JP2009151889A - Optical disk drive and method of controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save power without reducing recording performance. <P>SOLUTION: During a normal operation, tracking control is performed by intermittently operating a rough moving means while continuously operating a fine moving means. During recording power testing, tracking control is performed by continuously operating the fine moving means and the rough moving means. Thus, an objective lens is positioned near the center of an operation range by stabilizing the control state of the fine moving means during recording power testing while performing power-saved tracking control. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an optical disk device and a method for controlling the optical disk device, and more particularly to a technique suitable for power saving without degrading recording performance.

  2. Description of the Related Art Conventionally, an optical disc apparatus that records and reproduces data on an optical disc such as a DVD is known. In this type of apparatus, the optical pickup unit is moved in the radial direction of the optical disk by a sled motor, and a light beam is irradiated onto a track on the optical disk to write and read data.

  In addition, an actuator for finely adjusting the irradiation position of the light beam is provided in the pickup unit, and the actuator is driven to irradiate the target track with the light beam. The adjustment amount (adjustment unit) of tracking by the actuator is smaller (fine) than the adjustment amount by the sled motor.

  Thus, by finely adjusting the irradiation position of the light beam with the actuator, the sled motor can be driven intermittently, and the power consumption can be suppressed (for example, see Patent Document 1).

JP 2001-101676 A

  However, when the sled motor is simply intermittently operated, the objective lens mounted on the optical pickup varies periodically with respect to the center of the track. As a result, the control state of the tracking actuator also periodically fluctuates greatly.

  On the other hand, the tracking actuator has the smallest driving voltage near the center of the operating range, and the jitter (time axis deviation) at the time of reading or writing optical disk data is minimized. Thus, there is a correlation between the control state of the tracking actuator and the jitter value.

  In general, in this type of apparatus, a light beam power adjustment process is performed prior to recording on an optical disk in order to stabilize the recording characteristics on the optical disk. In the power adjustment process, one track is divided into a plurality of areas, and data is recorded by changing the recording power step by step to each divided area. Then, the jitter values of the respective divided areas are compared, and the recording power of the area showing the minimum jitter value is determined as the optimum recording power.

  As described above, there is a correlation between the control state of the tracking actuator and the jitter value. Therefore, in the recording power test, the optimum recording power cannot be accurately determined unless the control state of the tracking actuator is stabilized and the objective lens is positioned near the center of the operating range.

For this reason, if the recording power is adjusted by intermittently driving the sled motor for power saving, there is a problem that the recording performance cannot be adjusted and the recording performance is deteriorated.
The present invention has been made in view of the above-described problems, and an object thereof is to enable power saving without reducing recording performance.

An optical disc apparatus of the present invention includes an irradiation unit that irradiates a disk-shaped recording medium on which a large number of tracks are formed with a light beam, and a light receiving unit that detects reflected light of the light beam emitted from the irradiation unit. An optical pickup; tracking error detection means for generating a tracking error signal indicating an amount of deviation of the optical pickup with respect to a target track on the disk-shaped recording medium using an output signal from the light receiving unit; and Coarse movement means for moving in the direction, fine movement means for moving the optical pickup in the disk radial direction in units smaller than the coarse movement means, and operations of the coarse movement means and the fine movement means in response to the tracking error signal Tracking control means for performing control, the tracking control means is a normal operation In the recording power test, the coarse movement means is operated intermittently while the fine movement means is continuously operated to perform tracking control. In the recording power test, the fine movement means and the coarse movement means are continuously operated to perform tracking control. It is characterized by performing.
Another feature of the optical disk apparatus according to the present invention is that an irradiating unit that irradiates a disk-shaped recording medium on which a large number of tracks are formed, and a reflection of the light beam irradiated from the irradiating unit. Tracking error detection for generating a tracking error signal indicating an amount of deviation of the optical pickup with respect to a target track on the disk-shaped recording medium using an optical pickup having a light receiving portion for detecting light and an output signal from the light receiving portion Means, error value judging means for judging the magnitude of the error detected by the tracking error detecting means, coarse moving means for moving the optical pickup in the radial direction of the disk, and smaller units than the coarse moving means. Fine moving means for moving the optical pickup in the disk radial direction, and the tracking error signal And a tracking control means for controlling the operation of the coarse movement means and the fine movement means. The tracking control means performs the tracking control by intermittently operating the coarse movement means in a normal operation, and performs recording control. In the test, the coarse movement means is continuously operated to perform tracking control, and when the error value determination means determines that the error value is large, the fine movement means is controlled with a large control voltage, and the error is determined. When it is determined that the value is small, control is performed with the fine moving means and a small control voltage.

