MXPA06010599A - Recording medium with physical access control (pac) information thereon and apparatus and methods for forming, recording, and reproducing the recording medium - Google Patents

Abstract

A recording medium, such as a high-density and/or optical recording medium including physical access control (PAC) information recorded thereon, and apparatus and methods for recording to and reproducing from the recording medium, in order to improve data protection, data management and/or reproduction compatibility.

Description

RECORDING MEDIA WITH ACCESS CONTROL INFORMATION PHYSICAL (PAC) IN THE SAME AND APPARATUS AND METHODS TO FORM, RECORD AND REPRODUCE THE MEDIA OF RECORDING DESCRIPTION OF THE INVENTION The present invention relates to PAC (Control of Physical Access), PAC zones, PAC allocation units, media containing zones and / or PAC allocation units (e.g., high density optical discs, such as Blu-ray disc) of apparatus and methods for recording and / or reproduce data up to and / or from the media. The media, for example, optical discs can be used to record a large amount of data. Of the optical discs available, a new high density optical medium (HD-DVD), for example, the Blu-ray disc (hereinafter referred to as "BD") is under development, which allows recording and / or storage of high definition video and / or audio data. The BD also includes a rewritable Blu-ray disc (BD-RE) single-recording Blu-ray disc (BD-O), and a read-only Blu-ray disc (BD-ROM). Currently, a problem with existing systems is the potential incompatibility between disk drives of different versions, for example, a disk drive from a previous version with a previous set of capabilities may have difficulty interacting with a medium that has interacted with a disk unit that includes at least one capacity of a subsequent set of capabilities. Exemplary embodiments of the present invention provide a PAC in a medium, such as high density optical disk, and apparatus and methods for recording data up to and reproducing data from the medium using a PAC. Exemplary embodiments of the present invention provide physical access control (PAC) information recorded therein, in order to improve data protection, improve data handling, improve reproduction compatibility, prevent data destruction, and / or reduce unnecessary repetitive operations. Exemplary embodiments of the present invention provide a means, such as a high density optical disk, and apparatus and methods for handling a PAC. Exemplary embodiments of the present invention provide a means, such as a high density optical disk, and apparatus and methods that use a PAC to handle data. In an exemplary embodiment, the present invention is directed to a recording medium that includes at least one physical access control area (PAC) that also includes at least one physical access control (PAC) allocation unit, so minus one PAC allocation unit that includes information to handle recording up to and / or playback from the recording medium. In an exemplary embodiment, the present invention is directed to a method for recording the recording medium that includes recording a physical access allocation unit (PAC) the PAC allocation unit includes information to handle recording up to and / or playback from the recording medium and recording status information for the PAC allocation unit, the status information includes at least validity of the PAC allocation unit. In an exemplary embodiment, the present invention is directed to a method for reproducing from a recording medium that includes reading status information for at least one physical access control (PAC) allocation unit, at least one allocation unit of PAC which includes information to handle playback from the recording medium and read at least one PAC allocation unit based on the status information, the status information includes at least the validity of each PAC allocation unit. In an exemplary embodiment, the present invention is directed to an apparatus for recording to and / or reproducing from a recording medium including an impeller for driving an optical recording device for recording data on the recording medium or reproducing data from the recording medium. recording and a controller to control the impeller to record or reproduce the data based on at least one physical access control zone (PAC), at least one PAC area includes at least one physical access control (PAC) allocation unit, which includes information to handle recording to and / or playback from the recording medium, and status information for each unit of PAC allocation, the status information indicates at least the validity of each PAC allocation unit. In an exemplary embodiment, the present invention is directed to an apparatus for recording and / or reproducing from a recording medium including an impeller for driving an optical recording device for recording data in the recording medium or reproducing data from the medium of recording medium. recording and a controller for controlling the impeller for recording or reproducing the data based on at least one physical access control zone (PAC), at least one PAC area including at least one physical access control allocation unit (PAC), the controller reads the status information by at least one PAC allocation unit, at least one PAC allocation unit includes information to handle playback from the recording medium and the controller reads at least one PAC allocation unit in the status information, the status information includes at least the validity of each PAC allocation unit.

