KR20100121200A - Recording medium, data recording/reproducing method, and data recording/reproducing apparatus - Google Patents

Abstract

PURPOSE: A recording medium, and a data recording/reproducing method and apparatus are provided to reduce the size of defect management information of a recording medium. CONSTITUTION: A recording medium comprises a data area in which user data is recorded, an inner area which is located inside the data area in the circumferential direction, and an outer area which is located outside the data area in the circumferential direction. The inner area or/and the outer area include one or more disk management areas. The disk management areas comprise a defect list area in which a defect list entry is recorded and a defect management area including a terminator in which information on the termination of the defect list area is recorded. The size of the defect management area is determined according to the size of the defect list area, and the defect management area comprises a header area in which information on the number of defect list entries is recorded.

Description

RECORDING MEDIUM, DATA RECORDING / REPRODUCING METHOD, AND DATA RECORDING / REPRODUCING APPARATUS}

The present invention relates to a recording medium, a data recording / reproducing method, and a data recording / reproducing apparatus, and more particularly, to a method and apparatus for managing defects occurring in a recording medium during data recording / reproducing, and using the method and apparatus. 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, in order to further increase the capacity of the recording medium, a multilayer recording medium having a plurality of recording layers has also emerged.

If a defect occurs in the recording medium when recording / reproducing data using such a high capacity, multi-layer recording medium, defect management is required. Therefore, there is a need for a more efficient method of managing defects occurring in the recording medium.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to enable the most efficient management of defects when recording / reproducing a recording medium having a defect.

Accordingly, the present invention provides a recording medium comprising a data area in which user data is recorded, an inner area located on an inner circumferential side of the data area, and an outer area located on an outer circumferential side, wherein at least one of the inner area and the outer area is selected. At least one management area, the management area including a defect management area including a defect list area in which a defect list entry of the recording medium is recorded and a terminator in which end information of the defect list area is recorded, and the defect management area. The size of the area provides a recording medium which is determined by the size of the defect list area.

The present invention also includes an embodiment in which the defect management area further includes a header area in which information on the number of defect list entries is recorded.

The present invention also includes an embodiment in which the size of the defect management area is determined in units of clusters of the recording medium.

The present invention also includes an embodiment in which the defect management area further includes a padding area which is located adjacent to the terminator and in which a specific value is recorded up to a cluster unit of the recording medium.

In addition, the present invention includes an embodiment in which the padding area has a size of less than one cluster.

The present invention also includes an embodiment in which the management area includes a plurality of defect management areas in which the same defect information is recorded.

In addition, the present invention further includes an embodiment in which the management area further includes a general management area in which information of the defect management area is recorded, and the general management area includes information in which size information of the defect management area is recorded.

In addition, the present invention includes an embodiment in which the general management area further records information on the number of defect management areas included in the management area.

In addition, the present invention includes an embodiment in which the recording medium can be recorded once.

The present invention also includes an embodiment in which the recording medium has three or more recording layers.

The present invention includes the steps of recording a defect list including a defect list entry of a recording medium in a defect management area of the recording medium; Recording a terminator, which is end information of the defect list, adjacent to the defect list; And recording a specific value up to a cluster unit of the recording medium, adjacent to the terminator, wherein the size of the defect management area is determined by the size of the defect list.

In addition, the present invention recording the specific value includes an embodiment of recording the specific value with a size less than one cluster.

The present invention also includes an embodiment further comprising the step of recording a header including the number information of the defect list entry.

The present invention also includes an embodiment further comprising the step of recording general management information including the size information of the defect management area in the management area of the recording medium.

In addition, the present invention includes an embodiment in which the general management information further includes information on the number of the defect management areas.

The present invention includes the steps of reading defect management information recorded in a management area of a recording medium, the defect management information including a defect list which is defect list entry information of the recording medium and a terminator which is end information of the defect list; And reproducing data of the recording medium according to the defect management information, wherein the size of the defect management information is determined by the size of the defect list.

In addition, the present invention includes an embodiment in which the defect management information has a size determined in units of a cluster of the recording medium.

The present invention also includes an embodiment in which the defect management information has a specific value adjacent to the terminator up to a cluster unit of the recording medium.

