JP2003187529A - Information recording/reproducing device and information recording/reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the amount of using a replacement area by reducing the amount of replacing a nondefective area as much as possible when the nondefective area is replaced together with a defective area. <P>SOLUTION: When a driving controller 7 divides the inside of a recording area on an optical disk 1 into predetermined unit areas to record data by a program in a nonvolatile memory 12, if a defective sector and a nondefetive sector are mixed in the predetermined unit area, and the nondefective area is equal to/lower than a predetermined amount, the nondefective area sector is replaced. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a recording area on a data recording medium (such as a rewritable optical disk such as a CD-RW disk or a DVD + RW disk) and a replacement area when a defect exists. An information recording / reproducing apparatus (CD-RW drive, DVD + RW drive, etc.) in which information is recorded and reproduced by rotationally driving an information recording medium and a defect management system when a defect exists in a recording area is introduced. Optical disk device, etc.) and the information recording / reproducing method thereof.

[0002]

2. Description of the Related Art For an optical information recording medium (hereinafter referred to as "optical disc") having an apparatus for irradiating an optical laser and capable of recording information (data) by irradiating the recording area with the optical laser. There is an optical information recording / reproducing apparatus (hereinafter referred to as “optical disk apparatus”) that irradiates a light laser to record and reproduce information. Hereinafter, these optical disks and optical disk devices are collectively referred to as an optical disk system. In such an optical disc system,
When there is a defective area in which data cannot be correctly recorded or reproduced in the recording area of the optical disc, an alternative process is performed in which the data in the defective area is re-recorded in the alternative area by using the replacement area provided in advance in the optical disk. A defect management system for preventing information loss due to a defective area by performing (also referred to as "replacement processing") and providing defect management information for managing the defective area is introduced (for example, Japanese Patent Laid-Open No. 9- 259538, JP-A-9-
265732).

Under the defect management system, when reproducing the data in the recording area of the optical disc, first, the defect management information is referred to check whether or not the data in the recording area is replaced. When there is data that has been subjected to the replacement process in the replacement area, it is necessary to reproduce the data in the recording area as well as the data in the replacement area and to transfer those data correctly. When reproducing the data, when defective areas (defective sectors) are scattered in the data in the recording area, the data (replacement area) replaced with the data replaced in the recording area where the reproduction is requested Will be mixed. In that case, the data reproduction that has not been replaced and the data reproduction that has been replaced frequently occur alternately, resulting in a long reproduction processing time.

The data reproducing process by the above defect management system will be specifically described. Assuming that a defect management system has been introduced for optical discs, DVD-R
DV consisting of AM disk and DVD-RAM drive
D-RAM systems are known. Also, CD-RW
Mount Rainier (Mt. Rainie) as a defect management system for discs and DVD + RW discs
r). Here, CD-RW disc and CD-R
Mount Rainier for a CD-RW system including a W drive will be described.

FIG. 6 is a diagram showing a disc format of a CD-RW disc. The mount Rainier of the CD-RW system is a standard for the CD-RW disc, and rewriting is performed in the unit of block (Block) which is the minimum information unit of the CD as shown by B1 to B32 in (e) of the figure. Therefore, P1 to P136 are shown in (c) of FIG.
Fixed Packet (Fixed Packet)
t) formatted CD-RW
Use a disc. A packet (Packet) is a minimum recording unit of data, and in the mount Rainier of the CD-RW system, one recording area: DA is composed of 136 packets, and a replacement area: SA is composed of 8 packets.

There is a user data block (User Data Block) 28 shown in (d) of the same figure. This user data block is a block for recording data on a CD-RW disc, and one packet is always linked. Blocks, run-in blocks and run-out blocks are required. In addition to this user data block, a link block (Link Block) 26 and a run-in block (Run-In Block) composed of four blocks are provided.
ck) 27 and a run-out block (Run-Out Block) 29 consisting of 2 blocks, it is necessary to add a packet size of 32 blocks in order to increase the recording capacity. The unit is one block. Block
Reference numeral 30 is the minimum reproduction unit of data, and in the Mount Rainier of the CD-RW system, one user data block is composed of 32 blocks.

