KR100952952B1 - 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). A recording frame having a predetermined recording size is recorded in the linking area corresponding to the run-out area and the run-in area of the Blu-ray Disc BD-RE, and the user data included in the recording frame is recorded as dummy data ( By recording in Dummy Data, compatibility with a rewritable Blu-ray Disc (BD-RE) can be maintained as much as possible, and the cross-talk characteristic between adjacent tracks of a playback-only Blu-ray Disc (BD-ROM) can be improved. It is a very useful invention that can minimize the degradation.

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

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.

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

9 illustrates dummy data recorded as user data in a linking area according to the present invention.

10 illustrates another embodiment of dummy data recorded as user data in a linking area according to the present invention.

11 shows another embodiment of dummy data recorded as user data in a linking area 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, a method for maintaining compatibility with the BD-RE 100 as much as possible and for allowing accurate servo operation to be performed is not yet provided. Therefore, it is urgently required to prepare a solution.

Accordingly, the present invention was created in view of the above situation, and provides a high-density reproduction-only optical disc for maintaining the maximum compatibility with a rewritable Blu-ray Disc (BD-RE) and enabling the servo operation to be performed more accurately. It is an object of the present invention to provide a linking area data recording method and a high-density reproduction-only optical disc.

Linking area data recording method of the high-density playback-only optical disc according to the present invention for achieving the above object, linking area corresponding to the run-out area and the run-in area of the rewritable Blu-ray disc of the data recording area of the high-density playback-only optical disc Recording a recording frame of a predetermined recording size, wherein the user data in each recording frame is equally recorded as dummy data having a predetermined predetermined value;

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. Recording a recording frame, wherein the user data in each recording frame is differently recorded as dummy data having a predetermined value;

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. Recording a recording frame, wherein the user data in the recording frame for each linking area is differently recorded as dummy data having a predetermined value;

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 a recording frame having a size, the user data in each recording frame is identically recorded as dummy data having an arbitrary value set in advance.

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 of size is recorded, and user data in each recording frame is differently recorded as dummy data having a predetermined value.

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 of a size is recorded, and user data in the recording frame for each linking area is differently recorded as dummy data having a predetermined random value.

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 address recorded in the scrambled state in the linking area is read out and reproduced. 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.

On the other hand, as described above, two recording frames having a predetermined recording size are recorded in the linking area of the BD-ROM 200 to maintain the maximum compatibility with the BD-RE 100, and the user data in the recording frame is shown in FIG. As shown in Fig. 9, it is possible to collectively record as dummy data of the same recording pattern in which any fixed value set in advance, for example, any fixed value such as '00' is repeated.

Accordingly, the dummy data having a fixed value is identically recorded in the recording frames in all the linking areas allocated to the BD-ROM 200. In this case, the BD-ROM 200 is manufactured. While there is an advantage that the process of authenticating is more simplified, when performing the servo operation in the optical disk device, dummy data having the same recording pattern is detected between adjacent tracks, and thus the crosstalk characteristic may be degraded. There is a drawback to this increase.

Therefore, as another embodiment according to the present invention, by recording two recording frames having a predetermined recording size in the linking area of the BD-ROM 200, while maintaining maximum compatibility with the BD-RE 100, each recording As shown in FIG. 10, the user data in the frame may have various arbitrary values, for example, various arbitrary values such as '00', '01, '10', '11', 'FF', 'AA' and the like. The data may be recorded as dummy data of different recording patterns having repeated values.

Accordingly, dummy data having random values different from each other is recorded in all recording frames in each linking area separately allocated to the BD-ROM 200. In this case, when the servo operation is performed in the optical disk device, Since dummy data of the same recording pattern is not detected between the tracks, it is possible to prevent the crosstalk characteristic from being degraded due to the user data recorded in the linking area.

On the other hand, as another embodiment according to the present invention, by recording two recording frames having a predetermined recording size in the linking area of the BD-ROM 200, while maintaining maximum compatibility with the BD-RE 100, Figure As shown in Fig. 11, different recording patterns in which user data in a recording frame is repeated for each linking area at various random values, for example, various random values such as' 00 ', '01, '11', and the like, are repeated. Each of the dummy data may be recorded as dummy data.

