JP2003085761A - Optical disk drive - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To perform zone recording on an optical disk by the ZCLV method, determine the type of the optical disk, correctly detect the fluctuation due to manufacturing variation of the maximum writing speed, and perform high-speed recording without causing servo departure. The optical disk device configured as above is realized. A test writing is performed at a basic linear velocity, an optimum recording power value at the basic linear velocity is obtained, and the recording power at each linear velocity uses an optimum recording power at the basic linear velocity and an operation coefficient at each linear velocity. In the optical disc apparatus that determines the recording power by calculating the calculation power, the unit 16 that determines the type of the optical disc 1, the division time for dividing the recording zone for each optical disc, and the recording linear velocity of each recording zone are stored. Having zone parameter storage means 17;
Test recording is performed at least at two or more positions on the optical disk at a plurality of different recording linear velocities, and zone parameters are optimized and stored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device, and more particularly to an optical disk device characterized by a write control system.

[0002]

2. Description of the Related Art In a disc-shaped optical information recording medium (hereinafter referred to as "optical disc"), the disc rotation speed has been conventionally controlled mainly when recording / reproducing data at a constant linear velocity. CLV (Constan
t Linear Velocity (constant angular velocity) method and CAV (Constant Angular) for recording / reproducing at a constant rotation speed
Velocity (constant angular velocity) method is used. CL
Since the V method controls the number of rotations of the optical disc so that the linear velocity is constant regardless of the radial position of the sector, the recording density can be made constant regardless of the inner and outer positions of the optical disc. It has the feature that However, since the rotation speed of the optical disk needs to be changed depending on the radial position of the sector, the seek speed is slow, and since the sector position does not become radial, the random access performance is deteriorated and the data transfer speed is slow. On the other hand, the CAV method can specify the sector position radially with respect to the center of rotation of the optical disk, and therefore has the advantages of excellent random accessibility and high data transfer rate. However, the recording density decreases in proportion to the increase in the radial position of the sector, that is, as the position approaches the outer circumference of the optical disc. Therefore, the amount of recorded information is smaller than that in the CLV method.

In a digital optical disk called a compact disk (CD), spiral tracks are formed on the optical disk from the inner circumference toward the outer circumference with a constant linear density. In addition, a CD on which information can be recorded or rewritten is a CD-R (CD-Recordable) or a CD-R.
Known as W (CD-Rewritable), this C
Even when recording information on a D-R or the like, information is recorded on the track formed in a spiral shape from the inner circumference to the outer circumference so that a constant linear density is obtained.

In such a CD type optical disk, it is usual to record while rotating at a constant linear velocity (CLV method). When recording is performed by this CLV method, the disk rotation speed at the inner peripheral portion and the outer peripheral portion are increased. The disk rotation speed of the disk is significantly different, and the rotation speed of the inner peripheral portion is larger. For this reason, in order to prevent the track from becoming off during recording, it is necessary to set the CLV speed at which the track does not come off at the innermost peripheral portion where the optical disk rotates at the highest speed, and to record the entire surface of the disk. In this case, the number of rotations on the outer peripheral portion of the disc is a number of rotations of the disc that has a margin for track deviation.

In recent years, the area of an optical disk is divided into a plurality of recording zones such as an inner circumference, a middle circumference, and an outer circumference, and C in each zone is divided.
ZCL that allows continuous writing by individually setting the LV speed
The V (Zone Constant Linear Velocity) method has been proposed. For example, in Japanese Patent Laid-Open No. 7-93873, the Z
A method of recording by the CLV method is disclosed. But,
For an optical disk such as an optical disk such as a CD-R that has only one spiral track, it is not divided into zone areas in advance, so ZC
Recording in LV is not possible. In addition, JP-A-11-6672
Similarly to the above invention, Japanese Patent Publication No. 6 discloses a method of recording on an optical disc that already has a zone area by the ZCLV method. In this case as well, on an optical disc such as a CD-R, etc. Recording with ZCLV is not possible.

