JP2000011547A - Record medium, recording method and device for recording voice program in recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a record medium, a recording method and device of a voice program on a track of the record medium, in which a CD drive is not required to change always between a stagnation state and a progress state at the time of reading out a voice program from the recording medium. SOLUTION: A recording medium comprises a track provided with at least one block, each block is provided with plural compressed voice programs being inserted alternately, made into some continuous sub-blocks, each compressed voice program is divided into some parts, some continuous voice sectors being same numbers as this sub-block are formed, this each voice sector is arranged in each sub-block, the j-th voice sector of each compressed voice program is arranged in the j-th sub-block, these input voice programs are compressed to plural compressed voice programs, after that they are divided into compressed voice program segments of the same number of pieces, compressed voice program segments are alternately inserted and a block is formed in a style in which the j-th compressed voice program is concentrated to the j-th continuous groop of a normal order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium for recording a compressed audio program, and more particularly to a recording medium and a recording method and apparatus for recording an audio program.

[0002]

2. Description of the Related Art A digital audio CD which appeared in the 1980's is an excellent medium for digital audio data recorded in high fidelity. The advantage of expressing audio and video signals using digital technology is well known in the prior art. Even if the quality of digital recording of audio and video signals is improved, the cost of manufacturing CD media has been decreasing in recent years, and the development of digital recording of audio and video signals has been inevitably promoted. .

[0003] In recent years, great progress has been made in the area of video compression, and it has become possible to record video signals on CD media.
Video CD similar in structure to digital audio CD
Employs MPEG compressed video and audio techniques to record a 74 minute long program on a CD medium. Bit rate of compressed video is about 1.15 Mbits / s
ec, the bit rate of compressed audio is about 224Kbit
s / sec, and these bit rates are selected to be approximately 1.5 Mbits / sec in accordance with the fixed linear speed rate of the CD drive. The video CD can also record some playback control data that provides interactive operation when the program is played.

FIG. 10 shows the structure of data of a program in a video CD, which includes audio and video information. As shown in the figure, the video information is divided into some parts, and then a video of the same length is obtained. Formatted to sector (V). Similarly, the audio information is also divided into some parts and then formatted into the audio sector (A).
These video and audio sectors (V, A) are alternately inserted at a ratio of about 5: 1 so as to ensure transmission during reading during playback. This ratio means that if there is no overflow or underflow while the video CD is being read,
It is not always necessary to limit to this value. These alternately inserted video and audio sectors (V, A) form a program, which can be logically called a file or track in video CD terminology. The program may be a music video, a karaoke song, a movie, or an audio / video data clip, and there may be multiple files or tracks on one video CD.

A video CD may be used only for storing a compressed audio program, or a conventional digital audio CD may be used.
In comparison with, a CD medium of the same quality can store more audio data bits, almost six times that of a primitive digital audio CD. However,
The compressed audio bit rate is much lower than the fixed linear rate of a CD drive, and only compressed audio programs
The problem appears when recorded in FIG. 11 shows the alternate insertion of the supplementary sector (S) and the audio sector (A) for solving the above-mentioned problem. The same total bit rate as the fixed linear rate of the CD drive can be maintained. Although the problem of the speed rate can be solved, the recording capacity of the CD medium cannot be fully utilized. FIG. 12 shows another type in which all of the audio sectors (A) are integrated and can maintain a high recording density. However, since the CD drive is frequently switched between a stopped state and an advanced state, the CD is changed. The drive is easily severely deteriorated.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the conventional recording medium and the recording method and apparatus thereof, the present invention provides a method in which a CD drive is frequently stopped and advanced when reading an audio program from a recording medium. It is an object of the present invention to provide a recording medium and a recording method and apparatus for recording an audio program on a recording medium, which do not need to be switched between the recording media.

