JP2003099923A - Disk recording / reproducing apparatus and disk writing / reproducing control method - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent erroneous data recording due to contamination of a disk medium in a disk recording / reproducing apparatus and increase the data reproduction processing efficiency. SOLUTION: A dirt detector 3 detects the presence or absence of dirt from a reproduced signal in sector units. The information management unit 6 adds the sector in which dirt is detected to the control information as a data recording prohibited sector at the time of recording, and records the new control information on the disk medium 1 as new control information. To hold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc recording / reproducing apparatus for recording / reproducing data on / from a disc medium,
The present invention also relates to a disc writing / reproducing control method, and more particularly to a disc recording / reproducing apparatus and a disc writing / reproducing control method for dealing with dirt such as dust and fingerprints on the disc recording surface.

2. Description of the Related Art In recent years, disk media represented by optical disks have been increasing in density and capacity. Among them, ensuring reliability in recording and reproducing data is becoming more and more important.

In particular, regarding recording, dirt such as dust or fingerprints attached to the surface of the disk medium hinders highly reliable data recording. To solve this problem, a cartridge type disk medium in which the disk body is housed in a cartridge has been proposed in terms of the disk structure. That is, it is intended to prevent the adhesion of dirt by not touching the disk body.

[0003]

On the other hand, for the cartridge type disk medium, a structure has been proposed in which the disk body can be taken out from the cartridge from the viewpoint of convenience. As a result, the user can record and reproduce the cartridge as it is, and can take out the disk main body from the cartridge to use it. For example, recording and reproduction can be performed by an apparatus that is not compatible with the cartridge type.

However, in the case of such a structure, dust and fingerprints can be sufficiently adhered to the surface of the disk medium, so that there is a problem that the reliability of data recording is deteriorated due to the dirt. Therefore, there is a method to detect stains in advance before recording and not record to the dirty area, but in this case, if stains accumulate, do not use areas where error correction is possible even if stains are present. Therefore, the total effective area is reduced.

The present invention has been made in order to solve such a problem, and prevents erroneous data recording due to dirt on the disk medium and enhances the error correction capability during reproduction. An object of the present invention is to provide an apparatus and a disc write / playback control method.

[0006]

In order to solve the above problems, a disk recording / reproducing apparatus according to a first aspect of the present invention uses a disk medium capable of recording / reproducing data on a sector-by-sector basis. In a disc recording / reproducing apparatus for recording and reproducing, a unit for reproducing the control information from the disc medium having control information of disc control information indicating a recorded sector of data and recording control information indicating a data recording prohibited sector. From the reproduced control information, a recordable area search unit for recognizing the recorded sectors and the sectors excluding the data recording prohibited sectors as recordable areas, and the presence or absence of dirt in the recordable areas in sector units. When a sector with stains in the recordable area is detected, the sector is provided with a stain detection section for detecting data, and the sector is prohibited from data recording. Add to the recording control information as Kuta, the recording control information, as a new record control data,
The recording control information is recorded on the disk medium and is used as a flag for error correction during reproduction.

As a result, the sector detected as having the dirt is recorded on the disk medium as a data recording prohibited sector, and by avoiding recording on the data recording prohibited sector at the time of data recording, the disk medium becomes dirty. It is possible to reliably prevent erroneous data recording due to
Further, at the time of reproduction, the information of the data recording prohibited sector is used as the position information of the error correction and the erasure error correction process is performed, whereby the error correction capability can be improved and the error correction process can be speeded up. It is possible to effectively utilize the sector in which is detected.

The disk recording / reproducing apparatus according to a second aspect of the present invention is the disk recording / reproducing apparatus according to the first aspect, wherein when the disk medium is reproduced, a dirty sector is detected from the disk medium. At this time, a reproduction control information holding means for holding this sector as a data reproduction defective sector outside the disk medium is provided, and the held reproduction control information is used as an error correction flag.

Thus, the information of the defective sector for data reproduction is used as the position information for error correction, and the erasure error correction process is performed to improve the error correction capability and effectively utilize the sector in which the dirt is detected. You can

The disk recording / reproducing apparatus according to a third aspect of the present invention is the disk recording / reproducing apparatus according to the first aspect, wherein the dirt detecting section detects a dirty sector in the recordable area. In this case, a disc cleaning unit for cleaning the disc medium is provided, and after cleaning by the disc cleaning unit, the stain detecting unit again detects stains on the sectors other than the recorded sectors, and detects a sector having stains. When this is done, this sector is used as a new data recording prohibited sector, and the above-mentioned recording control information is updated. At the time of reproduction, the updated recording control information is used as a flag for error correction processing.

As a result, the sectors of the disk medium can be used more effectively without waste, and erroneous data recording due to dirt can be reliably prevented.
By performing the erasure error correction process by using the information of the new data recording prohibited sector at the time of reproduction, it is possible to improve the error correction capability and speed up the error correction process.

A disk recording / reproducing apparatus according to a fourth aspect of the present invention is the disk reproducing apparatus according to the second aspect, wherein at the time of reproduction, the dirt detecting section detects a sector having dirt in the disk medium. When it is detected, a disc cleaning unit for cleaning the disc medium is provided, and after cleaning by the disc cleaning unit, the stain detection unit again detects stains, and when a sector having stains is detected, this sector is newly updated. As the data reproduction defective sector, the above reproduction control information is updated,
The updated reproduction control information is used as a flag for error correction processing.

As a result, the sectors of the disk medium can be effectively utilized without waste, the reproducing capability against dirt can be improved, and the erasure error correction process is performed by using the information of the sector in which the data reproduction is defective. The error correction capability can be improved and the error correction processing can be speeded up.

The disk recording / reproducing apparatus according to a fifth aspect of the present invention is the disk recording / reproducing apparatus according to the second aspect, wherein the dirt detecting section has the presence or absence of dirt.
The dirt detection unit is configured to be able to detect the dirt level, and when the dirt detection unit detects a sector having dirt, the sector is regarded as a data reproduction defective sector and the reproduction control information holding means holds the information indicating the dirt level. It is held and used as a flag for error correction processing or it is determined that error correction processing is impossible depending on the degree of contamination. As a result, it is possible to improve the efficiency of the error correction process by improving the error correction capability according to the situation of the defective sector for data reproduction, or by omitting the unnecessary error correction process from the beginning when the error correction is impossible. .

A disk recording / reproducing apparatus according to a sixth aspect of the present invention is the disk recording / reproducing apparatus according to the first or second aspect, wherein a plurality of error correction processing unit blocks are formed from the reproduction control information. In the sector, when the number of data reproduction defective sectors exceeding the error correction capability is detected,
It is determined that the error cannot be corrected.

