JP2000293948A - Medium and method for information recording and information recording and reproduction system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the information recording medium whose spare area can be expanded according to the generation frequency of a bad sector. SOLUTION: The information recording medium has a 1st spare area 102 including spare sectors to substitute for bad sectors, a defect management information area 101 for managing the substitution of the spare sectors for the bad sectors, and a volume space 100a where user data can be recorded. The volume space 100a is so constituted that a 2nd spare area 108 including spare sectors to substitute bad sectors can additionally be arranged. Position information indicating the position of the 2nd spare area 108 is recorded in the defect management information area 101.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention dynamically expands a spare area in accordance with the frequency of occurrence of defective sectors.
The present invention relates to an information recording medium, an information recording method, and an information recording / reproducing system capable of improving the reliability of data recording.

[0002]

2. Description of the Related Art An optical disk is an information recording medium having a sector structure. In recent years, the density and capacity of optical disks have been increasing, and it has become an important issue to ensure the reliability of optical disks.

Conventionally, there has been known a defect management method for managing a defective sector on an optical disk (that is, a sector in which data cannot be recorded / reproduced). A spare area is prepared on the optical disc in advance. If there is a defective sector on the optical disc, the defective sector is replaced with another sector in the spare area. Thereby, the reliability of the optical disk is ensured. Such a defect management method is 90 m
International Organization for Standardization of Optical Disks ISO / IEC1009
0.

Referring to FIGS. 12 and 13, 9
International Standards Organization ISO / IEC10 for 0mm optical discs
090 will be briefly described.

FIG. 12 shows the structure of a data recording area 800 of a conventional optical disk.

[0006] The data recording area 800 includes a plurality of sectors. Each of the plurality of sectors has a physical sector number (Physical Sector Number).
er; PSN).

The data recording area 800 includes a defect management information area 801, a spare area 802, and a volume space 80.
0a. The volume space 800a is located immediately after the spare area 802, and is defined as an area where user data can be recorded. Volume space 800
A logical sector number (hereinafter, referred to as LSN) is assigned to each of the sectors included in a.

[0008] The size of the spare area 802 is set in advance. In order to change the size of the spare area 802, it is necessary to change the data structure of the substitute information stored in the defect management information area 801 by using a special command by the physical format utility software. Hereinafter, this processing is referred to as initialization processing.

FIG. 13 shows the procedure of a conventional format process and data recording process. These processes are executed by the system controller and the optical disk drive. The optical disk drive is connected to a system controller. The system control device is, for example, a computer system.

The format process includes steps S901 to S903 shown in FIG. The data recording process
It includes steps S904 to S911 shown in FIG.
In FIG. 12, the numbers starting with S described with the arrows indicate the recording operation corresponding to the steps shown in FIG.

When the optical disk is inserted into the optical disk drive, the optical disk drive reads the defect management information area 801 and recognizes replacement information indicating that the defective sector has been replaced by a spare sector (step S9).
01).

The system control device executes a FAT / root directory creation process, and sends a Write command and data to the optical disk drive (step S902).

The optical disk drive recognizes the physical structure of the optical disk by using the format utility software, and records the data transmitted from the system controller from the beginning of the volume space 800a (step S903). As a result, the FAT area 803 and the root directory area 804 are stored in the volume space 8
00a is arranged from the beginning. Such a logical format process is similar to the format process of the MS-DOS format file system. As a result, the area from immediately after the root directory area 804 to the end of the optical disk is the file data space 8 managed by the FAT.
00b.

Hereinafter, data (F) is stored under the root directory.
The data recording process for recording ile-a) will be described.

The system control device stores data (File-
a) Execute a recording process, and transmit a Write command and data to the optical disk drive (step S9)
04). The location where the data is to be recorded is specified by the LSN.

The optical disk drive records the data transmitted from the system controller in the sector to which the designated LSN is assigned (step S905).
Whether or not the data has been correctly recorded is determined by reading the recorded data and comparing the read data with the transmitted data. If the data was not recorded correctly, the specified LS
The sector to which N is assigned is detected as a defective sector. Defective sectors are mainly generated by dust and dust adhering to an optical disc.

For example, assume that sector b (sector 814) shown in FIG. 12 is detected as a defective sector.
In this case, the optical disk drive device detects the defective sector 81
4 is recorded in the # 1 spare sector 810 of the spare area 802, and a # 1 replacement entry 832 indicating that the defective sector 814 has been replaced by the # 1 spare sector 810 is generated as defect management information. The replacement entry 832 is recorded in the defect management information area 801 (step S906).

The # 1 substitution entry 832 includes position information 833 indicating the position of a defective sector, and position information 834 indicating the position of a spare sector of the replacement destination. Location information 83
Each of 3, 834 is represented by a PSN.

When the system controller instructs the optical disc drive to read data from the defective sector 814, the optical disc drive refers to the # 1 substitute entry 832 to perform address conversion, and performs address conversion from the # 1 spare sector 810. Read data.

Thus, by replacing a defective sector with a spare sector, the reliability of the optical disk can be guaranteed. In addition, since such a replacement process of the defective sector is performed by the optical disk drive device, the system control device can always record data at a position corresponding to the designated LSN. As a result, the system control device can handle the optical disc as a defect-free medium.

Next, the system control device executes a root directory recording process and transmits a Write command and data to the optical disk drive (step S).
907).

The optical disk drive updates the root directory information recorded in the root directory area 804 according to the data transmitted from the system controller (step S908).

The system controller executes the FAT recording process, and sends a Write command and data to the optical disk drive (step S909).

The optical disk drive updates the FAT information recorded in the FAT area 803 according to the data transmitted from the system controller (step S91).
0). Thus, the data (File-a) is registered under the root directory.

The optical disk drive records the updated defect management information in the defect management information area 801. Such recording is performed when there is no data recording instruction from the system control device for several seconds.

[0026]

In the conventional defect management method described above, the size of the spare area is fixed. Therefore, even if there is a recordable unallocated area on the optical disk, data cannot be recorded on the optical disk if a defective sector occurs beyond the size of the spare area. In order to record data on the optical disk, it is necessary to change the size of the spare area by re-initializing the optical disk. In this case, since the assignment of the LSN changes over the entire volume space, before performing the initialization process,
Data recorded in the volume space had to be backed up to another medium.

In particular, when the optical disk is used in consumer equipment, there is a possibility that the user may handle the optical disk while eating or a child may touch the surface of the optical disk unexpectedly, which is expected by the manufacturer of the optical disk. As described above, a defective sector may occur.

The present invention has been made to solve the above-mentioned problem, and the reliability of data recording can be assured by dynamically expanding a spare area according to the frequency of occurrence of defective sectors. It is an object to provide an information recording medium, an information recording method, and an information recording / reproducing system.

[0029]

An information recording medium according to the present invention is an information recording medium including a plurality of sectors, a first spare area including a spare sector for replacing a defective sector among the plurality of sectors; A defect management information area for managing replacement of a defective sector with a spare sector; and a volume space capable of recording user data, wherein the volume space includes a second spare including a spare sector for replacing a defective sector among the plurality of sectors. An area can be additionally arranged, and position information indicating the position of the second spare area is recorded in the defect management information area, thereby achieving the above object.

[0030] The second spare area may be located in an area apart from the first spare area.

[0031] The second spare area may be arranged in an area continuous with the first spare area.

Each of the first spare area and the second spare area is assigned a physical sector number, and the physical sector number assigned to the first spare area is assigned to the second spare area. It may be smaller than the physical sector number.

The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector includes
The plurality of spare sectors may be replaced with one of the plurality of spare sectors in descending order of the physical sector number assigned to the plurality of spare sectors.

[0034] The second spare area may be expandable in a direction in which the physical sector number becomes smaller.

[0035] The second spare area may be located outside the volume space.

[0036] The second spare area may be located inside the volume space, and the position information indicating the position of the second spare area may be recorded in a basic file structure management area for managing a basic file structure. .

Another information recording medium according to the present invention is an information recording medium including a plurality of sectors, a first spare area including a spare sector for replacing a defective sector among the plurality of sectors, and a spare sector from the defective sector. A defect management information area for managing the replacement of the sector, and a volume space capable of recording user data, wherein the volume space additionally includes a second spare area including a spare sector for replacing a defective sector among the plurality of sectors. Information indicating the amount of spare available in the first spare area and information indicating the amount of spare available in the second spare area are recorded in the defect management information area. It may be.

[0038] The information on the amount of spare available in the first spare area includes a replacement entry indicating that the defective sector has been replaced by a spare sector in the first spare area, and is used in the second spare area. The information on the possible spare amount may include a size of the second spare area and a replacement entry indicating that the defective sector has been replaced by a spare sector in the second spare area.

The information on the amount of spare available in the first spare area includes a first full flag indicating whether or not there is no available spare sector in the first spare area. The information on the spare amount may include a second full flag indicating whether or not there is no available spare sector in the second spare area.

An information recording method according to the present invention is an information recording method for recording information on an information recording medium including a plurality of sectors, wherein the information recording medium includes a spare sector for replacing a defective sector among the plurality of sectors. A first spare area, a defect management information area for managing replacement of the defective sector with the spare sector, and a volume space in which user data can be recorded. The volume space includes a defective sector among the plurality of sectors. The information recording method is configured such that a second spare area including a spare sector to be replaced can be additionally arranged, and (a) acquiring information indicating a use state of the first spare area; b)
(C) determining whether to additionally arrange a second spare area including a spare sector to replace a defective sector among the plurality of sectors according to the information indicating the use state of the first spare area; In the case where the second spare area is additionally arranged, a step of setting a part of the volume space as the second spare area; and Recording in the information area, thereby achieving the above object.

In the defect management information area, a first full flag indicating whether there is no available spare sector in the first spare area is recorded, and in the step (a), the first full flag is referred to. The method may further include a step of determining whether there is no available spare sector in the first spare area.

In the defect management information area, an alternative entry indicating that the defective sector has been replaced by a spare sector in the first spare area is recorded, and the step (a) refers to the alternative entry. By doing
The method may include a step of determining whether there is no available spare sector in the first spare area.

The step (c) comprises: (c-1) reducing the size of the volume space;
2) securing an outer peripheral area following the reduced volume space as the second spare area.

[0044] The step (c) may include a step of securing a part of the logical volume space in the volume space as the second spare area.

In the step (c), after data recorded in a part of the logical volume space in the volume space is moved to another part of the logical volume space,
The method may further include securing the part of the logical volume space as the second spare area.

The step (d) may include a step of detecting some defective sectors in the volume space before recording information indicating the position of the second spare area in the defect management information area. Good.

[0047] The second spare area may be located in an area apart from the first spare area.

[0048] The second spare area may be arranged in an area continuous with the first spare area.

A physical sector number is assigned to each of the first spare area and the second spare area, and a physical sector number assigned to the first spare area is assigned to the second spare area. It may be smaller than the physical sector number.

The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector is
The plurality of spare sectors may be replaced with one of the plurality of spare sectors in descending order of the physical sector number assigned to the plurality of spare sectors.

[0051] The second spare area may be expandable in a direction in which the physical sector number decreases.

Another information recording method according to the present invention is an information recording method for recording information on an information recording medium including a plurality of sectors, wherein the information recording medium substitutes a defective sector among the plurality of sectors. A first spare area including a spare sector; a defect management information area for managing replacement of the defective sector with the spare sector; and a volume space in which user data can be recorded. A second spare area including a spare sector that replaces a sector is configured to be additionally arranged, and the information recording method includes: (a) acquiring information indicating a use state of the second spare area; ,
(B) determining whether to additionally arrange a second spare area including a spare sector that replaces a defective sector among the plurality of sectors according to the information indicating the use status of the second spare area; (C) when the second spare area is additionally arranged, a step of setting a part of the volume space as the second spare area; and (d) information indicating the position of the second spare area. Recording in the defect management information area, thereby achieving the above object.

In the defect management information area, a second full flag indicating whether or not there is no available spare sector in the second spare area is recorded. In the step (a), the second full flag is referred to. The method may further include a step of determining whether there is no available spare sector in the second spare area.

