KR20070033737A - Recording / reproducing apparatus, recording / reproducing method, and information storage medium - Google Patents

Abstract

The present invention relates to a recording / reproducing apparatus, a recording / reproducing method, and an information storage medium thereof capable of preventing disc deterioration due to rewriting.

An information storage medium including at least one recording layer according to the present invention has a rewritable count characteristic indicating whether a first area for recording data and information on the number of times data can be recorded in the first area is valid. And a second area for recording information. According to the present invention as described above, it is possible to prevent the deterioration of the disc which may occur due to the repetitive recording of the rewritable disc.

Description

Recording / reproducing apparatus, recording / reproducing apparatus, recording / reproducing method and information recording medium therefore}

1 is a graph showing the DOW characteristic of layer 0 of a dual recording layer disc according to the prior art;

2 is an example of a layout of an information storage medium in which rewritable number characteristic information can be recorded according to the present invention;

3 is embossed physical format information in which rewritable number of time characteristic information of a user data area is recorded according to the present invention;

4 shows prepit data in which rewritable frequency characteristic information of a user data area is recorded;

5 is a form in which the rewritable number of times characteristic information of the PCA is further recorded in the prepit data shown in FIG. 4;

6 shows prepit data in which rewritable frequency characteristic information of each layer of a dual recording layer is recorded according to the present invention;

FIG. 7 illustrates physical format information in which rewritable frequency characteristic information of a user data area is recorded in a structure different from that shown in FIG.

8 is an example of rewritable frequency characteristic information according to the present invention;

9 is another example of rewritable frequency characteristic information according to the present invention;

10 is another example of rewritable frequency characteristic information according to the present invention;

11 is another example of rewritable number of times characteristic information according to the present invention;

12 is another example of rewritable number of times characteristic information according to the present invention;

13A and 13B illustrate another example of rewritable frequency characteristic information according to the present invention;

14 is a schematic diagram of a recording / reproducing apparatus for reading out and using rewritable frequency characteristic information recorded on an information storage medium according to the present invention;

Fig. 15 is a flowchart of a recording / reproducing method for reading out and using the rewritable number of times characteristic low recorded on an information storage medium according to the present invention.

The present invention relates to a recording / reproducing apparatus, a recording / reproducing method, and an information storage medium thereof capable of preventing disc deterioration due to rewriting.

Optical recording discs are used for storage of general data such as documents or multimedia data such as video or music. Generally, an optical recording disc is divided into a disc which can be written once and a disc which can be rewritten. Rewritable optical discs include CD-RW, DVD ± RW and DVD-RAM. It is known that DVD-RAM can rewrite about 100,000 times and DVD-RW can generally rewrite 1000 times.

Rewritable discs are widely used in the market due to the advantage that they can be rewritten at a relatively high price, compared to discs such as DVD ± R, which can be written once. There is a problem that abnormal recording may be impossible. This problem occurs more often in the case of a disk having a multilayer structure for increasing disk capacity.

It is known that the number of rewritable DVD-RW discs is generally about 1000 times. This number is smaller than DVD-RAM, which is known to be capable of recording 100,000 times, but it is considered appropriate for recording and storing data or images. DVD ± RW discs with a single recording layer can store 4.5GB of data, but there is an increasing demand for media that can hold more capacity. Discs having a multi-layered structure have been developed as a method for storing more data than a single recording layer disk, and among them, a double recording layer type disk will be spread to the market first. The dual recording layer DVD-RW has a rewrite characteristic different from that of a conventional single recording layer disc.

Fig. 1 shows a graph showing the rewrite characteristics of layer 0 of a dual recording layer disc.

In the case of the dual recording layer disc DL, in order to enable recording of the layer 1, the rewriting characteristic of the layer 0 is worse than that of the conventional single recording layer disc SL. Therefore, in order to prevent disc damage caused by exceeding the number of rewrite times, unlike a single recording layer disc, which is generally known as 1000 times, a disc having a multi-layer structure may limit repetitive recording of a specific area before disc damage to prevent data loss. There is a need. In particular, when recording layer 0 of a dual recording layer disk, the need for limiting the number of repeated recordings becomes larger. However, in the case of discs manufactured to date, information regarding the number of rewritable times cannot be provided.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording / reproducing apparatus, a recording / reproducing method, and an information storage medium thereof, which can solve the above problems and prevent disc deterioration due to rewriting.