In an exemplary embodiment, the present invention is directed to a recording medium that includes at least one physical access control (PAC) allocation unit that includes information to handle recording to and / or playback from the recording medium and status information for each PAC allocation unit, the status information indicates at least the validity of each PAC allocation unit. It will be understood that the foregoing general description and the following detailed description of the embodiments of the present invention are examples and explanatory and are intended to provide a further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide further understanding of the exemplary embodiments of the invention and are incorporated in and constitute a part of this application, illustrate exemplary embodiments of the invention where: FIGURE 1 illustrates zones PAC of a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 2 illustrates a diagram showing configurations of the INF02 zone and the INF01 zone on a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 3 illustrates a structure of a PAC recorded in a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 4 illustrates a structure of a PAC in a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 5 illustrates configuration of a "PAC unknown rules" field according to an exemplary embodiment of the present invention; FIGURE 6 illustrates segments zones in a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 7 illustrates a PAC zone on a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 8 illustrates a zone of segments handled by a plurality of PAC zones, on a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 9 illustrates a Disk Definition Structure (DDS) on a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 10 illustrates a DDS representing a PAC state in a high density optical disk according to an exemplary embodiment of the present invention; FIGS. 11 to 13 illustrate diagrams showing various alternatives of a DDS, each representing a PAC status on a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 14 illustrates additional alternatives of a DDS in a high density optical disk according to exemplary embodiments of the present invention; FIGURE 15 illustrates other alternatives of a DDS representing a PAC state in a high density optical disk according to exemplary embodiments of the present invention; FIGURE 16 illustrates a DDS representing a PAC state in a high density optical disk according to another exemplary embodiment of the present invention; FIGURE 17 illustrates a block diagram of an optical recording / reproducing apparatus according to an exemplary embodiment of the present invention; and FIGURE 18 illustrates a flow chart that is a method for recording up to and / or reproducing from a high density optical disk that is recorded in the same PAC according to an exemplary embodiment of the present invention. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numbers will be used throughout the drawings to refer to the same or similar parts. FIGURE 1 illustrates a PAC zone on a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 1, the high density optical disc can be divided, from an inner circumference to an outer circumference, into an input zone, a data zone, and an output zone. The entrance area can also be divided into an area of INF02 and an INFO zone to record various types of information in them. The INF02 zone and / or the INFOl zone may include PAC (Physical Access Control) zones. For convenience, a PAC area assigned to the INF02 zone is labeled as a PACII zone and the PAC zone to the zone assigned to the INFOl zone is labeled as a PACI area. One of the PACII zone and the PACI zone may have an original PAC recorded in it and the other may be a backup zone to record a copy of the original PAC. If a writing direction is from the inner circumference to the outer circumference of the disk, it may be advantageous if the original PAC is recorded in the PACII zone and the backup PAC is grave in the PACI area. The PAC zone can be provided to handle problems that may arise when an older version of a disk drive device can not detect functions on an aggregated disk that has functions compatible with a newer version of a disk drive device. The PAC zone can handle compatibility problems using one or more "unknown rules". An "unknown rule" can be used to control predictable disk operations, for example, basic read, write control, etc., linear replacement of a defective zone, over logical writing, etc. An area can also be provided on the disk, which indicates where the "unknown rule" can be applied, for example, segments to define the entire disk or a certain portion of the disk, which is described later in greater detail. In this way, to define an area of the disk, an older disk drive device is able to access to use the "unknown rule", a newer version of the disk reproduces the unnecessary access operation of the drive unit. oldest version disc. In addition, by defining an area accessible to a physical disk area for an older version disk drive device to be accessed when using the PAC, a data area containing user data recorded there may be more strongly protected and / or an unauthorized access (for example, computer intrusion) of the disk can be avoided or reduced.

The zone INFO 2 and the zone INFOl which have the zones PACII and I in them in the entrance area can be reviewed in the view of the characteristics that can be written of the optical disk of high density. FIGURE 2 illustrates a diagram showing configurations of the INF02 zone and the INFO1 zone in a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 2, for an example of BD-RE high density optical disk, the INF02 zone may have 256 allocation units which include 32 units of allocation of the PACII zone, 32 units of allocation of the DMA zone 2 (Defect Management Area) to handle the defects, 32 units of assignment of zones of CD2 (Control Data) that has control information recorded in them, and / or 32 units of zone allocation of BZ 3 (Zone Save and Intermediate Memory) of a buffer memory zone. The INFO zone can include 32 allocation units from the BZ2 zone of a buffer area, 32 disk unit area allocation units that can be from a disk drive area to store specific information for a disk drive, 32 zones of allocation of the DMA1 zone to handle defects, 32 zones of allocation of the CDI zone for recording control information, and / or a zone of BZ1-PACI that can be used as the PAC zone. For a recordable high density optical disc (BD-R), the INF02 zone can