KR100716964B1 - Optical information storage media and method of recording in the same - Google Patents

Abstract

An optical information storage medium and a recording method thereof are disclosed.

The disclosed optical information storage medium has a maximum recordable speed in a rewritable area of at least one of the lead-in area and the lead-out area in an optical information storage medium having a lead-in area, a user data area, and a lead-out area. Characterized in that recorded.

Description

Optical information storage media and method of recording in the same}

1 is a view showing the structure of a lead-in area of an optical information storage medium according to the present invention.

2 is a view showing a part of the structure of the optical information storage medium recorded by the optical information storage medium recording method according to the present invention.

3A is a diagram for explaining an optical information storage medium and a recording method thereof according to the first embodiment of the present invention.

3B is a view for explaining an optical information storage medium and a recording method thereof according to the second embodiment of the present invention.

4 is a view for explaining an optical information storage medium and a recording method thereof according to a third embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10 ... Embossed data zone 20 ... Mirror zone

30 ... Rewritable data zone 30c ... Disc ID zone

30c-1,30c-2,30c-3,30c-4 ... Disc ID Information Area

30c-5,30c-6 ... holding area 35 ... 0 BP

The present invention relates to an optical information storage medium and a recording method thereof, and more particularly to recording the maximum recordable speed or recordable speed of a disc in a rewritable area in a region other than the user data area and the disc drive recording the speed. The present invention relates to an optical information storage medium and a recording method thereof capable of recognizing and recording at an appropriate recording speed.

In general, an optical information storage medium, for example, an optical disc is widely used as an information medium of an optical pickup device for recording / reproducing information in a non-contact manner, and is used as a compact disc (CD) or a digital multi-function disc (DVD) according to the information recording capacity. Digital Versatile Disc). In addition, optical discs capable of recording, erasing, and reproducing data include CD-Rs, CD-RWs, DVD-RWs, DVD-RAMs, and DVD + RWs.

On the other hand, as the recording speed of the optical disc becomes higher, the performance of the drive is newly developed to match the speed. There are suitable recording characteristics depending on the recording speed of the disc, and reliable recording will be performed only if the disc drive is operated to satisfy these characteristics. By the way, in a general disk drive, a good recording is performed on a low speed disc, but a relatively high speed disc does not satisfy the recording characteristics, and thus there is a high possibility of damaging user data. On the contrary, user data may be damaged even when writing to a low speed disc using a disc drive made for high speed.

Therefore, accurate information about the recording speed of the disc is needed. Therefore, the recording speed of the disc is recorded in a predetermined area of the disc, and the disc drive recognizes the speed and records at a speed suitable for the disc to be recorded. For example, if the disc to be recorded is doubled, the speed is recorded in a predetermined area of the disc when the disc is shipped, and the disc is recorded in consideration of the recording characteristics of the disc when recording by the disc drive.

By the way, it is often found that the disc test does not satisfy the recording speed of the disc as described above. For example, a 4x speed disc has been produced and the recording speed of the disc has been recorded at 4x speed in a predetermined area of the disc. Here, although it may be impossible to use due to a defective disk, there may be a case where it is not suitable for 4x speed but there is no problem for 3x speed or 2x speed of lower speed. In this case, since the recording speed is recorded at 4x speed during disc production, it is recognized as 4x speed by the disc drive, and recording is performed corresponding to the speed. Actually, the 4x speed performance is not satisfied. It may cause damage to user data. Therefore, as described above, the disk was inadequate for 4x speed, but was treated as a defective disk until there was no problem for 3x speed or 2x speed smaller than 4x speed.

However, in the case of a disk that does not satisfy the speed as designed in making a disk, but satisfies a smaller speed than that, it is very wasteful to treat it as a bad disk and discard it. Therefore, there is a need to find a way to recycle a disc that does not satisfy the prescribed recording speed at first to a disc that meets a lower recording speed. In addition, follow-up measures are required for cases in which the recording speed of the disc is reduced due to various working environments in the disc manufacturing process.

SUMMARY OF THE INVENTION The present invention was created to solve the above-mentioned problems, by recording the maximum recordable speed or the recordable speed in a rewritable area of the area excluding the user data area so as to be recorded at an optimum speed for a storage medium to be recorded. It is an object of the present invention to provide an optical information storage medium and a recording method thereof, which can ensure the stability of user data.

An optical information storage medium according to a preferred embodiment of the present invention is an optical information storage medium having a lead-in area, a user data area, and a lead-out area, wherein at least one of the lead-in area and the lead-out area is rewritable. The maximum recordable speed is recorded in the area.

