KR100576163B1 - Method for recording data on linking area of high density read only optical disc and high density read only optical disc therof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linking area data recording method of a high-density reproduction-only optical disc, and to a high-density reproduction-only optical disc. The present invention relates to a rewritable optical disc such as a reproduction-only Blu-ray disc (BD-ROM). In the linking area corresponding to the run-out area and the run-in area of the Blu-ray Disc BD-RE, a recording frame having a predetermined recording size is recorded, and user data recorded in the recording frame is recorded. By efficiently scrambled and recorded, it is possible to additionally record user data optimally for the characteristics of a playback-only Blu-ray Disc (BD-ROM) while maintaining maximum compatibility with a rewritable Blu-ray Disc (BD-RE). It is a very useful invention.

Play-only Blu-ray Disc (BD-ROM), Linking Area, Recording Frame, User Data, Scramble

Description

Linking area data recording method of high-density playback-only optical discs, and a method for recording high-density reproduction-only optical discs             

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

2 shows a recording unit block RUB of a rewritable Blu-ray Disc BD-RE,

3 shows a runout area and a run-in area of a rewritable Blu-ray Disc (BD-RE),

4 shows a data recording structure for a linking area of a reproduction-only Blu-ray disc (BD-ROM) according to the present invention;

5 schematically illustrates a scramble process of user data according to the present invention,

Fig. 6 shows a data recording structure of another embodiment for the linking area of a reproduction-only Blu-ray disc (BD-ROM) according to the present invention,

FIG. 7 schematically illustrates another embodiment of a scramble process of user data according to the present invention.

FIG. 8 shows a configuration of an optical disc apparatus for reading and reproducing data of a reproduction-only Blu-ray disc according to the present invention.

※ Explanation of code for main part of drawing

11: optical pickup 12: VDP system

13: D / A converter 100: BD-RE

200: BD-ROM

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linking area data recording method 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 capable of recording and storing high-definition video data and high-quality audio data for a long time, such as a rewritable Blu-ray disc (BD-RE: BD-Rewritable), are being developed. As shown in the drawing, the BD-RE 100 may include a clamping area, a transition area, a burst cutting area (BCA), a lead-in zone, and a data area ( Data zone), a lead-out zone, and the like.

Meanwhile, as illustrated in FIG. 2, data recorded on the BD-RE 100 may include a recording unit block (RUB) having 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.

Meanwhile, as shown in FIG. 3, 31 recording frames # 0 to # 30 are repeatedly recorded 16 times in the physical cluster area, and the run-in area of the recording unit block includes 1100 channel bits. It is divided into a Guard 1 area and a Pre-Amble area of 1660 channel bits, and in the Guard 1 area, the same 20 channel bits are used for identifying the head of a recording unit block. The pattern is repeatedly recorded 55 times, and the preamble includes a synchronization 1 (Sync_1) and a synchronization 2 (Sync_2) of 30 channel bits.

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 repeatedly recorded 27 times so that the end can be identified, and Sync_3 of 30 channel bits is recorded in the postamble.

In addition, as described above, the data recorded on the BD-RE 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 the compatibility with the BD-RE 100 is maintained, a method for efficiently recording various user data in the run-out area and the run-in area has not been prepared yet. It is true.

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-RE). It is an object of the present invention to provide a linking area data recording method of a high-density reproduction-only optical disc for recording user data more efficiently, and a high-density reproduction-only optical disc.

The linking area data recording method of the high-density reproduction-only optical disc according to the present invention for achieving the above object corresponds to a run-out area and a run-in area of a rewritable Blu-ray disc among data recording areas of the high-density reproduction-only optical disc. In the linking area, a recording frame including a synchronization, physical address, and user data of a predetermined recording size is recorded, and the user data in the recording frame is recorded in synchronization with the recording frame, physical address, or in advance. And scrambled and recorded on the basis of any set code value or address unit data in a physical cluster closest to the recording frame.

