Source: https://patents.google.com/patent/AU2004256685B2/en
Timestamp: 2019-12-09 02:29:44
Document Index: 752805209

Matched Legal Cases: ['art.\n4', 'art 5', 'arts 20', 'art 15', 'art 10', 'art 20', 'art 10', 'art 20', 'art 10', 'art 10', 'art 20', 'art 10', 'art 10', 'art 20', 'art 10', 'art 10', 'art 20', 'art 20', 'art 0']

AU2004256685B2 - Write-once optical disc, and method and apparatus for recording management information thereon - Google Patents
Write-once optical disc, and method and apparatus for recording management information thereon Download PDF
AU2004256685B2
AU2004256685B2 AU2004256685A AU2004256685A AU2004256685B2 AU 2004256685 B2 AU2004256685 B2 AU 2004256685B2 AU 2004256685 A AU2004256685 A AU 2004256685A AU 2004256685 A AU2004256685 A AU 2004256685A AU 2004256685 B2 AU2004256685 B2 AU 2004256685B2
AU2004256685A
AU2004256685A1 (en
2003-07-15 Priority to KR1020030048279A priority Critical patent/KR20050009031A/en
2003-07-15 Priority to KR10-2003-0048279 priority
2004-07-09 Application filed by LG Electronics Inc filed Critical LG Electronics Inc
2004-07-09 Priority to PCT/KR2004/001701 priority patent/WO2005006316A1/en
2005-01-20 Publication of AU2004256685A1 publication Critical patent/AU2004256685A1/en
2009-10-01 Publication of AU2004256685B2 publication Critical patent/AU2004256685B2/en
230000003287 optical Effects 0 claims description title 57
1 WRITE-ONCE OPTICAL DISC, AND METHOD AND APPARATUS FOR RECORDING MANAGEMENT INFORMATION THEREON Technical Field The present invention relates to a recording medium, and a method and 5 apparatus for recording management information on the recording medium. Background Art As an optical recording medium, optical discs on which high-capacity data can be recorded are widely being used. Among them, a new high-density optical disc, for example, a Blu-ray disc, has been recently developed for recording and 10 storing high-definition video data and high- quality audio data for a long term period. The Blu-ray disc is the next generation HD-DVD technology and the next generation optical recording solution, and has an excellent capability to store data more than an existing DVD. Recently, a technical specification of 15 international standard for HD-DVD has been established. The Blu-ray disc, one of the international standards for HD-DVD, uses a 405nm blue laser, which is much denser than a 650nm red laser used in the existing DVDs. In addition, compared to the existing DVDs, a larger quantity of data can be stored in the Blu-ray disc having a thickness of 1.2 mm and a 20 diameter of 12 cm. Generally, the Blu-ray disc has an optical transmission layer with the thickness of 0.1 mm.
WO 2005/006316 PCT/KR2004/001701 2 Recently, a standard relating to the Blu-ray disc is being developed. Following a rewritable Blu-ray disc (BD-RE), various standards for a write-once Blu-ray disc (BD-WO) are being prepared. Specifically, among the standards for the BD-WO, a method for recording 5 management information has been discussed. This method involves a process of recording information indicating the used status of the write once optical disc. The information indicating the used status of the disc is information indicating a recorded status of the disc in order to allow a host or a 10 user to easily find a recordable area on the write-once optical disc. In the existing write-once optical disc, this information is called differently. For example, in the case of CD series, the recorded status indicating information is called track information. In the case of DVD series, the recorded status indicating information is called an RZone, a fragment 15 or a recording range. FIG. 1 shows the structure of a DVD-R according to a related art. As shown in FIG. 1, the management information of the disc is recorded in a recording management data (RMD) area. The information indicating the used status of the disc is managed using RMID Fields 4 to 12 of the 20 recording management area (RMA). There are an open RZone, an invisible RZone and a close RZone. If the host or the like requests a recordable location to additionally record data on the DVD-R, the driver checks the recorded status indicating information (RZone information) recorded in the above 25 described manner and checks last recorded addresses LRAs of first and second open RZones and transmits generally the location "LRA+1" as 3 the recordable location to the host. The recordable location is called a "next writable address" (NWA). Due to the transmitted NWA information, the host or the like is allowed to validly perform the additional recording on the disc. However, since the existing DVD-R and other disc types are different from a 5 write-once Blu-ray disc (BD-WO) in their physical structure and use environment, the conventional method of providing the management information cannot be applied to the BD-WO. In case of the BD-WO, a driver manages disc defects, but the BD-WO is required to have a special additional area for the driver to manage the defects. The BD-WO, thus, has a complex 10 disc structure and as a result, the method of managing the recorded status indicating information of the DVD-R cannot be used for the BD-WO. Accordingly, there is a need for a method of efficiently recording management information corresponding to the used status of a high density write-once optical disc such as a BD-WO, so that the disc can be accessed easily and used 15 more effectively. And such management information should be structured to ensure compatibility with the overall structure, use and standards of the BD WO. In addition, there is a demand for a method of recording management information on a disc, which can be applied to other write-once high-density optical discs performing defect management, as well as to the above Blu-ray 20 discs. It is not admitted that any of the information in this specification is common general knowledge, or that the person skilled in the art could reasonably be expected to have ascertained, understood, regarded it as relevant or combined it in any way at the priority date. 25 Disclosure of Invention Accordingly, the present invention is directed to a recording medium, and a method and apparatus for recording management information on the recording medium, which substantially obviate one or more problems due to limitations and disadvantages of the related art.
4 Described herein as a preferred embodiment is a write-once optical disc and a method and apparatus for recording management information on the write once optical disc, in which information on the used status of the disc is recorded and managed efficiently. 5 Described herein as a preferred embodiment is a write-once optical disc, and a method and apparatus for recording track information on the disc, in which the track information is recorded as the information on the used status of the disc. The method and apparatus of the present invention are applicable to a write-once optical disc in which physical defect management is performed. 0 Described herein as a preferred embodiment is a write-once optical disc, and a method and apparatus for recording track information, in which session information is recorded without any allocation of an additional physical area within the disc. In addition, the compatibility with the existing reproduction only standard can be secured. 5 Also described herein as a preferred embodiment is a method and apparatus for efficiently updating track information. According to an aspect, the present invention provides a recording medium having at least one recording layer, the recording medium including at least one track where data is sequentially recorded, the recording medium 20 comprising: a session including at least one track; and track information on the at least one recording layer, the track information pertaining to the at least one track and including a track entry list, the track entry list including a plurality of track entries, each track entry 25 pertaining to a track and including a session status field to store session start information indicating whether the pertaining track is a start of the session.
