MXPA06014121A - Method and apparatus for recording management information on a recording medium and the recording medium - Google Patents

Abstract

The write-once recording medium has a data structure for managing temporary defect management areas, TDMAs, of the recording medium, where each TDMA is for at least storing temporary defect management information. In one embodiment, the recording medium includes a TDMA access indicator, TAI, area for selectively storing data indicating which one of the TDMAs is currently in use.

Description

METHOD AND APPARATUS FOR RECORDING HANDLING INFORMATION IN A RECORDING MEDIA AND RECORDING MEDIA DESCRIPTION OF THE INVENTION The present invention relates to a single write recording medium, and more particularly, to a method and apparatus for recording driving information in a single write recording medium and recording medium. An optical disc has been widely used as an optical recording medium to record large amounts of data. Recently, blu-ray disc (BD) such as a high-density digital video disc (HD-DVD) has been introduced to record high-definition video data and audio data of superior sound quality. The BD has been highlighted as a next generation of HB-DVD and as a next generation optical recording solution to store more data than a conventional DVD. Accordingly, several specifications of the BD have been standardized including a rewritable blu-ray disc (BD-RE) and a single-write blu-ray disc (BD-WO). FIGURE 1 is a diagram showing a structure of a recording area on a rewritable blu-ray disc (BD-RE) according to the prior art. Particularly, FIGURE 1 shows a recording area structure of a disc having a single layer. The rewritable blu-ray disc (BD-RE) is divided into an input area, a data area and an output area of an inner circumference of the blu-ray disc. The data area is further divided into an internal spare area (ISA), a user data area and an outer spare area (OSA). The ISA is arranged on an inner circumference of the data area and the OSA is arranged on an outer circumference of the data area to replace defective areas in the data area. The user data is recorded in the user data area. During data recording in the BD-RE having the aforementioned structure, a surface of the BD-RE can be damaged or contaminated by several factors. As a result, defective areas are generated. If the defective area is generated during data recording, the data recorded in the defective area is transferred to spare areas such as the ISA and the OSA. When data is transferred to the spare areas, the handling information of the defective area is recorded in a defect management area (DMA) of the entrance area or the exit area. The defect management area is shown in FIGURE 1 as DMA1 to DMA4. The handling information of a defective area includes location information of the defective area and the spare area where the data of the defective area is recorded. A minimum recording unit of the BD is an allocation unit. A simple allocation unit includes 32 sectors and a single sector includes 2048 bytes. Since the data can be re-recorded at any location on the BD-RE, the data can be recorded at random locations without consideration of a recording method. The driving information can also be rewritten in the DMA. Therefore, the defective area can be handled sufficiently with a small DMA by using a method to update the driving information in the DMA. That is, 32 allocation units are usually assigned to each DMA of the DB-RE. In the case of a single write disc, the data can only be recorded once in the recording area of the single write disc. Accordingly, the recording of data is limited by the recording method. Therefore, defect handling has become a major factor in a single high density write disc such as the single write blu-ray disc (BD-WO). The defect handling area is required on the single write disc to record defect handling information and disc usage status information. A method of handling defects of the single write disc is more complicated compared to the rewritable disc due to the unique writing characteristic. Nevertheless, a unified standard that supports the aforementioned requirements of the single writing disc is not completely standardized and thus an effective management method has existed in great demand. The present invention relates to a recording medium having a data structure for handling a single write recording medium. In one embodiment, the single write recording medium has a data structure for handling temporary defect handling areas, the TDMAs, of the recording medium, where each TDMA is for at least storing the temporary defect handling information. In this embodiment, the recording medium includes a TDMA access indicator, TAI, area for selectively storing data indicating which of the TDMAs is currently in use. In one embodiment, the recording medium includes TDMA to TDMAn for storing temporary defect handling information, and the TAI area includes a sub-area corresponding to each of TDMAl to TDMAn, respectively. Each sub-area includes data if corresponding TDMA has been used. The sub-area that includes data that corresponds to TDMA of the highest number indicates that TDMA with the highest number is the TDMA that is currently in use.