An alternative entry indicating that the defective sector has been replaced by a spare sector in the second spare area is recorded in the defect management information area, and the step (a) refers to the alternative entry. By doing
The method may include a step of determining whether or not there is no available spare sector in the second spare area.

The step (c) comprises: (c-1) reducing the size of the volume space;
2) securing an outer peripheral area following the reduced volume space as the second spare area.

[0056] The step (c) may include a step of securing a part of the logical volume space in the volume space as the second spare area.

In the step (c), after data recorded in a part of the logical volume space in the volume space is moved to another part of the logical volume space,
The method may further include securing the part of the logical volume space as the second spare area.

[0058] The step (d) may include a step of detecting a partial defective sector in the volume space before recording information indicating the position of the second spare area in the defect management information area. Good.

In the step (d), after information indicating the position of the second spare area is recorded in the defect management information area, a second information indicating whether there is no available spare sector in the second spare area is obtained. A step of resetting the full flag may be included.

[0060] The second spare area may be located in an area remote from the first spare area.

[0061] The second spare area may be arranged in an area continuous with the first spare area.

Each of the first spare area and the second spare area is assigned a physical sector number, and the physical sector number assigned to the first spare area is assigned to the second spare area. It may be smaller than the physical sector number.

The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector includes
The plurality of spare sectors may be replaced with one of the plurality of spare sectors in descending order of the physical sector number assigned to the plurality of spare sectors.

The second spare area may be expandable in a direction in which the physical sector number decreases.

An information recording / reproducing system according to the present invention is an information recording / reproducing system for an information recording medium including a plurality of sectors, wherein the information recording medium includes a spare sector for replacing a defective sector among the plurality of sectors. A first spare area, a defect management information area for managing replacement of the defective sector with the spare sector, and a volume space in which user data can be recorded. The volume space includes a defective sector among the plurality of sectors. The information recording / reproducing system is configured so that a second spare area including a spare sector to be replaced can be additionally arranged.
A spare area remaining amount detection unit for acquiring information indicating the use state of the spare area, and a second spare sector including a spare sector for replacing a defective sector among the plurality of sectors according to the information indicating the use state of the first spare area. A spare area extension determining unit that determines whether or not a spare area is additionally arranged; and when the second spare area is additionally arranged, a part of the volume space is used as the second spare area. A spare extension area allocating unit and a spare area allocating unit that records position information indicating the position of the second spare area in the defect management information area are provided, thereby achieving the above object.

In the defect management information area, a first full flag indicating whether or not there is no available spare sector in the first spare area is recorded. , It may be determined whether there is no available spare sector in the first spare area.

An alternative entry indicating that the defective sector has been replaced by a spare sector in the first spare area is recorded in the defect management information area. , It may be determined whether there is no available spare sector in the first spare area.

[0068] The spare extended area allocating unit may reduce the size of the volume space, and secure an outer peripheral area following the reduced volume space as the second spare area.

[0069] The spare extended area allocating unit may secure a part of the logical volume space in the volume space as the second spare area.

The spare extension area allocating unit moves the data recorded in a part of the logical volume space in the volume space to another part of the logical volume space, and then transfers the data of the logical volume space to the other part. May be secured as the second spare area.

[0071] The second spare area may be located in an area apart from the first spare area.

[0072] The second spare area may be arranged in an area continuous with the first spare area.

Each of the first spare area and the second spare area is assigned a physical sector number, and the physical sector number assigned to the first spare area is assigned to the second spare area. It may be smaller than the physical sector number.

The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector is
The plurality of spare sectors may be replaced with one of the plurality of spare sectors in descending order of the physical sector number assigned to the plurality of spare sectors.

[0075] The second spare area may be expandable in a direction in which the physical sector number becomes smaller.

The information recording / reproducing system includes a recording device for recording information on an information recording medium, and a control device for controlling the recording device. The information processing device may further include a spare remaining amount report unit that reports information indicating the usage status of the first spare area to the control device.

[0077] The information indicating the use state of the first spare area may include information indicating the remaining amount of the first spare area.

The information indicating the use status of the first spare area may include information indicating an error status in response to a data recording instruction.

Another information recording / reproducing system of the present invention is an information recording / reproducing system for an information recording medium including a plurality of sectors, wherein the information recording medium substitutes a defective sector among the plurality of sectors. 1st including spare sector
A spare area, a defect management information area for managing replacement of the defective sector with the spare sector, and a volume space capable of recording user data, wherein the volume space is a spare sector for replacing a defective sector among the plurality of sectors. The information recording / reproducing system is configured to be able to additionally arrange a second spare area including: a spare area remaining amount detection unit that obtains information indicating a use state of the second spare area; A spare area extension determining unit that determines whether to additionally arrange a second spare area including a spare sector that replaces a defective sector among the plurality of sectors according to information indicating a use state of the second spare area; and ,
In a case where the second spare area is additionally arranged, a spare extended area allocating unit that uses a part of the volume space as the second spare area, and position information indicating a position of the second spare area is stored in the defective area. A spare area allocating unit for recording in the management information area, whereby the object is achieved.

In the defect management information area, a second full flag indicating whether or not there is no available spare sector in the second spare area is recorded. , It may be determined whether there is no available spare sector in the second spare area.

An alternative entry indicating that the defective sector has been replaced by a spare sector in the second spare area is recorded in the defect management information area. , It may be determined whether there is no available spare sector in the second spare area.

The spare extended area allocating unit may reduce the size of the volume space, and secure an outer peripheral area following the reduced volume space as the second spare area.

[0083] The spare extended area allocating unit may secure a part of the logical volume space in the volume space as the second spare area.

The spare extension area allocating unit moves the data recorded in a part of the logical volume space in the volume space to another part of the logical volume space, and then transfers the data of the logical volume space to the other part. May be secured as the second spare area.

The spare area allocating section, after recording information indicating the position of the second spare area in the defect management information area, indicates whether or not there is no available spare sector in the second spare area. The full flag may be reset.

[0086] The second spare area may be arranged in an area apart from the first spare area.

[0087] The second spare area may be arranged in an area continuous with the first spare area.

Each of the first spare area and the second spare area is assigned a physical sector number, and the physical sector number assigned to the first spare area is assigned to the second spare area. It may be smaller than the physical sector number.

The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector is
The plurality of spare sectors may be replaced with one of the plurality of spare sectors in descending order of the physical sector number assigned to the plurality of spare sectors.

The second spare area may be expandable in a direction in which the physical sector number decreases.

The information recording / reproducing system includes a recording device for recording information on an information recording medium, and a control device for controlling the recording device. The information processing device may further include a spare remaining amount report unit that reports the information indicating the use state of the second spare area to the control device.

The information indicating the use status of the second spare area may include information indicating the remaining amount of the second spare area.

The information indicating the use status of the second spare area may include information indicating an error status in response to a data recording instruction.

[0094]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An information recording medium according to the present invention has a first spare area including a spare sector for replacing a defective sector,
It includes a defect management information area for managing replacement of a defective sector with a spare sector, and a volume space in which user data can be recorded.

The volume space is configured so that a second spare area including a spare sector to replace a defective sector can be additionally arranged. When all the spare sectors included in the first spare area prepared in advance have been consumed by the replacement processing of the defective sector, a part of the volume space can be used as the second spare area. As described above, by additionally arranging the second spare area as necessary, even if a defective sector occurs more than expected by the manufacturer of the optical disk, it is possible to guarantee defect free of the optical disk. .

The position information indicating the position of the second spare area is:
It is recorded in the defect management information area.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The first embodiment is an embodiment in which the second spare area is arranged inside the volume space by updating the file structure. Embodiment 2 is an embodiment in which the second spare area is arranged outside the volume space by updating the volume structure and the file structure.

(Embodiment 1) FIG. 2 shows the configuration of an information recording / reproducing system 1a according to an embodiment of the present invention. The information recording / reproducing system 1a records information on an information recording medium,
The information recorded on the information recording medium is reproduced. The information recording medium may be any type of rewritable optical disc such as a DVD-RAM.

In the following description, the information recording medium is ECM
It is assumed that the optical disk is a rewritable optical disk capable of recording and reproducing a file managed using the file structure defined by the A167 standard in sector units. Hereinafter, such a rewritable optical disk is abbreviated as an optical disk.

As shown in FIG. 2, the information recording / reproducing system 1a includes a system control device 200 and an optical disk drive device 204. The system controller 200 and the optical disk drive 204 are connected to the I / O bus 203
Connected to each other.

The system control unit 200 includes a system control unit 201 for processing file structure information and a memory circuit 2
02. The system control unit 201 can be realized by, for example, a microprocessor including a control program and an operation memory.

The system control unit 201 executes a file structure processing unit 211 for executing a bitmap process for managing an unallocated area in the logical volume space, and checks whether an area to be reserved as an additional spare area is already used. Spare area detection unit 212 for checking
And a file transfer processing unit 213 that secures an additional spare area by moving a file recorded in an area to be secured as an additional spare area to another area, and registers the additional spare area in a file structure. A spare extended area allocating unit 214, a spare area extension determining unit 215 that determines whether to extend the spare area based on the remaining amount of the spare area, and a defective sector detected during data recording from the execution result of the Write command. A command status processing unit 216 that recognizes whether or not the
A spare extension area instructing unit 217 for instructing the optical disc drive 204 of the extended spare area to update the defect management information.

The memory circuit 202 has a file structure memory 221, a bit map memory 222, a data memory 223, and a spare area for storing information indicating the remaining capacity of the spare area and information indicating the position of the spare area. And an information memory 224.

The optical disk drive device 204 includes a drive control unit 205 for performing defect management processing and data recording / reproduction control for the optical disk, and a memory circuit 206. The drive control unit 205 can be realized by, for example, a microprocessor including a control program and an operation memory.

The drive control unit 205 includes a spare remaining amount report unit 231 that reports the size of a substitutable area in the spare area, and a spare area allocation unit that updates defect management information in accordance with a spare area extension instruction from the system control device 200. A spare area remaining amount detecting section 233 for detecting a replaceable area in the spare area from a substitute entry of the defect management information area, and allocating a defective sector detected at the time of data recording to a spare sector of the spare area, Defective sector processing unit 234 for recording data
And a data recording control unit 235 for controlling the recording of data on the optical disk, and a data reproduction control unit 236 for controlling the reproduction of data from the optical disk.

The memory circuit 206 includes a defect management information memory 241 for storing defect management information, and a data memory 2
42.

Hereinafter, the formatting process for the optical disc of the present invention will be described with reference to FIGS. 1, 2, 3 and 4.

FIG. 4 shows the structure of the data recording area 100 of the optical disk after the format processing.

The data recording area 100 includes a plurality of sectors. Each of the plurality of sectors has a PSN
Is assigned.

The data recording area 100 includes a defect management information area 101, a first spare area 102, and a volume space 100a.

In the defect management information area 101, defect management information 130 is recorded. The defect management information 130 is SD
SDL descriptor 131 for recognizing L information, spare area full flag 132, position information 133 indicating the position of second spare area 108, and # 1 substitution entry 134 indicating that a defective sector has been replaced by a spare sector And

The spare area full flag 132 includes a first full flag 138 for the first spare area 102 and a second full flag 139 for the second spare area 108. The first full flag 138 indicates whether there is no available spare sector in the first spare area 102. The second full flag 139 indicates that there is an available spare sector in the second spare area 108 when reset, and indicates the second full flag 139 when it is set.
This indicates that there is no available spare sector in the spare area 108 or that the second spare area 108 is not arranged.

Hereinafter, the position information 133 indicating the position of the second spare area 108 is referred to as “the position information 133 of the second spare area”.
Abbreviated. The position information 133 of the second spare area includes, for example, the PS of the first sector included in the second spare area 108.
N and the PS of the last sector included in the second spare area 108
N.

In the example shown in FIG. 4, the second spare area has not been arranged on data recording area 100 yet. In this case, the position information 133 of the second spare area has a value (for example, a NULL value) indicating that “the second spare area has not been arranged on the data recording area 100 yet”.

