JP3114689B2 - Disk-shaped recording medium and information recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a disk-shaped recording medium and an information recording / reproducing apparatus, and more particularly to a disk-shaped recording medium and an information recording / reproducing apparatus for preventing deterioration of important data.

[0002]

2. Description of the Related Art In a disk-shaped recording medium, the track width tends to be narrowed in order to increase the amount of recordable information. Further, in the optical disk, a method of recording information on each of the land and groove of the track has been developed as one means for increasing the capacity. For example, on an optical disc 500 shown in FIG. 22, convex land tracks 501 and concave groove tracks 502 are provided alternately and spirally. In the case of a phase-change type optical disk, the land mark 501 or the groove track 502 is irradiated with a laser beam whose intensity is adjusted so that the information mark 50 is formed.
3 is recorded, and the information indicated by the information mark 503 is
Since the reflectance differs between crystalline and amorphous, it is read out depending on the intensity of the reflected laser light.

In such a situation, problems such as "cross talk" in which information of tracks on both sides are mixed as noise during reproduction and "cross erase" in which information of tracks on both sides are partially erased during recording may occur. is there. In particular,
When important information such as file management information is deleted by cross-erase, a serious situation occurs such that the file cannot be read. As a technique for solving such a problem, there is a method described in JP-A-7-134826. According to the method described in this publication, in an area where the file management information is recorded and reproduced, only the land or the groove is recorded. Specifically, the method described in the above publication performs processing as shown in FIG. That is, a process of receiving a recording / reproducing operation command from the host controller (step SS1), and a process of setting a start / end position for performing recording / reproducing (step SS2).
Then, a process for moving to a start position for performing recording and reproduction (step SS3) and a process for confirming a start position for performing recording and reproduction (step SS4) are performed.

[0004] After step SS4, a determination process (step SS5) is performed to determine whether or not the start position for performing the recording / reproducing process is the file management area. When the start position is in the file management area, the recording / reproducing operation processing 51 of the file management area is performed according to the identifier j read at the time of startup.
0, and if the target position is in the data area, an operation process 511 for recording and reproducing information in the data area is performed. In the recording / reproducing operation processing 510 of the file management area, processing for recording / reproducing only on the land of the file management area (step SS6) and determination processing for judging whether the recording / reproduction of the file management area is completed to the end position (step SS7) ) And do.

In an operation process 511 for recording / reproducing information in a data area, a process of inputting a logical value "1" indicating that recording / reproducing of a land is to be performed as an identifier k (step SS).
Perform 8). After step SS8, a determination process for determining whether the logical value of the identifier k is “1” or “0” (step SS8)
Perform 9). If the identifier k is a logical value "1", that is, if the area to be recorded / reproduced is a land, a land recording / reproducing process (step SS10) is performed. Then, a groove recording / reproducing process (step SS15) is performed. Step SS
After 10, the judgment processing for judging whether the land recording / reproducing processing has been completed up to the zone end position (step SS1)
Perform 1). If the position where the land recording / reproducing process is completed is the zone end position, a process of inputting a logical value “0” to the identifier k is performed (step SS12). If it is not the zone end position in step SS11, the process returns to step SS10. After step SS29, the process of moving to the groove recording / reproduction start position (step SS1)
3) and a groove recording / reproducing start position confirmation process (step SS14), and the process ends.

[0006] On the other hand, when step SS15 ends, a judgment process for judging whether or not the position where the groove recording / reproducing process ends is the zone end position (step SS16).
I do. If it is the zone end position in step SS16, a process of inputting a logical value "1" to the identifier k is performed (step SS17), and the process ends. If it is not the zone end position in step SS16, the process returns to step SS15. Thus, according to the prior art,
When a recording / reproducing operation command is issued from the host controller, it is first determined whether or not it is file management information. In the case of, recording and reproduction are performed on both the land and the groove.

[0007]

However, the prior art described in the above publication has the following problems. That is, in the prior art described in the above publication, it is determined whether or not the operation command from the host controller is file management information. However, no judgment has been made on the information already recorded on the optical disc.
Therefore, when recording information on a medium on which nothing is recorded, it is possible to control whether to record on both lands and grooves or only on one of them. In addition, it cannot be determined whether or not information can be recorded on a track adjacent to the track on which information is recorded. For example, when the file management information is already recorded only in the land, the groove in this area is in an unused state, and it is considered that the groove is written when the recording operation command is next issued from the host controller. Can be In such a case, even if the file management information is recorded only on the land, there is an unavoidable risk that the file management information is degraded by a later instruction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances. For important information, a track adjacent to a track on which the important information is recorded cannot be used, so that cross erase and crosstalk can be prevented. It is an object of the present invention to provide a disk-shaped recording medium and an information recording / reproducing apparatus which have been solved.

[0009]

According to a first aspect of the present invention, a track is formed concentrically or spirally, and the track is divided into a plurality of sectors. A physical address is assigned, and a lead-in area and / or a lead-out area accessed using the physical address, and a desired sector by an address logical-physical conversion from a logical address associated with the physical address. A disk-shaped recording medium having a data area to be accessed, wherein the predetermined information on an inner adjacent track and an outer adjacent track adjacent to a track having a sector for recording the predetermined information in the data area. Is recorded in the defect list as a defective area.

According to a second aspect of the present invention, a track is formed concentrically or spirally, the track is divided into a plurality of sectors, a physical address is assigned to the sector, and access is performed using the physical address. Disk-shaped recording medium having a lead-in area and / or a lead-out area for performing a read and write operation, and a data area for accessing a desired sector by an address logical-physical conversion from a logical address associated with the physical address In the data area, an inner adjacent track and an outer adjacent track adjacent to a track having a sector for recording predetermined information are registered as a defective area in a defect list.

According to a third aspect of the present invention, a track is formed concentrically or spirally, the track is divided into a plurality of sectors, a physical address is assigned to the sector, and access is performed using the physical address. Disk-shaped recording medium having a lead-in area and / or a lead-out area for performing a read and write operation, and a data area for accessing a desired sector by an address logical-physical conversion from a logical address associated with the physical address a is, among the data area, use the sector adjacent to the sector storing the above-mentioned predetermined information of peripheral on adjacent tracks and the outer periphery adjacent the track adjacent to the track with a sector for recording a predetermined information as prohibited area It is characterized in that it is registered in a prohibited list.

According to a fourth aspect of the present invention, a track is formed concentrically or spirally, the track is divided into a plurality of sectors, a physical address is assigned to the sector, and access is performed using the physical address. Disk-shaped recording medium having a lead-in area and / or a lead-out area for performing a read and write operation, and a data area for accessing a desired sector by an address logical-physical conversion from a logical address associated with the physical address In the data area, an inner adjacent track and an outer adjacent track adjacent to a track of a sector in which predetermined information is recorded are registered as a use prohibited area in a use prohibition list.

According to a fifth aspect of the present invention, a track is formed concentrically or spirally, the track is divided into a plurality of sectors, a physical address is assigned to the sector, and access is performed using the physical address. Disk-shaped recording medium having a lead-in area and / or a lead-out area for performing a read and write operation, and a data area for accessing a desired sector by an address logical-physical conversion from a logical address associated with the physical address In the data area, a sector adjacent to the sector on which the predetermined information is recorded on the inner circumference adjacent track and the outer circumference adjacent track adjacent to the track having the sector on which the predetermined information is to be recorded is defined as a use-prohibited area. It is characterized in that the disk layout is modified so that it becomes inaccessible.

