TWI309412B - Write-once optical disc, and method and apparatus for recording management information on the write-once optical disc - Google Patents

Description

1309412 IX. Description of the Invention: [Technical Field] The present invention relates to a write-once optical disc, a method for recording management information of the write-once optical disc, and a method for recording and playing the same Method and device for writing a type of optical disc. [Prior Art] As an optical recording medium, a disc on which high-capacity data can be recorded is now widely used. Among these, recently, a new high-density optical recording medium such as a Blu-ray disc has been developed for recording and storing high-resolution video data and long-time high-quality audio material. Blu-ray discs are next-generation HD-DVD technology and next-generation optical recording solutions, with superior functionality that can store more than the existing D VD data. In recent years, a technical specification for the international standard of HD-DVD has been established. In response to this, after the Blu-ray Disc (BD-RE) standard is being prepared, standards for write-once Blu-ray discs (BD-WO) are being prepared. A method for recording management information has been discussed between multiple standards for write-once Blu-ray discs (BD-WO). This method involves a method of recording information indicating the recording state of the disc, which is one of a plurality of features of the write-once optical disc. Information indicating the state of use of the disc allows a host or a user to easily find a recordable area on the write-once optical disc. 5 1309412 ϊ * In existing write-once discs, information can be referred to in various ways. For example, in the case of the CD series, this information is called a disc; in the case of the DVD series, this information is called the RZone section. Thus, there is a need for a method for efficiently recording management information corresponding to the recording state of the optical disc. And this method must provide standardized information to ensure compatibility with each other. In addition, there is a method of recording management information on a disc, which is suitable for a write-once high-density optical disc that is managed by the user and is suitable for a Blu-ray disc. SUMMARY OF THE INVENTION Accordingly, the present invention is directed to an optical disc and a method and apparatus for managing information for a disc, and in particular, to a method and apparatus for efficiently managing information on recording status of the disc. Significantly mitigate one or more of the problems associated with limitations and shortcomings of related art. It is an object of the present invention to provide a method and apparatus for defining a type of sequential record range (S RR) and for recording information within a plurality of SRRs within a message (SRRI). Another object of the present invention is to provide a method and apparatus for recording SRRI status information such as disc recording status, and for the purpose of performing a sub-write type optical disc, and performing physical entity management thereon, To provide a method and device, which can be used for the self-write-type disc or a high-density warp, which is used for recording as the SRR system for the students and for the film 6 1309412 • k. Originally damaged SRRI. Additional advantages, objects, and features of the invention may be set forth in part in the description which follows. The objectives and other advantages of the invention may be realized and obtained by the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; It is to be understood that both the foregoing general descriptions [Embodiment] Reference will now be made in detail to the preferred embodiments embodiments The same reference numbers will be used throughout the drawings to refer to the same or similar parts. For convenience of explanation, a description of a write-once Blu-ray disc (BD-WO) is taken as an example. In this specification, most of the words are widely used words, and some of the words are selected and used by the inventors, and their meanings will be described in detail in the corresponding descriptions. However, it should not be based on a purely literal meaning, but rather in accordance with the meaning of the words as described in detail, to understand the invention, if such meaning is discussed. When a plurality of areas are formed on a disc and the areas are recorded in a sequential manner, each of the areas is referred to as a "sequential record range (SRR)". SRR is a unit of record (sequential record unit) for sequentially recording user data. An SRR has the size of one or more clusters. "SRR Information (SRRI)" is the name of the information 1309412 used to identify the recording status of a disc. The SRRI is applied to the sequential recording mode of the disc and belongs to one or more SRRs. "Filling" means filling a virtual π sub-record or zero value into an unrecorded area of an SRR, as requested by the user, or under the control of a recording/playback device (Fig. 12). The "session" consists of one or more consecutive SRRs and identifies SRR compatibility for this specification only for playback operations. Fig. 1 illustrates an integral structure of a write-once optical disc such as a BD-WO, and a method for recording information on the management of the disc according to the present invention. The disc shown in Fig. 1 has a single recording layer as an example. However, the present invention is not limited thereto and is applicable to a disc having two or more recording layers. Referring now to Figure 1, the disc includes a lead-in area, a data area and a lead-out area, all of which are located at the recording layer. The import and export areas have a plurality of disc (or 瑕疵) management areas (DMA1 - DM Α 4) for repeatedly storing the same 瑕疵 management information. In the data area, there is provided an internal idle area IS A0 and/or an external idle area OSAO, thereby replacing the ambiguous area. It is known that a rewritable optical disc does not possess or does not require a large amount of DMA because the DMA can be repeatedly written and wiped, even if the size of the disc D Μ A is limited. However, this is not the case for a write-once disc like a B D - W Ο. Since the write-once optical disc can no longer be recorded on the recorded area, the write-once optical disc requires and has a large management area. In order to store management information more efficiently, the management information is temporarily stored in a temporary disc management area (TDMA) in the write-once optical disc. When the disc is finally finalized/closed, the management information stored in a final/latest TDMA is transferred to a DMA for more permanent storage. That is, as shown in Fig. 1, the disc contains two TDMAs: TDMA0 and TDMA1. The TDMA 1 is configured within the lead-in area and has a fixed, non-variable size. The TDMA 1 is configured in the external idle area Ο S A 0 and has a size that can vary depending on the size of the idle area. The size P of the TDMA1 can be, for example, P = (N * 256) / 4 clusters, where N is a positive integer, which is approximately one quarter of the size of the entire outer idle area 〇SA0. In each TDMA0 and TDMA1, a temporary 瑕寐 list (TDFL) information and a temporary disc definition structure (TDDS) information (TDFL + TDDS) can be recorded in a recording unit (ie, in the case of a BD-W0). The next is a cluster) ' or SRRI and TDDS information together (SRRI + TDDS) are recorded in one recording unit as shown. The SRRI is recorded when a sequential recording mode is used, and the S B Μ (space bit map) is recorded when a random recording mode is used. At each update time, (TDFL + TDDS) or (SRRI + TDDS) is recorded to the TDMA in the size of one cluster. In the example of FIG. 1, a TDFL and a TDDS are recorded in a cluster of the TDMA0. An SRRI and a TDDS are recorded in the next cluster of the TDMA0, and an SRRI and a TDDS are used. Recorded in the next cluster of TDMA0 and so on. If a region appears in the data area, a process is performed to replace it with the idle area. The TDFL is responsible for managing this processing according to the queue 1309412. In the case of a single layer disc, the TDFL can be recorded by the size of one cluster to four clusters depending on the size of the list. SRRI is a recorded or unrecorded information for a particular area of the disc. The S RRI can be widely used when the disc has a continuous recording type. That is, in the case where the disc is recorded in a sequential or incremental recording mode, the SRRI can be usefully applied. In addition, the TDDS information is typically recorded on the last segment between the 32 segments within one of the clusters of the management area. The information for general management and plague management of the disc is recorded as part of the T D D S information, and when the management information