KR20070110671A - Method for safely recovering recorded data in a dvd system - Google Patents

Abstract

A method for recording data stably on an optical disc in a DVD recording and reproducing system is provided to record the data stably on the new optical disc whose MID information is not registered or on the optical disc whose error generating rate is high. A method for recording data stably on an optical disc in a DVD recording and reproducing system includes a step of receiving a data recording request on the optical disc loaded in the DVD system(S302,S304); a step of reading MID information of the optical disc when receiving the data recording request(S306); a step of checking a presence of the MID information of the loaded optical disc at the MID information registered at the DVD system in advance(S308); and a step of recording the data recording-requested to the optical disc on an HDD first when the MID information of the optical disc is not presented at the MID information pre-registered on the DVD system(S310,S316).

Description

TECHNICAL FOR SAFELY RECOVERING RECORDED DATA IN A DVD SYSTEM}

1 is a diagram illustrating a conventional disc recording / playing disc structure;

2 is a schematic block diagram of a DVD recording / playback system to which an embodiment of the present invention is applied;

3 is a flowchart of a stable data recording operation on an optical disc in a DVD recording / playback system according to an exemplary embodiment of the present invention.

<Brief description of the major symbols in the drawings>

200: DVD disc 202: pickup portion

204: SLM 206: SPM

208: motor drive unit 210: RF unit

212: Servo unit 214: DSP unit

216: microcomputer 218: video decoder

220: audio decoder 222: HDD recording / playback unit

224: key input unit 226: memory unit

228: HDD

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital versatile disk (DVD) recording / playback system, and more particularly, to a more stable data recording method onto a new optical disk with no MID information registered or an optical disk with high error rate when recording data in a DVD recording / playback system. will be.

In general, a DVD recording / reproducing system refers to a device for reproducing and displaying data recorded on an optical disc such as a DVD or HD-DVD, in which data of a higher density is recorded than a CD, and is produced to be reproduced in a DVD recording / reproducing system. The DVD title can be recorded at a higher density than the CD, and has various functions as compared to the conventional video media by various additional data as well as image quality.

On the other hand, the recording area arrangement of the above DVD recording / playback discs is divided into a power calibration area (PCA), a program memory area (PMA), a data-in area, a data area, and the like. Here, the PCA is an area for calibrating the laser recording power for recording data on the disk, and the PMA has head address information of the track on which data is recorded in the program area. In addition, the data-in area records file structure-related information and position information of the data stored in the data area on the disk, and the actual data to be recorded on the disk is recorded in the data area.

In recording data on a disc for a DVD recording / playback system as described above, it is conventionally read by reading MID information on a disc to check whether it is a disc of a registered firmware company, and in the case of a disc of a registered firmware company, referring to the MID information. Recording is performed. In the case of an unregistered new disk, there is no information corresponding to the disk, and thus recording is performed in a general manner.

However, in the case of recording data on a new non-registered disc, there is no registered MID information, so the DVD system cannot be optimal for recording the disc. Accordingly, there is a high risk of recording failure, and especially in the case of broadcast recording, there is a problem such that the lost data cannot be recovered when recording fails.

That is, as shown in the DVD recording / playback disc structure shown in FIG. 1, data is recorded in the data area 104 for a predetermined time during recording, and the data-in area 102 located at the innermost circumference of the disc 100. Data recording information such as recording file structure or location information of recorded data is stored and read during playback.In case of new disc, recording fails because there is no MID information about the disc registered in DVD system. There was a problem that occurred.

Accordingly, it is an object of the present invention to provide a more stable data recording method onto a new optical disc in which MID information is not registered when recording data in a DVD recording / reproducing system or an optical disc having a high error occurrence rate.

The present invention for achieving the above object is a stable data recording method on an optical disc in a DVD recording / playback system, comprising the steps of: (a) receiving a data recording request on an optical disc loaded on the DVD system; Reading MID information of the optical disc upon receiving a recording request; (c) checking whether MID information of the loaded optical disc exists in MID information registered in advance in the DVD system; and (d) If the MID information does not exist in the MID information registered in advance on the DVD system, the data requested to be recorded on the optical disk is first recorded on the HDD, and then the method is further directed to later backup.