Thus, when it is determined that the error cannot be corrected, unnecessary error correction is omitted from the beginning, so that the efficiency of the error correction process can be improved.

A disk recording / reproducing apparatus according to a seventh aspect of the present invention is the disk recording / reproducing apparatus according to the first or second aspect, wherein a plurality of error correction processing unit blocks are formed from the recording control information. When the number of data recording prohibited sectors exceeding the error correction capacity is detected in the sector,
A means for changing the order of recording sectors is provided so that error correction can be performed, the changed recording sector order is recorded in the recording control information, and at the time of reproduction, reproduction is performed in accordance with the changed sector order. .

As a result, since the recording prohibited sectors are distributed and recorded in the error-correctable range, even if the recording is not successful, the errors can be corrected at the time of reproduction, and the recording-prohibited sector information is recorded. When used as an inner flag, erasure error correction is also possible.

The disk recording / reproducing apparatus according to claim 8 of the present invention is the disk recording / reproducing apparatus according to any one of claims 1 to 7, wherein the disk body is housed in the cartridge and can be taken out from the cartridge. In the case of a disc medium having the following, the disc body has means for detecting history information indicating whether or not the disc body has been taken out from the cartridge, and the history information has been retrieved and taken out. When this is detected, the writing and reproducing speeds on the disk medium are reduced.

As a result, even if the cartridge type disk medium becomes dirty, it is possible to stably and surely record and reproduce data.

The disc write / reproduction control method according to claim 9 of the present invention is the disc write / reproduction control method for recording and reproducing data on a disc medium capable of recording and reproducing data in sector units. , The control information is reproduced from the disc medium having the control information of the disc control information indicating the recorded sector of the data and the recording control information indicating the data recording prohibited sector, and the recorded sector is reproduced from the reproduced control information. , And the sectors other than the data recording prohibited sector are recognized as recordable areas, the presence or absence of stains in the recordable area is detected in sector units, and when a sector having stains in the recordable area is detected, A sector is added to the above-mentioned recording control information as a data recording prohibited sector, and the recording control information is added to the new recording control information. And it was recorded on the disk medium,
At the time of reproduction, the recording control information is used as an error correction flag.

As a result, the sector that is detected as having dirt is recorded on the disk medium as a data recording prohibited sector, and by avoiding recording on this data recording prohibited sector at the time of data recording, the disk medium becomes dirty. It is possible to reliably prevent erroneous data recording due to
Further, at the time of reproduction, the information of the data recording prohibited sector is used as the position information of the error correction and the erasure error correction process is performed, whereby the error correction capability can be improved and the error correction process can be speeded up. It is possible to effectively utilize the sector in which is detected.

A disc write / reproduction control method according to a tenth aspect of the present invention is the disc write / reproduction control method according to the ninth aspect, wherein when the disc medium is reproduced, a dirty sector is detected from the disc medium. At this time, this sector is held as a data reproduction defective sector by the reproduction control information holding means outside the disk medium, and the held reproduction control information is used as an error correction flag.

As a result, the information of the defective data reproduction sector is used as position information for error correction, and the erasure error correction process is performed to improve the error correction capability and effectively utilize the sector in which the dirt is detected. You can

The disc write / reproduction control method according to claim 11 of the present invention is the disc write / reproduction control method according to claim 9, wherein when a dirty sector in the recordable area is detected, The disk medium is cleaned, and after cleaning, the sectors other than the recorded sectors are again detected for dirt, and when a dirty sector is detected, this sector is set as a new data recording prohibited sector and the above recording control information is set. At the time of updating and reproducing, the updated recording control information is used as a flag for error correction processing.

As a result, the sectors of the disk medium can be used more effectively without waste, and erroneous data recording due to dirt can be reliably prevented.
By performing the erasure error correction process by using the information of the new data recording prohibited sector at the time of reproduction, it is possible to improve the error correction capability and speed up the error correction process.

A disc writing / reproducing control method according to a twelfth aspect of the present invention is the disc writing / reproducing control method according to the tenth aspect, wherein a dirty sector in the disc medium is detected during reproduction. , Cleaning the disk medium, after the cleaning, the dirt on the disk medium is detected again, and when a sector having dirt is detected, the sector is set as a new data reproduction defective sector, and the reproduction control information is updated. The updated reproduction control information is used as a flag for error correction processing.

As a result, the sectors of the disk medium can be effectively utilized without waste, the reproducing ability against dirt can be improved, and the erasure error correction process can be performed by using the information of the defective sector for data reproduction. The error correction capability can be improved and the error correction processing can be speeded up.

A disc writing / reproducing control method according to a thirteenth aspect of the present invention is the disc writing / reproducing control method according to the tenth aspect, wherein the degree of contamination is detected in addition to the presence / absence of contamination of the disc medium. A sector having dirt is stored as a data reproduction defective sector together with information indicating the dirt level in the playback control information holding means and used as a flag for error correction processing depending on the dirt level, or the error correction processing is performed. It is judged as impossible.

As a result, the error correction capability is improved according to the situation of the defective sector for data reproduction, or unnecessary error correction processing is omitted from the beginning when the error cannot be corrected, thereby improving the efficiency of the error correction processing. to enable.

A disc writing / reproducing control method according to a fourteenth aspect of the present invention is the disc writing / reproducing control method according to the ninth or tenth aspect, in which an error correction processing unit block is constituted by the replay control information. When a number of data reproduction defective sectors exceeding the error correction capability is detected in a plurality of sectors, it is determined that the error correction is impossible.

Thus, when it is determined that the error cannot be corrected, unnecessary error correction is omitted from the beginning, so that the efficiency of the error correction process can be improved.

A disc writing / reproducing control method according to a fifteenth aspect of the present invention is the disc writing / reproducing control method according to the ninth or tenth aspect, wherein the recording control information constitutes an error correction processing unit block. When a data recording prohibited sector whose number exceeds the error correction capability is detected in a plurality of sectors, the order of the sectors is changed and recorded in the recording control information so that the error correction can be performed, and the change is made at the time of reproduction. The reproduction is performed in the order of the sectors.

As a result, since the record-prohibited sectors are distributed and recorded in the error-correctable range, the error-correction can be performed during reproduction even if the recording is not successful, and the record-prohibited sector information is recorded. When used as an inner flag, erasure error correction is also possible.

A disc writing / reproducing control method according to a sixteenth aspect of the present invention is the disc writing / reproducing control method according to any one of the ninth to fifteenth aspects.
In the case of a disc medium having a structure in which the disc body is housed in the cartridge and is removable from the cartridge, the history information indicating whether or not the disc body has been taken out from the cartridge is searched and taken out. When it is detected that something has happened, the writing and reproducing speeds on the disk medium are reduced.