According to a sixth aspect of the present invention, a track is formed concentrically or spirally, the track is divided into a plurality of sectors, a physical address is assigned to the sector, and access is performed using the physical address. Disk-shaped recording medium having a lead-in area and / or a lead-out area for performing a read and write operation, and a data area for accessing a desired sector by an address logical-physical conversion from a logical address associated with the physical address Wherein the disk layout is modified so that an inner adjacent track and an outer adjacent track adjacent to a track having a sector for recording predetermined information in the data area are logically inaccessible as use prohibited areas. And According to a seventh aspect of the invention, there is provided the disk-shaped recording medium according to any one of the first to sixth aspects, wherein the predetermined information is disk management information.

According to an eighth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit.
Processing for specifying a sector for recording the predetermined information, and specifying a sector adjacent to the sector for recording the predetermined information on an inner circumference adjacent track and an outer circumference adjacent track adjacent to a track where the sector for recording the predetermined information is located Processing, determining whether the specified inner peripheral adjacent sector and outer peripheral adjacent sector are areas in which user information in the data area can be recorded and reproduced, and in the case where the user information in the data area can be recorded and reproduced. Performs a process of registering the adjacent sector in the defect list. When the host computer accesses the disk-shaped recording medium, the host computer refers to the defect list to be adjacent to the sector in which the predetermined information is recorded. It is characterized in that access is made while avoiding sectors.

According to a ninth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for performing recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit.
A process for specifying a sector for recording the predetermined information, a process for specifying an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a track having the sector for recording the predetermined information, a process for specifying the specified inner circumferential adjacent track and the outer circumferential adjacent track Is a process of determining whether or not is an area in which user information of the data area can be recorded and reproduced, and a process of registering the adjacent track in the defect list when the area is a region in which the user information of the data area can be recorded and reproduced. When the host computer accesses the disc-shaped recording medium, the disc-shaped recording medium is accessed by avoiding a track adjacent to a sector in which the predetermined information is recorded by referring to the defect list.

According to a tenth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, a recording circuit, a reproducing circuit, and a servo circuit.The controller includes a sector for recording predetermined information. A process for specifying the sector adjacent to the sector on which the predetermined information is to be recorded on the inner circumferential adjacent track and the outer circumferential adjacent track adjacent to the track having the sector on which the predetermined information is to be recorded; A process of determining whether the peripheral adjacent sector and the peripheral adjacent sector are areas in which user information in the data area can be recorded and reproduced; A process of determining whether or not the peripheral adjacent sector and the outer peripheral adjacent sector are unused; and, if the sector is a sector capable of recording and reproducing user information in the data area and is not unused, the information recorded in the adjacent sector is deleted. A process of performing substitution processing on another area and registering the adjacent sector in the defect list, and registering an adjacent sector in the defect list when the sector is a sector capable of recording and reproducing user information in the data area and is unused. And when the host computer accesses the disk-shaped recording medium, accesses the sector adjacent to the sector for recording the predetermined information by referring to the defect list. .

According to an eleventh aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for performing recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, a recording circuit, a reproducing circuit, and a servo circuit.The controller includes a sector for recording predetermined information. A process of specifying, a process of specifying an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a track having a sector for recording the predetermined information, and a process of specifying the specified inner circumferential adjacent track and the outer circumferential adjacent track by using the user information of the data area. A process of determining whether or not the area is a recordable / reproducible area; If the sector is a sector in which user information in the data area can be recorded and reproduced and is not unused, the information recorded in the adjacent track is replaced with another area, and A process of registering a track in a defect list and a process of registering an adjacent track in a defect list when the sector is a sector in which user information of a data area can be recorded and reproduced and is not used, are performed by the host computer. When an access is made to the shape recording medium, the defect list is referred to and an access is made avoiding a track adjacent to a sector in which the predetermined information is recorded.

According to a twelfth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, a recording circuit, a reproducing circuit, and a servo circuit.The controller includes a sector for recording predetermined information. A process for specifying the sector adjacent to the sector on which the predetermined information is to be recorded on the inner circumference adjacent track and the outer circumference adjacent track adjacent to the track having the sector for recording the predetermined information; A process of determining whether the peripheral adjacent sector and the outer peripheral adjacent sector are areas in which user information in the data area can be recorded and reproduced, and If the user information in the area can be recorded / reproduced, the adjacent sector is registered in a use prohibition list, and if the host computer accesses the disc-shaped recording medium, the use prohibition is performed. It is characterized in that access is made by avoiding sectors adjacent to the sector in which the predetermined information is recorded with reference to the list.

According to a thirteenth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, a recording circuit, a reproducing circuit, and a servo circuit.The controller includes a sector for recording predetermined information. A process of specifying, a process of specifying an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a track having a sector for recording the predetermined information, and a process of specifying the specified inner circumferential adjacent track and the outer circumferential adjacent track by using the user information of the data area. A process of determining whether or not the area is a recordable / reproducible area; If the sector is a sector in which user information in the data area can be recorded and reproduced and is not unused, the information recorded in the adjacent track is replaced with another area, and The host computer performs a process of registering a track in the use prohibition list and a process of registering an adjacent track in the use prohibition list when the sector is a sector capable of recording and reproducing the user information in the data area and is not used. When the disk-shaped recording medium is accessed, access is made by avoiding a track adjacent to a sector in which the predetermined information is recorded by referring to the use prohibition list.

According to a fourteenth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, a recording circuit, a reproducing circuit, and a servo circuit.The controller includes a sector for recording predetermined information. A process for specifying the sector adjacent to the sector on which the predetermined information is to be recorded on the inner circumference adjacent track and the outer circumference adjacent track adjacent to the track having the sector for recording the predetermined information; A process of determining whether the peripheral adjacent sector and the outer peripheral adjacent sector are areas in which user information in the data area can be recorded and reproduced, A process of determining whether or not the peripheral adjacent sector and the outer peripheral adjacent sector are unused; and, if the sector is a sector that can record and reproduce the user information in the data area and is not unused, the information recorded in the adjacent sector is deleted. A process of performing substitution processing on another area and registering the adjacent sector in the use prohibition list, and a step of using the adjacent sector if the sector is a sector capable of recording and reproducing user information in the data area and is not used. When the host computer accesses the disk-shaped recording medium, the host computer refers to the use prohibition list to avoid the sector adjacent to the sector in which the predetermined information is recorded. Features.

According to a fifteenth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for recording / erasing / reproducing information on / from a disk-shaped recording medium; a recording circuit for performing recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing an output; a servo circuit for applying servo to the head; and a controller for controlling the head, a recording circuit, a reproducing circuit, and a servo circuit. The controller specifies a sector for recording predetermined information. Processing, a process of specifying an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a track having a sector in which the predetermined information is to be recorded, and recording and reproducing of the user information in the data area by the specified inner circumferential adjacent track and the outer circumferential adjacent track Processing to determine whether the area is a possible area and whether or not the inner adjacent track and the outer adjacent track are unused. Judgment processing, and if the sector is a sector in which user information in the data area can be recorded and played back and is not unused, information recorded in an adjacent track is replaced with another area and the adjacent track is used. A process for registering the information in the prohibition list and a process for registering an adjacent track to the use prohibition list when the sector is a sector in which the user information of the data area can be recorded and reproduced and is not used, are performed by the host computer. When the recording medium is accessed, access is made by avoiding a track adjacent to a sector in which the predetermined information is recorded by referring to the use prohibition list.

