JP2003272178A - Optical disk recording medium and drive apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk for recording data only at a true maximum speed. <P>SOLUTION: The optical disk recording medium is configured with: a center hole 34 opened in the center of an optical disk 30; a blank area 33 for recording nothing; a recording area 32 for recording data at the outermost circumference of which the recording speed is maximum; and an OPC area 31 for performing OPC for trial write at the outermost circumference at a recording speed. No data are recorded in areas toward the inner circumference from the recording area 32 to form a blank area. No coating is applied to the blank area or the blank area acts like a guide area in which addresses of recording areas of outer circumference are stored in advance. Thus, data are recorded only on outer circumferential parts and the inner circumferential part records management information to keep the transfer speed of the drive apparatus maximum. Further, since no coating is applied to the areas not in use, the cost of the optical disk can be reduced. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk recording medium and a drive device, and more particularly to ZCLV.
The present invention relates to a recording medium capable of high-speed recording of an optical disc according to the method.

[0002]

2. Description of the Related Art CD-R (Compact Disc-Recordable) /
A drive device typified by RW (ReWritable) for recording information on a medium having a spiral track is generally a constant linear velocity (CLV) system. In the CLV system, the length of the track passing over the pickup is controlled to be constant in a unit time. Therefore, when recording on the inner circumference of the medium, the rotation speed of the medium is fast, and the rotation becomes slower toward the outer circumference. Become. In recent years, it has become necessary to rotate the spindle motor at a higher speed as the competition for higher speed drive devices intensifies. CL
In the optical disk drive device adopting the V method, when viewed from the spindle motor, it is necessary to speed up the rotation when the pickup is recording on the inner circumference of the optical disk and slow the rotation when it is on the outer circumference. In order to increase the rotation speed, a motor, driver, or circuit corresponding to the high speed is used, and the system itself becomes larger and the cost increase is inevitable as compared with the case of only the low speed rotation.

In order to solve the above problems, Zone-C
A method called LV (ZCLV) has been put to practical use. In this method, the recording speed is slowed in the inner circumference, and is increased when recording from a certain position to the outer circumference. That is,
Since it is basically the CLV system, when recording on the innermost circumference, the spindle motor rotates at a high speed, and the rotation continuously slows as the recording position moves from there to the outer circumference. In the normal CLV method, the rotation speed continuously decreases to the outermost circumference, but in the ZCLV method, recording is temporarily stopped when the outer circumference reaches a certain position and the recording speed is increased. That is, the rotation speed of the spindle motor is increased at this position, recording is restarted when the rotation speed is increased, and the rotation speed is continuously reduced while recording toward the outer circumference. If there is a margin in processing the information to be recorded, the recording may be interrupted again, the recording speed may be increased (that is, the rotation speed may be increased), and the recording may be restarted. FIG. 2 is a diagram showing the relationship between the recording position and the rotation speed of the spindle motor in the ZCLV method. Since the density of the information recorded on the optical disk medium is the same in the entire circumference, it is easy to understand if it is considered as the length of the track passing over the pickup in a unit time. The relationship between the recording position r and the rotation speed R of the spindle motor when the recording speed is increased twice (positions of r2 and r3) from the innermost circumference to the outermost circumference is the spindle motor rotation speed at the recording position r1. Is set to R1, the rotation speed continuously decreases depending on the pickup position, and
At position 2, the speed drops to R2. When it reaches the position of r2, the recording is interrupted once and the recording speed is increased to R1.
Up to fast. Then, the rotation speed continuously decreases again from the position of r2 according to the position of the pickup, and when the pickup reaches the position of r3, the speed decreases to R2. At the position of r3, the recording is once interrupted again, and similarly, the recording speed is suddenly increased to R1 and the rotation speed is continuously decreased again from the position of r3 according to the position of the pickup. FIG. 3 is a diagram showing the relationship between the recording position r and the linear velocity (recording velocity) v in the ZCLV method. When the recording speed when the pickup is at the recording position r1 is v1, recording is performed at a constant recording speed v1 from the recording positions r1 to r2. When the pickup reaches the recording position r2, the recording is temporarily interrupted, the recording speed is increased to v2, and recording is performed at a constant recording speed. When the pickup reaches the recording position r3, the recording is temporarily interrupted, the recording speed is further increased to v3, and recording is performed at a constant recording speed. This is the ZCLV method
Since it is basically the CLV system, the recording speed is constant, and the recording speed is increased in the outer periphery from the position where the recording speed is increased, but the recording speed is constant until the next position where the recording speed is increased. With this technology, as shown in Figure 2,
Higher-speed recording can be realized while keeping the upper limit of the rotation speed of the spindle (R1 in this case) below a certain speed.

