduced is made in advance, the menu information is used except for canceling the reservation setting and newly selecting the music. It is usually unnecessary.

On the other hand, the inability to use the reserved performance function even for a DVD for music recording leads to a similar problem in that the convenience as a DVD may be significantly reduced.

Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide reproduction control information that reproduces menu information for selecting recording information to be reproduced. Provided is an information reproducing method capable of effectively performing reserved reproduction even when reproducing the recorded information from a recording medium recorded together with the recording information to be recorded, thereby improving the convenience of information reproduction. Is to do.

[0012]

According to an aspect of the present invention, there is provided an apparatus for reproducing recorded information and navigation data set in advance for controlling reproduction of the recorded information. DVD on which control information is recorded
In an information reproducing method for reproducing the recording information from a recording medium such as a recording step, a reservation step of reserving and setting a reproduction order for each information unit such as a song set in the recording information in advance, and A detecting step of detecting reproduction control information, and selecting one of the reproduction control information and the information unit corresponding to the one information unit during reproduction of the one information unit according to the preset reproduction order. When difference reproduction control information that is the reproduction control information including transition information indicating transition to the menu screen of
A reproduction control step of invalidating the difference reproduction control information and continuing reproduction of the information unit in the reproduction order set in the reservation.

Therefore, when the difference reproduction control information including the transition information indicating transition to the menu screen during reproduction of the information unit according to the preset reproduction order is detected, the difference reproduction control information is invalidated and the reservation setting is made. Since the reproduction of the information unit is continued in the specified reproduction order, even if the transition information is detected during the reproduction of the information unit, all the contents of the original reservation setting can be executed.

According to a second aspect of the present invention, in the information reproducing method of the first aspect, the recording information includes an information cell which is a basic unit in reproducing the recording information. The reproduction control information includes cell reproduction order information in which the reproduction order of the information cells is set in advance, and the information unit is an order defined by the cell reproduction order information. Is configured to be an information block such as a title constituted by the information cell to be reproduced by the information cell.

Therefore, when a reservation is made in units of information blocks at the time of setting the reservation, transition information indicating that the display is to be shifted to the menu screen during reproduction of the information blocks indicated by the reproduction order set in the reservation is detected. However, the contents of the original reservation setting can be executed to the end.

According to a third aspect of the present invention, in the information reproducing method according to the first aspect, the recording information includes an information cell which is a basic unit in reproducing the recording information. The reproduction control information includes cell reproduction order information in which the reproduction order of the information cells is set in advance, and the information unit is reproduced in an order defined by the cell reproduction order information. Sub-information blocks obtained by further subdividing the information blocks formed by the information cells, and sub-blocks such as chapters formed by the information cells reproduced in the order defined by the cell reproduction order information. It is configured to be an information block.

Therefore, when a reservation is made in units of sub-information blocks at the time of setting the reservation, the transition information indicating that a transition to the menu screen is being made during the reproduction of the sub-information blocks indicated by the set reproduction order. Even if it is detected, the contents of the original reservation setting can be executed to the end.

According to a fourth aspect of the present invention, there is provided an information reproducing method according to any one of the first to third aspects, wherein the reproducing control step comprises the steps of:
When the reproduction of the information unit based on the set reproduction order is completed, the reproduction of the recording information based on the reproduction control information is restored.

Thus, after the end of the scheduled reproduction, the recorded information can be reproduced based on the original reproduction control information.

[0020]

Next, a preferred embodiment of the present invention will be described with reference to the drawings. In the embodiment described below, music as an information unit recorded on the karaoke-only DVD is normally reproduced, a plurality of music is reserved in advance, and these are reproduced in the order of the reservation. The following describes an embodiment in which the present invention is applied to an information reproducing apparatus capable of performing such operations.

(I) Embodiment of DVD Before describing the embodiment of the information reproducing apparatus, the format and logical configuration of a general DVD on which recording information including video information and audio information is recorded, and The operation will be described with reference to FIGS.

First, a recording format on a DVD of recording information including video information and audio information (including music information; the same applies hereinafter) will be described with reference to FIG.

As shown in FIG. 1, a general DVD 1 as a recording medium has a lead-in area LI at its innermost periphery and a lead-out area LO at its outermost periphery. The video information and the audio information have a plurality of VTSs (Video Titles) each having an ID (identification) number.
le Set) 3 (VTS # 1 to VTS # n).

Here, the VTS is related (the number of audio information and sub-picture information (information of sub-pictures such as subtitles in a movie) contained in the VTS, and the attributes such as specifications and supported languages are the same). It is a set (collection) of titles (one work such as a movie that the producer intends to present to the viewer). More specifically, for example, for the same movie, different languages A plurality of movies having self and the like are recorded as titles, respectively, or even if the same movie is used, a movie version and a special version are recorded as different titles.

The video manager 2 is recorded at the head of the area where the VTS 3 is recorded. The information recorded as the video manager 2 includes, for example, a menu indicating the name of each title, information for preventing illegal copying, an access table for accessing each title, and the like, and the video recorded on the DVD 1. Information relating to the entire information and audio information is recorded.

Next, one VTS 3 has a plurality of VTSs each having an ID number starting from the control data 11.
It is divided into OBs 10 and recorded.

Here, a portion constituted by a plurality of VOBs 10 is called a VOB set (VOBS). This V
The OB set is a VOB set for the actual part in order to distinguish between the control data 11 which is another data constituting the VTS 3 and a plurality of VOBs 10 which are entities of the video information and the audio information.

The control data 11 recorded at the head of the VTS 3 includes PGCI (Progra), which is various information relating to a program chain described later, which is a logical division of a plurality of cells (cells will be described later).
m Chain Information) is recorded.

In addition, in each VOB 10, in addition to the control information, substantial portions of video information and audio information (video or audio itself other than the control information) are recorded.

