KR100717069B1 - Information storage medium, method and apparatus for recording and/or reproducing pointing information - Google Patents

Abstract

Disclosed are an information storage medium, a method and an apparatus for recording / reproducing position information.

The disclosed information storage medium includes a disc-related information area having disc-related information for recording or reproducing data on an information storage medium, wherein the disc-related information includes common disc-related information and changeable parameters. And the disc related information area is arranged according to the information on the changeable parameter information.

Description

Information storage medium, method and apparatus for recording and reproducing location information, and a device therefor {Information storage medium, method and apparatus for recording and / or reproducing pointing information}

1A shows a layout of a conventional recordable information storage medium.

1B shows a layout of a conventional read-only information storage medium.

2 shows general recording related parameters with a recording pulse pattern.

3A to 3F show examples in which conventional disc related information is recorded.

4 shows an example in which disk related information is recorded on an information storage medium according to the present invention.

5 is a diagram of a sequence pair of disk related parameters recorded according to an example of a pointing function recorded on an information storage medium according to the present invention.

6 is a flowchart for explaining a method of recording and / or reproducing location information on an information storage medium according to the present invention.

7 is a block diagram of an apparatus for recording / reproducing position information on an information storage medium according to the present invention.

8 is a block diagram of a disk drive in which the apparatus of FIG. 7 is implemented.

The present invention relates to an information storage medium, a method and a device for recording / reproducing position information. More particularly, the present invention relates to recording of information that can be changed in the future and information on position information of the information as a pointing function. An information storage medium, and a method and apparatus for recording / reproducing position information.

In general, an optical disk is widely used as an information recording medium of an optical pickup device for recording / reproducing information in a non-contact manner, and is classified into a compact disk (CD) and a digital versatile disk (DVD) according to the information recording capacity. do. 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.

FIG. 1A shows a layout of a recordable information storage medium, and FIG. 1B shows a layout of a read-only information storage medium. In general, an information storage medium includes a lead-in area, a data zone, a lead-out area, and disc related information and the like are recorded in the lead-in area. Here, the disc-related information may be recorded in pits or wobbles on a recordable information storage medium, and in pits on a read-only information storage medium. In addition, a defect management area (DMA), a buffer, an Optimal Power Control (OPC) test zone, a reserved area, and the like may be further provided.

As the disc related information, for example, a disc type, a version number, a disc size, a disc type, the number of information storage layers, and the like are recorded. In addition, recording strategy information such as recording speed information, recording power or reproduction power Etc. are recorded. As parameters related to the recording strategy, as shown in Fig. 2, the pulse period Ttop at the start of recording, the pulse period Tmp at the middle of recording, the pulse period Tcl at the end of recording, the recording power Pw, Erase power Pe, bias power Pb, and the like.

A conventional information storage medium records information that changes each time a part of the disc related information changes, as shown in FIGS. 3A to 3F. By the way, among the disc related information, there is information common to each disc, and there is information which changes. The changed information includes, for example, the number of information storage layers, the recording speed information, the recording strategy information, and the like. Such changed information is recorded together with common information in different areas.

When the information storage medium is mounted in the drive, the drive reads all of the disk related information as described above, finds a condition suitable for the drive, and writes data to the information storage medium or reads the information recorded in the storage medium. However, as the amount of information gradually increases, the time required for the drive to read all the information gradually increases, resulting in a delay in the start time of recording / reproducing data.

Further, the disc related information can be recorded in various ways depending on the standard of the information storage medium. For example, reproduction-only information may be recorded in the form of a pit or, in particular, in the case of a recordable medium, may be recorded by wobbling of the groove. At this time, the reproduction channel of the data may be different from the SUM channel and the differential channel. Here, when data is recorded by groove wobbling, since the physical length representing a certain bit is longer than that when the data is recorded by the pit, even if the same information is read, more information is read when the data recorded by groove wobbling is read. Should read Therefore, the larger the amount of information, the longer the time for reading the disc information according to the data recording method. This leads to the disadvantage of having to wait a lot of time to actually record or reproduce the user data.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and when the changed disk related information is recorded, the disk related information can be effectively and quickly included, including a pointing function that can efficiently indicate the position information of the information. It is an object of the present invention to provide a readable information storage medium and a method and apparatus for recording / reproducing location information.

In addition, a method for recording / reproducing the location information and the location information uniformly provided with a pointing function for the location information of the disc-related information to ensure compatibility with other information storage media and expandability to other information storage media. And to provide a device.

