KR20090024928A - Recording medium, method for recording/reproducing on/from recording medium and apparatus for the same - Google Patents

Abstract

A recording medium, a method for recording/reproducing on/from the recording medium and an apparatus for the same are provided to prevent defect of a high-capacity recording medium effectively, arranging a defect list according to recorded defect address information. A recording medium comprises: a step for recording defect information without duplication in an allocated area within a temporary management area of a recording medium; a step for determining whether a defect list was arranged according to the recorded defect address information or not; and a step(S140) arranging the defect list according to the decision result. The allocated area within the temporary management area of the recording medium is a TDMS update unit.

Description

Recording medium, recording medium recording / reproducing method and recording medium recording / reproducing apparatus {Recording Medium, Method for Recording / Reproducing on / from Recording Medium and Apparatus for the same}

The present invention relates to a recording medium, a recording medium recording / reproducing method, and a recording medium recording / reproducing apparatus, and more particularly, to a method and apparatus for managing a defect occurring in a recording medium during recording / reproducing, and to use such a method and a device. The present invention relates to a recording medium capable of recording / reproducing.

Recent rapid development of technology has led to the emergence of high-capacity recording media. Examples of such recording media include compact discs (CDs) and digital versatile discs (DVDs). In addition to these recording media, there are recording media that have dramatically increased capacity as next generation recording media. Such recording media include Blu-ray Disc, Near Field Recording Medium, and the like. In addition, multiple recording media have emerged to further increase the capacity of the recording media. In the case of such high-capacity, multi-layer recording media, there is a need for a more efficient defect area management method when a defect occurs.

The present invention is to solve the above problems, and relates to a recording medium defect area management method and to a recording medium recording / reproducing apparatus using the same to effectively solve the defect when a high capacity recording medium occurs. The present invention also relates to a recording medium capable of recording / reproducing through the above-described defect area management method and a recording medium recording / reproducing apparatus.

The present invention provides a method comprising the steps of: recording information of a defect without duplication in an allocated area in a temporary management area of a recording medium; Determining whether the defect list is sorted according to recorded address information; It is an object of the present invention to provide a defect area management method comprising the step of sorting the defect list according to the determination result.

The allocated area in the temporary management area of the recording medium is a TDMS Update Unit.

The recording of the defect information without duplication is characterized in that the information of the defect occurring in one area is not duplicated and recorded.

The defect information may include address information of an area where the defect occurs, a type of the defect, and address information of an area replacing the defect area.

The address information of the defect is characterized in that the first physical sector number of the region where the defect has occurred.

The sorting of the defect list may be performed by sorting from the area where the defect list needs to be sorted.

The unit of the zone is characterized in that the predetermined size.

The constant size is characterized in that one cluster (one cluster).

In addition, the present invention comprises the steps of: recording information of a defect in the form of a defect list without duplication in a first area including a header, and updating the information of the defect list in a header; When the recording of the first area is completed, recording the defect information in the form of a defect list in a second area that does not include a header without duplication, and updating the information of the recorded defect list in the header of the first area. ; And sorting the defect list recorded in the first area and / or the second area according to the address information of the defect.

The first region may be configured in a predetermined unit.

The second region may be configured of a plurality of predetermined units.

The predetermined unit is characterized in that one cluster (one cluster).

The first area and the second area are areas allocated for recording a defect list in a management area of a recording medium.

When sorting the defect list, the header of the first area is updated.

The present invention also provides a method comprising: recording defect information in a form of a defect list without duplication in an Nth area including a header, and updating the information of the defect list in a header of the Nth area; When the recording of the N-th area is completed, the defect information is recorded in the form of a defect list in the N + 1th area including the header without duplication, and the information of the N + 1th recorded defect list is the N + 1th Updating to the header of the; And sorting the recorded defect list according to the address information of the defect.

The Nth area and the N + 1th area are areas allocated for recording a defect list in a management area of a recording medium.

The N th region and the N + 1 th region are characterized by having a predetermined size as a unit.

The predetermined unit is characterized in that one cluster (one cluster).

After sorting the defect list, the information of the sorted defect list is updated in a header of an area in which information of the newly sorted defect list is recorded.

The N + 1 is characterized in that less than or equal to the number of units allocated for allocation of the defect list.

