KR20040016537A - Method for recording spindle index information of high density read only optical disc and high density read only optical disc therof - Google Patents

Abstract

PURPOSE: A method for recording spindle index information of an exclusive-playing HD optical disc and the exclusive-playing HD optical disc are thereof are provided to record spindle index information of a predetermined channel bit for spindle control in run-in or run-out area of a recording unit block, thereby normally controlling the spindle servo operation of CLV(Constant Liner Velocity) in the data playing. CONSTITUTION: In a method for recording spindle index information of an exclusive-playing HD optical disc, spindle index information of a predetermined channel bit is recorded to a run-in or run-out zone included in a recording unit block for spindle servo control. A guard area 2 included in a run-out area of 1104 bit of a recording unit block is recorded with spindle index information of 40 channel bits and same patterns of 20 channel bits repeated by 25 times for distinguishing the end of the recording unit block. The spindle index information is physical address information for spindle servo control of CLV, wherein same spindle index information of 20 channel bits are repetitively recorded twice and detected by a predetermined frequency in an optical disc player.

Description

Method for recording spindle index information of a high-density reproduction-only optical disc, and a method for recording a high-density reproduction optical disc according to the present invention {Method for recording spindle index information of high density read only optical disc and high density read only optical disc therof}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recording spindle index 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 at the rear of one recording unit block composed of a (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 run-out 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 in the Guard 2 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.

On the other hand, in the BD-RW 100, wobble type physical address information for searching or randomly accessing a data recording position or the like is pre-recorded. The wobble type physical address information includes a wobble of a low frequency component. It is detected as a signal, and is used for a spindle servo operation of a constant linear velocity (CLV) method. In an optical disc recorder or the like, a wobble signal of the low frequency component is detected and checked during a data recording operation or a reproduction operation. The linear servo spindle is normally operated.

Recently, development and standardization of high-density reproduction-only optical discs, such as a reproduction-only Blu-ray disc (BD-ROM), have been discussed among related companies. Such high-density reproduction-only optical discs have physical address information in the form of a wobble. Since is not separately recorded, since it is impossible to control the spindle servo operation of the linear speed system normally, it is urgently required to prepare an efficient solution.

Therefore, the present invention was created in view of the above-described circumstances, and on a high-density reproduction-only optical disc such as a reproduction-only Blu-ray disc (BD-ROM), a linear speed ( It is an object of the present invention to provide a spindle index information recording method and a high-density reproduction-only optical disc for performing a CLV) spindle servo operation normally.

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),

4 shows a runout area included in a recording unit block of a reproduction-only Blu-ray disc (BD-ROM) according to the present invention;

FIG. 5 schematically shows a configuration of an optical disc apparatus for playing a reproduction-only Blu-ray disc (BD-ROM) according to the present invention.

Fig. 6 shows a run-in area included in a recording unit block of a reproduction-only Blu-ray disc (BD-ROM) 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-RW

200: BD-ROM

Spindle index information recording method of the high-density reproduction-only optical disc according to the present invention for achieving the above object, the spindle index information for the spindle servo control of the high-density reproduction-only optical disc, having a recording size corresponding to the error correction block unit Recording in a runout area or a run-in area in the recording unit block with a predetermined channel bit,

Further, the high-density reproduction-only optical disc of the present invention is a high-density reproduction-only optical disc in which data is recorded in a recording unit block corresponding to one error correction block unit. The spindle index information of a predetermined channel bit for spindle servo control is recorded.

Hereinafter, a preferred embodiment of the spindle index information recording method of the high-density reproduction-only optical disc and the high-density reproduction-only optical disc according to the present invention will be described in detail with reference to the accompanying drawings.

First, the spindle index information recording method of the high-density reproduction-only optical disc according to the present invention can be applied to a process of manufacturing a reproduction-only Blu-ray disc (BD-ROM), which is described above with reference to FIG. 1. As described above, the electronic device may be partitioned into a clamping region, a transition region, a burst cutting region, a lead-in region, a data region, a lead-out region, and the like.

In addition, as described above with reference to FIG. 2, the data recorded on the BD-ROM may be partitioned into a recording unit block (RUB) having a predetermined recording size corresponding to one error correction block (ECC Block) unit. In this case, in the guard 2 area of the runout area of the 1104 channel bits included in the recording unit block, as shown in FIG. 4, spindle index information of 40 channel bits and the end of the recording unit block are shown. The same pattern of 20 channel bits is recorded 25 times in order to make it possible to identify.

