HK1083559B - Method of recording information on and/or reproducing information from an optical information storage medium - Google Patents

Description

Method of recording and/or reproducing information on optical information storage medium

Technical Field

The present invention relates to an optical information storage medium and a method of recording and/or reproducing information on and/or from the optical information storage medium, and more particularly, to an optical information storage medium having data recorded everywhere as pits thereon, and a first recording modulation method used in a portion of a lead-in area of the optical information storage medium is different from a second recording modulation method used in a remaining area, and a method of recording and/or reproducing information on and/or from the optical information storage medium.

Background

An optical disc is generally used as an information storage medium for an optical pickup apparatus that records and/or reproduces information on and/or from the optical disc in a non-contact manner. Optical discs are classified into Compact Discs (CDs) or Digital Versatile Discs (DVDs) according to their recording capacities. CDs and DVDs also include 650MB of CD-R, CD-RW, 4.7GB of DVD + RW, DVD-random access memory (DVD-RAM), DVD-R/rewritable (DVD-RW), and the like. The read-only disk includes 650MB of CD, 4.7GB of DVD-ROM, and the like. In addition, a high-density digital versatile disc (HD-DVD) having a recording capacity of 20GB or more has been developed.

However, the above-described optical information medium is standardized according to its type to be compatibly used in a reproducing apparatus. Therefore, the user can conveniently use the optical information medium, and the cost for purchasing the optical information medium is reduced. Attempts to standardize new storage media that have not been standardized have been made. In particular, the format of the new storage medium must be developed so that the new storage medium is compatible or consistent with the existing storage medium. However, the existing storage medium uses a method of recording data as pits or groove wobbles. Here, the pits are indentations physically formed in the substrate when the disc is manufactured, and the groove wobbles are grooves formed in a wave shape. In addition, a pit signal is detected as a jitter value, and a groove wobble signal is detected as a push-pull signal.

Fig. 1 is a graph of push-pull signal and jitter versus depth of groove wobbles or pits. The depth of the groove wobble on which the push-pull signal is output to be the highest is about 1/8(λ/n). Here, λ denotes a wavelength of light emitted from a light source used in the optical pickup device, and n denotes a refractive index of the optical information medium. The maximum depth of the pit on which the wobbling occurs is 1/4(λ/n). In an optical information storage medium having both groove wobbles and pits, the depth of the groove wobbles may be different from the depth of the pits in consideration of characteristics of a push-pull signal and jitter. However, in the case where the depth of the groove wobbles is different from the depth of the pits, separate processes of forming the groove wobbles and the pits are required. Therefore, the process of manufacturing the optical information storage medium becomes complicated. As a result, it is difficult to mass-produce the optical information storage medium. In addition, if the depth of the groove wobbles is the same as the depth of the pits to simplify the process of manufacturing the optical information storage medium, the characteristics of one or both of the push-pull signal and the jitter deteriorate and recording/reproducing data becomes inefficient.

Disclosure of Invention

The present invention provides an optical information storage medium that can be manufactured through a simple process, produces good signal characteristics, and is consistent with different types of optical storage media.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

According to an aspect of the present invention, an optical information storage medium includes a lead-in area, a user data area, and a lead-out area in which data is recorded. Data that is not modified depending on storage media complying with the same physical format is recorded in the entire lead-in area or a portion of the lead-in area, and a first data recording modulation method used in the entire lead-in area or the portion of the lead-in area is different from a second data recording modulation method used in the remaining area of the optical information storage medium.

The entire lead-in area or a portion of the lead-in area in which data that is not modified depending on storage media conforming to the same physical format is recorded may be an area in which optical information storage medium-related information is recorded.

The first recording modulation method for data that is not modified on storage media conforming to the same physical format may be a bi-phase modulation method, and the second recording modulation method for the remaining data may be an RLL modulation method.

The RLL modulation method may be an RLL (1, 7) modulation method.

The sync pattern (pattern) used in the RLL (1, 7) modulation method includes at least one of pits and spaces having a length of 9T or more.

