KR20000060955A - Error correction code block structure for high density disc and error correction method therefor - Google Patents

Abstract

PURPOSE: An error code block structure for a high density disk and an error correction method of the same are provided for performing an error correction operation even when the length of a data of an ECC block exceeds 256 bytes which is an error correction computation range in GF(Galois Field). CONSTITUTION: The structure of the ECC block is called 1way PI/2way PO error correction method. An internal code(PI) is generated with respect to an internal code of n-byte. An external code parity is divided into first and second external code parity(PO1), PO2) with respect to an outer code of m byte having a data length which exceeds a range of an error correction computation. For example, the first external code(PO1) is generated with respect to the (2n+1)th columns(B1, 0, B3, 0, B5, 0 , B7...), and the second external code parity(PO2) is generated with respect to the (2n)th columns(B1, 0, B3, 0, B5, 0, B7, 0...).

Description

Error correction code block structure for high density disc and error correction method therefor}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of data processing in optical discs, and more particularly, to an error correction method (ECC) block structure and burst error correction capability for high density discs.

A conventional ECC block for a DVD (Digital Versatile Disc) adds 10 bytes of error correction parity for 172 bytes of data in a row direction as an internal code parity (PI) as shown in FIG. As call parity PO, an ECC block is formed by adding 16-byte error correction parity to 192 bytes of data in the column direction. At this time, the size of one sector before adding parity is 2064 bytes (= 172 bytes). 12 rows), and the total size of the ECC block before parity addition is composed of 16 sectors, for a total of 33024 bytes (= 172 bytes). 12 rows 16 sectors).

The physical structure before recording has a total of 13 rows by performing a row interleave for adding sync and inserting one row for every sector (12 rows) as shown in FIG. Is the size of one sector. Therefore, 120 bytes (= 10 bytes, which is the inner code parity) 12) and 182 bytes, which is the outer code parity, the total number of added parities is 302 bytes, and the ratio of parity (parity redundancy) to one sector is 12.8% (= 302 bytes / 2366 bytes).

As for sector redundancy, a sector of 318 bytes has been added with parity of 302 bytes with 4 bytes of address, 2 bytes of address error correction parity, 6 bytes of reserved data, and 4 bytes of error detection parity. Redundancy is 13.4% (= 318/2366). The maximum burst error correction capability is 1.23 sectors (= 16 rows / 13 rows (= 1 sector)).

Smaller scratches on high-density (HD) discs (also known as HD-DVDs) for higher density recording and playback than DVDs inevitably result in larger data loss than conventional DVDs. It is an error correction technique that can compensate for such data loss, and according to its application method, it greatly affects the amount of user data recorded and the reliability of user data during recording and playback. Therefore, if the error correction method applied to the DVD is applied to the HD-DVD as it is, the reliability of the reproduced data is much lowered.

That is, in the high density disc recording / reproducing apparatus, when one recording unit is set to 2 KB (kilobytes) equal to DVD, in order to have the same consolidation error correction capability as the DVD, it is impossible without increasing the redundancy with the structure as shown in FIG. Do.

Therefore, in order to have the same error error capability as DVD in a high-density optical disc recording / reproducing apparatus, the ECC block must be large, but there is a problem that the error correction cannot be properly performed with the ECC block structure shown in FIG. The reason is that beyond the error correction operation range (in the GF (28) Galoa field operation, the ECC block length must be within 256 bytes), that is, in a structure having an ECC block structure having a data length of 256 bytes or more. This is because the error location cannot be obtained.

In order to overcome the above problems, an object of the present invention is to increase the ECC block size while not increasing redundancy, and even if the length of data of the ECC block exceeds a predetermined error correction operation range, the Galois Field GF ( The present invention provides an ECC block structure for a high density disk capable of performing error correction.

Another object of the present invention is to provide an error correction method for a high density disk having an ECC block structure that exceeds a predetermined error correction operation range.

In order to achieve the above object, the present invention provides an ECC block structure for a high density disk in an error correction code (ECC) block structure for a high density disk; For an internal code exceeding a predetermined error correction operation range, an internal call parity for an internal code divided into a plurality of groups within the error correction operation range is divided into a plurality of groups, and a predetermined error correction operation range is similarly added. The outer code parity for the outer code divided into a plurality of groups within the error correction operation range is added to the plurality of groups by dividing the excess outer code into a plurality of groups.

