JP3519724B2 - Information recording medium, information recording device, information recording method, information reproducing device, and information reproducing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium such as a high density optical disc capable of recording information such as audio and video represented by a DVD at a high density, and information recording on the information recording medium. It belongs to the technical field of a recording device and a reproducing device for reproducing information from the information recording medium.

[0002]

2. Description of the Related Art Conventionally, a so-called CD (Compact Disc) is used as an optical disc on which information such as audio and video is recorded.
k), LDs (Laser Disks), etc. have become widespread.

In these LDs and the like, it is possible to record audio information of a plurality of channels, for example, not only monophonic audio of 1ch (channel) but also stereo audio of 2ch can be recorded and reproduced at the same time. Surround sound such as AC3 system can be recorded and played back simultaneously. When such multi-channel is used, a mode of combination arrangement of several kinds of speakers called an audio coding mode is set in advance, and a reproducing apparatus is used to determine in which mode the recorded audio information was recorded. It is necessary to record the surround mode information shown with respect to the LD and the like together with the audio information.

Taking the Dolby AC3 system as an example, FIG. 37 and FIG. 38 show this audio coding mode.
Will be explained.

In the Dolby AC3 system, as shown in the table of FIG. 37, eight audio coding modes (1+
1 to 3/2) are set, and 3-bit surround mode information is recorded in the LD or the like to indicate each mode. Therefore, the audio coding mode to be reproduced in the reproducing apparatus can be determined by referring to the surround mode information (000 to 111). As shown in the table of FIG. 37, in the Dolby AC3 system, the number of speakers (5) arranged in the room and their locations (left, right, center, left surround, and right surround) are limited. Eight kinds of audio coding modes are prepared under the limitation. Therefore, when making a recording sound source (source), a combination other than these eight kinds of modes cannot be selected.

A typical arrangement of the speakers limited in the Dolby AC3 system is, for example, the arrangement shown in FIG. In FIG. 38, inside the room 200, the listener position P0
With reference to, the left speaker SPl, the center speaker SPc, and the right speaker SPr are arranged as three speakers in the front, and the left surround speaker SPsl and the right surround speaker SPsr are arranged as two speakers in the rear.

As described above, according to the Dolby AC3 system, by preparing in advance a combination arrangement of eight types of speakers that are often used practically in the range of 5 ch, 3-bit surround mode information (000 to 111) Using, it is possible to create a three-dimensional acoustic space at the listener position P0 by using audio signals of multiple channels.

Further, in these CDs and the like, audio information and video information are recorded together with time information indicating the time at which each piece of information based on the reproduction start position of each CD or the like should be reproduced. For this reason, in addition to general normal reproduction in which recorded information is reproduced in the order in which it is recorded, for example, in a CD, only a desired piece of music is extracted and listened to from among a plurality of recorded pieces of music. Alternatively, it is possible to perform playback such as listening by changing the playback order at random.

[0009]

However, according to the above-mentioned Dolby AC3 system, it is impossible to specify a free combination of 5ch such as a combination of 1ch in the front and 1ch in the rear, or a combination of 5ch in the front. There is.

Further, in the above-mentioned CD and LD, the viewer has a choice with respect to the sound to be reproduced and the image to be displayed, and the viewer is rich in so-called interactive changes such as selecting and viewing them. There was a problem that it could not be regenerated. That is, for example, when watching a foreign movie recorded on an LD, a sound is selected (for example, either an English sound or a Japanese sound obtained by dubbing the sound is selected) to be output, It is not possible to select and display the language used for the subtitles displayed on the screen (for example, select either Japanese subtitles or original language subtitles).

On the other hand, at present, proposals and developments of a DVD, which is an optical disk in which the storage capacity is increased about 10 times without changing the size of the optical disk itself, are being actively made in comparison with the conventional CD. According to the knowledge of the inventors of the present application, in such a large capacity DVD, a plurality of audio signal streams can be recorded, and furthermore, an audio signal of 8 channels at maximum can be recorded for each audio signal stream. It is believed that However, if, for example, an 8-channel audio signal is recorded here, the number of possible surround modes described above will be enormous, and even if only the combination arrangement of the speakers that are often used in practice is considered, it is a considerable number. Will rise to. Therefore, it is considered that it is impossible to specify the combination arrangement of the practically used speakers depending on the 3-bit information as in the conventional Dolby AC3 system shown in the table of FIG. Moreover, if the number of speaker combination arrangements that can be simply specified is increased, the number of combinations that must be prepared will become huge, and the surround mode information that specifies which speaker each channel corresponds to will be reversed. It may be difficult to understand and complicated to handle. Furthermore, the multi-surround system such as the Dolby AC3 system which has been conventionally used for a CD or the like is used for multi-channel (up to 8 channels) multi-stream (up to 8 streams) D.
Under the present circumstances, those skilled in the art have not recognized the problem itself when applying it to voice information on VD.

[0012] Therefore, an object of the present invention is to make it possible to relatively easily specify a variety of multi-surround speaker combination arrangements in an information recording medium in which audio information of a plurality of streams is recorded in a plurality of channels. An object is to provide an information recording medium, an information recording device for recording information on the information recording medium, and an information reproducing device for reproducing information from the information recording medium.

[0013]

In order to solve the above-mentioned problems, the invention according to claim 1 is to provide a means for generating a multiplex signal containing audio information of a plurality of channels, and a surround provided for each channel. a control information, wherein each Ji
Mixed Mode Day showing the combination mode of channels
Data and, corresponding to each of shows and and each of said channels the arrangement of the speakers should voice information of each of the channels is output
Comprising a voice channel content data provided with means for generating an additional information including the surround control information composed of multiplexes and the multiplexed signal and the additional information, and recording means for recording on the information recording medium, the .

In order to solve the above-mentioned problems, a ninth aspect of the present invention is directed to a step of generating a multiplexed signal including audio information of a plurality of channels, and a surround control provided for each of the channels. Information, which is the combination of each said channel
Shows the mixed mode data indicating the combined mode and the arrangement of the speakers from which the audio information of each channel should be output.
Multiplexes and to and <br/> audio channel content data provided in correspondence to each of the said channels, and generating an additional information including the surround control information consisting of the multiplex signal and the side information And a recording step of recording on an information recording medium. In order to solve the above problems, the invention according to claim 17 provides audio information of a plurality of channels,
Surround control information provided for each channel, indicating the combination mode of each channel.
Tsu box mode data and, shown with and each of said Chang placement of the speakers to the audio information of each of the channels is output
An information reproducing apparatus for reproducing the audio channel content data provided in correspondence to each of the panel, the information from the information recording medium which surround the control information is recorded consisting of,
A reading means for reading the recorded information, a voice demodulating means for demodulating the voice information, and a control means for controlling the voice demodulating means are provided. In order to solve the above problems, claim 2
The invention described in 6 is audio information of a plurality of channels and surround control information provided for each of the channels, which is a mix mode indicating a combination mode of each of the channels.
A box mode data, the arrangement of the speakers should voice information of each of the channels are output shows and each said channel
A method for reproducing information from an information recording medium on which surround control information is recorded, which comprises audio channel content data provided in association with each of the audio channel content data , the reading step of reading the recorded information, It includes a demodulation step of demodulating information and a control step of controlling the demodulation step .

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, preferred embodiments of the present invention will be described. In addition, the embodiment described below describes an embodiment in which the present invention is applied to the DVD.

(I) Embodiment of Information Recording Medium First, the physical and logical configuration of a DVD which is one embodiment of the information recording medium to which the present invention is applied and its operation will be described with reference to FIGS. This will be described using 6.

First, a recording format (physical recording format) of video information and audio information on a DVD.
This will be described with reference to FIG.

As shown in FIG. 1, the DVD 1 of the embodiment
Has a lead-in area LI in its innermost peripheral portion and a lead-out area LO in its outermost peripheral portion, during which video information and audio information are respectively ID
It is divided and stored in a plurality of VTSs 3 (VTS # 1 to VTS # n) having (identification) numbers. Where V
TS (Video Title Set) is a related title (having the same attributes such as the number of streams of audio and sub-pictures, specifications, supported languages, etc.) (a work such as a movie that the producer intends to present to the viewer) Is a set (collection) in which a plurality of movies having dialogues in different languages are recorded as titles, or the same movie, for example, for the same movie. Even so, the movie version and the special version are stored as different titles. The video manager 2 is recorded at the beginning of the area where the VTS 3 is recorded. The information recorded as the video manager 2 is, 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 recorded on the DVD 1. Information related to the entire information and audio information is recorded.

Next, one VTS 3 starts with the control data 11 and has a plurality of VTSs each having an ID number.
It is divided and recorded in OB10. Here, a portion composed of a plurality of VOBs 10 is called a VOB set (VOBS). This VOB set includes control data 11 which is other data which constitutes VTS3,
In order to distinguish a plurality of VOBs 10 which are the entities of video information and audio information from each other, a VOB set is set for the relevant entity.

The control data 11 recorded at the head of the VTS 3 is PGCI (Program Chain) which is various information regarding a program chain which is a logical division of a plurality of cells (cells will be described later).
Information) is recorded. Also, each VO
In B10, substantive parts of video information and audio information (video or audio itself other than control information) are recorded in addition to the control information.

Further, one VOB 10 is composed of a plurality of cells 20 each having an ID number. Here, one VOB 10 is configured to be completed by a plurality of cells 20, and one cell 20 is second VOB 10.
It does not straddle.

