JP2002230906A - Compact disk reproducing device and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact disk reproducing device and a method therefor, capable of individually judging whether data recorded in a disk is uncompressed voice data or CD-ROM data containing compressed voice data, decoding it when it is compressed voice data and reproducing musics in optional order designated by a user. SOLUTION: A reproduction list for reproducing uncompressed voice data is prepared by using TOC information in a step ST4. A second reduction list for reproducing compressed voice data is prepared in a step ST10. A unified reduction list obtained by unifying the first and the second reproduction lists is prepared in a step ST11. In reference to the united reproduction list, musics are reproduced in optional order designated by the user regardless of whether voice data are compressed or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact disc reproducing apparatus and a reproducing method therefor, and more particularly to a compact disk reproducing apparatus and a non-compressed data such as uncompressed audio data or uncompressed image data.
The present invention relates to a compact disc reproducing apparatus that reproduces data recorded on a compact disc (hereinafter abbreviated as CD) in which compressed data such as audio data or compressed image data compressed in various standards is mixed.

[0002]

2. Description of the Related Art Conventionally, CDs generally record audio digital data such as music. However, with the recent progress of multimedia, not only audio digital data, but also image data, text data, computer programs, and the like. Various types of disks on which are recorded in a mixed manner are commercially available.

A CD-I (Compact Disk Intera) on which these multimedia data are recorded.
A compact disc reproducing apparatus for reproducing a disc such as an active disk is disclosed in Japanese Patent Application Laid-Open No. 5-128706.

[0004] The compact disc reproducing apparatus described in the above publication refers to the TOC information to determine whether the disc is a CD-DA (C
ohmpact Disk Digital Audi
o) Disc, CD-I disc, CD-I / CD-D
It is determined whether the disk is one of the A disks, and after EFM demodulation and error correction are performed, processing such as descrambling is performed, and the audio signal or the image data is output to a headphone or a liquid crystal display device, respectively.

In the case of text data or computer programs, descrambling and error correction are performed by a CD-ROM decoder, and these data are stored in a RAM.
And is processed by the CPU.

The compact disc reproducing apparatus described in Japanese Patent Laid-Open No. Hei 10-233,079 reads TOC information when a CD is set, and automatically judges whether the disc is a CD-DA disc or a CD-ROM disc. When music data is prioritized according to the selection information specified by the user, a CD-DA playback program is started and the CD-RO is played.
When priority is given to the data recorded in M, a reproduction program is written into the RAM and the reproduction program is executed.

[0007]

The above-mentioned conventional compact disk reproducing apparatus is composed of uncompressed audio data and CD-ROM data other than the uncompressed audio data, namely, compressed audio data, image data, text data, and computer program. When playing back a CD disk in which data such as data are recorded on the same disk, there is a problem that a normal compact disk playback device can only play back uncompressed audio data.

Recently, CD-ROM discs have M
P3 (MPEG Audio Layer-3), MP
EG2 / AAC (Advanced Audio Cod)
ing), WMA (Windows Media Au)
A compact disc playback apparatus for playing back compressed and recorded audio data according to standards such as Dio) is commercially available. In this case, the only data that can be played back is compressed audio data, and uncompressed audio data is available. Data cannot be reproduced.

In the mixed mode standard among the CD standards developed from a music CD (CD-DA), uncompressed audio data and CD-ROM data including compressed audio data can be recorded on the same disk. However, the current compact disc reproducing apparatus can reproduce only either uncompressed audio data or compressed audio data.

Although it is originally desirable for a user to reproduce both uncompressed audio data and compressed audio data irrespective of whether the audio data is compressed or not, the current compact disc reproducing apparatus does not. There is an inconvenience that both the compressed audio data and the compressed audio data cannot be reproduced.

Therefore, it is an object of the present invention to individually determine whether data recorded on a disc is uncompressed audio data or CD-ROM data containing compressed audio data, and decode compressed audio data if it is compressed audio data. An object of the present invention is to provide a compact disc reproducing apparatus and a reproducing method thereof capable of reproducing music in an arbitrary order specified by a user regardless of whether data is compressed or not.