One feature of the present invention for solving the above problems is, in an information storage medium including at least one recording layer, a first area for recording data, and data can be recorded in the first area. And a second area for recording the rewritable count characteristic information indicating whether the information on the number of times of validity is valid.

The rewritable number of times characteristic information includes: a rewritable number validity flag indicating whether information on the number of times data can be recorded in the first area is valid, and the rewritable number comparison information of each recording layer included in the information storage medium. It is preferable to include.

The rewritable number of times characteristic information includes a rewritable number validity flag indicating whether information on the number of times data can be recorded in the first area is valid, and rewritable number information of each recording layer included in the information storage medium. It is preferable to include.

The rewritable number of times characteristic information may include a rewritable number validity flag indicating whether information on the number of times data can be recorded in the first area is valid and a rewritable number of times of each recording layer included in the information storage medium. It is preferable to include information and information on the number of rewritable times of each recording layer included in the information storage medium.

The rewritable number of times characteristic information may be rewritten to indicate whether information on the number of times data can be recorded in the first area is valid and information on comparison of the number of rewritable times of each recording layer included in the information storage medium. Preferably, the number of possible validity flags and information on the number of rewritable times of each recording layer included in the information storage medium are included.

The information indicating whether the information on the number of times data can be recorded in the first area is valid comprises information indicating that the information on the number of times is invalid and information indicating that the information on the number of times is valid. desirable.

Information indicating that the information on the number of times is valid includes information indicating that the first recording layer has a greater number of rewritable times than the second recording layer, and that the second recording layer has a greater number of rewritable times than the first recording layer. And information indicating that the number of rewritable times of the first recording layer and the second recording layer is the same.

The second area preferably includes at least one of a recording management area, a control data area, a land pre-pit area, and an ADIP area.

Another aspect of the present invention is a recording / reproducing apparatus for recording data on or reproducing data from an information storage medium including at least one recording layer, wherein the data is written to or read from the medium. The recording / reading unit is controlled to read out the recording / reading unit and the rewritable number characteristic information indicating whether the information on the number of times the data can be rewritten from the medium is valid; And a control unit for determining whether to use the information on the rewritable number of times.

The rewritable number of times characteristic information includes a rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid, and the rewritable number comparison information of each recording layer included in the information storage medium. The controller may further determine whether to use the rewritable number comparison information based on the rewritable number validity flag.

Preferably, the control unit further controls the recording / reading unit to record information on which rewriting occurs more frequently in a recording layer having a larger rewritable number based on the rewritable number comparison information.

The rewritable number of times characteristic information may include a rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid, and rewritable number information of each recording layer included in the information storage medium. The control unit may further determine whether to use the rewritable number information of each recording layer based on the rewritable number validity flag.

The rewritable number of times characteristic information may include rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid, rewritable number comparison information of each recording layer included in the information storage medium, and the like. And information on the number of rewritable times of each recording layer included in the information storage medium, and wherein the controller determines whether to use the rewritable number comparison information and the rewritable number information based on the rewritable number validity flag. It is desirable to determine more.

The rewritable number of times characteristic information includes information indicating whether information on the number of times data can be recorded on the medium is valid and rewritable number of times indicating information on comparison of the number of rewritable times of each recording layer included in the information storage medium. And a flag and information on the number of rewritable times of each recording layer included in the information storage medium, wherein the controller is configured to compare the rewritable number of times and the rewrite based on information indicating whether the information on the number of times of the rewritability is valid. It is desirable to further determine whether to use the available number of information.

A further aspect of the present invention is a recording / reproducing method for recording data on or reproducing data from an information storage medium including at least one recording layer, wherein the number of times the data can be rewritten from the medium is described. Reading the rewritable number of times characteristic information indicating whether the information is valid, and determining whether to use the information on the number of times of the rewritable times according to the read rewritable number of times characteristic information.