For example, if a TDMA has been used, the corresponding sub-area includes a first temporary disc definition structure, TDDS, which is recorded in the TDMA. The TDDS includes at least one pointer for information in the TDMA. As another example, if a TDMA has been used, the corresponding sub-area including a plurality of copies of a first temporary disk definition structure, TDDS, which is recorded in the TDMA. In addition, in one embodiment, the sub-area that includes data that corresponds to the TDMA with the highest number also indicates that the TDMAs with the lowest number have been fully used. In one modality, the sub-areas are allocation units. Accordingly, if a TDMA has been used, the corresponding allocation unit may have a first sector that stores a first temporary disk definition structure, TDDS, which is recorded in the TDMA. 0, if a TDMA has been used, each sector of the corresponding allocation unit includes a first temporary disc definition structure, TDDS, which is recorded in the TDMA. In one embodiment, the allocation units are assignment units of the TDMAO. For example, the allocation units corresponding to TDMAn to TDMAl can be a second allocation unit (n + l) of TDMAO. In another embodiment, the TAI area also includes a first allocation unit of the TDMAO, and the first allocation unit indicates whether the recording medium is closed. For example, the first allocation unit indicates that the recording medium is closed if the first allocation unit includes data. In one embodiment, if closed to the recording medium, a first sector of the first allocation unit includes the defect data structure, DDS, recorded in a defect management area, DMA. In another embodiment, if the recording medium is closed, each sector of the first allocation unit includes the defect data structure, DDS, recorded in a defect handling area, DMA. In an additional mode, the TAI area indicates which of the TDMAs is used completely. In yet another mode, the TAI area indicates whether the recording medium is closed. The present invention further provides apparatuses and methods for recording and reproducing in accordance with the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated into and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention. invention. In the drawings: FIGURE 1 illustrates a recording area structure of a rewritable blu-ray disc (BD-RE) according to a prior art; FIGURES 2A and 2B illustrate a structure of a single optical writing disc and a method for recording driving information in accordance with an embodiment of the present invention; FIGS. 3A to 4C illustrate a method for IAT that indicates whether TDMA and DMA are used in accordance with one embodiment of the present invention; FIGURE 5A illustrates various disk defect handling information recorded in a TDMA and the temporary disk handling structure information (TDMS) representing a state of use in the disk according to an embodiment of the present invention; FIGURE 5B illustrates a structure of a TDDS between TDMS according to an embodiment of the present invention; FIGURE 6 illustrates a method for recording TDDS in TAI according to one embodiment of the present invention; FIGURES 7A and 7B illustrate a management information structure recorded in a DMA according to an embodiment of the present invention when closing a disk; FIGS. 8A to 8D illustrate management information recorded in TAI and DMA according to one embodiment of the present invention when closing a disk; FIGURE 9 illustrates an optical disk recording / reproducing apparatus according to an embodiment of the present invention; and FIGS. 10 to 12 illustrate a method for recording handling information of a single optical write disk according to one embodiment of the present invention. Reference will now be made in detail to exemplary embodiments of the present invention, which are illustrated in the accompanying drawings. Whenever possible, the same reference numbers will be used throughout the drawings to refer to the same or similar parts. FIGURES 2A through 2B are diagrams illustrating a structure of a single optical writing disc and a method for recording driving information in accordance with one embodiment of the present invention. FIGURE 2A shows a single layer disc having a recording layer and FIGURE 2b shows a double layer disc having two recording layers. The single layer disc has a recording layer of FIGURE 2A divided into an input area, a data area and an output area of an inner circumference of the blu-ray disc. The data area is further divided into an internal spare area (ISA), a user data area and an outer spare area (OSA). The ISA is disposed of the inner circumference of the data area and the OSA is provided with the outer circumference of the data area to replace a defective area in the data area. The user data is recorded in the user data area. In contrast to a rewritable optical disc, the optical single writing disc includes a plurality of temporary disc handling areas (TDMA) in addition to a plurality of disc handling areas (DMA) due to the characteristics of the optical single write disc . The DMA of FIGURE 1 is used for the handling of defective area, but the DMA of FIGURES 2A and 2B are used to record final handling information when a disc is closed on the BD-WO (Blu-ray single write disc) ). The final handling information includes not only the defect handling information, but also a record state of the disc. Therefore, in the BD-WO, it is defined as the disk handling area (DMA). Also, the TDMA is an area where the disk management information is updated before the disk closes. The TDMA is classified into two types: a TDMAO area and a TDMAl area. The TDMAO is located in the entrance area and has a fixed size of 2048 physical allocation units. The TDMAl is located in the outer spare area (OSA) and has a variable size, which varies according to the size of the OSA.

The TDMAO can be defined as a necessary disk management area and the TDMAl can be defined as an alternative or optional disk management area. It is possible to decide the size of the TDMAl when a corresponding area is assigned to the TDMAl. Preferably, a 1/4 of the spare area is assigned to the TDMAl. Therefore, a size of TDMAl is an allocation unit of P = N * 256/4, where P is a size of the TDMAl and N is the number of sectors in the spare area containing the TDMAl. Also, the plurality of TDMAs is used according to a predetermined order. That is, the TDMAO can be used first and the TDMAl can be used later. TDMA identification numbers can be assigned based on the order of using the TDMAs. In the present embodiment, the handling information for handling the plurality of the TDMA and the DMA can be additionally recorded in a front part of the TDMAO. The driving information provides information that indicates which TDMA is currently used. This information can be accessed when the optical disc is loaded in a recording / playback apparatus. Accordingly, the final defect handling information and the disc usage status information are easily reproduced at the initial access. In this way, an initial access time is reduced. In addition, the closing of the disc can be confirmed using the driving information. This will be explained later. The information related to accessing a currently used TDMA can be defined as a TDMA access indicator information (TAI) in the present modality. TAI information can be expressed using the first two allocation units among the 2048 units of TDMAO allocation. The area of the first two allocation units is referred to as the TAI area in the present modality. FIGURE 2B shows a structure of a double-layer disc having two recording layers. The double layer disc includes a first layer of recording layerO and a second layer of recording layerl. The first recording layer includes an entrance area as a handling area of an outer circumference area, a data area and an exterior area 0. The entrance area may be called an interior area. The data area of the first layer of recording layer O includes an inner spare area ISAO, a user data area and an outer spare area OSA0. Also, the second recording layer includes an exit area as a handling area of an outer circumference area, a data area and an exterior area 1. The exit area of the second recording layer may also be called an interior area . The data area of the second recording layer includes an inner spare area ISAl, a user data area, and an outer spare area 0SA1. The single write dual layer optical disc of FIGURE 2B also includes a plurality of TDMA temporary disk handling areas in addition to a disk management area (DMA) to provide areas for recording varied disk handling information. In FIGURE 2B, the temporary disk handling areas are shown as TDMAO, TDMAl, TDMA2 and TDMA3. The TDMAO and TDMAl in the indoor areas can have a fixed size of 2048 allocation units and the TDMA2, TDMA3, TDMA4 in the replacement areas OSA0, OSA1, ISAl can have a variable size, which varies according to a size of the spare area. As mentioned in the above, the size of the TDMA2, TDMA3, TDMA4 can be 1/4 of the spare area. Accordingly, a size of TDMA2 and TDMA3 can be P = N * 256/4 and a size of TDMA4 can be Q = L * 256/4, where P is the size of TDMA2 and TDMA3, N is the number of sectors in the spare area, Q is the size of the TDMA4 and L is the number of sectors of the ISAl. The plurality of TDMAs may be used in accordance with a predetermined order of use. For example, the TDMAO can be used first and the TDMAl can be used later. That is, the identification numbers of the TDMAs can be assigned based on the order of using the TDMAs.