In order to achieve the above another object, an error correction method for a high density disc according to the present invention is an error correction method performed in a high density disc recording and / or reproducing apparatus, comprising: an internal code exceeding a predetermined error correction operation range; Generating the inner code parity for the inner code divided into the plurality of groups within the operation range into a plurality of groups, and adding the inner code parity divided into the plurality of groups to the inner code, and And generating an error correction code (ECC) block by adding an external code parity of a predetermined size and correcting the error.

1 is a structure of a conventional error correction code (ECC) block.

FIG. 2 is a pre-write physical structure for the ECC block shown in FIG.

3 is an embodiment of an ECC block structure for a high density disk according to the present invention.

FIG. 4 is a diagram showing a pre-record physical structure for the ECC block shown in FIG. 3 and column interleaving of outer code parity.

5 is another embodiment of an ECC block structure for a high density disk according to the present invention.

FIG. 6 is a diagram showing a pre-write physical structure for the ECC block shown in FIG. 5 and row interleaving of inner code parity.

7 is another embodiment of an ECC block structure for a high density disk according to the present invention.

FIG. 8 shows a pre-write physical structure for the ECC block shown in FIG. 7 and shows column interleaving of outer code parity and row interleaving of inner code parity.

9 is a table summarizing the error correction method and the correction capability according to the sector size when the size of user data in one sector is 4 KB.

10 is a table comparing features according to three error correction methods proposed in the present invention.

11 is a table summarizing the error correction method and the correction capability according to the sector size when the size of user data in one sector is 2 KB.

12 is an example of a pre-write physical structure for an ECC block using the sector size shown in FIG.

FIG. 13 is another example of a pre-write physical structure for an ECC block using the sector size shown in FIG.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the ECC block structure and its error correction method for a high density disk according to the present invention.

3 is a structure of an ECC block according to an embodiment of the present invention, which is referred to as a 1 way PI / 2way PO error correction method in the present invention. Inner code parity (PI) is generated for an inner byte of n bytes, and outer code parity is defined as first and second outer code parity (PO1, PO2) for an outer byte of m bytes having a data length exceeding an error correction operation range. For example, the first outer code parity PO1 is generated for odd-numbered rows B0,0, B2,0, B4,0, B6,0, ..., and even-numbered rows B1,0 A second outer code parity PO2 is generated for, B3,0, B5,0, B7,0, ..., and the error correction operation range (for example, the calculation range of the GF 28) in the outer code direction. The ECC block can have error correction even with data lengths exceeding 256 bytes).

FIG. 4 is a diagram showing the physical interleaving of the outer code parity and the physical structure before recording the ECC block shown in FIG. 3. column). In addition, the first outer code parity PO1 and the second outer code parity PO2 are alternately arranged (column interleaved) for each sector so that the aggregation error does not occur intensively in the first and second outer code parities. The error correction capability of the call is secured.

5 is a structure of an ECC block according to another embodiment of the present invention, which is referred to as a 2 way PI / 1way PO error correction method in the present invention. An outer code parity (PO) is generated for an outer byte of m bytes, and an inner code parity (PI1) is set for an inner byte of n bytes having a length of data exceeding an error correction operation range. For example, the first inner code parity PI1 is generated for the odd-numbered columns B0,0, B0,2, B0,4, B0,6, ..., and the even-numbered columns B0, Generate a second inner code parity (PI2) for 1, B0, 3, B0, 5, B0, 7, ..., and calculate the error correction operation range in the inner arc direction (for example, the operation range of GF 28). Can be error corrected even with data lengths greater than 256 bytes).

Here, in order to change the aggregation error due to random jitter into a random error in the inner arc direction, for example, the odd-numbered columns B0, 0, B0, 2, B0, 4, B0, 6,. First inner code parity (PI1) for ..) and second inner code parity (PI2) for even columns (B0,1, B0,3, B0,5, B0,7, ...) ), But not limited to odd-numbered and even-numbered columns, it is possible to convert a continuous error caused by a concatenation error into a random error by generating parity of an inner code while changing data intervals.