According to a sixteenth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, a recording circuit, a reproducing circuit, and a servo circuit.The controller includes a sector for recording predetermined information. A process for specifying the sector adjacent to the sector on which the predetermined information is to be recorded on the inner circumference adjacent track and the outer circumference adjacent track adjacent to the track having the sector for recording the predetermined information; A process of determining whether the peripheral adjacent sector and the outer peripheral adjacent sector are areas in which user information in the data area can be recorded and reproduced, and If the user information in the area is an area in which recording and reproduction of user information is possible, processing for correcting the disk layout is performed so that the adjacent sector becomes logically inaccessible, and the host computer accesses the disk-shaped recording medium. In this case, access is made by avoiding a sector adjacent to a sector in which the predetermined information is recorded by referring to the modified disk layout.

According to a seventeenth aspect of the present invention, there is provided an information recording / reproducing apparatus, comprising: a head for performing recording / erasing / reproducing on a disk-shaped recording medium; a recording circuit for recording on the disk-shaped recording medium by the head; A reproducing circuit for reproducing the read signal; a servo circuit for applying servo to the head; and a controller for controlling the head, a recording circuit, a reproducing circuit, and a servo circuit.The controller includes a sector for recording predetermined information. A process of specifying, a process of specifying an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a track having a sector for recording the predetermined information, and a process of specifying the specified inner circumferential adjacent track and the outer circumferential adjacent track by using the user information of the data area. A process of determining whether the area is a recordable / reproducible area and an area capable of recording / reproducing user information in a data area If the host computer accesses the disk-shaped recording medium, a process is performed to correct the disk layout so that the adjacent track becomes logically inaccessible. It is characterized in that access is made while avoiding a track adjacent to a sector in which predetermined information is recorded. The invention according to claim 18 is the invention according to claims 8 to 1
7. The information recording / reproducing apparatus according to any one of items 7, wherein the disc-shaped recording medium is an optical disc that records on both lands and grooves.

[0025]

[0026]

[0027]

[0028]

[0029]

The present invention relates to a disk-shaped recording medium such as a magnetic disk medium and an optical disk, and an information recording / reproducing apparatus, and has the following features. In the disk-shaped recording medium of the present invention, tracks are formed concentrically or spirally, and the tracks are divided into a plurality of sectors, and a physical address is assigned to each sector. In response to an access request from a host computer or the like, a logical address specified by the host computer is associated with the above-described physical address, so that a desired area of the data area can be accessed. On the other hand, the disc-shaped recording medium has a lead-in area / lead-out area that is automatically accessed when the disc-shaped recording medium is mounted, for example, and is not accessed during normal data access, regardless of the command of the host computer.

[0031]

In the first aspect of the present invention, adjacent sectors are registered in the defect list as defective areas. In the second aspect of the present invention, the inner peripheral adjacent track and the outer peripheral adjacent track are each set as a defective area. Register on the defect list. According to the first aspect of the present invention, adjacent sectors are registered in the defect list as defective areas. However, in the third aspect of the present invention, adjacent sectors are registered as a use prohibited area in the use prohibition list.

[0033] In the invention of claim 3, wherein, had been decided to register to use the adjacent sectors as prohibited area prohibited list, the invention of claim 4, wherein, using each track the inner circumference adjacent track and the outer adjacent track Register it as a prohibited area in the use prohibition list. Claims 3 and 4
The described invention has an advantage that by using a use prohibition list different from the defect list, it is possible to return to a usable state when it is no longer necessary to prohibit use.

According to the fifth aspect of the present invention, the disk layout is modified so that adjacent sectors are set as use prohibited areas and are logically inaccessible.
In the invention described in the sixth aspect, the disk layout is modified so that the inner adjacent track and the outer adjacent track are set as the use-prohibited area for each track and are logically inaccessible. Also,
In the first to sixth aspects of the present invention, the predetermined information can be disk management information for managing the file data arrangement on the disk.

As the disk-shaped recording medium according to the first to seventh aspects of the present invention, an optical disk using both lands and grooves can be considered. The on-disk recording medium of the present invention is not limited to this, and includes a magnetic disk, a magneto-optical disk, and the like.

According to the ninth aspect of the present invention, the controller performs a process of registering the adjacent track in the defect list.
In the twelfth aspect , the controller performs a process of registering the adjacent sector in the defect list. According to the thirteenth aspect , the controller performs a process of registering the adjacent track in the defect list. In the invention according to claims 8 to 17 ,
As the disc-shaped recording medium, an optical disc that records on both lands and grooves can be used. Claim 8
The invention described in the above is suitable for recording and reproducing information on the disk-shaped recording medium according to the first aspect of the invention, and the invention according to the twelfth aspect stores information on the disk-shaped recording medium according to the third aspect of the invention. Suitable for recording and playback. Claims
The invention according to the thirteenth aspect is suitable for recording and reproducing information on the disk-shaped recording medium according to the fourth aspect, and the invention according to the sixteenth aspect records and reproduces information on the disk-shaped recording medium according to the fifth aspect. Suitable to do. Further, claim 17
The invention described is suitable for information on the disk-shaped recording medium according to the invention of claim 6, wherein for recording and reproduction.

[0037]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram schematically illustrating a disk-shaped recording medium according to an embodiment of the present invention, FIG. 2 is an explanatory diagram schematically illustrating the disk-shaped recording medium, and FIG. FIG. 4 is a configuration diagram illustrating an initial defect list, FIG. 4 is a configuration diagram illustrating a secondary defect list of the disk-shaped recording medium, FIG. 5 is an explanatory diagram illustrating addresses of the disk-shaped recording medium, and FIG. And FIG. 7 is a block diagram showing an example of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium, and FIG. 8 is an optical disk recording / reproducing apparatus used for the disk-shaped recording medium. FIG. 9 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium;
FIG. 10 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.
Is a flowchart showing processing of the optical disk recording / reproducing apparatus used for the disk-shaped recording medium, FIG. 12 is a flowchart showing processing of the optical disk recording / reproducing apparatus used for the disk-shaped recording medium, and FIG. FIG. 14 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the medium, FIG. 14 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the same disk-shaped recording medium, and FIG. FIG. 16 is a flowchart showing processing of the reproducing apparatus, and FIG. 16 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.
7 is a flowchart showing processing of the optical disk recording / reproducing apparatus used for the disk-shaped recording medium, FIG. 18 is a schematic diagram schematically showing tracks of the optical disk as the disk-shaped recording medium, and FIG. FIG. 20 is a schematic diagram schematically showing an optical disc as a recording medium, FIG. 20 is an explanatory diagram for explaining sectors of the optical disc as the disc-shaped recording medium, and FIG. 21 is a diagram for explaining sectors of the optical disc as the disc-shaped recording medium. FIG.

The disk-shaped recording medium has, for example, a groove track 221 and a land track 222 formed in a double spiral as in the example of the optical disk 220 shown in FIG. ing. Also, as shown in FIG.
0 indicates a lead-in area 231 and a lead-out area 232 which are arranged at the innermost and outermost areas and store attribute data and defect management information relating to the medium itself.
And a data area 233 for recording and reproducing user information
There is something consisting of. The data area 233 may be divided into a plurality of zones.
A user area for recording and reproducing data, and a spare area, which is a set of sectors that substitute for the defective sector when a sector of the user area is defective, or when the sector becomes defective during use, It is divided into a guard area which is a buffer area between zones.