have 256 allocation zones that include a PACIFIC zone, a DMA2 zone, a CD 2 zone and a BZ 3 zone, each with 32 allocation units, and zone INF01 includes a zone BZ2, a zone DMA1, a zone CDl and / or a zone BZ1 and PACÍ, each with 32 allocation units and 128 unit allocation units. For a read-only high-density optical disk (BD-ROM) one PAC can be a primary PAC and the INF02 zone can have 256 allocation units that employ a PACII zone, a CD 2 zone, and a BZ 3 zone, each one with 32 allocation units, and the INFO zone 256 allocation units that include a CDl zone, and / or a BZ1-PACI area each with 32 allocation units. The PAC zones of exemplary embodiments of the present invention may be assigned to the INF02 zone and / or to the INFO1 zone in the entry zone in 32 allocation units each, according to the rewritable characteristics of the high density optical disc. In the PAC area of 32 allocation units, a PAC may have an allocation unit, for recording a plurality of valid PACs. An exemplary structure in which a PAC is recorded as an allocation unit is described with reference to FIGURE 3. FIGURE 3 illustrates a PAC recordable on a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 3, a PAC of an allocation unit size (32 sectors) may include a specific header area and information area, specific to a particular disk unit (e.g., optical disk unit). The PAC header zone can have 384 bytes assigned to a first PAC sector, to record various types of PAC information, such as information from an "unknown PAC rule" and segments, and another area of the PAC zone can Having specific information for the disk drive (optical) can be referred to as "unknown rules" recorded in it. An exemplary structure of a PAC recorded in the above structure is described with reference in FIGURE 4. For convenience, in the description, particular fields of the PAC that require more detailed description refer to the drawings that illustrate the particular fields. FIGURE 4 illustrates a PAC in a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 4, the PAC may include a header portion if it can be applied to all PACs and an area that has specific information for the disk unit, recorded in it. An exemplary header portion may include 4 bytes of "PAC_ID", 4 bytes of "Unknown PAC Rules", 1 byte of "Label All Disk", 1 byte of "Number of Segment "and / or 32" segments Segment_0 ~ Segment_31 each with 8 bytes. The "PAC_ID" can provide the current PAC status and the identification codes, for example, the "PAC_ID" contain '00 00 00 00 'bits, the "PAC_ID" indicates that the present PAC is not used, if the "PAC_ID" "contains' FF FF FF FF 'bits, the" PAC_ID "indicates that the present PAC area is not available for use due to defects or something similar, and if the" PAC_ID "contains? FF FF FF FF' bits, the "PAC_ID" indicates that the present PAC zone is available for use again even if the PAC zone has been previously used. By recording the "PAC_ID" in predetermined bits, such as "54 53 54 00 'bits, the" PAC_ID "can be used as a code to determine whether the disk is a disk for which a present disk unit can have free access. That is, if the present disk unit does not recognize the "PAC_ID" applied to it (possibly a case where the present disk unit can not recognize the present PAC due to a version mismatch or similar problem), the '54 53 54 00 'bits can be used as a code to refer to the information recorded in the field of "Unknown PAC Rules." As described, the "Unknown PAC Rules" field can be used as a field that designates an operating margin of a disk unit that may not recognize the present PAC, which will be further described with reference to FIGURE 5. FIGURE 5 illustrates a "Unknown PAC Rules" field in accordance with an exemplary embodiment of the present invention. to FIGURE 5, a degree of control capability of several areas on the disk can be allowed by the "Unknown PAC Rules". In this example, the "Area" column in Figure 5 represents the areas that can be controlled on the disk, the "Control" column represents control type, such as read / write, etc .; and "Number of bits" column represents a number of bits required for the control. Additional bits in the "Number of bits" column can represent double-layer disk cases with two recording / playback sides. For example, in the "Area" column in Figure 5, the read / write control capability of the PAC zone can be represented by "PAC zones 1, 2" fields, and the write control capability of the PAC zone. A defect management zone can be represented by "DMA Zone 1, 2" fields. The write control capability of a replacement area for a defective area can be represented with the field "Replacement Assignment Units", the read / write control capability of a data zone can be represented with a field "Data Zone" ", and the ability to control overwriting logic can be represented with a field" On Logical Writing ". The write control capability can be applied only to BD-RE and BD-R rewritable discs and the write control capability of a replacement area for a defective area can also be applied to the BD-RE and BD- rewritable discs R. As a result, several exemplary features of the present invention may depend on the rewritable characteristics of the high density (optical) disk. Using the prior art, the "Unknown PAC Rules" field issues the designation of a controllable area on the disk for a disk unit with a poor version co-version. In addition, the prior art can also be applied to control access to a particular physical area and disk in a user option. Returning to FIGURE 4, the "All Disk Label" field can be used as a field to indicate that PAC can be applied to an entire area of the disk and the "Number of Segments" field is a field that can represent a number of segment area to which the PAC can be applied. In an exemplary mode, a maximum number of segments can be assigned to a PAC. An exemplary modality, a maximum number of 32 segments can be assigned to a PAC and information about the assigned segments can be written in the fields from "Segment_0" to "Segment_31", each one including 8 bits. Each of the "Segment_0 ~ 31" fields can include the first physical sector number (PSN) and the last PSN of the assigned segment area recorded therein. The segments are described in more detail in the following. FIGURE 6 illustrates the segment zones in a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 6, if required, there may be a maximum number (e.g., 32) of segment area on the high density optical disk, to apply the PAC to it. The maximum segment area number can start from "Segment 0". In one example, the positions