A further aspect of the present invention is an apparatus for recording data on an information storage medium including at least one recording layer, comprising: a recording unit for recording data on the medium, and a number of times that data can be rewritten in a predetermined area of the medium; And a control unit for controlling the recording unit to record the rewritable number characteristic information indicating whether the information on the information and the rewritable number of times is valid.

The predetermined area preferably includes at least one of a recording management area, a control data area, a land pre-pit area, and an ADIP area.

A further aspect of the present invention is a method of recording data on an information storage medium including at least one recording layer, the information on the number of times the data can be rewritten in a predetermined area of the medium and the number of rewritable times. And recording in advance rewritable number characteristic information indicating whether the information is valid.

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

2 shows an example of a layout of an information storage medium in which rewritable number of characteristic information can be recorded according to the present invention.

Referring to FIG. 2, a rewritable information storage medium 200 is provided with a recording information area 210 and an information area 220.

The recording information area 210 is provided with a power calibration area (PCA) 211 and a recording management area (RMA) 212. The PCA 211 is an area where an Optimal Power Calibration (OPC) is performed, and the RMA 212 is an area where recording management data (RMD) is recorded.

The lead-in area 221, the user data area 222, and the lead-out area 223 are provided in the information area 220. The lead-in area and the lead-out area are areas in which information on the rewritable information storage medium is recorded, and a control data area (not shown) is provided.

The control data area is an area in which embossed physical format information and disc manufacturing information, which are information on recording and reproduction of the present rewritable information storage medium, are recorded.

The user data area is an area for recording user data, and is provided with land pipits (LPPs) in which prepit data is recorded.

A rewritable information storage medium according to the present invention contains rewritable frequency characteristic information. The rewritable count characteristic information may include not only information related to the rewritable number but also information indicating whether information related to the rewritable number is valid.

Hereinafter, an area of a rewritable information storage medium on which rewritable frequency characteristic information can be recorded and a method of recording rewritable frequency characteristic information in the area will be described with specific examples.

3 shows embossed physical format information 300 in which rewritable number of time characteristic information of a user data area is recorded according to the present invention.

Referring to FIG. 3, the byte position 40 of the physical format information is recorded with one byte of "Data OverWrite or Direct OverWrite (DOW) Limitation", which is the number of rewritable times of the user data area according to the present invention. Corresponds to the characteristic information 100.

As described above, the reason for recording the rewritable frequency characteristic information 100 of the user data area in the physical format information is that the physical format information is information on recording and reproduction of the rewritable optical disc, and the rewritable frequency characteristic information of the user data area. This is because the information relates to the physical format information in that it is information about recording of a rewritable optical disc.

Also, the rewritable number of times characteristic information of the user data area can be recorded in the land prepit (LPP). More specifically, the rewritable frequency characteristic information of the user data area can be recorded in the prepit data PPD recorded in the land prepit.

4 shows prepit data 400 in which rewritable number of time characteristic information of a user data area is recorded according to the present invention.

Referring to FIG. 4, one field of "DOW Limitation" is recorded in a field having a field ID of 05h of the prepit data 400, and this "DOW Limitation" is rewritable frequency characteristic information 100 of the user data area. Corresponds to

Thus, the reason for recording the rewritable frequency characteristic information 100 of the user data area in the prepit data is information used for recording and reproducing the optical disc in which the prepit data is rewritable, and the rewritable frequency characteristic of the user data area. Since the information is related in this regard, the prepit data is suitable for recording the rewritable number of times characteristic information of the user data area.

Up to now, the case where the rewritable frequency characteristic information of the user data area is recorded in the emboss physical format information recorded in the control data area or the prepit data recorded in the land prepit has been described.

Hereinafter, the rewritable frequency characteristic information of the PCA will be described.

FIG. 5 shows a form in which rewritable frequency characteristic information of the PCA is further recorded in the prepit data shown in FIG. 4.

