JP2002324322A - Optical disk drive, information processing device and optical disk recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make high speed recording possible without irregular servo control by optimizing the recording speed in each zone when recording in a ZCLV method. SOLUTION: The level of irregular servo control is checked in each zone of an optical disk (steps S5, S6, S8, and S10). In this check, the levels of irregular servo controls are classified into three steps, and collected, and recorded on a table constructed in a RAM. That is, level 0 means a good control, level 1 a bad control, and level 2 a very bad control. When level 1 is detected, the recording speed is dropped one step, and dropped two steps when level 2 is detected. In this way, the speeds are registered after dropped as the optimum speeds for each zone on the above table. At each zone, CLV recording is made at the optimum speed on the optical disk (step 15).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical disk device, an information processing device, and an optical disk recording method.

[0002]

2. Description of the Related Art In a conventional compact disk (CD), spiral tracks are formed on the disk at a constant linear density from the inner circumference to the outer circumference. A CD on which information can be recorded is also known as a CD-R (CD Recordable). Also when information is recorded on this CD-R, information is recorded on a spirally formed track from the inner circumference to the outer circumference so as to have a constant linear density.

[0003] In such an optical disk, recording is generally performed while rotating at a constant linear velocity (CLV: Constant Linear Velocity). When recording is performed by the CLV method, the number of rotations of the disk at the inner peripheral portion and the outer peripheral portion are determined. The number of rotations of the disk in the portion is greatly different, and the number of rotations of the inner peripheral portion is higher. Then, in order to prevent track deviation during recording, it is necessary to perform recording by setting the CLV speed at which the track does not deviate at the innermost circumference where the optical disk rotates at the highest speed. In this case, the number of rotations at the outer peripheral portion of the optical disk is a number of rotations having a margin against the off-track.

[0004]

Therefore, the present applicant has
A ZCLV (Zone CLV) method, which is a technology that divides a disk area into zones such as an inner circumference, a middle circumference, and an outer circumference, and enables continuous writing by individually setting a CLV speed in each zone, has been proposed. (See the specification of Japanese Patent Application No. 2000-241958).

An example of the ZCLV recording will be described with reference to FIG. In the graph of FIG. 1, the horizontal axis is the disk position (time), and the vertical axis is the recording linear velocity. That is, in this example, the optical disk is divided into three zones (Lead-In to t1, t1
1 to t2, t2 to Lead-Out). Then, the CLV recording speed of each zone is set to a different value (S1,
(S2, S3) and record. At the joint (t1, t2) of each zone, the continuity of data is maintained by using the technique disclosed in Japanese Patent Application Laid-Open No. 10-49990.

While the speed of such an optical disk recording apparatus for recording data by the ZCLV system is increasing, media having poor mechanical characteristics, that is, so-called poor media, are not completely excluded from the market. Further, even for optical disks of the same type, variations in mechanical characteristics occur due to manufacturing variations. In addition, the assembling accuracy of the drive also varies, and the chucking accuracy (the amount of displacement between the center of the optical disk and the rotation center of the motor) when loading the optical disk varies, and the relative mechanical accuracy of the optical disk varies. There is also. Further, there is a problem that the maximum writable speed of the optical disc recording apparatus varies due to these manufacturing variation factors.

An object of the present invention is to optimize the recording speed in each zone when performing ZCLV recording.
It is to enable high-speed recording without causing the servo to come off.

An object of the present invention is to perform recording at an optimum recording speed for each manufacturer or media type of an optical disc.

An object of the present invention is to make it possible to perform CLV recording without setting a zone on an optical disk in addition to ZCLV recording.

An object of the present invention is to optimize the recording speed in each zone by gradually decreasing the recording speed in accordance with the degree of disturbance of the servo signal, and to achieve high-speed recording without causing servo departure. It is to do.

An object of the present invention is to perform recording with an optimum recording power according to a recording speed.

SUMMARY OF THE INVENTION An object of the present invention is to verify servo followability without causing servo deviating.

An object of the present invention is to verify servo followability by detecting servo signal disturbance in the tracking direction.

SUMMARY OF THE INVENTION An object of the present invention is to verify servo followability by detecting disturbance of a servo signal in a focus direction.

SUMMARY OF THE INVENTION An object of the present invention is to verify servo followability with high reliability by detecting servo signal disturbance in both the tracking direction and the focus direction.

An object of the present invention is to enable a user to be notified that the actual recording speed differs from the recording speed expected by the user.

[0017]

According to a first aspect of the present invention, there is provided an optical disc apparatus for recording data by emitting light from a light emitting element to a write-once or rewritable optical disc which is driven to rotate. A motor to be driven; servo means capable of servo-driving the motor so as to rotate the optical disc in a CLV manner; and positions of a plurality of zones obtained by dividing a data recordable area of the optical disc from an inner circumference to an outer circumference. A first table storing a plurality of pattern modes in which the recording speed for each zone is associated with the recording, and storing a plurality of types of the optical disc in association with any one of the plurality of modes; A second table, a type determining means for determining a type of the optical disk on which the recording is performed, and a position on the optical disk. Position detecting means and, said the mode associated with the determination is type second to
Mode setting means for reading the mode from the first table and setting the mode as a mode for recording on the optical disk; and any one of the positions detected by the position detection means according to the set mode. While determining whether a zone is a zone, a CLV (Constant Linea
rVelocity) CLV control means for controlling the servo means to perform data recording, and disturbance detection means for detecting disturbance of a servo signal in the servo means at a recording speed set by the mode setting means. An optical disc device comprising: a first speed reduction unit configured to reduce a recording speed when the servo unit is controlled by the CLV control unit in accordance with the detected disturbance.

Therefore, when performing recording on the optical disk, the servo tracking performance is verified at the recording speed at which the recording is actually performed for each zone, and the fluctuation due to the manufacturing variation of the optical disk or the like is absorbed to make the recording in each zone. Since the recording speed can be optimized, the servo will not come off
High-speed recording can be performed.

According to a second aspect of the present invention, in the optical disk device according to the first aspect, the type determining means determines a type of a manufacturer or a media type of the optical disk as the type. I do.

Therefore, recording can be performed at an optimum recording speed for each manufacturer or media type of the optical disk.

According to a third aspect of the present invention, in the optical disk device according to the first or second aspect, the first table includes a plurality of divided data recordable areas of the optical disc divided from an inner circumference to an outer circumference. The presence or absence of setting of the zone and the position of each zone when performing the setting, the single recording speed when performing the recording when the zone is not set, and the recording when the setting of the zone is performed A plurality of pattern modes respectively associated with the recording speed for each zone when performing the zone setting. The CLV control unit sets the zone to the mode set by the mode setting unit. When there is no data, the optical disc is recorded on the optical disc at the single recording speed stored in the mode.
The servo means is controlled so as to perform data recording by the LV system, and when the zone is set, the zone is set for each zone while judging which zone is from the position detected by the position detecting means. The servo means is controlled so as to perform data recording in each zone at the recording speed according to the CLV method, and the disturbance detecting means is provided when the zone is not set in the mode set by the mode setting means. When the zone is set at the single recording speed stored in the mode, the disturbance of the servo signal in the servo means is detected at the recording speed set for each zone. It is characterized by the following.

Therefore, it is also possible to perform CLV recording without setting zones on the optical disk.