The data recorded according to the bi-phase modulation method includes marks of nT and 2nT lengths and spaces of nT and 2nT lengths, where n is in the range of 2 ≦ n ≦ 4.

The optical information storage medium may further include identification marks recorded with a pattern in which pits and spaces having a length of 9T or more are repeated at least once or more.

The synchronization pattern used in the RLL modulation method may include at least one of pits and spaces having a length of 12T or more.

The data recorded according to the bi-phase modulation method may include marks of nT and 2nT lengths and spaces of nT and 2nT lengths. Here, n is in the range of 3. ltoreq. n.ltoreq.5.

The sync pattern used in the bi-phase modulation method may include at least one of pits and spaces having a length of 12T or more.

According to another aspect of the present invention, a method of recording information on an optical information storage medium having a lead-in area, a user data area, and a lead-out area, includes: data is recorded everywhere as pits in the lead-in area, the user data area, and the lead-out area. Data that is not modified depending on storage media that comply with the same physical format is recorded in the entire lead-in area or a portion of the lead-in area, and data is recorded in a remaining area of the optical information storage medium according to a first data recording modulation method that is different from a second data recording modulation method for data that is not modified depending on storage media that comply with the same physical format.

According to another aspect of the present invention, a method of reproducing information from an optical information storage medium having a lead-in area, a user data area, and a lead-out area, on which data is recorded everywhere as pits, includes: reproducing first data, which is not modified depending on storage media complying with the same physical format, from the entire lead-in area or a portion of the lead-in area using a PLL circuit; and reproducing second data from a remaining area of the optical information storage medium excluding the entire lead-in area or a portion of the lead-in area using the PLL circuit.

According to another aspect of the present invention, a drive for recording and/or reproducing information on and/or from an optical information storage medium having a lead-in area, a user data area, and a lead-out area, includes: a recording unit to record first data, which is not modified depending on storage media complying with the same physical format, in the entire lead-in area or a portion of the lead-in area according to a first data recording modulation method, and to record second data in a remaining area of the optical information storage medium other than the entire lead-in area or the portion of the lead-in area according to a second data recording modulation method different from the first data recording modulation method.

According to another aspect of the present invention, a drive for recording and/or reproducing information on and/or from an optical information storage medium having a lead-in area, a user data area, and a lead-out area, includes: and a reader for reproducing the first data, which is not modified depending on the storage medium conforming to the same physical format, from the entire lead-in area or a portion of the lead-in area using a PLL circuit, and reproducing the second data from a remaining area of the optical information storage medium except the entire lead-in area or the portion of the lead-in area using the PLL circuit.

Drawings

Fig. 1 is a graph illustrating a variation in push-pull signal and jitter based on the depth of a groove wobble or the depth of a pit in a conventional storage medium;

FIG. 2 is a schematic diagram illustrating a physical structure of a recordable high-density optical information storage medium;

fig. 3 is a view for describing a recording modulation method of a groove wobble;

FIG. 4 is a schematic diagram of a physical structure of an optical information storage medium according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a data structure of the optical information storage medium shown in FIG. 4;

fig. 6A and 6B are views illustrating various examples of a recording mode of the optical information storage medium illustrated in fig. 4;

fig. 7A and 7B are views illustrating an example of address marks recorded in a recording mode of the optical information storage medium shown in fig. 4;

fig. 8 is a block diagram illustrating a drive that reproduces information from the optical information storage medium shown in fig. 4.

Detailed Description

Fig. 2 is a schematic diagram illustrating a physical structure of a recordable high-density optical information storage medium. The recordable high-density optical information storage medium includes a lead-in area 110, a user data area 120, and a lead-out area 130, and has a groove track 123 and a land track 125. Here, the user data may be recorded only in the groove track 123 or in both the groove track 123 and the land track 125.