In the double layer disc of the present embodiment, the handling information for handling the plurality of the TDMAs is recorded in a front part of the TDMAO. It is very useful to provide information on which TDMA is currently used. As mentioned in the above, the final defect handling information and disc usage status information are easily reproduced in an initial access type by providing information indicating the currently used TDMA. In this way, an initial access time is reduced. Similar to the single layer disc, the information for easy access of the currently used TDMA and representing the disc closure is referred to as TDMA access indicator information (TAI) in the double layer disc of the present embodiment. In the double layer disk, the TAI information can be provided by the first five allocation units among the 2048 allocation units in the TDMAO. Therefore, an area of the first five units of allocation is referred to as an area of TAI. According to the predetermined use order of the TDMAs, the temporary disk management structure information (TDMS) is first updated in the TDMAO. When the TDMAO space is completely occupied by the updating of the TDMS information, the TDMS information is then updated in the TDMAl. A method for providing the TAI information indicating which TDMA is currently used and whether the disk is closed or not and a method for recording the TAI information will be explained thereafter with reference to FIGURES 3A and 3B. FIGURE 3A is a diagram showing a method for recording a TDMA access indicator (TAI) in the case of the single layer disc according to an embodiment of the present invention, and FIGURE 3B is a diagram showing a method for recording a TDMA access indicator (TAI) in case of a double layer disc according to an embodiment of the present invention. In the case of the single layer disc having a recording layer as shown in FIGURE 3A, the TAI is provided by using the first two allocation units among the allocation units in the TDMAO. That is, the TAI includes two allocation units to indicate whether the disk is closed or not and indicate which TDMA is currently used. One of the two allocation units is used as a DMA disk closure indicator to indicate whether the disk is closed or not, and the other allocation unit is used as a TDMAl in the usage indicator that represents if the TDMAl is currently used. As mentioned in the above, the single layer disc in this mode includes a maximum of two TDMAs (TDMAO and TDMAl). The TAI information requires an allocation unit to handle the TDMAs on the single layer disk. If the allocation unit of the TDMAl indicator is not recorded in the TAI, it represents that the TDMAO is currently used, and if the allocation unit indicator of TDMAl is recorded in the TAI, it represents that the TDMAl is currently used. In other words, when the optical recording apparatus first uses the TDMAO and the TDMAO is completely occupied with the updated information, the optical recording apparatus records the TDMAl indicator in the TAI to represent that the TDMAl is currently used. For example, if a TDMAl indicator is not recorded in TAI (not recorded) as shown in FIGURE 4A, it represents that the TDMAO is currently used. Recording the TDMAl indicator in the TAI can be achieved by recording any data in the corresponding assignment unit. Fictitious data without meaning can be recorded in the corresponding allocation unit in the TAI or real data such as the TDDS can be recorded in the corresponding allocation unit. In the present embodiment, the most recent TDDS included in the recording / reproducing apparatus is recorded in one of the allocation units in the TAI as the TDMAl indicator instead of the fictitious data. As well, a first TDDS of the corresponding TDMA can be recorded in one of the allocation units in the TAI as the TDMAl indicator. The TDDS has a size of 1 sector and is recorded in at least one sector of the TDMS. Therefore, only one sector is occupied by the TDDS and the other 31 sectors can be occupied by fictitious data when the TDDS is recorded in the TAI. However, as another alternative, the TDDS is repeatedly recorded in the 32 sectors of the allocation unit in the TAI to increase the force to read the TDDS. Detailed explanation of the TDMS and the TDDS will be provided later. If the TDDS is repeatedly recorded in a TAI allocation unit, the recording / playback apparatus can simultaneously read the TDDS during the confirmation of a recording status of the TAI at the disk initialization. Therefore, the recording / playback apparatus can quickly find the TDMA where the most recent TDMS is recorded. As mentioned in the above, the indicator of DMA indicates whether the optical single writing disc is closed or not. The closing of the disk is a state of the disk that represents that no more data can be recorded on the disk. The optical single writing disc is closed when the disc has no