JP3999101B2 - Recording medium reproducing apparatus and method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a reproducing apparatus and method for reproducing a recording medium.
[0002]
[Prior art]
In a conventional karaoke player, external devices such as a lighting device and a background video device are controlled in real time in response to a karaoke performance sound obtained by playing a recording medium. In this case, real-time data is recorded along with the performance sound on the recording medium. Real-time data is read from the recording medium together with the performance sound at the time of performance. For example, in the case of a lighting device, the color and illuminance of the illumination change, and in the case of a background video device, it is displayed on the display. The background image of the lyric image of the performance song will be in accordance with the content of the performance song.
[0003]
[Problems to be solved by the invention]
In such a conventional reproducing apparatus, appropriate real-time control for an external device such as a video apparatus is desired in accordance with the reproduction of the performance sound from the recording medium.
Accordingly, an object of the present invention is to provide a recording medium reproducing apparatus and method capable of appropriately controlling an external device in real time, for example.
[0004]
[Means for Solving the Problems]
The playback device of the present invention has an information area consisting of a non-real-time file area and a real-time file area, In the non-real-time file area, information on the entire recording medium and access information indicating the position of each of the plurality of real-time files in the recording medium are recorded, The real-time file area includes a plurality of real-time files, and each of the plurality of real-time files is , The file at the beginning Set an external device that supports From a control information area for recording control information and a time division multiplex recording area for audio data and real-time data Become A playback device for playing back a recording medium, the reading means for reading information from the recording medium, the access information in the non-real-time file area from the read information by the reading means, and the real-time file In the first part of Extraction means for extracting control information; Based on the access information extracted by the extraction means The audio data and the real-time data are reproduced from information read by the reading means. And controlling an external device based on the control information extracted by the extracting means And a reproducing means.
[0005]
The playback method of the present invention has an information area consisting of a non-real time file area and a real time file area, In the non-real-time file area, information on the entire recording medium and access information indicating the position of each of the plurality of real-time files in the recording medium are recorded, The real-time file area includes a plurality of real-time files, and each of the plurality of real-time files is , The file at the beginning Set an external device that supports From a control information area for recording control information and a time division multiplex recording area for audio data and real-time data Become A reproduction method for reproducing a recording medium, wherein a reading process for reading information from the recording medium, the access information in the non-real-time file area from the reading information of the reading process, and the real-time file In the first part of An extraction process for extracting control information; Based on the access information extracted in the extraction process The audio data and the real-time data are reproduced from the read information of the reading process. And controlling an external device based on the control information extracted in the extraction process. And a reproduction process.
[0006]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the karaoke player shown in FIG. 1, the autochanger 1 is provided with a disc storage portion 2, a disc transport portion 3 and a player portion 4. A plurality of discs 5 are stored in the disc storage unit 2, and one of the plurality of discs 5 is transported onto a turntable (not shown) of the player unit 4 by the transport unit 3 when playing a disc. When the performance is completed, the disc on the turntable is returned to a predetermined position in the disc storage unit 2 by the transport unit 3. The player unit 4 plays a disk on the turntable and outputs read data. The disc transport unit 3 and the player unit 4 operate in response to a command from a system controller 7 described later.
[0007]
A data separation circuit 6 is connected to the data output of the player unit 4. The data separation circuit 6 separates the data output from the player unit 4 into various data such as compressed image data, compressed audio data, real-time data, control data, and information data, and outputs the data from individual output terminals. In addition to the system controller 7 described above, an audio decoder 8 and a video decoder 9 are connected to the data separation circuit 6. The data separation circuit 6 is provided with a terminal for connecting an external device. In this apparatus, as an external device, an illumination device 25, a background video device 26 including a video camera and a recording medium performance device, and a sound processing device 27 including a DSP (Digital Signal Processor) are provided, which are devices for karaoke effects. It is. The lighting device 25 controls lighting in a so-called karaoke room. The background image device 26 is a background image of character information such as lyrics displayed on the display 22, for example, a photograph image of a singer or the like using a video camera. This is for projecting an image according to the situation, the location of the song, or the season of the song, and generates a background video signal indicating the background video. The sound processing device 27 is a device for controlling the sound field in the karaoke room by karaoke sound or singing sound, and is disposed in the sound reproduction system as will be described later.
