MXPA06010601A - Recording medium with segment 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 segment 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

MEANS OF RECORDING WITH SEGMENT INFORMATION IN THE SAME AND APPARATUS AND METHODS FOR FORMING, RECORDING AND PLAYING THE RECORDING MEDIA 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 that includes segment information 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 including segment information. Exemplary embodiments of the present invention provide physical access control (PAC) that includes segment information recorded therein, 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 that includes segment information. In an exemplary embodiment, the present invention is directed to a recording medium having a data structure for handling a data area of a recording medium that includes at least one physical access control (PAC) allocation unit, less a PAC allocation unit that includes information to handle recording to and / or playback from the recording medium, each allocation unit includes a PAC header, common to each PAC allocation unit and a specific information area of the PAC. PA, which includes information specific to each PAC allocation unit, where the PAC header includes information on the segment number that identifies a number of segments and a segment list area that identifies each of the segments in an area of user data of the recording medium. In an exemplary embodiment, the present invention is directed to a method for recording or reproducing on a recording medium that includes recording or reproducing at least one physical access control (PAC) allocation unit, at least one unit for assigning PAC that includes the information to handle the recording and / or playback from the recording medium, each PAC allocation unit that includes the segment number information and a segment entry list and if a PAC allocation unit is unknown and the segment number information identifies at least one segment in a user data area of the recording, recording up to and / or playback medium from the user data area for at least one segment. In an exemplary embodiment, the present invention is directed to a method of reproducing from a recording medium including reproducing a user data area recorded in the recording medium based on at least one physical access control allocation unit ( PAC), each of at least one PAC allocation unit includes a number of segments in the user data area, where if the number of segments indicates zero, the reproduction is performed for the entire user data area, and on the other hand, the reproduction is made for each of the number of segments. 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 to drive an optical recording device for recording the data on the recording medium or reproducing the 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) that includes at least one physical access control (PAC) allocation unit, at least one PAC allocation unit that includes information to handle recording to and / or playback from the recording medium, each PAC allocation unit includes segment number information and a segment entry list, the recording controller up to and / or playback from the user data area by at least one segment if a PAC allocation unit is unknown and the number information The segment identifier identifies at least one segment in the user data area of the recording medium.

In an exemplary embodiment, the present invention is directed to an apparatus for reproducing from a recording medium including an impeller to drive an optical recording device to reproduce the data of the recording medium and a controller to control the impeller to reproduce the data based on at least one physical access control zone (PAC) that includes at least one physical access control (PAC) allocation unit, at least one PAC allocation unit that includes the information to handle the recording up to and / or playback from the recording medium, each PAC allocation unit that includes the segment number information and a segment entry list, the controller reproduces a user data area recorded on the recording medium based on at least one PAC physical access control allocation unit that includes a number of segments in the user data area, the controller oduces the entire user data area if the number of segments indicates zero and reproduces each of the number of segments if the number of segments does not indicate zero. It will be understood that the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide 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 the exemplary embodiments of the invention where: FIGURE 1 illustrates a diagram showing the PAC zones on 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 INFO1 zone in a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 3 illustrates a PAC recorded on a high density optical disc according to an exemplary embodiment of the present invention; FIGURE 4 illustrates a PAC in a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 5 illustrates 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 in a high density optical disk according to another exemplary embodiment of the present invention; FIGURE 8 illustrates a PAC in a high density optical disk according to another exemplary embodiment of the present invention; FIGURE 9 illustrates a PAC in a high density optical disk according to another exemplary embodiment of the present invention; FIGURE 10 illustrates control information in a segment area on a high density optical disk according to an exemplary embodiment of the present invention; FIGURE 11 illustrates control information in a segment area on a high density optical disk according to another exemplary of the present invention; FIGURE 12 illustrates a block diagram of an optical recording and reproduction apparatus according to an exemplary embodiment of the present invention. Reference will now be made in detail to the exemplary embodiments of the present invention 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 disk can be divided, from an inner circumference to an outer circumference, into an input zone. , a data area, and an exit zone. The entrance area can also be divided into an area of INF02 and a zone INF01 to record a number of types of information in them. Zone INF02 and / or zone INF01 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 INF01 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 of them may have 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 appliance can not detect functions on an aggregated disk that has functions compatible with a newer version of a disk drive appliance. 