An optical disk apparatus control method according to the present invention includes an irradiation unit that irradiates a disk-shaped recording medium on which a large number of tracks are formed with a light beam, and a light receiving unit that detects reflected light of the light beam emitted from the irradiation unit. An optical pickup including: a tracking error detection unit that generates a tracking error signal indicating a deviation amount of the optical pickup with respect to a target track on the disk-shaped recording medium using an output signal from the light receiving unit; and the optical pickup Coarse moving means for moving the optical pickup in the disk radial direction, fine moving means for moving the optical pickup in the disk radial direction in units smaller than the coarse moving means, coarse moving means and the fine movement according to the tracking error signal And a control method of an optical disc apparatus comprising tracking control means for controlling the operation of the means Thus, in the normal operation, the tracking control means performs tracking control by intermittently operating the coarse movement means while continuously operating the fine movement means, and in the recording power test, the fine movement means, Tracking control is performed by continuously operating the coarse movement means.
Another feature of the control method of the optical disk apparatus according to the present invention is that an irradiation unit that irradiates a disk-shaped recording medium on which a large number of tracks are formed with an optical beam, and light that is irradiated from the irradiation unit A tracking error signal indicating an amount of deviation of the optical pickup with respect to a target track on the disk-shaped recording medium is generated using an optical pickup having a light receiving unit for detecting reflected light of the beam and an output signal from the light receiving unit. Tracking error detection means, error value determination means for determining the magnitude of the error detected by the tracking error detection means, coarse movement means for moving the optical pickup in the radial direction of the disk, and smaller than the coarse movement means Fine moving means for moving the optical pickup in the radial direction of the disk in units, and the tracking And a tracking control means for controlling the operation of the coarse movement means and the fine movement means in response to an error signal, the tracking control means in the normal operation, the coarse movement means In the recording power test, the coarse moving means is continuously operated to perform tracking control, and when the error value determining means determines that the error value is large, the fine control is performed. The moving means is controlled by a large control voltage, and when it is determined that the error value is small, the moving means is controlled by the fine moving means and a small control voltage.

The program of the present invention is a light having an irradiating unit for irradiating a disk-shaped recording medium on which a large number of tracks are formed, and a light receiving unit for detecting reflected light of the light beam irradiated from the irradiating unit. A pickup, tracking error detection means for generating a tracking error signal indicating an amount of deviation of the optical pickup with respect to a target track on the disk-shaped recording medium using an output signal from the light receiving unit, and the optical pickup in the disk radial direction Coarse movement means for moving the optical pickup to the disk radial direction in units smaller than the coarse movement means, and coarse movement means and operation control of the fine movement means according to the tracking error signal A step of controlling a disk device having tracking control means for performing A program to be executed, wherein in normal operation, the coarse moving means is intermittently operated while continuously operating the fine moving means to perform tracking control, and in the recording power test, the fine moving means and the coarse movement are performed. The computer is caused to execute a step of performing tracking control by continuously operating the means.
Another feature of the program of the present invention is that an irradiation unit that irradiates a disk-shaped recording medium on which a large number of tracks are formed, and a reflected light of the light beam emitted from the irradiation unit. And a tracking error detection means for generating a tracking error signal indicating a deviation amount of the optical pickup with respect to a target track on the disc-shaped recording medium using an output signal from the light receiving unit. An error value judging means for judging the magnitude of the error detected by the tracking error detecting means, a coarse moving means for moving the optical pickup in the disk radial direction, and the light in units smaller than the coarse moving means. Fine movement means for moving the pickup in the radial direction of the disk and the tracking error signal. A program for causing a computer to execute a step of controlling a disk device having a coarse movement means and a tracking control means for controlling the operation of the fine movement means, and in a normal operation, the coarse movement means is intermittently operated. In the recording power test, the coarse moving means is continuously operated to perform tracking control, and when the error value determining means determines that the error value is large, the fine moving means is increased. Control is performed with a control voltage, and when it is determined that the error value is small, the step of controlling with the fine moving means and the small control voltage is executed by a computer.