When read-only data is recorded in the lead-in area 110, wobble signals 105 and 106 having a specific frequency and waveform are sequentially recorded in the sidewalls of the groove tracks 123 and/or the land tracks 125, not in the pits. Here, the laser beam L is irradiated onto the groove track 123 and/or the land track 125 to record data on the groove track 123 and/or the land track 125 or reproduce data from the groove track 123 and/or the land track 125. Specifically, the lead-in area 110 and the lead-out area 130 each include a recordable area in which disc-related data is recorded, and a read-only area. Disc related data is recorded in the form of a high frequency wobble 105, and data in recordable areas of the lead-in area 110 and the lead-out area 130 and data in the user data area 120 are recorded in the form of another frequency wobble 106 that is relatively lower than the high frequency wobble 105. Reference numeral 127 denotes a recording mark formed in the user data area 120.

In the optical information storage medium having the above-described structure, read-only data can be reproduced from the lead-in area 110 using a push-pull channel, and user data can be reproduced from the user data area 120 using a sum channel (sum channel). In addition, data is recorded in the lead-in area 110 according to a bi-phase (bi-phase) modulation method, and user data is recorded according to a Run Length Limit (RLL) modulation method, which will be described later. The bi-phase modulation method refers to a method of recording data depending on whether a signal varies within a predetermined period P. For example, as shown in fig. 3, when the phase of the groove wobble 105 or 106 does not change within a predetermined period P, 0 (or 1) bit data is displayed. When the phase of the groove wobble 105 or 106 is shifted or changed within a predetermined period P, 1 (or 0) bit data is displayed. In other words, the bi-phase modulation method is a method of recording data depending on whether a predetermined signal varies within a predetermined period P, for example, depending on whether the phase of the signal varies within the predetermined period P. Here, modulation of the phase of the groove wobble 105 or 106 has been described, but various patterns may be modulated.

In view of the consistency of the data recording modulation method of the above-described recordable high-density optical information storage medium with another data recording modulation method of a read-only optical information storage medium according to the present invention, the physical data structure of the read-only optical information storage medium may be constructed as follows.

Referring to fig. 4, an optical information storage medium according to an embodiment of the present invention includes: a user data area 13 in which user data is recorded; a lead-in area 10 formed inside the user data area 13; and a lead-out area 15 formed outside the user data area 13. In the lead-in area 10, the user data area 13, and the lead-out area 15, data is recorded as pits 8 and 18. When the optical information storage medium is manufactured, pits 8 and 18 are formed on a substrate. If data is recorded everywhere as pits 8 and 18 on the optical information storage medium, the pits 8 and 18 may be formed in the lead-in area 10 and the user data area 13 without stopping (changing) the process of forming the pits 8 and 18. Accordingly, a process of manufacturing the optical information storage medium may be simplified, and a time required to perform the process may be reduced. In addition, since the optical information storage medium does not have the groove wobbles as shown in fig. 2, the pits 8 and 18 can be formed to an optimal depth. In other words, as described with reference to fig. 4, the pits 8 and 18 may be formed to a depth of 1/4(n/λ) at which jitter is optimal (maximum), for example.

Specifically, as shown in fig. 5, information that is not modified on the storage media complying with the same physical format (modulation method, minimum pit length, track pitch, etc.), such as storage medium-related information, is recorded in all or a portion 10a of the lead-in area 10. For example, information that varies according to the contents of the optical information storage medium, such as information regarding the last address of a portion of the user data area 13 in which data is recorded, may be recorded in the remaining area of the optical information storage medium, i.e., the remaining portion of the lead-in area 10 or the lead-out area 15.

When data is recorded everywhere as pits 8 and 18 on the optical information storage medium, a first data recording modulation method used in all or a portion 10a of the lead-in area 10 is different from a second data recording modulation method used in the remaining area of the optical information storage medium. For example, the bi-phase modulation method may be used throughout the entire lead-in area 10, or only in a portion 10a of the lead-in area 10, while the RLL modulation method is used in the remaining area of the optical information storage medium. Hereinafter, the portion 10a is referred to as a storage medium-related information area.

