RU2299481C2 - Optical record carrier, device and method for recording/reproducing, initialization method and repeated initialization method - Google Patents

Abstract

FIELD: optical record carrier, device and method for recording-reproduction, initialization method and repeated initialization method.

SUBSTANCE: recording-reproducing device includes recording/reading module, recording data onto information record carrier or reading data from information record carrier, having access control area, recorded in which are access control data, while access control data have common information, determined for allowing recording-reading device, which cannot recognize predetermined function of new standard, to control access to this information record carrier; and control module, controlling recording-reading module for recording access control data relatively to function, recognized by recording-reproducing device, in access control area, when information record carrier is being initialized or reinitialized.

EFFECT: ensured compatibility between disks and disk drive systems of various standards.

13 cl, 22 dwg

Description

Cross reference to related applications

This application claims the priority of Korean Patent Application No. 10-2004-0033182, filed May 11, 2004 with the Korean Intellectual Property Office, Korean Patent Application No. 10-2004-0042921, filed June 11, 2004 with the Korean Intellectual Property Office, and Korean Patent Application No. 10-2004-0044514 filed June 16, 2004 with the Korean Intellectual Property Office, the descriptions of which are incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to discs, in particular to information recording media, a recording and reproducing apparatus and method, an initialization method and a reinitialization method by which a disc is initialized for safe recording-reproducing compatibility.

State of the art

Standards for optical systems, including optical drive systems and optical discs, must be updated frequently due to developments in optical disc technology and semiconductor technology. Figure 1 is a diagram for explaining problems related to updating standards. In general, a new standard is obtained by adding new features to the old standard. The disk 12 of the old standard is designed to work in the system 11 of the drive of the old standard, while the disk 14 of the new standard is designed to work in the system 13 of the drive of the new standard.

The old standard and the new standard may or may not provide recording-playback compatibility. If recording-playback compatibility is guaranteed, the old standard disc 12 and the new standard disc 14 can be recorded-played on the drive systems of both the old (11) and the new (13) standard. For example, when a new standard drive 14 is loaded into an old standard drive system 11, that old standard drive system 11 should work properly in response to the newly added features of the new standard. Therefore, the standard should be designed taking into account the need for continuous updating.

In view of this need, it is necessary to define rules that will allow the drive system to perform functions defined by the current standard, and rules that allow the same drive system to perform new functions that are not defined by the current standard. In the event that a future standard is created by adding a new function to the current standard, if the future drive system stores information on the disk regarding the operations that the current standard drive system needs to perform to perform the new function, this current standard drive system will be able to read information from the adapted drive to a new function, and perform operations for this new function.

From this point of view, a method of initializing or reinitializing the disk is desirable to enable different types of drive systems to use a disk adapted to a function that cannot be recognized by these drive systems. Initialization is a process running on an empty disk to initially use this empty disk. Re-initialization is the process performed on a used disk to reinitialize this used disk.

SUMMARY OF THE INVENTION

Aspects of the invention provide an optical recording medium, a recording and reproducing apparatus and method, an initialization method, and a reinitialization method that enhance compatibility between disks and drive systems of various standards.

According to an aspect of the present invention, there is provided an information recording medium including an access control area in which access control data is recorded, the access control data having general information set to enable a recording / reproducing apparatus that cannot recognize a predetermined function adapted to information recording medium, control access to this information recording medium, while the access control data regarding the function located Nava recording-reproducing apparatus recorded in the access control area, when the information recording medium is initialized or reinitialized.

According to an aspect of the present invention, general information of access control data regarding a recognizable function includes identifier of a recognizable function, formatability information regarding the information recording medium and information about recording / reproducing possibility regarding subareas defined on the information recording medium.

According to an aspect of the present invention, formatability information and recording-reproducing information is set to “formatted” and “recorded”, respectively.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus including a recording / reading module, recording data on an information recording medium or reading data from an information recording medium having an access control area, the access control data having common information set so that enable the recording / reproducing device that cannot recognize a predetermined function adapted to the information recording medium to control access to this information recording medium; and a control module controlling a write-read module for recording access control data regarding a function recognized by the recording-reproducing apparatus in the access control area when the information recording medium is initialized or reinitialized.

According to yet another aspect of the present invention, there is provided a recording-reproducing method, comprising the steps of: recording access control data in the access control area with respect to a function recognized by the recording-reproducing device when the information recording medium is initialized or reinitialized to enable use of the medium information recording, wherein the information recording medium has an access control area in which control data is recorded up to blunt, and the access control data have a common information set to allow any recording-reproducing apparatus that can not recognize a predetermined function adapted to the information recording medium to control access to this information recording medium.

According to another aspect of the present invention, there is provided a method for initializing an information recording medium, comprising the steps of recording initialization information for managing defects and managing a disc in a defect management area located on the information recording medium for managing defects encountered in a data area located on the information recording medium; and recording in the access control area located on the information recording medium, access control data regarding a function recognized by the recording / reproducing device, the access control data having general information set to enable any recording / reproducing device that cannot recognize a predetermined function adapted to the information recording medium, control access to this information recording medium.

According to an aspect of the present invention, the initialization information includes a disk description structure (DDS) containing information on a spare area that is assigned in the data area for recording data replacing defective data encountered in the data area and destination information on the user data area in which recorded user data in the data area; and a defect list (DFL) containing initial defect management information.

According to yet another aspect of the present invention, there is provided a method for reinitializing an information recording medium including determining whether the information recording medium can be reinitialized using the initialization information recorded in the defect management area located on the defect management information recording medium and disk management, and using access control data recorded in the access control area located on the recording medium information, and d these access controls have general information set to enable any recording / reproducing apparatus that cannot recognize a predetermined function adapted to the information recording medium to control access to this information recording medium; if it is determined that the information recording medium can be reinitialized, the initialization information is updated with the reinitialization information in the defect management area; and clearing the access control area and recording access control data in the access control area with respect to a function recognized by the recording / reproducing device.

According to an aspect of the present invention, the initialization information includes a DDS containing information on a spare area that is assigned in a data area for recording data replacing defective data encountered in a data area, and assignment information on a user data area in which user data is recorded in the area data; and a DFL containing initial defect management information.

According to an aspect of the present invention, the method further includes determining the size of the spare area as destination information regarding the spare area and determining the start address and end address of the user data area as destination information with respect to the user data area.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus including a recording / reading module writing data to an information recording medium or reading data from an information recording medium having an access control area in which access control data (ACD) is recorded and an area ACD status information in which information regarding either defectiveness or recording capability of the ACD unit containing the ACD is recorded, wherein the ACDs have general information set to provide the ability of the recording / reproducing apparatus that cannot recognize a predetermined function adapted to the information recording medium to control access to this information recording medium; and a control unit controlling the write-read unit for changing the state information with respect to the ACD unit when the information recording medium is reinitialized.

According to an aspect of the present invention, the control module changes state information indicating that the ACD has valid ACDs to status information indicating that the ACD has invalid ACDs and is available for recording ACD when the information recording medium is reinitialized.

According to an aspect of the present invention, the control module does not change the status information indicating that the ACD block is a defective block and the status information indicating that the ACD block is available for recording ACD when the information recording medium is reinitialized.

According to an aspect of the present invention, the control module changes the status information indicating that the ACD block has valid ACDs and a playback defect into status information indicating that the ACD block is a defective block when the information recording medium is reinitialized.

According to an aspect of the present invention, the control module controls the write / read module to record one of “00h” and “FFh” as an ACD identifier (ID) for indicating the validity of an ACD block included in an access control area when the information recording medium is reinitialized.

According to an aspect of the present invention, the control module controls the write / read module to read data from the ACD based on the status information regarding the ACD when the validity of the ACD indicated by the ACD is not consistent with the status information of the ACD.

According to an aspect of the present invention, when an error occurs when reproducing status information regarding an ACD unit, the control unit determines the validity of the ACD unit based on the ACD identifier.

According to yet another aspect of the present invention, there is provided a recording-reproducing method comprising the steps of writing data to an information recording medium or reading data from an information recording medium having an access control area in which ACDs are recorded and an ACD status information area in which recorded status information regarding either the defectiveness or the recording ability of the ACD unit containing the ACD, wherein the ACDs have general information set to enable recording i-playback, which cannot recognize a predetermined function adapted to the information recording medium, to control access to this information recording medium; and changing the status information regarding the ACD block when the information recording medium is reinitialized.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus including a recording / reading module, writing data to an information recording medium or reading data from an information recording medium having an access control area in which ACDs are recorded, wherein the ACDs have common information, set to enable the recording / reproducing apparatus that cannot recognize a predetermined function adapted to the information recording medium to control access m to this information recording medium; and a control module controlling a write-read module for writing a default ACD in the access control area when the information recording medium is initialized or reinitialized, the default ACDs including general information set to enable write-read with respect to subareas defined on information recording medium, and predetermined specific information.

According to an aspect of the present invention, at least a portion of the default ACD values are provided by at least one of the host computer and the control module.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus including a recording / reading module, writing data to an information recording medium or reading data from an information recording medium having an access control area in which ACDs are recorded, wherein the ACDs have common information, set to enable the recording / reproducing apparatus that cannot recognize a predetermined function adapted to the information recording medium to control access m to this information recording medium; and a control module controlling a write-read module for recording at least a default ACD among the ACDs regarding functions recognized by the recorder in the access control area when the information recording medium is initialized or reinitialized, wherein the ACDs include general information, set to enable write-read with respect to subareas defined on the information recording medium, and predetermined specific information.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus including a recording / reading module, writing data to an information recording medium or reading data from an information recording medium having an access control area in which ACDs are recorded, wherein the ACDs have common information, set to enable the recording / reproducing apparatus that cannot recognize a predetermined function adapted to the information recording medium to control access m to this information recording medium; and a control module controlling the write-read module for changing data in the ACD unit with respect to a function recognized by the recording / reproducing device to write a value indicating “available” to the ACD unit with respect to a function not recognizable by the recording / reproducing device among the ACDs in an access control area when the information recording medium is reinitialized.