Therefore, when a certain block has a defect and is to be replaced, recording is executed in packet units of 32 blocks. Therefore, the replacement destination packet is read, and the data of the block to be replaced next is replaced. It must be replaced for the block in the previous packet and then recorded in packet units. This is called a read-modify-write. As a result, random writing (Random Write) in block units is realized in the CD-RW system. Also, mount the CD-RW system
In Rainier, a program area (ProgramArea) 21 sandwiched between a lead-in area (Lead-In Area) 20 and a lead-out area (Lead-Out Area) 22 shown in (a) of FIG. It is divided by a predetermined unit area consisting of a set. That is, a plurality of normal data areas (Data Area) indicated by DA1 to DAx + 1 in FIG.
User data recording area 24 and SA1 to SAx + 1
Spare areas 23 shown by are alternately arranged.

Further, when there is a spare area SAx corresponding to each data area DAx and the spare area SAx is used up in the spare processing, the next spare area SAx + 1 is used. At this time, the defect management information such as the address of the replaced data source and the address of the replaced data is stored in the main table area (main table area: Main Table Area) in the lead-in area 20 and the last position of the program area 21. A sub-table area (secondary table area: Secondary Table)
Area).

In such a CD-RW system, when reproducing the recorded user data, the defect management information is read, and it is confirmed whether or not the user data in the recording area of the reproduction destination has been replaced. It is necessary to reproduce the user data of the reproduction destination that has not been subjected to the replacement processing and the user data of the corresponding replacement destination when the replacement processing has been performed and transfer them to the host device (host computer) connected to the CD-RW system. is there. Therefore, if multiple pieces of data that have undergone replacement processing exist within the range of user data in the recording area to be played back, frequent access between the replacement source and replacement destination occurs, and management of read data (replacement source data and replacement Differentiation of the previous data) becomes complicated.

FIG. 7 is a diagram for explaining replacement processing when a block in the recording area has a defect. As an example of reproducing a user data packet composed of user data sectors A0 to A7 shown in FIG.
When it is found from the defect management information that the user data sectors A3 and A6 shown in (b) of the figure are respectively replaced by the spare area (replacement area) SA shown in (c) of the figure, User data sectors A0-A shown in b)
2 is reproduced, sector A3 is reproduced from the spare area SA shown in (c) of the same figure, user data sectors A4 and A5 shown in (b) of the same figure are reproduced again, and (c) of the same figure is shown. It is necessary to execute the processing of the step of reproducing the sector A6 from the spare area SA and again reproducing the user data sector A7 from the data area DA shown in FIG. Therefore, conventionally, when a defective area (defective sector) exists in a recording area so as to sandwich a non-defective area (non-defective sector), the defective area and the non-defective area sandwiched between the defective areas are collectively collected as a defective area. An information recording / reproducing apparatus has been proposed which suppresses a change in an area to be accessed (replacement source to replacement destination) at the time of data reproduction to reduce processing time due to replacement processing.

[0011]

However, in the above-described conventional information recording / reproducing apparatus, even the non-defective sector which is originally sandwiched between the defective sectors and which originally does not need the replacement process is replaced (the non-defective sector is replaced with the replacement area). Therefore, there is a problem in that the capacity used as a spare area in the recording area of the information recording medium is significantly increased, and the recording area of the information recording medium cannot be effectively utilized. The present invention has been made to solve the above-mentioned problems, and reduces the amount of replacement of non-defective areas as much as possible when replacing the defective areas together with the non-defective areas. The purpose is to suppress.

[0012]

In order to achieve the above object, the present invention provides the following information recording / reproducing apparatus (1) to (4). (1) In an information recording / reproducing apparatus that records and reproduces information on a recordable information recording medium, when recording information by dividing a recording area on the information recording medium into predetermined unit areas, An information recording / reproducing apparatus provided with replacement processing means for replacing the non-defective area when a defective area and a non-defective area are mixed in the unit area and the non-defective area is less than a predetermined amount. (2) In the information recording / reproducing apparatus as described in (1) above,
When the inside of the recording area is divided by a predetermined unit area consisting of a set of the recording area and the replacement area, an information recording / reproducing apparatus provided with means for confirming the mixture of the defective area and the non-defective area for each recording area. .