of the segment areas can be identified by an optical disk drive by writing the first PSN, which can indicate a start position of the assigned segment area and the last PSN which can indicate the last position of the area of assigned segments in the "Segments" field of the PACII and PACÍ zones. In an exemplary arrangement, none of the plurality of assigned segments needs to overlap and the start and end potions can designate the limit of allocation units. Thus, in exemplary embodiments, the present invention can provide a plurality of PACs, to handle a segment area number (eg, 32), which are described in greater detail in the following. FIGURE 7 illustrates a PAC zone on a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 7, a plurality of valid PACs, each with a common size allocation unit, can be written in a PAC area (eg, the PAC zone of INF02 or INFOl) of 32 allocation units. A valid PAC can represent a zone that has several types of PAC information described in the above, and includes copies, can include a maximum of valid PACs (for example, 16) each with a common size, which can be assigned in a PAC area. A valid PAC can have a default PAC_ID (for example, PAC_ID = 54 53 54 00) according to a version of the disk drive of the optical disk that has the PAC recorded in it, and a PAC area not used by a spare PAC zone. The spare PAC zone can be filled with 00 bits (PAC_ID = 00 00 00 00) which indicates that the zone is not used or can be left as "unused area" depending on an adjustment of the optical disk drive. Because only one write is physically possible in the case of a recordable BD-R high-density optical disc, in one example, nothing is described in the spare area until the writing is complete or until the disc is closed ( no additional writing is desired by the user). Because physical repetitive overwriting is possible in the case of a BD-R rewritable high-density optical disk, in one example, even without the valid PACs in the copy PACs, 32 units are described in the PAC area designation, a number of times of writing is acceptable. If a defect is present in a PAC area in the PAC to be written to it, the PAC may be written in an area following the defective area. A defect can be the result of damage to, contamination of a disc surface, and when the defect occurs in the PAC area to be written, the PAC information can be written in an area following the defective area. The plurality of valid PACs that can be assigned to the PAC zone can have various types of information with respect to the controllable areas of the disk, which are described with reference in FIGURE 8. FIGURE 8 illustrates zones of segments handled by a plurality of PAC zones and a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 8, for units of different versions, the controllable segment areas may be designated on the disk due to the plurality of PACs. That is, it is possible to control a segment 0 Seg # 0, and Segment 1 Seg # 1 through PAC # 0 on the disk, a Segment 0 Seg # 0, Segment 1 Seg # 1, and Segment 2 Seg # 2 on the disk through PAC # 1, and segment 0 Seg # 0 on the disk through PAC # 2. In this example, none of the segment areas controllable by the respective PACs overlap and the segment areas are rearranged in ascending order starting from segment # 0, which indicates that the PACs can be independent of each other. Furthermore, although a PAC may have a maximum of 32 segment areas, a total number of segments handled by the plurality of PACs may also not exceed, nor may they exceed 32, even in an example where the segments are handled by a plurality of PACs. . Finding a position of the valid PAC area of the PAC area or the rapid finding of a position of a next recordable PAC area, while avoiding an area already written on or a defective area from above the PAC zone, may affect the initialization and / or the recording speed of the disc. In particular, samples of recoveries can be executed to try to read a defective area. In exemplary embodiments, the present invention provides a method in which various status information about the positions of the plurality of valid PACs, a position of the next recordable PAC, and / or other relevant information is written for example in a data structure, such as a Disk Definition Structure (DDS). A DDS can be an area that contains information about a first PSN of a defect list, a position of a user data area, sizes of spare parts, and / or other relevant information, and can be information written in the area of DMA of the disk as information in a Defect Management Structure (DMS) together with a list of defects (DFL). The information described in the DMA can be information scanned and preloaded in advance when the disk is loaded into a disk drive. Thus, once the various status information on the PAC, such as the positions of the valid plurality of PACs, a position of the next recordable PAC, and / or other relevant information is described in the DDS as pointers, the optical disk unit You can have information about the PAC area without needing to explore all the PAC zones. A DDS can include various types of information on the status of the PAC area and will be described in the following. FIGURE 9 illustrates a DDS on a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 9, the DDS may include a "DDS identifier" field, a "DDS format" field, a field of "First Disk Unit Area PSN (P_DA)" which represents the first number of the physical sector of a disk unit area, a field of "First PSN of the List of Defects (P_DFL)" which represents the first PSN of the list of defects, or a field of "Location of LSN 0 of the Data Area Username "representing a position of an LSN (a logical sector number) of the user data area, a field of" Size 0 of Internal Spare Area (ISA0_size) "representing a size of an area 0 of area of internal spare, a field of "Outside Spare Area Size (0SA_size)" representing a size of an exterior spare area 0, a field of "Interior Spare Area Size 1 (ISAl_size)" which represents a size of an inner spare area 1, a field of "Default Status of PAC Assignment Units" which represents a defect state of the PAC zone, and / or a "PAC Assigned Space" field representing a designated state of the PAC zone. In this way, an exemplary DDS can provide various types of status information about the PAC, such as a position of a defective allocation unit in the PAC area and / or a position of the allocation units having valid PAC assigned to it. the same ones to use the field of "Default Status of PAC Assignment Unit" and / or the field "Assigned Space of PAC". A method for