more space where the data can be recorded or when desired by the computer. After the optical single write disk is closed, the optical single write disk becomes a read-only disk. That is, it is not allowed to record more data on the optical single write disk. The closing of the disc is also called finalized disc. If the optical disc is closed ie if the optical disc is finalized, the optical recording / reproducing apparatus transfers the most recent driving information recorded in the TDMA to a DMA area and a DMA indicator assignment unit in the TAI it is changed to a state to represent the closed disk. Therefore, the TAI is used not only as information that indicates the currently used TDMA but also information that represents that the disk is closed. The data recorded in the DMA indicator assignment unit may be the recent TDDS information or the DDS information recorded in the DMA. This will be explained later in detail. FIG3B shows a method for recording the TAI in a single structdouble layer disk having two recording layers according to one embodiment of the present invention. The TDMA of the double layer disc may include, in this modality, a maximum of five TDMA (TDMAO to TDMA4) as mentioned in the above. Therefore, the TAI information requires four allocation units to handle the five TDMAs as shown in FIG3B. Additionally, the TAI also includes an allocation unit for a DMA indicator. If the TDMAl indicator through the TDMA4 indicator is not recorded in the TAI, the TAI represents that the TDMAO is currently used. If the TDMAl indicator but the non-indicator of TDMA2 to TDMA4 is recorded in the TAI, the TAI represents that the TDMAl is currently used and the TDMAO is fully occupied. Similarly, if the TDMA2 indicator, but not the indicator from TDMA3 to TDMA4 is recorded in the TAI, this represents that the TDMA2 is currently used and the TDMAl is fully occupied (as is the TDMAO). Also, the TDMAl indicator has been recorded. If the TDMA3 indicator, but not the TDMA4 indicator, is recorded in the TAI that represents that the TDMA3 is currently used and the TDMA2 is fully occupied (as is the TDMAl and the TDMAO). Also, the TDMA2 and TDMAl indicators will have been recorded. Furthermore, if the TDMA4 indicator is recorded in the TAI, this represents that the TDMA4 is currently used and the TDMA3 is fully occupied (as is the TDMA2-TDM0). Also, the TDMA1-TDMA3 indicators will have been recorded. Established otherwise, a TDMA indicator indicates that the corresponding TDMA has been used. Therefore, the TDMA indicator has been recorded and corresponds to the highest number TDMA indicates that the TDMA is currently used. This also indicates that the TDMAs with the lowest number are fully used. For example, if the TDMAl indicator and the TDMA2 indicator are recorded in two TAI allocation units as shown in FIG4B, this represents that the TDMA2 is currently used. The TDMA indicators are recorded in the TAI allocation units in a reverse order of physical sector numbers of the allocation units. That is, a lower number of the TDMA indicator occupies a higher physical sector number of the allocation units allocated to the TAI. By recording the TDMA indicators in the reverse order of the physical sector numbers of the allocation units, interference with an optimal power calibration (not shown) which is neighbor to the TDMAO, can be avoided. When the optical single writing disc is loaded in the optical recording / playback apparatus, a currently used TDMA location can be detected based on the TAI. In this way, the most recently recorded TDMS information can be read from the detected TDMA. That is, initial information can be obtained quickly for reproduction.

If the TAI does not exist, the optical recording / playback apparatus finds the TDMA currently used when scanning the TDMA from the TDMAO. Therefore, the optical recording / playback apparatus can spend a lot of time trying to find the currently used TDMA. Such a problem is solved by the TAI. In the present embodiment, the temporary disc definition structure information (TDDS) can be recorded in the allocation units of the respective TDMAl indicator to the TDMA4 indicator instead of recording fictitious data to indicate the currently used TDMA. Accordingly, the optical recording / reproducing apparatus can simultaneously read the TDDS information while confirming a recording status of the TAI. Therefore, the optical recording / playback apparatus can quickly find the TDMA area where the recent TDMS information is recorded. Meanwhile, in the case of the double layer disk, a unit of assignment of the TDMAO is assigned to the DMA indicator to indicate the status of the closure of the optical single write disk. For example, if all the TDMA indicators included in the TDMAl indicator to the TDMA4 indicator are recorded in the TAI area as shown in FIGURE 4C, this represents that the optical single write disk is closed.

