JP2003317250A - Optical disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain the effective utilization of a main memory part by saving an OPC execution parameter which is erased from the main memory part, to a sub-memory part, and to prevent the overlapped power calibration from being applied. <P>SOLUTION: When data are recorded on a newly mounted optical disk 1 in the state in which the OPC execution parameters are preserved until filled up in the main memory part 11, a system controller 10 confirms whether the OPC execution parameters of an optical disk same as the mounted optical disk 1 are preserved in the main memory part 11 and the sub-memory part 12, and when not preserved, only a part of the main of the oldest OPC execution parameter among the parameters preserved in the main memory part 11 is saved to the sub-memory part 12, then the OPC execution parameters of the new optical disk are preserved in an after saved area in the main memory part 11. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention optimizes a recording laser power when recording data on an optical disk (CD-R) and a rewritable optical disk (CD-RW) which can be written by an optical pickup. The present invention relates to an optical disc device including an OPC control unit that performs a power calibration for performing the above and sequentially stores the execution result in a main memory unit in the device.

[0002]

2. Description of the Related Art Conventionally, in an optical disk device, a CD-
Before recording information on a write-once optical disc such as R or CD-RW, the recording laser power is optimized (OPC: Optimun
PowerControl). That is, power calibration is performed in advance to perform trial writing, and the optimum laser power for subsequent recording is determined.

OPC is a power calibration area (PCA) of an optical disk.
In this case, information having different recording laser powers is recorded, and the recorded information is reproduced.

As shown in FIG. 8, the PCA is a PMA (Program Memory Area) for temporarily storing TOC information inside the lead-in area which is the inner peripheral side of the optical disc.
) Is provided inside the PMA.

This PCA is divided into a count area and a test area, and up to 100 pieces of information can be written in each area. Ie 1
The test writing (power calibration) can be performed 00 times.

Information indicating how much the test area is used is written in the count area. Also,
The test area is divided into 100 partitions, and each partition is composed of 15 frames. That is, these 15 frames are used for one trial writing.

The laser power for trial writing is set in 15 steps from "L" to "H", and information is recorded in each frame with each laser power. And
By reproducing these pieces of information, the optimum laser power value is determined from these laser powers.

Various techniques have been conventionally proposed as a method for performing such power calibration (for example, Japanese Patent Laid-Open Nos. 11-45440 and 200).
0-99949, JP 2001-93156 A, etc.). All of these are inventions related to the technique of how efficiently and effectively performing OPC.

By the way, the data obtained as a result of performing the power calibration by such various methods, that is, the data of the optimum value of the recording laser power, together with an ID code (hereinafter referred to as a disk ID) peculiar to the optical disk. , The EEPR conventionally provided on the device side
It was stored in the main memory such as OM.

Since OPC must be carried out every time a new optical disk is loaded in the apparatus and recording is performed, the main memory section records the power calibration in each case, that is, recording according to the optical disk. The data of the optimum value of the laser power will be stored together with the disc ID.

[0011]

[Problems to be Solved by the Invention] However, the EEP
Since the capacity of the main memory such as ROM is limited,
It is impossible to store all the results of power calibration performed on various optical disks. Therefore, in the conventional device, for example, up to 15 power calibration execution results are stored, and when the 16th execution result is input, the oldest one is deleted,
After that, the newly input execution result of the power calibration is stored.

Therefore, there is a problem that the results of power calibration that can be stored are limited. In addition, for example, when an optical disc on which recording has been performed previously is loaded again into the device and recording is performed, if the data of the optimum recording laser power value that should have been stored in the main memory has already been erased, However, there is also a problem that it is necessary to perform power calibration again on the loaded optical disk.

The present invention was devised to solve such a problem, and the purpose thereof is to effectively use a limited recording area of the main memory section so that necessary information (power calibration execution result) can be obtained. (EN) An optical disc device capable of preventing erasure from a main memory unit and saving the erased power calibration execution result to another memory unit to prevent duplicate power calibration execution. It is in.