(3) In the information recording / reproducing apparatus as described in (1) above, the minimum information unit of the information at the time of the replacement process is different from the minimum information unit of the replacement information recorded at the time of the replacement process, and the minimum information unit of the above information is different. When the minimum information unit of the replacement information is larger than that of, the information recording / reproducing apparatus is provided with means for matching the predetermined unit area with the minimum information unit of the replacement information. (4) In an information recording / reproducing apparatus for recording and reproducing information on a recordable information recording medium, the recording area on the information recording medium is divided into predetermined unit areas each consisting of a set of a recording area and a spare area. Means for recording information and performing replacement processing on the non-defective area when the defective area and the non-defective area are mixed in the predetermined unit area, and only when the replacement destination is not divided into a plurality of areas An information recording / reproducing apparatus provided with.

Further, the following information recording / reproducing methods (5) to (9) are also provided. (5) When the information is recorded by dividing the recording area on the recordable information recording medium into predetermined unit areas, defective areas and non-defective areas are mixed in the predetermined unit areas, and the non-defective areas are located. An information recording / reproducing method of replacing the non-defective area in the case of a fixed amount or less. (6) In the information recording / reproducing method as described in (5) above,
An information recording / reproducing method for confirming that the defective area and the non-defective area are mixed in each recording area when the recording area is divided by a predetermined unit area including a set of a recording area and a replacement area.

(7) In the information recording / reproducing method as described in (5) above, the minimum information unit of information at the time of replacement processing and the minimum information unit of replacement information recorded at the time of replacement processing are different, and the minimum information unit of the above information is different. When the minimum information unit of the replacement information is larger than that of, the information recording / reproducing method for adjusting the predetermined unit area to the minimum information unit of the replacement information. (8) Information is recorded by dividing a recording area on a recordable information recording medium into a predetermined unit area including a set of a recording area and a replacement area, and a defective area and a non-defective area are mixed in the predetermined unit area. In this case, when performing the replacement process on the non-defective area, the replacement process is performed only when the replacement destination is not divided into a plurality of areas. (9) The information recording / reproducing method according to any one of (5) to (8) above, wherein the predetermined amount can be set to an arbitrary size.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an optical disk device according to an embodiment of the present invention. This optical disk device is realized by a microcomputer including a CPU, ROM, RAM, etc.
CD-RW that records and reproduces information on and from an optical disc (optical information recording medium) 1 that is a rewritable information recording medium such as a -RW disc or a DVD + RAM disc
This is an information recording / reproducing apparatus such as a drive, a DVD + RAM drive, etc., and is provided with a motor 2 for rotating the optical disc 1 at an arbitrary rotational speed at the time of recording / reproducing information, and a rotation control section 3 for controlling the motor 2.

Further, a pickup 4 for irradiating the optical disc 1 with an optical laser generated from a semiconductor element (for example, a laser diode), a laser drive circuit 9 for driving the optical laser of the pickup 4, and a radius of the optical disc 1 for the pickup 4. There is also provided an actuator control unit 5 for controlling the movement of the optical disc 1 and a signal control unit 6 for receiving the reflected light from the optical disc 1 and controlling the signal from the pickup 4. Further, the external interface 10 for transmitting and receiving data and the like to and from the host computer 11, which is a higher-level device such as a personal computer connected to the optical disk device, and the drive controller 7 are used as a temporary storage area for data storage and the like. In addition, it is provided with a buffer 8 which is a temporary storage place for data and the like, and a drive controller 7 which controls the entire optical disc apparatus. Furthermore, a non-volatile memory 12 for recording information peculiar to the optical disk device such as the disk ID of the optical disk 1 and the recording power value of laser light is also connected. The non-volatile memory 12 also stores a program for operating the drive controller 7.