According to a fourth aspect of the present invention, in the optical disk device according to any one of the first to third aspects, the first speed reducing means controls the speed of the servo signal in accordance with a degree of disturbance of the servo signal. The recording speed is reduced stepwise.

Therefore, by gradually reducing the recording speed in accordance with the degree of disturbance of the servo signal, it is possible to optimize the recording speed in each zone and to perform high-speed recording without causing servo departure. it can.

According to a fifth aspect of the present invention, in the optical disk device according to any one of the first to fourth aspects, the light is emitted from the optical pickup according to the recording speed reduced by the first speed reducing means. Power control means for controlling the recording power of the recording light to be written.

Therefore, recording can be performed with the optimum recording power according to the recording speed.

According to a sixth aspect of the present invention, there is provided the optical disk device according to any one of the first to fifth aspects, wherein the optical disc drive is operated at a predetermined recording speed prior to detection by the disturbance detecting means.
OPC means for performing the C operation, OPC determining means for determining whether or not the OPC operation has been completed normally, and executing the OPC operation when it is determined that the OPC operation has not been completed normally in this determination. The re-OPC means for reducing the recording speed at the time of performing the OPC operation again by the OPC means, and when the OPC operation is performed again, the disturbance detecting means detects the disturbance of the servo signal. Setting the recording speed at the time of the OPC operation when the OPC operation is determined to be normally completed in the determination instead of the recording speed set by the mode setting means. And speed reduction means.

Therefore, even for a bad optical disk, the OPC is performed at the innermost peripheral portion where the optical disk rotates at the highest speed.
Since the recording speed is set to a value at which the operation can be completed, the servo tracking performance in the optical disk surface is verified, so that the servo tracking performance can be verified without causing a servo departure.

According to a seventh aspect of the present invention, in the optical disk device according to any one of the first to sixth aspects, a light receiving element for receiving reflected light of light emitted to the optical disk, and A track error signal generating means for generating a track error signal for detecting a track error of the optical disk, wherein the disturbance detecting means detects a disturbance of a servo signal in the servo means using the track error signal. And

Therefore, the servo followability can be verified by detecting a servo signal disturbance in the tracking direction.

According to an eighth aspect of the present invention, in the optical disk device according to any one of the first to sixth aspects, a light receiving element for receiving reflected light of light emitted to the optical disk, Focus error signal generation means for generating a focus error signal for detecting a focus error of the optical disk, the disturbance detection means,
It is characterized in that the servo error in the servo means is detected using the focus error signal.

Therefore, the servo followability can be verified by detecting the disturbance of the servo signal in the focus direction.

According to a ninth aspect of the present invention, in the optical disk device according to any one of the first to sixth aspects, a light receiving element for receiving a reflected light of the light emitted to the optical disk, A track error signal generating means for generating a track error signal for detecting a track error of the optical disc; and a focus error signal generating means for generating a focus error signal for detecting a focus error of the optical disc from the received light signal; The detecting means detects the disturbance of the servo signal in the servo means using the track error signal and the focus error signal.

Therefore, by detecting servo signal disturbances in both the tracking direction and the focus direction,
The servo tracking ability can be verified with high reliability.

The tenth aspect of the present invention is the first to ninth aspects.
In the optical disk device according to any one of the above, when the recording speed when controlling the servo unit is reduced by the first speed reduction unit, the notifying unit that outputs a signal for notifying the fact is output. It is characterized by having.

Therefore, it is possible to notify the user that the actual recording speed is different from the recording speed expected by the user.

The information processing apparatus may be provided with the optical disk device according to any one of claims 1 to 10 (claim 11).

According to a twelfth aspect of the present invention, in the optical disk recording method for recording data by emitting light from a light emitting element to a rotationally driven write-once or rewritable optical disk, the type of the optical disk for recording is determined. Type determination step, and a plurality of patterns in which the positions of a plurality of zones obtained by dividing the data recordable area of the optical disc from the inner circumference to the outer circumference and the recording speed for each zone when performing the recording are associated with each other. A first table storing a mode, and a second table storing a plurality of types of the optical disc in association with any one of the plurality of modes.
With reference to the table, the mode associated with the determined type is read from the second table, and the mode is read from the first table,
A mode setting step of setting as a mode for recording on the optical disc, and detecting a position on the optical disc to determine which zone is in accordance with the set mode from the detected position, and for each zone, CLV (Constant Linea) for each zone at the set recording speed
r Velocity)
A CLV control step of controlling a servo means capable of servo-driving a motor for rotating the optical disc so as to rotate the optical disc in a V system; and a servo in the servo means at a recording speed set in the mode setting step. A turbulence detection step of detecting turbulence of a signal, and a first speed reduction step of reducing a recording speed when the servo means is controlled by the CLV control means in accordance with the detected turbulence. This is an optical disc recording method characterized by the following.

Therefore, when performing recording on the optical disk, the servo followability is verified at the recording speed at which the recording is actually performed for each zone, and the fluctuation due to the manufacturing variation of the optical disk or the like is absorbed to make the recording in each zone. Since the recording speed can be optimized, the servo will not come off
High-speed recording can be performed.

According to a thirteenth aspect of the present invention, in the optical disk recording method according to the twelfth aspect, the type determining step includes determining the type of the optical disk manufacturer or the media type as the type. And

Therefore, recording can be performed at an optimum recording speed for each optical disk manufacturer or media type.

According to a fourteenth aspect of the present invention, in the optical disk recording method according to the twelfth or thirteenth aspect, the mode setting step includes, as the first table, a data recordable area of the optical disk on an inner circumferential side. The presence or absence of a plurality of zones divided on the outer peripheral side and the position of each zone when performing the setting, the single recording speed when performing the recording when the zone is not set, the When there is a setting, a mode storing a plurality of patterns respectively associated with the recording speed for each zone when performing the recording is used, and the CLV control step is set in the mode setting step. When the zone is not set in the mode, data is recorded on the optical disc by the CLV method at the single recording speed stored in the mode. The servo means is controlled as described above, and when the zone is set, while determining which zone is from the detected position, the CLV data is recorded for each zone at the recording speed set for each zone. The servo means is controlled so as to perform recording, and the disturbance detection step includes the step of setting the single mode stored in the mode when the mode set in the mode setting step does not include setting of the zone. When the zone is set at the recording speed, the disturbance of the servo signal in the servo means is detected at the recording speed set for each zone.

Therefore, it is also possible to perform CLV recording without setting zones on the optical disk.

The invention according to claim 15 is the first to third aspects of the present invention.
The optical disc recording method according to any one of the above,
The first speed reduction step is characterized in that the recording speed is reduced stepwise according to the degree of disturbance of the servo signal.

Therefore, by gradually decreasing the recording speed in accordance with the degree of disturbance of the servo signal, it is possible to optimize the recording speed in each zone and perform high-speed recording without causing servo departure. it can.

The invention according to claim 16 is the invention according to claims 12 to
15. The optical disc recording method according to any one of the fifteenth and fifteenth aspects, further comprising a power control step of controlling a recording power of recording light emitted from the optical pickup according to the recording speed reduced in the first speed reduction step. It is characterized by becoming.

Therefore, recording can be performed with the optimum recording power according to the recording speed.