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 INFO 2 zone and the INFO zone that have the PACII and I zones therein in the entry zone can be reviewed in view of the writeable characteristics of the high density optical disc. 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. With reference to FIGURE 2, for an example of BD-RE high density optical disk, the INF02 zone may have 256 allocation units including 32 units of allocation of the PACII zone, 32 units of allocation of the DMA zone 2 (Defect Management Area) to handle 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 disk (BD-R), the INF02 zone can have 256 allocation zones that include a PACII zone, a DMA2 zone, a CD 2 zone and a BZ 3 zone, each with 32 units of allocation, and the 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 of disk unit. For a read-only high-density optical disk (BD-ROM), the INF02 zone can have 256 allocation units that include a PACII zone, a CD 2 zone, and a BZ 3 zone, each with 32 assignment units, and the INFO zone 256 allocation units that include a CDI zone, and / or a BZ1-PACI zone 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 a number of PAC information types, such as information from an "Unknown PAC Rule" and segments, and another area from the PAC area. PAC can have 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 "Segment Number" 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 PAC present does not is 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 area is available for use again even if the PAC area has been previously used.When 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 if the disk is a disk for which a present disk drive can e 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 "Unknown PAC Rules" field. As described, the "PAC Unknown Rules" field can be used as a field that designates an operating range 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 "PAC Unknown Rules" field according to an exemplary embodiment of the present invention. With reference 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 N rea column "in Figure 5, the read / write control capability of the PAC zone can be represented with fields of" PAC zones 1, 2", 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 by the field "Replacement Assignment Units", the capacity of The read / write control of a data zone can be represented by a "Data Zone" field, and the ability to control the logical overwrite can be represented by a field "Logical Write Over." The write control capability can be applied only 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 BD-RE and BD-R rewritable discs. the present and invention may depend on the retentive 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. In an exemplary mode, a maximum number of 32 segments can be assigned to a PAC and the information on 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. In an exemplary mode, the header portion can include 4 bytes of "PAC_ID", 4 bytes of "Unknown PAC Rules", 1 byte of "PAC header tag", 1 byte of "Entire_disc_flag", 1 byte of " Segment number defined ", and / or 32" segments Segment_0 ~ Segment_31"each with, for example, 8 bytes. The "PAC Header Label" can be used to connect to the allocation units each, one having a specific PAC that has specific information for a unit. The "PAC Header Label" can be increased by one starting from (01) any time a new PAC is added. In this example, if the bits are FF, this indicates that no new PAC is added, and if the bits are 00, this indicates that the "PAC Header Tag" is not used. FIGURE 8 illustrates a PAC in a high density optical disk according to another exemplary embodiment of the present invention. With reference to FIGURE 8, a PAC according to another exemplary embodiment of the present invention may include a portion of the header and an area having the information specific to the unit and the portion of the header may include 4 bytes of "PAC_ID", 4 bytes of "Unknown PAC Rules", 1 byte of "Label of PAC Header ", 1 byte of" Entire_disc_flag ", 2 bytes of "byte address for the Segments set", 2 bytes of "Number of Segments defined in the Set", and / or a "Reserved for Segment" field that is reserved for 32 Segments, one with 8 bytes. A PAC structure according to another exemplary embodiment of the present invention may include a Byte address for a segment set. That is, for areas reserved for Segments, a number of segment areas indicated in the "Segment Number field defined in the set (N_Segs)" can be indicated and a byte address of a start position can be indicated in the field of "Byte address for the Set of Segments. "In this example, it can be advantageous to use the continuously defined segments.

FIGURE 9 illustrates a PAC in a high density optical disk according to another exemplary embodiment of the present invention. With reference to FIGURE 9, a PAC according to another exemplary embodiment of the present invention may include a portion of the header and an area having the specific information, specific to the unit, and the header portion may further include 4 bytes of "PAC_ID", 4 bytes of "PAC Unknown Rules", 1 byte of "PAC Header Label", 1 byte of "Entire_disc_flag", 2 bytes of "Byte Address for the Main Segment Set", 2 bytes of "Number of Segments defined in the Main Assembly (N_M_Segs)", 2 bytes of "Byte address for the Additional Set of Segments", 2 bytes of "Number of Segments defined in the Additional Set (N_A_Segs)", and / or a field of "Part not used in the specific PAC" in a specific information area, specific to a particular unit. The PAC structure according to another exemplary embodiment of the present invention may include a Main segment set and an Additional segment set. Segment areas can additionally be allocated additionally, for use in a case when it is intended to allocate more segment areas to the 32 segment areas. In an example, a number of main segments defined by the "Number of Segments defined in the Main Set (N_M_Segs)" is recorded and a starting position thereof can be recorded in the "Byte Address for the Main Segment Set" field. That is, the information recorded in the "Byte address for the Main Segment Set" field can serve as an indicator in the area of the defined main segment. The defined additional number of segments can be recorded using the "Number of Segments defined in the Additional Set (N_A_Segs)" and a