According to an aspect of the present invention, the control module controls the write / read module to modify or erase the data in the ACD unit with respect to the recognizable function or to add a new ACD unit with respect to the new recognizable function according to the user’s request and to update status information regarding the ACD unit with respect to the recognizable function according to the result of one of these changes, erasing and adding.

According to an aspect of the present invention, an ACD block regarding a new recognizable function includes default ACDs that have general information set to enable write-read with respect to subareas defined on the information recording medium and predetermined specific information.

According to an aspect of the present invention, the control module controls the write / read module to write one of “00h” and “FFh” to the ACD unit with respect to the unrecognizable function to indicate that the ACD unit with respect to the unrecognizable function does not have valid data, and to change the state information regarding an ACD block regarding an unrecognized function to indicate that an ACD block regarding an unrecognized function is available.

According to yet another aspect of the present invention, there is provided a recording / reproducing method comprising the steps of writing a default ACD in an access control area when the information recording medium is initialized or reinitialized, wherein an access control area for recording therein is provided in the information recording medium ACDs and ACDs have general information set to enable a recorder that cannot recognize a predetermined function, adapt connected to the information recording medium, control access to this information recording medium; and wherein the ACDs by default include general information set to enable write-read with respect to subareas defined on the information recording medium and predetermined specific information.

According to yet another aspect of the present invention, there is provided a recording-reproducing method comprising the steps of recording at least a default ACD among ACDs in the access control area with respect to functions recognized by the recording-reproducing apparatus when the recording-reproducing apparatus initializes or reinitializes information recording medium, while in the information recording medium an access control area is provided for recording ACDs therein, and ACDs have general information set th for enabling recording-reproducing apparatus that can not recognize a predetermined function adapted to the information recording medium to control access to this information recording medium; and wherein the ACDs by default include general information set to enable write-read with respect to subareas defined on the information recording medium and predetermined specific information.

According to another aspect of the present invention, there is provided a recording-reproducing method, the method comprising the steps of: changing data in the ACD unit regarding a function recognized by the recording-reading apparatus in the access control area when the information recording medium is reinitialized; and writing a value indicating “available” in the ACD unit with respect to a function not recognized by the recording / reproducing apparatus in the access control area when the information recording medium is reinitialized, while an access control area for recording the ACD therein is provided in the information recording medium, and the ACDs have general information set to enable the recording / reproducing apparatus that cannot recognize a predetermined function adapted to the information recording medium by controlling Access to this recording medium.

Additional aspects and / or advantages of the invention will be set forth in the subsequent part of the description, and in part will become apparent from the description, or may be learned by practice of the invention.

List of drawings

The above and other features and / or advantages of the present invention will become more clear and more quickly appreciated with a detailed description of its embodiments with reference to the accompanying drawings, in which

Figure 1 is a diagram for explaining compatibility between disks and drive systems of various standards in traditional technology;

FIG. 2 is a diagram for explaining compatibility between disks and drive systems of various standards during initialization and reinitialization in accordance with an aspect of the present invention; FIG.

Figure 3 is an illustration of the structure of an optical disc recording medium in accordance with an aspect of the present invention;

4 is an illustration of an example of a detailed structure of a defect management area (DMA) No. 1 shown in FIG. 3;

5 is an illustration of an example of a detailed structure of an access control area (ACA) # 1 shown in FIG. 3;

FIG. 6 is an illustration of an example access control data (ACD) recorded in the ACA version 1.0 of the drive system shown in FIG. 2 during initialization or reinitialization; FIG.

FIG. 7 is an illustration of an example ACD recorded in ACA version 1.1 of the drive system shown in FIG. 2 during initialization or reinitialization; FIG.

FIG. 8 is an illustration of an example ACDs recorded in ACA version 1.2 of the drive system shown in FIG. 2 during initialization or reinitialization; FIG.

Fig. 9 is a schematic block diagram of a recording / reproducing apparatus performing initialization and reinitialization according to an embodiment of the present invention;

10 is a flowchart for an initialization method according to an embodiment of the present invention;

11 is a flowchart for a reinitialization method according to an embodiment of the present invention;

12 is an illustration of another example of a detailed DMA structure No. 1 shown in FIG. 3;

FIG. 13 is an illustration of an example ACD status information shown in FIG. 12;

14A and 14B are an illustration of examples of ACD blocks and ACD status information, respectively, before reinitializing a disk, to explain updating ACD status information when a disk is reinitialized, according to an aspect of the present invention;

15A and 15B illustrate examples of ACD blocks and ACD status information, respectively, after reinitializing a disk to explain updating the ACD status information when a disk is reinitialized, according to an aspect of the present invention;

FIG. 16 is a flowchart for a reinitialization method according to another embodiment of the present invention; FIG.

17 is an illustration of a default ACD structure in accordance with an aspect of the present invention;

Fig. 18 is a flowchart for an initialization method for a rewritable recording medium according to an embodiment of the present invention;

FIG. 19 is a flowchart for a reinitialization method for a rewritable recording medium according to an embodiment of the present invention; FIG.

20 is an illustration of a structure of a write-once recording medium according to an embodiment of the present invention;

21 is a flowchart for an initialization method for a write-once recording medium according to an embodiment of the present invention; and

FIG. 22 is a flowchart for a reinitialization method for a rewritable recording medium according to an embodiment of the present invention.

Detailed Description of Embodiments

Detailed references will now be made to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, where like reference numbers throughout refer to like elements. Embodiments are described below to explain aspects of the present invention by referring to the drawings.

FIG. 2 is a diagram for explaining compatibility between a disc and drive systems of various standards during initialization and reinitialization according to an aspect of the present invention. 2, the standard defined for a rewritable recording medium adapted to function A is called version 1.0, and the recording / reproducing apparatus implementing version 1.0 is called the drive system 21 of version 1.0. The updated standard, obtained by adding the new function B to version 1.0, is called version 1.1, and the recorder that implements version 1.1 is called the drive system 22 of version 1.1. The next updated standard, obtained by adding the new C function to version 1.1, is called version 1.2, and the recorder that implements version 1.2 is called the drive system 23 of version 1.2. Disc D is a rewritable recording medium for versions 1.0, 1.1, and 1.2.

System 21 of drive version 1.0 cannot recognize functions B and C. System 22 of drive version 1.1 cannot recognize function C. However, system 23 of drive version 1.2 can recognize both functions B and C. In this situation, when drive D is empty and initialized by system 21 drive version 1.0, this system 21 drive version 1.0 is required to initialize an empty drive D so that the initialized drive D can be recognized by both system 22 of drive version 1.1 and system 23 of drive version 1.2. When drive D is empty and initialized by drive system 22 of version 1.1 drive, drive system 22 of drive version 1.1 is required to initialize drive D so that the drive D can be recognized by drive 21 of version 1.0 and drive 23 of version 1.2. Similarly, when drive D is empty and initialized by drive system 23 of version 1.2, drive 23 of drive version 1.2 is required to initialize drive D so that the drive D can be recognized by drive 21 of version 1.0 and drive 22 of version 1.1.

To initialize an empty disk with some version of the drive system that is applicable to other versions of this drive system, information must be used that can be recognized by all versions of the drive system. According to an aspect of the present invention, a disk is initialized using a defect management area (DMA) and an access control area (ACA), which are provided in the initial area of the disk, so that the initialized disk can be recognized by different versions of the drive system. In other words, the initialization information is recorded in the DMA and ACA during disk initialization, so that the initialized disk can be appropriately used by different versions of the drive system based on this initialization information.

In FIG. 2, when drive D is initialized by system 21 of drive 1.0, since function A can be recognized by all of system 21 of drive 1.0, system 22 of drive 1.1 and drive 23 of drive 1.2, information about function A can be changed by system 22 drive version 1.1 and system 23 of the drive version 1.2 according to the intention of the user or manufacturer of the drive.

When the D drive is initialized by the drive system 22 of the version 1.1 drive, since the drive system 21 of the drive version 1.0 cannot recognize function B, information prescribing the operations to be performed by the drive system 21 of the drive version 1.0 with respect to function B is recorded in the ACA according to a rule or pattern that was done when version 1.0 was made. As a result, when the D drive adapted to function B is loaded into the system 1.0 of the drive 1.0, this system 21 of the drive version 1.0 can work in an appropriate manner, which makes it easy to use the drive D.

When the D drive is initialized by the drive system 23 of the version 1.2 drive, since the drive system 21 of the drive version 1.0 and the drive system 22 of the drive version 1.1 cannot recognize function C, information prescribing the operations to be performed by the drive system 21 of the drive version 1.0 and the drive system 22 of the drive version 1.1 with respect to the function C is written in the access control area according to the rule or scheme that was made when version 1.0 was made. As a result, when a drive D adapted to function C is loaded into a drive system 21 of a version 1.0 drive or a drive system 22 of a drive 1.1, a drive 21 of a drive version 1.0 and a drive system 22 of a drive version 1.1 can work in a suitable manner, thereby providing convenience when using a drive D In addition, information that prescribes the operations that the system 22 of the drive version 1.1 needs to perform with respect to function B is recorded in the ACA according to the rule or scheme that was made when version 1.0 was made. As a result, when the D drive adapted to function B is loaded into the system 1.0 of the drive 1.0, this system 21 of the drive version 1.0 can work in a suitable manner, thereby providing the convenience of using the drive D.

In the same way, you can reinitialize a used disk. To enable the drive system of different versions to recognize the used disk, this used disk is reinitialized using the DMA and ACA provided in the initial area of the used disk. However, reinitialization differs from initialization in that it is first determined whether the information recorded in the used disk allows you to reinitialize the used disk, even if the reinitialization command is entered by the user. Whether a reused disk is initialized can be determined based on the access control data (ACD) recorded in the ACA, which will be described in more detail later.

