JPH1186454A - Recording/reproducing method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform defect management by successively detecting defect positions on a medium in a continuous reproducing mode, successively storing positional information related to the defect positions in a memory and recording the positional information recorded in the memory on a table area on the medium in response to the end of the continuous reproducing mode or a reproducing end of a prescribed range on the medium. SOLUTION: A video signal is encoded from an input circuit 10 to be added to a magnetic head drive circuit 12, and a controller 30 decides whether or not an address of an objective sector is registered by reading out the data stored in a defect list of a storage part 28. When the objective sector is registered, the controller 30 decides flag information, and decides the right/wrong of movement to slip processing. In a zone, fixed numbers are counted, and when the processing of prescribed numbers of sectors are ended, the flag information is changed. Since the defect position data are not stored, write-in for a magneto-optical disk 5 is not performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for recording information on a recording medium and reproducing the information from the recording medium, and a method for recording and reproducing information on the recording medium. The present invention also relates to an apparatus and a method for performing defect management on a recording medium.

[0002]

2. Description of the Related Art Conventionally, when providing a recording medium such as a magneto-optical disk, it is necessary to correct defect information to ensure data reliability. Therefore, so-called defect management is performed. The defect management is to replace a defective sector with another normal sector.

[0003] As a method of the defect management, the following methods can be roughly classified. One is
This is called slipping replacement, and when a defect is detected in a sector as a unit for recording and playback,
The physical address for recording / reproducing is slipped, that is, the next logical address is given to the sector where the next defect is not detected.

[0006] That is, as shown in FIGS. 6 and 7, one zone of certain data is provided with a user area and a spare area, and the first sector as a physical address (the first sector is assumed to be 0th). If the fourth and fourth sectors are defective, a logical address is given to the next sector. That is, the first logical address is given to the second sector, and the third logical address is given to the fifth sector. Then, the (n-1) th logical address is given to the first sector of the spare area, and the nth logical address is given to the next sector.

The other one is called linear replacement, and when a defect is detected in a sector, a sector to which a logical address is assigned is not shifted as in the above-described slipping replacement, and the defective sector is replaced. The logical address of the sector is given to the spare area. In other words, as shown in FIG. 8, when the first sector (assumed to be 0th at the beginning) and the fourth sector as physical addresses have defects, the replacement of these defective sectors is performed. Logical addresses are placed in the spare area.

[0006]

However, AV (audio-
There has been a demand for defect management for digital AV data that requires real-time properties, such as data recorded on a recording medium used in a device. In addition, in a recording medium capable of recording and reproduction, when recording or reproduction is performed on the recording medium, a defect may occur in a sector, which is some factor. In such a case, it is desirable to be able to guarantee the accuracy of the data. In particular, it is conceivable that the recording / reproducing quality of the recording medium is not guaranteed at the time of shipment due to reasons such as cost, and in such a case, it is necessary for the user to perform defect management. Therefore, the present invention provides a recording / reproducing apparatus and a recording / reproducing method which can perform defect management on data requiring real-time performance and can cope with occurrence of a defect due to use progress. It is intended for.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. First, information is recorded and reproduced by dynamically scanning a rewritable medium. In the recording / reproducing method, defect positions on a medium are sequentially detected in a continuous reproduction mode, and positional information on the detected defect positions is sequentially stored in a memory, and the end of the continuous reproduction mode or a predetermined range in the medium is determined. The position information stored in the memory is recorded in a table area on a medium in response to the end of reproduction of the data. Therefore, the defect position is detected during reproduction, the position information of the defect position is stored in the memory, and when the reproduction is completed, the position information about the defect position is recorded on the medium. Thus, defect management can be performed.

[0008] Secondly, in a recording and reproducing method for recording and reproducing information by dynamically scanning a rewritable medium, a defect position detecting step for detecting a defect position on the medium in a continuous reproducing mode. A defect position storing step of sequentially storing position information about a defect position detected by the defect position detecting step in a memory; and storing the position information stored in the memory in a continuous reproduction mode or in a predetermined range in the medium. Recording a table in the table area on the medium in response to the end of reproduction. Also in the recording / reproducing method of the second configuration, in the defect position detecting step, the defect position is detected while performing the reproduction, and in the defect position storing step, the position information of the defect position is stored in the memory. In the table recording step, when the reproduction is completed, the position information on the defect position is recorded on the medium, so that the defect management can be performed using this position information at the time of recording.

Thirdly, in a recording / reproducing method for recording / reproducing information by dynamically and continuously scanning a medium carrying a series of information divided in sector units, a defective sector is detected in a continuous reproducing mode. A defective sector detecting step of detecting, a defective position storing step of sequentially storing the position information of the defective sector detected by the defective sector detecting step in a memory, and ending the continuous reproduction mode by reading the position information stored in the memory. Recording a table area on the medium in response to the end of reproduction of a predetermined range on the medium. Also in the recording / reproducing method of the third configuration, in the defective sector detecting step, a defective sector is detected while reproducing, and in the defective position storing step, the position information of the defective sector is stored in a memory. In the table recording step, when the reproduction is completed, the position information on the defective sector is recorded on the medium, so that the defect management can be performed using the position information of the position sector at the time of recording.

Fourth, in any of the first to third configurations, when the position information is stored in the memory, predetermined flag information is added to the position information and stored. At the time of recording in the table area on the medium, the position information is recorded together with the flag information.
Therefore, it is possible to determine whether or not the recognition of the position information as a defect position is completed at the time of recording based on the flag information.