Further, one VOB 10 is composed of a plurality of cells 20 each having an ID number.

Here, one VOB 10 includes a plurality of cells 2
0, and one cell 20
Does not straddle the two VOBs 10.

Next, one cell 20 is composed of a plurality of VOB units (VOBU) 30 each having an ID number.

Here, the VOB unit 30 is a unit of information including each of video information, audio information and sub-video information.

Then, one VOB unit 30 has a VO
A navigation pack 41 in which control information for controlling video data and the like included in the B unit 30 is stored, video data 42 as video information, audio data 43 as audio information, and sub-video information as And the sub-picture data 44. At this time, the video data 42, the audio data 43, and the sub-picture data 44 are collectively referred to as presentation data.

Here, only video data is recorded as video data 42, and only audio data is recorded as audio data 43. As the sub-picture data 44, only graphic data such as characters and graphics as sub-pictures is recorded. There are eight types of audio that can be recorded on DVD1, and 32 types of sub-video that can be recorded.
It is stipulated by the standard that it is a type.

Further, the reproduction time corresponding to one VOB unit 30 (one navigation pack 41 and one navigation pack 4
The playback time corresponding to the data recorded between the next navi-pack 41) is recorded so as to have a length of 0.4 second or more and 1 second or less. Here, the reason why the playback time corresponding to one VOB unit 30 is set to 0.4 seconds or more is as follows.
This is for reducing the storage capacity of a buffer memory called a PCI buffer in an information reproducing apparatus described later.
Seconds or less are defined by MPEG2 (Moving Picture Exp
erts Group 2) (the video information and the like recorded on the DVD1 are compressed and recorded based on the MPFG2 method). The permissible delay for the decoding process of the video data 42 specified in the standard This is because the time is set to one second. Therefore, the navigation pack 41 is always detected once every 0.4 to 1 second during reproduction.

Further, in one VOB unit 30,
The navi-pack 41 always exists at the beginning, but each of the video data 42, the audio data 43, and the sub-picture data 44 does not necessarily need to exist in the VOB unit 30. The order can be set arbitrarily.

Here, each section of the video data 42, the audio data 43, and the sub-picture data 44 shown in FIG. That is, one VOB
In the unit 30, the video data 42, the audio data 43, and the sub-picture data 44 are divided and recorded in packs P, respectively. Is called an audio pack, and the pack P on which the sub-picture data 44 is recorded is called a sub-picture pack.

Further, the pack header recorded at the head of each pack P contains the read start time on the reproduction time axis to read the data contained in each pack P from the buffer memory in the information reproducing apparatus described later. SCR shown
Read start time information called (System Clock Reference) is recorded. For each of the packs P,
Usually, the video data 42, the audio data 43, or the sub-picture data 44 is recorded for each packet which is a recording unit obtained by further subdividing the pack P. In the DVD 1 according to the present embodiment, one pack P generally corresponds to one pack. It is composed of packets.

Finally, the navigation pack 41 stores search information for searching for a video or audio to be reproduced and displayed (specifically, an address on the DVD 1 where the video or audio to be reproduced and displayed is recorded). DSI (Data
Search Information) Data 51 and DSI Data 5
PCI (Presentation), which is information related to playback / display control when displaying video or audio retrieved based on
Control Information) data 50. At this time, the DSI data 51 and the PCI data 50
Are the DSI packet and the PC as the packet PT, respectively.
An I packet is formed and recorded.

Further, all the video data 42 included in one VOB unit 30 is composed of one or a plurality of GOPs (Gr.
oup Of Picture).

The PCI data 50 includes, for a selection item selected by the viewer, highlight information defining the display and operation when the item is selected. With the highlight information, for example, in an image (a so-called menu screen) displaying an item to be selected by the viewer, a change in screen display corresponding to the item selection, a display position to be changed in response to the selection, and a selected display position. A command for the item (a command indicating an operation to be performed on the selected item) is set.

Here, the image information for displaying the frame, the selection button, and the like necessary for constructing and displaying the menu screen is the sub-picture data 4 which is the above-mentioned sub-picture information.
Recorded as 4.

Further, the GOP is the smallest image unit that can be reproduced independently, which is defined in the MPEG2 standard, which is an image compression system employed when recording video information on the DVD 1 in this embodiment. And at the beginning of each GOP, a PTS indicating a playback time on a playback time axis on which video data 42 included in the GOP is to be displayed.
Playback display time information called (Presentation Time Stamp) is recorded.

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

Further, the outline of the GOP will be described with reference to FIG. FIG. 2 shows an example of a plurality of frame images constituting one GOP. FIG. 2 shows a case where one GOP 52 is composed of 12 frame images (the number of frame images included in one GOP 52 is not constant in the MPEG2 system). The frame image indicated by "I" is called an I-picture (Intra-coded picture), and refers to a frame image in which a complete frame image can be reproduced only by its own image. Further, the frame image indicated by the symbol “P” is a P picture (Predictive-cod
ed picture: a forward prediction coded image), which is a prediction image generated by decoding a difference from a prediction image compensated and reproduced based on an already decoded I picture or another P picture. . Further, the frame image indicated by the code “B” is a B picture (Bidirectionally predictive-
coded picture: a bidirectional predictive coded image), not only an already decoded I picture or P picture, but also a D picture.
It refers to a predicted image reproduced using a temporally future I picture or P picture recorded in VD1 or the like for prediction. In FIG. 2, the prediction relationship (interpolation relationship) between the pictures is indicated by arrows.

In the MPEG2 system used for the DVD 1 according to the present embodiment, each GOP 52
Employs a variable rate method in which the amount of data contained in the data is not constant. That is, when each picture included in one GOP 52 corresponds to a moving image with fast motion and the correlation between the pictures is small, the amount of data for configuring each picture increases, and The data amount included in the GOP 52 is also large. On the other hand, when each picture included in one GOP 52 corresponds to a moving image with little movement, and when the correlation between the pictures is large, the amount of data for constituting each picture is reduced, and one picture is included. G
The data amount included in the OP 52 is also reduced.