3 illustrates the structure of a disk 100 using an aspect of the present invention. 3, the disc 100 sequentially includes a start area 110, a data area 120, and an end area 130. The start area 110 includes a pre-recorded area 111 in which predefined data is recorded when the disc 100 is manufactured, a test area 112, ACA 113, DMA No. 2 114 and DMA No. 1 115. The pre-recorded area 111 can only be used for reading. Test area 112, ACA 113, DMA No. 114, and DMA No. 115 are areas in which data can be recorded and rewritten.

The pre-recorded area 111 stores information regarding the disc 100, which is recorded when the disc 100 is manufactured. For example, the pre-recorded area 111 stores a disc identifier, such as the factory number of the disc that identifies the disc 100. However, it is understood that additional data may be included in the pre-recorded area 111.

A test area 112 is provided for testing recording power or the like for optimal recording on the disc 100.

ACA 113 is provided for recording information prescribing operation of a drive system for a new function to be added subsequently. General information that allows a drive system that cannot recognize a specific function to access drive 100 is recorded in ACA 113, which will be described in more detail with reference to FIG.

DMA No. 115 and DMA No. 114 are provided for recording information regarding a defect occurring in the user data area (UDA) 122. DMA No. 115 and DMA No. 114 will be described in more detail with reference to FIG.

The data area 120 includes a backup area No. 0 121, UDA 122 and a backup area No. 1 123. UDA 122 is provided for recording user data. The spare area No. 0 121 and the reserve area No. 1 123 provide spare blocks replacing defective blocks occurring in the UDA 122. Such spare areas are allocated in the data area 122 during initialization or reinitialization of the disk 100. The final area 130 includes ACA No. 3 131 and ACA No. 4 132.

Figure 4 illustrates the detailed structure of ACA No. 1 115, shown in figure 3. 4, ACA No. 1 115 includes a disc description structure (DDS) 410 and a defect list (DFL) 420. DDS 410 includes disk management information. In more detail, the DDS 410 includes information 411 of the sizes of the spare areas and information 412 of the start and end addresses of the UDA as information recorded on the disk during initialization or reinitialization. When initializing or reinitializing the disk, the drive system allocates a spare area for the data area, determines UDA 112, in which user data is recorded in the data area, and writes information about the spare area and UDA 122 to DDS 410. DFL 420 contains information about a defect that occurred in UDA 122. For example, DFL 420 includes the address of the defective block that originated in UDA 122, the address of the spare block replacing the defective block, and status information regarding this defect.

FIG. 5 illustrates the detailed structure of ACA 113 shown in FIG. 3. 5, ACA 113 includes ACD No. 1,510, ACD No. 2,520, and ACD No. 3,530. ACA 113 is an area in which general information used to access a disk is recorded, regardless of an existing or new standard. In other words, the ACA 113 maintains a general information table that applies generally to all functions used in existing standards and new standards. Although not required in all aspects, the ACA provides a table of general information regarding each function. For example, ACD No. 1,510 compiles a table of general information regarding “function 1”, ACD No. 2,520 compiles a table of general information regarding “function 2”, and ACD No. 3,530 compiles a table of general information regarding “function 3”. Function 1 may not be recognized by the drive system, and function 2 and function 3 may not be recognized by the drive system. The ACD may also include specific information that only the drive system recognizing a function corresponding to the ACD can recognize.

ACD No. 1 510 includes general information 511 and specific information 512. General information 511 includes an ACD identifier (ACD_ID) 513 (i.e., an identifier identifying an ACD), formatability information 514 indicating whether the disk can be formatted, information 515 about the possibility of recording / reproducing, indicating whether the DMA is recordable or only reproducible, information 516 about the possibility of recording / reproducing a reserve area indicating whether the reserve area is recordable or only reproducible, and UDA recording / reproducing formation 517 indicating whether the UDA is recordable or only reproducible. Information 514 about the possibility of formatting, information 515 about the possibility of recording / reproducing DMA, information 516 about the possibility of recording and reproducing the reserve area and information 517 about the possibility of recording and reproducing the UDA constitute a table of general information.

The drive system may determine, based on ACD_ID 513, whether ACD No. 1,510 is a recognized function data. In other words, if the drive system knows ACD_ID 513, ACD No. 1,510 is defined as data about a recognized function. Otherwise, ACD No. 1,510 is defined as data about an unrecognized function. In addition, even though the drive system does not know ACD_ID 513, this drive system can perform at least the minimum necessary operations with respect to an unrecognized function based on the fields included in the general information table.

ACD No.2 520 includes general information 521 and specific information 522. General information 521 includes ACD_ID 523 and a general information table containing formatting information 524, DMA recording and reproducing information 525, recording ability information 526- playback of the spare area and information 527 about the possibility of recording-playback of the UDA.

ACDs recorded in ACA 113 when a disk is initialized or reinitialized by each of the drive systems 21-23 under the conditions illustrated in FIG. 2 will be described below with reference to FIGS. 6 and 7.

FIG. 6 illustrates an example of ACDs recorded in ACA 113 by the drive system version 1.0 of FIG. 2 of FIG. 2 during initialization or reinitialization. 6, the drive system 21 of version 1.0 knows only function A and thus only writes ACD No. 610 regarding this function A to ACA 113. After writing ACD No. 610 to ACA 113 is completed, system 21 of drive version 1.0 fills in the remaining unwritten area 620 characters 00h. The unrecorded area 620 may also be filled with FFh symbols according to an aspect of the invention. The unrecorded area 620 is filled with 00h or FFh to indicate that the ACA 113 no longer has ACD, and to allow the use of the unrecorded area 620 afterwards.

ACD No. 1 610 includes general information 611 and specific information 612. General information 611 includes ACD_ID 613 as an identifier for ACD No. 610, in which "A" is written indicating function A, known to drive system 21 of version 1.0, and also includes a general information table containing formatting information 614, DMA recording and reproducing information 615, reserve area recording and reproducing information 616, and UDA recording and reproducing information 617 that were established vayutsya to zero (0) indicating "writable". Since initialization or reinitialization is performed to permit the use of the disc, all of the formatability information and the recordability information are set to “recordable”.

Since function A, whose contents are contained in ACD No. 610 recorded in ACA 113 of the initialized drive D, can be recognized by all of the systems 21-23 of the drive, ACD No. 1 610 can be changed by the user or manufacturer of the drive when the initialized disk D is loaded into any of the systems 21-23 drive and is used in it.

FIG. 7 illustrates an example of ACDs recorded in ACA 113 by the drive system version 1.1 shown in FIG. 2 during initialization or reinitialization. 7, the drive system 22 of version 1.1 knows function A and function B, and thus writes ACD No. 710 with respect to function A and ACD No. 720 with respect to function B in ACA 113. After recording is completed, ACD No. 710 and ACD No. 2 720 in ACA 113, drive system 1.1, version 1.1, fills the remaining unwritten area with 730 characters 00h or FFh.

ACD No. 1 710 includes general information 711 and specific information 712. General information 711 includes ACD_ID 713 as an identifier for ACD No. 1 710, in which “A” is written indicating function A, known to drive system 22 of version 1.1, and also includes a general information table containing formatting information 714, DMA recording and reproducing information 715, reserve area recording and reproducing information 716, and UDA recording and reproducing information 717 that were established vayutsya to zero (0) indicating "writable". Since initialization or reinitialization is performed to permit the use of the disc, all of the formatability information and the recordability information are set to “recordable”.

ACD No. 2 720 includes general information 721 and specific information 722. General information 721 includes ACD_ID 723 as an identifier for ACD No. 2 720, in which "B" is written indicating function B, known for the drive system 22 of version 1.1, and also includes a general information table containing formatting information 724, DMA recording and reproducing information 725, reserve area recording and reproducing information 726, and UDA recording and reproducing information 727 that were established vayutsya to zero (0) indicating "writable".

Since function A, whose contents are contained in ACD No. 710 recorded in ACA 113 of the initialized drive D, can be recognized by all of the systems 21-23 of the drive, ACD No. 710 can be changed by the user or manufacturer of the drive when the initialized disk D is loaded into any of the systems 21-23 drive and is used in it. Function B, regarding which ACD No. 2 720 is recorded in ACA 113, cannot be recognized by system 1.0 of drive 1.0, but system 21 of drive 1.0 can operate to access initialized drive D using general information 721 included in ACD No. 2 720.

FIG. 8 illustrates an example of ACDs recorded in ACA 113 by the version 1.2 drive system shown in FIG. 2 during initialization or reinitialization. In Fig. 8, the drive system 23 of version 1.2 knows function A, function B and function C and thus writes ACD No. 810 with respect to function A, ACD No. 2 820 with respect to function B and ACD No. 3 830 with respect to function C in ACA 113 After that, the drive system 23 of the version 1.2 drive fills the remaining unrecorded area 840 with the characters 00h or FFh.

ACD No. 1 810 includes general information 811 and specific information 812. General information 811 includes ACD_ID 813 as an identifier for ACD No. 1 810, in which “A” is written indicating function A, known to system 23 of drive version 1.2, and also includes a general information table containing formatting information 814, DMA recording and reproducing information 815, reserve area recording and reproducing information 816 and UDA recording and reproducing information 817 that were established vayutsya to zero (0) indicating "writable". Since initialization or reinitialization is performed to permit the use of the disc, all of the formatability information and the recordability information are set to “recordable”.

ACD # 2 820 includes general information 821 and specific information 822. General information 821 includes ACD_ID 823 as an identifier for ACD # 2 820, in which “B” is written indicating function B, known for drive system 23 of version 1.2, and also includes a general information table containing formatting information 824, DMA recording and reproducing information 825, reserve area recording and reproducing information 826, and UDA recording and reproducing information 827 that were established vayutsya to zero (0) indicating "writable".

ACD # 3 830 includes general information 831 and specific information 832. General information 831 includes ACD_ID 833 as an identifier for ACD # 3 830, in which “C” is written indicating the function C known to drive system 23 of version 1.2, and also includes a general information table containing formatting information 834, DMA recording and reproducing information 835, reserve area recording and reproducing information 836 and UDA recording and reproducing information 837 which were established vayutsya to zero (0) indicating "writable".