[0008]
External device control interfaces 30 to 32 having a function of converting real-time data are provided between the data separation circuit 6 and the illumination device 25, the background video device 26, and the sound processing device 27. The interfaces 30 to 32 are constituted by, for example, a microcomputer, and further have an internal memory (not shown) in which a conversion table is partially written in advance. This conversion table differs depending on the connected external device.
[0009]
The audio decoder 8 decodes the separated compressed audio data and restores it as uncompressed audio data such as PCM digital data. Since the audio data of a plurality of channels is compressed in the compressed audio data, the audio data of the channel designated according to the signal from the system controller 7 is restored. The audio data output from the audio decoder 8 is supplied to the D / A converter 11 and converted into an analog audio signal. The analog audio signal is supplied to the speaker 19 via the audio processing device 27 and the amplifier 18. It has become so. Separately, the output signal of the singing microphone 28 is supplied to the audio processing device 27 via an amplifier 29.
[0010]
The video decoder 9 decodes the separated compressed image data and restores it as uncompressed image data. The image data output from the video decoder 9 is supplied to the D / A converter 12 and converted into an analog moving image video signal. The moving image signal is directly output as it is and is supplied to the image synthesizer 21. The system controller 7 is composed of a microcomputer and accepts separated information data. Information data is stored in a RAM (Random Access Memory) 13 and is selectively read from the RAM 13. The read information data is processed in the system controller 7 or supplied to the display character control circuit 20. The display character control circuit 20 has a character generator and a V-RAM, generates display character data corresponding to the information data, writes it into the V-RAM, and synchronizes with the above-mentioned synchronizing signal of the video image signal. The display character data is read out from the image data, converted into a character video signal and output to the image synthesizer 21. The character video signal is synthesized by the image synthesizer 21 with the moving picture video signal from the D / A converter 12 or the background video signal from the background video device 26.
[0011]
An operation unit 15, a recording device 16 and a printer 17 are connected to the system controller 7. The operation unit 15 has a keyboard for designating a performance song, and also has a reception unit (not shown) that accepts performance song designation from the remote control transmitter 23. The recording device 16 is for recording the performance sound and singing sound of karaoke on a recordable compact disc (not shown) such as a CD-R. Audio signals indicating performance sounds and singing sounds are supplied from the amplifier 18 to the recording device 16. The printer 17 is for printing recorded song information such as a song title on a label attached to a compact disc.
[0012]
Next, the contents recorded on the disc 5 played by the player unit 4 will be described. All information is recorded on the disk 5 as digital signals. As shown in FIG. 2, each information recording area of the disk 5 has a non-real time file area and a real time file area. An access information file such as a TOC and a karaoke information file such as a song name are recorded in the non-real-time file area. In the real-time file area, N (N is an integer and corresponds to the number of songs) real-time files are recorded in accordance with, for example, the MPEG (Moving Picture Expert Group) standard. Each real-time file is called in units of chapters, and one chapter corresponds to one song. A chapter real-time file is composed of compressed image data and audio data of one song, and real-time data for external device control, and these data are time-division multiplexed and recorded in the file. The real-time data indicates the degree of excitement of the music in 16 levels, and indicates the start time and length in time units (for example, frame units).
[0013]
The access information file is composed of information indicating the position of each chapter in the disk and the time length, and any chapter can be accessed by referring to this information. The karaoke information file is composed of various information relating to the disc and the song, and its structure is shown in FIG. The karaoke information file consists of disc related information and one or more chapter information. One chapter information represents information related to one chapter, that is, a song, and the number of chapter information matches the number of songs. The disc related information is information relating to the entire disc, for example, information such as disc content, disc identification, the number of songs recorded on the disc, and the like.