Further, in Japanese Patent Laid-Open No. 10-199114, in a recording / reproducing apparatus for a ZCLV type disk-shaped recording medium, when the recording / reproducing head is pulled into a target track, the current traced track is described. A technique for shortening the seek time regardless of the relationship between the zone to which it belongs and the target track and the zone to which it belongs is disclosed. According to this, first pull-in means for pulling the recording / reproducing head to the target track and pulling to the zone to which the target track belongs, and subsequent to the first pull-in means, pulling to the target track is performed. A recording / reproducing apparatus for a ZCLV type disc-shaped recording medium comprising a second pull-in means and a conversion table used in the first pull-in means for converting an address of a target track into a predetermined target address. However, in the method according to this publication, in the ZCLV recording method in which the recording speed is changed for each zone, the recording speed cannot but be slowed down due to the restriction of the performance of the rotary motor at the innermost circumference, and recording at the maximum rotation is not possible. Can not. Further, the same applicant has proposed a method of performing ZCLV recording by interrupting the data to be recorded, which guarantees continuity at an arbitrary position, and further restarting, and increasing the CLV speed at the restart.

[0005]

The contents for realizing ZCLV recording are disclosed in Japanese Patent Laid-Open No. 10-199114,
Further, as another method has been proposed by the same applicant, during ZCLV recording, the inner circumferential portion is slow and the outer circumferential portion is fast. This is mainly set by the upper limit of the speed of the rotary motor, and is set by the difference in the linear velocity depending on the radius between the inner peripheral portion and the outer peripheral portion. So, for example, 3
The 2X recording actually means the speed at the outer peripheral portion, and does not mean that the speed is recorded all over the disk. In view of the above problems, it is an object of the present invention to provide a disc that records only at the true maximum speed.

[0006]

In order to solve the above problems, the present invention provides an optical disk recording medium for recording a recording speed constant by dividing a recording surface of an optical recording medium into zones. A plurality of areas for sequentially recording at high speed from the innermost side to the outer side of the optical recording medium are provided, and the plurality of areas are test writing areas for determining the optical power to the signal recording area of the optical recording medium. A guide area for recording a guide signal in the signal recording area, and a signal recording area for recording a signal based on the test writing area and the guide area, the signal recording area being the outermost periphery of the optical recording medium. It is characterized in that it is formed only in a portion and that the recording speed of the signal recording area is recorded at the maximum recording speed of the optical recording medium. In the ZCLV system, recording is temporarily stopped when the outer circumference reaches a certain position, and the recording speed is increased. That is, the rotation speed of the spindle motor is increased at this position, recording is restarted when the rotation speed is increased, and the rotation speed is continuously reduced while recording toward the outer circumference. There are a plurality of such zones, and the recording speed is set to increase from the inner circumference to the outer circumference, and the maximum speed is set at the outermost circumference. Therefore, the recording speed is not recorded at the maximum speed in all zones, and the recording speed becomes lower on average. Therefore, if the recording is performed only on the outer peripheral portion where the recording speed is the highest, the maximum recording speed of the disc becomes the recording speed of the disc. According to this invention, the zone recording is performed by sequentially increasing the recording speed from the inner circumference, but the data is recorded only in the outer circumference and the management information is recorded in the inner circumference, thereby increasing the transfer speed of the drive device. Since it can be used at maximum, the writing time can be shortened. In the invention of claim 2, the test writing area, the guide area, and the signal recording area are sequentially arranged from the innermost peripheral side to the outer peripheral side of the optical recording medium, which is an effective means of the present invention. Is. Conventional ZCLV
The optical disc of the method has an OPC area on the inner circumference, and forms zones while sequentially increasing the recording speed from that area to the outer circumference, and temporarily decreases the rotation speed of the motor from the maximum speed to record a constant linear speed. Was. In the present invention, the OP of the inner circumference
From the area C to the recording area with the highest recording speed, a guide area for not recording data is provided, and a recording area for recording data is provided only in the outer peripheral zone with the highest recording speed. . According to this technical means, the OPC area, the guide area, and the signal recording area are sequentially formed from the innermost circumference side to the outer circumference side of the optical disc, so that the seek operation of the recording area is speeded up and the recording speed is increased. Can be recorded at maximum speed.