start position can be recorded in the "Byte Address for the Additional Set of Segments" field. In this example, the area of the additional segment may be provided with a portion not used in the specific PAC in a PAC area of 1 assignment unit size, it may be assigned to the N_A_Segs. The PAC structures of the previous example allow the management of additional segment areas, in addition to the 32 segment areas. Exemplary embodiments of the present invention are directed to the recording control information in the entire disk area, a whole assigned segment area, or the respective assigned segment areas using the designated PAC, as shown in the following. FIGURE 10 illustrates the control information in a segment area on a high density optical disk according to an exemplary embodiment of the present invention. With reference to FIGURE 10, an assigned segment can be represented by an 8 byte entry, where the first Physical Sector Number of the segment area can have a size of 32 byte and the last Physical Sector Number can have a size of 32 byte. Therefore, an optical disk unit can obtain the position information over the area of the assigned segment through the segment information of the recorded PAC. In this example, as described above, a number of areas of the segment (one or more) can be handled by one or more PACs. If at least one segment area is allocated, the optical disk unit can determine the number of segment areas assigned through the "Segment Number" field and determines the controllability, such as reading, writing, and / or other similar operations, in the area through the "Data Zone" field of the "PAC Unknown Rule." If no segment is assigned and the field "Entire_disc_flag" indicating that the PAC is applicable to the entire disk area is recorded, as described above, however the field of the "Data Zone" of the "PAC Unknown Rule" is used a field that indicates accessibility to the data area on the optical disk, such as reading, writing, and / or other similar operations, if the segment area is assigned, write the field "Segment Number", the field "Data Zone" The "Unknown PAC Rule" can be used as a field indicating accessibility to all assigned segment areas. In an exemplary embodiment of the present invention, there may be information about the control of the segment area different from the position information, when the information recorded in the "Segment" field is described in the following. FIGURE 11 illustrates the control information in a segment area on a high density optical disk according to another exemplary embodiment of the present invention. A segment can be represented by an entry and includes a "State 1" field and a "State 2" field to indicate the controllability of a relevant segment area, a "The first PSN" field to present the first Physical Sector Number of the segment area, and / or a field "The last PSN" to represent the last Number of the Physical Sector of the segment area. The "State 1" field can be represented with four-bit control information, to indicate the controllability of a relevant segment area; for an example, "0000" of the "State 1" field may indicate that access to the segment area is not possible for playback or recording, "0001" of the "State 1" field may indicate that access to the segment is possible. Segment area for read only, "0010" of the field of "State 1" can indicate it is possible to access the segment area for write only and "0011" for the field of "State 1", it can indicate that access is possible to the segment area. Therefore, when determining the accessibility to an area of the relevant segment that uses the field "State 1" and the field "State 2", the unnecessary access operations for the segment area can be reduced and in one case a plurality of areas segment is assigned, access to each segment can be controlled. In this example, because the "State 2" field can be a reserved field for future use and not in current use, in one example, the "State 2" field is recorded in the bye of "0000". When the area of the segment is assigned, the control of each of the areas of the segment can not be consistent with 1 controllability in the area of the segment defined to the "Data Area" field of the "Rules Unknown PAC. "That is, for an example, despite all types of access, such as reading and writing in all segment areas it is possible in the" Data Zone ", only the reading of a segment area relevant may be possible in the field of the "Segment." In this example, the read-only control of the segment area of the "Segment" field indicates that it is possible, that is, depending on the controllability of the "Data Zone". , the control of the segment area can be made possible by using a "Y" condition with the field of "Segment." Therefore, if the "Data Zone" field indicates that it is not possible to access all the segment areas assigned to the "Data Zone" field for reading or writing, access to all areas of segment will become impossible regardless of the controllability in the "Segment" field and even if the "Data Zone" field is adjusted in such a way that access to all segment areas is possible, if it is established that access to Individual segment areas is impossible, access to the segment area is impossible. As described, with respect to a PAC of a high density optical disk, a write control portion of this mode may be applicable to a physically high density optical disk BD-R and BD-RE and may depend on the grábales characteristics of the high density optical disc. Recording a first number of the physical sector of an area of the relevant segment in the field of "The First PSN" in FIGURE 11 and a last number of the physical sector of an area of the relevant segment in the field of "The last PSN" of the FIGURE 11, a position of the segment area on the disk can be indicated. FIGURE 12 illustrates a block diagram of an optical recording / reproducing apparatus according to an exemplary embodiment of the present invention. With reference to FIGURE 12, the recording / playback optical apparatus may include a recording / playback device 10 for performing recording / playback on the optical disc, and a computer or controller 20 for controlling the recording / playback device 10. 