It is another object of the present invention to generate an integrated play list by integrating a play list for compressed audio data and a play list for uncompressed audio data with reference to TOC information, path table information and the like. A compact disc reproducing apparatus and a reproducing method capable of reproducing music in an arbitrary order specified by a user regardless of whether audio data recorded on a CD is compressed or not by reproducing with reference to a list It is to provide.

[0013]

SUMMARY OF THE INVENTION Therefore, a compact disk reproducing apparatus according to the present invention is a compact disk reproducing apparatus in which audio data including compressed audio data recorded in file units and uncompressed audio data recorded in track units is recorded. A compact disc reproducing apparatus for reproducing a disc, wherein a reproduction number added corresponding to the track number with reference to table of contents information on uncompressed audio data recorded on the compact disc, An uncompressed audio table including a compressed / uncompressed identification code indicating compressed audio data or compressed audio data, and the reproduction added to each file with reference to a data structure relating to the file recorded on the compact disc A compressed voice table including a number and the compressed / uncompressed identification code; An integrated reproduction table in which an audio table and the compressed audio table are integrated, and when any of the reproduction numbers constituting the integrated reproduction list is selected, the compressed / uncompressed identification code corresponding to this number is set. Reference, when it is determined that the audio data is compressed audio data, the compressed audio data is restored and output,
If the audio data is determined to be uncompressed audio data, by outputting the uncompressed audio data without decompression, regardless of whether the audio data recorded on the compact disc is compressed or not. And reproducing the audio data corresponding to any of the reproduction numbers constituting the integrated reproduction list.

A compact disk reproducing apparatus according to the present invention reproduces a compact disk on which image data including compressed image data recorded on a file basis and uncompressed image data recorded on a track basis is recorded. A playback number added corresponding to the track number by referring to table of contents information on uncompressed image data recorded on the compact disc, and wherein the image data is uncompressed image data or compressed image data. An uncompressed image table that includes a compressed / uncompressed identification code indicating the compressed / uncompressed identification code, the reproduction number added to each file with reference to the data structure of the file recorded on the compact disc, A compressed image table including a compression identification code; the uncompressed image table; And an integrated playback table integrating the image table. When an arbitrary playback number constituting the integrated playlist is selected, the compressed / uncompressed identification code corresponding to this number is referred to, and If it is determined that the data is compressed image data, the compressed image data is restored and output. If it is determined that the image data is uncompressed image data, the uncompressed image data is output without being restored. Thereby, regardless of whether the image data recorded on the compact disc is compressed or not, the image data corresponding to any of the reproduction numbers constituting the integrated playlist is reproduced. I have.

[0015] Further, the reproducing method of the compact disk reproducing apparatus according to the present invention reproduces a compact disk in which audio data including compressed audio data recorded in file units and uncompressed audio data recorded in track units is recorded. A playback method of a compact disc playback apparatus, comprising: referring to table of contents information on uncompressed audio data recorded on the compact disc, adding a playback number corresponding to the track number; An uncompressed audio table generating step of generating an uncompressed audio table including a compressed / uncompressed identification code indicating whether the data is audio data or compressed audio data; and referring to a data structure relating to the file recorded on the compact disc, The playback number added to each file and the compression /
A compressed audio table generation step of generating a compressed audio table including an uncompressed identification code; and an integrated reproduction table generation step of generating an integrated reproduction table integrating the uncompressed audio table and the compressed audio table, When any of the playback numbers constituting the integrated playlist is selected, the compressed / uncompressed identification code corresponding to this number is referred to, and if it is determined that the audio data is compressed audio data, The compressed audio data is restored and output, and when it is determined that the audio data is uncompressed audio data, the uncompressed audio data is output without being restored, thereby outputting the audio data recorded on the compact disc. Irrespective of whether or not is compressed, the audio data corresponding to any of the playback numbers constituting the integrated playlist It is characterized in that play.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a compact disk reproducing apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic block diagram of a compact disk reproducing apparatus according to an embodiment of the present invention, in which a CD 1 on which uncompressed audio data and CD-ROM data including compressed audio data are recorded, and a CD 1 is rotationally driven. Motor 2 and C
An optical pickup 3 for reading recorded information of D1, a driver circuit 4 for performing servo control for moving the optical pickup 3 to an arbitrary position, and a driver circuit 5 for controlling the rotation speed of the motor 2 to be constant. Have.