[0014]

The optical disk device of the present invention is a power calibration for optimizing a recording laser power when recording data on an optical disk (CD-RW disk) which is rewritable by an optical pickup. In the optical disc device having the OPC control means for sequentially executing the power calibration and storing the execution result in the main memory part in the device, the optical calibration is provided with the sub memory part for storing the power calibration execution result. In a state where the execution result of (1) is fully stored in the main memory section, when recording data on a newly loaded optical disc, the OPC control means performs power calibration of the same optical disc as the loaded optical disc. Results are stored in the main memory section and the sub memory section If not, the oldest execution result among the power calibration execution results saved in the main memory section is deleted and saved in the sub memory section. Power calibration is performed on the loaded optical disk, and the result of the power calibration is newly stored in the main memory unit after erasing.

According to the present invention having such characteristics,
When the result of power calibration is fully stored in the main memory unit, when recording data on a newly loaded optical disc, the OPC control means firstly performs power calibration of the same optical disc as the loaded optical disc. Check whether the execution result of the application is saved in the main memory part and the sub memory part.
As a result of this confirmation, if the power calibration has not been saved, the oldest execution result of the power calibration results saved in the main memory is deleted. At this time, O
The PC control means saves the erased execution result of the power calibration in the sub memory unit. And later
The power calibration is performed on the loaded optical disc, and the result of the power calibration is newly stored in the main memory unit after erasing.

As a result, even when an optical disk whose power calibration result has been erased from the main memory is loaded again, the power calibration result of this optical disk remains in the sub memory, so that OPC control is performed. The means does not need to perform power calibration again on the loaded optical disc,
It is possible to record (write) data on the optical disc using the power calibration execution result stored in the sub-memory unit.

Further, the optical disk device of the present invention is a rewritable optical disk (CD-RW) by an optical pickup.
When data is recorded on a disk, power calibration for optimizing the recording laser power is carried out, and the optical disk device equipped with an OPC control means for sequentially storing the execution result in the main memory part in the device. In the above, a sub memory unit for storing the result of the power calibration is provided, and the OPC control means is
When the optical disc is closed after recording data on the optical disc, the result of power calibration of the closed optical disc is erased from the main memory unit and saved in the sub memory unit.

According to the present invention having such characteristics,
When the optical disc is closed after recording data on the optical disc, the OPC control unit erases the result of power calibration of the closed optical disc from the main memory unit and saves it in the sub memory unit. As a result, the main memory unit can be effectively used. In addition, since the power calibration execution result erased from the main memory remains in the sub memory, even if an optical disc whose execution result is erased from the main memory is loaded later, Recording can be started using the remaining power calibration execution result.

According to the optical disk device of the present invention,
The OPC control unit saves only the execution result corresponding to one or a plurality of frequently used recording speeds among the execution results of the power calibration when saving to the sub-memory unit.

According to the present invention having such characteristics,
Instead of saving all the results of power calibration, one or more frequently used ones (for example,
By saving only the execution results (recording laser power optimum value) corresponding to the three types of recording speeds, a memory with a small storage capacity can be used as the sub memory unit. Even when a memory with a small storage capacity is used, a sufficient number of execution results can be stored.

According to the optical disk device of the present invention,
The main memory unit is provided with a use count recording area for recording the use count of each recording speed corresponding to the optimum recording laser power value of each recording speed as a result of the power calibration, and When recording data on the optical disc based on the result of the power calibration stored in the main memory unit, the OPC control unit further includes a count unit that counts the number of times of the recording speed actually used. When recording data on the optical disc, the recording speed actually used is counted by the counting unit, and the count value is used corresponding to the number of times of the power calibration execution result stored in the main memory unit. Characterized by rewriting by sequentially adding to the number of times of use recorded in the recording area To.

According to the present invention having such characteristics,
In the usage count recording area, when the actual data is subsequently recorded on the optical disc, the usage count of the recording speed actually used is updated and recorded, so that the latest usage count always remains.

Further, according to the optical disk device of the present invention, the OPC control means stores the number of times of use recorded in the number-of-uses recording area of the main memory unit when the OPC control unit saves the data in the sub-memory unit. On the basis of the execution result of the power calibration, only the execution result corresponding to one or more frequently used recording speeds is saved.

According to the present invention having such characteristics,
When the OPC control unit saves the data in the sub memory unit, the OPC control unit, which has the highest frequency of use among the execution results of the power calibration, is based on the latest number of times of use data recorded in the number-of-uses recording area of the main memory unit. Alternatively, it is possible to reliably select a plurality (for example, three types) of recording speeds and to save only the selected execution result (recording laser power optimum value) to the sub memory unit. That is, it is possible to leave only the minimum execution result necessary for the subsequent recording of the optical disc in the sub memory unit. Therefore, a memory having a small storage capacity can be used as the sub memory unit. Even when a memory with a small storage capacity is used, a sufficient number of execution results can be stored.