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

One VOB unit 30 includes a navigation pack 41, a video pack 42 in which video data as a video information piece is recorded, an audio pack 43 in which audio data as an audio information piece is recorded, and a sub-pack. The sub picture pack 44 records sub picture data as a video information piece. here,
In the video pack 42, a packet containing video information is recorded together with additional information such as its header, and in the audio pack 43, a packet containing audio information is recorded together with additional information such as its header. Also, in the sub-picture pack 44, a packet including graphic data such as characters and figures as sub-picture information is recorded together with additional information such as a header thereof. As shown in FIG. 1, a video pack 42 having a large amount of data is recorded as one or a plurality of GOPs inside one VOB unit 30, and an audio pack 43 and a sub-picture pack 44 are arranged between the video packs 42. Has been done.

It is specified in the standard that the DVD 1 can record 8 kinds of audio and the recordable 32 kinds of sub-picture. Furthermore, the navigation pack 41 is always present in one VOBU 30, but the video pack 42, the audio pack 43, and the sub-picture pack 44 do not necessarily have to be present. Be free.

Finally, the navigation pack 41 uses the search information (specifically, the search information for searching the video or audio to be displayed).
DVD on which the video and audio to be displayed are recorded
DSI (Data Search Info) including the address above 1)
rmation) packet 51 and PCI (Pr) including information related to display control when displaying a video or generating a sound retrieved based on the information of the DSI packet 51.
esentation Control Information) packet 50, and the video data included in the video pack 42 is composed of one or more GOPs (Group Of Pictures). It should be noted that the PCI packet 50 includes, for a selection item selected by the viewer, highlight information that defines the display and operation when the item is selected. Depending on the highlight information, for example, changes in screen display for the selected item on the screen displaying the item to be selected by the viewer (so-called menu screen), the display position to be changed, and the command (selected The command to be executed corresponding to the item is set.

Here, the video information for constructing and displaying the frame, the selection button, etc. necessary for constructing and displaying the menu screen is a sub-picture pack as the sub-picture data which is the above-mentioned sub-picture information. Recorded at 44.

Further, the GOP is an MPEG2 (Moving Picture Exper) which is an image compression method adopted when recording video information on the DVD 1 in the present embodiment.
It is the smallest image unit that can be reproduced independently as defined in the tsGroup 2) system standard.

Here, the outline of the MPEG2 system will be described. Generally, in continuous frame images, the 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 based on a plurality of frame images transferred with several frames separated, another frame image existing between the plurality of frame images is interpolated based on a motion vector or the like of the original image. It is a method to generate in.
In this case, when recording another frame image,
By recording only the information about the difference and the motion vector from the plurality of frame images, it becomes possible to reproduce the other frame image by predicting from the plurality of frame images at the time of reproduction by referring to them. . As a result, the image can be compressed and recorded.

Thus, the MP adopted in this embodiment
In the EG2 system, a variable rate system in which the amount of data contained in each GOP 52 is not constant is adopted.

In the above-described hierarchical format recording format shown in FIG. 1, the manufacturer can freely set and record the respective sections according to his or her intention. By performing reproduction for each of these sections based on the later-described logical structure, various reproductions rich in change are possible.

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

To clarify the explanation, the lower hierarchy of FIG. 2 will be described. By selecting and combining a plurality of cells 20 in the physical structure described in FIG. The program 60 is logically constructed based on the producer's intention. The program 60 is also the minimum logical unit that can be accessed by a command by a system controller in the playback device, which will be described later. It should be noted that one or more programs 60 can be defined by the producer as the minimum unit that the viewer can freely select and view.
It is called TT (Part Of Title).

Further, one program 60 is used for a plurality of cells 2
Since 0 is selected and logically configured, one cell 20 is used in a plurality of programs 60, that is, one cell 20 is reproduced in a plurality of different programs 60, that is, so-called cell 20 reuse. It is also possible to do it.

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

Next, by combining a plurality of programs 60, one PGC (Program Chain) 61 is logically constructed based on the intention of the manufacturer. The above-mentioned PGCI (Program Chain Information) is defined in units of the PGC 61, and the reproduction order of the cells 20 of each program 60 when the respective programs 60 are reproduced is defined in this PGCI (the program 60 is defined by this reproduction order). A unique program number is assigned to each cell.), DV of each cell 20
Address which is the recording position on D1, one program 60
The number of the top cell 20 to be reproduced, the reproduction method of each program 60 [When recording information on the DVD 1 of the present embodiment, random reproduction (random reproduction by random numbers, the same program 60 It may be played a plurality of times.), Shuffle playback (random playback using random numbers similar to random playback, but the same program 60 is played only once, and the same program 60
Will not be played multiple times. ) Or loop reproduction (reproducing one PGC 61 many times), or a reproduction method by a combination of loop reproduction and random reproduction or shuffle reproduction is selected and reproduced by the manufacturer for each PGC 61. You can ]
And various commands (commands that can be specified by the manufacturer for each PGC 61 or cell 20) are included. In addition, PGC
As described above, the recording position of I on the DVD 1 is in the control data 11 or in the control data (not shown) in the video manager 2 in the case of PGCI relating to the menu in the video manager 2 (FIG. 1).
reference).

Further, one PGC 61 has the above-mentioned PGCI.
In addition, substantive video and audio data are included as a combination of the program 60 (in other words, as a combination of the cells 20).

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

Next, one title 62 is logically constructed by one or a plurality of PGCs 61. This title 62
Is a unit corresponding to, for example, one movie, and is complete information that the producer wants to provide to the viewer of the DVD 1.

Then, one or more titles 62 logically configure one VTS 63. This VTS6
The titles 62 included in 3 have common attributes, and for example, a movie in a different language for one same movie corresponds to each title 62.
Information corresponding to one VTS 63 shown in FIG. 2 corresponds to information included in one VTS 3 shown in FIG. That is, the logical VT shown in FIG.
All the information contained in S63 is recorded as one VTS3.

Based on the logical format described above, the producer designates the information divided in the physical structure on the DVD 1 to form a video (movie or the like) that the viewer should watch.

In the description of the physical structure shown in FIG. 1, a plurality of cells 20 have IDs to facilitate understanding of the contents.
Although it has been described that the data is recorded in the order of the numbers, in the DVD 1 of the embodiment, one cell 20 may actually be divided and recorded in a plurality of interleaved units IU shown in FIG.

That is, for example, as shown in FIG. 3, the manufacturer configures one PGC 61A with cells 20 having ID numbers 1, 2 and 4 and another PGC 61B with cells 20 having ID numbers 1, 3 and 4. In the case of reproducing information from the DVD 1 based on the PGC 61A, only the cells 20 having ID numbers 1, 2 and 4 are reproduced, and when the information is reproduced from the DVD 1 based on the PGC 61B. In this case, only the cell 20 having the ID numbers 1, 3 and 4 is reproduced. In this case, if the cells 20 are recorded separately for each ID number, for example, in the case of the PGC 61A, the cell 20DVD with the ID number 4 starts from the recording position on the DVD 1 of the cell 20 with the ID number 2.
It takes time to jump the pickup for reproduction to the recording position on the cell No. 1, and depending on the capacity of the track buffer in the reproducing apparatus described later, the cell 2 of the ID number 2
It becomes impossible to continuously reproduce the cell 20 of 0 and the ID number 4 (hereinafter referred to as seamless reproduction).

Therefore, in the case shown in FIG. 3, the ID number 2
Cell 20 of ID number 3 and cell 20 of ID number 3 have such a length that the continuity of the output signal is not lost even if the input of the input signal is temporarily stopped according to the speed of the input / output processing in the track buffer. The interleaved unit IU (that is, the length at which the output signal from the track buffer can be continuously output even if the input signal to the track buffer is interrupted due to the pickup jumping only during one interleaved unit IU). In the interleaved unit IU) of the PGC6.
When reproducing based on 1A, only the interleaved unit IU forming the cell 20 corresponding to the ID number 2 is continuously detected and reproduced. Similarly, when reproducing based on the PGC 61B, only the interleaved unit IU forming the cell 20 corresponding to the ID number 3 is continuously detected and reproduced.
The length of the interleaved unit IU is determined in consideration of the capacity of the track buffer, as described above, and also in consideration of the performance of the drive mechanism such as the slider motor for performing the track jump. May be done.

In this way, one cell 20 is divided into a plurality of interleaved units IU and recorded according to the intention of the manufacturer, so that when the PGC 61 including the cells 20 with random ID numbers is reproduced. However, the signal output from the track buffer is not interrupted, so that the viewer can watch the reproduced video without interruption.

The above interleaved unit IU
Are formed so as to be completed within one VOB 10, and one interleaved unit IU has a plurality of VOBs adjacent to each other.
It does not straddle 10. Regarding the relationship between the interleaved unit IU and the VOB unit 30, one or a plurality of VOs are included in one interleaved unit IU.
The B unit 30 is included, and one VOB unit 30 is configured to be completed in one interleaved unit IU, and one VOB unit 30 is divided to span a plurality of interleaved units IU. There is no such thing. Next, of the above physical structure and logical structure,
Particularly, the structure relating to the surround control according to the present invention will be described in detail with reference to FIGS. 4 to 11.

(I) First Surround Control Mode In this embodiment, the position of the speaker that can be designated in the room is limited to a predetermined type in advance.

Under this condition, the surround control information designating for each channel, from which speaker the signal recorded in that channel is output is shown in FIG.
The lead-in area LI, the video manager 2, the control data 11 of each VTS 3 or the control information of each audio packet shown in FIG. In addition, when speakers at the same position are specified for multiple channels, the convention is that speakers with the smallest channel number correspond to speakers arranged on the outer side (away from the listener position) in order. For the surround control information. Then, in the recording device and the reproducing device, if the surround control information is recorded and reproduced according to this convention, the size of the channel number can be effectively used as one information indicating the speaker arrangement. That is, there is no problem even if the speakers having the same arrangement are designated by a plurality of channels, and in this case, the speaker positions are designated according to the intention of the creator.

In the present embodiment, for example, it is assumed that there are 15 possible speaker layouts that can be designated. Therefore, 4-bit information is required for each channel as data for indicating any one of the 15 speaker positions.

