KR100706472B1 - Method for recording data in optical disc player - Google Patents

Abstract

The present invention relates to a data recording method of an optical disc player, and when the optical disc is inserted into the optical disc player, the type of the optical disc is inserted, an OPC (Optimum Power Calibration) process is performed, Write data to the disk, but go through a recording stop process with a preset waiting time, RF scan the first recording address section, which is the next recording address section, in the waiting time, and if the first recording address section is determined to be a defective area, After registering the address period in the defect management list, the process jumps to the second recording address section and repeats the defect area determination process. If the defect area is not detected in the first recording address section, data is recorded from the subsequent recording address section. It is done. According to the present invention, by recording the data in the optical disk player by using the waiting time generated after performing the initial OPC, the defective area according to the disk reflectivity of the area to be recorded is identified in advance, and then the data is selectively recorded to improve the recording stability. There is an effect that can be maximized.

OPC, RF Scan

Description

Data recording method of optical disc player {METHOD FOR RECORDING DATA IN OPTICAL DISC PLAYER}

1 is a schematic block diagram of an optical disc player for implementing a data recording method according to the present invention;

2 is a flowchart of a data recording process of the optical disc player according to the preferred embodiment of the present invention.

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

10 optical disc 11: spindle motor

20: optical pickup 30a: digital recording signal processing unit

30b: digital reproduction signal processor 40: optical drive unit

50: RF unit 60: drive unit

70: servo unit 80: control unit

90: EEPROM

TECHNICAL FIELD The present invention relates to a control technique of an optical disc player, and more particularly, to a data recording method of an optical disc player which is suitable for recording data by minimizing a defective area efficiently.

In a typical optical disc player, an Optimal Power Calibration (OPC) operation is performed in a power calibration area (PCA) set on an inner circumferential side of the optical disc, thereby detecting an optimal power for an inserted optical disc, that is, the PCA. Predetermined test data is recorded in the control unit, and the optimum power and the corresponding reflection level (B-level) are detected from the reproduction characteristics of the recorded test data.

On the other hand, when recording data using the detected optimal power, the recording power is appropriately adjusted through a ROPC (Running OPC) operation, that is, the reflection level detected by the OPC operation and the reflection level continuously detected during the recording operation. The recording operation is performed while appropriately adjusting the recording power so that (the level of the signal reflected by the recording light) becomes equal to each other.

However, the above-mentioned ROPC operation is possible only for the drive that rotates and drives the disc in the CLV (constant linear speed) method. Therefore, in the case of the drive that rotates and drives the disc in the CAV (constant angular speed) method, the ROPC operation is performed during data recording. Since the recording is maintained while maintaining the optimum power detected on the inner circumferential side of the optical disk without adjusting the recording power through it, the recording quality on the outer circumferential side is greatly deteriorated in the case of a deformed disk such as bending in the outer circumferential direction or a disk having a manufacturing defect. There is a problem.

As such, the ROPC method is not applied to some optical disc players because many solutions are not adopted because power change is sensitive to the disc condition.

However, when such a ROPC method is not used, if a defective area is encountered during recording, the recording stops and the recording waits for a predetermined time, for example, 2 to 3 seconds until the recordable area comes out. This is generally caused because the transmission speed of the RF signal is slower than the recording speed.

The present applicant has focused on recording data more efficiently and stably if an optical disc player in which such a ROPC method is not employed can utilize the waiting time generated after performing a general OPC to detect a disk defect.

SUMMARY OF THE INVENTION The present invention is based on the above-described concept, and the data is selectively recorded after grasping the defective area according to the disk reflectivity of the area to be recorded using the waiting time generated after performing the initial OPC when recording the data in the optical disk player. It is an object of the present invention to provide a data recording method of an optical disc player that can maximize recording stability.

According to a preferred embodiment of the present invention for achieving the above object, as an optical disk player data recording method, when the optical disk is inserted into the optical disk player, to determine the type of the inserted optical disk and to perform the OPC process And recording data on the optical disc according to a recording request of a user, performing a recording stop process having a preset waiting time, and RF scanning a first recording address section, which is a next recording address section, in the waiting time. Determining whether the first recording address section is a defective area; and if the first recording address section is determined to be a defective area, registering the first recording address section in a defect management list and then recording a second recording address. Repeating the defect area determination process by jumping to a section; If the address period, a defective area is detected, there is provided a data recording method for an optical disk player, comprising the step of writing data from the write address period of the subsequent.

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

1 is a schematic block diagram of an optical disc player for implementing a data recording method according to the present invention, which includes a spindle motor 11, an optical pickup 20, a digital recording signal processing unit 30a, and a digital reproduction signal processing unit ( 306, an optical driver 40, an RF unit 50, a driver 60, a servo unit 70, a controller 80, and an EEPROM 90.

As shown in the figure, the optical pickup 20 records a signal on the optical disc 10 in accordance with the light amount driving signal of the optical driver 40, and also serves to detect the recording signal from the recording surface.