Referring to FIG. 5, the prepit data in which the rewritable frequency characteristic information of the PCA is further recorded in addition to the rewritable frequency characteristic information of the user data area. In FIG. 5, the rewritable count characteristic information of the user data area and the rewritable count characteristic information of the PCA constitute rewritable count characteristic information 100.

Referring to FIG. 5, it can be seen that one field of "PCA OverWrite Limitation" is stored in a field having a field ID of 05h of prepit data, and this "PCA OverWrite Limitation" corresponds to the rewritable frequency characteristic information of the PCA. do.

In addition, the rewritable frequency characteristic information of the PCA can be recorded in the byte position 41 of the physical format information.

On the other hand, when the rewritable optical disc has a multi-layer structure, the rewritable frequency characteristic differs depending on the recording layer. For example, in the case of a rewritable dual-layer structured optical disc, the rewritable number characteristic for layer 1 (L1) and the rewritable number characteristic for layer 0 (L0) are different.

Therefore, in the case of a rewritable multilayer structured optical disc, it is desirable to separately record the number of rewritable times for each recording layer.

Fig. 6 shows prepit data in which rewritable number of time characteristic information of each layer of a dual recording layer is recorded according to the present invention. The prepit data of FIG. 6 shows prepit data in which rewritable frequency characteristic information of the user data area provided in layer 1 of the dual recording layer disc is recorded.

Referring to FIG. 6, it can be seen that 1 byte of "DOW Limitation of L0" and 1 byte of "DOW Limitation of L1" are recorded in a field having a field ID of 06h of prepit data. It corresponds to the rewritable frequency characteristic information of the user data area provided in L0), and the latter corresponds to the rewritable frequency characteristic information of the user data area provided in the layer 1 (L1).

The rewritable frequency characteristic information of the user data area for each recording layer of the rewritable multilayer optical disc can be recorded in the control data area in addition to the land prepits. Description and drawings will be omitted.

In addition, information on the number of rewritable times of the PCA can also be separately recorded in each control layer in the control data area or the prepit data. That is, the rewritable frequency characteristic information of the PCA provided in the layer 0 (L0) and the PCA provided in the layer 1 (L1) can be rewritten in the physical format information recorded in the control data area or the prepit data recorded in the land prepit. It is of course possible to record the frequency characteristic information.

Up to now, the rewritable frequency characteristic information has been described as being recorded in the physical format information or the prepit data. However, the format of the physical format information and prepit data on which the rewritable frequency characteristic information is recorded is not necessarily the format shown in the drawings, and may be in a different format.

FIG. 7 shows physical format information 700 in which rewritable frequency characteristic information of a user data area is recorded in a structure different from that shown in FIG.

In addition, in the present embodiments, the case where the rewritable frequency characteristic information is recorded in the control data area or the land prepit has been described. However, the area in which the rewritable frequency characteristic information is recorded is not limited to these, and of course, may be recorded in a different area from these. Another area in which rewritable frequency characteristic information can be recorded is a recording management area (RMA). That is, the rewritable frequency characteristic information may be included in the recording management data RMD recorded in the recording management area RMA.

On the other hand, the rewritable frequency characteristic information has been described above as being represented by one byte, but it is not necessarily required to be represented by one byte. That is, there is no restriction on the length of the rewritable frequency characteristic information.

There are also various ways of representing the rewritable frequency characteristic information, and there is no limitation to this. An example of a method of representing rewritable frequency characteristic information is now described with reference to FIGS. 8A to 12B.

8A to 8F show an example of rewritable number of time characteristic information according to the present invention. 8A shows an example in which only the information on the number of rewritable times is contained in the rewritable number of times characteristic information.

Referring to FIG. 8A, the rewritable number of times characteristic information 100 is composed of 1 byte. Referring to FIG. 8B, when all 8 bits are "0", it indicates that the number of rewritable times is 200 times. See FIG. 8C. When the least significant bit b0 is "1", it indicates that the number of rewritable times is 400 times. Referring to FIG. 8D, when the b1 bit is "1", it indicates that the number of rewritable times is 600 times. When the b2 bit is "1", it indicates that the number of rewritable times is 800 times. Referring to FIG. 8F, when the b3 bit is "1", it indicates that the number of rewritable times is 1000 times.