Therefore, in order to solve such a problem,
The present applicant has proposed a new ZCLV system that can increase the recording speed to CAV-like, based on the CLV recording method that has been used so far. this is,
Provided are an optical disk device and an optical disk recording method capable of improving the average recording speed to efficiently reduce the average recording time even in the case of data recording requiring continuity, and suppressing the power consumption during data recording. The data recordable area of the optical disc is divided into a plurality of zones from the inner circumference side to the outer circumference side, and a plurality of zones are set, the position data is stored, and the position where the data is recorded on the optical disc is detected. Then, by referring to the position data, it is determined which zone the zone is, the recording speed and the recording power are set for each zone, the data recording is performed by the CLV method, and the recording density is equal in all zones. The data is recorded in.

[0007]

As described above, the ZCLV recording is performed by suspending and resuming the data to be recorded on the optical disc with the continuity guaranteed at an arbitrary position and increasing the CLV speed at the time of the resumption. Has been proposed, and a mechanism capable of realizing high-speed recording has been clarified. Normally, when recording is performed on an optical disc such as a CD-R, a PCA (Power) provided on the innermost peripheral portion of the disc is used.
The system is designed to obtain optimum recording power by performing trial writing at the recording speed in the Calibration Area). A series of operations of the above trial writing is referred to as OPC (Optimal
um Power Calibration). Therefore, it is possible to verify whether servo deviation occurs by setting the recording linear velocity before recording and performing OPC.
In the case of the CAV method or ZCLV method that requires recording at different speeds at one time, it is difficult to verify the servo deviation unless the recording is actually performed.

While the speed of the optical disk device for recording by the ZCLV system has been increasing, the optical disk is manufactured by various companies and countries, so that the optical disk with poor mechanical characteristics such as eccentricity and surface wobbling, so-called poor quality. There is a risk that optical discs will hit the market. In addition, the assembling precision varies in the drive of the optical disc device, and the chucking precision (the amount of deviation between the center of the optical disc and the rotation center of the motor) when the optical disc is loaded also varies, so that the relative mechanical precision of the optical disc. It will be scattered. Due to these manufacturing variations, the maximum writable speed also varies. Therefore, it is necessary that the maximum writing speed can be correctly set and set by accurately detecting the variation due to manufacturing variations.

The present invention has been made in view of the above circumstances, and when zone recording is performed on an optical disk using the ZCLV recording method, the type of the optical disk is determined and the fluctuation of the maximum writing speed due to manufacturing variations is correctly detected. Then, it is an object of the present invention to provide an optical disk device capable of high-speed recording without causing a servo deviation.

[0010]

In order to achieve the above object, the invention according to claim 1 provides a plurality of zones (Z1, Z2, Z2) on the recording / reproducing surface of a recordable / reproducible optical disk in the radial direction.
, Zn), and the information is recorded by rotating this optical disc at different rotation speeds (S1, S2, ..., Sn) for each zone so that the linear velocity is almost constant in each zone. In the optical disc apparatus having the ZCLV recording method for performing, the optimum write power value at the basic linear velocity is obtained by performing trial writing (OPC) at the basic linear velocity, and the recording power at each linear velocity is the basic linear velocity. In the optical disc device for determining the recording power by calculating the recording power by using the optimum recording power and the calculation coefficient for each linear velocity in the case of, the means for determining the type of the optical disc and the dividing time for dividing the recording zone for each optical disc ( t1, t2, ..., tn-
1) and the recording linear velocity of each recording zone (S1, S2, ...,
Sn) is stored in the zone parameter storage means, and test recording is performed at a plurality of different recording linear velocities at least at two or more positions on the optical disc to optimize and store the zone parameters. It is a thing.

According to a second aspect of the present invention, in the optical disc apparatus according to the first aspect, there is provided means for determining the type of the optical disc, and the type determination means for the optical disc determines the type of the optical disc before recording. In the case where the ZCLV recording is performed by selecting a zone parameter suitable for that, and the test recording is performed again by setting the recording linear velocity higher than the recording linear velocity of each zone and the servo error does not occur. The recording linear velocity (S1, S2, ..., Sn) of the zone parameter is updated. Furthermore, in the invention according to claim 3, in the optical disk device according to claim 2, test recording is performed in each recording zone at different recording linear velocities, and each zone of the stored zone parameters is divided according to the result of the test recording. The division time (t1, t2, ..., Tn-1) is updated.

