JP2005100558A - Optical disk device and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrain useless writing in a PCA by efficiently executing OPC. <P>SOLUTION: This optical disk device is provided with a control means for deciding the PW1 of a laser beam and Tβ for evaluation according to an optical disk, obtaining β1 indicating the result of a test record based on the PW1, deciding PW2 different from the PW1 when the β1 is not included in a predetermined range including the Tβ, obtaining β2 indicating the result of a test record based on the PW2, deciding PW3 based on the PW1 and the β1 and the PW2 and the β2 when the β2 is not included in the predetermined range, deciding new PW3 by replacing the PW2 with the PW1, the PW3 with the PW2, the β2 with the β1 and the β3 with the β2 when the β3 indicating the result of the test record based on the PW3 is not included win the predetermined range, and for evaluating the test record on the basis of the newly decided PW3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an optical disc apparatus and a control method thereof.

  In recent years, write once type write-once optical discs (CD-R media, DVD ± R media, etc.) have become popular as recordable optical discs. In this write-once optical disc, OPC (Optimum Power Control) based on the asymmetry value β is always performed prior to actual recording. In OPC, after recording predetermined test data in a PCA (Power Calibration Area) of an optical disc, an asymmetry value β (“evaluation value”) obtained based on the test data reproduced from the PCA is stored in the optical disc. This is performed by determining whether or not it is within a predetermined range (such as Tβ ± 1%) including the corresponding target Tβ (“reference value”) (see, for example, Patent Document 1 shown below).

  FIG. 6 is a flowchart for explaining a conventional OPC operation. First, from the disc identification information recorded in advance on the optical disc, the OPC history information set in the past OPC under the same recording conditions as this time, the target Tβ and the initial recording power corresponding to the optical disc to be recorded this time The value PW1 is determined (S600). Then, the first test recording is performed based on the initial value PW1, and as a result, the asymmetry value β1 is calculated. Further, the second test recording is performed based on the recording power value PW2 obtained by adding the predetermined value α to the initial value PW1, and as a result, the asymmetry value β2 is calculated (S601).

  Next, as the third test record, a linear approximation formula based on the initial value PW1 and asymmetry value β1 in the first test record, the recording power value PW2 and asymmetry value β2 in the second test record, and the target Tβ. The recording power value PW3 is calculated by “(PW2−PW1) × (Tβ−β1) ÷ (β2−β1) + PW1” (S602). Then, the third test recording is performed based on the recording power value PW3, and the asymmetry value β3 is calculated (S603).

Here, it is determined whether or not the asymmetry values β3, β2, and β1 are within the range of the target Tβ ± 1% in the order (S604). If it is within the target Tβ ± 1% range (S605: YES), the optimum recording power value is determined and actual recording is performed based on the optimum recording power value (S606). If it is not within the target Tβ ± 1% range (S605: NO), the initial value PW1 and the recording power value PW2 are shifted by a certain value ((PW2−PW1) ÷ 2 etc.), and the processes after S601 are repeated again. Will go.
JP-A-7-287847

By the way, in the conventional OPC operation, if the asymmetry values β1, β2, and β3 obtained as a result of performing the test recording three times do not fall within the predetermined range including the target Tβ, the test recording for three times is newly performed. It must be made. If the initial value PW1 in the first test recording is a value far from the optimum recording power, the number of test recordings increases, and the limited area PCA is wasted. There is a fear.
An object of the present invention is to provide an optical disc apparatus capable of efficiently executing OPC and a control method therefor.

The main present invention for solving the above-described problem is that, after performing test recording in a predetermined area of an optical disc, the test recording is evaluated on the basis of a reference value corresponding to the optical disc. In the optical disc apparatus configured to set the storage power value of the emitted laser light, the first recording power value and the reference value of the laser light corresponding to the optical disc are determined, and the first recording power value is determined. When the first evaluation value indicating the result of the test recording based on the first evaluation value is acquired and the first evaluation value is not included in a predetermined range including the reference value, the first recording power value is A different second recording power value is determined, a second evaluation value indicating a result of the test recording based on the second recording power value is obtained, and the second evaluation value is included in the predetermined range. Absent A third recording power value is determined based on the first recording power value and the first evaluation value, and the second recording power value and the second evaluation value, When the third evaluation value indicating the result of the test recording based on the recording power value of 3 is not included in the predetermined range, the second recording power value is the first recording power value, and the first recording power value is The recording power value of 3 is the second recording power value, the second evaluation value is the first evaluation value,
The third evaluation value is replaced with the second evaluation value to newly determine the third recording power value, and the test recording is evaluated based on the newly determined third recording power value. And a control means for retrying.