[0007]

In order to achieve the above object, a recording medium of the present invention includes a track having at least one block, such as a CD, and each block includes a plurality of alternating tracks. Each compressed audio program is divided into a number of contiguous sub-blocks with the inserted compressed audio program, and each compressed audio program is divided into portions to form the same number of contiguous audio sectors as the sub-blocks. An audio sector is arranged in each sub-block, a j-th audio sector of each compressed audio program is arranged in a j-th sub-block, and each of the compressed audio programs is assigned a program number in an ascending order, The audio sectors in each sub-block are arranged in the format of the compressed audio program in an ascending order to which they belong, and each audio sector is The include ID field and data field for 貯存 the SYNC field and each audio sector specific ID code to 貯存, further configured to include error management code field for 貯存 error management code.

The recording method for recording an audio program on a recording medium according to the present invention comprises the steps of: compressing an input audio program to obtain a plurality of compressed audio programs; Alternately compressing the compressed audio program segments of each of the compressed audio programs in a manner of dividing the compressed audio program segments into j steps of the compressed audio program, and concentrating the jth compressed audio programs in the contiguous group of the jth ascending sequence. Inserting a SYNC word and an ID code specific to each compressed audio program segment into each compressed audio program segment to form a corresponding audio sector with the compressed audio program segment. And recording the audio sector on a track of a recording medium. And a step of recording,
Each of the compressed audio program segments is configured to include an error management code including at least one error detection code and one error correction code.

A recording apparatus for recording an audio program on a recording medium according to the present invention comprises: an audio compressor for compressing an input audio program to obtain a plurality of compressed audio programs;
A separating unit connected to the audio compressor for dividing each compressed audio program into the same number of continuous compressed audio program segments; and a j-th compressed audio program of the compressed audio program connected to the separating unit. An alternate inserter for alternately inserting the compressed audio program segments to form blocks in a manner concentrated on the j-th consecutive group of the ascending sequence, wherein each of the compressed audio programs allocates the program numbers of the ascending sequence. Then, the compressed audio program segments in each group are arranged in an ascending sequence of the compressed audio programs to which the compressed audio program segments belong by the interleaving device, and the separating means is connected to the audio compressor to generate the compressed audio program from the audio compressor. A storage device for storing a program, and a compressed audio program in the storage device connected to the storage device for continuously compressing audio programs. A SYNC generator that is used to generate a SYNC word, wherein the recording device further comprises a SYNC generator that divides the ram segment into ram segments and stores the continuous compressed audio program segment in the storage device. And an ID generator that generates an ID code unique to each compressed audio program segment output by the SYNC generator to output a compressed audio program segment output from each of the alternate inserters under the control of the stage controller. SYNC word and corresponding ID coming from the ID generator
A sector format multiplexer for adding a code to form an audio sector corresponding to the compressed audio program segment; and a recording mechanism suitable for recording the audio sector on a recording medium, the interleaving device and the sector format multiplexer. , Respectively, to generate error management codes coming from the compressed audio program segments of the alternate inserter, respectively, and the sector format multiplexer respectively outputs corresponding error management codes coming from the error management code generator. It is configured to be added to the compressed audio program segment output from the alternate inserter.

The operation of the present invention is as described in the detailed description in the following embodiments of the invention.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on embodiments, but the present invention is not limited to these examples. A relatively preferred embodiment of the recording medium of the present invention is
As shown in FIGS. 1 and 2, each track T has some blocks B, and each block B also has some tracks compressed by the MPEG audio compression system. Includes different compressed audio programs. In this embodiment, each block B has six compressed audio programs, which are the same as those of a practical video CD encoding system. Each compressed audio program is divided to form some k continuous audio sectors {AS (i, j), where i = 0-5, j = 0-k-1}, and the audio sectors AS of those audio programs (I, j) are inserted alternately to give a fixed linear rate of the CD drive of the playback device, ie, 1.
5Mbits / sec is almost 224Kbits / sec
And the compressed audio bit rate can be kept consistent.
The audio sectors AS (i, j) are arranged in k consecutive sub-blocks, and the j-th audio sector AS (i, j) of each compressed audio program is arranged in the j-th sub-block. . In other words, the first audio sector AS (i, 0) of the compressed audio program is in the first sub-block,
The second audio sector AS (i, 1) is in the second sub-block, the third audio sector AS (i, j) is in the third sub-block, and so on. The compressed audio programs are each assigned a program number in an ascending order, and in each sub-block, the audio sectors AS (i, j) are arranged according to the arrangement method of the compressed audio program in the ascending order to which they belong. That is, the audio sector AS (1, j) of the second compressed audio program is
After the audio sector AS (0, j) of the third compressed audio program, the audio sector A of the third compressed audio program
S (2, j) follows the audio sector AS (1, j) of the second compressed audio program, and so on.