FIG. 6 is a diagram showing the physical interworking and interleaving of the inner code parity before recording the ECC block shown in FIG. 5, wherein the first and second inner code parities PI1 and PI2 are arranged in one inner code row. In this case, at least two or more positions (in the drawings, two or more positions) may be divided and arranged so that the aggregation error does not occur intensively in the first and second internal call parity PI1 and PI2. By alternately arranging the second inner code parity (PI2) by interleaving the rows, the effects of random jitter between codewords or two-byte continuous error effects caused by using the same codeword are used. The effect of distributing by error can be expected, and the error correction capability of the inner code is secured.

7 is a structure of an ECC block according to another embodiment of the present invention. In the present invention, this structure is referred to as a 2-way PI / 2way PO error correction method. (For example, the operation range of the GF 28 should be within 256 bytes of the error correction block.) Even if the data length exceeds the structure of the ECC block capable of error correction.

For example, in the inner arc direction, the first and second inner arc parities PI1 and PI2 are divided into, for example, odd-numbered columns B0, 0, B0, 2, B0, 4, B0, 6, ... Generate the first inner code parity (PI1) for the second column and the second inner code parity (PI2) for the even columns B0,1, B0,3, B0,5, B0,7, ... In the outer arc direction, the first and second outer arc parities PO1 and PO2 are divided into, for example, the first row for the odd-numbered rows B0,0, B2,0, B4,0, B6,0, ... The outer code parity PO1 is generated, and the second outer code parity PO2 is generated for even-numbered rows B1, 0, B3, 0, B5, 0, B7, 0, ....

FIG. 8 is a diagram illustrating a physical structure before recording the ECC block shown in FIG. 7 and showing column interleave of outer code parity and row interleave of inner code parity, wherein the first outer code parity PO1 and the second outer code parity ( By arranging PO2) alternately for each sector, thermal interleaving is performed so that aggregation error does not occur intensively in the first and second outer code parity, and also the first and second inner code parity (PI1, PI2) are placed in two places. The above-described arrangement is arranged in two places, and the first internal call parity PI1 and the second internal call parity PI2 are alternately arranged in the first and second internal call parity PI1 and PI2. Row interleaving is performed to prevent aggregation errors from occurring intensively.

On the other hand, assuming that the starting radius of the data area is 24 mm (the same as DVD) in HD-DVD, which is about four times the recording density of a DVD, assuming that EFMPLUS modulation is used while using the same data structure as the DVD. There are about 50 sectors in the inner track. In other words,

to be. Where 0.077 m is one pit length (1T), 1488 is the number of channel bits in one sync frame, and 26 is the total number of frame syncs falling within one sector.

Since 29 sectors exist in the innermost track of a DVD-ROM (Read Only Memory), which is an example of DVD, HD-DVD has about twice the linear density, and also reduces overhead such as PID (Packet Identifier). Since there is a need for it, it is advantageous to increase the data capacity to 4 KB (kilobytes) of user data capacity in one sector.

In addition, the size of one sync frame in HD-DVD is usually 100, which means that the size of a defect can be visually observed on the surface of the disc. Let's say m is a bit bigger than this. In fact, for DVD, the size of 1 sync frame is 198 including sync m (= 0.133 m 16 93) or so. Where 0.133 m is 1T, 16 is the codeword length after modulation, and 93 is the size of data in units of one sync frame of DVD (= 91 bytes of internal code data size and 2 bytes of sync) as shown in FIG. Indicates.

For HD-DVD, the minimum pit (pit = 3T) is 0.23 The physical length required to represent m and one byte of data (whatever modulation code is used is assumed to be similar to achieve recording density) is 1.23 m (= 0.23 m / 3 16). When compared with the DVD, a simple calculation shows that 161 bytes (= 198 / 1.23) is the size of data required for sync frames of HD-DVD. Therefore, the size of a sync frame suitable for HD-DVD is suitably between 150 bytes and 200 bytes. However, there may be other factors such as the performance of a phase locked loop (PLL) or the performance of a signal reproducing circuit in addition to determining the size of the sync frame.

Fig. 9 is a table showing the size of the sync frame data by sector size when possible to generate a sector structure in the ECC block. The sector structure is defined as 4 KB of user data in one sector. Size 150) Possible data structures between 400 are shown. In addition, the data scale, error correction method, and maximum correction capability of the outer code PO are shown.

