KR100957798B1 - Method for recording additional information of high density read only optical disc and high density read only optical disc therof - Google Patents

Abstract

The present invention relates to a method for recording additional information of a high-density reproduction-only optical disc, and a high-density reproduction-only optical disc according to the present invention. A recording frame having a predetermined recording size is alternately recorded in a specific recording section corresponding to a run-out area and a run-in area of a rewritable Blu-ray Disc BD-RW, and the recording frame By applying the error correction processing for the rewritable Blu-ray Disc (BD-RW) by selecting the method used in a rewritable Blu-ray Disc (BD-RW), the playback-only Blu-ray Disc (BD) Optimized for the characteristics of ROM, various additional information such as copy protection or servo control information can be efficiently recorded. It will be very useful inventions.

Play-only Blu-ray Disc (BD-ROM), run-out area, run-in area, recording frame, physical address information, user data, error correction processing

Description

A method for recording additional information of a high density reproduction-only optical disc, and a method for recording a high density reproduction-only optical disc according thereto {Method for recording additional information of high density read only optical disc and high density read only optical disc therof}             

1 shows the structure of a rewritable Blu-ray Disc (BD-RW),

Fig. 2 shows a recording unit block RUB of a rewritable Blu-ray Disc BD-RW,

3 shows a run-in area, run-out area and guide 3 area included in a recording unit block of a rewritable Blu-ray Disc (BD-RW),

Fig. 4 shows the structure of a recording frame which is alternatively recorded in a recording unit block of a reproduction-only Blu-ray disc (BD-ROM) according to the present invention.

5 and 6 illustrate an error correction processing procedure for a recording frame including additional information recorded by the present invention.

7 illustrates a process of generating a recording frame including additional information recorded according to the present invention.                 

8 shows a recording process for physical address information in a recording frame in which additional information is recorded according to the present invention,

9 illustrates an error correction processing process for physical address information according to the present invention.

FIG. 10 shows a configuration of an optical disc apparatus for playing a reproduction-only Blu-ray disc (BD-ROM) according to the present invention.

Fig. 11 shows address information in a recording frame to be recorded alternately according to the present invention.

[Description of Drawings]

10: Scrambler 11: Adder

51: optical pickup 52: VDP system

53: D / A converter 100: BD-RW

200: BD-ROM

The present invention relates to a method for recording additional information of a high-density reproduction-only optical disc such as a reproduction-only Blu-ray Disc Read Only (BD-ROM) and a high-density reproduction-only optical disc.

Recently, new high-density optical discs, such as rewritable Blu-ray discs (BD-RW), capable of recording and storing high-definition video data and high-quality audio data for a long time, are being developed. As shown in FIG. The BD-RW 100 may include a clamping area, a transition area, a burst cutting area (BCA), a lead-in zone, a data zone, It is divided into a lead-out zone and the like.

On the other hand, the data recorded in the BD-RW 100, as shown in Figure 2, recording unit block (RUB: Recording Unit Block) of a predetermined recording size corresponding to one error correction block (ECC Block) unit The compartment is recorded.

For example, if only one recording unit block is recorded with temporal continuity, a run-in area of 2760 channel bits, a physical cluster area of 958272 channel bits, and a runout of 1104 channel bits A guard 3 area of 540 channel bits is allocated and recorded after the one recording unit block composed of the (Run-Out) area.

On the other hand, when a plurality of recording unit blocks are recorded with temporal continuity, one guide 3 area is allocated and recorded after a plurality of recording unit blocks are continuously recorded, and the guide 3 area is the next after the end of the recording. The data to be recorded is to be prevented in advance from being overwritten with previously recorded data.

On the other hand, the run-in area of the recording unit block is divided into a Guard 1 area of 1100 channel bits and a Pre-Amble area of 1660 channel bits, as shown in FIG. In the region 1, the same pattern of 20 channel bits is repeatedly recorded 55 times so that the head of the recording unit block can be identified.

The runout area of the recording unit block is divided into a post-amble of 564 channel bits and a Guard 2 area of 540 channel bits, and the guard unit area of the recording unit block. The same pattern of 20 channel bits is recorded 27 times in order to be able to identify the end.

In the guard 3 area, the same pattern of 20 channel bits for recognizing the end of data recording is repeatedly recorded 27 times, whereby the head and end of the recording unit block and the end of recording are recorded in an optical disc recorder or the like. Can be identified.