That is, data can no longer be written to the single write disc and the single write disc can only be read. FIGURE 5A is a diagram showing varied disc defect handling information and disc usage status information recorded in a TDMA according to an embodiment of the present invention. As shown in FIGURE 5A, the structure information of the aforementioned temporary disk handling information (TDMS) is recorded in the TDMA except in the TAI area. The TDMS information is the disk management information. The TDMS information is recorded in more than one allocation unit, which is the basic recording unit. The varied information can be included in the TDMS information. Therefore, the varied information can be modified or additionally included in accordance with the specifications of the unique writing disc to be standardized. For example, the TDMS information may include information as described in the following. At first, the disk defect information may include a TDFL temporary defect list, and disk usage status information such as sequential recording margin information (SRRI) applied to a sequential recording mode or a bit map Space (SBM) applied to a random recording mode. One or more allocation units of the last sector, a temporary disk definition structure (TDDS) is recorded in the present embodiment. The TDDS includes location information indicating the most recent versions of the TDMS information such as TDFL, the SRRI (or the SBM) and the additional information varied. The TDDS is an area that includes general recording / playback information. As described in the above, the pointer information indicating the most recent (last updated) version of the TDFL and the SRRI (or SBM) is included in the TDDS. The TDDS is generally confirmed first when the disc is loaded in the optical recording / playback apparatus. The information included in the TDDS is continuously updated according to the state of use of the disc. Accordingly, the TDDS information is recorded in the last sector of the TDMA. Therefore, the driving information varied according to the current use of the disk can be confirmed by reading the last TDDS. FIGURE 5B shows a detailed structure of the TDDS. As shown in FIGURE 5B, the TDDS includes a TDDS identifier field and a TDDS format field to indicate the characteristics of the TDDS; a TDDS update count field to provide the number of TDDS updates; a first PSN of the disk unit area field to indicate a disk drive area currently used to record varied disk drive information; a first PSN of the defect list field to express a first number of the physical sector of a defect list when the disk is closed; an LSNO location of the user data area field and a last LSN of the user data area field to represent a beginning and an end of the user data area; a field of spare inner area size 0 and an outer spare area size field to express a size of the spare area; a complete spare area label field to express whether the spare area is complete or not, and a recording mode field to represent a disk recording mode such as a sequential or a random one; a general label bit field to represent whether the disk is write-protected or not; inconsistency tags to express a state of update of the TDMS; a last recorded address of the user data area field to indicate a location of the last recorded data in the user data area; a size of the TDMAs in the outer spare area field and a size of TDMA in the inner spare area 1 to represent a size of the assigned TDMA in the spare area; a first PSN of the la. unit of assignment of the defect list field, to represent a first physical sector number of the last defect list in the recent TDMA area, to a first PSN of the 8th. assignment unit of the defect list field, to represent an 8th. physical sector number of the last defect list in the recent TDMA area, where the defect list number does not exceed a maximum of 4 on a single layer disc and a maximum of 8 on a double layer disc; a first SRN / SBM PSN for the LO field and a first SBM PSN for the Ll field to represent a location of the last SRRI or SBM recorded according to each mode in a sequential or random recording mode; a next PSN available from the ISAO field, a next available PSN from the OSA0 field, a next available PSN from the ISAl field, and a next available PSN from the OSAI field for a next useful physical sector number in the spare area; one year / month / data from the recording field to represent the recording time; and a disk unit ID field to represent a manufacturer, an additional ID and a serial number. The TDDS information that includes the aforementioned information is updated whenever the corresponding information forming the TDDS is updated and the latest updated TDDS information is returned to the information representing the most recent state of the disk. If the disk is closed, the last TDDS is copied as the DDS in the DMA. But, a value of the first PSN of the defect list field is recorded with an original value when the last TDDS is copied. That is, the value of the first PSN of the defect list field in the recorded TDDS can have "OOh" before the closing of the disk. But, after closing the disk, an important value is assigned in the first PSN of the defect list field. This will be explained in detail with reference to FIGURE 7B. FIGURE 6 is a diagram showing a metfor recording data in a TDMA indicator assignment unit in a TAI. The TDMA indicator can be expressed by recording fictitious data in the corresponding allocation unit in the TAI area. However, in the present embodiment, the TDMA indicator is expressed in the TAI area by recording important data in the corresponding allocation unit in the TAI instead of the fictitious data to provide more information. In the area of TAI, each unit of TDMA indicator assignment indicates whether a TDMA associated as a TDMA currently used. In the present embodiment, the TDDS information is first recorded in the corresponding TDMA which is recorded in the corresponding TDMA indicator assignment unit in the TAI area. Therefore, if the optical recording / reproducing apparatus confirms the corresponding TAI area of the loaded disc, it is possible to ct which TDMA is currently used from TAI and to read the varied information such as spare area allocation and an area size of assigned spare that is normally recorded in the TDDS in this modality. The optical recording / reproducing apparatus can then read the last recorded TDDS of the corresponding TDMA and obtain the leading information for the last recorded TDFL and the SRRI (or SBM) of the last recorded TDDS. Then, the optical recording / reproducing apparatus can confirm the entire recording state of the disc and the defect area by reading the last TDFL and the SRRI (or SBM) recorded in the corresponding area. From FIGURE 7A to FIGURE 7B show several methods for recording the DMA or the TAI information when the disc is closed. A single layer disc is used as an example to explain the present modality. However, it will be readily apparent to those skilled in the art from this description that these examples can be applied to a double layer disc. As described in the above, when the disk is closed, no more data can be written to the disk and the disk becomes a read-only disk. Accordingly, the use of a TDMA is prohibited and the latest TDMS information between the driving information is copied to the DMA area.