5 Described herein, but not claimed, is a recording medium comprising: at least one recording layer; and at least one SRR entry stored on the at least one recording layer, each SRR entry pertaining to an SRR and including at least one status area, the at least one status area storing therein session start 5 information and being allocated at the corresponding SRR entry excluding beginning bits of the corresponding SRR entry. According to another aspect, the present invention provides a method for recording management information on a recording medium having at least one recording layer, the recording medium including at least one track where data 10 is sequentially recorded, the method comprising: (a) recording a track information onto the at least one recording layer, the track information pertaining to the at least one track and including a track entry list, the track entry list including a plurality of track entries, each track entry pertaining to a track and including a session status field to store session 15 start information indicating whether the pertaining track is a start of a session formed by at least one track. Described herein but not claimed is a method for recording management information on a recording medium having at least one recording layer, the method comprising : (a) recording at least one entry on the at least one 20 recording layer, each SRR entry pertaining to an SRR and including at least one status area for storing therein session start information, each SRR entry being allocated at the corresponding SRR entry excluding beginning bits of the corresponding SRR entry. According to another aspect, the present invention provides an apparatus for 25 recording management information on a recording medium having at least one recording layer, the recording medium including at least one track where data is sequentially recorded, the apparatus comprising: an optical pickup configured to record data on the recording medium; and 6 a microprocessor configured to control the optical pickup to record track information on the at least one recording layer, the track information pertaining to the at least one track and including a track entry list, the track entry list including a plurality of track entries, each track entry pertaining to a 5 track and including a session status field for storing therein session start information indicating whether the pertaining track is a start of a session formed by at least one track. As used herein, except where the context requires otherwise the term 'comprise' and variations of the term, such as 'comprising', 'comprises' and 0 'comprised', are not intended to exclude other additives, components, integers or steps. It is to be understood that both the foregoing general description and the following detailed description of the present invention are WO 2005/006316 PCT/KR2004/001701 7 exemplary and explanatory and are intended to provide further explanation of the invention as claimed. Brief Description of Drawings 5 The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings: 10 FIG. 1 schematically shows a structure of a DVD-R disc according to a related art. FIG. 2 shows an example of different types of tracks of a write-once optical disc applicable to the present invention; FIG. 3 illustrates a structure of a write-once optical disc and a method 15 for recording disc management information on the write-once optical disc according to embodiments of the present invention; FIG. 4 illustrates a method for recording track information on the write once optical disc of FIG. 3 according to a first embodiment of the present invention; 20 FIG. 5 illustrates a method for recording track information on the write once optical disc of FIG. 3 according to a second embodiment of the present invention; FIG. 6 illustrates a method for recording track information on the write once optical disc of FIG. 3 according to a third embodiment of the 25 present invention; FIG. 7 illustrates a method for updating track information on a write- WO 2005/006316 PCT/KR2004/001701 8 once optical disc according to the present invention; and FIG. 8 illustrates a recording/reproducing apparatus for a write-once optical disc according to the present invention. 5 Best Mode for Carrying Out the Invention Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to refer to the same or 10 like parts. Although the most widely used and general terms are chosen, terms arbitrarily chosen by the present inventor(s) are also used. In such cases, the present invention should be understood in view of the meanings of the terms as defined by the inventor(s). In this regard, the 15 present inventor(s) define the term "track" to mean a sequential recording range (SRR) of a write-once optical disc such as a BD-WO, i.e., an area for recording data/information on the disc. As such, "track" and "SRR" are used interchangeable herein and each represents a unit of recording (a recording-unit). Consequently, the term "track 20 information" ('Track-Info") or "SRR information" (SRRI) is defined by the present inventor(s) as a general term that indicates a used status of the write-once optical disc. A session has at least one track/SRR, i.e., at least one recording-unit. The term "session information" is used as a general term for indicating a recorded status of a specific block in order 25 for the compatibility with a reproduction-only standard. The present invention provides a method and apparatus for recording WO 2005/006316 PCT/KR2004/001701 9 track information applicable to a new high-density optical disc. The invention records session information within the track information without any allocation of an additional physical area. In addition, the invention does not limit the number of used open tracks and supports 5 the maximum sixteen tracks. Therefore, compared to the related art in which the maximum two open tracks (in case of the DVD-R, "RZone") exist, this invention utilizes the disc more efficiently and provides an optimum structure of the track information suitable for such disc management. 10 FIG. 2 illustrates different types of tracks on a write-once optical disc such as a BD-WO, which are applicable to the present invention. As shown, the disc is divided into a plurality of tracks. In this example, each of Tracks #1 and #2 is an "open track" in which an additionally recordable area remains in the track. Each of Tracks #3 and #4 is a 15 "closed track" or a "complete track" in which an additional recording is impossible because the track is fully filled. The last track, Track #5, is an "intermediate track" in which an additional recording is always possible. The closed tracks, Tracks #3 and #4, in which additional recording is 20 impossible, begin as open tracks. As any remaining available area of Tracks #3 and #4 is zero-padded due to a specific command (e.g., a close command from the host), the status of the tracks is changed into the closed tracks after the zero padding (hatched portion). In this example, the remaining available area of Track #3 is zero-padded before 25 the track is closed. In some cases, when an open track is changed into a closed track according to a close command, it is possible to change WO 2005/006316 PCT/KR2004/001701 10 only the information on the type of the track without the zero padding. Each track includes a "start PSN of track" and also includes always a "Last Recorded Address" (LRA) without regard to the type of the track. The PSN is a physical sector number and is a general term indicating 5 information on a specific location of the disc. In addition, the LRA is the last address in which data is actually recorded. Therefore, in case of Track #3, the location just before the zero padding becomes the LRA (LRA3). In more detail, in case a recording-unit is a cluster, e.g., in a BD-WO, a total of 32 sectors exist in one cluster. In this case, if data is 10 recorded on some sectors within one cluster and the remaining sectors are zero padded, the location prior to the zero padding becomes the LRA. Further, a next writable address (NWA) calculated from the LRA is determined only at the open tracks (Tracks #1 and #2) and the 15 intermediate track (Track #5) by a request of the host or the like and then the calculated NWA information is transmitted appropriately, e.g., to the host. Since additional recording is impossible at the closed tracks (Tracks #3 and #4), there is no NWA for Tracks #3 and #4 in this example. 