KR100608029B1 - Recording/reproducing method - Google Patents

Abstract

Disclosed are a recording / reproducing apparatus, a recording / reproducing method, and an information storage medium thereof, which enable to quickly find a disc information structure and ensure compatibility between standards.

The recording / reproducing method according to the present invention is a recording / reproducing method for recording data to or reading data from an information storage medium having one or more information recording layers, wherein each disc information structure is provided from the information storage medium. Reading one or more disc information structures, comprising: information on recording characteristics of the information storage medium and information on recording related parameters corresponding to the recording characteristics; / Find a disc information structure having information on a recording characteristic related to the reproduction apparatus and record the data on the information storage medium with reference to the information on the recording related parameters corresponding to the recording characteristic included in the disc information structure. Steps. According to the present invention as described above, parameters of recording characteristics suitable for the recording / reproducing apparatus can be found quickly, and compatibility between the standards can be achieved.

Description

Recording / Playback method {Recording / reproducing method}

1 is a reference diagram for explaining a problem of disk compatibility according to the prior art;

2 is a structural diagram of a disk to which the present invention is applied;

3 is a data structure diagram of a disc information structure according to the present invention;

4 is a reference diagram for explaining compatibility of a disc information structure according to an embodiment of the present invention;

5 is an example of a disc information structure recorded on a version 1.0 disc shown in FIG. 4;

6 is an example of a disc information structure recorded on a version 1.1 disc shown in FIG. 4;

FIG. 7 is an example of a disc information structure recorded on the version 1.2 disc shown in FIG. 4;

8 is an example of a recording / reproducing apparatus according to the present invention;

9 is a flowchart showing the procedure of the recording / reproducing method according to the present invention.

The present invention relates to a recording / reproducing apparatus, a recording / reproducing method, and an information storage medium thereof, which make it possible to find a disk information structure more quickly.

In general, an optical disk is widely used as an information recording medium of an optical pickup apparatus for recording / reproducing information in a non-contact manner, and is used as a compact disk (CD) or a digital versatile disk (DVD) according to the information recording capacity. Are distinguished. In addition, optical discs capable of recording, erasing, and reproducing include 650MB CD-R, CD-RW, 4.7GB DVD + RW, and the like, and only 650MB CD, 4.7GB DVD-ROM, and the like. Furthermore, HD-DVDs with a recording capacity of 25GB or more are being developed.

As a result of the recent development of optical disk technology and semiconductor technology, a new function, the number of recording layers, and the recording speed have been decided since the specifications for the optical disk drive system and the optical system including the optical disk were first determined. In addition, addition of a write strategy is frequently used, and in this case, an initially determined standard needs to be updated.

1 is a reference diagram for explaining a problem of disc compatibility according to the prior art.

When the old standard is called the "old standard" and the updated standard is called the "new standard" by adding the number of recording layers, the recording speed or the recording strategy to the old standard, the old standard disk 110 is the old standard drive system. The new standard disk 120 is made to operate in the new standard drive system 121.

The old and new standards may or may not be compatible with recording / playback due to added features, such as the number of recording layers, the recording speed or the recording strategy. The two standards achieve recording / playback compatibility, indicating that the old standard disc 110 used in the old standard drive system 111 can be recorded / played in the new standard drive system 121, and also new The new standard disc 120 used in the standard drive system 121 indicates that recording / reproducing is possible in the old standard drive system 111 as well.

In order to ensure mutual recording / playback compatibility between the old standard and the new standard and the two standards by the addition of the new characteristics, when the disc 120 of the new standard with the new function is loaded in the drive system 111 of the old standard There is a need for the old standard drive system 111 to respond appropriately to its new functionality. To this end, when the old standard is enacted, it is necessary to prepare a proper response to the addition of new features in the future. In addition, this appropriate countermeasure should be a general statement applicable to the new specification. The reason is that it should be applicable when updated to a newer specification by adding new features to the new specification.

As a result, in order to have mutual recording / playback compatibility between a series of specifications resulting from the addition of new features, it is necessary to prepare for the addition of new features when the specification is first created. To do this, it is necessary to establish rules that drive systems should operate on characteristics known by the current specification and common rules on how the current drive system should operate on features added in the future that the current specifications do not know. That is, even if discs of different standards are recorded on the disc in the form of information that can be commonly recognized about the characteristics of the discs, the discs of the future with the new characteristics added to the drive system of the current standard are loaded. Even if it is possible, the disc can be used to read the information recognizable.