In order to achieve the above object, an information storage medium according to the present invention comprises a disc-related information area having disc-related information for recording or reproducing data on an information storage medium. The information includes common disc related information and changeable parameter information, and the disc related information area is arranged according to the information on the changeable parameter information.

The common disc related information includes at least one of a storage medium type, information on an information storage layer, and a recording speed range.

The changeable parameter information is at least one of speed information, recording strategy related information, information storage layer information, version number information, and recording related information.

The changeable parameter information may include recording speed information, information storage layer information, and recording strategy information.

The disc related information areas are arranged in increasing order of recording speed, in increasing order of information storage layer, and according to the recording strategy priority.

In order to achieve the above object, in the information storage medium according to the present invention, each area of the disc related information provides a corresponding recording speed, an information storage layer and a recording strategy information set, and a corresponding recording speed, information storage layer and a recording strip. And the retirement information set includes pointing information indicating an area of the disc related information stored therein.

The disc related information area provides a corresponding recording speed, information storage layer and a set of recording strategy information, wherein the disc related information area is in accordance with a specific rule indicated by the recording speed, information storage layer and recording strategy information set. It is characterized in that the arrangement.

The information storage layer is characterized in that the optical disk.

In order to achieve the above object, an information storage medium comprising a disc-related information area having disc-related information for recording or reproducing data on an information storage medium, wherein the disc-related information includes common disc-related information and a recording speed. Changeable information including information, information storage layer information, and recording strategy information, wherein the disc related information area has the same recording speed in order of increasing recording speed within a sequence of areas having the same recording speed. And in the order of increasing the information storage layer within each order of the area having the storage layer, and in order of the priority of the recording strategy.

In order to achieve the above object, an information storage medium comprising a disc-related information area having disc-related information for recording or reproducing data on an information storage medium,

The disc related information includes common disc related information and changeable information including recording speed information, information storage layer information, and recording strategy information, and each disc related information area includes a corresponding recording speed, information storage layer and Providing a set of write strategy information.

In order to achieve the above object, an information storage medium according to the present invention comprises: a common information table in which common disc related information is recorded; And a parameter table in which changeable parameter information corresponding to recording and / or reproduction characteristics is recorded, and the pointing information indicating an area including the changeable parameter information is recorded in a common information table.

The pointing information may be recorded as a pointing function indicating a specific rule in which changeable parameter information is expressed in ordered pairs.

The arrangement of the ordered pairs is characterized in that they are made in the order of the corresponding recording strategy in the order of increasing from the low recording speed, in order of increasing from the low information storage layer.

In the pointing information, an information part corresponding to a reference parameter and an information part corresponding to a general parameter applied to the reference parameter are recorded in increasing or decreasing order of the number of layers of the information storage layer, and the number of general parameter parts increases or decreases. Or in order of increasing or decreasing the characteristic information or the numerical order of the characteristic information or the reference parameter information part.

The reference parameter is recording speed information, and the general parameter is recording strategy information.

In order to achieve the above object, in a method for recording data in an information storage medium,

Recording disc related information including common disc related information and changeable parameter information in the disc related information area, wherein recording of the changeable parameter information includes a parameter that can be changed according to a specific rule in which the disc related information is arranged; And recording the information.

In order to achieve the above object, in a method of recording data on an information storage medium,

Recording the disc related information in the disc related information area, wherein the disc related information includes common disc related information and changeable information including recording speed information, information storage layer information, and recording strategy information, The recording of the changeable parameter information is characterized by recording the disc related information area, the corresponding recording speed, the information storage layer and the recording strategy information set.

And recording the pointing information for the disc-related information area indicating the disc-related information area in which the corresponding recording speed, information storage layer and recording strategy information set are recorded.

In order to achieve the above object, a method of recording information in an information storage medium,

Recording common disk related information in a common information table; Recording changeable parameter information corresponding to recording and / or reproduction characteristics in the parameter table; And recording pointing information indicating an area of an information storage medium including changeable parameter information.

In order to achieve the above object, a method of recording or reproducing data from an information storage medium,

Reproducing the disc related information including the common disc related information and the changeable parameter information from the disc related information area arranged according to the information on the changeable parameter information; Recording the data according to the disc related information or reproducing the data in consideration of the common disc related information.

In order to achieve the above object, in the method according to the present invention, the changeable parameter information includes recording speed information, information storage layer information, and recording strategy information, wherein the disc-related information area of the area having the same recording speed. In order of increasing recording speed within the order, in order of increasing information storage layer within each order of regions having the same recording speed and storage layer, and in order of priority of recording strategy. It features.