In the recording format having the hierarchical structure shown in FIG. 1 described above, each section is set by the manufacturer according to his or her intention and recorded.
By performing reproduction on the basis of the following logical structure for each of these sections, various types of reproduction can be realized.

Next, a logical format (logical structure) combining information recorded by the divisions shown in FIG. 1 will be described with reference to FIG. Note that the logical structure shown in FIG. 3 does not actually record information on the DVD 1 in that structure, but combines the data (particularly the cells 20) shown in FIG. 1 with the logical structure shown in FIG. Information for reproduction (access information or time information, etc.) is recorded on the DVD 1, especially in the control data 11.

For the sake of clarity, the description will be made from the lower hierarchy of FIG. 3. By selecting and combining a plurality of cells 20 in the structure described in FIG. 60 is logically constructed based on the intention of the producer.

The program 60 is also the smallest logical unit that can be accessed by a command by the system control unit in the information reproducing apparatus described later by identifying the section.

The creator can also define one or a plurality of the programs 60 as a minimum unit that can be freely selected and viewed by the viewer, and this unit is defined as PTT (Part of Title). ). Here, generally, the PTT may be referred to as a chapter.

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

Here, regarding the number of one cell 20,
When the cell 20 is handled in the format shown in FIG. 1, it is handled as a cell ID number (in FIG. 1, the cell ID
Shown as #. 3), when handled in the logical format shown in FIG. 3, they are handled as cell numbers in the order of description in the PGCI described later.

Next, by combining a plurality of programs 60, one PGC (Program Chain) 61 is logically constructed based on the intention of the producer. The above-mentioned PGCI is defined in units of the PGC 61, and the PGCI includes a reproduction order of the cells 20 for each program 60 when reproducing each program 60 (the program 6
A unique program number is assigned for each 0. ), The address of the recording position of each cell 20 on the DVD 1, the number of the first cell 20 to be reproduced in one program 60, the reproduction method of each program 60 [(DV of this embodiment)
When recording information in D1, at the time of reproduction, random reproduction (random reproduction using random numbers, the same program 60 may be reproduced plural times), shuffle reproduction (random reproduction using random numbers similar to random reproduction) As for the reproduction, the same program 60 is reproduced only once, and the same program 60 is not reproduced more than once.) Or loop reproduction (reproducing one PGC 61 many times). The creator can select and play back one or a combination of loop playback and random playback or shuffle playback for each PGC 61. ] And various navigation commands (this is a command for the creator to define the reproduction order and the like in the reproduction of the presentation data for each PGC 61 or cell 20, and is hereinafter appropriately referred to as a navigation command).

Although the recording position of the PGCI on the DVD 1 is in the control data 11 (see FIG. 1) as described above, if the PGCI is a PGCI related to a menu in the video manager 2, the recording position of the PGCI is The recording position is in control data (not shown) included in the video manager 2.

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

Further, in one PGC 61, it is possible to reuse the cell 20 described in the description of the program 60 (that is, to use the same cell 20 by different PGCs 61).

For the cell 20 to be used, the DV
In addition to the method of reproducing the cells 20 in the order recorded in D1 (reproduction of continuously arranged cells), the cell 20 is reproduced irrespective of the order recorded in the DVD1 (for example, the cell 20 recorded later is first The creator can select a method (eg, reproduction of non-continuously arranged cells).

Next, one title 62 is logically constituted by one or a plurality of PGCs 61. This title 62
Is a unit corresponding to one movie, for example, and is complete information that the producer wants to provide to the viewer of the DVD1. Here, each of the above PTTs constituting one title 62
Are assigned PTT numbers (hereinafter, referred to as PTTN) in the order included in the one title 62.

One VTS 63 is logically constituted by one or a plurality of titles 62. This VTS6
The titles 62 included in each of the titles 3 have common attributes. For example, a movie in a different language corresponds to a single movie in the same language.

Further, information corresponding to one VTS 63 shown in FIG. 3 corresponds to information included in one VTS 3 shown in FIG. That is, all information logically included in the VTS 63 shown in FIG.
3 will be recorded.

Note that the video manager 2 shown in FIG. 1 includes video manager information including search information (search pointer) for searching for each title 62, and the video manager information further includes Contains table information called a title search pointer table. Then, in the title search pointer table, the number of title search pointers (ie,
Title search pointer table information describing the number of titles 62 included in the DVD 1 and the like, and PTTs (each including one or a plurality of programs 60) included in each title 62 are included. A title search pointer in which the number and the like are described (a title search pointer for each title) is included.

By specifying the information divided in the structure shown in FIG. 1 by the producer based on the logical format described above, the title (movie or the like) to be viewed by the viewer is formed.

Here, the video manager information described above,
The PGCI, PCI data 50 and DSI data 51 are collectively referred to as navigation data as reproduction control information.

A group of one or more PGCs 61 for reproducing the title 62 produced by using the title VOBS included in the VTS 63 is called a title domain. A collection of one or more PGCs 61 for playing back menus or messages created using VTS is called a video manager menu domain and
One or more PGCs 61 for playing back menus created using the menu VOBS contained in 63
Are referred to as a video title set menu domain. The video manager menu domain and the video title set menu domain are collectively called a menu domain.

Further, a dummy PGC 61 recorded for determining a PGC 61 to be reproduced first when the DVD 1 is inserted into an information reproducing apparatus described later is referred to as a first play domain.

Here, the logical format shown in FIG. 3 is a logical format in a general DVD 1,
In the DVD for exclusive use of karaoke according to the present embodiment, as shown in FIG. 4A, in principle, one title 62 as an information block in the above logical format is composed of only one PGC 61, and The hierarchical structure is set such that the PGC 61 is a song of karaoke.