The disk can be forcedly closed by the computer or the disk can be closed automatically when there is no longer any area for recording data in the user data area or the TDMA area. FIGURE 7A is a diagram showing a disk structure when the disk is closed. Especially, a management information structure recorded in the DMA is shown in FIGURE 7A. For convenience of explanation of the present embodiment, a single layer disk is used as the example. That is, when the disc is closed, identical driving information is recorded in four DMA (DMA1 to DMA4) on the disc. Each DMA includes 32 allocation units. The DDS and the SRRI (or SBM) are four times repeatedly recorded in the four allocation units 1 to 4. That is, the DDS is recorded in a first sector of the allocation unit 1 in each DMA. When the disc is closed, the last TDDS information is copied into the first sector of the allocation unit 1. But, a location information of the valid DFL recorded in the corresponding DMA is recorded in the first PSN of the list field of defects between the TDDS information. As shown in FIGURE 7B, basically the DDS has a structure similar to the TDDS except for the value of the first PSN of the defect list field. This is because the first PSN of the defect list field indicates a la. position of the DFL in each DMA1, DMA2, DMA3 and DMA4. Accordingly, the value of the first PSN of the defect list field is "OOh" in the TDDS structure shown in FIGURE 5B and the first PSN of the defect list fields in the DMA1, DMA2, DMA3, DMA4 have different unique position values. The last SRRI (or SMB) of the TDFL information recorded in each TDMA is copied to the DMA as the SRRI (or SBM) and the DFL of the DMA. Especially, an area where the DFL is recorded includes a total of 28 allocation units from the allocation unit 5 to the allocation unit 32. Four allocation units are collected as a group in such a way that identical DFL information is recorded. times. Also in accordance with a system, it is possible to record the DFL in allocation units 5 to 8 and the fictitious data is repeatedly recorded in the allocation units 9 to 32. FIGURES 8A to 8B are diagrams to show a method for recording DMA and TAI when a disk is closed according to a first embodiment of the present invention. When the disc is closed, a state of the DMA indicator assignment unit in the TAI is changed when it is recorded to represent the closing state of the disc. In the allocation unit of the DMA indicator, fictitious data can be recorded. However, in this embodiment, important data is recorded in the DMA indicator assignment unit to not only represent the closing state of the disk but also to transfer the important data. Also, when the disc is closed, the handling information having a data structure shown in FIGURE 7A is recorded in each DMA. As shown in FIGURE 8A, the latest TDDS information can be recorded in the allocation unit of the TAI DMA indicator according to the present embodiment. That is, to close the disc, the last TDDS information is recorded in the DMA indicator assignment unit in the TAI and DSS / SRRI (or identical SMD / DFL are recorded in four DMA.) Enter the DDS information, only the first PSN of the defect list fields have different values of the TDDS To show the four different values of the first PSN of the defect list fields, DDS1 to DDS4 are shown in FIGURE 8A FIGURE 8B shows information recorded in the allocation unit of the DMA indicator according to FIGURE 8A The last TDDS information recorded in the DMA indicator allocation unit can be recorded in one sector, and the allocation unit of the DMA indicator includes 32 sectors Therefore, the last TDDS can also be repeatedly recorded in all 32 sectors of the DMA indicator assignment unit., according to the system, the last TDDS can be recorded in a sector and fictitious data can be recorded in other sectors. Or the last TDDS can be recorded repeatedly in predetermined sectors. Accordingly, when the closed disc is loaded in the optical recording / reproducing apparatus, the optical recording / reproducing apparatus confirms whether or not the DMA indicator assignment unit is recorded to determine whether the disc is closed or not. At the same time, the optical recording / reproducing apparatus obtains useful information from the last TDDS information recorded in the DMA indicator assignment unit in the TAI. Then, the recording / reproducing audio device confirms the final disk defect list (DFL) and the recording status information SRRI and SBM when reading the recorded data in the DMA area. FIGURES 8C and 8D are diagrams showing a method for recording the DMA and the TAI when the disk is closed according to a second embodiment of the present invention. Especially, the DDS information is recorded in the allocation unit of the DMA indicator in the TAI in the second embodiment of the present invention. To perform the disc closure, identical DDS / SSRI (or SBM) / DFLs are recorded in four DMA areas. Only the first PSN of the defect list fields have different values between the DDS information. For convenience, they are shown as from DDS1 to DDS4. One of the DDS information is recorded in the allocation unit of the DMA indicator in the TAI to change a recording status of the corresponding allocation unit. The recorded DDS information can be one of the DDS1 to DDS4 or the DDS1 is recorded by default. FIGURE 8D shows information recorded in the allocation unit of the DMA indicator according to FIGURE 8C. The DSS information recorded in the DMA indicator assignment unit can be recorded in a sector. The allocation unit of the DMA indicator includes 32 sectors. Therefore, the DSS information can also be repeatedly recorded in all 32 sectors of the DMA indicator assignment unit as shown in FIGURE 8D. But according to one system, the DSS information can be recorded in one sector and fictitious data can be recorded repeatedly in the other 31 sectors. 