[0014]
Each chapter information includes a chapter information header, in-chapter common information, telop channel-specific information, and language-specific information, and the chapter information header includes identification information and information indicating the content of the chapter information. Common information within the chapter includes (1) nationality of the song, (2) the date of the song release, (3) song length, (4) copyright code, (5) singer classification, (6) song genre, (7) Song theme image and song theme, (8) Song situation, (9) Song special genre, (10) Song tempo, (11) Song location image, (12) Song difficulty, 13) multi-audio mode, (14) background video information, (15) control device information, and (16) DSP mode information.
[0015]
The information for each telop channel is information relating to character information (telop) corresponding to the chapter. It is possible to assign a plurality of character information series (telop channels) to one chapter. For example, a plurality of selectable telops of different languages can be added to one chapter. The information by telop channel includes information on (1) number of telop channels, (2) telop channel number, (3) telop language and (4) telop character form, and information on telop channel number, telop language and telop character form. Each information is repeatedly recorded by the number of telop channels.
[0016]
Language-specific information is information that depends on the language of the chapter information. (1) Number of information by language, (2) Language code, (3) Descriptive code system, (4) Information size by language, (5 ) Song name, (6) Reading song name, (7) Singer name, (8) Reading singer name, (9) Lyricist name, (10) Lyricist name reading, (11) Composer name, (12) It consists of information such as composer name reading, (13) first phrase, (14) first phrase reading, and (15) location data. Information from (2) language code to (15) location data is repeatedly recorded by the number of information by language.
[0017]
Next, the operation of the above karaoke player will be described. When a disk is newly stored in the disk storage unit 2 of the autochanger 1, first, an installation operation is performed. In this installation operation, the system controller 7 detects that a new disk is stored in the disk storage unit 2 as shown in FIG. 4 (step S1), so that the disk is mounted on the turntable of the player unit 4. A disk set command is issued to the disk transport unit 3 (step S2). When the disc transport unit 3 finishes mounting the disc on the turntable of the player unit 4, it is supplied to the system controller 7 as a mounting end signal. Therefore, when the system controller 7 obtains the mounting end signal (step S3), it instructs the player section 4 to drive the disk to rotate (step S4), and instructs the data reading (step S5). The player unit 4 rotates the disk together with the turntable, and after the rotation reaches a predetermined rotation speed, reads and outputs data from the non-real-time file area of the disk. The read data is supplied to the system controller 7 via the data separation circuit 6 and temporarily stored in a buffer memory (not shown) in the system controller 7.
[0018]
The system controller 7 sequentially writes the supplied data to the external RAM 13 (step S6), and determines whether or not the data reading by the player unit 4 has been completed (step S7). For example, the data supplied by the execution of step S6 is written into the RAM 13 until it is determined that the data reading has been completed by supplying a bit indicating the end of the data supply. When the data reading is completed, an operation stop command is issued to the player unit 4 (step S8), and a disc return command is issued to the disc transport unit 3 (step S9). Therefore, the player unit 4 stops the rotational drive of the turntable, and then the disc transport unit 3 transports and stores the disc on the turntable to a predetermined storage position of the disc in the disc storage unit 2. After executing step S9, the system controller 7 determines whether another new disk has been stored (step S10). If another new disk is stored in the disk storage unit 2, the process proceeds to step S2, and if no other new disk is stored, the installation operation is terminated.
[0019]
The data to be written into the RAM 13 may be all of the access information file and the karaoke information file described above, but it is difficult to have enough capacity to store all the data, so at least the disk number unique to the disk and the disk storage of the disk Only the song data such as the address indicating the storage position of the section 2, the position of the song in the disc, the song name, the singer name, the songwriter name, the composer name, the song length, and the copyright code.
[0020]
The storage of a new disk can be obtained by an input from the operation unit 15 by the user. In addition, a sensor for detecting the presence or absence of a disk is provided at each storage position of the disk storage unit 2, and an area for storing the detection result is provided in the RAM 13. And discriminating whether a new disk is stored, and writing the detection result in the RAM 13.
