KR20060019528A - Recording medium having data structure for managing at least a data area of the recording medium and recording and reproducing methods and apparatuses - Google Patents

Abstract

The data structure on the recording medium includes a temporary defect management area for storing a data block, the data block includes a temporary disc definition structure, and the temporary disc definition structure indicates a recording mode of the recording medium.

Recording medium, TDMA, TDDS, recording mode, continuous recording, random recording

Description

RECORDING MEDIUM HAVING DATA STRUCTURE FOR MANAGING AT LEAST A DATA AREA OF THE RECORDING MEDIUM AND RECORDING AND REPRODUCING METHODS AND APPARATUSES}

The present invention relates to a recording medium having a data structure for managing a data area, and a recording and reproducing method and apparatus.

Standardization of new high-density reproduction-only and rewritable optical discs capable of recording large amounts of data is underway, and it is expected that products related to new high-density optical discs commercially available will be released in the near future. For example, Blu-ray Disc (BD), the next generation HD-DVD technology, is the next generation optical recording solution that significantly surpasses the recording capacity of existing DVDs.

Blu-ray discs use a 405nm blue-violet laser, which is much denser than current DVDs that use 650nm red lasers, and can store a greater amount of data than current DVDs.

A rewritable Blu-ray Disc (BD-RE) has been developed, and another recordable Blu-ray Disc (BD-WO) is under development. Although the BD-RE standard provides a data structure for managing defects in the data area in the recording medium, the BD-WO cannot apply the current BD standard such as the BD-RE because of the one-time recording property. In enacting the WO standard, there is a need for an efficient data structure and defect management method for defect management.

The recording medium according to the present invention includes a data structure for managing at least a data area within the recording medium.

In an embodiment of the present invention, the recording medium includes a temporary defect management area in which a data block including a temporary disk definition structure indicating a recording mode of the recording medium is stored. The recording mode is either continuous recording or random recording.

The data block also includes usage state information of the recording medium data area, the usage state information provides information on the use of the data area, and when the recording mode is continuous recording, the recording medium is stored in the data block. Contiguous recording information is provided for providing information on successive recording areas in the data area. When the recording mode is random recording, the data block is a space bitmap (SBM) indicating the recording status of the recording medium data area. It will include.

As another embodiment of the present invention, there is provided a method of formatting a recordable recording medium once. That is, an input relating to a desired recording mode of the recording medium is received, and the recording mode information is recorded in a temporary disk definition structure in the temporary defect management area. For example, the recording mode is one of a continuous recording mode and a random recording mode. When the recording mode is a continuous recording mode, the temporary recording information for providing the information about the continuous recording area in the recording medium data area is temporarily changed. Recording in the management area, and if the recording mode is the random recording mode, a space bitmap (SBM) providing information on the recording state of the recording medium data area is recorded in the temporary defect management area.

As another embodiment of the present invention, there is provided a method of recording management information on a recordable write once medium. In this embodiment, the recording mode information recorded in the temporary disc definition structure in the temporary defect management area is reproduced, the recording mode of the recording medium is determined from the recording mode information, and from the determination step, The recording medium use status information, which provides information on the use of the data area, is recorded in the temporary defect management area.

As another embodiment of the present invention, there is provided a method of recording management information on a recordable write once medium. That is, when an event occurs, the recording medium use state information providing information on the use of the recording medium data area for storing data is updated to record the updated use state information in the temporary defect management area.

As another embodiment of the present invention, in the write-once recording medium having a data structure for managing the data area of the recording medium, a plurality of defect lists having different sizes are recorded in the temporary defect management area. Each defect list indicates a defect in the data area of all the recording layers existing at the time of recording the defect list, and records a plurality of temporary disk definition structures having a fixed size in the temporary defect management area. The temporary disk definition structure of < RTI ID = 0.0 > provides usage status information for the data area for each recording layer, which existed at the time when the temporary disk definition structure is written.

In another embodiment of the present invention, in a method for recording management information on a recordable recording medium, at least one defect list is recorded in a temporary defect management area, wherein the defect list is a data area of all recording layers. Lists the defects in the list, and the recorded defect list is recorded to have a different size from the previously recorded defect list by recording the new defect list in the previous defect list, and temporarily storing at least one temporary disk definition structure. Recorded in the defect management area, the temporary disk definition structure provides usage status information about the data area for each recording layer existing at the time when the temporary disk definition structure is recorded, and the recorded temporary disk definition structure is a previous temporary disk definition. It is characterized by having the same size as the structure.