In the optical information storage medium and the method of recording and/or reproducing information on and/or from the optical information storage medium, data is recorded everywhere on the optical information storage medium as pits 8 and 18, and the data is recorded in the entire lead-in area 10 or only in the storage medium-related information area 10a of the lead-in area 10 according to the bi-phase modulation method and is recorded in the remaining area of the optical information storage medium according to the RLL modulation method.

As shown in fig. 6A, in the bi-phase modulation method, if the phase of a pit is not changed within a predetermined period P, data of a bit of value "0" (or "1") is recorded, and if the phase of a pit is changed within the predetermined period P, data of a bit of value "1" (or "0") is recorded. In other words, if the pit 20 is formed everywhere within the predetermined period P, data of a bit of value "0" (or "1") is recorded, and if the pit 22 and the space (space)24 are formed within the predetermined period P, data of a bit of value "1" (or "0") is recorded. Bi-phase modulated pits, binarized signals, patterns of bi-phase modulated data, and data structures are shown in fig. 6A.

The RLL modulation method indicates how many bits of value "0" exist between two bits of value "1". Here, RLL (d, k) denotes that the minimum and maximum numbers of bits of value "0" between two bits of value "1" are d and k, respectively. For example, in the RLL (1, 7) modulation method, the minimum and maximum numbers of bits of a value "0" between two bits of a value "1" are 1 and 7, respectively. According to the RLL (1, 7) modulation method, when d ═ 1, data 1010101 is recorded, and thus a mark of length 2T is formed between two bits of value "1". In addition, when d is 7, the data 10000000100000001 is recorded, and thus a mark of length 8T is formed between two bits of value "1". Here, T denotes a minimum mark length, i.e., a minimum pit length. Therefore, in the RLL (1, 7) modulation method, data is recorded as marks and spaces having lengths of 2T and 8T. Here, the data recorded according to the bi-phase modulation method includes pits of nT and 2nT lengths and spaces of nT and 2nT lengths. n can be in the range of 2. ltoreq. n.ltoreq.4. For example, if n is 2, the data recorded according to the bi-phase modulation method includes pits of 2T and 4T lengths and spaces of 2T and 4T lengths. If n is 4, the data recorded according to the bi-phase modulation method includes pits of 4T and 8T lengths and spaces of 4T and 8T lengths. Therefore, when n is in the range of 2 ≦ n ≦ 4, all data composed of pits of nT and 2nT lengths and spaces of nT and 2nT lengths are included in the range of the lengths of the marks and spaces formed according to the RLL (1, 7) modulation method.

When the phase of the pit and the space is changed within a period of 2nT during reproducing data from the pit and the space according to the bi-phase modulation method, the pit and the space can be read as data of a bit having a value of "1" (or "0") bit. When the phase of the pit and space is not changed within a period of 2nT, the pit and space can be read as data of a bit having a value of "0" (or "1").

The sync pattern may be recorded before each of the area in which the bi-phase modulation method is used and the area in which the RLL modulation method is used. The sync pattern may include at least one of a pit and a space having a length not included in a range of a maximum pit or space length.

For example, if the RLL (1, 7) modulation method is used in the user data area 13, the synchronization pattern may include at least one of pits and marks having a length of 9T or more and pits and spaces having a length of 9T or less. In the RLL (1, 7) modulation method, the pits and spaces may have lengths in a range of 3T-8T, and the synchronization pattern includes at least one of the pits and spaces having lengths not included in the range of 3T-8T. For example, the sync pattern may include at least one of pits and marks having a length of 9T and pits and spaces having a length of 9T or less.

In addition, the sync pattern used in the bi-phase modulation method may include a pit or a space of a maximum length included in the sync pattern used in the RLL modulation method.

As described above, the periods of the pits and spaces recorded according to the bi-phase modulation method may be included within the range of the periods of the pits and spaces used in the RLL modulation method, and the sync pattern used in the bi-phase modulation method may include the pit or space of the maximum length included in the sync pattern used in the RLL modulation method. As a result, the read-only data pits recorded in the storage medium-related information area 10a of the lead-in area 10 and the data pits recorded in the user data area 13 can be reproduced using the same phase-locked loop (PLL) circuit.