  According to the present invention, power consumption can be suppressed in normal operation. Furthermore, it is possible to provide an optical disc apparatus that can obtain a stable jitter value in a recording power test and can select an accurate optimum recording power.

(Embodiment)
FIG. 1 is a block diagram illustrating a configuration example of a main part of an optical disc apparatus according to an embodiment of the present invention.
In FIG. 1, 263 is an optical pickup, 265 is a main axis of the optical pickup, 251 is a sub-axis of the optical pickup, 201 is a system controller, 203 is a tracking actuator driver, 259 is a tracking actuator, and 261 is a magnet.

  205 is a laser diode driver, 255 is a laser diode (functions as an irradiation unit for irradiating a light beam), 257 is an objective lens, 253 is a light receiving sensor (light receiving unit), and 211 is a sensor amplifier. Reference numeral 209 denotes a tracking error calculation unit, and 271 denotes a focus error calculation unit. 213 is a spindle motor driver, 269 is a spindle motor, 215 is a sled motor driver, and 267 is a sled motor, which functions as coarse movement means.

  FIG. 5 shows the positional relationship between the optical disc-shaped recording medium 102 and the optical pickup 263 in the optical disc apparatus 101 of the present embodiment. The optical disk-shaped recording medium 102 is formed with a large number of tracks and is controlled to rotate at a predetermined speed by a spindle motor 269. In the optical pickup 263, various controls are performed on the optical disc recording medium 102 by the control unit 105, as will be described later. As will be described later, the control unit 105 controls the driving of the sled motor 267 and the tracking actuator 259 that functions as fine movement means.

  FIG. 2 is a conceptual diagram showing the operating states of the sled motor 267 and the tracking actuator 259 when controlled by the tracking control method of the optical disc apparatus according to the present embodiment. In the figure, the vertical direction is the tangential direction of the disk, and the horizontal direction is the disk radial direction. In the present embodiment, in the recording power test, both the tracking actuator 259 and the sled motor 267 are controlled to operate continuously. Therefore, in the recording power test, as shown in FIG. 2A, the center of the objective lens 257 is always located at the center of the optical pickup.

  On the other hand, in the normal operation, the tracking actuator 259 is continuously controlled, but the time interval for controlling the sled motor 267 is made thinner than that in the case of the recording power test so as to be operated intermittently. As a result, as shown in FIG. 2B, the center of the objective lens 257 reciprocates the entire operating range width of the optical pickup.

FIG. 3 is a flowchart showing an example of a thread motor control method in operation control of the optical disc apparatus 101 of the present embodiment, particularly tracking control.
In the optical disc apparatus 101 of the present embodiment, when the operation is started in step S301, it is determined whether or not the insertion of the optical disc-shaped recording medium 102 is detected in step S302.