0, the DSS information can be repeatedly recorded in selected sectors in the allocation unit of the DMA indicator. Accordingly, when the closed disc is loaded in the optical recording / reproducing apparatus, the optical recording / reproducing apparatus confirms whether or not the DMA indicator assignment unit is recorded to determine whether the disc is closed or not. At the same time, the optical recording / reproducing apparatus obtains useful information from the final DDS information recorded in the DMA indicator assignment unit in the TAI. Then the optical recording / reproducing apparatus confirms the list of defects of the final disk (DFL) and the recording status information SRRI and SBM when reading the recorded data in the DMA area. The type of information that is recorded in the allocation unit of the DMA indicator in the TAI when the disc is closed can be standardized to one of the modalities as shown in FIGURES 8A and 8C for compatibility between optical recording / reproduction apparatuses for to be able to effectively use the information recorded in the allocation unit of the DMA indicator. FIGURE 9 is a block diagram illustrating an optical recording / reproducing apparatus according to an embodiment of the present invention. As shown in FIGURE 9, the optical recording / reproducing apparatus includes a recording / reproducing unit 10 for recording data on a disc and for reproducing the recorded data and a control unit (or computer) for controlling the unit 10. of recording / playback. The control unit 20 transfers a command to record data in a predetermined area or a command to play recorded data. The recording / reproducing unit 10 records data in a predetermined area or reproduces the recorded data based on the command transferred from the control unit 20. The recording / reproducing unit 10 is generally called an optical disc unit. The recording / reproducing unit 10 includes an interconnection unit 12 for communicating with an external device; a recording unit 11 for recording or reproducing data on the optical disc; a data processor 13 for receiving a reproduced signal from the recording unit and converting the reproduced received signal to a target signal value, or modulating a signal that is recorded on the optical disc and transferring the modulated signal to the recording unit 11; a servo unit 14 for controlling the recording unit 11 in order to precisely record a signal on the optical disc; a memory 15 for temporarily storing varied information and data; and a microcomputer 16 for controlling the aforementioned elements of the recording / reproducing unit 10. After this, a method for recording / reproducing the TAI information and a method for closing a disc in the optical recording / reproducing apparatus according to an embodiment of the present invention will be explained in detail. When a disc is loaded in the optical recording / playback apparatus, the optical recording / reproducing apparatus confirms a recording status of the TAI of the loaded disc to determine whether the loaded disc is closed or not and detect a position of a currently used TDMA . If the disk is not yet closed, the microcomputer 16 obtains the currently used TDMA from the TAI information, and reads the latest TDMS information in the currently used TDMA and reads the recording status of the disk and the defect information of the latter. TDMS information. The microcomputer 16 also notifies the control unit 20 that the loaded disc does not close. Then, if a command to record or reproduce data is input from the control unit 20, the recording / playback unit 10 records data or reproduces data in a target area. Upon recording, the microcomputer 16 updates the TDMS in the TDMA area based on any well-known method. If a predetermined TDMA (k) finally takes care of updating, the microcomputer 16 uses other TDMS (k + l) to update the TDMS. When the TDMS is updated first in the TDMA (k + l), the first TDDS information recorded in the TDMA (k + l) is recorded in the TDMA indicator allocation unit (k + l) in the TAI area . When the disk is closed, predetermined information is recorded in the mapping unit of the DMA indicator in the TAI and the DMA area based on one of the methods shown in FIGS. 8A or 8C, which is decided as a standard to represent the loaded disc that closes. If the loaded disc is a closed disc, the microcomputer 16 reads the final recording status and the defect information of the information recorded in the allocation unit of the DMA indicator in the TAI and the DMA area. And then, the microcomputer 16 notifies the control unit 20 that the loaded disc is the closed disc and performs data reproduction according to a control of the control unit 20. After this, a method for recording driving information of a disk according to an embodiment of the present invention will be explained with reference to FIGS. 10 to 12. FIGURES 10 to 12 are flow charts illustrating a method for recording the handling information of a disk according to one embodiment of the present invention. As shown in FIGURE 10, the TDMS is recorded in a TDMA according to data recorded on the disc before the disc is closed in step S10. A recording state of a mapping unit of the TDMA indicator is changed to represent a position of a TDMA currently used between a plurality of TDMAs in step S20. When the disc is closed, a recording state of an allocation unit indicating the closing of the disc is modified in step S40 and the last TDMS recorded in the TDMA is recorded in the DMA in step S50. As shown in FIGURE 11, the last TDDS can be recorded in the allocation unit indicating the closure of the disc in step S40 and the last TDDS can be recorded in several of the DMAs as the DDS information in step S50. As well, as shown in FIGURE 12, the last TDDS can be recorded in several of the DMAs during the closure of the disc in step S40 and the DDS information is recorded in the allocation unit indicating the closing of the disc in step S50 . Industrial Applicability While the invention has been described with respect to a limited number of embodiments, those skilled in the art have had the benefit of that description, will appreciate numerous modifications and variations therefrom. For example, while being described with respect to a Blu-ray single-write optical disc in several instances, the present invention is not limited to this standard single-write optical disc or single-write optical discs. In fact, the embodiments of the present invention can find application in other single-write recording media. It is intended that all modifications and variations fall within the spirit and scope of the invention.