However, the above is only a principle. For example, in an area where a video for a title back or the like is recorded in a DVD dedicated to karaoke, FIG.
As shown in (b), a plurality of chapters 60 as sub-information blocks may be included under one title 62. Further, depending on the type of music included in karaoke, one chapter may be included. Is not formed, but one chapter is formed by one music, and one title 62 is formed by a plurality of chapters each including one music.

(II) Embodiment of Information Reproducing Apparatus Next, an embodiment of an information reproducing apparatus for reproducing the recorded information recorded from the above-described DVD 1 dedicated to karaoke will be described with reference to FIGS.

FIG. 5 is a block diagram showing a schematic configuration of the information reproducing apparatus of the embodiment, and FIG. 6 is a block diagram for explaining a data flow of a portion of the information reproducing apparatus according to the embodiment. 7 to 12 are flowcharts each showing the operation of the information reproducing apparatus according to the embodiment.

As shown in FIG. 5, the information reproducing apparatus S of the embodiment comprises a pickup 70, a signal processing section 71, a video reproducing section 72, an audio reproducing section 73, a system control section 74, and an operation section 75. , A display section 76, a servo circuit section 77, and a servo mechanism section 78.

Next, the outline operation will be described.

First, the pickup 70 irradiates a reproduction light beam to the DVD 1 on which each music for karaoke is recorded, and detects a detection signal Sp corresponding to an information pit on the DVD 1 based on the reflected light. Is generated and output to the signal processing unit 71.

Then, the signal processing section 71 outputs the detection signal S
Various processing is performed on p to generate a video signal Sv including video information corresponding to the music, and the video playback unit 72
And an audio signal Sa including audio information corresponding to the music is generated and output to the audio reproducing unit 73. At this time, the signal processing unit 71 performs a generation process of the video signal Sv and the audio signal Sa based on a command signal Scp from a system control unit 74 described later.

At the same time, the signal processing unit 7
1 extracts the reproduction control information corresponding to the navigation data from the detection signal Sp and outputs it to the system control unit 74 as a reproduction control information signal Spc.

Here, specifically, the signal processing unit 71
, The detection signal Sp is applied to RF (Radio Freq
uency) signal processing, 8/16 modulation, error correction, variable transfer rate control, descrambling processing, data separation processing (processing for separating video signal Sv and audio signal Sa), and the like.

Next, based on the control signal Scv from the system control unit 74, the video reproduction unit 72 performs an encoding process, a D / A conversion process, and the like on the input video signal Sv, and performs a video output signal Svout. Is generated and output to a display or the like (not shown).

On the other hand, based on a control signal Sca from the system control unit 74, the audio reproduction unit 73 encodes and D / A-converts the input audio signal Sa.
The audio output signal Saout is generated by performing a conversion process or the like, and is output to a speaker or the like (not shown).

In parallel with these processes, the servo circuit 7
7 generates a drive signal Sd for driving the servomechanical unit 78 based on the control signal Scs and the command signal Scp from the system control unit 74, and outputs the drive signal Sd to the servomechanical unit 78. At this time, as the drive signal Sd, a drive signal Sd for correctly matching the focal position of the light beam with the position of the information pit on the DVD 1 to be detected is generated.

The servo mechanism section 78 drives an objective lens (not shown) for condensing a light beam in a direction perpendicular or horizontal to the information recording surface of the DVD 1 based on the drive signal Sd, so-called tracking servo. In addition to performing the control and the focus servo control, the irradiation position of the light beam is controlled so that the pickup 70 outputs the detection signal Sp corresponding to the desired music corresponding to the command signal Scp.

Next, the system control section 74 controls the control signal Sc based on an operation signal Sin and a reservation signal Sr described later.
In addition to generating and outputting v, Sca, and Scs, respectively, it generates the command signal Scp including the navigation command based on the reproduction control information Spc, and outputs the command signal Scp to the signal processing unit 71 and the servo circuit unit 77. At this time, the reservation information on the reserved music desired by the user, the operation information on the operation of the information reproducing apparatus S as a whole, and the like are stored in the operation section 75 as the reservation signal Sr and the operation signal Sin based on the user's operation, respectively. The control signal or command signal Scp, which has been input to the unit 74 and corresponds to the reservation signal Sr and the operation signal Sin, is generated. The operation state and the like of the information reproducing apparatus S associated with these processes are displayed on a display unit 76 composed of a liquid crystal display or the like based on a display signal Sdp from the system control unit 74.

Next, the flow of each data when the operation according to the present embodiment is executed in the information reproducing apparatus S shown in FIG. 5 will be described with reference to FIG.

First, as described above, the DVD 1 contains
The navigation data ND and the presentation data PD are respectively recorded, and these are respectively detected as the detection signals Sp.

Then, the navigation manager NM in the system control section 74 (performing the actual reproduction control based on the navigation data ND) receives the desired signal indicated by the operation signal Sin from the user U based on the navigation data ND. Signal processing unit 7 to reproduce the music of
1. Controls a presentation manager PM (extracts and reproduces desired video data 42 and the like from the presentation data PD) corresponding to the video reproducing unit 72 and the audio reproducing unit 73, and also outputs a command signal from a reservation routine R to be described later. The presentation manager PM is controlled in such a manner that the music that has been reserved in accordance with Scp is reproduced in the order of the reservation setting.

At this time, the presentation manager PM outputs the video output signal Svout and the audio output signal Saout as reproduction outputs corresponding to the operation signal Sin.
To the user U, and among the data included in the presentation data PD, a reproduction control information signal Spc corresponding to reproduction information indicating reproduced data.
To the reservation routine R in the system control unit 74.

