KR20050075639A - Optical recording medium, recording/reproducing apparatus, recording/reproducing method and computer readable recording medium storing for a program for performing the method - Google Patents

Abstract

Disclosed is an optical record information storage medium, a recording / reproducing apparatus, a recording / reproducing method, and a computer-readable recording medium having recorded thereon a program for performing the method. An optical record information storage medium according to the present invention is an optical record information storage medium comprising: a DDS / RMD including DDS information including information for disc management and RMD information including information for recording management of data recorded on a disc; The information is composed of one data block which is a recording / reproducing unit. According to the present invention as described above, since the update is performed by configuring the DDS / RMD information in one block, it is possible to effectively use the DDS / RMD area.

Description

Optical recording information storage medium, recording / reproducing apparatus, recording / reproducing method, and computer readable recording medium having recorded thereon a program for performing the method. for a program for performing the method}

TECHNICAL FIELD The present invention relates to the field of discs, and more particularly, to an optical record information storage medium, a recording / reproducing apparatus, a recording / reproducing method, and a computer-readable recording medium having recorded thereon a program for performing the method.

Optical information recording technology, that is, a technique of recording data on a recordable optical disc, has recently undergone remarkable growth. In addition to these improvements, various types of optical disc recording / reproducing apparatuses have also been developed.

A write once optical disc refers to an optical disc in which data can be recorded only once. Such write-once optical discs have conventionally been, for example, CD-R and DVD-R. In the write once optical disc, heat is applied to a predetermined portion of the recording layer with laser light to deform the image of the recording layer to generate recording marks. Since the deformed portion cannot be returned to its original state before the laser light is applied, the write once optical disc can only be written once.

Due to the characteristics of a medium that cannot be overwritten in a write-once optical disc, when discs are recorded at once without recording at one time, temporary disc management information generated every predetermined operation unit is recorded every time and the disc is finalized. In this case, the final temporary disk management information is recorded in the predetermined area as the final disk management information. Therefore, since the temporary disk management information must be updated every predetermined unit of operation until the disk is finalized, a large amount of space for such temporary disk management information is required. Therefore, such a write-once optical disc requires a technique for efficiently recording temporary disc management information without wasting space on the disc.

On the other hand, in order for a disk drive to write data to the disk, it must know the appropriate power for the disk and drive status. This is because the disc and the drive manufacturer have some differences in the proper power for the recording. By finding the optimum power for each disc and drive and recording at the optimum power, playback quality can be maintained during data playback after recording. To this end, the information storage medium provides a power calibration area (PCA).

When recording data onto the optical disc, an optical head called a pickup irradiates laser light onto the recording layer of the recordable optical disc. The portion of the recording layer to which such laser light is irradiated causes a change in characteristics, and thus a change in the amount of light reflection. Therefore, the emission power of the laser light at two levels causes a change in the amount of reflection to two values in the recording layer. In other words, the portion of the recording layer with a low reflection amount is called a recording mark, and the portion with a high reflection amount is called a recording space. Therefore, in the optical information recording technology, data is recorded in a sequence of recording marks and recording spaces on a recordable optical disc.

At the time of data reproduction, the pickup irradiates laser light to the optical disk, and converts the reflected light into an analog signal. The semiconductor laser emits laser light at a predetermined power level. This power level is called a reproduction power level. Since this reproduction power level is low enough, the laser light does not change the properties of the recording layer of the optical disc.

The laser driver controls the drive current of the semiconductor laser with the drive current at a predetermined write pulse and write power level. In this way, the semiconductor laser irradiates a laser pulse having substantially the same shape depending on the recording pulse and the recording power level. However, the actual shape of the recording mark is not only determined by the recording pulse and the recording power level. For example, a change in the ambient temperature may cause a change in the recording layer area, and a wavelength of the semiconductor laser light may cause a change in the temperature. In addition, the structure of the optical disc may vary from product to product. Therefore, the formation of the recording mark is not performed with sufficient accuracy when the recording pulse and the recording power level are determined only according to the writing strategy and the recording power condition according to the standard. These factors lead to errors in the data actually recorded. Therefore, to solve this problem, conventionally, an optical disc recording / reproducing apparatus modifies a recording strategy and adjusts a recording power level appropriate for the optical disc.