Claims (26)

1. CLAIMS 1. A single write recording medium having a data structure for handling temporary defect handling areas, the TDMA of the recording medium, each TDMA for storing at least temporary defect handling information, the recording medium characterized in that it comprises: a TDMA access indicator, TAI, area for selectively storing data indicating which of the TDMA is currently in use. The recording medium according to claim 1, characterized in that the TAI area includes at least a portion associated with a TDMA, and selectively stores data indicating whether the associated TDMA has been used. The recording medium according to claim 1, further characterized in that it comprises: TDMAO to TDMAn for storing temporary defect handling information; and wherein the TAI area includes a sub-area corresponding to each of TDMAl to TDMAn, respectively, each sub-area includes data if the corresponding TDMA has been used. The recording medium according to claim 3, characterized in that the sub-area includes data corresponding to TDMA with higher number indicates that the TDMA with higher number is the TDMA currently in use. 5. The recording medium according to claim 4, characterized in that if a TDMA has been used, the corresponding sub-area includes a first temporary disc definition structure, TDDS, which is recorded in the TDMA, the TDDS includes at least one pointer for information in the TDMA. 6. The recording medium according to claim 4, characterized in that if a TDMA has been used, the corresponding sub-area includes a plurality of copies in a first temporary disc definition structure, TDDS, which is recorded in the TDMA, the TDDS includes at least one pointer for information in the TDMA. The recording medium according to claim 4, characterized in that the sub-area includes data corresponding to the highest-numbered TDMA, further indicating that the TDMAs with lower numbers have been used completely. The recording medium according to claim 3, characterized in that the sub-areas corresponding to TDMA with higher number have smaller addresses than the sub-areas corresponding to the TDMA with lower number. 9. The recording medium according to claim 3, characterized in that the sub-areas are allocation units. 10. The recording medium according to claim 9, characterized in that if a TDMA has been used, the corresponding assignment unit has a first sector that stores a first temporary disc definition structure, TDDS, which is recorded in the TDMA, the TDDS includes at least one pointer for information in the TDMA. The recording medium according to claim 10, characterized in that if a TDMA has been used, each sector of the corresponding allocation unit includes a first temporary disc definition structure, TDDS, which is recorded in the TDMA. 12. The recording medium according to claim 3, characterized in that the sub-areas are units of assignment of the TDMAO. The recording medium according to claim 12, characterized in that the sub-areas corresponding to the TDMAn to the TDMAl are the second allocation unit (n + l) ava of the TDMAO. The recording medium according to claim 13, characterized in that the TAI area includes a first allocation unit of the TDMAO, and the first allocation unit indicates whether the recording medium is closed. 15. The recording medium according to claim 14, characterized in that the first allocation unit indicates that the recording medium is closed if the first allocation unit includes data. 16. The recording medium according to claim 15, characterized in that if the recording medium is closed, the first allocation unit includes the defect data structure, DDS, recorded in a defect management area, DMA, the DDS includes at least one pointer for the information in the DMA The recording medium according to claim 16, characterized in that if the recording medium is closed, a first sector of the first allocation unit includes the defect data structure, DDS, recorded in a defect handling area. , DMA. 18. The recording medium according to claim 17, characterized in that if the recording medium is closed, each sector of the first allocation unit includes the defect data structure, DDS, recorded in a defect handling area, DMA 19. The recording medium according to claim 1, characterized in that the TAI area indicates which of the TDMA is used completely. 20. The recording medium according to claim 19, characterized in that the TAI area indicates whether the recording medium is closed. 21. The recording medium according to claim 1, characterized in that the TAI area indicates whether the recording medium is closed. 22. A single write recording medium having a data structure for handling temporary defect handling areas, the TDMAs, of the recording medium, the recording medium characterized in that it comprises: TDMAO to TDMAn for storing driving information; and a TDMA access indicator, TAI, area that includes a second for (n + l) ava. unit of assignment of the TDMAO, the second for (n + l) ava. of the allocation unit corresponds to TDMAn to TDMAl, and if one of TDMAn to TDMAl has been used, each sector of the corresponding second to (n + l) ava. allocation unit includes a first temporary disk definition structure, TDDS, which is recorded in the corresponding TDMAn to TDMAl, the TDDS includes at least one pointer for the information in the corresponding TDMAn to TDMAl. 23. A method for recording a data structure for handling temporary defect management areas, the TDMAs, of the recording medium, each TDMA for storing at least temporary defect handling information, the method characterized in that it comprises: selectively recording information in a TDMA access indicator, TAI, area of the recording medium to indicate which of the TDMA is currently in use. 24. A method for determining a temporary defect management area, TDMA, of a recording medium currently in use, each TDMA for storing at least the temporary defect handling information, the method characterized in that it comprises: accessing an indicator TDMA access, TAI, recording medium area; and determine the TDMA currently in use based on the access stage. 25. An apparatus for recording a data structure for handling temporary defect handling areas, the TDMAs of the recording medium, each TDMA for storing at least the temporary defect handling information, the apparatus characterized in that it comprises: an impeller for driving an optical recording device for recording data in the recording medium; a controller for controlling the impeller for selectively recording information in a TDMA access indicator, TAI, area of the recording medium to indicate which of the TDMA is currently in use. 26. An apparatus for determining a temporary defect management area, TDMA, of a recording medium currently in use, each TDMA for storing at least the temporary defect handling information, the apparatus characterized in that it comprises: a driver for driving an optical recording device for reproducing data from the recording medium; a controller to control the impulse to access a TDMA access indicator, TAI, area of the recording medium, and to determine the TDMA currently in use based on access.