JPH0322265A - Magneto-optical disk processor - Google Patents

Abstract

PURPOSE:To improve reliability for recording data by providing an error managing area, to which the number of sectors to generate a write error and a read error generating circuit are registered, on a medium and deciding whether the number of the error sectors and the error generating circuit exceed a specified value or not. CONSTITUTION:An error managing area 2, to which the time of error generation and the number of the error sectors are registered, is provided in a magnetic disk medium 1. A write error detector 3 updates the number of the error sectors registered to the error managing area 2 by detecting a write error to the new sector when the data are written. A read error detector 4 updates the time of the error generation registered to the error managing area by detecting a read error when the data are read. A deciding device 5 decides whether the time of the error generation and the number of the error sectors registered to the error managing area 2 exceed the specified value or not.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magneto-optical disk processing device in which data can be rewritten. [Prior Art] In a conventional magneto-optical disk processing device, due to the large storage capacity of the magneto-optical disk medium and the fact that the magneto-optical disk medium is a replaceable medium, it is difficult to perform a verification operation after writing data. If a defect is detected in the sector that was written to, the data that was attempted to be written to the defective sector is transferred to the sector in the group replacement sector area that is allocated to the group consisting of multiple sectors that includes the sector. In addition to adding and writing pointers indicating the replacement source and replacement destination addresses, writing information indicating the relationship between the replacement source sector and replacement sector in the replacement ↑n information map area, and using the group replacement sector area also results in normal operation. If writing cannot be performed, the data that was attempted to be written to the defective sector will be replaced with the replacement source and replacement destination in the sector in the replacement track area provided for the entire area of the magneto-optical disk medium. A pointer indicating the address is added and written, and information indicating the relationship between the replacement sector and the replacement sector is written in the replacement information map area. If normal writing cannot be performed even using the alternate track area, the user is notified that the magneto-optical disk medium is unusable.

(Problem to be Solved by the Invention) As mentioned above, conventionally, if normal writing could not be performed even using the spare storage area, the user was notified that the magneto-optical disk medium was unusable. Therefore, there was a problem in that it was not possible to detect deterioration of the magneto-optical disk medium early and replace the medium, or to detect dirt on the medium and clean it.

An object of the present invention is to improve the reliability of a magneto-optical disk processing apparatus by enabling early detection of deterioration and dirt on a magneto-optical disk medium.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a magneto-optical disk processing device for writing and reading data to and from a magneto-optical disk medium 1, as shown in the structural diagram of FIG. An error management area 2 is provided in which the number of error occurrences and the number of error sectors are registered, and when writing data, by detecting a write error to a new sector, the error sectors registered in the error management area 2 are write error detection means 3 for updating the number of errors; read error detection means 4 for updating the number of error occurrences registered in the error management area 2 by detecting a read error when reading data; and the error management A determination stage 5 is provided for determining whether the number of error occurrences and the number of error sectors registered in area 2 exceed specified values.

[For production]

The magneto-optical disk medium 1 is provided with an error management area 2 in which the number of error occurrences and the number of error sectors are registered. The write error detection means 3 updates the number of error sectors registered in the error management area 2 by detecting a write error in a new sector when writing data, and the read error detection means 4 updates the number of error sectors registered in the error management area 2 when reading data. By detecting an error, the number of error occurrences registered in the error management area is updated. The judgment step 5 judges whether the number of error occurrences and the number of error sectors registered in the error management area 2 exceed specified values. [Example] Next, an example of the present invention will be described in detail with reference to the drawings. FIG. 2 is a block diagram of an embodiment of the present invention, which includes a microprocessor 2l, a host system 22, a host interface 23, a selector 24, and a data bus sofa 25 in which write data and read data are temporarily stored. , an error correction encoder 26 that adds an error correction code to the write data, and an error correction encoder 26 that uses the error correction code to perform error correction, and also calculates the number of bytes in the corrected l block and the data in the block that has undergone error correction processing. an error correction decoder 27, a modulation circuit 28, a demodulation circuit 29, which sends information indicating whether the pattern is a special short pattern, an empty pattern, or another pattern to the microprocessor 2l, which will be described later. ,
The sector format control circuit 30, the drive interface 31, the drive unit 32, the magneto-optical disk medium 33, and the modulation circuit 28. It consists of a demodulation circuit 29, a sector format control circuit 30, and a sector tying control circuit 34.