The maximum recordable speed is repeatedly recorded in the rewritable areas of the lead-in area and the lead-out area.

The rewritable area includes a disc ID zone having at least one disc ID information area on which disc ID information is recorded and a reserved area, and wherein a maximum recordable speed is recorded in the at least one disc ID information area or a reserved area. It features.

A minimum recordable speed is further recorded in at least one of the rewritable areas of the lead-in area and the lead-out area.

In order to achieve the above object, the optical information storage medium according to the present invention, in the optical information storage medium having a lead-in area, a user data area and a lead-out area, at least one of the lead-in area and the lead-out area The recordable speed information is recorded in the rewritable area of.

The recordable speed information corresponding to each bit in a predetermined byte of the rewritable area is recorded for each bit.

In order to achieve the above object, a recording method of an optical information storage medium according to the present invention is a recording method of an optical information storage medium having a lead-in area, a user data area, and a lead-out area. Recording a maximum recordable speed in at least one rewritable area of the out area; And performing recording by recognizing the maximum recordable speed in the disc drive.

In order to achieve the above object, a recording method of an optical information storage medium according to the present invention is a recording method of an optical information storage medium having a lead-in area, a user data area, and a lead-out area. Recording recordable speed information in at least one rewritable area of the out area; And performing recording by recognizing the recordable speed in the disc drive.

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

1 schematically illustrates a structure of a lead-in area in an optical information storage medium including a lead-in area, a user data area, and a lead-out area. The lead-in area includes an embossed data zone 10, a mirror zone 20, and a rewritable data zone 30 in which basic information about the disc is recorded in a pit form on the innermost circumference of the disc. Include.

The embossed data zone 10 is provided with a control data zone 10a in which the normal recording speed of the disc is recorded. The normal recording speed of a disc is a recording speed such as 2 times, 3 times, 4 times, etc., which is determined at the time of disc design, and is recorded in the control data zone 10a as one of the disc information. When data is recorded on the disk, the recording speed of the recorded disk is recognized by the disk drive so that the data can be recorded under the optimum conditions for the recording speed.

The mirror zone 20 may be provided with a connection zone connecting the embossed data zone 10 and the rewritable data zone 30.

The rewritable data zone 30 may include a disc test zone 30a, a drive test zone 30b, a disc ID zone 30c, a defect management zone 30d, and the like. The disc ID zone 30c is provided with at least one disc ID information area in which disc ID information is recorded. Here, for example, the first to fourth disk ID information areas 30c-1, 30c-2, 30c-3 and 30c-4 are provided. In addition, at least one reserved area 30c-5 and 30c-6 may be further provided as a free area that is not intended but can be recorded thereafter.

In addition, since the lead-out area has a structure similar to the lead-in area described above, a detailed description thereof will be omitted.

Ideally, the optical information storage medium should satisfy the normal recording speed of the disc recorded in the control data zone 10a. However, in practice, the optical recording medium does not satisfy the normal recording speed of the disc due to an error in the manufacturing process and lower recording speed. Satisfaction may occur. In this case, it is necessary to newly record the recordable recording speed which is actually satisfied in place of the normal recording speed.

A recording method of an optical information storage medium according to the first embodiment of the present invention includes recording a maximum recordable recording speed in at least one of the rewritable areas of the lead-in area and the lead-out area. For example, the maximum recordable recording speed can be recorded in a predetermined area of the rewritable data zone 30.

Referring to FIG. 2, a predetermined area of the data zone 30 may include a plurality of bytes, and a maximum recordable speed may be recorded in any one of the plurality of bytes. For example, the recordable speed flag is recorded in the 0 byte position (BP) 35 of the predetermined area of the rewritable data zone 30. Although the case where the recordable speed is recorded in the 0 byte position 35 is illustrated here, it is possible to record the recordable speed in the desired byte position including the 1 byte position.

Looking at the internal structure of the zero byte position 35, as shown in Fig. 3A, 0-7 bits (b0) (b1) (b2) (b3) (b4) (b5) (b6) (b7) up to 8 bits, for example, the maximum speed flag can be recorded in the seventh bit b7 and the sixth bit b6. The remaining bits are left in the reserved area. Specifically, the following maximum speed flag may be recorded using two bits of the seventh bit b7 and the sixth bit b6.