[0021]
Further, in the above embodiment, the song data such as the song name is obtained at the time of installation of the disc recorded together with the image data and the audio data, but the disc installation is performed from the dedicated disc on which only the song data such as the song name is recorded. Sometimes you may get song data. Alternatively, the song data of a plurality of discs on which image data and audio data are recorded are recorded on one of the plurality of discs, and these song data are obtained when the one disc is installed. May be.
[0022]
After the installation operation is performed as described above, karaoke playback can be performed for the song selected by the user. First, in the music selection operation, the user inputs the music selection number by operating the numeric keys or alphabet keys of the operation unit 15 or the remote control transmitter 23. The music selection number is composed of a plurality of digits, and is a number that designates a disc and a song recorded in the disc. When a key is operated, the music selection number is held in a buffer (not shown) in the operation unit 15. As shown in FIG. 5, the system controller 7 determines whether or not a music selection key (not shown) of the operation unit 15 has been operated at a predetermined timing or in an interrupt operation (step S11). Then, the music selection number is read from the buffer and written in the music selection list table of the RAM 13 (step S12). The music selection list table is formed in the RAM 13, and as shown in FIG. 6, a music selection number and a recording flag to be described later are written in the order of performance, and the order is advanced when the performance is completed. The music name corresponding to the read music selection number is read from the RAM 13 as information data (step S13), and the read data is supplied to the display character control circuit 20 (step S14). In the display character control circuit 20, display character data indicating a song title is generated and written in a predetermined position of the V-RAM. Display character data is read from the V-RAM and converted into a character video signal, which is then output to the image synthesizer 21. The character video signal is synthesized in the video synthesizer 21 by being output in place of the video video signal from the D / A converter 12 when the video synthesizer 21 is a signal indicating a predetermined color. Therefore, the music title is displayed on the display 22 as a character image, and it is confirmed that the key selection operation has been accepted.
[0023]
After executing step S14, the system controller 7 reads the copyright code corresponding to the read music selection number from the RAM 13 (step S15). Since there is a copyright code in the data read from the disk and written in the RAM 13 during the installation operation, it is read out. The copyright code is a code indicating the copyright owner of the song. It is determined whether or not the selected song is a recordable song based on the read copyright code (step S16). In a ROM (read only memory) 14 provided outside the system controller 7, as shown in FIG. 7, a copyright code, a copyright holder, and recording availability are written in advance as a recording availability data table. As for recording availability, “1” can be recorded, and “0” cannot be recorded. Therefore, it is determined from the recording availability data table whether or not the selected song is a recordable song. If recording is possible, a recordable display is made (step S17), and if recording is impossible, a record impossible display is made (step S18). These displays may be displayed on the display 22 or a display (not shown) for recording availability provided in the apparatus. In the case of displaying on the display 22, the display character control circuit 20 generates display character data indicating that recording is possible or impossible to record, and writes it in the V-RAM in response to a command from the system controller 7.
[0024]
The system controller 7 determines whether or not there is a recording reservation after executing step S17 because recording is possible (step S19). This is determined by whether or not the recording reservation key of the operation unit 15 or the remote control transmitter 23 has been operated. If there is a recording reservation, the recording flag in the music selection list table is set (step S20). Since “0” indicating non-recording is previously written as the initial value of the recording flag in the music selection list table, when the recording reservation key is operated, the recording flag is set to indicate recording corresponding to the music selection number. 1 ".
