JPH11176103A - Digital information recording and reproducing system and defect control method applied to the system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording and reproducing system for recording and reproducing computer data and AV information onto and from a disk storage medium, in which a defect control function to secure high reliability of data processing and enable normal data reproduction processing can be realized in the case where a defective area is generated on the disk storage medium. SOLUTION: In a recording and reproducing system having a DVD-RAM drive 1, a CP data table and an AV data table are provided as an address conversion table (RAM 12) for managing an address necessary for access processing of a DVD 14. In the case of CP data at the time when a defective block is generated, a CPU 10 rewrites the physical address of the CP data table by using a spare block. In the case of AV data, the CPU 10 uses a defective block as it is and maintains the physical address of the AV data table.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing system for recording digital information including AV information such as digital video information and audio information on a disk storage medium and reproducing the digital information from the disk storage medium. .

[0002]

2. Description of the Related Art In recent years, recording and reproducing systems for recording and reproducing so-called multimedia information such as digital video information (including still images) and audio information have been promoted. In particular, a DVD drive using a DVD (digital video disk) as a storage medium has attracted attention. The DVD drive contains a read-only DVD.
-ROM drive and DVD-RAM capable of recording and reproduction
There is a drive. Note that stream information including continuous data such as video information and audio information is referred to as AV information. The AV information means information obtained by integrating video information and audio information, or only one of the information.

A DVD-RAM drive not only reproduces AV information recorded on a DVD in advance, but also
For example, it has a function of recording or recording AV information or personal computer data transmitted from a digital broadcasting station. For this reason, DVD-RAM drives
Attention has been paid not only to a function as a video player or a video deck for reproducing AV information on the screen of a television receiver, but also to an external storage device of a personal computer. In the future, a DVD-RAM drive will have a receiving device (including an antenna) for digital satellite broadcasting, for example, and display the received digital AV information on a display (screen) of a television receiver or a personal computer. Set-top box (settop box) or IRD (integer)
It is promising as a storage medium built in a device such as a graded receiver decoder.

[0004] A disk storage medium used in such a DVD-RAM drive is required to have high reliability especially when used as an external storage medium of a personal computer. That is, when a data write error or a data read error occurs, the computer may not operate normally. As a method of improving the reliability of such a disk storage medium, an alternative area (spare area)
Is prepared on a disk storage medium, and when a defective area (a storage area in which a data write error has occurred) occurs, there is a defect management method of writing data to a substitute area.

[0005]

As described above, the DV
The disk storage medium used in the D-RAM drive employs a defect management method using an alternative area (spare area) in order to ensure high reliability. In this defect management system, a logical block (a management unit on the host system side and may be referred to as a logical sector), which is an access unit, and a physical block (which means a physical storage area on a disk storage medium; May be called) on the address translation conversion showing the correspondence relationship with
A process of changing the physical block corresponding to the defective block to the address of the substitute block is performed.

When accessing a logical block requested by the host system, the drive controller (CPU) obtains a physical block corresponding to the logical block from the address conversion table and performs data recording and reproduction. . Here, when the physical block is a defective block, the address of the replacement block is registered corresponding to the corresponding logical block. Therefore, CPU
When the access target is data of a defective block, the corresponding alternative block is accessed.

[0007] Data handled by a personal computer (referred to as computer data or CP data) can be handled on a logical block basis. For this reason, when a defective block occurs, the drive actually accesses the replacement block, so that the access operation may not be continuous. However, there is no problem. However, as mentioned above,
In a recording / reproducing system for recording and reproducing AV information, it is necessary to handle AV information as continuous data (stream information). In the conventional defect management method, when a defective block occurs, an alternative block is used.
When information is continuously reproduced, data to be recorded in a defective block (not necessarily in units of a stream) is read from a substitute block and reproduced. Therefore, there is a high possibility that a phenomenon in which the reproduction of the AV information is temporarily interrupted when the access operation shifts from the continuous physical block to the substitute block during the reproduction processing of the AV information. In short, in a recording / reproducing system that handles a plurality of types of data, such as AV information composed of CP data and continuous data (also referred to as AV data), simply applying a conventional defect management method is inconvenient, especially when reproducing data. Occurs.