Therefore, there is a need for a disc information structure and a recording method of the disc information structure to ensure the flexibility and expandability of the disc information structure when a variable such as a recording strategy is added in addition to the number of recording layers or the recording speed.

In addition, when a plurality of disc information structures exist in one medium, it is required to quickly find a disc information structure suitable for the recording characteristics from the plurality of disc information structures.

Disclosure of Invention It is an object of the present invention to provide a recording / reproducing apparatus, a recording / reproducing method, and an information storage medium for solving the above problems to quickly find a disk information structure and to guarantee the flexibility and expandability of the disk information structure. It is done.

One feature of the present invention for solving the above problems is, in the recording / reproducing apparatus, a recording / reading unit for recording data to or reading data from an information storage medium having one or more information recording layers And one or more disc information structures recorded on the information storage medium, the information relating to recording related parameters corresponding to the recording characteristics of the information storage medium and the information relating to the recording characteristics to which the recording related parameters are applied. And a control unit for controlling the recording / reading unit to record data in the information storage medium with reference.

The information about the recording characteristic preferably includes at least one of a recording speed, a recording layer, and recording strategy (WS) identification information.

The recording speed and the recording layer included in the information on the recording characteristics preferably indicate the recording speed and the recording layer to which the recording related parameters in the disc information structure can be applied.

The WS identification information included in the information relating to the recording characteristic indicates a recording strategy described by recording related parameters in the disc information structure, and the predetermined recording strategy and the predetermined unrelated to the recording strategy. It is preferable to represent the information representing a combination of functions.

The information storage medium may be one of a read-only type, a rewritable type, or a write once type.

The control unit may further find information on the recording characteristic of the recording / reproducing apparatus from information on the recording characteristic included in the one or more disc information structures to obtain recording related parameters suitable for the recording / reproducing apparatus. desirable.

The controller also determines a recording characteristic suitable for the recording / reproducing apparatus, finds a disk information structure including information on the determined recording characteristic from the one or more disk information structures, and searches for the found disk information structure. It is preferable to further control the recording / reading unit to record data on the information storage medium by using included recording related parameters.

Another aspect of the present invention is a recording / reproducing method for recording data to or reading data from an information storage medium having one or more information recording layers, wherein the information storage medium is recorded on the information storage medium. Recording data on the information storage medium with reference to one or more disc information structures including information about recording related parameters corresponding to a recording characteristic and information about the recording characteristic to which the recording related parameters are applied; will be.

A further aspect of the invention is an information storage medium having at least one information recording layer, said information relating to recording-related parameters corresponding to the recording characteristics of said information storage medium and to said recording characteristics to which said recording-related parameters are applied. One or more disc information structures containing information relating to the information are recorded in a predetermined area of the information storage medium.

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

2 is a structural diagram of a disk to which the present invention is applied.

Referring to Fig. 2, a lead-in area is provided at the innermost periphery of the disc, a lead-out area is provided at the outermost periphery, and a user data area in which user data is recorded between the lead-in area and the lead-out area is provided.

The lead-in area consists of a pre-recorded zone and a recordable area in which predetermined information has already been recorded at the time of disc manufacture.

The recordable area includes a buffer that serves as a buffer between the pre-recorded area and the recordable area, a defect management area for recording information about a defect, such as an address of replacement data that replaces defect data generated in the user data area, and a user. A test area provided for performing inspection to obtain an optimal recording power when data is recorded in the data area, and a drive / disk state information area for recording information related to the state of the drive or disk.

The pre-recorded area is a control data area in which control data is recorded, and includes information on disc type and version information, disc size, disc structure, disc speed, recording parameters, and the like. In this control data area, in particular, the disc information structure according to the present invention can be recorded. The disc information structure according to the present invention will be described with reference to FIG.

3 is a data structure diagram of a disc information structure according to the present invention.

In the present invention, as shown in Figure 3, the disk information structure 300, the common information table 310, the parameter recognition information table 320, It is divided into a parameter table 330.