The range of the rewritable number of times shown in Figs. 8A to 8F is merely an example and can be set to other ranges.

9 shows another example of rewritable frequency characteristic information according to the present invention.

Referring to FIG. 9, the rewritable number of times characteristic information 100 is a method of recording the maximum number of times of rewritable times directly in the rewritable number of times characteristic information 100, rather than indicating the number of times of rewriting as a value of a predetermined interval.

10 shows another example of rewritable frequency characteristic information according to the present invention.

Referring to FIG. 10, the rewritable number characteristic information 100 includes a rewritable number validity flag 110. The rewritable number validity flag 110 refers to a flag indicating whether information related to the rewritable number is valid. Thus, when this flag 110 indicates "valid", the recording / reproducing apparatus indicates that information relating to the number of rewritable times is available, and when this flag 110 indicates "valid", recording / The playback apparatus indicates that information relating to the number of rewritable times is not available. Of course, in this case, the information related to the rewritable number of times may be recorded in a different area from the rewritable frequency characteristic information.

11 shows another example of rewritable frequency characteristic information according to the present invention.

Referring to FIG. 11, the rewritable count characteristic information 100 includes a rewritable count validity flag 110 and rewritable count comparison information 120 of each layer.

The rewritable number validity flag 110 refers to a flag indicating whether information related to the rewritable number is valid as shown in FIG. 10. The rewritable number comparison information 120 of each layer is information obtained by comparing the number of rewritable times of each layer when the information storage medium is composed of multiple layers. For example, when the information storage medium is composed of two layers, the first information is compared. The layer may include information indicating whether the number of times of rewriting is greater, whether the number of times of rewriting is greater than that of the second layer, or whether the number of times of rewriting of the first layer and the second layer are the same. Of course, in this case, the rewritable number of times information may be recorded in a different area from the rewritable number of times characteristic information.

12 shows another example of rewritable frequency characteristic information according to the present invention.

Referring to FIG. 12, the rewritable times characteristic information 100 further includes rewritable times validity flag 110 and rewritable times comparison information 120 of each layer, and rewritable times information 130 of each layer. .

13A and 13B show another example of rewritable number of time characteristic information according to the present invention.

Referring to FIG. 13A, the rewritable frequency characteristic information 100 composed of 1 byte includes a 2-bit DOW descriptor flag 140 composed of b7 b6 and a 3-bit DOW limitation for layer 1 composed of b5-b3 ( 150) and a 3-bit DOW limitation for layer 0 (160) consisting of b2-b0. The DOW limitation for layer 1 150 and the DOW limitation for layer 0 160 indicate the number of rewritable times of layer 1 and the number of rewritable times of layer 0, respectively. The DOW descriptor flag 140 shows information indicating whether information related to the number of rewritable times is valid and information on comparison of the number of rewritable times of each layer. The specification of the byte structure shown in FIG. 13A is shown in FIG. 13B.

 Referring to Fig. 13B, when the b7 b6 bit is "00", the information related to the number of rewritable times is invalid. In other cases, the information related to the number of rewritable times is valid.

In other cases, that is, when the b7 b6 bit is "01", information related to the number of rewritable times is valid, and the number of rewritable times in layer 1 is greater than the number of rewritable times in layer 0, and rewritable in case of "10". The information related to the number of times is valid, indicating that the number of rewritable times of layer 0 is greater than the number of rewritable times of layer 1. "11" indicates that information related to the number of rewritable times is valid and that the number of rewritable times of layer 0 and the number of rewritable times of layer 1 are the same.

In the case of DOW limitation for layer 1 (150) and DOW limitation for layer 0 (160), "000" indicates that the number of rewritable times is 1000 or more, and "001" indicates 200 times of rewritable times. "010" indicates that the number of rewritable times is 400 times, "011" indicates that the number of rewritable times is 600 times, and "100" indicates that the number of rewritable times is 800 times, and the remaining bits. In the case of a combination, it represents reserved.