As a result, even if the cartridge type disk medium is contaminated, data can be recorded and reproduced stably and reliably.

[0037]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram showing a configuration of a disk recording / reproducing apparatus according to Embodiment 1 of the present invention.

In the figure, the disc recording / reproducing apparatus according to the first embodiment includes a reproducing unit 2 for reproducing data of the disc medium 1, an information managing unit 6 for managing control information of the disc medium 1, and a disc medium. 1, a recording unit 9 for recording data on the disk medium 1, an error correction processing unit (not shown) for performing error correction encoding and decoding for recording or reproducing on the disk medium 1, a recordable area searching unit 4, and a recording unit. An information management unit 6 that controls the control information management unit 5 and a dirt detection unit 3 that detects dirt on the surface of the disk medium 1 in sector units.
And a non-recordable display section 8. The reproduction control information management unit 55 will be described in the second embodiment. The cleaning display unit 7 and the disc cleaning unit 10 will be described in the third embodiment.

FIG. 2 is a diagram showing an example of the structure of the disk medium 1. As shown in FIG. 2A, the disk medium 1
Tracks are formed in a concentric circle shape or a spiral shape, and each track is divided into a large number of sectors.
An absolute address called a physical sector address is added to the head of each sector. FIG. 2B shows a sector management system. Tracks are numbered from 0 to T, and sectors in each track are numbered from 0 to S. With such a structure, it is possible to record and reproduce data in sector units.

FIG. 3 is a diagram conceptually showing the structure of the recording area of the disk medium 1. As shown in FIG. 3, a disc,
The recording area of the disk medium 1 is largely a control information area 1a.
And a data recording area 1b, and disk control information, defect management information, and recording control information are recorded in the control information area 1a. The disc control information includes information indicating a recorded sector, parameters necessary for accessing the disc, and the defect management information includes information for managing the defective sector detected from the data recording information 1b. I'm out. The recording control information also includes information indicating a data recording prohibited sector.

Next, the operation of the disc recording / reproducing apparatus according to the first embodiment will be described.

When the disk medium 1 is loaded into this device,
First, the playback section 2 controls the control information area 1 of the disk medium 1.
The control information recorded in a is reproduced. The information management unit 6 stores and holds the reproduced control information. The recordable area search unit 4 in the information management unit 6 searches the recorded sector and the data recording prohibited sector from the disc control information and the recording control information of the reproduced control information, and records the recorded sector and the data recording prohibited sector. Recognize all or part of the sector except for the recordable area. Then, the information management unit 6 instructs the reproduction unit 2 to reproduce the recordable area in the data recording area 1b.

The reproducing section 2 receives the instruction from the information managing section 6 and reproduces the recordable area. At this time, the level of the reflected light of the laser light emitted from the head on the recording surface of the disk medium 1 is output to the dirt detection unit 3. Dirt detector 3
Receives the output of the reproducing unit 2 and detects the presence or absence of dirt on the disk medium 1 in sector units. Specifically, for example, when the state in which the laser reflected light level is smaller than the reference value continues for a time corresponding to the data length for which error correction is impossible, for example, the dirt detection unit 3 has a size that cannot correct data by error correction. It is judged that there are dirt such as sawdust and fingerprints.

The information managing means 6 receives the detection signal output from the dirt detecting section 3. When a dirty sector is detected, the recording control information management section 5 adds this sector to the previously stored recording control information and holds it as a data recording prohibited sector.

Similarly, the contamination detection of the recordable area is sequentially performed for each sector. Each time a dirty sector is detected, the recording control information management section 5 adds this sector to the previously stored recording control information as a data recording prohibited sector and holds it.

When the dirt detection of the recordable area is completed,
The information management unit 6 causes the recording unit 9 to record the held recording control information in the control information area 1 a of the disk medium 1. When the number of data recording prohibited sectors exceeds a predetermined value, the information management unit 6 notifies the unrecordable display unit 8 of
Command warning display.

When performing data recording on the disk medium 1 after performing the above-described operation, the information management unit 6 determines from the held disk control information and recording control information that
Search for recorded sectors and data recording prohibited sectors. Then, the sectors other than the recorded sectors and the data recording prohibited sectors are recognized as recordable areas, and data is recorded in the recognized recordable areas. However, when the number of record-prohibited sectors increases and the size of the recordable area is insufficient, the information management unit 6 instructs the unrecordable display unit 8 to display a warning and stops data recording.

The data recording / reproducing apparatus according to the first embodiment further ignores the information of the data recording prohibited sector in the error-correctable range, recognizes the sectors other than the recorded sector as the recordable area, and records the data. It is possible to At the time of reproduction, the information of the data recording prohibited sector of the data which is ignored and recorded is used as an error position information flag for error correction decoding. It is presumed that there is a reproduction data error in the sector at the position where this flag is added, and the erasure error correction process is performed in the error correction processing unit.

FIG. 5 shows an example of the format of the error correction data array. For example, in the example of FIG. 5, one row consists of 6 rows worth of data, that is, one array of error correction data consists of 32 sectors.
It is assumed to include an outer parity byte of 10 bytes and an inner parity byte of 10 bytes. Normally, product code error correction of disk data is performed in the direction of inner (inner correction) → outer (outer correction) → inner (inner correction), or outer → inner → outer correction capability. Considering high outward direction → inward direction → outward direction, if there is no error position information flag, maximum 8 error corrections in the outward direction, that is,
Error correction for 1 sector and 2 rows is possible. In the first embodiment, since the data recording prohibited sector information is obtained as the error position information (inner flag), the maximum 16 erasure error correction is possible based on this flag,
That is, error correction of 2 sectors + 4 Rows becomes possible.

Also, when processing is performed in the inward direction → outward direction → inward direction, the first inward processing is omitted based on this flag, and the next outward error correction position flag is set. It is possible. In this case, it is flagged
Since the first inward processing of the Row data can be omitted, the error correction processing time can be shortened.

The disc recording / reproducing apparatus according to the first embodiment as described above detects, in sector units, dirt in the recordable area obtained by reproducing the control information recorded in the control information area of the disc medium. However, since the sector detected as having the stain is added to the control information of the disk medium as a data recording prohibited sector, it is possible to reliably prevent erroneous recording due to the stain.

Further, by performing the erasure error correction process by using the information of the data recording prohibited sector at the time of reproduction, it is possible to improve the error correction capability or speed up the error correction process.