The compact disk reproducing apparatus of the present invention uses the signal S0 read from the optical pickup 3
Servo error signal S1, subcode signal S2, and CD-R
A signal processing circuit 6 that extracts the OM information S3 and outputs these signals to the microcomputer 7 and performs processing such as EFM demodulation, error correction and descrambling on the signal S0 and outputs the processed signals to the switching circuit 14; Output circuit 8
And a signal input from the input / output circuit 8, a servo error signal S1, a subcode signal S2, and CD-ROM information S.
The microcomputer 3 controls the driver circuits 4 and 5 and the switching circuit 14 and outputs information on the reproduction list to the input / output circuit 8.

Further, the compact disk reproducing apparatus of the present invention outputs the uncompressed audio data to the D / A converter 15 according to the control signal S4 from the microcomputer 7, and outputs the CD-ROM data including the compressed audio data to the decoder circuit 13. A switching circuit 14 for switching the signal output from the signal processing circuit 6 to output the compressed audio data, a decoder circuit 13 for restoring the compressed audio data, and a switching circuit 1
4 includes a D / A converter 15 for converting the digital audio data output from 4 into an analog audio signal SA1, and a D / A converter 16 for converting the digital audio data output from the decoder circuit 13 into an analog audio signal SA2. I have.

The microcomputer 7 includes a control circuit 9 for supplying drive signals to the driver circuits 4 and 5 with reference to a signal output from the signal processing circuit 6 and a signal from the input / output circuit 8, and various information processing. CPU for performing
R in which a program of a processing procedure for the R11 is stored.
An OM 10 and a RAM 1 for storing a reproduction position, TOC information, CD-ROM data information, and the like via the CPU 11
2 is provided.

FIG. 2 shows each data area of data recorded on the CD 1 of FIG. 1. Each data area is composed of a lead-in area 17 in which TOC information is recorded, a file structure of CD-ROM data, and a file name. CD-R with recorded information
An OM path table information area 18, a CD-ROM area 19 in which compressed audio data, image data, text data, a computer program, and the like are mixedly recorded; an audio data area 20 in which uncompressed audio data is recorded; And a lead-out area 21. The audio data area 20 in which uncompressed audio data is recorded is divided into audio data tracks 201, 202, and so on.

Next, a data format of a CD used in the compact disk reproducing apparatus of the present invention will be described with reference to FIG.

FIG. 3A corresponds to each data area of the CD shown in FIG. 2, and 30 indicates a sub-Q code recorded in the lead-in area 17 of FIG. Here, a sub-code including a sub-Q code will be described. In a CD, all data of uncompressed audio data and CD-ROM data are all managed by a code called a sub-code. There are sub Q codes and R to W codes. The P code is a code used to find the beginning of a song,
The sub-Q code is a code relating to the TOC, which is the information on the table of contents of the disc, and the absolute address of the data, and the RW code is a code relating to user bits used in line graphics of a CD-G.

The information of the sub-Q code is standardized as shown in FIG. 3B, and the control code CONTROL is used.
35, TNO representing the title number, MIN and SEC representing the start address of the recorded track number as the absolute address of the minute and second, respectively, and the number of the frame which is the minimum unit (1/75 second) of the audio data FRA for
It is composed of ME and the like.

The control code 35 is shown in FIG.
It is composed of 4 bits as shown in (c), and X is 0 or 1
00X0 is a 2-channel audio signal without emphasis, and 01X0 is a CD-RO
The data track on which the M data is recorded is designated as XX0X
Indicates that digital copying is prohibited, and thus the control code 35 indicates the type and attribute of data.