FIG. 3 is a formant diagram of the storage area of the magneto-optical disk medium 33, including control test areas 4l-1, 4l-2,
Replacement information management area 42, error management area 43, user areas 44-1 to 44-n, and each user insertion area 44-1
It consists of group replacement sector areas 45-l to 45-n provided corresponding to groups 45-1 to 44-n, and a replacement track area 46.

Control test areas 41-1 and 41-2 indicate the type of medium (write-once type, rewritable type), signal polarity. Write power. Rotation speed, modulation mode. It consists of an area for recording sectors/tracks, etc., and a plurality of recording test trunks. The user areas 44-1 to 44-n are areas in which data transferred from the host system 22 is written, and if there is no defect in the user area, all written data is written in the user area. The replacement information map area 42 is the user area 44-
1 to 44-n are defective, group replacement sector area 4
When data is written in 5-1 to 45-n or the replacement track area 46, this is an area for recording information related to replacement processing. Group replacement sector areas 45-1 to 45-
n is a replacement area that is first used when there is a defective sector in the user areas 44-1 to 44-n, and the replacement trunk area 46 is the corresponding group replacement sector area 45-1.
This is a replacement area used when ~45-n becomes used. FIG. 4 is a format diagram of sectors on the magneto-optical disk medium 33, and as shown in fa+ in the figure, one sector 5
1 is composed of an ID (address) section 52, a flag section 53, and a data section 54. The data section 54 includes an address pointer (AP) 54l and an error correction code (EC).
C) 54-2, and the user area 44-l~
In the address pointer 54-1 of the sector on the sector 44-n, the own physical address 55 and the planned physical address 56 of the replacement destination are recorded, as shown in tbl in the same figure, and the group replacement sector areas 45-1 to 45-n and As shown in FIG.
8 is recorded. FIG. 5 is a diagram showing the storage contents of the replacement information map area 42, and one piece of replacement map information 6l stored in the replacement information map area 42 is composed of a replacement source physical address 62 and a replacement physical address 63. be done.

In this embodiment, it is assumed that both the replacement source physical address 62 and the replacement destination physical address 63 are quadruple-written.

FIG. 6 is a diagram showing the information written to the error management area 43, and shows information written to the error management area 43. A flag 7l indicating that execution is in progress or completion of execution, and a certifier address 72
And the number of defective sectors detected during the certification process was 73.
, the number of error sectors 74 detected during write processing, and the number of error occurrences 75 that occurred during read processing are written.

7 to 10 are flowcharts showing processing examples of the microprocessor 2l, and the operation of this embodiment will be explained below with reference to each figure. First, the operation at the time of writing will be explained with reference to FIG.

