KR100663407B1 - How to support fast finalization of optical discs - Google Patents

Abstract

A method for supporting fast finalization of an optical disk is provided to be capable of recording null data from an opposite direction for a section where a VTS(Video Title Set) of the disk is recorded, in a system standby state when a functional operation of an optical disk device is not conducted, in case that finalization for the dual-layer optical disk is performed, thus a user does not have to wait for a long time during finalization operation afterwards. If one VTS is generated in a recording section of a dual-layer optical disk by recording a particular program(S10), a microcomputer decides whether an optical disk device is capable of conducting a preliminary finalization operation(S11). If so, the microcomputer decides whether a non-recording section of data which requires a null data recording process exists on the disk(S12). If so, the microcomputer carries out an operation of recording null data in an opposite direction to a direction of the section where the VTS is recorded(S13).

Description

QUICKLY FINALIZE SUPPORT METHOD FOR OPTICAL DISC}

1 is a view showing a finalized state of a general dual layer optical disc;

2 is a diagram showing the configuration of an optical disk apparatus to which a method for supporting rapid finalization of an optical disk according to the present invention is applied;

3 is a diagram illustrating a state in which a null data recording operation is performed in a reverse direction with respect to a video title set (VTS) recording section direction of a dual layer optical disc according to the present invention;

4 is a view showing navigation information in which information on a progressive recording state of null data for finalization is recorded and managed according to the present invention;

5 is a flowchart illustrating an operation of a method for supporting rapid finalization of an optical disc according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: dual layer optical disc, 20: optical pickup,

30a: digital recording signal processing section, 30b: digital reproduction signal processing section,

40: channel bit encoder, 41: optical driver,

50: RF signal processing unit, 60: servo unit,

61: servo drive unit, 80: microcomputer.

The present invention relates to a method for finalizing an optical disc, and more particularly, to rapidly finalize an optical disc for finalizing a data unrecorded section of a dual layer optical disc. It is about how to support rise.

As is well known, an optical recording medium capable of recording or reproducing an information signal on a recording medium by an optical scanning method has been developed and commercialized according to the necessity of semi-permanently recording and accumulating video and audio information. The ROM is classified into a ROM type developed for read-only, a Worm type that can be written only once, and a rewritable type that can record information repeatedly.

Here, the ROM type optical record medium is represented by a digital versatile disc read only memory (DVD-ROM), and the worm type optical record medium is a recordable digital versatile disc (DVD-R). A typical rewritable optical recording medium is a rewritable digital versatile disc (DVD-RW, DVD-RAM, DVD + RW).

As a variety of optical recording media, digital multi-function discs have a data storage capacity of 2.6 gigabytes (G bytes) to 4.7 gigabytes when only one side of the disc is used as a recording layer. Dual-layer digital multifunction discs with a double recording layer on one side of the disc for significantly increased storage capacity, allowing different information to be recorded on each recording layer at different wavelengths of optical power. Is developed and commercialized.

On the other hand, in such a digital multi-function disc, video and audio signals input from an external source such as an external digital television broadcast tuner or a camcorder through an optical disc device are encoded in an MPEG-2 format, for example, in accordance with a DVD format, and the encoded signals are encoded. Navigation information that allows audio and video data to be recorded in one Data Title Set (VTS) unit in a data area, and controls reproduction of the video title set (VTS). It generates and records management in the navigation information area.

At this time, in order to enable initial access without error in a playback-only DVD player with a video title set (VTS) recorded on the digital multifunction disc, null data (Null) is recorded in the remaining unrecorded section in which no data is recorded. In the case of a normal single-layer disc, null data can be stored only up to 8 cm from the inside of the disc in consideration of the disc accessibility of the DVD optical disc device for reproduction only. It is possible to record.

On the other hand, in the case of the dual-layer digital multifunction disc, as shown in FIG. 1, the entire recording layer is recorded for the entire double layer section in which the video title set (VTS) is not recorded according to the characteristic of the double layer structure. Overall null data is recorded. This is because it is unknown at which position of the optical pickup of the playback-only DVD player to adjust the servo characteristics from the RF signal of the second layer.