Describing an example of data constructed according to the above-described method, the sync pattern may include at least one of a 9T-long pit and a 9T-long mark and a pit and a space having a length of 9T or less. In addition, if user data is recorded as pits of 3T and 6T lengths and spaces of 3T and 6T lengths, the length of 6T is determined as a standard period. Next, if the phase of the signal is not changed within the 6T period, it may be considered that data of a bit of a value "0" (or "1") is being recorded, and if the phase of the signal is changed within the 6T period, it may be considered that data of a bit of a value "1" (or "0") is being recorded. For example, when a pit of 3T length and an interval of 3T length are included in a 6T period, the phase of the signal changes. Here, the standard period may be changed from 6T to 4T or 8T depending on the reliability or characteristics of the reproduced data. In this case, data is recorded as pits of 2T and 4T lengths and intervals of 2T and 4T lengths, and pits of 4T and 8T lengths and intervals of 4T and 8T lengths, instead of pits of 3T and 6T lengths and intervals of 3T and 6T lengths. However, when the sync pattern includes 9T-long pits or marks and data is recorded as 3T and 6T-long pits and 3T and 6T-long spaces within a standard period of 6T, the reproduction error rate of the data can be reduced. When data is reproduced as pits of 2T and 4T lengths and intervals of 2T and 4T lengths, the pits of 2T and 4T lengths and the intervals of 2T and 4T lengths can be corrected to the pits of 3T length and the intervals of 3T length adjacent thereto to reduce a reproduction error rate. In addition, when data is reproduced as pits of 5T and 7T lengths and intervals of 5T and 7T lengths, the pits of 5T and 7T lengths and the intervals of 5T and 7T lengths can be corrected to pits of 6T lengths and intervals of 6T lengths adjacent thereto to reduce a reproduction error rate. Further, when data is reproduced as pits of 8T and 10T lengths and intervals of 8T and 10T lengths, the pits of 8T and 10T lengths and the intervals of 8T and 10T lengths can be corrected to pits of 9T lengths and intervals of 9T lengths close thereto to reduce a reproduction error rate. Although not shown, as described above, the sync pattern may also be recorded in the user data area 13.

Fig. 6B shows an example of a data structure that is bi-phase modulated. Here, the data structure shown in fig. 6B has the opposite polarity to the data structure shown in fig. 6A.

As shown in fig. 7A, the identification mark may be recorded before and after the storage medium-related information area 10a, so that the storage medium-related information area 10a storing information according to the bi-phase modulation method is identified as being different from the user data area 13. The identification mark may be configured such that a pit and/or a space having the same length as a pit or a space of the maximum length included in the sync pattern used in the RLL (1, 7) modulation method and the bi-phase modulation method is repeated at least once or more.

Fig. 7B illustrates a data structure having a polarity opposite to that of the data structure illustrated in fig. 7A.

An optical information storage medium and a method of recording and/or reproducing information on and/or from the optical information storage medium shown in fig. 7A and 7B will be described.

According to the present embodiment, data is recorded everywhere as pits in the lead-in area 10, the user data area 13, and the lead-out area 15. Here, data is recorded in the lead-in area 10 or the storage medium-related information area 10a of the lead-in area 10 according to a bi-phase modulation method, and is recorded in the remaining area of the optical information storage medium according to an RLL (2, 10) modulation method. The storage medium-related information area 10a is an area in which information that has not been modified on storage media conforming to the same physical format is recorded, and the remaining area refers to the remaining portion of the lead-in area 10, the user data area 13, and/or the lead-out area 15. For example, information that is not modified on storage media that conform to the same physical format is storage media related information.

