JP2001331945A - Information recording medium, information recording and reproducing method and information recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information recording medium with which adequate recording and reproducing conditions may be acquired, an information recording and reproducing method and an information recording and reproducing device. SOLUTION: This information recording medium 101 has a data region 103 for recording data, a drive information region 102 for recording at least drive information and the data region 103 includes plural segment regions 103 segmented in the radial direction of the information recording medium. Each of the at least one drive information includes the recording and reproducing conditions corresponding to one among the plural segment regions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an information recording medium, an information recording / reproducing method and an information recording / reproducing apparatus for the information recording medium.

[0002]

2. Description of the Related Art An optical disc is known as an information recording medium having a sector structure. In recent years, the density and capacity of optical disks have been increasing, and it has become important to ensure the reliability of optical disks. In order to ensure this reliability, the optical disk device performs a learning process for finding recording / reproducing conditions used when recording / reproducing on / from the mounted optical disk. The recording / reproducing conditions include a recording power condition indicating an optimum power of the semiconductor laser irradiating the optical disc during data recording. The recording power condition is obtained by recording power learning.

For example, Japanese Patent Laid-Open No.
There is a method described in JP-A-141827. The recording power learning is performed every time the optical disk device is started up after the optical disk is mounted on the optical disk device, or whenever the characteristics of the optical disk or the characteristics of the optical disk device change more than a predetermined value due to a factor such as a temperature change. .

The recording / reproducing conditions including such recording power conditions can be obtained in one of an inner peripheral area and a drive test area provided in an outer peripheral area of the optical disk. The optical disk device performs a recording / reproducing process on the mounted optical disk using the required recording / reproducing conditions.

[0005]

Recently, as the capacity and density of optical discs have been further increased, the recording / reproducing conditions simply determined in the drive test area as in the prior art are limited to the entire surface of the disc. In some cases, or when recording / reproducing is performed at a device temperature different from the device temperature of the information recording / reproducing device for which the recording / reproducing conditions have been determined, it is not appropriate. One method for learning the recording / reproducing conditions more precisely is to determine the recording / reproducing conditions in the drive test area every time data is recorded / reproduced.
The standby time due to learning of the recording / reproducing conditions becomes long, which is not practical.

The present invention has been made in view of the above problems, and provides an information recording medium, an information recording / reproducing method, and an information recording / reproducing apparatus capable of acquiring appropriate recording / reproducing conditions. With the goal.

[0007]

An information recording medium according to the present invention is an information recording medium having a data area for recording data and a drive information area for recording at least one drive information. The data area includes a plurality of divided areas divided in a radial direction of the information recording medium, and each of the at least one drive information has a recording / reproducing condition corresponding to one of the plurality of divided areas. including.

[0008] The recording / reproducing condition may specify an operating condition when an information recording / reproducing apparatus to which the information recording medium can be mounted records and reproduces data.

[0009] Each of the plurality of segmented regions may include a learning region for obtaining the recording / reproducing condition.

The data area includes a user area and a spare area including a spare area that can be used in place of a defective area included in the user area, and an unused spare area in the spare area is used for recording / reproducing. It may be used to determine a condition.

[0011] The data area may include a learning-only area used only for obtaining the recording and reproducing conditions.

[0012] Each of the plurality of divided areas is a ZCL
It may correspond to at least one zone according to either the V system or the ZCAV system.

[0013] The drive information area includes N ECC blocks for calculating an error correction code, each of the N ECC blocks includes a plurality of sectors, and each of the plurality of recording / reproducing conditions includes: It is recorded in one corresponding sector among a plurality of sectors, and N is 1
It may be an integer greater than or equal to.

[0014] The drive information may further include version information indicating conditions under which the plurality of recording / reproducing conditions are obtained.

[0015] At least one of the plurality of segmented areas includes:
At least one recording / playback instruction area may be included.

An information recording medium according to the present invention is an information recording medium comprising a data area for recording data and a drive information area for recording at least one drive information, wherein the information recording medium is provided. The temperature region indicating the range of the ambient temperature includes a plurality of segmented temperature regions, and each of the at least one drive information includes a recording / reproducing condition corresponding to one of the plurality of segmented temperature regions.

The recording / reproducing condition may define an operating condition when an information recording / reproducing apparatus to which the information recording medium can be mounted records and reproduces data.

The drive information area includes N ECC blocks for calculating an error correction code, each of the N ECC blocks includes a plurality of sectors, and each of the plurality of recording / reproducing conditions includes: It is recorded in one corresponding sector among a plurality of sectors, and N is 1
It may be an integer greater than or equal to.

[0019] The drive information may include version information indicating a condition under which the recording / reproducing condition is obtained.

An information recording / reproducing method according to the present invention is an information recording / reproducing method for an information recording medium having a data area having a plurality of divided areas divided in a radial direction,
(A) instructing a segment area to be recorded / reproduced among the plurality of segment areas; (b) acquiring recording / reproducing conditions corresponding to the designated segment area; and (c) acquiring Performing recording and reproduction based on the set recording and reproduction conditions.

[0021] The recording / reproducing condition may prescribe an operating condition at the time of recording / reproducing by the information recording / reproducing apparatus to which the information recording medium can be mounted.

The step (b) may include a step of obtaining the recording / reproducing condition by a learning process.

(D) recording the recording / reproducing conditions on the information recording medium.

[0024] The information recording medium further includes a drive information area in which drive information including the recording / reproducing condition is recorded, and the step (b) includes a step of reading the recording / reproducing condition recorded in the drive information area. May be included.

The drive information includes version information indicating a condition under which the recording / reproducing condition is obtained, and (e) a step of determining whether to use or update the recording / reproducing condition based on the version information. May be included.

[0026] The version information may include history information on firmware of the information recording / reproducing apparatus.

[0027] The step (b) may include a step of using a learning area included in each of the plurality of divided areas in the learning processing.

[0028] The data area includes a user area and a spare area including an alternative area that can be used in place of a defective area included in the user area.
May include a step of using an unused alternative area in the spare area in the learning process.

In the step (b), a learning-only area included in the data area may be used only in the learning process.

Each of the plurality of divided areas is a ZCL
It may correspond to at least one zone according to either the V system or the ZCAV system.

At least one of the plurality of divided areas includes
At least one recording / playback instruction area may be included.

According to the information recording / reproducing method for an information recording medium of the present invention, the temperature region indicating the device temperature range of the information recording / reproducing apparatus includes a plurality of divided temperature regions. Measuring the device temperature of the information recording / reproducing device; (b) acquiring a recording / reproducing condition corresponding to a section temperature region to which the measured device temperature belongs; and (c) acquiring the acquired recording / reproducing condition. Performing recording and reproduction based on

[0033] The recording / reproducing condition may prescribe an operating condition when an information recording / reproducing apparatus capable of mounting the information recording medium records and reproduces data.

The step (b) may include a step of obtaining the recording / reproducing condition by a learning process.

(D) recording the recording / reproducing conditions on the information recording medium.

[0036] The information recording medium further includes a drive information area in which drive information including the recording / reproducing condition is recorded, and the step (b) includes a step of reading the recording / reproducing condition recorded in the drive information area. May be included.

The drive information includes version information indicating a condition under which the recording / reproducing condition is obtained, and (e) a step of determining whether to use or update the recording / reproducing condition based on the version information. May be included.

[0038] The version information may include history information on firmware of the information recording / reproducing apparatus.

The information recording / reproducing method of the present invention is an information recording / reproducing method for an information recording medium provided with a drive information area for recording drive information including a plurality of recording / reproducing conditions, wherein (a) Determining whether there is a first recording / reproducing condition among a plurality of recording / reproducing conditions included in the drive information area; and (b) if the first recording / reproducing condition does not exist, the drive information area Determining whether a second recording / reproducing condition is present among the plurality of included recording / reproducing conditions; and (c) when the second recording / reproducing condition is present, determining whether the second recording / reproducing condition is equal to a predetermined value. Calculating the first recording / reproducing condition using the conditional expression:
(D) performing recording and reproduction based on the calculated first recording and reproduction conditions.

[0040] Each of the plurality of recording / reproducing conditions may specify an operating condition when an information recording / reproducing apparatus capable of mounting the information recording medium records and reproduces data.

(E) The method may further include the step of recording the calculated first recording / reproducing condition in the draft information area.

The step (d) includes a step of performing test recording / reproduction of data under the calculated first recording / reproduction condition, and (f) storing the drive information based on the result of the test recording / reproduction. The method may further include a step of determining whether to update or obtain the first recording / reproducing condition by a learning process.

The information recording medium further includes a data area for recording data, the data area includes a plurality of divided areas divided in a radial direction of the information recording medium, and each of the plurality of recording / reproducing conditions May correspond to at least one of the plurality of segmented regions.

[0044] The predetermined conditional expression may be a function of a radius of the information recording medium.

[0045] The predetermined conditional expression may be a function of a linear velocity of the information recording medium.

At least one of the plurality of divided areas is
At least one recording / playback instruction area may be included.

The temperature region indicating the device temperature range of the information recording / reproducing apparatus includes a plurality of divided temperature regions, and each of the plurality of recording / reproducing conditions corresponds to at least one of the plurality of divided temperature regions. Is also good.

[0048] The predetermined conditional expression may be a function of the apparatus temperature.

Each of the plurality of divided areas is a ZCL
It may correspond to at least one zone according to either the V system or the ZCAV system.

The drive information includes version information indicating a condition under which the recording / reproducing condition is obtained, and (g) a step of determining whether to use or update the plurality of recording / reproducing conditions based on the version information. It may further include.

[0051] The version information may include history information on firmware of the information recording / reproducing apparatus.

An information recording / reproducing apparatus according to the present invention is an information recording / reproducing apparatus for an information recording medium provided with a data area having a plurality of divided areas divided in a radial direction. The learning information processing unit includes: a learning information processing unit configured to acquire a recording / reproducing condition corresponding to a section area to be recorded / reproduced; and a recording / reproducing control unit configured to perform recording / reproducing based on the acquired recording / reproducing condition.

The recording / reproducing condition may define an operating condition when an information recording / reproducing apparatus capable of mounting the information recording medium records / reproduces data.

The learning information processing section may determine the recording / reproducing condition by a learning process.

[0055] The learning information processing section may record the recording / reproducing condition on the information recording medium.

The information recording medium further includes a drive information area in which drive information including the recording / reproducing condition is recorded, and the learning information processing section reads out the recording / reproducing condition recorded in the drive information area. Is also good.

The drive information includes version information indicating a condition under which the recording / reproducing condition is obtained, and the learning information processing unit determines whether to use or update the recording / reproducing condition based on the version information. May be.

[0058] The version information may include history information on firmware of the information recording / reproducing apparatus.

[0059] The learning information processing section may determine the recording / reproducing condition from the learning area included in each of the plurality of divided areas by the learning processing.

The data area includes a user area and a spare area including an alternative area that can be used in place of the defective area included in the user area. The recording / reproducing condition may be obtained from the alternative area by the learning process.

[0061] The learning information processing section may determine the recording / reproducing condition by the learning process from a learning-only area included in the data area and used only for obtaining the recording / reproducing condition.

Each of the plurality of divided areas is a ZCL
It may correspond to at least one zone according to either the V system or the ZCAV system.

At least one of the plurality of divided areas is
At least one recording / playback instruction area may be included.

An information recording / reproducing apparatus for an information recording medium according to the present invention, wherein a temperature region indicating a device temperature range of the information recording / reproducing apparatus includes a plurality of divided temperature areas. A temperature measuring unit that measures the device temperature of the information recording / reproducing device, a learning information processing unit that acquires a recording / reproducing condition corresponding to a section temperature region to which the measured device temperature belongs, and A recording / reproduction control unit for performing recording / reproduction.