Initially, the recording power level is determined according to the recording power condition set as the initial condition, and the laser light corresponding to the recording power level is irradiated. This forms a test record mark in the PCA area of the optical disc. The pickup irradiates the PCA with the test recording mark with laser light according to the reproduction power level and detects the reflected light. Next, the recording power level is determined in accordance with the recording power condition set to the modified condition to irradiate the laser light, form the recording mark, and detect the reflected light. In this process, a recording strategy according to a number of modified conditions is repeatedly performed, and among these recording strategies, the most effective recording strategy is determined as the optimal recording strategy.

As a result of the recording condition test as described above, information about the drive that tested the recording condition should be recorded in a predetermined area of the disc. This information is wasted because space cannot be overwritten, erased, or rewritten due to the characteristics of the recording medium. Efficient recording is required.

The present invention provides an optical recording information storage medium, a recording / reproducing apparatus, a recording / reproducing method, and a method for efficiently recording temporary disk management information about an optical disk or drive information used when recording data on the optical disk. An object of the present invention is to provide a computer-readable recording medium having recorded thereon a program.

One feature of the present invention for solving the above problems is, in an optical recording information storage medium, RMD including DDS information including information for disc management and information for recording management of data recorded on the disc The DDS / RMD information composed of the information consists of one data block which is a recording / reproducing unit.

Here, the RMD information includes an RMD header including an RMD identifier indicating the RMD information, state information about a closed border, and information about a recording state of an open border.

The DDS / RMD information may further include information about at least one drive. The drive information includes information about the drive manufacturer and information about the recording conditions.

In addition, the DDS / RMD information preferably includes one sector of DDS information and 31 sectors of RMD information.

The RMD information may further include information about at least one drive, and the RMD information except for the drive may be 29 sectors or 30 sectors.

According to another aspect of the present invention, in a recording apparatus, optical recording information storage includes DDS / RMD information including DDS information including information for disc management and RMD information including information for recording management of data recorded on a disc. And a control unit for controlling to record the data into one data block as a recording / reproducing unit.

The control unit preferably controls to further record information about at least one drive in the one data block.

According to still another aspect of the present invention, there is provided, in a reproducing apparatus, DDS information including information for disc management from one data block as a recording / reproducing unit in an optical recording information storage medium and for recording management of data recorded on the disc. And a control unit for controlling to read the DDS / RMD information including the RMD information including the information.

The control unit preferably controls to read more information on at least one drive from the one data block.

According to still another aspect of the present invention, in the recording method, the optical recording information includes DDS / RMD information including DDS information including information for disc management and RMD information including information for recording management of data recorded on the disc. Recording to a storage medium as one data block as a recording / reproducing unit.

Here, the method may further include recording information on at least one drive in the one data block.

According to still another aspect of the present invention, there is provided, in a reproducing method, DDS information including information for disc management from one data block which is a recording / reproducing unit in an optical record information storage medium and for recording management of data recorded on a disc. And reading the DDS / RMD information consisting of the RMD information including the information.

Here, the method may further include reading information on at least one drive from the one data block.

A further aspect of the present invention is a computer-readable recording medium having recorded thereon a program for performing a recording method, wherein the recording method includes recording management of DDS information including information for disk management and data recorded on the disk. And recording the DDS / RMD information consisting of RMD information including information for a single data block, which is a recording / reproducing unit, on the optical recording information storage medium.

A still further aspect of the present invention is a computer readable recording medium having recorded thereon a program for performing a reproducing method, wherein the reproducing method is provided for disc management from one data block which is a recording / reproducing unit in an optical recording information storage medium. And reading the DDS / RMD information including DDS information including information and RMD information including information for recording management of data recorded on the disk.

