RU2361289C2 - Write-once optical disc, method and device for recording/playing back management data onto/from said optical disc - Google Patents

Abstract

FIELD: physic; computer engineering.

SUBSTANCE: invention relates to optical writing technology and can be used for high density optical data carriers such as write-once Blu-ray discs (BD-WO). Proposed is a data carrier (write-once optical disc), as well as a method and a device for recording management data onto it. The optical disc has at least one recording layer and several time domains for defect management (TDMA) on at least the same recording layer. At least one TDMA comprises a pointer, which identifies which TDMA has a usable state.

EFFECT: reduction of access time when obtaining positions used for TDMA.

33 cl, 28 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a write-once optical disc, as well as an apparatus and method for recording / reproducing control information to / from an optical disc.

State of the art

Optical discs on which large data can be recorded are widely used as an optical information carrier. Among them, new high-density optical storage media (HD-DVD), such as a Blu-ray disc, have recently been developed for recording and storing high-definition video and high-quality audio data for a long period.

The Blu-ray Disc utilizes next-generation HD-DVD technology and is the next generation optical recording solution that has the great ability to store more data than existing DVDs. Recently, the technical specification of the international standard for HD-DVD has been adopted. Various standards are being prepared for Blu-ray discs. In particular, standards for Blu-ray disc write once (BD-WO) are offered.

1 schematically illustrates the structure of a recording area of a rewritable Blu-ray disc (BD-RE) according to the prior art. As shown in FIG. 1, a disk is divided into a start region, a data region, and an end region starting with its inner radius. Further, the data area is provided with an internal spare area (ISA) and an external spare area (OSA) located respectively on the internal and external radii to replace the defective areas, and a user data area provided between the spare areas for recording user data there. If a defective area is formed in the user data area while the data is being recorded onto a Blu-ray disc (BD-RE), the data is transferred from the defective area to the spare area to replace and write data to the backup area. This part of the spare area is known as the replacement area for replacing the defective area. In addition, location information related to the defective area, i.e. location information about the defective area and the corresponding replacement area, is recorded in the defect management areas (DMA1, DMA2, DMA3 and DMA4) that are provided in the start / end areas for performing defect management. BD-RE has a cluster as a minimum unit of record. One cluster contains a total of 32 sectors, and one sector contains 2048 bytes.

Since dubbing can be performed in any area of the BD-RE, the entire area of the disc can be used randomly, regardless of the particular recording method. Also, since defect management information can be recorded, deleted, and overwritten in defect management areas (DMAs), it does not matter that the size of the defect management area is small. In particular, BD-RE allocates and uses 32 clusters for each of the defect management (DMA) areas.

On the other hand, in a write-once disc, for example BD-WO, recording can only be done once in a specific area of the disc and, accordingly, the recording method is very limited. Essentially, defect management becomes one of the important issues when you need to write data to high-density write-once discs, such as BD-WO. Accordingly, a write-once disc requires a management area to record defect management and disc management information there. In this regard, a write-once optical disc requires a larger control area for recording information about defect management and disc usage status due to its exceptional “write once" feature.

However, a single standard that satisfies the above requirements is not available for a write-once disc, such as BD-WO. Moreover, any standard relating to known write-once optical discs cannot resolve the aforementioned disadvantages.

SUMMARY OF THE INVENTION

Thus, the present invention is directed to a write-once optical disc, as well as a device and method for recording / reproducing control information on / from the optical disc, which essentially eliminate one or more problems due to limitations and disadvantages of the prior art.

An object of the present invention is to provide a method for recording disc management information on a write-once optical disc, a method for initializing a disc, and a method for initially playing a disc.

Another objective of the present invention is to provide a method for separately recording and managing control information, thereby increasing the efficiency of using the plurality of temporary defect / disc management areas (TDMA) provided on a write-once optical disc.

Additional advantages, objects, and features of the invention will be set forth in part in the description that follows, and in part will become apparent to those skilled in the art after studying the following, or may be learned from the practical application of the invention. The objectives and other advantages of the invention can be realized and achieved by the construction shown in detail in the written description and claims of this invention, as well as in the accompanying drawings.

In order to achieve these goals and other advantages, and in accordance with the purpose of the present invention, as implemented and described generally herein, a recording medium having at least one recording layer is provided, the recording medium comprising a data area for recording user data; a start area and an end area, as well as a plurality of temporary defect management areas (TDMA), wherein at least one of said TDMA areas includes a pointer identifying a usage state of said TDMA areas.

In another aspect of the present invention, there is provided a write-once recording medium comprising at least one recording layer, a start area, a data area and an end area on said at least one recording layer, a separate pointer area in the start area, and a pointer stored in a separate area a pointer and identifying which of the temporary control areas on the write-once recording medium has a used state.

In another further aspect of the present invention, there is provided a method of recording control information on a recording medium, the recording medium including a plurality of temporary defect management areas (TDMA) on at least one recording layer, the method comprising writing a pointer to at least at least one of the mentioned areas of TDMA, and the indicator indicates which TDMA is used.

In yet another aspect of the present invention, there is provided a method for recording control information on a write-once recording medium, the write-once recording medium including a start area, a data area and an end area on at least one recording layer, the method comprising the steps of: a separate area of the pointer in the initial area of the write-once recording medium and write the pointer to a separate area of the pointer, the pointer identifying which of the time regions Tei management on the recording medium is a write-once used state.

In yet another aspect of the present invention, there is provided an apparatus for providing control information on a recording medium, the recording medium including a plurality of temporary defect management areas (TDMA) on at least one recording layer, the device comprising a recording / reproducing unit for recording a pointer in at least one of said TDMA areas, the indicator identifying which TDMA is used TDMA.

In yet another aspect of the present invention, there is provided an apparatus for providing control information on a write-once recording medium, the write-once recording medium including a start area, a data area and an end area on at least one recording layer, the device comprising a recording / reproducing unit to highlight a separate area of the pointer in the initial area of the write-once recording medium and to write the pointer to a separate area of the pointer, the pointer being identical itsiruet that of temporary management areas on the write-once recording medium is used state.

It should be understood that both the foregoing general description and the following detailed description of the present invention are illustrative and explanatory and are intended to provide further explanation of the claimed invention.