[0065] The recording / reproducing condition may specify an operating condition when the information recording / reproducing apparatus records / reproduces data.

The learning information processing section performs a learning process
The recording and reproduction conditions may be obtained.

The learning information processing section may record the recording / reproducing conditions on the information recording medium.

The information recording medium further includes a drive information area in which drive information including the recording / reproducing conditions is recorded, and the learning information processing section reads out the recording / reproducing conditions recorded in the drive information area. Good.

The drive information includes version information indicating a condition under which the recording / reproducing condition has been obtained, and the learning information processing section determines whether to use or update the recording / reproducing condition based on the version information. May be.

[0070] The version information may include history information on firmware of the information recording / reproducing apparatus.

An information recording / reproducing apparatus according to the present invention is an information recording / reproducing apparatus for an information recording medium having a drive information area for recording drive information including a plurality of recording / reproducing conditions. It is determined whether there is a first recording / reproducing condition among a plurality of recording / reproducing conditions included in the drive information area. If the first recording / reproducing condition does not exist, a second recording / reproducing condition included in the drive information area is determined. It is determined whether or not there is a condition, and if there is the second recording / reproducing condition, the learning information processing unit uses the second recording / reproducing condition and a predetermined conditional expression to execute the first recording / reproducing condition. The learning information processing unit for calculating the first information and the recording / reproducing control unit include a recording / reproducing control unit for recording / reproducing data based on the calculated first recording / reproducing condition.

Each of the plurality of recording / reproducing conditions may define an operating condition when an information recording / reproducing apparatus capable of mounting the information recording medium records / reproduces data.

The learning information processing section is configured to calculate the first
May be recorded in the drive information area.

The recording / reproducing control unit performs test recording / reproducing of data under the calculated first recording / reproducing condition, and the learning information processing unit transmits the drive information based on the result of the trial recording / reproducing. It may be determined whether to update or to obtain the first recording / reproducing condition by a learning process.

The information recording medium further includes a data area for recording data. The data area includes a plurality of divided areas divided in a radial direction of the information recording medium. May correspond to at least one of the plurality of segmented regions.

[0076] The predetermined conditional expression may be a function of a radius of the information recording medium.

[0077] The predetermined conditional expression may be a function of a linear velocity of the information recording medium.

At least one of the plurality of divided areas is
At least one recording / playback instruction area may be included.

The temperature region indicating the range of the device temperature of the information recording / reproducing apparatus includes a plurality of divided temperature regions, and each of the plurality of recording / reproducing conditions corresponds to at least one of the plurality of divided temperature regions. You may.

[0080] The predetermined conditional expression may be a function of the apparatus temperature.

Each of the plurality of divided areas is a ZCL
It may correspond to at least one zone according to either the V system or the ZCAV system.

The drive information includes version information indicating a condition under which the recording / reproducing condition is obtained, and the learning information processing section determines whether to use or update the plurality of recording / reproducing conditions based on the version information. It may be determined.

[0083] The version information may include history information on firmware of the information recording / reproducing apparatus.

[0084]

BEST MODE FOR CARRYING OUT THE INVENTION In an information recording medium according to the present invention, recording / reproducing conditions corresponding to a divided area for recording data on an information recording medium or an ambient temperature when recording / reproducing data are recorded in a drive information area. This makes it possible to read out the optimum recording and reproduction conditions. The segmented area is an area formed when the information recording medium is divided in the radial direction, and includes a recording / reproduction instructing area in which at least one of recording and reproduction with respect to data of a minimum unit is possible. The information recording medium includes a plurality of divided areas. The plurality of recording / reproducing conditions may be recorded in any memory in the information recording / reproducing apparatus to which the information recording medium is attached. The recording / reproducing instruction area is composed of one of an area instructed to record data (recording instruction area) and an area instructed to reproduce data from the area (reproduction instruction area). Or both of them.

When it is determined that there is no optimum recording / reproducing condition among the plurality of recording / reproducing conditions recorded in the drive information area, the optimum recording / reproducing condition is obtained by a learning process. The plurality of recording / reproducing conditions recorded in the drive information area of the information recording medium are read out at the next startup, for example, and used when performing recording / reproducing. The drive information area may record recording / reproducing conditions for the mounted information recording / reproducing device and information regarding the mounted information recording / reproducing device.

By reusing the recording / reproducing conditions recorded in the drive information area of the information recording medium,
It is possible to simplify the learning of the recording and reproduction conditions. As a result, the time required for learning the recording and reproducing conditions can be reduced, and the standby time for learning the recording and reproducing conditions can be reduced.

In the present specification, the recording and reproducing conditions are obtained by (1) obtaining the recording and reproducing conditions by learning, (2) reading out the recorded recording and reproducing conditions, and (3) calculating the recording and reproducing conditions. It is. Further, in the present specification, learning of the recording / reproducing conditions means obtaining the recording / reproducing conditions.

Here, the recording / reproducing conditions refer to operating conditions of the information recording / reproducing apparatus when the information recording / reproducing apparatus records information on the information recording medium or reproduces the information recorded on the information recording medium. .

The recording / reproducing conditions include a pulse condition relating to a laser pulse applied to the information recording medium, a servo condition for determining various servo operations during recording / reproducing, and a reproducing signal processing condition for processing a reproduced signal. At least one of them is included.

The pulse condition includes, for example, the power value of a laser pulse applied to the information recording medium during recording. Alternatively, the pulse condition may include a laser pulse condition for forming a mark (minimum unit of information) on the information recording medium. When irradiating the information recording medium with a plurality of pulses from the front end to the rear end of the mark when forming the mark on the information recording medium, the pulse condition is determined based on the generation timing of the first pulse corresponding to the front end of the mark. , The length of the first pulse, the intensity of the laser light of the first pulse, the generation timing of the last pulse corresponding to the trailing end of the mark, the length of the last pulse, and the intensity of the laser light of the last pulse And at least one of
It is determined according to the length of the mark and the length of the space arranged before and after the mark.

The servo condition indicates, for example, a focus position condition indicating a distance between the objective lens and the recording / reproducing surface of the optical disk. Alternatively, it may include a tracking position condition for causing a laser beam applied to an optical disk to follow a track.

Alternatively, the recording / reproducing condition may be set values of various circuits included in the information recording / reproducing apparatus or code information indicating the set values.

In the following description, a recording power condition and a focus position condition will be described as specific examples of the recording and reproducing conditions, but the recording and reproducing conditions are not limited to these.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 shows the structure of an information recording medium 101 according to Embodiment 1 of the present invention. The information recording medium 101 can be any optical disk such as a DVD-RAM. A plurality of tracks 102 are formed concentrically on a disk-shaped optical disk 101. Alternatively, on the optical disc 101, a single track 102 may be formed in a spiral shape, or a plurality of tracks 102 may be formed in a spiral shape. The track 102 is divided into a plurality of sectors 103. The zone 106 includes a plurality of tracks 102.

The area of the optical disk 101 includes one or more disk information areas 104 and data areas 105.

The disk information area 104 records parameters necessary for accessing the optical disk 101. The disc information area 104 is arranged, for example, at the innermost circumference and the outermost circumference of the optical disc 101. Disk information area 104 arranged at the innermost circumference of optical disk 101
Is also referred to as a lead-in area (Lead-in Area). The disc information area 104 arranged at the outermost periphery of the optical disc 101 has a lead-out area (Lead-
out Area).

Recording and reproduction of data are performed on the data area 105. All sectors 103 in data area 105
Is a physical sector number (Physical Sector).
Number; hereinafter, abbreviated as PSN) is assigned.

FIG. 2 shows the optical disk 101 shown in FIG.
2 shows the structure of the disk information area 104 (that is, the lead-in area 201) arranged at the innermost periphery of the disk information area. FIG.
2 can also have the same structure as the structure shown in FIG.

The lead-in area 201 includes an emboss area 202 in which identification information of the optical disc is recorded by emboss pits, a data recording area 204 for recording information, and a mirror area between the emboss area 202 and the data recording area 204. 203.

The data recording area 204 includes a guard area 205 containing no data and a disc test area 20 used for quality inspection when manufacturing the optical disc 101.
6 and a drive test area 2 used to verify the state of the optical disk 101 on which the optical disk device is mounted.
07, a disc identification area 208 used for storing information such as various characteristics of the optical disc 101, and a defect management area 209 for storing defect management information.

FIG. 3 shows E, which is a unit of calculation of an error correction code.
FIG. 3 is a configuration diagram of an ECC block and a sector showing a relationship between a CC block and a sector recorded on the optical disk 101. In a DVD which is an optical disk having a large capacity, one ECC block is composed of 16 sectors in order to achieve both high error correction capability and low redundancy. However, in this figure, it is assumed that an ECC block is composed of four sectors for the purpose of simplification.

FIG. 3A is a configuration diagram of an ECC block. In the ECC block, main data is arranged in 172 bytes × 48 rows, an inner code parity PI in which an error correction code is calculated for each row (in the horizontal direction), and an error correction code is calculated for each column (in the vertical direction). Outer code parity P with calculated code
O.

Inner code parity PI and outer code parity PO
Are generally called product codes. The product code is an error correction method that is strong against both random errors and burst errors (locally concentrated errors). For example, consider a case where a burst error of two lines occurs due to a scratch in addition to a random error. The burst error can be corrected because most of the error is a 2-byte error when viewed from the outer code. A column in which many random errors exist cannot be corrected by the outer code and an error remains, but the remaining error can be corrected in most cases by the inner code. Even if an error remains due to the inner code, the error can be further reduced by correcting again with the outer code. In the DVD, by using such a product code, a sufficient correction capability is realized while suppressing the redundancy of the parity. In other words,
The amount of user data can be increased due to the reduced parity redundancy.

FIG. 3B is a diagram showing the configuration of a sector. E
The outer code parity of the CC block is evenly distributed to each sector row by row. As a result, one recording sector is 1
It is composed of 82 bytes × 13 rows of data.

When the optical disk device is instructed to reproduce the loaded optical disk 101 in sector units, the optical disk device reproduces an ECC block including the specified sector from the optical disk 101 and performs error correction. , Only the data portion corresponding to the specified sector, for example,
The data is stored in the buffer and transferred to the host controller. When the optical disc apparatus is instructed to perform recording on the mounted optical disc 101 in sector units, the optical disc apparatus reproduces the ECC block including the specified sector from the optical disc 101, corrects the error, and then performs the error correction. The data portion corresponding to the specified sector is replaced with the data to be recorded, the error correction code is recalculated and re-attached to the data to be recorded, and the ECC block including the specified sector is recorded on the optical disk 1.
Record at 01.

In the following description, a block means the above-described ECC block.

FIG. 4 shows the structure of the disk identification area 208 shown in FIG. The disk identification area 208 includes a disk identification information area 402 composed of four ECC blocks.
And drive information area 4 composed of two ECC blocks
03 and a reserved area 404 composed of two ECC blocks
And The ECC block is used to calculate an error correction code. The error correction code is calculated for each ECC block.

[0109] In each ECC block of the disc identification information area 402, disc identification information 405 is recorded. In each ECC block of the drive information area 403, drive information 406 is recorded. Information on the reservation 407 is recorded in each ECC block of the reservation area 404.

The drive information 406 is expressed, for example, in the form of a list of a plurality of recording / reproduction conditions 406a. Therefore, the drive information 406 is also called a recording / reproducing condition list. Also, two Es for recording the drive information 406
Each of the CC blocks may be updated so that the recording / reproducing condition list having the same content is recorded.