In order to achieve the above object, in a method of accessing data from an information storage medium,

Reproducing the pointing information represented by the pointing function, wherein the pointing information points to an area of the parameter table that includes changeable parameter information according to recording and / or playback characteristics, the pointing information being indicated by the pointing function. Is a specific rule and is a common information table including common disk related information.

In order to achieve the above object, there is provided a method for shortening the time for recording data to or reproducing data from an information storage medium.

The pointing information indicating the area of the information storage medium in which the changeable disk related information sets are stored is recorded as a pointing function, the pointing function indicating a specific rule, and the disk related information set changeable by referring to only a specific rule of the pointing function. Characterized by approaching the desired ones.

In order to achieve the above object, there is provided a method for shortening the time for recording data to or reproducing data from an information storage medium.

And accessing a changeable set of disc related information with reference to only a specific rule of the pointing function, wherein the pointing function relates to pointing information indicating an area of an information storage medium storing the changeable set of disc related information. .

In order to achieve the above object, an apparatus for recording data in an information storage medium,

A recorder for recording data on the information storage medium; And a control unit for controlling the recording unit to record changeable parameter information of the disc related information in the disc related information area according to a specific rule in which the disc related information area is arranged.

In order to achieve the above object, an apparatus for recording data in an information storage medium,

A recorder for recording data on the information storage medium; And a control unit for controlling the recording unit to record the pointing information as a pointing function indicating a specific rule, wherein the pointing information indicates an area of the information storage medium including changeable parameter information corresponding to recording and / or reproduction characteristics. It features.

In order to achieve the above object, an apparatus for reproducing data from an information storage medium,

A reading unit for reproducing data from the information storage medium; And a control unit which controls the reader to read changeable parameter information of the disc related information from the disc related information area, wherein the changeable parameter information is an area of the disc related information according to a specific rule in which the area of the disc related information is arranged. It is characterized in that stored in.

In order to achieve the above object, an apparatus for reproducing data from an information storage medium,

A reading unit for reading data from an information storage medium; And a control unit for controlling the reading unit to read the pointing information having a pointing function indicating a specific rule, wherein the pointing information indicates an area of the information storage medium including changeable parameter information corresponding to recording and / or reproducing characteristics. It is characterized by.

Hereinafter, an information storage medium, a method and an apparatus for recording / reproducing position information according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 4, after the information storage medium is mounted in the drive, the common information about the disc information is recorded in the common information table of the predetermined area so that the disc can be read effectively by the drive, and then the next area. Record the parameter information that changes. In the common information table, a pointing function indicating position information of an area in which such changed information is recorded is recorded. The changed parameter information may be, for example, information changed according to an increase in an information storage layer, a variety of recording speeds, and a variety of recording strategies WS.

 Common information recorded in the common information table includes, for example, the type of storage medium (playback only, write once, record repeatedly), the number of information storage layers, the recording speed range, and the like. The recording speed range can be represented by the lowest recording speed and the highest recording speed, and the number of recording speeds can also be recorded.

The changed parameter information includes, for example, recording speed information, the number of information storage layers, and recording strategy information. Such changed parameter information may vary from disc to disc, and may be continuously changed in accordance with an increase in information storage layer, diversification of recording speed, and diversification of recording strategy.

Such changed information is recorded, for example, in a predetermined area of the disc related information area, and the positional information of the area where these information is recorded is recorded as a pointing function according to a predetermined rule. The pointing function may consist of a plurality of factors, and the pointing function may vary according to a reference parameter among the plurality of factors.

Specifically, the plurality of factors included in the pointing function may be a recording speed, a recording strategy, and an information storage layer.

For example, the case where the recording speed becomes a reference parameter will be described. If the writing speed is possible up to 1x-8x, the pointing function depends on the number and order of these writing speeds.

When the recording speed becomes a reference parameter and the recording speed information includes the first to nth recording speeds, the pointing function is as follows.

    First writing speed  Recording strategy information applied to the first recording speed     Second writing speed  Recording strategy information applied to the second recording speed     ...  ...     (n-1) th recording speed  Recording strategy information applied to the (n-1) th recording speed     nth writing speed  Write strategy information applied to the nth write speed

The first recording speed and recording strategy information applied to the first recording speed are arranged in accordance with a predetermined rule, and the second recording speed and recording strategy information applied to the second recording speed are in accordance with the predetermined rule. In accordance with the same rule, the nth recording speed (where n represents a natural number) and the recording strategy information applied to the nth recording speed are recorded. Since the recording speed and the strategy information are recorded for each information storage layer, it is preferable that the recording speed and the strategy information are repeatedly recorded in the order of the information storage layer.