representing PAC status information using "PAC Assignment Unit Default Status" and / or the "PAC Assigned Space" field will be described in more detail in the following. FIGURE 10 illustrates a diagram showing a DDS representing a PAC status on a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 10, two bytes can be assigned to the field "PAC Assignment Units Default Status" field of the DDS, to represent a write failure due to a faulty mapping unit of the PAC zone or an area of defective allocation unit. As shown, a N bit of PDS (PAC Defect Status) in FIGURE 10 is a bit to indicate the state of the PAC allocation units, where a 0 bit may indicate the PAC allocation unit N is not a defective area and a bit 1 could indicate the PAC assignment unit N is a defective area. PDS bit 0 can indicate a status of PAC zone # 0, PDS bit 1 can indicate a status of PAC zone # 1, etc., up to PDS bit 15 (for example, for 16) to indicate the status of valid PACs, which can be assigned to a PAC zone. Two bytes can also be assigned to the "PAC Assigned Space" field in the DDS area, to indicate a status of the PAC zone assignment. The PSB N (PAC Status Bit) in FIGURE 10 may be a bit indicating the allocation status of the PAC allocation units, where a 0 bit may indicate a state in which the PAC allocation unit N can be newly assigned, for example, the PAC is not used or PAC_ID = 00000000 or state FFFFFFFF and a bit 1 can indicate a state in which the allocation unit N of PAC is assigned. In this example, like the PDS bits, the PSB bits can be assigned from a PSB bit 0 to a PSB bit 15, so that bit 0 of PSB indicates zone # 0 PAC, bit 1 PSB indicates zone # 1 of PAC, etc. Several exemplary embodiments in which a state of the PAC area is represented using a DDS, for example, as described, will be discussed in the following. FIGS. 11 to 13 illustrate diagrams showing several exemplary embodiments of a DDS, each representing a PAC status on a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 11, bit 1 of PDS is a bitmap of the field of "PAC Assignment Units Default Status", which is information of a defective area of the PAC area in the information contained in the DDS. Accordingly, an optical disk unit may find out that the PAC zone # 1 is defective based on the information. Also, each of the bit 0 of PSB, 1 of PSB, and PSB 2 is also 1 in a bitmap of the "PAC Assigned Space" field that indicates a mapping status of the PAC zone, and an optical disk unit may learn that PAC # 0, # 1 of PAC and # 2 of PAC are in state assigned based on the above information. Therefore, the next available PAC area that is not a defective area and is not an assigned area, is PAC area # 3. Also with reference to FIGURE 12, because each of the PDS 0 bits, 1 of PDS, 4 of PDS and 5 of PDS is 1 in the bitmap of the field of "PAC Assignment Default Status" , an optical disk unit may not know each of the PAC # 0, PAC # 1, PAC # 4 and PAC # 5 areas is a defective area, and because each of the 0 bits of PSB, PSB 1, PSB 2, PSB 3, PSB 4, PSB 5, and PSB 6 is 1 in the bitmap of the "PAC Assigned Space" field an optical disk unit can learn about that each of the zones # 0 of PAC, # 1 of PAC, # 2 of PAC, # 3 of PAC, # 4 of PAC, # 5 of PAC, and # 6 of PAC are in an assigned state. Therefore, in the case of FIGURE 12, the next available PAC area is PAC # 7. Also, with reference to FIGURE 13, because each of the bits 0 of PDS, 1 of PSB, 4 of PSB, and 5 of PSB, is 1 in the bitmap of the field of "States of defect of Units. of PAC Assignment ", an optical disk unit may learn that each of the PAC # 0, PAC # 1, PAC # 4, and PAC # 5 areas is a defective area, and because each one of the bits 0 of PSB, 1 of PSB, 2 of PSB, 4 of PSB, 5 of PSB, and 6 of PSB, is 1 in the bitmap of the field of "Assigned Spaces of PAC", a disk unit Opticians can learn that each of the PAC # 0, # 1 PAC, # 2 PAC, # 4 PAC, and # 5 PAC, and # 6 PAC are in an assigned state. Therefore, in the case of FIGURE 13, the next available PAC zone is PAC # 3, which may be an area which can currently be reused, even if PAC area # 3 was previously used. As stated in the above, a copy of information on the PAC II zone of the INFO 2 zone can be re-recorded in an area of the PAC I zone of the INFO 1 zone corresponding to an area of the PAC II zone of the INFO zone 2. If the PAC zone # 1 of the PAC II zone is defective, the PAC I zone of the zone of the PAC zone # 1 can be used (if it is not defective). It is also possible that the DDS is formed to include, not only the information about the 4 bytes of PAC II zone, but also the information about the PAC I zone when assigning additional bytes (for example, 4) to the DDS. In this case, the information written in PAC I will be free of defective area of the PAC II area. FIGURE 14 illustrates a diagram showing another embodiment of a DDS on a high density optical disk according to another exemplary embodiment of the present invention. With reference to FIGURE 1, as described above, the DDS may include a "DDS identifier" field, a "DDS format" field, a "First Disk Unit Area PSN" field (P_DA) ), "a field of" First PSN of List of Defects (P_DFL) ", a field of" Location of LSN 0 of Area of Data of Users ", a field of" Size of Area 0 of Internal Spare (ISA0_size) ", a field of "Outside Spare Area Size (OSA_size)" and a field of "Interior Spare Area Size 1 (ISAl_size) and / or a" PAC Status "field that represents a state of the PAC zone. The "PAC Status" field can have 8 bytes, to represent the status of the PACs in the PAC II zones of the INFO 2 zone and the PAC I zone of the INFO 1 zone, which will be described in detail in the FIGURE 15 illustrates a diagram showing another embodiment of a DDS, which represents a PAC status of a high density optical disk according to another axis modality mplar of the present invention. With reference to FIGURE 15, the field of "PAC Status" of the DDS can use 64 bits (8 bytes) in total to represent the status of the PACs in the PAC II zone of the INFO 2 zone and the PAC I zone of the INFO 1 zone In this example, the information in a PAC can be represented by two bits, for example, by assigning bits bl and bO to indicate a state of the PAC # 0 in the PAC I zone, and bits b2 and b3 to indicate a state of # 2 PAC of the PAC I zone and each subsequent two bits indicate a PAC status of the PAC zone in succession. Accordingly, bits b31 and b30 may represent PAC status # 15 of the PAC I zone, bits b33 and b32 may indicate PAC status # 0 of the PAC zone of zone 2 and bits b63 and b62 can indicate the PAC status # 15 of the PAC 2 zone.