In the example shown in FIG.
The number of alternative entries included in 0 is one. The defect management information 130 may include a number of replacement entries equal to the number of spare sectors replacing the defective sector. Therefore, when the number of spare sectors replacing the defective sector is N, the defect management information 130 includes # 1 to #N substitution entries. Here, N is an arbitrary integer. # 1 to #N
Each of the replacement entries includes position information 136 indicating the position of the defective sector and position information 137 indicating the position of a spare sector replacing the defective sector. Location information 13
Each of 6, 137 is represented by, for example, PSN.

The size of the first spare area 102 is fixed. In the example shown in FIG. 4, the first spare area 10
2 includes three spare sectors 110 to 112 from # 1 spare sector to # 3 spare sector. Spare sector 110
To 112 are used to replace defective sectors. The number of spare sectors included in the first spare area 102 is not limited to three. First spare area 102
May include any number of spare sectors.

The volume space 100a is located immediately after the first spare area 102 and is defined as an area where user data can be recorded. Volume space 10
A logical sector number is assigned to each of the sectors included in 0a. The volume space 100a includes a volume structure area 103 and a logical volume space 100.
b and the volume structure area 109.

FIG. 3 shows the procedure of the format process.
The formatting process is executed by the system control device 200 and the optical disk drive device 204.

The formatting process includes steps S301 to S307 shown in FIG. In FIG. 4, the numbers starting with S described with the arrows indicate the recording operation corresponding to the steps shown in FIG.

The optical disk is an optical disk drive 20
4, the defect management information 130 is read from the defect management information area 101. The defect management information 130 includes
It is stored in the defect management information memory 241.

The defect management information 130 stored in the defect management information memory 241 is referred to by the spare remaining amount reporting unit 231 and the spare area remaining amount detecting unit 233 as described later.

The spare area remaining amount detecting section 233 recognizes the position information of the first and second spare areas and the use status of the first and second spare areas (step S301). The usage status of each spare area is, for example, determined in the defect management information area 10.
Address information (eg, physical sector number) of the smallest spare sector among the alternative entries recorded in No. 1
By searching for an alternative entry with

The file structure processing section 211 obtains GetSpare Info to inquire about spare area information.
A command is transmitted to the optical disk drive device 204 (step S302).

The spare remaining amount report unit 231 reports spare area information to the system control device 200 based on the defect management information 130 stored in the defect management information memory 241 (step S303). The spare area information includes position information 133 indicating the position of the second spare area. The spare area information is stored in the spare area information memory 224.

The file structure processing unit 211 executes a volume structure / basic file structure creation process, and
Commands and data are transferred to the optical disk drive 204
(Step S304). The data is temporarily stored in the file structure memory 221 and then transferred from the file structure memory 221 to the data memory 242.

The data recording control unit 235 stores the data stored in the data memory 242 in the volume space 100a.
(That is, the sector to which LSN: 0 is assigned) (step S305). As a result, the volume structure area 103 and the basic file structure area 1
04 is arranged from the beginning of the volume space 100a.

Although not shown in FIG. 4, the volume structure area 103 has a starting point volume descriptor pointer,
A volume descriptor sequence, a file set descriptor, a file entry of a stream directory, and a stream directory are recorded.

The basic file structure area 104 includes a space bitmap area 113 and a file entry area 11
4, a root directory area 115, and a file entry area 116.

In the space bitmap area 113, a space bitmap is recorded. The space bitmap is a bit string indicating the unallocated status of each sector in the logical volume space 100b. By referring to the space bitmap, the usage status of each sector in the logical volume space 100b can be checked.

In the file entry area 114, position information and management information of the root directory area 115 are recorded.

In the root directory area 115, the names of files arranged under the root directory and the position information of the file entry of each file are recorded.

In the file entry area 116, a file entry specified from the system stream directory is recorded. The file entry manages stream position information of the second spare area registered in the system stream directory. This file entry includes a descriptor tag 141 for identifying the file entry, a file attribute 142, and position information 143 indicating the position of the second spare area 108.

Hereinafter, the position information 143 indicating the position of the second spare area 108 is referred to as “the position information 143 of the second spare area”.
Abbreviated. The position information 143 of the second spare area includes, for example, the LS of the first sector included in the second spare area 108.
N and the size of the second spare area 108.

In the formatting process, information equivalent to the position information 133 of the second spare area included in the defect management information 130 is recorded in the file entry area 116 as the position information 143 of the second spare area. In the example shown in FIG. 4, the position information 133 of the second spare area has a NULL value as described above. Therefore, the position information 143 of the second spare area also has a NULL value.

Whether the data transmitted from the system control device 200 has been correctly recorded in the volume structure area 103 and the basic file structure area 104 depends on whether the recorded data is read out and the read data and the transmitted data. (That is, data stored in the data memory 242).
Such a determination is made by the defective sector processing unit 234.

For example, if the data transmitted from the system control device 200 is not correctly recorded in the root directory area 115,
Are detected as defective sectors. In this case, the defective sector processing unit 234 sets the root directory area 115 to the first
Replace with the spare sector having the largest address among the available spare sectors included in the spare area 102 (that is, the # 1 spare sector 112). as a result,
Data to be recorded in the root directory area 115 is recorded in the # 1 spare sector 112 of the first spare area 102. Further, the defective sector processing unit 234 generates a # 1 replacement entry 134 indicating that the root directory area 115 has been replaced by the # 1 spare sector 112, and
The # 1 substitution entry 134 is stored in the defect management information memory 241.
(Step S306).

The defective sector processing section 234 updates the updated defect management information 1 stored in the defect management information memory 241.
30 is recorded in the defect management information area 101 (step S
307). Such recording is performed immediately after step S306 or when there is no data recording instruction from the system control device 200 for a predetermined time (for example, 5 seconds).

As described above, in the format processing of the optical disk, the second information recorded in the defect management information area 101
Information equivalent to the position information 133 of the spare area is recorded in the basic file structure area 104 as information information 143 of the second spare area. By performing the above-described format processing on a used optical disc, the used optical disc can be reused. This is because the information of the second spare area is stored in the defect management information area 101 even if all the information in the volume space 100a has been erased.

The position information 143 of the second spare area
Are managed by the system controller 200, and the position information 133 of the second spare area is managed by the optical disk drive 204. These location information 143,
133 must always be matched. These information 14
A countermeasure method in the case where the numbers 3 and 133 do not match and a method of matching the position information 143 and 133 will be described later.

The data recording process for recording a file named File-a under the root directory of the formatted optical disk will be described below with reference to FIGS. 1, 2 and 5.

FIG. 1 shows the structure of the data recording area 100 of the optical disk after the data recording processing.

FIG. 5 shows the procedure of the data recording process. The data recording process is executed by the system control device 200 and the optical disk drive device 204.

The data recording process includes steps S401 to S417 shown in FIG. In FIG. 1, numbers starting with S described with arrows indicate recording operations corresponding to the steps shown in FIG.

The optical disk is an optical disk drive 20
4, the same defect management information as in the formatting process is executed as a startup process of the optical disc drive 204 (step S401).

The file structure processing section 211 transmits a Read command to the optical disk drive 204 as a start-up process of the system control device 200 (step S4).
02).

The data reproduction control unit 236 reproduces the volume structure area 103 and the basic file structure area 104 in accordance with the address specified by the Read command, and stores the reproduced data in the file structure memory 221.
(Step S403).

The file structure processing section 211 analyzes the volume structure and the basic file structure based on the data transferred to the file structure memory 221. As a result, the file structure processing unit 211 recognizes the logical volume space 100a based on the data reproduced from the volume structure area 103, and
3 based on the data reproduced from 3
Of the root directory area 11
5, the directory structure is recognized based on the data reproduced from the file entry area 116, and the position information 143 of the second spare area is recognized based on the data reproduced from the file entry area 116 (step S402).

[0149] The file structure processing section 211 stores the File-
The data of the file having the name "a" is created, and the data is stored in the data memory 223. In addition, the file structure processing unit 211 creates data of the file entry and stores the data in the file structure memory 221. The file structure processing unit 211 transmits the Write command and each data to the optical disk drive device 204 (Step S404). The Write command is used to instruct the optical disc drive 204 to record each data at the address of the unallocated area 107 recognized in step S402.

The data stored in the data memory 223 and the data stored in the file structure memory 221 are transferred to the data memory 242. The data recording control unit 235 stores the data transferred to the data memory 242 in the data area 105 and the file structure area 1 according to the address specified by the Write command.
06 (step S405).

The defective sector processing section 234 performs an alternative process in the same manner as the format process described above. For example, assume that sector b (sector 118) shown in FIG. 1 has been detected as a defective sector. In this case, the defective sector processing unit 234 stores the data to be recorded in the defective sector 118 in the # 2 spare sector 1 of the first spare area 102.
11 and the defective sector 118 is # 2 spare sector 1
A # 2 substitute entry 135 indicating that the entry has been replaced with the "11" is generated, and the # 2 substitute entry 135 is stored in the defect management information memory 241 (step S406).

The file (Fil) under the root directory
In order to register ea), it is necessary to update data recorded in the root directory area 115.
The file structure processing unit 211 transmits the Write command and the data to the optical disk drive device 204 (Step S407).

The data recording control unit 235 refers to the # 1 substitute entry 134 and sets the address of the root directory area 115 specified by the Write command to # 1.
The data is converted to the address of the spare sector 112, and the data transmitted from the system controller 200 is replaced with the # 1 spare sector 1.
12 (step S408).

The spare area extension determining unit 215 determines whether the first spare area 1
02 is determined to be necessary. There are various methods for this determination. Details of those various methods will be described later with reference to FIGS.

Here, an example of the determination method will be described. For example, the spare area extension determination unit 215
Event Status Notification
A command is transmitted to the optical disk drive 204.
This command is used to inquire about the usage status of the first spare area 102. In response to this inquiry, if the optical disk drive device 204 reports shortage information indicating that the remaining amount of the first spare area 102 is smaller than a predetermined size (for example, 1 MB), the spare area extension determining unit 215 determines Then, it is determined that the first spare area 102 needs to be extended (step S409).

In response to the command transmitted from the system control device 200 in step S 409, the spare area remaining amount detection unit 233 performs the first spare operation based on the information of the substitute entry stored in the defect management information memory 241. The remaining amount of the area 102 (for example, the number of replaceable spare sectors in the first spare area 102) is calculated, and if the remaining amount is smaller than a predetermined size, the shortage information is reported to the system control device 200. It instructs the spare remaining amount report unit 231. The spare remaining amount reporting unit 231 reports the lack information to the system control device 200 (step S4).
10).

In the example shown in FIG.
A defective sector 118 is detected when recording data on the
# 2 spare sector 1 to replace defective sector 118
11 are used. Therefore, the first spare area 102
Spare sector that can be replaced in # 3 spare sector 1
10 only. In this state, if one defective sector occurs, the remaining capacity of the first spare area 102 is exhausted, and further replacement processing cannot be performed. Therefore, the spare remaining amount reporting unit 2
31 reports the shortage information to the system control device 200.

In order to extend the first spare area 102, the file entry area 116, the second spare area 10
It is necessary to update the position information 133 indicating the position of No. 8 and the space bitmap area 113.

The system control device 200 recognizes the unallocated area 107 based on the data reproduced from the space bitmap area 113, and allocates an area to be reserved as an additional spare area (ie, the second spare area 108). Area). The system control device 200 updates the data stored in the file structure memory 221 in order to register the spare area to be extended in the file entry area 116, and the sector of the area where the second spare area 108 is allocated is already allocated. The data stored in the bitmap memory 222 is updated so that

The system controller 200 transmits the Write command and the data for the file entry area 116 stored in the file structure memory 221 to the optical disk drive 204 (step S41).
1).

The optical disk drive 204 updates the file entry area 116 by recording the data transmitted from the system control apparatus 200 in the file entry area 116 (step S412).

[0162] The system control device 200
Spare command and position information 1 of second spare area
The data for updating 33 is transmitted to the optical disk drive device 204 (step S413).

The optical disk drive 204 updates the position information 133 of the second spare area stored in the defect management information memory 241 based on the data transmitted from the system controller 200 (step S41).
4).

By the processing in steps S 412 and S 414, the second spare area 108 becomes effective as a spare area added in the optical disk drive 204. In the example shown in FIG. 1, the second spare area 108
It has # 4 spare sectors 122 to # 6 spare sectors 120. The number of spare sectors included in the second spare area 108 is not limited to three. Second spare area 108 may include any number of spare sectors.