Here, the case where the normal recording speed is 5X (5X) will be described as an example. First, when the speed flag is recorded as 00b, recording is possible at the normal recording speed. In other words, here, recording is possible at maximum 5 times speed. Secondly, when recorded as 01b, it indicates that the maximum recordable speed is 2X (2X), which means that it cannot be recorded at a speed exceeding 2X. Third, the maximum recordable speed is 3X (3X) when recorded at 10b, and the fourth, the maximum recordable speed is 4X when recorded at 11b.

As another example, when the normal recording speed is 3X (3X), when the speed flag is recorded at OOb, it indicates that recording is possible at the normal recording speed of 3X, and when it is recorded at 01b, the maximum recordable speed is 2X. Indicates that

Furthermore, the speed flag can be written in three bits for application to discs of 6x or more speed. For example, for a disc at 6x speed, 000b can record at a maximum speed of 6x, it cannot be recorded at speeds greater than 6x, 001b has a maximum recordable speed of 2x, and 010b is a maximum recordable speed. Represents the case of 3 times speed.

In the above example, the case where the maximum speed is recorded using 2 bits or 3 bits has been described. In addition, the maximum speed may be recorded using 4-8 bits. In other words, it is possible to record the maximum recordable speed using at least one bit of any one byte in the rewritable area.

In this manner, the maximum recordable speed is recorded in a predetermined area of the rewritable data zone of the lead-in area, and the disc drive causes the disc drive to record at the optimum recording speed in accordance with the maximum recordable speed.

Preferably, the maximum recordable speed can be recorded in at least one disc ID information area 30c-1, 30c-2, 30c-3 and 30c-4 in the disc ID zone 30c. have. Alternatively, it may be recorded in the reserved areas 30c-5 and 30c-6 of the disc ID zone 30c. On the other hand, in the above example, the case where the maximum recordable speed is recorded in the rewritable area of the lead-in area has been described, but it can be recorded in the rewritable area of the lead-out area provided on the outer circumferential side of the storage medium.

In addition, in order to ensure the reliability of the maximum recordable speed, the maximum recordable speed may be repeatedly recorded in the rewritable areas of the lead-in area and the lead-out area.

In the optical information recording medium according to the first embodiment of the present invention, the maximum recordable speed is recorded in a predetermined area of the rewritable area of at least one of the lead-in area and the lead-out area according to the above-described method. The maximum recordable rate may be written to the rate flag using at least one bit of a given byte.

Meanwhile, in the above example, the case where the maximum recordable speed information is recorded in the zero byte position BP has been described. However, the present invention is not limited to the zero byte position and is equally applicable to other byte positions.

An optical information recording medium recording method according to a second embodiment of the present invention includes the steps of recording a maximum recordable speed and a minimum recordable speed in a rewritable area of at least one of a lead-in area and a lead-out area. For example, the maximum recordable recording speed can be recorded in a predetermined area of the rewritable data zone 30. Here, the rewritable data zone is provided not only in the lead-in area but also in the lead-out area.

The maximum recordable speed and the minimum recordable speed are determined in a predetermined area of the rewritable data zone 30, for example, disc ID information areas 30c-1, 30c-2, 30c-3, 30c-4, or It can be recorded in the reserved areas 30c-5 and 30c-6. The disc ID information areas 30c-1, 30c-2, 30c-3, 30c-4 or the reserved areas 30c-5 and 30c-6 are composed of a plurality of bytes, and any of these bytes is used. In one byte position, record the maximum recordable speed and the minimum recordable speed as shown in FIG. 3B.

Further, in order to ensure reliability, it is preferable to record the maximum recordable speed and the minimum recordable speed in duplicate in the rewritable areas of the lead-in area and the lead-out area.

Specifically, an example will be described in which the normal recording speed is recorded at 8 times speed, but the result is that 5-7 times speed is satisfied when testing the recording characteristics of the disc. Here, the maximum recordable speed is 7 times and the minimum recordable speed is 5 times. 3B shows the maximum recordable speed in the seventh through fourth bits b7, b6, b5, and b4, and the minimum recordable in the third through zeroth bits b3, b2, b1, and b0. The case of recording the speed is illustrated. Thus, an example showing the maximum or minimum recordable speed using 4 bits is shown in the table below.

     beat     Recording speed      0000b      2x      0001b      3x      0010b      4x      0011b      5x      0100b      6x      0101b      7x      0110b      8x      0111b      9x

 By using Table 1, the case of satisfying the 5-7 times speed is as shown in 01010011b. Here, the maximum recordable speed and the minimum recordable speed are respectively shown using 4 bits, but the maximum recordable speed and the minimum recordable speed can be represented using 3 bits or 2 bits, respectively.