In another embodiment of the present invention, a write-once recording medium having a temporary defect management area for recording at least one temporary disk definition structure for providing usage status information about a data area for each recording layer in the recording medium. A method of recording management information in a recording medium, characterized in that the latest temporary disc definition structure for each recording layer is recorded into a defect management area of a recording medium.

The present invention further provides a method and apparatus for recording or reproducing a data structure according to the present invention.

Further objects and advantages of the present invention will become more apparent from the drawings associated with the following detailed description. The configuration is as follows.

Fig. 1 shows a single-layer writeable optical disc according to the present invention.

Fig. 2 shows a comparison of the disc management information of the present invention with the disc management information of a conventional general rewritable optical disc.

3 illustrates an optical disc initialization method based on a recording mode according to an embodiment of the present invention.

Figure 4 shows different kinds of tracks in an optical disc of write once type according to an embodiment of the present invention.

5A and 5B show a data structure of an optical disc of write once type according to an embodiment of the present invention, in particular showing temporary disc management information.

Fig. 6 shows recording directions for different areas in an optical disc according to the present invention.

FIG. 7A shows a Space Bitmap (SBM) recorded in the first 31 sectors of the cluster and a Temporary Disc Definition Structure (TDDS) recorded in the remaining sectors according to the present invention.

7B shows an example of the data structure of the SBM.

8 and 9 show, for example, methods of recording information in TDMA and DMA according to the present invention, respectively.

10 shows a recording / playback apparatus according to the present invention.

For accurate understanding of the present invention, the embodiments of the present invention will be described in detail below with reference to the drawings. For convenience of explanation, a write once Blu-ray disc will be described as an example of a write once disc.

<Data structure of record carrier>

1 and 2 show a method of recording a writeable optical disc structure and temporary disc management information to which the present invention is applied.

For reference, the structure of the write-once optical disc to which the present invention is applicable (Fig. 1) is also described in detail in Korean Patent Application No. 2003-15634 filed by the present applicant.

The illustrated write-once optical disc relates to a single layer disc having one recording layer, which is to be recorded in the main data area due to a defect (for example, a physical defect) of the main data area. It includes a spare area (ISA0 / OSA0) for alternate recording. In addition, information for managing the replacement of the defective area data with the spare area is recorded on a temporary defect management area (TDMA).

In general, unlike an optical disc that can be written once, in the case of a rewritable optical disc, even if only a limited defect management area (DMA) is provided, writing and erasing can be repeated on the DMA. In the case of an optical disc, once a recorded area cannot be used for recording again, a larger management area is required for defect management. Therefore, the TDMA is used to record defect management information, and this defect management information is changed as the optical disc is used. When the disk is used, the latest information of the defect management information is copied from the TDMA on the optical disk to the DMA.

In FIG. 1, the TDMAs are allocated to TDMA1 having a fixed size in the lead-in area and TDMA2 having a size linked with the size of the spare area in the outer spare area OSA0. For example, if the size of spare area OSA0 is N * 256 cluster, TDMA2 in spare area OSA0 is P cluster, and P value is determined as P = (N * 256) / 4. In each TDMA, a temporary defect list (TDFL), a temporary disk management information (TDDS), and disk use status information are recorded.

In this regard, as described above, when a defective area is generated in the data area, a process of replacing the spare area with a spare area is performed, and the TDFL refers to information provided as a list for managing the series of processes. For example, the list is information specifying a defective area and a spare area in which the defective area is replaced. According to an embodiment of the present invention, the size of the TDFL is variably changed to the size of 1 to 4 clusters based on the amount of information recorded in the TDFL. Also according to an embodiment of the present invention, the TDDS is recorded in one cluster of fixed size. In the embodiment, the TDDS and the disk usage state information are recorded in the data block of one cluster, which will be described later in FIGS. 2, 5A, 5B, and 7A, 7B and 7B. In this regard, the disc use status information is either continuous record information (e.g., Track-Info) or a space bitmap (SBM), depending on the recording mode of the optical disc, which can be written once.

First, referring to FIG. 2, the disc management information of a conventional rewritable optical disc and the information contained in the TDDS of the present invention will be described as follows.

In the case of a rewritable optical disc, the DDS uses only about 60 bytes of information, which is only a part of one cluster (comprising 32 sectors), and all remaining areas in one cluster are set to 'zero padding'. However, in the embodiment of the present invention, in addition to the area 60ytes utilized in the existing rewritable optical disc, the remaining area is used as disc management information. Therefore, the TDDS of the present invention continuously records the necessary information from the DDS utilized in the existing rewritable optical disc as well as the write once optical disc such as the present invention, but the size is 1 sector (2048 bytes). For example, information that is particularly necessary for an optical disc that can be recorded once includes recording mode information in which one recording method is determined among a plurality of possible recording methods. Detailed descriptions of the recording mode and information specifying the recording mode will be made later. In this regard, as the information particularly needed in the write once optical disc, the latest TDFL position information or the like may be included.

