KR100627520B1 - Method for managing navigation information in optical disc device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of managing navigation information in an optical disc apparatus. The present invention relates to a method for managing navigation information in an optical disc, for example, by recording data on an optical disc such as a recordable DVD-R, etc. In addition, in the nonvolatile memory, if the data recording operation is stopped and updated, the flag indicating whether or not to stop normally is stored in association with the disk ID, and the disk ID read out from the information area of the disk when the optical disk is inserted is stored in the device. After confirming that the data is stored in the nonvolatile memory, the flag value associated with the disk ID is searched in the nonvolatile memory, and when the data recording is abnormally stopped, the last recording position information stored in the nonvolatile memory is searched. By searching, the data record is abnormal It stops, or even if the information area of the disc, a defect, with reference to the last recording position information stored in the nonvolatile memory, and is very useful inventions are capable of performing data recording or reproducing function properly with.

DVD recorder, navigation information, disc ID, last recording position, flag, information area

Description

Method for managing navigation information in optical disc device}             

FIG. 1 illustrates an exemplary embodiment in which navigation information is recorded on a general write once DVD-R.

2 illustrates a configuration of an optical disk device to which the present invention is applied.

3 illustrates an embodiment in which navigation information is recorded and managed in a nonvolatile memory according to the present invention;

4 and 5 are flowcharts illustrating operations of a navigation information management method in an optical disk apparatus according to the present invention.

※ Explanation of code for main part of drawing

10: optical disc 11: optical pickup

12: VDR system 13: micom

14: OSD generator 15: information generator

16: memory

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of managing navigation information in an optical disc apparatus, and for example, during recording of data onto an optical disc such as a DVD-R that can be recorded once, abnormally recording operation is stopped, or Even if a defect occurs in the information area, the present invention relates to a navigation information management method in an optical disk device for allowing the last recording position of a disk to be searched normally.

Generally, optical discs capable of recording and playing back high-definition video data and high-quality audio data, such as digital versatile discs (DVDs), are widely used and are used for playback-only DVDs (DVD-ROMs). ), Write once DVDs (DVD-R, DVD + R), and rewritable DVDs (DVD-RW, DVD + RW, DVD-RAM).

On the other hand, in the DVD recorder (DVD-Recorder) that can record or play data on the DVD as described above, for example, when the data recording operation is performed while the DVD-R is inserted and seated in the apparatus, FIG. As shown in Fig. 1, MPEG format data is recorded in the data area of the DVD-R.

In addition, when the data recording operation is stopped, the last recording position information, for example, NWA # 1 (Next Write Address # 1) information, is allocated to an information area, for example, that is located in front of the lead-in area of the DVD-R. Recording management is performed as navigation information in the RMA (Record Management Area) area.

When data is recorded on the DVD-R again, after recording new data from the last recording position with reference to the NWA # 1 information, if the data recording operation is stopped, the last recording position information, for example, Since NWA # 2 information is recorded and managed as navigation information in the RMA area, another new data can be recorded continuously from the last recording position.

However, when a defect such as a scratch or a spot occurs in the RMA area where the last recording position information is recorded and managed as described above, the last recording position cannot be searched and referenced normally. In addition, when the data recording operation is abnormally stopped due to a power failure or the like, the last recording position information cannot be properly recorded and managed in the RMA area, thereby causing a fatal problem in that new data cannot be continuously recorded from the last recording position. do.

Therefore, the present invention was created to solve the above problems, and for example, in an optical disc device such as a DVD-Recorder, data is recorded on an optical disc such as a DVD-R or the like which can be written once. In this case, the last recording position of the disk, the disk ID, and a flag indicating whether the data recording is normally stopped are recorded and managed in the nonvolatile memory in the device as navigation information, so that data recording is abnormally stopped or the information on the disk is recorded. Provides a navigation information management method in an optical disc apparatus for retrieving and recording the last data recording position information recorded in the nonvolatile memory even if a defect occurs in the area, so that new data can be continuously recorded from the last recording position. There is a purpose.

The navigation information management method in the optical disk apparatus according to the present invention for achieving the above object comprises the steps of: confirming the last recording position of the disk while performing a data recording operation; Updating and recording the checked last recording position information in the nonvolatile memory together with the disc identification information; And in the case where the data recording operation is stopped, storing the identification information indicating whether to stop normally in association with the disc identification information.

In addition, the navigation information management method in the optical disk device according to the present invention comprises the steps of: checking whether the disk identification information read out from the information area of the disk is already stored in the nonvolatile memory in the device; Retrieving a flag value stored in association with the disc identification information in the nonvolatile memory, if it is stored; And by the retrieved flag value. In the case where the data recording is abnormally stopped, the method may include three steps of referring to the last recording position information stored in association with the disc identification information in the nonvolatile memory.

Hereinafter, a preferred embodiment of a navigation information management method in an optical disk apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

First, the navigation information management method according to the present invention can be applied to not only a DVD recorder but also various other types of optical disk devices. For example, the DVD recorder may have an optical disk 10 as shown in FIG. ), An optical pickup 11, a VDR (Video Disc Record) system 12, a microcomputer 13, an OSD generating unit 14, an information generating unit 15, a memory 16, and the like.

On the other hand, the memory 16, a nonvolatile memory such as a flash memory is used, the microcomputer 13, when performing a data write operation in response to a user's request, the VDR system 12 Operation control to record MPEG format data in the data area of the optical disc 10, for example, DVD-R.