(Embodiment 2) A disk recording / reproducing apparatus according to Embodiment 2 of the present invention is dirty at the time of reproduction in order to improve the error correction capability at the time of reproduction and to speed up the error correction processing. The sector in which the dirt is detected by the detection unit is held in the reproduction control information management unit in the information management unit as a defective reproduction sector, and the reproduction control information is used as a flag for error correction.

The disc recording / reproducing apparatus according to the second embodiment has a structure as shown in FIG. 1, as in the first embodiment. The feature of the second embodiment is that when a dirty sector is detected during reproduction, this sector is regarded as a data reproduction defective sector, and the information of the reproduction defective sector is recorded in the information management unit 6 as a recording control information management unit. Apart from 5, it is held in the playback control information management unit 55 in the information management unit 6, and the held information of the defective playback sector is used as an error position information flag for error correction decoding.

Next, the operation of the disc recording / reproducing apparatus according to the second embodiment will be described. Basically, the operation is similar to that of the first embodiment. However, the operation after the dirt detection operation is different from that of the first embodiment.

During reproduction, each time the dirt detection unit 3 detects a dirty sector, the reproduction information management unit 11 holds this sector as a defective data reproduction sector. The error correction processing unit (not shown) obtains the reproduction failure sector information held in the reproduction information management unit 11 as an inner flag.

In the disk recording / reproducing apparatus according to the second embodiment of the present invention as described above, the erasure error correction process is performed from the beginning similarly to the first embodiment by setting the reproduction failure sector information as the inner flag. The error correction capability can be improved.

Further, since error correction is carried out on the basis of the data reproduction defective sector information for all the reproducible sectors, even when reproducing a reproduction-only disc medium,
By using the reproduction failure sector information as the inner flag, erasure error correction can be performed from the beginning, and the error correction capability can be improved.

When a recordable disc medium is used and a disc faithfully recorded in accordance with the record control information is reproduced, the information management section 6 uses the record control information as a sector in which data reproduction fails. Information may be added and used as an inner flag for error correction.

(Third Embodiment) A disk recording / reproducing apparatus according to a third embodiment of the present invention cleans a disk medium when a dirty sector is detected in order to effectively use the sector of the disk medium. The dirt is detected again, the recording control information is updated as a new data recording prohibited sector, and the updated recording control information is used as an error correction flag.

The disk recording / reproducing apparatus according to the third embodiment of the present invention has a structure as shown in FIG. 1 as in the first embodiment. The feature of the third embodiment is that the disk cleaning unit 10 is provided for cleaning the disk medium 1 when a dirty sector is detected during recording.

FIG. 4 is a diagram conceptually showing the structure of the recording area of the disk medium 1 and the recording control information held by the information management unit 6 according to the third embodiment. As shown in FIG.
In the third embodiment, the information management unit 6 uses the disk medium 1
The second recording control information B is stored and held separately from the first recording control information A reproduced from. Recordable area search unit 4
Recognizes the recorded sectors retrieved from the disc control information and the sectors excluding the data recording prohibited sector retrieved from the first recording control information A as recordable areas.

Next, the operation of the disc recording / reproducing apparatus according to the third embodiment will be described. Basically, the first embodiment
Works the same as. However, the operation after detecting a dirty sector is different from that of the first embodiment.

Every time a dirty sector is detected, the recording control information management unit 5 adds this sector to the second recording control information B and stores it as a data recording prohibited sector.
However, at this time, no change is made to the first recording control information A.

When the dirt detection of the recordable area is completed,
The information management unit 6 determines whether the data recording prohibited sector is added to the second recording control information B. When the data recording prohibited sector is added to the second recording control information B, the disk cleaning unit 10 is operated to clean the disk medium 1.

After the cleaning is completed, the dirt detection of the recordable area is executed again. However, at this time, the recordable area search unit 4 ignores the information of the data recording prohibited sector included in the first recording control information A, recognizes the sectors other than the recorded sector as the recordable area, and detects the stain. To execute.

The recording control information management unit 5 resets the second recording control information B before the second stain detection. Then, the sector detected to be dirty in the second dirt detection is added to the second recording control information B as a new data recording prohibited sector and saved.

When the second dirt detection is completed, the information management unit 6 stores the second recording control information B held therein by the recording unit 9.
Is recorded in the control information area 1a of the disk medium 1. That is, the recording control information of the disk medium 1 is the second
The recording control information B is updated. In addition, the information management unit 6
Instructs the cleaning display unit 7 to display a warning when the number of data recording prohibited sectors exceeds a predetermined value.

After recording the data on the disk medium 1 after performing the above-described operation, the information management section 6
The recorded sector and the data recording prohibited sector are searched from the held disk control information and the second recording control information B. Then, the sectors other than the recorded sectors and the data recording prohibited sectors are recognized as recordable areas, and data is recorded in the recognized recordable areas. However, at this time, when the size of the recordable area is insufficient due to the increase in the number of data recording prohibited sectors, the information management unit 6 instructs the unrecordable display unit 8 to display a warning and stops the data recording.

At the time of reproduction, the reproduction unit 2 reproduces from the control information area 1a of the disk medium 1, the recording control information stored and held in the information management unit 6 is used as a data reproduction defective sector, and the data reproduction defective sector is set to an inner flag. As in the first embodiment, the error correction processing section performs error correction processing.

In the disk recording / reproducing apparatus according to the third embodiment as described above, when the dirt detecting section detects a dirty sector, the disk cleaning section
Since the cleaning is automatically executed and the sector where the dirt is present even after the cleaning is executed is described in the control information as a new data recording prohibited sector, the sector of the disk medium can be utilized more effectively and efficiently, and the dirt causes the dirt. It is possible to reliably prevent erroneous data recording.

Further, by using the information of the data recording prohibited sector at the time of reproduction to enable the erasure error correction process from the beginning, it is possible to improve the error correction capability or speed up the error correction process.

Fourth Embodiment The disk recording / reproducing apparatus according to the fourth embodiment of the present invention effectively uses the sectors of the disk medium and reduces the error correction load.
When a sector with dirt is detected during playback, the disk medium is cleaned, dirt is detected again, and the sector with dirt is used as a new data playback defective sector to update the playback control information and the updated playback control information. Is used as a flag for error correction processing.

The disc recording / reproducing apparatus according to the fourth embodiment of the present invention has a structure as shown in FIG. 1 as in the second embodiment. The feature of this embodiment is that, in addition to the recording control information section in the information management section, a disk cleaning section 10 that cleans the disk medium 1 when a dirty sector is detected during reproduction, and a dirt detection again after cleaning. The sector that is determined to have dirt,
The point is that the reproduction control information management unit 55 that holds the data reproduction defective sector is provided.