In FIG. 4, the value following the symbol # is provided for convenience to indicate the time series in which the recording / reproducing conditions 406a are recorded, and is not included in the contents of the recording / reproducing conditions 406a. Here, N is an integer of 0 or more. In the example shown in FIG. 4, each of the drive information 406 may include N recording / reproducing conditions 406a.
Each of the N recording / reproducing conditions 406a is recorded in one sector.

The recording / reproducing conditions 406a are arranged in the recording order. For example, N recording / reproducing conditions 40
Numeral 6a is arranged in order from the latest time recorded on the optical disc to the oldest.

The recording / reproducing condition 406a is a maker identifier 4 for identifying a maker that manufactures the optical disk device.
10, a drive identifier 408 for identifying the optical disk device by the manufacturer, and a learning result storage area 4 for storing, for example, a learning result obtained by learning.
09.

In the present embodiment, a recording / reproducing condition corresponding to one of a plurality of radially divided areas for recording data is obtained. FIG. 5 is a block diagram showing a configuration of an information recording / reproducing apparatus (optical disc apparatus) 500 according to Embodiment 1 of the present invention.

The information recording / reproducing device 500 includes a host controller (generally corresponding to a host computer) and an I / O
It is connected via a bus 580. The information recording / reproducing device 500 includes an instruction processing unit 510 for processing a command from a higher-level control device, a recording / reproducing control unit 525 for controlling recording or reproduction on an optical disk, and a search control unit 590 for controlling retrieval. A drive information storage buffer 54 for storing information recorded in the reproduced drive information.
0, a data buffer 550 for temporarily storing recording and reproducing data, a temperature measuring section 560 for measuring the device temperature of the information recording and reproducing apparatus 500, and learning information processing for controlling the drive information area and the recording power learning processing. A section 570 is functionally provided. The recording / reproduction control unit 525 includes a recording control unit 520 for controlling the recording on the optical disc, and a reproduction control unit 530 for controlling the reproduction from the optical disc. The search is a so-called seek process.
It means an operation of moving the head of the optical disk device.

The learning information processing section 570 controls the recording / reproducing condition list reading section 571 for reading the recording / reproducing condition list from the drive information area, the recording / reproducing condition list, and recording the created list in the drive information area. It includes a recording / reproducing condition list updating unit 572, a recording power learning processing unit 573 for controlling the recording power learning process, and a focus position learning processing unit 574 for learning the focus position and acquiring the optimal focus position condition.

A procedure for obtaining the recording / reproducing condition corresponding to the segmented area for recording / reproducing data according to the present embodiment will be described below.

FIG. 6A shows a recording power learning procedure for obtaining a recording power condition corresponding to a radial position of a recording instruction area for recording data. This learning process is performed by the recording control unit 520 of the information recording / reproducing device 500 shown in FIG.
This is executed by the recording power learning processing unit 573. In this specification, an area in which learning for obtaining the recording and reproducing conditions is performed is referred to as a learning area.

The recording control unit 520, which has received the recording command through the command processing unit 510, stores the data to be recorded in the data buffer 550, and interrupts the recording process (Step 601). Next, the recording power learning processing unit 573 executes the recording power learning in the recording instruction area indicated by the recording command (Step 602). After the recording power learning is completed, the recording control unit 520 records the data stored in the data buffer 550 in the recording instruction area indicated by the recording command using the recording power condition obtained by the recording power learning (step 603). ).

As described above, the recording control unit 520 once
After the recording process is interrupted, the recording power learning is performed in the recording instruction area indicated by the recording command using the recording power learning processing unit 573, and the recording process is performed using the obtained recording power condition. As a result of using the recording instruction area indicated by the recording command for learning the recording power, even if the data previously stored in the recording instruction area indicated by the recording command is destroyed, the data is recorded in the recording instruction area. No problem. By performing the recording power learning without destroying the data of the user while obtaining the recording power condition according to the recording instruction area in this manner, it is possible to perform recording under the optimum recording power condition.

FIG. 6B shows another recording power learning procedure for obtaining the recording power condition corresponding to the recording instruction area according to the first embodiment of the present invention. Recording control unit 520
Receives the recording command through the command processing unit 510 (step 611). Next, the recording power learning processing unit 57
No. 3 determines whether recording can be performed in the recording instruction area indicated by the recording command (step 612). If recording is impossible, that is, if appropriate recording / reproduction conditions are not acquired in the recording instruction area, it is determined whether recording power learning can be performed in the recording instruction area indicated by the recording command (step 613). As a criterion for determining whether or not the recording power learning can be performed, it may be determined whether or not an area for performing the recording power learning exists. If the recording power learning can be performed, the recording control unit 520 stores the data to be recorded in the data buffer 550 (step 614), and executes the recording power learning (step 615). After the recording power learning is completed, the recording control unit 520 records the data stored in the data buffer 550 in the recording instruction area indicated by the recording command by using the recording power condition obtained by the recording power learning (step). 616). Step 61
2, if the data can be recorded, that is, if it is determined that appropriate recording / reproduction conditions are required in the immediately adjacent recording instruction area and it is not necessary to determine the recording / reproduction conditions again, or If the recording power learning is not possible in 613, the recording control unit 5
Reference numeral 20 records data in a recording instruction area indicated by a recording command without performing recording power learning.

As described above, in the present embodiment, all or a part of the recording instruction area indicated by the recording command functions as a learning area.

When data is recorded on the optical disk 101 having a plurality of segmented areas, the recording power condition obtained by the above method for the recording instruction area indicated by the recording command is changed by the recording instruction indicated by the recording command. As the recording power condition for the divided area including the area, for example, the recording power condition stored in the drive information storage buffer 540 and the next time a recording command for the same divided area is received, the recording power condition stored in the drive information storage buffer 540 is used. It may be recorded. The recording power condition may be recorded in a drive information area of the optical disc.

In the case of a DVD-RAM, a zone may be used as a partition area. The recording / reproducing instruction area may include a sector or an ECC block including the sector.

The present embodiment is not intended to always determine the recording power condition for all of the recording / reproducing areas of the minimum unit in which data can be recorded or reproduced. It is intended to acquire the recording power condition correspondingly or corresponding to the divided area divided in the radial direction.

When recording is performed on a medium in which the optimum recording power condition is different between the land track and the groove track, the recording power learning of the land track and the groove track is performed at the same time. The switching point may be searched, and learning may be performed in an area sandwiching the switching point.

Incidentally, in the recording power learning, conventionally, the BER
Although (Byte Error Rate) is used, jitter indicating a time lag between the reproduced signal and the source signal or asymmetry indicating asymmetry of the reproduced signal may be used.

In the above description, the recording power condition was described as the recording / reproducing condition, but this is not limited to the recording power condition. The recording and reproduction conditions include, for example, recording pulse conditions.

(Second Embodiment) In the second embodiment, learning of recording / reproduction conditions is performed in a spare area close to a recording / reproduction instruction area for recording / reproducing data, so that a recording / reproduction instruction area for recording / reproducing data is provided. The corresponding recording / reproducing conditions can be determined. The block diagram showing the configuration of the information recording / reproducing apparatus according to Embodiment 2 of the present invention is the same as that of information recording / reproducing apparatus 500 shown in FIG.
It has already been explained, so it is omitted.

FIG. 7 shows an example of the format of an optical disk including a spare area. In FIG. 7, the vertical direction indicates the inner and outer circumferences of the optical disc. For example, 2.6 GB
DVD-RAM has this format.

In this embodiment, the optical disk has a map area 701, a user area 702, and a spare area 7
03 is included. The map area 701 is an area for recording information of an alternative process, and the user area 702 is an area for recording user data. The spare area 703 is an area in which a sector that can be used for a replacement process when a defective sector exists in the user area 702 is arranged. The user area 702 has a corresponding spare area 703.
Are provided adjacent to each other. The map area 701 includes areas 0 to
It may be provided at both ends of K. Here, K is an integer of 0 or more. The partition area includes at least one user area and a spare area. Each of the user area and the spare area includes at least one recording / reproducing instruction area.

A procedure for obtaining the recording / reproducing conditions corresponding to the area to be recorded / reproduced according to the present embodiment will be described below.

FIG. 8 shows a procedure of a recording power learning process for obtaining a recording power condition. This processing is performed by the recording control unit 520 of the information recording / reproducing device 500 shown in FIG.
This is executed by the recording power learning processing unit 573.

The recording control unit 520, which has received the recording command through the command processing unit 510, stores the data to be recorded in the data buffer 550, and interrupts the recording process (Step 801). Next, using the information stored in the map area 701, a search is performed for an unused spare area in the spare area 703 near the recording instruction area indicated by the recording command (step 802). If there is an unused spare area in the spare area 703 (“Yes” in the determination in step 803), the recording power learning processing unit 573 executes the recording power learning on the unused spare area in the spare area 703 ( Step 804). When there is no unused spare area in the spare area 703 (“No” in the determination of Step 803), the recording power learning processing unit 573 executes the recording power learning in the recording instruction area indicated by the recording command (Step 805). . After the recording power learning is completed, the recording control unit 520 records the data stored in the data buffer 550 in the recording instruction area indicated by the recording command by using the recording power condition obtained by the recording power learning (step). 806).

Thus, the recording control unit 520 once
After the recording process is interrupted, recording power learning is performed using the recording power learning processing unit 573 in the spare area 703 or the recording instruction area indicated by the recording command, and the recording processing is performed using the obtained recording power condition. Do. As a result, the recording power learning can be performed without destroying the user's data, and the recording power condition corresponding to the recording instruction area can be obtained. As a result, the recording can be performed under the optimum recording power condition. Becomes possible.

In general, since the number of recordable times of the data area is limited, the possibility of using the spare area 703 as a learning area can be increased to prevent the user area 702 from being deteriorated due to the recording power learning. I do.

It is to be noted that at least one user area 702
When recording is performed on an optical disc including a segmented area having a recording area and a spare area 703, the recording power condition obtained by using the above-described method for the recording instruction area indicated by the recording command is changed to the recording instruction area indicated by the recording command. As the recording power condition for the included area, for example, 540 is stored in the drive information storage buffer, and the next time a recording command for the same area is received, recording is performed using the recording power condition stored in the drive information storage buffer 540. You may do so. The recording power condition may be recorded in a drive information area of the optical disc.

The present embodiment is not intended to always determine the recording power condition for all of the recording / reproducing areas of the minimum unit in which data can be recorded or reproduced. Alternatively, it is intended to acquire the recording power condition corresponding to the segmented area.

In the above description, an example in which recording / reproducing is performed in the data area has been described. However, recording / reproducing conditions may be used when recording / reproducing information in the lead-in / lead-out area.

When recording is performed on a medium having different optimum recording power conditions between the land track and the groove track, the land track and the groove track included in the recording area are recorded because the recording power of the land track and the groove track is learned simultaneously. The switching point may be searched, and learning may be performed in an area sandwiching the switching point.

In the recording power learning, the BER
Although (Byte Error Rate) is used, jitter indicating a time lag between the reproduced signal and the source signal or asymmetry indicating asymmetry of the reproduced signal may be used.

In the above description, the recording power condition is described as the recording / reproducing condition. However, the recording / reproducing condition is not limited to the recording power learning. The recording / reproducing condition may be, for example, a recording pulse condition.

(Embodiment 3) In Embodiment 3, the information recording medium is provided with a learning-dedicated area used only for learning the recording / reproducing condition near the segmented area for data recording / reproduction. By executing the learning of the recording / reproducing conditions in a learning-dedicated area close to the position of the recording instruction area to be subjected to data recording / reproduction, the recording / reproduction conditions corresponding to the recording instruction area to be subjected to data recording / reproduction Can be obtained. The block diagram showing the configuration of the information recording / reproducing apparatus according to Embodiment 3 of the present invention is the same as that of information recording / reproducing apparatus 500 shown in FIG.