20 The present invention provides schemes of indicating various types of tracks as shown in FIG. 2 and indicating session information associated with the tracks. This will be explained by referring to FIGS. 3-6. FIG. 3 illustrates the structure of a write-once optical disc such as a 25 BD-WO and a method of recording management information on the disc according to various embodiments of the present invention. The WO 2005/006316 PCT/KR2004/001701 11 write-once optical disc of FIG. 3 relates to a single layer disc having only one recording layer. However, the present invention is not limited to such and the disc structures and methods of the present invention are equally applicable to a multi-layer disc such as a dual layer disc. 5 As shown in FIG. 3, the disc includes a lead-in area, a data area and a lead-out area. Inner and outer spare areas ISAO and OSAO for replacing defective areas in order to manage physical defects are provided in the data area. Defect management areas DMA1~DMA4 are provided in the lead-in and lead-out areas. A first temporary defect 10 management area TDMA1 is provided in the lead-in area, and a second temporary defect management area TDMA2 is provided in the outer spare area OSAO. The TDMAs store defect management information temporarily, while the DMAs store the defect management information permanently. When the data area cannot be recorded any more or the 15 disc is to be finalized, the information stored in the final TDMA is transferred to at least one DMA. Generally, each DMA stores the same information so that if one DMA fails or has defects, important management information is not lost and can be retrieved from the other DMAs. In general, in case of a rewritable optical disc, only a defect 20 management area (DMA) of a limited size is provided because it is possible to repeatedly write/erase data to/from the DMA. Thus, the DMA of a larger size is not needed. However, in case of the write-once optical disc such as a BD-WO, an area where the data are recorded once cannot be used for rewriting. Therefore, for a write-once optical 25 disc, a DMA of a larger size is needed for the defect management. The TDMA1 is allocated with a fixed size in the lead-in area and the WO 2005/006316 PCT/KR2004/001701 12 TDMA2 is allocated with a size varying according to the size of the outer spare area OSAO. For example, if the size of the OSAO is (Nx256) clusters where N is a positive integer, then the size (P) of the OSAO can be: P=(Nx256)/4 clusters). 5 A temporary defect list information (TDFL) and a temporary disc definition structure information (TDDS) together can be recorded on each TDMA as one recording-unit (in case of the DB-WO, one cluster). Track information (Track-Info) of the disc and the TDDS can be also recorded together as one recording-unit. The TDMA can have one or 10 more of such recording-units. Here, if a defect occurs within the data area, a process of replacing the defective area with the spare area is carried out, and the management information associated with this process is stored as the TDFL. In case of a single layer disc, the TDFL is recorded with the size of 1 cluster to 15 3 clusters according to the size of the defect list. Track-Info (or SRRI) is disc status information that indicates whether or not a specific area of the disc has been recorded. Specifically, Track Info can be used to cases where the disc has a sequential or incremental recording. As shown in FIG. 3, one cluster of the TDIA 20 can include Track-Info at Sectors 0 - 30, and a TDDS at Sector 31. But it is also possible to record the TDDS at the first sector (Sector 0) and to record Track-Info at the remaining sectors of the cluster. The structure of the track information (Track-Info) 30 in FIG. 3 will be now described in detail. First, the track information 30 generally 25 includes three parts: (a) a header (31) for making the track information identifiable, (b) a list of track information (32) for directly indicating the WO 2005/006316 PCT/KR2004/001701 13 track information, and (c) a track information list terminator (33) for indicating the termination of the track information. The header ("Track Info Header") 31 is located at the head of the Track Info 30 and includes a "Track Info structure Identifier" field 31a for 5 making the track information identifiable, a "Location info of open track" field 31b for indicating a location of the open track(s) existing within the corresponding track information, a "Total number of sessions" field 31c for indicating the total number of sessions, and a "Location info of session start (or end) track" field 31d for indicating a 10 location of the start or end track of the session(s). Therefore, it is possible to check the contents of the overall track information before the track information list is directly read out. As a result, it is possible to newly define and standardize necessary information in the header, except for the above fields. 15 The list of track information ("List of Track Info") 32 is recorded next to the header 31. If the list of track information is terminated, the track information list terminator ("Track Info List Terminator") 33 indicates the termination of the track information. Specifically, the track information list terminator is a meaningful information indicating the 20 termination location of the corresponding track information in case the track information is variable in size. For example, the track information of the present invention can be recorded within the maximum thirty-one sectors of a cluster (the TDDS is recorded at the remaining one sector of the cluster). However, in case the track 25 information need not be recorded in the entire thirty-one sectors at a specific time (specifically, at an initial recording), necessary track WO 2005/006316 PCT/KR2004/001701 14 information is recorded and the type of the track information is then represented through the track information list terminator 33. Therefore, any system confusion can be prevented and, if necessary, other useful management information can be recorded to the spare 5 area(s). Accordingly, as the management information of the disc, the track information (SRR information) 30 includes the header 31, the list of track information (SRR entry list) 32 and the track information list terminator 33, and all these pieces of information are recorded 10 collectively at every updating. Other information, as needed, can be recorded as part of the track information 30. The list of track information 32 will be described below in more detail. The list of track information (SRR entry list) 32 includes a plurality of entries 34, each entry corresponding to one track (one SRR) within the 15 disc and assigned to 8 bytes. This entry 34 is also referred to herein as a track information entry or an SRR entry. Each track information entry 34 includes a first status area/field (Status1) 35, a first location area/field 36 for carrying first address information of the corresponding track, a second status area/field (Status2) 37, and a second location 20 area/field 38 for carrying last address information in which data is recorded on the corresponding track. The first location field 36 carries the start PSN of the corresponding track, and the second location field 38 carries the LRA of the corresponding track. As an example, bits b63-b60 are allocated to the first status field 35, 25 bits b59-b32 are allocated to the first location field 36, bits b31~b28 are allocated to be the second status field 37, and bits b27-bO are WO 2005/006316 PCT/KR2004/001701 15 allocated to the second location field 38. Depending upon the need and. standardization, the present invention covers different sizes and other ways of allocation for these fields of entries 34. The first and/or second status fields 35 and 37 carry status 5 information including, but not limited to, the type of the corresponding track (track or SRR status) and session information relating to a session of the disc. As a result, the type of the corresponding track can be determined from the status information. The session information is information representing the location of a session where the 10 corresponding track is located. In addition, the location of the corresponding track can be determined from the location fields 36 and 38. Accordingly, the system can check whether the specific area of the disc is a recordable area or a session closed area by accessing the track 15 information entries. If a track information entry 34 is read out, the type of the corresponding track, the start location and the LRA of the track can be determined and/or verified accurately. Further, the session information within the track can be acquired. In this manner, the session information as well as the information on 20 the types of the tracks are recorded together. Therefore, unlike the related art, the session information that the host or the user can utilize is represented without allocating an additional physical area on the disc, thereby improving greatly the efficiency of the disc use. The recording of the session information without any allocation of the 25 physical area can be named as a "virtual session" or "session logical information".