The file structure processing section 211 transmits the data for the space bitmap area 113 stored in the file structure memory 221 to the optical disk drive 204 (step S415).

The data recording control unit 235 updates the space bit map area 113 by recording the data transmitted from the system control device 200 in the space bit map area 113 (step S416).

The defective sector processing section 234 performs the defect management information memory 241 by the method described in the example of the format processing.
Is recorded in the defect management information area 101 (step S417).

As described above, in the data recording process of recording a file on the optical disk, the first spare area 102 is expanded based on the use state of the first spare area 102 (that is, the second spare area 108 is additionally added). Placed). As a result, the reliability of data recording can be improved without performing the initialization process.

When a file is recorded on the optical disc, the file structure processing section 211 may determine the recordable position of data in order from the sector having the smallest LSN.
As described above, by preferentially recording data from the inner circumference side of the optical disc, it becomes difficult to record data in the area for expanding the second spare area. Therefore, the spare area can be easily expanded without moving a file. can do.

In the above-described embodiment, the optical disk including the first spare area has been described. However, the present invention can be applied to an optical disk having no first spare area. For example, if there is no defective sector, the second
Instead of arranging a spare area, a second spare area may be additionally arranged when a defective sector occurs. The same effect as in the above-described embodiment can be obtained by such a defect management method.

Next, FIG. 1, FIG. 2 and FIG.
A method of determining whether the first spare area 102 needs to be expanded will be described in detail with reference to FIG. Note that this method can be applied to a case where it is determined whether or not the second spare area 108 needs to be extended.

FIGS. 6A to 6C show the first spare area 1.
12 is a protocol chart showing a procedure of a process for determining whether or not it is necessary to extend No. 02. This processing is executed by the optical disk drive device 204 and the system control device 200.

FIG. 6A shows a process when an optical disk is inserted into the optical disk drive device 204.

The optical disk is an optical disk drive 20
4, the file structure processing unit 211 reproduces the volume structure area 103 and the basic file structure area 104 as described above, and transmits the reproduced data to the file structure memory 221. An instruction is given to the reproduction control unit 236 (step S402 in FIG. 5).

The file structure processing section 211 analyzes the basic file structure based on the data transferred to the file structure memory 221. As a result, the file structure processing unit 211 calculates the size of the recordable area in the logical volume space 100b based on the data reproduced from the space bitmap area 113. The size of this area is calculated, for example, by summing the number of sectors of the unallocated area 107. The calculation result is stored in the spare area information memory 224.

[0176] The file structure processing section 211 inquires about the remaining amount of the first spare area 102, so that Get Spa
re Info command to the optical disk drive 20
4 (step S601).

The spare area remaining amount detection unit 233 calculates the remaining amount of the first spare area 102 (for example, the number of replaceable spare sectors in the first spare area 102) by the method described in the format processing, and Report section 231
Reports the calculation result to the system control device 200 (step S602). Information indicating the remaining amount of the first spare area 102 is stored in the spare area information memory 224.

The spare area extension determining unit 215 calculates the ratio (A / B) of the remaining amount (A) of the first spare area 102 to the size (B) of the recordable area in the logical volume space 100a, and calculates the ratio. If (A / B) is smaller than a predetermined ratio (for example, 0.5%), it is determined that the first spare area 102 should be extended (step S603).

The determination process shown in FIG. 6A is performed when an optical disk is inserted, before recording data. This determination process has a feature that the procedure of the determination process is simple and that the determination process is easy to implement.

FIG. 6B shows the processing at the time of file recording. In the process shown in FIG. 6B, when recording a file on an optical disc, prior to recording the file,
It is determined whether the first spare area 102 needs to be extended. Such a determination is made based on the size of the data to be recorded and the remaining amount of the first spare area 102.

The file structure processing unit 211 stores the data to be recorded on the optical disk in the data memory 223 and calculates the size of the data. The calculation result is stored in the spare area information memory 224.

The file structure processing unit 211 inquires about the use status of the first spare area 102 and obtains Get E
A vent Status Notification command is transmitted to the optical disk drive device 204 (step S604).

The spare area remaining amount detection unit 233 calculates the remaining amount of the first spare area 102 by the method described in the format processing. When the remaining amount of the first spare area 102 is smaller than a predetermined size (for example, 1 MB), the spare remaining amount reporting unit 231 sends shortage information indicating that the first spare area 102 is insufficient. (Step S605). The shortage information is stored in the spare area information memory 224.

The spare area extension determining unit 215 determines whether to extend the first spare area 102 based on the size of data to be recorded and the shortage information (step S).
606). For example, when the size of the data to be recorded is larger than the remaining capacity of the first spare area 102, the spare area extension determining unit 215 determines that the first spare area 102 should be extended.

The determination processing shown in FIG. 6B is based on the assumption that the frequency of occurrence of defective sectors is statistically substantially constant because a spare area corresponding to the size of the file to be recorded can be secured. It has the feature that it is possible to reasonably guarantee data recording.

FIG. 6C shows the processing at the time of data transfer.

When a file is recorded on an optical disk, the data of the file is divided into a plurality of data parts. For example, when data of 1 MB size is recorded on an optical disc, the data is divided into a plurality of data portions every 32 kB.

Wr for each of a plurality of data portions
An item command is issued. As a result, each of the plurality of data portions is transferred from the system control device 200 to the optical disk drive device 204.

In the process shown in FIG. 6C, every time the data portion is transferred, it is determined whether or not the first spare area 102 should be expanded.

The file structure processing section 211 transmits a Write command to each of the plurality of data portions to the optical disk drive device 204 (step S60).
7).

The data recording control unit 235 records the data portion transmitted from the system control unit 200 in a predetermined sector, and when a defective sector is detected, the defective sector processing unit 234 performs a replacement process for the defective sector. Do.

When the recording process of the plurality of data portions is completed, the spare remaining amount reporting unit 231 reports Status information indicating the execution result of the Write command to the system control device 200 (step S608). Stat
The us information includes information indicating the number of defective sectors generated during data transfer.

The command status processing section 216 receives the status information from the optical disk drive device 204 and stores information indicating the number of defective sectors generated during data transfer in the spare area information memory 224. The spare area extension determining unit 215 stores the spare area information memory 22
4 to determine whether a defective sector has occurred during data transfer. If a defective sector has occurred, the first spare area 102 is extended by the number of defective sectors. (Step S6)
09).

The determination process shown in FIG. 6C has a feature that the recordable area of the optical disk can be used effectively. This is because the spare area can be expanded every time a defective sector is detected, so that the size of the area allocated as the spare area can be reduced.

In the above-described determination process, the format in which spare spare amount reporting section 231 reports the remaining amount of spare area to system control device 200 can take any format. For example, the remaining amount of the spare area may be represented by a flag format or a remaining value format.

Next, referring to FIGS. 1, 2 and 7,
A method for expanding the first spare area 102 and the second spare area 108 will be described in detail.

FIG. 7 shows the first spare area 102 and the second spare area 102.
5 is a protocol chart showing a procedure of processing for expanding a spare area 108. This processing is executed by the optical disk drive device 204 and the system control device 200.

The spare area extension judging section 215 makes the first
If it is determined that the spare area 102 (or the second spare area 108) should be extended, the spare extended area detection unit 212 determines the position of the second spare area stored in the file structure memory 221. An area reserved as an additional spare area is determined based on the information 143 (step S701).

When the second spare area 108 is allocated for the first time, the second spare area 108 can be allocated to an arbitrary area in the logical volume space 100b. However, when recording continuous data having a large file size such as audio video data (AV data) on an optical disc, it is necessary to secure a continuous unallocated area 107 wider. Therefore, the second spare area 1
When 08 is assigned for the first time, it is desirable that the second spare area 108 be assigned from the end of the logical volume space 100a.

Spare sectors included in second spare area 108 are used in order from a spare sector to which a large LSN is assigned to a spare sector to which a small LSN is assigned. That is, defective sectors are replaced with spare sectors in descending order of the LSN assigned to the spare sector.

When expanding the second spare area 108, the second spare area 108 is expanded in the direction in which the LSN becomes smaller. When the second spare area 108 is extended, the area reserved as an additional spare area may be an area that is continuous with the second spare area 108 or an area that is distant from the second spare area 108. There may be.

The file structure processing section 211 determines whether or not the area to be reserved as an additional spare area is unallocated based on the space bitmap information stored in the bitmap memory 222 (step S702). ). If not, the process proceeds to step S704. If not, the process proceeds to step S704.
The process proceeds to step S704 via step S703. This is because if the area to be reserved as an additional spare area is not in the unallocated state (that is, data is already recorded in that area), the data is moved to another location, and then This is because the area needs to be an additional spare area.

The file transfer processing section 213 executes a file transfer process (step S703). That is, the file transfer processing unit 213 checks all file structures on the optical disc and specifies data recorded in the area. Next, the file movement processing unit 213 uses the space bitmap information to search for an area in which data already recorded can be moved to an area to be reserved as an additional spare area, In step S703, the data is moved according to the attribute, and the information of the file structure that manages the moved data is updated. In this way, an additional spare area is reserved.

Although not shown in FIG. 7, the spare extended area allocating section 214 checks the optical disk drive 204 so as to check whether a defective sector exists in the area to be secured as an additional spare area. To instruct. If there is a defective sector in that area, the spare extended area allocating section 214 instructs the spare extended area detecting section 212 to increase the size of the additional spare area, and returns the control of the process to step S701. Thus, the process
The processing is executed again from step S701.

If there is no defective sector in the area to be reserved as an additional spare area, spare spare area allocating section 214 updates the write command and file entry area 116 stored in file structure memory 221. Is transmitted to the optical disk drive device 204 (step S704).

The data recording control section 235 records the data transmitted from the system control device 200 in the file entry area 116 (Step S705). as a result,
The position information 143 of the second spare area recorded in the file entry area 116 is updated.

The spare extension area designating section 217 has
Instruct to expand the spare area by using the c Spare command. Specifically, the spare extension area designating unit 2
17 transmits an Alloc Spare command and data for updating the position information 133 of the second spare area to the optical disk drive device 204 (step S7).
06).

The data recording control unit 235 updates the second spare area position information 133 stored in the defect management information memory 241 based on the data transmitted from the system control device 200 (step S707).

As described above, when any data is recorded in the area to be secured as an additional spare area, the information of the file structure is analyzed to determine the area to be secured as the additional spare area. The recorded data is moved to another area. Thus, even when data is recorded in an area where the spare area is to be expanded, the spare area can be expanded.

If a defective sector exists in an area to be reserved as an additional spare area, the size of the additional spare area is increased according to the number of the defective sectors. As a result, a spare area of a required size can be reliably secured.

Next, a countermeasure method in the case where the position information 143 of the second spare area managed by the system controller 200 and the position information 133 of the second spare area managed by the optical disk drive device 204 do not match. And a method of matching these pieces of position information 143 and 133 will be described.

In FIG. 1, it is assumed that sector a (sector 117) in data area 105 is detected as a defective sector, and that defective sector 117 is replaced by # 4 spare sector 122. In this case, # 4 spare sector 1
22 is specified by the two LSNs. The first L
SN is an LSN (here LSN = n) assigned in order from the top of the volume space 100a. The second LSN is the LSN (here, LSN = m) assigned to the defective sector 117 as the replacement source.

If the position information 143 of the second spare area managed by the system controller 200 and the position information 133 of the second spare area managed by the optical disk drive 204 do not match, the system The control device 200 may issue a Write command to the sector whose LSN is n. When this recording operation is performed, the data recorded in the # 4 spare sector 122 is overwritten. As a result, Fil
The data of the file named ea is destroyed.

In order to avoid a catastrophic failure that file data is destroyed, the optical disk drive device 204 refers to the position information 133 of the second spare area and refers to the sector included in the second spare area 108. Recognize. When a request is made to record data in a sector included in the second spare area 108, the optical disc drive device 204 prohibits a recording request for the second spare area 108 without performing a recording operation corresponding to the request. Is reported to the system control device 200. Accordingly, it is possible to prevent the data of the file from being destroyed due to the mismatch between the position information 133 of the second spare area and the position information 143 of the second spare area.