Further, the linking area data recording method of the high-density reproduction-only optical disc according to the present invention has a predetermined recording size in a linking area corresponding to a run-out area and a run-in area of a rewritable Blu-ray disc among data recording areas of the high-density reproduction-only optical disc. Records a recording frame comprising synchronization and user data, wherein the user data in the recording frame is recorded in the recording frame, or a sync set in advance or any code value set in advance, or a physical nearest to the recording frame. And scrambling and writing the data based on any one of the address unit data in the cluster,

In addition, the high-density reproduction-only optical disc according to the present invention is a high-density reproduction-only optical disc, wherein a predetermined recording is performed in a linking area 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. A recording frame composed of size synchronization, physical address, and user data is recorded, and the user data in the recording frame is recorded in the recording frame, the recorded synchronization, physical address, or any preset code value. Or is scrambled based on any one of address unit data in a physical cluster closest to the recording frame,

In addition, the high-density reproduction-only optical disc according to the present invention is a high-density reproduction-only optical disc, wherein a predetermined recording is performed in a linking area 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. In addition to recording the recording frame including the synchronization of the size and the user data, the user data in the recording frame is recorded in the recording frame included in the recording frame, or any code value set in advance, or the recording frame. And scrambled based on any one of address unit data in an adjacent physical cluster.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a linking area data recording method 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 linking area data recording method of the 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), as shown in FIG. In the BD-ROM 200, a run-out area and a run-in area continuously recorded on the BD-RE 100 are defined as a linking area between physical clusters. In the linking area, two recording frames (Recording Frame # 31, # 32) are recorded.

On the other hand, in the recording frame in the linking area, recording of 1932 channel bits in which 30 channel bits of frame sync, 9 bytes of physical address information, and 146 bytes of user data are recorded is recorded. The two recording frames recorded in the linking area have the same recording size as the 3864 channel bits in which the run-out area and the run-in area of the BD-RE 100 are added together.

In addition, various additional information may be recorded and managed in the 146 bytes of user data recorded in the recording frame. For example, unique contents such as a movie recorded in the BD-ROM 200 may 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.

The physical address information included in the recording frame may include a physical address of 4 bytes, a reserved area of 1 byte, and a parity of 4 bytes. As an embodiment of the present invention, The 4-byte physical address can be used to scramble 146 bytes of user data.

For example, the four-byte physical address (Add 0 to Add 31), as shown in Figure 5, 16-bit shift register (s 0) in the scrambler circuit (Scrambler Circuit) applied to the BD-RE (100) After parallel load in ˜s 15), a series of shift processes are performed to output 146 scrambling bytes S 0 to S 145 having a recording size of 8 bits.

In the exclusive or gate XOR, each scrambling byte S 0 to S 145 and the original user data D 0 to D 145 are logically combined to scramble the 146 bytes of user data D '0. D'145) is outputted, and 146 bytes of user data scrambled through the above process are recorded in the recording frame in the linking area.

On the other hand, as another embodiment according to the present invention, instead of the physical address, the user is recorded in the recording frame in the linking area by parallel loading the sync information recorded in the recording frame into the shift register of the scrambler circuit. You can also scramble the data.

In addition, instead of the physical address, any code value set in advance, for example, any code value of '10' is repeated, is loaded in parallel into the shift register of the scrambler circuit and recorded in a recording frame in the linking area. User data can also be scrambled.

Instead of the physical address, among the 16 address unit numbers recorded in the physical cluster before or after the linking area, the address unit data AUN_data closest to the recording frame is parallel to the shift register of the scrambler circuit. By loading, the user data recorded in the recording frame in the linking area may be scrambled.

In addition, the physical address included in the recording frame in the linking area may be recorded in a scrambled state together with the user data or in a non-scrambled state.

On the other hand, as shown in Fig. 6, only 30 channel bits of frame sync and 155 bytes of user data can be recorded in the recording frame in the linking region without 9 bytes of physical address information. In this case, however, a recording size of 1932 channel bits is obtained, and the two recording frames recorded in the linking area have the same recording size as the 3864 channel bits in which the runout area and the run-in area of the BD-RE 100 are added together. Will have

In addition, various additional information can be recorded and managed in the 155 bytes of user data recorded in the recording frame, and among the 16 address unit numbers recorded in the physical cluster before or after the linking area, the additional information can be recorded in the recording frame. The most adjacent address unit data AUN_data is loaded in parallel into the shift register of the scrambler circuit to scramble the user data recorded in the recording frame in the linking area.

For example, as shown in FIG. 7, the address unit data Add 0 to Add 31 is a 16-bit shift register s 0 to s in a scrambler circuit applied to the BD-RE 100. After parallel load in 15), it is output as 155 scrambling bytes S 0 to S 154 having a recording size of 8 bits through a series of shift processes.