There is no limitation on the type of rewritable optical disc to which the present invention is applicable. That is, the present invention can be applied to a rewritable compact disk (CD), a digital video disk (DVD), a blue-ray disk (BD), as well as to an HD-DVD. Furthermore, the present invention can be applied not only to a rewritable single-layer optical disc, but also to a recordable multi-layer optical disc having a plurality of recording layers.

Fig. 14 is a schematic diagram of a recording / reproducing apparatus for reading and using rewritable frequency characteristic information recorded on an information storage medium according to the present invention.

Referring to FIG. 14, the recording / reproducing apparatus 10 according to the present invention is a device capable of recording and / or reproducing, and includes a recording / reading unit 20 and a control unit 30. The recording / reading unit 20 records data in the information storage medium 200 according to the present invention under the control of the controller 30, and reads the data to reproduce the recorded data. The control unit 30 controls the recording / reading unit 20 or writes / reads the data to the data storage medium 200 or to read data from the information storage medium 200 according to the command of the host 40. The data read out in step 20) is processed to obtain valid data. Although the host 40 is illustrated outside the recording / reproducing apparatus 10 in FIG. 14, the host 40 is not limited thereto, and the host 40 may be implemented to be arranged inside the recording / reproducing apparatus 10.

In particular, when loading the information storage medium 200 according to the present invention, the control unit 30 controls the recording / reading unit 20 to read the rewritable number of times characteristic information from a predetermined area of the information storage medium 200, and reads it. The recording / reading unit 20 is controlled to record data on the information storage medium 200 based on the rewritable number of times characteristic information.

According to an aspect of the present invention, the rewritable number of times characteristic information includes: a rewritable number of times valid flag indicating whether information on the number of times user data can be recorded in the first area is valid; Includes rewritable number comparison information of the recording layer, and the control unit 30 determines whether to use the rewritable number comparison information based on the rewritable number validity flag.

The control unit 30 further controls the recording / reading unit 20 to record information on which rewriting occurs more frequently in a recording layer having a larger number of rewritable times, based on the rewritable number comparison information.

According to another aspect of the present invention, the rewritable number of times characteristic information includes: a rewritable number of times valid flag indicating whether information on the number of times that user data can be recorded in the first area is valid, and each included in the information storage medium. Information on the number of rewritable times of the recording layer, and the controller 30 determines whether to use the number of times of rewritability of each recording layer based on the validity of the number of times of rewriting.

According to still another aspect of the present invention, the rewritable number of times characteristic information includes: a rewritable number of times valid flag indicating whether information on the number of times user data can be recorded in the first area is valid, and included in the information storage medium. A rewritable number comparison information of each recording layer, and rewritable number information of each recording layer included in the information storage medium, wherein the control unit 30 controls the rewritable number of times based on the rewritable number validity flag. It is determined whether to use the comparison information and the rewritable number of times information.

According to still another aspect of the present invention, the rewritable number of times characteristic information includes information indicating whether information on the number of times that user data can be recorded in the first area is valid and rewriting each recording layer included in the information storage medium. And a rewritable number validity flag indicating together the number of possible number comparison information, and rewritable number information of each recording layer included in the information storage medium. The controller 30 determines whether the information on the number of rewritable times is valid. Based on the information indicated, it is determined whether to use the rewritable number comparison information and the rewritable number information.

In the above, only the recording / reproducing apparatus for recording data on or reproducing data from the information storage medium on which the rewritable number of times characteristic information is recorded has been described. However, in order to use the rewritable number characteristic information recorded on the information storage medium in this manner in the recording / reproducing apparatus, the rewritable number characteristic information must be previously recorded in a predetermined area of the medium at the time of manufacture of the information storage medium. The apparatus for recording the rewritable frequency characteristic information at the time of manufacture of the information storage medium is also not significantly different from the schematic structure of the recording / reproducing apparatus shown in FIG. In other words, when the information storage medium is manufactured, the number of rewritable times of the information storage medium may be examined, the number of times of rewritable characteristics may be determined, and the determined number of times of rewritable characteristics may be recorded in a predetermined area of the information storage medium.