Accordingly, an object of the present invention is to provide a recording / reproducing system for recording and reproducing computer data and AV information on a disk storage medium, and to provide high reliability of data processing when a defective area occurs on the disk storage medium. Another object of the present invention is to provide a system which can secure a defect management function and can realize a defect management function capable of performing data reproduction processing normally.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a DVD, for example.
-In a recording / reproducing system having a RAM drive,
Assuming a logical block that is an access unit for recording or reproducing data on a disk storage medium, address conversion means (for a specific example, a correspondence example) indicating a correspondence between the logical block and a physical block that is a physical area on the disk storage medium Table) is assumed. The address conversion means of the present system includes a conversion means for CP for converting the address of computer data and a conversion means for AV for converting the address of AV information composed of continuous data (stream information).

The conversion means for CP is an address conversion means for converting between a logical address designating the logical block and a physical address designating the physical block when recording or reproducing the computer data on the disk storage medium. It is. The AV conversion means is an address conversion conversion for converting between a logical address designating a logical block and a physical address designating a physical block when recording or reproducing AV information on a disk storage medium. In response to an access request from the host system, if the access target is computer data, the control means of the present system refers to the CP conversion means to perform recording / reproduction on a predetermined physical block of the disk storage medium. If the access target is AV information, the recording / reproduction is executed for a predetermined physical block of the disk storage medium by referring to the AV conversion means.

In such a recording / reproducing system, the address conversion means is selected and used for access control according to the type of data to be recorded on the disk storage medium. That is, the conversion means for CP is used for computer data, and the conversion means for AV is used for AV information.
Therefore, it becomes possible to adapt the management of the recorded data on the disk storage medium according to the handling method of each data. Specifically, in the defect management function, in the case of computer data, a conventional defect management method can be applied using a CP conversion unit. Further, in the case of AV information, it is possible to realize a defect management function suitable for continuous data reproduction characteristics by applying a method different from the conventional defect management method by using an AV conversion means. Become.

As another aspect of the present invention, a spare area having a substitute block for a defective physical block is prepared in advance on the disk storage medium, and when a defective block occurs, rewriting of the address conversion means is controlled. This is a recording / reproducing system having a defect processing unit. When writing the computer data in response to an access request from the host system, the defect processing means selects and writes an alternative block if the corresponding physical block is a defective block, and writes the corresponding physical address of the CP conversion means. Is replaced with a physical address designating the replacement block. Further, when writing the AV information, the defect processing unit does not use the replacement block and uses the relevant block registered in the AV conversion unit even if the physical block for writing the block data included in the AV information is a defective block. The control for maintaining the physical address for designating the physical block is executed.

In such a recording / reproducing system, A
When a defective block occurs in a physical block for recording V information, unlike the case of computer data,
Address management is performed to maintain a defective block without using a replacement block. Therefore, the system is A
When the V information is reproduced, the data recorded in the defective block is incompletely reproduced, but a phenomenon such as reproduction interruption when accessing the replacement block does not occur. In short, by using the conversion means for CP, while performing effective defect management for computer data,
By using the AV conversion means, continuous reproduction processing of AV information can be realized.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a main part of a recording / reproducing system related to the present embodiment. (System Configuration) As shown in FIG.
It comprises a VD-RAM drive 1 and a host system 2. The host system 2 is assumed to be a personal computer, and digital AV information (hereinafter sometimes referred to as AV data) read from the DVD-RAM drive 1 and ordinary computer data (hereinafter sometimes referred to as CP data). And a device for inputting various commands required for the recording / reproducing operation of the DVD-RAM drive 1 (keyboard, mouse, etc.). Here, as described above, the AV information has information including stream information composed of continuous data such as video information and audio information, and means information including various types of control information necessary for reproduction control. The AV information also means information consisting of only video information or audio information as stream information.

The DVD-RAM drive 1 roughly includes a main control unit 10, an input / output interface 11, a RAM 12 for storing an address conversion table, an access control unit 13, a disk (DVD) 14, and an encoder / decoder 15. ing. The input / output interface 11 communicates AV data, CP data with the host system 2.
Controls input and output of data and various commands. The main control unit 10 is a microprocessor (hereinafter referred to as a CPU), and controls the access control unit 13 to execute recording / reproduction control and defect management processing related to the present embodiment.

The address conversion table is a table for managing addresses when the disk 14 is accessed to record and reproduce data, and is stored in a predetermined area of the disk 14. The CPU 10 loads the address conversion table read from the disk 14 into the RAM 12 for use. The address conversion table of the present embodiment is
As will be described later, it comprises a CP data table 12a for managing the address of the CP data and an AV data table 12b for managing the address of the AV data (see FIG. 2).