The PAC status of the PAC area represented by two bits can indicate that the PAC is not recorded when the two bits are 00 and PAC is written in bits 00 00 00 00 to indicate that the PAC can be recorded in FF FF FF FF bits can indicate that the PAC can be reused even if the PAC has been used before when the two bits are 01, the PAC is a defective area FF FF FF FE when the two bits are 10, and the PAC is a valid PAC (for example, Valid PAC = 54 53 54 00) when two bits are 11. Therefore, the next recordable PAC area is an area with bits 00 or bits 01, and a valid PAC position will be an area with bits 11. Al Using the above method, the optical disc unit can obtain information about a valid PAC position, a position of a defective area, a next recordable position, and / or other relevant information about the PACs written in the PAC 1 area and the PAC zone 1 of the 8 bytes of the "PAC Status" field inserted in the DDS zone . FIGURE 16 illustrates a DDS representing a PAC state in a high density optical disk according to another exemplary embodiment of the present invention. If a bitmap of the "PAC Status" field of the DDS is the same as illustrated in FIGURE 16, since the bits b33 and b32 that indicate the PAC # 0 in the PAC II zone is 11, it is known that PAC # 0 in the PAC II zone is a valid PAC. Also, since bits b35 and b34 that indicate # 1 of PAC in the PAC II zone are 10, it is known that PAC # 1 in the PAC II zone is a defective area, since bits b37 and b36 which indicate # 2 of PAC in the PAC II zone are 01, it is known that # 2 of PAC in the PAC II zone is an area previously used, or if 00, can currently be used. Accordingly, it is intended to find the valid PAC position, the optical disk unit can find the PAC with bits 11 of the information in the "PAC Status" field of the DDS indications, and when it is intended to find the position In a new recordable PAC area, the optical disc drive may find bits 01 or 00 in the "PAC Status" information. In addition, a backup of PAC information in the PACII zone can be written in the PACI area, although the bitmap indicates the PACII zone of the "PAC Status" field and the bitmap that indicates the zone of PACÍ are identical, if the positions of the defective areas and / or other similar areas are not identical, the two bitmaps may not be identical. Therefore, it is intended to read information described in the PACÍ area due to an unavoidable situation, it may be necessary to refer to information that indicates the PACÍ area of the information in the "PAC Status" field of the DDS. Unlike the exemplary method for representing the state of PAC and the PACII zone and the PACI zone with 8 bytes in the DDS, there are also other exemplary methods to represent only the PAC status in the PACII zone with only four bytes. That is, as described in the above, because the information written in the PACII area and the information described in the PACÍ zone is identical, and in this case, if you want to know the status of PAC in the area of PACÍ, the PACÍ zone can be determined from a position of the PACII zone that corresponds to the PACI area. In this example, if the writing of the PAC information in the PACI zone corresponding to a position of the PACII zone fails due to the defective area or other similar circumstance in the PACII or PACI area, a method of not using the area It can be used. The information representing positions of a plurality of PACs valid with the DDS similar to the exemplary embodiments of the present invention may be favorable for a BD-RE recordable disc, or R whose information is updated by excessive writes. For example, in the case of the BD-RE recordable high density optical disc, in whose positions the valid PAC plurality is changed whenever writing is repeated after rejection due to the physical characteristics of the recordable disc, the position information can be written to a Temporary Disc Management Area (TDMA) as a Temporary Disc Definition Structure (TDDS) information and written as DDS information at the time, the term of the disc writing or the closing of the disc. disc, when no more writing is desired by the user. FIGURE 17 illustrates a block diagram of an optical recording / reproducing apparatus according to an exemplary embodiment of the present invention. With reference to FIGURE 17, the recording / playback optical apparatus may include a recording / playback device 10 for recording to and / or playback from the optical disc, and a computer or controller 20 for controlling the recording device 10 /reproduction. In an exemplary embodiment, the recording / reproducing device 10 can act as the "optical disc unit" discussed in the foregoing together with many exemplary embodiments of the present invention. In an exemplary embodiment, the computer 20 gives a write or playback instruction for writing or reproducing a particular area of the optical disc in the recording / playback device 10, and the recording / playback device 10 performs recording / playback to / from the particular area in response to the instruction of the computer 20. The recording / reproducing device 10 may further include an interface part 12 for performing the communication, such as, exchange of data and instructions with the computer 20, a backup part 11 to write / read data to / from the optical disk directly, a data processor 13 to receive a signal from the backup part 11 and recover a desired signal value or modulate a signal to be written to a signal capable of being written to the disk optical, a servo part 14 for controlling the back portion 11 to read an optical disc signal precisely to write a signal in the optical disk precisely, a memory 15 for the temporary storage of various types of information including handling and data information, and a microprocessor 16 for controlling various part of the recording / reproducing device 10. An