The present invention also provides a method for detecting a defective area of a recording medium; Recording the information on the found defect area in the allocated area of the temporary management area in the form of a defect list without duplication, and updating the information of the defect list in the header of the defect list; A method for recording / reproducing a recording medium, comprising closing the recording medium and recording the information recorded in the temporary management area into the final management area.

The defect list is recorded in units of a predetermined size.

The defect list may include only one header.

The defect list is characterized in that a header is included for each fixed unit.

The header allocated to each of the predetermined units is characterized by including information on a defect list recorded in the unit to which the header is allocated.

In the defect list, the information of the header allocated to each predetermined unit may be recorded in an upper header.

And determining whether the defect information in the defect list is sorted, and sorting the defect list according to the determination result.

In addition, the present invention includes a pickup unit for injecting a beam to the recording medium, and receives the light reflected from the recording medium; A control unit that detects a defect of the recording medium from the light reflected from the recording medium, records information about the found defect in the form of a defect list without duplication in a management area, and updates the information of the defect list in a header It provides a recording medium recording / reproducing apparatus comprising a.

The control unit may determine whether the defect list is sorted according to the address information of the defect, and sort the defect list according to the determination result.

The present invention includes a management area including at least one defect recording unit, wherein the defect recording unit includes an area allocated for recording a defect list and a header including information on the defect list. The header provides a recording medium comprising information on the defect recording unit.

The defect recording unit may be assigned based on a predetermined size.

According to the recording medium, the recording medium recording / reproducing method, and the recording / reproducing apparatus according to the present invention, it is possible to use an efficient and economical recording medium of a high capacity recording medium.

The objects, features and advantages of the present invention will become apparent from the embodiments with reference to the accompanying drawings. Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

In addition, the terminology used in the present invention was selected as a general term that is widely used at present, but in certain cases, the term is arbitrarily selected by the applicant, and in this case, since the meaning is described in detail in the corresponding part of the present invention, a simple term It is to be understood that the present invention is to be understood as meanings of terms other than names.

In this regard, in the present invention, "recording medium" means any medium on which data is recorded or is recordable, and encompasses all mediums regardless of a recording method such as a disc, a magnetic tape, and the like. Hereinafter, the present invention will be described by using a disc (disc), especially a "Blu-ray Disc (BD)" as a recording medium for convenience of description, but the technical concept of the present invention is equally applicable to other recording media. The possibilities will be self-evident.

In addition, the present invention will be described based on a recording type (BD-R) recording medium capable of recording once in a Blu-ray Disc (BD), but the idea of the present invention is also applicable to other types of recording media.

In addition, in the present invention, "management area" means an area for recording management information of a recording medium. In the present invention, the management area will be described based on a temporary management area (TDMA), but the present invention can also be applied to a final management area (DMA). In addition, the structure and information on the temporary management area (TDMA) and the final management area (DMA) will be described in detail with reference to FIGS. 1 and 2.

In addition, the recording medium is composed of certain units. As an example, the recording medium may include a unit called a cluster, and the cluster may include a data frame which is a lower unit. For example, one cluster may be composed of 32 data frames. However, the name and number of each unit may vary depending on the type of recording medium.

Figure 1 shows one embodiment of a single-layer recording medium according to the present invention. The recording medium shown in FIG. 1 is largely composed of a data zone and a lead-in / out zone. The lead-in / out area includes a temporary management area (TDMA) and a final management area (DMA). In addition, the data area of the recording medium includes an inner spare area (ISA), an outer spare area (OSA), and a user data area. The size of the spare regions may be fixedly allocated or may be allocated flexibly. For example, the inner spare area ISA may be allocated to a predetermined size, and the outer spare area OSA may be assigned to a flexible size.

On the other hand, the temporary management area TDMA and the final management area DMA have the following relationship. Due to the characteristics of a disc that can be written once, a temporary management area (TDMA) is recorded not only with defect management information generated during use of the disc but also with general management information indicating a recording state on the disc. Thereafter, when the disk is closed, the disk is no longer able to record, so that the final management information in the temporary management area TDMA is transferred to the final management area DMA. Therefore, management information is recorded in the temporary management area (TDMA) until the disk is closed, and when the disk is closed, final management information in the temporary management area (TDMA) is transferred into the final management area (DMA). After recording, the disc is reproduced by utilizing the management information in the final management area (DMA).