The maximum correction capability shown in FIG. 9 is when the total number of outer code parity is fixed to 16 rows. In this case, the maximum correction capability of the 1 way PI / 2 way PO error correction method is naturally 2 way PI / 1 way PO error correction. Parity redundancy is reduced, but parity redundancy is reduced. If parity redundancy is the same, that is, the total number of outer code parities of the 1 way PI / 2 way PO error correction method is 32, and the 2 way PI / 1 way PO error correction method is used. The parity redundancy and the maximum correction capability are the same for the total number of rows of the outer code parifier of 16 rows.

However, the advantage of the 2 way PI / 1 way PO error correction method is that the first inner code parity (PI1) is added to the odd-numbered data bytes in the inner code direction, and the second inner code parity (PI2) to the even-numbered data bytes. 2) continuous error of two bytes generated by using random jitter between codewords or using the same codeword when demodulating by row interleaving the first and second internal parity PI1 and PI2 The effect of distributing the effect to one byte of random error can be expected.

As can be seen from the table shown in Figure 9, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 22 Error correction method proposed by the present invention when having sector size, sink size, inner arc size and outer arc size as 1, 23, 25, 26, 27 (1 way PI / 2 way PO, 2 way) PI / 1 way PO, 2 way PI / 2 way PO)

For example, the seven error correction methods of 4104 bytes in sector size, 152 bytes in sink size, 152 bytes in inner code size, and 432 bytes in outer code size apply 1 way PI / 2 way PO. The correction capability is 16/28 sectors.

In the case of DVD, the data size of one sector is 2064 bytes excluding internal and external parity, so all the results shown in FIG. 9 are found within a range that does not lose in terms of data redundancy. In the case of sector size of 4108 bytes or less, 6 bytes of ID and IED (parity of ID) are subtracted from the sector structure (Fig. 7, 8, 9, 10, 11, 12, 13, 13). Number 4114 bytes in size and ID and IED in one sector structure (14, 16, 17, 18, 19, 20, 22, 23, 25 in the drawing). , 26, 27).

When ID and IED are subtracted from 1 sector structure, HD-DVD Random Access Memory (RAM) allows only a PID structure to exist instead of a PID / DID (Detection Identifier) structure as in DVD-RAM. Can be increased. Here, ID may be referred to as address information and IED may be referred to as parity for address information correction.

First, when the ID and IED are outside the sector structure, the minimum required size of the sector must be 4104 bytes (= user data (4096 bytes) + spare area (6 bytes) + EDC (2 bytes)) Error correction is not possible when the data length exceeds 256 bytes in the row direction. Therefore, a 2 way PI / 1 way PO error correction method or a 1 way PI / 2 way PO error correction method, which is an example of an error correction method proposed by the present invention, should be used. In the case of 2 way PI / 1 way PO, the number of rows in the inner arc must be even. The final decision takes into account the redundancy efficiency of the data and the maximum correction capability.

When the ID is located outside the sector structure, i.e., when the sector size is 4108 bytes or less, it is given as follows.

For 4104 bytes: Reserved Area (6 bytes) + User Data (4096 bytes) + EDC (2 bytes)

For 4108 bytes: Reserved area (6 bytes) + User data (4096 bytes) + EDC (4 bytes) + 2 bytes spare (can be used as an ID substitute)

Here, the ID and IED structure is the same structure as the DVD, and the spare area keeps 6 bytes as it is because the DVD uses all 6 bytes for copy protection, the user data is 4096 bytes, and the EDC is allocated 4 bytes in the DVD. If the size of the sector is 4104 bytes, only 2 bytes are allocated. The error detection code for this EDC takes into account the Cyclic Redundancy Check (CRC) -16 system used for the subcode of the CD. However, if the error detection rate is reduced to 1/232 or 2 bytes for DVD, Increases to / 216. If the sector size is 4108 bytes, the same 4-byte EDC structure as the DVD is possible.

On the other hand, when the ID is located in the sector structure, i.e., when the sector size is 4114 bytes or more, 6 bytes identical to those of the DVD are allocated for the ID and IED structures, and 6 bytes are kept as is in the spare area, and the user data area is 4096. Bytes, and the EDC is the same 4-byte EDC structure as the DVD, the minimum required size of the sector is 4114 bytes (= ID + IED (6 bytes) + spare area (6 bytes) + user data (4096 bytes) + EDC). (4 bytes) + 2 bytes extra).