When the data recording operation is stopped, the last recording position information, for example, NWA # information, is recorded and managed as navigation information in the information area, for example, the RMA area, allocated in front of the lead-in area of the DVD-R. In this case, the microcomputer 13 performs the above-described series of operations, and as shown in FIG. 3, the disc ID Disc_ID, the last recording position NWA #, and the data recording. A flag (Finish_Flag) indicating whether to stop normally is recorded and managed in the memory 16 as navigation information.

In the microcomputer 16, even if data recording stops abnormally or a defect occurs in the information area of the disk, the microcomputer 16 searches for the navigation information recorded and managed in the memory 16, so that the new data is recorded in the last recording position. From the normal recording can be continued, which will be described in detail as follows.

4 and 5 are flowcharts illustrating operations of the navigation information management method in the optical disk apparatus according to the present invention. For example, in the DVD recorder, the DVD-R 10 is inserted into a user's computer. In response to the request, when data is recorded (S10), in the microcomputer 13, when a predetermined time set in advance has elapsed (S11), for example, at a predetermined time period set near to real time, After searching and confirming the last recording position, the memory 16 updates and records the last recording position information (for example, NWA # 1).

On the other hand, as shown in Fig. 3, the last recording position information is stored in association with a unique disc ID (eg, Disc_ID # 1) recorded and managed in the RMA area of the DVD-R (S12), and then data recording. When the operation is stopped (S13), the microcomputer 13 determines whether it is a normal recording stop (S14). For example, if it is a normal data recording stop at the user's request, '0' indicates a normal stop. The end flag (Finish_Flag = 0) of the value 'is stored in association with the disc ID (eg, Disc_ID # 1) recorded and managed in the memory 16.

On the other hand, if it is determined that abnormal data recording stops, the end flag (Finish_Flag = 1) of '1' indicating abnormal stop is associated with a disc ID (eg, Disc_ID # 1) recorded and managed in the memory 16. It is stored (S16).

For example, when the user ejects the DVD-R 10 and then inserts it into the apparatus again as shown in FIG. 5 (S30), in the microcomputer 13, The disk ID recorded in the RMA area of the DVD-R 10 is searched (S31), and the disk IDs stored in the memory 16 are compared with each other.

On the other hand, when the same disc ID (eg, Disc_ID # 1) exists in the memory 16 (S32), the microcomputer 13 searches for and confirms the end flag value stored in association with the disc ID (S33). As a result of the check, when the end flag value has a value corresponding to '0' (S34), in the microcomputer 13, the DVD-R 10 determines that the data recording operation is normally stopped. (S35).

Then, the last recording position information recorded in the RMA area of the DVD-R is searched or referred to, or the last recording position information recorded in the memory 16 is referred to (S36). In the case of having a value corresponding to '1', the microcomputer 13 determines that the DVD-R 10 is a disc whose data recording operation is abnormally stopped (S37). In this case, the memory 16 In step S38, the corresponding recording position information recorded in the reference information is searched and performed by the user (S39).

Accordingly, even when data recording is abnormally stopped, it is possible to search and refer to navigation information recorded and managed in the memory 16 so that new data can be continuously recorded normally from the last recording position, and also the RMA area of the DVD-R. Even if a defect occurs and the last recording position information is not retrieved, it is possible to search and refer to the navigation information recorded and managed in the memory 16 so that new data can be normally recorded continuously from the last recording position.

For reference, the present invention can be applied not only to a DVD recorder but also to various other optical disk devices, and also to the DVD-R as well as various other optical disks.

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 navigation information management method in the optical disk apparatus according to the present invention constructed and constructed as described above, for example, checks the last recording position of the disk while recording data on an optical disk such as a recordable DVD-R or the like. In the non-volatile memory along with the disk ID, and when the data recording operation is stopped, the flag indicating whether to stop normally is stored in association with the disk ID and the disk ID read out from the information area of the disk when the optical disk is inserted. After confirming that the data is already stored in the nonvolatile memory in the device, and searching for the flag value stored in association with the disk ID in the nonvolatile memory, when the data recording is abnormally stopped, the last stored in the nonvolatile memory Search location information by searching Even if data recording stops abnormally or a defect occurs in the information area of the disc, it is a very useful invention that the data recording operation or the reproduction operation can be normally performed by referring to the last recording position information stored in the nonvolatile memory. .

Claims (7)

Confirming the last recording position of the disk while performing a data recording operation; Updating and recording the checked last recording position information in the nonvolatile memory together with the disc identification information; And And storing the identification information indicating whether the data recording operation is stopped normally in association with the disc identification information in the nonvolatile memory. The method of claim 1, And the last recording position checking operation is repeated at a predetermined time period set in advance. The method of claim 1, And the disc identification information is a disc ID recorded and managed in an information area of the disc. The method of claim 1, When the data recording operation is normally stopped, the last recording position information is recorded at the same value in the information area of the disc and the nonvolatile memory, whereas when the data recording operation is abnormally stopped, the last recording position information is recorded at different values. A navigation information management method for an optical disk device. 1 step of confirming whether the disc identification information read out from the information area of the disc is already stored in the nonvolatile memory in the apparatus; Retrieving a flag value stored in association with the disc identification information in the nonvolatile memory, if it is stored; And By the retrieved flag value. In the case where the data recording is abnormally stopped, the method may include three steps of recording new data from the last recording position corresponding to the last recording position information stored in association with the disc identification information in the nonvolatile memory. Navigation information management method in an optical disk device. The method of claim 5, And if it is not stored, referring to the last recording position information recorded in the information area of the disc, recording new data from the last recording position corresponding thereto. Navigation information management method. delete

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