Then, the reservation routine R executes a process described later based on the reproduction control information signal Spc in order to perform a reserved reproduction of the music indicated by the reservation signal Sr from the user U, and executes a command signal Scp including the navigation command. Is output to the navigation manager NM.

Next, the reservation reproduction process according to the embodiment will be described with reference to FIGS. The processing shown by the following flowcharts is processing mainly executed by the system control unit 74.

First, the overall processing in the reservation reproduction processing of the embodiment will be described with reference to FIG.

In the reserved reproduction process, as shown in FIG. 7, first, it is determined whether or not the power of the information reproducing apparatus S is turned off (step S1). S1; Y) All the processing is terminated as it is, and if it is not turned off (step S1; N),
Next, the recording mode of the music on the DVD 1 (the hierarchical structure of the recording information on the DVD 1) is determined (Step S).
2). In this step S2, each song recorded on the DVD 1 is recorded as one title 62 corresponding to one song, or a plurality of chapters 60 including only one song are gathered into one title 62. Is determined, whereby the reservation signal Sr from the operation unit 75 is input to the reservation input indicating the title 62 or the chapter 60
Is determined to be a reservation input.

Next, it is determined whether or not a reproduction start other than the reserved reproduction is input from the operation unit 75 (step S3).
If the input has been made (step S3; Y), the reproduction of the music indicated by the input is started (step S3).
4) Go to step S5.

On the other hand, if it is determined in step S3 that no reproduction start other than the reserved reproduction has been input (step S3; N), the flow directly proceeds to step S5.

Then, in step S5, the operation unit 7
In 5, the user operates a reservation key and a number key (not shown) to specify a music to be reserved and reproduced.
The reproduction of the reserved music is started only when another title is not currently being reproduced (step S5).

Then, it is confirmed whether or not an operation for canceling the reservation has been performed on the operation unit 75. If the operation for canceling the reservation has been performed, the reservation has been cancelled. The reproduction is continued as it is (step S6).

Next, when the scheduled reproduction is not being executed, the reproduction of the music whose reproduction has been started in step S4 is continued as it is. Then, the next song that has been reserved is searched for and its reproduction is started (step S7).

Next, detailed processing of each step in the main routine shown in FIG. 7 will be described in order with reference to FIGS.

First, the process of determining the hierarchical structure in the recording information in the DVD 1 in step S2 will be described in detail with reference to FIG.

As shown in FIG. 8, in the process of determining the hierarchical structure of the recorded information, it is first determined whether or not the DVD 1 has been replaced (step S10). If the DVD 1 has not been replaced (step S10). N), it is determined that there is no need to change the hierarchical structure of the recorded information of the DVD 1 that has already been determined, and the process proceeds directly to step S3, while if it has been replaced (step S10; Y), the hierarchical structure of the recorded information is newly added. It is determined that it is necessary to determine
The above various control data is read out (step S1).
1). The control data read out at this time includes the video manager 2 described above.
The title search pointer table information in which the number of title search pointers, which is the number of titles 62 recorded in the VD1, is described, and the title search pointer in which the number of recorded chapters is described for each title 62 is a system. It is read by the control unit 74.

Next, it is determined whether or not the number of recognized titles 62 is "6" or more (step S12).
If it is equal to or greater than "6" (step S12; Y), the numeral input on the numeric keys of the operation unit 75 included in the reservation signal Sr subsequently input to the system control unit 74 is used as the numeral indicating the title 62. Recognize (step S1
4) Go to the next step S3.

On the other hand, if it is determined in step S12 that the number of titles 62 is not "6" or more (step S12).
12; N), it is determined whether or not the maximum value of the next recognized chapters (= PTT; the same applies hereinafter) (the number of chapters for each title 62) is “6” or more (step S13). If the number of chapters is not equal to or greater than "6" (step S13; N), the flow shifts to step S14 to recognize the number input with the numeric keys as the number indicating the title 62, and shifts to step S3.

Next, in the determination of step S13, if the maximum value of the number of recognized chapters is equal to or more than "6" (step S13; Y), it is included in the reservation signal Sr subsequently input to the system control unit 74. Recognize the number input with the number key being set as a number indicating a chapter (step S15) and shift to step S3.

Next, steps S12 to S15 described above are performed.
The significance of recognizing the meaning of the number input on the numeric keypad (that is, whether to indicate the title 62 or the chapter 60) by the above processing will be described with reference to FIG.

As described above, the karaoke DVD 1
In many cases, one title 6 per song
2, one song 60 forms one chapter 60 and one title 62 may be formed by combining a plurality of chapters including the one music.

That is, as shown in FIG. 4B, when there are six or more titles 62 each composed of only one song and only one title 62 having two chapters 60 is included, Since most of the titles 62 are formed from only one song, in the search and the reproduction reservation processing at the time of reproduction, it is better to recognize the number input with the numeric keys as the number indicating the number of the title 62 in the reproduction processing. Is preferred for convenience.

On the other hand, even if the number of titles 62 is less than 6, when there is only one title 62 including a small number (less than 6) of chapters 60 each consisting of only one song,
Although the number of songs included is small, it is considered that the title 62 is a DVD dedicated to karaoke in which one title 62 corresponds to one song. Even in this case, the number input with the numeric keys is used for the search and reproduction reservation processing for each song. It is better to recognize it as a number indicating the number of the title 62.

Therefore, in the process of step S2, when the number of titles 62 is 6 or more (step S12;
Y), it is considered that the DVD 1 is a DVD 1 dedicated to karaoke, in which one song corresponds to one title 62 and has many recorded songs, and recognizes the number input with the numeric keys as the number indicating the number of the title 62. (Step S14).