The present invention will now be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram of a configuration of a recording / reproducing apparatus according to the present invention.

Referring to FIG. 1, the recording / reproducing apparatus includes a recording / reading unit 2 and a control unit 1.

The recording / reading section 2 is provided with a pickup or the like to record data on the disk 4, which is an optical recording information storage medium according to the present invention, and reads the recorded data.

The control unit 1 controls to record and read data on the disc 4 according to a predetermined file system. Particularly, according to the present invention, the control unit 1 controls to record the DDS / RMD information including the disc management information and the recording management information into one block to record on the disc, and further, the drive information is configured into one block. Control is performed so that the DDS / RMD information is recorded together with the disc management information and the recording management information.

The control unit 1 includes a system controller 10, an I / F 20, a DSP 30, an RF AMP 40, and a servo 50.

In writing, the host I / F 20 receives a predetermined write command from the host 3 and sends it to the system controller 10. The system controller 10 controls the DSP 30 and the servo 50 to carry out the write command received from the host I / F 20. The DSP 30 adds additional data such as parity for error correction to the data to be recorded received from the host I / F 20 and performs ECC encoding to generate an ECC block, which is an error correction block, and then, in a predetermined manner. Modulate. The RF AMP 40 converts the data output from the DSP 30 into an RF signal. The recording / reading section 2 provided with the pickup records the RF signal transmitted from the RF AMP 40 on the disc 4. The servo 50 receives a command necessary for servo control from the system controller 10 to servo control the pickup of the recording / reading unit 2.

In particular, according to the present invention, the system controller 10 includes a recording power determining unit 11, a disc management information recording processing unit 12, a disc management information reading processing unit 13, and a buffer memory 14.

The recording power determination unit 11 controls to test various recording conditions in the PCA area of the disc to determine the optimal recording conditions, and records the information about the optimal recording conditions thus determined in the buffer memory 14.

When the disc management information recording processing unit 12 needs to record temporary disc management information for each predetermined operation, one block includes DDS information including information on a disc definition and RMD information including information on data recording management. Configured to control to write to disk. Further, the disk management information recording processing unit 12 has a change in the drive information, for example, when a disk is mounted in a new drive so that information on a new optimal recording condition or the like is stored in the buffer memory 14, The drive information including the information regarding the optimal recording condition is controlled to be included in the one block together with the DDS information and the RMD information composed of one block and recorded.

At the time of reproduction, the host I / F 20 receives a reproduction command from the host 3. The system controller 10 performs initialization necessary for regeneration. The recording / reading section 2 outputs an optical signal obtained by irradiating a laser beam on the disk 4 and receiving a laser beam reflected from the disk 4. The RF AMP 40 converts an optical signal output from the recording / reading section 2 into an RF signal and provides modulated data obtained from the RF signal to the DSP 30, while providing a servo signal for control obtained from the RF signal. Provided to the servo 50. The DSP 30 demodulates the modulated data and outputs data obtained through ECC error correction. On the other hand, the servo 50 receives the servo signal received from the RF AMP 40 and the command required for the servo control received from the system controller 10 to perform servo control for the pickup. The host I / F 20 sends data received from the DSP 30 to the host.

In particular, according to the present invention, the system controller 10 includes a disc management information reading processing unit 13 for reproduction control. The disc management information reading processing unit 13 includes DDS information including information for disc management from one data block which is a recording / reproducing unit from an optical disc, and RMD information including information for recording management of data recorded on the disc. Controls reading of the made DDS / RMD information. Furthermore, the disc management information read processing unit 13 controls to read more information on at least one drive from the one data block.

The structure of the optical record information storage medium according to the present invention will now be described.