Next, the operation of the disc recording / reproducing apparatus according to the fourth embodiment will be described. Basically, the second embodiment
Works the same as. When the dirt is first detected during reproduction, the disk cleaning unit 10 cleans the disk medium 1, and after the cleaning, the dirt detecting unit 3 detects the dirt again, and the dirty sector is regarded as a defective reproduction sector. The reproduction control information management unit 55 holds the information on the defective reproduction sector and uses it as an error position information flag for error correction decoding.

As described above, the disk recording / reproducing apparatus according to the fourth embodiment of the present invention automatically executes cleaning when a dirty sector is detected, and the dirty sector remains even after the cleaning is executed. Since the new data reproduction defective sector is described in the reproduction control information, the sector of the disk medium can be more effectively utilized without waste, and the reproduction ability against dirt can be surely improved.

Further, by using the information of the data recording prohibited sector, the erasure error correction process can be performed from the beginning, so that the error correction capability can be improved or the error correction process can be speeded up.

Embodiment 5. The disk recording / reproducing apparatus according to the fifth embodiment of the present invention improves the error correction capability and, in order to improve the efficiency of error correction by omitting unnecessary error correction, the dirt detection unit dirties the sector. At the same time, the degree of dirt is detected, and the sector is stored as a data reproduction defective sector in the reproduction control information management unit together with information indicating the degree of dirt, and used as a flag for error correction depending on the degree of dirt. It is to judge whether it is uncorrectable.

The disk recording / reproducing apparatus according to the fifth embodiment of the present invention has a structure as shown in FIG. 1 as in the second embodiment. One of the features of the present embodiment is that, in addition to the recording control information, when the dirty sector is detected at the time of reproduction, the dirt detection unit 3 determines whether or not the disk medium 1 is dirty and the degree of the dirt. This is the point that when a sector that can be detected and has a stain is held in the reproduction control information management unit 55 as a data reproduction defective sector, information indicating the degree of stain is also held.

Next, the operation of the disc recording / reproducing apparatus according to the fifth embodiment of the present invention will be described. In the fifth embodiment, the dirt detection unit 3 detects the dirt degree in two stages. For example, the dirt detection unit 3 determines that there is dirt when the state in which the laser reflected light level is smaller than the reference value continues for, for example, a time corresponding to the data length that cannot be error-corrected. Then, the laser output power of the reproducing unit 2 is increased, and the same dirt detection is performed again. When the dirt is not detected when the laser power is increased, the dirt degree is determined to be “level 1”. On the other hand, if dirt is detected even if the laser power is increased, the degree of dirt is determined to be “level 2”.

Whenever a dirty sector is detected, the reproduction control information management unit 55 adds this sector to the reproduction control information as a data reproduction defective sector and holds it. At the same time, "level 1" or "level 2" is held in the reproduction control information as the degree of contamination.

On the basis of this reproduction control information, for example, when the number of defective data reproduction sectors of “level 2” exceeds a predetermined value (the number of outer erasure correctable), it is judged that erasure cannot be corrected and Either the outer error correction processing is performed, or the inner error correction is performed first without performing the outer correction processing. If the total number of “level 1” or “level 2” sectors is within a predetermined value, for example, outer erasure correction processing is performed using this reproduction control information as an inner flag. In this way, the reproduction control information is used for the erasure correction or the discrimination algorithm of the error correction process.

As described above, in the disk recording / reproducing apparatus according to the fifth embodiment of the present invention, the error correction processing section determines in advance how to start the correction processing algorithm before starting the determination from the beginning. Therefore, it is possible to improve the efficiency of the error correction process by improving the correction capability according to the situation of the defective sector for data reproduction, or omitting the unnecessary error correction process from the beginning when the sector cannot be corrected.

Sixth Embodiment The disk recording / reproducing apparatus according to the sixth embodiment of the present invention can be performed even when the number of dirty data recording prohibited sectors exceeds a predetermined number
In order to enable error correction, the recording sector order is changed so that the error can be corrected, and at the time of reproduction, the changed recording sector order is reproduced while performing error correction.

The disk recording / reproducing apparatus according to the sixth embodiment of the present invention has a structure as shown in FIG. 1 as in the first embodiment. The feature of the sixth embodiment is that after detecting a dirty sector, the recording sector order is changed so that error-correction can be performed so that the dirty sector is not continuously recorded, and recording / reproducing is performed. .

Next, the operation of the disc recording / reproducing apparatus according to the sixth embodiment of the present invention will be described. When the number of dirty data recording prohibited sectors exceeds a predetermined value (the number of error-correctable sectors), the information management unit 6 can correct the errors by allocating the recording-prohibited sectors outside one error correction processing unit. Change the recording sector order. This recording sector order is previously included in the recording control information at the time of recording, and at the time of reproduction, reproduction is performed according to this recording sector order.

For example, in the case of recording AV data that can be approximately complemented, the data recording prohibited sector is forcibly recorded by increasing the laser power while performing the above operation, and other recordable areas are recorded. The recording is performed with normal laser power. Since the recording-prohibited sectors are distributed and recorded in the error-correctable range, even if the recording is not successful, the errors can be corrected during reproduction. Further, by using the recording-prohibited sector information as an inner flag, erasure correction is possible.

Even when the recording prohibited sector information is divided into "level 1" and "level 2" according to the degree of dirt, sector recording having "level 2" information is prohibited,
The above distributed recording operation may be applied to the sector having the information of "level 1". In this case, more reliable AV recording becomes possible, the dirty sector can be effectively used, and the recordable area can be increased.

Seventh Embodiment A disk write / reproduction control method according to a seventh embodiment of the present invention, in a disk medium having a cartridge storage structure, in order to stably and surely record and reproduce data, a data recording prohibited sector is provided in the disk body. Is detected as history information indicating whether or not the disc is taken out from the cartridge, and when it is detected that the disc body is taken out from the cartridge, the rotational speed of the disc is reduced to perform recording and reproduction.

When the disk medium has dirt such as dust or fingerprints, the disk recording / reproducing apparatus according to the first to sixth embodiments records the dirty sector in the recording control information of the disk medium as a data recording prohibited sector. This recording control information functions as history information indicating whether or not the disk body has been taken out from the cartridge in the case of the disk medium having the cartridge storage type structure.

In the case of a cartridge type disc medium, while the disc body is not removed from the cartridge,
The disk body is unlikely to get dirty by dust or fingerprints. Therefore, it can be said that the data recording prohibited sector is hardly recorded in the recording control information when mounted in the disc recording / reproducing apparatus. However, when the disk body is once taken out from the cartridge, some dirt is attached, and it is considered that the data recording prohibited sector is recorded in the recording control information. That is, this recording control information can be regarded as history information indicating whether or not the disc body has been removed from the cartridge.