Fifth, in any one of the first to fourth configurations, the recording / reproducing method further comprises the step of reading the position information stored in the table area on the medium and storing it in the memory. And a defect position skipping step of skipping the defect position when the recording position on the medium reaches the defect position in the continuous recording mode. Therefore, defect management can be performed by skipping a defect position during recording. In particular, since defect management is performed using reproduction and recording, there is no need to perform separate formatting or the like. Sixth,
The fifth configuration is characterized in that, in the continuous recording mode, information of a predetermined data amount is recorded in a divided area obtained by dividing a recording / reproducing area of the medium for each predetermined data amount. Accordingly, defect management can be performed by securing recording data of a predetermined data amount in a certain partitioned area and performing slipping replacement. Seventh, in the fifth or sixth configuration, the recording and reproducing method further comprises:
In the continuous recording mode, a flag information storing step of storing flag information indicating the skipped defect position in a memory is provided. Therefore, it is possible to determine whether or not recognition of the position information as a defect position has been completed at the next recording based on the flag information.

Eighthly, in the fifth or sixth configuration, in the memory storing step, the flag information is read together with the position information and stored in the memory. Therefore, information for skipping at the time of the next reproduction or the like is given based on this position information, and whether or not recognition of the position information as a defect position has been completed at the next recording is determined based on the flag information. be able to. Ninth, in the ninth aspect, the recording / reproducing method may further comprise the step of changing flag information corresponding to the skipped defect position in a continuous recording mode and storing the flag information in a memory. It is characterized by having. Therefore, by changing the flag information, it is possible to determine whether or not the position information has been completely recognized as a defective position at the next recording.

In a tenth aspect, in the seventh or ninth configuration, the position information stored in the memory is flagged in response to the end of the continuous recording mode or the end of recording in a predetermined range on the medium. It is recorded in a table area on a medium together with information. As a result, information for skip processing at the time of the next reproduction or the like can be given. Eleventh, in the seventh or ninth configuration, when the continuous reproduction mode is executed in a state where the flag information is stored in the memory, the defect position or the flag information having the flag information is changed. The reproduction is skipped for the information on the defective position, and the reproduction is executed for the information on the defect position having no flag information or the defect position in which the flag information is not changed.
That is, since the recognition of the defect position having the flag information or the flag information changed as the defect position has been completed, the reproduction is skipped, while the flag information does not have the flag information or the flag information is not changed. Since the defect position has not been recognized as a defect position,
The reproduction is executed as it is. Twelfth,
In the seventh or ninth configuration, the recording / reproducing method further includes a reproducing step of reproducing information recorded on a medium having the flag information in the table area, and the reproducing step stores the flag information in the table area. Reading the stored position information and storing the read position information in a memory, and in a continuous reproduction mode, skips reproduction of information on a defect position having the flag information or a defect position in which the flag information has been changed, and does not have the flag information. Or a step of executing reproduction of the information on the defect position in which the flag information has not been changed. Also in this case, since the recognition of the defect position having the flag information or the flag information has been completed as the defect position, the reproduction is skipped, while the flag information having no flag information or the flag information is changed. Since the recognition of the defective position which has not been completed has not been completed, the reproduction is executed as it is.

In the thirteenth aspect, the eleventh or twelfth
In the configuration of the above, when reproducing information of a defect position having no flag information or a defect position in which the flag information is not changed, if no defect is detected at the defect position, the defect position is read from the memory. Is characterized by deleting the position information. That is, even if the defect position is initially recorded, if no defect is detected, there is no need to record the defect position, so the position information is erased. Thereby, the area in the medium can be effectively used. Fourteenth, in any one of the eleventh to thirteenth configurations, the recording / reproducing method may further include the step of: detecting a new defect position not in the memory in the continuous reproduction mode. And an additional step of adding position information about the new defect position to the memory.
Thereby, defect management can be performed even for a new defect due to the use progress.

Fifteenth, the thirteenth or fourteenth
The updated information in the memory is updated and recorded in a table area on the medium in response to the end of the continuous reproduction mode or the end of reproduction of a predetermined range on the medium. Thereby, information for skip processing at the time of next recording or the like can be given. Also,
Sixteenth, in any of the first to fifteenth configurations, the information to be recorded or reproduced is video information and / or
Or, it is voice information.

Seventeenth, in a recording / reproducing apparatus for dynamically recording and reproducing information by dynamically scanning a rewritable medium, a defect position detecting means for detecting a defect position on the medium in a continuous reproduction mode. Memory means for sequentially storing position information on the defect positions detected by the defect position detecting means, and terminating the continuous reproduction mode or terminating reproduction of a predetermined range on the medium by storing the defect position information stored in the memory means. And a table recording means for recording in a table area on the medium in response to the Therefore, the defect position is detected while being reproduced by the defect position detecting means, the positional information of the defective position is stored by the memory means, and when the reproduction is completed, the positional information on the defective position is recorded on the medium by the table recording means. Therefore, defect management can be performed using this position information at the time of recording.

Eighteenth, in a recording / reproducing apparatus for recording / reproducing information by dynamically continuously scanning a medium carrying a series of information divided in sector units, a defective sector is recorded in a continuous reproducing mode. Defective sector detecting means for detecting, memory means for sequentially storing position information of defective sectors detected by the defective sector detecting means, and defect position information stored in the memory means for ending the continuous reproduction mode or in the medium. Table recording means for recording in a table area on the medium in response to the end of reproduction in a predetermined range. Also in this eighteenth configuration, the defective sector is detected by the defective sector detecting means while performing the reproduction, and the memory means stores the position information of the defective sector. Since the position information about the defective sector is recorded on the medium by the means, the defect management can be performed by using the position information of the position sector at the time of recording.