The invention according to claim 17 is the invention according to claims 12 to
16. The optical disc recording method according to any one of claims 16, wherein an OPC step of executing an OPC operation at a predetermined recording speed prior to the detection in the disturbance detection step;
An OPC determination step of determining whether or not the operation has been completed normally; and if it is determined in this determination that the OPC operation has not been completed normally, the recording speed at the time of executing the OPC operation is reduced to reduce the OPC operation. The re-OPC step of executing the OPC operation again by the step, and when the OPC operation is executed again, the recording speed at which the disturbance of the servo signal is detected by the disturbance detection step is set by the mode setting means. Instead of the set recording speed, the OPC
A second speed reduction step of setting a recording speed at the time of the OPC operation when it is determined that the operation has been completed normally.

Therefore, even in the case of a poor optical disk, the OPC is performed at the innermost circumference where the optical disk rotates at the highest speed.
Since the recording speed is set to a value at which the operation can be completed, the servo tracking performance in the optical disk surface is verified, so that the servo tracking performance can be verified without causing a servo departure.

The invention according to claim 18 is the invention according to claims 12 to
17. The optical disc recording method according to any one of items 17, wherein a light receiving step of receiving a reflected light of the light emitted to the optical disc by a light receiving element, and a track error signal for detecting a track error of the optical disc based on the received light signal. Generating a track error signal, wherein the disturbance detecting step detects the disturbance of the servo signal in the servo means using the track error signal.

Therefore, the servo followability can be verified by detecting the servo signal disturbance in the tracking direction.

[0052] The invention according to claim 19 is the invention according to claims 12 to
17. The optical disk recording method according to any one of items 17, wherein a light receiving step of receiving reflected light of the light emitted to the optical disk by a light receiving element, and a track error signal for detecting a focus error of the optical disk from the received light signal. Generating a focus error signal, wherein the disturbance detecting step detects the disturbance of the servo signal in the servo means using the track error signal.

Therefore, the servo followability can be verified by detecting the servo signal disturbance in the focus direction.

The twentieth aspect of the present invention provides the twelfth aspect.
17. The optical disc recording method according to any one of items 17, wherein a light receiving step of receiving a reflected light of the light emitted to the optical disc by a light receiving element, and a track error signal for detecting a track error of the optical disc based on the received light signal. A track error signal generating step of generating a track error signal for detecting a focus error of the optical disc from the light receiving signal, wherein the disturbance detecting step includes the tracking error signal and the track error signal. It is characterized in that a disturbance of a servo signal in the servo means is detected using a focus error signal.

Therefore, by detecting servo signal disturbance in both the tracking direction and the focus direction,
The servo tracking ability can be verified with high reliability.

The invention described in claim 21 is based on claims 12 to
20. In the optical disk recording method according to any one of the above items 20, when the recording speed for controlling the servo means is reduced by the first speed reduction step, a signal for notifying the fact is output. The method is characterized by comprising a step.

Therefore, it is possible to notify the user that the actual recording speed is different from the recording speed expected by the user.

[0058]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment of the Invention] One embodiment of the present invention will be described as a first embodiment of the present invention.

FIG. 2 is a schematic block diagram showing the configuration of the optical disk device A according to the first embodiment. The optical disc device A is capable of recording data on a CD-R / RW (CD-Recordable / Rewritable), which is a write-once or rewritable optical disc.

As shown in FIG. 2, the optical disk 1 is driven to rotate by a spindle motor 2. The spindle motor 2 is driven by a motor driver 3 and
The optical disk 1 is controlled to rotate in a V (Constant Linear Velocity) system.

The optical pickup 5 emits a laser beam from a light emitting element serving as a laser light source such as a laser diode, focuses the laser beam on the recording surface of the optical disk 1 by an objective lens, and receives the reflected light by a light receiving element. The actuator is controlled by each servo means of a focus servo and a track servo to reproduce data recorded on the optical disk 1 and to record data on the optical disk 1.

At the time of data reproduction, the reproduction signal obtained by the optical pickup 5 is amplified by the read amplifier 6 and binarized, and then input to the CD decoder 7 to perform deinterleaving and error correction. Further, the data after the deinterleaving and error correction processing is stored in a CD-ROM decoder 8.
To perform error correction processing for improving data reliability.

Thereafter, the data processed by the CD-ROM decoder 8 is temporarily stored in the buffer RAM 10 by the buffer manager 9, and is transferred to the host computer (PC 71 described later) by the host interface 11 at a time when the data is prepared as sector data. In the case of music data, the data output from the CD decoder 7 is
The signal is input to the / A converter 12 to extract an analog audio signal.

On the other hand, during data recording, ATAPI or SC
Data sent from the host computer via the host interface 11 such as SI is temporarily stored in a buffer RAM.
The recording is started after the data is stored in 10. Before starting data recording, the PCA (Power Calibration
OPC (Optimum Power)
r Calibration) to determine the optimum recording power.

When recording data on the optical disc 1,
Recording is performed by the CLV method with a constant recording linear velocity, but the linear velocity can be changed stepwise (described later). The reference linear velocity (1 × speed) is 1.2 to 1.4 mm / sec.
EFM (Eight to E) with T to 11T width (1T = 231ns)
Fourteen Modulation) The pulse signal is recorded as a data pattern to be written on the optical disc 1. The EFM signal is composed of 14 bits of 8-bit data interleaved so as to be easily reproduced or recorded optically.
Modulated to bit data. Actually, in order to increase the recording speed, the recording is performed at a linear velocity that is an integral multiple of the reference velocity (for example, 1x, 2x, 4x, 8x, 12x, etc., where x represents a double velocity with respect to the reference velocity). Do. Although there are many optical disc apparatuses A having a plurality of recording speed modes, the optical disc apparatus A can also change the mode during data recording (described later).

The data recording starts when a certain amount of data has accumulated in the buffer RAM 10, but before that, the laser spot is positioned at the writing start point. The write start point is obtained by an ATIP (Absolute Time In Pre-groove) signal which is a wobble signal which has been previously engraved on the optical disc 1 by meandering of the track (pre-groove). The ATIP signal is time information indicating an absolute address on the optical disk. The ATIP decoder 13 extracts the information of the ATIP signal, detects the ATIP error, and measures the detection error rate of the ATIP signal.

The synchronization signal generated by the ATIP decoder 13 is input to the CD encoder 14 to enable writing of data at an accurate position. Buffer RAM
The data 10 is recorded on the optical disc 1 via the laser control circuit 16 and the optical pickup 5 after the error correction code is added or interleaved by the CD-ROM encoder 15 or the CD encoder 14.

The optical disk apparatus A has a CPU 17 and a ROM 18 for centrally controlling the operation of each unit.
And a microcomputer 20 comprising a RAM 19.

FIG. 3 is an explanatory diagram for comparing and explaining each data recording method on a CD. 3 (a) to 3 (d)
Shows changes in the disk rotation speed, recording speed, recording power, and sector length from the inner circumference to the outer circumference of the optical disk for each system. In the case of a CD, since the recording format is the CLV method, the sector length of the recorded optical disk is the same regardless of the recording method. 3A shows a general CLV system, FIG. 3B shows a general CAV system, and FIG. 3D shows a P-CAV (Partial CAV).
Each method is shown.

In the conventional general CLV system data recording (Write) shown in FIG. 3A, the number of disk rotations at the inner circumference of the optical disk is large. The rotation speed cannot be increased and the recording speed cannot be increased. This is not only due to the mechanical restriction due to the need for high torque, but also to the fact that the power consumption of the rotating system circuit (spindle motor and its motor driver) increases and exceeds the allowable power. It depends. In particular, notebook PCs have strict power consumption restrictions,
This is a major problem in the optical disk device A for a notebook PC.