As shown in Figs. 1 and 2, the disc usage status information of the present invention is recorded on the remaining 31 sectors of one cluster including the TDDS. In this regard, the disc usage state information may be, for example, continuous recording information such as track information (Track-Info) or space bitmap (SBM) information according to a recording mode, which will be described later. to be. The disc use state information may be recorded in the first 31 sectors of the TDDS 1 cluster, and the TDDS information may be recorded in the last 32 sectors. In this regard, the disk use status information is information that changes according to the use of the disk user, and is intended to provide information necessary for accurately searching for additional recordable areas through the division of recorded / unrecorded areas in the entire disk.

Therefore, the TDDS used in the description of the present invention should be interpreted in a broad sense, as described above, and should not be interpreted only in terms defined according to a specific standard.

<Recording Mode and Initialization Method>

3 is an embodiment of the present invention, and relates to a method of initializing an optical disc according to a recording mode.

As described above, the present invention intends to support various recording methods despite being a write once optical disc, which means 'sequential recording mode' and 'random recording mode'. do..

     The 'sequential recording mode' refers to a DAO (Disc At Once) method for recording all the discs at a time and an incremental recording method for recording the discs sequentially. In particular, the continuous recording method of the present invention is a method of not limiting the number of additional recordable areas in a disc in the incremental recording method. In particular, in the present invention, a region in which the data is continuously recorded is referred to as a track, and the continuous recording information is referred to as track information (Track-Info), and a detailed description thereof will be described later.

     'Random recording mode' is a method that can freely record the entire area of the disc. That is, the recording order of the recording areas in the disc is not limited. In relation to this, in the random recording method, a space bitmap (SBM) is utilized as disc usage state information indicating a recording state of a disc, which will be described later.

As the present invention supports a plurality of recording modes as described above, it is necessary to determine the corresponding recording mode at the time of initialization of the disc and to initialize it based on the determined recording mode. That is, a user or a disc producer or a host (hereinafter collectively referred to as a 'host') decides a recording mode of the disc, and sets recording mode information in a specific management area in the disc. Specifically, when the recording method of the disc is determined by the host or the like, the disc recording system sets the 1 byte (1 byte) recording mode corresponding to the determined recording method in the TDDS, and the disc usage status information linked to the recording mode. Will be determined. That is, if the recording mode is the continuous recording mode, the system sets the recording mode to '0000 0000b' and sets 'Track-Info' as the usage state information. In addition, if the recording mode is a random recording mode, the system sets the recording mode to '0000 0001b' and 'SBM' as the usage status information. Therefore, when the disc is used later, the system records the disc in a recording manner according to a predetermined recording mode and updates one of the use state information corresponding thereto as necessary as management information of the disc.

When the initialization is completed and a recordable disc is loaded, the system first determines a recording mode of the disc, and according to the recording mode determination, any one of the plurality of disc usage state information recording methods linked with the recording mode is determined. Is determined to update the determined management status information in the disk management area set in the disk.

     Hereinafter, a detailed structure and a recording method for 'Track-Info' and 'SBM' managed in association with a recording mode in the TDDS will be described, and the TDDS and TDFL are recorded in TDMA and DMA. A detailed method will be described next.

<Kinds of Tracks>

Referring to Figure 4, the type and physical structure of the track according to the embodiment of the present invention will be described. In the present invention, the business card has been described above as a track in which the data is continuously recorded. Fig. 4 shows different kinds of basic tracks of the write once optical disc according to the embodiment of the present invention. More specifically, Fig. 4 shows a plurality of continuous recording areas (or tracks) having different states after assuming that a write once disc is used for a certain period of time. As shown, the tracks 1 and 2 correspond to a kind of open track that can be additionally recorded on the trailing area (or remaining area) of the track while data is recorded in the track leading area. In addition, tracks 3 and 4 are tracks in which the tracks are completely recorded (track 4) or additional recording is prohibited (track 3), and these tracks become close tracks where no further recording is possible. In particular, the illustrated track 3 pads the unrecorded area to 'zero' when the track with the unrecorded area is closed and no more recording is allowed in the track (the part hatched in Fig. 4). Indicates that the track has been changed. In this respect, recording of all areas in the track is distinguished from completed track 4.

In addition, track 5 includes an area where additional recording is always possible as the last track, which is referred to as an intermediate track in the present invention. Therefore, three types of tracks to which the present invention is applied are classified into an open track, a close track, and an intermediate track.