  In the optical disc apparatus according to the present invention, unlike the OPC operation in the conventional optical disc apparatus, when the first to third evaluation values obtained as a result of performing the test recording three times do not fall within the predetermined range, In the second test record (second recording power value and second evaluation value) expected to be within the predetermined range from the first test record (second recording power value and second evaluation value) and in the third test record (third The recording power value and the third evaluation value) are effectively used to determine a new third recording power value and perform one test recording. For this reason, the optical disc apparatus according to the present invention eliminates the need for three new test recordings as in the OPC operation in the conventional optical disc apparatus, thereby reducing the load in the OPC operation and reducing the predetermined area of the optical disc. It will not be wasted.

  Other features of the present invention will become apparent from the accompanying drawings and the description of this specification.

  According to the present invention, it is possible to provide an optical disc apparatus capable of efficiently executing OPC and a control method thereof.

=== Example ===
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Outline of optical disc device>
An optical disc apparatus 100 shown in FIG. 1 as an embodiment of the present invention will be described. Note that the optical disc apparatus 100 targets all write-once optical discs such as CD-R media and DVD ± R media for recording and reproduction.

  As shown in FIG. 2, the optical disc 200 has a PCA (Power Calibration Area) 400a, a PMA (Program Management Area), a lead-in area, a data area, and a lead-out area from the inner circumference side to the outer circumference side. . Here, the PCA ("predetermined area") 400a is a recording area reserved for setting an optimum recording power value of the light emitting element 1a in accordance with the manufacturer and recording speed prior to actual recording. The setting of the optimum recording power value is called OPC (Optimum Power Control).

  The PCA 400a is divided into a test area for recording predetermined test data and a count area for storing a test area address and a flag value indicating a recorded / unrecorded state of the test data. Have partitions. As the OPC test recording, one test recording is usually performed with 15 recording power values for one partition in the test area.

  The optical disc device 100 is a drive device capable of recording / reproducing with respect to the optical disc 200. As shown in FIG. 1, the optical disc apparatus 100 includes an optical head 1, a front end processing unit 2, an optical head servo circuit 3, a level detection circuit 4, a decoder 5, an encoder 6, an interface unit 7, a RAM 8, a system control microcomputer (“control”). Means]) 9, ROM 10, laser output control circuit 11, laser drive circuit 12, spindle motor 13, motor drive circuit 14, and motor control circuit 15.

  The optical head 1 includes an objective lens (not shown), a light emitting element 1a that emits laser light, a light receiving element (not shown) that receives reflected light from the optical disc 200, and the like. Further, the optical head 1 has a slide mechanism for moving the optical head 1 to a recording / reproducing target recording track, and control for tracking the laser light emitted to the optical disc 200 to the recording / reproducing target recording track (tracking control). And a tracking mechanism for performing a control (focus control) for correcting defocusing of the laser light emitted to the optical disc 200 (all not shown).

  The front end processing unit 2 includes an RF amplifier, a tracking error signal generation circuit, a focus error signal generation circuit, and the like (all not shown). The RF amplifier determines the presence / absence of a recording mark on a recording track to be recorded / reproduced based on an electric signal generated according to the amount of light received by a light receiving element (not shown) of the optical head 1. RF signal is generated.

  The optical head servo circuit 3 is a servo mechanism (tracking servo mechanism or focus servo) incorporated in the optical head 1 based on various error signals (tracking error signal, focus error signal, etc.) generated by the front end processing unit 2. Servo control signal for driving the mechanism etc. is generated. Then, the drive of the servo mechanism is controlled based on the servo control signal.

  The level detection circuit 4 is a circuit provided for calculating the asymmetry value β ((A1 + A2) / (A1−A2), “evaluation value”) used by the system control microcomputer 9 in the OPC evaluation. It comprises a hold circuit 4a and a bottom hold circuit 4b. When the test data recorded on the PCA of the optical disc 200 is reproduced, the RF signal generated by the RF amplifier is received, and the peak level A1 and the bottom level A2 of the RF signal are detected.