In the nineteenth aspect, the seventeenth or eighteenth
Wherein the memory means adds predetermined flag information to the position information when storing the position information in the memory, and the table storage means records the position information together with the flag information. It is characterized by doing.
Therefore, it is possible to determine whether or not the recognition of the position information as a defect position is completed at the time of recording based on the flag information.

Twentiethly, the seventeenth through nineteenth aspects are described.
In any one of the configurations described above,
Further, a table reading means for reading defect position information stored in the table area, a memory means for storing the read defect position information, and in a continuous recording mode, when the recording position on the medium reaches the defect position, Defect position skip means for skipping a defect position. Therefore, defect management can be performed by skipping a defect position during recording. In particular, since defect management is performed using reproduction and recording, there is no need to perform separate formatting or the like. Twenty-first, in the twentieth configuration, in the continuous recording mode, in the continuous recording mode, the information of the predetermined data amount is defined within a divided area obtained by dividing the recording / reproduction area of the medium for each predetermined data amount. The recording is performed. Accordingly, defect management can be performed by securing recording data of a predetermined data amount in a certain partitioned area and performing slipping replacement. Also, in the 22nd,
In the twentieth or twenty-first configuration, the recording / reproducing apparatus further includes a memory unit that stores flag information indicating the skipped defect position in the continuous recording mode. Therefore, it is possible to determine whether or not recognition of the position information as a defect position has been completed at the next recording based on the flag information.

In the twenty-third, the twentieth or the twenty-first
Wherein the recording / reproducing apparatus further comprises a memory for reading and storing the flag information together with the position information. Therefore, information for skipping at the time of the next reproduction or the like is given based on this position information, and whether or not recognition of the position information as a defect position has been completed at the next recording is determined based on the flag information. be able to. Also, 24th,
In the twenty-third configuration, the recording / reproducing apparatus further includes a flag information changing unit that changes the flag information corresponding to the defect position skipped by the defect position skip unit and stores the flag information in a memory. . Therefore, by changing the flag information, it is possible to determine whether or not the position information has been completely recognized as a defective position at the next recording.

Twenty-fifth, the twenty-second or twenty-fourth
In the configuration, the recording / reproducing apparatus may further include, in response to the end of the continuous recording mode or the end of recording in a predetermined range on the medium, the position information stored in the memory means together with the flag information in the table area on the medium. Characterized in that it has a table recording means for recording the data in the table. As a result, information for skip processing at the time of the next reproduction or the like can be given. In the twenty-sixth, the twenty-second or the second
In the configuration of No. 4, when the continuous reproduction mode is executed in a state where the flag information is stored in the memory means, reproduction is skipped for the defect position having the flag information or the defect position in which the flag information is changed. On the other hand, it is characterized in that reproduction is executed for information on a defect position that does not have the flag information or whose flag information has not been changed. Twenty-seventh, in the twenty-second or twenty-fourth configuration, the recording / reproducing apparatus further stores table reading means for reading the position information stored in the table area, and stores the read position information. In the continuous reproduction mode, reproduction is skipped for the defect position having the flag information or the defect position where the flag information has been changed, and the flag information does not have the flag information or the flag information has been changed. It is characterized in that the information of the defective position is reproduced. In the twenty-sixth and twenty-seventh configurations, since the recognition of the defect position having the flag information or the flag information changed as the defect position has been completed, the reproduction is skipped, while the flag information has the flag information. Since the recognition of the defect position for which the flag information has not been changed or for which the flag information has not been changed has not been completed, the reproduction is executed as it is.

In the twenty-eighth, the twenty-sixth or the twenty-seventh
In the configuration, when the recording / reproducing apparatus reproduces information on a defect position having no flag information or a defect position in which the flag information has been changed, if no defect is detected at the defect position, the memory means It is characterized in that position information on the upper defect position is deleted. That is, even if the defect position is initially recorded, if no defect is detected, there is no need to record the defect position, so the position information is erased. Thereby, the area in the medium can be effectively used.

In the twenty-ninth aspect, the twenty-sixth or the twenty-seventh
Wherein the recording / reproducing apparatus adds position information on the new defect position to the memory means when a new defect position not present on the memory means is detected in the continuous reproduction mode. And Thereby, defect management can be performed even for a new defect due to the use progress. In a thirtieth aspect, in the twenty-eighth or twenty-ninth configuration, the recording / reproducing device is configured to update information of the memory unit updated in response to the end of the continuous reproduction mode or the end of reproduction of a predetermined range on the medium. Is updated and recorded in the table area on the medium. Thereby, information for skip processing at the time of next recording or the like can be given. In a thirty-first aspect, in any one of the seventeenth to the thirtieth configurations, the information to be recorded or reproduced is video information and / or audio information.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. A recording / reproducing apparatus A according to the present invention is configured as shown in FIG.
0, a magnetic head drive circuit 12, a magnetic head 14,
Optical head 16, reproduced signal amplifying circuit 18, low-pass circuit 20, decoder 22, ECC / EDC processing circuit 2
4, storage unit 28, storage unit 29, controller 30
, A servo circuit 32, a spindle motor 34, and a clock generation circuit 36.

Here, the input circuit 10 receives the video / audio signal and encodes the video / audio signal into digital data. The input circuit 10 also controls the bit rate at the time of variable length coding. The magnetic head driving circuit 12 drives the magnetic head according to a signal input from the input circuit 10. The magnetic head 14 is used when recording data, and magnetizes the recording film of the magneto-optical disk 5. The optical head 16 is used for reproducing data, and receives the reflected light of the laser light applied to the magneto-optical disk 5.