In the optical information storage medium recorded by the recording method according to the second embodiment of the present invention, the maximum recordable speed and the minimum recordable speed are recorded in at least one of the rewritable areas of the lead-in area and the lead-out area. . The maximum recordable speed and the minimum recordable speed can be recorded using 2 to 4 bits, respectively.

Next, an optical information storage medium and a recording method thereof according to the third embodiment will be described.

According to the third embodiment, the method comprises recording the recordable speed for each bit in a predetermined area of at least one of the rewritable area of the lead-in area and the lead-out area.

 For example, the recordable speed can be recorded using any byte in a predetermined area of the rewritable data zone 30 shown in FIG. Recording in the disc ID information areas 30c-1, 30c-2, 30c-3, 30c-4 or reserved areas 30c-5 and 30c-6 provided in the rewritable data zone 30. FIG. Record the possible speed. The disc ID information areas 30c-1, 30c-2, 30c-3, 30c-4 and the reserved areas 30c-5 and 30c-6 are composed of a plurality of bytes, and any of these bytes is included. The recordable speed is recorded for each bit using 8 bits of one byte.

Specifically, different writable speeds correspond to each bit of a predetermined byte position, and information on each corresponding writable speed is recorded for each bit. For example, the speed corresponding to each bit may be defined as follows.

     Bit position    Recordable speed      7 b      9x      6 b      8x      5 b      7x      4 b      6x      3 b      5x      2 b      4x      1 b      3x      0 b      2x

By referring to Table 2, the information on the recordable speeds corresponding to the respective bit positions may be recorded to represent all of the recordable speeds. That is, when 0b is written in the seventh bit 7b, it is impossible to record at 9 times speed, and when 1b is written, it is possible to write at 9 times speed. In addition, when 0b is written in the sixth bit 6b, it is impossible to record at 8 times speed, and when 1b is written, recording is possible at 8 times speed. The same applies to the remaining fifth to zeroth bits 5b, 4b, 3b, 2b, 2b, 1b, and 0b to indicate information about a recordable speed corresponding to each bit. have.

According to the third embodiment, for example, when the normal recording speed is recorded at 9 times speed and it is shown that the characteristics of 5-7 times speed are satisfied in the test on the recording property, the recordable speed is recorded by referring to Table 2 00111000b. It can be recorded as

Here, in order to ensure reliability, the recordable speed can be repeatedly recorded in the rewritable area of the lead-in area and the lead-out area.

According to the second and third embodiments described above, since all the recordable speeds can be represented, there is an advantage of providing information about a more accurate and specific recording speed. In particular, as the recording speed becomes higher, problems with compatibility with a disk drive designed for low speed may occur. For example, in a high speed disc drive of 5 times or more, recording may not be normally performed on a disc that satisfies a recording characteristic of less than 5 times. In this case, by recording all information on the recordable speed, the response to the recordable speed can be enhanced.

On the other hand, such speed flag information should be recorded only by the disc manufacturer, and should be protected from being changed, erased, etc. by the disc drive after the disc is shipped.

As described above, the optical information storage medium and the recording method thereof according to the present invention can improve the responsiveness to the case where the normal speed is not satisfied due to an error in the manufacturing process of the storage medium. In particular, as the recording speed becomes higher and higher in recent years, the necessity of the present invention may be more urgently required.

The optical information storage medium and the recording method thereof according to the present invention can reduce the defective rate and prevent the loss of user data due to incorrect application of the recording speed.

Claims (27)