WO 2005/006316 PCT/KR2004/001701 16 FIG. 4 illustrates an example of the structure of a track information entry 34 within the track information of a write-once optical disc such as a BD-WO according to a first embodiment of the present invention. Referring to FIG. 4, in this example, a plurality of tracks (Tracks #1 to 5 #8) exist on the disc. Each track is distinguished from each other by the track status information in the first status field (Status1) 35 that indicates the type of the corresponding track according to definitions. In addition, the second status field (Status2) 37 stores therein session status information indicating whether or not the corresponding track is 10 the start of a session. That is, information indicating the location of a start of a session associated with the track is recorded as the session status information in the Status2. As an example, the track status information in the Status1 can be represented with "0000b" to indicate an open track, "0001b" to indicate 15 an intermediate track, and "0010b" to indicate a closed track. Each session status information in the Status2 is distinguished from each other by allocating "1000b" to the respective session start tracks, and "0000b" to non-session start tracks, respectively. In FIG. 4, each of Sessions #1, #2 and #3 can be defined as the closed session that starts 20 and ends with the closed track. Session #4 can be defined as the open session that starts with the open track (Track #7) and is not closed yet. According to the above definition, the recording on the closed session is impossible and only the reproduction of the corresponding session is possible. Further, the open session will be a recordable session. 25 If a close session command to close a specific session is issued, the open tracks existing within the open sessions are all changed into the WO 2005/006316 PCT/KR2004/001701 17 closed tracks and the information on the type of the tracks is also changed to indicate the closed status of the tracks. For example, although Track #2 of Session #1 is an open track at first, the zero padding (dummy padding) is applied to the recordable area of this track 5 by the close command (e.g., a close track command or a close session command), thereby changing Track #2 into a closed track. As a result, Session #1 is changed from an open session to a closed session that ends with the closed track, Track #2. In a specific system, only the track status information on the type of the tracks can be changed into 10 "0010b" to indicate a closed track without the zero padding applied to the track. In the example of Fig. 4, since all of Tracks #1 to #6 are closed tracks, their track status information in the Status1 indicates "0010b". However, Tracks #1, #3 and #4 among them are respectively the start 15 tracks of Sessions #1, #2 and #3, respectively, and as such, their session status information in the Status2 indicates "1000b". Tracks #2, #5 and #6 are non-session start tracks, so that their session status information in the Status2 indicates "0000b". Since Track #7 is an open track, its track status information in the Status1 indicates 20 "0000b". Track #7 is also the start track of Session #4, so that its session status information is "1000b". Since Track #8 is an intermediate track, its track status information in the Status1 indicates "0001b". In addition, since Track #8 is not the start track of a session, its session status information in the Status2 indicates "0000b". In this 25 case, Session #4 that is not closed can be defined as the open session. In the embodiment of FIG. 4, the session status information stored in WO 2005/006316 PCT/KR2004/001701 18 the Status2 37 can be indicated with a single bit. For instance, a bit having a value "1" can mean a session start track, and a bit value "0" can mean a non session-start track, or vice versa. This one bit can be any bit allocated to the second status field 37. Similarly, any two 5 adjacent bits can be allocated to indicate the track status information in the first status field 35. FIG. 5 illustrates an example of the structure of a track information entry 34 within the track information 30 of a write-once optical disc such as a BD-WO according to a second embodiment of the present 10 invention. While the first embodiment in Fig. 4 distinguishes the respective tracks using only their start tracks, the second embodiment provides a method for variously distinguishing the tracks with the indications of a session start track, a session end track, a one track one session, and a non-session start/end track. According to the 15 second embodiment, the session status information recorded within the track information of the present invention can be defined in various manners. In addition, if the session information is needed as standardized information, the session information can be distinguished through its subdivision. 20 The structure and use of the track information entry 34 in FIG. 5 is identical to those shown in FIG. 4 as discussed above, except for the second status field 37. In the second embodiment, the second status field (Status2) 37 stores session status information that can indicate four different statuses of the corresponding track associated with the 25 entry 34. Accordingly, the structure and use of the second status field 37 will now be provided and the discussion of the identical parts will be WO 2005/006316 PCT/KR2004/001701 19 omitted. Referring to FIG. 5, Tracks #1, #4 and #7 are respectively the start tracks of Sessions #1, #3 and #4 and thus, their session status information in the Status2 37 indicates "1000b". Tracks #2 and #6 are 5 respectively the session end tracks of Sessions #1 and #3, so that their session status information in the Status2 37 indicates "1001b". Track #3 is the session start/end track so that its session status information in the Status2 37 is "0001b". This means one track-one session (one track for one session) so that the one track is both the start and end 10 track. Tracks #5 and #8 are middle tracks (non-session start/end tracks), so that their session status information in the Status2 37 indicates "0000b". Accordingly, in case that each session ends with the closed track, it can be defined as the closed sessions (e.g., Sessions #1, #2 and #3). In case each session does not end with the close track or 15 does not have the session end track, it can be defined as the open session (e.g., Session #4). In the embodiment of FIG. 5, a different number of bits can be allocated to indicate the session status information stored in the Status2 37. Similarly, any two adjacent bits can be allocated to indicate the track 20 status information in the first status field 35. FIG. 6 illustrates an example of the structure of a track information entry 34 within the track information 30 of a write-once optical disc such as a BD-WO according to a third embodiment of the present invention. The structure and use of the track information entry 34 in 25 FIG. 6 is identical to those shown in FIG. 4 as discussed above, except for the structure and use of the first and second fields 35 and 37. The WO 2005/006316 PCT/KR2004/001701 20 structure and use of other fields 36 and 38 are identical to those of FIG. 4. In the embodiment of FIG. 6, the first status field (Status1) 35 is reserved and the second status field (Status2) 37 stores therein the 5 session status information. The session status information can be indicated with a single bit. For instance, in the Status2, a bit having a value "1" can mean a session start track and a bit value "0" can mean a non session-start track. Any single bit of the Status2 can carry this session status information. For instance, the first bit (b3 1) of the 10 Status2 37 can carry the session status information. Any unused bits of the Status2 can be reserved for any other use. In another variation, the Status2 in FIG. 6 can store therein both the session status information and the track status information, and the Status can be reserved for any other use. In this case, as an example, 15 the first bit (b31) of the Status2 can carry the session status information, and the remaining three bits (b30-b28) of the Status2 can carry the track status information as discussed above in FIG. 4. FIG. 7 illustrates a method for updating the track information of the write-once disc of FIGS. 3-6 according to an embodiment of the present 20 invention. Industrial Applicability Here, since the write-once optical disc has a special characteristic of