In addition, in the embodiment shown in FIG. 1, the temporary management area includes three areas of TDMA0, TDMA1, and TDMA2 from the inner circumference of the recording medium. Some of the TDMA areas may be allocated with a fixed size, and the remaining areas may be allocated with flexibility depending on the degree of defects occurring in the recording medium. For example, TDMA0 located at the innermost circumference of the recording medium may be allocated to a certain size, and the remaining TDMA1 and TDMA2 may be allocated flexibly. That is, they may or may not be allocated as needed.

At this time, the TDMA1 and TDMA2 areas can be allocated in the spare areas ISA and OSA of the recording medium. At this time, TDMA1 and TDMA2 may not be allocated the smallest. In addition, as much as possible, the size of each spare area (ISA, OSA) may be allocated.

The use of the temporary management area shown in FIG. 1 may proceed in a certain order. For example, the following procedure may be performed. It is also possible to record from the inner peripheral area of the recording medium to the TDMA0-> TDMA1-> TDMA2 area.

When the use of the temporary management area (TDMA) allocated in the recording medium is completed or there is a command from the host, the recording medium can be closed. Closing refers to a step in which recording is terminated in user data of a recording medium, and then only reproduction is possible.

As the recording medium is closed, the most recent temporary management information among the management information recorded in the temporary management area TDMA is recorded in the final management area DMA. The final management area is allocated to the lead-in area and lead-out area of the recording medium. In the embodiment shown in Fig. 1, the final management area consists of DMA1, DMA2, DAM3, and DMA4. However, the arrangement and number of the final management area shown in FIG. 1 are merely embodiments, and various embodiments may be possible without departing from the spirit of the present invention.

The same information is recorded for the information recorded in each final management area (DMA1, DMA2, DAM3, DMA4). However, other information may be recorded for information related to the location of each final management area.

The temporary management area and the final management area may be allocated to a certain size. For example, in the case of the TDMA0 region, 2048 clusters may be allocated. In addition, as described above, in the case of the TDMA1 and TDMA2 areas, they can be allocated fluidly. If you do not need to allocate additional temporary management areas, they may not be allocated. A maximum of 4096 clusters may be allocated to the TDMA1 region, and a maximum of 196608 clusters may be allocated to the TDMA2 region.

2 illustrates an embodiment of a dual layer recording medium according to the present invention. Like a single layer recording medium, a lead in / out area and a data area are provided. In addition, the outer periphery area of the data area is called an outer zone. In addition, temporary management areas TDMA0 to TDMA5 and final management areas DMA1 to DMA4 are provided.

Further, the inner spare areas ISA0 and ISA1 and the outer spare areas OSA0 and OSA1 are allocated to each recording layer. In addition, as in the single-layer recording medium, the size of the inner spare area can be fixed, and the size of the outer spare area can be flexibly assigned.

In the case of the temporary management area, TDMA0 and TDMA1 can be allocated to the lead-in / out area of the recording medium. Just as TDMA0 is fixedly assigned in the single-layer recording medium, TDMA0 and TDMA1 are fixedly assigned in the dual-layer recording medium. In addition, the sizes of TDMA0 and TDMA1 may also be fixedly assigned. For example, 2048 clusters may be allocated to TDMA0 and TDMA1.

In addition, a temporary management area may be additionally allocated. For example, TDMA2 to TDMA5 may be further allocated, and may be allocated to ISA0, OSA0, ISA1, and OSA1 in order. In addition, the size of the additionally allocated areas of TDMA2 to TDMA5 may not be allocated at least. It can be allocated to the size of each allocated spare area to the maximum. In addition, TDMA in a dual layer may be used in a certain order. For example, they may be allocated in the following order. TDMA0-> TDMA1-> TDMA2-> TDMA3-> TDMA4-> TDMA5.

As shown in Fig. 2, the dual layer recording medium according to the present invention includes a total of four final management areas (DMA1, DMA2, DMA3, and DMA4). In each DMA area, the same area is allocated to each of the recording layers L0 and L1. That is, as shown in FIG. 2, DMA1 is also assigned to L0, and DMA1 is also assigned to a position corresponding to L1. Thus, the same DMA area allocated to each layer can be used as one unit. Like the single layer recording medium, the latest management information at the time of closing the recording medium is repeatedly recorded in the DMA area.