As shown in FIG. 3, each audio sector AS
(I, j) are SYNC column 10, ID column 11, and data column 1.
2 and an error management code column 13 and a SYNC column 1
0, a data column 12 and an error management code column 13 are the SYNC column 1 as defined in the standard video CD sector.
0 contains the SYNC word, and the error management code column 13
Contains the error management code, and the error management code is standard C
An error detection code and an error correction code are provided in the same manner as in the D-ROM and the video CD, and the ID column 11 is provided with an ID code specific to each audio sector AS (i, j). The ID code is an audio sector AS (i,
j), and when the compressed audio program is read from the recording medium, the audio sector AS
Control is performed so that (i, j) can be extracted accurately and continuously.

Next, referring to FIG. 4 in conjunction with FIGS. 1 to 3, as shown, the ID column 11 includes a track number TN,
Including the block number BN, program number PN, sector number SN and contact information CI, track number TN
Indicates the track T of the recording medium to which the audio sector AS (i, j) belongs, and the block number BN indicates the audio sector A.
The block B on the track T to which S (i, j) belongs is displayed, for example, m or m + 1 shown in FIG. The program number PN indicates a compressed audio program on the block B to which the audio sector AS (i, j) belongs. For example, i = 0 to 5 shown in FIG.
Is the sector number of the audio sector AS (i, j) in the compressed audio program to which the audio sector AS (i, j) belongs,
For example, j = 0 to k-1 shown in FIG. The contact information CI includes a flag used for continuously playing back the compressed audio program when the recording medium is read. The flags include a program end (EOP) flag, a block end (EOB) flag, and a track end (EOT). ) Flag and a disk end (EOD) flag. A relatively preferred embodiment of the present invention is the last audio sector of each compressed audio program, i.e., AS (i, k-
1) with an EOP, the last audio sector of each block B, that is, AS (5, k-1) with an EOB, and the last audio sector AS (5,
k-1) further includes EOT, and the last audio sector AS in the last block B in the last track T of the recording medium.
(5, k-1) has EOD.

In a relatively preferred embodiment of the invention,
The relatively short compressed audio program has the supplementary bit set supplemented, and has the same length as the relatively long compressed audio program. Thus, the lengths of the audio sectors AS (i, j) are all equal in the recording medium of the present embodiment. FIG.
Shows C in a relatively preferred embodiment of the present invention.
A recording method for recording an audio program on a track of a recording medium such as D, including the following steps. 1.
First, as shown in FIG. 6A, six input audio programs having different lengths are compressed by a method such as the MPEG audio compression method, and the six compressed audio programs P (0) are compressed.
To P (5). Compressed audio program P (0) -P
In (5), the program numbers are arranged in ascending order, and form a block to be recorded on one track together. 2. Next, as shown in FIG. 6B, each compressed audio program P (0) to P (5) is divided into the same number k of continuous compressed audio program segments, and these compressed audio program segments P (0) are divided. , 0) to P (5, k−
In 1), it is best to have the same length, and all the divided compressed audio programs P (0) to P (5) are made to have the same length. The number k is determined from the length of the longest compressed audio program, and assuming in FIG. 6A that the compressed audio program P (2) has the longest length and other relatively short compressed audio programs, Program P (0), P (1), P
(3), P (4), and P (5) are compressed audio programs P (0) to P (0) to
P (5) has the same length. 3. As shown in FIG. 7 (A), the compressed audio program segments are inserted alternately in such a manner that the first stage of the compressed audio program, the second stage of the compressed audio program, etc. are integrated together, and k continuous ascending sequences are arranged. A group is formed, and within each group, the compressed audio program segments are arranged according to the format of the compressed audio program in the ascending order to which they belong. 4. FIG.
As shown in (B), each compressed audio program segment is provided with a SYNC word, an ID code unique to each compressed audio program segment (see FIG. 4), and an error management code, and the audio corresponding to the compressed audio program segment is added. Form a sector AS (i, j). The error management code includes at least one error correction code and an error detection code, and the format of the ID code has already been described with reference to FIG. 5. Finally, the audio sector AS (i, j) is recorded on the track of the recording medium in a conventional manner by a conventional recording mechanism.