one-time recording, the status information indicating the recorded 25 status of a specific area in the disc is always necessary. Therefore, the "updating of the track information" means the system or the user is WO 2005/006316 PCT/KR2004/001701 21 allowed to use the track information by updating the track information each time the disc status is changed according to the recording on the disc. Accordingly, when a new track is created or an existing track is closed, 5 new track information is created so that the updating of the track information is necessary and performed. In addition, when the disc is ejected or the power is turned off, the use of the disc is paused. Therefore, in this case, the updating of the track information is also necessary and performed since the track information of a final status 10 must be updated in order to accurately check the recorded status of the disc in the next use of the disc. According to the method of FIG. 7, the track information of a previous stage and the current track information to be updated are cumulatively recorded together, and a list of track information is sorted and recorded 15 in a specific sequence on the disc. Specifically, in order to record an (n+1)-th track information during the updating process, a previously recorded (n)-th track information is first checked. Then, the (n)-th recorded track information and the current (n+1)-th track information are considered as one list of the track information, such that they are 20 sorted and recorded in a specific sequence. In the same manner, in order to record an (n+2)-th track information to be updated, the previously recorded (n+1)-th track information is first checked. Then, the recorded (n+1)-th track information and the current (n+2)-th track information to be updated are considered as one list of the track 25 information, so that they are sorted and recorded in a desired sequence. As an example only, the sorting can be according to the track status WO 2005/006316 PCT/KR2004/001701 22 information indicating the type of the track, and then further based on the first address information (Start PSN) of the track. Other sorting schemes are possible. Herein, in case the sorting of the list of the track information according 5 to the above example is applied to the present invention, the sorted status at the (n+2)-th updating is now discussed. First, the open track whose information on the type of the track is "0000b" is sorted. Next, only one intermediate track whose information on the type of the track is "0001b" is sorted and the general closed track whose information on 10 the type of the track is "0010b" is sorted. In case the type of one track is equal to the type of the comparing track, the track whose first address information of the track is most leading is sorted preferentially. However, with regard to the sorting, a bit arrangement allocated as the information on the type of the track and a reference of the sorting are a 15 matter of selection and a variety of methods can be applied according to the system or designer. The method of updating the track information according to the present invention, in which the sorting is performed including the previous track information, has an advantage in that all tracks existing within 20 the disc are sorted according to the type of the tracks. Therefore, the desired information on the type of the tracks can be easily acquired. In addition, all track information of the previous stages can be checked at a time by referring to the latest track information updated last, thereby reducing the access time. 25 FIG. 8 illustrates a recording/reproducing apparatus in which the present method of recording, managing and/or updating the disc WO 2005/006316 PCT/KR2004/001701 23 status information of the disc as discussed above is implemented. The present methods and disc structures, however, can be implemented in other types of devices or systems. As shown in FIG. 8, the apparatus of the present invention includes a 5 recording/reproducing part 10 for recording/reproducing information on/from an optical disc such as a write-once optical disc, e.g., BD-WO, and a control part 20 for controlling the recording/reproducing part 10. The control part 20 issues a command for recording or reproducing information on or from a specific area of the recording/reproducing 10 part 10. Specifically, the recording/reproducing part 10 includes: an interface unit 12 for allowing communication with external devices such as the control part 20; a pickup unit 11 for recording or reproducing data on or from the optical disc; a data-processor 13 for receiving a reproduction signal from the pickup unit 11 to restore it 15 into a desired signal value, or for modulating a to-be-recorded signal into a signal to be -recorded on the optical disc; a servo unit 14 for accurately reading out the signal from the optical disc, or controlling the pickup unit 11 to accurately record the signal on the optical disc; a memory 15 for temporarily storing information, including the 20 management information, and data; and a microprocessor 16 for controlling the components of the recording/reproducing part 10. All the elements of the recording/reproducing apparatus are operatively coupled. Herein, the recording/reproducing process of the optical disc according 25 to the present invention will be described in detail. First, if an optical disc such as a BD-WO is loaded into the recording/reproducing WO 2005/006316 PCT/KR2004/001701 24 apparatus of FIG. 8, the latest track information recorded on a preset management area of the optical disc is read out and temporarily stored in the memory 15 of the recording/reproducing part 10. The microprocessor 16 controls the recording and updating of the track 5 information and other management information. In addition, since the latest used status of the disc is recorded within the track information of the disc, the start address information of the specific track, the LRA and the session information of the specific portion within the disc are read out, and the recording or non-recording status and the start/end 10 of the session in the specific area can be checked from the read-out information. This information can then be used to record/reproduce data on/from the optical disc. In case it is necessary to record or reproduce information on or from the specific area of the optical disc, the control part 20 transmits this 15 information as the recording/reproducing command to the recording/reproducing part 10 together with the location information of the specific area where the -recording is desired. After the microprocessor 16 of the recording/reproducing part 10 receives the recording command, the control part 20 can accurately check the 20 recorded status of the specific area within the disc, where the recording is desired, from the track information stored in the memory 15. Accordingly, it is possible to perform the recording/reproducing command desired by the control part 20 or any other device. According to the method of recording the management information on 25 the write-once optical disc of the present invention, the track information can be recorded on the write-once optical disc in which the WO 2005/006316 PCT/KR2004/001701 25 physical defect management is performed. In addition, because the session information is recorded within the track information of the disc, allocation of an additional physical area is not needed and the compatibility with the existing reproduction-only standard can be 5 maintained. Further, using the disc structure and the sorting method of the present invention, it is possible to efficiently update the track information. As a result, it is possible to efficiently manage the management information even in the write-once optical disc having a new and different physical structure. 10 It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. 15
1. A recording medium having at least one recording layer, the recording medium including at least one track where data is sequentially recorded, the recording medium comprising: 5 a session including at least one track; and track information on the at least one recording layer, the track information pertaining to the at least one track and including a track entry list, the track entry list including a plurality of track entries, each track entry pertaining to a track and including a session status field to store session start 0 information indicating whether the pertaining track is a start of the session.