The present invention also provides a stable data recording method on an optical disc in a DVD recording / playback system, comprising the steps of: (a ') reading MID information of the optical disc upon receiving a data recording request onto an optical disc loaded on the DVD system; Checking whether MID information of the loaded optical disc exists in MID information registered in advance in the DVD system; and (c ') if the MID information of the optical disc does not exist in the registered MID information. Recording the requested data to the HDD first, and then inducing a backup later; and (d ') recording a predetermined amount of data onto the optical disc when the MID information of the optical disc exists in the registered MID information. Checking the error occurrence rate by performing an operation and (e ') if an error exceeding a reference value occurs in a predetermined amount of recorded data on the optical disc. Following recording the first recording the requested data to the disk in the HDD, characterized in that it comprises the step of induction to back at a later date.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

2 is a schematic block diagram of a DVD recording / playback system to which an embodiment of the present invention is applied. Hereinafter, the operation of the DVD recording / playback system will be described in detail with reference to FIG. 2.

First, the pick-up unit 202 incorporates an actuator for focusing and tracking, and reads a recording signal from the DVD recording / playback disc 200.

The sled motor (SLM) 204 moves the pickup section 202 to an arbitrary position on the DVD recording / playback disk 200. The spindle motor (SPM) 206 drives the DVD recording / reproducing disk 200 in rotation. The RF unit 210 converts the high frequency optical signal output from the pickup unit 202 into an electrical binary signal by filtering the filter, extracts the servo signal and modulated data for performing the servo, and applies the extracted signal to the servo unit.

The digital signal processor (DSP) unit 214 is a clock that is phase-locked to the binary signal applied from the RF unit 210, and restores the binary signal to the original compressed data, and then divides it by data type and connects the video to the rear end. The video decoder 218 and the audio decoder 220 are applied to each.

The video decoder 218 and the audio decoder 220 decode the compressed video / audio data applied from the DSP unit 214 and convert the compressed video / audio data into an image and an audio signal.

The motor drive unit 208 applies the appropriate driving voltage to the spindle motor 206 under the control of the servo unit 212 to drive the DVD disc 200 in rotation, and to the thread motor 204. The pickup unit 202 is moved by applying an appropriate driving voltage. The servo unit 212 receives information necessary for servo control from the RF unit 210 to control the driving of the motor drive unit 208 to perform stable servo.

The memory unit 226 stores various operation program data necessary for the operation of the microcomputer 216, and temporarily stores data generated according to the operation of the microcomputer 216.

The key input unit 224 includes a plurality of numeric keys and function keys for controlling the operation of each part of the DVD system. The key input unit 224 generates corresponding key data and inputs it to the micom 216 when a user inputs a key.

The HDD recording / reproducing unit 222 converts an image data signal input under the control of the microcomputer 116 into a hard disk recording format and records the same on the HDD 228, and backs up data to the optical disk media in the DVD loader. At the time of reproduction for -up), binary data read from the HDD 228 is restored to video data and applied to the optical disk media in the loader.

The microcomputer 216 controls the overall operation of the entire DVD system and controls the DSP unit 214, the RF unit 210, and the pick-up unit 202 according to a user's key input. Data is recorded on the disk 200 or data is reproduced from the DVD recording / playback disk 200.

In addition, the microcomputer 216 searches for MID information of the loaded disc and checks whether the MID is registered in the DVD system according to the embodiment of the present invention. By guiding the recording to be performed first, the recording failure due to the disk error is prevented as much as possible.

FIG. 3 shows a more stable data recording processing flow onto a new optical disc in which MID information is not registered or an optical disc of high error rate when data is recorded in a DVD recording / reproducing system according to an exemplary embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 2 and 3.

First, when the power is turned on by the user, the microcomputer 216 of the DVD recording / playback system enters the standby mode in step S300, and when the optical disc 200 for recording or playback in the loading unit is loaded ( In step S302, the loading of the optical disc 200 is recognized.

When the optical disc 200 is loaded as described above, when the user wants to record a broadcast signal or the like on the optical disc, the user inputs a recording command on the optical disc through the key input unit 224.

Then, when there is a data recording key input on the optical disc 200 from the user, the microcomputer 216 recognizes the data recording request in step S304, and proceeds to step S306 to read MID information about the loaded optical disc. Check it. The MID information includes characteristic information of an optical disk input by a company that manufactures the optical disk. The DVD system stores MID information for each manufacturer and optimizes data recording on the disk using the corresponding MID information.