The reproduction signal amplifying circuit 18 amplifies a signal from the optical head 16. Further, the low-pass circuit 20 integrates the signal amplified by the reproduction signal amplifying circuit 18. The decoder 22 is provided with the clock generation circuit 36.
And decodes the signal modulated at the time of recording in synchronization with the clock sent from. The ECC / EDC processing circuit 24
Error correction is performed on the signal decoded by the decoder 22. That is, ECC (Error Correcting Code) processing and EDC (Error Detecting Code) processing are performed.

The storage unit 28 stores information, and in particular, is provided with a defect list as shown in FIG. As shown in FIG. 2, the defect list stores defect position data, that is, address information on a physical address (31 bits) of a defective sector together with flag information (1 bit). At least the storage unit 28 functions as a memory unit. The storage unit 29 also stores information in the same manner, but this storage unit 29 stores reproduced video and audio information. These storage units 28 and 29 are actually constituted by memories.

The controller 30 controls the operation of each unit of the recording / reproducing apparatus A. In particular, control is performed so as to perform operations as shown in the flowcharts of FIGS. 3, 4, and 5. Further, the controller 30 has a function of detecting a defective sector as the defect position. The defective sector is a sector in which recording and reproduction cannot be performed normally. That is, it is determined whether the correction has been made by the ECC / EDC processing. Further, at the end of recording on the magneto-optical disk 5, the PDL in the DMA (Defect Management Area) of the magneto-optical disk 5 according to the defect position data stored in the defect list stored in the storage unit 28.
(Primary Defect List) is rewritten. The controller 30 functions as the defect position detecting means and the defective sector detecting means.

The servo circuit 32 rotates the spindle motor 34 at a predetermined number of revolutions according to a signal and a clock sent from the reproduction signal amplifying circuit 18.
The objective lens in the optical head 16 is controlled to perform tracking servo and focus servo.

The operation of the recording / reproducing apparatus A having the above configuration, that is, a recording / reproducing method by the recording / reproducing apparatus A will be described. First, the magneto-optical disk 5 is set in the recording / reproducing apparatus A.
Is set and predetermined data is recorded. The magneto-optical disk 5 is provided with two DMAs on the inner circumference side and the outer circumference side, respectively. This DMA includes DDS (Di
sc Definition Structure and PDL (Primary Defect)
List) and SDL (Secondary Defect List). Here, the DDS stores various types of information on the entire disc. In addition, the PDL includes
Data relating to the slipping replacement is stored. In particular, the address of the defective sector is stored together with the flag information. The SDL stores data on linear replacement.

When the magneto-optical disk 5 is set in the recording / reproducing apparatus A or immediately before recording, data in the DMA stored in the magneto-optical disk 5 is read out, and the information is stored in the storage unit. 28. In this case, it is assumed that the magneto-optical disk 5 is a virgin disk and no data is stored at least in the PDL. Therefore, the address of the defective sector is not stored in the defect list of the storage unit 28.

When recording on the magneto-optical disk 5, the flowchart shown in FIG. 3 is applied, and the description will be made according to the flowchart shown in FIG. Video and audio information to be recorded is received by the input circuit 10, encoded, and sent to the magnetic head drive circuit 12. Then, writing is performed in order from a predetermined sector. To this end, first, the data is sent to the recording start zone (S10). Then, it is determined whether the address of the target sector is registered in PDL or SDL (S11). For this determination, the controller 30 reads out the data stored in the defect list of the storage unit 28 and makes the determination.

If the target sector has been registered, the flow shifts to step S12 to determine whether the flag information is 1 or 0. If it is 1, step S1
At 3, the flag information is set to 0. That is, the storage unit 2
The flag information at the address of the sector in the defect list No. 8 is set to 0. Thereafter, a slip process is performed (S14). That is, recording is not performed on the target sector.
After step S14, the process moves to step S17. On the other hand, when the flag information is 0, a slip process is performed (S15), and thereafter, the process proceeds to step S17. Steps S14 and S15 correspond to the defect position skip step.

On the other hand, if the target sector is not registered in step S11, normal recording is performed (S11).
16). That is, the video and audio information is recorded in the target sector. After the recording has been performed, the process proceeds to step S17.

Then, in step S17, it is determined whether or not processing of a predetermined number of sectors has been completed. That is, in each zone of the magneto-optical disk 5, it must be guaranteed that recording is performed in a fixed number of sectors, and the fixed number is counted. That is, information of a predetermined data amount is recorded in the zone. This zone corresponds to the above defined area. Thus, the slipping replacement for that zone is completed. If the processing of the predetermined number of sectors has not been completed, the transfer of sectors is waited for (S1).
8). Then, when the processing of the predetermined number of sectors is completed, the PDL of the magneto-optical disk is rewritten for the one whose flag information has become 0 (S19). That is, in the defect list, for the address information for which the flag information is 0, the flag information of the address information is also set to 0 for the PDL on the magneto-optical disk. That is, the flag information in the PDL in the DMA of the magneto-optical disk 5 is changed by the controller 30, the magnetic head drive circuit 12, and the magnetic head 14. Actually, the address information and the flag information are overwritten with respect to the address information. Naturally, the contents of the address information are the same before and after overwriting. That is, the rewriting of the flag information of the magneto-optical disk is performed every time the processing of a certain zone is completed. The magnetic head 14 and the like function as table recording means.