The speaker at the position that can be designated in FIG. 4 is the left ground front speaker S placed on the floor in front of the listener position P0 inside the room 200.
Pgfl, a right ground front speaker SPgfr and a center ground front speaker SPgfc, and a left top front speaker SPtfl, a right top front speaker SPtfr and a center top front speaker SPtfc, which are arranged above the head in front, and arranged on the floor behind There are a left ground rear speaker SPgrl, a right ground rear speaker SPgrr, and a center ground rear speaker SPgrc,
Left top rear speaker SPtr placed overhead above
l, a right top rear speaker SPtrr, and a center top rear speaker SPtrc, and left side speaker SPsl and right side speaker SPsr are arranged on the left and right walls, respectively.
There is an overhead center speaker SPtm placed in the center of the ceiling
There is.

As the surround control information, for example, the surround control information shown in FIG. 5 is constructed. In this example, it is assumed that the audio signal stream for the surround recording is composed of 8-channel audio signals.

In FIG. 5, surround control information 300
Consists of 64-bit information, and predetermined data is described for each channel for each byte as follows.

First, in the 1-byte data portion of bits b63 to b56, data "0" is written as an empty area in bit b63, and in bit b62.
ACH0 mode data 301a indicating that a ch0 audio signal is downmixed into a multi-channel audio signal is described. Bit b61 and bit b60 include
ACH0 mix mode data 302a indicating that the 1-byte data is in the combination mode of audio ch0
Is described, and the audio channel content data 30 indicating the arrangement of the speakers from which the audio signal of the audio ch0 should be output is set in 4 bits of the bits b59 to b56 that follow.
3a is described.

In the 1-byte data portion of bits b55 to b48, data "0" is written as an empty area in bit b55, and ch1 is written in bit b54.
ACH1 mode data 301b indicating that the audio signal of 1 is downmixed into a multi-channel audio signal is described, and the bit b53 and the bit b52 indicate that the 1-byte data is applied to the combination mode of audio ch1. The ACH1 mixed mode data 302b shown is described, and the audio channel content data 303b indicating the arrangement of the speakers from which the audio signal of the audio ch1 is to be output, in the following 4 bits of bits b51 to b48.
Is described.

In the 1-byte data portion of bits b47 to b40, combination parameter data 304c indicating combination characteristics of multi-channel audio signals is described in bits b47 and b46.
In 45 and b44, the 1-byte data is the audio channel.
ACH2 mix mode data 302c indicating that the combination mode of 2 is applied is described, and in the 4 bits of the subsequent bits b43 to b40, a voice channel indicating the arrangement of the speakers from which the voice signal of this voice ch2 should be output. Content data 303c is described.

1-byte data portion consisting of bits b39 to b32, 1-byte data portion consisting of bits b31 to b24, 1-byte data portion consisting of bits b23 to b16, 1-byte data portion consisting of bits b15 to b8 Similarly to the 1-byte data portion of bits b47 to b40 described above, the 1-byte data portion including the portion and bits b7 to b0 is the combination parameter data ACHn (n = 3 to
7) Describes mix data and audio channel content data. This audio channel content data 303
The relationship between the 4 bits recorded as and the position of the output speaker is as shown in FIG.

For example, the audio channel content data 303 (303a, 303b, 303c, shown in the table of FIG. 5)
6), the binary data 0000 to 1100 are described in ch0 to ch5 as shown in FIG. 6, and among the speaker arrangements shown in FIG. 4 which are associated in advance with these binary data 0000 to 1100. Of the binary data 0000 to 1100, respectively.

In the example shown in the table of FIG. 6, the audio signal stream for the surround recording is composed of audio signals of six channels (two channels are not used), and Is assigned to ch
There are 6 channels from 0 to ch5. In this case c
In the surround control information 300 regarding h6 and ch7, it is described in the voice attribute information (not shown) that ch6 and ch7 are not used, so ch6 and c
The audio channel content data for h7 is invalid.

Audio channel content data 3 shown in FIG.
FIG. 7 shows the relationship between the speaker arrangement indicated by 03 and each channel.

In FIG. 7, inside the room 200, the left ground front speaker SPgfl # 1 and ch1 corresponding to ch0 are used as the five speakers arranged on the floor in front of the listener position P0. Right ground front speaker SPgfr # 1, center ground front speaker SPgfc corresponding to ch2, left ground front speaker SPgfl # 2 corresponding to ch3, and ch4
Right grand front speaker SPgfr # 2,
In addition, as one speaker placed on the rear overhead, the central top rear speaker SPtrc corresponding to ch5
Are arranged.

As can be seen especially from the table of FIG. 6, there is no distinction between the left and right ground front speakers # 1 and # 2 in the data of the audio channel content information, but a plurality of such When the same speaker is designated by the channel, the surround control information is described according to the rule that the one with the smaller channel number is placed outside, so that the above # 1 and #
2 and 2 can be clearly distinguished by treating "the size of the channel number" as one piece of information.

Further, for example, the audio channel content data 303 (303a, 303b, 303c, shown in FIG. 5)
8), binary data 0000 to 1111 are described in ch0 to ch6, respectively, as shown in FIG. 8, and among the speaker arrangements shown in FIG. 4 that are associated in advance with these binary data 0000 to 1111. Any of these is indicated by the value of the binary data 0000-1111.

Audio channel content data 3 shown in FIG.
FIG. 9 shows the relationship between the speaker arrangement indicated by 03 and each channel. In FIG. 9, inside the room 200,
Placed on the floor in front of the listener position P0 7
As one speaker, a left ground front speaker SPgfl # 1 corresponding to ch0, a right ground front speaker SPgfr # 1 corresponding to ch1, a left ground front speaker SPgfl # 2 corresponding to ch2, a right ground front speaker SPgfr # corresponding to ch3 2, ch4
Corresponding to the left ground front speaker SPgfl # 3,
Right grand front speaker SPgfr corresponding to ch5
Central ground front speakers SPgfc corresponding to # 3 and ch6 are arranged.

As can be seen especially from the table of FIG. 8, there is no distinction between the left and right ground front speakers # 1 and # 2 and # 3 in the data of the audio channel content information. According to the convention that the channel with the smallest channel number is placed outside, #
1 and # 2 and # 3 can be clearly distinguished on the data.

As described above, according to the first surround control mode, the position of the speaker that can be designated in the room is limited to a predetermined type (for example, 15 types shown in FIG. 4). By the information of 4 bits per channel (that is, the audio channel content data in the surround control information), that is, by the information of 32 bits per one audio signal stream, the speaker of which the audio signal of each channel should be output is exhausted. You can specify the position. Moreover, when a plurality of channels specify the speaker at the same position, the rule that corresponding to the speakers arranged in order from the one with the smallest channel number is provided for this 4-bit information, Also in this case, the arrangement of the speakers can be specified with certainty.

In the present embodiment, in addition to the 15 types of positions shown in FIG. 4, the placement of speakers for the super woofer (super bass) (amplifier position of the reproducing device or arbitrary placement without position designation) is 16 It may be the position of the item type. Furthermore, when a plurality of channels specify speakers at the same position, the channels with the highest channel number correspond to the speakers arranged outward (the side farther from the listener position) in order. You may set the convention that the size is reversed. Even if it is reversed in this way, the same effect can be obtained as long as both the recording device and the reproducing device record and reproduce data in accordance with this convention.

As described in detail above, this embodiment is advantageous when the number of channels is large and it is desired to freely specify the speaker arrangement. For example, 15 shown in FIG.
In the case of the type of speaker arrangement, a maximum of "15 (the number of arrangements) to the power of 8 (the number of channels)" can be specified as the combination arrangement of speakers.

(Ii) Second Surround Control Mode In the present embodiment, a combination arrangement mode of speakers which is often used in practice is set in advance as the audio coding mode. Surround mode information indicating the audio coding mode is described in the lead-in area LI, the video manager 2 or the control data 11 of each VTS shown in FIG.

For example, as shown in the table of FIG. 10, this surround mode information 400 is composed of 4 bits and indicates 16 audio coding modes (1 + 1 to 4/4) by binary values 0000 to 1111. Then, unlike the case of the conventional Dolby AC3 system described above, 16 kinds of modes in which the number of speakers arranged in the room and the place thereof are not limited can be indicated by 4-bit information. Therefore, when making a recording sound source, the desired mode can be selected from a combination of these 16 types of modes.

Mode 4 of the audio coding modes indicated by the surround mode information shown in the table of FIG.
FIG. 11 shows the arrangement of the speakers corresponding to / 4. Figure 1
1, the left ground front speaker SPgfl, the right ground front speaker SPgfr, the left top front speaker SPtfl, the right top front speaker SPtfr,
A left ground rear speaker SPgrl, a right ground rear speaker SPgrr, a left top rear speaker SPtrl, and a right top rear speaker SPtrr are arranged in the room 200.

In addition, the above-described speaker combination arrangement shown in FIG. 7 and the speaker combination arrangement shown in FIG. 9 are used as one of the speaker combination arrangements which are often used in practice, as audio coding modes 5/1 and 7 /.
Set as 0, and in surround mode information (for example,
1001 and 1010).

As described above, according to the present embodiment, the speaker combination arrangement that is often used practically (for example, 1
By preparing 6 types in advance, a relatively small number of surround control information (eg, 0000 to 111) of a predetermined number of bits (eg, 4 bits in total for 8 channels).
By using 1), it is possible to create a three-dimensional acoustic space at the listener's position by using audio signals of multiple channels.

In particular, the audio coding mode (mode of speaker combination arrangement) that can be designated by the surround mode information described above is arbitrary as long as the number of channels is 8 or less. Then, as long as the reproducing apparatus can determine the audio coding mode by reproducing the sound mode information, there is no problem in any mode. However,
It is useless to set the audio coding mode for a speaker combination arrangement that the viewer may not actually use.