Accordingly, although it is necessary to record and finalize null data for the entire unrecorded section in which data is not recorded in the second layer, it takes a long time to record null data for the entire unrecorded section for finalization. There is a problem that adds to the inconvenience to the user.

Accordingly, the present invention has been made to solve the above-described conventional problems, and an object thereof is to allow the finalization preliminary operation for the data unrecorded section of the dual layer optical disk to be performed gradually in a waiting time other than the functional operation of the apparatus. It provides a way to support the rapid finalization of optical discs.

In order to achieve the above object, according to the present invention, there is provided a method for performing a preliminary operation for finalizing an optical disk on which data is recorded, the method comprising: determining whether a system is in a standby state in which no functional operation is performed; If it is determined that the status is, it provides a method for supporting rapid finalization of the optical disc, characterized in that the step of recording null data in the data unrecorded section of the optical disc.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

2 is a diagram showing the configuration of an optical disk apparatus to which the finalizing method of the optical disk according to the present invention is applied.

As shown in FIG. 1, the optical disk apparatus according to the present invention irradiates each recording layer of the dual layer optical disk 10 having a double layer structure with a laser beam having a predetermined recording power to record data or dual layer from reflected light of the laser light. An optical pickup 20 for reading out a signal recorded on the optical disc 10, a digital recording signal processor 30a for adding an error correction code (ECC) to the input digital data and converting it into a recordable data format, and the dual layer A digital reproduction signal processor 30b for restoring and outputting a binary signal reproduced from the optical disc 10 to original video / audio data, and a channel bit encoder 40 for reconverting the data converted into the recordable format into a bit stream. And an optical driver 41 for outputting a light quantity driving signal according to the bit stream signal to the optical pickup 20 and the optical pickup 20. By the RF signal processing unit 50 for filtering the signal from the dual layer optical disk 10 and outputting it as a binary signal, the focusing error signal FE and the tracking error signal TE from the optical pickup 20 are used. The rotation of the spindle motor 62 is controlled by the focusing / tracking servo of the optical pickup 20, the servo unit 60 for controlling the rotational drive of the dual layer optical disc 10, and the servo operation of the servo unit 60. The microcontroller 80 performs a control to perform a finalizing operation for a data unrecorded section of the dual layer optical disk 10 in a standby state in which the servo driver 61 performs various function operations on the corresponding optical disk device. It consists of.

The microcomputer 80 may operate various functions of the device, that is, recording data, playing data recorded on the dual layer optical disk 10, pausing during recording or playback, ejecting the disk, and the like. In the operation standby state of the system that is not generated, null data for finalization may be gradually recorded on the dual layer optical disc 10 until the release of the operation standby state.

As shown in Fig. 3, the microcomputer 80 records the null data for the finalization of the dual layer optical disc 10 in the reverse direction with respect to the direction of the recording section in which the video title set VTS is recorded. For example, when the video title set (VTS) is recorded from a data area starting from the lead-in area of the lower recording layer of the dual recording layer, the null data is read out of the upper recording layer. Starting from the lead-out area (S31), the recording can be performed gradually.

Meanwhile, in the microcomputer 80, null data is recorded in the data unrecorded section of the dual layer optical disc 10 in the standby state of the system as shown in FIG. 3, and a predetermined function operation of the corresponding device is performed to perform finalization. When the null data recording operation is stopped or null data is recorded in the entire unrecorded period, the recording position information or null data recording completion state of null data for finalization is recorded in the navigation information.

As shown in Fig. 4, in the data structure of the navigation information, when the optical disc generates and records the " RTR_VMGI Table " which is the navigation information defined in the " DVD VR " standard, " RTR_VMGI " (Video) of the " RTR_VMGI Table " Manager Information) generates and records "VMGI_MAT" (Video manager Information Management Table) corresponding to the management table of video management information and "PL_SRPT" (Play List Search Pointer Table) corresponding to the playlist search pointer table. In addition to having various information values for managing video management information, the " VMGI_MAT " has a reserved area of 152 bytes separately.