In addition, as described above, the data recorded on the BD-RW 100 includes physical address information for randomly accessing a recording unit block (RUB) corresponding to one error correction block unit. For example, an address unit number (AUN) is recorded and recorded. Since the address information is recorded after being modulated and encoded together with the A / V data, the address unit number (AUN) is distributedly recorded in the physical cluster area within the recording unit block.

On the other hand, the development and standardization of high-density reproduction-only optical discs such as a reproduction-only Blu-ray disc (BD-ROM) has been discussed among related companies, and a data recording structure that is optimal for the characteristics of the reproduction-only Blu-ray disc, eg For example, while maintaining compatibility with the BD-RW 100, a method for more efficiently recording various additional information such as copy protection information or servo control information is provided. Since it is not prepared yet, the solution is urgently required.

Accordingly, the present invention was created in view of the above-described circumstances, and is intended for high-density reproduction-only optical discs such as a reproduction-only Blu-ray disc (BD-ROM) while maintaining maximum compatibility with a rewritable Blu-ray disc (BD-RW). It is an object of the present invention to provide an additional information recording method of a high density reproduction-only optical disc for efficiently recording various additional information such as copy protection or servo control information, and a high density reproduction-only optical disc accordingly.

The additional information recording method of the high-density playback-only optical disc according to the present invention for achieving the above object comprises a specific recording section corresponding to a runout area and a run-in area of a rewritable Blu-ray disc among data recording areas of the high-density reproduction-only optical disc. And alternately recording the recording frame having a predetermined recording size, and recording any additional information in the user data recorded in the recording frame.

In addition, in the high-density reproduction-only optical disc of the present invention, in the high-density reproduction-only optical disc, a specific recording section corresponding to a run-out area and a run-in area of a rewritable Blu-ray disc among data recording areas in which recording unit blocks are recorded, is predetermined. Characterized in that a recording frame having a recording size is recorded alternately,

Further, the additional information recording method of the high-density reproduction-only optical disc according to the present invention is characterized in that, in the data recording area of the high-density reproduction-only optical disc, a predetermined recording size is specified in a specific recording section corresponding to a runout area and a run-in area of a rewritable Blu-ray disc. In addition to recording the recording frame having a recording, the address information of the physical cluster recorded before or after the recording recording frame is recorded in the recording frame.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of a method for recording additional information of a high density reproduction-only optical disc and a high density reproduction-only optical disc according to the present invention will be described in detail with reference to the accompanying drawings.                     

First, the method for recording additional information of a high-density reproduction-only optical disc according to the present invention can be applied to a process of authoring a reproduction-only Blu-ray disc (BD-ROM). Particularly, the BD-ROM 200 includes: As shown in FIG. 4, two recording frames (Recording Frame # k + 1, # k +) are provided in a run-out area and a run-in area continuously recorded on the BD-RW 100. As shown in FIG. 2) is recorded alternatively.

On the other hand, in one recording frame, 30 channel bits of sync, 9 bytes of physical address information, 114 bytes of user data, and 32 bytes of parity are recorded. Since the 1932 channel bits have a recording size, the two recording frames have the same recording size as the 3864 channel bits, which is a recording size obtained by adding the runout area and the run-in area of the BD-RW 100.

In addition, various additional information can be recorded and managed in the 114-byte user data recorded in the recording frame. For example, unique contents such as a movie recorded in the BD-ROM 200 can be recorded. In addition, copy protection information for preventing any third party from illegal copying may be additionally recorded, or navigation information of various optical discs for servo control or the like may be additionally recorded.

As shown in Fig. 5, in the recording frame, 93 bytes are recorded in 9 bytes of physical address information except for synchronization of 30 channel bits, 114 bytes of user data, and 32 bytes of parity. After adding dummy data having a size, error correction processing (ECC Processing) is performed. In this case, RS (248,216,) used in a Long Distance Code (LDC) block of the BD-RW 100 is performed. 33) Apply error correction processing.

On the other hand, at least one to 30 recording frames that have undergone the error correction processing of the RS (248, 216, 33) method as described above, as shown in Figures 5 and 6, RS (62, 30, 33) Error correction processing is performed again. The error correction processing of the RS (62, 30, 33) method is an error correction processing applied to the BIS (Burst Indicating Subcode) block of the BD-RW 100.