The disk 14 is a DVD capable of recording and reproducing continuous data (stream information) such as AV data and CP data that can be handled in logical block units. The access control unit 13 performs a recording / reproducing operation on the disk 14 under the control of the CPU 10. The encoder / decoder 15 is, for example, an MPEG (movi
ng picture coding experts
group) This is an apparatus for executing each processing of moving picture encoding and moving picture decoding of the two systems. (Configuration of Address Conversion Table) As shown in FIGS. 2A and 2B, the address conversion table includes a CP data table 12a for managing CP data addresses and an AV data address. It consists of an AV data table 12b. Each table 12a, 12b
Is information indicating a correspondence between a logical block number (logical address) managed by the host system 2 and a physical block number (physical address) indicating a physical storage area on the DVD 14.

Here, the recording area 14a on the DVD 14
As shown in FIG. 3, is divided into a number of physical blocks (corresponding to a sector of an access unit), and physical block numbers (100 to 104, 200 to 204) are respectively assigned. In the CP data table 12a,
It is assumed that physical block numbers (100 to 103) are assigned corresponding to logical block numbers (0 to 3). It is also assumed that physical block numbers (200 to 203) are assigned to the AV data table 12b in correspondence with the logical block numbers (100 to 103).

In this embodiment, as shown in FIG. 3, a spare area 14b is provided on the DVD 14 in a storage area different from the recording area 14a. The spare area 14b is an area for supplying a replacement block (spare block) corresponding to the defective block.
Here, it is assumed that a physical block number (1000 to 1004) is assigned to each spare block. (Defect Management Process of this Embodiment) The defect management process of this embodiment will be described below with reference to FIGS. 1 to 3 and a flowchart of FIG.

First, basically, the CPU 10 of the DVD-RAM drive controls the access control unit 13 in response to an access request (command) transferred from the host system 2 via the input / output interface 11 to control the DVD.
14 to record AV data or CP data,
The control for reproducing from the VD 14 is executed. For example, when an access request for reproducing AV information is transferred from the host system 2, the CPU 10 reads the AV data recorded from the DVD 14 and transfers the read AV data to the host system 2 via the input / output interface 11. As a result, the host system 2 executes a reproduction process for displaying and outputting the transferred AV information on the screen of the display device.

Here, when a command for recording CP data is transferred from the host system 2, the CPU 10
Represents the CP data transferred from the host system 2 as a DVD
14 is executed (step S).
1). At this time, the command from the host system 2 includes a logical address which is a logical block number. The CPU 10 specifies a free physical block on the DVD 14 with reference to the tables 12a and 12b, and executes control to write the CP data to be recorded to the physical block. At this time, the CPU 10 registers the logical block number (for example, 0) and the corresponding physical block number (for example, 100) on the CP data table 12a.

After the end of the writing process, the CPU 10
A verify process is performed to determine whether or not the recording data is normal (steps S2 and S3). If a write error does not occur due to the verify processing, the command processing for recording the CP data from the host system 2 ends (NO in step S4).

Here, the CPU 10 is connected to the host system 2.
As shown in FIG. 3, it is assumed that the CP data is written to the physical block (103) of the recording area 14a on the DVD 14 at the logical block number (3) starting from. Therefore, the logical block number (3) and the corresponding physical block number (1) are stored in the CP data table 12a.
03) is registered. Then, it is assumed that a write error occurs when the verify process is executed (YES in steps S3 and S4).

When a write error occurs, the CPU 1
0 determines that the physical block (103) to be recorded is a defective block and executes defect management processing. In the present embodiment, when the data to be accessed is CP data, the CPU 10 sets a spare block (here, a physical block number 1000) from the spare area 14b as a substitute block corresponding to the defective block (step S5). ).

That is, the CPU 10 determines the CP to be accessed.
The write process of writing data to the set spare block (1000) is executed again. And the CPU 10
Rewrites the physical block number corresponding to the logical block number (3) on the CP data table 12a with the physical block number (1000) of the spare block (step S6).

As described above, in the recording operation of the CP data,
If the physical block to be recorded is a defective block, C
The PU 10 uses the spare block as a substitute block, and writes the CP data to be recorded in the spare block. Thus, when the host system 2 issues an access request for reproducing the CP data of the logical block number (3), the CPU 10 refers to the CP data table 12a and sets the physical block as a physical block corresponding to the logical block number (3). The spare block of the block number (1000) is recognized (see FIG. 2A). Therefore, the CPU 10
Reads the CP data from the spare block (1000) and transfers it to the host system 2.