Further, the invention of claim 3 is an effective means of the present invention, wherein the guide region is formed in advance by a manufacturing process of an optical recording medium. Address information of the recording area is recorded in the guide area. In the present invention, since no data is recorded between the OPC area and the recording area, there is a possibility that the data area cannot be sought after the OPC is completed. Therefore,
In the meantime, an area in which only the address of the recording area is recorded is formed so that the seek operation can be performed quickly. And
It is more preferable to record the information in advance in the manufacturing process. According to such a technical means, since the guide area is formed in advance by the manufacturing process of the optical recording medium, the seek operation time can be shortened. Further, in the invention of claim 4, a recording film is coated only on the signal recording region, which is an effective means of the present invention. The structure of the optical disc of the present invention comprises an OPC area, a guide area, and a recording area. The actual data recording area is only the OPC area and the recording area, and no data is recorded in the guide area.
Further, the gold coating is sufficient only in the recording area.
According to such a technical means, since the gold recording film is coated only on the signal recording area, the cost of the optical disc can be reduced. Further, in the invention of claim 5, the signal recording area is formed by one zone, which is an effective means of the present invention. Data is recorded at the highest recording speed in the recording area. Then, at this time, the rotation speed of the motor decelerates from the maximum rotation for a while and reaches the minimum speed at the end of the zone. Therefore, the rotation speed of the motor does not increase again in the maximum speed zone, and the control is simple. According to such a technical means, the signal recording area is formed by one zone, so that the rotation control of the motor is easy.

The present invention is also effective in that the signal recording area is formed from an area capable of recording at a recording speed corresponding to the maximum speed of a rotary motor for rotating the optical recording medium. It is a means. The maximum rotation speed of the motor depends on the sensitivity characteristic of the recording medium. That is, when the sensitivity of the recording medium is low, the rotation speed on the inner circumference cannot be increased too much. On the contrary, when the sensitivity characteristic is high, the rotation speed can be increased. However, if a motor with a high rotation speed is used without any limitation, the cost of parts will rise. Generally, the maximum number of rotations of the motor is determined, and the recording area is determined by how much recording can be performed at the recording speed according to the number of rotations. According to such a technical means, the signal recording area is formed from an area capable of recording at a recording speed corresponding to the maximum speed of the rotation motor for rotating the optical disk, so that the recording area suitable for the sensitivity characteristic of the optical disk should be set. You can Also,
According to a seventh aspect of the present invention, in an optical disc recording medium in which a recording surface of the optical recording medium is zone-divided and recording is performed at a constant recording speed, an optical signal to a signal recording area of the optical recording medium is provided on an outermost peripheral side of the optical recording medium. Providing a test writing area to determine the power,
The signal recording area is provided on the inner peripheral side of the test writing area. This invention differs from the recording methods of claims 1 to 6 in that an OPC area is provided on the outermost circumference and a recording area is formed on the inner circumference side of the OPC area. Since it does not require space,
It is not necessary to record the address information of the recording area. According to this invention, the OPC area for determining the optical power to the signal recording area is provided on the outermost circumference side of the optical disc, and the signal recording area is provided on the inner circumference side of the OPC area. Since it is not necessary to record, the data recording operation can be performed immediately from the OPC operation.