Each track always has the last address information (LRA: Last Recorded Address) on which data is recorded regardless of the type of track. Since the LRA actually means the last address where data is recorded, in the case of track 3, the position before 'zero padding' becomes the track 3 LRA. More specifically, when the recording unit of the optical disc is a cluster, there are 32 sectors in one cluster. If only a portion of sectors are recorded in one cluster, the remaining sectors are 'zero padding'. The LRA will be the last sector address before 'zero padding'.

In addition, for each open track and intermediate track except for a close track, a NW (Next Writable Address) for designating an address where data can be recorded is determined, and the NWA is It becomes the head sector address of the cluster after the LRA.

<Data structure of Track Info on the recording medium>

First of all, the present invention does not limit the number of open tracks. Accordingly, a plurality of open tracks and close tracks exist, and the present invention seeks to provide a data structure on an optical recording medium for efficiently managing them.

FIG. 5A shows a case where the recording mode information recorded in the TDDS specifies the continuous recording mode, and is track information (Tarck-Info) as the disc use state. Hereinafter, an embodiment of the data structure of the track information (Tarck-Info) will be described in detail with reference to FIG. 5B.

As shown in FIG. 5B, the track information is largely composed of three parts, that is, a header for recognizing track information, and a track information list for directly displaying track information. And an end display section (Track Info List terminator) indicating the end of the track information.

The header is located at the beginning of the track information, and includes a 'Track Info Structure identifier' field for recognizing track information, a 'Track Info Format' field for specifying track information format, and a currently created track information. Contains a 'Layer number (0 or 1)' field indicating the type of recording layer. In this regard, the present invention has been described, for example, with respect to a write-once optical disc having one recording layer on a single sided, but is equally applicable to a disc having a plurality of recording layers or a double sided disc. .

The header includes a 'Total number of tracks' field indicating the total number of tracks in the data area of the corresponding recording layer, and a 'Total number of tracks' indicating the number of open tracks in the data area. It contains more open tracks' fields. As a result, the contents of the entire track information can be checked before reading the list of track information through the header.

After the header section, a list of track information (List of Track Info) to be described later is recorded, and when the list of track info ends, a track end list section (Track Info List terminator) indicates the end of the track information. do. Accordingly, the track information is composed of a header, a list of track info, and a track info list terminator, all of which are collectively recorded.

Hereinafter, a detailed example of a list of track info will be described. The List of Track Info includes one entry corresponding to one track in the disc, each entry being allocated, for example, by 8 bytes. Each track information entry includes track status information (track ststus) of the track, first address information (Strat PSN of Track #n) of the track, and last address information (where data is recorded on the track). LRA of Track #n).

In relation to this, the track status information is information in which the type of the track (ie, open, closed, or intermediate) as shown in Fig. 4 is expressed in 4 bits. In the present invention, for example, '0000b' for an open track where additional recording is possible in the track, and '0001b' for an intermediate track. The close track is expressed as '1000b'. In relation to this, as described above, the track status information is indicated by a specific bit for use in sorting track information list entries to be described later.

In the embodiment of FIG. 5B, the first address information of the track is recorded in the 'Start PSN (pysical sector number) of Track' field, and the last address information in which data is recorded is recorded in the 'LRA of Track' field. . Therefore, when one entry is read, the type, start position, and LRA of the track can be identified accurately.

In this regard, the track status present in each entry may include session start bits, for example, bits in the track ststus. One bit of the key may be used as session start bit. In other words, a session refers to a state in which a plurality of tracks are grouped into one group (gropu), and the session information designates whether a specific track is the first track in the session.

<SBM structure and recording method>

Fig. 6 shows recording directions in different areas of the optical disc. This description is useful for understanding the data structure of the SBM which will be described later in FIGS. 7A and 7B.

While the single-layer optical disc shown in FIG. 1 has one recording layer, the BD-WO may include a plurality of recording layers, and the description from the single-layer perspective in the present invention applies to the case where there are two recording layers. It is possible. In relation to this, for convenience of description, Fig. 6 briefly shows each area in the plurality of recording layers of an optical disc of write once type, such as a BD-WO.

In the BD-WO of Fig. 6, first and second recording layers (Layer0 / Layer1, hereinafter referred to as 'L0' and 'L1') are provided, and each recording layer includes an inner area, an inner spare area, a user area, It includes an outer spare area and an outer area. In a dual-layer disc, the inner area of the first recording layer L0 becomes a lead-in area, and the inner area of the second recording layer L1 is a lead-out area. ) However, in the case of a single-layer disc, the outer area becomes a lead-out area.