That is, in the nonvolatile memory 12, when the drive controller 7 divides the recording area on the recordable information recording medium of (5) into predetermined unit areas to record information, the predetermined unit When a defective area and a non-defective area are mixed in the area and the non-defective area is equal to or less than a predetermined amount, an information recording / reproducing method of replacing the non-defective area with the defective area, and the above (6) In the information recording / reproducing method as in 5), when the recording area is divided into predetermined unit areas each including a set of a recording area and a replacement area, the defective area and the non-defective area are mixed for each recording area. In the information recording / reproducing method for confirming the above, and the information recording / reproducing method as described in (5) of (7) above, the minimum information unit of information at the time of replacement processing and the minimum information unit of replacement information recorded at the time of replacement processing. If the minimum information unit of the replacement information is larger than the minimum information unit of the above information, various programs for executing the information recording / reproducing method for adjusting the predetermined unit area to the minimum information unit of the replacement information are stored. Has been done.

Further, the recording area on the recordable information recording medium of the above (8) is divided into predetermined unit areas each consisting of a set of the recording area and the replacement area to record information, and a defect is recorded in the predetermined unit area. When the non-defective area is mixed with the defective area and the non-defective area is replaced with the defective area, the replacement processing is performed only when the non-defective area is not divided into a plurality of areas at the replacement destination. In the information recording / reproducing method as described in the above (5) to (8), various programs for executing the information recording / reproducing method that enables the predetermined amount to be set to an arbitrary size are also stored.

The drive controller 7 is
In the information recording / reproducing apparatus for recording / reproducing information on / from the recordable information recording medium of (1), when recording information by dividing the recording area on the information recording medium into predetermined unit areas, When a defective area and a non-defective area are mixed in the predetermined unit area and the non-defective area is equal to or less than a predetermined amount, the function of the replacement processing means for performing the replacement processing on the non-defective area together with the defective area; In the information recording / reproducing apparatus as described in (1) above, when the inside of the recording area is divided by a predetermined unit area consisting of a set of the recording area and the replacement area, the defective area and the non-recording area are formed in each recording area. It functions as a means for confirming the mixture of defective areas.

Further, in the information recording / reproducing apparatus as described in (1) of (3) above, the minimum information unit of the information at the time of the replacement processing is different from the minimum information unit of the replacement information recorded at the time of the replacement processing, and the above information is different. When the minimum information unit of the replacement information is larger than the minimum information unit of, the means for adjusting the predetermined unit area to the minimum information unit of the replacement information and the information for the recordable information recording medium of (4) above. In an information recording / reproducing apparatus for recording and reproducing information, information is recorded by dividing a recording area on the information recording medium into a predetermined unit area composed of a set of a recording area and a replacement area, and a defect is recorded in the predetermined unit area. When the non-defective area is mixed with the area and the non-defective area is replaced, the replacement processing is performed only when the replacement destination is not divided into a plurality of areas.

Next, the operation of the optical disk device according to claims 1 and 5 of the present invention will be described. Figure 2
Is the claim 1 of the present invention in this optical disk device.
It is a flowchart figure which shows the process concerning 5. Figure 3
FIG. 3 is a diagram showing a format example of a predetermined unit area in the recording area on the optical disc 1. Drive controller 7
Receives a data recording request from the host computer 11 via the external interface 10, the recording area on the optical disc 1 is divided into predetermined unit areas and data (information) is divided.
When recording data, for example, as shown in FIG. 3, data areas Area1 to Area6, which are small areas virtually divided into a program area in the recording area of the optical disc 1, are recorded.
Record the data in.

As shown in FIG. 2, steps (“S” in the figure)
1) indicates a non-defective sector (non-defective area) and a defective sector (defective area) in the data area (predetermined unit area).
If there is no defective sector, the process is terminated. If it is determined that the defective sector is mixed with the non-defective sector, the process proceeds to step 2 and the non-defective sector is set to a predetermined amount. It is judged whether or not it is less than or equal to a predetermined amount (X), and if it is less than or equal to a predetermined amount, this process is ended. .

In this way, it is possible to arrange the data that has not been replaced and the data that has been replaced in the recording area on the optical disc, to a certain extent, and it is possible to suppress the processing time during data reproduction. In addition, since the processing of collectively replacing the defective sectors and the non-defective sectors is not performed unconditionally, it is possible to suppress the usage amount of the replacement area, and it is possible to record more user data in the recording area of the optical disc. The area can be used effectively.