Returning to FIG. 3A and continuing the description, 31
2 is path table information recorded in the CD-ROM path table information area 15 of FIG. 2, and is defined as a logical format for CD-ROM data defined by ISO9660, that is, as a CD-ROM file system.
Information about the data structure in the disk, such as a directory name, a file name, and a data start address for each file.

The track 1 has path table information 3
After 1, the compressed audio data 32-1, 32-2, 32-3
Are recorded, and the audio data track 2 in FIG.
The uncompressed audio data 33-1, 33-2,... Are recorded on the tracks 2, 3,.

The lead-out information 34 recorded in the lead-out area 21 shown in FIG. 2 records information indicating the end of all data recorded on the disc. The data of each track is recorded in a variable length having a different data length depending on the amount of data recorded in each track.

Next, the operation of the servo system of the compact disk reproducing apparatus according to the present invention will be schematically described with reference to FIGS.

The CD 1 on which the data shown in FIG.
As shown in FIG. 1, the optical pickup 3 is driven to rotate by a motor 2 and data recorded on a CD 1 is read by an optical pickup 3.

The signal processing circuit 6 calculates the servo error signal S from the signal S0 read from the optical pickup 3.
1, the subcode signal S2 and the CD-ROM information S3 are extracted and output to the microcomputer 7, and the signal S0 is subjected to processing such as EFM demodulation, error correction and descrambling and output to the switching circuit 14. I do.

The microcomputer 7 processes the servo error signal S1 output from the signal processing circuit 6 and supplies drive signals to the driver circuits 4 and 5.

Normally, when the microcomputer 7 receives the servo error signal S1 indicating that the optical pickup 3 has deviated from the track being reproduced, the microcomputer 7 sends a drive signal to the driver circuits 4 and 5 so as to return to the normal track. The microcomputer 7 outputs the driver circuit 4
When a signal for forcibly moving the optical pickup 3 is given to the optical pickup 5, the optical pickup 3 crosses the track, and the servo error signal becomes large at that time. By detecting this signal, the microcomputer 7 can calculate the number of tracks crossed.

That is, the microcomputer 7 obtains the number of tracks to the destination in order to move the optical pickup 3 from the current reproduction position to the next target position, and forcibly sends a servo signal to the driver circuit 4. Calculate the number of tracks traversed by the servo error signal, cancel the forcibly applied servo signal in the track having the calculated number, and drive signal in the normal reproduction state in the destination track to the driver circuit 4, 5 is output.

Further, the microcomputer 7 controls the TOC (Tabl) included in the subcode signal from the signal processing circuit 6.
e of Contents) table of contents information, that is, information such as a sub-Q code recorded in the lead-in area, a start address of a track on which uncompressed audio data is recorded, a track number, and a file structure in CD-ROM data. In addition to storing the path table information including various kinds of information related to the compressed audio data in the RAM 12 and using the information such as the designated music number designated by the user input through the input / output circuit 8, The optical pickup 3 is moved to an arbitrary position by the method using the servo error signal described above.

More specifically, the microcomputer 7 refers to the TOC information and the path table information included in the CD-ROM data, creates an integrated reproduction table shown in FIG.

The integrated reproduction table shown in FIG. 4 includes a compressed / uncompressed identification code 41 for identifying compressed audio data or uncompressed audio data, and an audio data to be reproduced, which is a recording unit such as a song. Playback number 42 numbered for each
And the reproduction start address 43 expressed in minutes, seconds, and frames
And the file name 44 of the compressed audio data.

Regarding the reproduction number 42, in the case of uncompressed audio data, C
D is given the number 1 for the track with the smallest track number and numbered 2, 3,... In the order of increasing track number. In the case of compressed audio data, a number is assigned to each file. The performance start address 44 indicates a sub-Q code recorded on a CD corresponding to each audio data.