10 shows the error correction method proposed by the present invention when the size of user data in a sector is 4 KB and the ECC block structure is 64 KB (1 way PI / 2 way PO, 2 way PI / 1 way PO, 2 way PI /). The result of comparing the characteristics according to 2 way PO) is shown in a table, and the criterion of the correction capability is based on the correction capability of the DVD, the parity redundancy of the DVD is 12.8% (= 302/2366), and the sector of the DVD Redundancy is 13.4% (= 318/2366).

In the tables shown in FIGS. 9 and 10, the total redundancy is maintained similar to that of the DVD, but the number of correctable bytes can be increased by about twice the DVD in terms of concatenation error correction capability, so that the physical defects that can actually occur can be maintained at the same size. The best way is with 2 way PI / 1 way PO. In this error correction method, the error correction capability is improved, but the output can be output immediately after the internal code error correction without an error, so the delay of the output data does not lag behind the DVD.

In this 2 way PI / 1 way PO error correction method, as described above with reference to FIGS. 5 and 6, the parity in the inner code direction adds the first inner code parity to the odd byte of the inner code, and the even byte of the inner code. Adds a second inner code parity to the row and then interleaves the first and second inner code parities to demodulate an error due to one random jitter between codewords or a two-byte continuous error caused by using the same codeword. This has the effect of distributing the effect to 1 byte of random error.

FIG. 11 is a table summarizing an error correction method and error correction capability when the user data size in a sector is 2 KB and the ECC block size is 64 KB. In FIGS. 11, 2, 5, and 6 are parity and address for error correction. While the size of pure user data excluding information and parity for address correction is maintained at 2KB per sector and ECC block size is 64KB, error correction performance can be improved over DVD based on the number of correctable data bytes. In addition, as a result of finding a data structure capable of the size of a sector including additional information in addition to 2 KB of user data from 2056 bytes to 2064 bytes, parity for error correction, address information, parity for address correction, and the like are contained in the sector structure. Located. 7 and 9 have the same sector size, sync size, inner code size, and outer code size as the DVD, and can use the ECC block structure used in the DVD. In case 9, the ID and ID correction parity are included in the sector structure, 344 bytes of data are arranged in the inner code direction, and 192 bytes of data are arranged in the outer code direction, and 2 way PI / 1 shown in FIG. It may have a physical structure as shown in FIGS. 12 and 13 that is somewhat modified from the way PO physical structure.

That is, in a structure having a first inner code parity of 10 bytes, a second inner code parity of 10 bytes, and an outer code parity of 16 bytes, Reed Solomon (RS) (182, 172, 11), which is an ECC block structure of a conventional DVD, RS (208, 192, 17) can be used as it is, and the redundancy of the sink can be reduced while expecting the same error correction capability (based on physical defects on the disk) as the DVD in the same sector size as the existing DVD. In addition, the sync redundancy of the DVD is 2.15% (= 32 bits / 1488 bits (182 bytes (internal code + internal code parity) + 32 bits (sink)), and the sync redundancy of the HD-DVD of the present invention is 1.08% ( = 32 bits / 2944 bits (= 182 bytes 2 times (internal + internal parity) + 32 bits (sink).

Therefore, when the user data size in one sector is 2 KB, there are 32 sectors twice as large as when the user data size in one sector is 4 KB. Therefore, the outer code parity of 16 rows is arranged as shown in FIG. 12 or FIG. Can be.

As shown in FIG. 12, when outer code parity (PO) corresponding to 1/2 of the entire inner code section is inserted into each sector to perform outer code column interleaving, the sector sink is indicated by a thick solid line in the sync section. Each sector sync cycle is constant. In this case, the first inner code parity and the second inner code parity PI1 and PI2 of the outer code parity interval may be obtained in a state in which the outer code parity inserted into the two sectors is combined.

As shown in FIG. 13, when the outer code parity PO of one column is inserted into the entire inner code section (two sync frame lengths) every two sectors, there are two types of sector sync cycles. That is, the sync period of the sector into which the outer code parity PO is inserted is longer than the sector sync sector.

As described above, the ECC block structure of the high-density disk according to the present invention has the effect of improving the error correction capability while maintaining the overall redundancy similar to the existing DVD. In addition, the present invention has the effect of the combined error correction capability than the DVD even if the same sector size as the DVD.