Then, it is determined whether or not the recording of all the designated data has been completed (S20). If the recording has been completed, the entire processing is terminated. (S21) after sending to step S1
Return to 1. As described above, when the target sector exists in the defect list, the writing is skipped, and when the target sector does not exist, the recording is performed.

In this case, that is, when recording is performed on the magneto-optical disk first, the address relating to the defective sector is not stored in the defect list.
Recording is performed in the order of physical addresses. That is,
Actually, even if there is a defective sector, recording is performed in the order of the physical address. However, for the spare area, writing is skipped. Also, in this case,
Since no defect position data is stored in the defect list of the storage unit 28, writing to the magneto-optical disk 5 is not performed.

It has been described that the writing to the magneto-optical disk is performed when the processing of a certain zone is completed (S19). However, the present invention is not limited to this, and as shown in the flowchart of FIG. It may be performed after the recording process is completed. That is, in the flowchart shown in FIG. 4, after the recording of all the specified data is completed, the PDL of the magneto-optical disk is rewritten for the one whose flag information has become 0 (S41).

The flowchart of FIG. 4 has the same contents except for the timing of writing to the magneto-optical disk. That is, steps S30 to S38 correspond to steps S10 to S18 in the flowchart of FIG.
Step S39 corresponds to step S20. Further, step S40 corresponds to step S21.

Next, the operation at the time of reproducing the magneto-optical disk 5 recorded as described above will be described. It is assumed that the magneto-optical disk 5 on which the video and audio information is recorded as described above is set in the recording and reproducing apparatus A.

Then, in this case as well, the data in the DMA stored in the magneto-optical disk 5 is read out, and the information is stored in the storage unit 28, as described above. That is, the optical head 16 and the like function as table reading means. In the case of the magneto-optical disk 5 on which recording is performed for the first time, it is assumed that no data is stored in the PDL of the magneto-optical disk 5. Therefore, the storage unit 2
The defect list No. 8 does not store the address of the defective sector.

At the time of reproduction from the magneto-optical disk 5, the flowchart shown in FIG. 5 is applied, and the description will be made according to the flowchart shown in FIG. First, when reproducing the recorded video / audio information, reading is performed in a predetermined order for each sector in each zone. First, a reading position is sent to a reproduction start zone (S50). Then, ECC / EDC processing is performed on the video and audio information recorded in a certain target sector, and it is determined whether or not the correction has been made (S51). At the time of the ECC and EDC, the reproduction signal amplifying circuit 18, the low-pass circuit 20, the decoder 2
2 is performed. This step S51 corresponds to a defect position detecting step and a defective sector detecting step.

If the correction is successful, it is determined whether the address of the target sector is registered in the PDL (S52). This determination is made by the controller 30 in accordance with the information stored in the defect list of the storage unit 28. If it is registered, it is determined whether the flag information is 1 or 0 (S53). This determination is also made by the controller 30 in accordance with the information stored in the defect list. Here, the case where the flag information is 1 means that when a defective sector is found during reproduction, the address of that sector is stored in the defect list with the flag information set to 1 (S62). . Further, the case where the flag information is 0 means that there is a process of setting the flag information to 0 in step S13 or step S33 as shown in the flowcharts of FIGS. And the flag information is 0
Is the case.

If the flag information is 1, the address information and the flag information for the sector are deleted from the defect list (S54). That is, the target sector was once written in the defect list as a defective sector, but since the subsequent error correction processing has detected that the target sector is not defective, the target sector is deleted from the defect list. .
Then, reproduction is performed for the target sector (S55).
At the time of reproduction, the reproduced video and audio information is E
When the ECC / EDC processing is performed by the CC / EDC processing circuit 24, the data is temporarily stored in the storage unit 29 and then output. The process moves from step S55 to step S64.

On the other hand, if the flag information is 0 in step S53, the reading is skipped (S56). In other words, when the flag information is 0 for a certain target sector, the recognition of the sector as a defective sector has been completed, and the reading is skipped. Actually, a series of reproduction processing from the reproduction signal amplifier circuit 18 is omitted for the target sector. The process moves from step S56 to step S64.

If the address of the target sector is not registered in step S52, the sector is not a defective sector, and the reproduction is performed as it is (S57). The method of the reproduction processing is the same as in the case of S55. The process moves from step S57 to step S64.

On the other hand, in step S51, the ECC
If the correction could not be made by EDC processing,
It is determined whether the address of the target sector is registered in the PDL or SDL (S58). That is, the controller 30 makes the determination in accordance with the information stored in the defect list of the storage unit 28. If it is registered, it is determined whether the flag information is 1 or 0 (S59).
This determination is also made by the controller 30 in accordance with the information stored in the defect list. If the flag information is 1, normal reproduction is performed (S60). In other words, although this sector is a defective sector, reproduction is performed at this point because slipping replacement has not been completed yet. As for the sector in which the flag information is not changed, the reproduction is performed as it is. On the other hand, when the flag information is 0, the reading is skipped (S61). In other words, when the flag information is 0 for a certain target sector, the recognition of the sector as a defective sector has been completed, and the reading is skipped. The process moves from step S60 and S61 to step S64.

If the address of the target sector has not been registered in step S58, the address information on the target address is registered in the defect list of the storage unit 29. At this time, the flag information is set to 1 (S62). The address of the target sector corresponds to the position information on the defect position. Then, the reproducing process is performed on the target sector. The method of the reproduction processing is S55, S
Same as 57. This step S62 corresponds to a defect position storage step, a defect position storage step, and an addition step. The process moves from step S63 to step S64.