FIG. 3 illustrates an embodiment in which a temporary disc management structure (TDMS) included in a temporary management area (TDMA) is recorded. Before the recording medium is closed, information on defects occurring in the recording medium is recorded by using a temporary disk management structure (TDMS). The Temporary Disc Management Structure (TDMS) includes a Temporary Disc Definition Structure (TDDS) and a Temporary Defect List (TDFL). In addition, the recording method may further include sequential recording range information (SRRI) or a space bit map (SBM).

There are several types of methods for recording the recording medium according to the present invention. For example, in recording a recording medium, there are a sequential recording mode (SRM) and a random recording mode (RRM). In short, the continuous recording mode divides the recording area of the recording medium into a plurality of sessions, and makes it possible to continuously record data in each session or to record in another session. The use state of the recording area in the continuous recording mode can be indicated by using the continuous recording information SRRI.

The random recording mode (RRM) allows recording when there is an unrecorded area in the recording area of the recording medium. At this time, recording may be performed in units of clusters. In the random recording mode RRM, the use state of each cluster may be indicated through the space bit map SBM. Although the present invention will be described based on the continuous recording mode (SRM), it is obvious that the present invention can be applied to the random recording mode (RRM).

In addition, in recording the recording medium, there are cases where the temporary defect list, the temporary disc definition structure, the continuous recording information, or the space bit map must be recorded many times. At this time, the "TDMS Update Unit" may be used for efficient recording. In particular, Figure 3 shows an embodiment of a "TDMS Update Unit". The TDMS Update Unit records information updated among TDFL and SRRI (or SBM). Therefore, as shown in FIG. 3, if not updated among the TDFL or the SRRI (or SBM), the TDMS Update Unit is not recorded. However, the TDDS is always recorded in the last area of each TDMS Update Unit.

SRRI and TDDS are shown in the first TDMS Update Unit shown in FIG. That is, the information on the used area is updated due to a change, but there is no change on the defect information. Second, in the case of the TDMS Update Unit, only defects occurring in the recording medium are updated. Also, as in the case of the last TDMS Update Unit, only SRRI is updated.

In FIG. 3, however, it is shown that the TDDS has a pointer showing information of a previously recorded area. In the case of the TDDS, it has information on the latest SRRI and TDFL, and each time the TDMS Update Unit is recorded, the TDDS is updated and recorded. Therefore, TDDS may be allocated for each TDMS Update Unit.

In addition, each TDMS Update Unit may be configured as one cluster or a plurality of clusters.

4 illustrates an embodiment of one TDMS Update Unit according to the present invention. As described above, the TDMS Update Unit may include TDFL, SRRI, and TDDS. Each of the components may be located for efficient management of the recording medium. TDFL is assigned to the front of the TDMS Update Unit. For example, it may be allocated to the first data frame of the first cluster of each TDMS Update Unit. In addition, the TDDS may be allocated to the last data frame of the last cluster of each TDMS Update Unit. In addition, SRRI may be assigned to the frame immediately before the TDDS. In addition, even when only one of SRRI or TDFL is recorded, each position is as described above.

In addition, TDFL and SRRI in the TDMS Update Unit can be extended. In the case of a TDFL, it may extend in the direction of the TDDS. Also, in the case of SRRI, it can be extended in the direction of the TDFL (see arrow direction). Also, an area not recorded between the TDFL and the SRRI may be recorded at 00h.

In addition, in the case of the TDFL Update Unit, there may be a limitation in size. As an example, the smallest one may be allocated to one cluster. The maximum number may vary depending on the type of recording medium and the number of layers. For example, in the case of a single layer recording medium, each TDMS Update Unit may be allocated up to four clusters. In addition, in the case of the dual layer recording medium, each TDMS Update Unit may be allocated up to eight clusters.

In addition, the present invention will be described after dividing into the first embodiment and the second embodiment as follows. In addition, the elements described above are elements commonly applied to the first embodiment and the second embodiment.

First Example

5 to 8 show a first embodiment of the present invention.

5 illustrates one embodiment of a TDFL structure in accordance with the present invention. The TDFL according to the present invention includes a header, a defect list recording area, and a terminator. Herein, the header records information on a defect list recorded after the header. An example of such information may include an identifier (DFL Identifier), DFL update information, the number of DFL entries, and the like.

The defect list DFL is recorded in the area after the header. The defect list includes information of defects occurring in the recording medium, and the defect information may be recorded in the form of a defect list entry (DFL entry). The defect list entry may include address information of a region in which a defect has occurred, a defect type, and information of a region recorded in place of a region in which a defect has occurred.