In Fig. 6, L0 of the first recording layer is used from the inner circumference to the outer circumference, except that the outer spare area OSA0 is used from the outer circumference to the inner circumference. On the other hand, L1 of the second recording layer is used from the outer circumference to the inner circumference, except that the inner spare area ISA1 is used from the inner circumference to the outer circumference. Therefore, the starting position of each region is determined by the direction of use of the region. However, this only takes into account the efficient use of the disk. If the direction of use of each region is changed, the starting position of the region will also be changed naturally.

As described above, a direction of use and a start position of each area of the disc are defined, and a method of displaying the SBM changed according to the use state of the disc will be described in detail.

As shown in Fig. 7A, when the recording mode information in the TDDS indicates the random recording mode, the disk use state information becomes SBM. 7B shows an example of the SBM data structure. As shown, the SBM is largely composed of three parts, which includes a header for recognizing the SBM, an SBM Info for directly displaying the SBM, and an end indicating the end of the SBM. It consists of a display part (SBM Terminator).

     In addition to making the SBM recognizable, the header part includes a layer number 0 or 1 field and a format version field, and the layer number 0 or 1 field contains the currently created SBM. Information indicating which recording layer is associated is recorded, and information indicating the format version of the current SBM is recorded in the Format version field.

SBM Info creates a SBM for each area when the disk is divided into a plurality of areas as shown in FIG. 6, and also enables to determine whether to update the SBM (Space Bitmap) for each area as required by the host. .

In detail, the SBM information unit includes Start Cluster First PSN for each region, length information of the region, and bitmap data of each region. . In one embodiment, the bitmap information can be updated only when both the start position information and the length information are set. This method is called SBM on / off, in particular, to actively respond to various needs of the host. Also, in case of BD-WO, if real-time recording is used, defect management may not be performed. In this case, spare area will not be allocated, so there is no need to update SBM of the area.

In a specific case, only the user area, which is an area in which user data is actually recorded, may be managed by the SBM, and the remaining areas may not be updated. The operation according to the present embodiment is useful in preventing the SBM because the SBM is updated too frequently whenever there is a change in management information. In other words, the present embodiment can prevent the problem of consuming the usable TDMA area on the disk too quickly. Therefore, by utilizing the SBM on / off function of the present invention, only the SBM is updated in the user data area, and the remaining area is set to a specific value, for example, a 'zero' value. By setting, it can not be updated.

In addition, as the SBM is updated, a new SBM + TDDS data block is recorded in the TDMA, and the SBM cumulatively indicates whether the disc is recorded. That is, as the SBM is updated, the TDDS is also updated. In particular, information indicating the location of the new SBM is recorded in the TDDS.

<How to update track information>

When 'track information' or 'SBM' is determined as the disc use state information according to the recording mode, the timing of updating the corresponding information is problematic. The update may basically be a free design of the system, but in the following cases, updating must serve the purpose of recording this information.

First, the timing of updating the disc usage status information in the continuous recording mode should be performed when a new recordable area is created in the disc while the disc is in use, or when the created area is changed to a recorded area. Similarly, in the random proxy, the SBM is updated when a new recordable area is changed. In addition, when the disc is ejected, the power is turned off, or when the disc is suspended, the 'Track-Info' or 'SBM' should be updated.

<How to record temporary defect management area (TDMA) & defect management area (DMA)>

8 and 9 illustrate a method of recording information in TDMA and DMA according to the present invention, respectively. FIG. 8 relates to a method of recording TDDS information and TDFL information including disk usage status information in a TDMA while the disk is in use, and FIG. 9 transfers the final information recorded in the TDMA to the DMA when the disk is finalized. It relates to how to record.

8 shows only the case of TDMA1 present in the lead-in area of the TDMA of the present invention, but it will be apparent that the same applies to the TDMA present in other areas of the disc. In the present invention, TDFL and TDDS recorded in TDMA are recorded by the following method.

The TDFL records and manages in order of occurrence of a defective area regardless of the recording layer, and has a variable size. That is, as the recording progresses, as the TDFL exceeds one cluster due to an increase in the defect area, the TDFL may increase in size from 1 to 8 clusters. The maximum number of clusters is determined by considering the total disk capacity. That is, for example, up to 4 clusters in the case of one recording layer, up to 8 clusters in the case of two recording layers.