Therefore, in the optical disc apparatus A according to the present embodiment, as shown in FIG. 3B, a plurality of recording zones are allocated within the surface of the optical disc 1, and the recording speed is switched for each zone. Recording is possible.

As a result, it is possible to suppress the number of rotations of the disk at the inner peripheral portion of the optical disk 1 and achieve an average recording speed close to the data recording by the CAV system by increasing the speed of data recording at the outer peripheral portion.

More specifically, for example, as shown in FIG. 3B, Z
It can be divided into three zones of 0, Z1, and Z2.
Then, the recording speed of each zone Z0, Z1, Z2 can be set to S1, S2, S3, respectively.

A problem in performing the ZCLV method is that continuity between the interleave and the data string must be maintained at the boundary between zones where the recording speed changes.

Generally, it takes a certain amount of time to settle the drive system that rotates the optical disk. Therefore, if a sudden shift is performed during data recording, the quality of data recording deteriorates, and data may not be reproduced. Therefore, it is necessary to temporarily stop recording at the boundary of each zone and restart data recording after setting a speed corresponding to a new zone.

Here, the recording interruption (pause) and the restart (restart) for ensuring interleave and continuity of the data string are performed by means as described below, so that the data is not interrupted even at the boundary of the zone. Enable to record a column.

FIG. 4 is a block diagram of a circuit example for realizing such a pause / restart function. That is, since the host computer always sends data continuously, the CD-ROM encoder 15 and the CD encoder 14
It is easy to separate the physical write units if has a pause function. In the circuit of FIG. 4, when the -Pause signal is input to the AND circuit 31, the CD-ROM encoder 15 and the CIRC (in the CD encoder 14)
(Cross Interleave Read-Solomon Code) Encoder 3
2, the input of the clock signal to CD-R is interrupted.
The OM encoder 15 and the CIRC encoder 32 stop the encoding operation and also stop outputting the recording data (Write Data). Also, the gate signal (Write Gate) output from the CIRC encoder 32 and enabled to record data by becoming active is masked by the AND circuit 33 by the -Pause signal, so the data recording itself on the optical disc 1 is also interrupted. Is done. However, since the data being encoded remains in the buffer RAM 10 as it is, -P
When the ause signal is released, the next record data is output,
The writing to the optical disc 1 is restarted with the release of the Write Gate mask. However, the pause and restart of writing require that the -Pause signal be highly synchronized, and the timing at which the -Pause signal enters (the pause operation starts) is performed in sector units.

Here, the data configuration unit of the CD will be briefly described. That is, 1 second = 75 sectors (subcode frame), 1 sector = 98 EFM frame (hereinafter simply referred to as frame), 1 frame = 588 channel bits (588T), and each synchronization signal is transmitted by subcode sync (sector sync). A) Clock, frame sync clock. The absolute time information on the optical disc 1 obtained from the ATIP is in units of sectors, and when performing normal data recording without a pause, the time of the ATIP and the time of the CD encoder 14 are combined, that is, the ATIP is used.
The data is recorded while synchronizing the signal with the subcode sync clock of the recording data. In this case, a shift of about several frames is allowed. However, posing as described above,
When the restart is performed, a more precise recording restart position accuracy of about several channel bits is required.

The timing detection circuit 21 shown in FIG. 5 precisely matches the end of the data just written in order to determine the accurate write start position. This is a circuit that counts a frame sync clock and generates a timing signal for giving a data recording start timing. FIG. 6 is a timing chart of each signal.

That is, the frame offset register 4
1 is set to the number of frame sync clocks from the subcode sync clock to the frame sync clock of the frame (Fr) 25 which is the end of the previous data recording. In the clock offset register 42, the number of write reference clocks (channel bits) from the frame sync clock of Fr25 to the data recording start position is set.

In order to restart the data recording,
The seek operation is performed up to an address at which data recording on the optical disc 1 is restarted. The seek operation is performed based on the address information of the ATIP or the subcode Q channel. When the address of the write start sector-1 is detected, a load signal is output from the AND circuit 45 to the frame offset register 41, and the value of the frame offset register 41 is changed to the 5-bit DOWN counter 43 at the first subcode sync clock.
Is loaded. And a 5-bit DOWN counter 43
Is decremented by the frame sync clock. When the value of the 5-bit DOWN counter 43 becomes 0, a load signal is output to the 11-bit DOWN counter 44 via the inverter 46, and the value of the clock offset register 42 is loaded to the 11-bit DOWN counter 44. Further, the input of the frame sync clock to the 5-bit DOWN counter 43 via the AND circuit 47 is stopped. And an 11-bit DOWN counter 4
4 is decremented by the write reference clock. When the value of the 11-bit DOWN counter 44 becomes 0, a write start signal is output via the inverter 48. Further, the input of the write reference clock to the 11-bit DOWN counter 44 via the AND circuit 49 is stopped. The -Pause signal is released by this write start signal. The values loaded to the offset registers 41 and 42 are merely examples, and the values are determined by design according to the delay time from the subcode sync clock to the input of the -Pause signal and the system.

That is, the frame sync clock obtained by reading out the data recorded on the optical disk 1 immediately before the pause is counted, and a certain amount of delay which is the encoder clock is further delayed, so that the restart timing is obtained. is there. Thus, in the above example, data recording is restarted from Er26.

As described above, in the optical disc apparatus A, a plurality of zones can be set from the innermost circumference to the outermost circumference of the optical disc 1, and the recording speed can be set for each zone. When performing data recording in the ZCLV format, the optical disc device A
For example, a table 51 which is a first table in which five modes of modes 1 to 5 are registered as shown in FIG.
18 as fixed data.

In the example of FIG. 7, in each of modes 1 to 5,
The time on the optical disc 1 indicating the boundary position of the zone division (Ch
anging Point) t1, t2, and recording speed (Wr
iteSpeed) S1 to S3 can be set.

In this example, in mode 1, the times t1 and t2 are not set, that is, zone division is not performed, and the recording speeds S1 to S3 are 8x, that is, 8xCLV recording is performed over the entire surface of the optical disc 1.

In the mode 2, only the time t1 is set to 5 minutes, and the zone Z extends from the innermost circumference of the disc to the position of 5 minutes.
1, and thereafter, are divided into zones Z2.
The recording speed is 8x for S1 and S2, and 12x for S3. 8xCLV recording is performed in zone Z1, and 12x in zone Z2.
Perform CLV recording.

In mode 3, 12 × CLV recording is performed over the entire surface of the optical disk 1 without performing zone division.

In mode 4, zone Z1 extends from the innermost periphery of the disc to the one-minute position, zone Z2 extends from the one-minute position to the tenth-minute position, and zone Z3 extends from the tenth-minute position to the outermost periphery. 20xCLV recording is performed in zone Z2, and 24xCLV recording is performed in zone Z3.

In mode 5, the zone Z1 extends from the innermost circumference of the disc to the 15th minute position, and the zone Z2 extends from the 15th minute position to the outermost circumference. In the zone Z1, 20 × CLV recording is performed, and in the zone Z2, 24 × CLV recording is performed.

As described above, the range of each zone is determined by means of the time (or address) on the optical disk 1 (the current time on the optical disk 1 is, for example, A
In addition to the absolute time on the optical disk 1 indicated by the TIP signal, the position can be known by detecting the rotation of a seek motor that moves the optical pickup 5 to the radius of the optical disk 1 in addition to the radial position of the optical disk 1. The means to decide by is also considered.