Before recording the audio sector AS (i, j) on the recording medium, if possible, the audio sector AS (i, j) is scrambled by a special scrambling calculation method, and noise margin is read when reading the audio sector AS (i, j) from the recording medium. Increase the degree to make it easier to save. FIG. 8 shows a recording apparatus 2 for recording an audio program on a track of a recording medium 4 such as a CD according to a relatively preferred embodiment of the present invention. Separating means comprising a controller 22, an alternate insertion unit 23, an error management code generator 2
4, including a SYNC generator 25, an ID generator 26, a sector format multiplexer 27, and a recording mechanism 28.

The audio compressor 20 receives the input audio program and compresses it using a compression operation method suitable for, for example, the MPEG audio compression system. The audio compressor 20 is connected to a storage device 21 such as a memory unit. Then, the compressed voice program is stored in the storage device 21. In the present embodiment, six different audio programs (FIG. 6 (A)) are stored in the storage device 21 so as to be recorded on the track of the recording medium 4.

A stage controller 22 is coupled to the storage device 21 to divide the compressed audio programs into the same number of continuous compressed audio program segments (see FIG. 10), the stage controller 22 being preferably relatively short. The compressed audio program is supplemented with the supplementary bit set to form each compressed audio program segment of the same length, and the compressed audio program segments are stored in the storage device 21.

The alternate inserter 23 is connected to the storage device 21 and the stage controller 22, and reads and outputs compressed audio program segments in the storage device 21 in a predetermined format under the control of the stage controller 22. , In such a way as to produce an interleaved compressed audio program segment in the manner of a serial bit stream output. The alternate inserter 23 first reads the first stage of the compressed audio program provided with the program numbers in the ascending order, then reads the second stage of the compressed audio program, and then reads the third stage, and so on. Read in the same manner.

The error management code generator 24 is connected to the alternate inserter 23, and uses the conventional error management arithmetic method to convert the error management code of the compressed audio program segment output from each alternate inserter 23 in a conventional manner. And the error management code has at least one error detection code (ED
C) and an error correction code (ECC). SYNC
The generator 25 generates a SYNC word, and the ID generator 26 connected to the stage controller 22 receives the separation information of each compressed audio program segment from the stage controller 22, and generates a unique response for each compressed audio program segment. ID code to be generated. Since the details of the ID code have already been described in the previous FIG. 4, the description is omitted here.

The sector format multiplexer 27 is connected to the division controller 22, the alternate inserter 23, the error management code generator 24, the SYNC generator 25, and the ID generator 26, as shown in FIG. , Under the control of the stage controller 22, the sector format multiplexer 27 adds the SYNC word, I, coming from the SYNC generator 25 to the compressed audio program segment coming from each alternate inserter 23.
The corresponding ID code coming from the D generator 26 and the corresponding error management code coming from the error management code generator 24 are added to form the compressed audio program segment and the corresponding audio sector AS (i, j), and their composite Recorded audio sector AS (i, j) is track (T) of recording medium 4
A block (B) to be recorded thereon is formed (see FIG. 2).

A recording mechanism 28 is coupled to the sector format multiplexer 27 to provide a composite audio sector A in a conventional format.
It is suitable for recording S (i, j) on the recording medium 4. A scrambler (not shown) is connected to the sector format multiplexer 2
7 and the recording mechanism 28, and the composite audio sectors AS (i, j) can be scrambled before being recorded on the track of the recording medium 4.

FIG. 9 shows a reproducing apparatus 3 used for reading a compressed audio program from a track of the recording medium 4 according to the present invention. The reproducing apparatus 3 reads the recording medium 4 under the control of the extraction controller 31. The CD drive 30 outputs an audio sector recorded on the recording medium 4 to a SYNC detector 32, an error management processor 33, and an ID extractor.