In the optical disk device according to the first, second or third aspect, in the case of an optical disk such as a CD-R, at least 1
Although one optical disk is consumed for test recording, as a result, the speed setting that does not cause a servo error at the time of recording is known before recording.By storing the zone parameter at that time, information recording after that can be performed. Can realize practical ZCLV recording without causing a servo error.

By the way, in the optical disc device according to the first, second or third aspect, various linear velocities are obtained when an optical pickup having a low maximum output of a laser emitted from a light source is used or when an optical disc having a low recording sensitivity is used. In some cases, the recording power of exceeds the maximum output of the laser. Therefore, in the invention according to claim 4, in the optical disk device according to claim 1, 2 or 3, when test recording of data is actually performed at a plurality of different recording linear velocities in each recording zone,
The recording linear velocity is controlled so that the recording power at the recording linear velocity does not exceed the maximum output power of the laser. That is, in the optical disk device according to claim 4, the recording linear velocity is limited so that the recording power at each recording linear velocity does not exceed the maximum output of the laser.
It is possible to use an optical disc having a low recording sensitivity or an optical pickup having a low maximum laser output.

In the optical disk device according to the first to fourth aspects, if the optimization for updating the zone parameters is performed every time, a large amount of optical disks will be consumed for test recording. Therefore, the timing of updating the zone parameters needs to be set by the user as necessary.
Therefore, in the invention according to claim 5, in the optical disk device according to claim 1, 2, 3 or 4, execution of an optimization mode for updating zone parameters can be selected, and a special startup different from a normal startup is performed. It is characterized in that the disk optimization mode is executed only when the method is applied to the drive. That is, in the optical disc apparatus according to the fifth aspect, the disc optimization mode is executed only when the user performs a special start-up method different from the normal start-up on the drive. Users to perform disk defragmentation.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the configuration, operation and operation of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing an embodiment of the present invention and is a block diagram of a control system of an optical disk device. This optical disk device is a CD-R / RW (CD-Recordable /
Rewritable) for recording or reproducing information, and includes a spindle motor 2, a motor driver 3, a servo means (control means) 4, an optical pickup 5, a read amplifier 6, a CD decoder 7, a CD-ROM decoder 8, Buffer manager 9, buffer RAM 10, host interface (host I / F) 11, ATIP (Absol
ute Time In Pre-groove) decoder 12, CD encoder 13, CD-ROM encoder 14, laser controller 15, CPU (main control unit) 16, memory 17 such as RAM and ROM.

The optical disc 1 is rotated by a spindle motor 2, and the spindle motor 2 is a motor driver 3
The optical disk 1 is CLV (Constant
The driving is controlled so that it rotates by a linear velocity (constant linear velocity) method, a ZCLV method, or a CAV (Constant Angular Velocity) method. The optical pickup 5 emits a laser beam from a laser light source such as a laser diode (LD), focuses the laser beam on the recording surface of the optical disc 1 by an objective lens, and serves as servo means (control means) for focus servo and track servo. )
The focus servo and the track servo are performed by controlling the actuator by means of No. 4, and information (data) recorded on the optical disc 1 is reproduced or the optical disc 1 is reproduced.
Record information (data) on top.

At the time of data reproduction, the reproduction signal obtained by the optical pickup 5 is amplified by the read amplifier (RF amplifier) 6 and binarized, and then the CD decoder 7 performs deinterleaving and error correction processing. . CD decoder 7
The data from CD is subjected to an error correction process by the CD-ROM decoder 8 to improve the reliability of the data. CD
-Data from the ROM decoder 8 is temporarily stored in the buffer RAM 10 by the buffer manager 9 and, when it is prepared as sector data, is sent to the host (host computer: personal computer or the like) via the host interface (host I / F) 11. It is transferred all at once. When the data is music data, the data from the CD decoder 7 is converted into an analog audio signal by a D / A converter (not shown) and taken out.

On the other hand, at the time of data recording, the host I / F 11 such as ATAPI or SCSI is sent from the host computer.
Data recording is started after the buffer manager 9 once accumulates the data sent via the buffer RAM 10 and the data recording is started on the previously recorded optical disc, but the OPC (Optimum Power Calibrati) previously recorded.
on) Before the data recording is started, the CPU 16 does not store the result in the memory 17 of the drive.
The PCA (Power) of the optical disc 1 is controlled by controlling each unit of this device.
The optimum recording power is obtained by performing OPC in a trial writing area called calibration area.