If the optical disc-shaped recording medium 102 is inserted as a result of this determination, the process proceeds to step S303, where it is determined whether or not to perform a recording power test. If the recording power test is performed as a result of the determination, the process proceeds to step S304, and the system controller 201 controls the thread motor 267 via the thread motor driver 215. Then, the optical pickup 263 is moved in the disk radial direction and moved to the recording power test area. In other words, after the optical disk device 101 recognizes the optical disk-shaped recording medium 102 and before performing a normal recording operation or reproducing operation, the optimum recording power of the mounted optical disk-shaped recording medium 102 is measured and stored, so that recording is performed. Complete preparation.
In the recording power test operation, the system controller 201 controls the LD driver 205 to write test data while changing the power of the laser applied to the test area of the optical disk. Then, the written test data is read, and an optimum laser power value is set according to the read result.

  In this embodiment, in step S304, tracking control is performed by performing continuous thread motor control. During continuous thread motor control, the system controller 201 performs control according to a tracking error signal generated and output by the tracking error calculation unit 209. First, the thread motor driver 215 is controlled, and the position of the pickup 263 is moved by the thread motor 267. In this state, the tracking error signal is detected again, and the actuator driver 203 is controlled to drive the tracking actuator 259 to finely adjust the tracking.

  If the normal operation is performed as a result of the determination in step S303, the process proceeds to step S305, and intermittent thread motor control is performed to perform tracking control. During intermittent thread motor control, the system controller 201 first checks the current position of the tracking actuator 259. Then, from the amount of tracking deviation due to the tracking error signal and the position of the tracking actuator 259, it is determined whether or not the target track on the disk-shaped recording medium can be irradiated with the laser only by the movement of the tracking actuator 259.

  When it is determined that the optimum tracking state is not achieved only by the movement of the tracking actuator 259, the thread motor 267 is driven in accordance with the amount of track deviation caused by the tracking error signal to move the position of the pickup 263. After that, the tracking error signal is detected again, and the actuator driver 203 is controlled to drive the tracking actuator 259 to finely adjust the tracking.

  By performing such tracking control, power consumption can be suppressed in normal operation. In addition, since a stable jitter value can be obtained in the recording power test, an accurate optimum recording power can be selected.

  Next, a second example of the thread motor control method in tracking control will be described with reference to the flowchart of FIG. In the flowchart of FIG. 4, steps that perform the same processing as in the flowchart of FIG.

  In this example, the tracking control method in the recording power test is different from the first example. That is, in the case of the first control example, the process returns from step S304 to step S303, but in the case of the second control example, the process proceeds from step S304 to step S306.

  In step S306, the system controller 201 controls the rotation of the spindle motor 269 at a specified number of rotations in the recording power test area via the spindle motor driver 213.

  Then, the system controller 201 causes the laser diode 255 to emit light via the laser diode driver 205 and irradiates the optical disc-shaped recording medium 102 with laser light. Irradiation light from the laser diode 255 is reflected by the optical disk-shaped recording medium 102, and the reflected light enters the quadrant light receiving sensor 253.

  Then, the reflected light incident on the quadrant light receiving sensor 253 is photoelectrically converted by the quadrant light receiving sensor. Then, the analog output signal output from each light receiving sensor is amplified by the sensor amplifier 211, and this amplified signal is output to the tracking error calculation unit 209 as a tracking error detection signal.

  The tracking error calculation unit 209 calculates the tracking error by calculating the amplified signals of the four divided sensors, and determines the control voltage of the tracking actuator 259.

  In step S307, it is determined whether the tracking error value calculated in step S306 is equal to or greater than a predetermined track detection value. This error value determination is performed in order to change the tracking control method according to the value of the tracking error.

  That is, when the center of the objective lens is very close to the center of the track, the control voltage of the tracking actuator 259 may be a small value. However, it is necessary to perform control to increase the control voltage of the tracking actuator 259 as the center of the objective lens and the center of the track are separated.

  Further, when the distance between the center of the objective lens and the center of the track is a predetermined value or more, the center of the objective lens and the center of the track cannot be overlapped only by the control by the tracking actuator 259, and the thread motor 267 is made to follow. There is a need.