The table 52 shown in FIG.
Is also stored. In this table 52, the magnitude of the recording power output by the light emitting element of the optical pickup 5 when recording on the optical disc 1 is registered for each recording speed used in the optical disc apparatus A. FIG. 8 shows that the recording power obtained by performing OPC at a recording speed of 8 × is 25.0 m.
This is an example in the case of W. The recording power of 12x to 24x is obtained by multiplying the recording power at 8x by 25.0 mW by a predetermined constant. This constant is, for example, 1
In the case of 2 ×, the square root of the ratio between 8 × and 12 × can be obtained as “√ (12/8) = 1.22”. When the multiplier is multiplied by the recording power of 25.0 mW at 8x, the recording power at 12x is 30.5 mW. Similarly, 16x, 20
The recording power is also obtained for x and 24x, and the table 52 registers the recording power corresponding to each recording speed.

Further, the ROM 18 stores the second
Is also stored. In this table 52, the type (manufacturer, media type, etc.) of the optical disc 1 and one of the modes stored in the table 51 are stored in association with each other.

The type of the optical disk 1 can be determined by reading the ATIP code in the lead-in area of the optical disk 1.

Next, the operation at the time of recording by the optical disk device A will be described with reference to the flowchart of FIG.

As shown in FIG. 10, when the optical disk 1 is loaded on the optical disk (Y in step S1), the CPU 17 performs a Read Toc operation, reads the ATIP code in the lead-in area of the optical disk 1, and reads the ATIP code. Name,
By reading information indicating the type of the optical disc 1, such as the media type, and comparing this information with the table 53,
The type of the optical disc 1 is determined (step S2). The position at which data is recorded on the optical disk 1 is detected based on time, radius, and the like on the optical disk 1 by known means. This implements a position detecting means. Step S2 implements a type determining unit and a type determining step. Then, for the mode corresponding to the type in the table 53, the recording speeds S1 to S3 and the positions t1 and t2 registered in the table 51 are read (Step S).
3). Step S3 implements a mode setting means and a mode setting step.

Next, the read recording speeds S1 to S3,
Based on the positions t1 and t2, the disturbance of the servo signal by the servo means 4 is checked as follows (the details will be described later).

That is, in the mode, the positions t1 and t1
If there is no setting of 2 (N in step S4), the optical disk device A is driven at the recording speed S1 to perform a servo check (step S5).

When the position t1 or t2 is set in the mode (Y in step S4), the optical disc apparatus A is driven at the recording speed S1 in the area (zone Z0) before the positions t1 and t2. A servo check is performed (step S6). Next, when the position t1 is set (Y in step S7), the area after the position t1 (zone Z) is set.
In 1), the optical disc device A is driven at the recording speed S2 to perform a servo check (step S8). When the position t2 is set (Y in step S9), the servo check is performed by driving the optical disk device A at the recording speed S3 in the area (zone Z1 or Z2) after the position t2 (step S10). Step S
6, S8 and S10 realize a disturbance detecting means and a disturbance detecting step.

This will be specifically described with reference to the example of the table 51. In the case of the mode 1, since the position t1 or t2 is not set, the servo check is performed at the recording speed “S1 = 8 × CLV”. In the case of mode 4, the recording speed “S1 = 16 × CLV” is used in the area (zone Z0) before one minute, and the recording speed “S1” is used in the area (zone Z1) after one minute and before ten minutes.
2 = 20 × CLV ”and the area after 10 minutes (Zone Z
In 2), servo checks are performed at the recording speed “S3 = 24 × CLV”.

The level of the servo disturbance due to the servo check is collected in steps S6, S8 and S10, for example, in three stages. The level of this servo disturbance is shown in FIG.
1, a table 54 constructed in the RAM 19 illustrated in FIG.
To record. That is, level 0 is good, level 1 is bad, and level 2 is very bad. And level 1
Is detected, the recording speed is reduced by one level to limit
In addition, when level 2 is detected, the recording speed is limited from the recording speeds S1 to S3 set in each mode according to the level of the servo disturbance due to the servo check, such as limiting the recording speed by two steps. . Specifically, the following processing is performed.

That is, in the table 54, the zone on the optical disk 1, the position on the optical disk 1, and the servo disturbance level are registered in association with each other. In this example, for zones longer than 20 minutes, servo checks are performed every 20 minutes. The original recording speed (original recording speed) set in the mode of the table 51 for each zone is also registered for each zone. For each zone, when the servo disturbance level is level 1, the same recording speed as the original recording speed is registered as the optimum recording speed,
At the level 2, the recording speed one step lower than the original recording speed (1
At 6x, 12x) is registered as the optimum recording speed, and at level 3, a recording speed two steps lower than the original recording speed (8x at 16x) is registered as the optimum recording speed in the table 54 (step S11). Step S11 implements a first speed reduction unit and a first speed reduction step.

When the recording speed one step or two steps lower is registered as the optimum recording speed in the table 54 (Y in step S12), the recording speed is sent to the host computer (PC 71 described later) via the host interface 11. A signal notifying that the operation is delayed is output (step S1).
3). On the host computer side, the optical disc device A is caused to perform a recording operation by the writer software running on the host computer. When the signal notifying that the recording speed is reduced is received, the writer software executes A message to the effect that the recording on the optical disc 1 may be slower than the selected speed may be displayed on the display to alert the user.

After the warning is issued, the recording on the optical disk 1 is performed with reference to the table 54. That is,
Referring to the table 54, the optimum recording speed registered for the first zone 1 is set as the recording speed of the optical disk device A, and the recording power corresponding to the recording speed is determined by referring to the table 52. A is set as the recording power of A (step S14), and the recording for zone 1 is performed at the set recording speed and recording power.
This is performed by the LV method (step S15). The power control means and the power control step are realized by step S14.
Step S15 implements the CLV control means and the CLV control process. When the recording of the zone 1 is completed by the step S15 (Y in the step S16) and the next zone exists (Y in the step S17), the next zone is registered with reference to the table 54 again. The optimum recording speed is set as the recording speed of the optical disk device A, and the recording power corresponding to the recording speed is set as the recording power of the optical disk device A with reference to the table 52 (step S14). The process of performing recording in zone 1 at the recording speed and recording power (step S15) is repeated up to the last zone (N in step S17), and the process ends.

By the processing shown in FIG. 10, the recording speed is set to the actual recording intended for each zone, and the followability of the servo is verified (steps S6, S8, S10).
It is possible to surely verify the servo tracking performance. As a result, the optimum recording speed is set according to the servo disturbance level indicating the degree of the servo disturbance (step S14), and the recording is performed (step S15) to optimize the recording speed in each zone. Without causing the servo to slip off
High-speed recording can be performed.

The servo checks performed in steps S6, S8, and S10 can be determined from the disturbance of the waveform of the tracking error (TE) signal that causes the light spot from the optical pickup 5 to follow the track of the optical disk 1.
That is, the TE signal is generated by the read amplifier 6 from the received signal divided and detected by the optical pickup 5 by a known means. As a result, a track error signal generating means and a track error signal generating step are realized. Normally, in the tracking-on state, as shown in FIG. 13A, the TE signal (reference numeral 56) maintains the 0 level with respect to the track center 55, but when the eccentricity increases at high speed rotation, the TE signal (reference numeral 57). Begins to disturb the level.