The common information table 310 includes information on the storage medium type 311, the number of information storage layers 312, and the corresponding recording speed 313. The storage medium type 311 indicates information such as whether it is a recording medium, a rewritable medium, or reproduction only. The number of information storage layers 312 represents the total number of information storage layers possessed by the medium, and the corresponding recording speed 313 refers to the recording speed information supported by the medium. It is also possible to indicate that each of the possible recording speed information itself, for example this medium is capable of 1,2,4,6 times speed.

The parameter recognition information table 320 includes a recording speed 321 to which recording related parameters stored in the parameter table 330 of this disc information structure is applied, a recording layer 322 and a recording strategy of the recording related parameters. And recording strategy (WS) identification information 323 indicating whether or not it is (Write Strategy).

The recording speed 321 refers to the recording speed at which the recording related parameters in the parameter table of this disc information structure are applied, and the recording layer 322 indicates the recording layer to which the recording related parameters in the parameter table of this disc information structure are applied. In other words, the WS identification information 323 indicates which WS is the recording strategy recorded in the parameter table of this disc information structure. Of course, this requires a representative number for each recording strategy WS.

 Here, the representative number for the WS is not limited to one recording strategy, and the representative number may increase in various ways as the standard is upgraded due to the addition of other information not related to the WS. In other words, if the write strategy indication information in the disc information structure of the disc for the standard indicates "1" at the time of the first specification, the recording related parameters in the parameter table of the disc information structure are WS A. You will be able to make an appointment. After that, when the specification is updated due to the addition of a new speed, and WS B is required, the updated specification has two recording strategies, WS A and WS B. When updating the specification, only the speed and the corresponding WS are added. Since there is no number, the addition of other information Alpha can be expected. Therefore, if the write strategy identification information in the disc information structure of the disc for the updated specification indicates "2", then the recording related parameters in the parameter table of the disc information structure including the function Alpha will indicate WS A. And if the recording strategy identification information in the disc information structure indicates "3", then the recording related parameter in the parameter table of the disc information structure including the function of Alpha may indicate WS B. . As such the disc information structure will be written onto the disc by such appointments. As a result of the update of the specification, when various types of media exist and such media are loaded into the drive system, the drive system plays back the disc information structures recorded on the media. It can be seen that the recording related parameter in the parameter table of the disc information structure indicates WS A. If the recording strategy identification information is 3, the recording related parameter in the parameter table of the disc information structure indicates WS B. It can be seen that. Afterwards, as the specification is updated, the representative number indicating WS A and the representative number indicating WS B may be added by appointment at the time of enactment.

The parameter table 330 is a recording parameter as a pulse period Ttop at the start of recording, a pulse period Tmp at the middle of recording, a pulse period Tcl at the end of recording, a recording power Pw, an erasing power Pe, Bias power (Pb) and the like, and in particular, it includes the recording speed, recording layer, recording strategy identification information according to the present invention. In addition, the parameter table 330 may include playback related parameters, depending on the implementation.

As described above, in the disc information structure according to the present invention, the disc information structure has parameter information about which recording speed, which recording layer, and which recording strategy by setting the recording speed, recording layer, and WS identification information in the parameter recognition information table. It can be known only by recognizing the parameter recognition information table. In other words, the present invention indicates, by the parameter recognition information table, what is the recording speed, recording layer, and recording strategy recorded in the parameter table of the disc information structure so that the recording related information can be quickly known.

For example, assume that there are two recording layers, a corresponding write speed is 1x speed, and two write strategies (WS1, WS2). At this time, the disk drive can know from the parameter recognition information table which record-related parameters stored in the parameter table of this disk information structure to which speed and to which recording layer it intends to apply, and also from the WS identification information stored in the parameter table. Without reading the recording related parameters, it is possible to know which recording strategy this disc information structure is to apply. That is, according to the present invention, the recording speed field and the recording layer field in the parameter recognition information table indicate the recording speed and the recording layer to be applied by the disc information structure, respectively, and WS identification information = "1", for the WS1; For WS2, WS identification information = "2", which indicates the recording speed and recording layer to which the recording related parameters stored in the parameter table are applied, and also displays information such as Ttop, Tmp, Tcl, etc. in the parameter table. It is possible to know which WS recording related parameters are stored at least in the parameter table of this disc information structure without reading them.