  In order to realize such tracking control, in the second control example, an error value is determined in step S307. If the error value is within a certain value, the process proceeds to step S308, and tracking of the tracking actuator 259 is performed with a small control voltage. Take control.

  If the error value is greater than or equal to a certain value, the process proceeds to step S309, where tracking control of the tracking actuator 259 is performed with a large control voltage. Further, the system controller 201 continuously controls the thread motor 267 via the thread motor driver 215. In this embodiment, in order to continuously control the thread motor 267 in the case of a recording power test, the control time interval is set to 10 kHz.

  In the optical disc apparatus 101 of the present embodiment, when performing a recording power test, the optimum recording power is selected while performing tracking control as described above. Then, the value is stored in the memory in the system controller 201 to complete the recording preparation.

  When the recording preparation is completed, the process returns to step S303 to make the above-described determination. In this case, the result of determination in step S303 is normal operation, and the process proceeds to step S305. In step S305, the tracking control is intermittent thread motor control.

  The tracking control method in the normal operation will be described in detail. The system controller 201 controls the rotation of the spindle motor 269 at a specified rotational speed in the access position area via the spindle motor driver 213.

  Then, the system controller 201 causes the laser diode 255 to emit light via the laser diode driver 205 and irradiates the laser beam. Irradiation light from the laser diode 255 is reflected by the optical disc-shaped recording medium 102, and the reflected light enters the quadrant light receiving sensor 253 and is divided into four.

  The reflected light divided into four by the four-divided light receiving sensor 253 is photoelectrically converted by each light receiving sensor to become an analog signal. This analog signal is amplified by the sensor amplifier 211, and this amplified signal is output to the tracking error calculation unit 209. The tracking error calculation unit 209 calculates the tracking error by calculating the amplified signals of the four divided sensors, and determines the control voltage of the tracking actuator 259 (step S310).

  Next, in step S311, it is determined whether or not the tracking error calculated in step S310 is greater than or equal to a predetermined value set in advance. If the result of this determination is that the calculated tracking error is within a preset constant value, the process proceeds to step S312 to control the tracking actuator 259 with a small control voltage.

  If it is determined in step S311 that the tracking error calculated in step S310 is equal to or greater than a predetermined value, the process proceeds to step S313, and the tracking actuator 259 is controlled with a large control voltage. In the optical disc apparatus 101 of the present embodiment, in a normal operation, intermittent thread motor control is performed with the time interval for controlling the thread motor 267 being 100 Hz.

  In the present embodiment, since the tracking control method is changed according to the value of the tracking error in the normal operation and the recording power test, the power required for overlapping the objective lens center and the track center is minimized. This can save power.

(Another embodiment according to the present invention)
Each means constituting the optical disk device according to the embodiment of the present invention described above can be realized by operating a program stored in a RAM or ROM of a computer. This program and a computer-readable recording medium recording the program are included in the present invention.

  In addition, the present invention can be implemented as a system, apparatus, method, program, storage medium, or the like, and can be applied to a system composed of a plurality of devices. Moreover, you may apply to the apparatus which consists of one apparatus.

  In the present invention, a software program (in the embodiment, a program corresponding to the flowcharts shown in FIGS. 3 and 4) for executing each step in the control method of the optical disk apparatus described above is directly or remotely transmitted to the system or apparatus. Supply from. And the case where it is achieved also by the computer of the system or apparatus reading and executing the supplied program code is included.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, and the like.

  Various recording media can be used as a recording medium for supplying the program. For example, floppy (registered trademark) optical disk, hard optical disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card, ROM, DVD (DVD-ROM, DVD) -R).

  As another program supply method, a browser on a client computer is used to connect to an Internet home page. The computer program itself of the present invention or a compressed file including an automatic installation function can be supplied from the homepage by downloading it to a recording medium such as a hard optical disk.

  It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  In addition, the program of the present invention is encrypted, stored in a storage medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. Let It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS running on the computer performs part or all of the actual processing. Also, the functions of the above-described embodiments can be realized.