Therefore, the level of the disturbance of the waveform of the TE signal may be determined, for example, in three stages. Specifically, FIG.
The TE signal 60 that has been subjected to the band pass filter (BPF) as in (b) is compared with two thresholds 58 and 59, and the duty ratio of the output signal 61 (FIG. 13 (c)) obtained by this comparison is calculated. The level may be determined in three stages. This implements a disturbance detecting means and a disturbance detecting step.

In the example of the three-level setting shown in FIG. 14, the TE signal disturbance section of the 16 × recording zone has a ratio of 1
0% or less, level 0 (good), ratio is 10% to 20
If the ratio is less than%, the level is classified into three levels: level 1 (bad), and if the ratio is 20% or more, level 2 (very bad).
The TE signal disturbance section of the 20x recording zone is level 0 (good) if the ratio is 7.5% or less, level 1 (bad) if the ratio is 7.5% or more and less than 15%, and level if the ratio is 15% or more. It is classified into 2 (very bad) and 3 levels. Similarly, the TE signal disturbance section of the 24x recording zone is level 0 (good) if the ratio is 5% or less, level 1 (bad) if the ratio is 5% or more and less than 10%, and level 2 (very bad) if the ratio is 10% or more. Bad) and three levels.

FIG. 15 shows a case where the optical disk device A is mounted.
FIG. 2 is a perspective view of a personal computer (PC) 71 that implements the information processing apparatus of the present invention. The PC 71 can control the optical disc device A to record data on the optical disc 1.

[Second Embodiment of the Invention] Another embodiment will be described as a second embodiment of the present invention.

Regarding the points in which the second embodiment is common to the first embodiment, the same reference numerals are used as in the first embodiment, and the detailed description is omitted.

The second embodiment is different from the first embodiment in that the second embodiment differs from the first embodiment in that the processing described with reference to FIG.
6. The processing in FIG. 17 is performed. In FIGS. 16 and 17, the steps denoted by the same reference numerals as those in FIG.

That is, prior to recording on the optical disc 1, the optical disc apparatus A performs an OPC operation to calculate an optimum recording power. However, since the ZCLV recording is performed, the recording speed can be changed up to three levels. So this OP
In the C operation, the OPC operation is performed at the minimum recording speed of the mode read in the step S3 before performing the servo check after the step S6 (step S18). Then, it is determined whether or not this OPC operation has been completed normally without causing a servo error or the like in the servo means 4 (step S19).

When the operation has been completed normally (Y in step S19), servo checks after step S6 are performed. When an abnormality such as the occurrence of a servo error occurs, the recording speed is increased by one step (for example, 12x for 16x). Is lowered (step S20), and the OPC operation is performed again (step S20).
18). The OPC means and the OPC process are realized in step S18, and the OPC determination means and the OP
The C determination process is realized, and the OP
C determination means realizes a re-OPC determination step, and a step S2
0 implements a second speed reduction means and a second speed reduction step.

As described above, when the recording speed is reduced (step S20) and the OPC operation is performed (step S2).
1) The servo check of each zone is performed at the recording speed at which the OPC operation can be normally completed. For example, 16
When the OPC operation can be completed normally in x, all 16
Perform servo check with x. That is, when the position t1 or t2 is set in the mode (step S2
2), the area before the positions t1 and t2 (zone Z
At 0), the optical disc device A is driven at the recording speed at which the OPC operation can be normally completed, and a servo check is performed (step S23). Next, when the position t1 is set (Y in step S24), the optical disk device A is driven at the recording speed at which the OPC operation can be normally completed in the area (zone Z1) after the position t1, and the servo is performed. A check is performed (step S25). And the position t
If there is a setting of 2 (Y in step S26), the position t
In the area after zone 2 (zone Z1 or Z2), OP
The servo check is performed by driving the optical disc device A at the recording speed at which the C operation was successfully completed (step S
27).

Even when the position t1 or t2 is not set (N in step S22), the optical disk device A is driven at the recording speed at which the OPC operation can be normally completed, and the servo check is performed (step S28). Step S2
3, S25, S27, and S28 realize a disturbance detecting means and a disturbance detecting step.

According to the optical disc apparatus A, even if the optical disc 1 is inferior, the recording speed is set to a value at which the OPC operation can be completed at the innermost peripheral portion where the optical disc 1 rotates at the highest speed. (Steps S23, S25, S27, S28), the spindle motor 2 can verify the servo followability without causing the servo to come off.

[Third Embodiment of the Invention] Another embodiment will be described as a third embodiment of the present invention.

The points in which the third embodiment is common to the first and second embodiments are denoted by the same reference numerals as those in the first and second embodiments, and a detailed description is omitted.

The third embodiment differs from the first and second embodiments in that the servo check performed in steps S6, S8, and S10 is not determined based on the TE signal waveform disturbance, but a focus error (FE). The point is to judge from the signal waveform disorder.

That is, the signal divided and detected by the optical pickup 5 is input to the read amplifier 6 to generate an FE signal. Thus, a focus error signal generation unit and a focus error signal generation step are realized. Normally, in the focus-on state, as shown in FIG. 18, the FE signal (reference numeral 63) maintains the 0 level with respect to the track center 62. The level of reference numeral 64) starts to be disturbed.

Therefore, the level of the disturbance of the waveform of the FE signal may be determined, for example, in three stages. More specifically, as shown in FIG. 19, three levels are set according to the level of the amplitude FE pp of the FE signal.
The level may be divided into stages. This implements a disturbance detecting means and a disturbance detecting step.

[Fourth Embodiment of the Invention] Another embodiment will be described as a fourth embodiment of the invention.

Regarding the points in which the fourth embodiment is common to the first to third embodiments, the same reference numerals are used as in the first to third embodiments, and the detailed description is omitted.

The fourth embodiment differs from the first to third embodiments in that the servo checks performed in steps S6, S8, and S10 are performed by monitoring the servo disturbance of both the TE signal and the FE signal. That is, the determination is performed in three stages according to the level of the disturbance of the servo signal.

More specifically, as shown in FIG. 20, when the waveform disturbance of the TE signal and the waveform disturbance of the FE signal have counted the level 1 at the 50-minute position and the 70-minute position of the zone Z3 (this means that The disturbance detecting means and the disturbance detecting step are realized.), And the optimum recording speed in the zone Z3 is lowered by one step so that recording is performed at 20 × CLV.

Therefore, according to the optical disk device A, the servo followability can be verified with high reliability by detecting the servo signal disturbance in both the tracking direction and the focus direction.

[0127]

According to the first aspect of the present invention, when recording is performed on an optical disk, servo followability is verified at a recording speed at which actual recording is to be performed for each zone, and variations in optical disk production due to variations in the optical disk production, etc. Since the recording speed in each zone can be optimized by absorbing the fluctuation, high-speed recording can be performed without causing a servo departure.

According to a second aspect of the present invention, in the optical disk device according to the first aspect, recording can be performed at an optimum recording speed for each optical disk manufacturer or media type.

According to a third aspect of the present invention, in the optical disk device according to the first or second aspect, it is also possible to perform CLV recording without setting a zone on the optical disk.

According to a fourth aspect of the present invention, in the optical disk device according to any one of the first to third aspects, the recording speed is reduced stepwise according to the degree of disturbance of the servo signal, so that By optimizing the recording speed in the zone, high-speed recording can be performed without causing servo deviating.