For example, if the drive speed is 1x and the drive system that wants to write to recording layer 0 supports only WS1, the drive system writes at 1x speed from the parameter recognition information table of each disc information structure of the disc information. Find the disk information structure that contains the disk information about layer 0, WS1 and record using the parameters of WS1 specified in the parameter table of the disk information structure. In this way, the drive system can quickly find the recording-related parameter information necessary for recording from the parameter recognition information table, thereby improving the disk usage.

4 is a reference diagram for explaining compatibility of a disc information structure according to an embodiment of the present invention.

In the first specification, the WS identification information applicable to the original 1x speed is named "1", and the new 2x speed can be applied by adding the 2x speed as the new specification, that is, the 2nd updated from the 1st standard. When recording strategy B is added, its WS identification information is named "2", and it is also applicable to quadruple speed by adding quadruple speed, such as the third specification updated from the second standard, and also with double speed. Name the WS identification of the new write strategy C as possible as "3". In this way, by numbering sequentially in the order of appearance of recording strategies, a plurality of recording strategies can be managed and compatibility between the standards is facilitated.

That is, if there are three types of write strategies A, B, and C, and a rule for identifying WS with A = 1, B = 2, and C = 3 is defined, the WS identification information is "1". Indicates the recording strategy A. If the WS identification information is "2", it indicates the recording strategy B, and if the WS identification information is "3", the recording strategy C is shown.

Referring to Fig. 4, a disc (rewritable information storage medium) and drive system of three standards are shown.

The first standard version 1.0 disk 410 has a characteristic of 1x speed, 2 layers of recording layers, and WS A. The second standard version 1.1 disk 420 has 1x speed, 2x speed, 2 layers of recording layers, and WS. With the characteristics of A and WS B, the third standard version 1.2 disk 430 has the characteristics of 1x, 2x, 4x, 2 layers of recording layers, WS A, WS B, WS C.

As described above, when the first standard is gradually updated and the third standard is updated, the order in which the disk information structure is recorded in the disk information area and the use of the recording strategy identification information are as follows.

First, for convenience of explanation, the following assumptions are made.

Let's say that WS A can only be applied at 1x speed in all specifications, WS B can only apply at 2x speed in the second and third specifications, and WS C can be applied at 2x and 4x speed in the third specification. The possible number and recorded forms of the disc information structures recorded on the disc information area in accordance with respective standards at that time are shown in Figs. 5 to 7, respectively.

FIG. 5 is an example of a disc information structure recorded on the version 1.0 disc shown in FIG.

Referring to FIG. 5, the entire disc information structure includes disc information structure # 1 510 and disc information structure # 2 520.

The common information table 511 of the disc information structure # 1 510, the common information table 521 of the disc information structure # 2 520, all have a storage medium type = "rewrite", the number of information storage layers = "2", The corresponding recording speed = "1" is recorded.

In the parameter recognition information table 512 of the disc information structure # 1 510, the recording speed = " 1 ", the recording layer = " 1 ", and the WS identification information = " 1 " Information contained in the parameter recognition information table 512, that is, recording-related parameter information about (recording speed, recording layer, WS identification information) = (1, 1, 1), is recorded. Here, the recording speed = 1 indicates that the recording speed is 1x speed, the recording layer = 1 indicates one layer among the two recording layers, and the WS identification information = 1 indicates WS A.

In the parameter recognition information table 522 of the disc information structure # 1 520, the recording speed = " 1 ", the recording layer = " 2 ", and the WS identification information = " 1 " Information contained in the parameter recognition information table 522, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (1, 2, 1), is recorded.

FIG. 6 is an example of a disc information structure recorded on the version 1.1 disc shown in FIG.

Referring to FIG. 6, the entire disc information structure includes a disc information structure # 1 610, a disc information structure # 2 620, a disc information structure # 3 630, and a disc information structure # 4 640. .

From the disc information structure # 1 610 to the common information table (not shown) of the disc information structure # 4 640, the storage medium type = "rewrite", the number of information storage layers = "2", the corresponding recording speed = "1, 2" can be recorded.