  The level detection circuit 4 may be configured by a zero-cross comparator and an LPF (Low Pass Filter) circuit (both not shown). The level detection circuit 4 having this configuration receives the RF signal generated by the RF amplifier when reproducing the test data recorded on the PCA of the optical disc 200, and receives the DC voltage of the RF signal via the zero cross comparator and the LPF circuit. Detect level. Then, the OPC is evaluated based on a comparison between the level of the DC voltage received from the LPF circuit and the target DC voltage level when the target Tβ is reached.

  The decoder 5 performs a decoding process corresponding to the data format of the optical disc 200 when the optical disc 200 is played back. For example, in the case of a CD media data format, EFM (8/14 modulation) is used as a modulation code, and CIRC is used as an error correction code. Therefore, the decoder 5 performs a decoding process based on the modulation code and the error correction code based on the RF signal generated by the front end processing unit 2.

  The encoder 6 performs an encoding process corresponding to the data format of the optical disc 200 with respect to recording data input via an interface unit 7 from an information processing apparatus (not shown) such as a personal computer. For example, in the case of a CD media data format, CIRC encoding processing, EFM modulation processing, scramble processing, and the like are applicable, and the recording modulation signal after these processing is transmitted to the laser output control circuit 11.

  The interface unit 7 controls transmission / reception of recording / reproduction data between the optical disc apparatus 100 and an information processing apparatus (not shown) such as a personal computer.

  When the RAM 8 receives a reproduction request command from the information processing apparatus (not shown) via the interface unit 7, the RAM 8 temporarily stores data being decoded by the decoder 5. The temporarily stored data is transmitted to the information processing apparatus (not shown) via the interface unit 7. The RAM 8 temporarily stores recording data received from the information processing apparatus (not shown) via the interface unit 7. The temporarily stored recording data is accessed at the time of encoding processing by the encoder 6.

  The system control microcomputer 9 manages system control of the entire optical disc apparatus 100 related to recording / reproduction of the optical disc 200. For example, the system control microcomputer 9 controls the activation of the encoder 6 / decoder 5 in order to perform modulation / demodulation processing according to the optical disc 10 when recording / reproducing the optical disc 200. The system control microcomputer 9 implements the following functions of the OPC processing unit 9a by firmware (program) or hardware.

  Prior to the actual recording, the OPC processing unit 9a performs the optimum set by the past OPC stored in the ROM 10 based on the identification information (manufacturer, recording speed, etc.) of the optical disc 200 read from the optical disc 200. Among the recording power values, the optimum recording power value associated with the identification information is searched. Here, when a desired optimum recording power value is retrieved, the retrieved optimum recording power value is set as an initial value, and the first test recording is performed on the PCA of the optical disc 200. When the desired optimum recording power value is not searched, an initial value prepared in advance is set as the recording power value.

  Further, the OPC processor 9a receives the peak level A1 and the bottom level A2 from the level detection circuit 4, and calculates the asymmetry value β by the calculation of “(A1 + A2) / (A1−A2)”. Then, the calculated asymmetry value β is compared with the target Tβ associated with the identification information of the optical disc 200, for example, whether or not the optimal criterion of “| β−Tβ | / 100 ≦ 1%” is satisfied. Determine. Based on this determination result, the OPC processing unit 9a adjusts the recording power value of the light emitting element 1a via the laser output control circuit 11, and performs test recording on the PCA of the optical disc 200. Then, the recording power value when it is determined that the calculated asymmetry value β satisfies the optimum criterion is set as the optimum recording power value. The optimum recording power value is stored in the ROM 10 as history information so as to be effectively used in the next and subsequent OPCs.

  The ROM 10 stores the target Tβ associated with the identification information of the optical disc 200 and the optimum recording power value set in the past as OPC history information. Instead of the OPC history information, a recording power value recommended as an initial value of OPC may be stored in the ROM 10 in advance.

Based on the recording modulation signal received from the encoder 6, the laser output control circuit 11 generates a pulse signal for driving the light emitting element 1 a and transmits the pulse signal to the laser driving circuit 12.
The laser drive circuit 12 drives the light emitting element 1 a based on the pulse signal received from the laser output control circuit 11. By this driving, laser light is emitted from the light emitting element 1a, and a recording mark corresponding to the recording modulation signal output from the encoder 6 is formed on the recording track of the optical disc. The laser drive circuit 12 drives the light emitting element 1a under the control of an APC (Automatic Power Control) circuit (not shown).

  The optical head 1 is provided with a front monitor diode (not shown) for detecting the recording power value or the reproduction power value of the laser light emitted from the light emitting element 1a. Based on the recording power value or the reproducing power value of the laser light monitored in step A, APC for making the recording power value or the reproducing power value of the laser light emitted from the light emitting element 1a constant is executed.