In an optical disk in which a data area is divided into a plurality of zones using both lands and grooves, lands and grooves may be treated as different zones within the same zone. Physical addresses are allocated to all sectors on the disk-shaped recording medium as shown in FIG. Segmentation of the disc-shaped recording medium, the lead-in area 102, the user area 111 _{x (x} = 1~n), each spare area 112 _x, each of the guard areas 113 _x, the physical address of the start sector of the lead-out area 103 Are described in a disk layout that defines the length of the area.
Table 1 shows an example of the disk layout.

[0040]

[Table 1]

The data layout stored in the lead-in area 102 and the lead-out area 103, that is, the physical addresses of the storage sectors and their contents are also described in the disk layout. Basically, the user can record and play back data via the host computer as shown in FIG.
Is an area where logical addresses are assigned as shown in 1, is a user area, part of the sector in the user area by a defect 114 ₂ etc., may also be replaced by a sector of the spare area. As a defect management method, a method of sequentially applying a sector slip replacement method using an initial defect list and a linear replacement replacement method using a secondary defect list is generally used. FIG. 21 shows the case of the slip replacement method. Lead-in area 102, lead-out area 10
Normally, the information recording / reproducing apparatus performs recording / reproducing using the physical address without being accessed from the host computer. In order not to use the sectors adjacent to the sector for recording the predetermined information on the inner circumference adjacent track and the outer circumference adjacent track adjacent to the track having the sector for recording the predetermined information, the disk-shaped recording shown in FIG. In the medium 200, the following is performed. When predetermined information is recorded in the sector A of the disk-shaped recording medium 200, by defining a disk layout in which information is not recorded in the sectors B and C, it is possible to prevent adjacent sectors from being used. Since the disk layout describes the physical address of the start sector of each area and the length of the area, this information is rewritten so that information is not recorded in the sectors B and C.

In order not to use the inner adjacent track and the outer adjacent track adjacent to a track having a sector for recording predetermined information, the disk-shaped recording medium 210 shown in FIG. When predetermined information is recorded in the sector D of the disc-shaped recording medium 210, information is recorded in the sectors E1 to En and the sectors F1 to Fn corresponding to the inner and outer tracks of the track having the sector D. By defining a disk layout in which no recording is performed, it is possible to realize that adjacent tracks are not used. Disc-shaped recording medium 2 shown in FIG.
By defining that information is not recorded only in the adjacent sectors B and C as in 00, it is possible to save an area and improve data reliability. On the other hand, by prohibiting the use of the entire track including the adjacent sector as shown in FIG. 2, the security is further improved.

The lead-in area 102 and the lead-out area 103 store attribute data relating to the medium itself, defect management information, and the like. In order to apply a general defect management method as described above, the defect management information includes an initial defect list and a secondary defect list. If the information in this part cannot be read out, no matter how much the data area is normally maintained, and even if error correction or the like is performed, the fatal defect that the data area part will be inaccessible will occur. Become. In this embodiment, the lead-in area 102 and the lead-out area 10
By protecting the important information No. 3 by the above-described method, a highly reliable disk-shaped recording medium can be provided.

The disk shown in FIG. 1 is used to determine, as a defective area, a sector adjacent to the sector on which the predetermined information is to be recorded on an inner peripheral adjacent track and an outer peripheral adjacent track adjacent to a track having a sector for recording the predetermined information. Recording medium 2
In 00, the following is performed. Disk-shaped recording medium 2
When predetermined information is recorded in sector A of 00 {when file management information such as a file allocation table (FAT) or a root directory is recorded in a sector in the data area}, sectors B and C are registered in the defect list. This makes it possible to make the adjacent sector a defective area. When accessing a sector in the data area using a logical address from the host, the logical address is converted to a physical address based on the disk layout and the defect management information, and then accessed. Therefore, by registering the addresses of the sectors B and C whose use is to be prohibited in the defect management information, it is possible to make the sectors B and C inaccessible.

There are the following methods for registering the addresses of the sectors B and C in the defect management information. Skip the defective sector and use the next sector only if it does not affect the logical addresses of other sectors already recorded.
Sectors B and C can be registered in the initial defect list for applying the sector slip replacement method. If the above condition is not satisfied, the sector B is added to the secondary defect list necessary for applying the linear replacement alternative method, in which replacement is performed for each correction block composed of a plurality of sectors without performing a condition determination. , C can also be registered. The initial defect list PDL has, for example, a configuration as shown in FIG. 3, in which physical addresses of defective sectors are registered in order of defect registration numbers. The secondary defect list SDL has a configuration as shown in FIG. 4, in which the physical address of the head sector of the defective block and the physical address of the head sector of the replaced block are registered in association with each other.

In order to make the inner adjacent track and the outer adjacent track adjacent to a track having a sector for recording predetermined information a defective area, the disk-shaped recording medium 2 shown in FIG.
In 10, the following is performed. Disk-shaped recording medium 2
When the predetermined information is recorded in the tenth sector D, the sector E
By registering the sectors 1 to En and the sectors F1 to Fn in the defect list, it is possible to make the adjacent track a defective area. The selection of whether the registration destination is the initial defect list PDL or the secondary defect list SDL is the same as in the case of the disc-shaped recording medium 200 shown in FIG. The disc-shaped recording medium shown in FIG. 1 is used to set a sector adjacent to the sector on which the predetermined information is recorded on the inner adjacent track and the outer adjacent track adjacent to the track of the sector on which the predetermined information is to be recorded as a use prohibited area. In 200, the following is performed. When predetermined information is recorded in the sector A of the disk-shaped recording medium 200 shown in FIG. 1, by registering the sector B and the sector C in the use prohibition list,
It is possible to realize an adjacent sector as a use prohibited area. Since the use prohibition list is used in the same manner as the defect list, two types of an initial use prohibition list having the same format as the initial defect list PDL and a secondary use prohibition list having the same format as the secondary defect list SDL can be considered.

Sectors B and C can be registered in the initial use prohibition list only when the defect registration in the initial use prohibition list does not affect the logical address of another sector already recorded. When the above conditions are not satisfied, the sectors B and C can be registered in the secondary use prohibition list without performing the condition determination. In order to set the inner adjacent track and the outer adjacent track adjacent to the track of the sector in which the predetermined information is to be recorded as the unusable area, the disk-shaped recording medium 210 shown in FIG. When the predetermined information is recorded in the sector D of the disk-shaped recording medium 210, the sectors E1 to En and the sector F
By registering 1 to Fn in the use prohibition list, it is possible to make the track a use prohibition area. The selection of whether the registration destination is the initial use prohibition list or the secondary use prohibition list is the same as in the above case.

