JP2002133784A - File reproducing device and folder recognizing method used for it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regenerate a folder unit from a storage medium storing a plurality of folders each including a prescribed number of files respectively. SOLUTION: A CD-ROM disk on which sound files are recorded in a file structure conforming to the standard of ISO(International Organization for Standardization) 9660, for example, is regenerated. A plurality of folders are stored in the CD-ROM disk, and a prescribed number of sound disks are included in each folder. When the CD-ROM disk is mounted, the information on the folder names and record positions of folders A1-AN is acquired from a pass table arranged at the first portion of a data area, the information on the file names and record positions of a prescribed number of sound files included in them is acquired from the record position portions of the folders A1-AN, and a file information table is generated for each folder. The folder can be recognized as a reproduction unit by utilizing the file information table for each folder, thus allowing the reproduction (including repeated reproduction and random reproduction) of the folder unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file reproducing apparatus for reproducing a predetermined file from a recording medium storing a plurality of folders each containing one or a plurality of files, and a folder recognizing method used therefor.

[0002]

2. Description of the Related Art In recent years, audio data compression techniques have been remarkably advanced, and a compression method capable of compressing data with little loss of sound quality in terms of audibility has begun to spread. As a compression method, for example, MP3 (MPEG Audio Layer-3), MPEG-2
AAC (Advanced Audio Coding), ATRAC (Adaptiv
e TRansform Acoustic Coding), TWIN-VQ (Transf
orm domain Weighted INterleave Vector Quantizatio
n) and WMA (Windows MediaAudio).

In recent years, audio data files (audio files) compressed by the above-described compression method have been
Recording on a disk-shaped recording medium such as a DR (CD-Recordable), and reproducing and decoding the above-mentioned audio file from a CD-ROM disk or a CD-R disk to obtain expanded audio data. CD players have also been proposed.

Some compression methods for compressing audio data have a very high compression ratio. When recording on a CD-R, the recording time is about 74 minutes in the uncompressed state. It has become possible to obtain a recording time twice as long as 740 minutes. Therefore, one CD-
It has become possible to record the contents of a plurality of original CDs on an R disk and enjoy the reproduction for a long time.

In this case, the CD-R disc contains a CD-R
As in the case of the OM disc, recording is performed in a file structure conforming to the ISO9660 standard. For example, a CD-R disc stores a plurality of folders, and each folder includes one or a plurality of audio files. Here, the folder includes audio files of all songs included in one original CD or audio files of arbitrary songs.

[0006]

As described above, since the contents of a plurality of original CDs can be recorded on a single CD-R disc, it is very convenient for carrying around. However, conventionally, a CD player capable of reproducing this kind of CD-R disc can reproduce only audio files included in one folder selected from a plurality of folders (including repeat reproduction and random reproduction). Did not.

An object of the present invention is to provide a file reproducing apparatus and the like which can reproduce a folder unit from a recording medium storing a plurality of folders each containing one or a plurality of files.

[0008]

SUMMARY OF THE INVENTION A file reproducing apparatus according to the present invention is a file reproducing apparatus for reproducing a predetermined file from a recording medium storing a plurality of folders each containing one or a plurality of files. And a reproducing unit for performing a reproducing operation using the recognition result of the recognizing unit.

Further, a folder recognition method according to the present invention comprises:
A method for recognizing a plurality of folders as a unit of reproduction in a reproducing apparatus that reproduces a predetermined file from a recording medium storing a plurality of folders each including one or a plurality of files. is there. For example, based on information on a plurality of folders recorded on a recording medium and information on files included in each of the plurality of folders, an information table having at least information on a recording position of the included file is created for each folder. The information table recognizes a plurality of folders as reproduction units.

For example, based on information on a plurality of folders recorded on a recording medium and information on files included in each of the plurality of folders, a file having information on at least a recording position of all files arranged in a folder order is provided. One information table and at least a second information table having information on the number of files included in each folder are created, and a plurality of folders are respectively recognized as reproduction units by the first and second information tables. It is.

Further, for example, based on information on a plurality of folders recorded on a recording medium and information on files included in each of the plurality of folders, information on at least which folder is included in all the files and a recording position are provided. Is created, and a plurality of folders are respectively recognized as reproduction units based on the information table.