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 for writing / reading data to / from the optical disk directly, a data processor 13 for receiving a signal from the backup part 11 and recovering a desired signal value or modulating a signal to be written to a signal capable of being written to the disk optical, a servo part 14 for controlling the back part 11 to read a signal from the optical disk precisely or to write a signal to precisely on the optical disc, a memory 15 for temporary storage of various kinds of information including management information and data, and a microcomputer 16 for controlling various parts of the device 10 recording / playback. An exemplary method for recording a PAC on a high density recordable optical disc using the exemplary optical recording / reproducing apparatus will be described in. the next . By inserting the 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 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 desired write position 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 whether the optical disk area of the computer 20 wants to write in a defective area or not from the handling information stored in the memory 15, and / or performing 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 to not detect , 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 PAC on the disk as an "Unknown PAC Rule". The microcomputer 16 of the recording / reproducing 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 of the disk. In this example, if the recorded PAC includes control information for the entire disk area, .the field of "all Disk Banner" that can be recorded, and if at least one segment area is allocated in one area of the disk, to control access to the entire area, a number of assigned segment areas are recorded in the "Segment Number" field and control information, such as accessibility and / or other relevant information, can be recorded in the "Zone of Data "from the" Unknown PAC Rule. " If you want to individually control the segment areas, the control information and segment position can be recorded in the "Segment" field. A PAC can be recorded in the PAC2 area of the INF02 area in an allocation unit size and the PAC and a PAC copy of the PAC can be recorded in the PACI zone of the INFOl zone as a backup. The microcomputer 16 can provide position information that the data area is written thereon, or the PAC zone divides, the data in the servo 14 and the data processor 13, so that the writing is terminated in one position desired 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. 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 included in the PAC area on the disk. Particularly, the positions of the valid PACs in the PAC zone can be recognized from the disk definition structure (DDS) information. After the valid PAC positions are recognized, a PAC_ID field of the PAC can be examined, to verify if the PAC_ID is an identifiable PAC_ID. If the PAC_ID is identified, the method determines that a recording and playback device having written data on the disk has a version identical to a version of the recording and playback device present or there are no separate write / playback restrictions, and the recording / playback can be executed according to the instruction of the computer 20. If the PAC_ID is not identifiable, the method determines that the device that has written the data on the disk has a different version of the recording and playback device version present , and the recording / playback is executed in accordance with the instruction of the computer with reference to the recording / playback restriction areas on the disc including the "Unknown PAC rule" and the "segment". Accordingly, the microcomputer 16 provides the location information and data according to the instruction of the computer to the servo 14 and the data processor 13, so that the recording / playback is terminated at a desired position on the optical disk by the 11 of backup. As described above, the apparatus and method for recording and reproducing on a single-write high density optical disc according to the exemplary embodiments 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, effective recording data up to and / or reproduction data from a high density optical disk is improved by using a PAC that handles the entire data area or a portion of the disk data area. 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. In this way, it is intended that the present invention cover the modifications and variations of this provided invention falling within the scope of the appended claims and their equivalents.

Claims (34)

1. CLAIMS 1. A recording medium having a data structure for handling a data area of a recording medium, characterized in that it comprises: at least one physical access control allocation unit (PAC), at least one unit PAC allocation that includes information to handle recording to and / or playback from the recording medium, each unit of PAC allocation includes: a PAC heading, common for each PAC allocation unit; and a PAC-specific information area, which includes specific information for each PAC allocation unit, where the PAC header includes segment number information that identifies a number of segments and a segment list area that identifies each of the segments in a user data area of the recording medium. The recording medium according to claim 1, characterized in that the PAC-specific information area for each PAC allocation unit performs a specific function or application. The recording medium according to claim 2, characterized in that the specific function or application can include controlling access to the recording media areas. The recording medium according to claim 1, characterized in that the segment list area includes at least one start address and one end address for each one of the segment numbers. 5. The recording medium according to claim 4, characterized in that the number of segments is from zero to a desired number. 