When the system controller 200 receives the error information, the system controller 200
It is preferable to execute a process of matching the position information 133 of the second spare area with the position information 143 of the second spare area. For example, as explained in the format process,
The system control device 200 acquires the position information 133 of the second spare area based on the information reproduced from the defect management information area 101, and based on the position information 133, the second spare area recorded in the file entry area 116. The location information 143 of the area is updated and the location information 14 is updated.
3, the space bitmap information stored in the bitmap memory 222 may be updated.

Before updating the position information 143 of the second spare area, as described in the processing of expanding the spare area, the area newly registered in the file entry as the second spare area 108 is other than the spare area. It is preferable to confirm that it is not used for the purpose. Such a check can be made by examining the entire file structure.

In the example of the mismatch between the position information 133 and 143, the size of the second spare area 108 recorded in the defect management information area 101 is recorded in the second spare area 108 recorded in the file entry area 116. This is an example in the case where the size is larger than 108.

Conversely, even when the size of the second spare area 108 recorded in the defect management information area 101 is smaller than the size of the second spare area 108 recorded in the file entry area 116, the position information 133, 143 can be detected, and the position information 133 and 143 can be matched.

For example, the system control device 200 obtains the position information 133 based on the data reproduced from the basic file structure area 104 as a start-up process of the system control device 200, and queries the spare area information to obtain the position information. 143 may be obtained. By comparing the position information 133 with the position information 143, it is possible to detect a mismatch between the position information 133 and 143.

When the mismatch between the position information 133 and 143 is detected, the system control device 200
The optical disk drive 20 is configured to correctly update the position information of the second spare area using the Spare command.
Instruct 4

(Embodiment 2) In Embodiment 2, the second
An example in which the spare area 108 is arranged outside the volume space 100a will be described.

In the second embodiment, an information recording / reproducing system 1b is used. The configuration of the information recording / reproducing system 1b is the same as the configuration of the information recording / reproducing system 1a shown in FIG. Therefore, the description is omitted here.

Each of the system control device 200 and the optical disk drive device 204 has a SCSI or ATA
It is connected to the I / O bus 203 via a PI interface. Commands and data are exchanged between the system control device 200 and the optical disk drive device 204.

[0224] The system control device 200 and the optical disk drive device 204 may be a single device integrally formed. In this case, the interface between the system control device 200 and the optical disk drive device 204 may be a simplified dedicated interface.

FIG. 8 shows the structure of the data recording area 100 of the optical disk according to the embodiment of the present invention. In FIG.
Reference numeral 181 indicates the state of the optical disk after the format processing, reference numeral 182 indicates the state of the optical disk after the data recording processing of recording a file having the name File-a on the optical disk, and reference numeral 183 indicates
This shows the state of the optical disc after data recording processing for recording a file having the name File-b on the optical disc.

FIG. 9 is a protocol chart showing the procedure of data recording processing for recording a file on an optical disk.

The data recording process shown in FIG. 9 includes a step S807 for calculating the use state of the spare area, a step S809 for determining the additional arrangement of the spare area based on the calculated use state, and Step S811 for securing an area and step S817 for registering a spare area are included. These steps are the same as the steps of the data recording process described in the first embodiment.

Hereinafter, the optical disk is designated by reference numeral 181 in FIG.
In the state indicated by, the file (Fil
A data recording process for recording ea) on an optical disc will be described. By this data recording process, the state of the optical disk changes from the state indicated by reference numeral 181 in FIG. 8 to the state indicated by reference number 182 in FIG. By this data recording process, the second spare area 153 is newly arranged. The state of the optical disk indicated by reference numeral 181 is the same as the state of the optical disk shown in FIG.

The optical disk is the optical disk drive 20
4, the spare area remaining amount detection unit 233 acquires information indicating the use state of the first spare area 102 as a start-up process of the optical disc drive device 204 (step S801).

For example, the spare area remaining amount detection unit 233
By referring to the spare area full flag 132, information indicating the use status of the first spare area 102 can be obtained. The setting of the first full flag 138 indicates that all the spare sectors in the first spare area 102 are used (that is, there is no spare sector that can be replaced in the first spare area 102).

[0231] In the first spare area 102, the spare sectors to which the larger physical sector numbers are assigned are used in order. That is, defective sectors are replaced with spare sectors in descending order of physical sector numbers assigned to spare sectors. The order of use of such spare sectors is the same in the second spare area 108.

[0232] The spare area remaining amount detection unit 233 is a part of the alternative entry recorded in the defect management information area 101.
A search is made for an alternative entry having the smallest spare sector position information (for example, a physical sector number), and a first entry is found based on the spare sector position information in the found spare entry.
Information indicating the usage status of the spare area 102 may be obtained. That is, spare area remaining amount detection section 233
Can determine the amount of available spare sectors in the first spare area 102 from the position information of the spare sector in the searched replacement entry and the size of the first spare area 102. In the example shown in FIG. 8, the size of the first spare area 102 is set in advance. Therefore, the spare area remaining amount detection unit 233 can know the amount of available spare sectors in the first spare area 102 from the position information of the spare sector in the searched replacement entry.

As described above, the information indicating the use status of the first spare area 102 may be the first full flag 138 or the amount of available spare sectors in the first spare area 102.

The file structure processing section 211 transmits a Read command to the optical disk drive device 204 as a start-up process of the system control device 200 (step S8).
02).

The data reproduction control unit 236 reproduces the data recorded in the volume structure area 103 and the basic file structure area 104 according to the address specified by the Read command, and returns the reproduced data to the system control device 200. (Step S803).

The file structure processing section 211 receives the data reproduced from the optical disk drive device 204,
The basic file structure is analyzed based on the reproduced data (step S802).

The file structure processing section 211
The command and the data of the file (File-a) are transmitted to the optical disk drive device 204 (step S8).
04).

The data recording control section 235 records the data transmitted from the system control device 200 in the data area 105 and the file structure area 106 (step S8).
05).

If a defective sector is detected in the data recording process in step S805, the defective sector processing section 234 deletes the defective sector from the first spare area 10
The spare area remaining amount detection unit 233 performs an alternative process of substituting for the second spare sector (step S806), from the information of the defect management information memory 241 updated in step S806, the information indicating the use state of the first spare area 102. Is obtained (step S807).

When the first spare area 102 is depleted, the spare remaining amount reporting unit 231 notifies the system controller 200 of information indicating that the first spare area 102 has been depleted (step S810). Such a notification may be, for example, "Recover" as Status information for the Write command transmitted in step S804.
red Error "is returned to the system controller 200.

The spare area extension determining unit 215 sends the first spare area 102 via the command status processing unit 216.
Is recognized, and it is determined that the volume space 100a is reduced and the second spare area 153 is allocated to the outermost area of the data recording area 100 (Step S).
809). Since the second spare area is located in the area having the largest PSN in the data recording area 100, the position information 133 of the second spare area includes, for example, the second spare area 1
08 is represented only by the PSN of the first sector included in the first sector.

The spare expansion area allocating section 214 reduces the volume space 100a and secures an area for allocating the second spare area 153 to an outer peripheral area following the volume space 100a by using a Read command and a Wri command.
Using the te command, the volume structure areas 103, 1
09 and the basic file structure area 104 are instructed to the optical disc drive 204 (step S
811).

The data recording control unit 235 and the data reproduction control unit 236 send the volume structure areas 103 and 109 and the basic file structure area 10 according to these commands.
4 is updated (step S812).

The details of the updating process shown in steps S811, 812 will be described later with reference to FIG.

The spare extension area designating section 217 has the Allo
Using the c Spare command, the optical disk drive device 204 is instructed to register the newly secured area as the second spare area 153 (step S81).
3). Note that a Format Unit command may be used instead of the Alloc Spare command.

The spare area allocating unit 232 recognizes that the second spare area has not been allocated, using the position information 133 of the second spare area stored in the defect management information memory 241, and issues an Alloc Spare command. (Or the Format Unit command), the second spare area 153 is stored in the defect management information memory 241 so as to be newly assigned to the second spare area 153.
The spare area position information 133 is updated, and the second full flag 139 for the second spare area 153 is reset (step S814). The second spare area 153
Is located outside the volume space 100a, the sector in the second spare area 153 has no LSN.

The defective sector processing section 234 updates the updated defect management information 1 stored in the defect management information memory 241.
30 is recorded in the defect management information area 101 (step S
817). Such recording is performed immediately after step S813 or when there is no data recording instruction from the system control device 200 for a predetermined time (for example, 5 seconds).

As described above, the optical disk drive 20
4 and the system controller 200 cooperate with each other and additionally arrange the second spare area 153, so that the reliability of data recording can be improved.

[0249] The second spare area 153 may be arranged in an area remote from the first spare area 102, or may be arranged in an area continuous with the first spare area 102.

For example, the second spare area 153 is arranged in an area including a sector to which a physical sector number larger than the sector of the first spare area 102 is assigned. Second
When the spare area 153 includes a plurality of spare sectors, the defective sectors are replaced with corresponding ones of the plurality of spare sectors in descending order of the physical sector numbers assigned to the plurality of spare sectors.

Further, as indicated by reference numeral 182 in FIG. 8, while holding the files already recorded on the optical disk, the volume space 100a includes the volume structure area 103, the basic file structure area 104, and the data area ( File-a) 105 and a file structure area (Fi)
le-a) 106, an unallocated area 151, and a volume structure area 152.

Thus, the volume space 100a is reconfigured so that the second spare area 153 is located outside the volume space 100a. Thus, the position information 133 of the second spare area recorded in the defect management information area 101 and the position information 143 of the second spare area recorded in the file entry area 116, as described in the first embodiment, The processing for avoiding the inconsistency becomes unnecessary.

In the second embodiment, it is not necessary to record the position information of the second spare area in the basic file structure area 104. This eliminates the need for a special data structure in the file system. When the optical disk on which the second spare area is located is reused, not only the file system described in the present embodiment but also the MS-DOS
The general-purpose FAT file system used in the above can be reused in a logical format.

The size of the second spare area 153 is
It can be determined according to the usage status of the first spare area 102. For example, in step S810, the size of the replaceable spare sector in the first spare area 102 is 1
When the number of spares becomes equal to or less than MB, the spare remaining amount reporting unit 231
The system controller 2 reports that the first spare area 102 has been exhausted.
00, the second spare area 153 is 1
It can be allocated in MB units.

It should be noted that ECC (Error Correc)
In the case where the “tion code” is configured in units of 16 sectors, one ECC block includes 16 sectors. At this time, the replacement process of the defective sector may be performed not in the sector unit but in the ECC block unit. By the substitution processing in units of ECC blocks, it is not necessary to calculate the ECC again, and the recording / reproducing system can be simplified.

Preferably, the minimum unit for expanding the second spare area may be determined in advance. For example, 32
It may be determined that the second spare area is extended in ECC block units (1 MB). In this case, the frequency of the depletion of the spare area can be reduced as compared with the expansion of the spare area in units of two to three sectors. Further, by expanding the second spare area in units of ECC blocks, it is possible to easily perform a process of replacing a defective sector in units of ECC blocks.

The volume structure area 103, the basic file structure area 104, and the file structure area (File-
a) 106, the descriptor defined by ECMA 167 recorded in the volume structure area 152 may be distributed and recorded on the optical disc.

Hereinafter, the optical disk is referred to by reference numeral 182 in FIG.
In the state indicated by, the file (Fil
A data recording process for recording eb) on an optical disc will be described. By this data recording process, the state of the optical disk changes from the state indicated by reference number 182 in FIG. 8 to the state indicated by reference number 183 in FIG. By this data recording process, the additional spare area is arranged in an area that is continuous with the second spare area 153 already arranged.
As a result, a second spare area 158 obtained by expanding the second spare area 153 is arranged.

As described above, the second spare area 153 can be extended in the direction in which the physical sector number decreases.

The data recording processing for recording the file (File-b) on the optical disk is also performed according to steps S801 to S817 shown in FIG.

Note that the processing in steps S801 to S803 is the same as the above-described processing, and a description thereof will be omitted.