In the exclusive or gate XOR, each of the scrambling bytes S 0 to S 154 and the original user data D 0 to D 154 is logically combined to scramble the 155 bytes of user data D '0. D'154) is outputted, and 155 bytes of user data scrambled through the above process are recorded in the recording frame in the linking area.

On the other hand, as another embodiment according to the present invention, instead of the address unit data, the synchronization information included in the recording frame is loaded in parallel to the shift register of the scrambler circuit, and recorded in the recording frame in the linking area. User data can also be scrambled.

In addition, instead of the address unit data, any code value set in advance, for example, any code value in which '10' is repeated, is loaded in parallel into the shift register of the scrambler circuit and recorded in a recording frame in the linking area. It is also possible to scramble the user data.

Therefore, as shown in FIG. 8, in the optical disc apparatus, which may include an optical pickup 11, a video disc play (VDP) system 12, a D / A converter 13, and the like, insertion and mounting in the apparatus When reading and reproducing the data of the BD-ROM 200, the user data recorded in the scrambled state in the linking area is read out and reproduced, and the physical address of the corresponding recording frame used for the scrambling of the user data is read. Or descrambling using the synchronization information, or using a predetermined code value or address unit data in the physical cluster closest to the recording frame, to descramble the BD-RE 100. The user data recorded on the BD-ROM can be restored and reproduced normally while maintaining the maximum compatibility.

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 linking area data recording method of the high-density reproduction-only optical disc according to the present invention and the high-density reproduction-only optical disc according to the present invention, in the process of producing a high-density reproduction-only optical disc, such as a reproduction-only Blu-ray disc (BD-ROM) A recording frame having a predetermined recording size is recorded in the runout area and the run-in area of the rewritable Blu-ray Disc BD-RE, and the user data recorded in the recording frame can be efficiently recorded. By scrambled and recorded, the user data can be additionally recorded optimally for the characteristics of the playback-only Blu-ray Disc (BD-ROM) while maintaining maximum compatibility with the rewritable Blu-ray Disc (BD-RE). It is a very useful invention.

Claims (45)