The SYNC detector 32 detects the SY in the voice sector.
When the NC word is detected, the error management processor 33 and the ID
Activate extractor 34 to enable requisition of the corresponding section of the audio sector when a SYNC word is detected. SY
When activated by the NC detector 32, the error management processor 33
Rejects the error management code column and data column of the voice sector, executes error management operations such as error detection and error calibration on the data column based on the error management code in the error management code column, and performs error management. The output of the processor 33 is a primitive program segment of the compressed audio program.

When the SYNC detector 32 is activated, I
The D extractor 34 requisitions the ID column of the voice sector and sends out the extracted ID code to the extraction controller 31. The extraction controller 31 receives the ID code from the ID extractor 34,
A reproduction command is received from the conventional reproduction sequencer 38, and it is determined whether any audio sector on the recording medium is read and reproduced. The extraction controller 31 outputs an enable signal, and controls the CD drive 30 to read the audio sector based on the reproduction command and the ID code of the previous audio sector.

When the sector data extractor 35 receives the output of the error management processor 33 and receives the enable signal from the extraction controller 33, the sector data is extracted from the error management processor 33, and the sector data is extracted. 35 stores the extracted sector data in the FIFO memory device 36. The sector data extracted by the FIFO memory device 36 is collected and an audio decompressor 37 (Audio Decom
pressor) to reduce pressure and restore a primitive audio program. The audio decompressor 37 is based on the compression operation method used in the audio compressor 20 of FIG.
The data stored in the memory device 36 is decompressed.

If the audio sector recorded on the recording medium 4 is scrambled, a corresponding descrambler (not shown) is required at the output side of the CD drive 30, and before the audio sector is decoded. The descramble reduction operation is performed.

[0027]

According to the present invention constructed as described above, the high-density compressed audio program is converted to the fixed linear rate of the CD drive 30, that is, 1.5 Mbits / sec from the alternate insertion arrangement of the audio sectors in the recording medium. And about 224Kb
It is possible to record on a track of the recording medium 4 under the condition that the compressed audio bit rates of bits / sec substantially coincide with each other, so that when the compressed audio program is read from the recording medium, the CD drive always stagnates. There is no need to switch between the forward states, and the deterioration of the CD drive can be reduced to a minimum.

[Brief description of the drawings]

FIG. 1 is a track display diagram of a recording medium according to a relatively preferred embodiment of the present invention.

FIG. 2 is a block diagram of the track shown in FIG. 1;

FIG. 3 is an audio sector display diagram of the block of FIG. 2;

FIG. 4 is a diagram showing a voice sector ID column shown in FIG. 3;

FIG. 5 is a flowchart of a recording method according to the embodiment.

FIG. 6A is a view showing a compressed voice program after a voice compression operation of the recording method of the above embodiment, and FIG. 6B is a view showing a divided compressed voice program after the division operation of the recording method of the above embodiment.

FIG. 7A is a diagram showing an alternately inserted voice program segment after the alternately inserting operation of the recording method of the embodiment, and FIG.
FIG. 8 is a composite audio sector display diagram after the composite operation of the recording method of the embodiment.

FIG. 8 is an electric circuit block diagram of a recording apparatus for recording an audio program on a track of a recording medium according to the embodiment.

FIG. 9 is an electric circuit block diagram of a reproducing apparatus for reading a compressed audio program from a track of a recording medium according to the present invention.

FIG. 10 is a diagram showing how video and audio sectors of a compression program are alternately inserted when recorded on a conventional video CD.

FIG. 11 is a diagram showing how supplementary sectors are alternately inserted with audio sectors of a compressed audio program when recorded on a conventional video CD.

FIG. 12 is a diagram showing how audio sectors of a compressed audio program are collected when recorded on a conventional video CD.