Therefore, in the seventh embodiment, when recording and reproducing the data of the cartridge type disk medium,
The information in the data recording prohibited sector is searched to detect whether the disk body has been removed from the cartridge. Then, when it is detected that the disk has been taken out, the rotation speed of the disk is decreased, and the recording and reproduction speeds on the disk medium are decreased.

In the disc recording / reproducing apparatus according to the seventh embodiment as described above, in the disc medium having the cartridge storing type, the data recording prohibited sector is used as history information indicating whether the disc body is taken out from the cartridge. When it is detected that the disk body is removed from the cartridge, the rotation speed of the disk is reduced to perform recording / reproduction, so that data can be stably and reliably recorded and reproduced.

[0094]

According to the disk recording / reproducing apparatus of the first aspect of the present invention, there is provided a disk recording / reproducing apparatus for recording and reproducing data on a disk medium capable of recording and reproducing data in sector units. , Means for reproducing the control information from the disk medium having control information of disk control information indicating a recorded sector of data and recording control information indicating a data recording prohibited sector, and recording means for reproducing the control information from the reproduced control information. The recorded area includes a recorded area retrieving section for recognizing recorded sectors and sectors excluding the data recording prohibited sector as a recordable area, and a contamination detecting section for detecting the presence or absence of contamination in the recordable area in sector units. When a dirty sector in the available area is detected, this sector is added to the above recording control information as a data recording prohibited sector. The recording control information, as a new record control data, recorded on the disk medium, at the time of reproduction,
Since the recording control information is used as an error correction flag, it is possible to reliably prevent erroneous data recording due to dirt on the disk medium by avoiding recording in the data recording prohibited sector during data recording, In addition, by using the information of the data recording prohibited sector as position information for error correction at the time of reproduction and performing erasure error correction processing, it is possible to improve error correction capability and speed up error correction processing, and There is an effect that the sector in which is detected can be effectively used.

According to a second aspect of the present invention, there is provided a disk recording / reproducing apparatus according to the first aspect, wherein when the disc medium is reproduced, a sector having dirt is produced from the disc medium. When it is detected, this sector is held as a data reproduction defective sector outside the disk medium, and a reproduction control information holding means is provided, and the held reproduction control information is used as an error correction flag. By using the information as position information for error correction and performing erasure error correction processing,
There is an effect that the error correction capability is improved and the sector in which the dirt is detected can be effectively used.

According to the disk recording / reproducing apparatus of the third aspect of the present invention, in the disk recording / reproducing apparatus of the first aspect, the dirt detection section causes the sector having dirt in the recordable area. When a disc is detected, a disc cleaning unit for cleaning the disc medium is provided. After cleaning by the disc cleaning unit, the stain detecting unit again detects stains on the sectors other than the recorded sectors, and a sector having stains is detected. When this is detected, this sector is set as a new data recording prohibited sector and the above recording control information is updated.
Since the updated recording control information is used as a flag for error correction processing, sectors of the disk medium are not wasted,
In addition to being able to utilize it more effectively, it is possible to reliably prevent erroneous data recording due to dirt, and at the time of reproduction, by using information of a new data recording prohibited sector, by performing erasure error correction processing, There is an effect that the error correction capability can be improved and the error correction processing can be speeded up.

According to a fourth aspect of the present invention, there is provided a disc recording / reproducing apparatus according to the second aspect, wherein the stain detecting section has stains in the disc medium during reproduction. When a sector is detected, a disc cleaning unit for cleaning the disc medium is provided. After cleaning by the disc cleaning unit, the stain detecting unit again detects stains. Since the above-mentioned reproduction control information is updated as a new data reproduction defective sector and the updated reproduction control information is used as a flag for error correction processing, the sector of the disk medium can be effectively utilized without waste, and reproduction for dirt can be performed. It is possible to improve the capacity and erase by using the information of the sector with bad data reproduction. By the Ri correction processing,
There is an effect that the error correction capability can be improved and the error correction processing can be speeded up. Further, according to the disk recording / reproducing apparatus of the fifth aspect of the present invention, in the disk recording / reproducing apparatus of the second aspect, the dirt detecting unit can detect the degree of dirt in addition to the presence or absence of dirt. Is configured,
When the dirt detection unit detects a sector having dirt, the sector is regarded as a data reproduction defective sector and is held in the reproduction control information holding means together with information indicating the dirt degree, and error correction processing is performed depending on the dirt degree. It is used as a flag for the error correction or it is determined that the error correction processing is impossible. Therefore, depending on the situation of the data reproduction defective sector, the error correction capability is improved, and when the error correction is impossible, unnecessary error correction processing is performed from the beginning. By omitting it, there is an effect that the efficiency of error correction processing can be improved.

According to the disc recording / reproducing apparatus of the sixth aspect of the present invention, in the disc recording / reproducing apparatus of the first or second aspect, an error correction processing unit block is constituted by the reproduction control information. When a number of defective data reproduction sectors that exceed the error correction capability is detected in multiple sectors, it is determined that the error cannot be corrected.If it is determined that the error cannot be corrected, the error can be eliminated by omitting unnecessary error correction from the beginning. This has the effect of enabling the efficiency of correction processing.

According to a seventh aspect of the present invention, there is provided the disk recording / reproducing apparatus according to the first or second aspect, wherein the recording control information constitutes an error correction processing unit block. When a number of data recording prohibited sectors exceeding the error correction capability are detected in a plurality of sectors, a means for changing the order of recording sectors is provided so that the error correction can be performed, and the changed recording sector order is the above-mentioned recording control. Since information is recorded and reproduced at the time of reproduction in accordance with the changed order of the sectors, the recording prohibited sector is recorded by distributing the recording prohibited sector in an error-correctable range. Also, error correction can be performed at the time of reproduction, and erasure error correction is also possible by using the recording-prohibited sector information as an inner flag. There is a result.

According to the disk recording / reproducing apparatus of the eighth aspect of the present invention, in the disk recording / reproducing apparatus of the first to seventh aspects, the disk body is housed in the cartridge and removable from the cartridge. In the case of a disc medium having a different structure, the disc body has means for detecting history information indicating whether or not the disc body has been taken out from the cartridge, and the history information is retrieved and taken out. When it detects that there is
Since the writing and reproducing speeds on the disk medium are reduced, there is an effect that data can be recorded and reproduced stably and surely even if the cartridge type disk medium becomes dirty.