In the present invention, the recording medium stores a plurality of folders each containing one or a plurality of files. For example, this recording medium is ISO9660.
CD-R recorded in a file structure in accordance with the standard
Discs and CD-ROM discs. Further, for example, the file is an audio file, an image file, or the like.

In the file reproducing apparatus that handles the recording medium, a plurality of folders stored in the recording medium are recognized as reproduction units. For example, based on information on a plurality of folders recorded on a recording medium and information on files included in each of the plurality of folders, an information table having at least information on a recording position of the included file is created for each folder. The information table recognizes a plurality of folders as reproduction units.

For example, based on information on a plurality of folders recorded on a recording medium and information on files included in each of the plurality of folders, at least information on at least a recording position of all files arranged in the folder order is stored. One information table and a second information table having at least information on the number of files included in each folder are created, and a plurality of folders are respectively recognized as reproduction units based on these information tables. In this case, in order to know the recording position of each file included in the predetermined folder, the file information part of the predetermined folder in the first information table is obtained from the number-of-files information recorded in the second information table. Done.

When playing back a file included in the predetermined folder, as described above, the file information portion of the predetermined folder in the first information table is obtained, and the third portion obtained by extracting the portion is obtained. An information table may be created. As a result, playback of files included in a predetermined folder (including repeat playback and random playback)
In some cases, only the third information table needs to be referred to, and the control operation can be simplified.

For example, based on information on a plurality of folders recorded on a recording medium and information on files included in each of the plurality of folders, information on at least which folder is included in all the files and a recording position are provided. Is created, and a plurality of folders are respectively recognized as reproduction units based on the information table.

When the files included in the predetermined folder are reproduced, another information table may be created by extracting the file information portion of the predetermined folder searched in the information table as described above. Good. Thus, when reproducing files (including repeat reproduction and random reproduction) included in the predetermined folder, only the other information table needs to be referred to, and the control operation can be simplified.

As described above, in the file reproducing apparatus,
A plurality of folders stored in the recording medium can be recognized as reproduction units. Therefore, by performing a reproducing operation using the recognition result, it is possible to reproduce only the files included in the predetermined folder, repeat reproduction or random reproduction of the files included in the predetermined folder, and further perform random reproduction in folder units. It becomes possible.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 shows the CD-D
A-disk and CD-RO in which audio files are recorded in a file structure conforming to the standard of ISO9660
1 shows a configuration of a CD player 100 capable of reproducing an M disk (including a CD-R disk on which similar recording is performed). In this case, a plurality of folders are stored on the CD-ROM disc, and each folder includes one or a plurality of audio files. It is assumed that each audio file is composed of compressed audio data that has been compressed by the MP3 compression method.

The CD player 100 has a control microcomputer 101 for controlling the entire operation. The control microcomputer 101 is connected to a display unit 103 which includes an operation unit 102 for a user to perform various operations and a liquid crystal display (LCD) and displays the state of the CD player 100 and the like. In the control microcomputer 101,
ROM 104 in which an operation program and necessary data are stored in advance, and R used as a working area or the like.
An AM 105 is provided.

Also, the CD player 100 stores the disc 1
, A spindle motor 107 for rotatingly driving the optical disk 06 at a constant linear velocity (CLV), an optical pickup 108 for reproducing data from the disk 106, and a slide motor for moving the optical pickup 108 in the radial direction of the disk 106. 109.
These spindle motor 107 and slide motor 1
The operation of 09 is controlled by the servo circuit 110.

The CD player 100 processes output signals of a plurality of photodetectors (not shown) constituting the optical pickup 108 to obtain a reproduction RF signal SRF, a tracking error signal STE, and a focus error signal SFE. It has an amplifier unit 115. Tracking error signal ST
E, the focus error signal SFE is the servo circuit 1 described above.
10 is supplied. Even without the above, the servo circuit 110
Using the error signals STE and SFE, the optical pickup 108
Of tracking servo and focus servo.

The CD player 100 includes an RF signal processing unit 116 for performing processing such as waveform equalization on the reproduced RF signal SRF output from the RF amplifier unit 115,
EFM (Eight to Eight)
Fourteen Modulation) and CI
It has a CD decoder 117 for performing an error correction process based on RC (Cross Interleave Reed-Solomon Code).