Specifically, in the case where there are four types of recording speed information and four types of recording strategies in the information storage medium, the pointing function may be recorded in four bytes as follows. Here, the number of bytes of the pointing function may vary depending on the number of branches of the reference parameter. That is, when the recording speed is the reference parameter and the recording speed is four, the pointing function can be recorded in four bytes.

   Recording speed information   Record strategy information    Byte number    7th bit ~ 4th bit   3rd bit ~ 0th bit      0        0001      0011      One        0010      0011      2        0100      0100      3        1000      1000

In Table 2, the first recording speed is written in the first byte, the second writing speed is written in the second byte, the third writing speed is written in the third byte, and the fourth writing speed is written in the fourth byte. Indicates in what order the recording strategy information applicable for each recording speed is recorded. For example, the first recording speed is recorded in the fourth bit, the second recording speed is recorded in the fifth bit, the third writing speed is recorded in the sixth bit, and information about the fourth recording speed is recorded in the seventh bit, respectively. Then, the first write strategy WS1 is set in the 0 bit, the second write strategy WS2 is set in the first bit, the third write strategy WS3 is set in the second bit, and the third bit is set. The fourth recording strategy WS4 is recorded respectively.

Here, there may be various methods of recording the recording speed information. For example, the recording speed information can be represented by a possible combination of a plurality of bits. Specifically, in the case of recording the recording speed information by the combination of 4 bits, 0001b indicates 1x speed, 0010b indicates 2x speed, 0011b indicates 3x speed, 0100 indicates 4x speed, and 0101 indicates 5x speed. The combination of the branches indicates the recording speed information. Alternatively, there is a method of determining speed information corresponding to each bit and recording the speed information for each bit. For example, when recording the recording rate information using 4 bits, the first bit rate is used for the first bit, the second write rate is for the second bit, the third write rate for the third bit, and the fourth bit. Denotes fourth recording speeds, respectively.

According to the pointing function according to Table 2, the first and second recording strategies are applicable for the first recording speed, the first and second recording strategies are applicable for the second recording speed, and the third recording. The third write strategy is applicable to the speed, and the fourth write strategy is applicable to the fourth recording speed. The pointing function includes rules for the order or arrangement in which these write speeds and write strategy information are recorded.

In addition, since the recording speed and the recording strategy information are recorded for each information storage layer, the recording speed and the recording strategy information can be preferably recorded in increasing order of information storage layer or decreasing information storage layer.

For example, when the recording speed is four at 1,2,4,8 times and the recording strategy is four at the first to fourth recording strategies WS1, WS2, WS3, and WS4. The number of branches of the pointing function is four depending on the number of reference recording speeds. That is, 4 bytes can be used to represent the four recording speeds as a reference.

The pointing function for the write strategy can be determined in various ways. As one example, four bytes may be written as follows. One byte includes seventh to zeroth bits, and write rate information is recorded in 7-4 bits, and a write strategy applied to the write rate is recorded in 3-0 bits.

When the recording speed recorded in the common information table is 1, 2, 4, 8 times, and the information storage layer of the medium is 4 layers (L0, L1, L2, L3), the positional information indicated by the pointing function is converted into order pairs ( Recording speed, recording strategy, recording layer).

(1x, WS1, L0)-> (1x, WS1, L1)-> (1x, WS1, L2)-> (1x, WS1, L3)->

(1x, WS2, L0)-> (1x, WS2, L1)-> (1x, WS2, L2)-> (1x, WS2, L3)->

(2x, WS1, L0)-> (2x, WS1, L1)-> (2x, WS1, L2)-> (2x, WS1, L3)->

(2x, WS2, L0)-> (2x, WS2, L1)-> (2x, WS2, L2)-> (2x, WS2, L3)->

(4x, WS3, L0)-> (4x, WS3, L1)-> (4x, WS3, L2)-> (4x, WS3, L3)->

(8x, WS4, L0)-> (8x, WS4, L1)-> (8x, WS4, L2)-> (8x, WS4, L3)

The arrangement order of the above-described pairs (recording rate, recording strategy, recording layer) is ascending order of the information storage layer with respect to the predetermined recording rate and the recording strategy applied to the predetermined recording rate (L0-> L1-> L2). -> Shows an example with a rule arranged as L3). That is, the first double speed and the first recording strategy applied for the first double speed are arranged in increasing order of the information storage layer (L0-> L1-> L2-> L3), and the next first double speed and the first Arrange in increasing order of the information storage layer with respect to the second recording strategy applied for double speed, and then write strategy (first and second write strategy) applied for the next second double speed and the second double speed. It can be arranged in such a way that the information storage layer is arranged in increasing order. Therefore, according to this arrangement rule, it is possible to know how many times the desired information exists in the drive.