Next, FIG. 4 will be described in detail. The audio data in the first and second lines is a compressed / uncompressed identification code 41.
Is 1, the microcomputer 7 determines that these audio data are uncompressed audio data. The audio data of the reproduction number 1 is from 14 minutes 30 seconds and 20 frames, and the audio data of the reproduction number 2 is 19 minutes 6 A servo signal is output to the driver circuits 4 and 5 so as to be reproduced from 20 frames per second. Thus, the optical pickup 3 moves to the designated position corresponding to the reproduction start address 43.

Since the compressed / uncompressed identification code 41 of the audio data in the third to fifth lines is 0, the microcomputer 7 determines that the audio data is compressed audio data, and the reproduction start address. 43 and the file name are stored in the RAM 12. Then, the file name AA. MP3 audio data is 2 seconds 00
From the frame, the file BBB. The audio data of MP3 starts with a file name of C.M. MP3 audio data is 1/8
A servo signal is output from the microcomputer 7 to the driver circuits 4 and 5 so as to be reproduced from the 00 second frame, respectively, and the optical pickup 3 moves to the designated position corresponding to the reproduction start address 43.

Next, the operation of the signal processing system of the compact disk reproducing apparatus according to the present invention will be briefly described with reference to FIG.

The signal including the audio data on which the error correction and the like have been performed by the signal processing circuit 6 is output to the switching circuit 14, and if the microcomputer 7 determines that the data is uncompressed audio data, the control signal S4 Thus, the switching circuit 14 outputs the output signal from the signal processing circuit 6 to the D / A converter 15, and the D / A converter 15 converts the digital audio data into an analog audio signal and outputs it as an analog audio signal SA1.

On the other hand, when the microcomputer 7 determines that the data includes compressed audio data, the switching circuit 14 outputs the output signal from the signal processing circuit 6 to the decoder circuit 13 by the control signal S4, 1
In step 3, the output signal from the signal processing circuit 6 is restored, and the restored signal is converted from digital audio data to an analog audio signal by the D / A converter 16 and output as an analog audio signal SA2.

Next, the reproducing method of the compact disk reproducing apparatus of the present invention will be described in detail with reference to FIGS. 1 to 4 and a flowchart showing the reproducing method of the compact disk reproducing apparatus of the present invention shown in FIG. These series of processes are performed by a program stored in the ROM 10 of the microcomputer 7.

First, at step ST1, when the CD 1 recorded in the data format shown in FIG. 3 is set in the compact disc reproducing apparatus shown in FIG. 1, the lead-in area shown in FIG. The sub Q code 30 of the area, that is, the TOC information is read. Subsequently, in step ST2, the T read in step ST1 is read.
The control code shown in FIG. 3C for each track is extracted from the OC information.

Next, in step ST3, it is determined with reference to the control code whether or not uncompressed audio data exists in the data recorded on the disk. That is, if there is a control code of 00X0, 00X1, it is determined that uncompressed audio data exists.

If it is determined in step ST3 that there is no uncompressed audio data, it is determined in step ST6 whether CD-ROM data exists.
When it is determined that there is no D-ROM data, it is determined that there is no audio data that can be reproduced, and the process ends.

If it is determined in step ST3 that there is uncompressed audio data, the TOC information is referred to in step ST4, and the uncompressed audio data portion such as the first and second lines in FIG. Generate a playlist.

Next, in step ST5, the CD-RO
It is determined whether or not M data exists, and if it is determined that no CD-ROM data exists, the process proceeds to step ST1.
In 2, the user selects a recording unit, such as a playback tune, from the playback list via the input / output circuit of FIG.

In step ST3, it is determined that there is no uncompressed audio data, and in step ST6, the CD-R
If it is determined that OM data exists,
If it is determined in T5 that the CD-ROM data exists, the file structure of the CD-ROM data is read in step ST7. The file structure read here is the content of the path table information 31 in FIG. 3, and more specifically, each compressed audio data 3
2-1, 32-2, 32-3,...

Next, in step ST8, step S
Referring to the file structure read in T7, it is determined from the file extension or the like whether or not compressed audio data is recorded. If it is determined that both the uncompressed audio data and the compressed audio data have not been recorded, the process ends. If it is determined that the compressed audio data has been recorded, in step ST9, the path table shown in FIG. With reference to the information 31, each file of the audio data is extracted.