The file structure processing section 211
The command and the data of the file (File-b) are transmitted to the optical disk drive device 204 (step S8).
04).

The data recording control section 235 records the data transmitted from the system control device 200 in the data area 154 and the file structure area 155 (step S8).
05).

If a defective sector is detected in the data recording processing in step S805, the defective sector processing section 234 deletes the defective sector from the second spare area 15
Substitute processing for substituting the spare sector No. 3 is performed (step S806). An alternative entry indicating that the defective sector has been replaced by a spare sector is generated, and is stored in the defect management information memory 241 before the replacement entry is recorded in the defect management information area 101. Here, when all the spare sectors in the second spare area 153 have been consumed, the defective sector processing unit 234 sets the second full flag 139 of the spare area full flag 132.

The spare area remaining amount detection unit 233 obtains information indicating the use status of the second spare area 153 (step S807). The method of acquiring the information indicating the usage status of the second spare area 153 is based on the first spare area 102 described above.
This is the same as the method for acquiring information indicating the usage status of the device.

When the second spare area 153 is exhausted, the spare remaining amount report unit 231 notifies the system controller 200 of information indicating that the second spare area 153 is exhausted (step S810).

The spare area extension determining section 215 sends the second spare area 153 via the command status processing section 216.
Is recognized, and it is determined that an additional spare area is newly allocated to an area that is continuous with the second spare area 153 (step S809).

The spare extended area allocating section 214 reduces the volume space 100a to secure an area to which an additional spare area is allocated by using a Read command and a Wr.
Using the item command, the volume structure area 103,
The optical disk drive 204 is instructed to update the file 152 and the basic file structure area 104 (step S811).

The data recording control unit 235 and the data reproduction control unit 236 send the volume structure areas 103 and 152 and the basic file structure area 10 according to these commands.
4 is updated (step S812).

The spare extension area instructing section 217 instructs the optical disc drive 204 to register the newly secured area and the second spare area 153 as a new second spare area 158 (step S813).

The spare area allocating section 232 recognizes that the second spare area 153 has been allocated, using the position information 133 of the second spare area stored in the defect management information memory 241 and recognizes that the second spare area 153 has been allocated. 2 Full flag 1
Check 39. Next, the spare area allocation unit 232
Updates the position information 133 of the second spare area stored in the defect management information memory 241 so that the second spare area is extended in the direction in which the physical sector number decreases.
If the second full flag 139 for the spare area 153 has been set, the second full flag 139 is reset (step S814). As a result, it is possible to use a replaceable spare sector in the second spare sector 158.

The defect sector processing section 234 updates the defect management information 1 stored in the defect management information memory 241.
30 is recorded in the defect management information area 101 (step S
817). Such a record is stored in the system controller 200.
This is performed when there is no data recording instruction for a predetermined time (for example, 5 seconds).

As described above, the optical disk drive 20
4 and the system controller 200 cooperate with each other, so that the second spare area can be expanded according to the frequency of occurrence of defective sectors.

FIG. 10 is a protocol chart showing the procedure of processing executed when an optical disk is inserted into an optical disk drive. In this process, the use status of the spare area is checked when the optical disc is inserted. As a result, it is determined whether or not it is necessary to allocate an additional spare area according to the use state of the spare area.

In the description related to FIG. 10, “spare area” refers to “first spare area 10” shown in FIG.
2 "or" second spare area 153 "or" second spare area 158 ".

[0276] The file structure processing section 211 obtains Get Spare in order to inquire the use status of the spare area.
An Info command is transmitted to the optical disk drive device 204 (step S821). File structure processing unit 21
1 may use a Read DVD Structure command instead of the Get SpareInfo command.

The spare area remaining amount detection unit 233 acquires information indicating the use state of the spare area (step S80).
7). The information indicating the usage status of the spare area includes, for example, information indicating the size of a replaceable area in the spare area.

The spare remaining amount report unit 231 reports information indicating the use state of the spare area to the system control device 200 (step S810).

The spare area extension determining section 215 determines whether or not to allocate an additional spare area according to the use state of the spare area. For example, when the size of the substitutable area in the spare area is equal to or smaller than a predetermined size (for example, 1 MB), the spare area extension determining unit 215 determines to newly allocate an additional spare area (step S809). .

Steps S811 to S8 shown in FIG.
The processing in step 17 is performed in steps S811 to S81 shown in FIG.
7 is the same as the process of FIG. Therefore, the description is omitted here.

As described above, the optical disk drive 20
4 and the system control device 200 cooperate with each other, so that a spare area having an optimum size according to the use state of the spare area can be allocated before data is recorded.

The processing for updating the volume structure areas 103 and 109 and the basic file structure area 104 will be described below in detail with reference to FIG. This updating process is executed by the spare extension area allocation unit 214. In FIG. 11, numbers starting with S indicate each step of the update process.

In FIG. 11, reference numerals 191 and 192 are used.
8 shows the data structure of the optical disk in the state indicated by reference numerals 181 and 182 in FIG. 8 in more detail at the descriptor level defined by ECMA167.

[0284] The volume structure area 103 is arranged at the innermost periphery of the volume space 100a. In the volume structure area 103, a main volume descriptor sequence 161 defining the volume space 100a as a logical space, a logical volume maintenance descriptor 162 having security information of the logical volume space 100a, and a read start position of the volume structure are described. The indicated start volume descriptor pointer 163 and the file set descriptor 164 are recorded.

In ECMA167, the file set descriptor is defined as a file structure, but in the example shown in FIG. 11, for convenience of description, it is assumed that the file set descriptor is defined as a volume structure.

The volume structure area 109 is located at the outermost periphery of the volume space 100a. In the volume structure area 109, the start volume descriptor pointer 16
5 and a secondary volume descriptor sequence 156 are recorded.

The basic file structure area 104 includes a space bitmap area 113 and a file entry area 11
4 and a root directory area 115. The space bitmap area 113 contains the logical volume space 1
A space bitmap for managing an unallocated area in 00a is recorded. In the file entry area 114, a file entry of the root directory is recorded. In the root directory area 115, information on the root directory is recorded.

The spare extended area allocating section 214 searches for the size and position of the unallocated area 107 based on the information reproduced from the space bitmap area 113.

Unallocated area 10 having a size equal to or larger than the size of an additional spare area to be allocated as second spare area 153
7 exists at the end of the logical volume space 100a (the outermost portion of the logical volume space 100a),
The spare expansion area allocating unit 214 updates the space bitmap 113 area so that the logical volume space 100a is reduced by the size of the additional spare area (step S101).

If there is no unallocated area 107 larger than the size of the additional spare area, a file move process (step S703 in FIG. 7) is executed. As a result, the data of the already recorded file is moved to another area.

The spare extension area allocating section 214 allocates the secondary volume descriptor string 156 and the start volume descriptor pointer 1 so that the second spare area 153 can be allocated.
65 and move (steps S102, S10).
3).

The spare expansion area allocation unit 214 updates the main volume descriptor sequence 161 and the logical volume integrity descriptor 162 to define the reduced logical volume space (steps S104 and S105).

Finally, spare extension area allocating section 214
To make the updated volume structure and the updated file structure valid, start volume descriptor pointer 1
63 is updated (step S106).

Thus, the volume space 100a
Can be secured as an area where the second spare area 153 is arranged.

[0295]

According to the information recording medium of the present invention, the volume space in which user data can be recorded is configured so that the second spare area can be additionally arranged. Thus, the spare area can be dynamically expanded according to the frequency of occurrence of defective sectors. As a result, even if a defective sector occurs more than expected, the reliability of data recording can be ensured without performing initialization processing or reformatting processing.

Since the spare area can be expanded according to the frequency of occurrence of defective sectors, user data can be recorded to the maximum extent in the logical volume space.

If data is recorded in an area to be reserved as an additional spare area, an additional spare area can be arranged after moving the data to another area. Thereby, the degree of freedom of the area where the additional spare area can be arranged can be increased.

[Brief description of the drawings]

FIG. 1 is a diagram showing a structure of a data recording area 100 of an optical disc according to an embodiment of the present invention.

FIG. 2 is an information recording / reproducing system 1 according to an embodiment of the present invention.
It is a block diagram which shows the structure of a.

FIG. 3 is a protocol chart showing a procedure of a format process.

FIG. 4 is a diagram showing a structure of a data recording area 100 of the optical disc after a format process.

FIG. 5 is a protocol chart showing a procedure of a data recording process.

FIGS. 6A to 6C are protocol charts showing a procedure of a process for determining whether or not it is necessary to extend the first spare area 102.

FIG. 7 shows a first spare area 102 and a second spare area 1
10 is a protocol chart showing a procedure of a process for expanding 08.

FIG. 8 is a diagram showing a structure of a data recording area 100 of the optical disc according to the embodiment of the present invention.

FIG. 9 is a protocol chart showing a procedure of a data recording process for recording a file on an optical disc.

FIG. 10 is a protocol chart showing a procedure of processing executed when an optical disk is inserted into an optical disk drive device.

FIG. 11 is a diagram for describing processing for updating the volume structure areas 103 and 109 and the basic file structure area 104.

FIG. 12 is a diagram showing a structure of a data recording area 800 of a conventional optical disc.

FIG. 13 is a protocol chart showing a procedure of a conventional format process and data recording process.

[Explanation of symbols]

 101 Defect Management Information Area 102 First Spare Area 104 Basic File Structure Area 108 Second Spare Area 113 Space Bitmap Area 116 File Entry Area 132 Spare Area Full Flag 133 Position Information of Second Spare Area 134, 135 Substitute Entry 143 Second Spare Area position information 200 System control device 201 System control unit 202 Memory circuit 203 I / O bus 204 Optical disk drive device 205 Drive control unit 206 Memory circuit 211 File structure processing unit 212 Spare expansion area detection unit 213 File movement processing unit 214 Spare expansion Area allocating section 215 Spare area extension determining section 216 Command status processing section 217 Spare extended area designating section 221 File structure memory 222 Bit map memory 22 4 Spare Area Information Memory 231 Spare Remaining Report Unit 232 Spare Area Allocation Unit 233 Spare Area Remaining Detector 234 Defective Sector Processing Unit 235 Data Recording Control Unit 236 Data Reproduction Control Unit 241 Defect Management Information Memory

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 23, 2000 (200.3.2.
3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

There in claim 1 An information recording medium including a plurality of sectors
Te, Supease for replacing defective sectors among the plurality of sectors
A first spare area including a sector and a spare area for managing replacement of the defective sector with a spare sector.
A defect management information area, and a volume space in which user data can be recorded.
A second spare area including a spare sector to replace the
The second space is configured so that it can be additionally arranged.
Location information indicating the location of the defect area is stored in the defect management information area.
An information recording medium on which information is recorded , wherein the second spare area is arranged in an area continuous with the first spare area.

2. An information recording medium including a plurality of sectors.
Te, Supease for replacing defective sectors among the plurality of sectors
A first spare area including a sector and a spare area for managing replacement of the defective sector with a spare sector.
A defect management information area, and a volume space in which user data can be recorded.
A second spare area including a spare sector to replace the
The second space is configured so that it can be additionally arranged.
Location information indicating the location of the defect area is stored in the defect management information area.
Recorded, the second spare area is located inside the volume space, and the position information indicating the position of the second spare area is:
An information recording medium recorded in a basic file structure management area for managing a basic file structure.

3. An information recording medium including a plurality of sectors, a first spare area including a spare sector for replacing a defective sector among the plurality of sectors, and a defect management for managing replacement of the defective sector with a spare sector. An information area, and a volume space capable of recording user data, wherein the volume space is configured such that a second spare area including a spare sector to replace a defective sector among the plurality of sectors can be additionally arranged. An information recording medium, wherein information indicating a spare amount usable in the first spare area and information indicating a spare amount usable in the second spare area are recorded in the defect management information area.

Information 4. A spare amount that can be used in the first spare area includes a replacement entry indicating that the defective sector is replaced by the spare sector in the first spare area, the second spare area spare amount available in the information, the includes a size of the second spare area, and a replacement entry indicating that the defective sector is replaced by the spare sector in the second spare area, according to claim 3 Information recording medium.