As described above, in this embodiment, if there are 16 types of audio coding modes, all channels of one audio signal stream can be represented by 4-bit information, and, for example, in the case of 32 types. Also, it can be represented by 5-bit information, that is, by writing extremely little information to the DVD, multi-surround can be realized. Especially when the number of channels is small,
In this way, the combination arrangement of the speakers that is often used in practice is set and designated by the surround mode information, which is advantageous because the amount of information to be written on the DVD can be small.

In addition, when the surround control information and the surround mode information are included in the control data of each VTS, the audio coding mode can be changed for each VTS, which is convenient. However, when the surround control information and the surround mode information are put in the lead-in area or the video manager, it is not necessary to refer to the audio coding mode for each VTS, and there is an advantage that the process becomes simple.

The surround control information and the surround mode information described above are not alternative information, but both the recording device and the reproducing device are configured so that both information can be recorded and both information can be reproduced. If this is done, the DVD manufacturer will be able to perform surround control using either information as appropriate, thus increasing flexibility. Furthermore,
Viewers can easily enjoy multi-audio and multi-surround.

Note that the DVD can record, for example, a single movie, as well as voices and subtitles in a plurality of languages for voices and subtitles corresponding to the movie on the same optical disc. Since it has a large storage capacity, it is effective to apply the above recording format to the DVD 1 in particular.

(II) Embodiment of Recording Device Next, the above-mentioned control information, video information and audio information are recorded on a DVD.
An embodiment of a recording apparatus for recording on No. 1 will be described with reference to FIG.

First, the configuration and operation of the recording apparatus according to the embodiment will be described with reference to FIG.

As shown in FIG. 12, the recording apparatus S1 according to the embodiment is a VTR (Video Tape Recorder) 70.
A memory 71, a signal processing unit 72, a hard disk (HD) device 73, and a hard disk (HD) device 74.
, Controller 75, multiplexer 76, modulator 77
And a mastering device 78.

Next, the operation will be described.

Recording information R, which is a material such as music information and video information to be recorded on the DVD 1, is temporarily recorded on the VTR 70. Then, the record information R temporarily recorded in the VTR 70 is output to the signal processing unit 72 in response to a request from the signal processing unit 72.

The signal processing section 72 A / D-converts the recording information R output from the VTR 1 and then compresses it according to the MPEG2 system, time-multiplexes the music information and the video information and outputs them as a compressed multiplexed signal Sr. To do. After that, the output compressed multiplexed signal Sr is temporarily stored in the hard disk device 73.

In parallel with these, the memory 71 divides the recording information R into the partial recording information Pr in advance, and the surround control information 300 and the surround mode information 400 shown in FIG. The content information relating to the partial recording information Pr inputted in advance based on the cue sheet ST in which the user-defined information and the like are written is temporarily stored, and is output as the content information signal Si based on a request from the signal processing unit 72. .

Then, the signal processing section 72 outputs the time code T corresponding to the recording information R output from the VTR 70.
t and the content information signal Si output from the memory 71, referring to the time code Tt, the DSI information signal Sdsi and PCI information signal Spci corresponding to the partial record information Pr.
To generate and output the DSI information signal Sdsi and PC
The I information signal Spci is temporarily stored in the hard disk device 74.

The above processing is executed for the entire record information R.

When the above processing is completed for all the recorded information R, the controller 75 causes the hard disk device 7 to operate.
3 reads the compression multiplexed signal Sr from the hard disk device 74, reads the DSI information signal Sdsi and the PCI information signal Spci from the hard disk device 74, generates additional information DA based on these, and stores the additional information DA in the hard disk device 74. this is,
This is because some control signals have their contents determined by the generation result of the compressed multiplexed signal Sr. On the other hand, the controller 75 manages the time of each operation of the signal processing unit 72, the hard disk device 73, and the hard disk device 74, and adds the additional information signal Sa corresponding to the additional information DA.
Is read from the hard disk device 74 and output, and an information selection signal Scc for time-multiplexing the compression multiplexed signal Sr and the additional information signal Sa is generated and output.

Thereafter, the compression multiplexed signal Sr and the additional information signal Sa are time-axis multiplexed by the multiplexer 76 based on the information selection signal Scc and output as the information additional compression multiplexed signal Sap. If the sub-picture information exists, it is input to the signal processing unit 72 by another means such as a hard disk device (not shown) and processed in the same manner as the image and audio information.

Then, the modulator 77 adds an error correction code (ECC) such as Reed-Solomon code to the outputted information-added compression multiplexed signal Sap and performs modulation such as 8-16 modulation to make the disc recording signal Sm. Is generated and output to the mastering device 78.

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

As described above, in the present embodiment, the signal processing section 72, the hard disk device 73, the hard disk device 74, the controller 75, the multiplexer 76, the modulator 77 and the mastering device 78 constitute an example of a writing means. Thus, the input unit of the cue sheet ST and the memory 71 constitute an example of an input unit.

Next, the detailed operation of the recording apparatus S1 for recording the surround control information and the surround mode information on the master disk will be described.

When the control information signal Si indicating the surround control information and the surround mode information input from the cue sheet ST is input, the information processing section 72 receives the lead-in located on the inner peripheral side of the disc shown in FIG. It is output to the hard disk device 74 as an information signal Scs for entering the area LI or the video manager 2 or as an information signal Ssc for entering the control data 11 located at the head of each VTS 3. Hard disk device 74
Uses the control information Ssc as another DSI information signal Sdsi.
And the PCI information signal Spci.

Here, the controller 75 controls the DVD
When the information selection signal Scc indicating that the surround control information 300 or the surround mode information 400 to be placed in the lead-in area or the video manager area located on the inner peripheral side of is output, the multiplexer 76 causes the additional information signal S
Switched to side a. And surround control information 3
00 or surround mode information 400 is input to the modulator 77 as a part of the additional information signal Sa multiplexed at this time, and further to the mastering device 78 as a part of the disc recording signal Sm. As a result, the surround control information 300 shown in FIG. 5 or the surround mode information 400 shown in FIG. 10 is constructed in the lead-in area or the area of the video manager.

Alternatively, the controller 75 controls each V
When the information selection signal Scc indicating that the surround control information 300 or the surround mode information 400 to be placed at a predetermined position in the control data of the TS should be selected, the surround control information 300 or the surround mode information 400 is output.
Is inputted to the modulator 77 as a part of the additional information signal Sa multiplexed at this time, and further inputted to the mastering device 78 as a part of the disc recording signal Sm. This operation is performed for each of the plurality of VTSs, and the surround control information 300 shown in FIG. 5 or the surround mode information 400 shown in FIG. 10 is constructed in the control data of each VTS.

When the surround control information 300 is recorded at the same time as the record information R, the signal processing section 72 sets V
After the recording information R output from the TR 70 is A / D converted, it is subjected to processing such as compression, and when audio information and video information are time-axis multiplexed and output as a compressed multiplexed signal Sr, the memory 7
Based on the content information signal Si output from 1, the surround control information 300 is multiplexed on the portion of the audio pack (packet) 43 where the control information is recorded.

As described in detail above, according to the recording apparatus S1 of the present embodiment, the above-mentioned “(I) information recording medium
The master disk of DVD1 described in the embodiment can be created.

(III) Embodiment of Reproducing Device Next, an embodiment of a reproducing device for reproducing the information recorded on the DVD 1 by the recording device S1 will be described with reference to FIG.
Will be explained.

First, the configuration and operation of the reproducing apparatus according to the embodiment will be described with reference to FIG.

As shown in FIG. 13, the reproducing apparatus S2 according to the embodiment has a pickup 80 and a demodulation / correction unit 81.
, Stream switches 82 and 84, track buffer 83, system buffer 85, demultiplexer 86, VBV (Video Buffer Verifier) buffer 87, video decoder 88, sub-picture buffer 89, and sub-picture decoder 90. , Mixer 91
, Audio buffer 92, and audio decoder 9
3, a PCI buffer 94, a PCI decoder 95,
Highlight buffer 96 and highlight decoder 97
The input unit 98, the display 99, the system controller 100, the drive controller 101, the spindle motor 102, and the slider motor 103. Note that the configuration shown in FIG. 13 shows only the part relating to the playback of video and audio in the configuration of the playback device S2, and is a servo for servo-controlling the pickup 80, the spindle motor 102, the slider motor 103, and the like. The circuit and the like are the same as those of the conventional technique, and thus the description and detailed description thereof are omitted.

Next, the overall operation will be described.

The pickup 80 includes a laser diode, a deflection beam splitter, an objective lens, a photodetector, etc. (not shown), irradiates the DVD 1 with the light beam B as reproduction light, and emits the light beam B from the DVD 1. It receives the reflected light and outputs a detection signal Sp corresponding to the information pit formed on the DVD 1. At this time, the light beam B is accurately applied to the information track on the DVD 1, and a method similar to that of the conventional technique is applied to an objective lens (not shown) so that the information recording surface on the DVD 1 is accurately focused. The tracking servo control and the focus servo control are performed by.

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

The stream switch 82 to which the demodulated signal Sdm is input is controlled to be opened / closed by the switch signal Ssw1 from the drive controller 101, and when closed, the input demodulated signal Sdm is directly passed through and output to the track buffer 83. To do. On the other hand, when the stream switch 82 is open, the demodulated signal Sdm is not output, and unnecessary information (signal) is not input to the track buffer 83.

The track buffer 83 to which the demodulated signal Sdm is input is constituted by a FIFO (First In First Out) memory or the like, and temporarily stores the input demodulated signal Sdm, and the stream switch 84 is closed. If so, the stored demodulated signal Sdm is continuously output. The track buffer 83 compensates for the difference in data amount between GOPs in the MPEG2 system, and discontinues due to the track jump in the seamless reproduction when reading data divided into interleaved units IU. It is for continuously outputting the demodulated signal Sdm input to the terminal to cancel the interruption of the reproduction due to the discontinuity.