As described above, if the information is registered separately from the defect list in the form of a use prohibition list instead of the defect list,
It can be easily revived later when it is no longer necessary to use it. FIG. 1 shows an example in which a sector adjacent to the sector on which the predetermined information is to be recorded is located on the inner adjacent track and the outer adjacent track adjacent to the track having the sector for recording the predetermined information. In the disk-shaped recording medium 200 shown in (1), when the predetermined information is recorded in the sector A, the disk layout is modified so that the logical addresses are not allocated to the sectors B and C, thereby disabling the logical access to the sector. Can be realized. As a method of modifying the disk layout, the start sector of the corresponding user area is G,
Assuming that the end sector is H, as shown in FIG. 5, the user area is divided and registered from sector G to sector B-1, from sector B + 1 to sector C-1, and from sector C + 1 to sector H. As shown, a system from sector G to sector B-1, from sector C + 1 to H, a system from sector G to sector B-1 and a sector C +
There is a system from 1 to sector H.

In order to make logically inaccessible the inner adjacent track and the outer adjacent track adjacent to a track having a sector in which predetermined information is recorded, the disk-shaped recording medium 210 shown in FIG. , As follows. When predetermined information is recorded in the sector D of the disk-shaped recording medium 210, the disk layout is modified so that the logical addresses are not allocated to the sectors E1 to En and the sectors F1 to Fn, so that the logical access to the track can be performed. Disabling can be realized. As a method of modifying the disk layout, assuming that the start sector of the relevant user area is G and the end sector is H, the user area is from sector G to sector E1-1, from sector En + 1 to sector F1-1, and sector F
The method of dividing and registering from n + 1 to sector H, sector G
To sector E1-1, sector Fn + 1 to sector H
, A method from sector G to sector E1-1, a method from sector Fn + 1 to sector H, and the like.

Here, as the predetermined information recorded in the data area, disc management information such as arrangement information of data recorded in the data area can be considered. For example, ISO-
This is a file allocation table or a root directory in the 9293 system. In order to use every other track in the predetermined area, the optical disc 220 shown in FIG. 18 is configured as follows. In the optical disk 220, by modifying the disk layout so that only land tracks are used in a predetermined area, it is possible to use every other track in the predetermined area. Assuming that the unused groove track area is from sector J to sector K, the method of correcting the disk layout is as follows. When the start sector of the relevant user area is G and the end sector is H, the user area is changed from sector G to sector G. J-1
Up to the sector K + 1 to the sector H. Similarly, as the information to be recorded in the predetermined area, disk management information can be considered.

FIG. 7 is a diagram schematically showing a configuration example of an optical disk recording / reproducing apparatus according to the present invention. As shown in FIG. 7, the optical disk recording / reproducing apparatus includes a motor 1, a head 2, a recording circuit 3, a reproducing circuit 4, a servo circuit 5, a controller 6, and a memory 7. Motor 1
The optical disk 10 is rotated under the control of the servo circuit 5. The head 2 includes a laser, an optical system, a feeding device, and the like. The head 2 moves along the track of the optical disk 10 under the control of the servo circuit 5. At this time, under the control of the recording circuit 3, the head 2 records the data as an information mark on this track with the recording laser power. Further, under the control of the reproducing circuit 4, the reflected light by the reading laser power is received from the information mark of the optical disk 10.

When receiving a data recording instruction and data to be recorded from the controller 6, the recording circuit 3 controls the head 2 so as to output laser power for recording, and sends the data to the head 2. Upon receiving an instruction to reproduce data from the controller 6, the reproducing circuit 4 controls the head 2 so as to output laser power for reading, and reproduces data based on the output from the head 2. When the servo circuit 5 receives data to be reproduced by the reproduction circuit 4 via the controller 6, the servo circuit 5 controls the rotation of the motor 1 based on the data. Further, the servo circuit 5 controls the movement of the head 2 in accordance with an instruction from the controller 6 when recording and reproducing data. The memory 7 stores the defect management information, the disk layout information, and the like read from the disk-shaped recording medium under the control of the controller 6. Access to the disk-shaped recording medium is performed by performing logical-physical address conversion based on the information in the memory 7 thereafter.

The optical disk 10 is a disk medium capable of recording and reproducing on both land tracks and groove tracks. The controller 6 includes the following. As a defect management method of the optical disk recording / reproducing apparatus including the controller 6, a method of sequentially applying the sector slip replacement method using the above-described initial defect list and the linear replacement replacement method using the secondary defect list is adopted. I do. Controller 6 of the optical disk recording / reproducing device
Performs the processing shown in FIG. 8 when recording the predetermined information. Processing for specifying a sector for recording predetermined information (step SA
1) and a process of identifying the sector adjacent to the sector on which the predetermined information is to be recorded on the inner peripheral adjacent track and the outer peripheral adjacent track adjacent to the track having the sector for recording the predetermined information (step SA2). After step SA2, the controller 6 performs processing (step SA3) to determine whether the specified inner peripheral adjacent sector and outer peripheral adjacent sector are areas in which user information of the data area can be recorded and reproduced.

If it is determined in step SA3 that the data area is an area in which user information can be recorded and reproduced, the controller 6 performs a process of registering an adjacent sector in a defect list (step SA4). After step SA4, the controller 6 performs a process of determining whether or not there is additional registration for the defect (step SA5). If there is additional registration in step SA5, the controller 6 performs the above-described defect list sorting process (step SA6), and ends the process. If there is no additional registration, the controller 6 ends the process without performing step SA6. When the host computer 400 accesses the disk-shaped recording medium in steps SA1 to SA6, the adjacent sector is registered in the defect list. It is not recorded.

Only when the logical address of another sector already recorded is not affected, the adjacent sector can be registered in the initial defect list for applying the sector slip replacement method. When the influence is exerted or when the condition determination is not performed, the adjacent sector is registered in the secondary defect list for applying the linear replacement alternative method. Here, the predetermined information is, for example, a file allocation table, a root directory, and the like in the ISO-9293 system. The controller 6 also includes the following. When recording the predetermined information, the controller 6 performs defect registration for all sectors on adjacent tracks. That is, as shown in FIG. 9, the controller 6 performs the processes of steps SB1 and SB2 which are the same as steps SA1 and SA2 of FIG. When step SB2 ends, the controller 6 performs a process (step SB3) of determining whether the specified inner circumferential adjacent track and outer circumferential adjacent track are areas in which the user information of the data area can be recorded and reproduced. After step SB3, the controller 6
Is the same step SB as steps SA4 to SA6 in FIG.
4 to SB6 are performed.

The controller 6 includes the following. The controller 6 performs a process shown in FIG. 10 when recording the predetermined information. That is, the controller 6 performs a process of specifying a sector in which the predetermined information is to be recorded (step SC1), and stores the predetermined information on the inner circumference adjacent track and the outer circumference adjacent track adjacent to the track having the sector where the predetermined information is to be recorded. A process for specifying a sector adjacent to the sector to be recorded (step SC2) is performed. When step SC2 ends, the controller 6 determines whether or not the specified inner peripheral adjacent sector and outer peripheral adjacent sector are areas in which user information in the data area can be recorded and reproduced (step SC3). And whether the outer adjacent sector is unused or not (step S
And C4). If it is determined in step SC4 that the sector is a sector in which the user information in the data area can be recorded and reproduced and the sector is not unused, the information recorded in the adjacent sector is replaced with another area (step SC5). Processing for registering this adjacent sector in the defect list (step S
Perform C6).