The present invention may further include reading general management information including size information of the defect management information, and reading the defect management information may include reading the defect management information according to the general management information. Include.

In addition, the present invention includes an embodiment in which the general management information further includes information on the number of defect management information recorded in the management area.

The present invention provides a pickup for recording data on a recording medium; And record defect list information including a defect list entry of the recording medium in a defect management area of the recording medium, record a terminator as end information of the defect list adjacent to the defect list, and continuously adjacent to the terminator. And a control unit for controlling the pickup to record a specific value up to a cluster unit of the recording medium, wherein the size of the defect management area is determined by the size of the defect list.

In addition, the present invention includes an embodiment in which the control unit records the specific value with a size less than 1 cluster adjacent to the terminator.

The present invention also includes an embodiment in which the controller further records a header including the number information of the defect list entry.

The present invention also includes an embodiment in which the control unit records general management information including size information of the defect management area in a management area of a recording medium.

In addition, the present invention includes an embodiment in which the general management information further includes information on the number of the defect management areas.

The present invention provides a pickup for reading data of a recording medium; Read defect management information recorded in a management area of the recording medium, the defect management information including a defect list which is defect list entry information of the recording medium and a terminator which is end information of the defect list, and data of the recording medium according to the defect management information; And a control unit for controlling the pickup to reproduce the information, wherein the size of the defect management information is determined by the size of the defect list.

In addition, the present invention includes an embodiment in which the defect management information has a size determined in units of a cluster of the recording medium.

The present invention also includes an embodiment in which the defect management information has a specific value adjacent to the terminator up to a cluster unit of the recording medium.

The present invention also includes an embodiment in which the control unit further reads general management information including size information of the defect management information, and reads the defect management information according to the general management information.

In addition, the present invention includes an embodiment in which the general management information further includes information on the number of the defect management information recorded in the management area.

The present invention is not limited to the above-described embodiment, and as can be seen in the appended claims, modifications can be made by those skilled in the art to which the present invention pertains, and such modifications are within the scope of the present invention. Reveal.

According to the recording medium, the data recording / reproducing method and the data recording / reproducing apparatus according to the present invention, the size of defect management information of the recording medium can be reduced. In addition, since the general management information and the defect management information can be located together in the recording layer, the time for reading the defect management information can be shortened. Thus, defects occurring in the recording medium can be more efficiently managed.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. In the following description, the same components are given the same names and the same reference numerals for the convenience of description.

The terminology used in the present invention was selected as a general term that is widely used at present, but in some cases, the term is arbitrarily selected by the applicant, and in this case, the meaning of the term is described in detail in the description of the present invention. The present invention should be understood as meanings other than terms.

In the present invention, the recording medium means any medium on which data is recorded or can be recorded. For example, a recording medium is meant to encompass all media regardless of a recording method such as a disk or a magnetic tape. Hereinafter, the present invention will be described by using a disc (Disc), particularly a Blu-ray Disc (BD), as a recording medium for convenience of description, but the technical spirit of the present invention is equally applicable to other recording media. It will be self explanatory.

In addition, the present invention will be described based on the recording medium of the type BD-R capable of recording once among the Blu-ray Disc BD, but it is obvious that the technical idea of the present invention can be applied to other types of recording media. .

In addition, the recording medium of the present invention is composed of certain units. For 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.

1 shows the structure of a recording medium 10 according to an embodiment of the present invention.

FIG. 1 illustrates a quadruple layer recording medium 10 composed of four layers L0, L1, L2, and L3. However, the present invention is not limited thereto, and the present invention is applicable to all recording media having a single layer and two or more layers. Since each layer may be configured in the same structure, it will be described in the present specification based on the first layer (L0).

The recording medium 10 of the present invention includes an inner zone 210, an outer zone 230, and a data zone 220.

The inner region 210 is located on the inner circumference side of the recording medium 10, and the outer region 230 is located on the outer circumference side of the recording medium 10 to store various kinds of information for controlling the recording medium 10. do. The inner area 210 and the outer area 230 include a temporary management area (TDMA) and a final management area (DMA).