After the host system 22 outputs the write command, it outputs the write data. A write command is applied to the microprocessor 2l via the host interface 23, and write data is sent to the host interface 23 and the selector 2.
4 and stored in the data buffer 25. The write command includes the physical address of the first sector to be written and the number of blocks of data to be written (one block and one
When a write command is added, the microprocessor 2l first writes
Determine whether the replacement information stored in the replacement information map area 42 of the magneto-optical disk medium 32 has been read (
Step 31). If it is determined that the information has not been read, the replacement information stored in the replacement information manop area 43 is read and stored in an internal memory (not shown).
If it is determined that the reading has been completed, the processing of Stenop S3 is performed immediately. When reading the information in the replacement information map area 42, the microprocessor 21 causes the drive device 32 to move the head onto the replacement information map area 42 via the drive interface 31, and reads the replacement information written in the replacement information map area 42. Instructs to read information. As a result, the drive device 32 continuously outputs the replacement information stored in the replacement information map area 42 from the magneto-optical disk medium 33, and the read replacement information is sent to the drive interface 31, the sector format control circuit 30. Demodulation circuit 29
, error correction decoder 27. The data is stored in the buffer 25 via the selector 24 and sent to the microprocessor 21.
reads the replacement information stored in the data bus sofa 25 via the selector 24 and stores it in the internal memory. Next, the microprocessor sensor 2l selects the sector (
Determine whether information indicating the address of the source sector (original sector) exists in the replacement information stored in internal memory. If it is determined that the original sector does not exist, erase processing is performed on the original sector (step S4), and if it is determined that the original sector does exist, it is erased in the group replacement sector area or replacement track area where the address of the original sector and the address are recorded in correspondence. Erase processing is performed on the sector (replacement sector) (step S5). If the process of step S4 is performed, the microprocessor 2l writes data to the original sector (step S6), and if the process of step S5 is performed, the microprocessor 2l writes data to the replacement sector (step S7). . When writing data to the original sector or replacement sector, the microprocessor 2l notifies the drive device 32 of the address of the sector in which the data is to be written via the drive interface 31, and reads l block worth of write data from the data bus sofa 25. put out. The write data read from the data bath sofa 25 is added with an error correction code by the error correction encoder 26, and is applied to the sector format control circuit 30 via the modulation circuit 2B. After being arranged, the data is sent to the drive device 32 via the drive interface 3l and written to a predetermined position on the magneto-optical disk medium 33. When writing data, as shown in FIG.
2°, a special short pattern 55 shorter than the original data is written in the data section 54 (step 3).
8, S9). The special short pattern is written when the head of the drive device 32 comes to the sector in which data is to be written (there is a defect in the ID section, and the head does not attempt to write data based on the contents of the ID section). Since it is not possible to judge whether or not the sector is on the sector where data was written, the head detects the sector immediately before the sector in which data is to be written, and when the next sector is detected, the head writes the data. This is done by adding an output instruction for a special silat pattern to the sector format control circuit 30, and the sector format control circuit 30 detects a special short circuit by adding an output instruction to the sector format control circuit 30. The special short pattern output from the sector former control circuit 30 is applied to the drive device 32 via the drive interface 31, and
is written to a defective sector.

When writing of the write data or special short pattern is completed, the microprocessor 21 performs a verify check operation to determine whether or not there is an error in the written data, and also to determine whether or not the written data is a special short pattern. (step 310). In this remote check operation, the microprocessor 2l adds the address of the sector in which data has been written to the drive device 32 via the drive interface 31, and instructs the drive device 32 to read the data. As a result, data for the specified apron is read from the magneto-optical disk medium 33 and is applied to the error correction decoder 27 via the drive interface 31, sector format control circuit 30, and demodulation circuit 29. The error correction decoder 27 performs error correction processing on the data for the added l blocks, adds the number of bytes for which the error correction processing has been performed to the microprocessor 2l, and also detects that the pattern of the data for the added l blocks is a special short circuit. The microprocessor 2l sends information indicating whether it is a pattern, an empty pattern, or another pattern.
Add to. The microprocessor 21 determines whether or not it is a helifi error based on whether the number of error-corrected bytes added from the error correction decoder 27 exceeds a predetermined dark value. If the stenop 510 determines that there is no verify error or special short pattern, that is, if the data has been written normally, the microprocessor 21 determines whether there is any data that has not been written. S33), if it is determined that it exists, step S3
Return to the process of ``, and if it is determined that it does not exist, terminate that process. If it is determined in step 310 that it is a verify error or a special short pattern, the number of error sectors 74 during writing written in the error management area 43 is incremented by 1 (step Sll), and that value is determined in advance. It is determined whether or not the value has exceeded a specified value (step S12). If it is determined in step 512 that the number of error sectors 74 has exceeded a predetermined value, the microprocessor 2l
stores a warning status therein, and thereafter sends the user area 44-1 of this magneto-optical disk medium 33 to the host system 22 via the host interface 23.
~ Inform that writing to 44-n is prohibited (
Stethop S34). In this embodiment, the number of error sectors is 7.
4 exceeds a specified value, the host system 22 is notified of the prohibition of writing, but a request for replacing the magneto-optical disk medium 2, a cleaning request, etc. may also be sent to the host system 22. Further, if the step 312 determines that the number of error sectors 74 is not equal to or greater than the specified value, data is written to the sector of the group replacement sector area (step S13). If it is determined, a special short pattern is written (steps S14, S15). after that,
A verify check operation is executed to determine an error and to determine whether the written data is a special short pattern (step S16).