The arrangement rule of the above-described pointing function is only an example, and even if the amount of information to be changed is increased, the position information on which the changed information is recorded may be represented by the pointing function.

As another example, the case where the recording speed is adopted as the reference parameter will be described as follows. Here, the pointing function information may be recorded as follows.

   Recording speed information     Record strategy information   Byte number    7th bit ... 4th bit   3rd bit ... 0th bit      0        0001         0001      One        0010         0001      2        0100         0010      3        1000         0100

According to Table 3, the first recording strategy W1S information is recorded on the medium at the first speed and the second speed, and the information about the second recording strategy WS2 is recorded at the third speed. At the fourth speed, information on the third recording strategy WS3 is recorded. The pointing function according to a predetermined rule indicates the positional information where the information is recorded.

The disc related information can be recorded in various ways in accordance with the present invention. That is, there may be various rules for recording the disc related information. For example, the predetermined reference parameter and the general variable applied to the predetermined reference parameter are recorded in each information storage layer in the order of increasing or decreasing the number of layers of the information storage layer, and in the order of increasing or decreasing the number of reference parameters. Or in accordance with the characteristics of the reference parameter, and in increasing or decreasing order of the number of the general parameters or in accordance with the characteristics of the general parameters. Here, the general variable refers to a variable except the reference parameter and the number of information storage layers. In addition, when the reference parameter is the recording speed, a sequence number can be sent for each recording rate, and the order can be determined according to the increase and decrease of the sequence number. When the reference parameter is information on the recording speed, it is possible to sequence the available recording speeds for each value, and the general parameter applicable to the reference parameter and the reference parameter stores each information in the order of increasing or decreasing the number of layers of the recording speed. Can be recorded in layers.

Specifically, when the recording speed information recorded in the common information table is 1, 2, 4, 6 times, and the information storage layer is 4 layers (L0, L1, L2, L3) according to the pointing function shown in Table 3 above. The position information is represented by ordered pairs (recording speed, recording strategy, recording layer) as follows. Here, it is assumed that the predetermined recording speed and the recording strategy applied to the predetermined recording speed are recorded in increasing order of the information storage layer.

(1x, WS1, L0)-> (1x, WS1, L1)-> (1x, WS1, L2)-> (1x, WS1, L3)->

(2x, WS1, L0)-> (2x, WS1, L1)-> (2x, WS1, L2)-> (2x, WS1, L3)->

(3x, WS2, L0)-> (3x, WS2, L1)-> (3x, WS2, L2)-> (3x, WS2, L3)->

(6x, WS3, L0)-> (6x, WS3, L1)-> (6x, WS3, L2)-> (6x, WS3, L3)

As described above, the pointing function according to the present invention indicates an order or a position in which each information storage layer, each double speed, and parameter information for each recording strategy are recorded on the information storage medium. That is, the pointing function may include a rule indicating the parameter information in ordered pairs. In the above example, each parameter information array is arranged from the low-level information storage layer to the high-level information storage layer, from the first recording strategy WS1 to the fourth recording strategy WS4, and from low to high speed. It's based on the rule. In this way, a rule for a pointing function that is unified and compatible with other information storage media can be presented, and the compatibility and scalability of the information can be guaranteed in the future by pointing the arrangement order of the information recorded in the information storage media according to the rule.

Next, when recording strategy information is adopted as a reference parameter, the recording strategy information becomes one of recording strategies supported by the information storage medium, and the recording speed information is stored in the recording strategy. Applicable or applied recording speeds. When the recording strategy information becomes a reference parameter, the pointing function can be expressed as follows.