Disc Management Information (DMI) recorded on the optical recording information storage medium according to the present invention includes a Disc Definition Structure (DDS), Recording Management Data (RMD), and a Defect List. : DL). The Disc Management Area (DMA) for recording disc management information is largely divided into a temporary disc management area (TDMA) and finalized disc management for recording the disc management information while the disc is being used. It consists of a finalized disc management area (FDMA) for recording information.

The TDMA for temporarily recording the disc management information while using the disc includes a DDS / RMD area for recording DDS and RMD and a DL area for recording DL.

The DDS includes a replacement block for replacing a defective block in the data block recorded in the data area, location information of the SA / DL area where the DL is recorded, location information of the DDS / RMD area, location information where the DL is recorded, and SA / Location information available for replacement in the DL area or for updating the DL, a consistency flag for checking whether the disk was ejected normally during the previous use, a write protection information for preventing the write, and the like.

The RMD is information for management of data recorded on a disc. The RMD includes R-zone entries indicating a state of each R-zone in a sequential recording mode and a random recording mode. And a bitmap indicating the presence or absence of data recording for each recording unit block of the user area in bit values.

The DDS / RMD area for recording such DDS and RMD is provided in the lead-in or lead-out in a single recording layer disc, and in the lead-in or intermediate area or lead-out in a double recording layer. In addition, the DDS / RMD area may be allocated to the data area in order to increase the number of updateable times of the DDS / RMD according to the intention of the drive manufacturer or the user at the time of initializing the disk.

The DL includes information about the position of a defective block that occurred during recording or reproduction of data, and information about the position of a replacement block replacing the defective block. The DL area in which such DL is recorded is not fixed, but is assigned whenever an update is requested to the SA / DL area allocated in the data area for defect management by the drive.

If the data can no longer be written to the disc, or if the user wants to keep the current disc state and use it only for playback without recording additional data, the disc is finalized. It is recorded in the final disk management area (FDMA). 2 and 3 show regions in which FDMA is provided on the disc.

2 shows an example of the structure of a single recording layer disc according to the present invention.

Referring to FIG. 2, the disc has a lead-in area at its inner circumference, a lead-out area at its outer circumference, and a data area at its center.

The lead-in area includes PCA # 0, FDMA # 2, DDS / RMD area # 0, FDMA # 1, and the data area includes SA / DL area # 0, user area, and SA / DL area # 1. The out area includes FDMA # 3, DDS / RMD area # 1, FDMA # 4, and PCA # 1.

As described above, the PCA area is a test area for testing to find the optimal recording power and the variables according to the recording method by testing with various recording powers according to the write strategy, and the DDS / RMD area is It is an area in which position information on a disk provided with various disk management information areas and information for recording management of data recorded on the disk are recorded.

 As will be described in detail below, in the present invention, information on the optimal recording power obtained from the test result and the parameters according to the recording method is recorded in the DDS / RMD area using the DDS / RMD block as part of the RMD information.

3 shows an example of the structure of a dual recording layer disc according to the present invention.

3, a lead-in area, a data area # 0, and an intermediate area # 0 are provided in one recording layer L0, and an intermediate area # 1, a data area # 1, and a lead-out area are continuously arranged in another recording layer L1. do.

The lead-in area of the L0 layer includes PCA # 0, FDMA # 2, DDS / RMD area # 0, FDMA # 1, the data area includes SA / DL area # 0, user area # 0, and lead-out area Includes FDMA # 3, DDS / RMD region # 1, FDMA # 4, and PCA # 1. The middle area # 1 of the L1 layer includes FDMA # 3, DDS / RMD area # 3, FDMA # 4, and PCA # 3, and the data area # 1 includes SA / DL area # 1, user area # 1, and FDMA # 3. The lead-out area includes PCA # 2, FDMA # 2, DDS / RMD area # 1, and FDMA # 1.

As shown in Figs. 2 and 3, there are two power calibration areas (PCAs) in each recording layer.

Because of the nature of the recording medium, it is desirable to use the PCA continuously to find the proper recording power because it cannot be erased and reused, and also to manage the next available test position pointer.