The data area 220 stores data that a user wants to record. The portion surrounded by the inner region 210 and the outer region 230 on the recording medium 10 becomes a region where data is actually recorded. The data area 220 may include an inner spare area (ISA) 221, an outer spare area (OSA) 223, and a user data area 222.

In the temporary management area TDMA and the final management area DMA, general management information such as structure information of the recording medium 10, data recording method information, and defect management information such as a defect list may be recorded. General management information and defect management information will be described in detail with reference to FIG.

In addition, in the case of the recording medium 10 that can be written once, in the temporary management area TDMA, not only the defect management information that occurs during use of the recording medium 10 but also general management information indicating the recording state in the recording medium 10. Are mixed and recorded. Thereafter, when the recording medium 10 is closed, the corresponding recording medium 10 is no longer able to record data. Therefore, the latest management information in the temporary management area TDMA is transferred to the final management area DMA. It is transferred and recorded. Therefore, until the recording medium 10 is closed, management information is recorded in the temporary management area (TDMA). When the recording medium 10 is closed, the latest management information in the temporary management area (TDMA) is stored in the final management area (DMA). The recording medium 10 is reproduced beforehand and then recorded using the final management information in the final management area (DMA).

In addition, the recording medium 10 may include three temporary management areas (TDMAs) of TDMA0, TDMA4, and TDMA5 from the inner circumference side. Some of the temporary management areas TDMA0, TDMA4, and TDMA5 may be allocated with a fixed size, and the remaining areas may be flexibly allocated according to the degree of defects occurring in the recording medium 10. FIG. For example, the TDMA0 located at the innermost circumference of the recording medium 10 may be allocated to a certain size, and the remaining TDMA4 and TDMA5 may be allocated flexibly. That is, it may or may not be allocated as needed. Further, the TDMA4 and TDMA5 areas may be allocated in the spare areas ISA and OSA of the recording medium. In this case, TDMA4 and TDMA5 may not be allocated the smallest, and may be allocated as much as the entire size of each spare area 221, 223.

In addition, the use of the temporary management area (TDMA) shown in FIG. 1 may proceed in a certain order. For example, it may be used in the order of the TDMA0, TDMA4, TDMA5 areas from the inner peripheral area of the recording medium 10.

When the use of the temporary management area (TDMA) allocated in the recording medium 10 is completed or there is a command from the host 140, the recording medium 10 may be closed. When the recording medium 10 is closed, the latest temporary management information among the temporary management information recorded in the temporary management area TDMA is recorded in the final management area DMA.

The final management area DMA may be included in the inner area 210 and the outer area 230 of the recording medium 10. In addition, as shown in the embodiment shown in Figure 1, the final management area (DAM) may be composed of four DMA1, DMA2, DAM3, DMA4, it can be configured in the size of 32 clusters. However, the arrangement and number of the final management area (DMA) shown in FIG. 1 are merely embodiments, and various embodiments may be possible without departing from the spirit of the present invention.

Further, the information recorded in each final management area (DMA1, DMA2, DAM3, DMA4) can be configured with the same information. However, other information may be recorded with respect to the information related to the position of each final management area (DMA).

In the multi-layer recording medium 10, the same information may be recorded in the temporary management area (TDMA) or the final management area (DMA) of each layer, or user data may be recorded.

As described above, the defect management information of the recording medium 10 is recorded in the management areas (TDMA, DMA), and the defect management information may be composed of a defect list (DFL). 2 illustrates the structure of a defect list DFL according to an embodiment of the present invention.

The defect list DFL may be recorded in the temporary management area TDMA or the final management area DMA. The defect list recorded in the temporary management area TDMA may be referred to as a temporary defect list TDFL, and the defect list recorded in the final management area DAM may be referred to as a final defect list DFL. In the specification of the present invention, the description is based on the final defect list DFL, but it is also applicable to the temporary defect list TDFL.

A defect list header (DFL Header), a defect list entry (DFL Entry), and a defect list terminator (DFL Terminator) may be recorded in the final defect list DFL.

First, information about a defect list entry recorded adjacent to a defect list header is recorded in the defect list header. Examples of such information may include an identifier, defect list (DFL) update information, and the number of defect list entries. In one example, the defect list header may be configured in size of 64 bytes.