  The spindle motor 13 is a motor that rotationally drives the optical disc 200, and the motor drive circuit 14 is a circuit that rotationally drives the spindle motor 13. The motor control circuit 15 is a circuit for performing rotation drive control of the spindle motor 13 by the linear velocity constant method according to the CD standard using information on the wobbling frequency based on the WBL signal received from the WBL detection unit 5. Alternatively, rotation drive control of the spindle motor 13 may be performed by a constant angular velocity method using a pulse signal generated according to the rotation of the spindle motor 13.

<OPC operation of optical disk device>
The OPC operation of the optical disc apparatus will be described with reference to the flowchart of FIG. The following operations are performed by the system control microcomputer 9 unless otherwise specified.

  First, the optical disc apparatus 100 acquires identification information of the optical disc 200 by performing a predetermined decoding process on the signal read from the optical disc 200. Subsequently, when the optical disc apparatus 100 receives a recording request command from an information processing apparatus (not shown) such as a personal computer via the interface unit 7, the optical disc apparatus 100 starts executing OPC prior to recording on the optical disc 200.

  The system control microcomputer 9 controls the rotational drive of the spindle motor 13 via the motor control circuit 15 so that the rotational speed of the optical disc 200 becomes the designated recording speed. Further, the system control microcomputer 9 searches for the target Tβ and the optimum recording power value associated with the identification information of the optical disc 200 stored in the ROM 10. When the optimum recording power value is not searched, an initial value prepared in advance is used. In this way, the target Tβ (“reference value”) and the initial value PW1 of the recording power of the light emitting element 1a (“first recording power value”) are determined (S300).

  Next, the system control microcomputer 9 sets the determined initial value PW1 to the recording power value of the light emitting element 1a, and executes the first test recording on the PCA. After the first test recording is performed, the test data recorded by the PCA is reproduced. Then, the system control microcomputer 9 receives the peak level A1 and the bottom level A2 for the reproduction signal of the test data via the level detection circuit 4, and calculates the asymmetry value β1 (S301).

  Next, the system control microcomputer 9 executes the OPC evaluation by comparing the target Tβ read from the ROM 10 with the asymmetry value β1 calculated in S301. As an evaluation of this OPC, it is determined whether or not the asymmetry value β1 calculated in S301 is within a range of ± 1% of the target Tβ (S302). If the asymmetry value β1 falls within ± 1% of the target Tβ (S302: YES), the system control microcomputer 9 determines the current recording power value PW1 of the light emitting element 1a as the optimum recording power value. Then, the encoder 6 and the like are controlled to start recording on the optical disc 200 based on the optimum recording power value (S309).

  On the other hand, when the asymmetry value β1 does not fall within ± 1% of the target Tβ (S302: NO), the system control microcomputer 9 needs to adjust the recording power value of the light emitting element 1a and evaluate the OPC again. . Therefore, the system control microcomputer 9 sets a recording power value PW2 (“second recording power value”) that is obtained by adding (or subtracting) a predetermined adjustment value Δ to the initial value PW1, and based on the recording power value PW2. To execute the second test recording. Similarly to the first test record, an asymmetry value β2 (“second evaluation value”) is calculated as a result of the second test record (S303), and this asymmetry value β2 is ± 1% of the target Tβ. It is determined whether or not it is within the range (S304).

  If the asymmetry value β2 falls within ± 1% of the target Tβ (S304: YES), the system control microcomputer 9 determines the recording power value PW2 as the optimum recording power value and performs recording on the optical disc 200. Start (S309). On the other hand, when the asymmetry value β2 does not fall within ± 1% of the target Tβ (S304: NO), the initial value PW1 and the asymmetry value β1 in the first test recording and the second time are used for the third test recording. The recording power value PW3 (““ PW2−PW1) × (Tβ−β1) ÷ (β2−β1) + PW1 ”based on the recording power value PW2 and the asymmetry value β2 and the target Tβ in the test recording of The third recording power value ") is calculated (S305).

  This linear approximation formula “(PW2−PW1) × (Tβ−β1) ÷ (β2−β1) + PW1” is intended to effectively use the mechanism for calculating the conventional linear approximation formula shown in FIG. Of course, the present invention is not limited to this. For example, the linear approximation formula may be multiplied by a coefficient, or an approximation formula based on various approximation algorithms may be adopted.