If the steno knob 316 determines that there is neither a heli-fi error nor a special short pattern, the microprocessor 21 writes an alternation message indicating the contents of the executed alternation process in the alternation information map area 42 on the internal memory and magneto-optical disk medium 33. Write information (Stesob 329). When writing replacement information in the replacement information map area 42, in this embodiment, as shown in FIG. 5, the replacement source physical address 62 and the replacement destination physical address 63 are written in four layers. When the processing of the step knob 329 is completed, the microprocessor 2l performs a verify check operation, and in step 329, the microprocessor 2l performs a verify check operation.
Overwritten replacement source physical address 62. It is determined whether two or more of the replacement physical addresses are correct (Stennob s30). If the determination result in step S30 is No, the microprocessor 21 performs the process in step 334, and if the determination result is YES, the number of error sectors written in the error management area 43 of the magneto-optical disk medium 33. 74 by +1 (step S31), and it is determined whether the value exceeds a predetermined value (step S32). Then, if it is determined that the specified value is exceeded, the process of step S34 is performed, and if it is determined that the specified value is not exceeded, step S33 is performed.
Process.

If it is determined in step 316 that it is a verify error or a special short pattern, the microprocessor 2l increments the number of error sectors 74 written in the error management area 43 by 1 (step sl?), and then changes the value to It is determined whether the value exceeds a predetermined value (step 31B). If it is determined in step 318 that the value has exceeded the specified value, step S
34, and if it is determined that the value is not greater than the specified value, data is written in the next sector of the group replacement sector area (steps S19, 320, and 31).
3). If data writing is not successful even if all sectors in the group replacement sector area are used (step 3)
20), the microprocessor 21 moves the head of the drive device ffi 32 onto the alternate trunk area 46, and writes data into sectors in the alternate track area 46 in a front-aligned manner (step 321).
).

When writing data to sectors within the alternate trunk area 46, ! If there is an error in section D, a special short pattern is written (steps 322, S23). After that, perform a verify check operation and get a verify error. A special short pattern is determined (step S24),
Verifyera. If it is determined that it is not a special sheet pattern, the process moves to step S29, and if it is determined that it is a verify error or special sheet pattern, the number of error sectors 74 written in the error management area 43 is increased.
1 (step S 525), it is determined whether the value is equal to or greater than a predetermined value (step S
26), and if it is determined in step S26 that the value is greater than or equal to the specified value, the process of step S34 is performed, and if it is determined that the value is not greater than or equal to the specified value, the next sector of the spare track area 46 is Data writing processing is performed for the data (steps 327, 321).