Since function A, whose contents are contained in ACD No. 1810 recorded in ACA 113 of the initialized D disk, can be recognized by all of the systems 21-23 of the drive, ACD No. 1810 can be changed by the user or manufacturer of the drive when the initialized disk D is loaded into any of the systems 21-23 drive and is used in it. Function B, regarding which ACD No. 2,820 is recorded in ACA 113, cannot be recognized by drive system version 1.0 1.0, but drive system version 21 1.0 can operate to access the initialized drive D using general information 821 included in the ACD No. 2 820. Function C, regarding which ACD No. 3,830 is recorded in ACA 113, cannot be recognized by system 21 of drive version 1.0 and system 22 of drive version 1.1, but system 21 of drive version 1.0 and system 22 of drive version 1.1 can work to implement access to initialized drive D with using general information 831 included in ACD # 3 830.

9 is a schematic block diagram of a recording / reproducing apparatus according to an embodiment of the present invention. According to Fig.9, the recording-reproducing device includes a recording-reading module 2 and a control module 1. The write-read module 2 includes a head and writes data to a disk 100 and reads data from a disk 100, which is an optical recording medium of the present invention. The control unit 1 controls the write / read unit 2 for writing data to the disk 100 and reading data from the disk 100 according to a predetermined file system. More specifically, the control unit 1 controls to initialize an empty disk and to reinitialize a used disk. The control module 1 includes a system controller 10, a host computer interface 20, a digital signal processor (DSP) 30, a high-frequency (RF) amplifier 40, and a servo drive 50.

During recording, the host computer interface 20 receives a predetermined write command from the host computer 3 and transmits the received command to the system controller 10. The system controller 10 controls the DSP 30 and the servo drive 50 to execute the write command received from the host computer interface 20. The DSP 30 adds additional data, such as parity, to the data to be recorded received from the host computer interface 20, performs error correction coding (ECC) to generate an ECC block for error correction, and modulates the ECC module in a predetermined mode. The RF amplifier 40 converts the data output from the DSP 30 into an RF signal. The write-read module 2, including a head, writes the RF signal received from the RF amplifier 40 to the disk 100. The servo drive 50 receives a servo control command from the system controller 10 and performs servo control on the head included in the read-write module 2.

During playback, the host computer interface 20 receives a read command from the host computer 3. The system controller 10 performs the initialization necessary for playback. The write-read module 2 emits a laser beam to the disk 100 and outputs an optical signal obtained from the laser beam reflected from the disk 100. The RF amplifier 40 converts the optical signal received from the write-read module 2 into an RF signal, and supplies modulated data received from the RF signal to the DSP 30 and supplies the servo signal obtained from the RF signal to the servo 50. The DSP 30 demodulates the modulated data and provides data obtained by performing ECC encoding with respect to the demodulated data. Meanwhile, the servo drive 50 receives the servo signal from the RF amplifier 40 and the servo control command from the system controller 10 and provides servo control of the head. The host computer interface 20 transmits data from the DSP 30 to the host computer 3. The system controller 10 reads the disc management information or defect information from the disc 100 and controls the servo 50 to read data from the position where the data was recorded without defects on the disc 100.

According to aspects of the invention, the recording / reproducing apparatus illustrated in FIG. 9 can be implemented as a separate recording device, a separate reproducing device, as a single recording and reproducing device, as a stand-alone device and / or as part of a computer system.

An exemplary initialization method and an exemplary reinitialization method that are performed by the recording / reproducing apparatus according to an embodiment of the present invention will be described below with reference to FIGS. 10 and 11.

10 is a flowchart for an initialization method according to an embodiment of the present invention. 10, in operation 1010, a disk 100, which is empty, is loaded into a drive system. In operation 1020, a system controller 10 included in the drive system receives an initialization command from the host computer 3 via the host computer interface 20. The system controller 10 in step 1030 assigns a spare area in the data area of the disk 100 to determine the size of the spare area, and in step 1040 assigns a UDA to record user data in the data area to determine the starting address and ending address of the UDA. The spare area may be assigned by the host computer 3 or may be assigned with a predetermined size by the manufacturer of the drive.

In operation 1050, the system controller 10 controls the write-read module 2 and the servo 50 for recording a DDS, which includes information on the purpose of the spare area and information on the purpose of the UDA, and the initial DFL in the DMA included in the initial area of the disk 100. Initialization information, recorded in the DMA is described in detail with reference to figure 4.

In operation 1060, the system controller 10 controls the write / read module 2 and the servo drive 50 to record a function that can be recognized by the drive system in the ACA included in the initial area of the disk 100. The access control information recorded in the ACA is described in detail with reference to FIG. 5.

In operation 1070, the system controller 10 controls the write / read module 2 and the servo 50 to fill the unrecorded area remaining in the ACA of the disk 100 with a predetermined value, such as 00h or FFh.

11 is a flowchart for a reinitialization method according to an embodiment of the present invention. 11, in operation 1110, the disk 100 that was used is loaded into the drive system. Then, the system controller 10 included in the drive system recognizes the DMA information and information prescribing the operations to be performed by the drive system with respect to a function that the system controller 10 knows and a function that the system controller 10 does not know (i.e., ACD) recorded on the disc 100. Subsequently, in operation 1120, the system controller 10 receives the reinitialization command from the host computer 3 via the host computer interface 20.

In operation 1130, the system controller 10 controls the read / write module 2 to read information recorded in the DMA and ACA, which are included in the initial area of the disk 100, and transfers this information. The information recorded in the DMA may be a write protection flag, and the information recorded in the ACA may be information regarding the recording capability or formatting that is included in the general ACD information.

In operation 1140, the system controller 2 determines whether the information read from the DMA and ACA allows reinitialization. For example, if the write protection flag read from the DMA is “1”, writing to the disk 100 is prohibited, and thus re-initialization cannot be performed, so an error message is transmitted in operation 1190. The general ACD information recorded in the ACA includes formatting information and recording-reproducing information regarding the sub-areas of the disc 100. If the formatting information and the recording-reproducing information do not allow formatting the disc 100 or writing to any from the subareas of the disk 100, reinitialization cannot be performed, so an error message is transmitted in operation 1190. Accordingly, the system controller 10 determines whether the disc 100 is rewritable, based on information read from the DMA and ACA.

If the write protection flag is set to “1” or if the general ACA information does not allow formatting or recording, the system controller 10 determines that the disk 100 cannot be reinitialized and transmits an error message to the host computer 3 via the host computer interface 20 operations 1190. However, if the write protection flag is not set to “1”, and the general ACD information allows formatting and recording, the system controller 10 decides to reinitialize the disk 1000 and starts reinitializing the disk 100.

Meanwhile, when ACDs with respect to functions that can be recognized by the drive system have values that do not allow reinitialization, and ACDs with respect to functions that cannot be recognized by the drive system have values that allow reinitialization, ACDs with respect to recognizable functions can change to values that allow reinitialization in response to a user request for reinitialization, since ACD values relative to recognized functions can update b, and then a decision can be made to reinitialize the disk 100.

If reinitialization is enabled, the system controller 10 assigns in step 1150 a spare area in the data area of the disk 100 to find the size of the spare area during operation, and assigns a UDA to record user data in the data area to determine the starting address and ending address of the UDA.

In operation 1160, the system controller 10 controls the write-read module 2 for cleaning the DMA included in the initial region of the disk 100, and controls the write-read module 2 and a servo drive 50 for writing the initial DFL and DDS to the DMA including the information so determined, those. reserve area destination information and UDA destination information. Although it has been described that the initialization information is recorded in the DMA after it is cleared, in fact, the initialization information recorded in the DMA is updated since the disc 100 is a rewritable type disc. Although not shown in FIG. 11, file system information recorded in a predetermined portion of the UDA must be cleared to manage data recorded in the UDA.

In operation 1170, the system controller 10 controls the write / read module 2 for cleaning the ACA in the initial region of the disk 100 and controls the write / read module 2 and the servo 50 to write the ACD with respect to a function that the drive system can recognize in the ACD in the initial region of the disk 100.

In operation 1180, the system controller 10 controls the write-read module 2 and the servo 50 to fill the unrecorded area remaining in the ACA in the initial area on the disk 100 with a predetermined value, such as 00h or FFh. Step 1180 is performed to indicate that there is no longer an ACD in the ACA, and to allow use of the unrecorded area subsequently.

The following description relates to a method for updating the status information of an ACD unit during reinitialization of a disc when managing state information regarding the possibility of recording or defective ACD unit in an ACA. When the status information of each of the ACDs included in the ACA for ACD recording is recorded in the DDS and control is performed with respect to it, control can be effectively performed with respect to the ACDs. The status information may indicate that ACDs may be recorded in an ACD unit, that an ACD unit is defective or stores invalid ACDs, that an ACD unit stores valid ACDs, and that an ACD unit stores valid ACDs, but has a defect that occurred during playback. An ACD physically recorded in an ACA has an ACD_ID from which the drive system can recognize which function the ACD belongs to. When the disk is loaded into the drive system, the drive system detects the position of the valid ACD block based on the status information of the ACD block included in the DDS recorded in the DMA on the disk, and reproduces the valid ACD block.

If the status information of the ACD block indicating that the ACD block has valid ACDs is included in the DDS before reinitialization, the ACD block is accurate. After reinitialization, since the ACDs recorded in the ACDs are not necessary, the status information of the ACDs needs to be changed to indicate that the ACDs do not have valid ACDs and can be used to write ACDs. If the ACD unit status information included in the DDS to indicate that the ACD unit has valid ACDs does not change during reinitialization, the drive system will play the ACD unit based on the status information of the ACD unit. Accordingly, it is necessary to update such ACD block state information when the disk is reinitialized. In addition, since the information included in the ACD block is no longer valid after reinitialization, if the status information of the ACD block does not change, the drive system may have difficulties due to incorrect information received from the ACD block. Accordingly, in addition to changing the status information of the ACD block included in the DDS, the entire ACD block in the ACA or only the ACD_ID in the ACD needs to be rewritten with a value of, for example, “00h” or “FFh” for physical erasure. When ACD_ID is set to “00h” or “FFh”, the current ACDs of the ACDs are not valid and the ACDs can be used to write other ACDs. Since “00h” or “FFh” is recorded in the ACD block when this ACD block is cleared, the ACD_ID of the ACD block is set to “00” or “FF”.