For example, as shown in FIG. 5, when RS 62, 30, 33 type error correction processing is performed on one recording frame # K + 1 having a recording size of 155 bytes. After adding 155 bytes of dummy data by 29 rows and adding 155 bytes of parity by 32 rows, the RS (62, 30, 33) method of error correction processing is performed. do.

As shown in Fig. 6, error correction processing of RS (62, 30, 33) method is performed for 30 recording frames (Recording Frame # K + 1 to # Z + 2) having a recording size of 155 bytes. In this case, 155 bytes of parity are added by 32 rows, and the RS (62, 30, 33) method of error correction processing is performed.

Meanwhile, the recording frame as described above may be generated by the scrambler 10 and the adder 20 as shown in FIG. 7, for example, in the scrambler 10. By scrambling 114 bytes of user data such as copy protection information using 9 bytes of physical address information, the DSV (Digital Sum Value) detected when performing the servo control operation becomes a minimum value close to zero. Then, 9 bytes of physical address information is added to the head of the scrambled user data.

In addition, the adder 20 adds 20 channel bits of synchronization to the front end of the physical address information output through the scrambler 10, and adds 32 to the rear end of the user data output through the scrambler 10. By adding a parity of bytes, one recording frame is generated.

Therefore, 114 bytes of user data scrambled by 9 bytes of physical address information are recorded and recorded in the recording frame. For reference, the user data is another arbitrary information other than 9 bytes of physical address information. It may be scrambled by.

On the other hand, as shown in Fig. 8, the 9-byte physical address information recorded in each of the two recording frames is, as a first embodiment, the address unit number (the physical unit of the physical cluster recorded nearest to the rear end of the recording frames). AUN # k + 1) can be recorded, and also as a second embodiment, the address unit number (AUN #k) of the physical cluster recorded nearest to the front of the recording frames can be recorded.

In the third embodiment, the physical address information of the recording frame recorded at the beginning of the two recording frames includes the address unit number (AUN # k) of the physical cluster recorded nearest to the front end of the recording frame. In addition, among the two recording frames, as for the physical address information of the recording frame recorded at the rear end, the address unit number (AUN # k + 1) of the physical cluster recorded nearest to the rear end of the recording frame may be recorded.

In addition, as shown in FIG. 9, the nine-byte physical address information is composed of four bytes of address information, one byte free area, and four bytes of parity. RS (9,5,5) type of error correction processing is used.

Therefore, as shown in FIG. 10, in the optical disc apparatus including the optical pickup 51, the VDP (Video Disc Play) system 52, the D / A converter 53, and the like, the BD-ROM 200 is used. ) Is a physical address in a recording frame (Recording Frame # k + 1, # k + 2) additionally recorded in a recording unit block (RUB) in the data recording area of the BD-ROM 200 when The information and the user data can be more accurately read and confirmed, and in particular, the user can perform a series of operations corresponding to the various additional information such as copy protection information or servo control information additionally recorded as user data.

FIG. 11 shows address information in a recording frame to be alternately recorded according to the present invention, wherein first and second recording frames alternately recorded on the BD-ROM 200 (Recording Frame # k + 1, ## k). In the +2), as described above, 9 bytes of physical addresses are included and recorded, and among the 9 bytes of physical address information, 4 bytes of addresses are recorded before or afterwards as shown in FIG. Address information of the cluster, for example, four bytes of address information distributed and recorded in 16 address unit numbers (AUN 0 to 15: Address Unit Numbers 0 to 15) can be copied and recorded.

On the other hand, the four-byte address distributed in the physical cluster recorded before the first recording frame is divided into four bits (0000 to 1111) and 'to indicate the order of the address unit numbers, as shown in FIG. One bit, i.e., 5 bits (00000 to 11110) having a value of 0 'is recorded in the remaining 3 bytes and 3 bits, and address information of the same value is recorded in one physical cluster.

In addition, an address of 4 bytes distributed in the physical cluster recorded after the second recording frame is also similarly 4 bits for indicating the order of the address unit numbers and 1 bit, i.e., 5 bits (with '0' values). The remaining 3 bytes and 3 bits except 00000 to 11110 are recorded, and the same address information is recorded in one physical cluster.