According to the disc write / reproduction control method of the ninth aspect of the present invention, data recording / reproduction is performed on a disc medium capable of recording / reproducing data in sector units.
And a disc write / reproduction control method for reproducing, reproducing and reproducing the control information from the disc medium having control information of disc control information indicating a recorded sector of data and recording control information indicating a data recording prohibited sector. From the above control information, the recorded sector,
And sectors other than the data recording prohibited sector are recognized as recordable areas, the presence or absence of dirt in the recordable area is detected in sector units, and when a sector with dirt in the recordable area is detected, this sector is detected. Is added to the recording control information as a data recording prohibited sector, the recording control information is recorded as new recording control information on the disk medium, and the recording control information is used as an error correction flag during reproduction. By avoiding recording in the data recording prohibited sector at the time of data recording, it is possible to reliably prevent erroneous data recording due to dirt on the disk medium. , The position information of the error correction is used to perform the erasure error correction process to improve the error correction capability and improve the error correction process. Thereby enabling reduction, there is an effect that it is possible to effectively utilize the sector that has detected the contamination.

According to the disc write / reproduction control method of the tenth aspect of the present invention, in the disc write / reproduction control method of the ninth aspect, when the disc medium is reproduced, the sectors having dirt from the disc medium are reproduced. When this is detected, this sector is held as a data reproduction defective sector by the reproduction control information holding means outside the disk medium, and the held reproduction control information is used as an error correction flag. By performing erasure error correction processing by using as position information for error correction, it is possible to improve the error correction capability and effectively utilize the sector in which the dirt is detected.

According to a disc write / reproduction control method of an eleventh aspect of the present invention, in the disc write / reproduction control method of the ninth aspect, when a dirty sector in the recordable area is detected, The disk medium is cleaned, and after cleaning, the sectors other than the recorded sectors are again detected for dirt, and when a dirty sector is detected, this sector is set as a new data recording prohibited sector and the above recording control information is set. At the time of updating and reproducing, the updated recording control information is used as a flag for error correction processing, so that sectors of the disk medium can be utilized more effectively without waste, and erroneous data recording due to dirt can be ensured. It is possible to prevent the error, and at the time of reproduction, by using the information of the new data recording prohibited sector, the erasure error By a positive process, it has the effect of allowing improvement in error correction capability, and the speed of error correction processing.

According to the disk write / reproduction control method of the twelfth aspect of the present invention, in the disk write / reproduction control method of the tenth aspect, a dirty sector in the disk medium is detected during reproduction. When I did
The disk medium is cleaned, and after cleaning, the dirt on the disk medium is detected again, and when a sector with dirt is detected, the sector is set as a new data reproduction defective sector, and the reproduction control information is updated. Since the updated reproduction control information is used as a flag for error correction processing, the sectors of the disk medium can be effectively used without waste, and the reproduction ability against dirt can be improved. Used,
By performing the erasure error correction process, it is possible to improve the error correction capability and speed up the error correction process.

According to the disc writing / reproducing control method of the thirteenth aspect of the present invention, in the disc writing / reproducing control method of the tenth aspect, the degree of contamination is detected in addition to the presence / absence of contamination of the disc medium. Then, the dirty sector is held as the data reproduction defective sector together with the information indicating the degree of dirt in the reproduction control information holding means and used as a flag for error correction processing depending on the degree of dirt, or Since it is determined that the correction processing is impossible, the error correction performance is improved by improving the error correction capability according to the situation of the defective sector for data reproduction, or omitting the unnecessary error correction processing from the beginning when the error correction is impossible. It has the effect of enabling conversion.

According to the disk write / playback control method of the fourteenth aspect of the present invention, the ninth or tenth aspect is provided.
In the disk write / reproduction control method described in (3) above, when the number of defective data reproduction sectors exceeding the error correction capability is detected in the plurality of sectors forming the error correction processing unit block from the reproduction control information, it is determined that the error correction is impossible. Therefore, when it is determined that the error cannot be corrected, the unnecessary error correction is omitted from the beginning, so that the efficiency of the error correction process can be improved.

According to the disk writing / reproducing control method of the fifteenth aspect of the present invention, the ninth or tenth aspect is provided.
In the disc writing / reproducing control method described in (1), when the number of data recording prohibited sectors exceeding the error correction capability is detected from the plurality of sectors forming the error correction processing unit block, the error correction can be performed based on the recording control information. As described above, the order of sectors is changed and recorded in the recording control information, and at the time of reproduction, reproduction is performed in accordance with the changed order of sectors. Therefore, the record prohibited sectors are dispersed in the error-correctable range. By recording as described above, even if the recording is not successful, the error can be corrected at the time of reproduction, and by using the recording-prohibited sector information as the inner flag, the erasure error can be corrected.

The disc write / reproduction control method according to a sixteenth aspect of the present invention is the disc write / reproduction control method according to any one of the ninth to fifteenth aspects.
In the case of a disc medium having a structure in which the disc body is housed in the cartridge and is removable from the cartridge, the history information indicating whether or not the disc body has been taken out from the cartridge is searched and taken out. When it detects that there is something wrong, it slows down the writing and reproducing speed to the disk medium, so that even if dirt occurs on the cartridge type disk medium, data can be recorded and reproduced stably and surely. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a disc recording / reproducing apparatus of the present invention.

FIG. 2 is a diagram showing an example of a structure of a disk medium.

FIG. 3 is a conceptual diagram showing a configuration of a recording area of a disc medium according to the first embodiment.

FIG. 4 is a conceptual diagram showing recording control information in the second embodiment.

FIG. 5 is a diagram showing an example of an error correction array.

[Explanation of symbols]

1 disk media 1a Control information area 1b Data recording area 2 playback section 3 dirt detector 4 Recordable area search section 5 Recording control information management section 6 Information Management Department 7 Cleaning display 8 Non-recordable display 9 Recording section 10 Disk cleaning section 55 Playback control information management section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 20/18 550 G11B 20/18 550Z 572 572C 572F 576 576C H04N 5/85 H04N 5/85 Z F term ( Reference) 5C052 AA02 AB03 AB04 CC06 CC12 DD04 5D044 BC04 DE03 DE12 DE17 DE23 DE29 DE64 FG19 GK12 GK19 5D090 AA01 BB04 CC18 DD03 FF27 FF38 FF43 GG30 HH01 HH03 HH05 JJ16

Claims (16)