The microcomputer 80 records the recording position information of the null data for the finalization or the fact that the null data has been recorded in the reserved area reserved in the "VMGI_MAT", and the finalizing operation is performed by the system standby state. In a possible state, null data is gradually recorded subsequently with reference to the information recorded in the spare area.

Next, Fig. 5 is a flowchart for explaining the operation of the finalizing method of the optical disc according to the present invention.

Hereinafter, a flowchart according to an embodiment of the present invention shown in FIG. 5 will be described in detail in parallel with the operation of the apparatus of FIG. 2.

First, when one video title set (VTS) is generated in a recording section of a disc by recording a specific program on the dual layer optical disc 10 (step S10), the microcomputer 80 indicates that the corresponding optical disc device is an optical disc 10. It is determined whether or not the system is in the system standby state in which the finalization preliminary operation is possible (step S11).

As a result of the determination, when it is determined that the system is in the standby state and the finalization period is possible, the invalid data recording position information of the reserved area provided in the "VMGI_MAT" of the navigation information is read from the dual layer disk 10, It is judged whether there is an unrecorded section of data for which null data recording is required on the optical disc 10 (step S12).

As a result of the determination, if it is determined that there is an unrecorded section of data for which null data is required to be recorded on the dual layer optical disk 10, the optical disk 10 is reversed in the direction of the section in which the video title set VTS is recorded. Starting from the last data area, an operation of recording null data is performed (step S13).

In this state, the microcomputer 80 determines whether or not it is a situation in which null data recording should be stopped by performing a predetermined function operation on the corresponding device and releasing the system standby state (step S14). When it is determined that the situation is to be stopped, the recording operation of the invalid data is stopped halfway, and the positional information on which the null data is finally recorded is recorded in the spare area provided in "VMGI_MAT" of the navigation information (step S15).

On the other hand, the microcomputer 80 is then able to repeatedly proceed to the step S11 to perform the steps from step S12 to step S15.

Next, when it is determined in step S12 that there is no unrecorded section of data for which null data recording is required, that is, when information indicating that all null data is recorded in the unrecorded section is recorded in the spare area, the finalize preliminary operation is performed. Is completed (step S16).

After all of the null data is recorded in the unrecorded section as described above, when the user requests finalization to play the recorded disc on the playback-only disc player, the track information recorded in the PMA area is copied to the lead-in area. The finalization operation is terminated by performing only an operation of generating an out area.

On the other hand, the present invention is not limited to the above-described typical preferred embodiments, but can be carried out in various ways without departing from the gist of the present invention, various modifications, alterations, substitutions or additions are common in the art Those who have knowledge will easily understand. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

According to the present invention as described above, when finalizing the dual-layer optical disc on which video data is recorded, for a section in which the video title set of the disc is recorded in the system standby state in which the function operation of the optical disc device is not performed. By recording null data from the opposite direction, it is possible to provide convenience to the user since the user does not wait a long time during the subsequent finalization operation.

Claims (7)

In the method for performing a preliminary operation for finalizing an optical disk on which data is recorded, A first step of determining whether the system is in a standby state in which no functional operation is performed; And if it is determined that the system is in a standby state, a second step of writing null data in a data unrecorded section of the optical disc. The method of claim 1, And said optical disc is a dual layer optical disc having a dual recording layer. The method of claim 1, And wherein said second step is configured to record null data from the reverse direction of a section in which data of said optical disc is recorded. The method of claim 2 or 3, In the second step, the null data is gradually recorded in the direction opposite to the data recording section of the one recording layer from the other recording layer opposite to the one recording layer on which the data of the dual layer optical disc is recorded. How to support rapid finalization. The method of claim 1, And the second step further comprises stopping the null data recording operation halfway when the system standby state is released and a specific function operation is performed. The method according to claim 1 or 5, And wherein said second step is configured to record and record the recording position information of null data by completing the writing of the null data or stopping the middle of recording of the null data. The method of claim 6, And recording position information of the null data is recorded and managed in a reserved area of a video management information management table (VMGI_MAT) of optical disc navigation information.

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