  Next, the third test recording is performed based on the recording power value PW3, and as the result of the third test recording, asymmetry value β3 (“third evaluation value” is performed, as in the first and second test recordings. ]) Is calculated (S306), and it is determined whether or not the asymmetry value β3 is within a range of ± 1% of the target Tβ (S307). If the asymmetry value β3 falls within ± 1% of the target Tβ (S307: YES), the system control microcomputer 9 determines the recording power value PW3 as the optimum recording power value and performs recording on the optical disc 200. Start (S309).

  On the other hand, when the asymmetry value β3 does not fall within ± 1% of the target Tβ (S307: NO), the target in the linear approximation formula “(PW2−PW1) × (Tβ−β1) ÷ (β2−β1) + PW1” Update parameters other than Tβ. The update contents include PW2 as PW1, PW3 as PW2, and β2 as β1 in order to effectively use the second and third test record results that are expected to be closer to the target Tβ than the first test record. , Β3 is replaced with β2 (S308). Then, after updating the parameters, the calculation of the linear approximation formula is executed, and the processing from S305 is retried with the calculation result as the recording power value PW3.

  The above is the outline of the OPC operation of the optical disc apparatus 100 according to the present invention. Here, in order to contrast the OPC operation of the optical disc apparatus 100 according to the present invention with the OPC operation of the conventional optical disc apparatus described based on the flowchart of FIG. 6, a description will be given with reference to FIGS.

  First, FIG. 5 is a diagram for explaining the OPC operation of a conventional optical disk apparatus. The numerical values in parentheses () in the figure indicate test recordings for a total of three times based on the recording power values of PW1, PW2, and PW3. As the control loop, the number of control loops is shown. That is, in FIG. 5, in the third control loop, the asymmetry value β3 (3) obtained by the test recording by PW1 (3), PW2 (3) and PW3 (3) is within ± 1% of the target Tβ. This is an example, and a total of nine test recordings have been performed.

  On the other hand, FIG. 4 is a diagram for explaining the OPC operation of the optical disc apparatus 100 according to the present invention, and the numerical values in parentheses () in the figure indicate the number of OPC control loops. Note that the recording conditions such as the manufacturer of the optical disc 200 and the recording speed are the same as in the example shown in FIG. 5, that is, the characteristics of the recording power value P and the asymmetry value β (thick lines in FIGS. 4 and 5) are the same.

  In FIG. 4, in the second control loop, the linear approximation formula “(PW2−PW1) is obtained using PW2 (1) and PW3 (1) and β2 (1) and β3 (1) obtained in the first control loop. ) × (Tβ−β1) ÷ (β2−β1) + PW1 ″ is updated. Then, PW3 (2) is obtained by calculation of the linear approximation formula after the parameter update, and β3 (2) obtained by the fourth test recording based on this PW3 (2) is within ± 1% of the target Tβ. An example is shown. That is, a total of four test recordings have been performed, and the asymmetry value β can be kept within ± 1% of the target Tβ with a smaller number of test recordings than in the conventional optical disc apparatus.

  As described above, according to the optical disc device 100 and the control method thereof according to the present invention, unlike the OPC operation in the conventional optical disc device, β1 to β3 obtained as a result of three test recordings do not fall within the predetermined range of the target Tβ. In this case, the data (PW2 and β2) in the second test recording and the data (PW2 and β2) in the third test recording that are expected to be within the predetermined range of the target Tβ as compared with the result of the first test recording ( PW3 and β3) are effectively used to determine a new PW3 and perform one test recording. For this reason, the optical disc apparatus 100 according to the present invention does not need to newly perform test recording for three times as in the OPC operation in the conventional optical disc apparatus, so that the load in the OPC operation is reduced and the PCA of the optical disc 200 is reduced. Is no longer wasted.

<Other embodiments>
As mentioned above, although embodiment of this invention was described concretely based on the embodiment, it is not limited to this and can be variously changed in the range which does not deviate from the summary.

  For example, in the above-described embodiment, an upper limit value and a lower limit value may be set for β1 calculated in S301, β2 calculated in S303, and β3 calculated in S306. That is, when the recording power value set in the light emitting element 1a is too large or conversely too small, the level of the RF signal obtained by the reflected light from the optical disc 200 is fixed to the peak side or the bottom side. In this case, the asymmetry value β obtained as a result of the OPC test recording falls into a state saturated with respect to the recording power value, and it becomes difficult to converge near the target Tβ. As a result, the test recording is performed many times. There is a risk of being done.