Also, in step SC4, even if the sector is a sector in which the user information in the data area can be recorded and reproduced and is not used, the process of step SC6, that is, the process of registering the adjacent sector in the defect list is performed. . Step S
After C6, the controller 6 performs a process of determining whether or not there is additional registration in the defect list (step SC7). When there is additional registration, the controller 6 performs a process of sorting the defect list (step SC8), and ends the process. If there is no additional registration, the process ends without performing step SC8. By the processing of steps SC1 to SC8, when the optical disk 10 is accessed from the host computer 400, the optical disk recording and reproducing apparatus can avoid adjacent sectors by referring to the defect list.

The controller 6 also includes the following. The controller 6 performs a process shown in FIG. 11 when recording the predetermined information. That is, the controller 6 specifies a sector in which the predetermined information is to be recorded (step SD1), and specifies an inner peripheral adjacent track and an outer peripheral adjacent track to the track where the sector in which the predetermined information is to be recorded (step SD2). ) And do. When step SD2 ends, the controller 6 determines whether or not the specified inner peripheral adjacent track and outer peripheral adjacent track are areas in which the user information of the data area can be recorded / reproduced (step SD3). And a process of judging whether or not the outer track is unused (step SD4). When step SD4 is completed, the controller 6 proceeds to steps SC5 to SC in FIG.
Steps SD5 to SD8 which are the same as C8 are performed.

The controller 6 also includes the following. When recording the predetermined information, the controller 6 performs defect registration for all sectors on adjacent tracks. That is, as shown in FIG. 12, the controller 6 performs the processing of steps SE1 to SE3 which are the same as steps SC1 to SC3 of FIG. Step SE3
If the data area is an area where the user information can be recorded and reproduced, the controller 6 performs a process of registering the adjacent sector in the use prohibition list (step SE4). After step SE4, the controller 6 determines whether or not there is additional registration in the use prohibition list (step S4).
Perform E5). When there is additional registration, the controller 6
The use prohibition list is sorted (step SE6), and the process ends. If there is no additional registration, the controller 6 ends the process without performing step SE5.

When the optical disk 10 is accessed from the host computer 400 by the processing of steps SE1 to SE6, the use prohibition list is combined with the defect list and used as a new defect list, so that the adjacent sectors are in the defect list. Is not recorded in an adjacent sector. The adjacent sector can be registered in the initial use prohibition list in the same format as the initial defect list PDL only when the sector slip replacement method does not affect the logical address of another sector already recorded. In the case where the influence is exerted or when the condition determination is not performed, the adjacent sector is registered in the secondary use prohibition list having the same format as the secondary defect list SDL.

The use prohibition list is unique to each of the optical discs 10 like the defect management information, and thus needs to be stored by a method such as recording it on a medium like the defect management information. The controller 6 also includes the following. When recording the predetermined information, the controller 6 performs the use prohibition registration for all the sectors on the adjacent track. That is, as shown in FIG. 13, the controller 6 performs a process of specifying a sector in which the predetermined information is to be recorded (step SF1), and an inner peripheral adjacent track and an outer peripheral adjacent track adjacent to a track having the sector in which the predetermined information is to be recorded. (Step SF2).

When step SF2 is completed, the controller 6 performs a process (step SF3) to determine whether the specified inner peripheral adjacent track and outer peripheral adjacent track are areas in which the user information of the data area can be recorded and reproduced. When step SF3 is completed, the controller 6 executes steps SF4 to SE6, which are the same as steps SE4 to SE6 in FIG.
The processing of SF6 is performed. The controller 6 also includes the following. The controller 6 performs a process shown in FIG. 14 when recording the predetermined information. That is, the controller 6 specifies the sector in which the predetermined information is to be recorded (step SG1), and records the predetermined information on the inner adjacent track and the outer adjacent track adjacent to the track where the sector for recording the predetermined information is located. (Step SG2) for specifying a sector adjacent to the sector to be performed.

After step SG2, the controller 6
A process of determining whether the specified inner peripheral adjacent sector and outer peripheral adjacent sector is an area where the user information of the data area can be recorded and reproduced (step SG3), and whether the inner peripheral adjacent sector and the outer peripheral adjacent sector are unused. (Step SG4). If it is determined in step SG4 that the sector is a sector in which user information in the data area can be recorded and reproduced and is not unused, the controller 6 substitutes information recorded in an adjacent sector for another area (step SG5). And a process of registering the adjacent sector in the use prohibition list (step SG6). Also,
If it is determined in step SG4 that the sector is a sector in which the user information of the data area can be recorded and reproduced and the sector is not used, the controller 6 performs the process of step SG6, that is, the process of registering the adjacent sector in the use prohibition list. Do.

After step SG6, the controller 6
A process (step SG7) for determining whether or not there is additional registration in the use prohibition list is performed. If there is additional registration, the controller 6 sorts the use prohibition list (step SG8), and ends the processing. If there is no additional registration, the controller 6 does not perform step SG6,
The process ends. When the host computer 400 accesses the disk-shaped recording medium by the processing in steps SG1 to SG8, the use prohibition list and the defect list are combined and referred to as a new defect list to avoid adjacent sectors. It becomes possible.

The controller 6 also includes the following. When recording the predetermined information, the controller 6 performs the use prohibition registration for all the sectors on the adjacent track. That is, as shown in FIG. 15, the controller 6 performs a process of specifying a sector in which the predetermined information is to be recorded (step SH1), and an inner peripheral adjacent track and an outer peripheral adjacent track adjacent to a track having the sector in which the predetermined information is to be recorded. (Step SH2). After step SH2, the controller 6 determines whether or not the specified inner circumferential adjacent track and outer circumferential adjacent track are areas in which the user information of the data area can be recorded and reproduced (step SH3). And a process of determining whether or not the outer adjacent track is unused (step SH4). When step SH4 is completed, the controller 6 proceeds to steps SG5 to SG in FIG.
Steps SH5 to SH8, which are the same as G8, are performed.

The controller 6 also includes the following. The controller 6 performs a process shown in FIG. 16 when recording the predetermined information. That is, the controller 6 performs a process of specifying a sector in which the predetermined information is to be recorded (step SI1), and records the predetermined information on the inner adjacent track and the outer adjacent track adjacent to the track having the sector where the predetermined information is to be recorded. (Step SI2) of specifying a sector adjacent to the sector to be performed. After step SI2, the controller 6 performs processing (step SI3) to determine whether the specified inner peripheral adjacent sector and outer peripheral adjacent sector are areas in which user information of the data area can be recorded and reproduced. If the data area is an area in which the user information can be recorded and reproduced, the controller 6 performs a process of correcting the disk layout so that adjacent sectors are logically inaccessible (step SI4). For example,
When the land track and the groove track are defined as different zones, when recording predetermined information in the sector A of the disk-shaped recording medium 200 shown in FIG. If you modify the disk layout and the one that starts after the following,
The sectors B and C cannot be accessed from the host computer using logical addresses. Various methods for correcting the disk layout can be considered as described above.

Since the modified disk layout is unique to each of the disk-shaped recording media as in the case of the defect management information, it is necessary to store the modified disk layout in a manner similar to recording the defect management information on the medium. is there. Further, the controller 6 includes the following. This controller 6
Performs the processing shown in FIG. 17 when recording the predetermined information. That is, the controller 6 specifies a sector in which the predetermined information is to be recorded (step SJ1), and specifies an inner adjacent track and an outer adjacent track adjacent to the track having the sector in which the predetermined information is to be recorded (step SJ2). ) And do.