Next, the TDDS has a fixed size and is separately recorded and managed for each recording layer. That is, as shown in Fig. 8, TDDS for each recording layer is alternately recorded, which is related to 'track information' and 'SBM' recorded in the TDDS separately recorded for each recording layer. In addition, an area is allocated in the TDDS to record 'Location information of the latest TDFL' (4 bytes) and 'Latest TDDS position information (4 bytes) for another recording layer', and the above information is updated whenever the TDDS is updated. Update together. Therefore, if you always read the last recorded TDDS information (regardless of the recording layer), all information about the disc, for example, the disc recording mode, the latest usage status information (Track-Info or SBM), the latest TDFL Location information, the latest TDDS location information for the other recording layer, etc. can all be checked and the disk can be efficiently managed.

9 shows only the case where data is recorded in DMAs 1 and 2 existing in the lead-in area of the DMA of the present invention, but it will be apparent that the same applies to DMAs existing in other areas of the disc.

First of all, the time to write to the DMA of the present invention may occur when the disc is no longer able to write (this may occur when the TDMA or the spare area is full) or the user arbitrarily finalizes the disc. May occur in some cases. In addition, the contents recorded in the DMA transfer the last TDDS / TDFL information recorded in the TDMA to the DDS / DFL in the DMA. Therefore, the contents recorded in the final TDDS / TDFL are written to the DDS / DFL with almost no change. Therefore, the DDS / DFL means that the recording on the DMA means the final recording on the disc, and has the same structure and contents as the TDDS / TDFL.

In the present invention, the DDS and DFL recorded in the DMA are recorded by the following method.

The DMA according to the embodiment of the present invention is composed of a total of 64 clusters in the case of a plurality of recording layers, of which the first eight clusters are areas for recording DDS information, and the remaining 54 clusters are areas for recording DFL information.

The DDS in the DMA has the same structure as that of the TDDS, in which the upper one sector in one cluster (comprising 32 sectors) is the area where the same information as that used in the rewritable disc (BD-RE) is recorded; Records information used only on the BD-WO (e.g., disc recording mode, latest usage status information (track information or SBM), latest TDFL location information, latest TDDS location information for other recording layers, etc.) In the remaining 31 sectors, 'track information' or 'SBM' determined in association with the recording mode as disc usage status information is recorded separately for each recording layer.

The recording sequence is continuously recorded in the order of TDDS (TDDS for L0) of the first recording layer and TDDS (TDDS for L1) of the second recording layer, and following the continuous recording, and TDDS (TDDS) of the second recording layer. for L1) and TDDS (TDDS for L0) of the first recording layer are recorded in a repeating manner in the recording order. This is to consider the actual structure of the disk and to prepare for the possibility that the DMA information may be damaged by the direction (mainly horizontal direction) where scratches or the like occur due to the external environment.

In addition, since the final TDFL contents are previously recorded as they are in the DMA, and the TDFL is recorded up to 8 clusters, the system can repeatedly record as many times as desired using the entire 56 clusters. The number of times that can be repeated is a total of seven times.

As described above, the method of recording management information of an optical disc, which can be recorded once, according to the present invention enables the selective recording of disc usage status information ('Track-Info' or 'SBM') according to the determined recording mode. This makes it possible to efficiently record information in the TDMA and the DMA, which in turn enables efficient disk use.

Fig. 10 shows an embodiment of an optical disc recording and reproducing apparatus according to the present invention. As shown, the encoder 9 receives and encodes data (e.g. still images, audio, video, etc.) and outputs the encoded data along with coding information and stream attribute information. The multiplexer 8 multiplexes the encoded data based on the coding information and the stream attribute information to generate, for example, an MPEG-2 transport stream. The source packetizer 7 packetizes the transport stream transmitted from the multiplexer 8 according to the optical disc audio / video format to generate a source packet. As shown in FIG. 10, the encoder 9, the multiplexer 8, and the source packetizer 7 are controlled by the controller 10. After receiving the user command for the recording operation, the controller 10 provides the control information to the encoder 9, the multiplexer 8, and the source packetizer 7. For example, the controller 10 instructs the encoder 9 of the encoding type to be performed, instructs the multiplexer 8 to generate a transport stream, and the source packetizer 7 instructs the source packet format. do. The control unit 10 also controls the drive 3 to record the output signal of the source packetizer 7 on the optical disc.

The control unit 10 also generates navigation and management information for managing reproduction of data recorded on the optical disc. For example, the controller 10 records one or more data structures in FIGS. 1 to 9 on the optical disc, and controls the drive 3 to perform the above-described recording and reproducing method.

During the reproducing process or the additional recording operation, the control section 10 controls the drive 3 to reproduce the above-described data structure. Based on the information in the data structure, as well as user input via a user interface, the control unit 10 reproduces the data from the above-described optical disc or writes the data to the optical disc. (3) to control.