In addition, when the recording of the defect list is finished, the terminator 130 may be recorded to inform that the recording of the defect list is finished.

In addition, in recording the TDFL area, each area may be divided into cluster units. Also, the TDFL area may not be recorded in the TDMS Update Unit. The maximum size may vary depending on the type of recording medium. For example, in the case of a single layer recording medium, it may be 3 clusters + 31 data frames. In addition, in the case of a dual-layer recording medium, it may be 7 clusters + 31 data frames.

6 illustrates an embodiment of a TDFL region in a TDMS Update Unit. When N clusters for recording are allocated to the TDFL, a method of recording a defect list recorded in the TDFL is shown. As described above, a header for recording information of the entire DFL is allocated to the first cluster (0th cluster) of the TDFL. In this case, one header may be allocated to the TDFL in one TDMS Update Unit.

After the header, a list of defects occurring in the recording medium in the form of a DFL entry is recorded. At this time, it is assumed that there is no duplicate defect information in recording the defect information. That is, the information of the defect in the TDFL is recorded only once, and the recorded area is not recorded again. For example, when the defect information for the j-th region is recorded and additionally record the defect information for the k-th region later, only the defect information for the k-th region found later is recorded. This enables efficient use of the recording medium space.

Further, when the defect entries are recorded in the order in which the defects occur without duplication, the defect entries can be aligned. At this time, there may be various methods for aligning the defect entries. For example, the information may be sorted according to address information of a region where a defect occurs. If sorting is performed here, information about the rearranged information may be recorded in the header. In addition, the sorting can be performed according to a certain recording unit. For example, recording may be performed in units of clusters.

In addition, when recording in units of a certain size such as a cluster, information recorded in each cluster may be recorded in a header in the TDFL area. In addition, when the TDFL consists of at least one cluster, each cluster and the order of use within the cluster may be used in the direction in which the address number of each region increases.

If a series of recordings are made in the defect list recording area, a case of additional recording in the defect list recording area may occur. In such a case, it is preferable to continuously record in the previously recorded defect list recording area for efficient utilization of the recording medium.

In addition, when a defect list is additionally recorded, the defect list consisting of a series of DFL entries may not be aligned. In this case, as described above, the defect list may be sorted according to the address information of the DFL entry, and the information of the sorted defect list may be recorded in the header. At this time, when the defect list is sorted, the entire defect list may be sorted, or the clusters requiring sorting may be sorted. If you sort from the cluster that needs to be sorted, the cluster that starts sorting and all subsequent clusters will sort. The case where a defect list is recorded in units of a certain unit such as a cluster will be described below with reference to a more specific example.

7 shows an example of a recording / reproducing method according to the first embodiment of the present invention. When the TDMS Update Unit consists of at least one cluster, a header may be allocated to the first data frame of the first cluster. Subsequent areas may be allocated as space for recording the defect list. First, a defect list is recorded in the first cluster including the header (s1). When writing is completed in the first cluster, the second cluster, which is the next cluster, is used (s2). However, when recording information in the second cluster, the header is also used in the first cluster. In addition, the third and fourth clusters are recorded in the same manner. When recording each cluster, the information of each cluster is recorded in the header area of the first cluster (s3 and s4).

Thereafter, a case of sorting the defect list may occur. This is because the recording medium is recorded in the order in which defects occur. As an example, when the third cluster is aligned (s5), it is preferable to rearrange the cluster afterwards. The third and fourth clusters may be aligned, and information about the changed third and fourth clusters may be rewritten in a header in the first region (s6).

8 shows an embodiment of a recording medium recording / reproducing method according to the present invention. First, recording / reproducing of the recording medium is started (s10). A defect may be found during recording / reproducing of the recording medium (s20). First, after finding a defect, information of the found defect is recorded in the TDFL in the TDMS Update Unit. If recording is completed in the TDFL area of the first cluster (s30), defect information is recorded in the header of the first cluster and the nth cluster (s40). Here, the n th cluster is a cluster which is not completely used, and may be sequentially allocated from the second cluster.

At this time, if the use of the first cluster is not completed (s30), the defect information is recorded in the first cluster (s50).