FIG. 9 shows an example of the format of an optical disk according to the third embodiment of the present invention. In FIG. 9, the vertical direction in the figure indicates the inner and outer circumferential directions of the track. The data area 901 is an area for recording user data. The learning-only area 902 is an area for learning the recording / reproduction conditions. In FIG. 9, in each of the areas 0 to K, the data area 901 and the learning area 90
Although 2 is shown as a pair, the present invention is not limited to this, and one learning-only area 902 may be provided for a plurality of data areas 901. Here, K is an integer of 0 or more.

A procedure for obtaining the recording / reproducing conditions corresponding to the divided area for recording / reproducing data according to the present embodiment will be described below.

FIG. 10 shows a procedure of a recording power learning process for obtaining a recording power condition corresponding to a recording instruction area to be recorded according to the third embodiment of the present invention. This processing is performed by the recording control unit 5 of the information recording / reproducing apparatus 500 shown in FIG.
20 and the recording power learning processing unit 573.

The recording control unit 520, which has received the recording command through the command processing unit 510, stores the data to be recorded in the data buffer 550, and interrupts the recording process (Step 1001). Next, the recording power learning processing unit 573
Learning-only area 9 close to the recording instruction area indicated by the recording command
02, the recording power learning is executed (step 100).
2). After the recording power learning is completed, the recording control unit 520
Records the data stored in the data buffer 550 in the recording instruction area indicated by the recording command using the recording power condition obtained by the recording power learning (step 1003).

Thus, the recording control unit 520 once
After the recording process is interrupted, in the learning-only area 902,
The recording power learning is performed using the recording power learning processing unit 573, and the recording process is performed using the obtained recording power condition. As a result, the recording power learning can be performed without destroying the user's data, and the recording power condition corresponding to the position of the recording instruction area to be recorded can be obtained. As a result, the optimum recording power condition can be obtained. Recording can be performed.

Further, since the number of recordable times in the data area 901 is generally finite, by using the learning-dedicated area 902 as a learning area, a means for searching for a learning area for executing recording power learning can be omitted, and the waiting time can be reduced. Shortened, and
The establishment of learning execution can be improved (that is, learning cannot be performed because there is no learning area). Further, the deterioration of the data area 901 can be prevented.

When recording is performed on an optical disc in which a plurality of recording instruction areas including a data area and a learning-only area are divided in the radial direction, the recording determined by the above method is performed on the recording instruction area indicated by the recording command. The power condition is stored, for example, in the drive information storage buffer 540 as a recording power condition for the section area including the recording instruction area indicated by the recording command, and when the recording command for the same section area is received next time, the drive information storage buffer 54
Recording may be performed using the recording power condition stored in 0.

The present embodiment is not intended to always determine the recording power condition for all of the recording / reproducing areas of the minimum unit in which data can be recorded or reproduced. Alternatively, it is intended to acquire the recording power condition corresponding to the segmented area.

When recording is performed on a medium in which the optimum recording power condition is different between the land track and the groove track, the recording power learning of the land track and the groove track is performed at the same time. The switching point may be searched, and learning may be performed in an area sandwiching the switching point.

In the recording power learning, the BER
Although (Byte Error Rate) is used, jitter indicating a time lag between the reproduced signal and the source signal or asymmetry indicating asymmetry of the reproduced signal may be used.

In the above description, the recording power condition has been described as the recording / reproducing condition. However, the recording / reproducing condition is not limited to the recording power learning. The recording and reproduction conditions include, for example, recording pulse conditions.

(Embodiment 4) In Embodiment 4,
The information recording medium includes a drive information area 403 in which a plurality of divided areas of the information recording medium and recording / reproducing conditions corresponding to the device temperature of the information recording / reproducing apparatus are stored, and a version indicating the conditions under which the recording / reproducing conditions are obtained. With information.

Hereinafter, a method for acquiring the recording / reproducing conditions corresponding to the divided area to be subjected to data recording / reproduction and the device temperature of the optical disk device according to the present embodiment will be described. Here, the recording power condition will be described as a specific example of the recording / reproducing condition.

FIG. 11 shows the learning result storage area 409 of FIG.
Is shown. The learning result storage area 409 stores version information 1101 and a plurality of area recording / reproducing conditions 1102. The version information 1101 includes, for example, history information of a built-in microcomputer control program (firmware) of the information recording / reproducing device stored in the recording / reproducing condition 406a. The area recording / reproducing condition 1102 is, for example,
Includes recording power conditions corresponding to a plurality of areas (area 0 to area K) of the optical disc. Here, K is an integer of 0 or more. In the present embodiment, a plurality of area recording / reproducing conditions 1
Each of 102 includes temperature recording / reproducing conditions 1103 of a plurality of divided temperature regions. The plurality of divided temperature regions are obtained by dividing a temperature region indicating a device temperature range of the optical disk device. In FIG. 11, each of the temperature recording / reproducing conditions 1103 corresponds to the area recording / reproducing condition 110.
2 corresponds to the section temperature area of the apparatus temperature of the optical disk apparatus at the time when the recording power learning is performed in the area indicated by each of the areas 2. Therefore, the obtained recording power condition is stored in the temperature recording / reproducing condition 1103 corresponding to the area where the recording power learning is performed and the section temperature area of the apparatus temperature at that time. The version information 1101 is
It may include history information on hardware of the information recording / reproducing device. This version information 1101, for example,
After sending the information recording / reproducing device for repair, it can be used to determine whether the previously determined recording / reproducing condition is appropriate for the repaired information recording / reproducing device. Further, the version information 1101 may include history information regarding recording and reproduction conditions. With the version information 1101, for example, if the recording / reproducing condition is used 100 times, it can be set not to be used after that.

As described above, the recording power obtained by the recording power learning is obtained for each of the plurality of divided areas of the optical disk and for each of the temperature divisions of the device temperature of the optical disk apparatus at the time of performing the recording power learning. The drive information (recording / reproduction condition list) including the conditions is stored in the drive information area 403, and the drive information 406 (recording / reproduction condition list) is read from the drive information area 403 at the next startup.
By reading the data and using it when it is necessary to perform recording power learning, the time required for recording power learning can be reduced,
The waiting time can be reduced.

Hereinafter, a method for updating the recording / reproducing condition using the version information 1101 will be described. For example,
It is assumed that an information recording medium on which recording / reproducing conditions are recorded in a certain information recording / reproducing apparatus is mounted on the same information recording / reproducing apparatus whose firmware version has been changed. At this time, if the recording / reproducing condition includes information dependent on the firmware, the recording / reproducing condition cannot be used in the updated firmware. Therefore, for example, when it is necessary to newly acquire the recording power condition for the recording power learning, referring to the version information, the information that can be used continuously reuses the information of the previous recording and reproduction condition, and continues to be used. Information that cannot be recorded is deleted, information on the recording and reproduction conditions is newly obtained, and the recording and reproduction conditions are updated. It should be noted that the updating of the recording / reproducing conditions as described above can correspond not only to the firmware but also to a change in the optimal recording / reproducing conditions due to a time-series change of the same information recording / reproducing device, such as repair of a component of the information recording / reproducing device. Make it possible.

As described above, when updating the recording / reproducing condition list with reference to the version information 1101, it is determined whether or not the recording / reproducing conditions stored so far due to, for example, a change in firmware can be reused. Thus, information on recording / reproducing conditions that can be reused when firmware is changed can be left, and the standby time required for learning the recording / reproducing conditions at the next startup can be reduced.

In the fourth embodiment, the version information 1101 is the information stored in the learning result storage area 409, but is not limited to this. For example, the drive identifier 408 may include the version information 1101.

In the above description, an example has been described in which the divided temperature region corresponds to the device temperature of the information recording / reproducing device. However, the present invention is not limited to this. For example, the section temperature area may correspond to the ambient temperature of the information recording medium.

The format of the information recording medium is ZC
AV (Zone Constant Angular V
EROCITY) or ZCLV (Zone C)
(instant Linear Velocity), a plurality of regions divided in the radial direction are defined as Zones.
It may be a unit. ZCAV is provided with a zone of the information recording medium so as to be rotated at a constant rotation speed.
V is provided with a zone of the information recording medium so as to rotate at a constant linear velocity.

In the above description, the temperature recording / reproducing condition 1
The recording / reproducing condition stored in 103 is a recording power condition, but is not limited to this. The recording / reproducing condition may be, for example, a recording pulse condition.

Although the area recording / reproducing condition 1102 includes the temperature recording / reproducing condition 1103 in which the device temperature ranges from 0 ° C. to 70 ° C. in steps of 10 ° C., the present invention is not limited to this.

Although FIG. 11 shows an example in which the area recording / reproducing conditions of a certain area X include the temperature recording / reproducing conditions of a plurality of divided temperature areas, the present embodiment is not limited to this. . If the drive information area stores at least one of the area recording / reproducing condition and the temperature recording / reproducing condition, it is possible to acquire a corresponding appropriate recording / reproducing condition.

(Embodiment 5) In Embodiment 5, the information recording medium described in Embodiment 4 is used. The block diagram showing the configuration of the information recording / reproducing device according to the fifth embodiment of the present invention is the same as that of information recording / reproducing device 500 shown in FIG.

The procedure for acquiring the recording / reproducing conditions corresponding to the sectioned area for recording and reproducing data and the sectioned temperature area of the device temperature of the optical disk apparatus according to the present embodiment will be described below.

FIG. 12 shows a recording process, a recording power learning procedure, a recording / reproducing condition list reading process, and a recording / reproducing condition list updating process according to the fifth embodiment of the present invention. This processing is executed by the recording control unit 520, the recording power learning processing unit 573, the recording / reproducing condition list reading unit 571, and the recording / reproducing condition list updating unit 572.

After activating the optical disk device 500 or mounting the optical disk in the optical disk device 500, the recording / reproducing condition list reading section 571 reads the recording / reproducing condition list from the drive information area 403 and reads the recording / reproducing condition list. The information is stored in the information storage buffer 540 (step 1201). Next, after receiving the recording command through the command processing unit 510 (step 1202), the recording control unit 520 measures the device temperature of the optical disk device (step 1203), and the recording / reproducing condition list is stored in the drive information storage buffer 540. Recording instruction area indicated by the recording command,
A search is performed to determine whether there is a recording power condition suitable for the temperature of the optical disk device (step 1204). This search is performed, for example, for each of the recording and reproduction conditions included in the recording and reproduction condition list, the manufacturer identifier and the drive identifier included in the recording and reproduction conditions, and the optical disk device 500.
And searching for recording / reproducing conditions that match the manufacturer identifier and the drive identifier held by.

If there is a recording / reproducing condition in which the maker identifier and the drive identifier match, an area recording / reproducing condition 1102 corresponding to the sectioned area including the recording instruction area indicated by the recording command, and
03 temperature recording / reproducing conditions 1103 that correspond to both the temperature range of the optical disc device 500 measured in step 03
Is searched in the learning result storage area 409, and it is determined whether an effective recording power condition is stored in the corresponding section area and the section temperature area of the apparatus temperature. The determination as to whether the effective recording power condition is stored in the temperature recording / reproducing condition 1103 of the divided temperature region is made, for example, in a case where the recording power condition is represented by a two-digit hexadecimal number, a value that is impossible as the recording power condition of 00h. Is stored, it is determined that the recording power condition is not stored. If a value other than 00h is not stored, it is determined that the recording power condition is stored. Note that the determination is not limited to this method.