List of drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are combined and form part of this application, illustrate embodiment (s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

1 is a schematic diagram illustrating the structure of a BD-RE according to the prior art;

2A and 2B are views illustrating, respectively, the structure of a single-layer write-once optical disc and the structure of a double-layer write-once optical disc according to an embodiment of the present invention;

3 is a view illustrating an example of information recorded in a temporary disc / defect management (TDMA) area of a write-once optical disc according to an embodiment of the present invention;

4A is a view illustrating an example of a TDMA location indicator (TLI) of a single-layer write-once optical disc according to a first embodiment of the present invention;

4B-4E are views illustrating examples of a TDMA location indicator (TLI) of a dual-layer write-once optical disc according to a first embodiment of the present invention;

5A is a view illustrating an example TLI of a single-layer write-once optical disc according to a second embodiment of the present invention;

5B and 5C are views illustrating an example TLI of a dual-layer write-once optical disc according to a second embodiment of the present invention;

6A is a view illustrating an example TLI of a single-layer write-once optical disc according to a third embodiment of the present invention;

6B and 6C are views illustrating an example TLI of a dual-layer write-once optical disc according to a third embodiment of the present invention;

7, 8, and 9 are views illustrating examples of different TLI locations on a single-layer write-once optical disc and on a double-layer write-once optical disc according to an embodiment of the present invention;

10A and 10B are views illustrating information recorded in a TLI according to an embodiment of the present invention;

11A and 11B are views illustrating the structure of a single-layer write-once optical disc having an extended spare region and a TLI region according to an embodiment of the present invention;

12A, 12B, 13A, and 13B are views illustrating a structure of a dual-layer write-once optical disc having an expanded spare region and a TLI region according to an embodiment of the present invention;

14 is a view illustrating an initialization method according to a spare area allocation mode of the present invention; and

15 is a view illustrating a recording / reproducing apparatus for a write-once optical disc according to an embodiment of the present invention.

The optimal mode of carrying out the invention

Detailed reference will now be made to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numbers will be used throughout the drawings to refer to the same or similar elements. For convenience of description, a write-once optical disc is shown by the example of a Blu-ray disc write once (BD-WO).

FIG. 2A to 3 are views illustrating a structure of a write-once optical disc and a method of recording control information on a disc according to an embodiment of the present invention.

In particular, FIG. 2A illustrates a single-layer write-once optical disc (eg, a single-layer BD-WO) having one recording layer according to an embodiment of the present invention. As shown in FIG. 2A, a single layer optical disk includes a start region 30, a data region 40, and an end region 50 in the direction from the inner to the outer radius. The data area 40 includes internal and external spare areas (ISA0) and (OSA0), as well as a user data area 42. The start area 30 and the OSA0 external spare area include temporary disk / defect management areas (TDMA0) and (TDMA1), respectively.

In addition, a plurality of disc / defect management areas (DMA1 ~ DMA4) are provided in the start and end areas 30 and 40. While TDMAs store defect / disc management information temporarily, DMAs store defect / disc management information on a more permanent basis. For example, when a disk needs to be finalized (finalized), the control information stored in TDMA is transferred and stored in each of the DMAs.

Fig. 2B illustrates a dual-layer write-once optical disc (e.g., dual-layer BD-WO) having two recording layers, according to an embodiment of the present invention. As shown in FIG. 2B, a two-layer optical disc includes a first recording layer (Layer 0) and a second recording layer (Layer 1). Each of the recording layers includes control areas (Inner areas) and (Outer areas) in areas along the inner and outer radii of the disc. DMA 1-4 are provided in each of the recording layers.

The dual layer disc further includes a data area 45 in each of the recording layers, each data area having a user data area 47 for storing user data therein. Internal and external backup areas ISA0 and OSA0 are provided in the data area 45 of the first recording layer (Layer 0). Internal and external backup areas ISA1 and OSA1 are provided in the data area 45 of the second recording layer (Layer 1). The size of ISA0 is fixed, while the size of each of OSA0, OSA1, and ISA1 is variable. For example, the size of ISA1 can be (L · 256) clusters, and the size of OSA0 and OSA1 can be (N · 256) clusters, where N and L are positive integers.

As shown in FIG. 2B, TDMAs on a dual-layer write-once disc include TDMA0 and TDMA1, each of which has a constant size (e.g., 2048 clusters) in the Inner Region, and TDMA2, TDMA3, and TDMA4, which are provided respectively in the OSA0 spare areas , OSA1 and ISA1, which are of variable size. The sizes of the TDMA variables vary according to the sizes of the corresponding spare areas.

For a two-layer disc, TDMA0 and TDMA1 must necessarily be provided on the disc, while TDMA2, TDMA3, and TDMA4 can be selectively allocated with their various sizes equal to, for example, 1/4 the size of the corresponding spare area. That is, TDMA2 and TDMA3 can have corresponding sizes P = N · 256/4 clusters, and TDMA4 can have the corresponding size Q = L · 256/4 clusters, where N and L are positive integers. For a single layer disc, TDMA0 must necessarily be provided on the disc, while TDMA1 may be selectively provided.

According to an embodiment of the present invention, a single-layer write-once optical disc (e.g., a single-layer BD-WO) may have a maximum of two TDMAs. A dual-layer write-once optical disc (for example, a dual-layer BD-WO) can have a maximum of five TDMAs.

The structure and characteristics of the optical disc shown in FIGS. 2A and 2B are discussed below. For convenience of description, an example shows a two-layer optical disc write once.

First, a write once optical disc should include many areas for recording a variety of disc management information therein, due to its write once feature. As such, an optical disc according to the present invention includes a plurality of TDMAs in addition to a plurality of DMAs. According to the present invention, a plurality of TDMAs are used in a specific order / sequence of use. For example, TDMA can be used in order from TDMA0 to TDMA4 in a dual layer disc, or in order of TDMA0 and then TDMA1 in a single layer disc. For example, in the case of a two-layer disc, since user data is written to the disc, the corresponding information (for example, TDDS, TDFL, etc., as shown in FIG. 3, discussed later) is first written to empty TDMA0. When the TDMA0 is filled (i.e., completely consumed) with such information recorded therein, the empty TDMA1 is then used to write to it the corresponding information associated with the user data record. Once TDMA1 is completely used up, then TDMA2 is used further, etc. It is emphasized that TDMA can be used in any assigned order as necessary. Identification numbers (TDMA0 to TDMA4) are given by TDMA in a sequential order, depending on the order of use.

In addition, the write-once optical disc according to the present invention includes a separate area in which control information for managing multiple TDMAs is recorded. Such control information is referred to herein as a TDMA Location Indicator (TLI). A TLI may also be called a TAI (TDMA Access Index). The TLI indicates which TDMA among all the TDMAs to be used according to the assigned order is “used TDMA”. “Used TDMA” is a TDMA that is currently being used / accessed or which is currently available for use among all TDMAs having a designated use order. According to various embodiments, an indication of the TDMA used by the TLI may be implemented using the TDMA used indicator or the TDMA padding indicator, which will be discussed later in more detail.

TLI can significantly reduce the initial disk access time, since the TLI determines the TDMA used and, therefore, information about the last defect management and disk usage mode can be quickly obtained from the identified TDMA used. This is useful, especially when the disk is initially loaded. Without a TLI, it is necessary to scan all TDMAs to determine which TDMA is used by TDMA in order to obtain the necessary control information from that used TDMA.

According to the present invention, a TLI can be provided in various areas of the disc. In particular, a TLI can be provided anywhere in the control areas (start area, end area, etc.) of a disc that are accessible to the optical recording / reproducing apparatus in order to obtain a variety of disc information prior to actual reproduction. In the single layer disc of FIG. 2A, for example, a TLI may be provided in the start area 30. In the double layer disc of FIG. 2, a TLI can be provided in the start area on the first recording layer (Layer 0). Other examples of locations at which a TLI can be allocated will be discussed later.