If the defect information recorded in the TDFL is not aligned, it may be sorted again (s60). This can be done with a certain period of use, or when an unordered defect list is found. If it is necessary to sort the k th cluster, it is preferable to sort again from the k th cluster to the n th cluster which is the most recently recorded cluster. That is, the k to n th cluster may be rearranged and information about the k th n th cluster may be updated again in the header region of the first cluster (S70). After that, the recording / reproducing of the recording medium can be ended, and if the recording / reproducing is not finished, the steps S10 to S70 can be repeated.

2nd Example

9 to 13 show a second embodiment according to the present invention.

9 is an embodiment of a TDFL region according to a second embodiment of the present invention. 9 shows a case where n clusters are allocated for recording the TDFL. In the first embodiment shown in FIG. 5, one header is allocated to the entire TDFL area. In contrast, the second embodiment of FIG. 9 illustrates a case in which one header is allocated to each cluster constituting the TDFL region.

However, the header may be allocated to each cluster or the header may be allocated to several clusters. Or, if necessary, the header may be allocated to each area of one cluster size or less. This is to assign a header to a certain unit size for more efficient use, which may vary depending on the choice of the recording medium and recording / playback device, manufacturer and supplier.

In addition, in the embodiment shown in FIG. 9, headers allocated to each cluster unit may record information on each allocated area.

In addition, although not shown in FIG. 9, upper headers of headers allocated to each region may also exist. This can be assigned to the first cluster in the TDFL, or it can specify a separate area. In the case of the upper header, after finishing recording the headers allocated to the clusters of the TDFL in the TDMS Update Unit, the header may be finally recorded only once. Alternatively, information may be recorded periodically after recording a certain unit.

FIG. 10 shows an embodiment in which a defect list is recorded in the recording medium TDFL according to the second embodiment of the present invention. Like the embodiment shown in Fig. 6, each defect list is recorded without duplication. Redundancy here refers to the area where a defect occurred. In other words, it means that the information on the defect occurring in any one area is recorded only once. In addition, as mentioned in the embodiment of FIG. 9, a header to be allocated may be allocated for each unit having a predetermined size.

In addition, in the second embodiment of the present invention, since the header is allocated for each constant recording unit, at least one header can be allocated in one TDFL. Accordingly, each header may include information indicating which area a header is. As an example, when headers are allocated on a cluster basis, information on the number of clusters corresponding to a cluster may be recorded in each header.

11 shows an embodiment of a header of a TDFL according to the second embodiment of the present invention. The header of the TDFL includes information indicating which header is assigned to each recording unit, in addition to the number of the DFL Identifier, the DFL update information, and the defect list in the first embodiment.

That is, the header shown in FIG. 11 represents a header assigned to the k-th cluster. In addition, the header may be located at the front of each cluster. That is, it may be allocated to the first data frame. Also, as an example, the header may be allocated to the third byte, and the size thereof may be allocated to one byte. However, this is only one embodiment, and it is obvious that various embodiments of the header allocated to each cluster or recording unit of each TDFL are possible without departing from the spirit of the present invention.

12 is an example of the use of a region in a TDFL in accordance with a second embodiment of the present invention. First, use the first cluster in the TDFL. That is, after recording the defect list in the defect list recording area included in the first cluster, information about the defect is recorded in the header (s1 '). The second to fourth clusters can also be used in the same manner (s2 'to s4'). You can then rearrange the defect list in the TDFL. For example, it is possible to reorder the third cluster, and to rearrange all subsequent third and fourth clusters. As can be seen from the example shown in Fig. 12, in the second embodiment of the present invention, by allocating a recording unit for each cluster in the TDFL, the work required for recording in each cluster can be performed, which is efficient.

13 is an embodiment of a recording / reproducing method according to the second embodiment of the present invention. Recording / reproducing of the recording medium may be started (s110), and a defective area of the recording medium may be found during recording / reproducing (s120). Information of the region where the defect is found may be updated to the K-th cluster in the TDFL (s130). K is a cluster in which recording is not completed in TDFL, and can be used in a fixed order. For example, the recording may be performed in a direction in which the address of each area increases. Also, in the second embodiment, only the cluster being recorded is used, and other clusters are not used for recording.

In recording the defect list in the TDFL, the defect list may be rearranged (s140). In this case, only the cluster that needs to be sorted and the cluster after that can sort the information again. As an example, if the k-th cluster needs to be sorted again, the k-th cluster and the N-th cluster, which is the last cluster recorded, are rearranged (s150). The information on the newly sorted defect list may be recorded in the header of the cluster in which the newly sorted defect list is recorded.