  First writing strategy WS1    Recording speed information to which the first recording strategy is applied   Second recording strategy (WS2)    Recording speed information to which the second recording strategy is applied   ...    ...   (m-1) recording strategy (WS (m-1))    (m-1) Recording speed information to which recording strategy is applied    m Recording strategy (WSm)     m Recording speed information to which recording strategy is applied

According to Table 4, the recording strategy becomes a reference parameter, and the order of recording the recording strategy and the recording speed information applied for each recording strategy can be determined in the order of the information storage layer. For example, the information storage medium includes first to fourth recording strategies WS1, WS2, WS3, WS4, and the first and second recording speeds in the first recording strategy WS1. (RV1) (RV2) is applied, the second and third recording speeds RV2 (RV3) are applied to the second recording strategy WS2, and the third recording is performed on the third recording strategy WS3. When the speed RV3 is applied and the fourth recording speed RV4 is applied to the fourth recording strategy WS4, the number of indexes arranged in the order of the information storage layer with respect to the recording strategy and the recording speed. Is shown in FIG. 5 in a tree diagram . Herein, it is assumed that the information storage layer includes the first to fourth information storage layers L0, L1, L2, and L3.

When the recording strategy is used as a reference parameter, referring to FIG. 5, positional information according to the pointing function is represented by an ordered pair (recording strategy, recording speed, recording layer) as follows.

(WS1, RV1, L0)-> (WS1, RV1, L1)-> (WS1, RV1, L2)-> (WS1, RV1, L3)->

(WS1, RV2, L0)-> (WS1, RV2, L1)-> (WS1, RV2, L2)-> (WS1, RV2, L3)->

(WS2, RV2, L0)-> (WS2, RV2, L1)-> (WS2, RV2, L2)-> (WS2, RV2, L3)->

(WS2, RV3, L0)-> (WS2, RV3, L1)-> (WS2, RV3, L2)-> (WS2, RV3, L3)->

(WS3, RV3, L0)-> (WS3, RV3, L1)-> (WS3, RV3, L2)-> (WS3, RV3, L3)->

(WS4, RV4, L0)-> (WS4, RV4, L1)-> (WS4, RV4, L2)-> (WS4, RV4, L3)

Specifically, when there are eight information storage layers, four recording speed information, and two recording strategies, the number of ordered pairs derivable from these information is 8 x 4 x 2 = 64. When all 64 pieces of information are recorded, 64 pointers are required if the location information of the area where these pieces of information are recorded is recorded separately. However, if position information is represented as a pointing function according to a predetermined rule as in the present invention, position information in all cases can be effectively recorded with only a few bytes.

As described above, the disc related information can be recorded in various ways. In particular, in accordance with the present invention, the changeable parameter information is provided to indicate a particular rule that results in a disc related information unit having a corresponding order in the information storage medium. The area of the disc related information is arranged in accordance with the information on the changeable parameter information.

For example, the disc-related information area is arranged in accordance with the information about the reference parameter, for example, the order in which the number of reference parameters increases or decreases, or the characteristics of the reference parameter, and the information for the information storage layer, for example, The increasing sequence diagram of the information storage layer may be arranged according to the information on the decreasing order, and the general variable applicable to the reference parameter, for example, the increasing sequence diagram of the general variable.

Accordingly, an information storage medium according to another embodiment of the present invention includes an area of disk related information arranged according to a reference parameter, an information storage layer, and a general parameter. More specifically, for example, the reference parameter is a recording speed, a plurality of recording speed information applicable, the information storage medium includes a plurality of recording layers, and various recording strategies are applicable. The information storage medium includes a plurality of recording layers, and various recording strategies are applicable, and specific rules can be expressed by (recording speed, information storage layer, preferential recording strategy WSp). That is, the disc related information areas can be arranged in order of increasing recording speed, in increasing order of the number of layers of the information storage layer, and in order of priority of the recording strategy.

According to the present invention, the disc related information area has a recording speed (1X, 2X, 3X) within the order of each area having the same recording speed in the order of increasing the number of layers of the information storage layers (L0, L1, L2 ...). ...) are arranged in increasing order, and then in order of areas having the same recording speed and storage layer, in accordance with the priority of the recording strategy. For example, when the information storage medium includes four information storage layers L0, L1, L2 and L3, (1X, L0, WSp1) is provided in the 0 area, and (1X, L0, WSp2) is the first. Provided in the region, (1X, L1, WSp1) is provided in the second region, (1X, L1, WSp2) is provided in the third region, (1X, L2, WSp1) is provided in the fourth region, (1X, L2, WSp2) is provided in the fifth region, (1X, L3, WSp1) is provided in the sixth region, (1X, L3, WSp2) is provided in the seventh region, and (2X, L0, WSp1) may be provided in the eighth region.