In the CD decoder 117, the CLV
A control signal SCLV is also generated, and the CLV control signal SCLV is supplied to the servo circuit 110 to control the spindle motor 10
7 is used to control the rotation speed. The CLV control is performed, for example, by measuring the length of the longest pit portion of the frame synchronization, and performing control so that the length becomes the reference time length.

The CD player 100 performs descrambling processing on the output data of the CD decoder 117,
It has a CD-ROM decoder 118 for performing error detection, correction processing and the like to obtain CD-ROM data.
The CD-ROM decoder 118 is connected to a RAM 119 as a working memory for performing the above-described processing.

The CD player 100 has a CD-RO
An MP that obtains linear PCM audio data by performing data decompression processing on an audio file (MP3 file) as CD-ROM data output from the M decoder 118
3 decoder 125, a D / A converter 126 for converting the audio data output from the MP3 decoder 125 into an analog audio signal SAr, and a linear PCM audio data as the output data of the CD decoder 117. D / A converter 127 for converting to
And

The CD player 100 outputs the audio signal SAr or D / A output from the D / A converter 126.
A changeover switch 128 for selectively extracting the audio signal SAd output from the A converter 127 is provided. In this case, the audio signal SAr is supplied to the fixed terminal on the a side, and the audio signal SAd is supplied to the fixed terminal on the b side.

The changeover switch 128 is connected to the control microcomputer 10.
When the disk 106 is a CD-ROM disk, it is connected to the a side when the disk 106 is a CD-ROM disk.
Is a CD-DA disk, it is connected to the b side.
The control microcomputer 101 can determine whether the disk 106 is a CD-DA disk or a CD-ROM disk based on the control bits of the subcode Q obtained by the CD decoder 117.

The CD player 100 has a headphone amplifier 129 for amplifying the audio signal output from the changeover switch 128, and an output terminal 130 for outputting the output audio signal SA amplified by the headphone amplifier 129.
And The output terminal 130 is for connecting a headphone 135.

FIG. 2 shows the appearance of the CD player 100 shown in FIG. The player body 150 has a lid 151 on the upper surface. The lid 151 is provided with the above-described operation unit 102 and display unit 103. The operation unit 102 includes operation buttons 102a for performing playback, fast forward, fast rewind, song selection, and the like, a mode changeover switch 102b for switching a playback mode, and a disc 106
In the case of a ROM disk, a reproduction unit switching button 102c for switching between reproduction on a disk basis and reproduction on a folder basis, and a folder selection button 102d for selecting a folder to be reproduced are provided. I have. The mode changeover switch has a normal playback mode,
The mode is switched between a repeat playback mode for performing repetitive playback and a random playback mode for performing random playback.

On the side of the player body 150, there are provided a volume knob 152 for adjusting the volume, an output terminal (headphone terminal) 130, an external power supply terminal 153, and an open switch 154 for opening the lid 151. I have.

The operation of the CD player 100 shown in FIG. 1 will be described. When the disk 106 is mounted, the slide motor 109 is driven by the servo circuit 110 under the control of the control microcomputer 101, and the optical pickup 108 is moved to the lead-in area of the disk 106. Also,
Similarly, the spindle motor 109 is driven by the servo circuit 110. Then, the spindle motor 109
When the number of rotations reaches a predetermined number of revolutions, data is reproduced from the lead-in area of the disk 106. Control microcomputer 101
Determines whether the disc 106 is a CD-DA disc or a CD-ROM disc based on the control bits of the subcode Q obtained by the CD decoder 117 as described above.

The case where the disk 106 is a CD-DA disk will be described. In this case, the control microcomputer 10
1 is a TOC (Table Of Content) obtained from data of the subcode Q obtained by reproducing the lead-in area.
s) Store the information in the RAM 105. The display unit 10
3 includes a disk 1 under the control of the control microcomputer 101.
06 is displayed as a CD-DA disk. Further, the changeover switch 128 is connected to the b side under the control of the control microcomputer 101, so that the audio signal SAd from the D / A converter 127 is taken out.

In this state, when the user instructs the reproduction in the normal reproduction mode by operating the operation unit 102, the reproduction is started from the first music (track) recorded on the disk 106 in order. In this case, the reproduction RF signal SRF reproduced by the optical pickup 108 is subjected to processing such as waveform equalization by the RF signal processing unit 116 and supplied to the CD decoder 117. In this CD decoder 117, R
The output signal of the F signal processing unit 116 is subjected to EFM modulation processing and CIRC error correction processing.