At this time, if the MID information of the loaded optical disc does not exist in the MID information registered in advance in the DVD system, the microcomputer 216 determines that the loaded optical disc is a new disc in which the MID information is not registered in step S308. In operation S310, data such as a broadcast signal or the like, which is required to be recorded, is first recorded on the HDD 228 in order to prevent a recording failure, and then the user is guided to back up the data onto an optical disc later.

However, when the MID information of the loaded optical disc is present in the MID information registered in advance in the DVD system, the microcomputer 216 determines the loaded optical disc 200 as the disc in which the MID information is registered in step S308. In operation S312, a predetermined amount of data is recorded on the optical disc 200. The predetermined amount of data recording as described above is to prevent data failure on the optical disc 200 by double checking whether the data occurs more than a reference value even when the MID information is registered.

Next, the microcomputer 216 checks the error occurrence rate of the predetermined amount of recorded data on the optical disk in operation S314 and determines that the disk has a high probability of recording failure when an error exceeding a reference value occurs in the predetermined amount of recorded data. In step S310, as in the case of data recording on a new optical disk on which the MID information is not registered, data such as a broadcast signal or the like that is requested to be recorded is first recorded on the HDD 228 in order to prevent a recording failure, and later on the optical disk. It will guide the user to back-up.

However, in contrast, if an error of more than a reference value does not occur in a predetermined amount of data recorded on the optical disc in step S314, the microcomputer 216 proceeds to step S316 to normally perform data recording on the loaded optical disc. .

As described above, in the present invention, in the method of recording data on an optical disc in a DVD recording / reproducing system, when data is recorded onto a new optical disc having MID information not registered in the system, it is possible to prevent data recording failure such as a broadcast signal required for recording. In order to record the data on the HDD first, it is recommended to backup the data onto the optical disk.In case of data recording on the optical disk on which the MID information is registered, a certain amount of data is recorded to prevent data recording failure on the optical disk when an error occurs above the reference value. For this reason, as in the case of recording on a new optical disk with MID information unregistered, it is induced to record on the HDD first, thereby minimizing data recording failure on the optical disk.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the claims rather than by the described embodiments.

As described above, in the present invention, in the method of recording data on an optical disc in a DVD recording / reproducing system, data recording such as a broadcast signal required for recording is required when data is recorded onto a new optical disc having MID information not registered in the system. In order to prevent failure, the data is first recorded on the HDD, and then a backup is performed on the optical disk. When data is recorded on the optical disk on which the MID information is registered, a certain amount of data is recorded so that an error occurs more than the reference value. In order to prevent recording failure, there is an advantage of minimizing data recording failure on the optical disc by inducing to first record on the HDD as in the case of recording on a new optical disc with MID information not registered.

Claims (3)

As a stable data recording method on an optical disc in a DVD recording / playback system, (a) receiving a data recording request on an optical disc loaded in the DVD system; (b) reading MID information of the optical disc upon receiving the data recording request; (c) checking whether MID information of the loaded optical disc exists in MID information registered in advance in the DVD system; (d) if the MID information of the optical disc does not exist in the MID information registered in advance on the DVD system, first recording the data requested to be recorded on the optical disc into the HDD and then inducing a backup later; Stable data recording method on an optical disc in a DVD recording / playback system comprising a. As a stable data recording method on an optical disc in a DVD recording / playback system, (a ') reading MID information of the optical disc upon receiving a data recording request on the optical disc loaded in the DVD system; (b ') checking whether the MID information of the loaded optical disc exists in the MID information registered in advance in the DVD system; (c ') if the MID information of the optical disc does not exist in the registered MID information, first recording the data requested to be recorded on the optical disc into the HDD, and then inducing a backup later; (d ') checking the error occurrence rate by recording a predetermined amount of data on the optical disc when the MID information of the optical disc is present in the registered MID information; (e ') in the case where an error of more than a reference value occurs in the predetermined amount of recorded data on the optical disk, recording the data requested to be recorded on the optical disk first to the HDD, and then inducing a backup later; Stable data recording method on an optical disc in a DVD recording / playback system comprising a. The method of claim 2, (F ') normally recording data on the loaded optical disc when no error occurs over a reference value in the predetermined amount of recorded data on the optical disc in step (d'). Stable data recording method on an optical disc in the DVD recording / playback system characterized in that it further comprises.

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