is updated within the TDMA, the TDDS information is usually always recorded last. SUMMARY OF THE INVENTION The present invention is directed to a method of generating and recording disc recording status information, which is applicable to new high density optical discs such as BD-WO. In the present invention, the SRRI is utilized as the disc recording status information, and various types of SRRs are defined, as shown in Figs. 2A to 3E. The details of the SRRI will be explained with reference to Figs. 5A to 6C. The present invention also defines and distinguishes between different types of SRRs that are formed on a disc and utilizes such to record and play the disc. A method for newly defining SRR types and establishing information for different SRR types will also be detailed. Figures 2A through 2D illustrate different types of open SRR for the write-once optical disc (i.e., a BD-WO) in accordance with the present invention. An open SRR is an SRR in which data can be recorded. If the SRR is recordable, the SRR has a "second writable address (NWA)". Thus, the open SRR is an SRR with NWA. An SRR that does not have an NWA and is not recordable is 10 1309412 % ι» is called a closed SRR. The closed SRR will be described below with reference to Figures 3A through 3E. In more detail, Figure 2A shows a non-visible SRR, which is an open SRR. The non-visible SRR is typically formed on the outermost section of a disc or an initial black empty disc and represents an unrecorded area. In other words, only the start address of the non-visible SRR is defined, and the end address of the non-visible SRR means the end of the user profile. Since no data has been recorded, the "Last Recorded Area (LRA)" has a zero value, and the NWA has the same value as the start address of the non-visible SRR. Figure 2B shows a non-complete SRR, which is another type of open SRR. The non-complete SRR is an SRR that is partially recorded in the non-visible SRR of Figure 2A. In other words, only the start address of the non-complete SRR is defined, and the end address of the non-complete SRR means the end of the user profile. However, since the data is partially recorded in the non-complete SRR, the LRA of the non-complete SRR represents the last address in which the normal user data is recorded, and the NWA is the next address of the LRA from the non-complete SRR. That is, the NWA is the first PSN of the next available unrecorded cluster within the associated SRR. In the open SRR, if the SRR is partially recorded, it will be associated with the padding process shown in Fig. 2B to explain in detail the relationship between the LRA and the NWA. At a lower portion of Fig. 2B, an enlarged view of a portion of the dashed dotted square of the figure is presented. In other words, the LRA means an area in which user data is actually recorded. If the user profile is recorded on a certain segment within the cluster 11 1309412 containing the two segments, the physical segment number (PSN) on which the user data is recorded is the SRR. LRA, the female show. However, since the basic recording unit of the Blu-ray disc is an NWA representing an additional recordable area, it will be the P S N of the trailing section. Thus, if the data is recorded in the cluster and the recording process is completed (i.e., the sequential recording process ends), the invention fills the remaining unrecorded segments with dummy data. The remaining unrecorded segments of the set are padded as shown, with zero user data being recorded, and the padding process described in the last segment of the cluster is not necessary. Figure 2C shows a hole SRR, which in turn is another SRR. The void SRR is generally not formed at the disc and is typically at a central section to record data, as opposed to the non-visible SRR and non-complete SRR of Figure 2B. Change one of the hosts or users to make an SRR, but it is not yet in the case of this data. Since the hole SRR has a start address and has not been recorded, the LRA of the hole SRR has - and the NWA has a start address of the hole SRR. The 2D picture shows a part of the record SRR, which is another SRR. . This part records the SRR as an empty space in Figure 2C: Partially recorded SRR. Thus, the portion records the SRR address and an end address. Since the SRR internal data is recorded in the portion, the LRA of the portion recording SRR represents the last address of the record, and the NWA is clustered from the second block of the corresponding segment 7 of the LRA, so clustered Some values on the header will be based on this value, for example. If all, then the open outermost area of the type is obviously the same as the 2A, which is the value on the S R R record and the end bit - "zero" value. One type of opening; with the beginning of the SRR, there is a normal data "write address". 12 1309412 In the open SRR of the 2D picture, if the SRR is partially recorded, then in the 2D picture The enlarged view of the dotted line portion is shown in the relationship between the LRA and the NWA in relation to the padding process. Since it is the same as that described in FIG. 2B, a detailed description of this feature is omitted here. Thus, reference is made to the 2A. To the 2D map, the open SRR of the present invention is classified as an unrecorded open SRR (Fig. 2A and 2C) and a partial recorded open SRR (2B and 2D map). These portions record open SRR (2B and 2D) Figure) can be classified into a filled open SRR after LRA, and an unfilled open SRR. According to the present invention, the total number of open SRRs at any given time is limited to one within the write-once optical disc. The preset number is because there is a management difficulty if the number of open SRRs is extremely high. For example, the total number of open SRRs on the disc can be up to sixteen in the BD-WO of the present invention. The "Open SRR List" field in the SRRI header And the "Open SRR Number" block to refer to the information on the location and number of the open SRR. The "Open SRR List" field and the "Open SRR Number" block in the SRRI header will be described later when the SRRI structure is discussed with reference to Figures 5 through 6C. Figures 3A through 3E illustrate different types of closed SRR for a write-once optical disc such as a B D - W 根据 in accordance with the present invention. A closed SRR is an SRR in which data cannot be recorded (ie, as user data). If the SRR cannot be recorded, the SRR does not have an NWA. The closed SRR can be established because the SRR is fully recorded. At the same time, even if there is a recordable area in the SRR, the SRR can be closed by a user or host by a closed 13 1309412 command to establish a closed SRR. In particular, Figure 3A shows a hole SRR' which is a closed SRR type. The hole SRR is an open hole SRR (Fig. 2C), which is closed by a closed command, and no user data is recorded here. However, Figure 3A shows a closed hole SRR, and Figure 2C shows a hole empty SRR. Figure 3B shows a portion of the recorded SRR, which in turn is another type of closed SRR. Part of Figure 3B records the SRR of the Open Section of Figure 2D, which is closed by a closed command and does not record any user data. Thus, Fig. 3B shows a closed portion recording SRR, and Fig. 2D shows an open portion recording SRR. Figure 3C shows a complete SRR, which in turn is another type of sealed SRR. The complete SRR is an SRR in which the user data is completely recorded in the SRR or is completely filled with dummy data. A complete SRR will exist between many closed SRRs. Figure 3D shows a closed portion recording SRR, which in turn is another type of closed SRR. The partial record SRR of the 3D diagram is an SRR, which, when the open portion of the 2D map is closed, records the SRR, and is filled in the LRA with a virtual π sub-data in a recordable area. Here, the S R R may have all recordable areas or only a part of the recordable areas (for example, one or more clusters) after the LRA or NWA can be filled with dummy data to serve as padding data. In addition, when some areas are padded, a specific character code of the AS CII character can be recorded as the padding data, and the dummy data is recorded, thereby representing that the SRR is closed. In this case, the character is coded from the specific character code of the information to be filled, and the corresponding SRR is closed. . Figure 3E shows a hole SRR, which is a letter. The hole SRR of the 3E diagram is an SRR. When the S hole is SRR, it will be followed by its LRA and can be supplemented with specific dummy data. Closed. All recordable areas or only domains (e.g., one or more clusters) after the LRA or NWA can be filled to fill the data with dummy dummy. In addition, when some areas are filled with a specific character code of ASCII characters to record the dummy data, the representative of the SRR is used as the seal to be used as the specific character code of the padding data. Yuan to indicate that a corresponding SRR is indeed closed.