delete delete delete Among the data recording areas of the optical disc, a linking area including recording frames having a predetermined recording size is recorded between physical clusters, Scrambling and recording the recorded data in the recording frame using any one of a frame sync included in the recording frame, a predetermined code value, or address data in a physical cluster adjacent to the recording frame. Linking area data recording method of an optical disc, characterized in that. 5. The method of claim 4, wherein the recording data in the recording frame in the linking area is recorded as 155 scrambled data. delete delete delete 6. The method of claim 5, wherein the recording data in the recording frame in the linking area logically combines a scrambling byte and the original data to generate the scrambled 155 bytes of data. . 5. The method of claim 4, wherein the linking area comprises 3864 channel bits. 11. The method of claim 10, wherein the linking area comprises two equally sized recording frames each consisting of 1932 channel bits. 12. The method of claim 11, wherein each recording frame includes frame synchronization of 30 channel bits and recording data of 155 bytes. 12. The method of claim 11, wherein the linking area has a length corresponding to a runout area and a run-in area of the recordable optical disc. 5. The method of claim 4, wherein the physical cluster adjacent to the recording frame is a physical cluster before the linking area. 5. The method of claim 4, wherein the recording data in the recording frame is scrambled using address data in a physical cluster before the recording frame. 16. The optical disc of claim 15, wherein the linking area constitutes two equally sized recording frames, and the recording data of each recording frame is scrambled using address data in a physical cluster before the linking area. Linking area data recording method. 17. The method of claim 4 or 16, wherein the address data is Address Unit Numbers (AUN). 5. The linking area data of an optical disc according to claim 4, wherein the recording frame includes a physical address, and the physical address is scrambled and recorded together with the recording data, or is recorded in an unscrambled state. How to record. In the optical disc, data is recorded in units of physical clusters, and a linking area including a recording frame having a predetermined recording size is recorded between the physical recording units. The recording data in the recording frame is scrambled using any one of frame synchronization included in the recording frame, or any predetermined code value, or address data in a physical cluster adjacent to the recording frame. An optical disc, which is recorded. 20. The optical disc of claim 19, wherein recording data in the recording frame in the linking area is recorded as 155 bytes of scrambled data. 21. The optical disc of claim 20, wherein the recording data in the recording frame in the linking area is generated by the scrambled 155 bytes of data by logical combination of a scrambling byte and original data. 20. The optical disc of claim 19, wherein the linking area is composed of 3864 channel bits. 23. The optical disc of claim 22, wherein the linking area includes two equally sized recording frames each consisting of 1932 channel bits. 24. The optical disc of claim 23, wherein each recording frame includes frame synchronization of 30 channel bits and recording data of 155 bytes. 25. The optical disc of claim 24, wherein the linking area has a length corresponding to a run out area and a run-in area of a recordable optical disc. 20. The optical disc of claim 19, wherein the physical cluster adjacent to the recording frame is a physical cluster before the linking area. 20. The optical disc of claim 19, wherein the recording data in the recording frame is scrambled using address data in a physical cluster before the recording frame. 28. The optical disc of claim 27, wherein the linking area constitutes two equally sized recording frames, and the scrambling processing of the recording data of each recording frame using address data in a physical cluster before the linking area is performed. . 29. The optical disc of claim 19 or 28, wherein the address data is Address Unit Numbers (AUN). 20. The optical disc of claim 19, wherein the physical address recorded in the recording frame is recorded in the scrambled state or the unscrambled state together with the recording data. A method for reproducing an optical disc on which a linking area including a recording frame having a predetermined recording size is recorded between physical clusters, When reproducing the recording data in the recording frame, descrambling is performed using any of the frame synchronizations recorded in the recording frame, any predetermined code value, or address data in a physical cluster adjacent to the recording frame. And linking area data reproducing method of an optical disc. 32. The apparatus of claim 31, wherein the linking area includes two equally sized recording frames, each recording frame comprising 30 channel bits of frame synchronization and 155 bytes of recording data, And said descrambling process descrambles 155 bytes of recorded data contained in each recording frame. 32. The method of claim 31, wherein the physical cluster adjacent to the recording frame is a physical cluster recorded before the linking area. 34. The apparatus of claim 33, wherein the linking region comprises two equally sized recording frames, and each descrambled write data in the two recording frames is descrambled using address data in a physical cluster recorded before the linking region. Processing for linking area data of an optical disc. 35. The method of claim 31 or 34, wherein the address data is Address Unit Numbers (AUN). A method for reproducing an optical disc on which a linking area including a recording frame having a predetermined recording size is recorded between physical clusters, When reproducing the scrambled recording data in the recording frame, the data is descrambled using the data used for the scrambling processing of the recording data. The data used for the scramble process is any one of synchronization data in the recording frame, any code value set in advance, or address data in a physical cluster adjacent to the recording frame. Way. 37. The apparatus of claim 36, wherein the linking area comprises two equally sized recording frames, each recording frame comprising 30 channel bits of synchronization data and 155 bytes of recording data, wherein the descrambling process is performed on each recording frame. A method for reproducing linking area data of an optical disc, characterized by descrambling 155 bytes of recorded data. 37. The method of claim 36, wherein the physical cluster adjacent to the recording frame is a physical cluster recorded before the linking area. 39. The apparatus of claim 38, wherein the linking region comprises two equally sized recording frames, and each scrambled recording data in the two recording frames is descrambled using address data in a physical cluster recorded before the linking region. Processing for linking area data of an optical disc. 40. The method of claim 36 or 39, wherein the address data is Address Unit Numbers (AUN). An apparatus for reproducing an optical disc on which a linking area including a recording frame having a predetermined recording size is recorded between physical clusters, And a descrambling processing circuit which descrambles the scrambled recording data in the recording frame by using the data used for the scrambling processing of the recording data. The data used for the scramble process is any one of synchronization data in the recording frame, any code value set in advance, or address data in a physical cluster adjacent to the recording frame. Device. 42. The apparatus of claim 41, wherein the linking area includes two equally sized recording frames, each recording frame comprising 30 channel bits of synchronous data and 155 bytes of recording data, And said descrambling process descrambles 155 bytes of recorded data contained in each recording frame. 42. The linking area data reproducing apparatus according to claim 41, wherein the physical cluster adjacent to the recording frame is a physical cluster recorded before the linking area. 44. The apparatus of claim 43, wherein the linking region comprises two equally sized recording frames, and each descrambled write data in the two recording frames is descrambled using address data in a physical cluster recorded before the linking region. A linking area data reproducing apparatus for an optical disc, characterized in that for processing. 45. The linking area data reproducing apparatus according to claim 41 or 44, wherein the address data is Address Unit Numbers (AUN).

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