According to the invention of claim 8, when data is recorded on the optical recording medium, the data is recorded from the outermost peripheral side to the inner peripheral side of the optical recording medium, and accordingly, the optical recording medium is recorded. It is also an effective means of the present invention that the rotational speed of the rotating rotary motor continuously increases as the recording position goes from the outermost peripheral side to the inner peripheral side. When recording from the inner circumference toward the outer circumference, the motor rotation speed is temporarily slowed down in order to keep the linear velocity constant. However, in the opposite case, that is, in the case of recording from the outer circumference to the inner circumference, it is necessary to increase the rotational speed of the motor for a while to keep the linear velocity constant. According to such a technical means, as the recording is performed from the outermost peripheral side of the optical disc toward the inner peripheral side, the rotation speed of the rotary motor for rotating the optical disc is continuous as the recording position goes from the outermost peripheral side to the inner peripheral side. Since the control is performed so as to be extremely fast, the recording linear velocity can be made constant. Further, the invention of claim 9 is also an effective means of the present invention, in which the inner peripheral side other than the signal recording area is set as a handwritten title area and the area is made transparent. The recording area is coated with a recording film such as gold plating. However, since the inner peripheral area is not an area for recording anything, it can be made transparent so that a handwritten title or the like can be recorded. According to such a technical means, the inner circumference side other than the signal recording area is set as a handwriting-capable title area, and by making this area transparent, when the title is recorded, the title can be confirmed from both front and back sides. According to a tenth aspect of the present invention, in an optical disc drive device using a rotation control method in which the recording surface of the optical recording medium is zone-divided to keep the linear velocity constant, the optical recording medium is mounted for the first time in the optical disc drive device. In this case, in order to match the performance of the optical recording medium, a recording speed constant area corresponding to the maximum speed of the rotary motor is found in accordance with the speed changing sequence of the optical disk drive device, and the recording speed constant area is previously located on the inner circumference side of the recording area. It is characterized in that the address information of the recording area is recorded. The optical disc has different recording sensitivity characteristics due to various factors such as its manufacturing process and material. Therefore, when a new optical disk is mounted on the optical drive device, the device side confirms the characteristics of the optical disk and finds an area where the recording speed corresponding to the maximum speed is constant. Then, if the start address of the area is recorded inside the recording area in advance, the recording area can be found immediately at the time of recording. According to this invention, when the optical disc is first mounted in the optical disc drive device, the recording speed constant region corresponding to the maximum speed of the rotary motor is adjusted in accordance with the speed change sequence of the optical disc drive device so as to match the performance of the optical disc. By recording and recording the address information of the recording area in advance on the inner circumference side of this recording area, the recording area can be found immediately at the time of recording.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings. However, the constituent elements, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely explanatory examples, not the gist of limiting the scope of the present invention thereto, unless specifically stated. . FIG. 1 is a block diagram showing the configuration of an optical disk drive device according to an embodiment of the present invention. The structure of the optical disk device 20 is a CD-R / RW drive and a DVD-RO.
This is achieved with an M-drive complex machine (combo drive).
An optical disk 1 such as a CD or a DVD, which is rotated by a spindle motor 2, and a ZCLV (Zone Constant Lin).
ear Velocity: constant linear velocity between zones) controlled spindle motor 2, driver 5 that drives an actuator (not shown) in optical pickup 3, servo circuit 9 that generates a signal for servo control to this driver 5. A built-in RF amplifier 6 for calculating each signal from a light receiving element (not shown) in the optical pickup 3, a semiconductor laser light source for DVD, a semiconductor laser light source for DVD, an optical system such as an objective lens, and an actuator. Optical pickup 3, a laser control circuit 4 for controlling the light amount of a laser light source, and an AT engraved on the optical disc 1.
AT to retrieve IP (Absolute Time In Pregroove) information
An IP decoder 7, a CD encoder circuit 8 for generating an accurate data writing position, and a CD for EFM (Eight to Fourteen Modulation) modulation of a binarized RF signal.
/ DVD decoder 10, a buffer RAM 11 for temporarily storing data, a buffer manager 14 for controlling the buffer RAM 11, a host interface 12 connected to the buffer RAM 11 and having an ATAPI or SCSI interface, and a CD / DVD decoder 10. The audio circuit 13 is connected and outputs an audio signal.