Next, in step ST10, a reproduction list of the compressed audio data portion as shown in FIG. 4 is created from the file information of the compressed audio data extracted in step ST9.

In the example shown in FIG. 4, AA. M
P3, BBB. MP3, C.I. MP3 files are extracted, and DD. XX.EXE which is an EXE file or a document file DOC files and the like are not extracted.
Then, in step ST10, a reproduction list in the uncompressed audio data format for these files shown in the third to fifth lines in FIG. 4 is created. At this time, the compressed / uncompressed identification code 41
Is set to 0, which indicates compressed audio data. As for the reproduction number 42, an arbitrary number is set in order for each recorded compressed audio data file.

Subsequently, in step ST11, the reproduction list of the compressed audio data generated in step ST10 and the reproduction list of the uncompressed audio data generated in step ST4 are integrated, and the compressed audio data shown in FIG. An integrated playlist for all audio data including compressed audio data is generated. At this time, the reproduction number 42 in the reproduction list is set so that the uncompressed audio data and the compressed audio data do not have the same number. If there is no playlist of uncompressed audio data, the playlist becomes a playlist of only compressed audio data.

Next, in step ST8, when it is determined that uncompressed audio data exists and compressed audio data does not exist, in step ST12, the audio unit such as a music piece to be reproduced from the integrated reproduction list by the user is determined. Selected.

That is, the user refers to the integrated reproduction list stored in the RAM 12 via the input / output circuit 8 of FIG. 1 and is conscious of whether or not the music data to be reproduced from the integrated reproduction list is compressed. Can be selected arbitrarily. At this time, a method for the user to select a desired song from the integrated play list is determined by the input / output circuit 8 in FIG.
Up the track in the same way as a general CD player /
This is performed by, for example, a configuration in which the channel is down, or a configuration in which the channel is directly selected with a 10-key.

Next, in step ST13, the reproduction number 42 shown in FIG. 4 corresponding to the music selected in step ST12 is extracted from the music selected in step ST12, and the reproduction starting from the minute, second and frame on the same line as this reproduction number 42 is started. The optical pickup 3 is moved to a position on the disk corresponding to the address 43.

As a method of moving the optical pickup 3, a difference between a target address and a currently reproduced address is calculated, and the number of tracks traversed by the optical pickup 3 until reaching the target address is calculated. A signal is forcibly given to the driver circuits 4 and 5 by the microcomputer 7 to move the optical pickup 3.

If the optical pickup 3 crosses the track when forcibly moving, the servo error signal becomes large,
By detecting the signal, the number of tracks crossed can be calculated. That is, the microcomputer 7 calculates the number of traversed tracks, cancels the signal forcibly given in the state where the number of tracks has been reached, and returns to the normal reproduction state. By doing so, the optical pickup can be quickly moved from the address currently being reproduced to the target address, and the arbitrarily designated music can be reproduced without waiting time.

Next, in step ST14, it is determined whether the music to be reproduced is compressed audio data or uncompressed audio data by referring to the compressed / uncompressed identification code 41 in FIG. In step ST15, the switching circuit 14 changes the output signal from the signal processing circuit 6 to D by the control signal S4 from the microcomputer 7.
The digital audio data is converted to an analog audio signal by the D / A converter 15 and output as an analog audio signal SA1.

On the other hand, if it is determined in step ST14 that the music to be reproduced is compressed audio data, then in step ST16, the switching circuit 1 is turned on by the control signal S4.
Reference numeral 4 denotes a decoder circuit 13 which outputs an output signal from the signal processing circuit 6.
And the decoder circuit 13 restores the output signal from the signal processing circuit 6 and outputs the restored signal to the D / A converter 16.
Converts the digital audio data into an analog audio signal and outputs it as an analog audio signal SA2.

Such processing is performed in step ST12 to step ST15 or step ST12 to step S
By repeating at T16, the songs selected by the user can be sequentially reproduced. If the disk to be reproduced has changed, the process starts from step ST1.