On the other hand, if the number of titles 62 is less than 6 (step S12; N) and the maximum number of chapters 60 for each title 62 is less than 6 (step S13; N), the DVD 1 It is assumed that one song is the DVD 1 dedicated to karaoke with a small number of recorded songs corresponding to one title 62, and the number input with the numeric keys is recognized as the number indicating the number of the title 62 (step S).
14).

Further, if the number of titles 62 is less than 6 (step S12; N) and the maximum number of chapters 60 for each title 62 is 6 or more (step S13; Y), the DVD 1 One song is considered to be the DVD 1 dedicated to karaoke with many recorded songs corresponding to one chapter 60, and the number input with the numeric keys is recognized as the number indicating the number of the chapter 60 (step S15). ).

The threshold value “6” in step S12 or S13 corresponds to the DV for which karaoke is recorded as a music piece.
This is a number determined based on the general number of music pieces in D1.

Also, steps S12 and S12 in FIG.
The threshold “6” in 13 is not limited to this, and for example, any natural number between 5 and 10 can be used as the threshold.

Next, the reservation execution processing in step S5 will be described in detail with reference to FIGS.

First, as shown in FIG. 9, in the reservation execution processing, it is first determined whether or not a reservation key for starting the reservation input processing has been operated on the operation unit 75 (step S40). When the reservation key is not operated (step S40; N), it is determined that the reservation reproduction process of the embodiment is not executed, and the process directly proceeds to step S6. When the reservation key is operated (step S40; Y), The information reproducing apparatus S is set to the reservation input mode (step S41), and a music piece to be reproduced is input from the operation unit 75 (step S42).

In this step S42, specifically, a title number or a chapter number indicating a music piece to be reserved is input using the numeric keys, and the input title number or chapter number actually exists in the DVD1. When the title number or the chapter number is indicated, the input title number or the chapter number is stored at the end of the reserved music list in the memory (not shown), and then the input of the next reserved music is repeated.

When the input of the reserved music is completed (step S
42) Then, the input music is reproduced in the reserved order (step S43). Details of the operation in step S43 will be described later in detail.

When the reservation has been executed, the reservation input mode set in step S41 is canceled (step S44), and the flow advances to the next step S6.

Next, the reservation execution processing in step S43 will be described in detail with reference to FIG.

As shown in FIG. 10, in the reservation execution process, first, it is determined whether or not the information reproducing apparatus S is in the reservation execution mode (step S50). (Step S50; Y) The process directly proceeds to Step S44. On the other hand, when the reservation execution mode is not set (Step S50; N), the reservation execution mode is set (Step S51), and then reproduction of some title 62 or chapter 60 is performed. It is determined whether the reproduction is in progress or the reproduction is completed (or paused) (step S5).
2) When the reproduction is completed (or paused) (step S52; Y), step S is executed to start the reserved reproduction.
54, on the other hand, if playback is in progress (step S
52; N) Then, it is determined whether or not a domain other than the title domain (for example, a menu domain) is being reproduced (step S53).

If the title domain whose reproduction has been started in step S4 or step S54 described later is being reproduced (step S53; N), the process directly proceeds to step S44, while a domain other than the title domain is being reproduced. (Step S53;
Y), the reproduction is interrupted, the first reserved music in the reserved music list in the memory (see step S42) is searched from the DVD 1 to start the reserved reproduction, and the reproduction is started (step S54), step S44. Move to.

Note that the search for the reserved music is started in step S54 because the search is permitted in the detected navigation data ND.
Alternatively, the search is prohibited but the interruption of the reproduction is permitted, and the search is performed after the interruption. At this time, if neither search nor interruption is prohibited, the scheduled reproduction itself cannot be performed. In this case, the scheduled execution mode is canceled.

Next, the reservation canceling process in step S6 will be described in detail with reference to FIG.

As shown in FIG. 11, in the reservation canceling process, first, it is determined whether or not the information reproducing apparatus S is in the reservation execution mode (step S60). (Step S60; N) It is determined that the reproduction is normal, and the process directly proceeds to Step S7. On the other hand, when it is in the reservation execution mode (Step S6).
0; Y) Next, it is determined whether or not a clear key (not shown) in the operation unit 75 (clear key for canceling the scheduled playback) has been operated (step S61). Step S61; Y), assuming that the scheduled reproduction is to be ended, the flow shifts to step S69 to release the reservation execution mode, and shifts to the next step S7.

If it is determined in step S61 that the clear key has not been operated (step S61; N),
Next, it is determined whether or not a stop key (not shown) in the operation unit 75 has been operated (step S62). If the stop key has been operated (step S62; Y), it is determined that the scheduled reproduction is to be ended, and step S69 is performed. Via step S
Move to 7.

On the other hand, if it is determined in step S62 that the stop key has not been operated (step S6).
2; N) Then, by operating a menu key (not shown) on the operation unit 75, a disc menu (a type of menu information included in the menu domain and stored in the information reproducing apparatus S itself in advance (specifically, a menu) In
Menus recorded on the DVD 1 other than those in which no menu information is recorded on the DVD 1 or menus used for making various settings for the information reproducing apparatus S. ) Is displayed (step S63), and if it is displayed (step S63:
Y), assuming that the scheduled reproduction is to be ended, step S
The process moves to the next step S7 via 69.

On the other hand, if it is determined in step S63 that the disc menu is not displayed (step S63).
63; N) Then, it is determined whether or not the reservation for each chapter is currently being executed (step S64). If it is not being executed (step S64; N), the flow shifts to step S67, while it is being executed. When there is (step S64;
Y) Next, it is determined whether or not a chapter search (detecting the beginning of each chapter) has been executed based on the scanning in the operation unit 75 (step S65). If the chapter search has been performed (step S65) S65; Y), it is determined that the reservation for each music piece should be released, and the process shifts to the step S7 via the step S69.