Next, the operation of the optical disk drive device according to this configuration will be described. The optical disc 1 is rotationally driven by a spindle motor 2. Spindle motor 2
Is a ZCLV (Zone Co
nstant Linear Velocity: Constant linear velocity between zones) is controlled. Although not shown, servo control is performed by a focus actuator, a track actuator, a light receiving element, a position sensor, and the like. A laser beam emitted from one of the two selected laser light sources is focused on the recording surface of the optical disc by the objective lens 33, and each signal from the light receiving element is converted to R.
The read signal (RF signal,
Signals such as HF signal 16 and focus error signal / track error signal 15 are generated. Based on these signals, the focus servo and the track servo send signals to the driver 5 by the servo circuit 9 to control the actuator of the pickup 3 to reproduce the information recorded on the optical disc 1 or record it on the optical disc 1. To do When reading CD data, the reproduction RF signal is amplified by the RF amplifier 6 and binarized (digitized).
Then, it is input to the CD / DVD decoder 10 and EF
M (Eight to Fourteen Modulation) demodulation. DV
The difference is that 8/16 demodulation is performed in the case of D data. Thereafter, interleaving and error correction processing are performed, and the buffer manager 14 temporarily stores the data in the buffer RAM 11. Then, when all the sector data is prepared, AT
It is sent to a host computer (not shown) via the host interface 12 such as API or SCSI. Audio-related outputs are output from the audio output circuit 13. When writing CD data, the data sent from the host via the host interface 12
The buffer RAM 14 is temporarily stored by the buffer manager 14.
The writing is started when the data is stored in 1 and a certain amount of data is stored in the buffer, but before that, the laser spot must be positioned at the writing start point. This point is obtained from the wobble signal previously recorded on the optical disk due to the meandering of the track. The wobble signal includes absolute time information called ATIP (Absolute Time In Pregroove).
To retrieve this information. Further, the sync signal generated by the ATIP decoder is input to the CD encoder 8 to enable writing of data at an accurate position. Data in the buffer RAM 11 is EFM-modulated after adding an error correction code and interleaving, and recorded on the optical disc 1 via the laser control circuit 4 and the optical pickup 3.

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 2 is a diagram showing the relationship between the recording position r and the rotation speed R of the spindle motor in the ZCLV method of this embodiment. Further, FIG. 3 is a diagram showing the relationship between the recording position r and the linear velocity (recording velocity) v in the ZCLV method. Since this part has been described in the conventional example, duplicate description will be omitted. The rotation of the spindle motor gradually decreases until the recording speed is increased. This is because the recording speed is constant, that is, the length of the track passing over the pickup in a unit time is controlled to be constant. Position to increase recording speed (Figs. 2 and 3
R2 and r3 positions of the spindle motor rotation (rotation speed of R1 in FIG. 2) at the increased recording speed (v2 in FIG. 3) at that position are the same as when recording at the innermost circumference. It should be decided to be the same. If the recording speed is increased at the inner circumference, the spindle motor must rotate at a correspondingly high speed, and a design corresponding to this rotation becomes necessary. If you increase the recording speed on the outer circumference,
The spindle motor rotates at a slower speed than when recording on the innermost circumference, and the advantage of high-speed recording diminishes.