As a result, the audio data of the linear PCM is output as the output data of the CD decoder 117, and the audio data is converted by the D / A converter 127 into an analog audio signal SAd. Then, this audio signal SAd
Is connected to the headphone amplifier 12 via the changeover switch 128.
9, the amplified audio signal SAd is supplied to the output terminal 1
30 is output as the output audio signal SA. By connecting a headphone 135 to the output terminal 130, a sound by the sound signal SAd is output.

In the playback state of the normal playback mode, a fast-forward operation or a fast-reverse operation can be performed with the operation button 102a. In the normal playback mode, a playback start song can be selected with the operation button 102a. In this case, when playback is instructed, the selected songs are played back in order. If the mode is changed to the repeat reproduction mode by the mode changeover switch 102b and then reproduction is instructed, the music recorded on the disk 106 is sequentially and repeatedly reproduced. Further, a mode switch 1
At 02b, a random playback mode is set, and when playback is instructed thereafter, the music recorded on the disk 106 is randomly played. At the time of fast forward, fast rewind, random playback, and the like, the TOC information stored in the RAM 105 is used to control the movement of the optical pickup 108 as described above.

Next, the case where the disk 106 is a CD-ROM disk will be described. In this case, after reproducing the lead-in area when the disc 106 is mounted, the path table arranged in the first part of the data area is reproduced. As a result, the control microcomputer 101 executes the CD-RO
Through the M decoder 118, information on the folder names and recording positions of all the folders stored on the disk 106 can be obtained. As shown in FIG. 3, an information table having information on the folder names and recording positions of all the folders is stored. The information table is created and stored in the RAM 105. FIG. 3 shows a case where the number of folders stored on the disk 106 is N.

Further, with reference to an information table as shown in FIG.
8 are sequentially moved to perform reproduction. The movement of the optical pickup 108 is performed, for example, by referring to the address information of the minute, second, and block recorded in the header of each block of the CD-ROM data. This address information is
The data is extracted from the CD-ROM data in the D-ROM decoder 118 and supplied to the control microcomputer 101.

As described above, the recorded portion of each folder is sequentially reproduced, so that the control microcomputer 101 operates the CD-ROM.
Via the decoder 118, information on the file name and recording position of the audio file included in each folder can be obtained. Then, as shown in FIG. 4, the control microcomputer 101 creates a file information table having information on the file names and recording positions of the included audio files for each folder, and stores the information in the disk 106 as shown in FIG. An information table having file information and recording position information of all included audio files is created. In the information table shown in FIG. 5, all audio files are arranged, for example, in folder order. That is, the audio files of the first folder are arranged first, the audio files of the second folder are arranged next, and the audio files of the remaining folders are arranged sequentially in the same manner.

The file information table for each folder shown in FIG. 4 is used when reproduction is performed in folder units, and the information table shown in FIG. 5 is used when reproduction is performed in disk units. The control microcomputer 101 stores the created information table in the RAM 104. 4, audio files included in the folder A ₁ is the M1, audio files included in the folder A _N indicates the case where the MN number.

When the disk 106 is a CD-ROM disk, the display section 103 displays under the control of the control microcomputer 101 that the disk 106 is a CD-ROM disk. Further, the changeover switch 128 is
Under the control of the control microcomputer 101, D
The audio signal SAr from the / A converter 126 is taken out.

In this state, the reproduction is switched to the disc unit by the operation of the operation unit 102 by the user, and when the reproduction is instructed in the normal reproduction mode, the information table shown in FIG. Each recorded audio file is played back sequentially. In this case, the reproduced RF signal SRF reproduced by the optical pickup 108 is
The RF signal processing unit 116 performs processing such as waveform equalization, and C
It is supplied to the D decoder 117. This CD decoder 11
7, the output signal of the RF signal processing unit 116 is
FM modulation processing and error correction processing by CIRC are performed.

The output data of the CD decoder 117 is
The data is supplied to the CD-ROM decoder 118 and subjected to descrambling, error detection, correction, and the like. And
From the CD-ROM decoder 118, an audio file (MP3 file) as CD-ROM data is obtained. This audio file is supplied to the MP3 decoder 125 and subjected to data expansion processing.