If the writing cannot be performed normally even after writing to the sector of the alternate track area 46 a predetermined number of times (if the determination result in step 328 is YES), the process of the steno knob 334 is performed. Next, the operation when reading data will be explained with reference to FIG. A read command output from the host system 22 is sent to the microprocessor 21 via the host interface 23.
is added to. The read command includes the address of the first sector to start reading and the number of pronks to read, and upon receiving the read command, the microprocessor 2l starts the process shown in the flowchart of FIG. First, it is determined whether the replacement information written in the replacement information map area 42 of the magneto-optical disk medium 33 has already been read and stored in the internal memory (step S41). If it is determined that the data has not been read, the replacement information written in the replacement information map area 42 of the magneto-optical disk medium 33 is read and stored in the internal memory (step S42), and then the drive interface 3
1, the drive unit M32 is instructed to read the data by adding the address specified by the read command (step S43), and if it is determined that the data has been read, the process of step 343 is immediately performed. By performing the process of step 343, the drive device 32 reads one block of data from the magneto-optical disk medium 33, and
The read data for one block is sent to the drive interface 31, sector formant control circuit 30, demodulation circuit 29. The data is stored in the data buffer 25 via the error correction decoder 27 and selector 24. The error correction decoder 27 performs error correction on the added l profile data, and also determines the number of error-corrected bytes and whether the data pattern is a special short pattern, an empty pattern, or another pattern. The information indicating whether the microprocessor 21 is the same as the one shown in FIG.

When the microprocessor 2l completes the processing of the step S43, the microprocessor 2l determines the sectors on the user areas 44-1 to 44-n that have been read this time based on the information indicating the data pattern sent from the error correction decoder 27. It is determined whether it is an empty sector (step S44), and if it is determined that it is an empty sector, the sector is further determined based on the information indicating the number of bytes for which error correction has been performed sent from the error correction decoder 27. It is determined whether the sector currently read is an error sector or not, and it is also determined whether a special short pattern has been written in the sector based on the information indicating the data pattern (step 345). ．． ．． And in Stethop S45,
If it is determined that the sector that has been read this time is not an error sector and that the written data is not a special short pattern, check the replacement information written in the internal memory (S46), and proceed with the current reading process. It is determined whether the address of the sector in which the process was performed exists in the replacement information (Stenop S47).

In addition, if an error occurs while reading replacement information,
Executes reading of all spare areas and searches for the corresponding sector. Then, in step S47, if it is determined that the replacement information does not exist, the selector 24,
host system 2 via host interface 23
2 (stenop S52). Also, Stenobu S4
In step 7, if it is determined that it exists in the replacement information, the data written in the replacement sector whose address is registered in correspondence with the address of the sector in the user area where the read processing was performed this time is read out. This is instructed to the drive device 32 via the drive interface 3l (step S48). As a result, data is successively outputted from the magneto-optical disk medium 33 and stored in the data bath sofa 25 in the same manner as described above. At this time, the microprocessor 2l determines whether or not the replacement sector that has been read this time is an empty sector based on the information indicating the data pattern output from the error correction decoder 27 (step S49). If it is determined that the sector is empty, a status indicating that it is an empty sector is reported to the host system 22 via the host interface 23. Also, if it is determined that it is not an empty sector, the error correction decoder 2
Based on the information indicating the number of bytes for which error correction has been performed, which is sent from the error correction decoder 27, it is determined whether the replacement sector that has been read this time is an error sector or not. Based on the information indicating the data pattern, it is determined whether a special short pattern is written in the sector (step SSO
>.

If it is determined in step S50 that the sector is not an error sector and the written data is not a special short pattern, that is, if the data has been read normally, the data is read from the replacement sector and the data is Replace the data stored in the sofa 25 with the data in the original sector and transfer it to the host system 22 (Stenop S5
1. S52). After that, the microprocessor 21 determines whether or not there is unread data among the data specified by the read command (step S53),
If it is determined that the sector does not exist, the process ends; if it is determined that the sector exists, the process returns to step S43 to read the data written in the next sector. In addition, if the stenop S50 determines that the error sector or the written data is a special short pattern, that is, if the data reading process cannot be performed normally, the reading process for the replacement sector is performed again. (Step S65), and as a result, if data can be read normally from the replacement sector (Step S65)
If the result of the determination in step 6 is YES), the process is performed on the stenop 351, and if the data could not be read normally, it is determined whether or not a predetermined number of retries have been performed (step s67). If it is determined in step 367 that the retry has been performed a predetermined number of times, the number of error occurrences 75 during reading written in the error management area 43 is increased by +IL (step 368), and then the number of error occurrences 75 is set in advance. It is determined whether the number exceeds a predetermined number (step S69). If it is determined in step S69 that the specified number has not been exceeded, the process is abnormally terminated.
If it is determined that the limit has been exceeded, the microprocessor 21
sets a warning status therein and notifies the host system via the host interface 23 that the magneto-optical disk medium 33 will no longer be used (step S70), and then terminates the process abnormally.