The defect list entry is recorded adjacent to the defect list header and contains information of defects occurring in the recording medium 10. In the defect list entry, address information, a defect type, and information of an area recorded in place of a defective area may be recorded in the recording medium 10. In addition, the address of the defective area or the replacement area may be configured as a physical sector address (PSN) of the cluster of the recording medium 10. For example, one defect list entry may consist of 8 bytes.

Since one defect list entry represents one defect information, the number of defect list entries recorded in the defect list DFL increases relatively as the area where a defect occurs in the recording medium 10 increases. If there are multiple defect list entries, the defect list entries can be written consecutively adjacent to the defect list header.

In the defect list terminator, when the recording of all the defect list entries is finished, information for informing that the recording of the defect list has ended can be recorded. In one example, the defect list terminator may be configured in size of 8 bytes.

As the number of layers increases in the multilayer recording medium 10, the data area 220 where defects may occur also increases. Therefore, the size of the final defect list DFL may be set according to the number of layers of the recording medium 10. For example, the single layer recording medium 10 may be composed of four clusters, and in the dual layer recording medium 10, eight clusters and a quadruple layer recording medium 10 may be used. In 16 clusters can be configured.

At this time, after the defect list terminator is recorded in the preset final defect list DFL, an arbitrary value may be continuously recorded in the area, that is, the remaining empty area. In the present specification, an example of continuously recording 00h values in the remaining area will be described.

In addition, the size of the final defect list DFL may be variably set according to the size of actual defect information of the recording medium 10.

3 illustrates a structure of a defect list DFL according to an embodiment of the present invention.

The 00h value continuously recorded adjacent to the defect list terminator is limited to less than one cluster. That is, the 00h value is recorded only up to the cluster in which the defect list terminator is recorded. Accordingly, the size of the defect list DFL is not determined by a constant value depending on the number of layers of the recording medium 10, but by the number of defect list entries of the recording medium 10 having a fixed size.

Therefore, the defect list DFL can reduce the size of the defect list DFL later by reducing the writing of meaningless values 00h into the defect list terminator. Therefore, the size of the defect list DFL is variably determined according to the number of defect list entries which are actual defect information.

4 illustrates a structure of a final management area (DMA) according to an embodiment of the present invention.

FIG. 4 shows the structure of the final management area (DMA) in the quadruple layer recording medium 10 composed of four layers L0, L1, L2, and L3. The area DMA may consist of 32 clusters. It will be described in detail below.

In the final management area (DMA) of the first layer (L0), a disc definition structure (DDS), which is general management information, and a sequential recording range information (SRRI) or a space bit map ( Space Bit Map (SBM) and a defect list (DFL) which is defect management information may be recorded.

As shown in the figure, for example, general management information can be configured to be recorded in the first eight clusters of the final management area (DMA).

The format or format of the recording medium 10 is recorded in the disc definition structure (DDS). For example, the size of the spare areas 221 and 223 of the recording medium 10, the continuous recording information (SRRI), or the space bit map (SBM). Information on the final defect list (DFL) may be included.

Information about the recording method of the recording medium 10 is recorded in the continuous recording information SRRI or the space bit map SBM. The recording medium 10 according to the present invention may be configured in a sequential recording mode (SRM) or a random recording mode (RRM).

The continuous recording mode (SRM) divides the recording area of the recording medium 10 into a plurality of sessions, and records data continuously in each session or in another session. In the continuous recording mode SRM, the use state of the recording area can be indicated by using the continuous recording information SRRI.

The random recording mode RRM enables recording when there is an unrecorded area in the recording area of the recording medium 10. In this case, 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.

In the final management area DMA of the remaining layers L1, L2, and L3, the final defect list DFL recorded in the first layer L0 may be rewritten. The above configuration can be configured in the case of ensuring the validity of the final defect list DFL or when a defect occurs in a region where the final defect list DFL is recorded in the first layer L0.

The final defect list (DFL) may be configured according to an embodiment of the present invention to have a size of one cluster. According to the final management area (DMA) structure shown in Fig. 4, the final defect list DFL having one cluster size is recorded in 17 clusters of the final management area DMA of the first layer L0, and then the remaining area. The final defect list DFL is configured to be rewritten or user data is recorded.