2. The recording medium of claim 1, wherein each track entry further includes a start address field indicating where the pertaining track starts, and a last recorded address field storing the last recorded address of the pertaining track. 5
3. The recording medium of claim 2, wherein the session status field is located between the start address field and the last recorded address field.
4. The recording medium of any one of claims 1 to 3, wherein the session status field includes one bit assigned to carry the session start information.
5. The recording medium of any one of claims 1 to 3, wherein the track 20 information further includes a header, and the header includes a list of opened tracks for locating each opened track existing on the recording medium and a total number of tracks existing on the recording medium.
6. The recording medium of any one of claims 1 to 5, wherein the track information is stored in a temporary defect management area designated on 25 the at least one recording layer, the temporary defect management area storing 27 therein management information of the recording medium until the recording medium is finalized.
7. A method for recording management information on a recording medium having at least one recording layer, the recording medium including at least 5 one track where data is sequentially recorded, the method comprising: (a) recording a track information onto the at least one recording layer, the track information pertaining to the at least one track and including a track entry list, the track entry list including a plurality of track entries, each track entry pertaining to a track and including a session status field to store session 10 start information indicating whether the pertaining track is a start of a session formed by at least one track.
8. The method of claim 7, wherein each track entry further includes a start address field indicating where the pertaining track starts, and a last recorded address field storing therein the last recorded address of the pertaining track, 15
9. The method of claim 8, wherein the session status field is located between the start address field and the last recorded address field.
10. The method of any one of claims 7 to 9, wherein the session status field includes one bit assigned to carry the session start information.
11. The method of any one of claims 7 to 10, wherein the track information 20 further includes a header, and the header includes a list of opened tracks for locating each opened track existing on the recording medium and a total number of tracks existing on the recording medium.
12. The method of any one of claims 7 to 11, wherein the recording step (a) records the track information into a temporary defect management area 25 designated on the at least one recording layer, the temporary defect management area storing therein management information of the recording medium until the recording is finalized. 28
13. An apparatus for recording management information on a recording medium having at least one recording layer, the recording medium including at least one track where data is sequentially recorded, the apparatus comprising: an optical pickup configured to record data on the recording medium; 5 and a microprocessor configured to control the optical pickup to record track information on the at least one recording layer, the track information pertaining to the at least one track and including a track entry list, the track entry list including a plurality of track entries, each track entry pertaining to a 10 track and including a session status field for storing therein session start information indicating whether the pertaining track is a start of a session formed by at least one track.
14. The apparatus of claim 13, wherein each track entry further includes a start address field indicating where the pertaining track starts, and a last 15 recorded address field storing therein the last recorded address of the pertaining track.
15. The apparatus of claim 14, wherein the microprocessor is configured to control the session start information to be stored into the session status field located between the start address field and the last recorded address field. 20
16. The apparatus of any one of claims 13 to 15, wherein the session status field includes one bit assigned to carry the session start information.
17. The apparatus of any one of claims 13 to 16, wherein the each track entry further includes track status information indicating whether the pertaining track is opened or closed. 25
18. The apparatus of any one of claims 13 to 17, wherein the track information further includes a header, and the header includes a list of opened 29 tracks for locating each opened track existing on the recording medium and a total number of tracks existing on the recording medium.
19. The apparatus of any one of claims 13 to 18, wherein the microprocessor is configured to control the pickup to record the track information onto a 5 temporary defect management area designated on the at least one recording layer, the temporary defect management area storing therein management information of the recording medium until the recording medium is finalized.
20. The apparatus of any one of claims 13 to 19, further comprising: a host configured for transmitting to the microprocessor a command for 10 recording/reproducing the track entries on/from the recording medium, wherein the microprocessor is configured to control the optical pickup according to the command from the host.
AU2004256685A 2003-07-15 2004-07-09 Write-once optical disc, and method and apparatus for recording management information thereon Ceased AU2004256685B2 (en)
KR1020030048279A KR20050009031A (en) 2003-07-15 2003-07-15 Method for recording management information on optical disc write once
KR10-2003-0048279 2003-07-15
PCT/KR2004/001701 WO2005006316A1 (en) 2003-07-15 2004-07-09 Write-once optical disc, and method and apparatus for recording management information thereon
AU2004256685A1 AU2004256685A1 (en) 2005-01-20
AU2004256685B2 true AU2004256685B2 (en) 2009-10-01
ID=36642320
AU2004256685A Ceased AU2004256685B2 (en) 2003-07-15 2004-07-09 Write-once optical disc, and method and apparatus for recording management information thereon
US (2) US7573792B2 (en)
EP (1) EP1644922B1 (en)
JP (2) JP4895809B2 (en)
KR (2) KR20050009031A (en)
CN (2) CN100458933C (en)
AT (1) AT449408T (en)
AU (1) AU2004256685B2 (en)
BR (1) BRPI0412646A (en)
CA (1) CA2532373C (en)
DE (1) DE602004024204D1 (en)
DK (1) DK1644922T3 (en)
ES (1) ES2335996T3 (en)
MX (1) MXPA06000589A (en)
RU (1) RU2353981C2 (en)
TW (2) TWI345766B (en)
WO (1) WO2005006316A1 (en)
AU2003264977B2 (en) * 2002-09-26 2009-03-26 Lg Electronics Inc. Optical disc, method and apparatus for managing a defective area on an optical disc of write once type
US7643390B2 (en) * 2003-02-21 2010-01-05 Lg Electronics Inc. Write-once optical recording medium and defect management information management method thereof
TWI405191B (en) * 2003-05-09 2013-08-11 Lg Electronics Inc Write once optical disc, and method and apparatus for recovering disc management information from the write once optical disc
AU2004237019B2 (en) * 2003-05-09 2010-06-10 Lg Electronics Inc. Recording medium having data structure for managing at least a data area of the recording medium and recording and reproducing methods and apparatuses
CN100580779C (en) * 2003-07-04 2010-01-13 Lg电子株式会社 Method and apparatus for managing overwrite recording on optical disc write once
BRPI0412556A (en) * 2003-07-14 2006-09-19 Lg Electronics Inc physical recording medium, method and apparatus for recording management information on the same
MXPA06002621A (en) * 2003-09-08 2006-06-05 Lg Electronics Inc Write-once optical disc, and method and apparatus for management information thereon.