Then, from the MP3 decoder 125,
The linear PCM audio data is output, and the audio data is converted by the D / A converter 126 into an analog audio signal SAr.
Is converted to Then, the audio signal SAr is supplied to the headphone amplifier 129 via the changeover switch 128, and the amplified audio signal SAr is led out to the output terminal 130 as the output audio signal SA. By connecting headphones 135 to the output terminal 130, the audio signal SAr is output.
Is output.

In the playback state of the normal playback mode, the fast forward operation and the fast reverse operation can be performed with the operation button 102a. In this normal playback mode, a playback start audio file can be selected by the operation button 102a. In this case, when playback is instructed, playback is performed in order from the selected audio file. If the mode is changed to the repeat playback mode by the mode changeover switch 102b and then playback is instructed, the audio files recorded on the disk 106 are sequentially and repeatedly played back. Furthermore, when the mode changeover switch 102b is set to the random reproduction mode, and then reproduction is instructed, the audio files recorded on the disk 106 are reproduced at random. At the time of fast forward, fast rewind, random playback, and the like, the movement of the optical pickup 108 is controlled by using the information table shown in FIG.

When the user operates the operation unit 102 to switch to folder-by-folder playback, a predetermined folder is selected by the folder selection button, and playback is instructed in the normal playback mode, FIG. Of the file information tables for each folder, the file information table of the selected folder is referred to, and the audio files included in the selected folder are reproduced in order. Then, in the same manner as described above, the audio signal SAr relating to the reproduced audio file is derived to the output terminal 130.

In the normal playback mode, a fast-forward operation or a fast-reverse operation can be performed in the folder selected by the operation button 102a. In this normal playback mode, a playback start audio file in the folder selected by the operation button 102a can be selected. In this case, when playback is instructed, the selected audio files are played back in order.

When the mode changeover switch 102b is set to the repeat reproduction mode and the reproduction is instructed thereafter, the audio files in the selected folder are sequentially and repeatedly reproduced. Further, when the mode is changed to the random reproduction mode by the mode change switch 102b, and then reproduction is instructed, the audio files in the selected folder are reproduced at random. During fast forward, fast rewind, random playback, etc., the RAM 1
The movement of the optical pickup 108 is controlled using the selected file information table among the file information tables for each folder shown in FIG.

As described above, in the present embodiment, when a CD-ROM disk is mounted as the disk 106, a file information table having information on the file name and recording position of the included audio file is stored for each folder. It is created (see FIG. 4), and the file information table for each folder is stored in the RAM 105. Therefore, by referring to the file information table for each folder, the folder can be easily recognized as a playback unit,
Reproduction of only the audio file included in the selected folder, repeat reproduction or random reproduction of the audio file included in the selected folder can be performed. In addition, since the file information table of each folder is created in advance, there is an advantage that any folder can be immediately selected.

In the above-described embodiment, the file information table for each folder (see FIG. 4) is used to recognize a folder as a playback unit. However, information created to recognize a folder as a playback unit is used. The table is not limited to this.

For example, in addition to the information table (see FIG. 5) having information on the file names and recording positions of all audio files recorded on the disk 106, as shown in FIG. A file number information table having number information may be created, and a folder may be recognized as a playback unit based on these information tables. Here, in order to recognize a folder as a playback unit, it is necessary to know, for each folder, the recording positions of all audio files included therein.

When the recording positions of all the audio files included in the i-th folder Ai are known, the first file number Ns is calculated by the equation (1) with reference to the information table of FIG. The last file number Ne is calculated by the equation. Thus, it is possible to know which file number portion in the information table of FIG. 5 is the file information portion of the i-th folder Ai. Therefore, the recording positions of all the audio files included in the i-th folder Ai can be known using the information tables in FIGS.

[0053]

(Equation 1)

As described above, in the case of recognizing a folder as a reproduction unit by using the information tables of FIGS. 5 and 6, the folder is reproduced by using the file information table of each folder shown in FIG. There is an advantage that the number of information tables to be stored in the RAM 105 can be smaller than that recognized as "."

When the audio file contained in the i-th folder Ai is reproduced, the file information portion of the i-th folder Ai in the information table of FIG. As shown, an information table may be created by extracting the portion. Thus, when the audio file included in the i-th folder Ai is reproduced (including repeat reproduction and random reproduction), only the information table needs to be referred to, and the control operation can be simplified.