On the other hand, when a command for recording AV information is transferred from the host system 2, the CPU 10 transfers the AV data transferred from the host system 2 to the DVD 14.
A write process for writing data on the top is executed (step S
1). At this time, in the same manner as described above, the CPU 10 specifies a free physical block on the DVD 14 by referring to each of the tables 12a and 12b, and executes control to write AV data to be recorded to the physical block. The CPU 10
In the V data table 12B, a logical block number (for example, 100) and a corresponding physical block number (for example, 2
00) will be registered.

After completion of the writing process, the CPU 10
A verify process is performed to determine whether or not the recording data (AV data) is normal (N in step S2).
O, S7). If a write error does not occur by this verify processing, the AV
The command processing for recording data ends (NO in step S8). The logical block number (100) and the corresponding physical block number (200) are registered on the AV data table 12b.

On the other hand, in the logical block number (103) from the host system 2, as shown in FIG.
It is assumed that AV data is written and processed in the physical block (203) of the recording area 14a on 14. Therefore, the logical block number (103) and the corresponding physical block number (203) are stored in the AV data table 12b.
Is registered.

Here, if a write error occurs during the execution of the verify process, the CPU 10 sets the physical block (203) to be recorded in the same manner as described above.
Is determined to be a defective block. In the present embodiment, when the data to be accessed is AV data, the CPU 1
0 does not execute the defect management processing for setting a spare block from the spare area 14b even when the data write processing is executed on the defective block. That is, the CPU 10
The logical block number (10
As a physical block corresponding to 3), a defective block (2
03) is maintained as it is as a physical block (step S9).

As described above, in the recording operation of AV data,
Even if the physical block to be recorded is a defective block, C
The PU 10 does not use the spare block as a substitute block, but maintains the defective block as a physical block on which write processing has been performed.

Here, when an access request for reproducing AV information is issued from the host system 2, the CPU 10
With reference to the V data table 12b, for example, a series of physical blocks (200) to (203) corresponding to the logical block numbers (100) to (103) are accessed. That is, the CPU 10 reads stream information having continuous data from each of the physical blocks (200) to (203),
Transfer to host system 2. Unlike the CP data, the AV information is not reproduced in units of physical blocks, but is continuously reproduced for a plurality of physical blocks. At this time, as described above, the defective block of the logical block number (203) is also accessed in the series of stream information. Since a writing error has occurred in the defective block (203), AV data is not recorded normally, and normal reproduction cannot be performed (a phenomenon such as a part of reproduced video being disturbed).

As described above, according to the present embodiment, a spare block is replaced by a verify process during a data write process when a physical block to be written is a defective block and when a record target is CP data. Execute the defect management process used as a block. Therefore, CP data that is highly likely to be accessed in physical block units can be recorded in normal physical blocks including spare blocks. As a result, it is possible to use a disk storage medium having high reliability as the recording / reproducing performance of CP data, and as a result, high reliability can be ensured for the host system 2.

On the other hand, when the recording target is AV data,
The defective block is used as it is without performing the defect management process using the spare block as a substitute block.
Therefore, when a series of physical blocks including a defective block is accessed and AV data that is continuous data is reproduced, interruption of the reproduction operation such that the CPU 10 accesses a spare block at the time of accessing the defective block occurs. do not do. This eliminates a phenomenon in which video reproduction is interrupted while a series of stream information is being reproduced on the screen of the display device in the host system 2. However, although there is a high possibility that the AV data recorded in the defective block cannot be normally reproduced, the reproduction time is short.
It is only a degree that some screen disturbance occurs. (Modification of the present embodiment) FIG. 5 is a diagram showing a first modification of the present embodiment. In this modification, a current table 12c is used as an address conversion table in addition to the CP data table 12a and the AV data table 12b of the present embodiment.
It is a method provided with. This current table 12c is
As shown in FIG. 5, it is a table for setting a logical block number and a physical block number in the order of an access request. That is, in the present embodiment, the CP
Data table 12a and AV data table 12
Since the address is managed by each of b,
If the CPU 10 cannot detect the type of data at the time of the access request, it cannot refer to the address conversion table.