The address information of 4 bytes included in the first recording frame is recorded, and the address information of the physical cluster recorded before can be recorded. For example, as shown in FIG. 11, the nearest record is recorded. 3 bytes and 3 bits of address information corresponding to the 16th address unit number (AUN 15) and a bit value of '11110' may be recorded, and a '0' value of the last bit among the '11110' bit values may be recorded. The change recording is made with a value of '1' so that the address information is not the address information recorded in the physical cluster but the address information recorded in the replacement recorded recording frame.

In addition, the address information of 4 bytes included in the second recording frame is recorded, and the address information of the physical cluster recorded thereafter may be recorded. For example, as shown in FIG. 11, the nearest record is recorded. 3 bytes and 3 bits of address information corresponding to the first address unit number (AUN 0) and a bit value of '00000' may be recorded, and a '0' value of the last bit among the '00000' bit values may be recorded. The change recording is made with a value of '1' so that the address information is not the address information recorded in the physical cluster but the address information recorded in the replacement recorded recording frame.

In addition, a value of '00000' may be recorded in the last five bits of the address information recorded in the first recording frame, and the last five bits in the address information recorded in the second recording frame may be '11110'. The value may be recorded.

In addition, as described above with reference to FIG. 8, address information of any one physical cluster among physical clusters recorded before or after may be recorded in the first and second recording frames, respectively.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The additional information recording method of the high-density reproduction-only optical disc and the high-density reproduction-only optical disc according to the present invention constituted and constituted as described above, produce a high-density reproduction-only optical disc such as a reproduction-only Blu-ray disc (BD-ROM) (Authoring). In the process, the recording frame having a predetermined recording size is alternately recorded in a specific recording section corresponding to the run-out area and the run-in area of the rewritable Blu-ray Disc BD-RW. By applying the error correction processing for the recording frame to the method used in the rewritable Blu-ray Disc (BD-RW), it is possible to play-only blue while maintaining maximum compatibility with the rewritable Blu-ray Disc (BD-RW). Optimal for the characteristics of the BD-ROM, and various additional information such as copy protection or servo control information Very useful inventions that can be recorded to.

Claims (23)

In the method of playing an optical disc for high density reproduction, Reading a recording area of the optical disc; And Recognizing two recording frames having a recording size of 1932 channel bits, which are alternately recorded in a specific recording section corresponding to the runout area and the run-in area of the rewritable Blu-ray Disc; Read frame sync consisting of 30 channel bits at the beginning of each recording frame, and read scrambled data at the rear end of the frame sync to address information related to the data frame of the nearest recorded physical cluster where data before the recording frame is recorded. And data descrambling according to the method. delete delete delete delete The method of claim 1, And descrambling the scrambled data recorded in the two recording frames using address numbers associated with the data frames of the adjacent recorded physical clusters. . The method of claim 1, And reading out dummy data from the two recording frames. The method of claim 7, wherein In the reading of the dummy data, the dummy data is read from a rear end of the frame sink. delete delete delete delete Among the recording areas of the high-density reproduction-only optical disc, two recording frames having a recording size of 1932 channel bits are alternately recorded in a specific recording section corresponding to the runout area and the run-in area of the rewritable Blu-ray disc, A frame sync consisting of 30 channel bits is recorded at the head of each recording frame, and scrambled data is scrambled according to address information associated with a data frame of the nearest recorded physical cluster in which data before the recording frame is recorded. An optical disc for high-density reproduction, characterized by being recorded at the rear end of the sink. The method of claim 13, And the dummy data are recorded in the two recording frames. 15. The method of claim 14, And the dummy data is recorded at a rear end of the frame sync. delete delete delete delete An apparatus for reproducing high density reproduction-only optical discs, A pickup device for reading a recording area of the optical disc; And Recognizing two recording frames having a recording size of 1932 channel bits, which are alternately recorded in a specific recording section corresponding to a runout area and a run-in area of a rewritable Blu-ray Disc using the data read by the pickup device, the pickup The device reads a frame sync consisting of 30 channel bits at the beginning of each recording frame, reads scrambled data at the rear end of the frame sync, and the data frame of the nearest recorded physical cluster where data before the recording frame is recorded; And a controller for descrambling in accordance with related address information. The method of claim 20, And the controller descrambles the scrambled data recorded in the two recording frames using an address number associated with the data frame of the adjacent recorded physical cluster. The method of claim 20, And said pick-up device reads dummy data from said two recording frames. 23. The method of claim 22, And said pick-up device reads out said dummy data from a rear end of said frame sink.

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