4 shows an example of rewriting the final defect list DFL twice, but this can be set to be flexible. The area after recording of the final defect list DFL can be utilized as an area for recording user data.

According to the structure of the final management area DMA, even when a defect occurs in the area where the final defect list DFL is recorded, the final defect list DFL can be rewritten in the first layer L0. That is, general management information and defect management information may be located together in the first layer L0. Therefore, when the recording medium 10 is mounted in the data recording / reproducing apparatus, it is possible to shorten the time for reading the management information of the recording medium 10.

In this regard, since the size of the final defect list DFL according to an embodiment of the present invention is variably determined according to the number of defect list entries, the size and size of the final defect list DFL are rewritten on the recording medium 10. It is necessary to record the information of the final defect list (DFL) such as the number of times. This will be described in detail later with reference to FIG. 5.

5 illustrates a temporary disk definition structure (TDDS) according to an embodiment of the present invention.

A Disc Definition Structure (DDS) may be recorded in the temporary management area TDMA or the final management area DMA. A disc definition structure (DDS) recorded in a temporary management area (TDMA) may be referred to as a temporary disc definition structure (TDDS), and the figure illustrates an embodiment of a temporary disc definition structure (TDDS). The same applies to the final disc definition structure (DDS) recorded in the final management area (DMA).

As shown in the figure, the temporary disk definition structure (TDDS) consists of information such as the temporary disk definition structure format (TDDS format), the size of the defect list (Size of Defect List), the number of defect list rewrite (Number of Optional Defect List), etc. Can be.

In the TDDS format, a 01h value may be recorded in order to distinguish the disc definition structure of the present invention from other disc definition structures.

Size information of the final defect list DFL may be recorded in the size of the defect list.

The number of times of rewriting the final defect list DFL in the final management area DMA may be recorded in the number of optional defect lists.

In addition, after the number of optional defect list rewrites (Number of Optional Defect List), a two-byte size is allocated, and a 00h value may be filled and recorded.

In addition, the temporary disk definition structure (TDDS) includes general management information such as a temporary disk definition structure identifier (TDDS identifier), a temporary disk definition structure update count (TDDS Update Count), and the first address of the final defect list (First PSN of Defect List). It may further include them.

Therefore, when reproducing the data of the recording medium 10, first, the defect list (DFL) size, defect list (DFL) position information, and defect list (DFL) in the final disc definition structure (DDS) in the final management area (DMA). Rewrite count information and the like are read. Then, the final defect list DFL is read using the information of the read defect list DFL.

6 is a block diagram of a data recording / reproducing apparatus according to an embodiment of the present invention.

Looking at the overall configuration of the data recording / reproducing apparatus of the present invention in detail, first, the pickup 70 is equipped with a laser diode therein to record data on the surface of the recording medium 10, or the recording medium 10 Read the signal reflected from).

 The servo 90 controls the tracking and focusing operation of the pickup 70 and the operation of the spindle motor 110.

 The R / F unit 80 generates a focus error signal and a tracking error signal, which are signals that detect out-of-focus and track-out of the laser beam by using the signal output from the pickup 70. .

The spindle motor 110 rotates a disc mounted in the data recording / reproducing apparatus.

The motor driver 100 drives the operation of the pickup 70 and the spindle motor 110 under the control of the servo 90.

The signal processor 40 restores the RF signal received from the R / F unit 80 to a desired reproduction signal value, or modulates and outputs a data signal to be recorded in a format recordable on the recording medium 10. .

The bit encoder 50 converts the write signal output from the signal processor 40 into a bit stream, and the pickup driver 60 transmits the bit stream generated by the bit encoder 50 to the recording medium 10. Convert to an optical signal to be stored.

The memory 150 temporarily stores information related to the recording medium 10 such as defect information of the recording medium 10 or performs a buffer function for temporarily storing data to be recorded or reproduced on the recording medium 10. do.

The controller 120 is configured to control the signal processor 40, the servo 90, and the memory 150 to control a drive including the components to perform data recording or reproducing operations.