According to the RLL (2, 10) modulation method, data is recorded as marks, i.e., pits, and spaces having a length in the range of 3T-11T. Here, the data recorded according to the bi-phase modulation method includes pits of nT and 2nT lengths and spaces of nT and 2nT lengths. n can be in the range of 3. ltoreq. n.ltoreq.5. For example, if n is 3, the data recorded according to the bi-phase modulation method includes pits of 3T and 6T lengths and spaces of 3T and 6T lengths. If n is 5, the data recorded according to the bi-phase modulation method includes pits of lengths 5T and 10T and spaces of lengths 5T and 10T. Accordingly, the lengths of the pits and spaces formed according to the bi-phase modulation method are included in the range of the length (3T-11T) of the user data recorded according to the RLL (1, 7) modulation method. As a result, as described above, the data pits recorded in the user data area 13 and the data pits recorded in the lead-in area 10 can be reproduced using the same PLL circuit.

Meanwhile, a sync pattern may be recorded in front of each of the area using the bi-phase modulation method and the area using the RLL (2, 10) modulation method. The sync pattern may include at least one of pits and marks having a length of 12T or more and pits and spaces having a length of 12T or less. For example, the sync pattern may be constructed such that a sequence of pits and spaces having a length of 12T is repeated at least once and user data is recorded at 2nT, i.e., one of 6T, 8T, and 10T, determined as a standard period.

For example, when the length 8T is determined as the standard period, if the phase of the signal is not moved (changed) within the standard period of 8T, data of bits of a value "0" (or "1") is displayed, and if the phase of the signal is moved (changed) within the standard period of 8T, data of bits of a value "1" (or "0") is displayed. Here, when the phase of the signal is not shifted (changed) within the standard period of 8T, the pit or space is formed within the standard period of 8T. In contrast, when the phase of the signal is shifted (changed) within the standard period of 8T, the pit of 4T length and the space of 4T length are formed within the standard period of 8T.

In addition, an identification mark may be recorded in front of and behind an area using the bi-phase modulation method, thereby distinguishing the area from another area in which user data is recorded according to the RLL (2, 10) modulation method. Here, the identification mark may be constituted such that pits and/or spaces having a length of 12T or more are repeated at least once or more, and pits and spaces having a length of 12T or less are recorded.

Fig. 8 is a block diagram of a drive 500 to reproduce information from the optical information storage medium shown in fig. 4. Referring to fig. 8, the drive 500 includes a controller 510, and a recording unit and/or reader 520 that records and/or reproduces data on and/or from an optical information storage medium, such as an optical disc 530.

The optical information storage medium according to the present invention may be applied to a storage medium having one or more information surfaces.

Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in this embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Industrial applicability

As described above, according to the optical information storage medium and the method of recording and/or reproducing data on and/or from the optical information storage medium, pits are formed throughout the entire optical information storage medium. Accordingly, the process of manufacturing the optical information storage medium can be simplified. In addition, the pit may be formed to a depth at which an optimum signal is output. Accordingly, recording and/or reproducing characteristics can be improved. In other words, since pits are reproduced through the same reproduction channel (sum channel), it is not necessary to consider a difference in characteristics of signals caused by grooves or pits.

In addition, a data recording modulation method used in the lead-in area or a portion of the lead-in area and a data recording modulation method used in the user data area may be identical to another recording modulation method used on the recordable optical information storage medium. Accordingly, the recordable optical information storage medium can be consistent with other storage media. Further, a large amount of data can be recorded as compared to when data is recorded as a groove wobble, and read-only data recorded in the lead-in area as well as user data can be reproduced using the same PLL circuit. In addition, since the identification mark can be recorded so that the drive can efficiently access a specific area, the access time of the drive can be reduced.

Claims (23)

1. A method of recording information on an optical information storage medium having a lead-in area, a user data area, and a lead-out area, the method comprising:

recording first data, which is not modified depending on storage media complying with the same physical format, in the entire lead-in area or a portion of the lead-in area according to a first data recording modulation method; and

recording second data in a remaining area of the optical information storage medium excluding the entire lead-in area or a portion of the lead-in area according to a second data recording modulation method different from the first data recording modulation method,

wherein data is recorded everywhere as pits on the optical information storage medium.

2. The method of claim 1, wherein the recording of the first data in the entire lead-in area or a portion of the lead-in area comprises:

first data is recorded in an area in which optical information storage medium-related information is recorded.