[0025]
Next, the disc performance operation will be described. As shown in FIGS. 8 to 10, when the system controller 7 is first instructed to start performance by operating the key of the operation unit 15 (step S21), the system controller 7 starts from the first performance in the music selection list table formed in the RAM 13. The music selection number and the recording flag are read (step S22). A disk address and a music number corresponding to the read music selection number are read from the RAM 13 (step S23), and a disk set command is issued to the disk transport unit 3 so that the disk of the read disk address is mounted on the turntable of the player unit 4. (Step S24). When the disc transport unit 3 finishes mounting the disc on the turntable of the player unit 4, it is supplied to the system controller 7 as a mounting end signal. Therefore, when the system controller 7 obtains the mounting end signal (step S25), it instructs the player unit 4 to drive the disk to rotate (step S26), and determines whether or not the disk performance can be started (step S26). S27). For example, when the performance is prohibited by the key operation of the operation unit 15, the disc performance is not started. If the disc performance can be started, data reading is instructed (step S28). The player unit 4 reads and outputs data from the non-real time file area of the disc. The read data is supplied to the system controller 7 via the data separation circuit 6 and temporarily stored in a buffer memory (not shown) in the system controller 7. The system controller 7 sequentially writes the above-mentioned (14) background video information, (15) control device information and (16) DSP mode information related to the read song number in the chapter common information from the supplied data to the external RAM 13. (Step S29), it is determined whether or not the reading of data by the player unit 4 is completed (Step S30).
[0026]
The data supplied by the execution of step S29 is written into the RAM 13 until it is determined that the data reading has been completed. When the data reading is completed, the control device information is read from the RAM 13 (step S31) and supplied to each external device (step S32). In the control device information, as shown in FIG. 11, one bit corresponds to one external device, and when the bit value is “1”, it indicates that the external device corresponding to the bit can be controlled. In the present apparatus, the illumination device 25, the background video device 26, and the sound processing device 27 are provided as external devices, so 1-bit data corresponding to these external devices is supplied. Therefore, when the supplied 1-bit data is “1”, the external device is set in a controllable state according to the real-time data.
[0027]
After executing step S32, the system controller 7 reads the background video information and the DSP mode information from the RAM 13 (step S33), and supplies the background video information to the background video device 26 and the DSP mode information to the audio processing device 27 (step). S34). In the background video device 26, an operation state is set according to the supplied background video information. In other words, it is set whether a background video signal indicating a background video of a photographed video of a singer or the like, a video of a song, a situation of a song, a location of a song, a season of a song, or the like should be output. In the audio processing device 27, DSP processing program and data such as reverberation time and multiplication coefficient for sound field control are set according to the DSP mode information. This data is set to a value suitable for the selected song, for example.
[0028]
As a result of this operation, the external devices 25 to 27 become operable in accordance with the real-time data, and the system controller 7 next instructs the disc performance from the track of the read music number (step S35). Therefore, the player unit 4 starts playing the music designated by the music selection number. Further, it is determined from the read recording flag whether recording is reserved or not (step S36). If the recording flag is set to “1”, a recording start command is issued to the recording device 16 (step S37). Since the audio signal including the singing sound is supplied from the amplifier 18 to the recording device 16, recording onto the compact disc is performed in response to the recording start command.
[0029]
After executing step S37, the system controller 7 reads the recorded music information corresponding to the music selection number read in step S22 from the RAM 13 (step S38). The recorded song information is at least a song name, a songwriter name, and a composer name, and information such as a singer, recording date and time, and location may be added. After reading the recorded music piece information, it is output to the printer 17 (step S39). The printer 17 prints the recorded song information on a label that is attached to the compact disc. Thus, if the label is affixed to the label surface of the recorded compact disc, the recorded music is recorded.
[0030]
Actually, after the execution of step S39 due to the operation delay of the player unit 4, the performance sound of the designated song is output. However, it goes without saying that after performing the operations of steps S36 to S39, a disk performance from the track of the read music number may be instructed. In the disc performance, the data output from the player unit 4 is separated by the data separation circuit 6, and the video signal and the audio signal reproduced from the compressed image data and the compressed audio data are output to the display 22 and the speaker 19. The real-time data separated in the data separation circuit 6 is supplied to the external device control interfaces 30 to 32. Each of the interfaces 30 to 32 repeatedly performs the same operation as follows.