Next, when the recording area of the optical disc is already divided into at least one or more recording areas and spare areas, the recording areas and the spare areas are alternately arranged and the spare areas are replaced. Use the most recent spare area.
Here, when the size of the unit area of the divided recording area of the optical disc and the size of the unit area for confirming the mixture of the defective sector and the non-defective sector as described above are different, the process of replacing the mixed non-defective sector is complicated. become. Therefore, the functions according to claims 2 and 6 of the present invention solve the above-mentioned problems.

Next, the operation of the optical disk device according to claims 2 and 6 of the present invention will be described. Figure 4
Is the optical disk device according to claim 2 of the present invention.
It is a flowchart figure which shows the process concerning 6. When the drive controller 7 receives a data recording request from the host computer 11 via the external interface 10, the drive controller 7 divides the recording area on the optical disc 1 into a predetermined unit area including a set of a recording area and a spare area, and stores data (information). ) Is recorded, for example, in the data area in the recording area of the optical disc 1 (the DAx shown in FIG. 6B, the data area in the mount Rainier of the CD-RW system).

In step (indicated by "S" in the figure) 11, a non-defective sector (non-defective area) is set in the recording area (data area).
And whether there is a defective sector (defective area),
If there is no defective sector, this processing is terminated, and if it is judged that defective sectors are mixed with non-defective sectors, step 1
The procedure proceeds to step 2 to judge whether or not the defective sector and the non-defective sector are mixed in the recording area (data area) in the recording area. If they are not mixed, this processing is terminated, and if they are mixed, In step 13, it is determined whether or not the number of non-defective sectors is less than or equal to a preset predetermined amount. If the amount is not less than or equal to the predetermined amount (X), this process is terminated.
Then, the process proceeds to and the corresponding non-defective sector is replaced with the defective sector, and this process ends.

In this way, the recording area of the optical disc has already been divided into at least one or more recording areas and the replacement area, and when the replacement processing according to the above claims 1 and 5 is performed, it is determined that defective sectors are present. Since the area unit for confirming the mixture of non-defective sectors can be matched with the actual division unit, the replacement process can be easily performed.

Next, in the optical disc defect management system, when the minimum information unit of data that is replaced when a defect occurs and the minimum information unit of data that records replacement information at the time of replacement are different, generally The information unit is larger than the minimum information unit at the time of replacement, and the above-described process complicates the process of replacing mixed non-defective sectors. Therefore, the functions according to claims 3 and 7 of the present invention solve the above-mentioned problems.

Next, the operation of the optical disk device according to claims 3 and 7 of the present invention will be described. This process is almost the same as the process shown in FIG. 4, except that the minimum information unit of data during the replacement process and the minimum information unit of the replacement information recorded during the replacement process are different, When the minimum information unit of information is large, the difference is that the predetermined unit area is aligned with the minimum information unit of the replacement information. Upon receiving a data recording request from the host computer 11 via the external interface 10, the drive controller 7 divides the recording area on the optical disc 1 into predetermined unit areas to record data (information), and at the time of replacement processing. If the minimum information unit of the information and the minimum information unit of the replacement information recorded during the replacement process are different, and the minimum information unit of the replacement information is larger than the minimum information unit of the above information,
For example, the packets P1 to P136 shown in (c) of FIG.
Record the data in.

It is judged whether or not there is a defective sector (defective area) in the recording area (data area) together with a non-defective sector (non-defective area). If it is determined that the defective sectors are mixed, it is determined whether or not the defective sectors and the non-defective sectors are mixed in the recording area (packet) in the recording area. If they are not mixed, this process is terminated. If they are mixed, it is judged whether or not the non-defective sector is less than or equal to a preset predetermined amount, and if it is not less than or equal to the predetermined amount (X), this process is terminated, and if it is less than or equal to the predetermined amount, the non-defective sector and the corresponding non-defective sector are The sector is replaced, and this process ends.

In this way, the minimum information unit of data that is replaced when a defect occurs and the minimum information unit of data that records replacement information when it is replaced are different, and the minimum information unit at the time of recording is smaller than the minimum information unit at the time of replacement. If the information unit is large,
When performing the processing according to claims 1 and 5 of the present invention, it is possible to match the division unit to the minimum information unit at the time of actual recording, so that the processing can be performed easily.