In the above description, a single session disc in which a lead-in area 17, a signal data area such as audio data or image data, and a lead-out area 21 exist as one set of recording areas on one CD has been described. However, the compact disk reproducing apparatus and the reproducing method according to the present invention can be applied to a multi-session disk in which data can be additionally recorded and a lead-in area, a signal data area and a lead-out area exist as a plurality of recording areas. is there.

In this case, the same operation can be performed by performing the processing of the flowchart shown in FIG. 5 for each session and generating an integrated play list common to all sessions.

In the above, the recording unit is “song”
Has been described as an example, but any recording unit such as conversation, SL voice, etc. may be used.

In FIG. 1, two D / A converters 15,
16 has been described, but the switching circuit 1
4 and the output of the decoder circuit, and the common output may be input to one D / A converter.

Instead of uncompressed audio data and uncompressed audio data, uncompressed data and compressed data obtained by compressing data of the same type as this data, such as uncompressed image data and compressed image data, respectively, The present invention can be similarly applied.

[0068]

As described above, the compact disk reproducing apparatus and the reproducing method according to the present invention provide an optical pickup for reproducing a CD in which uncompressed audio data and compressed audio data are recorded on the same disk. By generating an integrated play list from the signal detected in step (1) and selecting a song to be played from the integrated play list, a desired song can be arbitrarily played regardless of whether or not the audio data is compressed.

Also, by using the integrated reproduction list according to the present invention, special reproduction such as memory performance, random performance, and repeat performance can be performed on a CD on which uncompressed audio data and compressed audio data are recorded on the same disk. It can be easily realized and is convenient for the user.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a compact disc reproducing apparatus of the present invention.

FIG. 2 is an explanatory diagram showing each data area of a CD used in the compact disk reproducing apparatus of the present invention.

FIG. 3 is an explanatory diagram for explaining a data format of a CD used in the compact disk reproducing apparatus of the present invention.

FIG. 4 is an example of an integrated playlist according to the present invention.

FIG. 5 is a flowchart for explaining a reproducing method of the compact disc reproducing apparatus of the present invention.

[Explanation of symbols]

 Reference Signs List 1 CD 2 motor 3 optical pickup 3 4, 5 driver circuit 6 signal processing circuit 7 microcomputer 8 input / output circuit 9 control circuit 10 ROM 11 CPU 12 RAM 13 decoder circuit 14 switching circuit 15, 16 D / A converter 17 lead-in area 18 CD-ROM path table information area 19 CD-ROM area 20 audio data area 21 lead-out area 201, 202 audio data track

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/93 H04N 5/93 GF Term (Reference) 5C052 AA04 AB03 AB04 AB05 AC08 CC06 CC11 DD04 DD06 5C053 FA23 GA11 GB06 GB11 GB21 HA30 JA02 JA12 JA21 KA24 KA25 LA06 5D044 AB05 AB08 BC03 CC06 DE23 DE37 DE43 DE54 FG10 FG18 GK08 GK12 5D077 AA26 AA28 BA01 BA04 CA02 CA11 DC03 DC12 EA03 EA34 FA06 FA08 5D110 AA15 DBA DA11

Claims (7)