In step 1204, when it is determined that the available recording power condition is included in the recording / reproducing condition list (“Ye
s "), the recording control unit 520 reads the available recording power condition (step 1206), and executes the recording process using the recording power condition (step 120).
9). When it is determined in step 1204 that the available recording / reproduction conditions are not included (step 120
(“No” in the determination process of No. 5), the recording power learning processing unit 573 stores the data to be recorded in the data buffer 550, suspends the recording process, and executes the recording power learning in the recording instruction area indicated by the recording command. Then, a recording power condition is obtained (step 1207).

After the recording power learning is completed, the recording / reproducing condition list updating unit 572 creates a recording / reproducing condition list using the obtained recording power conditions, and records the recording / reproducing condition list in the drive information area. To update the drive information (recording / reproduction condition list) (step 12).
08). Thereafter, the recording control unit 520 records the data stored in the data buffer 550 in the recording instruction area indicated by the recording command using the acquired recording power condition (Step 1209). The recording power learning processing in step 1207 and the recording processing in step 1209 have been described in the first embodiment. In FIG. 12, only the obtained recording power condition is updated in the recording / reproducing condition list. However, the recording / reproducing condition calculated in step 1206 may be updated in the recording / reproducing condition list.

As described above, the recording power learning processing section 573
The drive information (recording / reproducing condition list) is updated using the recording power condition obtained by the above-described method. For example, when the next recording command is received, the drive information (recording / reproducing condition list) is read out, so that the recording power learning is performed. Can be reduced, and as a result, it is possible to reduce the standby time due to the recording power learning.

In the fifth embodiment, the recording power learning process and the recording process are performed using the first embodiment, but the present invention is not limited to this. For example, the second embodiment or the third embodiment may be used.

In the above description, the recording power condition is described as the recording / reproducing condition, but the recording / reproducing condition is not limited to the recording power learning. The recording and reproduction conditions include, for example, recording pulse conditions.

Although FIG. 12 shows an example in which the area recording / reproducing conditions of a certain area X include the temperature recording / reproducing conditions of a plurality of divided temperature areas, the present embodiment is not limited to this. . If the drive information area stores at least one of the area recording / reproducing condition and the temperature recording / reproducing condition, it is possible to acquire a corresponding appropriate recording / reproducing condition.

(Embodiment 6) In Embodiment 6, learning of recording / reproduction conditions is performed using the information recording medium described in Embodiment 4. The block diagram showing the configuration of the information recording / reproducing device according to the sixth embodiment of the present invention is the same as that of information recording / reproducing device 500 shown in FIG. I do.

Here, the recording power condition will be described as a specific example of the recording / reproducing condition. FIG. 13 is a graph showing an example of a change in the optimum recording power condition from the inner circumference to the outer circumference in the radial direction of a certain optical disk. Here, the radius K is a positive number. FIG. 14 is a graph showing an example of the relationship between the device temperature of an optical disk device for an optical disk and the optimum recording power condition. Here, the device temperature T is an arbitrary number. As described above, the optimum recording power condition is often that the amount of change is constant with respect to the radial direction of the optical disk (that is, the position where data is recorded / reproduced) and the device temperature.

FIG. 15 shows the procedure of recording processing, recording power learning, reading processing of a recording / reproducing condition list, and updating processing of a recording / reproducing condition list in Embodiment 6 of the present invention. This processing includes a recording control section 520, a recording power learning processing section 573, and a recording / reproduction condition list reading section 57.
1 and the recording / reproducing condition list updating unit 572.

Steps 1501 to 1505
Steps 1506 and 1512 correspond to steps 1201 to 1205, 1206, and 1202 shown in FIG.
Same as 9. Therefore, the explanation is omitted.

Here, the recording power condition to be acquired is referred to as a first recording power condition, and is used to calculate the first recording power condition when the first recording power condition is not recorded. The recording power condition is called a second recording power condition.

If the determination in step 1505 is No, that is, if there is no first usable recording power condition, the recording power learning processing unit 573 stores the data to be recorded in the data buffer 550, and performs the recording process. After the interruption, it is determined whether at least one second available recording power condition is stored in another temperature recording / reproducing condition of the same area recording / reproducing condition, or in another area recording / reproducing condition. Is performed (step 1507). Second
If it is determined that there is a usable recording power condition (“Yes” in the determination of step 1507), the recording power learning processing unit 573 determines the second usable recording power condition and the recording in the radial direction of the optical disc. Using at least one of the change amount of the power condition and the change amount of the recording power condition related to the device temperature of the optical disk device, the recording power condition for the area indicated by the device temperature and the recording command measured in step 1503 is calculated. I do. FIG.
In 5, only the obtained recording power condition is updated in the recording / reproducing condition list. However, the recording / reproducing condition calculated in step 1506 may be updated in the recording / reproducing condition list.

For example, when a recording command including the content to be recorded in the area 2 is received, the second available recording power condition is searched from the recording / reproducing condition, and as a result, the recording power condition in the adjacent area 1 is 10 [mW]. ]. The amount of change in the recording power condition in the radial direction of the optical disk is 0.2 for each change of the area.
[MW] Assuming that it is known to change,
The optimum recording power condition for the recording instruction area indicated by the recording command is calculated as 10.2 [mW].

Next, the recording power learning processing section 573 executes test recording using the calculated recording power condition (step 1509). If the test recording is successful (“Yes” in the determination of step 1509), the recording / reproducing condition list updating unit 572 updates the drive information (recording / reproducing condition list) using the recording power condition. Thereafter, using the calculated recording power condition, the data buffer 5
The data stored in 50 is recorded in the recording instruction area indicated by the recording command (step 1512).

On the other hand, if the test recording has failed (“No” in the determination of step 1509), the recording power learning processing unit 573 executes the recording power learning in the recording instruction area indicated by the recording command, and obtains the recording power condition. (Step 1510).

[0187] After the recording power learning is completed, the recording / reproducing condition list updating unit 572 creates a recording / reproducing condition list using the obtained recording power conditions, and records the recording / reproducing condition list in the drive information area. To update the drive information (recording / reproduction condition list) (step 15).
11). Thereafter, the recording control unit 520 records the data stored in the data buffer 550 in the recording instruction area indicated by the recording command using the obtained recording power condition (step 1512). The recording power learning process in step 1510 and the recording process in step 1512
This has already been described in the first embodiment.

As described above, for example, when the optical disk apparatus has a certain apparatus temperature, even if the recording power condition corresponding to the section area including the recording instruction area indicated by the recording command is not included in the recording / reproducing condition, the other section may be used. If the recording power condition relating to the area and other device temperatures is included in the recording / reproducing condition, the optimum recording power condition is calculated using the recording power condition and a known matter (for example, a predetermined conditional expression). As a result, the possibility of executing the recording power learning is reduced. Therefore, the time required for the recording power learning can be reduced, and the standby time can be reduced by learning the recording / reproducing conditions.

In the above description, the recording power learning processing and the recording processing are performed using the first embodiment.
It is not limited to this. For example, the second embodiment or the third embodiment may be used.

In the above description, the target recording power condition is calculated by using the recording power condition relating to another area or another device temperature. However, the calculated recording power condition is utilized by using the calculated recording power condition. It may be used to determine whether the recording power condition obtained by the recording power learning is correct. Further, the target recording power condition may be calculated using the recording power condition relating to at least one of the other area and the other optical disk device temperature.

In the above description, the recording and reproducing conditions are
Although the recording power condition for performing the recording power learning using the recording area has been described, the recording / reproducing condition is not limited to the recording power condition. For example, the recording / reproducing condition may be a recording pulse condition.

(Embodiment 7) In Embodiment 7, the features of the information recording medium described in Embodiment 6 are used. A block diagram showing the configuration of the information recording / reproducing apparatus according to Embodiment 7 of the present invention is shown in FIG.
0, and the information recording / reproducing apparatus 500 has already been described in the first embodiment, and will not be described.

Here, the recording power condition will be described as a specific example of the recording / reproducing condition.

The area recording / reproducing conditions 1102 shown in FIG.
Further, the number of temperature recording / reproducing conditions 1103 is finite. Therefore, as the area recording / reproducing condition 1102, for example, one area recording / reproducing condition 1102 is provided for each of the divided areas obtained by dividing the optical disc into a plurality in the radial direction.
It is assumed that 2 is obtained at the center position in the radial direction of each sectioned area. Also, the temperature recording / reproducing condition 1103
Provides, for example, one temperature recording / reproducing condition 1103 for every 10 ° C. in the range of 0 ° C. to 70 ° C., and the temperature recording / reproducing condition 1103 is, for example, a temperature recording / reproducing condition obtained at 20 ° C. Assume that it is a reproduction condition.

However, depending on the position of the divided area for which the recording power learning was obtained and the device temperature of the optical disk device at that time, the position of the divided area indicated by the area recording / reproducing condition 1102 or the device indicated by the temperature recording / reproducing condition 1103 May not match temperature.

In the seventh embodiment, the recording of the recording power is performed using the characteristics of the recording power condition described in the sixth embodiment, or the area recording is performed in step 1511 regardless of the apparatus temperature at that time. Play condition 11
02 and a method of calculating the value stored in the temperature recording / reproducing condition 1103 will be described.

The procedures of recording processing, recording power learning, reading processing of a recording / reproducing condition list, and updating processing of a recording / reproducing condition list in the seventh embodiment are the same as those shown in FIG. Has already been described in the fifth embodiment, and will not be described.

FIG. 16 shows an example of a change in the optimum recording power condition in the X-th area of the divided area obtained by dividing the optical disk into a plurality in the radial direction. Here, X is an integer of 0 or more.

For example, it is assumed that the radius position of the area where the recording power learning has been performed in step 1207 is a position (Q in FIG. 16) which is three-fourths from the inner circumference in the area X. The recording / reproducing condition list updating unit 572 calculates the recording power condition to be stored in the area recording / reproducing condition 1102 corresponding to the area X, using the obtained recording power condition and the amount of change of the recording power condition in the radial direction of the optical disc. And
The drive information (recording / reproduction condition list) is updated (step 1508). For example, the difference between the optimum recording power conditions at the inner circumference and the outer circumference of the same area is 0.4 [mW], and the recording power condition obtained at the position Q in FIG.
If it is [mW], it is calculated that the recording power condition stored in the area recording / reproducing condition corresponding to the area X is 10.9 [mW].

FIG. 17 shows the relationship between the device temperature of the optical disk device for a certain optical disk and the optimum recording power condition.
The example shown about the apparatus temperature around 15 degreeC to 25 degreeC is shown.

For example, when the recording power learning is performed in step 1207, the device temperature of the optical disk device becomes 23.
Suppose it is ° C. Recording / reproducing condition list updating unit 5
Reference numeral 72 denotes 2 using the obtained recording power condition and the amount of change in the recording power condition related to the device temperature of the optical disc device.
The recording power condition stored in the temperature recording / reproducing condition 1103 corresponding to 0 ° C. is calculated, and the drive information (recording / reproducing condition list) is updated (steps 1508 and 151).
1). For example, each time the device temperature changes by 1 ° C., the optimum recording power condition decreases by 0.1 [mW], and the device temperature decreases by 23 mW.
When the recording power condition at 10 ° C. was 10 [mW], 2
The recording power condition stored in the temperature recording / reproducing condition corresponding to 0 ° C. is calculated to be 10.3 [mW].

As described above, the radial position of the sectioned area where the recording power learning has been performed, or the device temperature of the optical disk apparatus at that time is determined by the area indicated by the area recording / reproducing condition, or
Even when the temperature recording / reproducing condition does not correspond to the device temperature of the optical disk, it is possible to calculate an appropriate recording power condition using the recording power condition and a matter (for example, a predetermined conditional expression) known in advance. It is possible. As a result, it is possible to calculate the optimum recording power condition for the area indicated by the area recording / reproducing condition and the device temperature indicated by the temperature recording / reproducing condition, and it is possible to efficiently perform the next recording power learning.