Subsequent recording / playback may be ended, and when recording / playback is not ended, recording / playback may be performed while repeating the steps s110 to s150 (s160).

14 is an embodiment of a recording / reproducing apparatus according to the present invention. The recording medium recording / reproducing apparatus according to the present invention includes a pickup section 11, a controller 12, a signal processing section 13, a servo section 14, a memory 15, a microcomputer 16, an AV decoder 17, AV encoder 18 is included. Among these components, a device in which elements such as the pickup section 11, the signal processing section 13, the servo section 14, the memory 15, and the microcomputer 16 are combined is called a recording / playback section 20. Can be. The recording and playback section 20 may be referred to as a drive, which may be utilized as a computer peripheral device.

The pickup unit 11 according to the present invention can write data directly to a disc or read data recorded on a disc, and read a signal of a designated area through the control of the microcomputer 16, the servo unit 14, and the like. I can ship it.

The controller 12 is responsible for the control of the entire component, and in particular, in connection with the present invention, a user command or the like is received through an interface with a user, and a recording / playback command for recording or reproducing data on a disc is provided. The recording and reproducing section 20 is transmitted.

The signal processing unit 13 may serve to receive a signal read out from the pickup unit 11 and restore the signal to a desired signal value, or modulate a signal to be recorded into a signal recorded on a disk.

The servo unit 14 may control the pickup unit 11 to accurately read a signal from the disk or to accurately record a signal on the disk.

The memory 15 may temporarily store management information and data including defect management information.

The microcomputer 16 may be in charge of overall control of the pickup unit 11, the servo unit 14, the signal processor 13, and the memory 15.

The AV decoder 17 decodes the signal read out from the disc under the control of the controller 12, restores it to desired information, and provides the same to the user.

The AV encoder 18 converts an input signal into a signal of a specific format, for example, an MPEG2 transport stream, and provides it to the signal processor 13 under the control of the controller 12 to perform a function of recording a signal on a disc. Done.

In the present invention, the functions of the controller 12 and the microcomputer 16 may operate by dividing into a first control unit and a second control unit, respectively. Alternatively, the functions of the controller 12 and the microcomputer 16 may be combined to operate as a single control unit.

The controller according to the present invention can determine a defect using a signal read out from the recording medium at the time of recording / reproducing of the recording medium, and can record the information of the defect in a designated area of the recording medium. For example, the recording medium may be recorded in the temporary management area of the recording medium, and may be recorded in the TDFL area in the temporary management area. In addition, when the defect information is recorded in the TDFL area, the defect information can be recorded so as not to overlap. The overlap here means that the defect information for the same area does not overlap as described above. In addition, one header may be allocated in one TDFL or one header may be allocated for each constant size unit. For example, a header may be allocated to each cluster.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

1 is an embodiment of a recording medium according to the present invention.

2 is an embodiment of a recording medium according to the present invention.

3 is an embodiment of a recording medium management area according to the present invention.

4 is an embodiment of a recording medium management area according to the present invention.

5 is an embodiment of a recording medium management area according to the first embodiment of the present invention.

6 is an embodiment of a recording medium management area according to the first embodiment of the present invention.

7 is an example of a recording medium recording / reproducing method according to the first embodiment of the present invention.

8 is an embodiment of a recording medium recording / reproducing method according to the first embodiment of the present invention.

9 is an embodiment of a recording medium management area according to the second embodiment of the present invention.

10 is an embodiment of a recording medium management area according to the second embodiment of the present invention.

11 is an embodiment of a header included in a management area of a recording medium according to the second embodiment of the present invention.

12 is an example of a recording medium recording / reproducing method according to the second embodiment of the present invention.

Fig. 13 is an embodiment of a recording medium recording medium recording / reproducing method according to a second embodiment of the present invention.

14 is an embodiment of a recording medium recording / reproducing apparatus according to the present invention.