After step SJ2, the controller 6
A process (step SJ3) for determining whether the specified inner circumferential adjacent track and outer circumferential adjacent track is an area where the user information of the data area can be recorded and reproduced is performed. If the user area in the data area can be recorded and reproduced, the controller 6 performs processing (step SJ4) for modifying the disk layout so that the adjacent track becomes logically inaccessible, and ends the processing. . If it is determined in step SJ3 that the user information in the data area is not an area in which the user information can be recorded and reproduced, the controller 6 executes
The process ends without performing J4. Step SJ1
By SJ4, the disk layout is corrected so that logical access from the host computer 400 cannot be performed for all sectors on adjacent tracks.

As described above, one embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above-described embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if there is, it is included in the present invention. For example, in addition to the optical disk device, a flexible disk device and a hard disk device are also included in the present invention.

[0070]

As described above, according to the configuration of the present invention, when recording and reproducing the predetermined information, it is possible to eliminate the influence of crosstalk and cross-erasure caused by adjacent tracks.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram schematically illustrating a disk-shaped recording medium according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram schematically illustrating the disk-shaped recording medium.

FIG. 3 is a configuration diagram showing an initial defect list of the disk-shaped recording medium.

FIG. 4 is a configuration diagram showing a secondary defect list of the disc-shaped recording medium.

FIG. 5 is an explanatory diagram illustrating addresses of the disk-shaped recording medium.

FIG. 6 is an explanatory diagram illustrating addresses of the disk-shaped recording medium.

FIG. 7 is a block diagram showing an example of an optical disk recording / reproducing device used for the disk-shaped recording medium.

FIG. 8 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 9 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 10 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 11 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 12 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 13 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 14 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 15 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 16 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 17 is a flowchart showing processing of an optical disk recording / reproducing apparatus used for the disk-shaped recording medium.

FIG. 18 is a schematic view schematically showing tracks of an optical disc as the disc-shaped recording medium.

FIG. 19 is a schematic view schematically showing an optical disk as the disk-shaped recording medium.

FIG. 20 is an explanatory diagram illustrating sectors of an optical disc as the disc-shaped recording medium.

FIG. 21 is an explanatory diagram illustrating sectors of an optical disc as the disc-shaped recording medium.

FIG. 22 is a partial perspective view schematically showing a configuration of a main part of the optical disc.

FIG. 23 is a diagram illustrating a conventional technique.

[Explanation of symbols]

 Reference Signs List 1 motor 2 head 3 recording circuit 4 reproducing circuit 5 servo circuit 6 controller 7 memory 10 optical disk 400 host computer

Claims (18)