Therefore, in this modification, the current table 1
By providing the 2c, the CPU 10 can manage the current address of the DVD 14 by referring to the current table 12c at the time of an access request. (Modification of the present embodiment) FIG. 6 is a diagram showing a modification 2 of the present embodiment. This embodiment has a CP data table 12a and an AV data table 12b as address conversion means, and performs a process of converting a logical address into a physical address using table information registered in each of the tables 12a and 12b. This is the method to be executed. On the other hand, in the present modification, the CPU 10 assumes a predetermined conversion rule in the relationship between the logical address and the physical address and executes a conversion algorithm (program) prepared in advance to convert the logical address into the physical address. This is a method of executing a conversion process. However, as described above, when a write error occurs and it is necessary to set a replacement block corresponding to the defective block, the CPU 10 uses the difference table 12d to store the spare block registered in the difference table 12d. Use the physical block number of the block.

More specifically, as shown in FIG.
0 converts a logical block number to a physical block number in a normal access by executing a conversion algorithm (program) prepared in advance. Here, it is assumed that the CPU 10 writes the CP data in the physical block (103) of the recording area 14a on the DVD 14 in correspondence with the logical block number (3) as described above. At this time, assuming that a write error occurs when the verify processing is executed, the CPU 10 sets a spare block (physical block number 1000) from the spare area 14b as a substitute block corresponding to the defective block. , Difference table 1
Register in 2d.

[0037]

As described in detail above, according to the present invention, A
In a recording / reproducing system for recording / reproducing plural kinds of data of V information and CP data, it is possible to realize a defect management function adapted to respective access characteristics of AV information and CP data which are continuous data (stream information). That is, when a defective area occurs on the disk storage medium, the CP
In recording and reproducing data, high reliability is ensured.
It is possible to maintain the continuous reproduction characteristic of V information. Therefore, if the present invention is applied to a system that handles multimedia information, an excellent defect management function can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part of a recording / reproducing system according to an embodiment of the present invention.

FIG. 2 is an exemplary conceptual diagram for explaining an address conversion table according to the embodiment;

FIG. 3 is a conceptual diagram for explaining a defect management process of the embodiment.

FIG. 4 is an exemplary flowchart for explaining a defect management process according to the embodiment;

FIG. 5 is a conceptual diagram for explaining a first modification of the embodiment.

FIG. 6 is a conceptual diagram for explaining a second modification of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... DVD-RAM drive 2 ... Host system 10 ... Main control part (CPU) 11 ... Input / output interface 12 ... RAM (address conversion table) 12a ... CP data table 12b ... AV data table 13 ... Access control part 14 ... Disc (DVD) 15: Encoder / decoder

Claims (10)