At the time of executing the OPC, the CPU 16 controls each part of the apparatus, and first, in the PCA area on the optical disk 1,
Recording is performed for a predetermined block (for example, 15 blocks) while increasing the recording power for each block. This OPC
At this time, the data signal corresponding to the reflected light from the optical pickup 5 is amplified by the RF detection circuit of the read amplifier 6,
The peak and bottom detection circuit detects the upper peak level (P) and the lower peak (bottom) level (B). The detection level signal is A / D converted and then the CPU 16
Is sent to the CPU 16 and the CPU 16 performs the following calculation: Beta = (P + B) / (P−B), and the Beta value used in the block closest to the predetermined value (for example, 0.04). The recording power is determined as the optimum recording power. It should be noted that this device performs the CLV operation during OPC. The optimum recording power is calculated by such a method, and a command for setting the recording power is issued to the laser controller 5.

[0020]

EXAMPLE A specific example of the control operation of the optical disk device according to the present invention will be described below.

(Embodiment 1) FIG. 2 is a flow chart showing an embodiment of the control operation of the optical disk device according to claim 1. When the optical disc 1 is inserted into the drive (step S1), the Read Toc operation is performed and the lead-in area A
The TIP (Absolute Time In Pre-groove) code is read, information such as the media manufacturer name and the media type is read, and the type of the optical disc 1 is determined. Here, it is temporarily determined to be the phthalo disk of company A (step S2).

Before recording, in the test area (PCA area) provided in the innermost peripheral portion of the optical disc 1, the optimum recording power is obtained by the OPC operation for performing the above-mentioned test writing. OPC operation is 12 times speed CLV (hereinafter 12xCL
V), and the optimum recording power P at 12xCLV
Obtain w12 (step S3). Note that this OPC operation is known, and recording is performed while the recording power is sequentially increased, the recorded portion is read, and the portion (recording power) where the optimum recording has been performed is specified and set as the optimum recording power.

From the result of the OPC operation at 12xCLV, the CPU 16 determines 16x speed (16x) and 20x speed (20x).
x), the recording power at 24 times speed (24x) is estimated.
The following formula (1) is used as an example of the calculation formula used for this estimation. Pw (v) = a (v) × Pw12 (1) Pw (v): recording power in case of CLV velocity v a (v): calculation coefficient in case of CLV velocity v Pw12: optimum in case of 12 × CLV Recording power

The CPU 16 stores the 16-times speed arithmetic coefficient a16 and the 20-times speed arithmetic coefficient a2 stored in the memory 17.
The calculation coefficients a24 of 0 and 24 times speed are read, and the recording powers Pw16 and Pw2 are calculated according to the calculation formula (1).
0, Pw24 is calculated. Pw16 = a12 × Pw12 = 1.1 × Pw12 Pw20 = a20 × Pw12 = 1.15 × Pw12 Pw24 = a24 × Pw12 = 1.2 × Pw12

Next, the CPU 16 controls each part of the apparatus, and sets a plurality of positions in the radial direction of the optical disc 1 (positions converted into time): 0 minutes, 35 minutes, 70 minutes near the calculated recording power. , 16x, 20x, and 24x for about 30 seconds, respectively (steps S4 to S6). Then, it is judged whether or not a servo error has occurred at the time of recording (step S7), and if the servo error has not occurred at all and recording can be completed, the entire surface is recorded at 24xCLV and the zone parameters of the 3Zone CLV at that time are recorded. As a result, the recording linear velocity (S1, S2, S3) of each recording zone and the dividing time (t1, t2) for dividing the recording zone are written in the memory 17 (step S8).

However, the operation flow when a servo error occurs during recording is as follows. When a servo error occurs at 16x or more at the 0-minute position in the radial direction of the optical disc 1, at 20x or more at the 35-minute position, and at 24x or more at the 70-minute position (step S9). Since a servo error occurred at 16x or more at the 0 minute position, the recording linear velocity is set to 12x from the 0 minute position. Further, since a servo error occurred at 20x or more at the 35 minute position, the recording linear velocity is set to 16x from the 35 minute position. Furthermore, since a servo error occurred at 24x or more at the 70-minute position, the recording linear velocity is set to 20x from the 70-minute position.