In short, during reinitialization, the valid ACD block in the ACA on the disk is overwritten with a value such as “00h” or “FFh”, and the corresponding ACD block status information included in the DDS on the disk is changed to indicate that the ACD does not have a valid ACD and can be used to record other ACDs.

FIG. 12 illustrates another example of the detailed structure of DMA No. 1 115 shown in FIG. 3. 12, a DDS 410 is an area in which disc management information is recorded. The spare area size information 411, the UDA start and end address information 412, and the ACD status information 413 are recorded in the DDS 410. The ACD status information 413 includes status information regarding the recording or defectiveness of each of the ACD units in which the ACD is recorded in the ACA. 12, the status information of the ACD block is two bits in length.

FIG. 13 illustrates ACD block status information included in ACD status information, such as block status information shown in FIG. 13, the state of each ACD block is expressed in two bits, i.e. “00,” “01,” “10,” or “11,” indicating one of four states. Bits “00” indicate that the ACD block is available for recording ACD. Bits “01” indicate that the ACD block is defective. More specifically, bits “01” indicate that the ACD is detected as defective while the ACDs are being written to the ACA, or that the ACD has valid ACDs. The “10” bits indicate that the ACD has valid ACDs but is identified as defective while the ACDs are being played from the ACA. The 11 bits indicate that the ACD has valid ACDs.

14A-15B are diagrams for explaining updating ACD status information when a disk is reinitialized according to the present invention. 14A and 14B illustrate examples of ACD blocks and ACD status information, respectively, before reinitialization. 15A and 15B illustrate examples of ACD blocks and ACD status information, respectively, after reinitialization.

On figa before re-initialization of the ACA includes five ACD blocks: ACD block No. 1, having a valid ACD; ACD block No. 2 having defective ACDs; ACD block No. 3 having valid ACDs, ACD block No. 4 having no data, or having one of “00” or “FF” as the value of ACD_ID; and ACD unit No. 5 having valid ACDs and having a defect occurring during reproduction (hereinafter referred to as a defect in reproduction). An ACD_ID of “00” or “FF” indicates that although data has been recorded in the ACD block, the ACD can be written in the ACD block later because the data in the ACD block is not valid.

FIG. 14B illustrates status information regarding ACD blocks No. 1-5 shown in FIG. 14A. According to FIG. 14, bits “11” are recorded as the status information of ACD block No. 1 to indicate that the ACD block No. 1 has valid ACDs. The “01” bits are recorded as the status information of the ACD block No. 2 to indicate that the ACD block No. 2 is defective. Bits “11” are recorded as the status information of the ACD block No. 3 to indicate that the ACD block No. 3 has valid ACDs. The “00” bits are recorded as the status information of the ACD block No. 4 to indicate that the ACD block No. 4 is available for recording ACD because the ACD block No. 4 does not have data recorded therein or has invalid data. Bits “10” are recorded as the status information of the ACD unit No. 5 to indicate that the ACD unit No. 5 has valid ACD and playback defect.

The ACDs and ACD status information shown in FIGS. 14A and 14B change when the disk is reinitialized, as shown in FIGS. 15A and 15B.

On figa after reinitialization only the ACD block No. 2, which was defective, remains in the state before the reinitialization, but the remaining ACD blocks, i.e. valid ACD blocks, ACD blocks having “00” or “FF” as the ACD_ID value, and a playback defective ACD block acquire “00” or “FF” as their ACD_ID value so that these ACD blocks can be used after reinitialization. An unwritten block that has no data before reinitialization remains the same as it was, even after reinitialization.

FIG. 15B illustrates state information regarding ACD blocks No. 1-5 shown in FIG. 15A. 15B, the bits of the status information of the ACD block No. 1, the status information of the ACD block No. 3, and the status information of the ACD block No. 4 are changed to “00” to indicate that the ACD blocks No. 1, 3, and 4 are available for recording ACD because ACD blocks No. 1, 3 and 4 do not have data recorded in them or have invalid data. Bits “01” indicating that the ACD block No. 2 is defective remain as status information of the ACD block No. 2. The status information bits of the ACD block No. 5 are changed to “01”, since the ACD block No. 5 has a playback defect. When the ACD block has a playback defect, the ACD_ID of the ACD blocks is “00h” or “FFh”, indicating that this ACD block is available for 2 recordings, and status information regarding this ACD block is expressed by “01” bits indicating the defective block. In this situation, when the ACD_ID of the ACD block does not correspond to the state information regarding the ACD block, this ACD block is unavailable due to a defect, since the state information is taken into account before the ACD_ID. However, when the state information cannot be allocated due to an error in reproducing this state information, an ACD unit having “00h” or “FFh” as its ACD_ID is available.

In the above arrangement, the state indicated by ACD_ID for the ACD contained in the ACD unit in the ACA on the disk may not be consistent with the state indicated by the corresponding status information of the ACD unit recorded in the DDS on the disk. In this case, the drive system is designed to rely primarily on the status information of the ACD unit recorded in the DDS. This will be described in detail below.

The status of the ACD block can be found from the corresponding status information of the ACD block recorded in the DDS and the ACD_ID of the ACD block recorded in the ACA. If these two types of information do not match, the drive system primarily relies on the status information of the ACD block recorded in the DDS. When data cannot be reproduced from DDS to DMA due to, for example, a defect occurring in the DMA, the drive system determines the validity of the information contained in the ACD unit based on the ACD_ID recorded in the ACA. Discrepancies between the two types of information may arise due to a defect occurring during recording. For example, when a valid ACD is entered into the ACD block A, the state of the ACD block A is entered into the DDS as “11”. After that, if a defect occurs when the updated ACDs are written to the ACD block A in response to a request to update the ACD block A, the drive system records the status information regarding the ACD block A as information indicating the defective block. However, the updated ACDs are not recorded in the ACD block A due to a defect during recording, and the ACD block A still has valid ACDs. As a result, the ACD_ID of the valid ACD remains in the ACD block A in the ACA. In this case, first of all, you need to access the status information of the ACD block to prevent erroneous operation of the system.

However, when the status information of the ACD block in the DDS becomes unreliable due to a failure to correct an error occurring in reproducing data from the DDS, it is preferable but not required that the validity of the corresponding ACD block be determined based on the ACD_ID for the ACDs contained in the ACD block in the ACA.

FIG. 16 is a flowchart for a reinitialization method according to another embodiment of the present invention. In FIG. 16, in operation 1610, the disk 100 that was used is loaded into the drive system. Then, the system controller 10 included in the drive system recognizes the DMA information and information prescribing the operations to be performed by the drive system with respect to a function that the system controller 10 knows and a function that the system controller 10 does not know (i.e., ACD, recorded on disc 100). Following this, in operation 1620, the system controller 10 receives the reinitialization command from the host computer 3 via the host computer interface 20.

In operation 1630, the system controller 10 controls the write-read module 2 to read information recorded in the DMA and ACA, which are included in the initial area of the disk 100, and transfers this information. For example, the information recorded in the DMA may be a write protection flag, and the information recorded in the ACA may be information regarding the recording capability or formatting capability that is included in the general ACD information.

In operation 1640, the system controller 10 determines whether the information read from the DMA and ACA allows reinitialization. For example, if the write-protect flag read from DMA is set to “1”, writing to disc 100 is prohibited, and re-initialization cannot be performed. The general information of the ACDs recorded in the ACA includes formatting information and recording-reproducing information regarding sub-regions of the disc 100. If the formatting information and the recording-reproducing information do not allow formatting of the disk 100 or recording to any of the sub-regions drive 100, reinitialization cannot be performed. Accordingly, the system controller 10 determines whether the disc 100 is recordable based on information read from the DMA and ACA.

If the write protection flag is set to “1” or if the general ACD information does not allow formatting or recording, the system controller 10 determines that the disk 100 cannot be reinitialized and transmits an error message to the host computer 3 via the host computer interface 20 in operation 1680 However, if the write protection flag is not set to “1” and the general ACD information allows formatting and recording, the system controller 10 decides to reinitialize the disk 100 and starts reinitializing the disk 100.

Meanwhile, when ACDs with respect to functions that can be recognized by the drive system have values that do not allow reinitialization, and ACDs with respect to functions that cannot be recognized by the drive system have values that allow reinitialization, ACD values with respect to recognized functions can change to values that allow reinitialization in response to a user request for reinitialization, since ACD values relative to recognized functions may begin from scratch, then it may be decided to start re-initialize the disk 100.

If reinitialization is enabled, the system controller 10 assigns a spare area in the data area of the disk 100 to find the size of the spare area and assigns a UDA to write user data in the data area to determine the start address and end address of the UDA in operation 1650. In operation 1660, the system controller 10 controls a read / write module 2 for cleaning an ACA included in the initial region of the disk 100, and updates the ACD status information. In more detail, when cleaning the ACA, the system controller 10 only maintains the status information of the ACD block when the corresponding ACD block is defective, and fills the remaining ACD blocks in the ACA with the characters “00h” or “FFh” or changes the ACD_ID of each of the other ACD blocks to “00h” or “ FFh ”to indicate that the remaining ACD blocks are available. In addition, the system controller 10 updates the ACD status information, as described with reference to FIGS. 14A-15B, to reflect the changed states of the ACD blocks.