[Claims] 1. A method of recording continuous information as AV information or computer data that can be handled in logical block units on a disk storage medium, and storing data in physical block units corresponding to logical blocks as access units from a host system. What is claimed is: 1. A recording / reproducing system for performing recording / reproducing, wherein when recording or reproducing the computer data on / from the disk storage medium, conversion between a logical address designating the logical block and a physical address designating the physical block is performed. CP conversion means for converting a logical address designating the logical block and a physical address designating the physical block when recording or reproducing the AV information on or from the disk storage medium. Conversion means, in response to an access request from the host system If the access target is the computer data, the CP
The recording / reproducing is performed on a predetermined physical block of the disk storage medium with reference to the conversion means for the disk. And a control unit for performing recording and reproduction on the physical block. 2. A spare area having a substitute block for a defective physical block is prepared in advance on the disk storage medium, and a spare area corresponding to the computer data is written in response to an access request from the host system. When the physical block is a defective block, the alternative block is selected and written, and the processing for rewriting a corresponding physical address of the CP conversion means to a physical address designating the alternative block is executed. Sometimes, even when the physical block for writing the block data included in the AV information is a defective block, the physical block registered in the AV conversion unit is designated without using the substitute block. 2. The recording apparatus according to claim 1, further comprising a defect processing unit for maintaining a physical address. Raw system. 3. A spare area having a substitute block of a defective physical block is prepared in advance on the disk storage medium, and a spare area corresponding to the computer data is written in response to an access request from the host system. When the physical block is a defective block, the alternative block is selected and written, and the processing for rewriting a corresponding physical address of the CP conversion means to a physical address designating the alternative block is executed. 3. The apparatus according to claim 2, further comprising a defect processing unit for registering the substitute block in the AV conversion unit in advance when a physical block for writing block data included in the AV information is a defective block. The recording / reproducing system as described. 4. The method according to claim 1, wherein the control unit refers to the AV conversion unit in response to an access request for reproducing the AV information from the host system, reads data from a physical block to be accessed, and performs reproduction processing. 3. The recording / reproducing system according to claim 1, wherein the reproducing process is continued even when the physical block is a defective block. 5. Recording of continuous information as AV information or computer data that can be handled in logical block units on a disk storage medium, and data transfer in physical block units corresponding to logical blocks as access units from the host system. What is claimed is: 1. A recording / reproducing system for performing recording / reproducing, wherein when recording or reproducing the computer data on / from the disk storage medium, conversion between a logical address designating the logical block and a physical address designating the physical block is performed. CP conversion means for converting a logical address designating the logical block and a physical address designating the physical block when recording or reproducing the AV information on or from the disk storage medium. Conversion means, in response to an access request from the host system When writing the computer data to the disk storage medium, the physical address corresponding to the logical address to be accessed is registered in the conversion means for CP. When writing the AV information to the disk storage medium, The physical address corresponding to the target logical address is
Registering means for registering the data in the conversion means; and when writing the computer data, if the corresponding physical block is a defective block, writing the data in a substitute block prepared in advance on the disk storage medium;
Performing a process of rewriting the corresponding physical address of the P conversion means to a physical address designating the replacement block;
When writing the AV information, even if the physical block for writing the block data included in the AV information is a defective block, the physical block registered in the AV conversion means without using the substitute block is used. And a defect processing means for maintaining a physical address for designating the data. 6. In response to an access request for reproducing data from the host system, if the access target is the computer data, the data is read from the physical block or the substitute block to be accessed by referring to the CP conversion means. If the access target is the AV information, the data is read from the physical block to be accessed with reference to the AV conversion means, and the reproduction process is continued even if the physical block is a defective block. 6. The recording / reproducing system according to claim 5, further comprising a reproduction processing unit. 7. Recording of AV information as continuous data or computer data that can be handled in units of logical blocks on a disk storage medium, and data transfer in units of physical blocks corresponding to logical blocks as units of access from the host system. A defect management method applied to a recording / reproducing system for performing recording / reproduction, wherein when recording or reproducing the computer data on / from the disk storage medium, a physical address specifying the logical block and a physical address specifying the physical block CP conversion means for performing conversion with an address, and conversion of a logical address designating the logical block and a physical address designating the physical block when recording or reproducing the AV information on or from the disk storage medium. Computer having AV conversion means for performing Determining whether the physical block corresponding to the write target is a defective block when writing the data or the AV information; and, when determining that the physical block is a defective block, writing the computer data to the disk. Executing a process of writing to a substitute block prepared in advance on a storage medium and rewriting a corresponding physical address of the conversion unit for CP to a physical address designating the substitute block; and determining that the block is the defective block. In this case, when writing the AV information, even if the physical block for writing the block data included in the AV information is a defective block, the physical block registered in the AV conversion unit without using the substitute block is used. Maintaining physical addresses for designating blocks. And a defect management method. 8. Recording of AV information as continuous data or computer data that can be handled in logical block units on a disk storage medium, and data transfer in physical block units corresponding to logical blocks as access units from the host system. What is claimed is: 1. A recording / reproducing system for performing recording / reproducing, wherein when recording or reproducing the computer data on / from the disk storage medium, conversion between a logical address designating the logical block and a physical address designating the physical block is performed. CP conversion means for converting a logical address designating the logical block and a physical address designating the physical block when recording or reproducing the AV information on or from the disk storage medium. Conversion means, in response to an access request from the host system Without discriminating between the computer data and the AV information and registering a correspondence between a physical address designating a physical block in which data is recorded on the disk storage medium and a corresponding logical address in the order of data recording access request. A predetermined physical block of the disk storage medium by referring to one of the CP conversion means and the AV conversion means together with the current conversion means in response to an access request from the host system; A recording / reproducing system comprising: a control unit for performing recording / reproducing with respect to the system. 9. The control unit refers to the current conversion unit based on a logical address associated with an access request from the host system, and stores data recorded in a physical block corresponding to the logical address with the computer data or 9. The recording / reproducing system according to claim 8, wherein one of the AV information is identified. 10. The conversion means for CP and the conversion means for AV are address conversion table means storing table information in which the logical address is associated with the physical address. The recording / reproducing system according to any one of claims 1, 2, 3, 4, 5, and 6.