Appropriate optical power control is required to record data on the disk for host command or disk management. In a medium having a plurality of recording layers, it is desirable to find and record an appropriate optical power in the PCA in each recording layer for each recording layer, and to separately manage the next available test position pointer for each layer. desirable.

In addition, as shown in FIGS. 2 and 3, when PCAs exist in each of the inner and outer peripheries in each layer, when only one next available test location pointer is managed, the current pickup is in the inner circle. If you point to an out-of-band PCA, it will take a lot of time to access it, which will lead to system degradation. It is therefore desirable to separately manage the pointers for each area within each layer as well as within each layer to find the appropriate recording optical power at the next available test location pointer of the PCA in the near area. The pointer indicating the next available position in this PCA area is preferably recorded as information of the RMD for recording management of the above information or as information of the DDS recorded in the same recording unit block as the RMD.

4 is a data structure diagram of a DDS / RMD area including drive information according to the present invention.

Referring to FIG. 4, the DDS / RMD region #i according to the present invention includes a plurality of DDS / RMD blocks composed of one block, that is, DDS / RMD # 0, DDS / RMD # 1, ... DDS / RMD #n Each DDS / RMD block, that is, DDS / RMD #i includes DDS information and RMD information.

According to the present invention, the DDS information, which is information for disc management, and the RMD information, which is information for recording management, are configured and recorded in one block, thereby efficiently saving space for recording the disc management information and recording management information, which should be updated for each predetermined operation. It is available.

Further, the RMD information for data record management includes, in particular, drive information according to the present invention. Here, the drive information refers to the result information obtained by testing to find an appropriate power for recording data on the disc. That is, in the present invention, by recording the drive information including the recording condition information in the free space of the DDS / RMD block, the disk space is used by using the DDS / RMD block without having to prepare a separate disk space for recording the drive information. Use efficiently

FIG. 5 is a data structure diagram of DDS information included in the DDS / RMD block shown in FIG. 4. In Fig. 5, testable next position information in the PCA recorded in the DDS / RMD block is shown according to the present invention.

Each DDS / RMD block, DDS / RMD #i 100 includes one sector of DDS information 200 and 31 sectors of RMD information 300. The DDS information 200 of one sector includes the next usage location physical address 210 of PCA # 0, the next usage location physical address 220 of PCA # 1, and the next usage location physical address 230 of PCA # 2. , The next usage location physical address 240 of PCA # 3. By recording the next testable location information for each PCA area in this way, the drive system can find the proper recording optical power where it is desired.

FIG. 6 is a data structure diagram of an RMD block included in the DDS / RMD block shown in FIG. 4.

Referring to FIG. 6, each DDS / RMD block and DDS / RMD #i 100 includes DDS information 200 of one sector and RMD information 300 of 31 sectors. The RMD information 300 of 31 sectors includes an RMD header 310, a closed border entry list 320, an open border record state 33), and drive information 340.

The RMD header 310 includes information on an RMD identifier indicating RMD information, a last border entry indicating status information on the last border, the total number of borders, the number of blocks written in the closed border and the number of blocks written in the open border. Is recorded.

In the case where the disc is used as one or several borders, each border can be recorded in a sequential recording mode which is sequentially recorded in the border or in a random recording mode which is randomly recorded in the border. Disks are used continuously in border units. The border on which data can be written is always the last border. In other words, the disc is initially used as one border, and when a predetermined recording operation is completed, the current border is closed as the last recorded block and a new border is created and used after the last recorded block.

FIG. 7A is a data structure in the random recording mode of RMD information shown in FIG.

In the random recording mode, it is possible to literally record randomly in a recordable border. The closed border entry list 320 includes border entry # 1 321, border entry # 2 322, ..., and the recording state 330 of the open border indicates that the recorded physical block The bitmap indicated indicates the state of the last border. Each border entry contains the start address information at which the border was recorded and the address information at which the last block in the border was recorded.