Further, if it is determined in step S44 that the sector on the user area 44-1 to 44-n that has been read this time is an empty sector, and in step S45, if the sector is an error sector or the sector is If it is determined that the written data is a special short pattern, the microprocessor 2l investigates the replacement information stored in the internal memory (Stenop S54) and determines that the 7th address of the above sector exists in the replacement information. Decide whether to do so (
Step S55). If it is determined that the address of the sector is present in the replacement information, the drive interface 3 instructs the drive interface to read data from the replacement sector in which the address of the sector and the address are registered in correspondence.
Instruct the drive device 32 via l (step 35
6). As a result, the data written in the replacement sector is read from the magneto-optical disk medium 33 and stored in the data bumper 25 in the same manner as described above.

At this time, the microprocessor 2l also determines whether data has been successfully read from the replacement sector based on information indicating the number of bytes subjected to error correction processing and the data pattern output from the error correction decoder 27. It is determined whether or not (step S57). If it is determined that the data has been read normally (Stenop S
If the judgment result in Step 57 is No), perform the process of Stenop S51, and if it is judged that it has not been carried out normally,
The read process for the replacement sector is performed again (Stennob 358). As a result of the retry, if it is determined that the data has been read successfully (step S59
If the result is YES in STEP S51, the process is executed in STEP S51, and if the data cannot be read normally even after retrying a predetermined number of times (if the determination result in STEP S60 is YES), the process is executed in STEP S51. Do this.

In addition, if the step S55 determines that the address of the original jealous sector on the user areas 44-1 to 44-n that has been read this time does not exist in the replacement information stored in the internal memory, the original jealous sector is is an empty sector (Stenop S61), and if it is determined to be an empty sector, a status indicating that the sector is empty is notified to the host system 22 via the host interface 23, and the empty sector is If it is determined that this is not the case, read processing is performed on the source sector again (step S
62). As a result, if the data can be read normally (if the judgment result in step S63 is YES), the process in step S51 is performed and the data cannot be read normally even after retrying a predetermined number of times. In this case (if the judgment result of Stenop S64 is YES), Stenop 36
8.

Next, the operation when erasing data will be explained with reference to FIG.

An erase command from the host system 22 is applied to the microprocessor 2l via the host interface 23. The erase command includes the address of the sector where data is to be erased, and when the erase command is added, the microprocessor 2l first reads the replacement information written in the replacement information map area 42 into the internal memory. It is determined whether or not (step S71). If it is determined in step 371 that replacement information has not been read, map 2
After reading the replacement information from the replacement information map area 42 (step S72), l performs the processing of the stenop S73,
If it is determined that the replacement information has already been read, the process of step S73 is immediately performed. In step S73, the microprocessor 2l performs an erase process on the sector specified by the erase command, and then examines the replacement information stored in the internal memory (step S74).
, it is determined whether the address included in the erase command exists in the replacement information (step S75). If it is determined that the address does not exist in the replacement information, the process is terminated, and if it is determined that it does exist, the replacement sector is registered in correspondence with the address included in the erase instruction. (Step 376)
), then terminate the process.

Next, the certification operation will be explained with reference to FIG.