5. An information recording medium including a plurality of sectors.
An information recording method for recording a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes the steps of: (a) obtaining information indicating a use state of the first spare area;
A step of, depending on information indicating a usage condition of (b) the first spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording the defective sector in the defect management information area.
An alternative entry indicating that the spare sector has been replaced by a spare sector in the spare area is recorded. In the step (a), by referring to the alternative entry, it is determined whether or not there is no available spare sector in the first spare area. An information recording method, comprising the step of determining

6. An information recording medium including a plurality of sectors.
An information recording method for recording a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes the steps of: (a) obtaining information indicating a use state of the first spare area;
A step of, depending on information indicating a usage condition of (b) the first spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording in a management information area, and the step (c) includes securing a part of a logical volume space in the volume space as the second spare area .
Information recording method .

7. An information recording medium including a plurality of sectors.
An information recording method for recording a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes the steps of: (a) obtaining information indicating a use state of the first spare area;
A step of, depending on information indicating a usage condition of (b) the first spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording the data in a management information area, and the step (c) includes: moving data recorded in a part of the logical volume space in the volume space to another part of the logical volume space; An information recording method, comprising a step of securing the part of the logical volume space as the second spare area.

8. An information recording medium including a plurality of sectors.
An information recording method for recording a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes the steps of: (a) obtaining information indicating a use state of the first spare area;
A step of, depending on information indicating a usage condition of (b) the first spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording the information indicating the position of the second spare area in the defect management information area before recording the information indicating the position of the second spare area in the defect management information area. Information recording method including the step of detecting
Law.

9. Information on the information recording medium including a plurality of sectors
An information recording method for recording a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes the steps of: (a) obtaining information indicating a use state of the first spare area;
A step of, depending on information indicating a usage condition of (b) the first spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Encompasses the step of recording the management information area, the second spare area is disposed in the area contiguous with the first spare area, the information recording method.

10. An information recording medium including a plurality of sectors.
Information recording method for recording information, wherein the information recording medium includes a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes: (a) obtaining information indicating a use state of the second spare area;
A step of, depending on information indicating a usage condition of (b) the second spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording the defective sector in the defect management information area.
An alternative entry indicating that the spare sector in the spare area has been replaced is recorded. In the step (a), by referring to the alternative entry, it is determined whether there is no available spare sector in the second spare area. An information recording method, comprising the step of determining

11. information on the information recording medium including a plurality of sectors
Information recording method for recording information, wherein the information recording medium includes a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes: (a) obtaining information indicating a use state of the second spare area;
A step of, depending on information indicating a usage condition of (b) the second spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording in a management information area, and the step (c) includes securing a part of a logical volume space in the volume space as the second spare area .
Information recording method .

12. An information recording medium including a plurality of sectors.
Information recording method for recording information, wherein the information recording medium includes a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes: (a) obtaining information indicating a use state of the second spare area;
A step of, depending on information indicating a usage condition of (b) the second spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording the data in a management information area, and the step (c) includes: moving data recorded in a part of the logical volume space in the volume space to another part of the logical volume space; An information recording method, comprising a step of securing the part of the logical volume space as the second spare area.

13. information on the information recording medium including a plurality of sectors
Information recording method for recording information, wherein the information recording medium includes a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes: (a) obtaining information indicating a use state of the second spare area;
A step of, depending on information indicating a usage condition of (b) the second spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording the information indicating the position of the second spare area in the defect management information area before recording the information indicating the position of the second spare area in the defect management information area. Information recording method including the step of detecting
Law .

14. An information recording medium including a plurality of sectors.
Information recording method for recording information, wherein the information recording medium includes a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes: (a) obtaining information indicating a use state of the second spare area;
A step of, depending on information indicating a usage condition of (b) the second spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Recording the information in the management information area in the defect management information area, and then recording the information indicating the position of the second spare area in the defect management information area. Resetting a second full flag indicating whether or not there is no more information
How .

15. information on the information recording medium including a plurality of sectors
Information recording method for recording information, wherein the information recording medium includes a defective sector among the plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
The information recording method includes: (a) obtaining information indicating a use state of the second spare area;
A step of, depending on information indicating a usage condition of (b) the second spare area
To replace a defective sector among the plurality of sectors.
Whether to additionally arrange the second spare area including the asector
Determining whether, in the case of additionally arranging (c) the second spare area
Defines a part of the volume space as the second spare area.
(D) storing information indicating the position of the second spare area in the defect
Encompasses the step of recording the management information area, the second spare area is disposed in the area contiguous with the first spare area, the information recording method.

16. An information recording medium including a plurality of sectors.
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the first spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the first spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
And a spare area allocating unit for recording the defective sector in the defect information area.
A spare entry indicating that the spare sector has been replaced with a spare sector in the spare area is recorded, and the spare area remaining amount detection unit refers to the substitute entry, so that there is no available spare sector in the first spare area. An information recording / reproducing system that determines whether or not the information has been transmitted .

17. An information recording medium including a plurality of sectors.
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the first spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the first spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
And a spare area allocation section for recording the management information area, the spare extension area allocation section secures a part of the logical volume space in the volume space as the second spare area, the information recording and reproducing system
M

18. All the information recording medium including a plurality of sectors
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the first spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the first spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
A spare area allocating unit that records data in a part of the logical volume space in the volume space to another part of the logical volume space. Information recording / reproducing, which secures the part of the logical volume space as the second spare area
System .

19. All the information recording medium including a plurality of sectors
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the first spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the first spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
An information recording / reproducing system , comprising: a spare area allocating unit for recording information in a physical information area ;

20. An information recording medium including a plurality of sectors.
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the first spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the first spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
A spare area allocating unit that records information in a physical information area, the information recording / reproducing system includes: a recording device that records information on an information recording medium; and a control device that controls the recording device. Comprises a spare remaining amount reporting unit that reports information indicating the use state of the first spare area acquired by the spare area remaining amount detecting unit to the control device ,
Information recording and playback system .

21. The information indicating the use status of the first spare area includes information indicating the remaining amount of the first spare area.
An information recording / reproducing system according to claim 20 .

22. The information indicating the usage status of the first spare area includes information indicating an error status to the data recording instruction, the information recording and reproducing system according to claim 20.

23. An information recording medium including a plurality of sectors.
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the second spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the second spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
A spare area allocating section for recording the defective sector in the defect management information area.
A spare entry indicating that the spare sector has been replaced by a spare sector in the spare area is recorded, and the spare area remaining amount detection unit refers to the spare entry, so that there is no available spare sector in the second spare area. An information recording / reproducing system that determines whether or not the information has been transmitted .

24. All the information recording medium including a plurality of sectors
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the second spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the second spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
And a spare area allocation section for recording the management information area, the spare extension area allocation section secures a part of the logical volume space in the volume space as the second spare area, the information recording and reproducing system
M

25. An information recording medium including a plurality of sectors.
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the second spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the second spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
A spare area allocating unit that records data in a part of the logical volume space in the volume space to another part of the logical volume space. Information recording / reproducing, which secures the part of the logical volume space as the second spare area
System .

26. All the information recording medium including a plurality of sectors
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the second spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the second spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
A spare area allocating unit that records the information indicating the position of the second spare area in the defect management information area, and that can be used in the second spare area. An information recording / reproducing system for resetting a second full flag indicating whether or not there are no more spare sectors.

27. All the information recording medium including a plurality of sectors
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the second spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the second spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
An information recording / reproducing system , comprising: a spare area allocating unit for recording information in a physical information area ;

28. An information recording medium including a plurality of sectors.
An information recording / reproducing system for reproducing information from a plurality of sectors.
A first spare area including a spare sector for replacing
Defect that manages replacement of a defective sector with a spare sector
Management information area and volume that can record user data
And the volume space includes a plurality of sections.
Second including a spare sector to replace a defective sector
It is configured so that a spare area can be additionally allocated.
In other words, the information recording / reproducing system obtains information indicating the use status of the second spare area.
According to the pair area remaining amount detection unit and the information indicating the usage status of the second spare area,
A spare section that replaces a defective sector among a plurality of sectors
It is determined whether the second spare area including the data
A spare area extension determining unit for defining the second spare area,
A part of a volume space as the second spare area
A extended area allocating unit, and position information indicating a position of the second spare area,
A spare area allocating unit that records information in a physical information area, the information recording / reproducing system includes: a recording device that records information on an information recording medium; and a control device that controls the recording device. Comprises a spare remaining amount report unit that reports information indicating the use state of the second spare area acquired by the spare area remaining amount detection unit to the control device ,
Information recording and playback system .

Information indicating the usage status of 29. The second spare area includes information indicating the remaining amount of the second spare area,
An information recording / reproducing system according to claim 28 .

30. The information recording / reproducing system according to claim 28 , wherein the information indicating the use status of the second spare area includes information indicating an error status in response to a data recording instruction.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G11B 20/18 572 G11B 20/18 572F (72) Inventor Hiroshi Ueda 1006 Odakadoma, Kadoma City, Osaka Matsushita Electric Matsushita Electric Industrial Co., Ltd. (72) Inventor Nohisa Fukushima No. 1006 Kadoma, Kazuma, Osaka

Claims (65)