  Therefore, in S301, S303, and S306, for example, when an asymmetry value β greater than + 30% (upper limit value) of the target Tβ is obtained, the asymmetry value β is replaced with “+ 30%” of the target Tβ. Similarly, when an asymmetry value smaller than −30% (lower limit value) of the target Tβ is obtained, the asymmetry value β is replaced with “−30%” of the target Tβ.

  The upper limit value and the lower limit value are not limited to “± 30%” of the target Tβ, and numerical values in which the asymmetry value β satisfies the linear relationship with the recording power value P and is not saturated are adopted. It is preferable to do.

  By setting the upper limit value and the lower limit value in this way, the convergence rate in the vicinity of the target Tβ is improved with respect to the asymmetry value β obtained by the OPC test recording.

1 is a system configuration diagram of an optical disc apparatus according to an embodiment of the present invention. It is a figure explaining the disk format of an optical disk. 5 is a flowchart for explaining an OPC operation of the optical disc apparatus according to the embodiment of the present invention. It is a figure explaining the OPC operation | movement of the optical disk apparatus based on embodiment of this invention. It is a figure explaining the OPC operation | movement of the conventional optical disk apparatus. It is a flowchart explaining the OPC operation | movement of the conventional optical disk apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical head 1a Light emitting element 2 Front end processing part 3 Optical head servo circuit 4 Level detection circuit 4a Peak hold circuit 4b Bottom hold circuit 5 Decoder 6 Encoder 7 Interface part 8 RAM
9 System control microcomputer 9a OPC processor 10 ROM
11 Laser output control circuit 12 Laser drive circuit 13 Spindle motor 14 Motor drive circuit 15 Motor control circuit 100 Optical disc apparatus 200 Optical disc

Claims (4)

After performing test recording in a predetermined area of the optical disc, the storage power value of the laser light emitted to the optical disc is set based on the result of evaluating the test recording based on the reference value corresponding to the optical disc. In the configured optical disk device,
Determining the first recording power value and the reference value of the laser beam according to the optical disc;
Obtaining a first evaluation value indicating a result of the test recording based on the first recording power value;
A second recording power value different from the first recording power value is determined when the first evaluation value is not included in a predetermined range including the reference value;
Obtaining a second evaluation value indicating a result of the test recording based on the second recording power value;
When the second evaluation value is not included in the predetermined range, the first recording power value and the first evaluation value, the second recording power value and the second evaluation value, To determine a third recording power value based on
When the third evaluation value indicating the result of the test recording based on the third recording power value is not included in the predetermined range,
The second recording power value as the first recording power value;
Replacing the third recording power value with the second recording power value;
The second evaluation value as the first evaluation value,
The third evaluation value is replaced with the second evaluation value,
And a control means for re-determining the test recording based on the newly determined third recording power value while newly determining the third recording power value by replacing
An optical disc apparatus comprising:   The control means is (the second recording power value−the first recording power value) × (the reference value−the first evaluation value) ÷ (the second evaluation value−the first evaluation value). 2) to determine the third recording power value. 2. The optical disk device according to claim 1, wherein the third recording power value is determined.   The optical disk apparatus according to claim 1, wherein the control unit sets an upper limit value and a lower limit value for the first to third evaluation values. After performing test recording in a predetermined area of the optical disc, the storage power value of the laser light emitted to the optical disc is set based on the result of evaluating the test recording based on the reference value corresponding to the optical disc. In the control method of the configured optical disc apparatus,
Determining the first recording power value and the reference value of the laser beam according to the optical disc;
Obtaining a first evaluation value indicating a result of the test recording based on the first recording power value;
A second recording power value different from the first recording power value is determined when the first evaluation value is not included in a predetermined range including the reference value;
Obtaining a second evaluation value indicating a result of the test recording based on the second recording power value;
When the second evaluation value is not included in the predetermined range, the first recording power value and the first evaluation value, the second recording power value and the second evaluation value, To determine a third recording power value based on
When the third evaluation value indicating the result of the test recording based on the third recording power value is not included in the predetermined range,
The second recording power value as the first recording power value;
Replacing the third recording power value with the second recording power value;
The second evaluation value as the first evaluation value,
The third evaluation value is replaced with the second evaluation value,
Re-determining the test recording based on the newly determined third recording power value and newly determining the third recording power value by replacing
A method for controlling an optical disk device, comprising:

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