EP1760715A4 (en) * 2004-06-15 2013-03-13 Panasonic Corp Drive device
EP0871172A2 (en) * 1997-04-11 1998-10-14 Sony Corporation Method and medium for recording digital data
EP0989554A1 (en) * 1998-09-22 2000-03-29 Sony Corporation Recording medium, recording method and recording apparatus
US20020136134A1 (en) * 2001-03-22 2002-09-26 Motoshi Ito Recording method, reproduction method, recording apparatus, reproduction apparatus, and information recording medium
JP3528179B2 (en) 1992-07-31 2004-05-17 ソニー株式会社 Recording apparatus and method
JP3130380B2 (en) 1992-08-28 2001-01-31 株式会社ケンウッド Optical disk recording and reproducing apparatus
DE69432980T2 (en) * 1993-03-09 2004-04-22 Canon K.K. Information recording method and apparatus
JPH07220400A (en) * 1994-01-28 1995-08-18 Matsushita Electric Ind Co Ltd Information control method of write-once storage device
JPH0945004A (en) * 1995-07-25 1997-02-14 Ricoh Co Ltd Cd-rom drive apparatus
CN1183528C (en) 1996-12-19 2005-01-05 松下电器产业株式会社 Optical disk, method for recording write-once information on and from optical disk, method for reproducing same, optical disk reproducing, device optical disc recording and reproducing device
JP3822942B2 (en) * 1996-02-23 2006-09-20 松下電器産業株式会社 Write-once recording medium recording / reproducing apparatus
WO1998022946A2 (en) * 1996-11-18 1998-05-28 Philips Electronics N.V. Writing device, record carrier and writing method, and reading device for reading information blocks
EP1365405A2 (en) 1998-07-28 2003-11-26 Lg Electronics Inc. Method and apparatus of recording data in the optical recording medium
EP1128368B1 (en) 1998-09-10 2007-08-29 Matsushita Electric Industrial Co., Ltd. Optical information recording medium, method of manufacture thereof, and method of recording and reproduction
EP2200032A3 (en) 1998-09-18 2010-09-22 Kabushiki Kaisha Toshiba Information recording method, information recording device, and information recording medium
JP2001110168A (en) * 1999-10-13 2001-04-20 Ricoh Co Ltd Information recording and reproducing device, information recording and reproducing method, and recording medium readable by computer in which information recording and reproducing program is recorded
JP3871851B2 (en) 2000-05-11 2007-01-24 太陽誘電株式会社 Write-once optical disc recording / reproducing apparatus and recording medium
JP2002117649A (en) * 2000-10-05 2002-04-19 Sony Corp Optical disk, information recording device, and information recording method
JP2002117652A (en) * 2000-10-10 2002-04-19 Kenwood Corp Recording device and method for correcting management information
JP2002170342A (en) 2000-12-05 2002-06-14 Funai Electric Co Ltd Method for recording write-once type optical disk
JP2002352522A (en) * 2001-03-22 2002-12-06 Matsushita Electric Ind Co Ltd Recording method, reproducing method, recording device, reproducing device and information recording medium
PL206370B1 (en) * 2001-04-24 2010-07-30 Koninklijke Philips Electronics N.V.Koninklijke Philips Electronics N.V. Device and method for recording information
TWI235927B (en) * 2001-04-25 2005-07-11 Koninkl Philips Electronics Nv Methods and devices for recording or reading files on/from a sequential medium and sequential medium
JP3719966B2 (en) * 2001-09-14 2005-11-24 松下電器産業株式会社 Optical disc recording and reproducing method and a recording and reproducing apparatus
JP3925144B2 (en) * 2001-10-12 2007-06-06 株式会社日立製作所 Recording method and recording medium
CA2473447A1 (en) * 2002-01-16 2003-07-24 Solvay Pharmaceuticals B.V. Solid salts of benzazepine compounds and their use in the preparation of pharmaceutical compounds
WO2003060894A1 (en) * 2002-01-18 2003-07-24 Koninklijke Philips Electronics N.V. Optical data storage medium and use of such medium
JP2003228962A (en) 2002-01-29 2003-08-15 Sony Corp Device, method, and program for write once read many information recording and reproduction, and computer- readable program storage medium where the program for worm (write once read many) recording and reproduction is recorded
JP3987376B2 (en) 2002-03-14 2007-10-10 株式会社リコー Write-once optical recording medium
AU2003208622A1 (en) 2002-03-20 2003-09-29 Matsushita Electric Industrial Co., Ltd. Information recording medium, recording apparatus, reproduction apparatus, recording method and reproduction method allowing for updating of a defect list
EP1540648A4 (en) 2002-08-03 2008-12-24 Samsung Electronics Co Ltd Information storage medium and method of recording and/or reproducing with respect to the medium
AU2003264977B2 (en) 2002-09-26 2009-03-26 Lg Electronics Inc. Optical disc, method and apparatus for managing a defective area on an optical disc of write once type
JP4063076B2 (en) 2002-12-27 2008-03-19 ソニー株式会社 Optical recording method and optical recording apparatus
JP4117878B2 (en) 2002-12-27 2008-07-16 株式会社リコー Write-once optical recording medium and recording method thereof
KR101068678B1 (en) 2003-03-03 2011-09-30 코닌클리케 필립스 일렉트로닉스 엔.브이. Method and arrangement for searching for strings
EP1547069B1 (en) 2003-03-08 2017-03-01 Samsung Electronics Co., Ltd. Method for preserving data-recording status of a write-once recording medium, and write-once recording medium therefor
JP4026517B2 (en) * 2003-03-12 2007-12-26 ソニー株式会社 Recording medium, recording apparatus, and recording method
KR100974904B1 (en) 2003-03-17 2010-08-09 파이오니아 가부시키가이샤 Write once type recording medium, recording apparatus, reproducing apparatus, and recording method for write once type recording medium
AU2004237019B2 (en) 2003-05-09 2010-06-10 Lg Electronics Inc. Recording medium having data structure for managing at least a data area of the recording medium and recording and reproducing methods and apparatuses