The error correction method according to the present invention has an effect of correcting an error even when the length of data of an ECC block exceeds 256 bytes, which is an error correction operation range, when performing error correction in a Galois field GF 28. have.

Claims (23)

An error correction code (ECC) block structure for a high density disk; For an internal code exceeding a predetermined error correction operation range, an internal call parity for an internal code divided into a plurality of groups within the error correction operation range is divided into the plurality of groups, and the same error correction operation is added. ECC block structure for adding the outer code parity for the outer code divided into a plurality of groups within the error correction operation range for the outer code exceeding the range divided into the plurality of groups. The ECC block structure according to claim 1, wherein the address information and the parity for address information correction are excluded from the sector structure or the pre-write physical structure in the ECC block or the ECC block. The ECC block structure according to claim 2, wherein the size of user data in the sector is 4 KB (kilobytes). . 4. An ECC block according to claim 3, having a sector size of 4104 bytes, a sink size of 152 bytes, an ECC block having an inner code size of 152 bytes and an outer code size of 432 bytes, a sector size of 4104 bytes, a sink size of 171 bytes, 171 bytes. ECC block with inner code size and outer code size of 384 bytes, sector size of 4104 bytes, sink size of 216 bytes, ECC block with inner code size of 216 bytes and outer code size of 304 bytes, sector of 4104 bytes ECC block with size, 228 byte sink size, 228 byte internal code size and 288 byte external code size, 4104 byte sector size, 171 byte sink size, 342 byte internal code size and 192 byte external code ECC block with size, sector size of 4108 bytes, sink size of 158 bytes, ECC block with internal code size of 158 bytes and external code size of 416 bytes, sector size of 4108 bytes , ECC block structure, characterized in that included in the ECC block having the outer size of 158 bytes sink size, 316 bytes and 208 bytes of internal-size of. 3. The ECC block structure according to claim 2, wherein the size of user data in the sector is 2 KB. . 6. An ECC block according to claim 5, having a sector size of 2057 bytes, a sink size of 187 bytes, an inner code size of 187 bytes and an outer code size of 352 bytes, a sector size of 2060 bytes, a sink size of 206 bytes, 206 bytes. ECC block having an inner code size and an outer code size of 320 bytes, a sector size of 2061 bytes, a sink size of 229 bytes, an ECC block having an inner code size of 229 bytes, and an outer code size of 288 bytes. ECC block structure. The ECC block structure according to claim 1, wherein the address information and the address information correction parity are included in an error correction block, a sector structure in an ECC block, or a pre-write physical structure. 8. The ECC block structure according to claim 7, wherein the user data size of the sector is 4 KB. . 9. An ECC block according to claim 8, having a sector size of 4110 bytes, a sink size of 137 bytes, an inner code size of 274 bytes and an outer code size of 240 bytes, a sector size of 4114 bytes, a sink size of 187 bytes, 187 bytes. ECC block with inner code size and outer code size of 352 bytes, sector size of 4114 bytes, sink size of 242 bytes, ECC block with inner code size of 242 bytes and outer code size of 272 bytes, sector of 4114 bytes ECC block with size, 187 byte sink size, 374 byte internal code size and 176 byte external code size, 4116 byte sector size, 196 byte sink size, 196 byte internal code size and 336 byte external code ECC block with size, sector size of 4116 bytes, sink size of 147 bytes, ECC block with internal code size of 294 bytes and external code size of 224 bytes, sector size of 4117 bytes ECC block with 179 byte sink size, 179 byte internal code size and 368 byte external code size, 4120 byte sector size, 206 byte sync size, 206 byte internal code size and 320 byte external code size ECC block with, sector size of 4122 bytes, sink size of 229 bytes, internal code size of 229 bytes and external code size of 288 bytes, sector size of 4123 bytes, sink size of 217 bytes, 217 bytes of ECC block with inner code size and outer code size of 304 bytes, sector size of 4125 bytes, sink size of 165 bytes, ECC block with inner code size of 165 bytes and outer code size of 400 bytes ECC block structure. 8. The ECC block structure according to claim 7, wherein the user data size of the sector is 2 KB. 11. An ECC block according to claim 10, having a sector size of 2064 bytes, a sink size of 172 bytes, an ECC block having an inner code size of 172 bytes and an outer code size of 384 bytes, a sector size of 2064 bytes and a sink size of 129 bytes, 258 bytes. ECC block with inner code size of 256 bytes and outer code size of 256 bytes, sector size of 2064 bytes, sink size of 172 bytes, ECC block with inner code size of 344 bytes and outer code size of 192 bytes ECC block structure. 