The digital recording signal processing unit 30a adds an error correction code (ECC) or the like to the input digital data to convert it into a recording format, and the digital reproduction signal processing unit 306 applies the binary signal provided from the RF unit 50 described later. Each of the phase-locked clocks restores the binary signal to the original data.

The optical driver 40 outputs a light quantity driving signal according to the input signal, and the RF unit 50 serves to output a binary signal by shaping the signal detected by the optical pickup 20.

The driving unit 60 drives the optical pickup 20 and the spindle motor 11, and the servo unit 70 controls the tracking error signal and the focusing error signal of the optical pickup 20 and the rotational speed of the optical disk 10. It serves to control the driving of the drive unit 60 from.

The control unit 80 serves to control the overall configuration of the optical player, and in particular, the control unit 80 performs the OPC of the optical disc 10 according to the present embodiment, and at the time when data recording is stopped, the optical disc Scan the next recording section (10) to detect the defect area in advance, and if the defect is detected, register the recording section information in the defect management list and control the servo unit 70 or the like to jump to the next recording section. . The defect detection and section jumping process is repeatedly performed until no defect of the corresponding optical disc 10 is detected. In this case, defect detection may be implemented through the above-described RF unit 50, the digital reproduction signal processor 30b, and the like.

The EEPROM 90 temporarily stores defect area information of the optical disc 10 determined by the controller 80, that is, recording address section information in which a defect is detected. The defect information stored in the EEPROM 90 is then referred to by the control unit 80 when the optical disc 10 is reproduced and used to skip the corresponding defect area.

Hereinafter, with reference to the above-described configuration, the data recording process of the optical disc player according to the preferred embodiment of the present invention will be described in detail with reference to the flowchart of FIG.

As shown in FIG. 2, in step S200, the controller 80 determines whether an optical disc is inserted, and when the optical disc is inserted, the controller 80 proceeds to step S202 and types of inserted optical discs. Determine and perform the initialization process of the recordable disc.

Thereafter, the controller 80 proceeds to step S204 to perform an OPC process. This OPC process is an optimal power detection process applied to a general optical disc player, and since it has already been mentioned in the prior art, a detailed description thereof will be omitted.

Thereafter, the controller 80 goes through a process of recording data according to a user's request for recording (S206). In general, since the transmission speed of the RF signal is lower than the recording speed, the controller 80 performs a predetermined time, for example, an HQ method. In the case of going through a process of waiting for 2 to 3 seconds.

During this waiting time, the controller 80 proceeds to step S210 to perform RF scan on the next write address section (first write address section).

After performing step S210, the controller 80 proceeds to step S212 to determine whether the write address section is a defective area. This defect area determination detects when the RF level drops to a specific value or more during a blank area scan in a servo-on situation, and such a technical implementation is well known in the art. If you grow up, you will easily know.

If it is determined in step S212 that the write address section is determined to be a defective area, the controller 80 proceeds to step S214 and registers the write address section in the defect management list. Such defect management lists may be tabled in the EEPROM 90.

After performing step S214, the controller 80 proceeds to step S216 and jumps to the next write address section (second write address section). This process is repeated until no defect occurs in the write address section.

On the other hand, if the defect area is not detected as a result of the determination in step S212, the controller 80 proceeds to step S218 and performs a process of recording data from a subsequent write address section.

Thereafter, when a recording end is requested by the user or by an external interrupt (S220), the controller 80 ends the process.

As described above, the present invention implements to selectively record the defective area according to the disk reflectivity of the area to be recorded by using the waiting time generated after performing the initial OPC at the time of recording the data in the optical disc player, and then selectively record the data. It is.

As mentioned above, although this invention was demonstrated concretely based on the Example, this invention is not limited to such an Example, Of course, various deformation | transformation are possible for it within the technical idea and the scope of a claim mentioned later.

According to the present invention, by recording the data in the optical disk player by using the waiting time generated after performing the initial OPC, the defective area according to the disk reflectivity of the area to be recorded is identified in advance, and then the data is selectively recorded to improve the recording stability. There is an effect that can be maximized.

Claims (4)

As a data recording method of an optical disc player, When the optical disc is inserted into the optical disc player, determining the type of the inserted optical disc and performing an OPC process; Recording data on the optical disc according to a recording request of a user, and performing a recording stop process having a preset waiting time; RF scanning a first write address section which is a next write address section in the waiting time; Determining whether the first recording address section is a defective area; If the first recording address section is determined to be a defective area, repeating the defect area determination process by registering the first recording address section in a defect management list and jumping to a second recording address section; If a defective area is not detected in the first recording address section, recording data from a subsequent recording address section; Data recording method of the optical disk player comprising a. The method of claim 1, The waiting time is 2 seconds to 3 seconds in the HQ method. The method of claim 1, The determining of the defective area may include determining a defective area by detecting when an RF level falls below a specific value when scanning a blank area in a servo-on state of the optical disc player. How to record data. The method of claim 1, And repeating the defective area determination process is performed until no defect occurs in a recording address section.

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