Accordingly, among the recording frames in each linking area allocated to the BD-ROM 200, dummy data of a recording pattern having a fixed value is identically recorded in the recording frames in the same linking area. Recording frames in which dummy data having random values different from each other are recorded are recorded between different linking areas, respectively.                     

Therefore, when the servo operation is performed in the optical disk device, dummy data of the same recording pattern is not detected between adjacent tracks, so that crosstalk characteristics can be prevented from being degraded due to user data recorded in the linking area. In addition, the process of authoring the BD-ROM 200 may be relatively simplified.

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), In the linking area corresponding to the run-out area and the run-in area of the rewritable Blu-ray Disc BD-RE, a recording frame having a predetermined recording size is recorded and user data recorded in the recording frame is piled up. By recording the data as Dummy Data, compatibility with a rewritable Blu-ray Disc (BD-RE) can be maintained to the maximum, and crosstalk between adjacent tracks of a playback-only Blu-ray Disc (BD-ROM) can be achieved. It is a very useful invention that can minimize the deterioration of properties.

Claims (30)

delete delete delete delete delete delete delete In the method of recording data on a recording medium, Creating a data area comprising at least two frames; And Connecting two neighboring data areas and generating a linking area including at least two frames of the same size; And the frame of the linking area includes frame synchronization consisting of 30 channel bits at its head position and includes data scrambled by the physical address of the preceding data area. The method of claim 8, Generating the linking region, Generating at least two frame synchronization signals in the linking area; delete The method of claim 8, Wherein the physical address is used to descramble the scrambled data. In the recording medium, A data area including at least two frames; And And a linking area connecting two neighboring data areas and including at least two frames of the same size. And the frame of the linking area includes frame synchronization consisting of 30 channel bits at its head position and includes data scrambled by the physical address of the preceding data area. The method of claim 12, The linking area includes at least two frame synchronization signals or parity data. delete The method of claim 12, The physical address is used to descramble the scrambled data. The method of claim 15, The recording medium is a Blu-ray Disc-ROM type (BD-ROM) characterized in that the recording medium. In a method of playing a recording medium, Reading a data area comprising at least two frames; And Connecting two neighboring data regions and reading a linking region including at least two frames of the same size; And the frame of the linking area contains frame synchronization consisting of 30 channel bits at its head position and includes data scrambled by the physical address of the preceding data area. The method of claim 17, Reading the linking area Detecting at least two frame synchronization signals included in the linking region. The method of claim 18, Reading the linking region, Using data associated with the preceding data area to descramble a linking area that includes the scrambled data. delete The method of claim 17, The physical address is used to descramble the scrambled data. An apparatus for reproducing a recording medium, A pickup device connecting a data area including at least two frames and two neighboring data areas and reading a linking area including at least two frames of the same size; And a controller for controlling the reproduction of the recording medium using the data read by the pickup device. And the frame of the linking area contains frame synchronization consisting of 30 channel bits at its head position and includes data scrambled by the physical address of the preceding data area. 23. The method of claim 22, Scrambler for scrambled data; further comprising,   And the scrambler scrambles the data included in a frame of the linking region by using a physical address of a preceding data region. The method of claim 8, And the dummy data of the same recording pattern is respectively recorded later than the frame synchronization of the frame of the linking area. The method of claim 8, And the frame of the linking area consists of 1932 channel bits. The method of claim 12, And a dummy data of the same recording pattern is recorded after the frame synchronization of the frame of the linking area. The method of claim 12, And the frame of the linking region consists of 1932 channel bits. The method of claim 17, And the dummy data of the same recording pattern is respectively read later than the frame synchronization of the frame of the linking area. The method of claim 17, And the frame of the linking region consists of 1932 channel bits. The method of claim 22, And said pick-up device reads out dummy data of the same recording pattern at a later stage than said frame synchronization of said at least two frames, respectively.

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