In the parameter recognition information table 611 of the disc information structure # 1 610, the recording speed = " 1 ", the recording layer = " 1 ", and the WS identification information = " 1 " Information contained in the parameter recognition information table 611, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (1, 1, 1), is recorded. In Fig. 6, for convenience, P = (recording rate, recording layer, WS) is shown as an ordered pair, for example, P = (V, L, N) is designated as VX recording rate, Lth recording layer, N. Represents a WS. As described above, the value of N to represent a specific WS is not limited to one, but may exist in various ways by appointment due to addition of new information or update of a specification.

In the parameter recognition information table 621 of the disc information structure # 2 620, recording speed = " 1 ", recording layer = " 2 ", and WS identification information = " 1 " Information contained in the parameter recognition information table 621, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (1, 2, 1), is recorded.

In the parameter recognition information table 631 of the disc information structure # 1 630, recording speed = " 2 ", recording layer = " 1 ", and WS identification information = " 2 " Information contained in the parameter recognition information table 631, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (2, 1, 2) is recorded.

In the parameter recognition information table 641 of the disk information structure # 1 640, recording speed = " 2 ", recording layer = " 2 ", and WS identification information = " 2 " Information contained in the parameter recognition information table 641, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (2, 2, 2), is recorded.

FIG. 7 is an example of a disc information structure recorded on the version 1.2 disc shown in FIG.

Referring to FIG. 7, the entire disc information structure includes a disc information structure # 1 710, a disc information structure # 2 720, a disc information structure # 3 730, a disc information structure # 4 740, and disc information. A structure # 5 750, a disc information structure # 6 760, a disc information structure # 7 770, and a disc information structure # 8 780.

From the disc information structure # 1 710 to the common information table (not shown) of the disc information structure # 8 780, the storage medium type = " rewrite ", the number of information storage layers = " 2 ", and the corresponding writing speed = "1, 2, 4" can be recorded.

In the parameter recognition information table 711 of the disc information structure # 1 710, the recording speed = " 1 ", the recording layer = " 1 ", and the WS identification information = " 1 " Information contained in the parameter recognition information table 711, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (1, 1, 1) is recorded. Here, the recording speed = 1 indicates that the recording speed is 1x speed, the recording layer = 1 indicates one layer among the two recording layers, and the WS identification information = 1 indicates WS A.

In the parameter recognition information table 721 of the disc information structure # 2 720, recording speed = " 1 ", recording layer = " 2 ", and WS identification information = " 1 " Information contained in the parameter recognition information table 721, that is, recording-related parameter information about (recording speed, recording layer, WS identification information) = (1, 2, 1) is recorded.

In the parameter recognition information table 731 of the disc information structure # 1 730, the recording speed = "2", the recording layer = "1", and the WS identification information = "2" are recorded. In the parameter table 732, the above information is recorded. Information contained in the parameter recognition information table 731, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (2, 1, 2) is recorded.

In the parameter recognition information table 741 of the disc information structure # 1 740, the recording speed = " 2 ", the recording layer = " 2 ", and the WS identification information = " 2 " Information contained in the parameter recognition information table 741, i.e., recording-related parameter information about (recording speed, recording layer, WS identification information) = (2, 2, 2) is recorded.

In the parameter recognition information table 751 of the disc information structure # 5 750, recording speed = " 2 ", recording layer = " 1 ", and WS identification information = " 3 " Information contained in the parameter recognition information table 751, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (2, 1, 3) is recorded.

In the parameter recognition information table 761 of the disc information structure # 6 760, recording speed = " 2 ", recording layer = " 2 ", and WS identification information = " 3 " Information contained in the parameter recognition information table 761, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (2, 2, 3) is recorded.

In the parameter recognition information table 771 of the disk information structure # 7 770, the recording speed = "4", the recording layer = "1", and the WS identification information = "3" are recorded. In the parameter table 772, the above information is recorded. Information contained in the parameter recognition information table 771, that is, recording-related parameter information about (recording speed, recording layer, WS identification information) = (4, 1, 3) is recorded.