FIG. 3 illustrates a variety of information about disk defect management and disk usage status, this information being recorded in the TDMA area. Whenever recording to a disc is performed, recording is usually performed through more than one cluster, usually the smallest unit of recording. Various disc management information recorded in TDMA (e.g., TDMA0, TDMA1, TDMA2, TDMA3 or TDMA4) are collectively referred to herein as TDMS information (temporary disc management structure). TDMS information may be changed or added depending on the standard.

As shown in FIG. 3, TDMS information includes, but is not limited to, a temporary defect list (TDFL) for recording disk defect management information, sequential recording range information (SRRI) used in sequential recording mode as presentation information disc usage status, a separation bitmap (SBM) used in a random recording mode, and disc description temporary structure (TDDS) information including the latest TDFL and SRRI (or SBM) location information. SRRI and SBM cannot be used at the same time, and either SSRI or SBM is written to disk depending on the recording mode.

For example, in the context of the disc structure shown in FIGS. 2A and 2B, each of the TDMA0 ~ TDMA4 includes one or more TDFL / SBM / SRRIs, each of which is recorded in the same cluster with TDDS during each recording / update, as shown figure 3. That is, each TDFL / SBM / SRRI record with TDDS is provided with one cluster. Typically, the last sector of each such cluster is intended to store TDDS information therein, as shown in FIG. However, the first sector, instead of the last sector of each such cluster, can also be used to store TDDS information.

The TDDS information includes general information about recording / reproducing a disc and is usually always checked when loading a disc into a recording / reproducing apparatus, since it includes reference information for indicating the latest TDFL and SRRI (or SBM) locations, as described above. According to the disk usage mode, the TDDS information is continuously updated, and the updated TDDS information is recorded in the TDMA during each update / recording. Therefore, the latest TDDS (for example, the latest TDDS 51 in FIG. 3) in the most recently used TDMA should be checked to access a variety of control information about the current disk usage status.

As described above, TDMA areas for recording TDMS information therein are used in a specific use order. For example, if all TDMA0 is used up when updating TDMS information as needed, the next TDMA according to the usage order, for example TDMA1, is then used to store updated TDMS information therein. The present invention provides a TLI (TDMA Control Information) that identifies which TDMA of all TDMAs having a specific usage order is used by TDMA, and this method according to various embodiments will now be described with reference to FIGS. 4A-6C. The structures and use of the TLI of FIGS. 4A-6C are applicable to the TLI and disk structures shown in FIGS. 2A and 2B and the subsequent FIGS. 7-11A and 12A, or to any other disk structure that requires a TLI.

4A to 4E illustrate a TLI structure according to a first embodiment of the present invention. This embodiment provides a TLI having one or more indications of a used TDMA. More specifically, FIG. 4A illustrates a TLI structure in a single-layer write-once optical disc having a single recording layer, and FIGS. 4B to 4E illustrate a TLI structure in a dual-layer write-once optical disc having two recording layers.

Referring to FIG. 4A, suppose that a single-layer write-once optical disc has two TDMAs (TDMA0 and TDMA1), for example, as shown in FIG. 2A, and TDMA0 and TDMA1 are used in that order. Then TLI 52 includes a pointer 53 used TDMA1 having the size of a single recording unit, for example, a single cluster 52a. TLI 52 manages two TDMAs with one cluster 52a. The used TDMA1 indicator 53 indicates directly whether the corresponding TDMA1 is the used TDMA. This indication is accomplished by providing a specific entry in one cluster 52a of the TLI 52. If the TLI cluster 52a has a specific entry in it, then it is considered that the TLI cluster 52a is in a “recorded state”. If the TLI cluster 52a does not have this specific entry in it, then the TLI cluster 52a is not in the recorded state. If the TLI cluster 52a (indicator 53 of the used TDMA1) is not in the recorded state, this means that the first TDMA0 used is the used TDMA. If the TLI cluster 52a is in the recorded state, this means that the used second TDMA1 is the used TDMA, which means that the used first TDMA0 is full, that is, completely used up, so there is no space for recording in TDMA0.

In other words, if the TDMA0 used by the first one becomes full, for example, during a disc user data recording operation, then TDMA1 according to the designated use order will be used to record data when the user data recording operation continues. At this stage, the designated specific data will be recorded in the TLI cluster 52a to set the TLI cluster 52a in a recorded state. The recorded state of the TLI cluster 52a indicates that TDMA1, and not TDMA0, is currently used by TDMA, that is, currently available for use during the user data recording operation. Accordingly, by checking the recorded / unrecorded state of the TLI cluster (s), the recording / reproducing apparatus can quickly determine which TDMA can and should be used at present during the disk data recording operation. This significantly reduces disk access time and provides an efficient and effective way to perform disk write operations.

According to embodiments of the present invention, if a single-layer write-once disc has more than two TDMAs, then the total number of TLI clusters present in the TLI varies according to the total number of TDMAs present on the disc. For example, if there is a TDMA of X on the disk, then there are (X-1) TLI clusters in the TLI. Each of the TLI clusters corresponds to one of the TDMAs, usually excluding the first TDMA, in the order of TDMA usage.

According to embodiments of the present invention, writing assigned specific data to the TLI cluster (s) to set the TLI cluster (s) in the recorded state can be implemented in various ways. For example, a high-frequency signal may be recorded in the TLI cluster (s), which is likely to facilitate checking whether the TLI cluster (s) are in a recorded state. In other examples, dummy data or some real data (non-dummy data) can be written to TLI clusters. An example of writing real data to the TLI cluster (s) will be described later with reference to FIGS. 10A and 10B.

The use and structure of a TLI for a dual layer write-once optical disc according to a first embodiment of the present invention is as follows. Referring to FIG. 4B, a dual-layer write-once optical disc can have up to five TDMAs (TDMA0 through TDMA4), and therefore, four clusters 55a-55d are allocated as TLI 55, with one TLI cluster corresponding to one of TDMA1-TDMA4. In this example, TDMAs are used sequentially from TDMA0 to TDMA4. From the first to the fourth TLI clusters 55a-55d, the TLIs correspond to TDMA1-TDMA4 in this order and, accordingly, represent TDMA1-TDMA4 usage pointers 56-59. Thus, these clusters 55a-55d, respectively, are written sequentially in the direction of the increasing address (for example, PSN). This is shown by an arrow (“recording direction”) in FIG. That is, if a particular TLI cluster is in a recorded state, this automatically means that any of its previous TLI clusters is already in a recorded state. For example, if the second TLI cluster is in the recorded state, this means that the first TLI cluster is already in the recorded state.