Next, in step S64, it is determined whether or not the reproduction of the sector in the zone has been completed. When the reproduction is completed, the process proceeds to step S66. On the other hand, if the reproduction has not been completed yet, the read position is shifted to the next sector (S65), and the process returns to step S51.

Then, in step S66, it is determined whether or not reproduction of all designated sectors has been completed. If reproduction has been completed, defect position data is stored in the magneto-optical disk (S67). The defect position data stored in the defect list of the storage unit 28 is written to the PDL of the magneto-optical disk 5. Specifically, address information is written together with flag information. That is, when the reproduction stop button is operated, the PDL is overwritten. The process of writing to the PDL corresponds to the table recording step, and the PDL corresponds to the table area. That is, writing is performed in response to the end of the continuous reproduction mode. If the reproduction is not completed, the read position is shifted to the next zone (S
67).

In the above case, since the defect position data has not been stored in the defect list yet, depending on whether or not the defect position has been corrected in step S51, the process proceeds to step S52 or later, or step S58.
It is determined whether to proceed to the subsequent steps. For example, as shown in FIG. 7, when a defect is detected in the first sector and the fourth sector (first is assumed to be 0th) in a certain zone, the defect list includes the first sector. And the address information of the fourth sector is stored with the flag information set to 1 (S62). When the magneto-optical disk 5 that has been reproduced immediately before is further reproduced, the reproduction is performed according to the flowchart of FIG.

In the above description, the writing of the defect position data to the magneto-optical disk is performed after the reproduction of all the sectors is completed (S68). However, it is performed when the reproduction for each zone is completed. You may. That is, the process of step S68 may be performed between steps S64 and S66. That is, writing is performed in response to the end of reproduction in a predetermined range on a magneto-optical disk as a medium.

Next, a case where recording is performed again on the magneto-optical disk 5 on which the reproduction processing has been performed as described above will be described. Also in this case, when the magneto-optical disk 5 is set in the recording / reproducing apparatus A or immediately before recording,
Data in the DMA stored in the magneto-optical disk 5 is read, and the information is stored in the storage unit 28. That is, the address of the defective sector and the flag information are read and stored. This processing corresponds to the memory storage step. Since the video and audio information is recorded, the flowchart shown in FIG. 3 or 4 is applied.

For example, at the time of the immediately preceding reproduction, as shown in FIG. 7, when a defect is detected in the first sector and the fourth sector (firstly, the zeroth sector) in a certain zone, a defect is detected. The list stores the address information of the first sector and the fourth sector. Note that the flag information of the address is 1 (see FIG. 5).
See S62).

First, when the 0th sector is set as the target sector, since the 0th sector does not exist in the defect list, recording is performed on the 0th sector (S16). Next, in the case of the first sector, since the sector exists in the defect list, step S
The process proceeds from step 11 to step S12, and since the flag information is 1, the flag information is set to 0 (S13). That is, the flag information is changed and stored in the storage unit 28. This process corresponds to the flag information storing step. Then, a slip process is performed on the sector of the first address (S14). That is, recording of video and audio information is not performed. Since such control is performed by the controller 30, the controller 30 functions as the defect position skip unit and the flag information changing unit.
Here, the reason why the flag information is set to 0 is to recognize that the first sector is a defect position in order to perform slipping replacement.

Next, for the second and third sectors, the same processing as for the zeroth sector is performed. In the second sector, video and audio information to be recorded next to the data recorded in the zeroth sector is naturally recorded. Next, for the fourth sector, similarly to the first sector, a process for setting the flag information to 0 is performed, and recording is not performed for the fourth sector. Next, the fifth and subsequent sectors are recorded in the same manner as the zeroth sector. Then, the same processing is performed until the processing of n sectors is completed (S17, S18). That is,
In the example of FIG. 7, since the recording is not performed in the first and fourth sectors, the n-th video / audio information in the zone shown in FIG. 7 is recorded in the (n + 2) -th sector as the physical address. . Thereby, in the zone shown in FIG. 6, the existence of n data is guaranteed, and the slipping replacement is performed.

When the processing of a certain zone is completed, the flag information of the magneto-optical disk is rewritten (S19), and the above-mentioned S1 is repeated until the recording of all the designated video / audio information is completed.
The processing from 1 to S19 is repeated. When the magneto-optical disk 5 on which recording has been performed as described above is reproduced again, the processing is performed according to the flowchart of FIG.

In the sector existing in the defect list with the flag information set to 1, when re-recording,
The flag information is 0 for the sector that has become the target sector.
Therefore, at the time of this reproduction, the skip is performed (see FIG. 5, S56, S61).
On the other hand, for the sectors that are present in the defect list with the flag information set to 1 at the time of recording and are not the target sectors (that is, the sectors are not recorded at the time of recording), the flag information still remains at 1 Therefore, the reproduction is performed also in the current reproduction (see FIG. 5, S55, S60).

As described above, according to the recording / reproducing apparatus A of this embodiment, defect management is performed on digital AV data that requires real-time processing, such as data recorded on a recording medium used for AV equipment. be able to. In particular, in a recording medium capable of recording and reproduction, when recording or reproduction is performed on the recording medium, if a defect occurs in a sector, which is some factor, data accuracy can be guaranteed. Further, even when the recording / reproducing quality of the recording medium is not guaranteed at the time of shipment due to cost or the like, the defect management can be performed on the user side.