In operation 1670, the system controller 10 controls the write-read module 2 to clear the ACA included in the start area on the disk 100, and controls the write-read module 2 and the servo 50 to write the initial DFL and DDS including certain information in the DMA (i.e. backup area destination information and UDA destination information), and updates the ACD status information. Although it has been described that the initialization information is recorded in the DMA after it is cleared, in fact, the initialization information recorded in the DMA is updated since the disc 100 is a rewritable type disc. Although not shown in FIG. 16, file system information recorded in a predetermined portion of the UDA must be cleared to manage data recorded in the UDA.

Next, the default ACD will be described. ACDs can be split into recognized ACDs and unrecognized ACDs according to whether the drive system supports ACDs (i.e., whether the drive system can recognize a function corresponding to ACDs). Recognized ACDs include default ACDs that all drive systems that support ACDs must support. Such ACDs, by default, can be written to the ACA during initialization or reinitialization of the disk and can be used efficiently. Compared to the ACD for a predefined function (such as write protection or playback protection), the ACDs by default contain initialization information used to access the storage medium when this storage medium is initialized or reinitialized.

17 illustrates a default ACD structure in accordance with an aspect of the present invention. 17, the default ACD 1700 is recorded in the ACA part. Default ACDs 1700 have a default property and the same structure as regular ACDs. The default ACDs 1700 include general information 1710 and specific information 1720.

ACD_ID 1711 is included in the general information 1710 and is written as "DEFAULT" to indicate the default ACD. Other information (i.e., formatability information 1712, DMA recording and reproducing information 1713, reserve area recording and reproducing information 1714 and UDA recording and reproducing information 1715) is set to zero (0) to enable free use of subareas defined on disk. General information 1710 is almost the same as general information for ACDs with a predefined function.

Specific information 1720 may be recorded during initialization or reinitialization according to the intention of the user or drive system. Specific information 1720 relates to disc information, while specific information for an ACD having a specific function is data about a predetermined function, such as write protection or playback protection. Specific information 1720 may include a drive identifier and a recording date. The drive ID can be supplied from the drive system, and the recording date can be supplied from the host computer. When the recording date and drive ID enter specific 1720 ACD information by default 1700, you can easily find out which drive system initializes the drive. However, other types of information may be included in specific information 1720 according to the intention of the user or the drive system.

FIG. 18 is a flowchart for an initialization method for a rewritable recording medium according to an embodiment of the present invention. 18, in operation 1810, an empty disc is loaded into the drive system. In operation 1820, the drive system receives an initialization command from the host computer according to a user request to initialize the disk. In operation 1830, the drive system writes the default ACD to the ACA on the disk in response to an initialization command. Default ACD recording can be done automatically by the system controller that is part of the drive system, or it can be done by recording information that is supplied by the host computer to set the default ACD in response to the write command. Alternatively, the two methods may be combined. It is preferable, but not required, that all recording-reproducing capability information included in the general information in the ACD by default be set to zero (0) to indicate that the disc is recordable-playable. The specific information included in the ACD by default can be set to the proper values according to the intention of the user or the drive system.

In operation 1840, a spare area is assigned in the data area of the disk to replace the defective unit during defect management. In operation 1850, a start address and an end address of a UDA are determined in the data area. In operation 1860, the initial DFL and DDS are written to the disc in the DMA, including the default ACD assignment information, UDA size information, and ACD status information after the default ACD is written. Since only ACDs are written to the ACA by default, ACD status information may include ACD block status information indicating that the ACD corresponding to the default ACD has valid ACDs and ACD block status information indicating that the remaining ACDs are in the ACA available.

In operation 1870, the initial file system information for managing data to be written to the UDA is recorded in the UDA in response to a write command from the host computer. Operation 1870 may be performed in any of the previously described operations.

FIG. 19 is a flowchart for a reinitialization method for a rewritable recording medium according to an embodiment of the present invention. 19, in operation 1910, the disk 100 that was used is loaded into the drive system. In operation 1920, a system controller 10 included in the drive system receives a reinitialization command from the host computer 3 via the host computer interface 20. In operation 1930, the system controller 10 controls the write / read module 2 to read information stored in the DMA and ACA, which are included in the initial area of the disk 100, and transfers the information. In operation 1940, the system controller 10 determines whether reinitialization of information read from the DMA allows.

If it is determined that this information does not allow reinitialization, the system controller transmits an error message to the host computer 3 through the host computer interface 20 in operation 1980. However, if it is determined that this information enables reinitialization, in operation 1950, the system controller 10 assigns a backup the area in the data area of the disk 100 to determine the size of the backup area, and assigns the UDA to record user data in the data area to determine the start address and end address of the UDA.

In operation 1960, the system controller 10 controls the write / read module 2 to clear the ACDs entering the start area on the disk 100, and writes the default ACDs or overwrites the default ACDs recorded during initialization with new default ACDs. Here, system controller 10 may or may not clear all ACD blocks in the ACA before writing the default ACD. Since the default ACDs are recorded during initialization, and the default ACDs are set appropriately according to the user's intention, while the drive 100 is in use, the default ACDs recorded before re-initialization can be overwritten with the values set appropriately according to the user's intent reinitialize drive 100. It is preferable, but not required, that all recording-playback information included in the general information in the ACD by default be set to dropped to zero (0) to indicate that the disc 100 has a record-play capability. In addition, the specific information included in the ACD by default can be set to proper values according to the intention of the user or drive system.

In operation 1970, the system controller 10 controls the write-read module 2 to clear the DMA in the initial area and controls the write-read module 2 and the servo 50 to write the initial DFL and DDS including the spare area assignment information, the UDA size information, and the DMA Updated ACD status information.

In operation 1990, the system controller 10 reinitializes the file system information that is recorded in the UDA to reinitialize the information for managing data recorded in the UDA in response to a write command from the host computer 3.

FIG. 20 illustrates the structure of a write-once recording medium 200 according to an embodiment of the present invention. 20, a write-once recording medium 200 includes a start area 210, a data area 220, and an end area 230. The start area 210 includes a pre-recorded area 211, a test area 212, ACA 213, DMA No. 1 215, DMA No. 2 214 and a temporary DMA (TDMA) 216. The data area 220 includes a backup area No. 0 221, UDA 222, a backup area No. 1 223. The final area includes a DMA No. 3 231 and a DMA No. 4 232.

The write-once recording medium 200 has substantially the same structure as the disc 100 shown in FIG. 3, except that the write-once recording medium 200 further includes TDMA 216. Temporary DDS (TDDS) is recorded in TDMA 216, temporary DFL (TDFL) and data management record (RMD). During initialization, as shown in FIG. 20, the TDMA 216 includes an initial TDDS 217 containing reserve area assignment information, UDA size information, and ACD status information; initial TDFL 218 containing initial defect management information; and initial RMD 219 containing initial recording management information.

FIG. 21 is a flowchart for an initialization method for a write-once recording medium according to an embodiment of the present invention. 21, in operation 2110, an empty write-once disc is loaded into the drive system. In operation 2120, the drive system receives an initialization command from the host computer according to a user request to initialize the disk.

In operation 2130, the drive system writes the default ACD to the ACA on the disk in response to an initialization command. Default ACD recording can be done automatically by the system controller that is part of the drive system, or it can be done by recording information that is supplied by the host computer to set the default ACD in response to the write command. Alternatively, the two methods may be combined. It is preferable, but not required, that all ACD recording-reproducing information is set to zero (0) by default to indicate that the disc is recordable-playable. The specific information included in the ACD by default can be set to appropriate values according to the intent of the user or drive system.

In operation 2140, a spare area is assigned to the data area on the disk to replace the defective unit in the defect management process. In operation 2150, a start address and an end address of a UDA are determined in the data area. In operation 2160, TDDSs are written to the TDMA on the disc, including backup area assignment information, UDA size information, and ACD status information after writing the default ACD, initial TDFL, and initial RMDs. Since only ACDs are written to the ACA by default, ACD status information may include ACD block status information indicating that the ACD corresponding to the default ACD has valid ACDs and ACD block status information indicating that the remaining ACDs are in the ACA available.

In operation 2170, the initial file system information for managing data to be written to the UDA is recorded in the UDA in response to a write command from the host computer. Operation 2170 may be performed in any of the previous operations.

FIG. 22 is a flowchart for a reinitialization method for a rewritable recording medium according to an embodiment of the present invention. 22, in operation 2210, the disk 100 that was used is loaded into the drive system. In operation 2220, a system controller 10 included in the drive system receives a reinitialization command from the host computer 33 via the host computer interface 20. In operation 2230, the system controller 10 controls the write-read module 2 to read information recorded in the DMA and ACA, which are included in the initial area of the disk 100, and transfers this information. In operation 2240, the system controller 10 determines whether the information read from the DMA and ACA allows reinitialization.

If it is determined that the information does not allow reinitialization, the system controller transmits an error message to the host computer 3 through the host computer interface 20 in operation 2280. However, if it is determined in operation 2250 that the information allows reinitialization, the system controller 10 assigns a spare area to the data area of the disk 100 to determine the size of the spare area, and assigns the UDA to record user data in the data area to determine the starting address and end address of the UDA.

In operation 2255, the system controller 10 writes the characters “00h” or “FFh” to the unrecognized ACD block in the ACA automatically or in response to a command from the host computer 3 and updates the status information regarding the unrecognized ACD block to indicate that the unrecognized ACD block can be used by the system drive automatically or in response to a command from the host computer 3. Since an unrecognized ACD block refers to a function that the user, drive system, or application does not know, details of unrecognized ACDs cannot gut be known. If such unrecognized ACDs are not erased during the reinitialization of the disk, which may lead to inconvenience during the use of the reinitialized disk. For example, if the ACD regarding the read protection function was recorded and not erased from the disk during the system’s re-initialization by the drive system, and the application that does not recognize the read protection function, the data recorded on the disk cannot be read during playback after the reinitialization, because the disc still has read protection. In other words, when the current user uses the disc without knowing that the disc has read protection set by the previous user, the current user cannot use the disc efficiently. It is significant that ACDs recorded on a disk by a drive system include an application that recognizes that ACDs include general information that even a drive system including an application that cannot recognize ACDs can use this disk. Accordingly, it is preferred that the ACDs are not changed or erased during use of the disc. However, since the reinitialization is performed by the user to completely update and reuse the disk, the unrecognized ACD function is useless for this user.