As a result, as in the example shown in FIG. 6, the zone 1 (Z1) from the innermost peripheral portion to the 35-minute position t1 is 12x.
Recording is performed with a recording power Pw12 at a linear velocity of CLV,
Zone 2 (Z from the 35 minute position t1 to the 70 minute position t2
In 2), recording is performed with a recording power Pw16 at a linear velocity of 16 × CLV, and a zone 3 from the 70-minute position t2 to the outermost circumference.
(Z3) records at a linear velocity of 20 × CLV, and the recording linear velocity of each recording zone (S1, S2, S3) = (12x, 1) as a zone parameter of 3Zone CLV.
6x, 20x) and the division time (t
1, t2) = (35 min, 70 min) is written in the memory 17 (step S10). Thus, in this embodiment,
Since the speed setting that does not cause a servo error at the time of recording is known before recording, by storing the zone parameter in the memory 17, the subsequent information recording does not cause a servo error and practical ZCLV recording is performed. It can be carried out.

(Embodiment 2) FIG. 3 is a flow chart showing an embodiment of the control operation of the optical disk device according to claim 2. The present embodiment is a control that is performed in the state where the zone parameters are already stored in the memory 17 by the method of the first embodiment. When the optical disc 1 is inserted into the drive (step T1), the Read Toc operation is performed, the ATIP code in the lead-in area is read, and information such as the media manufacturer name and media type is read to determine the type of the optical disc 1. . Here, it is temporarily determined to be the phthalo disk of company A (step T2). When the type of the optical disc 1 is determined, the CPU 16 selects a zone parameter suitable for the optical disc 1 from the data stored in the memory 17 and performs ZCLV recording (step T3). Since the optical disk 1 is the phthalo disk manufactured by Company A, the zone parameters shown in FIG. 6 stored in the memory 17 are read by the control operation shown in FIG. S1, S2, S3) = (12
x, 16x, 20x) and the division time (t1, t2) = (35 min, 70 min) for dividing the recording zone.

Next, the CPU 16 controls each part of the apparatus,
The OPC operation is performed with xCLV to obtain the recording power Pw12 (step T4), and thereafter, the recording linear velocity (S1, S2, S) of each read recording zone in each zone is obtained.
Write at a different speed (maximum speed does not exceed the write speed of the drive) faster than 3). In this case, as the zone 1 (Z1), the 0 minute position in the radial direction of the optical disc 1 is recorded at 16x, 20x, and 24x (the maximum writing speed supported by the drive is 24x) for about 30 seconds. Similarly, the 35-minute position of the optical disk 1 as zone 2 (Z2) is 20x and 24x, and the 70-minute position of the optical disk 1 is 24 as zone 3 (Z3).
Recording is performed for 30 seconds at x (steps T5 to T7). Then, the CPU 16 determines whether or not a servo error has occurred in each zone at the time of recording (step T8), and if the servo error does not occur and recording can be completed, the entire surface is 24x.
The recording linear velocity (S1, S) of each recording zone is recorded as the zone parameter of the 3Zone CLV at that time.
2, S3) are updated and written in the memory 17 (step T9).

However, the operation flow when a servo error occurs in each zone during recording is as follows. When the servo error occurs at 20x or more at the 0-minute position in the radial direction of the optical disc 1, the servo error occurs at 24x or more at the 35-minute position, and the servo error does not occur at 24x at the 70-minute position (step T10). , At the 0 minute position, a servo error occurred at 20x or more.
The recording linear velocity is set to 16x from the 0 minute position. Also, 35
At the minute position, a servo error occurred at 24x or more, so the recording linear velocity is set to 20x from the 35th minute position. Since no servo error occurred at 24x at the 70-minute position, the recording linear velocity is set to 24x from the 70-minute position.