The defect controller 130 generates a defect list DFL which is defect information of the recording medium 10, and controls the controller 120 to record the defect list DFL in the management area DMA of the recording medium 10. do. The defect controller 130 may configure the defect list DFL as a defect list header, a defect list entry, and a defect list terminator. The defect control unit 130 records information on a defect list entry recorded adjacent to the defect list header in the defect list header. Then, in the defect list entry, the recording medium 10 records the address information of the area where the defect has occurred, the type of the defect, and the information of the area recorded in place of the defective area. The defect list terminator also records information for informing that the recording of the defect list entry has ended.

The defect controller 130 may continuously record 00h values up to a cluster unit adjacent to the defect list terminator. That is, the 00h value continuously recorded adjacent to the defect list terminator can be limited to less than one cluster. Accordingly, the size of the defect list DFL is not determined by a constant value depending on the number of layers of the recording medium 10, but by the number of defect list entries of the recording medium 10 having a fixed size.

The defect control unit 130 generates a disc definition structure (DDS) including information such as a temporary disc definition structure format, a defect list size, a defect list rewrite count, and the like. The controller 120 is then controlled to record the disc definition structure DDS in the management area DMA of the recording medium 10.

In addition, the defect control unit 130 uses the defect management information of the recording medium 10 read out through the pickup 70 to replace the data of the cluster in which the defect occurred when reproducing the data of the recording medium 10 with new data. Perform the replacement function.

Although the defect controller 130 is illustrated as one component, the present invention is not limited thereto. The components of the defect controller 130 may be linked to each other to perform a function, and the defect controller 130 may be implemented in an integrated form with the controller 120 and / or the host 140. In addition, the defect controller 130 may be a signal processor 40, a bit encoder 50, a pickup driver 60, a pickup 70, a servo 90, a motor driver 100, a spindle motor 110, The controller 120 may be additionally connected to a drive including the memory 150 and may be updated.

The host 140 is in charge of controlling all components of the data recording / reproducing apparatus, and interfaces with a user to control recording or reproducing of the recording medium 10. Specifically, the host 140 transmits a command to the control unit 120 to cause the data recording / reproducing apparatus of the present invention to perform a specific function, and the control unit 120 interoperates with each other in the data recording / reproducing apparatus according to the command. To control the components configured to.

In this regard, the control unit 120 and the host 140 may be provided and operated separately, and the functions of the control unit 120, the defect control unit 130, and the host 140 may be integrated into one control unit. It is also possible to work.

The host 140 may be a main controller of a computer, a server, an audio device, or a video device. That is, the recording / reproducing apparatus of the present invention may be an optical drive provided to a personal computer (PC) or the like, or may be a player not mounted on a personal computer or the like.

Accordingly, the data recording / reproducing apparatus according to the present invention can be applied to both an optical drive and a player utilized as a single product mounted and operated inside a PC.

In addition, the AV encoder 20 converts an input signal into a signal of a specific format recordable on the recording medium 10 and transmits the data to the signal processor 40 in order to record data on the recording medium 10. For example, the AV encoder 20 may encode the input signal into an MPEG format signal. The signal processor 40 adds an error correction code (ECC) to the signal encoded by the AV encoder 20, converts the signal into a format recordable on the recording medium 10, and transmits the converted signal to the bit encoder 50.

In addition, the AV decoder 30 finally decodes the reproduction signal of the recording medium 10 received from the signal processing unit 40 and provides it to the user as output data such as a video and an audio signal. The AV decoder 30 may be configured of a plurality of decoders according to the type of data.

The components of the data recording / reproducing apparatus according to the present invention described above may be implemented as software or hardware to perform respective functions, or may be implemented by interworking with the software and hardware.

A data recording method according to an embodiment of the present invention can be configured as follows.

First, the controller 120 of the present invention controls the servo 90 so that the pickup 70 records the user data in the data area 220 of the recording medium 10.

In relation to recording the user data on the recording medium 10, if a defect occurs in an area in which the user data is recorded, the defect control unit 130 may determine a disc definition structure (DDS) and continuous recording information (SRRI) or a space bit. General management information of the map SBM and defect management information of the defect list DFL are generated or updated.