exemplary method for recording a PAC on a high density recordable optical disc using the exemplary recording / reproducing optical apparatus will be described in the following. Upon insertion of the optical disk by the optical recording / reproducing apparatus, the operating information can be read on the optical disc and stored in the memory 15 of the recording / reproducing device 10 for use at the time of recording / playback of the optical disc. In this state, if the user wishes to write to a particular area of the optical disc, the computer 20, which commands this as a write instruction, provides information about a write position desired in the recording / playback device 10 along with data that they are going to be written The microcomputer 16 in the recording / reproducing device 10 can receive the write instruction, determine the optical disc area of the computer 20 to write in a defective area or means of the driving information stored in the memory 15, and / or perform data writes according to the write instruction of the computer 20 in an area which is not a defective area. If it is determined that writing to an entire disc or a particular area of the disc includes new features with which a previous version of the recording / playback device is not provided, it leads to the previous version of the recording / playback device not being detected, or if it is intended to restrict functions such as writes or reproduction to / from a particular area of the disk according to the restrictions set by the user, the microcomputer 16 of the recording / reproducing device 10 can write control information of the area in the area of CAP on the disk as an "Unknown PAC Rule". The microcomputer 16 of recording / playback device 10 can also write PAC information, such as PAC_ID for a written state and segment information which is control information about the particular area on the disk. The PAC information may be written with a plurality of valid PACs over the PAC zone 2 of the INFO 2 zone in an allocation unit size and the plurality of valid PACs may be written in the PAC 1 zone of the INFO 1 zone as back. In this example, the position information of the plurality of valid PACs can be written to the DDS on the DMA of the optical disk by a method according to exemplary embodiments of the present invention. In particular, the microcomputer 16 can provide position information on the area of the data that is written on it or on the PAC area, and the data on the servo 14 and the data processor 13, so that the writing terminated in a desired position on the optical disc by the backing part 11. Additionally, a method for recording / reproducing the high density optical disc having PAC information written by the above exemplary method will be described in the following.

FIGURE 18 illustrates a flow chart showing a method for recording / reproducing a high density optical disc having PAC recorded therein, in accordance with an exemplary embodiment of the present invention. By inserting an optical disc into the optical recording / reproducing apparatus, the operating information can be read from the optical disc and stored in the memory 15 of the recording / playback device 10, for use at the time of disc recording and playback. optical. The information in the memory 10 may include position information of several zones in the PAC area on the disk. Particularly, the valid PAC positions in the PAC zone can be determined from the DDS information (S10). After the positions of the Valid PACs, a field can be made a PAC_ID of the PAC can be examined, to verify if the PAC_ID is an identified PAC_ID (S20 and S30). If the written PAC_ID is identified, the method can determine that the recording and playback device that has the data written on the disk decides the type of version to a present recording / playback device version or determine if there is no separate restriction of writing / playback, and recording / playback can be executed according to the instruction of computer 20 (S40). If it fails to identify a code written in the PAC_ID, the method can then determine if there are restrictions, such as the recording and playback device that has written the data on the disk has a different version than the current recording and playback device version, the recording / playback may be executed according to the instruction of the computer with reference to the recording / playback restriction areas on the disc written with "Unknown PAC Rule" (S50). For this, the microprocessor 16 can provide the position information and the data according to the instruction of the computer to the servo 14 and the data processor 13, so that the recording / reproduction is terminated at a desired position on the optical disc by part 11 of backup. As described, the apparatus and method for recording / reproducing to / from a high density optical disc of the present invention may have one or more of the following advantages. First, defining an accessible area of a disk of a different version disk drive when using PACs may allow stronger protection of a data area having user data recorded therein, for example, to avoid or reduce unauthorized access (for example, computer intrusion). Second, a plurality of valid PACs in the disk and / or pointers indicate PAC positions may allow more effective handling of the PACs in the high density optical disk. Third, the apparatus and method for recording / reproducing using PAC can allow more effective recording / reproduction of data on a high density optical disk. It will be apparent to those skilled in the art that various modifications and variations may be made to the exemplary embodiments of the present invention described in the foregoing without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided with the commission that falls within the scope of the appended claims and their equivalents.