  Further, the program read from the recording medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Thereafter, the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the instructions of the program, and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows the structural example of the optical disk apparatus which concerns on embodiment. It is a conceptual diagram which shows the operation | movement state of a sled motor and an actuator at the time of controlling with the tracking control method of the optical disk device concerning an embodiment. 5 is a flowchart for explaining a first example of a thread motor control method in tracking control of the optical disc apparatus according to the embodiment. 12 is a flowchart for explaining a second example of a thread motor control method in tracking control of the optical disc device according to the embodiment. It is a figure explaining the correspondence of an optical disk recording medium and an optical pick-up.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Optical disk apparatus 201 System controller 203 Tracking actuator driver 205 Laser diode driver 209 Tracking error calculating part 211 Sensor amplifier 213 Spindle motor driver 215 Thread motor driver 251 Optical pickup secondary shaft 253 Light receiving sensor 255 Laser diode 257 Objective lens 259 Tracking actuator 261 Magnet 263 Optical Pickup 265 Optical Pickup Spindle 267 Thread Motor 269 Spindle Motor 271 Focus Error Calculation Unit

Claims (9)

An irradiation unit for irradiating a light beam to a disk-shaped recording medium on which a large number of tracks are formed;
An optical pickup having a light receiving unit for detecting reflected light of the light beam emitted from the irradiation unit;
Tracking error detection means for generating a tracking error signal indicating a deviation amount of the optical pickup with respect to a target track on the disc-shaped recording medium using an output signal from the light receiving unit;
Coarse movement means for moving the optical pickup in the radial direction of the disk;
Fine movement means for moving the optical pickup in the disk radial direction in units smaller than the coarse movement means;
Tracking control means for controlling the operation of the coarse movement means and the fine movement means according to the tracking error signal,
In the normal operation, the tracking control means performs tracking control by intermittently operating the coarse movement means while continuously operating the fine movement means, and in the recording power test, the fine movement means and the coarse movement means. An optical disk apparatus characterized by performing tracking control by continuously operating a disk. An irradiation unit for irradiating a light beam to a disk-shaped recording medium on which a large number of tracks are formed;
An optical pickup having a light receiving unit for detecting reflected light of the light beam emitted from the irradiation unit;
Tracking error detection means for generating a tracking error signal indicating a deviation amount of the optical pickup with respect to a target track on the disc-shaped recording medium using an output signal from the light receiving unit;
Error value determination means for determining the magnitude of the error detected by the tracking error detection means;
Coarse movement means for moving the optical pickup in the radial direction of the disk;
Fine movement means for moving the optical pickup in the disk radial direction in units smaller than the coarse movement means;
Tracking control means for controlling the operation of the coarse movement means and the fine movement means according to the tracking error signal,
In the normal operation, the tracking control means performs the tracking control by intermittently operating the coarse movement means, and in the recording power test, performs the tracking control by continuously operating the coarse movement means,
When the error value determining means determines that the error value is large, the fine moving means is controlled with a large control voltage, and when the error value is determined to be small, the fine moving means is controlled with a small control voltage. An optical disc apparatus characterized by:   3. The optical disk according to claim 2, wherein the tracking control means controls the time interval at 10 kHz when the coarse movement means is operated continuously, and controls the time interval at 100 Hz when operated intermittently. apparatus. An irradiation unit for irradiating a light beam to a disk-shaped recording medium on which a large number of tracks are formed;
An optical pickup having a light receiving unit for detecting reflected light of the light beam emitted from the irradiation unit;
Tracking error detection means for generating a tracking error signal indicating a deviation amount of the optical pickup with respect to a target track on the disc-shaped recording medium using an output signal from the light receiving unit;
Coarse movement means for moving the optical pickup in the radial direction of the disk;
Fine movement means for moving the optical pickup in the disk radial direction in units smaller than the coarse movement means;
A control method for an optical disc device comprising a tracking control means for controlling the operation of the coarse movement means and the fine movement means in response to the tracking error signal,