In operation 2260, the system controller 10 changes or erases the ACDs contained in the recognized ACD block, or adds a new ACD block to the ACA according to a user request, and updates the ACD status information. Recognized ACDs refer to a function known to the user, the drive system, and the application. Accordingly, a change, erasure, or addition may be performed with respect to a recognized ACD unit according to a user request through a special user interface. According to the change, deletion or addition, the ACD status information included in the DDS is updated properly. Such recognizable ACDs may include default ACDs described in the embodiments illustrated in FIGS. 18 and 19.

After that, in operation 2270, the system controller 10 controls the write-read module 2 to clear the DMA in the initial area and controls the write-read module 2 and the servo 50 to enter the initial DFL and DDS in the DMA, including the reserved area assignment information, UDA size information and updated ACD status information.

In operation 2290, the system controller 10 reinitializes the file system information that is recorded in the UDA to reinitialize the information for managing data recorded in the UDA in response to a write command from the host computer 3.

Although not required in all aspects, aspects of the present invention may also be embodied as computer-readable codes on one or more computer-readable recording media. A computer-readable recording medium is any data storage device configured to store data that can then be read by a computer system. Examples of computer-readable recording media include read-only memory (ROM), random access memory (RAM), CD-ROMs, magnetic tapes, floppy disks, optical storage devices and carrier waves (such as data transmission over the Internet ) The computer-readable recording medium may also be distributed over networked computer systems, so that the computer-readable code is stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for carrying out the present invention can be easily interpreted by programmers who are specialists in the field to which the present invention relates.

According to aspects of the present invention, general disk access control information that is recognizable by all standards of the drive system is recorded on the drive when the drive is initialized or reinitialized, so that even a drive system that cannot recognize a function adapted for the drive can properly work on the basis of the aforementioned general information, thereby increasing compatibility between disks and drive systems.

Although aspects of the present invention are specifically shown and described with reference to embodiments thereof, those skilled in the art will appreciate that various changes in form and detail can be made therein without departing from the spirit and scope of the invention as defined by the accompanying claims and their equivalents. Options for implementation should be considered only in a descriptive sense, and not for purposes of limitation. Therefore, the scope of the invention is determined not by a detailed description of the invention, but by the attached claims, and all differences within the scope of this volume will be construed as being included in the present invention.

Claims (59)