Here, the rotation speed of the spindle motor is R
Let [rpm] be the distance from the disc center to the recording position be r [mm], and the linear velocity v [m / s] at that position
Is given by v = 2 * π * (r / 1000) * (R / 60). However, π is the pi. Since the linear velocity is constant in the CLV method, v is constant. If r increases as the recording position moves toward the outer circumference, R decreases. Since the recording speed depends only on the linear velocity, the recording speed is constant in this method. When the upper limit of the rotation of the spindle motor is Rmax and the recording position of the innermost circumference is r1, the linear velocity v1 is v1 = 2 * π * (r1 / 1000) * (Rmax / 6
0) is given. Here, since the rotation speed R becomes low on the outer circumference and the spindle motor has a margin, if the recording speed is increased from a certain position r2 to the linear speed v2, v2 = 2 * π * (r2 / 1000) * ( Rmax / 6
0) is given. Since r1 <r2, v1 <v2. Since v2 is controlled so as to be constant, R becomes smaller in recording on the outer circumference than r2. Therefore, the rotation of the spindle motor can be recorded at the recording speed of the linear velocity v2 on the outer circumference from r2 while keeping Rmax as the upper limit. . Similarly, if the linear velocity is set to v3 by increasing the recording speed from the position r3 having the outer circumference, v3 = 2 * π * (r3 / 1000) * (Rmax / 6
0), and r2 <r3, so v2 <v3, and the recording speed can be further improved. As is clear from the figure, at the position where the recording speed is increased (the positions r2 and r3 in FIGS. 2 and 3),
Recording is suspended once. At the time of mastering, such as the ISO9660 format, when data is recorded in a format that allows the track to be cut arbitrarily, the data is recorded as a track seam by mastering so that the track is divided at this position in advance. It can be interrupted. Further, in the case of packet recording, since the packet is very small compared to the recording capacity of the entire disc, recording can be interrupted at the end of writing of the packet near the position where the recording speed is increased.

FIG. 4 is a configuration diagram of an optical disc recorded by the optical disc drive device according to the first embodiment of the present invention. Description will be made with reference to FIG. First, the configuration of the optical disc 20 will be described. Optical disc 20
A center hole 24 formed in the center of the center, an innermost recordable position r1 from which a lead-in area is formed, an OPC area for performing OPC for trial writing at a recording speed v1,
The PMA area 23 in which the disc management information is recorded, the position r2 at which the recording speed is first increased to v2, and the guide area 2 in which the address of the recording area 21 is recorded at the recording speed of v2.
2, a position r3 for further increasing the recording speed to v3, and a recording area 21 for recording at the recording speed of v3.
As described above, in the ZCLV method, recording is temporarily stopped when the outer circumference reaches a certain position, and the recording speed is increased. That is, the rotation speed of the spindle motor is increased at this position, recording is restarted when the rotation speed is increased, and the rotation speed is continuously reduced while recording toward the outer circumference. There are a plurality of such zones, and the recording speed is set to increase from the inner circumference to the outer circumference, and the maximum speed is set at the outermost circumference. Therefore, the recording speed is not recorded at the maximum speed in all zones, and the average recording speed is lower. Therefore, if the recording is performed only on the outer peripheral portion (recording area 21) where the recording speed is the highest, the highest recording speed of the disc becomes the recording speed of the disc. Also, the conventional ZCLV type optical disc has an OPC on the inner circumference.
There is an area, and zones are formed while increasing the recording speed from the area toward the outer periphery sequentially, and the linear speed is recorded constant by slowing the rotation speed of the motor from the maximum speed for a while. In the present invention, the guide area 22 in which no data is recorded is provided from the inner peripheral OPC area 23 to the recording area having the highest recording speed, and the data is recorded only in the outer peripheral zone having the highest recording speed. The feature is that the recording area 21 is provided. As a result, the seek operation of the recording area 21 can be speeded up and the recording speed can be recorded at the maximum speed. In addition, in the guide area 22, the recording area 21
Address information of is recorded. In the case of the present invention, no data is recorded between the OPC area 23 and the recording area 21. Therefore, after the OPC is completed, the data area 21 is not recorded.
There is a possibility that you cannot seek somewhere. Therefore, an area (guide area 22) in which only the address of the recording area is recorded is formed in the meantime so that the seek operation can be performed quickly. Further, it is more preferable to record the information in advance in the manufacturing process. The configuration of the optical disc of the present invention is such that the OPC area 23 and the guide area 2
2. The recording area 21. Areas where actual data is recorded are only the OPC area 23 and the recording area 21, and no data is recorded in the guide area 22. Further, since the gold coating is sufficient only in the recording area 21, it is possible to reduce the cost of the optical disc by coating only the recording area 21.