If the closed SRR of Figures 3D and 3E is complete and the end address is reached, then the 3D and 3E diagrams are closed to the same SRR of the complete SRR of Figure 3C. In the process of determining the closed SRR type, when the open SRR is changed to a closed SRR, the definition is used to distinguish between the unrecorded row(s) that close the SRR (3A and 3). B)), and filling and arranging the unrecorded remaining area (3D and 3E In addition, in the present invention, when an SRR is closed, it is not filled, or it is closed with specific padding data. The SRR considers that the Blu-ray disc passes through the SRR and is only of the "CLSD" closed SRR type. In the open recording area of the 3rd and 2Cth drawings, the SRR is recorded in the part of the recordable area. When making a supplement, you can record a supplemental data^ instead of 3. In this case, the word "CLSD" is filled with the virtual sub-data SRR as described above, in the present invention by a closed command, etc. The closed SRR is passed through the remaining area without closing the SRR (multiple map). The SRR can be closed and then filled for playback in the same family 15 1309412 _ i series, or if the unrecorded area Compatible with one disc for filling. One recording/playback The device (i.e., as shown in Fig. 4) can selectively fill the disc, thereby further ensuring freedom of design of the recording/playback device. When the disc is filled, one of the recording/playback devices is recorded/ The playback unit (i.e., component 10 in Figure 14) can automatically record specific data, so that component 10 receives specific data from a controller and can solve the time problem in the case of padding. And FIG. 4B illustrates an example of performing identification information padding processing when the dummy dummy data is separately filled to a closed record SRR and an open SRR of a write-once optical disc according to an embodiment of the present invention. When the SRR is opened, the padding process may be performed on the open SRR. However, the command may not be closed to the SRR to perform the processing on an open SRR (ie, as in the case of the 2B and 2D pictures). Next, a padding process is performed to terminate the sequential recording process. That is, the 4A picture is associated with the 2B or 2D picture, and the 4B picture is associated with the 3D or 3E picture. In particular, the 4A picture Show one of the true The real user data is recorded on only a part of the cluster, and in the case of an open S RR, the remaining area of the cluster is filled with dummy data. Figure 4A shows the padding identification information. "Filling the flag", which is used to distinguish between a segment in which the real user data is recorded and a segment in which the dummy data is filled, and is set as a control flag in the corresponding cluster. There are 32 padding flags, each of which corresponds to one of the 32 segments of each cluster of S RRs. 16 1309412 I 4 is as shown in Figure 4A. 0 - Area 2 9 is the area in which the user data is recorded, so the padding flag of the section is set to a certain value, that is, "〇b", thereby indicating that the corresponding section is not A fill process occurs. On the other hand, since the section and the section 31 are filled to fill the area of the data, the padding flag of each of the areas is set to a value, that is, "1 b", thereby indicating that A padding process occurs in the corresponding section. In this example, the LRA represents the location of the segment 29 (PSN). Thus, the optical recording/playback device can decode a cluster containing the LRA, read the padding flag corresponding to each of the segments, and then correctly identify the padded dummy data in the cluster. Segment. Figure 4B shows that in the case of enclosing the SRR, a particular cluster of recordable areas within an SRR is completely filled with dummy data. The figure shows the padding identification information, "filling the flag", which is used to distinguish between a closed and unfilled SRR and an SRR that is closed after being filled, and is set as the control flag in the corresponding set. That is, as shown in FIG. 4B, in this example, since the sector 0 - the area 3 1 is an area that is completely filled with dummy data, the padding flag of each of the 3 2 sections is set to some A value, such as "1 b", thereby indicating that the corresponding segments are filled. Therefore, the optical recording/playback device can decode a cluster having padding identification information (padding flag) as described above, read the padding flag corresponding to each of the segments, and then correctly recognize the All segments within the cluster are filled with dummy data. The segments are each in the 30 segment. The 4B of the 5th zone is prepared by the segment. 17 1309412 In other words, Figure 4A is related to the sequential record terminated on the disc, and Figure 4B is related to the closed-SRR. Figure 4A shows that when the sequential record is terminated, all remaining segments in the relevant cluster are filled with dummy data. Each padding flag corresponds to each segment of the cluster and is set to "1 b" if the corresponding segment is indeed padded. In the case of Figure 4A, the padding process occurs once in one segment. On the other hand, in the case of Fig. 4B, when the SRR is closed, one or more clusters (one cluster at a time) are filled. For a clustering padding process, all 32 matching flags corresponding to 32 segments of the cluster set are set to '1 b', thereby indicating that the cluster set is filled, that is, as shown in FIG. 4B. Shown in . Figures 5 through 6C illustrate an SRRI structure in accordance with the present invention, as well as information incorporated into the SRRI. In particular, Figure 5 illustrates the overall structure of an SRRI. The SRRI contains one or more SRRs and provides management information for the disc recording status. The SRRIs are recorded in (multiple) TDMAs (i.e., TDMA0) in the disc structure of Figures 1 and 5. That is, as shown in Fig. 5, each SRRI 60 within a TDMA is composed of three parts: a header 50, an SRR item list 30, and an SRR list terminator 40. This header 50 identifies the SRRI. The SRR item list 30 represents the recording status of each of the corresponding SRRs. The SRR list terminator 40 represents the end or termination of the SRRI. The header is located at the header of the SRRI and contains an "SRRI Structure ID" field 51, an "Open SRR List" field 52, an "SRR Item Number" 53 and an "Open SRR". The field number 54, due to 18 1309412, can check the overall SRR item content before reading the SRR item list. Here, the "SRRI Structure ID" field 51 can recognize the SRRI. The "open SRR list" block 52 indicates the location (identification data) of the open SRR associated with the corresponding SRRI, and will be described in detail later with reference to FIG. 6C. The "SRR Item Number" field 53 indicates the total number of SRRs associated with the SRRI 60. The "Open SRR Number" field 54 represents the total number of open SRRs. After the header 50, a list of multiple SRR items (or SRR item list) 30 is recorded within the SRRI. After the last SRR entry, the end of the SRRI will be labeled with the SRR list terminator 40. And if the SRRI has a variable size, the SRR list terminator 40 has the meaning of indicating the information of the corresponding SRRI end position. Accordingly, as the disc management information, the SRRI is composed of the header 50, the SRR item list 30, and the SRR list terminator 40. Whenever an update is made, all such information is recorded in batch mode. Figure 6A illustrates an example of an SRR item list 30 recorded in an SRRI in accordance with the present invention. That is, as shown in Fig. 6A, the SRR item list 30 is composed of one or more SRR items 35. Each of the SRR items 35 carries information about an SRR on the disc (identified by the SRR number), has a size of eight bytes (64 bits), and represents a record of the corresponding SRR. status. Each SRR item 35 includes a status field 3 1 (state 1) for storing the status of the corresponding S RR, a start address field 32 for storing the start address of the corresponding SRR, and another use. a status field 33 (state 2) for storing the status of the corresponding SRR, with 19 1309412 and a last recorded address (LRA) of the LRA for storing the corresponding SRR, 3 4 (ie, stored in The end address of the user data in the S RR). In general, the corresponding SRR start address in the start address field 32 is represented as a physical sector number (PSN). According to a specific embodiment, the first four most significant bits (b63-b60) of the 64 bits of the SRR entry 35 are assigned to the first state stop 3 1, the second of the S RR entries 3 5 8 bits (b 5 9-b 3 2 ) are allocated to the start address block 3 2, and the next 4 bits (b 3 1 -b2 8) of the SRR item 35 are assigned to the second state block Bit 3 3, and the last 28 bits of the SRR entry 35 are assigned to the LRA field 34. Figure 6B illustrates an example of a Srr item 35 recorded in the SRR item list 30 in accordance with the present invention. The "Status 1" block 31 is used to store information identifying whether any padding processing is performed within the corresponding S R R . The "Status 2" block 3 3 is used to store information identifying whether the corresponding SRR is the beginning of a session. That is, as shown in FIG. 6B, among the four leader bits assigned to the "state i" field 3i, one bit is used to store whether a data has been identified to fill the SRR to fill the data. Fill the identification information r p_flag". The other two bits of the four leading positions are reserved for any specified