In the parameter recognition information table 781 of the disc information structure # 8 780, the recording speed = "4", the recording layer = "2", and the WS identification information = "3" are recorded. In the parameter table 782, the above information is recorded. Information contained in the parameter recognition information table 781, that is, recording related parameter information about (recording speed, recording layer, WS identification information) = (4, 2, 3), is recorded.

In general, a new write strategy is required by the addition of a new double speed. According to the present invention as described above, the disc information structure is defined and written on the medium, thereby ensuring compatibility between the standards.

For example, when the rewritable information storage medium 430 created by the third standard is loaded into the drive system 421 supporting the second standard, the drive system 421 is stored in the disc information area of the rewritable information storage medium 430. Disc information structures corresponding to the second standard of the recorded disc information structures can be obtained quickly and interchangeably from the parameter information recognition table. That is, when a rewritable information storage medium 430 is loaded in the drive system 421, if the drive system 421 tries to write to the first recording layer of the medium 430 at twice the recording speed, the drive system 421 ) Denotes a disc information structure in which the value of the parameter recognition information table among the disc information structures of the disc information area of the medium 430 indicates (recording speed, recording layer, WS identification information) = (2, 1, 2). The recording can be performed by referring to the recording related parameters in the parameter table of this disc information structure. The reason for finding the disk information structure with WS identification information = "2" is that WS B is the only write strategy that can be doubled in drive systems that support the second specification. And, in this example, the representative number referring to WS B is only "2".

By operating the disk information structure in this way, compatibility with other media as well as scalability can be guaranteed, so that it is possible to cope with the future increase of the number of recording layers, diversification of the recording speed, and the emergence of various types of write strategies. Has the advantage. By making such a rule, uniformity and compatibility can be achieved between the standard between the rewritable information storage medium and the once-recorded information storage medium.

A plurality of disc information structures as described above are recorded in the disc information area of the disc, and these disc information structures are recorded beforehand when the medium is manufactured. For example, it may be recorded in a pre-recorded area of the lead-in area as shown in FIG. However, this is merely an example, and any area can be used as long as it can contain a disc information structure in a future disc.

In addition, the description of the disc information structure as referred to above refers to the logical structure of the disc information structure, but not to limit the physical structure. That is, the present invention is not limited to the fact that the disc information structure is divided into a common information table, a parameter recognition information table, and a physical area of the parameter table. The information stored in the disc information structure is logically stored as in the example according to the present invention. It means you can distinguish.

Now, an example of an apparatus for recording and reproducing data on a disc on which a disc information structure according to the present invention is recorded will be described with reference to FIG.

8 shows an example of a recording / reproducing apparatus according to the present invention.

Referring to FIG. 8, 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 disc 100, which is an optical record information storage medium on which the disc information structure according to the present invention is recorded, and reads the data recorded on the disc 100. .

The control unit 1 controls the recording / reading unit 2 to record and read data on the disc 100 according to a predetermined file system. In particular, the control unit 1 according to the present invention reads out a plurality of disc information structures stored from the disc 100 when the disc 100 is loaded, and obtains a disc information structure suitable for this recording / reproducing apparatus from the disc information structures. It locates and controls the data to be written to or read from the disc 100 using the parameters of the found disc information structure.

The control unit 1 includes a system controller 10, a host 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 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 disk 100. 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, the system controller 10 according to the present invention reads out a plurality of disc information structures recorded on the disc 100 and finds a disc information structure suitable for this recording / reproducing apparatus from the parameter recognition information table of these disc information structures. . For example, the system controller 10 searches for the recording speed, the recording layer, the WS identification information recorded in the parameter recognition information tables, and the WS of the recording speed, the layer to be recorded, and the recording strategy that it can support. Finding the parameter recognition information table containing the same information as the identification information, and setting the respective components of the control unit 1 by referring to the recording related parameters contained in the parameter table of the disc information structure containing the parameter recognition information table. Control to record data on the disc 100 accordingly.