The defect list (DFL) can be composed of a defect list header, a defect list entry, and a defect list terminator. In the defect list header, information about a defect list entry recorded adjacent to the defect list header is recorded. In the defect list entry, the address information, the defect type, and the information of the region recorded in place of the defective region are recorded on the recording medium 10. Further, information for informing that the recording of the defect list entry has ended is recorded in the defect list terminator.

Then, a value of 00h can be continuously recorded up to the cluster unit adjacent to the defect list terminator. That is, the 00h value continuously recorded adjacent to the defect list terminator can be limited to less than one cluster. Accordingly, the size of the defect list DFL is not determined by a constant value depending on the number of layers of the recording medium 10, but by the number of defect list entries of the recording medium 10 having a fixed size.

The disc definition structure (DDS) may include information such as a disc definition structure format, a defect list size, a defect list rewrite count, and the like.

The defect controller 130 may record general management information and defect management information in a temporary management area (TDMA) in the recording medium 10 or store the information in the memory 150.

After recording of the user data, the data recording / reproducing apparatus of the present invention controls the control unit 120 to close the recording medium 10. In the closing of the recording medium 10, the defect controller 130 records general management information and defect management information recorded or stored in the temporary management area (TDMA) or the memory 150 in the final management area (DMA). The control unit 120 is controlled.

In addition, when the defect list DFL and the management area DMA are configured according to an embodiment of the present invention, the defect control unit 130 adds the defect list DFL to the disc definition structure DDS in the general management information. The controller 120 may be controlled to record the location information, the size information, the number of rewrites, and the like.

A data reproduction method according to an embodiment of the present invention can be configured as follows.

First, the controller 120 of the present invention controls the servo 90 so that the pickup 70 reads general management information and defect management information in the final management area DMA of the recording medium 10. The general management information and the defect management information are transmitted to the signal processing unit 130 and restored, and the restored management information is transmitted to the defect control unit 130.

Regarding reading management information, when the final defect list DFL and the final management area DMA are configured according to an embodiment of the present invention, the defect control unit 130 first reads general management information to read the final defect list. The control unit 120 controls to read the position information, the size information, the number of rewrites, and the like of the DFL. Then, the controller 120 is controlled to read the final defect list DFL in the final management area DMA by using the information of the read final defect list DFL.

The defect list DFL may be composed of a defect list header, a defect list entry, and a defect list terminator. In the defect list header, information about a defect list entry recorded adjacent to the defect list header is recorded. In the defect list entry, the address information, the defect type, and the information of the region recorded in place of the defective region are recorded on the recording medium 10. Further, information for informing that the recording of the defect list entry has ended is recorded in the defect list terminator.

Then, a value of 00h can be continuously recorded up to the cluster unit adjacent to the defect list terminator. That is, the 00h value continuously recorded adjacent to the defect list terminator can be limited to less than one cluster. Accordingly, the size of the defect list DFL is not determined by a constant value depending on the number of layers of the recording medium 10, but by the number of defect list entries of the recording medium 10 having a fixed size.

After reading the final defect list DFL which is the defect management information, the control unit 120 of the present invention controls the servo 90 so that the pickup 70 reads the user data. However, the defect controller 130 may determine that an area of the recording medium 10 to which data is read is a defective area by using the final defect list DFL. In this case, the defect controller 130 controls the controller 120 to read the data by using the information of the region recorded in place of the region where the defect has occurred. The read data is restored through the signal processor 130, the AV decoder 30, and the like, and is provided to the user.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings, and the present invention is also provided. Naturally, it belongs to the range of.

1 is a schematic diagram showing the structure of a recording medium according to an embodiment of the present invention.

2 is a schematic diagram showing the structure of a defect list DFL according to one embodiment of the present invention.

3 is a schematic diagram showing the structure of a defect list DFL according to an embodiment of the present invention.

4 is a schematic diagram showing a structure of a final management area (DMA) according to an embodiment of the present invention.

5 is a schematic diagram illustrating a temporary disk definition structure (TDDS) according to an embodiment of the present invention.