[0031]
As shown in FIG. 12, first, it is determined whether or not a predetermined unit of real-time data has been received (step S51). If real time data of a predetermined unit is received, it is written in the internal memory (step S52), and the real time data is converted using the conversion table (step S53). Then, the converted real-time data is output to the external device (step S54). That is, in the case of the interface 30, it is output to the illumination device 25, in the case of the interface 31, it is output to the background video device 26, and in the case of the interface 32, it is output to the audio processing device 27. Since the conversion tables in the interfaces 30 to 32 are different from each other, the real-time data output to the external devices 25 to 27 have different contents.
[0032]
When the supplied 1-bit data in the control device information is “1” during the operation of step S 32, the lighting device 25 is already in a set state that can be controlled according to real-time data. The illuminance and color of the illumination change according to the real time data. When the supplied 1-bit data of the control device information is “1” during the operation of step S32, the background video device 26 is set in the operation state according to the background video information by the operation of step S34. Depending on the real-time data supplied from the interface 31, the content of the background video and its color change. Also, when the supplied 1-bit data of the control device information is “1” during the operation of step S32, the sound processing device 27 is set in the sound field control state according to the DSP mode information by the operation of step S34. Therefore, for example, the pitch and volume of the singing sound change according to the real-time data supplied from the interface 32.
[0033]
When the supplied 1-bit data in the control device information is “0”, the lighting device 25, the background video device 26, and the sound processing device 27 operate according to its own program. In this case, the illumination device 25 and the like may operate according to the reproduced karaoke performance sound. After executing step S39, the system controller 7 determines whether or not the performance of the selected song has been completed (step S40). This is determined from the time information in the control data supplied from the data separation circuit 6 by the disc performance. When the performance of the selected song is completed, a performance stop command is issued to the player unit 4 (step S41), and a disc return command is issued to the disc transport unit 3 (step S42). Therefore, the player unit 4 stops the disc playing operation, and the disc transport unit 3 transports the disc on the turntable to the predetermined storage position of the disc in the disc storage unit 2 after the turntable stops rotating. Store. After the disc return command is generated, the system controller 7 increments the music order in the music selection list table by one music (step S43), and determines whether or not the music selection number is recorded first in the music selection list table (step S44). . If the music selection number is recorded, the process returns to step S22 and the above operation is repeated. On the other hand, if the music selection number is not recorded, the performance operation is terminated.
[0034]
In the above-described embodiment, the player unit 4 reads and outputs data from the non-real-time file area of the disc in response to the data read command in step S28, but the present invention is not limited to this. For example, as shown in FIG. 13, since the control information area is provided at the beginning of each chapter unit file in each real-time file area, the common information in the chapter only for the song of the chapter is recorded here. Background video information, control device information, and DSP mode information may be read from the control information area.
[0035]
In the above-described embodiment, the external device control interfaces 30 to 32 simply convert real-time data according to the conversion table. However, the chapter read from the non-real-time file area or the control information area of the real-time file area is used. The system controller 7 supplies information on the genre, tempo, season, song theme, situation, region, etc. of the common information to the external device control interfaces 30 to 32, and the external device control interfaces 30 to 32 are real-time data. May be converted based on the conversion table and information from the system controller 7.
[0036]
For example, if the genre of the song is enka, the tempo is slow, the season is winter, the song theme is romance, the situation is izakaya, and the region is Tohoku, the external device control interface 30 first selects the lighting device 25. Although the rotation of the mirror ball (not shown) is slowed, the lighting is totally darkened, the background effect machine is controlled to set to snow, and then the lighting device 25 operates according to the setting when the song starts. When it comes to the rising part of the song, the lighting is controlled according to the real-time data, and the mirror ball is controlled to rotate faster.
[0037]
In the present invention, it is obvious that the recording medium on which at least the karaoke performance sounds of a plurality of songs are recorded is not limited to the disk but may be other recording media such as a tape. Furthermore, although the present invention has been described with respect to the case of reproducing a medium on which information compressed by MPEG or the like is recorded, the present invention is not limited to this, and a medium to which control information for controlling an external device can be added. If it is, the same effect can be produced.