Accordingly, if all 4 TLI indicator clusters 55a-55d are not in a recorded state, this means that the first TDMA0 used is the used TDMA. If only the first TLI cluster 55a (indicator 56 of used TDMA1) is in a recorded state, this means that TDMA0 is full and TDMA1 is used TDMA. If the first and second TLI clusters 55b (used TDMA2 pointer 57) are in a recorded state, this means that TDMA0 and TDMA1 are full, and TDMA2 is used TDMA. If the third TLI cluster 55 (pointer 58 used by TDMA3) is in a recorded state, this means that TDMA0-TDMA2 are full and TDMA3 is used TDMA. If the fourth TLI cluster 55d (pointer 59 of the used TDMA4) is in the recorded state, this means that the TDMA0-TDMA3 are full and TDMA4 is the used TDMA.

As an example, as shown in FIG. 4C, if the first and second TLI clusters 55a and 55b are in a recorded state, this means that TDMA0 and TDMA1 are full and the TDMA used is TDMA2.

Accordingly, by checking the TLI and determining the TLI cluster (s) after the disc is loaded, the recording / reproducing apparatus can determine the location of the currently used TDMA (i.e., it can determine which TDMA is the used TDMA). Accordingly, the recording / reproducing apparatus can quickly move to the start position of the used TDMA to read the last recorded TDMS information, thereby initially obtaining a variety of initialization information for reproduction. If there is no TLI, as in the prior art, the recorder / player must scan all TDMAs starting with TDMA0 to determine which TDMA is currently available for use. And this creates the disadvantage that a long time is necessary for the initial playback.

Fig. 4D illustrates a TLI structure of a dual layer write-once optical disc in which the recording direction of the TLI clusters is reversed compared to the recording direction of the TLI clusters shown in Fig. 4B. Referring to FIG. 4D, in this example, TLI 55 is written sequentially from a cluster having a major physical sector number (PSN) to a lower PSN, that is, from a fourth to a first TLI cluster 55d-55a. The first to fourth TLI clusters 55a-55d now correspond to TDMA4 through TDMA1 in the indicated order and, accordingly, function as TDMA4-TDMA1 usage indicators 59-56. Here, TDMAs are used sequentially from TDMA1 to TDMA4.

Using the write direction of the TLI of FIG. 4D is an effective way to eliminate unwanted interaction with an area of optimal power calibration (OPC, not shown) located next to the corresponding CDMA if a TLI exists in the TDMA0 head portion, as shown in FIG. 7, which will be described later.

As an example of the use of the TLI of FIG. 4D, in FIG. 4E, if the fourth and third TLI clusters 55d and 55c are in a recorded state, this means that TDMA0 and TDMA1 are full and TDMA (usable) is TDMA2.

5A-5C illustrate a TLI structure according to a second embodiment of the present invention. In this embodiment, a TLI indicates which TDMA is a used TDMA by indicating which TDMA is full. More specifically, FIG. 5A illustrates a TLI structure of a single-layer write-once optical disc, and FIGS. 5B and 5C illustrate a TLI structure of a dual-layer write-once optical disc. In these examples, it is assumed that TDMAs are used sequentially from TDMA0 to TDMA1 (single layer disc) or to TDMA4 (dual layer disc), as discussed above.

As shown in FIG. 5A as an example of a single layer disc, a single cluster 62a is allocated to TLI 62. This cluster 62a functions as TDMA0 padding indicator 63. In other words, if the TDMA0 is full, the TLI cluster 62a (TDMA0 padding indicator 63) is indicated as being in a recorded state. This means that TDMA1 is used by TDMA and can be used. If the TLI cluster 62a is not in a recorded state, this means that TDMA0 is not yet fully consumed and available for use. That is, TDMA0 is a used TDMA and can be used.

As shown in FIG. 5B, in a first-to-fourth double-layer write-once disc, clusters 65a-65d are allocated to TLI 65 and recorded sequentially in that order in this example. The first to fourth clusters 65a-65d are TDMA0 through TDMA3, respectively, and function as TDMA0-TDMA3 fill indicators 66-69, respectively. Each TLI cluster indicates whether the corresponding TDMA is full.

Accordingly, for example, whenever TDMA0 through TDMA3 were full, all four TLI 65 indicator clusters 65a-65d would be in a recorded state, which means that TDMA4 is a used TDMA. If no TLI cluster is in a recorded state, this means that TDMA0 is a used TDMA. If only the first TLI cluster 65a is in a recorded state, this means that TDMA0 is full and the TDMA used is TDMA1. If only the first and second TLI clusters 65a and 65b are in a recorded state, as shown in FIG. 5C, this means that TDMA0 and TDMA1 are fully used and TDMA2 is now available for use.

6A to 6C illustrate a TLI structure according to a third embodiment of the present invention. In a third embodiment, the TLI indicates which TDMA is used by the TDMA by indicating which TDMA is full. The difference from the second embodiment is that the TLI includes an additional TLI cluster. In the example of FIGS. 6A-6C, it is assumed that TDMAs are used sequentially from TDMA0 to TDMA1 (single layer disc) or TDMA4 (double layer disc), as discussed above.

As shown in FIG. 6A for a single layer disc, two clusters 72a and 72b are allocated for TLI 72. The first and second clusters 72a and 72b of the TLI pointer function respectively as TDMA0 padding indicator 73 and TDMA1 padding indicator 74. Accordingly, if only the TDMA0 is full, the first TLI cluster 72a (TDMA0 fill indicator 73) is the only one that is in the recorded state. This means that TDMA1 is used by TDMA and can be used. If the first TLI cluster 72a is not in a recorded state, this means that TDMA0 is not yet full and available for use. That is, TDMA0 is a used TDMA and can be used. If the first and second TLI indicator clusters 72a and 72b are both in a recorded state, then TDMA0 and TDMA1 are all full, which means that there is no TDMA available for recording control information. In this case, the disk should be closed / completed.

As shown in FIG. 6B, in a first to fifth dual write-once disc, the clusters 75a-75e are allocated to the TLI 75 and are recorded sequentially in that order in this example. The first to fifth clusters 75a-75e are for TDMA0 to TDMA4, respectively, and function as TDMA0-TDMA4 fill pointers 76-80, respectively. Each TLI cluster indicates whether the corresponding TDMA is full.

Accordingly, for example, if no TLI cluster is in a recorded state, this means that TDMA0 is a used TDMA. If only the first TLI cluster 75a is in the recorded state, this means that the TDMA0 is full and the TDMA used is TDMA1. If only the first and second TLI clusters 75a and 75b are in a recorded state, this means that TDMA0 and TDMA1 are fully used and TDMA2 is now available for use. If all five TLI clusters 75a-75e are in a recorded state, as shown in FIG. 6C, this means that the TDMA0 through TDMA4 regions are completely exhausted and there is no usable TDMA. In this case, since the corresponding disk does not have an area for recording TDMS information therein, the disk ends / closes.

5A to 6C illustrate a TLI used in an order starting from a TLI cluster having a minor PSN to a TLI cluster having a senior PSN. However, the direction of the TLI entry in FIGS. 5A-6C can be changed so that TLI clusters are used sequentially in decreasing order of address, as shown in FIGS. 4D and 4E.