The stream switch 84 to which the demodulated signal Sdm is continuously input is prevented from causing overflow of various buffers in the subsequent stage or conversely emptying of the decoding process in the demultiplexing process of the demultiplexer 86. In addition, opening / closing is controlled by the switch signal Ssw2 from the system controller 100.

On the other hand, the system buffer 85 to which the demodulated signal Sdm is input in parallel with the track buffer 83 is DV
First detected when loading D1, DVD
The management information (video manager 2, etc.) related to the entire information recorded in 1 and the control data 11 of the VTS 3 are accumulated and output to the system controller 100 as the control information SC, and the above-mentioned navigation is performed as necessary during information reproduction. The DSI packet 51 for each pack 41 is temporarily stored and output to the system controller 100 as control information SC.

In the demultiplexer 86 to which the demodulation signal Sdm is continuously input via the stream switch 84, the video information, the audio information, the sub-picture information and the PCI packet 50 for each navigation pack 41 are separated from the demodulation signal Sdm. Then, the video signal Sv, the sub-picture signal Ssp, the audio signal Sad, and the PCI signal Spc are output to the VBV buffer 87, the sub-picture buffer 89, the audio buffer 92, and the PCI buffer 94, respectively. Note that the demodulated signal Sdm may include a plurality of languages as separate streams as audio information or sub-picture information. In that case, the stream selection signal Slc from the system controller 100 causes a desired language. Are selected and output to the audio buffer 92 or the sub-picture buffer 89.

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

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

If the sub-picture signal Ssp contains picture information for composing a frame, a selection button, etc. necessary for composing and displaying the menu screen, the high-level signal from the system controller 100 is sent. Based on the write control signal Sch, the display state of the selection button or the like to be displayed is changed and output.

The demodulated video signal Svd output from the video decoder 88 and the demodulated sub-picture signal Sspd (synchronized with the corresponding demodulated video signal Svd) output from the sub-picture decoder 90 are mixed by the mixer 91. The final video signal Svp to be displayed is output to a display unit such as a CRT (Cathode Ray Tube) not shown.

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

Further, a PCI to which the PCI signal Spc is input
The buffer 94 is composed of a FIFO memory or the like, temporarily stores the input PCI signal Spc, and outputs it to the PCI decoder 95. The PCI buffer 94 synchronizes the PCI packet 50 included in the PCI signal Spc with the video information, audio information, sub-picture information or the like corresponding to the PCI packet 50, and PCI to the video information, audio information, sub-picture information, or the like. This is for applying the packet 50. Then, the PCI signal S synchronized by the PCI buffer 94 with the corresponding video information, audio information, sub-video information, or the like.
In the pc, the highlight information included in the PCI packet 50 is separated by the PCI decoder 95, and the highlight signal S
It is output to the highlight buffer 96 as hi,
The portion other than the highlight information of the PCI packet 50 is the PC
The I information signal Spci is output to the system controller 100.

The highlight buffer 96 to which the highlight signal Shi is input is composed of a FIFO memory or the like,
The input highlight signal Shi is temporarily stored and output to the highlight decoder 97. Highlight buffer 9
Reference numeral 6 is a time axis compensation for accurately displaying the change in the display state of the selection item corresponding to the highlight information, corresponding to the sub video signal Ssp including the video information for the highlight information. Is a buffer for performing. Then, the highlight signal Shi for which the time axis compensation has been performed is decoded by the highlight decoder 97, and the information included in the highlight signal Shi is output to the system controller 100 as a demodulated highlight signal Shid. here,
Based on the demodulated highlight signal Shid, the system controller 100 outputs the highlight control signal Sch in order to change the display state according to the highlight information.

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

Further, when the system controller 100 detects from the control signal Sc or the above-mentioned DSI data that it is necessary to perform a track jump process such as a search for seamless reproduction, it informs the drive controller 101. , And outputs a seamless control signal Scsl corresponding to the track jump processing. Then, the drive controller 101 to which the seamless control signal Scsl is input outputs a drive signal Sd to the spindle motor 102 or the slider motor 103. By this drive signal Sd, the spindle motor 102 or the slider motor 103 causes the DVD that the light beam B should reproduce.
The pickup 2 is moved so as to irradiate the recording position on 1 (see the broken line arrow in FIG. 13), and the rotation speed of the DVD 1 is controlled by CLV (constant linear velocity). In parallel with this, when the pickup 2 is moving and the demodulation correction unit 81 does not output the demodulation signal Sdm, the drive controller 101 outputs the switch signal Ssw1 based on the seamless control signal Scsl and opens the stream switch 82. At the same time, when the demodulated signal Sdm starts to be output, the stream switch 82 is closed to output the demodulated signal Sdm to the track buffer 83.

As described above, in the present embodiment, the pickup 80 constitutes an example of the reading means, and the track buffer 83, the demultiplexer 86, the audio buffer 92 and the audio decoder 93 constitute an example of the audio demodulating means. Has been done.

Next, the structure and operation of the surround control of this embodiment will be described in detail.

Here, the form of two reproducing devices in the case where the surround control information 300 shown in FIG. 5 is reproduced as a part of the control information of the lead-in area, the video manager, the control data of each VTS or each audio packet. Will be described below.

(I) Mode of First Reproducing Device In the present embodiment, in particular, the speaker position at which each of a plurality of audio signals should be output is referred to the surround control information 300 which is reproduced prior to the reproduction of the audio signals. By doing so, it is identified by the controller 100. Under the control of the controller 100, information on which speaker in the room each channel should be output, which is identified in this way, is displayed on the display 99 or the image provided on the front panel of the playback device. The information is displayed on the screen of the television connected to the reproducing apparatus S2 to reproduce and output the information. This display method uses a screen 99 of a display 99 composed of a liquid crystal display device as shown in FIG.
The text may be displayed on the screen a, or the screen 11 of the television connected to the reproducing apparatus S2 as shown in FIG.
It may be a graphic display on 0.

Therefore, the viewer can move his or her speaker to the displayed position by seeing this display.
That is, the viewer prepares the required number of speakers according to the displayed speaker arrangement and arranges them at the designated positions, respectively, and outputs the audio signal of each channel to the designated speaker. By wiring as described above, the surround sound field intended by the title creator can be reproduced extremely accurately. Therefore, the reproducing apparatus S2 is advantageous as a reproducing apparatus for business use or sound mania.

(Ii) Second Playback Device Mode In the above-described first playback device mode, the speaker is placed every time the speaker placement is displayed on the display or TV screen, that is, every time the DVD to be played is changed. They have to be rewired and rewired, which is inconvenient for normal home use. On the contrary, it would be convenient if an appropriate surround sound field can be reproduced from a plurality of DVDs having different speaker arrangements indicated by the above-mentioned surround control information without changing the speaker setting performed once.

Therefore, in the second embodiment, the reproducing apparatus S2 is
First, of the 15 types of speaker arrangements shown in FIG. 4 and one type of speaker arrangement for super woofers (16 kinds of arrangements in total), the controller 100 determines which speaker is actually arranged in the room. It is configured so that it can be designated. This designation is performed via the input device 98.

More specifically, for example, this designation means "is there a left grand front speaker? Yes / No?" (In this) on the display screen of the television or display connected to the reproducing device S2 by the characters. On the contrary, Y
Respond to es by operating the cursor or entering a key), "Is there a right ground front speaker? Yes / No
? (In response to this, in response to Yes by a cursor operation or a key input), ... In the question and answer format, the presence or absence of each speaker may be designated first. Further, for example, when a graphic display as shown in FIG. 4 is made on the display and a speaker is actually present at each speaker position by a mouse operation or the like, “○” (and / or “×” when not present) is displayed. The presence or absence of each speaker may be input and designated by attaching.

Further, for example, on the display screen of the television or the display, the character "What is the distance to the speaker in the x direction? M" is displayed (in contrast, "1.5" is entered on the numeric keypad or up / down key). Answer)), "What is the distance to the speaker in the y direction? M" (in response to this, enter "2" on the numeric keypad or the up / down keys), ... The position with respect to the position may be designated. Further, for example, by inputting the (x, y, z) coordinates of each speaker with the listener position as the origin, the position of each speaker with respect to the listener position may be input and designated. Furthermore, for example, on the menu screen, the room type can be 4.5 tatami mats, 6 tatami mats, 8 tatami mats, 10 tatami mats, 12 tatami mats, ..., or a variety of rooms such as rectangular rooms, square rooms, large rooms, and small rooms. By selecting one of the types, the position of each speaker with respect to the listener position may be indirectly specified. That is, in this case, assuming that the listener position is the center of the room and the speakers are arranged at the corners of the room, the controller 100 calculates the distance to each speaker and calculates (x, y, z) of each speaker. ) Coordinates are calculated automatically. Furthermore, a layout pattern that is often used in practice (for example, 4 speakers at 4 corners of a 6-tatami mat or 8 tatami-mat)
It is also possible to prepare dozens of different types of patterns), display each arrangement pattern in sequence, and select the corresponding arrangement pattern from among them.

Further, the real speaker layout information indicating the designated layout is in a predetermined format and is stored in the controller 10
The present speaker arrangement information is stored in a non-volatile storage device built in 0, and once this designation is made, even if the power of the reproducing device S2 is turned off, the existing speaker arrangement information is not lost. Then, this real speaker arrangement information can be updated at any time according to the viewer's desire.

In the second mode, the reproducing apparatus S2 further reproduces the audio signals of the respective channels by reproducing the audio signals of the respective channels based on the above-mentioned existing speaker arrangement information and surround control information 300. Also, in order to reproduce the surround sound field intended by the title creator, it is configured to convert into an audio signal corresponding to the actual speaker arrangement. That is, the playback device S
2 is the actual speaker placement specified by the viewer and D
The audio signal of each channel is configured to be mixed down to an output signal corresponding to the actual speaker arrangement according to the difference from the speaker arrangement indicated by the surround control information 300 reproduced from the VD.