FIG. 18 is a graph showing an example of the relationship between the optimum recording power condition and the radial position on the optical disc having the ZCLV format. FIG.
5 is a graph showing an example of a relationship between an optimum recording power condition and a radial position in an optical disc having a ZCLV format and having an optimum recording power condition changing from the inner circumference to the outer circumference.

When the recording power condition changes as shown in FIGS. 18 and 19, it is possible to calculate the optimum recording power condition PW in each area from the calculation formula PW = aX + bn. Here, a is the change amount of the recording power condition with respect to the previously known radius position, X is the radius position, b
n is a fixed value that differs for each region. As described above, when the conditional expression relating to the change in the recording power condition is different for each region, for example, a conditional expression for calculating the optimal recording power condition for each region is obtained in advance, and the radial position at which the recording power condition is obtained is located. Accordingly, an area recording / reproducing condition corresponding to the area may be calculated.

[0205] In the above description, the recording power condition was described as the recording / reproducing condition, but the recording / reproducing condition is not limited to the recording power condition. The recording and reproduction conditions include, for example, recording pulse conditions.

(Embodiment 8) In the above-described Embodiments 1 to 7, specific examples of the recording / reproducing conditions have been described centering on the recording power condition. In the present embodiment, a focus position condition will be described as a specific example of the recording / reproducing condition.

FIG. 20 is a graph showing a change in the optimum focus position condition from the inner circumference to the outer circumference in the radial direction of a certain optical disk. FIG. 21 is a graph showing the change of the optimum focus position condition from the inner circumference to the outer circumference in the radial direction of a certain optical disc for each device temperature at that time. FIG.
, T indicates the temperature, where T1 is higher than T2.

As described above, the change amount of the optimum focus position condition with respect to the radial position of the optical disk is often constant. In addition, when the device temperature is different, the optimum focus position condition at the same radial position is different, but the amount of change from the inner circumference to the outer circumference of the optical disk is often the same even when the device temperature is different.

As described above, even in the case of the focus position condition, it is desirable to obtain the focus position condition corresponding to the radial position of the optical disk and / or the device temperature in order to perform focusing under appropriate conditions.

In the graphs shown in FIGS. 20 and 21, the variation is constant from the inner circumference to the outer circumference of the radial position of the optical disk irrespective of the apparatus temperature, but the variation (slope) varies according to the apparatus temperature. It is possible.

Further, in order to explain the relationship between the radial position and the optimum recording power condition, as shown in FIGS. 18 and 19, the change of the optimum focus position condition with respect to the radial position changes from the inner circumference to the outer circumference. It need not be continuous.

[0212] A search process in which a focus position condition has been acquired will be described below as an example of the recording / reproducing condition.

The focus position condition can be included in the area recording / reproducing condition 1102 (see FIG. 11). Each of the plurality of area recording / reproducing conditions 1102 may include a plurality of temperature recording / reproducing conditions 1103. When the focus position conditions at the inner and outer positions of the optical disc are obtained and the focus position condition in the entire radial direction can be calculated from the two focus position conditions, the number K of the area recording / reproducing conditions may be two.

FIG. 22 shows a procedure for learning the focus position condition. For example, this procedure is performed at startup. This learning process is performed by the temperature measurement unit 56 of the optical disk device 500.
0, which is executed by the search control processing unit 590 and the focus position learning processing unit 574.

First, the temperature measurement processing section 560 measures the device temperature at that time (step 2201).
Next, after moving to a learning area located on the inner periphery of the optical disk by the search control processing unit 590 (step 2202),
The focus position learning processing unit 574 performs focus position learning and obtains a focus position condition for the inner peripheral position (step 2203). Subsequently, after moving to the learning area located on the outer periphery of the optical disk by the search control processing unit 590 (step 2204), focus position learning is performed to obtain the focus position condition of the outer periphery (step 220).
5). Subsequent search processing is performed using the focus position conditions obtained on the inner circumference and the outer circumference.

In this case, the focus position learning is performed using the learning areas located on the inner circumference and the outer circumference, but the present invention is not limited to this. For example, focus position learning may be performed at an arbitrary radial position in the data area, and focus position learning may be performed in another data area that is at least a certain distance in the radial direction from the learning point.

FIG. 23 shows the procedure of the search process. The search process, for example, receives a recording command or a playback command,
This is performed when moving to the recording / reproduction instruction area indicated by the command. This processing is performed by the search control processing unit 590 and the focus position learning processing unit 574 of the optical disc device 500.
Performed by

The search processing unit 590, which has been instructed to perform the search process (so-called seek process) through the command processing unit 510, checks the target radius position of the search (step 2).
301). Next, the focus position learning processing unit 574
The focus position condition of the search target radius position is calculated using the two focus position conditions obtained earlier (step 2).
302). For example, in FIG. 20, when the focus position conditions at the position S and the position E are obtained, and the position P located in the middle of the position S and the position E is the target radius position of the search,
The focus position condition at the position P is calculated by {(focus position condition at the position S) + (focus position condition at the position E)} 2. Next, the calculated focus position condition is set, and the head is moved to the target radius position (step 2303).

As a result, it is possible to obtain the optimum focus position condition in accordance with the radial position of the optical disk. When performing the search processing, the optimum focus position condition can be obtained without actually obtaining the focus position condition of the target radial position. It becomes possible to use the position condition.

FIG. 24 shows the procedure of a search process when the device temperature changes. FIG. 24 shows a procedure in which the apparatus temperature is also taken into account in FIG. By such a search process, a recording command or a reproduction command is received, and the head is moved to a recording / reproduction instruction area indicated by the command. This learning process includes a search control unit 590, a temperature measurement unit 560, a recording / reproducing condition list updating unit 572,
This is executed by the focus position learning processing unit 574.

The search control unit 590, which has been instructed to perform a search process (so-called seek process) through the command processing unit 510 (step 2401), first obtains a search target position in the radial direction (step 2402). Next, the temperature measuring unit 560 measures the device temperature (Step 2403). Thereafter, the focus position learning processing unit 57
4 judges whether a search operation is possible (step 2)
404). The determination method may be based on whether or not a focus position condition adapted to the previously acquired device temperature is stored. When the focus position condition suitable for the acquired apparatus temperature is held (“Yes” in the determination of step 2404), the focus position learning processing unit 57
4 calculates a focus position condition corresponding to the search target position (step 2405), sets the calculated focus position condition, and executes a search process (step 240).
9). On the other hand, for example, when the device temperature changes due to continuous use for a long time and the focus position condition suitable for the obtained device temperature is not held (“No” in the determination of step 2404), the focus position The learning processing unit 574 determines whether or not focus position learning is possible (Step 2406). This determination may be, for example, whether or not there is a learning area where focus position learning can be performed at or near the search target position. If the focus position learning cannot be performed (“No” in the determination of step 2406), the focus position learning processing unit 574 reuses, for example, the device temperature used in performing the previous search process, and is suitable for the device temperature. A focus position condition is calculated (step 2405). Next, a search process is executed using the calculated focus position condition (step 2409). If focus position learning can be performed (“Ye
s ”), the focus position learning processing unit 574 executes learning, and obtains a focus position condition (step 240).
7). The recording / reproducing condition list updating unit 572 updates the recording / reproducing condition list based on the obtained focus position condition and device temperature. For example, in FIG. 21, when the device temperature measured in the previous search process is T1 and the device temperature measured in the current search process is T2, the focus position condition at the position S corresponding to the device temperature T2 is , (Focus position condition at position S at device temperature T1) + {(focus position condition at position P at device temperature T2) − (focus position condition at position P at device temperature T1)}. The corresponding focus position condition at position E is (focus position condition at position E at device temperature T1) +１ (focus position condition at position P at device temperature T2) − (focus at position P at device temperature T1). (Position condition) The recording / reproducing condition list is updated using the focus position condition calculated in this way. Finally, a search process is performed using the acquired focus position condition (step 2409).

Although the radius position where the learning is performed is set as the search target position here, the present embodiment is not limited to this. For example, learning may be performed at the radial position at the time of receiving the command, and the focus position condition of the search target position may be calculated using the acquired inner and outer focus position conditions.

FIG. 25 shows the procedure of a search process, a recording / reproducing condition list reading process, a focus position learning process, and a recording / reproducing condition list updating process. This processing is executed by the search control processing unit 590, the focus position learning processing unit 574, the recording / reproducing condition list reading unit 571, and the recording / reproducing condition list updating unit 572 of the optical disk device 500.

After starting the optical disk device 500 or mounting the optical disk in the optical disk device, the recording / reproducing condition list reading section 571 reads the recording / reproducing condition list from the drive information area and stores the read / write condition list in the recording / reproducing condition list storage buffer 540. After storing (Step 2501), the search control unit 590 receiving a search processing instruction through the command processing unit 510 or the like (Step 2502) measures the device temperature of the optical disk (Step 2503) and returns the current device temperature. The recording / reproducing condition list is searched to determine whether there is a focus position condition corresponding to (step 250)
4). This search includes, for example, searching for a recording / reproducing condition in which the maker identifier and the drive identifier included in the recording / reproducing condition and the maker identifier and the drive identifier held by the optical disk device match. If there is a recording / reproducing condition that matches the manufacturer identifier and the drive identifier, a temperature recording / reproducing condition area corresponding to the device temperature of the optical disk device measured in step 2503 included in the recording / reproducing condition is searched, and the corresponding device temperature is determined. It may be determined whether or not a corresponding valid focus position condition is stored. The determination as to whether or not the valid focus position condition is stored is performed, for example, when the focus position condition is represented by a two-digit hexadecimal number.
If a value that is impossible as the focus position condition of 0h is stored, it may not be stored, and if a value other than 00h is stored, it may be stored. Note that the determination is not limited to this method.
If it is determined in step 2504 that the available focus position condition is included in the recording / reproducing condition list (“Yes” in the determination of step 2505),
The focus position learning processing unit 574 calculates a focus position condition of the search target radial position using the available focus position condition (step 2506). On the other hand, when it is determined in step 2504 that the available focus position condition is not included (step 2505)
("No" in the determination process of (2)), the focus position learning processing unit 574 executes the focus position learning at or near the search target position (step 2507). Next, the recording / reproducing condition list updating unit 572 creates a recording / reproducing condition list using the calculated focus position condition, and records the recording / reproducing condition list in the drive information area, thereby obtaining the drive information (recording / reproducing condition). List) is updated (step 2508). The updating method has already been described above. Finally, the search control unit 590 moves to the search target radial position using the acquired focus position condition (step 2509).

As described above, the focus position learning processing section 5
The drive information (recording / reproducing condition list) is updated using the focus position condition obtained in step 74, and, for example, when a search command is received after the next startup, the drive information (recording / reproducing condition list) is read to obtain the focus position. It is possible to reduce the possibility of performing learning. As a result, it is possible to reduce the standby time due to the focus position learning.

The recording power conditions described in the first to seventh embodiments are conditions for recording data, and the optical disc may be applied to a rewritable disc or a write-once disc. On the other hand, since the focus position condition is used for both recording and reproduction, the optical disc is applicable not only to a rewritable disc and a write-once disc, but also to a read-only disc.

[0227]

According to the present invention, after the recording data is stored in the data buffer and the recording process is interrupted, recording learning is performed in the recording instruction area indicated by the recording command. Thereafter, a recording process is performed using the obtained recording / reproduction conditions. As a result, the recording / reproducing conditions suitable for the recording instruction area can be obtained, and the possibility of recording failure is reduced. Thus, by obtaining the recording / reproducing condition corresponding to the recording instruction area for recording / reproducing on the information recording medium, it is possible to perform appropriate recording / reproducing.