As previously discussed, TLIs (for example, as shown in FIGS. 4A-6C) may be located in the initial region of a single-layer or double-layer disk, as shown in FIGS. 2A and 2B. 7 to 9 now illustrate various locations at which control information (TLI) can be recorded on a disc according to an embodiment of the present invention. As shown in FIGS. 2A, 2B, and 7-9, any location of the TLI on a disc is acceptable if it is located within an area that the recorder / player can initially recognize as a control area. In this regard, the data area of the disc may be excluded.

For example, as shown in FIG. 7, a TLI is provided at the head of the TDMA0 on a single-layer (Layer 0) write-once optical disc or on a two-layer (Layer 0 and 1) write-once optical disc, for example, a single-layer or double-layer BD-WO. Alternatively, as shown in FIG. 8, a TLI may be provided in the end portion of the TDMA0 single-layer / double-layer write-once disc. As another alternative, as shown in FIG. 9, a TLI may be provided in one, some, or each of the DMA single-layer / double-layer write-once discs.

10A and 10B illustrate two examples of different contents of a TLI according to an embodiment of the present invention. Since FIGS. 10A and 10B show one TLI cluster, each TLI cluster may have the same content structure. In particular, FIGS. 10A and 10B are examples of writing some real data to a TLI cluster (s) in order to selectively set the TLI cluster (s) to a recorded state. Some or all of such real data recorded in the TLI can be directly used to indicate whether the TLI cluster (s) are in the recorded state in order to determine which TDMA is being used, as discussed above. The use of such real data has the advantage that TLI can provide additional relevant information in addition to indicating the current TDMA being used. It should be noted, however, that dummy data or any other designated signals can be written to the TLI cluster (s) to indicate the recorded / unrecorded state of the TLI cluster (s). The TLI content structures of FIGS. 10A and 10B are applicable to the TLI and disk structures shown in FIGS. 2A-9 and 11A-13B.

According to one example, as shown in FIG. 10A, a TLI cluster that corresponds to a particular TDMA, as discussed above, includes the latest TDDS information associated with a TDMA corresponding to a TLI cluster, in addition to information indicating whether the corresponding TDMA used by TDMA. The features of FIG. 10A are very useful in the second embodiment (FIG. 5A to 5C) and the third embodiment (FIG. 6A to 6C). For example, in the case where the last TDDS is recorded in the last cluster of each TDMA, the TDMA including the latest TDDS and the TDMA used may be different from each other, which, in turn, may cause disk access errors. By providing additional information to the TLI, as in FIG. 10A, such an error can be prevented.

A detailed description of this situation is as follows, with reference to FIG. 10A. First, suppose that a TLI is recorded in cluster blocks, with the cluster being the smallest unit of record. In a first sector (Sector 0) of a TLI cluster having 32 sectors, an identification field 82 (“TLI Identifier”) is present to enable recognition of TLI information, a TLI format information field (“TLI Format”) associated with a version of the present disc, and TLI update count field (“TLI Update Counter”) to increase the count value by 1 whenever a TLI is updated. Update count field 84 can also be used even as information to indicate how many clusters can be present in the TLI. Moreover, there is field 85 is located TDDS (“Last TDDS Location”) to provide TDMA information in which the latest TDDS information is located.

The remaining area 86 of the first sector (Sector 0) of the TLI cluster is used to indicate the recorded or unrecorded state of the TLI cluster by using a predetermined value (for example, setting the field to “00h”). For example, if the remaining area 86 of Sector 0 of the TLI cluster has a specific designated record, then it can be considered that the TLI cluster is in a recorded state to indicate the usage status of the corresponding TDMA, as discussed above, with reference to FIGS. 4A-6C.

The TDDS location field 85 in the first sector (Sector 0) of the TLI cluster sets the TDMA into which the latest TDDS information is recorded, regardless of whether that TDMA is completely consumed. For example, the values of this field 85 can be set so that “0000 0000b” means that the latest TDDS exists in TDMA0, “0000 0001b” means that the latest TDDS exists in TDMA1, “0000 0011b” means that the latest TDDS exists in TDMA3, and “0000 0100b” means that the most recent TDDS exists in TDMA4. Other examples are possible. Accordingly, as an example, if the first cluster in the TLI is the only one in the recorded state (for example, region 86 of the first TLI cluster 65a in FIG. 5B is in the recorded state) and the TDDS location field 84 (i.e., the first TLI cluster 65a in FIG. 5B ) is set to “0000 0000b”, which means that the TDMA used is TDMA1, but the last updated TDDS (the latest TDDS information) is located in the TDMA0 of the disc.

In addition, the latest TDDS information is recorded in the TDDS information field (“Latest TDDS”) of the second sector (Sector 1 of the TLI cluster). As a result, TLI can be applied directly even to recover the latest TDDS information. This is useful because even if the latest TDDS information recorded in the latest TDMA as part of the TDMS information is corrupted, important TDDS information will not be lost since it can be recovered from the TLI recorded in TDMA0. Some or all of the remaining sectors (88) of the TLI cluster may have a copy of the latest TDDS information stored in the TDDS information field 87. Each TDDS information is recorded in the size of one sector. So, for example, if 3 sectors of a TLI cluster are each recorded with the same latest TDDS information, this means that the latest TDDS information is stored three times in the TLI. The latest TDDS information stored in the TLI cluster field 87 may be the latest TDDS information or the first TDDS information. For example, if a TLI cluster uses a used TDMA pointer instead of a TDMA pad, and a TLI corresponding to a TLI cluster becomes a used TDMA, then an entry is made in field 86 to indicate that the corresponding TDMA is currently in use. At this time, the first TDDS information recorded in the corresponding TDMA is copied and recorded in the TLDS cluster TDDS information field 87 as the latest TDDS information. The first TDDS information is recorded in field 87 because the corresponding TDMA is still in use and not full at this time.

On the other hand, if the TLI cluster uses the TDMA padding indicator instead of the TDMA used indicator, and the TDMA region corresponding to the TLI cluster becomes full, an entry is made in field 86 to indicate that the corresponding TDMA is full. At this time, the last TDDS information (in the last sector) recorded in the corresponding TDMA is copied and recorded in the TLDS cluster TDDS information field 87 as the latest TDDS information. The latest TDDS information of the corresponding TDMA is recorded in field 87 because the corresponding TDMA is full and no additional TDDS information can be recorded in the corresponding TDMA.

Thus, according to the point in time when the TLI is updated, the latest TDDS information recorded in the TLI may be the last TDDS recorded in the corresponding TDMA (for example, when the corresponding TDMA is full), or it may be the first TDDS recorded in the used TDMA (then there when appropriate TDMA is currently available for use).