According to the optical disk device of the present invention,
The OPC control unit further includes a jumper wire that is a selection unit that selects one or both of the main memory unit and the sub memory unit, and the OPC control unit performs power calibration on the loaded optical disc. The result of power calibration of the same optical disc as the loaded optical disc is stored in either or both of the main memory unit and the sub memory unit selected by the short-circuited state of the jumper wire which is the selecting unit. It is characterized in that a search is made as to whether or not it is present.

According to the present invention having such characteristics,
It is known that the loaded optical disk has already been erased from the main memory part, for example, because the user can select whether to use the main memory part or the sub memory part depending on the shorting method of the jumper wire. In this case, the jumper wire may be short-circuited in advance so that only the sub memory unit is used. As a result, the OPC control unit can find out the result of the power calibration of the loaded optical disk by searching only the sub memory unit without searching the main memory unit.

Further, the optical disc apparatus of the present invention records the data on the optical disc (CD-R disc) writable by the optical pickup, and shows the result of the power calibration for optimizing the recording laser power. In an optical disc device that sequentially stores each optical disc in a memory unit in the device, when the optical disc is made unrecordable after data is recorded on the optical disc, the result of power calibration of the optical disc that is not additionally recorded is recorded in the memory. It is characterized by erasing from the copy.

CD-R which is a writable optical disc
The disc has a configuration (specification) in which after the data is recorded on the optical disc, if the optical disc is closed and additional recording is not possible, the disc cannot be written again. Therefore, after the additional recording is disabled, the recording is not performed again on the optical disc. That is, the execution result of power calibration of the optical disk stored in the main memory unit is not used thereafter. Therefore, in the present invention, by erasing the execution result of such unnecessary power calibration from the main memory unit, the main memory unit can be effectively used. In other words, the frequency of erasing the main memory portion when it is full is reduced, and the situation that necessary information (implementation result) is erased is reduced.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a system configuration diagram of an optical disk device of the present invention.

The output of the optical pickup 3 which writes the data on the optical disc 1 and reads the written data is supplied to the digital signal processing circuit 7 via the RF amplifier 5.
The output of the digital signal processing circuit 7 is connected to a laser driver 8 which controls the laser output when the optical pickup 3 writes and reads data. Further, the output of the servo processing circuit 9 is connected to a feed motor 4 for moving the optical pickup 3 in the radial direction of the optical disc 1 and a spindle motor 2 for rotationally driving the optical disc 1, and these digital signal processing circuits 7 are connected. The servo processing circuit 9 is bidirectionally connected to the system controller 10 that controls the entire apparatus.

The digital signal processing circuit 7 is bidirectionally connected with an SRAM 6 as a buffer for temporarily accumulating data actually read from the optical disc 1. The system controller 10 and the digital signal processing circuit 7 are bidirectionally connected with an interface controller (I / F controller) 13 for connecting to a host computer (not shown).

Further, the system controller 10 has a main memory unit (for example, an EEPROM or a flash ROM) 1 for storing the data of the optimum value of the recording laser power which is the result of the power calibration.
1 is connected to the main memory unit 11
To a sub-memory unit (for example, a flash ROM or the like) 12 for backing up and saving the execution result of the power calibration. Further, the system controller 10 includes a clock unit 14 for measuring the current time.
Is connected, and when recording data on the optical disc 1 based on the result of the power calibration stored in the main memory unit 11, the counting unit 15 that counts the number of times the recording speed actually used is used. In addition, the jumper wires of the jumper portion 16 provided on the back surface of the apparatus body (not shown) are connected.

The digital signal processing circuit 7 is used for EFM modulation and demodulation and for CIRC (Cross Interleaved Reed-Solom).
A 16-bit signal is divided into 8-bits and the 8-bits are converted into 14-bits in accordance with an error correction method based on on code).

The system controller 10 performs power calibration for optimizing the recording laser power before recording information on the loaded optical disc 1. Then, a process of storing the execution result (that is, the data of the optimum value of the recording laser power) in the main memory unit 11 together with the disc ID which is the unique code of the optical disc 1 is executed.