6 is a block diagram of a data recording / reproducing apparatus according to an embodiment of the present invention.

Claims (30)

A recording medium comprising a data area in which user data is recorded, and an inner area located on an inner circumferential side of the data area and an outer area located on an outer circumferential side, At least one of the inner region and the outer region includes at least one management region, The management area includes a defect management area including a defect list area in which a defect list entry of the recording medium is recorded and a terminator in which end information of the defect list area is recorded, The size of the defect management area is determined by the size of the defect list area. The method of claim 1, The defect management area is, And a header area in which information about the number of defect list entries is recorded. The method of claim 1, The size of the defect management area is The recording medium is determined in units of clusters of the recording medium. The method of claim 3, wherein The defect management area is, And a padding area positioned adjacent to the terminator, in which a specific value is recorded up to a cluster unit of the recording medium. The method of claim 4, wherein The padding area is, Recording medium having a size of less than 1 cluster. The method of claim 1, The management area, A recording medium comprising a plurality of defect management areas in which the same defect information is recorded. The method of claim 1, The management area further includes a general management area in which information of the defect management area is recorded. The general management area is a recording medium on which size information of the defect management area is recorded. The method of claim 7, wherein The general management area, And recording information of the number of the defect management areas included in the management area. The method of claim 1, The recording medium, Recordable media once. The method of claim 1, The recording medium, Recording medium having three or more recording layers. Recording a defect list including a defect list entry of a recording medium in a defect management area of the recording medium; Recording a terminator, which is end information of the defect list, adjacent to the defect list; And Adjacent to the terminator, recording a specific value up to a cluster unit of the recording medium; And a size of the defect management area is determined by the size of the defect list. The method of claim 11, The recording of the specific value may include: A data recording method of recording the specific value with a size less than 1 cluster. The method of claim 11, And recording a header including information on the number of defect list entries. The method of claim 11, And recording general management information including size information of the defect management area in a management area of a recording medium. The method of claim 14, The general management information, And a number information of said defect management area. Reading defect management information recorded in a management area of a recording medium, the defect management information including a defect list which is defect list entry information of the recording medium and a terminator which is end information of the defect list; And Reproducing data of the recording medium according to the defect management information; And the size of the defect management information is determined by the size of the defect list. The method of claim 16, The defect management information, And a size is determined in units of clusters of the recording medium. The method of claim 17, The defect management information, A data reproduction method adjacent to the terminator, having a specific value up to a cluster unit of the recording medium. The method of claim 16, And reading general management information including size information of the defect management information. Reading the defect management information, And a data reproduction method for reading the defect management information in accordance with the general management information. The method of claim 19, The general management information, And information about the number of defect management information recorded in the management area. A pickup for recording data on the recording medium; And Record defect list information including a defect list entry of the recording medium in a defect management area of the recording medium, record a terminator as end information of the defect list adjacent to the defect list, and successively adjacent to the terminator A control unit for controlling the pickup to record a specific value up to a cluster unit of the recording medium; The size of the defect management area is determined by the size of the defect list. Data recording device. The method of claim 21, The control unit, And a data recording device for recording the specific value with a size less than one cluster adjacent to the terminator. The method of claim 21, The control unit, And a header including a number information of the defect list entries. The method of claim 21, The control unit, And a general management information including size information of the defect management area in a management area of a recording medium. The method of claim 24, The general management information, And a number information of the defect management area. A pickup for reading data of the recording medium; Read defect management information recorded in a management area of the recording medium, the defect management information including a defect list which is defect list entry information of the recording medium and a terminator which is end information of the defect list, And a control unit controlling the pickup to reproduce data of the recording medium according to the defect management information. And a size of the defect management information is determined by the size of the defect list. The method of claim 26, The defect management information, And a size of which is determined in units of clusters of the recording medium. The method of claim 26, The defect management information, A data reproduction apparatus adjacent to the terminator, having a specific value up to a cluster unit of the recording medium. The method of claim 26, The control unit, Further reading general management information including the size information of the defect management information, And a data reproducing apparatus for reading the defect management information in accordance with the general management information. 30. The method of claim 29, The general management information, And the number information of the defect management information recorded in the management area.

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