The certification command from the host system 22 is sent to the microprocessor 2l via the host interface 23.
added to. The certify command includes information indicating the number of user areas to perform the certify process, and when the certify command is added, the microprocessor 21 starts the process shown in FIG. It is determined whether or not the replacement information has been read into the internal memory (Stenop S81).

If it has not been read, the replacement information map area 42 is read (step S82), and then the process of step S83 is performed, and if it has been read, the step S is immediately
83 is performed.

In step S83, the flag 7l indicating whether the certification process is not yet executed or completed is written in the error management area 43, and in the next step S84, the certification process is performed based on the flag 71 read in step S83. Determine whether the process has been executed. If the microprocessor 2l determines that the process has been executed, the microprocessor 2l terminates the process; if it determines that the process has not been executed, the microprocessor 2l determines whether or not the certification process has not been executed based on the flag 7l read in step 383. is determined (step S85). If it is determined in step S85 that the certification process has not been executed, the start address of the first user area is set as the certification address, and the flag 71 in the error management area 43 is set to indicate that the certification process is being executed. (Step s8
6.87). Further, if it is determined in step 385 that the certify process is not yet executed, that is, if it is determined that the certify process is being executed, the certify address 72 is read from the error management area 43 (step 38B). Next, the microprocessor 21
reads the sector indicated by the certification address set in step 386 or the certification address read in step 388 (step 389), and determines whether or not the sector is an empty sector (step S90). If it is determined in step S90 that the sector is not an empty sector, it is determined whether the sector is an error sector or a sector in which a special short pattern has been written (step S91). If it is determined in step S91 that the sector is neither an error sector nor a sector in which a special short pattern is written, that is, if it is determined that the sector is a normal sector, the user specified by the certify instruction It is determined whether the certification process for the area has been completed (step S102).

If it is determined in step Sl02 that the certification process for the user area specified by the certification instruction has not been completed, the certification address is incremented by 1 (step S106), and then it is determined whether the certification address is an address in the user area or not. (step 3107), and if it is determined that the address is in the user area, the process returns to step 389; if it is determined that the address is not in the user area, the first address of the next user area is set as the certifier address. After that (Stenop 3108), the process returns to Stenop 389. Furthermore, when the steno panel 3102 determines that the certification process for the user area specified by the certification command has been completed, it is determined whether the certification process for all user areas on the magneto-optical disk medium 33 has been completed ( Step S 1 0
3).

If it is determined that the certification process for all user areas has been completed, the flag 7l in the error management area 43 is set to indicate completion of the certification process (step 3104), and the process is terminated. If it is determined that the certification process for the area has not been completed, the process is terminated after setting the certification address to the start address of the next user area (step sl05). In addition, if it is determined in step 391 that the sector is an error sector or a sector in which a special sheet pattern has been written, the replacement information written in the internal memory is investigated (step 92), and the address corresponds to the sector 0 address mentioned above. It is determined whether there is a replacement sector written as such (step S93). If it is determined that there is no replacement sector, the number of defective sectors 73 in the error management area 43 is increased by 1! t (step S94), and it is determined whether the number of defective sectors 73 has exceeded a specified number (step S95). If it is determined that the number has exceeded the specified number, it notifies the host system 22 of the warning status via the host interface 23 (Step Sll 3), and then terminates abnormally and determines that the number has not exceeded the specified number. If so, the process of step Sl02 is performed. In addition, if it is determined in step 393 that a replacement sector exists, the replacement sector is read (step S109), and then the replacement sector is an error sector or a sector in which a special short pattern is written. It is determined whether or not (step 3110). and,
If it is determined in step Silo that the sector is an error sector or a sector in which a special short pattern has been written, the number of defective sectors written in the error management area 43 is 7.
After adding 1 to 3 (Stetsop Sill), the number of defective sectors is 7
3 is above the specified value (stenop 112), and if it is judged that it is above the specified value, the host system 22 via the host interface 23
Notify warning status to (Stenop S l l 3
). Further, in step S110, if it is determined that the replacement sector is a normal sector, the process of step S102 is performed. Further, if it is determined in step S91 that the sector is neither an error sector nor a sector in which a special short pattern has been written, the process of step S102 is performed.