Here, a specific example using the information tables of FIGS. 5 and 6 will be described. 4 on disk 106
Folders are stored, and each folder has three,
Assuming that two, four and three audio files are included, the information table corresponding to the information table of FIG. 5 is as shown in FIG. 8, and the file number information corresponding to the file number information table of FIG. The table is as shown in FIG.

Here, for example, when the recording positions of all the audio files included in the _third folder A ₃ are known, FIG.
, The first file number Ns is calculated to be 6 as shown in equation (3), and the last file number Nes is calculated.
Is calculated as 9 as in the equation (4). Thus, it is understood that the file numbers 6 to 9 in the information table in FIG. 8 are the file information portion of the _third folder A3. Then, based on this information, a file information table of the _third folder A3 can be created as shown in FIG.

[0058]

(Equation 2)

For example, as shown in FIG. 11, an information table having information on the file names and storage positions of all audio files recorded on the disk 106 and information on which folder is included, is created. You may make it recognize a folder as a reproduction unit by a table. Here, in order to recognize a folder as a playback unit, it is necessary to know, for each folder, the recording positions of all audio files included therein. When the information table of FIG. 11 is used, the file information of all the audio files included in the predetermined folder can be searched by referring to the information of the folder in which the audio file is included. The recording position of the file can be easily known.

As described above, in the case of recognizing a folder as a reproduction unit using the information table of FIG.
There is an advantage that the number of information tables to be stored in the RAM 105 can be reduced as compared with the above-described file information table for each folder shown in FIG. In this case, the information table shown in FIG. 11 can also be used as a reference table when the information is reproduced in units of discs, so that it is not necessary to have the information table shown in FIG.

When the audio file included in the predetermined folder Ai is reproduced, the file information searched as described above may be extracted and an information table as shown in FIG. 7 may be created. Thus, when the audio file included in the folder Ai is reproduced (including repeat reproduction and random reproduction), only this information table needs to be referred to, and the control operation can be simplified.

In the above embodiment, the CD-
Although a ROM file is described in which an audio file composed of audio data compressed by the MP3 method is recorded, the audio data compression method is not limited to this, and the audio file is composed of uncompressed audio data. It may be something. In the above embodiment, the CD-R
Although the OM disc has a sound file recorded thereon, the present invention can be similarly applied to a case where an image file is recorded.

In the above-described embodiment, random playback is performed within a file included in the selected folder. However, since each folder can be recognized in a playback unit as described above, a folder-by-folder Random playback can also be easily performed.

In the above embodiment, the ISO
CD player 10 for reproducing a CD-ROM disc on which recording is performed in a file structure conforming to the 9660 standard
The present invention is applied to a file reproducing apparatus for reproducing a predetermined file from a recording medium on which the same recording is performed, as a matter of course.

[0065]

According to the present invention, a plurality of folders stored in a recording medium are each recognized as a playback unit, and a playback operation is performed using the recognition result. And random playback)
Becomes possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a CD player as an embodiment.

FIG. 2 is a perspective view showing the appearance of a CD player as an embodiment.

FIG. 3 is a diagram showing an information table of all folders stored on a disc.

FIG. 4 is a diagram showing a file information table of each folder stored on a disk.

FIG. 5 is a diagram showing an information table of all audio files recorded on a disc.

FIG. 6 is a diagram showing a file number information table of each folder stored on a disk.

FIG. 7 is a diagram showing a file information table of an i-th folder Ai extracted from an information table of all audio files.

FIG. 8 is a diagram showing a specific example of an information table of all audio files recorded on a disc.

FIG. 9 is a diagram showing a specific example of a file number information table of each folder.

10 is a diagram showing a specific example of the file information table in the third folder A ₃ created by extracting from the information table for all voice files.