CN100580779C (en) 2003-07-04 2010-01-13 Lg电子株式会社 Method and apparatus for managing overwrite recording on optical disc write once
JP4157503B2 (en) 2003-07-08 2008-10-01 松下電器産業株式会社 Write-once recording medium, recording method, recording apparatus, reproducing method, and reproducing apparatus
CN102063917A (en) 2003-07-08 2011-05-18 松下电器产业株式会社 Write-once recording medium production method, recording method and reproduction apparatus
BRPI0412556A (en) 2003-07-14 2006-09-19 Lg Electronics Inc physical recording medium, method and apparatus for recording management information on the same
JP4483853B2 (en) * 2006-11-02 2010-06-16 ソニー株式会社 Recording medium, recording apparatus, reproducing apparatus, recording method, reproducing method
2003-07-15 KR KR1020030048279A patent/KR20050009031A/en unknown
2004-07-09 KR KR1020067000908A patent/KR101041817B1/en not_active IP Right Cessation
2004-07-09 WO PCT/KR2004/001701 patent/WO2005006316A1/en active Application Filing
2004-07-09 ES ES04748405T patent/ES2335996T3/en active Active
2004-07-09 MX MXPA06000589A patent/MXPA06000589A/en active IP Right Grant
2004-07-09 CN CN 200480020471 patent/CN100458933C/en active IP Right Grant
2004-07-09 EP EP04748405A patent/EP1644922B1/en active Active
2004-07-09 BR BRPI0412646 patent/BRPI0412646A/en not_active Application Discontinuation
2004-07-09 DK DK04748405T patent/DK1644922T3/en active
2004-07-09 RU RU2006104619/28A patent/RU2353981C2/en not_active IP Right Cessation
2004-07-09 AT AT04748405T patent/AT449408T/en unknown
2004-07-09 CN CN 200810183969 patent/CN101436419B/en not_active IP Right Cessation
2004-07-09 DE DE200460024204 patent/DE602004024204D1/en active Active
2004-07-09 AU AU2004256685A patent/AU2004256685B2/en not_active Ceased
2004-07-09 JP JP2006520115A patent/JP4895809B2/en not_active Expired - Fee Related
2004-07-09 CA CA 2532373 patent/CA2532373C/en not_active Expired - Fee Related
2004-07-12 US US10/887,904 patent/US7573792B2/en not_active Expired - Fee Related
2004-07-14 TW TW96105861A patent/TWI345766B/en active
2004-07-14 TW TW93121026A patent/TWI300923B/en active
2009-01-02 US US12/348,030 patent/US8054718B2/en active Active
2009-02-17 JP JP2009034173A patent/JP5059039B2/en not_active Expired - Fee Related
EP1644922A1 (en) 2006-04-12
RU2006104619A (en) 2006-06-27
TW200504720A (en) 2005-02-01
RU2353981C2 (en) 2009-04-27
US7573792B2 (en) 2009-08-11
CA2532373A1 (en) 2005-01-20
CN1823374A (en) 2006-08-23
ES2335996T3 (en) 2010-04-07
BRPI0412646A (en) 2006-09-26
TWI300923B (en) 2008-09-11
KR20060054311A (en) 2006-05-22
CN101436419A (en) 2009-05-20
MXPA06000589A (en) 2006-04-07
CA2532373C (en) 2012-11-13
CN101436419B (en) 2011-04-06
AT449408T (en) 2009-12-15
JP2007531173A (en) 2007-11-01
US20050025007A1 (en) 2005-02-03
US8054718B2 (en) 2011-11-08
TWI345766B (en) 2011-07-21
CN100458933C (en) 2009-02-04
TW200805284A (en) 2008-01-16
DE602004024204D1 (en) 2009-12-31
AU2004256685A1 (en) 2005-01-20
JP5059039B2 (en) 2012-10-24
JP4895809B2 (en) 2012-03-14
DK1644922T3 (en) 2010-02-01
WO2005006316A1 (en) 2005-01-20
KR20050009031A (en) 2005-01-24
JP2009104789A (en) 2009-05-14
KR101041817B1 (en) 2011-06-17
US20090122668A1 (en) 2009-05-14
EP1644922B1 (en) 2009-11-18
EP2093759B1 (en) 2011-07-06 Write-once optical disk, and method and apparatus for recording and reproducing management information on write-once optical disk
KR101036473B1 (en) 2011-05-24 Method of managing overwrite and method of recording management inforamtion on an optical disc write once
CA2531572C (en) 2013-01-15 Write-once recording medium, recording method, recording apparatus, reproduction method, and reproduction apparatus
CA2532371C (en) 2012-11-06 Write-once optical disc, method and apparatus for recording management information on write-once optical disc
KR101008640B1 (en) 2011-01-17 Write-once type optical disc, and method and apparatus for managing defective areas on write-once type optical disc using tdma information
AU2004271477B2 (en) 2009-11-05 Write-once optical disc and method for recording management information thereon
KR101024904B1 (en) 2011-03-31 Recording medium,recording method, recording apparatus and recording/reproducing system
JP2006519459A (en) 2006-08-24 Method, apparatus and disk for managing disk defects
ES2331002T3 (en) 2009-12-18 Recordable optical disc once, and method and apparatus for recording management information on a recordable optical disc once.
US7929391B2 (en) 2011-04-19 Write-once optical recording medium and defect management information management method thereof
US7522501B2 (en) 2009-04-21 Recording, reproducing and product for management of data having a temporary defect management area containing at least one pointer
CA2537889C (en) 2013-10-22 Write-once optical disc, and method and apparatus for recording management information on the write-once optical disc
TWI300923B (en) 2008-09-11 Write-once recording media, and method and apparatus for recording management information thereon
JP4870654B2 (en) 2012-02-08 Write-once disc capable of data area management, data area management method of write-once disc, data recording apparatus, data reproduction method and apparatus thereof
EP1730731B1 (en) 2013-08-21 Recording medium with physical access control (pac) cluster thereon and apparatus and methods for forming, recording, and reproducing the recording medium
JP2007528565A (en) 2007-10-11 Optical disk that can be recorded only once, and method and apparatus for restoring management information from an optical disk that can be recorded only once
2018-02-01 MK14 Patent ceased section 143(a) (annual fees not paid) or expired