The source depacketizer 4 receives a source packet read out from the optical disc, and converts it into a data stream (for example, an MPEG-2 transport stream). The demultiplexer 5 demultiplexes the data stream encoded data, and the decoder 6 decodes the encoded data to recover the original data input to the encoder 9. During the reproducing operation, the control unit 10 controls the operations of the source depacketizer 4, the demultiplexer 5, and the decoder 6. After receiving the user command for the reproduction operation, the controller 10 provides the control information to the decoder 6, the demultiplexer 5, and the source depacketizer 4. For example, the controller 10 instructs the decoder 6 of the decoding type to be performed, instructs the demultiplexer 5 to demultiplex the transport stream, and the source depacketizer 4 instructs the source packet format. Will be indicated.

Although the recording and reproducing apparatus is described in Fig. 10, it will be apparent that only a recording or only a reproducing apparatus can be provided by utilizing the above-described reproducing operation and a part of the recording operation.

Through the recordable optical disc management data structure and the method of recording and reproducing the data structure (including updating the management data), it becomes possible to provide information related to the use of the recording medium storing the data.

The data structure and management method for managing at least the data area of the high density recording medium according to the embodiment of the present invention enable efficient use of a write once recording medium such as a BD-WO. As clearly set forth by the foregoing detailed description, the present invention also provides an apparatus for recording a data structure on a recording medium for managing the data area of the recording medium.

In addition, although the present invention has been described for a limited embodiment only, it will be apparent to those skilled in the art that various changes or modifications may be made without departing from the technical spirit of the present invention. For example, the present invention has been described by way of example only for a Blu-ray Disc (BD-WO), but the present invention is not limited only to the optical disc. Accordingly, it is intended that the present invention and its modifications, within the equivalent scope thereof, fall within the present invention.

Claims (42)