As another example, the latest TDDS information can be copied up to 32 times in a TLI cluster. Any remaining sector in the TLI cluster can be set to a specific value, for example 00h, if not in use. Since each recording of TDDS information is allocated the size of one sector, this means that the TLI cluster as a whole can be recorded with the same latest TDDS information up to 32 times, as shown in Figure 10 B. Again, depending on the type of pointer (use or fill ) used in the TLI cluster, the latest TDDS information may be the first or last TDDS information recorded in the corresponding TDMA, as discussed above. In the example of FIG. 10B, a record of the latest TDDS information is used directly as a pointer to the used / populated TDMA TLI cluster. This is an example of using recording real data (such as TDDS information) in a TLI cluster to selectively indicate whether a TLI cluster is in a recorded state. Thus, the TLI cluster not only indicates which TDMA is the used TDMA, but also provides the latest TDDS information associated with the corresponding TDMA.

The TLI content structure shown in FIG. 10B is applicable in the first embodiment (FIGS. 4A through 4E). For example, if the TDMA used is TDMA1, the corresponding TLI cluster is set to a recorded state. At this time, the first TDDS information recorded in the corresponding TDMA1 is recorded in that TLI cluster.

11A to 13B illustrate a disk structure and a TLI structure according to another embodiment of the present invention. In this embodiment, when the spare area (SA) is allocated in the extended SA mode, not only the location of the used TDMA is indicated, but also the used slot / area among the TDMA regions / slots existing in the extended backup area is indicated. In particular, FIGS. 11A and 11B illustrate the structure and use of TLIs in a single-layer write-once optical disc, and FIGS. 12A-13B illustrate the structure and use of TLIs in a dual-layer write-once optical disc. In these examples, usage pointers are used in the TLI instead of padding pointers.

More specifically, FIG. 11A illustrates the structure of a single-layer write-once optical disc having an extended spare area (SA) and TDMA0 and TDMA1 used in that order. An expanded SA or backup area expansion means that a backup area (eg, OSA0) existing after the end of the user data area is allocated with a size that is within 50% of the maximum recordable capacity of the disc, considering future use when the disc is initialized. As the external spare area (OSA0) expands, the TDMA1 existing in the internal spare area (OSA0) expands at the same time.

In the case where TDMA1 is expanded by a specific amount, the corresponding areas of TDMA1 can expand accordingly. The extended TDMA1 regions are indicated respectively as “M1”, “M2” and “M3” in FIGS. 11A and 11B. In this case, the TLI is divided into a fraction of 90 (“TLI1”) to indicate which TDMA is used by TDMA, and a fraction of 91 (“TLI2”) to indicate a specific interval in the extended TDMA1. TLI1 has a size of one cluster, while TLI2 has a size of two clusters.

If TDMA1 is significantly larger than TDMA0, for example, because of the SA extension, and if TLI 90 (without share 91) is placed alone as a TLI, then it may be necessary to scan TDMA1 from the beginning to find the last recorded location in TDMA1 due to its large size when TDMA becomes used by TDMA. This, however, may cause the disadvantage that a large access time is required. Therefore, the present invention according to this embodiment splits the extended TDMA1 into a plurality of slots (regions), and when the corresponding slot / region of the TDMA1 is fully used, this state is indicated in the TLI by a fraction of 91. This can significantly reduce disk access time.

For example, in FIG. 11A, suppose that the extended TDMA1 is divided into 3 slots / regions of the same size (M1, M2, and M3). The two clusters 91a and 91b are then allocated to write TLI2 (91), as shown in FIG. 11B as an example. The two TLI2 indicator clusters 91a and 91b (91) relate respectively to M3 and M2 of the TDMA1 region and indicate whether the corresponding region (M3 or M2) is currently in use. The path that the clusters 91a and 91b are used to indicate the availability of different TDMA regions / intervals may be the same as the different paths of indicating the usage status of each TDMA, as discussed above in connection with FIGS. 4A-6C and 10A-10B. For example, if TLI1 (90) indicates that TDMA1 is a used TDMA, a pointer (91b) of a used M2-TDMA1 indicates whether M2 of a TDMA1 area is a currently used TDMA area; and the indicator (91a) of the used M3-TDMA1 indicates whether the M3 of the TDMA1 region is the currently used TDMA region outside of TDMA1. As an example, if TLI1 (90) and both clusters (91a and 91b) of TLI2 (91) are determined to be in a recorded state, this means that M3 of TDMA1 is currently used by TDMA1.

If the extended TDMA1 is divided into m intervals / regions of the same size (M1, M2, ... Mm), (m-1) clusters are allocated for writing TLI2 (91). Although TLI2 is used to indicate the utilization status of the TDMA1 regions using the example of FIG. 11B, TLI2 can be used to indicate the utilization status of the domains of any TDMA that is extended in accordance with the extension of the corresponding SA.

11A and 11B, the location at which the TLI is written to the disk will be located within a specific control area, for example, as shown in any of FIGS. 7 through 9. However, for convenience of description, TLI (= TLI1 + TLI2) is shown on figa placed in the final part of the TDMA0, for example. For convenience of description, the TLI structure illustrates in FIG. 11B the case where the TDMA used is indicated as shown in the first embodiment (FIGS. 4A to 4E).

12A illustrates the structure of a dual-layer write-once optical disc having enhanced SA and TDMA0-TDMA4. In the dual-layer optical disc, the spare area located beyond the end of the user data area is the internal spare area (ISA1) on the second recording layer (Layer 1). Therefore, the spare area (ISA1) can be expanded to have a size that is within 50% of the maximum recordable capacity of the disc. As the spare area (ISA1) expands, the TDMA4 existing in the spare area (ISA1) also expands at the same time. It is also possible to expand any other changeable spare area on the disk also with extended TDMA in it.

As shown in FIG. 12A, in the case where the TDMA4 is expanded to a certain size, the TDMA4 is divided into a certain number of slots / areas of the same size. These intervals / areas are called N1, N2, ... N5, respectively. Accordingly, TDMA0 includes a TLI, as shown in FIG. 12B. The TLI includes TLI1 (93) to indicate which TDMA is used by TDMA through the use of four clusters 93a-93d, and TLI2 (94) to indicate a specific usage state of the extended TDMA4 slots / regions by using four clusters 94a-94d. If the extended TDMA4 is divided into n intervals / regions of the same size (N1, N2, ... Nn), as described in FIGS. 12A and 12B, (n-1) clusters are allocated for recording TLI2 (94).

The first through fourth clusters 93a-93d of the TLI pointer (93) relate to TDMA4-TDMA1, respectively, and function respectively as indicators of the TDMA4-TDMA1 used. The first through fourth clusters 94a-94d of the TLI2 indicator (94) relate respectively to the N5-N2 of the TDMA1 region and indicate whether the corresponding region (N5, N4, N3 or N2) is currently in use. The way in which these TLI clusters 93 and 94 are used to indicate the availability of different TDMAs and TDMA areas / intervals may be the same as the different means of indicating the usage status of each TDMA, as discussed above in connection with FIGS. 4A-6C and 10A -10V.