Next, if it is determined in step S65 that the chapter search has not been performed (step S65;
N) Next, it is determined whether or not a navigation command for shifting to another chapter in the currently reproduced title is detected from the DVD 1 as the navigation data ND (step S66). (Step S66; Y) The reservation execution mode is canceled in order to reproduce the music reflecting the intention of the creator who produced the recorded information in the DVD 1 (step S69), and the process proceeds to step S7, while the other chapters are reproduced. If the navigation command to shift to the reproduction is not detected (step S66; N), then a title search (a search process for each title, specifically, Refers to heading of a title (detecting the head of each title), for example, in recorded information such as a role playing game, (There is a case where title search is prohibited by the navigation data ND because there is an adverse effect such as being lost.) It is determined whether or not the title search is executed (step S67). Step S67: Y), it is determined that the scheduled reproduction is to be ended, and the process shifts to the next step S7 via step S69.

On the other hand, if it is determined in step S67 that the title search has not been executed (step S6).
7; N) Then, a navigation command for shifting to reproduction of a title other than the title including the chapter currently being reproduced is set as navigation data ND on the DVD.
1 is determined (step S6).
8) If detected (Step S68; Y) D
In order to reproduce the music reflecting the intention of the creator who produced the recording information in VD1, the reservation execution mode is released (step S69), and the process proceeds to step S7, while the process proceeds to the reproduction of another title. If the navigation command has not been detected (step S68; N), the process directly proceeds to step S7 in order to continue the scheduled reproduction.

In the process of step S69 shown in FIG. 11, after canceling the reservation execution mode, D
A reproduction process according to the navigation data ND reproduced from VD1 is executed.

Finally, the process of searching for a reserved music piece in step S7 will be described in detail with reference to FIG.

As shown in FIG. 12, in the search processing, first, it is determined whether or not the information reproducing apparatus S is in the reservation execution mode (step S70). (Step S70; N) It is determined that the reproduction is normal, and the process directly proceeds to Step S1. On the other hand, when it is in the reservation execution mode (Step S7).
0; Y) Next, it is determined whether or not the search is actually being performed (step S71). If the search is currently being performed (step S71; Y), it is determined that a new search cannot be started, and the process directly proceeds to step S1. On the other hand, when the current search is not being executed (step S71; N), the reproduction of the last cell 20 of the currently reproduced music (the reproduction started in step S54 or S4) is ended. It is determined whether or not (step S72).

When the reproduction of the last cell 20 has been completed (step S72; Y), it is determined that the reservation reproduction of one music has been completed and the next reserved music is searched (step S77), and step S1 is performed. Move to.

On the other hand, if it is determined in step S72 that the reproduction of the last cell 20 has not been completed (step S72; N), it is determined that one piece of music is currently being reproduced, and then a domain other than the title domain is determined. It is determined whether or not a navigation command for searching for the same (for example, a menu domain) is detected from the DVD 1 as the navigation data ND (step S73). If it is detected (step S73; Y), it is invalidated. The process proceeds to the search for the next reserved music (step S77). In this case, the reproduction of the currently reproduced music is interrupted.

Next, if it is determined in step S73 that a navigation command for searching another domain or the like has not been detected (step S73; N), it is determined whether a reservation has been made for each chapter. Is determined (step S7
4) If no reservation has been made (step S74;
N), proceed to step S1 as it is.

On the other hand, if it is determined in step S74 that a chapter is reserved (step S74;
Y) Next, the reservation is currently being executed (that is, the reproduction is scheduled to be performed in the order of inputting the reservation).
The PTT number of the reserved music (indicated as “PTTN” in FIG. 12, and when a plurality of chapters exist in one title 62, the number of the chapter in the title 62) and the currently actually played back line P of the song being played
The TT number is compared with the TT number (step S75). If the two are equal, it is determined that the scheduled playback of the currently reserved music piece is being executed, and the process directly proceeds to step S1.

On the other hand, if it is determined in step S75 that the PTT number of the music piece currently reserved is larger than the PTT number of the music piece currently being reproduced,
Assuming that the process of searching in the reverse direction has been performed during the reservation reproduction, the current reservation music is searched again and reproduction is started (step S76), and the process proceeds to step S1.

Further, in the judgment of step S75, when the PTT number of the music piece currently reserved is smaller than the PTT number of the music piece currently being reproduced,
It is determined that this is a change of the music during the programmed reproduction, and the music to be reproduced next is searched for and the reproduction is started (step S).
77) Go to step S1.

As described above, according to the reservation reproduction process of the first embodiment, the navigation data ND for switching to another menu screen during reproduction of the music indicated by the reproduction order set in the reservation is provided from the DVD1. When the music data is detected, the navigation data ND is invalidated, and the reproduction of the music is continued in the reproduction order set as a reservation. All settings can be executed.

Also, when a reservation is made in units of one title 62 at the time of setting the reservation, navigation data ND for switching to the menu screen during the reproduction of the title 62 indicated by the set reproduction order is displayed. Even if it is detected, the contents of the original reservation setting can be executed to the end.

Further, when a reservation is made in units of chapters obtained by further subdividing the title 62 at the time of setting the reservation, navigation to shift to the menu screen during reproduction of the chapters indicated by the reproduction order set in the reservation. Even if the data ND is detected, the contents of the original reservation setting can be executed to the end.

Further, when the reproduction of the music based on the set reproduction order is completed, the reproduction returns to the reproduction of the recorded information based on the original navigation data ND. The recorded information can be reproduced.

In the above-described embodiment, a case has been described in which the present invention is applied to the reproduction of music from the DVD 1 dedicated to karaoke. In addition to this, reserved reproduction is performed on a general music recording DVD. It can also be applied to cases. Also in this case, even if the navigation data ND for shifting to the menu screen different from the content of the reservation is detected, the content of the reservation can be executed to the end.