(57) [Claims] A track is formed concentrically or spirally, and the track is divided into a plurality of sectors.
A physical address is assigned to the sector, and a lead-in area and / or a lead-out area accessed using the physical address and an address logical-physical conversion from a logical address associated with the physical address are performed. A disk-shaped recording medium having a data area in which a desired sector is accessed, on an inner adjacent track and an outer adjacent track adjacent to a track having a sector for recording predetermined information in the data area. A disk-shaped recording medium, wherein a sector adjacent to the sector in which the predetermined information is recorded is registered in a defect list as a defective area. 2. A track is formed concentrically or spirally, and the track is divided into a plurality of sectors.
A physical address is assigned to the sector, and a lead-in area and / or a lead-out area accessed using the physical address and an address logical-physical conversion from a logical address associated with the physical address are performed. A disk-shaped recording medium having a data area in which a desired sector is accessed, wherein an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a track having a sector for recording predetermined information in the data area are defective. A disk-shaped recording medium which is registered in a defect list as an area. 3. A track is formed concentrically or spirally, and the track is divided into a plurality of sectors.
A physical address is assigned to the sector, and a lead-in area and / or a lead-out area accessed using the physical address and an address logical-physical conversion from a logical address associated with the physical address are performed. a disc-shaped recording medium having a data area in which access is made to the desired sector, among the data area, Ah of the sector for recording predetermined information
Disk-shaped recording medium and registers the disabled list that on the inner peripheral adjacent track adjacent to the track and the predetermined information sector adjacent to the recording sectors on the outer periphery adjacent track as disabled area. 4. A track is formed concentrically or spirally, and the track is divided into a plurality of sectors.
A physical address is assigned to the sector, and a lead-in area and / or a lead-out area accessed using the physical address and an address logical-physical conversion from a logical address associated with the physical address are performed. A disc-shaped recording medium having a data area in which a desired sector is accessed, wherein use of an inner adjacent track and an outer adjacent track adjacent to a track of a sector for recording predetermined information in the data area is prohibited. A disk-shaped recording medium, which is registered in a use prohibition list as an area. 5. A track is formed concentrically or spirally, and the track is divided into a plurality of sectors.
A physical address is assigned to the sector, and a lead-in area and / or a lead-out area accessed using the physical address and an address logical-physical conversion from a logical address associated with the physical address are performed. A disk-shaped recording medium having a data area in which a desired sector is accessed, on an inner adjacent track and an outer adjacent track adjacent to a track having a sector for recording predetermined information in the data area. A disk-shaped recording medium, wherein a disk layout is modified so that a sector adjacent to the sector in which the predetermined information is recorded is set as a use-prohibited area and becomes logically inaccessible. 6. A track is formed concentrically or spirally, and the track is divided into a plurality of sectors.
A physical address is assigned to the sector, and a lead-in area and / or a lead-out area accessed using the physical address and an address logical-physical conversion from a logical address associated with the physical address are performed. A disk-shaped recording medium having a data area in which a desired sector is accessed, wherein an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a track having a sector for recording predetermined information are used in the data area. A disk-shaped recording medium, wherein a disk layout is modified so as to be logically inaccessible as a prohibited area. 7. The disk-shaped recording medium according to claim 1, wherein the predetermined information is disk management information. 8. A head for recording, erasing, and reproducing data on and from a disk-shaped recording medium, a recording circuit for recording on the disk-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproduction circuit, and the servo circuit, wherein the controller specifies a sector for recording predetermined information, and a process for specifying a sector for recording the predetermined information. A process of specifying a sector adjacent to a sector on which the predetermined information is to be recorded on an inner adjacent track and an outer adjacent track adjacent to a certain track; and determining the specified inner and outer adjacent sectors as user information in a data area. To determine whether or not the data area is a recordable / reproducible area. If the host computer has accessed the disk-shaped recording medium, the process refers to the defect list, and the adjacent sector is recorded in the defect list. An information recording / reproducing apparatus, which is accessed while avoiding a sector to be read. 9. A head for recording, erasing, and reproducing data on and from a disk-shaped recording medium, a recording circuit for recording on the disk-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit, wherein the controller specifies a sector for recording predetermined information, and a process for specifying a sector for recording the predetermined information. A process of specifying an inner track and an outer track adjacent to a certain track; and a process of determining whether the specified inner track and the outer track are areas in which user information in the data area can be recorded and reproduced. When the user information in the data area is an area where recording and reproduction can be performed, the adjacent track is registered in a defect list. And when the host computer accesses the disk-shaped recording medium, accesses the track adjacent to a sector where the predetermined information is recorded by referring to the defect list. Recording and playback device. 10. A head for recording / erasing / reproducing data on / from a disc-shaped recording medium, a recording circuit for recording / recording on / from the disc-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit, wherein the controller specifies a sector for recording predetermined information, and a process for specifying a sector for recording the predetermined information. A process of specifying a sector adjacent to the sector on which the predetermined information is to be recorded on the inner adjacent track and the outer adjacent track adjacent to a certain track; Determining whether or not the area is a recordable / reproducible area, and determining whether the inner adjacent sector and the outer adjacent sector are unused. Processing for determining whether or not the user information in the data area is a sector in which recording and reproduction of the user information is possible, and if the user information is not unused, the information recorded in the adjacent sector is replaced with another area, and In the defect list, and when the sector is a sector in which user information in the data area can be recorded and reproduced and is not used, an adjacent sector is registered in the defect list. An information recording / reproducing apparatus characterized in that, when an access is made to a recording medium, an access is made to a sector adjacent to a sector in which the predetermined information is recorded by referring to the defect list. 11. A head for recording, erasing, and reproducing data on and from a disk-shaped recording medium, a recording circuit for recording on the disk-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproduction circuit, and the servo circuit, wherein the controller specifies a sector in which predetermined information is to be recorded, and controls a sector in which the predetermined information is to be recorded. A process of specifying an inner track and an outer track adjacent to a certain track; and a process of determining whether the specified inner track and the outer track are areas in which user information in the data area can be recorded and reproduced. Determining whether or not the inner adjacent track and the outer adjacent track are unused; A process of registering the adjacent tracks in the defect list performs alternative processing information recorded on the adjacent track to another area if it and not the unused recording reproducible sector information,
If the sector is a sector in which the user information in the data area can be recorded and reproduced and is not used, a process of registering an adjacent track in the defect list is performed. If the host computer accesses the disc-shaped recording medium, An information recording / reproducing apparatus comprising: accessing a track adjacent to a sector in which the predetermined information is recorded by referring to the defect list. 12. A head for recording / erasing / reproducing data on / from a disc-shaped recording medium, a recording circuit for recording / recording on / from the disc-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit, wherein the controller specifies a sector for recording predetermined information, and a process for specifying a sector for recording the predetermined information. A process of specifying a sector adjacent to the sector on which the predetermined information is to be recorded on the inner adjacent track and the outer adjacent track adjacent to a certain track; Is a region in which the user information in the data area can be recorded and reproduced. If the host computer accesses the disk-shaped recording medium, the host computer refers to the use prohibition list to the sector for recording the predetermined information. An information recording / reproducing apparatus, which is accessed while avoiding adjacent sectors. 13. A head for recording, erasing, and reproducing data on and from a disk-shaped recording medium, a recording circuit for recording on the disk-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit, wherein the controller specifies a sector for recording predetermined information, and a process for specifying a sector for recording the predetermined information. A process of specifying an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a certain track; and a process of determining whether the specified inner circumferential adjacent track and the outer circumferential adjacent track are areas in which user information of a data area can be recorded and reproduced. Determining whether or not the inner adjacent track and the outer adjacent track are unused; If the sector is a sector in which information can be recorded / reproduced and is not unused, a process of substituting information recorded in an adjacent track into another area and registering the adjacent track in a use prohibition list; If the sector is a sector in which the user information of the area can be recorded and reproduced and is not used, a process of registering an adjacent track in the use prohibition list is performed. If the host computer accesses the disc-shaped recording medium, An information recording / reproducing apparatus for accessing a track adjacent to a sector in which the predetermined information is recorded by referring to the use prohibition list. 14. A head for recording, erasing, and reproducing data on and from a disk-shaped recording medium, a recording circuit for recording on the disk-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproduction circuit, and the servo circuit, wherein the controller specifies a sector in which predetermined information is to be recorded, and controls a sector in which the predetermined information is to be recorded. A process of specifying a sector adjacent to a sector on which the predetermined information is to be recorded on an inner adjacent track and an outer adjacent track adjacent to a certain track; and determining the specified inner and outer adjacent sectors as user information in a data area. Determining whether the area is a recordable / reproducible area, and determining whether the inner circumferential adjacent sector and the outer circumferential adjacent sector are unused. Processing for determining whether or not the user information in the data area is a sector in which recording / reproducing of user information is possible, and if the sector is not unused, the information recorded in the adjacent sector is replaced with another area, and Is registered in the use prohibition list, and the process of registering an adjacent sector in the use prohibition list when the sector is a sector that can record and reproduce the user information in the data area and is not used is performed by the host computer. An information recording / reproducing apparatus, wherein when a disk-shaped recording medium is accessed, an access is made by avoiding a sector adjacent to a sector in which the predetermined information is recorded by referring to the use prohibition list. 15. A head for recording, erasing, and reproducing data on and from a disk-shaped recording medium, a recording circuit for recording on the disk-shaped recording medium by the head, a reproducing circuit for reproducing the output of the head, and a servo for the head. A servo circuit to be applied, and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit. The controller specifies a sector for recording predetermined information, and a track having a sector for recording the predetermined information. A process of specifying an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to the above, and a process of determining whether the specified inner circumferential adjacent track and the outer circumferential adjacent track are areas in which user information of a data area can be recorded and reproduced, A process of determining whether the inner adjacent track and the outer adjacent track are unused, and recording user information in the data area. If the sector is a reproducible sector and is not unused, the information recorded on the adjacent track is replaced in another area and the adjacent track is registered in the use prohibition list. If it is a sector in which information can be recorded and reproduced and if it is not used, a process of registering an adjacent track in the use prohibition list is performed. If the host computer accesses the disc-shaped recording medium, An information recording / reproducing apparatus, wherein an access is made by avoiding a track adjacent to a sector in which the predetermined information is recorded by referring to a prohibition list. 16. A head for recording / erasing / reproducing information on / from a disk-shaped recording medium, a recording circuit for recording / reproducing data on / from the disk-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit, wherein the controller specifies a sector for recording predetermined information, and a process for specifying a sector for recording the predetermined information. A process of specifying a sector adjacent to the sector on which the predetermined information is to be recorded on the inner adjacent track and the outer adjacent track adjacent to a certain track; Is a region in which the user information in the data area can be recorded and reproduced. In this case, the disk layout is corrected so that the adjacent sector becomes logically inaccessible. If the host computer accesses the disk-shaped recording medium, the disk layout is referred to by referring to the corrected disk layout. An information recording / reproducing apparatus, wherein an access is made while avoiding a sector adjacent to a sector in which the predetermined information is recorded. 17. A head for recording, erasing, and reproducing data on and from a disk-shaped recording medium, a recording circuit for recording on the disk-shaped recording medium by the head, a reproducing circuit for reproducing a signal read by the head, A servo circuit for applying servo, and a controller for controlling the head, the recording circuit, the reproducing circuit, and the servo circuit. A process of specifying an inner circumferential adjacent track and an outer circumferential adjacent track adjacent to a certain track; and a process of determining whether the specified inner circumferential adjacent track and the outer circumferential adjacent track are areas in which user information of a data area can be recorded and reproduced. If the user area of the data area can be recorded and reproduced, the adjacent track is logically inaccessible. And performing a process of correcting the disk layout so that when the host computer accesses the disk-shaped recording medium, a track adjacent to a sector in which the predetermined information is to be recorded is referred to by referring to the corrected disk layout. An information recording / reproducing apparatus characterized in that the information recording / reproducing apparatus accesses the information recording / reproducing apparatus. 18. The information recording / reproducing apparatus according to claim 8, wherein the disc-shaped recording medium is an optical disc for recording on both lands and grooves.