According to a fifth aspect of the present invention, in the optical disk device according to any one of the first to fourth aspects, recording can be performed with an optimum recording power according to a recording speed.

According to a sixth aspect of the present invention, in the optical disk device according to any one of the first to fifth aspects, the innermost peripheral portion where the optical disk rotates at the highest speed even with a poor optical disk. Since the servo tracking property within the optical disk surface is verified by setting the recording speed at which the OPC operation can be completed, the servo tracking property can be verified without causing the servo to go off.

According to a seventh aspect of the present invention, in the optical disk device according to any one of the first to sixth aspects, servo followability can be verified by detecting a servo signal disturbance in a tracking direction. .

According to an eighth aspect of the present invention, in the optical disk device according to any one of the first to sixth aspects, servo followability can be verified by detecting a servo signal disturbance in a focus direction. .

According to a ninth aspect of the present invention, in the optical disk device according to any one of the first to sixth aspects, the servo signal disturbance in both the tracking direction and the focus direction is detected, thereby achieving high reliability. The ability to follow the servo can be verified.

The invention according to claim 10 is the invention according to claims 1 to 9
In the optical disc device according to any one of the above, it is possible to notify the user that the recording speed expected by the user is different from the actual recording speed.

The eleventh aspect of the present invention relates to the first to the first aspects.
0 has the same effect as the invention described in any one of 0.

According to the twelfth aspect of the present invention, when recording is performed on an optical disk, the servo followability is verified at the recording speed at which recording is actually performed for each zone, and fluctuations due to manufacturing variations of the optical disk and the like are verified. Since the recording speed can be optimized in each zone by absorbing the light, high-speed recording can be performed without causing the servo to go off.

According to a thirteenth aspect of the present invention, in the optical disk recording method according to the twelfth aspect, recording can be performed at an optimum recording speed for each optical disk manufacturer or media type.

According to a fourteenth aspect of the present invention, in the optical disk recording method according to the twelfth or thirteenth aspect, it is also possible to perform CLV recording without setting a zone on the optical disk.

The invention according to claim 15 is the invention according to claims 1 to 3.
The optical disc recording method according to any one of the above,
By gradually reducing the recording speed in accordance with the degree of the servo signal disturbance, the recording speed in each zone can be optimized, and high-speed recording can be performed without causing servo departure.

The invention according to claim 16 is the invention according to claims 12 to
In the optical disk recording method according to any one of the first to fifteen, recording can be performed with an optimum recording power according to a recording speed.

The invention according to claim 17 is the invention according to claims 12 to
16. In the optical disk recording method according to any one of Items 16, the recording speed is set such that the OPC operation can be completed at the innermost circumference where the optical disk rotates at the highest speed, even for a poor optical disk. Since the followability of the servo is verified, the followability of the servo can be verified without causing the servo to go off.

The invention according to claim 18 is the invention according to claims 12 to
In the optical disk recording method according to any one of the items 17, the servo followability can be verified by detecting a servo signal disturbance in the tracking direction.

The invention according to claim 19 is the invention according to claims 12 to
In the optical disk recording method according to any one of the items 17, the servo followability can be verified by detecting a servo signal disturbance in the focus direction.

The invention according to claim 20 is the invention according to claims 12 to
In the optical disc recording method according to any one of the first to seventeenth aspects, by detecting a servo signal disturbance in both the tracking direction and the focus direction, it is possible to verify the servo followability with high reliability.

The invention described in claim 21 is the invention according to claims 12 to
20. In the optical disc recording method according to any one of 20., the user can be notified that the recording speed expected by the user is different from the actual recording speed.

[Brief description of the drawings]

FIG. 1 is a graph illustrating an example of ZCLV recording.

FIG. 2 is a schematic block diagram illustrating a configuration of an optical disc device according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram illustrating each recording method of an optical disc.

FIG. 4 is a block diagram of an example of a circuit that realizes a pause and restart function in the optical disc device.

FIG. 5 is a block diagram of a timing detection circuit of the optical disk device.

FIG. 6 is a timing chart illustrating the operation of the timing detection circuit.

FIG. 7 is an explanatory diagram illustrating a table used in a process performed by the optical disc device.

FIG. 8 is an explanatory diagram of the same.

FIG. 9 is an explanatory diagram of the same.

FIG. 10 is a flowchart illustrating a recording operation of the optical disc device.

FIG. 11 is an explanatory diagram illustrating a table used in a process performed by the optical disc device.

FIG. 12 is an explanatory diagram of the same.

FIG. 13 is a graph illustrating a servo check performed by the optical disc device.

FIG. 14 is an explanatory diagram illustrating the servo check.

FIG. 15 is a perspective view of a personal computer equipped with the optical disk device.

FIG. 16 is a flowchart illustrating a recording operation of the optical disc device according to the second embodiment of the present invention.

FIG. 17 is a flowchart of the same.

FIG. 18 is an explanatory diagram illustrating a servo check performed by an optical disk device according to a third embodiment of the present invention;

FIG. 19 is an explanatory diagram of the same.

FIG. 20 is an explanatory diagram illustrating a servo check performed by an optical disc device according to Embodiment 4 of the present invention;

[Explanation of symbols]

 Reference Signs List 1 optical disk 2 motor 4 servo means 51 first table 52 second table A optical disk device

Continued on front page F-term (reference) BB02 DA01 EA01 EA10 MA26

Claims (21)