[0141]

As described above, according to the first aspect of the present invention, the difference reproduction including transition information indicating transition to the menu screen during reproduction of the information unit according to a preset reproduction order. When the control information is detected, the difference reproduction control information is invalidated, and the reproduction of the information unit is continued in the reproduction order set in the reservation. Therefore, even if the transition information is detected during the reproduction of the information unit, the original reservation setting is not performed. Can be executed.

Therefore, even if the reproduction control information includes transition information for transitioning to a menu screen separate from the contents of the reservation, each information unit can be reproduced in the reproduction order set in the reservation. Convenience at the time of reproducing information can be improved.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in the above, when the reservation is made in units of information blocks at the time of setting the reservation, it indicates that the screen shifts to the menu screen during reproduction of the information blocks indicated by the set reproduction order. Even if the transfer information is detected, the contents of the original reservation setting can be executed to the end.

According to the invention described in claim 3, according to claim 1
In addition to the effects of the invention described in the above paragraph, when a reservation is made in units of sub-information blocks at the time of setting the reservation, the display shifts to the menu screen during the reproduction of the sub-information blocks indicated by the set reproduction order. , The contents of the original reservation setting can be executed to the end.

According to the fourth aspect of the present invention, the first aspect is provided.
In addition to the effects of the invention described in any one of the above-described items 3, when the reproduction of the information unit based on the set reproduction order is completed, the reproduction returns to the reproduction of the recording information based on the original reproduction control information. After the end of the programmed reproduction, the recorded information can be reproduced based on the original reproduction control information.

[Brief description of the drawings]

FIG. 1 is a diagram showing a structure (format) of recording information in a DVD.

FIG. 2 is a diagram showing frame images constituting a GOP.

FIG. 3 is a diagram showing a logical structure (logical format) of recording information in a DVD.

FIG. 4 is a diagram showing an example of a hierarchical structure in a DVD.

FIG. 5 is a block diagram illustrating a schematic configuration of the information reproducing apparatus according to the embodiment.

FIG. 6 is a block diagram showing a data flow in the information reproducing apparatus of the embodiment.

FIG. 7 is a flowchart illustrating an entire reserved reproduction process according to the embodiment;

FIG. 8 is a flowchart illustrating a process of determining a hierarchical structure of recording information according to the embodiment.

FIG. 9 is a flowchart (I) showing a reservation execution process of the embodiment.

FIG. 10 is a flowchart (II) showing a reservation execution process according to the embodiment.

FIG. 11 is a flowchart illustrating a reservation release process according to the embodiment;

FIG. 12 is a flowchart illustrating a search process according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... DVD 2 ... Video manager 3, 63 ... VTS 10 ... VOB 11 ... Control data 20 ... Cell 30 ... VOB unit 41 ... Navi pack 42 ... Video data 43 ... Audio data 44 ... Sub picture data 50 ... PCI data 51 ... DSI Data 52 GOP 60 Program (chapter) 61 PGC 62 Title 70 Pickup 71 Signal processing unit 72 Video playback unit 73 Audio playback unit 74 System control unit 75 Operation unit 76 Display unit 77 Servo Circuit 78: Servo mechanism P: Pack S: Information reproducing device PT: Packet ND: Navigation data PD: Presentation data NM: Navigation manager PM: Presentation manager U: User R: Reservation routine Sp: Detection Signal Sv: Video signal Sa: Audio signal Scp: Command signal Scs, Sca, Scv: Control signal Spc: Reproduction control information signal Svout: Video output signal Saout: Audio output signal Sdp: Display signal Sr: Reserved signal Sin: Operation signal Sd … Drive signal

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[Procedure amendment]

[Submission date] October 16, 1998 (1998.10.
16)

[Procedure amendment 1]

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 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takahiko Ogikubo 4-2610 Hanazono, Tokorozawa City, Saitama Prefecture Pioneer Corporation Tokorozawa Plant F-term (Reference) 5D077 AA24 AA26 BA14 BB03 CA02 CB06 CB19 DC08 DC22 DC23 DF05 EA12 EA34 HC12 HC14 HC26 5D110 AA15 BC02 CA06 CA16 CD19 CD20 CF13 CJ14 CJ18

Claims (4)

[Claims] 1. An information reproducing method for reproducing recorded information from a recording medium on which recorded information and reproduction control information set in advance for controlling reproduction of the recorded information, wherein: A reservation step of presetting a reproduction order for each information unit set in advance; a detection step of detecting the reproduction control information from the recording information; and one information unit according to the preset reproduction order. During reproduction, the reproduction control information corresponding to the one information unit, the difference reproduction control information being the reproduction control information including transition information indicating transition to a menu screen for selecting the information unit. And a reproduction control step of invalidating the difference reproduction control information and continuing the reproduction of the information unit in the reserved set reproduction order when is detected. Information reproducing how. 2. The information reproducing method according to claim 1, wherein the recording information includes a plurality of information cells that are basic units in reproducing the recording information, and the reproduction control information includes: The cell includes a cell reproduction order information in which the reproduction order of the information cells is set in advance, and the information unit is an information block constituted by the information cells to be reproduced in an order defined by the cell reproduction order information. An information reproducing method, characterized in that there is an information reproducing method. 3. The information reproducing method according to claim 1, wherein the recording information includes a plurality of information cells that are basic units in reproducing the recording information, and the reproduction control information includes: The information unit includes cell reproduction order information in which a reproduction order of the information cells is set in advance, and the information unit further subdivides an information block including the information cells reproduced in an order defined by the cell reproduction order information. Sub-information block,
An information reproducing method, characterized by being a sub-information block composed of the information cells reproduced in an order defined by the cell reproduction order information. 4. The information reproduction method according to claim 1, wherein in the reproduction control step, when reproduction of the information unit based on the reproduction order set in the reservation is completed, An information reproducing method, wherein the method returns to reproduction of the recording information based on reproduction control information.