FIG. 7B is a data structure in the sequential recording mode of the RMD information shown in FIG. In the sequential recording mode, the recordable border is divided into one or a plurality of R-zones to perform continuous recording in each R-zone.

The closed border entry list 320 includes border entry # 1 321, border entry # 2 322, ..., and the open state of the border is 330 R-zone entry # 1 331, R -zone contains entry # 2 (332) ... Each border entry is the same as in the random recording mode, and each R-zone entry is the same as the border entry. That is, information about each R-zone is represented by an R-zone entry consisting of the start address of the R-zone and the Last Recorded Address (LRA) indicating the last recorded address of data recorded in the R-zone. .

When a border is used in sequential write mode or random write mode and then closed, the R-zone entries in sequential write mode or bitmap in random write mode for that border are no longer recorded, and are no longer written to the currently closed border. It is represented by a closed border entry consisting of a start address for the last record and a Last Recorded Address (LRA) for the last recorded address in the border. And the closed border is used only for reproduction.

Since the bitmap in the random recording mode indicates whether a physical recording block is to be recorded as a bit value, the space for the bitmap varies depending on the recording capacity of the entire user data area. When the size of one physical recording block is 64 KB, the capacity of the recording space that can be represented by a bitmap of one sector of 2048 bytes (2 KB) can be calculated as follows.

2048 * 8 * 64 * 1024 B = 1073741824 B

Therefore, the capacity that a bitmap of 28 sectors can represent is 28 * 1073741824 B = 30064771072 B.

If one layer of the disk has a capacity of about 15 GB (where G = 10 ^ 9), the entire single or dual recording layer (30 GB) can be represented by a 28 sector bitmap. Therefore, even in view of the RMD header and the closed border entry list of the RMD information, the RMD information excluding the drive information may be composed of 29 to 30 sectors. When using the disc as multiple borders, the R-zone entry information or bitmap information for the closed borders is not recorded but represents each closed border as a border entry, indicating the recording status of the open border in random recording mode. The number of bits for betting to bet will gradually decrease compared to before. This is because the disk is used continuously in the border unit, and since the last border is always from the block immediately after the LRA of the previous border to the end of the data area, the total capacity of the current border is reduced rather than the previous border.

 The RMD header records information about the RMD identifier, the last border entry, the total number of borders, the number of blocks written in the closed border and the number of blocks written in the open border, and 40 bytes are allocated for this RMD header. When the RMD information excluding the drive information is composed of 29 to 30 sectors, the number of entries that can be indicated when the last open border is used in the sequential write mode can be calculated as follows, including the closed border entry.

The border entry and the R-zone entry consist of the start address and the last recording address (LRA) of the border or R-zone, and the format is the same, and if the address unit is given in units of 2048 bytes (1 sector), it is 2 ^ 32 Since the sector can be represented, if 4 bytes are allocated for the start address and 4 bytes for the LRA, 8 bytes are allocated to one entry, so the number of entries that can be represented by 1 sector is 2048/8 = 256. Thus, the total number of representable entries is (29 (or 30) * 2048-40) / 8 = 7419 (or 7675). After all, the number of entries that can be represented when using the first border is 7419 (or 7675), so the R-zone can be divided by that amount. When using disk with multiple borders, the number of available R-zones in the open border is "7419 (or 7675)-number of closed borders".

Therefore, referring to FIG. 6, two cases of the size of the RMD may be represented by K = 1 and K = 2. The RMD information, except the drive information, consists of 31-K sectors with a total disk capacity of approximately 30 to 31 GB (G = 10 ^ 9), including a list of closed border entries for open borders and information about the closed borders. It is possible to indicate the recording status of the last open border for R-zone entries in the border's sequential write mode and for the bitmap in the random write mode.

 When the size of one block of DDS / RMD is 64 KB, the DDS is composed of 1 sector (2048 bytes), and the RMD is composed of 31 sectors. In the RMD information 300 of 31 sectors, the RMD header 310, the closed border entry list 320, and the open border record state 33 are composed of 31-K sectors, and the drive information 340 Consists of K sectors. Here, it is preferable that K becomes 1 or 2.