changes. It should be noted that the padding identification information "Ρ-flag" recorded in the SRR item is similar to the padding identification information "Padding_flag" interpolated with reference to Figs. 4A and 4B. However, these have different purposes. If a particular SRR is eventually filled, the P_flag is recorded in the srr 20 1309412 entry, thereby directly indicating that the corresponding SRR is once filled SRR. Thus, the optical recording/playback apparatus (Fig. 12) can easily check whether the corresponding S RR is indeed filled by checking the P_flag recorded as the management information in the SRR item. Thereafter, the optical recording/playback device decodes the corresponding cluster set (SRR) as previously described with reference to FIGS. 4A and 4B, and reads the Padding_flag value corresponding to each segment of the SRR from the cluster. Therefore, the optical recording/playback device can determine how many SRRs are filled after its LRA. In the example of Figure 6B, the first bit (31a) of the "state 1" block 3 1 carries the P-flag, and the remaining three bits (31b) of the block 31 are Reserved. If P_flag = lb, this means that the corresponding SRR is once filled with the SRR (i.e., the SRR has at least some padded portion to fill the data). If P_flag = Ob, this means that the corresponding SRR is an unfilled SRR. The "Status 2" field 33 is configured with 4 bits, and this person loads information as to whether the corresponding SRR is the SRR of the session. A bit payload of the four-bit field 3 3 has a session identification information "S_flag", which can identify whether the corresponding SRR is a beginning SRR of a session. The other three bits of Block 33 are reserved for any specified changes. In this example, the first bit (3 3 a) of the four-bit field 33 stores the S-flag, and the remaining three bits (33b) are reserved. If S_flag = lb, this means that the corresponding SRR is the beginning SRR of a session. If S_flag = Ob, this means that the corresponding SRR is not the beginning SRR of a session. 21 1309412 • One reason for identifying the beginning of a session through the S_flag is to provide compatibility with existing disc architectures, such as DVDs, which are configured with additional areas (such as bounds/bounds) to enable Session. However, configuring additional areas reduces the overall recording capacity of the disc. Accordingly, the present invention overcomes this limitation by providing session identification information (S_flag) in the SRR item 35. Therefore, the session identification information S_flag in the SRR item 35 can be used to easily recognize the session structure of the entire disc without configuring an extra area to store the difference information of the session. For convenience of description of the present invention, the P_flag and the S_flag are described as separate status information, and are stored in separate status fields of an SRR item, but can be stored in the same status bar of the SRR item. Within the bit. The LRA block 34 of the SRR item 35 is a field for recording the end address (LRA) of the user data in the corresponding SRR, and stores the user data recorded in the corresponding S RR ( The end address except for any padding information. Figure 6C illustrates a detailed structure of the "Open SRR List" field 52 of the SRRI in Figure 5, in accordance with an embodiment of the present invention. The information stored in this field 52 is used to determine the location/identification of each open SRR. That is, as shown in Fig. 6C, one or more open SRR numbers are recorded in the "Open SRR List" field 52 as the position information of the open SRR. The two bytes are configured to record an open SRR number identifying a particular SRR. In the present invention, if there are up to sixteen open SRRs on the disc, 22 1309412 will record the locations of the corresponding open SRRs (and thus the open S RR items) through the respective open SRR numbers (identification data) ). Thus, when loading an optical disc having the disc structure of the present invention, the recording/playback apparatus can determine the position of the recordable area (NWA) of the disc in accordance with the open SRR information of the present invention. In other words, the location of the open SRR on the current disc should be known for data recording. Since the information identifying a corresponding SRR, an open SRR, or a closed SRR is not specifically provided in the SRR project, the identification/location of the open SRR is recorded in the header of the SRRI, and may be The access is easy, so that the optical recording/playback device can easily read the SRR items associated with the identified open SRR. Accordingly, only the SRR having the SRR number recorded in the "open SRR list" block 52 is additionally recorded as an open SRR. After that, if the SRR is changed to a closed SRR, the SRR number of the closed SRR is removed from the "open SRR list" block 52, so that the open SRR and the closed SRR can be easily distinguished. A method of updating an SRRI indicating the recording state of the disc in accordance with the present invention will now be described. In particular, a method of opening and closing SRR and duration, filling an SRR with dummy data, and recording SRRI will be described with reference to Figures 7A-1 1B. Figs. 7A to 11B are views for sequentially explaining a method of recording SRRI in accordance with the state of recording of the disc in the write-once optical disc of the present invention. In more detail, the 7A through 11B diagrams sequentially show how different types of SRRs are created on the disc (as shown in Figures 2A through 3E), and how they are performed using a time stream Follow the steps to record the SRRI. These 23 1309412 methods are implemented on, for example, the write-once discs such as BD-WO having the SRR, SRRI, and disc structures discussed in relation to Figures 1 through 6C. Fig. 7A shows the step 1, in which the entire area of the disc is recordable as an initial black empty disc, and the portion indicated by a thick arrow indicates the NWA position. The starting position of the disc is the NWA. Here, there is only a single SRR (SRR #1) on the disc. This is the non-visible SRR shown in Figure 2A. Thus, a session is in the initial state of the disc, and there is only a single open session #1. The disc is a blank disc and the SRRI has not been recorded on the disc. Compared to an underlying recording unit such as an SRR, a session is an upper recording unit and contains at least one SRR. A plurality of sessions can be recorded on the disc, and the disc is referred to as a multi-session disc. Figure 7B shows this step 2, in which the data (i.e., user data) is partially recorded on the blank disc of Figure 7A, but the session #1 has not been closed. Here, there is only a single SRR (SRR #1) on the disc, and this is the non-complete SRR shown in Figure 2B. The session #1 was maintained as the open session. That is, as shown in FIG. 7B, the user profile is recorded in a portion of the non-complete SRR #1, and the unrecorded portion of the SRR #1 (cluster) (ie, the segment(s) ) Fill in with hoarse information. That is, as described above, the padded section of the SRR is represented by "Padding_flag = 1 b", which is recorded in one of the clustered regions of the cluster, that is, in the padding section of the cluster/SRR #1 in. Fig. 7C illustrates a processing procedure for recording an SRRI in the management area of the disc when the disc is in the state of Fig. 7B. For ease of explanation, 24 1309412 shows only a partial portion of all the different components of the disc structure and SRRI structure shown in Figures 1 and 5. For example, although the (SRRI + TDD S) or (TDFL + TDDS) is recorded in each cluster of the TDMA, that is, the TDMA0 of the disc as described above, only the SRRI is displayed in the TDMA0 of the 7Cth diagram. The TDFL and/or TDDS are omitted for the sake of brevity. Further, only the "open SRR list j field 52 and the "SRR item list" field 30 are displayed between a plurality of different seats of the S R RI shown in Fig. 5. The disc recording state of Fig. 7C is a case where only a single open SRR (SRR #1) appears in all the disc regions as in Fig. 7B. As shown in FIG. 7C, when the non-complete SRR #1 is not configured to close the session as shown in FIG. 7B, SRRI #1 (60a) containing the SRR #1 is generated and recorded in Within TDMA0. In the SRRI #1 (60a), the SRR number (SRR #1) of the open SRR #1 is recorded in the "open SRR list_ field 52a. The "SRR item list in the SRRI #1 (60a)" In the field 30a, only one SRR item 35a contained in the SRR #1 is presented. The SRR project 35a (or SRR project 35b - 35p as described later) has the SRR project structure of Figures 6A and 6B as discussed above. In the SRR item 35a, since some parts of the SRR #1 are partially filled, the "P_flag" is set to "lb" as the status information of the corresponding SRR #1. Since the SRR #1 is the start SRR of the open session #1, the S_flag is set to "1b" as the status information of the corresponding SRR #1. Figure 8A shows this step 3 in which a session closure command is received and executed at step 2 of Figure 7B. In response to the session closure order, the area on which the user data is recorded is divided into a separate closed SRR, and a new session is established in the area following the user data record area. For example, as shown in Fig. 8A, the portion of the area where the user data is completely recorded at step 2 becomes the complete SRR #1 (closed S R R)' which constitutes the closed session #1. In addition, the unrecorded area becomes a non-visible SRR #2 (open SRR), which in turn constitutes an open session #2.