3. The method of claim 2, wherein the first data recording modulation method is a bi-phase modulation method, and the second data recording modulation method is an RLL modulation method.

4. The method of claim 3, wherein the RLL modulation method is an RLL (1, 7) modulation method.

5. The method of claim 4, further comprising:

a sync pattern formed in a remaining area using the RLL (1, 7) modulation method and including at least one of pits and spaces having a length of 9T or more is formed.

6. The method of claim 5, wherein the first data recorded according to the bi-phase modulation method comprises:

nT and 2nT length marks and nT and 2nT length spaces, where n is in the range of 2 ≦ n ≦ 4.

7. The method of claim 5, further comprising:

a sync pattern formed in the entire lead-in area or a portion of the lead-in area using the bi-phase modulation method and including at least one of pits and spaces having a length of 9T or more is formed.

8. The method of claim 4, further comprising:

identification marks recorded in a pattern in which pits and spaces having a length of 9T or more are repeated at least once or more are formed.

9. The method of claim 3, wherein the RLL modulation method is an RLL (2, 10) modulation method.

10. The method of claim 9, further comprising:

a sync pattern formed in a remaining area using the RLL modulation method and including at least one of pits and spaces having a length of 12T or more is formed.

11. The method of claim 10, wherein the first data recorded according to the bi-phase modulation method comprises:

nT and 2nT length marks and nT and 2nT length spaces, where n is in the range of 3 ≦ n ≦ 5.

12. The method of claim 9, further comprising:

a sync pattern formed in the entire lead-in area or a portion of the lead-in area using the bi-phase modulation method and recorded with a pattern in which a sequence of marks and spaces having a length of 12T or more is repeated at least once or more.

13. The method of claim 9, further comprising:

an identification mark recorded in a pattern in which pits and spaces having a length of 12T or more are repeated at least once or more is formed in the entire lead-in area or a portion of the lead-in area.

14. The method of claim 3, wherein a length of the pit or the space used in the bi-phase modulation method is included in a range of lengths of the pits or the spaces used in the RLL modulation method.

15. The method of claim 1, wherein the first data recording modulation method is a bi-phase modulation method, and the second data recording modulation method is an RLL modulation method.

16. The method of claim 15, wherein the RLL modulation method is an RLL (1, 7) modulation method.

17. The method of claim 16, further comprising:

a sync pattern formed in the remaining area using an RLL (1, 7) modulation method and including at least one of pits and spaces having a length of 9T or more.

18. The method of claim 17, wherein the first data recorded according to the bi-phase modulation method comprises:

nT and 2nT length marks and nT and 2nT length spaces, where n is in the range of 2 ≦ n ≦ 4.

19. The method of claim 17, further comprising:

a sync pattern formed in the entire lead-in area or a portion of the lead-in area using the bi-phase modulation method and including at least one of pits and spaces having a length of 9T or more.

20. The method of claim 15, wherein the recording the first data and the recording the second data comprises: pits and spaces are recorded in the lead-in area, the user data area, and the lead-out area, and the periods of the pits and spaces recorded according to the bi-phase modulation method are included within the range of the periods of the pits and spaces used in the RLL modulation method.

21. The method of claim 15, wherein the recording the first data and the recording the second data comprises: the sync pattern is recorded using a bi-phase modulation method and includes a pit or a space of a maximum length included in the sync pattern recorded using an RLL modulation method.

22. The method of claim 15, wherein the first data and the second data are reproducible using the same phase-locked loop circuit.

23. A method of reproducing information from an optical information storage medium having a lead-in area, a user data area, and a lead-out area, on which data is recorded everywhere as pits, the method comprising:

reproducing first data, which is not modified depending on storage media complying with the same physical format, from the entire lead-in area or a portion of the lead-in area using a phase-locked loop circuit; and

reproducing second data from a remaining area of the optical information storage medium excluding the entire lead-in area or a portion of the lead-in area using the phase-locked loop circuit.