FIG. 8A is a first example of the size of RMD information and drive information of the RMD block shown in FIG. 6.

Referring to FIG. 8A, when the drive information 340 is composed of one sector, the RMD header 310, the closed border entry list 320, and the open border recording state 330 are composed of 30 sectors. The drive information 340 is composed of one sector.

FIG. 8B is a second size of RMD information and drive information of the RMD block shown in FIG.

Referring to FIG. 8B, when the drive information 340 is composed of two sectors, the RMD header 310, the closed border entry list 320, and the open border recording state 33 are 29 sectors. Drive information 340 is composed of two sectors.

FIG. 9A illustrates a specific configuration of the drive information shown in FIG. 8A.

Referring to FIG. 9A, the drive information 340 composed of one sector includes eight drive information rooms, that is, drive information room # 1, drive information room # 2, and drive information room # 8. Each drive information room consists of 256 bytes.

9B illustrates a specific configuration of the drive information shown in FIG. 8B.

Referring to FIG. 9B, the drive information 340 consisting of two sectors includes sixteen drive information rooms, that is, drive information room # 1, drive information room # 2, and drive information room # 16. Each drive information room consists of 256 bytes. With this structure, information about eight different drives can be recorded when the drive information is one sector, and information about 16 different drives can be recorded when the drive information is two sectors.

Fig. 10 is a data structure of the drive information room shown in Figs. 8A and 8B.

Referring to FIG. 10, each drive information room, that is, drive information room #i, relates to drive manufacturer information and additional information 351, information on an appropriate recording power value according to a recording power test result, and variable values according to a recording strategy. The recording power test result information 352 including the information is included. 96 bytes may be allocated as a space for recording the drive manufacturer information and additional information 351, and 160 bytes may be allocated as a space for recording the recording power test result information 352.

11 is a flowchart illustrating a recording / reading operation process of the disc management information according to the present invention. This recording / reading operation of the disc management information appears as an operation of the previous stage when recording or reproducing data in the data area of the disc.

When the disc is inserted into a predetermined drive, the system controller 10 reads the DDS / RMD information composed of one block including the disc management information and the recording management information recorded in the DDS / RMD area provided in the disc (111). . In one such DDS / RMD block, DDS information including disk management information, RMD information including recording management information, and drive information are recorded together.

Next, the system controller 10 extracts drive information from the DDS / RMD block (112). Such drive information may include one or more drive information. Then, the system controller 10 checks whether the drive information is present in the extracted drive information (113). As a result of the check, if there is no drive information thereof, the recording power is tested by irradiating a laser light according to a predetermined recording condition to the PCA area provided on the disc (114). The system controller 10 determines the optimal recording power as a result of the test (115). Then, the drive information including the information about the determined recording power is composed of one DDS / RMD block together with the disc management information and the recording management information and controlled to be recorded in the DDS / RMD area provided in the disc (116).

Next, the system controller 10 controls to record data at the determined recording power (117).

If the extracted drive information has its own drive information, the system controller 10 controls to record the data with the recording power that meets the recording conditions by referring to its own recording condition information included in the drive information (117). ).

In the above description of the present invention, the description has been made mainly on the one-time recording information storage medium. Although the present invention is effectively applied to a storage medium that can be recorded only once, such as a one-time recording information storage medium, the present invention is not limited thereto but may be applied to any kind of recording medium.

The recording / reproducing method as described above can also be embodied as computer readable codes on a computer readable recording medium. Computer-readable recording media include all kinds of recording media on which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. In addition, functional programs, codes, and code segments for implementing the recording / reproducing method can be easily inferred by programmers in the art to which the present invention belongs.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

According to the present invention as described above, for a disk having a capacity of approximately 30GB or less of the entire user data area, the DDS / RMD block is composed of one 64KB block and updated as one block when the information is required to be updated. The update can be achieved to effectively use the DDS / RMD area, and further recording of drive information in the RMD information eliminates the need for a separate area for drive information, thereby enabling efficient use of the disc.