As a result, as in the example shown in FIG. 7, the zone 1 (Z1) from the innermost peripheral portion to the 0 minute position t1 is 12x.
Recording is performed at the recording power Pw12 at the speed of CLV, and the zone 2 (Z2) from the 0 minute position t1 to the 35 minute position t2 is recorded at the recording power Pw16 at the speed of 16 × CLV and the recording power Pw12 is set from the 35 minute position t2 to the 70 minute position t3. Up to zone 3
In (Z3), recording is performed with a recording power Pw20 at a speed of 20 × CLV, and a zone 4 from the 70-minute position t3 to the outermost circumference is recorded.
In (Z4), recording is performed with a recording power Pw24 at a speed of 24 × CLV, and the recording linear velocity (S1, S2, S) of each recording zone is set as a zone parameter of 4Zone CLV.
3, S4) = (12x, 16x, 20x, 24x) and the division time (t1, t2, t3) for dividing the recording zone =
(0 min, 35 min, 70 min) is updated and written in the memory 17 (step T11). As described above, in this embodiment, since the speed setting that does not cause a servo error during recording is known before recording, the zone parameter is updated and stored in the memory 17, so that information recording after that can be performed by the servo. Practical ZCLV without error
Records can be made.

(Third Embodiment) FIG. 4 is a flow chart showing an embodiment of the control operation of the optical disk device according to the third aspect. Since the control operation of steps U1 to U4 of FIG. 4 is the same as the control operation of T1 to T4 of FIG. 3 described in the second embodiment, the control operation of step U5 and the steps different from the second embodiment will be described here. .

The CPU 16 controls each part of the apparatus, and 12xC
After performing the OPC operation in the LV to obtain the recording power Pw12 (step U4), 20x at the 15 min position in the radial direction of the optical disc 1 as the zone 2 (Z2) area.
24x, the optical disc 1 as the zone 3 (Z3) area
The 50-minute position in the radial direction is recorded at 24x for about 30 seconds (steps U5 and U6). Next, the CPU 16 determines whether or not a servo error has occurred (step U
7) If all the servo errors do not occur and the recording is completed, the zone 1 (Z
1) performs recording with a recording power Pw12 at a speed of 12 × CLV, and zone 2 (Z2) from the 0 minute position t1 to the 15 minute position t2 has a recording power Pw16 at a speed of 16 × CLV.
Recorded at zone 3 from the 15 minute position to the outermost circumference
For (Z3), recording is performed with a recording power Pw24 at a speed of 24 × CLV, and the zone recording speed (S1, S2, S3) = (1 as the zone parameter of 3Zone CLV.
2x, 16x24x) and the division time (t1, t2) = (0min, 15min) for dividing the recording zone are updated and written in the memory 17 (step U8).

On the other hand, the operation flow when a servo error occurs is as follows. If a servo error occurs at 24x or more at the 15-minute position in the radial direction of the optical disk 1 and no servo error occurs at 24x at the 50-minute position (step U9), a servo error occurs at 24x or more at the 15-minute position. Therefore, the recording speed is set to 20x from the 15-minute position. At the 50-minute position, no servo error occurred at 24x, so the recording linear velocity is set to 24x from the 50-minute position.

As a result, as shown in the example of FIG. 8, the zone 1 (Z1) from the innermost peripheral portion to the 0 minute position t1 is 12 × C.
Recording is performed with the recording power Pw12 at the LV speed, and the zone 2 (Z2) from the 0 minute position t1 to the 15 minute position t2 is 1
Recording with recording power Pw16 at a speed of 6xCLV,
Zone 3 (Z from 15 minutes position t2 to 50 minutes position t3
In 3), recording is performed with the recording power Pw20 at a speed of 20 × CLV, and the zone 4 (Z
In 4), recording is performed at a recording power Pw24 at a speed of 24 × CLV, and division time (t1, t2, t) for dividing the recording zone as a zone parameter of 4Zone CLV is used.
3) = (0 min, 15 min, 50 min) is updated and written in the memory 17 (step U10). As described above, in this embodiment, since the speed setting that does not cause a servo error during recording is known before recording, the zone parameter is updated and stored in the memory 17, so that information recording after that can be performed by the servo. Practical Z without error
CLV recording can be performed.

(Embodiment 4) FIG. 5 is a flow chart showing an embodiment of the control operation of the optical disk device according to claim 4. The control operations of steps V1 to V3 and V16 to V19 of FIG. 5 are S1 to S3 and S7 of FIG. 2 described in the first embodiment.
Since it is the same as the control operation of S10 to S10, the control operation of steps V4 to V15 different from the first embodiment will be described here.