In reproduction, the host I / F 20 receives a reproduction command from the host. The system controller 10 performs initialization necessary for regeneration. The recording / reading unit 2 outputs an optical signal obtained by irradiating a laser beam to the disk 100 and receiving a laser beam reflected from the disk 100. 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, the system controller 10 according to the present invention reads out a plurality of disc information structures recorded on the disc 100 and finds a disc information structure suitable for this recording / reproducing apparatus from the parameter recognition information table of these disc information structures. . Although the recording related parameters are mainly described with reference to FIGS. 3 to 7, in the case where there are a plurality of playback related parameters in data reproduction, the recording related parameters may be applied to the playback related parameters similarly to the recorded disc information structure. . For example, the system controller 10 searches for the reproduction-related identification information recorded in the parameter recognition information tables, finds a parameter recognition information table containing information suitable for its playback characteristics, and the parameter recognition information table is By referring to the reproduction-related parameters included in the parameter table of the disc information structure contained therein, it is possible to control to set the respective components of the controller 1 so that the data recorded on the disc 100 can be controlled accordingly.

The recording / reproducing apparatus shown in Fig. 8 may be implemented as a separate recording apparatus, a reproducing apparatus, or may be implemented as one recording and reproducing apparatus.

9 is a flowchart illustrating a process of a recording / reproducing method according to the present invention.

First, a disk is loaded into a drive system (910).

The system controller 10 of the drive system determines 920 a recording environment suitable for this drive system. For example, it is possible to determine what recording speed the drive system supports, on which recording layer the disc is going to be written to, what recording strategies the drive system supports. Of course, deciding here means simply reading these values in the internal memory of this drive system.

The system controller 10 then finds (930) the disc information structure corresponding to the determined recording environment from the parameter recognition information table in the disc information area of the disc. That is, the system controller 10 reads the disc information structures recorded in the disc information area of the disc, and contains information such as the determined recording environment, that is, the recording layer, the recording speed, and the WS identification information, from the disc information structures. Find the parameter recognition information table.

Next, the system controller 10 reads recording related parameter information from the parameter table of the disk information structure to which the found parameter recognition information table belongs (940).

The system controller 10 controls the drive system to set the drive system with reference to the parameter information read as described above and to write data to the disc in the setting state (950).

The above-described recording method or reproducing method 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 as described above, by configuring a logical parameter recognition information table including a recording speed, a recording layer, and WS identification information in the disc information structure, each medium in one or more disc information structures is recorded. It is possible to quickly know from the parameter recognition information table in the disc information structure the recording speed, recording layer and the recording strategy to which the recording related parameters in the parameter table in the disc information structure apply.

In addition, even in the future disc standard, even with the addition of a recording speed, a recording layer, and a WS, such a disc information structure can be extended and guaranteed.

Further, by setting such a rule among standards, for example, compatibility between standards of a recording medium and a rewritable medium can be achieved, for example.

Claims (8)

A recording / reproducing method for recording data on or reading data from an information storage medium having at least one information recording layer, Reading one or more disc information structures from the information storage medium, each disc information structure including information about recording characteristics of the information storage medium and information about recording related parameters corresponding to the recording characteristics; , From the at least one disc information structure, a disc information structure having information relating to a recording characteristic related to a recording / reproducing apparatus is found and the information relating to the recording related parameters corresponding to the recording characteristic included in the disc information structure is referred to. Recording data on the information storage medium. The method of claim 1, And the information on the recording characteristic includes at least one of a recording speed, a recording layer, and recording strategy (WS) identification information. The method of claim 2, And the recording speed and recording layer included in the information on the recording characteristics indicate a recording speed and a recording layer to which recording related parameters in the disc information structure can be applied. The method of claim 2, And WS identification information included in the information about the recording characteristic indicates a recording strategy described by recording related parameters in the disc information structure. The method of claim 2, And the WS identification information included in the information on the recording characteristics indicates a combination of a predetermined recording strategy and other functions not related to the recording strategy. The method of claim 1, And the information storage medium is one of a read-only type, a rewritable type, and a write once type. The method of claim 1, The recording step, Finding information about the recording characteristic of the recording / reproducing apparatus from the information about the recording characteristic included in the one or more disc information structures to obtain recording related parameters suitable for the recording / reproducing apparatus. Characterized in that the recording / playback method. The method of claim 1, The recording step Determining recording characteristics suitable for the recording / reproducing apparatus; Finding from the one or more disc information structures a disc information structure comprising information relating to the determined recording characteristic; And recording data on the information storage medium by using the recording related parameters included in the found disk information structure.

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