Next, when the recording area of the optical disc 1 is already divided into at least one or more recording areas and replacement areas, and the recording areas and replacement areas are alternately arranged, the recording areas are replaced. The most recent replacement area is used for the data recording method of the optical disk device according to the process and the method according to claim 1 of the present invention, or when defective sectors exist so as to sandwich a non-defective sector in the recording area. In the data recording method in which the defective sectors and the non-defective sectors sandwiched between the defective sectors are collectively replaced as defective sectors, even if the mixed non-defective sectors are replaced, the data is divided and recorded at the replacement destination. . Therefore, the functions according to claims 4 and 8 of the present invention solve the above-mentioned problems.

Next, the operation of the optical disk device according to claims 4 and 8 of the present invention will be described. Figure 5
According to claim 4 of the present invention in this optical disk device.
It is a flowchart figure which shows the process concerning 8. When the drive controller 7 receives a data recording request from the host computer 11 via the external interface 10, the drive controller 7 divides the recording area on the optical disc 1 into a predetermined unit area including a set of a recording area and a spare area, and stores data (information). ) Is recorded, for example, in the data area in the recording area of the optical disc 1 (the DAx shown in FIG. 6B, the data area in the mount Rainier of the CD-RW system).

In step (indicated by "S" in the figure) 21, a non-defective sector (non-defective area) is set in the recording area (data area).
And whether there is a defective sector (defective area),
If there is no defective sector, this process is terminated, and if it is judged that defective sectors are mixed with non-defective sectors, step 2
The procedure proceeds to step 2 to judge whether or not the defective sector and the non-defective sector are mixed in the recording area (data area) in the recording area. If they are not mixed, this processing is terminated, and if they are mixed, In step 23, it is determined whether or not the non-defective sector is to be replaced. If it is not replaced, this process ends, and if it is replaced, the process proceeds to step 24. In order to determine whether or not to perform the replacement process in step 23, it is determined whether or not the number of non-defective sectors as described above is equal to or less than a preset predetermined amount, and if it is not equal to or less than the predetermined amount (X), the replacement process is not performed. It is preferable that the processing is determined to be completed and this processing is ended.

Further, it is judged whether or not the defective sector exists so as to sandwich the non-defective sector in the recording area, and if there is no defective sector, it is determined that the replacement process is not performed, and this process is terminated. Alternatively, it may be determined that the replacement process is to be performed, and the process may proceed to step 24. And step 24
When the non-defective sector is replaced, it is determined whether or not the replacement area is divided into a plurality of areas. This can be determined based on the capacity of the replacement area and the size of the non-defective sector. If it is divided, this process is ended. If it is not divided, the process proceeds to step 25, and the defective sector and the corresponding non-defective sector are replaced, and this process is finished. This processing is applied and executed when there are a plurality of sets of the recording area DAx and the replacement area SAx as shown in FIG. 6B.

In this way, when the recording area of the optical disk is already divided into at least one or more recording areas and the replacement area, the replacement is performed when the non-defective sectors mixed within a certain area are replaced. Since it is not divided into a plurality of areas in advance, it is possible to suppress the overhead at the time of data reproduction.

Next, in each of the above-mentioned processes, when defective sectors and non-defective sectors are mixed, the size of the non-defective area, which is a criterion for replacing non-defective sectors, can be arbitrarily set so that the degree of freedom can be increased. Will increase. Therefore, in the function according to claim 9 of the present invention, the predetermined amount (X), which is a condition for replacing the non-defective sector, is changeably stored in the non-volatile memory 12, and the setting change operation from the external host computer 11 is performed. Or on the optical disk device (not shown)
The drive controller 7 arbitrarily changes the value of the non-volatile memory 12 according to the operation by the setting key.
In this way, when the defective sector and the non-defective sector are mixed, the size (predetermined amount) of the non-defective sector, which is the criterion for replacing the non-defective sector, can be arbitrarily set and changed. The degree of freedom in processing is increased.

[0039]

As described above, according to the information recording / reproducing apparatus and the information recording / reproducing method of the present invention, the amount of replacement of the non-defective area can be reduced when the non-defective area is replaced together with the defective area. Since it is reduced as much as possible, it is possible to suppress the amount of use in the spare area.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an optical disc device according to an embodiment of the present invention.