[Explanation of symbols]

 V Video sector A Audio sector S Supplementary sector T Track B block AS (i, j) Audio sector 10 SYNC column 11 ID column 12 Data column 13 Error management code column TN Track number BN Block number PN Program number SN Sector number CI Contact information P (0) to P (5) Compressed audio program 2 Recording device 4 Recording medium 20 Audio compressor 21 Storage device 22 Division controller 23 Alternate inserter 24 Error management code generator 25 SYNC generator 26 ID generator 27 Sector format Multiplexer 28 Recording mechanism 3 Reproducing device 30 CD drive 31 Extraction controller 32 SYNC detector 33 Error management processor 34 ID extractor 35 Sector data extractor 36 FIFO memory device 37 Audio decompressor 38 Reproduction sequencer

Claims (42)

[Claims] 1. At least one track (T), said track (T) comprising at least one block (B), each block (B) comprising a plurality of interleaved compressed audio programs. And each compressed audio program is divided into a small number of portions to form a number of continuous audio sectors equal to the number of the sub-blocks, and each audio sector of the compressed audio program is included in each sub-block. And a j-th audio sector AS (i, j) of each compressed audio program is arranged in a j-th sub-block. 2. The recording medium according to claim 1, wherein the recording medium is a compact disc (C).
2. The recording medium according to claim 1, wherein the recording medium comprises D). 3. The compressed audio program according to claim 1, wherein each of the compressed audio programs is provided with a program number in an ascending order, and audio sectors in each sub-block are arranged in a format of the compressed audio program in an ascending order to which the sub-block belongs. Recording medium. 4. The recording medium according to claim 1, wherein said compressed audio program is an MPEG compressed audio program. 5. The recording medium according to claim 4, wherein said block comprises six compressed audio programs. 6. The recording medium according to claim 1, wherein each audio sector includes a SYNC column for storing a SYNC word, an ID column for storing an ID code unique to each audio sector, and a data column. . 7. Each of the voice sectors further includes an error management code field for storing an error management code, wherein the error management code includes at least one error detection code and one error correction code. 7. The recording medium according to 6. 8. The ID code includes a program number indicating a compressed audio program on a block to which the audio sector belongs, and a sector number indicating a sector number of an audio sector in the compressed audio program to which the audio sector belongs. The recording medium according to claim 6, wherein the recording medium comprises: 9. The recording medium according to claim 8, wherein said ID code includes a block number and indicates a block on a track to which an audio sector belongs. 10. The recording medium according to claim 9, wherein the ID code includes a track number indicating a track of the recording medium to which the audio sector belongs. 11. The recording medium according to claim 1, wherein a supplementary bit set is supplemented to a relatively short compressed audio program so that its length is equal to the longest compressed audio program. 12. The recording medium according to claim 11, wherein each of the audio sectors has an equal length. 13. The recording medium according to claim 1, wherein each of the audio sectors has an equal length. 14. A method of compressing an input audio program to obtain a plurality of compressed audio programs, dividing each of the compressed audio programs into the same number of continuous compressed program segments, and forming a block by alternately inserting compressed audio program segments of each of the compressed audio programs in a manner of concentrating the j compressed audio programs in the j-th consecutive group in ascending order. Recording method for recording audio programs. 15. The recording method according to claim 14, wherein the recording medium is a compact disk (CD). 16. Each of the compressed audio programs is assigned a program number in an ascending sequence, and the compressed audio program segments in each group are arranged in the ascending sequence of the compressed audio program to which they belong during the period of alternate insertion. The recording method according to claim 14, comprising: 17. The apparatus according to claim 14, wherein said input audio program is compressed by an MPEG audio compression method.
Recording method described in 1. 18. The recording method according to claim 17, wherein said block comprises six compressed audio programs. 19. A step of adding a SYNC word and an ID code unique to each compressed audio program segment to each compressed audio program segment to form an audio sector corresponding to the compressed audio program segment, and recording the audio sector. Recording on a track of a medium. 20. The recording method according to claim 19, wherein each of the compressed audio program segments further includes an error management code, and the error management code comprises at least one error detection code and one error correction code. 21. The ID code includes a program number indicating a compressed audio program on a block to which the audio sector belongs, and a sector number indicating a sector number of an audio sector in the compressed audio program to which the audio sector belongs. 20. The recording method according to claim 19, wherein: 22. The recording method according to claim 21, wherein the ID code includes a block number and indicates a block on a track to which the audio sector belongs. 