[Claims] 1. A compact disc reproducing apparatus for reproducing a compact disc on which audio data including compressed audio data recorded on a file basis and uncompressed audio data recorded on a track basis is recorded. The playback number added corresponding to the track number with reference to the table of contents information on the uncompressed audio data recorded in the file, and a compression / uncompression identification indicating whether the audio data is uncompressed audio data or compressed audio data Uncompressed audio table including a code, a reproduction number added to each file with reference to a data structure related to the file recorded on the compact disc, and a compressed / uncompressed identification code. A table, an integrated playback table integrating the uncompressed audio table and the compressed audio table, When any of the playback numbers constituting the integrated playlist is selected, it is determined that the audio data is compressed audio data by referring to the compressed / uncompressed identification code corresponding to this number. In this case, the compressed audio data is restored and output, and when it is determined that the audio data is uncompressed audio data, the uncompressed audio data is output without being restored, so that the audio data is recorded on the compact disc. Irrespective of whether the audio data is compressed or not, reproducing the audio data corresponding to any of the reproduction numbers constituting the integrated reproduction list. 2. The compact disc reproducing apparatus according to claim 1, wherein the table of contents information uses a sub-Q code recorded in a lead-in area of the compact disc. 3. An optical pickup for reading out the audio data recorded on the compact disk, a driver circuit for controlling the optical pickup to move to an arbitrary position on the compact disk, and Referring to the read servo error signal, the uncompressed audio table is formed, and the first reproduction start address added corresponding to each track or the compressed audio table is formed and corresponding to each file. Control means for outputting a control signal to the driver circuit so as to move the optical pickup to a position on the compact disc corresponding to the second reproduction start address added in the above manner. The compact disc reproducing apparatus according to claim 1, wherein 4. When the audio data is the compressed audio data, the compressed audio data is output to a decoder circuit for restoring the compressed audio data. When the audio data is the uncompressed audio data, the uncompressed audio data is output. 2. The compact disk reproducing apparatus according to claim 1, further comprising a switching circuit for outputting the data without restoring the data. 5. A reproducing method of a compact disk reproducing apparatus for reproducing a compact disk on which audio data including compressed audio data recorded in file units and uncompressed audio data recorded in track units is recorded, Referring to the table of contents information on the uncompressed audio data recorded on the compact disc, a playback number added corresponding to the track number, and a compression / indicator indicating whether the audio data is uncompressed audio data or compressed audio data. An uncompressed audio table generating step of generating an uncompressed audio table including an uncompressed identification code, and the reproduction number added to each file by referring to a data structure of the file recorded on the compact disc, Compressed voice table generator for generating a compressed voice table including the compressed / uncompressed identification code And an integrated reproduction table generating step of generating an integrated reproduction table by integrating the uncompressed audio table and the compressed audio table, and when any of the reproduction numbers constituting the integrated reproduction list is selected, Referring to the compressed / uncompressed identification code corresponding to this number, if it is determined that the audio data is compressed audio data, the compressed audio data is restored and output, and the audio data is uncompressed audio data. If the audio data recorded on the compact disc is compressed, the integrated play list is formed by outputting the uncompressed audio data without decompressing it. A reproducing method for a compact disc reproducing apparatus, wherein the audio data corresponding to an arbitrary reproduction number is reproduced. 6. An optical pickup for reading the audio data recorded on the compact disc, and a driver circuit for controlling the optical pickup to move to an arbitrary position on the compact disc; With reference to the servo error signal read from the pickup, the uncompressed audio table is formed, and the first reproduction start address added corresponding to each track or the compressed audio table is formed, and Outputting a control signal to the driver circuit so as to move the optical pickup to a position on the compact disk corresponding to each of the second reproduction start addresses correspondingly added. 6. A reproducing method for a compact disk reproducing apparatus according to claim 5, wherein: 7. A compact disc reproducing apparatus for reproducing a compact disc on which image data including compressed image data recorded on a file basis and uncompressed image data recorded on a track basis is recorded. The reproduction number added corresponding to the track number with reference to the table of contents information on the uncompressed image data recorded in the file, and a compressed / uncompressed identification indicating whether the image data is uncompressed image data or compressed image data. A compressed image table including an uncompressed image table including a code, a reproduction number added to each file with reference to a data structure regarding the file recorded on the compact disc, and the compressed / uncompressed identification code. A table, an integrated reproduction table obtained by integrating the uncompressed image table and the compressed image table, When any of the playback numbers constituting the integrated playlist is selected, it is determined that the image data is compressed image data by referring to the compressed / uncompressed identification code corresponding to this number. If the compressed image data is decompressed and output, and if the image data is determined to be uncompressed image data, the uncompressed image data is output without decompression and recorded on the compact disc. Irrespective of whether the image data is compressed or not, reproducing the image data corresponding to any of the reproduction numbers constituting the integrated reproduction list.