Next, the configuration and operation for converting the audio signal corresponding to the speaker position designated by the reproduced surround control information 300 into the audio signal corresponding to the actual speaker arrangement will be described with reference to FIGS. 16 and 17. It will be described with reference to FIG.

Here, consider a case where the speaker arrangement designated by the surround control information shown on the left side of FIG. 16 is converted to the actual speaker arrangement shown by the pre-input designated real speaker arrangement information shown on the right side.

In this case, as shown in FIG. 17, the demodulated audio signal Sadd output from the audio decoder 93 of FIG. 13 is output to the output terminals of ch0 to ch5, but the reproducing device S2 outputs these signals. For example, eight downmix circuits 120a, 120b, 120 to be input
c, 120d, ... Downmix circuit 1
20a downmixes the audio signals of ch0 to ch7 and outputs them as a ch0 signal for an existing left ground front speaker. The downmix circuit 120b is c
The audio signals of h0 to ch7 are downmixed and output as a ch1 signal for a real right ground front speaker. The downmix circuit 120c is ch0 to ch7.
The audio signal of 3 is downmixed and output as a signal of ch3 for a real left top rear speaker. The downmix circuit 120d downmixes the audio signals of ch0 to ch7 and outputs them as ch4 signals for the existing right top rear speaker. In this example, since there are only four real speakers, they are not used here and are not shown in the figure, but in reality, eight downmix circuits are reproduced so as to cover the output of eight channels. Device S2
Is equipped with.

In FIG. 17, the downmix circuit 12
An amplifier provided for each input channel inside 0 has a coefficient Cn (n = n) of a value determined according to the conversion method as described later.
It is a variable gain amplifier having a function of multiplying each of 0 to 7) and changing its gain. Furthermore, each amplifier is a DSP
You may perform signal processing by (Digital Signal Processor) etc. Note that the contents of the signal processing in this case include phase control, delay time (Td) control, reverberation sound addition processing, and the like.

As described above, in this embodiment, the downmix circuit 120 constitutes an example of the output means.
The display 99 constitutes an example of a display unit, and the input unit 98 constitutes an example of a designation unit.

Next, a concrete example of the signal conversion method by the downmix circuit will be described with reference to FIGS.

First, a method of converting the position of the speaker designated by the surround control information to the position of the actual speaker will be described.

In this case, first, the virtual position of each speaker estimated by the surround control information is determined as follows. Here, the “virtual position” refers to the position of the speaker that is virtually virtualized during the algorithm for finally determining the distribution of the audio signals.

That is, a virtual position of another speaker is assumed from the position of the existing speaker indicated by the speaker specifying information input and specified by the viewer. As a general rule, the left and right ground front speakers SPgfl and SPgfr are basic speakers, so at least the positions of these two speakers are always input (designated) by the viewer. Therefore, even if the position of each speaker is not specified,
Since only the positions of these two speakers SPgfl and SPgfl should be designated for input, the virtual positions of the other speakers are considered as shown in FIG. That is, each speaker is virtually arranged at 15 types of positions that are symmetrical in the front-rear direction and the left-right direction with respect to the listener position P0 in the room 200.

At this time, if there is no instruction in the Z direction, it is considered that all the speakers are on the same plane, and the top speaker and the ground speaker are not distinguished. Here, it is assumed to be the ground.

Secondly, the conversion from the virtual position of each speaker obtained as described above to the position of the actual speaker (that is, the distribution of the audio signal to each speaker) is performed as follows.

That is, first, the distance from the speaker position designated by the surround control information to each of a plurality of existing speakers is obtained for each channel, and the positions of the closest existing speakers are obtained as described above. The output speaker is changed based on the virtual position of the speaker. That is,
The audio signal to be output from the speaker at each virtual position is distributed to a plurality of existing speakers. However,
At this time, it is treated as left-right symmetry, and further, as shown in FIG. 19, the speaker specified in the surround control information located in the corner of the room 200 is treated as Y0 = Z0. That is, as shown in FIG. 20, regardless of the distance between Y0 and Z0, when two speakers having such a positional relationship actually exist, the audio signal is distributed so as to be output from the two speakers. As shown in FIG. 21, the side wall of the room is treated as L1 = L2, and two speakers (SPgfl, SPgfr) having such a positional relationship actually exist regardless of the distance between L1 and L2. In this case, the audio signal is distributed so as to be output from these two speakers.

Then, the speakers in the room are grouped by plane as shown in FIG.

Here, it is assumed that the speaker at the virtual position on the front surface 201 has to be changed to the speaker existing on the front surface 201. That is, the audio signal to be output from the speaker at the virtual position on the front surface 201 is converted into the front surface 2
No. 01 is distributed to the existing speakers. Front side 2
Conversion from 01 to other planes is not allowed. That is, the front surface 201 has the first priority.

Next, the speaker at the virtual position on the rear surface 202 has a rear surface 2 irrespective of the distance relationship when there is an actual speaker on the rear surface 202.
Shall be converted to 02 loudspeakers.
That is, the rear surface 202 has the second priority.

Next, the top surface 203 and the ground surface 20.
4, the left side surface 205 and the right side surface 206 are treated similarly. However, when the speaker in the virtual position exists on two surfaces (in the case of the center position), the rear surface 202 is prioritized. The conversion from the rear surface 202 to another surface is postponed.

Next, as described above, since it is assumed that the two basic speakers SPgfl and SPgfr are always present, if there is no speaker that actually exists in the group of each surface, the front surface 201, and Finally, the two speakers SPgfl and SPgfr are used for output.

FIG. 23 to FIG. 26 show the conversion from the virtual position of each speaker to the position of the actual speaker (that is, the distribution of the audio signal to each speaker), which is performed according to the above rules.

As shown in FIGS. 23 to 26, the speaker position estimated by the surround control information is converted to the actual speaker position. In the drawings, circled numbers, ... Show the priority order of conversion in the processing of each NO. When the conversion is performed in order from, and there is a speaker that exists at the conversion destination,
No further conversion is performed. Thus, according to the above rule, the virtual speakers SPtfc, SPtfl, (SPgf
l,) SPgfc, SPtm, SPsl, SPtrc, SPtrl, S
Conversion from Pgrl and SPgrc to the actual speaker position is performed. In principle, the speaker SPgfl must actually exist.

Thirdly, the distribution level of the audio signal to the position of the actual speaker obtained as shown in FIGS. 23 to 26 is determined as follows.

In other words, searching from a close distance,
Converts to the closest real speaker position, at this time
If there are n closest existing speakers at the same distance, the audio signal output is divided into n equal parts (1 /
The level is determined so that the value is output after multiplying by n.
Since there are usually no more than two, the distribution level of distribution is 0.5 + 0.5. As shown in FIG. 27, in the case of the side surface, weighting is performed according to the distance. If there is only one speaker, the level is determined so that all audio signals are output from that speaker. Further, as shown in FIG. 28, weighting is also performed according to the distance in each corner of the room. If there is only one speaker, the level is determined so that all audio signals are output from that speaker. That is, when searching for a speaker to be converted, L1 = L2 and Z0 = Y0 are set, and when determining the level, weighting according to the actual distance is performed.

Next, how to determine the coefficient Cn (n = 0 to 7) of each amplifier in the downmix circuit shown in FIG. 17 will be described with reference to FIGS. 29 to 33.

For example, in the example shown in FIG. 29, there are existing speakers SPgfl and SPgfr, but the coefficients C1 and C2 in this case are determined as follows.

First, in order to simplify the calculation, consider as follows.

That is, as shown in FIG. 30, it is assumed that the two left and right speakers L and R are located at a position of ± 30 ° from the listening position toward the front. Further, at this time, the position where the virtual speaker is to be arranged is a position to the right by θ.

The sound pressure difference between both ears at this time (sound pressure of right ear-sound pressure of left ear) ΔP shown in FIG. 31 is expressed by the following equation.

ΔP = P {1 / (γ−d / 2) −1 / (γ + d / 2)} P ... The sound wave from the sound pressure source at point 0 becomes a plane wave by the time it reaches both ears. , The sound pressure P is considered to be inversely proportional to the distance from the sound source.

Then, the sound pressure difference ΔPR between the two ears by the right speaker is expressed by the following equation.

ΔPR = PR {1 / (γ-d / 2) -1 /
(Γ + d / 2)} Further, the sound pressure difference ΔPL between both ears by the left speaker is expressed by the following equation.

ΔPL = PL {1 / (γ + d / 2) -1 / (γ-d / 2)} = -PL {1 / (γ-d / 2) -1 / (γ + d / 2)} Therefore, both The sound pressure difference ΔPR + L due to the speaker is expressed by the following equation (1).

ΔPR + L = (PR−PL) {1 / (γ−d / 2) −1 / (γ + d / 2)} (1) (However, addition by a vector is necessary to calculate this difference. , Here, the expression is shown as a scalar quantity for simplification of description) Further, the sound pressure difference ΔPR ′ due to the virtual speaker R ′ is
It is expressed by the following equation (2).

ΔPR ′ = PR ′ {1 / (γ′−d ′ / 2) −1 / (γ ′ + d ′ / 2)} (2) Here, it is desired to make R ′ have a speaker. Therefore, the sound pressure difference (1) between both ears by both speakers may be matched with (2).

That is, the following equation holds.