In the normal operation, the tracking control means performs tracking control by intermittently operating the coarse movement means while continuously operating the fine movement means, and in the recording power test, the fine movement means and the coarse movement means. A control method for an optical disc apparatus, wherein the tracking control is performed by continuously operating the optical disc. An irradiation unit for irradiating a light beam to a disk-shaped recording medium on which a large number of tracks are formed;
An optical pickup having a light receiving unit for detecting reflected light of the light beam emitted from the irradiation unit;
Tracking error detection means for generating a tracking error signal indicating a deviation amount of the optical pickup with respect to a target track on the disc-shaped recording medium using an output signal from the light receiving unit;
Error value determination means for determining the magnitude of the error detected by the tracking error detection means;
Coarse movement means for moving the optical pickup in the radial direction of the disk;
Fine movement means for moving the optical pickup in the disk radial direction in units smaller than the coarse movement means;
A control method of an optical disc apparatus comprising tracking control means for controlling operation of the coarse movement means and the fine movement means in response to the tracking error signal,
In the normal operation, the tracking control means performs the tracking control by intermittently operating the coarse movement means, and in the recording power test, performs the tracking control by continuously operating the coarse movement means,
When the error value determining means determines that the error value is large, the fine moving means is controlled with a large control voltage, and when the error value is determined to be small, it is controlled with the fine moving means and a small control voltage. A method for controlling an optical disc apparatus, comprising:   6. The optical disk according to claim 5, wherein the tracking control means controls the time interval at 10 kHz when the coarse movement means is operated continuously, and controls the time interval at 100 Hz when the coarse movement means is operated intermittently. Control method of the device. An irradiation unit for irradiating a light beam to a disk-shaped recording medium on which a large number of tracks are formed;
An optical pickup having a light receiving unit for detecting reflected light of the light beam emitted from the irradiation unit;
Tracking error detection means for generating a tracking error signal indicating a deviation amount of the optical pickup with respect to a target track on the disc-shaped recording medium using an output signal from the light receiving unit;
Coarse movement means for moving the optical pickup in the radial direction of the disk;
Fine movement means for moving the optical pickup in the disk radial direction in units smaller than the coarse movement means;
A program for causing a computer to execute a step of controlling a disk device having a coarse movement means and a tracking control means for controlling the operation of the fine movement means in response to the tracking error signal,
In normal operation, tracking control is performed by intermittently operating the coarse moving means while continuously operating the fine moving means. In the recording power test, tracking is performed by continuously operating the fine moving means and the coarse moving means. A program for causing a computer to execute a process of performing control. An irradiation unit for irradiating a light beam to a disk-shaped recording medium on which a large number of tracks are formed;
An optical pickup having a light receiving unit for detecting reflected light of the light beam emitted from the irradiation unit;
Tracking error detection means for generating a tracking error signal indicating a deviation amount of the optical pickup with respect to a target track on the disc-shaped recording medium using an output signal from the light receiving unit;
Error value determination means for determining the magnitude of the error detected by the tracking error detection means;
Coarse movement means for moving the optical pickup in the radial direction of the disk;
Fine movement means for moving the optical pickup in the disk radial direction in units smaller than the coarse movement means;
A program for causing a computer to execute a step of controlling a disk device having tracking control means for controlling operation of the coarse movement means and the fine movement means in response to the tracking error signal,
In normal operation, the coarse moving means is intermittently operated to perform tracking control, and in the recording power test, the coarse moving means is continuously operated to perform tracking control,
When the error value determining means determines that the error value is large, the fine moving means is controlled with a large control voltage, and when the error value is determined to be small, it is controlled with the fine moving means and a small control voltage. A program characterized by causing a computer to execute the step of performing.   A computer-readable storage medium storing the program according to claim 7 or 8.

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