According to the present invention, pointing information indicating the position of changeable parameter information with respect to the disc related information area can be provided in each disc related information area. For example, each disc related information includes common disc related information and applicable changeable parameter information, for example, corresponding recording speed, information storage layer and recording strategy information set, recording speed information, information storage layer Pointing information indicative of the location of the information and recording strategy information sets is provided in each of the disc related information areas.

According to the present invention, the common disk related information and the changeable parameter information may be arranged using one or more tables.

6 is a flowchart for explaining a method of recording and / or reproducing position information according to the present invention.

In the information storage medium according to the present invention, information common to a disc is recorded in a common information table in a predetermined area, for example, a disc related information area, and information having different recording characteristics or changed information is stored in the common information table. It is recorded in tables and other parameter information tables. In addition, a pointing function including position information of an area in which the parameter information is recorded is recorded in a common information table. The pointing function records the position information of the information according to a predetermined rule so that the information included in the pointing function can be read and the position at which the necessary information is recorded can be quickly known.

In the method of recording and / or reproducing data on the information storage medium according to the present invention, when the disc is loaded (11), the disc-related information is read from the common information table (12) and the position information in which the necessary parameters are recorded from the pointing function is read. (14). Next, data is recorded or reproduced on the disc according to the parameter recorded at the corresponding position according to the position information read out from the pointing function (16).

According to the method of the present invention, when the information storage medium includes an area of disc related information arranged according to changeable parameter information in the disc related information, the disc related information is reproduced, and the data is recorded according to the disc related information reproduced. Or reproduced in consideration of the common disc related information of the disc related information medium.

In addition, a method of accessing data from an information storage medium according to the present invention includes the step of reproducing the pointing information represented by a pointing function, the pointing information being capable of changing parameter information according to recording and / or reproducing characteristics. Pointing to the area of the parameter table to be included, the pointing information is a specific rule represented by the pointing function and is preferably a common information table including common disk related information.

In addition, a method of shortening the time for recording data on or reproducing data from the information storage medium includes recording, using a pointing function, pointing information indicating an area of the information storage medium in which changeable disc related information sets are stored. The pointing function represents a specific rule and is intended to access a desired set of disc-related information that can be changed by referring only to the specific rule of the pointing function.

A method of shortening the time for recording data or reproducing data from an information storage medium, the method comprising: accessing a changeable set of disc-related information with reference to only a specific rule of a pointing function; The function is characterized in that it relates to pointing information indicative of an area of an information storage medium storing a changeable set of disc related information.

7 is a block diagram of an apparatus for recording or reproducing position information according to the present invention. The apparatus according to the invention comprises a recording / reading section 1 and a control section 2. The recording / reading unit 91 records data on the disk 30, which is an information storage medium according to an embodiment of the present invention, and reads the recorded data. The control unit 2 controls the recording / reading unit 1 to record the position information of the area where the disc related information is recorded on the disc 30 or read the position information recorded on the disc 30 according to the present invention. The parameter information recorded at that position is reproduced. Data is recorded or reproduced on the disc 30 in accordance with the reproduced information.

8 is a block diagram of a disk drive in which the apparatus of FIG. 7 is implemented.

Referring to Fig. 8, the disc drive includes a pickup 10 as the recording / reading section 1. The disk 30 is mounted to the pickup 10. The disk drive also includes a PC I / F 21, a DSP 22, an RF AMP 23, a SERVO 24, and a SYSTEM CONTROLLER 25 as the control unit 2.

In recording, the PC I / F 21 receives a recording command from the host (not shown) along with data to be recorded. The system controller 25 performs initialization required for recording. That is, information necessary for initialization, such as disk information stored in the lead-in area, is read out, and then recording is prepared based on this information. The DSP 22 performs ECC encoding by adding additional data such as parity for error correction of the data to be recorded received through the PC I / F 21, and modulates the ECC encoded data in a predetermined manner. The RF AMP 23 converts the data output from the DSP 22 into an RF signal. The pickup 10 records the RF signal output from the RF AMP 23 on the disk 30. The servo 24 receives a command required for servo control from a system controller 25 and performs servo control of the pickup 10. If the reproduction speed information is not recorded in advance in the disc 30, the system controller 25 stores the reproduction speed information according to the present invention at the time when recording starts, during recording, or after recording is completed. Command the pickup 10 to write in a predetermined area.