12. The ECC block of claim 11, wherein the ECC block has a sector size of 2064 bytes, a sink size of 172 bytes, an inner code size of 172 bytes, an outer code size of 384 bytes, a sector size of 2064 bytes, a sink size of 172 bytes, An ECC block having an internal code size of 344 bytes and an external code size of 192 bytes is an ECC block structure characterized in that an ECC block structure used in a digital versatile disc (DVD) can be used as it is. In the error correction method performed in a high density disc recording and / or reproducing apparatus: (a) dividing and generating an inner code parity for the inner code divided into a plurality of groups within the error correction operation range for the inner code exceeding a predetermined error correction operation range into the plurality of groups; And (b) adding an inner code parity divided into the plurality of groups to the inner code, and adding an outer code parity of a predetermined size to the outer code to generate an error correction code (ECC) block and correcting the error; Error correction method comprising a. 15. The method of claim 13, wherein in the step (a), first inner code parity is generated for inner numbers of odd-numbered columns for the inner number, and second inner code parity is generated for inner numbers of even-numbered columns. Error correction method, characterized in that. The method of claim 14, wherein the method is (c) The first and second internal call parity are divided into two or more places with respect to the internal call interval, and the first and second internal call parity arranged in two or more places are alternately arranged in units of data lengths to make internal call parity. Interleaving rows; And (d) inserting the outer code parity line by line into the last row of each sector. The method of claim 13, wherein the method is (e) Inner code parity divided into a plurality of groups is divided into two or more places for the inner call interval, and the inner code parity is alternately arranged by alternately arranging each inner code parity of the plurality of groups arranged in two or more places. Interleaving; And and (f) inserting the outer code parity into the last row of each sector by one line. 17. The method of claim 16, wherein the size of the one sector is set to 2 KB based on user data size, and the size of one error correction block is set to 64 KB in order to increase the combined error correction capability. An outer code parity having the number of rows corresponding to one-half the number of sectors included is inserted into only one-half inner-code interval of the last row of each sector or one line every two sectors. In the error correction method performed in a high density disc recording and / or reproducing apparatus: (a) dividing and generating an outer code parity for an outer code divided into a plurality of groups within the error correction operation range for the outer code exceeding a predetermined error correction operation range into a plurality of groups; And (b) adding an inner code parity of a predetermined size to the inner code, and adding an outer code parity divided into the plurality of groups to the outer code to generate an error correction code (ECC) block and error correction; Error correction method comprising a. 19. The error correction method according to claim 18, wherein the sync codes for internal code error correction are arranged in one row at the head of the physical structure of the data. 19. The method of claim 18, wherein in the step (a), first outer code parity is generated for outer codes of odd-numbered rows for outer codes, and second outer code parity is generated for outer codes of even-numbered rows. Error correction method characterized in that. The method of claim 18, (c) column interleaving the outer code parity by inserting the outer code parity of one column of each group from sector to sector into the last row of sectors from the outer code parity divided into the plurality of groups. . In the error correction method performed in a high density disc recording and / or reproducing apparatus: (a) dividing and generating an inner code parity for the inner code divided into a plurality of groups within the error correction operation range for the inner code exceeding a predetermined error correction operation range into the plurality of groups; (b) dividing and generating an outer code parity for an outer code divided into a plurality of groups within the error correction operation range for the outer code exceeding a predetermined error correction operation range into the plurality of groups; And (c) generating an error correction code (ECC) block by adding an inner code parity divided into the plurality of groups to the inner code and adding an outer code parity divided into the plurality of groups to the outer code; Error correction method comprising the steps of error correction. The method of claim 22, wherein the method is (d) Interleaving inner code parity by arranging two or more inner code parities divided into a plurality of groups with respect to an inner code, and alternately arranging each of the inner code parities of the plurality of groups arranged in two or more positions. Doing; And (e) column interleaving the outer code parity by arranging the outer code parity of one column of each group alternately for each sector from the outer code parity divided into the plurality of groups in the last row of the sector. .