[Claims] 1. A disk recording / reproducing apparatus for recording / reproducing data to / from a disk medium capable of recording / reproducing data in sector units, and disk control information indicating a recorded sector of data and a data recording prohibited sector. Means for reproducing the control information from the disk medium having the recording control information indicating the recording control information, and a sector excluding the recorded sector and the data recording prohibited sector from the reproduced control information. A recordable area search unit for recognizing as a recordable area, and a stain detecting unit for detecting the presence or absence of stains in the recordable area in sector units. When a sector having stains in the recordable area is detected, It is added to the above-mentioned recording control information as a data recording prohibited sector, and this recording control information is added as new recording control information to the above-mentioned data recording control information. Recorded on disk media, during reproduction, using the above recording control information as a flag of the error correction, the disk recording and reproducing apparatus characterized by. 2. The disc recording / reproducing apparatus according to claim 1, wherein when a sector having dirt is detected from the disc medium during reproduction of the disc medium, the sector is regarded as a data reproduction defective sector and is outside the disc medium. A disc recording / reproducing apparatus comprising: a reproduction control information retaining unit that retains the reproduction control information, and uses the retained reproduction control information as a flag for error correction. 3. The disk recording / reproducing apparatus according to claim 1, further comprising a disk cleaning unit that cleans the disk medium when the dirty detection unit detects a dirty sector in the recordable area. After cleaning by the disk cleaning unit, the dirt detection unit detects dirt again on the sectors other than the recorded sectors, and when a dirty sector is detected, this sector is regarded as a new data recording prohibited sector and A disc recording / reproducing apparatus characterized by updating the recording control information and using the updated recording control information as a flag for error correction processing during reproduction. 4. The disc reproducing apparatus according to claim 2, further comprising a disc cleaning unit that cleans the disc medium when the stain detecting unit detects a dirty sector in the disc medium during reproduction. After cleaning by the disk cleaning unit, the dirt detection unit detects dirt again, and when a dirty sector is detected, the sector is set as a new data reproduction defective sector, and the reproduction control information is updated. A disc recording / reproducing apparatus characterized in that the updated reproduction control information is used as a flag for error correction processing. 5. The disk recording / reproducing apparatus according to claim 2, wherein the stain detecting section is configured to detect the degree of stain in addition to the presence / absence of stain, and the stain detecting section has stain. When a sector is detected, this sector is regarded as a data reproduction defective sector and is held by the above-mentioned reproduction control information holding means together with information indicating the degree of contamination, and is used as a flag for error correction processing depending on the degree of contamination, or A disc recording / reproducing apparatus characterized by determining that error correction processing is impossible. 6. The disk recording / reproducing apparatus according to claim 1, wherein, based on the reproduction control information, a number of data reproduction defective sectors exceeding a number of data reproduction defective sectors among a plurality of sectors forming an error correction processing unit block. A disc recording / reproducing apparatus characterized in that when it is detected, it is determined that an error cannot be corrected. 7. The disk recording / reproducing apparatus according to claim 1, wherein, based on the recording control information, a number of data recording prohibited sectors exceeding a number of data recording prohibited sectors among a plurality of sectors forming an error correction processing unit block are recorded. When it is detected, a means for changing the order of the sectors to be recorded is provided so that the error can be corrected, and the changed recording sector order is recorded in the recording control information, and at the time of reproduction, reproduction is performed in accordance with the changed order of the sectors. Do,
A disk recording / reproducing device characterized by the above. 8. The disc recording / reproducing apparatus according to claim 1, wherein in the case of a disc medium having a structure in which the disc body is housed in a cartridge and can be taken out from the cartridge, the disc body is separated from the cartridge. It has a means for detecting history information indicating whether or not it has been taken out, and when the history information is searched and it is detected that it has been taken out, writing and reproduction speeds to the disk medium A disc recording / reproducing device characterized by: 9. A disc write / playback control method for recording / reproducing data on / from a disc medium capable of recording / reproducing data in sector units, and disc control information indicating a recorded sector of data and data recording prohibition. As a recordable area, the control information is reproduced from the disk medium having the recording control information indicating the sector, and the recorded sector and the sector excluding the data recording prohibited sector are reproduced from the reproduced control information. Recognizing and detecting the presence or absence of dirt in the recordable area on a sector-by-sector basis, and when a sector having dirt in the recordable area is detected, this sector is added to the recording control information as a data recording prohibited sector, The recording control information is recorded on the disc medium as new recording control information, and the recording control information is reproduced at the time of reproduction. The use as a flag of the error correction, disk write reproduction control method characterized by. 10. The disc write / reproduction control method according to claim 9, wherein when a sector having dirt is detected from the disc medium during reproduction of the disc medium, this sector is regarded as a sector in which data reproduction is defective and is outside the disc medium. A disc recording / reproducing apparatus characterized in that the reproduction control information retaining means retains the retained reproduction control information and uses it as an error correction flag. 11. The disk writing / reproducing control method according to claim 9, wherein when a dirty sector in the recordable area is detected, the disk medium is cleaned, and after cleaning, a sector other than a recorded sector , The dirt is detected again, and when a dirty sector is detected, this sector is set as a new data recording prohibited sector and the above recording control information is updated. During reproduction, the updated recording control information is subjected to error correction processing. A disk write / playback control method characterized by being used as a flag for. 12. The disc writing / reproducing control method according to claim 10, wherein when a dirty sector in the disc medium is detected during reproduction, the disc medium is cleaned, and after cleaning, the disc medium is re-recorded. When dirt is detected and a dirty sector is detected, this sector is set as a new data reproduction defective sector, the above reproduction control information is updated, and the updated reproduction control information is used as a flag for error correction processing. A disk write / playback control method characterized by the above. 13. The disk write / reproduction control method according to claim 10, wherein the degree of dirt is detected in addition to the presence / absence of dirt on the disk medium, and the dirty area is indicated as a bad data reproduction sector. A disc writing / reproducing control method, characterized in that it is held together with information in the reproduction control information holding means, and is used as a flag for error correction processing or it is determined that error correction processing is impossible depending on the degree of contamination. 14. The disk write / reproduction control method according to claim 9 or 10, wherein, in the plurality of sectors forming an error correction processing unit block, the number of data reproduction defective sectors exceeds the error correction capability based on the reproduction control information. A disc writing / reproducing control method, characterized in that it is determined that the error cannot be corrected when is detected. 15. The disc write / reproduction control method according to claim 9, wherein the number of data recording prohibited sectors exceeds the error correction capability among a plurality of sectors forming an error correction processing unit block, based on the recording control information. When writing is detected, the order of the sectors is changed so that the error can be corrected, the sectors are recorded in the recording control information, and at the time of reproduction, the reproduction is performed according to the changed order of the sectors. Control method. 16. The disc writing / reproducing control method according to claim 9, wherein in the case of a disc medium having a structure in which the disc body is housed in a cartridge and is removable from the cartridge, the disc body is , Searching history information indicating whether or not it has been taken out from the cartridge, and when detecting that it has been taken out, the writing and reproducing speed to the disk medium is slowed down. Disc write / play control method.