And a temporary defect management area in which a data block including a temporary disk definition structure indicative of a recording mode of the recording medium is stored, wherein the data record for managing the data area of the recording medium is recordable. Record carrier. The method of claim 1, And the data block includes usage state information of a recording medium data area, wherein the usage state information provides information on use of the data area. The method of claim 1, And the recording mode is one of continuous recording or random recording. The method of claim 3, wherein And when the recording mode is continuous recording, the data block includes continuous recording information for providing information about the continuous recording area in the recording medium data area. The method of claim 4, wherein The continuous recording information includes a header, entry information for each continuous recording area, and terminator information, and the header makes identification of continuous recording information. Wherein each entry provides information on the associated continuous recording area, and a terminator indicates the end of the continuous recording information. The method of claim 5, And the header comprises a number of continuous recording areas. The method of claim 6, And the header comprises a number of continuous recording areas that are open for recording. The method of claim 5, And the header comprises a number of continuous recording areas that are open for recording. The method of claim 5, Wherein each entry information includes information indicating whether the associated continuous recording area is the first continuous recording area of the group of continuous recording areas. The method of claim 5, Wherein each entry information includes information indicating whether the associated continuous recording area is a continuous recording area that is open for recording. The method of claim 5, Wherein each entry includes a starting physical sector number in the associated continuous recording area. The method of claim 5, Wherein each entry includes a last recording address (LRA) in the associated continuous recording area. The method of claim 5, Each entry information includes status information of an associated continuous recording area, a starting physical sector number in the associated continuous recording area, and a last recording address LRA in the associated continuous recording area. Record carrier. The method of claim 13, And said status information indicates whether or not the associated continuous recording area is the first continuous recording area in the group of continuous recording areas. The method of claim 3, wherein And when the recording mode is random recording, the data block includes a space bitmap (SBM) indicating a recording state of the recording medium data area. The method of claim 15, The space bitmap SBM includes space bitmap data SBM data, a data pointer indicating space bitmap data, and a length indicator indicating a length of the space bitmap data. Record medium, characterized in that. The method of claim 16, Wherein the data pointer indicates the first physical sector number of the space bitmap data. The method of claim 16, The space bitmap data SBM data includes status information indicating a status of each related recording unit in the data area, wherein the status information indicates whether data is recorded in the related recording unit. The recording medium, characterized in that. The method of claim 18, And the recording unit is a cluster. The method of claim 16, The space bitmap (SBM) further includes format information indicating a format of the space bitmap (SBM). The method of claim 16, The recording medium is a dual layer optical disc, The space bitmap (SBM) further includes recording layer information in which the corresponding space bitmap (SBM) indicates a recording layer. A method of formatting a recordable recording medium once, Receiving an input relating to a desired recording mode of the recording medium; And recording the recording mode information in a temporary disc definition structure in the temporary defect management area. The method of claim 22, And the recording mode is one of a continuous recording mode and a random recording mode. The method of claim 23, wherein And if the recording mode is a continuous recording mode, recording the continuous recording information in the temporary defect management area that provides information about the continuous recording area in the recording medium data area. The method of claim 23, wherein And if the recording mode is a random recording mode, recording a space bitmap (SBM) in the temporary defect management area that provides information on the recording state of the recording medium data area. A method of recording management information on a recordable record carrier, the method comprising: Playing the recording mode information recorded in the temporary disk definition structure in the temporary defect management area; Determining a recording mode of a recording medium from the recording mode information; And recording the recording medium use state information in the temporary defect management area that provides information on the use of the data area of the recording medium storing data from the determination step. The method of claim 26, If it is determined that the recording mode information reproduced in the determining step means a continuous recording mode, the use state information is continuous recording information which provides information on the continuous recording area in the recording medium data area. Way. The method of claim 26, If it is determined that the recording mode information reproduced in the determining step means a random recording mode, the use state information is a space bitmap (SBM) for providing information on the recording state of the recording medium data area. How to record information. A method of recording management information on a recordable record carrier, the method comprising: When an event occurs, the use state information for updating the use state of the recording medium providing information on the use of the record medium data area for storing data, and recording the updated use state information in the temporary defect management area. Management information recording method comprising the step of updating. The method of claim 29, Reproducing recording mode information designating a recording medium recording mode recorded in the temporary disc definition structure in the temporary defect management area; And wherein said updating step updates usage status information according to a format associated with a recording mode specified in said recording mode information. The method of claim 29, And said event is a case where a new recording area is created in the data area. The method of claim 29, And the event is a time when the recording area in the data area is changed to a recorded area. The method of claim 29, Wherein the event is when the recording medium is ejected from the recording medium driver or when the power of the recording medium driver is turned off. The method of claim 29, The use state information is management, characterized in that the continuous recording information providing information on the continuous recording area in the recording medium data area, or a space bitmap (SBM) providing information on the recording status of the recording medium data area. How to record information. A write once recording medium having a data structure for managing a data area of a recording medium, comprising: A plurality of defect lists having different sizes are recorded in the temporary defect management area, each defect list indicating a defect in the data area of all recording layers existing at the time of recording the defect list, and in the temporary defect management area. Records a plurality of temporary disk definition structures having a fixed size, wherein each temporary disk definition structure provides usage status information for each data layer for each recording layer, which exists at the time when the temporary disk definition structure is recorded. Recordable recording medium; A method of recording management information on a recordable record carrier, the method comprising: At least one defect list is recorded in the temporary defect management area, wherein the defect list lists the defects in the data area of all the recording layers, and the recorded defect list is recorded by including the new defect list in the previous defect list. Is recorded to have a different size from the previously recorded defect list, Recording at least one temporary disk definition structure in a temporary defect management area, wherein the temporary disk definition structure provides usage status information about the data area for each recording layer, which exists at the time the temporary disk definition structure is recorded, And the temporary disk definition structure has the same size as the previous temporary disk definition structure. A method of recording management information on a recordable recording medium having a temporary defect management area for recording at least one temporary disc definition structure for providing usage status information of a data area for each recording layer in the recording medium. , And recording the latest temporary disc definition structure for each recording layer into a defect management area of the recording medium. The method of claim 37, wherein And the recording step records the latest temporary disc definition structure for each recording layer one or more times in the defect management area of the recording medium. The method of claim 37, wherein The recording medium includes a first recording layer and a second recording layer, The recording step includes the latest temporary disc definition structure associated with the first recording layer, the latest temporary disc definition structure associated with the second recording layer, the latest temporary disc definition structure associated with the second recording layer, and the first recording layer. A management information recording method characterized by recording successively in the order of the latest temporary disk definition structure concerned. A method of recording management data on a recordable record carrier, the method comprising: Recording a data block in a temporary defect management area, wherein the data block includes a temporary disc definition structure, the temporary disc definition structure indicating a recording mode of a recording medium. A method of reproducing data from a recordable record carrier, the method comprising: Reproduces a part of the data recorded in the recording medium from the data block recorded in the temporary defect management area, wherein the data block includes a temporary disc definition structure, wherein the temporary disc definition structure indicates a recording mode of the recording medium. The data reproduction method. An apparatus for recording management data on a recordable recording medium, the apparatus comprising: A drive for driving an optical recording device for recording data on the recording medium; And a control unit for controlling the drive to record a data block including a temporary disk definition structure indicative of a recording mode of a recording medium in the temporary defect management area.

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