At the time of reproduction, the PC I / F 21 receives a reproduction command from a host (not shown). The system controller 25 performs initialization required for reproduction. At this time, the system controller 25 reads out the reproduction speed information recorded on the disc 30 according to the present invention, and performs the reproduction at the reproduction speed accordingly. The pickup 10 outputs an optical signal obtained by irradiating a laser beam to the disk 30 and receiving a laser beam reflected from the disk 30. The RF AMP 23 converts the optical signal output from the pickup 10 into an RF signal and provides modulated data obtained from the RF signal to the DSP 22, while providing a servo signal for control obtained from the RF signal. To provide. The DSP 22 demodulates the modulated data and outputs the data obtained through ECC error correction. Meanwhile, the servo 24 receives servo signals received from the RF AMP 23 and commands required for servo control received from the system controller 25 to perform servo control on the pickup 10. The PC I / F 21 sends data received from the DSP 22 to the host.

As described above, even if the amount of information to be changed is increased by recording a pointing function in the common information table of the area where the disc related information is recorded, the position information of the area where the changed information is recorded by using a predetermined rule. Information can be recorded.

According to the present invention, the position information of the area in which the changed disk related information is recorded is recorded by the pointing function according to a predetermined rule, so that the position information can be efficiently recorded even if the amount of changed information is increased. Therefore, the necessary information can be read quickly and accurately by the positional information according to this pointing function, thereby reducing the recording / reproducing time.

Furthermore, compatibility and extensibility can be ensured by uniformly defining a pointing function including location information according to a predetermined rule to other types of information storage media.

Claims (14)

 A method of recording data on an information storage medium, Disposing a disc related information area according to a rule represented by a set of recording speed information, an information storage layer and a recording strategy information; Recording disc related information in the disc related information area, wherein the disc related information includes common disc related information and changeable information including recording speed information, information storage layer information and recording strategy information. The recording method characterized by the above-mentioned. The method of claim 1, And the recording of the changeable parameter information includes recording a disc related information area, a corresponding recording speed, an information storage layer, and a recording strategy information set. The method of claim 2, And recording pointing information for a disc-related information area representing a disc-related information area in which the corresponding recording speed, information storage layer, and recording strategy information set are recorded. In a method for recording information on an information storage medium, Recording common disk related information in a common information table; Recording changeable parameter information corresponding to recording and / or reproduction characteristics in the parameter table; Recording the pointing information indicative of an area of the information storage medium comprising changeable parameter information. The method of claim 4, wherein The common disc related information includes at least one of a storage medium type, information on an information storage layer, and a recording speed range. The method according to claim 4 or 5, The changeable parameter information is at least one of speed information, write strategy related information, information storage layer information, version number information and record related information. The method according to claim 4 or 5, And recording the pointing information with a pointing function indicating a specific rule in which the changeable parameter information is represented by an ordered pair. The method according to claim 4 or 5, In the pointing information, an information part corresponding to a reference parameter and an information part corresponding to a general parameter applied to the reference parameter are recorded in increasing or decreasing order of the number of layers of the information storage layer, and the number of general parameter parts increases or decreases. Increasing or decreasing the order of the characteristic information or the characteristic information or the numerical order of the portion of the reference parameter information. A method of recording or reproducing data from an information storage medium, Reproducing the disc related information including the common disc related information and the changeable parameter information from the disc related information area arranged according to the information on the changeable parameter information; Recording the data according to the disc related information or reproducing the data in consideration of the common disc related information. The method of claim 9, The changeable parameter information includes recording speed information, information storage layer information, and recording strategy information, wherein the disc related information area is the same in order of increasing recording speed within the order of areas having the same recording speed. And the order in which the information storage layer increases in each order of the area having the recording speed and the storage layer, and in order of the priority of the recording strategy. In a method of accessing data from an information storage medium, Reproducing the pointing information represented by the pointing function, wherein the pointing information points to an area of the parameter table that includes changeable parameter information according to recording and / or playback characteristics, the pointing information being indicated by the pointing function. Is a common information table that includes a specific rule and common disk related information. A method for shortening the time for recording data on or reproducing data from an information storage medium, the method comprising: The pointing information indicating the area of the information storage medium in which the changeable disk related information sets are stored is recorded as a pointing function, the pointing function indicating a specific rule, and the disk related information set changeable by referring to only a specific rule of the pointing function. Method of accessing the desired one. A method for shortening the time for recording data on or reproducing data from an information storage medium, the method comprising: And accessing a changeable set of disc related information with reference only to a specific rule of the pointing function, wherein the pointing function relates to pointing information indicating an area of an information storage medium storing the changeable set of disc related information. Way. The method of claim 13, And wherein said changeable set of disc related information includes speed information, information storage layer information and write strategy information.

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