15 is a flowchart of a recording / reproducing method of reading and using rewritable number of time characteristic information recorded on an information storage medium according to the present invention.

First, the controller of the recording / reproducing apparatus reads out the rewritable number of times characteristic information from the information storage medium according to the present invention (1510).

Next, the controller determines whether to use the information on the rewritable number of times according to the read-out number of times characteristic information read (1520).

Then, according to the determination, the control unit records data in the medium with or without using information on the number of rewritable times (1530). That is, when the rewritable number of times characteristic information indicates that the information on the number of rewritable times is not valid, data may be recorded on the medium without using the information on the number of the rewritable times. When the information on the number of times of rewritability is valid, data is recorded on the medium using the information of the number of times of rewritability. For example, the information on the number of rewritable times may be used in such a manner that data to be corrected more frequently is recorded in a recording layer having a large number of rewritable times, and data to be corrected less frequently in a recording layer having a small number of rewritable times. Can be.

The recording / reproducing method as described above can also be embodied as computer readable codes on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in 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, by providing the information corresponding to the upper limit of the number of rewrites through the on-board information, it is possible to prevent the deterioration of the disc due to repeated rewriting of a specific area. To do this, the information to be stored in a specific location of the control data area, land prepit or ADIP of the disk is recorded in advance, and the characteristics are superior in preventing the deterioration of the disk by using this information when the actual disk is used. Since the information of the in layer is included, stable recording and reproduction characteristics can be obtained.

In addition, it includes information on the upper limit of the number of rewrites and recording layer information having superior repetition characteristics. It is expected that there will be more usefulness as the need for a disk having a multi-layer structure increases for recording capacity expansion. In this case, you can check the status of the disk by using the relevant information, and many other methods of use can be considered.

Further, in the rewritable optical disc recording / reproducing apparatus, by using a method of preparing flag information whether the rewritable number of times upper limit value information is valid, it is possible to easily determine the information processing of the number of times of rewrite.

Claims (24)