Fig. 8B illustrates a processing procedure of the disc recording state (SRRI) belonging to the disc state as shown in Fig. 8A. Since the SRRI is a second record SRRI', the SRRI is referred to as SRRI #2 (60b). The SRRI #2 (60b) is recorded in the TDMA0 after the SRRI #1 (6〇a). In order to record the state of the disc of Figure 8A, since the entire area of the disc has only one open SRR (SRR #2) and only one closed SRR (SR_R # 1), the SRR number of the open SRR #2 will be Recorded in the "Open SRR List" block 52b of the SRRI #2 'and will have the srr and #2&gt; Λ otherwise recorded in the SRRR #2 factory SRR as SRR items 35b and 35c The item list is in the field 30b. The shaded S RR item (ie, 3 5 b) in Figure 8B (and in other figures) indicates that this is a closed SRR project. Therefore, since the user data has not been recorded in the newly established SRR #2, the P_flag of the SRR #2 item (35c) is set to "〇b". Since the SRR #2 is the start SRR of the open session #2, the S_flag of the SRR #2 item (35c) is set to "lb". Fig. 9A shows that the step 4' where the disc is in the state of Fig. 8A additionally retains two open SRRs for newly recorded data. From 26 1309412 # · And, these newly established open SRRs are open voids SRR #2 and #3, and have NWAs marked by thick arrows. Therefore, the open session #2 is composed of holes SRR #2 and #3 and a non-visible srr #4. Fig. 9B illustrates a processing procedure for recording a disc recording state (SRRI) belonging to the disc state as shown in Fig. 9A. Since the SRRI is a third record SRRI', the SRRI is referred to as SRRI #3 (60c). The SRRI #3 (60c) is recorded in the TDMA0 adjacent to the SRRI #2 (60b). In order to record the state of the disc of Figure 9A, since the entire area of the disc has three open SRRs (SRR #2, #3, and #4) and one closed SRR (SRR #1), it will be The SRR number of the open SRR is recorded in the "Open SRR List" field 52c of the SRRI #3. The information about all four SRRs (SRR #1-#4) is recorded in the "SRR Item List" block 30c of the SRRI #3, as in SRR items 35d-35g, respectively. Thus, since the information about the newly established SRRs #2, #3, and #4 is recorded in the SRRI #3 (60c), and the user data has not been recorded in the SRRs #2, #3, and #4 Therefore, the P_flags of the corresponding SRR items 35e, 35f, and 35 are set to "Ob". However, since the SRRs #3 and #4 are not the starting SRR of the open session #2, the SRR #2 is the SRR of the session, so the SRR #2 item 35e, the SRR #3 item 3 5 f and the S_flag of the SRR #4 item 3 5g are set to "lb", "〇b" and "Ob", respectively. Figure 10A shows this step 5, in which the user profile is recorded in the void SRR #2 in Figure 9A and in the non-visible SRR #4. Thus, the first hole SRR #2 is changed to a partially recorded SRR #2, and 27 1309.412 the non-visible SRR #4 is changed to a non-complete Srr #4, however the open hole SRR #3 does not change. The SRR #2 is recorded with user data and is not filled. The SRR #4 is recorded with user data and is also filled with dummy data. In the padded section of the SRR #4, the padding_flag is set to "1 b". Fig. 10B illustrates a processing procedure for recording the disc recording state (SRRI) of the disc state as shown in Fig. 1a. Since the SRRI is a fourth record SRRI, the SRRI is referred to as SRRI #4 (60d). The SRRI #4 (60d) is recorded after the SRRI #3 (60c). In order to record the state of the disc &gt; 1 of FIG. 10A, since the entire area of the disc has three open SRRs (SRR #2-#4) and one closed SRR (SRR #1), it will be opened. The Srr number of the SRR is recorded in the "Open SRR List" block 52d of the SRRI #4 (60d). Information on all four SRRs (SRR #1-#4) is recorded in the "SRR Item List" block 30d of the SRRI #4 (60d) as the SRR item 35h-35k. At this step, the number of the SRR items and the location of the open SRRs are the same as those shown in Figure 9B, however since the user profile is recorded on a particular open SRR, the record opens the SRR The LRA of the item will change and the value of the P_fUg will also change. In other words, information about the recorded SRRs #2 and #4 will be updated. Since the SRR #2 is recorded without the user data, the P_flag of the SRR #2 item 35i is maintained as r 〇b". Since the SRR #4 is recorded as user data and filled, the P_flag of the SRR #4 item 35k is changed to "lb". 28 1309412 Figure 11A shows this step 6, in which the disc receives a session closure command and executes when the disc is in the state of Figure 10A. That is, as shown in Fig. 1 A, before the open SRR is closed, the additional recordable portion of the open SRR, or a portion of the additional recordable portion of the open SRR, is filled with dummy data. That is, as described above, the padding operation is an optional feature. Further, when the padding process is performed, specific data (e.g., "CLSD" as a character code) can be recorded as the padding data as described above. The SRRs #2, #3, and #4, which were previously open SRRs, are changed to a closed portion record SRR #2, a closed hole SRR #3, and a complete SRR #4, which in turn constitute the closed session #2. An additional recordable area is maintained in the SRRs #2 and #3, and a closed command is used to change to a closed SRR. Here, a certain part is filled with dummy data. Thus, all segments within the cluster/SRR that fill the dummy data (i.e., as in Figure 4B) are set to P adding_flag = 1 b. However, even in this case, the LRA recorded in the SRR item still means an end position where the user data is actually recorded. That is, as mentioned above, the dummy data will not affect the decision result of the LRA position locally. The remaining outermost SRR #5 is a non-visible SRR #5, which in turn constitutes a new open session #3. Fig. 11B illustrates a processing procedure for recording the disc recording state (SRRI) of the disc state as shown in Fig. 11A. Since the SRRI is a fifth record SRRI within the management area, the SRRI is referred to as SRRI #5 (60e). The SRRI #5 (60e) is recorded in the TDMA0 next to the SRRI #5 (60d). In order to record the state of the disc of Figure 1A, since the entire area of the disc 29 1309412 has an open SRR (SRR #5) and four closed SRRs (SRR #1-#4), the open SRR will be The SRR number of (SRR #5) is recorded in the "Open SRR List" field 52e of the SRRI #5' and all previous open SRR numbers that will be recorded in the SRRI #4 (eg, SRR # in Figure 10B) 2. #3 and #4) are removed from the current open SRR list 52e. Removing SRR from the "Open SRR List" field means that the SRRs are closed. Information about all five SRRs (SRR #1-#5) is recorded in the "SRR Item List" field 30e of the SRRI #5 as the SRR items 351 - 35p. Since the SRR #2 and #3 are filled with dummy data in response to the closed command, the P_glag of the SRR #2 item 35m and the SRR #3 item 35η is changed to "lb", thereby indicating at least a part. The corresponding SRR is filled to fill the information. Since the LRA of an SRR item is an end position in which the user data is actually recorded, the LRAs of the SRR #2 - 4 have the same value as the previous LRA recorded in the SRRI #4 (60d). . Further, since the user data has not been recorded in the newly established non-visible SRR #5, the P_flag of the SRR #5 item 35p is set to "Ob". Since the SRR #5 is the start SRR of the new session #3, the S_flag of the SRR #5 item 35p is set to "lb". That is, as can be seen from the maps 7A to 11B, the SRRI is information indicating the recording state of the current disc. When the optical disc of the present invention is loaded into the recording/playback apparatus, the recording/playing apparatus should check the latest SRRI (SRRI #5 in the above example) which is recorded in the official area. Since 30 1309, 412 only the most recent SRRI correctly represents the final recording state of the disc, it is therefore possible to check the position of the additionally recorded SRR. Loss 5 Capitalization Newcomer The latest capital is the most popular. However, when the disc is suddenly turned off or the disc is received, the latest SRRI of the disc may not be read correctly. At this point, it is necessary to revert to the final recorded state with the most recent SRRI among multiple undamaged SRRIs. According to the present invention, the SRR is filled in the padding operation when the SRR s should be closed, and the padding can be used to reconstruct the final recording state of the disc even when the recent SRRI on the disc is The same is true for damage. Thereby, the latest SRRI and the current recording status of the disc can be restored. Figures 1 2, 1 3 A and 1 3 B illustrate a method of recording data onto a write-once optical disc in accordance with the present invention. This method estimates the final recorded state of the disc and restores the most recent S RRI of the disc, even when the recent SRRI is compromised. The recording/playing operation can be performed by obtaining the most recorded state from the latest near SRRI. When the corresponding SRRI is judged to be a defective region and the recorded information is not reliable, the SRRI is said to be damaged. If the latest SRRI is damaged, this means that the final recorded state of the disc cannot be obtained from the most recent SRRI. Therefore, the recordable position of the disc cannot be known. In the worst case, the disc itself can no longer be used. The present invention provides a method for correctly restoring the final recorded state of the disc when the most recent SRRI is damaged. In particular, FIG. 2 illustrates a final recording state in which a write-once optical disc of BD-W 0 is restored according to an embodiment of the present invention, and the recording/playback is performed on the 31 1309412 chip. Flowchart of the method of operation. The disc contains the disc structure and the SRRI structure as described above. Referring to Figure 12, if the disc is loaded into an optical recording/playback device, as shown in Fig. 14, it will be read and recorded in the management area (i.e., as TDMA0). The latest near SRRI. Then, it is checked whether the read SRRI is damaged (S10). If the latest SRRI is not damaged, the final disc recording state is obtained from the latest SRRI (S21). Next, with the latest SRRI, only the extra recordable area is recorded and/or the playback operation is performed on the recorded area (S22). Information on these areas can be obtained from the most recent SRRI. On the other hand, if the step S10 determines that the most recent SRRI is indeed damaged, the latest SRRI is determined between the plurality of undamaged SRRIs (S3 1). Then read out this most recent undamaged SRRI (S3 2). The damaged SRRI can be restored using the most recent near-impaired SRRI and the actual recorded state of the disc (S3 3). Step S33 can be an optional step. The additional recordable area is subjected to recording processing and/or playback operation is performed on the recorded area (S3 4). The information on these areas can be determined from the most recent undamaged SRRI and/or the actual recorded status of the disc. After the recording/playing step S 3 4, the newly changed recording state can be recorded as a new SRRI in the management area.