12A and 12B, the location at which the TLI is written to the disc will be located within a specific control area, for example, as shown in any of FIGS. 7 through 9. However, for convenience of description, TLI (= TLI1 + TLI2) is shown on figa located in the final part of the TDMA0, for example. For convenience of description, the TLI structure illustrates in FIG. 12B the case where the TDMA used is indicated as shown in the first embodiment (FIGS. 4A through 4E).

Since TLI2 (94) is used to indicate the utilization status of the TDMA4 regions using the example of FIG. 12B, TLI2 can be used to indicate the utilization status of the domains of any TDMA that is extended in accordance with the extension of the corresponding SA.

FIGS. 13A and 13B illustrate an example of how TLIs in FIGS. 12A and 12B can be used.

As shown in FIG. 13A, suppose that the TDMA0, TDMA1, TDMA2, and TDMA3 of a disc are currently fully used up and that from a certain interval / region of the last TDMA4, the interval N3, for example, is currently used.

As shown in FIG. 13B, since TDMA0, TDMA1, TDMA2, and TDMA3 are full, and the last TDMA4 is currently used (i.e., TDMA4 is used by TDMA), four TLI2 (93) pointer clusters 93a-93d are recorded (e.g., with real or dummy data) to be in a recorded state. Moreover, since the slots / areas N1 and N2 of the TDMA4 area are full, the third and fourth clusters 94 c and 94d of the TLI2 indicator (94) are set to a recorded state to indicate that N3 of the TDMA4 area is currently being used.

Fig. 14 illustrates a disk initialization method according to an embodiment of the present invention. This method can be implemented in any disk structure and TLI structure discussed in this document.

Referring to FIG. 14, when a disk is initialized (S119), the user or system determines the mode of spare areas of the disk (S120). This can be done using any existing method, for example, based on user input or signal / data mode recorded to disk. If the spare area is in "normal" mode, the TLI is allocated on the disk with a unit size smaller (x-1) than the number (x) of TDMA allocated on the disk (figa-5C), or TLI is located on the disk in that the same amount (x) as the number (x) of TDMA allotments (FIGS. 6A-6C) (S121).

If it is determined in step S120 that the spare area is in the “extended” mode, the size of the TDMA existing within the expanded spare area is expanded and the expanded spare area is divided into a certain number (y) of slots / areas of the same size. TLI2 is allocated on the disk in an amount less by one (y-1) than the determined divided number (y) (S122). In this case, in a similar way, TLI1 is placed on the disk in an amount less by one (x-1) than the total number (x) of TDMAs placed on the disk (S122). In this regard, steps S122 and S123 may be carried out in accordance with the TLI structure discussed in connection with FIGS. 11A-13B.

The method of FIG. 14 and any other method described herein, according to embodiments of the present invention, can be implemented in any disk / TLI structure discussed herein.

15 illustrates a recording / reproducing apparatus according to an embodiment of the present invention. The methods of the present invention can be implemented using the device of FIG. 15 or other suitable device / system. The recording / reproducing apparatus includes a recording / reproducing module 10 for performing reproduction and / or recording from / to the optical disc and a control module (or main device) 20 for controlling the recording / reproducing module 10. The control unit 20 sends to the recording / reproducing unit 10 a recording command or a playback command for a specific area on the disc. The recording / reproducing unit 10 performs recording / reproduction in this particular area in accordance with the command of the control unit 20. The recording / reproducing module 10 may use an optical drive.

The recording / reproducing module 10 may include an interface module 12 for exchanging information with an external device, for example, a control module 20; head module 11 for directly recording or reproducing data to / from an optical disc; a data processing processor 13 for receiving a playback signal from the head module 11 to convert the received signal to appropriate signal values or to modulate the signal to be recorded into a corresponding recording signal for the optical disk; a servo module 14 for controlling the head module 11 for accurately reading signals from an optical disk or for accurately recording signals to an optical disk; a memory 15 for temporarily storing a variety of information, including control information and data; and a microprocessor 16 for controlling operations and structural elements within the module 10.

An example of a description of a disc reproduction method using the TLI of the invention in the device of FIG. 15 is as follows.

Industrial applicability

If a disc is loaded, the recording / reproducing apparatus 10 obtains a variety of recorded disc information from the loaded disc. Specifically, if the loaded disc is a write-once optical disc, for example, BD-WO, as discussed herein, the microprocessor 16 checks the recorded / unrecorded state of the TLI cluster (s) in the indicated location (e.g., from the TDMA0 head portion) in the control area, to get the last recorded location in the used TDMA.

Accordingly, after the location of the used TDMA is obtained by accessing the TLI, the used TDMA is scanned first to obtain the last recorded TDMS information, or the TDDS information can be obtained from the TLI. A portion of the obtained TDMS information is transmitted to the control unit 20, and the control unit 20 uses the transmitted TDMS information to re-transmit the playback command to the recording / reproducing unit 10, thereby performing playback using the recording / reproducing unit 10.

An example of a method for recording a patentable TLI using the device of FIG. 15 is described as follows.

The microprocessor 16 writes TDMS information to a plurality of TDMAs that are determined and used in a specific use order. For example, TDMA0 begins to be used first. If TDMA0 is fully used up, a specific TLI cluster is recorded to be in a recorded state, as discussed above, whereby TDMA1 is indicated as being used by TDMA.

When the disk is in the idle or ejected state after the entire disk recording is completed, the location of the used TDMA is checked so that the above operation can change a particular cluster in the corresponding TLI to the packet recording state.

As discussed above, the present invention has the advantage that, in a write-once optical disc, the access time for obtaining the location of the used TDMA is significantly reduced, thereby greatly improving the efficiency of using the write-once optical disc using TDMA. Moreover, other information, for example, the latest TDDS information, can be recorded in a TLI, which can be accessed and used as necessary, especially if the TDDS information stored in TDMA is corrupted.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention. Thus, it is understood that the present invention extends to modifications and variations of this invention if they are presented within the scope of the attached claims and their equivalents.

Claims (33)