FIG. 11 is a diagram showing an information table of all audio files recorded on a disc.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 CD player 101 control microcomputer 102 operation unit 102 a operation button 102 b mode switching switch 102 c playback unit switching button 102 d folder selection button 103 display unit 105 RAM 106 disk 108 optical pickup 110 servo circuit 115 RF amplifier unit 116 RF signal processing unit 117 CD decoder 118 CD-ROM decoder 125 MP3 decoder 128 Changeover switch 129 Headphone amplifier 130 Output terminal 150 Player body 151 Lid 154 Open switch

Claims (11)

[Claims] 1. A file reproducing apparatus for reproducing a predetermined file from a recording medium storing a plurality of folders each containing one or a plurality of files, wherein each of the plurality of folders stored on the recording medium is reproduced by a reproduction unit. A file reproducing apparatus comprising: a recognizing means for recognizing as a character; 2. The method according to claim 1, wherein the recognizing unit is configured to record at least a file included in each of the folders based on information on the plurality of folders recorded on the recording medium and information on files included in the plurality of folders. 2. The file reproducing apparatus according to claim 1, further comprising means for generating an information table having position information, wherein the plurality of folders are respectively recognized as reproduction units by the information table for each folder. 3. The recognizing means, based on information of the plurality of folders recorded on the recording medium and information of files included in the plurality of folders, at least recording of all files arranged in a folder order. Means for creating a first information table having position information and a second information table having at least information on the number of files included in each folder, wherein the first information table and the second 2. The file reproducing apparatus according to claim 1, wherein the plurality of folders are respectively recognized as reproduction units by an information table. 4. The recognizing means, based on information of the plurality of folders recorded on the recording medium and information of files included in each of the plurality of folders, includes at least a folder included in all files. 2. The file reproducing apparatus according to claim 1, further comprising: means for creating an information table having information on whether the folder is located and information on a recording position, wherein the information table recognizes each of the plurality of folders as a reproduction unit. . 5. The information processing apparatus according to claim 1, further comprising: a folder selecting unit that selects one folder from the plurality of folders, wherein the reproducing unit determines a file included in the one folder selected by the folder selecting unit by the recognition unit. 2. The file reproducing apparatus according to claim 1, wherein the reproduction is performed using the recognition result. 6. The file reproducing apparatus according to claim 5, wherein said reproducing means reproduces files included in one folder sequentially or randomly. 7. The information processing apparatus according to claim 1, further comprising: a folder selecting unit that selects one folder from the plurality of folders, wherein the recognizing unit includes information on the plurality of folders recorded on the recording medium and the plurality of folders. A first information table having at least information on recording positions of all files arranged in the folder order based on information on files to be stored, and a second information table having information on at least the number of files included in each folder. At the same time, based on the first information table and the second information table, a third information table having information on at least a recording position of a file included in the one folder selected by the folder selecting means is created. And the reproducing means uses the third information table created by the recognizing means to generate the one file. File reproducing apparatus according to claim 1, characterized in that for reproducing operation of the file contained in the folder. 8. The apparatus further comprising: a folder selecting means for selecting one folder from the plurality of folders, wherein the recognizing means includes information on the plurality of folders recorded on the recording medium and includes the information in the plurality of folders, respectively. Based on the information of the file to be created, a first information table having at least information on which folder is included in all the files and information on the recording position is created, and based on the first information table, the first information table is created. Creating a second information table having information on at least the recording position of the file included in the one folder selected by the selecting means, the reproducing means rewriting the second information table created by the recognizing means; 2. The file according to claim 1, wherein a file included in the one folder is reproduced by using the file. Raw devices. 9. A method for recognizing a plurality of folders as respective reproduction units in a reproducing apparatus for reproducing a predetermined file from a recording medium storing a plurality of folders each including one or a plurality of files. Based on the information of the plurality of folders recorded in the plurality of folders and the information of the files respectively included in the plurality of folders, an information table having at least information of a recording position of the included file is created for each folder, A folder recognition method characterized by recognizing each of the plurality of folders as a reproduction unit using a table. 10. A method for recognizing a plurality of folders as a unit of reproduction in a reproducing apparatus for reproducing a predetermined file from a recording medium storing a plurality of folders each containing one or a plurality of files, the method comprising: A first information table having information on at least recording positions of all files arranged in the folder order based on the information of the plurality of folders recorded on the medium and the information of the files respectively included in the plurality of folders; A second information table having at least information on the number of files included in each folder, and recognizing the plurality of folders as reproduction units based on the first and second information tables. Recognition method. 11. A method for recognizing a plurality of folders as respective reproduction units in a reproducing apparatus for reproducing a predetermined file from a recording medium storing a plurality of folders each including one or a plurality of files. An information table having information on at least which folder is included in all the files and information on a recording position based on the information on the plurality of folders recorded on the medium and the information on the files respectively included in the plurality of folders. And recognizing the plurality of folders as reproduction units using the information table.