Meanwhile, the spindle index information of the 40 channel bits is physical address information for the spindle servo control of the linear speed method, and the spindle index information of the same 20 channel bits may be repeatedly recorded twice, and the spindle index information may be an optical disc. The player detects the signal as a predetermined frequency.

For example, when the BD-ROM is a BD-ROM corresponding to 23G class, one recording unit block (RUB) records 962676 channel bits X 80 nm = 0.077 m, or 962136 channel bits X 80 nm = 0.07687 m. Since the linear velocity is 5.28 m / s, which corresponds to the data read speed, the spindle index information recorded in the recording unit block is detected at a period of 0.014583 sec divided by about 0.077 m divided by 5.28 m / s. It is detected as a low frequency signal of Hz.

On the other hand, when the BD-ROM is a BD-ROM corresponding to 27G class, one recording unit block (RUB) may record a recording size of 962676 channel bits X 69 nm = 0.0664 m, or 962136 channel bits X 69 nm = 0.06638 m. Since the linear velocity corresponding to the data reading speed is 5.28 m / s, the spindle index information recorded in the recording unit block is detected at a time of 0.0125 sec divided by about 0.066 m by 5.28 m / s. It is detected as a low frequency signal.

On the other hand, since general channel bit data is detected as a high frequency signal of about 66 MHz, an optical disc player including an optical pickup 11, a VDP system 12, a D / A converter 13, and the like as shown in FIG. The spindle index information having a low frequency component of 68.571 Hz or 80.0 Hz as described above is obtained from a high frequency of about 66 MHz. It is possible to accurately detect and distinguish from the normal channel bit data having the component.

On the other hand, the spindle index information may be recorded in the guard 1 of the run-in area in the recording unit block in 40 channel bits, in this case, the guard 1 of the run-in area of the 2760 channel bits included in the recording unit block. In the region, as shown in FIG. 6, spindle index information of 40 channel bits and the same pattern of 20 channel bits for identifying the head of the recording unit block can be repeatedly recorded 54 times. .

Further, the spindle index information of the 40 channel bits is physical address information for the spindle servo control of the linear speed method, and the spindle index information of the same 20 channel bits may be repeatedly recorded twice, and the spindle index information may be an optical disc. In a player or the like, it is detected as a predetermined frequency signal, for example, a low frequency signal of 68.571 Hz or 80.0 Hz.

Therefore, in the optical disc player or the like, when the BD-ROM 200 is inserted and seated in the device, a 40-channel bit spindle read out from the guard 2 or the guide 1 of the run-in area recorded in the recording unit block. After detecting the index information to confirm the physical recording position of the BD-ROM 200, the spindle speed servo operation of the linear speed method corresponding to the recording position can be normally performed.

For reference, the spindle index information may be read and used for another purpose other than the spindle servo control operation as information corresponding to physical address information of the optical disc.

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 spindle index information recording method of the high-density reproduction-only optical disc constructed and constituted as described above, and the high-density reproduction-only optical disc according to the above, is an error correction block (ECC Block) on a high-density reproduction-only optical disc such as a reproduction-only Blu-ray disc (BD-ROM). Data is recorded in units of a recording unit block (RUB) of a predetermined recording size corresponding to the unit, and in a run-out area or a run-in area of the recording unit block, a predetermined channel for spindle control In addition to recording the spindle index information of the bits, the optical disc player or the like reads and confirms the spindle index information when performing a reproducing operation, and enables to control the spindle servo operation of the linear velocity (CLV) method normally. It is a useful invention.

Claims (6)

A high-density reproduction-only optical disc, wherein the spindle index information for spindle servo control of the high-density reproduction-only optical disc is recorded in a runout area or a run-in area in a recording unit block having a recording size corresponding to an error correction block unit in a predetermined channel bit. To record spindle index information The method of claim 1, And the spindle index information is repeatedly recorded twice by 20 channel bits in the guide of the run-out area or the guard of the run-in area. The method of claim 1, And said spindle index information is recorded as physical address information of an optical disk for spindle servo control in a linear speed system. In a high-density reproduction-only optical disc in which data is recorded in a recording unit block corresponding to one error correction block unit, The spindle index information of a predetermined channel bit for spindle servo control is recorded in a runout area or a run-in area included in the recording unit block. The method of claim 4, wherein The spindle index information is repeatedly recorded twice by 20 channel bits in the guard of the runout area or the guard of the run-in area. The method of claim 4, wherein And the spindle index information is recorded as physical address information of the optical disk for spindle servo control of the linear speed method.