FIG. 5 is a configuration diagram of an optical disc recorded by the optical disc drive device according to the second embodiment of the present invention. This configuration has a center hole 34 opened in the center of the optical disc 30, a blank area 33 in which nothing is recorded, a recording area 32 in which data is recorded, and an OPC for trial writing at the recording speed at the outermost periphery. Do OPC
It is composed of a region 31. This embodiment is different from the recording method of FIG. 4 in that an OPC area 31 is provided on the outermost circumference and a recording area 32 is formed on the inner circumference side thereof.
Although the recording area 32 is slightly narrowed, it is not necessary to record the address information of the recording area because the guide area is not required. Further, in the case of the present embodiment, when recording is performed from the inner circumference to the outer circumference, the motor rotation speed is temporarily delayed in order to keep the linear velocity constant. However, in the opposite case, that is, in the case of recording from the outer circumference to the inner circumference, the rotation speed of the motor needs to be temporarily increased as shown in FIG. 6 in order to keep the linear velocity constant. The recording area 32 is coated with a recording film such as gold plating. However, since the blank area 33 on the inner circumference thereof is not an area for recording anything, it can be made transparent so that a handwritten title or the like can be recorded. The optical disc described above has different recording sensitivity characteristics due to various factors such as its manufacturing process and material. Therefore, when a new optical disc is mounted on the optical drive device shown in FIG. 1, the device confirms the characteristics of the optical disc and finds an area where the recording speed corresponding to the maximum speed becomes constant. Then, if the start address of the area is recorded inside the recording area in advance, the recording area can be found immediately at the time of recording.

[0016]

As described above, according to the present invention, in claim 1, zone recording is performed by sequentially increasing the recording speed from the inner circumference, but data is recorded only in the outer circumference and in the inner circumference. By recording the management information, the transfer speed of the drive device can be used at the maximum, so that the writing time can be shortened. According to a second aspect of the present invention, the seek operation of the recording area is speeded up and the recording speed is maximized by sequentially forming the OPC area, the guide area, and the signal recording area from the innermost side to the outer side of the optical disk. Can be recorded at speed. In the third aspect, since the guide area is formed in advance by the manufacturing process of the optical recording medium, the seek operation time can be shortened. According to the fourth aspect, since the gold recording film is coated only on the signal recording area, the cost of the optical disk can be reduced. Since the signal recording area is formed by one zone, the rotation control of the motor is easy. Since the signal recording area is formed from an area capable of recording at a recording speed corresponding to the maximum speed of the rotary motor that rotates the optical disk, it is possible to set a recording area suitable for the sensitivity characteristic of the optical disk. . According to a seventh aspect of the present invention, the OPC area for determining the optical power to the signal recording area is provided on the outermost circumference side of the optical disc, and the signal recording area is provided on the inner circumference side of the OPC area, whereby the address information of the recording area is recorded. Since there is no need to do so, the data recording operation can be performed immediately from the OPC operation.