Claims (33)

1. CLAIMS 1. A recording medium, characterized in that it comprises: at least one physical access control area (PAC) that includes at least one physical access control allocation unit (PAC) of at least one unit of allocation of PAC that includes information to handle recording up to and / or playback from the recording medium. The recording medium according to claim 1, further characterized in that it comprises: at least one handling area containing status information for each PAC allocation unit. The recording medium according to claim 2, characterized in that the recording medium is a rewritable recording medium and at least one handling area is a disc definition structure (DDS). The recording medium according to claim 2, characterized in that the status information includes defect status information and / or assignment status information. The recording medium according to claim 4, characterized in that the defect status information indicates that each PAC allocation unit is defective. 6. The recording medium according to claim 4, characterized in that the defect status information indicates whether each PAC allocation unit is not defective. The recording medium according to claim 4, characterized in that the allocation status information indicates whether each PAC allocation unit is assigned. The recording medium according to claim 4, characterized in that the allocation status information indicates whether each PAC allocation unit is newly assignable. 9. The recording medium according to claim 2, characterized in that the state information includes at least one bit. 10. The recording medium according to claim 3, characterized in that the status information includes a PAC status bit map. The recording medium according to claim 10, characterized in that the PAC status bitmap indicates at least validity of each PAC allocation unit. The recording medium according to claim 10, characterized in that the PAC status bitmap indicates whether each PAC allocation unit is not recorded, is useful or reusable, defective or valid. The recording medium according to claim 2, characterized in that the recording medium is a recordable recording medium and at least one operating area is a temporary disc definition structure (TDDS) 14. The recording medium according to claim 2, characterized in that the recording medium is a read-only recording medium and at least one handling area is a primary PAC allocation unit. The recording medium according to claim 2, characterized in that the status information indicates whether each PAC allocation unit is valid, defective, assigned, newly assignable or available for use. 16. The recording medium according to claim 1, characterized in that at least one PAC area is recorded in an information area of an input zone of the recording medium. The recording medium according to claim 1, characterized in that at least one PAC zone includes two PAC zones, an original PAC zone and a backup PAC zone. The recording medium according to claim 17, characterized in that the original PAC zone and the backup PAC region are graved in different information areas of an input zone of the recording medium. 19. The recording medium according to claim 1, characterized in that each PAC allocation unit includes a PAC header, common to each PAC allocation unit, and a PAC-specific information area that includes specific information for each PAC allocation unit. 20. The recording medium according to claim 19, characterized by the PAC-specific information area includes rules to allow desired applications or functions. 21. The recording medium according to claim 20, characterized by at least one PAC mapping unit may include an unknown PAC allocation unit which is not recognized when trying to record up to and / or reproduce from the recording medium. 22. The recording medium according to claim 21, characterized in that the unknown PAC rules of the unknown PAC allocation unit is used to record and / or reproduce from the recording medium. 23. The recording medium according to claim 22, characterized in that the unknown PAC rules include read / write control information in areas of the recording medium. 24. A method for recording on a recording medium, characterized in that it comprises: recording a physical access control (PAC) allocation unit, the PAC allocation unit includes information to handle recording up to and / or playback from the medium of recording; and recording status information for the PAC allocation unit, the status information includes at least validity of the PAC allocation unit. 25. The method of compliance with the claim 24, characterized in that the status information also includes whether the PAC allocation unit is defective. 26. A method for reproducing from a recording medium, characterized in that it comprises: recording status information from at least one physical access control allocation unit (PAC), at least one PAC allocation unit includes information to manage playback from the recording medium; and reading at least one PAC allocation unit and the status information, the status information includes at least the validity of each unit of PAC allocation. 27. An apparatus for recording to and / or reproducing from a recording medium, characterized in that it comprises: an impeller for driving an optical recording device for recording data in recording medium or reproducing data from the recording medium; and a controller for controlling the impeller for recording or reproducing data based on at least one physical access control zone (PAC) at least one PAC zone includes at least one physical access control allocation unit (PAC) ), which includes information for handling recording up to and / or playback from the recording medium, and status information for each PAC allocation unit, the status information indicates at least the validity of each PAC allocation unit. 28. The apparatus according to claim 27, characterized in that the status information also includes whether the PAC allocation unit is defective. 29. An apparatus for recording up to and / or reproducing from a recording medium, characterized by comprising: an impeller for driving an optical recording device for recording data in the recording medium or reproducing data from the recording medium; and a controller for controlling the impeller for recording or reproducing data based on at least one physical access control zone (PAC) at least one PAC zone includes at least one physical access control allocation unit (PAC) ), the controller reads status information from at least one PAC allocation unit, at least one PAC allocation unit includes information to handle playback of the recording medium, and the controller reads at least one PAC allocation unit based on the status information, the status information includes at least the validity of each PAC allocation unit. 30. A recording medium characterized by comprises: at least one physical access control (PAC) allocation unit that includes information to handle recording to and / or playback from the recording medium; and status information for each PAC allocation unit, the status information indicates at least the validity of each PAC allocation unit. 31. The recording medium according to claim 30, characterized in that the status information also indicates whether each PAC allocation unit is defective, if the recording medium is a rewritable medium. 32. The recording medium according to claim 30, characterized in that each PAC allocation unit contains PAC-specific information to allow desired applications or functions. 33. The recording medium according to claim 30, characterized in that each PAC allocation unit contains common PAC information, because it forms a PAC header.