(PR-PL) {1 / (γ-d / 2) -1 /
(Γ + d / 2)} = PR ′ {1 / (γ′-d ′ / 2) −
1 / (γ '+ d' / 2)} ∴ (PR-PL) / PR '= {d' / (γ'2-d2 /
4)} / {d / (γ2-d2 / 4)} Here, since γ and γ'can be considered to be almost equal, γ
= Γ and assuming that the synthesis of the sound pressure from the left and right speakers matches the sound pressure from the virtual speakers, PR + PL = PR '(PR-PL) / PR' = (PR-PL) / (PR + PL) = PR / (PR + PL) -PL / (PR + PL) = C1-C2 ... Coefficient difference ∴C1-C2 = {d '/ (γ2-d'2 / 4)} / {d /
(Γ2-d2 / 4)} Here, since γ2 >> d2 / 4>d'2/4,γ2-d'2 / 4 = γ2 γ2-d2 / 4 = γ2, so C1-C2 = (d ' / Γ2) / (d / γ2) = d '/ d.

Here, since d = Lsin 30 °, d '= Lsinθ C1-C2 = Lsinθ / Lsin30 ° = sinθ / sin30 ° Becomes

Since C1 + C2 = 1, C1 = 1/2 (1 + sin θ / sin 30 °) C2 = 1/2 (1-sin θ / sin 30 °) Becomes

This state is shown in the graph of FIG. Figure 32
From the position where the virtual speaker is to be placed to each of the speakers R and L, as shown in FIG.
When assuming 1 and L2, the respective coefficients C1 and C2 have almost the same values as in the case where C1 = L2 / (L1 + L2) C2 = L1 / (L1 + L2).

Therefore, the coefficient Cn (n = 0 to 7) can be obtained by performing the calculation by the angle and the calculation by the distance.

When other processing such as delay is performed, the difference between C1 and C2 is small. In practice, the value Cn obtained by this calculation is quantized and used, so that it does not necessarily have to be exactly this value.

Next, how to determine the delay time Td of each amplifier in the downmix circuit shown in FIG. 17 will be described with reference to FIG.
It will be described with reference to FIGS.

For example, in the example shown in FIG. 34, L (left)
There is a speaker and an R (right) speaker.

In this case, as shown in FIG. 35, the sound heard by the right ear is (γ-
The sound emitted from the R speaker arrives after d / 2) / C seconds,
The sound emitted from the L speaker arrives after (γ + d / 2) / C seconds. Similarly, for the sound heard with the left ear, the sound of the L speaker arrives after (γ−d / 2) / C seconds, and R after (γ + d / 2) / C seconds.
The sound of the speaker arrives.

Therefore, the first arriving sound is the same (γ-d / 2) / C seconds later in both ears.

Assuming that the sound source is at R ', the time to reach the right ear is (γ'-d / 2) / C and the time to reach the left ear is (γ' + d / 2) / C. Becomes

Therefore, the time difference Δt of the sound that first reaches each ear is Δt = d ′ / C.

Now, paying attention to the time of the sound that reaches the ears first from the L speaker and the R speaker, to give the same time difference as when the sound source is at R ', R is given.
Time (γ-d / 2) / C and L when the speaker reaches the right ear
The difference between the time (γ-d / 2) / C at which the speaker reaches the left ear should be Δt, so the sound of the left speaker is simply Δt.
= D '/ C may be delayed.

However, since d '= Lsinθ and L is usually 15 to 18 cm, L = 18 cm
Then, Δt = Lsin θ / C.

Here, assuming that the sound velocity C = 340 m / sec, Δt = 530 μsec · sin θ.

Therefore, the time difference given to both speakers is Td = Δt = 530μsec ・ sinθ And it is sufficient.

Actually, this time difference also depends on the sound pressure to be presented, and this value fluctuates depending on how the sound pressure difference between the left and right speakers is given. When increasing the sound pressure difference, this time difference Td may be small or may be 0 in some cases. On the other hand, when reducing the sound pressure difference, the time difference Td is increased in accordance with the degree.

As described in detail above, according to the present embodiment, the downmix circuit uses the surround control information specified by the producer and reproduced from the DVD, and the real speakers that specify the speaker arrangement in which the viewer actually exists. By multiplying the coefficient Cn determined based on the arrangement information and changing the gain, the audio signal of each channel can be corresponded to the actual speaker arrangement according to the difference between the actual speaker arrangement and the speaker arrangement indicated by the surround control information. You can mix down to the audio signal. If only one surround control information 300 is written in one DVD, the determination of the coefficient Cn may be performed once when the reproduction of the DVD is started. On the other hand, if one is written in each VTS, it is performed every time the reproduction of the VTS is started. By doing so, even if the speaker arrangement is specified by the creator for each VTS, the surround sound field can be accurately reproduced for any VTS. Also, if this surround control information is written in the control information of each audio packet, this surround control will be performed one by one when the audio stream selected for output is output as digital data to an external device (receiver, etc.). There is no need to add information. Furthermore, the downmix circuit is a DS
Delay time T between speakers by performing signal processing by P etc.
It is also possible to control d and the like.

Note that the function of performing mixdown (the downmix circuit shown in FIG. 17, wiring therefor, etc.) may be provided in the reproducing apparatus S2 itself, but is connected to each speaker having a function of communicating with the reproducing apparatus S2. A receiver or the like may be provided. In addition, in order to perform signal conversion so as to reproduce this surround sound field more accurately, not only information on the actual speaker arrangement indicating the actual arrangement of each speaker but also information on the sensitivity and output wattage of each speaker should be provided. It may be specified in the reproducing apparatus S2 together with the real speaker arrangement information, and the level may be determined based on the sensitivity and wattage of the speaker. In this case,
For example, when the sensitivities of the left and right speakers and the front and rear speakers are different from each other, the audio signal may be converted more accurately by increasing the level of the audio signal given to the speaker having a relatively low sensitivity.

In the above-described embodiment, the signal conversion processing is performed based on the difference between the speaker arrangement indicated by the surround control information 300 shown in FIG. 5 and the speaker arrangement indicated by the real speaker arrangement information. The signal conversion processing can be performed based on the difference between the speaker arrangement indicated by the surround mode information 400 shown in FIG. 4 and the speaker arrangement indicated by the existing speaker arrangement information. Therefore, even when the surround mode information 400 is used, the audio signal of each channel can be mixed down into the audio signal corresponding to the actual speaker arrangement, as in the above embodiment, and the delay time T between the speakers can be reduced.
It is also possible to control d and the like.

As described above, according to this embodiment, D described in the above-mentioned “(I) Embodiment of information recording medium” is used.
The VD1 can be reproduced, and the surround sound field intended by the creator can be reproduced using the speaker arrangement unique to the viewer through the audio signals of the plurality of channels and the surround control information. As described above, according to each embodiment,
For example, surround control information with a relatively small amount of information (for example,
For example, 4 bits per channel to indicate 16 different positions.
By using the information of
Combination placement of speakers for rich multi-surround
Can be specified relatively easily, and the viewer can
The round sound field can be reproduced relatively easily.

[0182]

[0183]

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a physical configuration of data in a DVD as an embodiment of the present invention.

2 is a conceptual diagram showing a logical configuration of data in the DVD of FIG.

3 is a conceptual diagram showing a configuration of an interleaved unit in the DVD of FIG.

FIG. 4 is a conceptual diagram showing an arrangement of 15 types of speakers placed in a room set for the DVD of FIG.

5 is a conceptual diagram showing an example of a data structure of surround control information written in the DVD of FIG. 1 and its corresponding relationship.

6 is a table showing an example of audio channel content data included in the surround control information of FIG.

7 is a conceptual diagram showing a speaker arrangement indicated by the audio channel content data of FIG.

8 is a table showing another example of audio channel content data included in the surround control information of FIG.

9 is a conceptual diagram showing a speaker arrangement indicated by the audio channel content data of FIG.

10 is a conceptual diagram showing an example of a data structure of surround mode information written on the DVD of FIG. 1. FIG.

11 is a conceptual diagram showing a speaker arrangement corresponding to one of a plurality of modes indicated by surround mode information in FIG.

FIG. 12 shows the DV of FIG. 1 as another embodiment of the present invention.
It is a block diagram of the information recording device for recording D.

FIG. 13 shows the DV of FIG. 1 as another embodiment of the present invention.
It is a block diagram of the information reproducing | regenerating apparatus for reproducing D.

14 is a plan view of a display screen showing one display screen on the display of the reproducing apparatus in FIG.

FIG. 15 is a plan view of a television screen showing one display screen on the television connected to the reproducing apparatus of FIG.

16 is a conceptual diagram showing an example of conversion of an audio signal in the reproducing apparatus of FIG.

FIG. 17 is a block diagram showing a downmix circuit connected to the audio output of the playback device of FIG.

18 is a conceptual diagram showing the arrangement of speakers for explaining the signal conversion method by the downmix circuit of FIG.

19 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion method by the downmix circuit of FIG.

20 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion method by the downmix circuit of FIG.

21 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion system by the downmix circuit of FIG.

22 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion method by the downmix circuit of FIG.

23 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion method by the downmix circuit of FIG.

24 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion system by the downmix circuit of FIG.

25 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion method by the downmix circuit of FIG.

FIG. 26 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion method by the downmix circuit of FIG.

27 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion system by the downmix circuit of FIG.

28 is a conceptual diagram showing an arrangement of speakers for explaining a signal conversion method by the downmix circuit of FIG.

29 is a conceptual diagram illustrating a method of determining the coefficient Cn of each amplifier by the downmix circuit of FIG.

30 is a conceptual diagram illustrating a method of determining the coefficient Cn of each amplifier by the downmix circuit of FIG.

31 is a conceptual diagram illustrating a method of determining the coefficient Cn of each amplifier by the downmix circuit of FIG.

32 is a conceptual diagram illustrating a method of determining a coefficient Cn of each amplifier by the downmix circuit of FIG.

33 is a conceptual diagram illustrating a method of determining the coefficient Cn of each amplifier by the downmix circuit of FIG.