The CPU 16 controls each part of the apparatus, and 12xC
After performing the OPC operation in the LV to obtain the recording power Pw12 (step V3), the OPC result in the 12xCLV indicates 16x speed (16x), 20x speed (20x), 24x
The recording power at double speed (24x) is calculated. Then 16
It is determined whether the recording power Pw16 in double-speed recording exceeds the LD maximum output power Pwmax (step V
4) If Pw16> Pwmax, the recording linear velocity is 12x
Since it is limited to CLV, test recording is not performed and the process ends. Next, if Pw16 <Pwmax in the above judgment,
The CPU 16 sets the recording power Pw for 20 × speed recording.
20 determines whether the LD maximum output power Pwmax is exceeded (step V5), and if Pw20> Pwmax
If so, the recording linear velocity is limited to 16 × CLV or less, and test recording is performed near the 0-minute, 35-minute, and 70-minute positions in the radial direction of the optical disk 1 (steps V7 to V9). If Pw20 <Pwmax in the above determination, the CPU 16 determines
It is determined whether or not the recording power Pw24 in the quadruple speed recording exceeds the LD maximum output power Pwmax (step V6). 35
Minutes, test recording near 70 minutes (step V
10-V12). Further, it is judged whether or not the recording power Pw24 in the 24 × speed recording exceeds the LD maximum output power Pwmax (step V6), and if Pw24 <Pw
If max, the recording linear velocity is limited to 24 × CLV or less, and test recording is performed near the 0 minute, 35 minute, and 70 minute positions of the optical disc 1 (steps V13 to V15). The operation after the test recording is the same as that of the first embodiment. As described above, in the present embodiment, the recording linear velocity is limited so that the recording power at each recording linear velocity does not exceed the maximum output of the laser. Can be used.

(Embodiment 5) Next, an embodiment of claim 5 will be described. In this embodiment, the optical disk device of the above-mentioned first to fourth embodiments (claims 1 to 4) alone is used for test recording in the disk optimization mode, or in the normal recording mode. It provides a method of selecting whether or not. That is, in the optical disc devices of the first to fourth embodiments, the execution of the optimization mode for updating the zone parameters can be selected, and only when a special startup method different from normal startup is performed on the drive, It executes the disk optimization mode. As an example, when pushing the eject button to insert the optical disc 1 into the drive, if the eject button is kept pressed for 10 seconds or more, the CPU 1
6 determines that the disk optimization mode is selected, and sets the disk optimization mode to be executed. As described above, in this embodiment, the disk optimization mode is executed when the user performs a special startup method different from the normal startup on the drive, so that the disk optimization is performed as necessary. Allows the user to perform customization. Therefore, useless consumption of the optical disc can be prevented.

[0039]

As described above, in the optical disk device according to the first, second or third aspect, in the case of an optical disk such as a CD-R, at least one optical disk is consumed for test recording. As a result, Since the speed setting that does not cause a servo error during recording is known before recording, by storing the zone parameters at that time in the storage means,
Subsequent information recording will not cause a servo error,
Practical ZCLV recording can be realized. Therefore, when performing zone recording on an optical disc using the ZCLV recording method, the type of the optical disc is determined, and fluctuations due to manufacturing variations in the maximum writing speed are correctly detected,
It is possible to realize an optical disk device capable of high-speed recording without causing a servo deviation.

In addition to the effects of claims 1 to 3, the optical disk device according to claim 4 limits the recording linear velocity so that the recording power at each recording linear velocity does not exceed the maximum output of the laser. Optical discs with low recording sensitivity,
An optical pickup with a low maximum laser output can be used. Further, in the optical disk device according to the fifth aspect, in addition to the effects of the first to fourth aspects, the disk optimization is performed when the user performs a special startup method different from the normal startup to the drive. Since the mode is executed, the user can execute the disk optimization as necessary, and it is possible to prevent the wasteful consumption of the optical disk. Further, it is possible to reduce the variation of the optical disc even for a disc distributor who needs to record the same disc, and it is possible to produce a highly reliable optical disc. Further, even when recording an optical disc that is not recommended by the optical disc device manufacturer or an unknown optical disc, high-reliability and high-speed recording is possible.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention and is a block diagram of a control system of an optical disc device.

FIG. 2 is a flow chart showing an embodiment of a control operation of the optical disk device according to claim 1.