Figs. 13A and 13B illustrate an example of the second step S3 3 of the restoration of the final recording state when the most recent SRRI (SRRI #5 in the example of Fig. 11B) is damaged. For convenience of explanation, the SRRI recording method of the 7A to 1 1 B 32 Ιβ〇9, 4! 2 diagram will be described as an example. That is, as shown in Figure 13A, if the * is in a normal state, then

The SRR·1 #5 (6〇e) becomes the latest SRRI of the disc, however, right. If the SrRI #5 is damaged, the recording/playback device will read the latest SRRI between multiple unseen SRRIs and SRRI #4 (60d). In this example, the bare snippet is in the undamaged SRR! #1一#4 is the latest near SRRI.

SRR1 #5 (6 〇 决定 决定 决定 决定 决定 决定 决定 决定 第 第 第 可 可 可 可 可 可 可 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S The latest SRR information checked by the recording/playing device is the SRRI #4 (60d). However, since the SRRI #5 loads this information, the SRRI #4 does not necessarily load the final recording state of the disc. Next, in order to restore the final recording state of the disc without using the SRRI #5, it is necessary to compare the SRRI #4 with the actual final recording state of the disc. This can be done as follows.

The recording/playback device (i.e., as in Figure 14) checks the location of the (etc.) open SRR and the associated LRA information from the SRRI #4. In the example of Fig. 13A, three open SRRs #2, #3, and #4 can be determined from the "open SRR list" block 52d of the SRRI #4 (6〇d). Then, by accessing the LRA blocks corresponding to the SRR items of the open SRRs from the "SRR Item List" field 30d of the SRRI #4 (60d),

The LRAs are available and are used to identify whether the corresponding SRR is truly an open SRR. For this, only the open SRR identified in the field 52d of SRRI #4 (60d) is examined. Locations recorded as closed SRR are not reviewed. After the open SRR is changed to a closed SRR, the closed SRR 33 ¢09412 cannot be changed back to the open SRR. Therefore, the recovery operation of the final SRR information can be performed by checking whether the (or) SRR each changes to the closed SrR.

In the case of SRR #2 and #3, these are identified as open SRRs in the stop 52d of the SRRI #4 (60d), and the SRRs #2 and #3 are checked to determine That is, after the LRA (identified in the LRA block of the item) observed in Figure 11A, 'whether the preset padding data (such as dummy data) is recorded (actual final disc record status) ). If the padding process is detected, the recording/playing device determines that the corresponding SRR is changed to a closed SRR.

In the case of the SRR #4, the person is identified as an open SRR from the field 52d of the SRRI #4, and the recording/playing device views the SRR #4 to determine in its figure 丨i A Whether the padding data (such as dummy data) appears after the LR A position (actual final disc recording status) ° In the actual final disc recording state, the SRR #4 can be analyzed as an open SRR. At the same time, it can be observed that the area after the LRA position of the SRR #4 is recordable, that is, the area is NWA. Then in the recording/playback device, the recorded area of the original SRR #4 is determined to be a closed SRR (new closed SRR #4), and only the recordable area of the original SRR #4 is analyzed as an open SRR ( New SRR #5). Thus, the content of the damaged SRRI #5 can be reconstructed by using the above analysis result'. Furthermore, 'because the information necessary for the recording operation by the recording/playing device is additionally recordable location information (NWA), the nv/a location associated with the old and new SRR #4 is not changed' and It can thus be used by the recording/playing device. 34 1309.412 Figure 1 3B illustrates the results of the restoration of the most recent SRRI #5 by the processing of Figure 13A as discussed above. This result is based on the final recording status of the actual disc. Thus, the recording/playback device again records the selectively recoverable recent SRRI #5 within the management area (and at this point as the SRRI #6 (60f)), or only for the extra Record the area for recording. The SRRI #6 (60f) contains an "open SRR list" field 52f identifying the SRR #5, and an "SRR item list" block 30f, which respectively correspond to the SRRs #1-#5 SRR project 35q-3 5u. At the same time, even if the restored SRRI #5 is not recorded as SRRI #6, the data record can be recorded from the restored NWA information and the record status, because the change record of the data record of the restored NWA will be recorded. For a new SRRI #6. Fig. 14 is a view showing an optical disk recording/playing apparatus according to the present invention. The disc and/or SRRI structure and method of the present invention as discussed herein can be implemented using the apparatus or other suitable apparatus or system. Referring to FIG. 14, the optical disc recording/playback apparatus includes a recording/playing unit 10, which records and/or reproduces data from/to the optical disc; and a controller, which is To control the recording/playing unit 10. All components of the recording/playback device are operatively coupled together. The controller 20 transmits a command to the recording/playing unit 10 for recording/and/or reproduction of a special recording area on the disc, such as an S RR/session. And the recording/playing unit 10 can perform data recording and/or reproduction on/from the disc according to the command of the controller 20. The recording/playing unit 10 includes an interface unit 12 and a pickup unit 35 1309 {412

11. A data processor 13, a servo unit 14, a memory 15 and a microcomputer 16. The interface unit 12 is in communication with an external device such as the controller 20. The pickup unit 11 can directly record/reproduce data from/from the disc. The data processor 13 receives a reproduction signal from the pickup unit 11, restores a preference signal, modulates a signal suitable for the optical disk, and transmits the signal. The servo unit 14 controls the pickup unit 1 1 to read a signal from the optical disk or record a signal on the optical disk. The memory 1 5 temporarily stores data and various information, including management information as described above. The microcomputer 16 controls the elements of the recording/playing unit 10. Since the recording/playback apparatus shown in Fig. 4 can selectively perform the filling operation, the designer can design the recording/playing apparatus more freely. The recording/playing unit 10 can automatically store specific materials during a padding operation.