According to the present invention, after the recording data is stored in the data buffer and the recording process is interrupted, a search is made for an unused spare area in a spare area near the recording instruction area indicated by the recording command. In this case, the recording / reproducing condition is learned in the spare area, and when there is no spare area, the recording / reproducing condition is learned in the recording instruction area indicated by the recording command. afterwards,
A recording / reproducing process is performed using the obtained recording / reproducing conditions. As a result, a recording power condition suitable for a recording instruction area for recording and reproducing data can be obtained, and the possibility of recording failure is reduced. Further, it is possible to prevent the recording instruction area for recording and reproducing the user's data from deteriorating, thereby preventing the number of times of recording from being reduced.

According to the present invention, after recording data is stored in a data buffer and recording processing is interrupted, data is recorded on an information recording medium provided with a learning-only area near a recording instruction area for recording data. The recording learning is performed in a learning-only area close to the area. Thereafter, a recording process is performed using the obtained recording / reproduction conditions. This makes it possible to determine the recording / reproducing conditions suitable for the recording / reproducing area without having to secure an area for learning the recording / reproducing conditions, thereby reducing the possibility of recording failure. Further, it is possible to prevent the area for recording and reproducing the user's data from deteriorating, thereby preventing the number of recordings from being reduced.

According to the present invention, the information recording medium has version information indicating an update history regarding the firmware of the information recording / reproducing device. This makes it possible to determine whether the recording / reproducing conditions can be reused when updating the recording / reproducing condition list after a firmware change has occurred, and to reduce the standby time for learning the next recording / reproducing conditions. Becomes possible.

According to the present invention, the information recording medium has a recording / reproducing condition including a plurality of area recording / reproducing conditions corresponding to a plurality of divided areas and a plurality of temperature recording / reproducing conditions corresponding to the device temperature of the optical disc apparatus. It has a drive information area for storing conditions. When receiving the recording command, the information recording / reproducing device performs a search to determine whether the recording / reproducing condition includes an optimal recording / reproducing condition. If the drive information area does not store the optimum recording / reproducing condition, the recording / reproducing condition is learned to determine the recording / reproducing condition. Recording and reproduction are performed using the obtained recording and reproduction conditions. The obtained recording / reproduction conditions are updated to a recording / reproduction condition list. On the other hand, when the drive information area stores the optimum recording / reproducing condition, the recording / recording condition is read and the recording / reproducing is performed. This reduces the possibility of learning the recording and playback conditions,
It is possible to reduce the standby time by learning the recording and reproducing conditions.

According to the present invention, a recording instruction area to be recorded using a recording / reproducing condition relating to an apparatus temperature different from the division area including the recording instruction area to be recorded or an apparatus temperature different from the apparatus temperature at that time. And the recording / reproducing conditions corresponding to the device temperature at that time are calculated. This makes it possible to calculate the optimum recording / reproducing condition even if the recording / reproducing condition corresponding to the recording instruction area to be recorded and the device temperature at that time are not stored in the drive information area. It is possible to reduce the waiting time by learning.

According to the present invention, when the radial position at which the recording / reproducing condition is to be obtained does not match the radius position indicated by the area recording / reproducing, or when the radial position at which the recording / reproducing condition is to be obtained and the device temperature are different from the area recording. When the temperature does not match the device temperature indicated by the temperature recording / reproducing condition included in the reproducing condition, the recording / reproducing condition corresponding to the desired radial position area, or And the recording / reproducing conditions corresponding to the desired radial position area and the device temperature are calculated. This makes it possible to efficiently learn the recording and reproduction conditions.

[Brief description of the drawings]

FIG. 1 is a diagram showing a structure of an information recording medium 101 according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing a structure of a disk information area 104 shown in FIG.

FIG. 3 is a diagram showing the relationship between the structure of an ECC block and the structure of a sector 103 provided on the optical disc 101.

FIG. 4 is a diagram showing a structure of drive information 406 recorded in a disc identification area 208 shown in FIG.

FIG. 5 is a configuration diagram of an information recording / reproducing device 500 according to Embodiment 1 of the present invention.

FIG. 6A is a flowchart illustrating a procedure of a recording process and a recording power learning process according to the first embodiment of the present invention.

FIG. 6B is a flowchart showing a procedure of another recording process and a recording power learning process according to the first embodiment of the present invention.

FIG. 7 is a configuration diagram of a format of an optical disc in Embodiment 2 of the present invention.

FIG. 8 is a flowchart showing a procedure of a recording process and a recording power learning process according to the second embodiment of the present invention.

FIG. 9 is a configuration diagram of an optical disk format according to Embodiment 3 of the present invention.

FIG. 10 is a flowchart illustrating a procedure of a recording process and a recording power learning process according to the third embodiment of the present invention.

FIG. 11 is a configuration diagram of an area recording / reproducing condition and a temperature recording / reproducing condition in Embodiment 4 of the present invention.

FIG. 12 shows a recording process, a recording / reproducing condition list reading process, a recording power learning process,
6 is a flowchart illustrating a procedure of a recording / reproducing condition list updating process.

FIG. 13 is a graph showing a correlation between a radial direction of an information recording medium and a recording power condition according to a sixth embodiment of the present invention.

FIG. 14 is a graph showing a correlation between a device temperature and a recording power condition of an information recording / reproducing device according to a sixth embodiment of the present invention.

FIG. 15 shows recording processing, recording / reproduction condition list reading processing, recording power learning processing, and the like in Embodiment 6 of the present invention.
6 is a flowchart illustrating a procedure of a recording / reproducing condition list updating process.

FIG. 16 is a graph showing a correlation between a radial direction of an information recording medium and a recording power condition according to a seventh embodiment of the present invention.

FIG. 17 is a graph showing a correlation between a device temperature and a recording power condition of an information recording / reproducing device according to a seventh embodiment of the present invention.

FIG. 18 is a graph showing a correlation between a radial direction of an information recording medium and a recording power condition according to a seventh embodiment of the present invention.

FIG. 19 is a graph showing a correlation between a radial direction of an information recording medium and a recording power condition according to the seventh embodiment of the present invention.

FIG. 20 is a graph showing a relationship between a radial direction of an information recording medium and a focus position condition.

FIG. 21 is a graph showing the relationship between the radial direction of the information recording medium, the device temperature of the information recording / reproducing device, and the focus position condition.

FIG. 22 (at start-up) in the eighth embodiment of the present invention.
It is a flowchart which shows the procedure of a focus position learning process.

FIG. 23 is a diagram illustrating (search processing,
9 is a flowchart illustrating a procedure of a focus position learning process.

FIG. 24 is a diagram showing a search processing,
9 is a flowchart illustrating a procedure of a focus position learning process.

FIG. 25 is a diagram illustrating an example of (search processing,
It is a flowchart which shows the procedure of a recording / reproducing condition list reading process, a focus position learning process, and a recording / reproducing condition list updating process.

[Explanation of symbols]

 500 Disc recording / reproduction drive 510 Command processing unit 520 Recording control unit 525 Recording / reproduction control unit 530 Reproduction control unit 540 Drive information storage buffer 550 Data buffer 560 Temperature measurement unit 570 Learning information processing unit 571 Recording / reproduction condition list reading unit 572 Recording / reproduction conditions List updating unit 573 Recording power learning processing unit 574 Focus position learning processing unit 580 I / O bus 590 Search control unit 701 Map area 702 User area 703 Spare area 901 Data area 902 Learning area 1101 Version information 1102 Area recording / reproducing condition 1103 Temperature recording Play conditions

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Motoshi Ito 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 5D044 DE52 DE64 DE70 DE78 DE83 5D090 AA01 BB04 CC01 CC04 CC12 CC14 DD01 EE01 EE11 FF27 GG32 GG33 HH01 HH03 JJ07

Claims (77)