6. The recording medium according to claim 1, further characterized in that it comprises data zone bits for each PAC allocation unit, the data zone bits include actions available for each PAC allocation unit. The recording medium according to claim 6, characterized in that the data zone bits indicate whether the data in each of the PAC allocation units can be recorded and / or reproduced. The recording medium according to claim 1, characterized in that at least one PAC allocation unit can include an unknown PAC allocation unit which is not recognized when trying to record and / or reproduce from the medium of recording. The recording medium according to claim 8, characterized in that the unknown PAC rules of the unknown PAC allocation unit are used to record up to and / or play from the recording medium. The recording medium according to claim 9, characterized in that the unknown PAC rules include access control information on the areas of the recording medium. The recording medium according to claim 9, characterized in that it also comprises data zone bits for the segments, the data zone bits indicate available actions for each of the number of segments. The recording medium according to claim 11, characterized in that the data zone bits for segments form a part of the unknown PAC rules. The recording medium according to claim 11, characterized in that when the number of segments is zero, the data zone bits indicate actions available for the user data area. 14. The recording medium according to claim 11, characterized in that the available actions include reading and / or writing. The recording medium according to claim 11, characterized in that the data zone bits indicate whether the data in each of the number of segments can be recorded and / or reproduced. 16. The recording medium according to claim 1, characterized in that none of the segments overlap. 17. The recording medium according to claim 1, characterized in that a maximum number of segments can be defined in a PAC allocation unit. 18. The recording medium according to claim 1, characterized in that a maximum number of segments can be defined in the recording medium. 19. The recording medium according to claim 1, characterized in that at least one PAC header includes a segment pointer that identifies a set of segments in a user data area of the recording medium. The recording medium according to claim 1, characterized in that at least one PAC header includes a segment pointer of the main set identifying a number of main set segments and a subset segment pointer identifying a number of subset segments in a user data network of the recording medium. 21. The recording medium according to claim 1, characterized in that at least one PAC allocation unit is unknown for an apparatus that attempts to record up to and / or reproduce from the recording medium. 22. The recording medium according to claim 21, characterized in that at least one unknown PAC allocation unit includes unknown PAC rules and is processed by the apparatus according to the unknown PAC rules. 23. The recording medium according to claim 22, characterized in that the unknown PAC rules control access to all of at least one of the unknown PAC allocation units. 24. The recording medium according to claim 1, characterized in that the recording medium is a rewritable recording medium. 25. The recording medium according to claim 1, characterized in that the one-write recording medium. 26. The recording medium according to claim 1, characterized in that the recording medium is a read-only recording medium. 27. A method for recording or reproducing on a recording medium, characterized in that it comprises: recording or reproducing at least one physical access control allocation unit (PAC), at least one PAC allocation unit that includes information for handle recording up to and / or playback from the recording medium, each PAC allocation unit includes segment number information and a list of segment entries; and if a PAC allocation unit is unknown and the segment number information identifies at least one segment in a user data area of the recording medium, record up to and / or play from the user data area for at least one segment. The method according to claim 27, characterized in that if the PAC allocation unit is unknown and the segment number information identifies zero segments in the user data area of the recording medium, recording and / or reproducing from the user data area for the entire user data area. 29. The method according to claim 27, characterized in that the segment number information is from zero to a desired number. 30. A method for reproducing a recording medium, characterized in that it comprises: reproducing a user data area recorded in the recording medium based on at least one physical access control (PAC) allocation unit, each of at least one of the PAC allocation units includes a number of segments in the user data area, where if the number of segments indicates zero, reproduction is performed for the entire user data area, and otherwise, the reproduction is performed for each of a number of segments. 31. 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 the recording medium or reproducing data from the recording medium; and a controller for controlling the impeller to record or reproduce the data based on at least one physical access control zone (PAC) that includes at least one physical access control allocation unit (PAC), at least one PAC allocation unit includes information to handle recording up to and / or playback from the recording medium, each PAC allocation unit includes segment number information and a list of segment entries, the controller records to and / or plays back from the user data area for at least one segment without the PAC allocation unit if it does not know the segment number information and identifies at least one segment in a user data area of the recording medium. 32. The apparatus according to claim 31, characterized in that if the PAC allocation unit is unknown and the segment number information identifies zero segments in the user data area of the recording medium, the controller records up to and / or reproduces from the user data area for the entire user data area. 33. The apparatus according to claim 31, characterized in that the information of the segment number is from zero to a desired number. 34. An apparatus for reproducing a recording medium, characterized in that it comprises: an impeller for driving an optical recording device for reproducing data from the recording medium; and a controller for controlling the impeller to reproduce the data based on at least one physical access control zone (PAC) that includes at least one physical access control (PAC) allocation unit, at least one unit PAC allocation includes information to handle recording up to and / or playback from the recording medium, each PAC allocation unit includes segment number information and a list of segment entries, the controller reproduces a recorded user data area in the recording medium based on at least one physical access control (PAC) allocation unit, each of at least one of the PAC allocation units includes a number of segments in the user data area, the controller plays the entire user data area if the number of segments indicates zero and reproduces each of the number of segments if the number of segments does not indicate zero.