[0038]
As described above, according to the present invention, for example, appropriate real-time control can be performed on an external device such as a video device in accordance with image data and real-time data that change according to reproduction of a performance sound.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a diagram showing a configuration of an information area of a disc.
FIG. 3 is a diagram showing a configuration of a karaoke information file.
FIG. 4 is a flowchart showing an installation operation.
FIG. 5 is a flowchart showing a music selection operation.
FIG. 6 is a diagram showing a music selection list table.
FIG. 7 is a diagram showing a recording availability data table.
FIG. 8 is a flowchart showing a disc performance operation.
FIG. 9 is a flowchart showing a continuation of the disc performance operation of FIG. 8;
10 is a flowchart showing a continuation of the disc performance operation of FIG. 9. FIG.
FIG. 11 is a diagram illustrating an example of control device information.
FIG. 12 is a flowchart showing the operation of the external device control interface.
FIG. 13 is a diagram showing a file structure of each chapter unit in the real-time file area.
[Explanation of main part codes]
1 Auto changer
2 Disc storage
3 Disc transport section
4 Player section
5 discs
7 System controller
16 Recording device
17 Printer
22 display
23 Remote control transmitter
25 Lighting equipment
26 Background video equipment
27 Speech processor
30-32 External device control interface

Claims (8)

It has an information area consisting of a non-real-time file area and a real-time file area,
In the non-real-time file area, information on the entire recording medium and access information indicating the position of each of the plurality of real-time files in the recording medium are recorded,
The real-time file area includes a plurality of real-time files, the plurality of real-time files, each includes a control information area for recording control information for setting an external device corresponding to the file to the head portion, the audio data and real time data A playback device for playing back a recording medium comprising a time-division multiplex recording area,
Reading means for reading information from the recording medium;
Extraction means for extracting the access information in the non-real-time file area and the control information in the head part of the real-time file from the read information by the reading means;
Reproducing means for reproducing the audio data and the real-time data from the read information by the reading means based on the access information extracted by the extracting means, and controlling an external device based on the control information extracted by the extracting means; A playback apparatus comprising:   2. The playback apparatus according to claim 1, wherein each of the plurality of real-time files corresponds to one real-time content.   3. The reproducing apparatus according to claim 1, wherein character information is further recorded in the non-real-time file area. In addition to the audio data and the real time data, image data is provided in the time division multiplex recording area of each of the plurality of real time files,
2. The reproduction means reproduces the image data together with the audio data and the real-time data from information read by the reading means based on the access information extracted by the extraction means. Playback device. It has an information area consisting of a non-real-time file area and a real-time file area,
In the non-real-time file area, information on the entire recording medium and access information indicating the position of each of the plurality of real-time files in the recording medium are recorded,
The real-time file area includes a plurality of real-time files, the plurality of real-time files, each includes a control information area for recording control information for setting an external device corresponding to the file to the head portion, the audio data and real time data A playback method for playing back a recording medium comprising a time division multiplex recording area,
A reading process of reading information from the recording medium;
An extraction process for extracting the access information in the non-real-time file area and the control information in the head part of the real-time file from the read information of the read process;
A reproduction process in which the audio data and the real-time data are reproduced from the read information in the reading process based on the access information extracted in the extraction process, and an external device is controlled based on the control information extracted in the extraction process. And a playback method comprising:   6. The reproduction method according to claim 5, wherein each of the plurality of real-time files corresponds to one real-time content.   7. The reproducing method according to claim 5, wherein character information is further recorded in the non-real-time file area. In addition to the audio data and the real time data, image data is provided in the time division multiplex recording area of each of the plurality of real time files,
6. The reproduction process according to claim 5, wherein the image data is reproduced together with the audio data and the real-time data from information read by the reading unit based on the access information extracted in the extraction process. The playback method described.

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