[Claims] 1. An optical disk device for recording data by emitting light from a light emitting element to a rotationally driven write-once or rewritable optical disk, comprising: a motor for rotating the optical disk; and a CLV method for rotating the optical disk. Servo means capable of servo-driving the motor, the position of a plurality of zones obtained by dividing the data recordable area of the optical disc from the inner circumference to the outer circumference, and the recording speed for each zone when performing the recording. A first table storing a plurality of patterns of modes in which the plurality of modes are associated with each other; a second table storing a plurality of types of the optical disc in association with any of the plurality of modes; Type determining means for determining the type of the optical disc; position detecting means for detecting a position on the optical disc; Mode setting means for reading the mode corresponding to the type from the second table, reading the mode from the first table, and setting the mode as a mode for recording on the optical disc; The zone is determined from the position detected by the position detecting means in accordance with the zone, and the CL is determined for each zone at the recording speed set for each zone.
CLV control means for controlling the servo means so as to perform data recording by a V (Constant Linear Velocity) method; and disturbance for detecting disturbance of a servo signal in the servo means at a recording speed set by the mode setting means. An optical disc device comprising: a detection unit; and a first speed reduction unit that reduces a recording speed when the servo unit is controlled by the CLV control unit in accordance with the detected disturbance. 2. The optical disk device according to claim 1, wherein the type determination unit determines the type of the optical disk manufacturer or the media type as the type. 3. The first table includes information indicating whether or not a plurality of zones obtained by dividing a data recordable area of the optical disc from an inner peripheral side to an outer peripheral side are set, and when the setting is performed, the position of each zone is: When the zone is not set, a plurality of patterns respectively associated with the single recording speed when performing the recording, and when the zone is set, the recording speed for each zone when performing the recording is set. When the mode set by the mode setting means does not include setting of the zone, the CLV control means performs the recording at the single recording speed stored in the mode. The servo means is controlled so as to perform data recording on the optical disk by the CLV method, and when the zone is set, any zone is detected from the position detected by the position detection means. The servo means is controlled so as to perform data recording according to the CLV method for each zone at a recording speed set for each zone while judging whether or not there is any data. When there is no zone setting in the mode to be set, the servo is set at the single recording speed stored in the mode, and when the zone is set, the servo is set at the recording speed set for each zone. 3. The optical disk device according to claim 1, wherein the optical disk device detects a disturbance of a servo signal in the means. 4. The apparatus according to claim 1, wherein said first speed reducing means reduces the recording speed in a stepwise manner in accordance with a degree of disturbance of said servo signal. An optical disk device as described in the above. 5. A power control unit for controlling a recording power of recording light emitted from the optical pickup according to a recording speed reduced by the first speed reduction unit. 5. The optical disk device according to any one of items 1 to 4, 6. An OPC means for executing an OPC operation at a predetermined recording speed prior to the detection by the disturbance detecting means, and an OP for determining whether or not the OPC operation has been completed normally.
C determination means, and when it is determined in this determination that the OPC operation has not been completed normally, the re-OPC means for reducing the recording speed when the OPC operation is performed and performing the OPC operation again by the OPC means When the OPC operation is performed again, the recording speed at which the disturbance detecting means detects the disturbance of the servo signal is replaced with the recording speed set by the mode setting means, And a second speed reduction means for setting a recording speed at the time of the OPC operation when it is determined that the OPC operation has been normally completed in (1). An optical disk device according to any one of the preceding claims. 7. A light receiving element for receiving reflected light of the light emitted to the optical disk, and a track error signal generating means for generating a track error signal for detecting a track error of the optical disk from the received light signal, 7. The optical disk device according to claim 1, wherein the disturbance detecting unit detects the disturbance of the servo signal in the servo unit using the track error signal. 8. A light receiving element for receiving reflected light of light emitted to the optical disk, and a focus error signal generating means for generating a focus error signal for detecting a focus error of the optical disk from the received light signal, 7. The optical disk device according to claim 1, wherein the disturbance detecting unit detects the disturbance of the servo signal in the servo unit using the focus error signal. 9. A light receiving element for receiving reflected light of light emitted to the optical disk, a track error signal generating means for generating a track error signal for detecting a track error of the optical disk from the light receiving signal, and a light receiving signal And a focus error signal generating means for generating a focus error signal for detecting a focus error of the optical disc from the optical disc. The disturbance detecting means uses the track error signal and the focus error signal to disturb the servo signal in the servo means. The optical disk device according to any one of claims 1 to 6, wherein the optical disk device detects (i). 10. When reducing the recording speed when controlling said servo means by said first speed reducing means,
The optical disk device according to any one of claims 1 to 9, further comprising a notifying unit that outputs a signal for notifying the fact. 11. An information device comprising the optical disk device according to claim 1, wherein the optical disk device can record data on the write-once or rewritable optical disk. Processing equipment. 12. An optical disk recording method for recording data by emitting light from a light emitting element to a rotationally driven write-once or rewritable optical disk, wherein: a type determining step of determining a type of the optical disk on which the recording is performed; A mode in which a plurality of pattern modes in which the positions of a plurality of zones obtained by dividing the data recordable area of the optical disc from the inner circumference to the outer circumference and the recording speed for each zone when performing the recording are stored is stored. One table, and
Referring to a second table storing a plurality of types of the optical disc in association with one of the plurality of modes, the mode associated with the determined type is determined from the second table. A mode setting step of reading and reading the mode from the first table, and setting the mode as a mode for recording on the optical disc; and detecting a position on the optical disc and, based on the detected position, according to the set mode. While judging which zone it is, the optical disk is rotated by the CLV method so that data is recorded by the CLV (Constant Linear Velocity) method for each zone at the recording speed set for each zone. CL for controlling servo means capable of servo-driving a motor for rotating and driving an optical disc
A V control step; a disturbance detection step of detecting disturbance of a servo signal in the servo means at a recording speed set in the mode setting step; and the CLV control means controls the servo means in accordance with the detected disturbance. An optical disc recording method, comprising: a first speed reduction step of reducing a recording speed when controlling. 13. The optical disk recording method according to claim 12, wherein the type determination step includes determining whether the type of the optical disk is a manufacturer or a media type as the type. 14. The mode setting step includes, as the first table, the presence / absence of setting of a plurality of zones obtained by dividing a data recordable area of the optical disc from an inner peripheral side to an outer peripheral side. The position of each zone is set to a single recording speed when performing the recording when the zone is not set, and to a recording speed for each zone when performing the recording when the zone is set, respectively. When the mode set in the mode setting step does not include setting of the zone, the CLV control step uses a mode storing a plurality of modes associated with each other. The servo means is controlled so that data is recorded on the optical disc by the CLV method at one recording speed, and when the zone is set, the position of the detected position is determined. While determining which one of zones, each zone at a recording speed set for each zone C
The servo unit is controlled so as to perform data recording by the LV system. In the disturbance detection step, when the zone set is not set in the mode set in the mode setting step, the disturbance is stored in the mode. 13. The apparatus according to claim 12, wherein when the zone is set at the single recording speed, a disturbance of a servo signal in the servo means is detected at a recording speed set for each zone. Or the optical disk recording method according to item 13. 15. The method according to claim 1, wherein in the first speed reduction step, the recording speed is reduced stepwise according to a degree of disturbance of the servo signal. The optical disc recording method according to the above. 16. A power control step of controlling a recording power of recording light emitted from the optical pickup according to a recording speed reduced in the first speed reduction step. 16. The optical disk recording method according to any one of Items 15 to 15, 17. An OPC step for executing an OPC operation at a predetermined recording speed prior to the detection in the disturbance detection step, and an OP for determining whether or not the OPC operation has been normally completed.
A C determining step; and a re-OPC step of reducing the recording speed at the time of executing the OPC operation and executing the OPC operation again by the OPC step when it is determined that the OPC operation is not completed normally in this determination. When the OPC operation is performed again, the recording speed for detecting the disturbance of the servo signal in the disturbance detecting step is replaced with the recording speed set by the mode setting means, 17. A second speed reduction step of setting a recording speed at the time of the OPC operation when it is determined that the OPC operation has been completed normally in the step (c). An optical disc recording method according to any one of claims 1 to 6. 18. A light receiving step of receiving reflected light of light emitted to the optical disk by a light receiving element, and a track error signal generating step of generating a track error signal for detecting a track error of the optical disk from the received light signal. 18. The optical disc recording method according to claim 12, wherein the disturbance detecting step detects the disturbance of the servo signal in the servo means using the track error signal. 19. A light receiving step of receiving a reflected light of light emitted to the optical disk by a light receiving element, and a focus error signal generating step of generating a track error signal for detecting a focus error of the optical disk from the received light signal. 18. The optical disc recording method according to claim 12, wherein the disturbance detecting step detects the disturbance of the servo signal in the servo means using the track error signal. 20. A light receiving step of receiving a reflected light of the light emitted to the optical disk by a light receiving element, a track error signal generating step of generating a track error signal for detecting a track error of the optical disk from the light receiving signal, A focus error signal generating step of generating a track error signal for detecting a focus error of the optical disc from the light receiving signal, wherein the disturbance detecting step includes the servo unit using the track error signal and the focus error signal. 18. The optical disk recording method according to claim 12, wherein the disturbance of the servo signal in the step (c) is detected. 21. When reducing the recording speed when controlling said servo means in said first speed reduction step,
21. The optical disc recording method according to claim 12, further comprising a notifying step of outputting a signal for notifying the fact.