The method of recording and playing back data on a disc can be divided into two. The first is the case of Figure 4A to 1 1 B, which involves a method of completely recording data on an open SRR; forcibly filling the remaining area(s) in the cluster containing the LR A And recording the information identifying whether the remaining segment(s) have been padded, or when closing an SRR, determining whether the cluster should be filled and recording the padding identification information according to the padding process. The second is to use the information of the filling of the 1st - 2 3 B map to effectively restore a damaged SRRI. When an SRR is closed, the padding processing of the SRR can be selectively performed. However, if the SRR is padded and then the SRR is closed, the information can be advantageously utilized to recover the 36 1309.412 data. A first optical disc recording/reproduction method according to an embodiment of the present invention will now be described in detail. When a disc such as BD-WO is loaded into the recording/playback device as shown in FIG. 2, the latest SRRI is read as the latest disc management information recorded in a TDMA. . Further, the SRRI header and the (multiple) SRR items recorded in the latest SRRI are read out and temporarily stored in the memory 15 of the recording/playing unit 10. The stored SRRI represents the most recent disc recording status. The open SRR can be identified by the SRRI header information. Through these SRR items, data can be recorded throughout the entire area of the disc, or the presence and location of the unrecorded status and the open session can be checked. At the same time, it can be identified whether the SRR has been filled to fill the information. All such information can be utilized when recording and playing the disc. The data (ie, user data) is then recorded on a particular open SRR. When the data is completely recorded in the open SRR, the unrecorded segments in the cluster containing the LRA are filled with dummy data (eg, based on stability and robustness) and will be filled. The identification information Padding — flag is set to "1 bj. For each padding section, the Padding_flag corresponding to each section is set to "lb". If the sector is not padded, the corresponding Padding_flag is set to "Ob". At the same time, when the SRR item in the SDRRI is updated, the SRR status information P_flag is set to "lb", thereby indicating that at least a certain part of the corresponding SRR is indeed padded. 37 1309412 Furthermore, even in the case where the SRR is closed by the closed command of the controller 20, the microcomputer 16 can select a recordable area (ie, as a cluster) to be closed after being filled or Not filled. In the above case, a designer can design the recording/playing unit 1 to automatically fill the SRR to fill the data and unconditionally close the SRR without the padding command from the controller 20. The above function is referred to as the "auto-fill function" of the recording/playback unit 10. This automatic padding function is more advantageous for shortening the operation time than when the recording/playing unit 10 receives dummy data by a padding command and then fills the SRR thereafter. Further, if the SRR state is changed by the padding process as described above, the Padding_flag can be set to lb in accordance with each padding section. At the same time, the P_flag is set to lb in the corresponding SRR item. This information can be used by different recording/playback devices. Thus, the type and definition of the SRR as defined by the present invention can be provided, and a method of recording the SRRI in accordance with the defined SRR types and definitions. Thus, various recording/playback apparatuses having desired functions can be utilized to access existing discs. Further, a second method of recording and playing back data by restoring the optical disc will be explained. When a disc is loaded into the recording/playback device, the microcomputer 16 can control the pick-up unit 1 1 to read the latest TDMA recorded in the setting management area, such as the corresponding disc. Near SRRI. The microcomputer 16 determines whether the latest SRRI is damaged. If it is determined that the most recent SRRI is indeed impaired, the most recent s RRI may be recovered from a number of undamaged SRRI estimates, i.e., as previously described with reference to Figures 1, 2, 3 A. When the open SRR is changed by the SRR by a closed command, the dummy data to fill the disc is checked, so that the most recent SRRI is restored. And if the restored recent SRRI or the original latest SRRI is lost, the recording/playing unit 10 may open the location of the SRR according to the latest recent check, record the data; and the receiver 20 closes the command; A portion (or the entire region) of one of the additional domains within the open SRR is filled with dummy data; and the SRR has been changed to a closed SRR. In a management area, the disc recording status record is changed as a new (new) SRRI. Here, when the corresponding optical disc is loaded again, the final disc recording state can be accurately checked from the latest one. According to the present invention, a method for recording write-once optical disc information includes defining a new SRR type and a duration type. If the SRR is filled or if the SRR is closed by the padding process, the padding identification information Padding_flag is set locally and recorded in the padding area. The other padding identification information P_flag is recorded in the SRR item. Thus, in a write-once slice having the new entity structure, the management information can be efficiently recorded and managed. When the SRR is complemented and closed, the padding information can be utilized to recover the SRRI. Those skilled in the art will recognize that modifications and variations can be made in the present invention. Therefore, if the present invention covers the present invention and the 13B is closed, it may not be subjected to SRRI as before, and the control record area may not be listed. After the management of the SRRI is opened, the record is This type of CD-ROM is modified and changed in accordance with the damages, and the scope of the patent application and its equivalent items are included in the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0009] The accompanying drawings are included to provide a further understanding of the invention The detailed description explains the principles of the invention. In each of the drawings: FIG. 1 illustrates an overall structure of a secondary write type optical disc, and a method for recording management information on the write-once optical disc according to the present invention; FIGS. 2A to 2D illustrate the present invention. Different types of open SRR of the write-once optical disc of the invention; FIGS. 3A to 3E illustrate different types of closed SRR of the write-once optical disc according to the present invention; FIG. 4A illustrates a case where the dummy dummy data is filled to one An example of the padding processing of the identification information is performed when the SRR of the write-once optical disc according to the present invention is closed; FIG. 4B illustrates an opening of the write-once optical disc according to the present invention when the dummy dummy data is filled. In the case of S RR, an example of the padding processing of the identification information is performed; FIG. 5 illustrates the overall structure of the secondary write type optical disc, and a method for recording SRRI as the management information of the disc according to the present invention; FIG. A structure of a list of 40 1309412 SRR items recorded in an SRRI according to the present invention; FIG. 6B illustrates a SRR item recorded in the SRR item list of FIG. 6A according to the present invention. Example of FIG. 6C illustrates an example of an open SRR block list structure of an SRRI according to the present invention; FIG. 7A to FIG. 1B illustrates a disk in accordance with the present invention in accordance with a write-once optical disc The film records the state to record the SRRI processing program; FIG. 12 is a flow chart illustrating a method for utilizing the SRRI of the write-once optical disk when the latest SRRI is damaged according to an embodiment of the present invention 1 3 A and 1 3 B illustrate a method of restoring the most recent SRRI in a write-once optical disc in accordance with an embodiment of the present invention; and FIG. 14 illustrates a method in accordance with the present invention DETAILED DESCRIPTION OF THE INVENTION A recording/playing device for a write-once optical disc. [Main component symbol description] 10 Recording/playback unit 11 Pickup unit 12 Interface unit 13 Data processor 14 Servo unit 15 Memory 16 Microcomputer 20 Controller 41 1309412 30 SRR item list 3 1 Status field 3 1a Bit 3 1b bit Element 3 2 Start Address Field 33 Status Field 3 3a Bit 33b Bit 34 Last Record Address (LRA) Field 35 SRR Item 40 SRR List Terminator 50 Header 5 1 "SRRI Structure Identification | J Code Field 52 "Open SRR List" field 53 "SRR Item Number"