Additionally, if the steno knob S90 determines that the sector read by the steno knob S89 is an empty sector, it performs processing to write certification data to the sector.
(Stenop S96.S97).

Certify data for SteSob S97. When writing, if there is an error in the ID section, write a special short pattern. Thereafter, the microprocessor 2I performs a verify check operation to determine whether there is an error in the data written in step 397 or whether a special short pattern has been written (step 39).
8). If it is determined in step 398 that this is the sector in which an edge file error or special short pattern has been written, the process of writing certification data to the replacement sector is performed (step S99). At that time, if there is an error in the ID section, a special short pattern is written.

When the process in step S99 is completed, the microprocessor 2l performs a verify check operation, and performs a verify check operation in step S99.
It is determined whether or not there is an error in the data written in step S99, and it is determined whether or not the data written in step S99 is a special short pattern (Stenbu SIOO).
. If it is determined that the write operation was successfully performed in SteSob SIOO, step S10
2, and if it is determined that the process could not be performed normally, the process of writing certification data to the next replacement sector is performed (steps S99, S
lo1). If the data cannot be written normally even after writing the certification data to all sectors in the group replacement sector area, the host system 22 via the host interface 23 Notify the warning status and terminate the process.

〔Effect of the invention〕

As explained above, the present invention provides an error management area on a magneto-optical disk medium in which the number of selectors in which a write error has occurred and the number of times in which a read error has occurred, and the number of error sectors and the number of error occurrences exceeds a specified value. Since the system is equipped with a determination means for determining whether or not the magneto-optical disk medium is damaged or not, it is possible to detect deterioration or dirt on the magneto-optical disk medium earlier than in the conventional example, thereby increasing the reliability of recorded data. There is an effect that can be done.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the present invention, FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is a block diagram of an embodiment of the present invention.
FIG. 4 is a format diagram of the storage area of the disk medium; FIG. 4 is a format diagram of sectors; FIG. 5 is a diagram showing the storage contents of the replacement information map area; FIG. 6 is a diagram showing the storage contents of the error management area; Figure 8 is a flowchart showing an example of processing during write processing, Figure 8 is a flowchart showing an example of processing during read processing, Figure 9 is a flowchart showing an example of processing during erase processing, and Figure 1O is an example of processing during certification processing. FIG. 11 is a flowchart showing the contents written in a sector when there is a defect in the ID section. In the figure, ■, 33... Shining n-air disk medium, 2
．． 43... Error management area, 3... Write error detection means, 4... Read error detection means, 5... Judgment means, 2l... Microprocessor, 22... Host system, 23.・Host interface, 24
...Selector, 25...Data buffer, 26...
- Error correction encoder, 27... Error correction decoder, 28... Modulation circuit, 29... Demodulation circuit, 3
o... Selector format control circuit, 31... Drive interface, 32... Drive device, 4
1-1.41-2... Control test HAT area, 42...
Replacement information map area, 44-1 to 44-n = User area, 451 to 45-n... Group replacement sector area, 46 Replacement track area.

Claims (1)

[Scope of Claims] In a magneto-optical disk processing device that writes and reads data to and from a magneto-optical disk medium, the magneto-optical disk medium is provided with an error management area in which the number of error occurrences and the number of error sectors are registered. and a write error detection means for updating the number of error sectors registered in the error management area by detecting a write error in a new sector when writing data; and detecting a read error when reading data. read error detection means for updating the number of error occurrences registered in the error management area; and detecting whether the number of error occurrences and the number of error sectors registered in the error management area exceed specified values. What is claimed is: 1. A magneto-optical disk processing device, comprising: determining means for making a determination.