Claims (38)

Recording the defect information without duplication in the allocated area in the temporary management area of the recording medium; Determining whether the defect list is sorted according to recorded address information; And sorting the defect list according to the determination result. The method of claim 1, The allocated area in the temporary management area of the recording medium is a TDMS Update Unit. The method of claim 1, And recording the defect information without duplication does not record duplicate defect information in one area. The method of claim 1, And the defect information includes address information of an area where the defect has occurred, a type of the defect, and address information of an area replacing the defect area. The method of claim 3, wherein And the address information of the defect is the first physical sector number of the region where the defect has occurred. The method of claim 1, The sorting of the defect list may include sorting again from an area in which the defect list needs to be sorted. The method of claim 6, The unit of the zone is a defective area management method characterized in that the predetermined size. The method of claim 7, wherein The predetermined size is a defect area management method, characterized in that one cluster (one cluster). Recording, in the first region including the header, information on the defects in the form of a defect list without duplication, and updating the information on the defect list in the header; When the recording of the first area is completed, recording the defect information in the form of a defect list in a second area that does not include a header without duplication, and updating the information of the recorded defect list in the header of the first area. ; And arranging a defect list recorded in the first area and / or the second area according to the address information of the defect. The method of claim 9, The first area is a defect area management method, characterized in that configured in a predetermined unit. The method of claim 9, The second area is a defect area management method, characterized in that composed of a plurality of predetermined units. The method of claim 10 or 11, The predetermined unit is a defect area management method, characterized in that one cluster (one cluster). The method of claim 9, And said first area and said second area are areas allocated for recording a defect list in a management area of a recording medium. The method of claim 9, And the header of the first area is updated when sorting the defect list. Recording the defect information in the form of a defect list without duplication in the N-th area including the header, and updating the information of the defect list in the header of the N-th area; When the recording of the N-th area is completed, the defect information is recorded in the form of a defect list in the N + 1th area including the header without duplication, and the information of the N + 1th recorded defect list is the N + 1th Updating to the header of the; And sorting the recorded defect list according to the address information of the defect. The method of claim 15, And the Nth area and the N + 1th area are areas allocated for recording a defect list in a management area of a recording medium. The method of claim 15, And the N th region and the N + 1 th region have a predetermined size as a unit. The method of claim 17, The predetermined unit is a defect area management method, characterized in that one cluster (one cluster). The method of claim 15, And sorting the defect list, and updating the information of the sorted defect list in a header of an area in which information of the newly sorted defect list is recorded. The method of claim 15, The N + 1, the defect area management method, characterized in that less than or equal to the number of units allocated for allocation of the defect list. Finding a defective area of the recording medium; Recording the information on the found defect area in the allocated area of the temporary management area in the form of a defect list without duplication, and updating the information of the defect list in the header of the defect list; And recording the information recorded in the temporary management area into a final management area while closing the recording medium. The method of claim 21, And the defect list is recorded in units of a predetermined size. The method of claim 22, And the defect list includes only one header. The method of claim 22, And the defect list includes a header for each predetermined unit. The method of claim 24, And the header allocated to each predetermined unit includes information on a defect list recorded in the unit to which the header is assigned. The method of claim 24, In the defect list, information of a header allocated to each predetermined unit may be recorded in an upper header. The method of claim 21, And determining whether the defect information in the defect list is sorted, and sorting the defect list in accordance with the determination result. A pickup unit for injecting a beam into a recording medium and receiving light reflected from the recording medium; A control unit that detects a defect of the recording medium from the light reflected from the recording medium, records information about the found defect in the form of a defect list without duplication in a management area, and updates the information of the defect list in a header Recording medium recording / reproducing apparatus comprising a. The method of claim 28, The control unit may determine whether the defect list is sorted according to the address information of the defect, and sort the defect list according to the determination result. The method of claim 28, And one header is assigned to the entire management list. The method of claim 28, And the header may be allocated for each predetermined size unit of the management list. The method of claim 31, wherein The recording medium recording / reproducing apparatus, characterized in that for recording the information of the header allocated to the predetermined size in the upper header. The method of claim 31, wherein And the header includes information of a unit to which the header is assigned. The method of claim 33, wherein And the information of the unit to which the header is allocated indicates the number of units in the defect list. Includes a management area containing at least one defect recording unit, The defect recording unit includes an area allocated for recording a defect list and a header including information on the defect list. And the header includes information on the defect recording unit. 36. The method of claim 35 wherein And the defect recording unit is allocated based on a predetermined size. The method of claim 36, The predetermined size is a recording medium, characterized in that one cluster (one cluster). 36. The method of claim 35 wherein And the upper header for the header allocated to each of the defect recording units in the management area.

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