In an optical information storage medium having a lead-in area, a user data area and a lead-out area, At least one rewritable area of the lead-in area and the lead-out area, the normal recording speed determined when the information storage medium is designed and the maximum recordable speed measured after the optical information storage medium is recorded are recorded. Optical information storage medium. The method of claim 1, And a maximum recordable speed is repeatedly recorded in the rewritable areas of the lead-in area and the lead-out area. The method according to claim 1 or 2, The rewritable area includes a disc ID zone having at least one disc ID information area on which disc ID information is recorded and a reserved area, and wherein a maximum recordable speed is recorded in the at least one disc ID information area or a reserved area. Optical information storage medium characterized in that. The method according to claim 1 or 2, And said maximum recordable speed is recorded with a speed flag using at least one or more bits of a predetermined byte in a rewritable area. The method of claim 3, wherein And said maximum recordable speed is recorded with a speed flag using at least one or more bits of a predetermined byte in a rewritable area. The method of claim 1, And a minimum recordable speed is further recorded in at least one rewritable area of the lead-in area and the lead-out area. The method of claim 6, The rewritable area includes a disc ID zone having at least one disc ID information area on which disc ID information is recorded and a retention area, and has a maximum recordable speed and a minimum recordable capacity in the at least one disc ID information area or a reserved area. Optical information storage medium, characterized in that the speed is recorded. The method according to claim 6 or 7, And wherein the maximum recordable speed and the minimum recordable speed are each recorded at a speed flag using at least one bit of a predetermined byte in the rewritable area. The method according to claim 6 or 7, And a maximum recordable speed and a minimum recordable speed are respectively duplicated and recorded in the rewritable areas of the lead-in area and the lead-out area. In an optical information storage medium having a lead-in area, a user data area and a lead-out area, In the rewritable area of at least one of the lead-in area and the lead-out area, a normal recording speed determined when the optical information storage medium is designed and recordable speed information measured after manufacturing the optical information storage medium are recorded. Optical information storage medium. The method of claim 10, And recordable speed information corresponding to each bit in a predetermined byte of the rewritable area is recorded for each bit. The method of claim 11 or 12, The rewritable area includes a disc ID zone having at least one disc ID information area in which disc ID information is recorded and a reserved area, and a recordable speed in bits is recorded in the at least one disc ID information area or the reserved area. Optical information storage medium characterized in that the. The method of claim 11 or 12, And a recordable speed is repeatedly recorded in the rewritable areas of the lead-in area and the lead-out area. A method of recording an optical information storage medium having a lead-in area, a user data area and a lead-out area, Recording in the rewritable area of at least one of the lead-in area and the lead-out area, a normal recording speed determined in the design of the optical information storage medium and a maximum recordable speed measured after the optical information storage medium is manufactured; And recording by recognizing the maximum recordable speed in a disc drive. The method of claim 14, And a maximum recordable speed is repeatedly recorded in the rewritable areas of the lead-in area and the lead-out area. The method according to claim 14 or 15, The rewritable area includes a disc ID zone having at least one disc ID information area for recording disc ID information and a reserved area, and wherein a maximum recordable speed is recorded in the at least one disc ID information area or a reserved area. An optical information storage medium recording method. The method according to claim 14 or 15, And said maximum recordable speed is recorded with a speed flag using at least one bit of a predetermined byte in a rewritable area. The method according to claim 14 or 15, And said maximum recordable speed is recorded with a speed flag using at least one bit of a predetermined byte in a rewritable area. The method of claim 14, And a minimum recordable speed is further recorded in the rewritable area of at least one of the lead-in area and the lead-out area. The method of claim 19, And a maximum recordable speed and a minimum recordable speed are respectively recorded in the rewritable areas of the lead-in area and the lead-out area in duplicate. The method of claim 19 or 20, The rewritable area includes a disc ID zone having at least one disc ID information area on which disc ID information is recorded and a retention area, and has a maximum recordable speed and a minimum recordable capacity in the at least one disc ID information area or a reserved area. An optical information storage medium recording method, characterized in that the speed is recorded. The method of claim 19 or 20, And wherein the maximum recordable speed and the minimum recordable speed are each recorded at a speed flag using at least one bit of a predetermined byte in the rewritable area. A recording method of an optical information storage medium having a lead-in area, a user data area, and a lead-out area, Recording in the rewritable area of at least one of the lead-in area and the lead-out area, a normal recording speed determined at the time of designing the optical information storage medium and recordable speed information measured after manufacture of the optical information storage medium;  And recording by recognizing the recordable speed in a disc drive. The method of claim 23, wherein And recordable speed information corresponding to each bit in a predetermined byte of the rewritable area is recorded for each bit. The method according to claim 23 or 24, And a maximum recordable speed is repeatedly recorded in the rewritable areas of the lead-in area and the lead-out area. The method according to claim 23 or 24, The rewritable area includes a disc ID zone having at least one disc ID information area in which disc ID information is recorded and a reserved area, and a recordable speed in bits is recorded in the at least one disc ID information area or the reserved area. Optical information storage medium recording method, characterized in that the. The method of claim 25, The rewritable area includes a disc ID zone having at least one disc ID information area in which disc ID information is recorded and a reserved area, and a recordable speed in bits is recorded in the at least one disc ID information area or the reserved area. Optical information storage medium recording method, characterized in that the.

Images