In the above configuration, the storage unit that reads and holds defect position data in the PDL stored on the magneto-optical disk, and the storage unit that registers defect position data when a sector defect is detected during reproduction. Although the recording unit and the recording unit are constituted by the same storage unit 28, they are constituted by separate storage units, and the defect position data stored in both storage units are added at the end of recording or reproduction to be written on the magneto-optical disk. You may.

In the above description, S6 in FIG.
2, the flag information is set to 1 and the flag information is set to 0 in S13 of FIG. 3 and S33 of FIG. 4. However, the present invention is not limited to this. In S62 of FIG. The flag information may be stored in the storage unit 28 after that in step S13 in FIG. 3 or step S33 in FIG. That is,
The presence of the flag information corresponds to the case where the flag information is 0, and the absence of the flag information corresponds to the case where the flag information is 1
Corresponds to the case of In this case, the process of storing the flag information corresponds to a flag information storing step.

In the above description, the defect management is performed by slipping replacement. However, the present invention is not limited to this, and the processing may be performed by linear replacement. In this case, since image data or audio data to be originally recorded at a certain defective sector position is recorded in a sector in the spare area, a buffer for storing the image data or audio data is separately required.

In the above description, the recording medium and the medium are magneto-optical disks as an example. However, the present invention is not limited to this, and may be any medium that can repeatedly perform recording and reproduction. In the above description, the information to be recorded / reproduced has been described as video / audio information. However, the information is not limited to this, and may be, for example, video information or audio information.

[0064]

According to the recording / reproducing method and the recording / reproducing apparatus according to the present invention, defect management can be performed on data requiring real-time performance, and the occurrence of defects due to the use progress can be dealt with. be able to. Especially,
Even when the recording / reproducing quality of the recording medium is not guaranteed at the time of shipment, defect management can be performed on the user side.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an outline of a defect list.

FIG. 3 is a flowchart showing an operation at the time of recording.

FIG. 4 is a flowchart showing another example of the operation at the time of recording.

FIG. 5 is a flowchart showing an operation at the time of reproduction.

FIG. 6 is an explanatory diagram showing a configuration of a recording / reproducing area in a magneto-optical disk.

FIG. 7 is an explanatory diagram illustrating slipping replacement.

FIG. 8 is an explanatory diagram illustrating a linear replacement.

DESCRIPTION OF SYMBOLS A Recording / reproducing apparatus 10 Input circuit 12 Magnetic head drive circuit 14 Magnetic head 16 Optical head 18 Reproduction signal amplifying circuit 20 Low pass circuit 22 Decoder 24 ECC / EDC processing circuit 28, 29 Storage unit 30 Controller 32 Servo circuit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI G11B 20/18 572 G11B 20/18 572C 572F

Claims (31)