[Claims] 1. An information recording medium including a plurality of sectors, a first spare area including a spare sector for replacing a defective sector among the plurality of sectors, and a defect management for managing replacement of the defective sector with a spare sector. An information area, and a volume space capable of recording user data, wherein the volume space is configured such that a second spare area including a spare sector to replace a defective sector among the plurality of sectors can be additionally arranged. An information recording medium, wherein position information indicating a position of the second spare area is recorded in the defect management information area. 2. The information recording medium according to claim 1, wherein said second spare area is arranged in an area apart from said first spare area. 3. The information recording medium according to claim 1, wherein said second spare area is arranged in an area continuous with said first spare area. 4. A physical sector number is assigned to each of the first spare area and the second spare area, and a physical sector number assigned to the first spare area is assigned to the second spare area. 2. The information recording medium according to claim 1, wherein the information recording medium is smaller than the assigned physical sector number. 5. The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector is a physical sector assigned to the plurality of spare sectors. The information recording medium according to claim 4, wherein one of the plurality of spare sectors is replaced with the spare sector in descending order of the number. 6. The second spare area is expandable in a direction in which a physical sector number decreases.
An information recording medium according to claim 1. 7. The information recording medium according to claim 1, wherein the second spare area is located outside the volume space. 8. The second spare area is located inside the volume space, and position information indicating the position of the second spare area is recorded in a basic file structure management area for managing a basic file structure. The information recording medium according to claim 1. 9. An information recording medium including a plurality of sectors, a first spare area including a spare sector for replacing a defective sector among the plurality of sectors, and a defect management for managing replacement of the defective sector with a spare sector. An information area, and a volume space capable of recording user data, wherein the volume space is configured such that a second spare area including a spare sector to replace a defective sector among the plurality of sectors can be additionally arranged. An information recording medium, wherein information indicating a spare amount usable in the first spare area and information indicating a spare amount usable in the second spare area are recorded in the defect management information area. 10. The information on the amount of spare available in the first spare area includes a replacement entry indicating that the defective sector has been replaced by a spare sector in the first spare area, and the second spare area. 10. The information on the amount of spare available in the method according to claim 9, wherein the information on the size of the second spare area includes a replacement entry indicating that the defective sector has been replaced by a spare sector in the second spare area. Information recording medium. 11. The information on the amount of spare available in the first spare area includes a first full flag indicating whether there is no available spare sector in the first spare area, and using the second spare area. 10. The information recording medium according to claim 9, wherein the information on the possible spare amount includes a second full flag indicating whether or not there is no available spare sector in the second spare area. 12. An information recording method for recording information on an information recording medium including a plurality of sectors, the information recording medium comprising: a first spare area including a spare sector for replacing a defective sector among the plurality of sectors; A defect management information area for managing replacement of the defective sector with a spare sector, and a volume space capable of recording user data, wherein the volume space includes a spare sector for replacing a defective sector among the plurality of sectors. 2
The information recording method includes: (a) acquiring information indicating a use state of the first spare area; and (b) acquiring the information indicating a use state of the first spare area. Determining whether to additionally arrange a second spare area including a spare sector that replaces a defective sector among the plurality of sectors in accordance with the information indicating the use status of the plurality of sectors; (c) the second spare area When an area is additionally arranged, a step of setting a part of the volume space as the second spare area; and (d) recording information indicating a position of the second spare area in the defect management information area. And an information recording method. 13. The defect management information area includes the first
A first full flag indicating whether there is no available spare sector in the spare area is recorded. In the step (a), the spare sector available in the first spare area is referred to by referring to the first full flag. 13. The information recording method according to claim 12, further comprising a step of determining whether or not there is no more. 14. An alternative entry indicating that the defective sector has been replaced by a spare sector in the first spare area is recorded in the defect management information area, and the step (a) comprises: 13. The information recording method according to claim 12, further comprising: determining whether there is no available spare sector in the first spare area by referring to the information. 15. The step (c) includes: (c-1) reducing the size of the volume space; and (c-2) storing an outer peripheral area following the reduced volume space as the second spare. 13. The information recording method according to claim 12, comprising a step of securing the area. 16. The step (c) includes a step of securing a part of a logical volume space in the volume space as the second spare area.
The information recording method according to claim 12. 17. The step (c) comprises: moving data recorded in a part of the logical volume space in the volume space to another part of the logical volume space; 13. The information recording method according to claim 12, further comprising a step of securing a part as the second spare area. 18. The step (d) includes a step of detecting a defective sector in a part of the volume space before recording information indicating a position of the second spare area in the defect management information area. The information recording method according to claim 12, wherein: 19. The information recording method according to claim 12, wherein said second spare area is arranged in an area apart from said first spare area. 20. The information recording method according to claim 12, wherein said second spare area is arranged in an area continuous with said first spare area. 21. A physical sector number is assigned to each of the first spare area and the second spare area, and a physical sector number assigned to the first spare area is assigned to the second spare area. 13. The information recording method according to claim 12, wherein the information is smaller than the assigned physical sector number. 22. The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector is a physical sector assigned to the plurality of spare sectors. 22. The information recording method according to claim 21, wherein one of the plurality of spare sectors is substituted for the spare sectors in descending order of the number. 23. The information recording method according to claim 21, wherein the second spare area is expandable in a direction in which a physical sector number decreases. 24. An information recording method for recording information on an information recording medium including a plurality of sectors, the information recording medium comprising: a first spare area including a spare sector for replacing a defective sector among the plurality of sectors; A defect management information area for managing replacement of the defective sector with a spare sector, and a volume space capable of recording user data, wherein the volume space includes a spare sector for replacing a defective sector among the plurality of sectors. 2
The information recording method includes: (a) acquiring information indicating a use state of the second spare area; and (b) acquiring the information indicating a use state of the second spare area. Determining whether to additionally arrange a second spare area including a spare sector that replaces a defective sector among the plurality of sectors in accordance with the information indicating the use status of the plurality of sectors; (c) the second spare area When an area is additionally arranged, a step of setting a part of the volume space as the second spare area; and (d) recording information indicating a position of the second spare area in the defect management information area. And an information recording method. 25. The defect management information area includes the second
A second full flag indicating whether or not there is no more available spare sector in the spare area is recorded. In the step (a), the spare sector available in the second spare area is referred to by referring to the second full flag. 25. The information recording method according to claim 24, further comprising a step of determining whether or not there is no more. 26. An alternative entry indicating that the defective sector has been replaced by a spare sector in the second spare area is recorded in the defect management information area, and the step (a) comprises: 25. The information recording method according to claim 24, further comprising the step of: determining whether there is no available spare sector in the second spare area by referring to. 27. The step (c) includes: (c-1) reducing the size of the volume space; and (c-2) setting an outer peripheral area following the reduced volume space as the second spare. 25. The information recording method according to claim 24, further comprising the step of securing the area as an area. 28. The step (c) includes a step of securing a part of a logical volume space in the volume space as the second spare area.
The information recording method according to claim 24. 29. In the step (c), after moving data recorded in a part of the logical volume space in the volume space to another part of the logical volume space, 25. The information recording method according to claim 24, further comprising a step of securing a portion as the second spare area. 30. The step (d) includes a step of detecting a defective sector in a part of the volume space before recording information indicating a position of the second spare area in the defect management information area. An information recording method according to claim 24. 31. In the step (d), after recording information indicating a position of the second spare area in the defect management information area, indicating whether there is no available spare sector in the second spare area. 3. The method of claim 2, further comprising resetting the second full flag.
4. The information recording method according to item 4. 32. The information recording method according to claim 24, wherein the second spare area is arranged in an area apart from the first spare area. 33. The information recording method according to claim 24, wherein the second spare area is arranged in an area continuous with the first spare area. 34. A physical sector number is assigned to each of the first spare area and the second spare area, and a physical sector number assigned to the first spare area is assigned to the second spare area. 25. The information recording method according to claim 24, wherein the information is smaller than the assigned physical sector number. 35. The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector is a physical sector assigned to the plurality of spare sectors. 35. The information recording method according to claim 34, wherein one of the plurality of spare sectors is replaced by a descending number. 36. The information recording method according to claim 34, wherein the second spare area is expandable in a direction in which a physical sector number decreases. 37. An information recording / reproducing system for an information recording medium including a plurality of sectors, wherein the information recording medium includes a first spare area including a spare sector for replacing a defective sector among the plurality of sectors; A defect management information area for managing replacement of the defective sector with a spare sector; and a volume space capable of recording user data, wherein the volume space includes a spare sector for replacing a defective sector among the plurality of sectors.
The information recording / reproducing system is configured such that a spare area can be additionally arranged, and the information recording / reproducing system obtains information indicating a use state of the first spare area; and the first spare area A spare area extension determining unit that determines whether to additionally arrange a second spare area including a spare sector that replaces a defective sector among the plurality of sectors, in accordance with information indicating a use state of the second sector; In a case where a spare area is additionally arranged, a spare extended area allocating unit that uses a part of the volume space as the second spare area, and position information indicating a position of the second spare area is stored in the defect management information area. An information recording / reproducing system, comprising: 38. The first area in the defect management information area,
A first full flag indicating whether or not there is no more available spare sector in the spare area is recorded, and the spare area remaining amount detection unit can use the first spare area by referring to the first full flag. 38. The information recording / reproducing system according to claim 37, wherein it is determined whether there are no more spare sectors. 39. An alternative entry indicating that the defective sector has been replaced by a spare sector in the first spare area is recorded in the defect management information area. 38. The information recording / reproducing system according to claim 37, wherein it is determined whether there is no available spare sector in the first spare area by referring to an alternative entry. 40. The spare expansion area allocating unit according to claim 37, wherein the spare expansion area allocating unit reduces the size of the volume space, and secures an outer peripheral area following the reduced volume space as the second spare area. Information recording and playback system. 41. The information recording / reproducing system according to claim 37, wherein the spare extension area allocating unit secures a part of a logical volume space in the volume space as the second spare area. 42. The spare extension area allocating unit, after moving data recorded in a part of the logical volume space in the volume space to another part of the logical volume space, The information recording / reproducing system according to claim 37, wherein the part is secured as the second spare area. 43. The information recording / reproducing system according to claim 37, wherein the second spare area is arranged in an area apart from the first spare area. 44. The information recording / reproducing system according to claim 37, wherein the second spare area is arranged in an area continuous with the first spare area. 45. A physical sector number is assigned to each of the first spare area and the second spare area, and a physical sector number assigned to the first spare area is assigned to the second spare area. 38. The information recording / reproducing system according to claim 37, wherein the information recording / reproducing system is smaller than the assigned physical sector number. 46. The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector is a physical sector assigned to the plurality of spare sectors. 46. The information recording / reproducing system according to claim 45, wherein one of the plurality of spare sectors is replaced with a descending number. 47. The information recording / reproducing system according to claim 45, wherein the second spare area is expandable in a direction in which a physical sector number decreases. 48. The information recording / reproducing system comprises: a recording device for recording information on an information recording medium; and a control device for controlling the recording device, wherein the recording device comprises: A spare remaining amount reporting unit that reports information indicating a use state of the first spare area acquired by the controller to the control device.
An information recording / reproducing system according to claim 37. 49. The information indicating the use status of the first spare area includes information indicating the remaining amount of the first spare area.
49. The information recording / reproducing system according to claim 48. 50. The information recording / reproducing system according to claim 48, wherein the information indicating the use status of the first spare area includes information indicating an error status in response to a data recording instruction. 51. An information recording / reproducing system for an information recording medium including a plurality of sectors, wherein the information recording medium includes a first spare area including a spare sector for replacing a defective sector among the plurality of sectors; A defect management information area for managing replacement of the defective sector with a spare sector; and a volume space capable of recording user data, wherein the volume space includes a spare sector for replacing a defective sector among the plurality of sectors.
The information recording / reproducing system is configured so that a spare area can be additionally arranged, the information recording / reproducing system includes: a spare area remaining amount detection unit that acquires information indicating a use state of the second spare area; A spare area extension determining unit that determines whether to additionally arrange a second spare area including a spare sector that replaces a defective sector among the plurality of sectors, in accordance with information indicating a use status of the second sector; In a case where a spare area is additionally arranged, a spare extended area allocating unit that uses a part of the volume space as the second spare area, and position information indicating a position of the second spare area is stored in the defect management information area. An information recording / reproducing system, comprising: 52. The defect management information area contains the second
A second full flag indicating whether there is no available spare sector in the spare area is recorded, and the spare area remaining amount detection unit refers to the second full flag to enable use in the second spare area. 52. The information recording / reproducing system according to claim 51, wherein it is determined whether there are no more spare sectors. 53. An alternative entry indicating that the defective sector has been replaced by a spare sector in the second spare area is recorded in the defect management information area. 52. The information recording / reproducing system according to claim 51, wherein it is determined whether there is no available spare sector in the second spare area by referring to an alternative entry. 54. The spare extended area allocating unit according to claim 51, wherein the spare extended area allocating unit reduces the size of the volume space, and secures an outer peripheral area following the reduced volume space as the second spare area. Information recording and playback system. 55. The information recording / reproducing system according to claim 51, wherein the spare extension area allocating unit secures a part of a logical volume space in the volume space as the second spare area. 56. The spare extended area allocating unit, after moving data recorded in a part of the logical volume space in the volume space to another part of the logical volume space, The information recording / reproducing system according to claim 51, wherein the part is secured as the second spare area. 57. The spare area allocating unit, after recording information indicating the position of the second spare area in the defect management information area, indicates whether there is no available spare sector in the second spare area. 52. The information recording / reproducing system according to claim 51, wherein the second full flag is reset. 58. The information recording / reproducing system according to claim 51, wherein the second spare area is arranged in an area apart from the first spare area. 59. The information recording / reproducing system according to claim 51, wherein the second spare area is arranged in an area continuous with the first spare area. 60. A physical sector number is assigned to each of the first spare area and the second spare area, and a physical sector number assigned to the first spare area is assigned to the second spare area. 52. The information recording / reproducing system according to claim 51, wherein the information recording / reproducing system is smaller than the assigned physical sector number. 61. The second spare area includes a plurality of spare sectors, a physical sector number is assigned to each of the plurality of spare sectors, and the defective sector is a physical sector assigned to the plurality of spare sectors. 61. The information recording / reproducing system according to claim 60, wherein one of the plurality of spare sectors is replaced with a descending number. 62. The information recording / reproducing system according to claim 60, wherein the second spare area is expandable in a direction in which a physical sector number decreases. 63. The information recording / reproducing system comprises: a recording device for recording information on an information recording medium; and a control device for controlling the recording device, wherein the recording device comprises: A spare remaining amount report unit that reports information indicating a use state of the second spare area obtained by the control unit to the control device.
The information recording / reproducing system according to claim 51. 64. The information indicating the use status of the second spare area includes information indicating the remaining amount of the second spare area.
An information recording / reproducing system according to claim 63. 65. The information recording / reproducing system according to claim 63, wherein the information indicating the use status of the second spare area includes information indicating an error status in response to a data recording instruction.