FIG. 2 is a flow chart showing the processing according to claims 1 and 5 of the present invention in the optical disk device of this embodiment.

FIG. 3 is a diagram showing a format example of a predetermined unit area in the recording area on the optical disc 1 shown in FIG.

FIG. 4 is a flow chart showing the processing according to claims 2 and 6 of the present invention in the optical disk device of this embodiment.

FIG. 5 is a flow chart showing the processing according to claims 4 and 8 of the present invention in the optical disk device of this embodiment.

FIG. 6 is a diagram showing a disc format of a CD-RW disc.

FIG. 7 is a diagram for explaining replacement processing when a block in a recording area of a CD-RW disc has a defect.

[Explanation of symbols]

1: Optical disk 2: Motor 3: Rotation control unit 4: Pickup 5: Actuator control unit 6: Signal control unit 7: Drive controller 8: Buffer 9: Laser drive circuit 10: External interface 11: Host computer 12: Nonvolatile memory 20: Lead-In Area 21: Program Area 22: Lead-Out Area
a) 23: Replacement area (Spare Area: SA) 24: Recording area (Data Area: DA) 25: Packet (Packet: P) 26: Link block (Run Block) 27: Run-in block (Run Block) 28 : User data block (User Data B)
lock) 29: Run-out block
k) 30: Block

Claims (9)

[Claims] 1. An information recording / reproducing apparatus for recording and reproducing information on a recordable information recording medium, wherein when recording information by dividing a recording area on the information recording medium into predetermined unit areas, Information recording / reproducing characterized in that a replacement area is provided for replacing the non-defective area when the non-defective area is less than a predetermined amount when the non-defective area is mixed with the defective area within the predetermined unit area. apparatus. 2. The information recording / reproducing apparatus according to claim 1, wherein when the inside of the recording area is divided by a predetermined unit area including a set of a recording area and a replacement area, the defective area and the defective area are provided for each recording area. An information recording / reproducing apparatus provided with means for confirming the mixture of non-defective areas. 3. The information recording / reproducing apparatus according to claim 1, wherein a minimum information unit of information at the time of replacement processing and a minimum information unit of replacement information recorded at the time of replacement processing are different from each other, and are smaller than the minimum information unit of the information. An information recording / reproducing apparatus comprising means for adjusting the predetermined unit area to the minimum information unit of the replacement information when the minimum information unit of the replacement information is large. 4. An information recording / reproducing apparatus for recording / reproducing information on / from a recordable information recording medium, wherein the recording area on the information recording medium is a predetermined unit area composed of a set of a recording area and a replacement area. Information is divided and recorded, and when a defective area and a non-defective area are mixed in the predetermined unit area, when the non-defective area is replaced, the replacement processing is performed only when the replacement destination is not divided into a plurality of areas. An information recording / reproducing apparatus comprising means. 5. When recording information by dividing a recording area on a recordable information recording medium into predetermined unit areas, defective areas and non-defective areas are mixed in the predetermined unit areas, and the non-defective areas are An information recording / reproducing method, wherein the non-defective area is replaced if the amount is less than a predetermined amount. 6. The information recording / reproducing method according to claim 5, wherein when the inside of the recording area is divided into a predetermined unit area including a set of a recording area and a replacement area, the defective area and the defective area are provided for each recording area. An information recording / reproducing method characterized by confirming that non-defective areas are mixed. 7. The information recording / reproducing method according to claim 5, wherein the minimum information unit of the information at the time of the replacement process and the minimum information unit of the replacement information recorded at the time of the replacement process are different from each other, and are smaller than the minimum information unit of the information. When the minimum information unit of the replacement information is large, the predetermined unit area is adjusted to the minimum information unit of the replacement information. 8. A recording area on a recordable information recording medium is divided into predetermined unit areas each consisting of a set of a recording area and a spare area to record information, and a defective area and a non-defective area are recorded in the predetermined unit area. An information recording / reproducing method characterized in that when the non-defective area is subjected to the replacement processing in the case where the mixed areas are mixed, the replacement processing is carried out only when the replacement destination is not divided into a plurality of areas. 9. The information recording / reproducing method according to claim 5, wherein the predetermined amount can be set to an arbitrary size.