54 Open SRR Number field 60 SRRI 42

Claims (1)

1309412 X. Patent application scope: 1 · A method for recording management information on a recording medium containing a sequential recording unit composed of at least one basic recording unit, the primary recording unit being composed of a plurality of sections Composition, wherein the method comprises the following steps: sequentially recording the user data from a writable location in the sequential recording unit according to the direction of increasing the address; when the last recorded position of the last basic recording unit does not conform to the final basic When the boundary of the unit is recorded, the remaining unrecorded segments of the last recording unit are filled with the padding data; and the recording identifies which part of the at least one basic recording unit is filled with the padding identification information, the padding identification information It consists of a plurality of filled flags, and each of these filled flags belongs to each of these sections. 2. The method of claim 1, further comprising the step of: removing a sequential recording unit identification data from an open sequence record information when the sequential recording unit is closed. 3. The method of claim 2, wherein the method further comprises the steps of: filling the data from the newly writable location to fill one or more to include the base step element Step base 43 1.309412 The recording unit; and recording the padding identification information to indicate that the one or more basic recording units are filled. 4. The method of claim 1, wherein the writable location in the sequential recording unit is moved to a new writable location, the new writable location being a neighboring basic recording unit A first section. 5. A method for recording management information on a recording medium containing at least one recording unit, the method comprising the steps of: sequentially recording data in the direction of increasing the address within 7L of the at least one record, When terminating the sequential record processing of the material, filling the remaining unrecorded portion of the last recording unit with the padding data; and recording the padding identification information on the recording medium> the padding identification information identifying the at least one recording unit What part of it is filled. 6. The method of claim 5, wherein each of the recording units is a cluster, and in the filling step, all remaining unrecorded segments of the last cluster are filled to fill the data. 7. The method of claim 6, wherein in the recording step, the padding identification information comprises a plurality of padding flags, each of which is assigned 44 1309412 to a segment of the cluster, and Whether the assigned area is filled or not, the padding flag is set to a value. 8. The method of claim 6, wherein in the filling step, the filling process is performed in one segment at a time. 9. The method of claim 7, wherein each cluster is composed of 32 segments, and thus there are 32 matching flags respectively corresponding to 32 segments of the cluster. Standard. 10. The method of claim 5, wherein the padding identification information is recorded in a management area of the recording medium. 11. The method of claim 5, wherein in the filling step, the filling data is zero. 12. A method for recording management information on a recording medium having at least one sequential record range (SRR), each SRR being comprised of at least one cluster, the method comprising the steps of: recording user data in Within an SRR; and when the recording of the user data is terminated, the padding data is used to fill the remaining unrecorded area of a last cluster in the SRR. 45 1309412 1 3. The method of claim 12, wherein in the filling step, the filling data is zero. 1 4. The method of claim 12, wherein in the filling step, all remaining unrecorded segments of the last cluster are filled to fill the data. 15. A recording medium comprising: a sequential recording unit, wherein the sequential recording unit is composed of at least one basic recording unit, and the at least one basic recording unit is composed of a plurality of segments; a user profile, The user data is sequentially recorded from a writable location in the sequential recording unit in the direction of increasing the address; and the padding data does not conform to the last recorded position of the last basic recording unit. At the boundary of the last basic recording unit, recorded in the remaining unrecorded section of the last basic recording unit; and a padding identification information, the padding identification information identifying which part of the at least one basic recording unit The padding identification information is composed of a plurality of padding flags, and each of the padding flags belongs to each of the segments. 16. For the recording medium described in claim 15 of the patent application, further package 46 1.309412 includes: a padding data that is recorded from the new writable location and recorded in one or more basic recording units And filling the identification information, the padding identification information is used to indicate that the one or more basic recording units are filled. 1. The recording medium of claim 15, wherein the writable position in the sequential recording unit is moved to a new writable position, the new writable position being an available neighboring basic Recording the first section of one of the units. 18. A recording medium comprising: at least one recording unit; a data sequentially recorded in the at least one recording unit in a direction in which the address is increased; and a filling of the data, the filling data being terminated When the sequential recording processing of the data is recorded, the remaining unrecorded portion of the last recording unit is recorded; and a padding identification information is recorded on the recording medium, and the padding identification information identifies the at least one What part of the recording unit is filled. 19. The recording medium of claim 18, wherein each of the recording units is a cluster, and all remaining unrecorded areas 47 1309412 of the last cluster are filled to fill the data. 20. The recording medium of claim 19, wherein the padding identification information comprises a plurality of padding flags, each of which is assigned to a segment of the cluster, and according to whether the assigned area is The padding flag is set to a value, depending on the padding. The recording medium according to claim 19, wherein the filling processing is performed in one section at a time. 22. The recording medium of claim 19, wherein each cluster is composed of 32 segments, and thus 32 2 corresponding to 32 segments of the cluster respectively Fill the flag. 23. The recording medium of claim 18, wherein the padding identification information is recorded in a management area of the recording medium. 24. The recording medium of claim 18, wherein the padding data is zero. 2 5 . A recording medium comprising: at least one sequential recording range (SRR), each SRR is composed of at least one cluster; 48 1309412 a user data, the user data is recorded in the SRR Within one of the specific SRRs; and a padding data that is used to fill the remaining recorded area of a last cluster within the particular SRR when terminating the user profile. 2 6. The recording medium of claim 25, wherein the data is zero. 27. The recording medium of claim 25, wherein all remaining unrecorded segments of the cluster are filled with the padding data 2 - 8 as a base containing at least one basic a device for recording management information on a recording medium of a sequential recording unit of a recording unit, the basic recording unit being composed of a plurality of segments, the device comprising: a recording/reproduction portion, which is incremented by address Directionally, the recordable user data is written from one of the sequential recording units to fill the basic information when the last recorded position of one of the last basic recording units is not the boundary of the last basic recording unit Recording the remaining unrecorded sections of the unit; and storing the padding information by recording which part of the at least one basic recording unit is filled, the padding identification information is composed of a plurality of padding flags, etc. Each person belongs to each of these sections. The lesser one has not been filled and the final composition is at least sequential; it is in accordance with the final identification and identification. 49 L309412 29. The device of claim 28, wherein the writeable position in the sequential recording unit Moved to a new writable location, the new writable location is a first segment of one of the adjacent basic recording units available. 30. A device for recording management information on a recording medium, the medium comprising at least one recording unit, the device comprising: a recording/reproduction portion, wherein the data is sequentially updated in a direction of increasing the address Recorded in the at least one recording unit; the method is to fill the remaining unrecorded portion of the last recording unit with the padding data when the sequential recording of the data is terminated; and to record the padding identification information On the recording medium, the padding identification information identifies which portions of the at least one recording unit are filled. 3 1. A device for recording management information on a recording medium having at least one sequential recording range (SRR), each SRR being composed of at least one cluster, the device comprising: - a recording/reproduction portion, In order to record the user data in an SRR, and to process the record of the user data, the padding data is used to fill the remaining unrecorded area of the last cluster in the SRR. 50