[Claims] 1. An information recording medium comprising: a data area for recording data; and a drive information area for recording at least one drive information, wherein the data area has a radius of the information recording medium. An information recording medium, comprising: a plurality of divided areas divided in directions, wherein each of the at least one drive information includes recording / reproducing conditions corresponding to one of the plurality of divided areas. 2. The information recording medium according to claim 1, wherein the recording / reproducing condition defines an operating condition when an information recording / reproducing apparatus capable of mounting the information recording medium records and reproduces data. 3. The method according to claim 1, wherein each of the plurality of divided areas includes a learning area for obtaining the recording / reproducing condition.
An information recording medium according to claim 1. 4. The data area includes a user area, and a spare area including a replacement area that can be used in place of a defective area included in the user area. 2. The information recording medium according to claim 1, which is used to determine recording and reproduction conditions. 5. The information recording medium according to claim 1, wherein the data area includes a learning-only area used only for obtaining the recording / reproducing condition. 6. Each of the plurality of segmented areas is a ZC
The information recording medium according to claim 1, wherein the information recording medium corresponds to at least one zone according to either the LV system or the ZCAV system. 7. The drive information area includes N ECC blocks for calculating an error correction code, each of the N ECC blocks includes a plurality of sectors, and each of the plurality of recording / reproducing conditions is 2. The information recording medium according to claim 1, wherein the information is recorded in one corresponding sector among the plurality of sectors, and N is an integer of 1 or more. 8. The drive information further includes version information indicating a condition under which the recording / reproducing condition is obtained.
The information recording medium according to claim 1. 9. The information recording medium according to claim 1, wherein at least one of the plurality of divided areas includes at least one recording / reproducing instruction area. 10. An information recording medium comprising: a data area for recording data; and a drive information area for recording at least one drive information, wherein a range of an ambient temperature of the information recording medium is set. The temperature range shown is
An information recording medium, comprising: a plurality of divided temperature areas; wherein each of the at least one drive information includes a recording / reproducing condition corresponding to one of the plurality of divided temperature areas. 11. The information recording medium according to claim 10, wherein the recording / reproducing condition specifies an operating condition when an information recording / reproducing apparatus capable of mounting the information recording medium records and reproduces data. 12. The drive information area includes N ECC blocks for calculating an error correction code.
ECC blocks each include a plurality of sectors,
Each of the plurality of recording / reproducing conditions is recorded in a corresponding one of the plurality of sectors.
The information recording medium according to claim 10, wherein is an integer of 1 or more. 13. The drive information according to claim 1, wherein the drive information includes version information indicating a condition required for the recording and reproduction.
0. The information recording medium according to 0. 14. An information recording / reproducing method for an information recording medium provided with a data area having a plurality of divided areas divided in a radial direction, wherein: (a) a recording / reproducing object of the plurality of divided areas; (B) acquiring a recording / reproducing condition corresponding to the designated divided region; and (c) performing recording / reproducing based on the acquired recording / reproducing condition. An information recording / reproducing method including: 15. The information recording / reproducing method according to claim 14, wherein the recording / reproducing condition specifies an operating condition when the information recording / reproducing apparatus to which the information recording medium can be mounted performs recording / reproducing. 16. The method according to claim 1, wherein the step (b) includes a step of obtaining the recording / reproducing condition by a learning process.
4. The information recording / reproducing method according to item 4. 17. The method according to claim 1, further comprising: (d) recording the recording / reproducing condition on the information recording medium.
6. The information recording / reproducing method according to item 6. 18. The information recording medium further includes a drive information area in which drive information including the recording / reproducing condition is recorded, and the step (b) includes: determining the recording / reproducing condition recorded in the drive information area. 15. The information recording / reproducing method according to claim 14, comprising a step of reading. 19. The drive information includes version information indicating a condition under which the recording / reproducing condition is obtained,
The information recording / reproducing method according to claim 18, further comprising: (e) determining whether to use or update the recording / reproducing condition based on the version information. 20. The information recording / reproducing method according to claim 19, wherein the version information includes history information on firmware of the information recording / reproducing device. 21. The information recording / reproducing method according to claim 16, wherein the step (b) includes a step of using a learning area included in each of the plurality of divided areas in the learning processing. 22. The data area includes a user area and a spare area including an alternative area that can be used in place of a defective area included in the user area. The step (b) includes: 17. The information recording / reproducing method according to claim 16, comprising the step of using an unused replacement area in the spare area. 23. The information recording / reproducing method according to claim 16, wherein in the step (b), a learning-only area included in the data area is used only in the learning processing. 24. Each of the plurality of segmented regions is Z
The information recording / reproducing method according to claim 14, wherein the information recording / reproducing method corresponds to at least one zone according to either the CLV method or the ZCAV method. 25. The information recording / reproducing method according to claim 14, wherein at least one of the plurality of divided areas includes at least one recording / reproducing instruction area. 26. An information recording / reproducing method for an information recording medium, wherein a temperature region indicating a device temperature range of the information recording / reproducing device is:
The information recording / reproducing method includes: (a) measuring the device temperature of the information recording / reproducing device; and (b) recording corresponding to the divided temperature region to which the measured device temperature belongs. An information recording / reproducing method including: obtaining a reproducing condition; and (c) performing recording / reproducing based on the obtained recording / reproducing condition. 27. The information recording / reproducing method according to claim 26, wherein the recording / reproducing condition specifies an operating condition when the information recording / reproducing apparatus capable of mounting the information recording medium records / reproduces data. 28. The method according to claim 26, wherein the step (b) includes a step of obtaining the recording / reproducing condition by a learning process.
Information recording / reproducing method described in 1. 29. The method according to claim 2, further comprising: (d) recording the recording / reproducing condition on the information recording medium.
9. The information recording / reproducing method according to item 8. 30. The information recording medium further includes a drive information area in which drive information including the recording / reproducing condition is recorded, and the step (b) comprises: determining the recording / reproducing condition recorded in the drive information area. The information recording / reproducing method according to claim 26, further comprising a step of reading. 31. The drive information includes version information indicating a condition under which the recording / reproducing condition is obtained, and (e) determining whether to use or update the recording / reproducing condition based on the version information. 31. The information recording / reproducing method according to claim 30, further comprising: 32. The information recording / reproducing method according to claim 31, wherein the version information includes history information on firmware of the information recording / reproducing device. 33. An information recording / reproducing method for an information recording medium having a drive information area for recording drive information including a plurality of recording / reproducing conditions, wherein: (a) a plurality of information included in the drive information area; Determining whether there is a first recording / reproducing condition among the recording / reproducing conditions; and (b) when there is no first recording / reproducing condition, a plurality of recording / reproducing conditions included in the drive information area Determining whether there is a second recording / reproducing condition in the data; and (c) when the second recording / reproducing condition is present, using the second recording / reproducing condition and a predetermined conditional expression. An information recording / reproducing method, comprising: calculating a first recording / reproducing condition; and (d) performing recording / reproducing based on the calculated first recording / reproducing condition. 34. The information recording / reproducing apparatus according to claim 33, wherein each of the plurality of recording / reproducing conditions defines an operating condition when an information recording / reproducing apparatus capable of mounting the information recording medium records / reproduces data. Method. 35. The information recording / reproducing method according to claim 33, further comprising: (e) recording the calculated first recording / reproducing condition in the draft information area. 36. The step (d) includes a step of performing test recording / reproduction of data under the calculated first recording / reproduction condition, and (f) the drive based on a result of the test recording / reproduction. 34. The information recording / reproducing method according to claim 33, further comprising a step of determining whether to update information or to determine the first recording / reproducing condition by a learning process. 37. The information recording medium further includes a data area for recording data, wherein the data area includes a plurality of divided areas divided in a radial direction of the information recording medium; 34. The information recording / reproducing method according to claim 33, wherein each corresponds to at least one of the plurality of divided areas. 38. The information recording / reproducing method according to claim 37, wherein the predetermined conditional expression is a function of a radius of the information recording medium. 39. The information recording / reproducing method according to claim 37, wherein the predetermined conditional expression is a function of a linear velocity of the information recording medium. 40. The information recording / reproducing method according to claim 37, wherein at least one of the plurality of divided areas includes at least one recording / reproducing instruction area. 41. A temperature region indicating a device temperature range of the information recording / reproducing device includes a plurality of divided temperature regions, and each of the plurality of recording / reproducing conditions corresponds to at least one of the plurality of divided temperature regions. Claim 33.
Information recording / reproducing method described in 1. 42. The information recording / reproducing method according to claim 41, wherein the predetermined conditional expression is a function of a device temperature. 43. Each of the plurality of segmented regions is Z
The information recording / reproducing method according to claim 33, which corresponds to at least one zone according to either the CLV method or the ZCAV method. 44. The drive information includes version information indicating a condition under which the recording / reproducing condition is obtained, and (g) determining whether to use or update the plurality of recording / reproducing conditions based on the version information. The information recording / reproducing method according to claim 33, further comprising the step of: 45. The information recording / reproducing method according to claim 44, wherein the version information includes history information on firmware of the information recording / reproducing device. 46. An information recording / reproducing apparatus for an information recording medium provided with a data area having a plurality of divided areas divided in a radial direction, wherein the plurality of divided areas are to be recorded / reproduced. An information recording / reproducing apparatus, comprising: a learning information processing unit that acquires recording / reproducing conditions corresponding to a region; and a recording / reproducing control unit that performs recording / reproducing based on the acquired recording / reproducing conditions. 47. The information recording / reproducing apparatus according to claim 46, wherein the recording / reproducing condition defines an operating condition when the information recording / reproducing apparatus records / reproduces data. 48. The information recording / reproducing apparatus according to claim 46, wherein the learning information processing section obtains the recording / reproducing condition by a learning process. 49. The information recording / reproducing apparatus according to claim 48, wherein the learning information processing section records the recording / reproducing condition on the information recording medium. 50. The information recording medium further includes a drive information area in which drive information including the recording / reproducing condition is recorded, and the learning information processing unit is configured to execute the recording / reproducing condition recorded in the drive information area. 47. The information recording / reproducing apparatus according to claim 46, wherein the information is read. 51. The drive information includes version information indicating a condition under which the recording / reproducing condition has been determined, and the learning information processing unit, based on the version information,
Determining whether to use or update the recording and playback conditions,
The information recording / reproducing device according to claim 50. 52. The information recording / reproducing method according to claim 51, wherein the version information includes history information regarding firmware of the information recording / reproducing device. 53. The information recording / reproducing apparatus according to claim 48, wherein the learning information processing section obtains the recording / reproducing condition from the learning area included in each of the plurality of divided areas by the learning process. 54. The data area includes a user area, and a spare area including a spare area that can be used instead of a defective area included in the user area. 49. The information recording / reproducing apparatus according to claim 48, wherein the recording / reproducing condition is obtained from the unused alternative area by the learning process. 55. The learning information processing unit according to claim 48, wherein the recording / reproducing condition is obtained by the learning process from a learning-only area included in the data area and used only for obtaining the recording / reproducing condition. An information recording / reproducing apparatus as described in the above. 56. Each of the plurality of segmented regions is Z
47. The information recording / reproducing apparatus according to claim 46, which corresponds to at least one zone according to either the CLV method or the ZCAV method. 57. The information recording / reproducing apparatus according to claim 46, wherein at least one of the plurality of divided areas includes at least one recording / reproducing instruction area. 58. An information recording / reproducing device for an information recording medium, wherein a temperature region indicating a device temperature range of the information recording / reproducing device includes a plurality of divided temperature regions, A temperature measuring unit that measures a device temperature of the information recording / reproducing device; a learning information processing unit that acquires a recording / reproducing condition corresponding to a divided temperature region to which the measured device temperature belongs; An information recording / reproducing apparatus comprising: a recording / reproducing control unit for performing recording / reproducing based on the information. 59. The information recording / reproducing apparatus according to claim 58, wherein the recording / reproducing condition defines an operating condition when the information recording / reproducing apparatus records / reproduces data. 60. The information recording / reproducing apparatus according to claim 58, wherein the learning information processing section obtains the recording / reproducing condition by a learning process. 61. The information recording / reproducing apparatus according to claim 60, wherein the learning information processing section records the recording / reproducing condition on the information recording medium. 62. The information recording medium further includes a drive information area in which drive information including the recording / reproducing condition is recorded, and the learning information processing section reads the recording / reproducing condition recorded in the drive information area. An information recording / reproducing apparatus according to claim 58. 63. The drive information includes version information indicating a condition under which the recording / reproducing condition is determined.
Determining whether to use or update the recording and playback conditions,
The information recording / reproducing apparatus according to claim 62. 64. The information recording / reproducing apparatus according to claim 63, wherein the version information includes history information regarding firmware of the information recording / reproducing apparatus. 65. An information recording / reproducing apparatus for an information recording medium having a drive information area for recording drive information including a plurality of recording / reproducing conditions, wherein the plurality of recording / reproducing areas included in the drive information area From the conditions, it is determined whether there is a first recording / reproducing condition. If there is no first recording / reproducing condition, it is determined whether there is a second recording / reproducing condition included in the drive information area. If the determination is that there is the second recording / reproducing condition, the learning information processing section calculates the first recording / reproducing condition using the second recording / reproducing condition and a predetermined conditional expression. A processing unit, wherein the recording and reproduction control unit records and reproduces data based on the calculated first recording and reproduction conditions;
An information recording / reproducing device comprising: 66. The information recording / reproducing apparatus according to claim 65, wherein each of the plurality of recording / reproducing conditions defines an operating condition when the information recording / reproducing apparatus records / reproduces data. 67. The information recording / reproducing apparatus according to claim 65, wherein the learning information processing section records the calculated first recording / reproducing condition in the drive information area. 68. The recording / reproducing control section performs test recording / reproducing of data under the calculated first recording / reproducing condition, and the learning information processing section performs the test recording / reproducing based on a result of the test recording / reproducing. 68. The information recording / reproducing apparatus according to claim 67, wherein it is determined whether information is updated or the first recording / reproducing condition is obtained by a learning process. 69. The information recording medium further includes a data area for recording data, the data area includes a plurality of divided areas divided in a radial direction of the information recording medium, and the plurality of recording / reproducing conditions 66. The information recording / reproducing apparatus according to claim 65, wherein each corresponds to at least one of the plurality of divided areas. 70. The information recording / reproducing apparatus according to claim 69, wherein the predetermined conditional expression is a function of a radius of the information recording medium. 71. The information recording / reproducing apparatus according to claim 69, wherein the predetermined conditional expression is a function of a linear velocity of the information recording medium. 72. The information recording / reproducing apparatus according to claim 69, wherein at least one of the plurality of divided areas includes at least one recording / reproducing instruction area. 73. A temperature region indicating a device temperature range of the information recording / reproducing device includes a plurality of divided temperature regions, and each of the plurality of recording / reproducing conditions is set to at least one of the plurality of divided temperature regions. Corresponding claim 65
An information recording / reproducing apparatus according to claim 1. 74. The information recording / reproducing apparatus according to claim 73, wherein the predetermined conditional expression is a function of an apparatus temperature. 75. Each of the plurality of segmented regions is Z
The information recording / reproducing apparatus according to claim 65, which corresponds to at least one zone according to either the CLV method or the ZCAV method. 76. The drive information includes version information indicating a condition under which a recording / reproducing condition has been obtained, and the learning information processing unit performs:
66. The information recording / reproducing apparatus according to claim 65, wherein it is determined whether to use or update the plurality of recording / reproducing conditions. 77. The information recording / reproducing apparatus according to claim 76, wherein the version information includes history information regarding firmware of the information recording / reproducing apparatus.