According to an eighth aspect of the present invention, as the recording is performed from the outermost peripheral side of the optical disc toward the inner peripheral side, the rotational speed of the rotary motor for rotating the optical disc continues as the recording position goes from the outermost peripheral side to the inner peripheral side. The recording linear velocity can be kept constant because the recording linear velocity is controlled to be faster. According to the ninth aspect, the inner peripheral side other than the signal recording area is a handwritten title area, and by making this area transparent, when the title is recorded, the title can be confirmed from both front and back sides. According to a tenth aspect of the present invention, when an optical disc is first mounted in the optical disc drive device, a recording speed constant area corresponding to the maximum speed of the rotary motor is set in accordance with the speed changing sequence of the optical disc drive device so as to match the performance of the optical disc. By finding and recording the address information of the recording area in advance on the inner circumference side of this recording area, the recording area can be found immediately at the time of recording.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an optical disc drive device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a recording position r and a rotation speed R of a spindle motor in the ZCLV method.

FIG. 3 is a diagram showing a relationship between a recording position r and a linear velocity (recording velocity) v in the ZCLV method.

FIG. 4 is a configuration diagram of an optical disc recorded by the optical disc drive device according to the first embodiment of the present invention.

FIG. 5 is a configuration diagram of an optical disc recorded by an optical disc drive device according to a second embodiment of the present invention.

FIG. 6 is a diagram showing a relationship between motor rotation speed and time of an optical disc according to a second embodiment of the present invention.

[Explanation of symbols]

1 optical disc 2 spindle motor 3 optical pickup 4 Laser controller 5 drivers 6 RF amplifier 7 ATIP decoder 8 CD encoder 9 Servo circuit 10 CD / DVD decoder 11 Buffer RAM 12 Host interface 13 Audio OUT 14 Buffer manager

Claims (10)

[Claims] 1. An optical disc recording medium in which a recording surface of an optical recording medium is divided into zones to record a constant recording speed, and a plurality of optical recording media are sequentially recorded at high speed from an innermost side to an outer side. An area is provided, and the plurality of areas are a test writing area for determining the optical power to the signal recording area of the optical recording medium, a guide area for recording a guide signal of the signal recording area, the trial writing area and the guide area. A signal recording area for recording a signal based on the optical recording medium, and the signal recording area is formed only on the outermost peripheral portion of the optical recording medium, and the recording speed of the signal recording area is the optical recording medium. An optical disk recording medium characterized by being recorded at the highest recordable speed. 2. The optical disk according to claim 1, wherein the test writing area, the guide area, and the signal recording area are sequentially formed from the innermost circumference side to the outer circumference side of the optical recording medium. recoding media. 3. The optical disk recording medium according to claim 1, wherein the guide area is formed in advance by a manufacturing process of an optical recording medium. 4. The optical disk recording medium according to claim 1, wherein only the signal recording area is coated with a recording film. 5. The optical disk recording medium according to claim 1, wherein the signal recording area is formed by one zone. 6. The optical disk recording according to claim 1, wherein the signal recording area is formed from an area capable of recording at a recording speed corresponding to a maximum speed of a rotary motor that rotates the optical recording medium. Medium. 7. An optical disk recording medium for recording a recording speed constant by dividing a recording surface of an optical recording medium into zones, wherein an optical power to a signal recording area of the optical recording medium is provided on an outermost peripheral side of the optical recording medium. An optical disk recording medium, wherein a test writing area to be determined is provided, and the signal recording area is provided on an inner peripheral side of the test writing area. 8. When data is recorded on the optical recording medium, the number of rotations of a rotary motor is recorded from the outermost peripheral side to the inner peripheral side of the optical recording medium, and the optical recording medium is rotated accordingly. The optical disc recording medium according to claim 7, wherein the recording position continuously increases from the outermost peripheral side toward the inner peripheral side. 9. The optical disk recording medium according to claim 7, wherein an inner circumference side other than the signal recording area is a handwriting-enabled title area, and the area is transparent. 10. An optical disk drive device using a rotation control method for dividing a recording surface of an optical recording medium into zones to keep a linear velocity constant, and when the optical recording medium is mounted on the optical disk drive device for the first time, In order to match the performance of the recording medium, a recording speed constant area corresponding to the maximum speed of the rotary motor is found in accordance with the speed change sequence of the optical disk drive device, and the address of the recording area is previously located on the inner circumference side of the recording area. An optical disk drive device characterized by recording information.