1 is a schematic block diagram of a configuration of a recording / reproducing apparatus according to the present invention;

2 is a structural diagram of a single recording layer disc according to the present invention;

3 is a structural diagram of a double recording layer disc according to the present invention;

4 is a data structure diagram of a DDS / RMD area including drive information according to the present invention;

5 is a data structure diagram of a DDS block included in the DDS / RMD block shown in FIG. 4;

FIG. 6 is a data structure diagram of an RMD block included in the DDS / RMD block shown in FIG. 4;

FIG. 7A is a data structure in a random recording mode of RMD information shown in FIG. 6;

FIG. 7B is a data structure in the sequential recording mode of the RMD information shown in FIG. 6;

FIG. 8A is a first example of the size of RMD information and drive information of the RMD block shown in FIG. 6;

FIG. 8B is a second example of the size of RMD information and drive information of the RMD block shown in FIG. 6;

9A is a diagram illustrating a specific configuration of the drive information shown in FIG. 8A;

9B is a view showing a specific configuration of the drive information shown in FIG. 8B;

10 is a data structure of the drive information room shown in FIGS. 8A and 8B;

Fig. 11 is a flowchart showing a recording / reading operation process of disc management information in accordance with the present invention.

Claims (16)

An optical record information storage medium, Characterized in that the DDS / RMD information consisting of DDS information including information for disc management and RMD information including information for recording management of data recorded on the disc is composed of one data block as a recording / reproducing unit. Optical record information storage medium. The method of claim 1, And the RMD information includes an RMD header including an RMD identifier indicating the RMD information, state information about a closed border, and information about a recording state of an open border. The method of claim 1, The DDS / RMD information further includes information about at least one drive. The method of claim 3, And the drive information includes information about a drive manufacturer and information on recording conditions. The method of claim 1, Wherein the DDS / RMD information includes DDS information of one sector and RMD information of 31 sectors. The method of claim 5, The RMD information further includes information about at least one drive, And the RMD information except for the drive is comprised of 29 sectors or 30 sectors. In the recording apparatus, DDS / RMD information including DDS information including information for disc management and RMD information including information for recording management of data recorded on the disc into one data block as a recording / reproducing unit in an optical recording information storage medium. And a control unit for controlling to record. The method of claim 7, wherein The control unit, And record information about at least one drive in the one data block. In the playback device, DDS / RMD information including DDS information including information for disc management and RMD information including information for recording management of data recorded on a disc from one data block that is a recording / reproducing unit in an optical recording information storage medium. And a control unit for controlling reading. The method of claim 9, The control unit, And control to further read information about at least one drive from the one data block. In the recording method, DDS / RMD information including DDS information including information for disc management and RMD information including information for recording management of data recorded on the disc into one data block as a recording / reproducing unit in an optical recording information storage medium. And a recording step. The method of claim 11, And further writing information about at least one drive into said one block of data. In the reproduction method, DDS / RMD information including DDS information including information for disc management and RMD information including information for recording management of data recorded on a disc from one data block that is a recording / reproducing unit in an optical recording information storage medium. And a reading step. The method of claim 13, And further reading information about at least one drive from said one data block. A computer-readable recording medium having recorded thereon a program for performing the recording method, the recording method comprising: DDS / RMD information including DDS information including information for disc management and RMD information including information for recording management of data recorded on the disc into one data block as a recording / reproducing unit in an optical recording information storage medium. And a recording step. A computer-readable recording medium having recorded thereon a program for performing the reproduction method, the reproduction method comprising: DDS / RMD information including DDS information including information for disc management and RMD information including information for recording management of data recorded on a disc from one data block that is a recording / reproducing unit in an optical recording information storage medium. And a reading step.