34 is a conceptual diagram illustrating a method of determining the delay time Td of each amplifier by the downmix circuit of FIG.

FIG. 35 is a conceptual diagram illustrating a method of determining the delay time Td of each amplifier by the downmix circuit of FIG. 17.

36 is a conceptual diagram illustrating a method of determining the delay time Td of each amplifier by the downmix circuit of FIG.

FIG. 37 is a table showing surround mode information in the conventional Dolby AC3 system.

38 is a conceptual diagram showing a speaker arrangement corresponding to one of a plurality of modes indicated by surround mode information in the Dolby AC3 system in FIG. 37.

[Explanation 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 pack 43 ... Audio pack 44 ... Sub picture pack 50 ... PCI packet 51 ... DSI Packet 52 ... GOP 60 ... Program 61, 61A, 61B ... PGC 62 ... Title 70 ... VTR 71 ... Memory 72 ... Signal processing unit 73 ... Hard disk device 74 ... Hard disk device 75 ... Controller 76 ... Multiplexer 77 ... Modulator 78 ... Mastering Device 80 ... Pickup 81 ... Demodulation correction section 82, 84 ... Stream switch 83 ... Track buffer 85 ... System buffer 86 ... Demultiplexer 87 ... VBV buffer 88 ... Video decoder 89 ... Sub picture buffer 90 ... Sub Kucha decoder 92 ... Audio buffer 93 ... Audio decoder 94 ... PCI buffer 95 ... PCI decoder 96 ... Highlight buffer 97 ... Highlight decoder 98 ... Input section 99 ... Display 100 ... System controller 101 ... Drive controller 102 ... Spindle motor 103 ... Slider Motors 120a, 120b, 120c, 120d ... Downmix circuit 300 ... Surround control information 400 ... Surround mode information S1 ... Recording device S2 ... Reproducing device DK ... Optical disc Sr ... Compression multiple signal Sa ... Additional information signal Sdm ... Demodulation signal Sad ... Audio Signal Ssp ... Sub video signal Sv ... Video signal

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiaki Moriyama 6-1, 1-1 Fujimi, Tsurugashima City, Saitama Pioneer Corporation Research Institute (72) Inventor Akihiro Tozaki 6-1, 1-1 Fujimi, Tsurugashima City, Saitama Pioneer Incorporated Research Institute (72) Inventor Junichi Yoshio 4-2610 Hanazono, Tokorozawa, Saitama Pioneer Co., Ltd. Tokorozawa Plant (56) Reference JP-A-8-336104 (JP, A) JP-A-8-31096 (JP, A) JP 5-327637 (JP, A) JP 5-234257 (JP, A) JP 5-325421 (JP, A) (58) Fields investigated (Int. Cl. ⁷⁾ , DB name) G11B 20/10 H04S 3/00

Claims (34)

(57) [Claims] 1. A means for generating a multiplexed signal including audio information of a plurality of channels, and surround control information provided for each of the channels, the mixer indicating a combination mode of the channels.
Tsu box mode data and, shown with and each of said Chang placement of the speakers to the audio information of each of the channels is output
A voice channel content data provided in correspondence to each of the panel, means for generating additional information including a surround control information consisting of the multiplex signal and with said additional information are multiplexed, it is recorded on the information recording medium recording An information recording apparatus comprising: 2. The information recording apparatus according to claim 1, wherein the plurality of channels are eight channels with channel numbers 0 to 7 at maximum. 3. The information recording apparatus according to claim 1, wherein the speaker is arranged in 16 types. 4. The information recording apparatus according to claim 1, wherein the surround control information of channel number 0 and channel number 1 is mode data indicating that downmix has been performed, and the mix mode. The surround control information from channel number 2 to channel number 7 is composed of data and the audio channel content data, and is composed of combination parameter data indicating combination characteristics of the audio information, the mix mode data, and the audio channel content data. An information recording device characterized by being configured. 5. The information recording device according to claim 1, wherein the surround control information is set when the speakers corresponding to the same position for a plurality of the channels are designated. An information recording device, wherein the surround control information corresponding to the smaller channel number corresponds to the speaker arranged outside. 6. The information recording device according to claim 1, wherein the information recording medium is a stamper disk. 7. The information recording apparatus according to claim 6, further comprising replication means for manufacturing a replica disc using the stamper disc. 8. A replica disc recorded by the information recording apparatus according to claim 7. 9. A step of generating a multiplex signal including audio information of a plurality of channels, and surround control information provided for each of the channels, the mixer indicating a combination mode of the channels.
Tsu box mode data and, shown with and each of said Chang placement of the speakers to the audio information of each of the channels is output
A step of generating additional information including surround control information consisting of audio channel content data provided in correspondence with each of the channels, and a recording for multiplexing the multiplexed signal and the additional information and recording them on an information recording medium. An information recording method comprising the steps of: 10. The information recording method according to claim 9, wherein the plurality of channels are eight channels with channel numbers 0 to 7 at maximum. 11. The information recording method according to claim 9, wherein there are 16 types of arrangement of the speakers. 12. The information recording method according to claim 9, wherein each of the surround control information of channel number 0 and channel number 1 is mode data indicating that downmix has been performed, and the mix mode. The surround control information from channel number 2 to channel number 7 is composed of data and the audio channel content data, and is composed of combination parameter data indicating combination characteristics of the audio information, the mix mode data, and the audio channel content data. An information recording method characterized by being configured. 13. The information recording method according to claim 9, wherein the surround control information is set when the speakers corresponding to the same position for a plurality of the channels are designated. An information recording method, wherein the surround control information corresponding to the smaller channel number corresponds to the speaker arranged outside. 14. The information recording method according to claim 9, wherein the information recording medium is a stamper disk. 15. The information recording method according to claim 14, further comprising a replication step of manufacturing a replica disc using the stamper disc. 16. A replica disc recorded by the information recording method according to claim 15. 17. The audio information of a plurality of channels and surround control information provided for each of the channels, which indicates a combination mode of each of the channels.
Scan mode data and, shown with and each of said channels the arrangement of the speakers should voice information of each of the channels is output
An information reproducing apparatus for reproducing the audio channel content data, the information from the information recording medium which surround the control information is recorded consisting provided in correspondence to each of the reading means for reading the recorded information, the voice information An information reproducing apparatus comprising: a sound demodulating means for demodulating the sound and a controlling means for controlling the sound demodulating means. 18. The information reproducing apparatus according to claim 17, wherein the control unit identifies a speaker position to which the audio information of the plurality of channels should be output, based on the surround control information. Information reproduction device. 19. The information reproducing apparatus according to claim 17, wherein the control unit controls the audio demodulating unit based on the surround control information. 20. The information reproducing apparatus according to claim 17, wherein the plurality of channels are eight channels with channel numbers 0 to 7 at maximum. 21. The information reproducing apparatus according to claim 17, wherein the speakers are arranged in 16 types. 22. The information reproducing apparatus according to claim 17, wherein the surround control information of channel number 0 and channel number 1 is mode data indicating that downmix has been performed, and the mix mode. The surround control information from channel number 2 to channel number 7 is composed of data and the audio channel content data, and is composed of combination parameter data indicating combination characteristics of the audio information, the mix mode data, and the audio channel content data. An information reproducing apparatus characterized by being configured. 23. The information reproducing apparatus according to claim 17, wherein the surround control information is set when the speakers corresponding to the same position for a plurality of the channels are designated. An information reproducing apparatus, wherein the surround control information corresponding to the smaller channel number corresponds to the speaker arranged outside. 24. The information reproducing apparatus according to any one of claims 17 to 23, wherein a plurality of audio channels are provided according to a difference between an actual speaker arrangement and a speaker arrangement indicated by the surround control information. An information reproducing apparatus further comprising downmix means for downmixing audio information into an output signal corresponding to an actual speaker arrangement. 25. The information reproducing apparatus according to any one of claims 17 to 24, wherein the control unit displays speaker arrangement based on the surround control information on a display unit. . 26. Audio information of a plurality of channels and surround control information provided for each of the channels, the combination information indicating a combination mode of each of the channels.
Scan mode data and, shown with and each of said channels the arrangement of the speakers should voice information of each of the channels is output
A of the audio channel content data provided in correspondence to each information reproducing method surround control information to reproduce information from the recorded information recording medium comprising a reading step reading the recorded information, the voice information And a control step of controlling the demodulation step. 27. The information reproducing method according to claim 26, wherein the control step identifies a speaker position to which the audio information of the plurality of channels should be output, based on the surround control information. 28. The information reproducing method according to claim 26, wherein the control step demodulates the audio information based on the surround control information. 29. The information reproducing method according to claim 26, wherein the plurality of channels are eight channels with channel numbers 0 to 7 at maximum. 30. The information reproducing method according to claim 26, wherein the speakers are arranged in 16 types. 31. The information reproducing method according to any one of claims 26 to 30, wherein the surround control information of channel number 0 and channel number 1 is mode data indicating that downmix has been performed, and the mix mode. The surround control information from channel number 2 to channel number 7 is composed of data and the audio channel content data, and is composed of combination parameter data indicating combination characteristics of the audio information, the mix mode data, and the audio channel content data. An information reproducing method characterized by being configured. 32. The information reproducing method according to claim 26, wherein the surround control information is set when the speakers corresponding to the same position for a plurality of the channels are designated. An information reproducing method, wherein the surround control information corresponding to the smaller channel number corresponds to the speaker arranged outside. 33. The information reproducing method according to any one of claims 26 to 32, wherein a plurality of audio channels are selected according to a difference between an actual speaker arrangement and a speaker arrangement indicated by the surround control information. An information reproducing method, further comprising the step of downmixing audio information into an output signal corresponding to an actual speaker arrangement. 34. The information reproducing method according to claim 26, further comprising a step of displaying a speaker arrangement based on the surround control information.