1. An information recording medium for use with a recording / reproducing apparatus, comprising an access control area including access control data (ACD), the access control data having general information for a corresponding predetermined function recognized by the agreed type of recording and / or reproducing device , and this general information is set to allow an inconsistent type of recording / reproducing apparatus that cannot recognize this predetermined function to control access to the information recording medium, wherein the access control data regarding at least an aspect of the predetermined function is recognized by the inconsistent type of the recording / reproducing apparatus and were recorded in the access control area when the information recording medium was initialized or reinitialized. 2. The information recording medium according to claim 1, in which the general information regarding the recognizable function comprises an identifier of the recognizable function, information about the possibility of formatting with respect to the information recording medium, information about the recording-reproducing possibility with respect to subregions defined on the information recording medium, or a combination thereof. 3. The recording medium information according to claim 2, in which information about the possibility of formatting is set as "formatted", and information about the possibility of recording-playback is set to "recordable". 4. The information recording medium according to claim 1, in which, after recording the access control data, the area that is not recorded in the access control area is filled with a predetermined value. 5. The information recording medium according to claim 1, further comprising an ACD status information area and a defect management area having a description structure of the information recording medium used by the recording and / or reproducing device to perform defect management with respect to the information recording medium, the ACD status information area is included in the description structure of the information recording medium and is used to determine the possibility of using ACDs recorded in the access control area. 6. The information recording medium of claim 1, wherein the ACDs further comprise specific information in addition to general information. 7. The information recording medium according to claim 6, in which the specific information contains recording-specific information including the recording date of the respective ACDs and / or identification data of the device that recorded the corresponding ACDs. 8. The information recording medium according to claim 1, further comprising a write-once recording layer on which data can be recorded but cannot be erased, the access control area being on this write-once recording layer. 9. The information recording medium according to claim 1, further comprising a rewritable recording layer on which data can be recorded and erased, the access control area being on this rewritable recording layer. 10. A recording-reproducing device that transfers data in relation to an information recording medium, comprising a recording-reading module, recording data on an information recording medium or reading data from an information recording medium, wherein the information recording medium has an access control area including control data access, the access control data having general information for a corresponding predetermined function recognized by a compatible type of recording and / or reproducing device, and this general information is set to enable an incompatible type of recording / reproducing apparatus that cannot recognize this predetermined function to control access to the information recording medium; and a control module controlling a write-read module for recording access control data regarding a function recognized by compatible and incompatible recording-reproducing devices in the access control area when the information recording medium is initialized or reinitialized. 11. The recording / reproducing apparatus of claim 10, wherein the general information regarding the recognizable function comprises an identifier of said predetermined function, which is a recognizable compatible type of recording and / or reproducing device and is not recognizable an incompatible type of recording and / or reproducing device, information about the possibility of formatting relative to the recording medium information, information about the possibility of recording-playback relative to the subregions specified on the recording medium in formations, or combinations thereof. 12. The recording-reproducing apparatus of claim 10, wherein the control module sets the formatting information as “formatted” and the recording-reproducing information as “recorded”. 13. The recording / reproducing apparatus of claim 10, wherein the control module controls the recording / reading module to fill the area left unrecorded in the access control area with a predetermined value after recording the access control data. 14. A recording-reproducing method comprising the steps of recording access control data in an access control area of an information recording medium with respect to a function recognized by the recording-reproducing device when the information recording medium is initialized or reinitialized to enable the information recording medium to be compatible and incompatible types of recording / reproducing devices, wherein the access control data includes general information established to enable an incompatible type of recording / reproducing device that cannot recognize a predetermined function that is recognized by the compatible type of recording / reproducing device and adapted to the information recording medium, to control access to this information recording medium. 15. The recording-reproducing method of claim 14, wherein the general information regarding the recognizable function comprises an identifier of said predetermined function, which is a recognizable compatible type of recording and / or reproducing device and is an unrecognizable incompatible type of recording and / or reproducing device, information about the possibility of formatting with respect to the recording medium information, information about the possibility of recording-playback relative to the subareas specified on the recording medium inform nations, or combinations thereof. 16. The recording-reproducing method of claim 15, wherein the formatting information is set to “formatted” and the recording-reproducing information is set to “recordable” when the information recording medium is initialized or reinitialized. 17. The recording-reproducing method of claim 14, further comprising filling an area that is not recorded in the access control area with a predetermined value after recording the access control data. 18. An initialization method of an information recording medium, comprising the steps of: recording initialization information for defect management and managing an information recording medium in a defect management area located on the information recording medium in order to manage defects that occur in the data area located on the information recording medium; and recording in the access control area of the information stored on the recording medium, access control data regarding a predetermined function recognized by the recording / reproducing device, the access control data having general information that is set to enable any incompatible type of recording / reproducing device that cannot be recognized this predetermined function adapted to the information recording medium to control access to this information recording medium and to which identifies said predetermined function for compatible types of recording and reproducing devices that recognize this predetermined function. 19. The method of claim 18, wherein the general information regarding the recognizable function comprises an identifier of said predetermined function, which is a recognizable compatible type of recording and / or reproducing device and is an unrecognizable incompatible type of recording and / or reproducing device, formatting information regarding information recording medium, information about recording-reproducing capability with respect to subareas defined on the information recording medium, or a combination thereof. 20. The method according to claim 19, in which information about the possibility of formatting is set as "formatted", and information about the possibility of recording-playback is set to "recorded". 21. The method of claim 18, further comprising filling the area that is not recorded in the access control area with predetermined data after recording the access control data. 22. The method of claim 18, wherein the initialization information comprises a description structure of an information recording medium including information regarding a spare area that is assigned in the data area for recording data replacing defective data occurring in the data area and destination information regarding the area user data, in which user data is recorded in the data area, and a defect list including defect management information. 23. A method of reinitializing the information recording medium, comprising the steps of determining whether the information recording medium can be reinitialized using the initialization information recorded in the defect management area located on the information recording medium for defect management and management of the information recording medium, and using the access control data recorded in the access control area located on the information recording medium, the access control data having common information for the corresponding predefined function recognized by a compatible type of recording and / or reproducing device, and this general information is set to permit an incompatible type of recording and reproducing device that cannot recognize this predetermined function adapted to the information recording medium to control access to this information recording medium, and if it is determined that the information recording medium can be re-initialized, the initialization information is updated with re-initial information implementations in the defect management area and clear the access control area and write access control data in the access control area with respect to said predetermined function recognized by the compatible and incompatible recording / reproducing devices. 24. The method of claim 23, wherein the general information regarding the recognizable function comprises an identifier of said predetermined function, which is a recognizable compatible type of recording and / or reproducing device and is an unrecognizable incompatible type of recording and reproducing device, formatting information regarding the recording medium information, information about the possibility of recording-playback relative to the subareas specified on the information recording medium, or a combination thereof. 25. The method according to paragraph 24, in which information about the possibility of formatting is set as "formatted", and information about the possibility of recording-playback is set to "recorded". 26. The method according to item 23, further containing a stage in which fill the area that remains unrecorded in the area of access control, predetermined data after recording access control data. 27. The method of claim 23, wherein the reinitialization information comprises a description structure of an information recording medium including information on a spare area that is assigned in a data area for recording data replacing defective data occurring in the data area and destination information on a user data area in which user data is recorded in the data area; and a defect list including initial information for defect management. 28. The method according to item 27, further containing stages, which determine the size of the spare area as the destination information relative to the spare area and determine the starting address and end address of the user data area as destination information regarding the user data area. 29. A recording / reproducing apparatus that transfers data with respect to an information recording medium, comprising: a recording / reading module, writing data to an information recording medium, or reading data from an information recording medium having an access control area including access control data (ACD ), and an ACD status information area including status information selected from and indicating one of the defects and write capabilities of the corresponding ACD unit containing the ACD, the ACDs having common information for a corresponding predetermined function recognized by a compatible type of recording and / or reproducing device, and this general information is set to allow an incompatible type of recording and reproducing device that cannot recognize this predetermined function adapted to the information recording medium to control access to this information recording medium; and a control unit controlling the write-read unit for changing the state information with respect to the ACD unit when the information recording medium is reinitialized. 30. The recording / reproducing apparatus of claim 29, wherein the control module changes state information indicating that the corresponding ACD has valid ACDs to status information indicating that the ACD has invalid ACD and is available for recording ACD when the recording medium The information is reinitialized. 31. The recording / reproducing apparatus of claim 29, wherein the control module does not change the status information indicating that the ACD block is a defective block and the status information indicating that the ACD block is available for ACD recording when the information recording medium is reinitialized. 32. The recording / reproducing apparatus of claim 29, wherein the control module changes state information indicating that the ACD has valid ACD and playback defect to status information indicating that the ACD is defective when the information recording medium is repeatedly initialized. 33. The recording / reproducing apparatus of claim 29, wherein the control module controls the write / read module to record one of “00h” or “FFh” as an ACD identifier to indicate the validity of an ACD block included in an access control area when the recording medium The information is reinitialized. 34. The recording / reproducing apparatus according to claim 33, wherein the control module controls the recording / reading module to read data from the ACD block based on the state information regarding the ACD block when the validity of the ACD block indicated by the ACD identifier is not consistent with the state information regarding the block ACD 35. The recording / reproducing apparatus according to claim 33, wherein when an error occurs when reproducing state information regarding the ACD unit, the control unit determines the validity of the ACD unit based on the ACD identifier. 36. A recording-reproducing method comprising the steps of writing data to an information recording medium or reading data from an information recording medium having an access control area having access control data (ACD), and an ACD status information area having status information selectable from and indicating one of the defects and write capabilities of the corresponding ACD block containing the ACD, the ACDs having general information for the corresponding predefined function recognized by the compatible device type recording and / or playback, and this general information is set so as to allow non-compliant type recording-reproducing apparatus that can not recognize the predetermined function adapted to the information recording medium to control access to this information recording medium; and changing the status information regarding the ACD block when the information recording medium is reinitialized. 37. The recording-reproducing method of claim 36, wherein changing the status information comprises changing status information indicating that the corresponding ACD unit has valid ACDs, to status information indicating that the ACD has invalid ACDs and is available for recording ACD. 38. The recording-reproducing method of claim 36, wherein changing the status information comprises maintaining status information indicating that the ACD block is a defective block and status information indicating that the ACD block is available for recording ACD. 39. The recording-reproducing method of claim 36, wherein the changing the status information comprises changing the status information indicating that the ACD unit has valid ACDs and a defect in reproduction, to status information indicating that the ACD unit is a defective unit. 40. The recording-reproducing method of claim 36, further comprising recording one of “00h” and “FFh” as an ACD identifier for indicating the validity of an ACD block included in an access control area when the information recording medium is reinitialized. 41. The recording-reproducing method of claim 40, further comprising reading data from the ACD block based on the state information regarding the ACD block when the validity of the ACD block indicated by the ACD identifier is not consistent with the state information regarding this ACD block. 42. The recording-reproducing method of claim 40, further comprising the steps of determining the validity of the ACD block based on the ACD identifier and reading data from the ACD block based on the result of this determination when an error occurs when reproducing status information regarding the ACD block. 43. A recording / reproducing apparatus that transfers data with respect to an information recording medium, comprising: a recording / reading module, writing data to an information recording medium, or reading data from an information recording medium having an access control area containing access control data (ACD), moreover, ACDs have general information for a corresponding predetermined function recognized by a compatible type of recording and / or reproducing device, and this general information is set to provide ozhnosti compliant type of recording-reproducing apparatus that can not recognize the predetermined function adapted to the information recording medium to control access to this information recording medium; a control module controlling a write-read module for writing a default ACD in an access control area when the information recording medium is initialized or reinitialized, the default ACDs including general information set to enable write-read with respect to subareas defined on the medium recording information, and predetermined specific information. 44. The recording / reproducing apparatus of claim 43, wherein at least a portion of the default values for the ACD is provided by at least one of the host computer and the control module. 45. A recording / reproducing apparatus that transfers data with respect to an information recording medium, comprising: a recording / reading module, writing data to an information recording medium, or reading data from an information recording medium having an access control area containing access control data (ACD), moreover, ACDs have general information for a corresponding predetermined function recognized by a compatible type of recording and / or reproducing device, and this general information is set to provide ozhnosti compliant type of recording-reproducing apparatus that can not recognize the predetermined function adapted to the information recording medium to control access to this information recording medium; a control module controlling a write-read module for recording at least a default ACD among the ACDs regarding functions recognized by the recorder in the access control area when the information recording medium is initialized or reinitialized, the default ACDs including general information set to enable write-read with respect to subareas defined on the information recording medium, and predetermined specific information. 46. A recording / reproducing apparatus that transfers data with respect to an information recording medium, comprising: a recording / reading module, writing data to an information recording medium, or reading data from an information recording medium having an access control area in which access control data (ACD) is recorded ), the ACDs having general information for a corresponding predetermined function recognized by a compatible type of recording and / or reproducing device, and this general information is set to provide the possibility of an incompatible type of recording / reproducing device that cannot recognize this predetermined function adapted to the information recording medium to control access to this information recording medium; a control unit controlling a read / write module for changing data in the ACD unit with respect to the predetermined function recognized by the recording / reproducing device and recording a value indicating “available” in the ACD unit with respect to this predetermined function if it is not recognized by the writer -playback, among the ACD blocks in the field of access control when the information recording medium is reinitialized. 47. The recording / reproducing apparatus of claim 46, wherein the control module controls the writing / reading module to modify or erase data in the ACD unit with respect to the recognizable function or to add a new ACD unit with respect to the new recognizable function according to the user request and to update status information regarding recognizable function according to the result of one of these changes, deletion and addition. 48. The recording / reproducing apparatus according to claim 47, wherein the ACD unit with respect to the new recognizable function contains default ACDs that have general information set to enable recording / reading with respect to subareas defined on the information recording medium and predetermined specific information . 49. The recording / reproducing apparatus of claim 46, wherein the control module controls the writing / reading module to write one of “00h” and “FFh” to the ACD unit with respect to the unrecognized function to indicate that the ACD unit with respect to this unrecognized function does not have valid data, and for changing state information regarding an ACD block regarding an unrecognized function to indicate that an ACD block regarding an unrecognized function is available. 50. A recording-reproducing method comprising the steps of recording default access control data (ACD) in an access control area when the information recording medium is initialized or reinitialized, wherein an access control area for recording ACD is provided in the information recording medium, a ACDs have general information for a corresponding predetermined function recognized by a compatible type of recording and / or reproducing device, and this general information is set to provide possibly an incompatible type of recording / reproducing apparatus that cannot recognize this predetermined function adapted to the information recording medium to control access to this information recording medium; By default, ACDs contain general information set to enable write-read with respect to subareas defined on the information recording medium and predetermined specific information. 51. The method of recording-playback according to item 50, in which at least part of the values set for the ACD by default, is provided by at least one of the host computer and the control module. 52. A recording-reproducing method, comprising the steps of recording at least default access control data (ACD) among the ACDs in the access control area with respect to functions recognized by the recording-reproducing apparatus when the recording-reproducing apparatus initializes or reinitializes the recording medium information, moreover, an access control area is provided in the information recording medium for recording ACDs in it, and ACDs have general information for the corresponding predetermined function, recognizing a compatible type of recording and / or reproducing device, and this general information is set to enable an incompatible type of recording and reproducing device that cannot recognize this predetermined function adapted to the information recording medium to control access to this information recording medium; By default, ACDs contain general information set to enable write-read with respect to subareas defined on the information recording medium and predetermined specific information. 53. A recording-reproducing method, comprising the steps of changing data in an access control (ACD) data unit regarding a function recognized by a recording-reading device in an access control area when the information recording medium is reinitialized and recording a value in the ACD unit, indicating “available”, with respect to a function not recognized by the recording / reproducing apparatus, in the access control area when the information recording medium is reinitialized, wherein in the recording medium, information an access control area is provided for recording ACDs therein, the ACDs having common information for a corresponding predetermined function recognized by a compatible type of recording and / or reproducing device, and this general information is set to enable an incompatible type of recording and reproducing device that cannot be recognized this predetermined function adapted to the information recording medium to control access to this information recording medium. 54. The method of recording-playback according to item 53, in which the change comprises the steps of changing or erasing data in an ACD block regarding a recognized function or adding a new ACD block relative to a new recognized function according to a user request and updating the status information regarding the ACD block with respect to the recognized functions according to the result of one of these changes, deletion and addition. 55. The method of recording-playback according to item 54, in which the ACD unit relative to the new recognizable function contains default ACDs that have general information set to enable recording-reading in relation to subregions specified on the information recording medium and predetermined specific information . 56. The recording-reproducing method of claim 53, wherein the recording comprises the steps of recording one of “00h” and “FFh” in the ACD block with respect to an unrecognizable function to indicate that the ACD block with respect to the unrecognizable function does not have valid data, and changing the state information regarding the ACD block regarding the unrecognized function to indicate that the ACD block regarding the unrecognized function is available. Priorities for items: 05/11/2004 - paragraphs 1-28; 06/11/2004 - pp.29-42; 06/16/2004 - pp. 43-56.

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