An information storage medium comprising at least one recording layer, A first area for recording data, And a second area for recording rewritable count characteristic information indicating whether information on the number of times data can be recorded in the first area is valid. The method of claim 1, The rewritable frequency characteristic information is, A rewritable number validity flag indicating whether information on the number of times data can be recorded in the first area is valid; And a rewritable number comparison information of each recording layer included in the information storage medium. The method of claim 1, The rewritable frequency characteristic information is, A rewritable number validity flag indicating whether information on the number of times data can be recorded in the first area is valid; And information on the number of rewritable times of each recording layer included in the information storage medium. The method of claim 1, The rewritable frequency characteristic information is, A rewritable number validity flag indicating whether information on the number of times data can be recorded in the first area is valid; Rewritable number comparison information of each recording layer included in the information storage medium; And information on the number of rewritable times of each recording layer included in the information storage medium. The method of claim 1, The rewritable frequency characteristic information is, A rewritable number validity flag indicating information indicating whether information on the number of times data can be recorded in the first area is valid and information on comparison of the number of rewritable times of each recording layer included in the information storage medium; And information on the number of rewritable times of each recording layer included in the information storage medium. The method of claim 5, Information indicating whether the information on the number of times data can be recorded in the first area is valid, And an information indicating that the information on the number of times is invalid and information indicating that the information on the number of times is valid. The method of claim 6, Information indicating that the information on the number of times is valid, Information indicating that the first recording layer has a greater number of rewritable times than the second recording layer, Information indicating that the second recording layer has a greater number of rewritable times than the first recording layer, And information indicating that the number of rewritable times of the first recording layer and the second recording layer is the same. The method of claim 1, The second area is, An information storage medium comprising at least one of a recording management area, a control data area, a land pre-pit area, and an ADIP area. A recording / reproducing apparatus for recording data on or reproducing data from an information storage medium including at least one recording layer, A recording / reading unit for recording data on or reading data from the medium; Control the recording / reading unit to read rewritable number characteristic information indicating whether information on the number of times data can be rewritten from the medium is valid, and information on the rewritable number according to the read rewritable number characteristic information And a control unit for determining whether or not to use. The method of claim 9, The rewritable number of times characteristic information includes a rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid, and the rewritable number comparison information of each recording layer included in the information storage medium. , And the control unit further determines whether to use the rewritable number comparison information based on the rewritable number validity flag. The method of claim 10, The control unit, And the recording / reproducing unit is further controlled to record information on which rewriting occurs more frequently in a recording layer having a larger rewritable number based on the rewritable number comparison information. The method of claim 9, The rewritable number of times characteristic information includes a rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid, and rewritable number information of each recording layer included in the information storage medium. , And the control unit further determines whether or not to use the rewritable number information of the respective recording layers based on the rewritable number validity flag. The method of claim 9, The rewritable number of times characteristic information includes: a rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid; information on comparison of the number of rewritable times of each recording layer included in the information storage medium; Information on the number of rewritable times of each recording layer included in the information storage medium; And the control unit further determines whether or not to use the rewritable number comparison information and the rewritable number information based on the rewritable number validity flag. The method according to claim 9, The rewritable number of times characteristic information includes information indicating whether information on the number of times data can be recorded on the medium is valid and rewritable number of times indicating information on comparison of the number of rewritable times of each recording layer included in the information storage medium. A flag and information on the number of rewritable times of each recording layer included in the information storage medium, And the control unit further determines whether to use the rewritable number comparison information and the rewritable number information based on the information indicating whether the information on the rewritable number of times is valid. A recording / reproducing method for recording data on or reproducing data from an information storage medium including at least one recording layer, Reading rewritable count characteristic information indicating whether information on the number of times data can be rewritten is valid from the medium; And determining whether to use the information on the rewritable number of times according to the read rewritable number of times characteristic information. The method of claim 15, The rewritable number of times characteristic information includes a rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid, and the rewritable number comparison information of each recording layer included in the information storage medium. , And determining whether to use the rewritable number comparison information based on the rewritable number validity flag. The method of claim 16, And recording information on which rewriting occurs more frequently in a recording layer having a greater number of rewritable times, based on the rewritable number comparison information. The method of claim 15, The rewritable number of times characteristic information includes a rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid, and rewritable number information of each recording layer included in the information storage medium. , And determining whether to use the rewritable number information of each recording layer based on the rewritable number validity flag. The method of claim 15, The rewritable number of times characteristic information includes: a rewritable number validity flag indicating whether information on the number of times data can be recorded on the medium is valid; information on comparison of the number of rewritable times of each recording layer included in the information storage medium; Information on the number of rewritable times of each recording layer included in the information storage medium; And determining whether to use the rewritable number comparison information and the rewritable number information based on the rewritable number validity flag. The method of claim 15, The rewritable number of times characteristic information includes information indicating whether information on the number of times data can be recorded on the medium is valid and rewritable number of times indicating information on comparison of the number of rewritable times of each recording layer included in the information storage medium. A flag and information on the number of rewritable times of each recording layer included in the information storage medium, And determining whether to use the rewritable number comparison information and the rewritable number information based on the information indicating whether the information on the rewritable number of times is valid. An apparatus for recording data in an information storage medium including at least one recording layer, A recording unit for recording data on the medium; And a control unit for controlling the recording unit to record information on the number of times data can be rewritten in a predetermined area of the medium and rewritable number characteristic information indicating whether the information on the number of rewritable times is valid. Device. The method of claim 21, The predetermined area, And at least one of a recording management area, a control data area, a land pre-pit area, and an ADIP area. A method of recording data on an information storage medium comprising at least one recording layer, And recording in advance the information on the number of times data can be rewritten in the predetermined area of the medium and the rewritable number characteristic information indicating whether the information on the number of rewritable times is valid. The method of claim 23, wherein The predetermined area, And at least one of a recording management area, a control data area, a land pre-pit area, and an ADIP area.

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