23. The recording method according to claim 22, wherein the ID code includes a track number indicating a track of a recording medium to which the audio sector belongs. 24. The recording method according to claim 19, further comprising a step of scrambling the audio sector before recording on the recording medium. 25. When the compressed audio program is divided, a supplementary bit set is interpolated into a relatively short compressed audio program so that the length of the relatively short compressed audio program is equal to the longest compressed audio program. The recording method according to claim 14, comprising a step. 26. The recording method according to claim 25, wherein the compressed audio program segments have the same length. 27. The recording method according to claim 14, wherein the compressed audio program segments have the same length. 28. An audio compressor for compressing an input audio program to obtain a plurality of compressed audio programs, wherein said audio compressor is connected to divide each compressed audio program into the same number of continuous compressed audio program segments. Separating means, connected to the separating means, to concentrate the j-th compressed audio program of the compressed audio program into a continuous group of j-th ascending sequence, and to insert the compressed audio program segments alternately to form a block. A recording device for recording an audio program on a recording medium comprising an alternating inserter to be formed. 29. The recording apparatus according to claim 28, wherein the recording medium is a compact disc (CD). 30. Each of the compressed audio programs is provided with a program number in an ascending sequence, and the compressed audio program segments in each group are arranged in the ascending sequence of the compressed audio programs to which they belong by an alternate inserter. Item 30. The recording device according to item 28. 31. The recording apparatus according to claim 28, wherein said audio compressor compresses said input audio program using an MPEG audio compression method. 32. A storage device connected to the audio compressor for storing a compressed audio program from the audio compressor, and a compressed audio program in the storage device connected to the storage device. Divide the program into continuous compressed audio program segments,
29. The recording device according to claim 28, further comprising: a stage controller for storing the continuous compressed audio program segment in the storage device. 33. The alternate insertion device is connected to the storage device and the stage controller, and the compressed audio program segments in the storage device are sequentially read and output as a group under the control of the stage controller. Claim 3
3. The recording device according to 2. 34. A SYNC generator used to generate a SYNC word, coupled to the cascade controller, controlled by the cascade controller, and specific to each compressed audio program segment output by the alternate inserter. An ID generator for generating the ID code of the above, and the interleaving controller, the interleaving device, the SYNC generator and the ID generator being connected to each other, under the control of the interfering controller. The SY coming from the SYNC generator is added to the compressed audio program segment output from the generator.
A sector format multiplexer for adding an NC word and a corresponding ID code coming from the ID generator to form an audio sector corresponding to the compressed audio program segment; and a sector format multiplexer coupled to the sector format multiplexer to record the audio sector. 34. The recording apparatus according to claim 33, further comprising: a recording mechanism adapted to perform recording on a recording medium. 35. An error management code generator coupled to said alternate inserter and said sector format multiplexer, each generating an error management code coming from the compressed audio program segment of said alternate inserter, said sector format multiplexer comprising 35. The recording apparatus according to claim 34, wherein a corresponding error management code from the error management code generator is added to the compressed audio program segment output from the alternate inserter. 36. The recording apparatus according to claim 35, wherein the error management code includes at least one error detection code and one error correction code. 37. The ID code includes a program number indicating a compressed audio program on a block to which the audio sector belongs, and a sector number indicating a sector number of an audio sector in the compressed audio program to which the audio sector belongs. 35. The recording device according to claim 34, wherein: 38. The recording apparatus according to claim 37, wherein the ID code includes a block number and indicates a block on a track to which the audio sector belongs. 39. The recording apparatus according to claim 38, wherein the ID code includes a track number indicating a track of a recording medium to which the audio sector belongs. 40. The separating means compensates the supplementary bit set in a relatively short compressed audio program so that the length of the relatively short compressed audio program is equal to the longest compressed audio program. 29. The recording device according to 28. 41. The recording device according to claim 40, wherein the compressed audio program segments have the same length. 42. The recording device according to claim 28, wherein the compressed audio program segments have the same length.