FIG. 3 is a flowchart showing an embodiment of a control operation of the optical disc device according to claim 2;

FIG. 4 is a flow chart showing an embodiment of a control operation of the optical disc device according to claim 3;

FIG. 5 is a flow chart showing an embodiment of a control operation of the optical disc device according to claim 4;

FIG. 6 is a diagram showing a setting example of recording linear velocities with respect to a plurality of recording zones, in which a dividing position (a position converted into time) and a range of recording zones in a radial direction on an optical disc, and a recording linear velocity of each zone. It is a figure which shows the relationship of.

FIG. 7 is a diagram showing another example of setting recording linear velocities with respect to a plurality of recording zones, which is a division position (position converted into time) and a range of the recording zone in the radial direction on the optical disc;
It is a figure which shows the relationship of the recording linear velocity of each zone.

FIG. 8 is a diagram showing another example of setting recording linear velocities with respect to a plurality of recording zones, which is a division position (position converted into time) and range of the recording zone in the radial direction on the optical disc;
It is a figure which shows the relationship of the recording linear velocity of each zone.

[Explanation of symbols]

1 optical disc 2 spindle motor 3 motor driver 4 Servo means (control means) 5 Optical pickup 6 Read amplifier (RF amplifier) 7 CD decoder 8 CD-ROM decoder 9 Buffer manager 10 buffer RAM 11 Host interface (Host I / F) 12 ATIP decoder 13 CD encoder 14 CD-ROM encoder 15 Laser controller 16 CPU (main control unit) 17 memory

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5D044 BC05 CC06 DE03 DE12 DE17                       DE23 DE29 DE39 EF06 FG24                       GK18                 5D090 AA01 BB03 CC18 DD03 FF02                       FF05 FF30 GG32 GG33 HH03                       JJ12                 5D119 AA23 AA24 BA01 BB02 BB04                       DA01 HA19 HA28 HA45                 5D789 AA23 AA24 BA01 BB02 BB04                       DA01 HA19 HA28 HA45

Claims (5)

[Claims] 1. A recording / reproducing surface of a recordable / reproducible optical disk is divided into a plurality of zones (Z1, Z2, ..., Zn) in the radial direction, and the linear velocity of the optical disk is substantially constant in each zone. Rotation speed (S1, S
2, ..., Sn) ZCL for recording information by rotating
An optical disk device equipped with a V (Zone Constant Linear Velocity) recording method, test writing (OPC) is performed at a basic linear velocity, an optimum recording power value at the basic linear velocity is obtained, and the recording power at each linear velocity is In the optical disk device for determining the recording power by calculating the recording power by using the optimum recording power in the case of the basic linear velocity and the calculation coefficient at each linear velocity, a unit for judging the type of the optical disc and a recording zone divided for each optical disc. Divided time (t1, t2, ..., tn
-1) and the recording linear velocity of each recording zone (S1, S2, ...
., Sn) is stored, and test recording is performed at a plurality of different recording linear velocities at least at two or more positions on the optical disc to optimize and store the zone parameters. Optical disk device. 2. The optical disc apparatus according to claim 1, further comprising means for determining the type of the optical disc, wherein the type determination means for the optical disc determines the type of the optical disc before recording and selects a zone parameter suitable for it. ZCLV recording is performed and the recording linear velocity higher than the recording linear velocity of each zone is set to perform the test recording again. If no servo error occurs, the recording linear velocity of the zone parameter is set. An optical disk device characterized by updating (S1, S2, ..., Sn). 3. The optical disk device according to claim 2, wherein test recording is performed at different recording linear velocities in each recording zone,
Dividing time (t1, t2, ...) Dividing each zone of the stored zone parameters according to the result of the test recording.
., Tn-1) is updated. 4. The optical disk device according to claim 1, 2 or 3, wherein when actually performing test recording of data at a plurality of different recording linear velocities in each recording zone, the recording power at the recording linear velocity is the maximum output of the laser. An optical disk device characterized by controlling the recording linear velocity so as not to exceed the power. 5. The optical disk device according to claim 1, 2, 3 or 4, wherein execution of an optimization mode for updating zone parameters can be selected, and a special startup method different from normal startup is used as a drive. An optical disk device characterized in that the disk optimization mode is executed only when it is executed.