1. The recording medium containing
one or more temporary disk / defect management areas allocated on the recording medium and used in the prescribed manner, and in these temporary disk / defect management areas, control information is stored until the recording medium is finalized, and in said temporary disk management areas / defects store temporary defect list information and reference information indicating the last location of this temporary defect list information, and
one or more access indicators located in one of said temporary disk / defect management areas to indicate which temporary disk / defect management area is currently available for use when the corresponding temporary disk / defect management area is used. 2. The recording medium according to claim 1, wherein said access indicators are located in a head portion of said one of said temporary disk / defect management areas. 3. The recording medium according to claim 1, wherein said one of said temporary disk / defect management areas is a temporary disk / defect management area that is used first. 4. The recording medium according to claim 1, in which the total number of access indicators depends on the total number of temporary areas of disk / defect management. 5. The recording medium according to claim 1, wherein each of said access indicators corresponds to each of said temporary disk / defect management areas, with the exception of the temporary disk / defect management area, which is used first. 6. The recording medium according to claim 1, in which the aforementioned access indicators are used sequentially in the direction corresponding to the descending order. 7. The recording medium according to any one of claims 1 to 6, in which each of the mentioned access pointers consists of one cluster. 8. The recording medium according to any one of claims 1 to 6, in which, when the temporary disk / defect management area becomes available for use at the moment, an access indicator that corresponds to the temporary disk / defect management area that is currently available for use, has recorded data. 9. The recording medium according to any one of claims 1 to 6, in which, when the aforementioned corresponding temporary disk / defect management area becomes available for use at the moment, the access indicator of this corresponding temporary disk / defect management area stores information of a temporary structure a disc description that includes the referenced information and which is recorded first in this corresponding disc / defect management area. 10. The recording medium according to any one of claims 1 to 6, in which, when the aforementioned corresponding temporary disk / defect management area becomes available for current use, the access indicator of this corresponding temporary disk / defect management area stores information of a temporary structure a disc description, which includes the referenced information and which is recorded first in this corresponding area of the disc / defect management, this information being the temporary structure of the disc description It has been stored 32 times in each of the access pointers mentioned. 11. A method of recording control information on a recording medium including one or more temporary disk / defect management areas allocated to store control information therein until the recording medium is finalized, the method comprising the steps of
recording information on the temporary defect list and reference information indicating the last location of this information on the temporary defect list in the temporary disk / defect management area, which is currently available for use among the mentioned temporary disk / defect management areas used in the assigned order,
creating one or more access indicators in one of said temporary disk / defect management areas to indicate which temporary disk / defect management area is currently available for use when the corresponding temporary disk / defect management area is used. 12. The method according to claim 11, in which, at the stage of creation, said access indicator is created in the head part of said one of the said temporary disk / defect management areas. 13. The method according to claim 11, in which each of said access indicators corresponds to each of said temporary disk / defect management areas, with the exception of the temporary disk / defect management area used first. 14. The method according to any one of paragraphs.11-13, in which each of the mentioned access pointers consists of one cluster. 15. The method according to any one of paragraphs.11-13, in which, at the stage of creation, data is written into the access indicator that corresponds to the corresponding temporary temporary disk / defect management area when this corresponding temporary disk / defect management area becomes available for use in the current moment. 16. A device for recording control information on a recording medium including one or more temporary disk / defect management areas allocated to store control information therein until the recording medium is finalized, the device comprising
a head configured to directly record / reproduce data regarding the recording medium,
a processor for processing data configured to convert the signal from the head to an appropriate signal value or to modulate the signal to be recorded,
a servo module configured to control the head for accurately reading / writing signals in relation to the recording medium,
a memory configured to temporarily store information associated with the recording medium,
an interface configured to communicate with an external device, and
a microcomputer configured to control operations performed by the head, data processor, servo module, memory and interface, while the device is configured to record temporary defect list information and reference information indicating the last location of this temporary defect list information in the temporary disk / defect management area , which is currently available for use among the mentioned temporary disk / defect management areas used for nnom order, and create one or more indicators of access to one of said temporary disc / defect management to indicate what kind of temporary disc management / defects is available for use at the moment, when a corresponding temporary defect management area. 17. The device according to clause 16, which creates the aforementioned access indicators in the head part of the aforementioned one of the aforementioned temporary areas of disk / defect management. 18. The device according to clause 16, in which said one of the aforementioned temporary areas of management of the disk / defects in which are created access indicators, is a temporary area of management of the disk / defects used first. 19. The device according to clause 16, which creates access indicators corresponding to the temporary areas of disk / defect management, respectively, with the exception of the temporary area of disk / defect management used first. 20. The device according to clause 16, which uses the access indicators sequentially in the direction corresponding to the descending order. 21. The device according to clause 16, further comprising a host device configured to send a write command for a specific area of the recording medium via an interface, the device configured to perform a write operation on this specific area according to a write command from the host device. 22. The device according to any one of paragraphs.16-21, which creates each of the mentioned access pointers in one cluster. 23. The device according to any one of paragraphs.16-21, which, when said corresponding temporary disk / defect management area is currently available for use, writes data to an access indicator that corresponds to this corresponding temporary disk / defect management area, available for current use. 24. The device according to any one of paragraphs.16-21, which, when the aforementioned corresponding temporary disk / defect management area becomes available for use at the moment, writes information of the temporary structure of the disk description to the access pointer of this corresponding temporary area of disk / defect management, which is recorded first in this corresponding disc / defect management area and which includes the referenced information. 25. The device according to any one of paragraphs.16-21, which, when the aforementioned corresponding temporary disk / defect management area becomes available for use at the moment, 32 times writes information of the temporary description structure to the access indicator of this corresponding temporary disk / defect management area a disc that is recorded first in this corresponding disc / defect management area and which includes the referenced information. 26. A method for reproducing control information recorded on a recording medium including one or more temporary disk / defect management areas allocated to store this control information therein until the recording medium is finalized, the method comprising the steps of where
determine which temporary disk / defect management area among the said temporary disk / defect management areas used in the designated order is currently available for use based on one or more access indicators located in one of said temporary disk / defect management areas ,
reading reference information indicating the last location of the temporary defect list information from the recording medium, and
reading said temporary defect list information from a temporary disk / defect management area, which is determined to be currently available for use, based on said reference information. 27. The method of claim 26, wherein said access indicators are located at a head of said one of said temporary disk / defect management areas. 28. The method according to p. 26 or 27, in which at the stage of determination determines which temporary area of the disk / defect management is currently available for use, by checking whether each of the mentioned access indicators has recorded data or not. 29. A device for reproducing control information recorded on a recording medium including one or more temporary disk / defect management areas allocated for storing this control information therein until the recording medium is finalized, the device comprising
a head configured to directly record / reproduce data regarding the recording medium,
a processor for processing data configured to convert the signal from the head to an appropriate signal value or to modulate the signal to be recorded into a corresponding recording signal for the recording medium,
a servo module configured to control the head for accurately reading / writing signals in relation to the recording medium,
a memory configured to temporarily store information associated with the recording medium,
an interface configured to communicate with an external device, and
a microcomputer configured to control operations performed by the head, data processor, servo module, memory and interface, and the device is configured to determine which temporary disk / defect management area among the mentioned temporary disk / defect management areas used in the assigned order is available for current use, based on one or more access indicators located in one of the aforementioned temporary areas of disk / def control Tammy, read from the recording medium the reference information indicating the location of the latest TDFL information, and reading said information TDFL of the temporary disc / defect management, which is defined as being available for use at the current time based on said reference information. 30. The device according to clause 29, in which the aforementioned access indicators are located in the head of said one of the aforementioned temporary areas of disk / defect management. 31. The device according to clause 29, further containing a host device configured to send a playback command for a specific area of the recording medium via the interface, the device is configured to perform a playback operation in relation to this specific area according to a playback command from the host device. 32. The device according to any one of paragraphs.29-31, in which the microcomputer is configured to determine which temporary area of disk / defect management is currently available for use, by checking to see if each of the mentioned access indicators is recorded data or not. 33. The device according to any one of paragraphs.29-31, in which each of the mentioned access pointers consists of one cluster.

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