[Claims] 1. A recording / reproducing method for recording / reproducing information by dynamically scanning a rewritable medium, wherein a defect position on the medium is sequentially detected in a continuous reproduction mode, and the detected defect position is detected. Position information is sequentially stored in a memory, and the position information stored in the memory is recorded in a table area on the medium in response to the end of the continuous reproduction mode or the end of reproduction of a predetermined range on the medium. Recording and playback method. 2. A recording / reproducing method for recording / reproducing information by dynamically scanning a rewritable medium, wherein a defect position detecting step for detecting a defect position on the medium in a continuous reproduction mode; A defect position storing step of sequentially storing position information on a defect position detected by the step in a memory; and responding to the end of the continuous reproduction mode or the end of reproduction of a predetermined range on the medium by storing the position information stored in the memory. A recording step for recording data in a table area on a medium. 3. A recording / reproducing method for recording / reproducing information by dynamically and continuously scanning a medium carrying a series of information divided in sector units, wherein a defective sector is detected in a continuous reproducing mode. A defect position storing step of sequentially storing the position information of the defective sector detected by the defective sector detection step in a memory as a defect position; and terminating the continuous reproduction mode or storing the position information stored in the memory in the medium. A table recording step of recording in a table area on a medium in response to the end of reproduction of a predetermined range. 4. When storing the position information in a memory,
4. The method according to claim 1, wherein predetermined flag information is added to the position information and stored, and the position information is recorded together with the flag information at the time of recording in a table area on a medium. Recording and playback method. 5. The recording / reproducing method, further comprising: a memory storage step of reading out position information stored in a table area on the medium and storing the read out position information in a memory; 5. The recording / reproducing method according to claim 1, further comprising: a defect position skipping step of skipping the defect position when it reaches. 6. The recording according to claim 5, wherein, in the continuous recording mode, information of a predetermined data amount is recorded in a divided area obtained by dividing a recording / reproducing area of the medium for each predetermined data amount. Playback method. 7. The recording / reproducing method according to claim 5, further comprising the step of storing flag information indicating the skipped defect position in a memory in a continuous recording mode. Recording / reproducing method described in 1. 8. The recording / reproducing method according to claim 5, wherein in the memory storing step, the flag information is read together with the position information and stored in the memory. 9. The recording / reproducing method according to claim 1, further comprising a flag information storing step of changing flag information corresponding to the skipped defect position in a continuous recording mode and storing the changed flag information in a memory. 9. The recording / reproducing method according to item 8. 10. In response to the end of the continuous recording mode or the end of recording in a predetermined range on the medium, the position information stored in the memory is recorded in a table area on the medium together with the flag information. The recording / reproducing method according to claim 7. 11. When the continuous reproduction mode is executed in a state where the flag information is stored in a memory, reproduction is skipped for information on a defect position having the flag information or a defect position in which the flag information has been changed, 10. The recording / reproducing method according to claim 7, wherein reproduction is executed for information on a defect position having no flag information or a defect position in which the flag information has not been changed. 12. The recording / reproducing method according to claim 1, further comprising a reproducing step of reproducing information recorded on a medium having flag information in a table area, wherein the reproducing step includes a step of rewriting the position information stored in the table area. Reading and storing the information in a memory; and in the continuous reproduction mode, the reproduction is skipped for the defect position having the flag information or the defect position where the flag information is changed, and the flag information does not have the flag information or the flag information is changed. 10. The recording / reproducing method according to claim 7, further comprising: a step of executing reproduction of information on a defect position that has not been performed. 13. When reproducing information of a defect position having no flag information or a defect position in which the flag information is not changed, if no defect is detected at the defect position, the defect position is stored in the memory. 13. The recording / reproducing method according to claim 11, wherein the position information on the position is deleted. 14. The recording / reproducing method according to claim 1, further comprising: in a continuous reproduction mode, when a new defect position not existing in said memory is detected, adding position information on said new defect position to said memory. 14. The recording / reproducing method according to claim 11, further comprising an additional step. 15. The updated information in the memory is updated and recorded in a table area on the medium in response to the end of the continuous reproduction mode or the end of reproduction of a predetermined range on the medium. 15. The recording / reproducing method according to 13 or 14. 16. The information to be recorded or reproduced is video information and / or audio information, wherein the information is video information and / or audio information. Or the recording / reproducing method according to 12 or 13 or 14 or 15. 17. A recording and reproducing apparatus for recording and reproducing information by dynamically scanning a rewritable medium, comprising: a defect position detecting means for detecting a defect position on the medium in a continuous reproduction mode; A memory means for sequentially storing position information on defect positions detected by the means; and a medium for storing the defect position information stored in the memory means in response to the end of the continuous reproduction mode or the end of reproduction of a predetermined range on the medium. A table recording means for recording data in an upper table area. 18. A recording / reproducing apparatus for recording / reproducing information by dynamically and continuously scanning a medium carrying a series of information divided in sector units, wherein a defective sector is detected in a continuous reproducing mode. Means for sequentially storing position information of defective sectors detected by the defective sector detection means; and end of the continuous reproduction mode or reproduction of a predetermined range of the medium on the defect position information stored in the memory means. And a table recording means for recording in a table area on the medium in response to the end. 19. The memory means, when storing the position information in the memory, adds predetermined flag information to the position information and stores the information, and the table storage means stores the position information together with the flag information. 19. The recording / reproducing apparatus according to claim 17, wherein recording is performed. 20. The recording / reproducing apparatus further comprising: a table reading means for reading defect position information stored in the table area; a memory means for storing the read defect position information; 18. A defect position skip means for skipping the defect position when the upper recording position reaches the defect position.
20. The recording / reproducing apparatus according to 8 or 19. 21. The recording / reproducing apparatus according to claim 15, wherein in the continuous recording mode, information of a predetermined data amount is recorded in a divided area obtained by dividing the recording / reproducing area of the medium for each predetermined data amount. Item 21. The recording / reproducing device according to item 20. 22. The recording apparatus according to claim 20, wherein said recording / reproducing apparatus further comprises a memory means for storing flag information indicating the skipped defect position in the continuous recording mode. Playback device. 23. The recording / reproducing apparatus according to claim 20, further comprising memory means for reading and storing the flag information together with the position information.
Or the recording / reproducing apparatus according to 21. 24. The recording / reproducing apparatus further comprising: flag information changing means for changing flag information corresponding to a defect position skipped by the defect position skip means and storing the flag information in a memory. 23
The recording / reproducing apparatus according to claim 1. 25. The recording / reproducing apparatus according to claim 1, further comprising: a table on a medium including the flag information and the position information stored in the memory means, in response to the end of the continuous recording mode or the end of recording in a predetermined range on the medium. 25. The recording / reproducing apparatus according to claim 22, further comprising table recording means for recording in an area. 26. When the continuous reproduction mode is executed in a state where the flag information is stored in the memory means, reproduction is skipped for a defect position having the flag information or a defect position in which the flag information has been changed. 25. The recording / reproducing apparatus according to claim 22, wherein reproduction is executed for information on a defect position having no flag information or the flag information not being changed. 27. The recording / reproducing apparatus further comprises: table reading means for reading the position information stored in the table area; and memory means for storing the read position information. The reproduction is skipped for the defect position having the flag information or the defect position information in which the flag information is changed, and the reproduction is executed for the defect position information having no flag information or the defect information in which the flag information is not changed. 25. The recording / reproducing apparatus according to claim 22, wherein 28. When the recording / reproducing apparatus reproduces information on a defect position having no flag information or a defect position in which the flag information has been changed, if no defect is detected at the defect position, a memory is used. 28. The recording / reproducing apparatus according to claim 26, wherein position information about a defect position on the means is erased. 29. When the recording / reproducing apparatus detects a new defect position which is not present on the memory means in the continuous reproduction mode, the recording / reproducing apparatus adds position information on the new defect position to the memory means. Claim 2
29. The recording / reproducing apparatus according to 6 or 27 or 28. 30. The recording / reproducing apparatus according to claim 16, wherein said recording / reproducing apparatus updates and records the updated information of the memory means in a table area on the medium in response to the end of the continuous reproducing mode or the end of reproduction of a predetermined range on the medium. Claim 28 or Claim 2
10. The recording / reproducing apparatus according to 9. 31. The information recorded or reproduced is video information and / or audio information.
Or the recording / reproducing apparatus according to 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30.