Further, the system controller 10 counts the recording speed actually used at the time of recording the actual data on the optical disc 1 after the power calibration, and the count value is counted by the main memory unit 11. The number of times of use recorded in a corresponding number-of-times-of-use recording area (which will be described later) of the execution result of the corresponding power calibration stored in is rewritten in such a manner as to be sequentially added.

Further, in the system controller 10, the execution result of the power calibration is the main memory unit 1
1 is fully stored, the main memory unit 11 and the sub memory unit 12 selected by the short-circuited state of the jumper wires of the jumper unit 16 when power calibration is performed on the newly loaded optical disc.
It is checked whether or not the execution result of the power calibration of the same optical disc as the loaded optical disc 1 is stored for both of the above, and if not, the power stored in the main memory unit 11 is stored. The oldest execution result among the calibration execution results is erased and saved in the sub memory unit 12, and at the time of saving in the sub memory unit 12, the usage recorded in the usage count recording area of the main memory unit is used. Based on the data of the number of times, among the execution results of the power calibration, only the execution results corresponding to one or more frequently used recording speeds are saved, and then the power calibration is performed on the loaded optical disk 1. The process is executed, and a process of newly storing the execution result in the main memory unit 11 after the deletion is executed.

That is, in this embodiment, the system controller 10 realizes the OPC control means described in the claims.

FIG. 2 is an explanatory diagram showing a data configuration example of the power calibration execution result (hereinafter, also referred to as OPC execution parameter) stored in the main memory unit 11.

The main memory unit 11 has 15 OPCs.
The execution parameters can be saved together with the unique disk ID, and each OPC execution parameter is further saved in a form corresponding to the access date and time. That is, the latest access date and time used for recording data on the optical disc 1 is always stored as the access date and time.

Also, one OPC execution parameter records the item of each recording speed which is the result of the power calibration, the item of the optimum recording laser power value at that recording speed, and the number of times of use of each recording speed. It consists of the item of the number of times of use. In the present embodiment, seven types of recording speeds such as 2 times, 4 times, 6 times, 8 times, 10 times, 12 times, and 16 times are exemplified, but the recording speed types are 7 kinds. It is not limited.

FIG. 3 shows a configuration example of jumper wires (jumper switches) provided in the jumper section 16.

The jumper section 16 is provided with three jumper switches. The jumper switch MS on the right side is connected to the master side, the jumper switch SL in the middle is connected to the slave side, and the jumper switch CS on the left side is connected to a special cable capable of automatically discriminating the connection. Normally, these jumper switches MS, SL, and CS are designed so that the systems corresponding to the jumper switches MS, SL, and CS are activated by vertical short-circuiting. However, in the present embodiment, the jumper switches MS, SL, and CS are short-circuited. By making the method different from the normal method, an instruction signal is output to the system controller 10, and the system controller 10 activates the processing programs of the main memory unit 11 and the sub memory unit 12 in accordance with the instruction signal. There is.

For example, the upper terminal MS1 of the jumper switch MS and the upper terminal SL of the jumper switch SL.
When 1 and 2 are short-circuited, a program for searching only the main memory section 11 is activated, and when the lower terminal MS2 of the jumper switch MS and the lower terminal SL2 of the jumper switch SL are short-circuited, only the sub-memory section 12 is searched. The short-circuiting between the terminal MS1 on the upper side of the jumper switch MS and the terminal SL2 on the lower side of the jumper switch SL (in FIG. 3, this state is indicated by black circles), the sub-memory unit 12 is started. Then, the program for searching the main memory unit 11 is started.

Incidentally, these jumper switches MS and S
When L and CS are not short-circuited by a method different from the above-mentioned method (that is, when nothing is done), the system controller 10 causes the main memory to carry out power calibration for the loaded optical disc 1. After the unit 11 is searched, the sub-memory unit 12 is searched for the presence or absence of the result of the power calibration.

Next, in the optical disc device having the above configuration, first, (1) a process of storing the OPC execution parameter in the main memory unit 11 and a process of updating the access date and time and the number of times of use corresponding to the stored OPC execution parameter. And (2) a process of saving the execution result of the power calibration from the main memory unit 11 to the sub memory unit 12, and finally (3)
A process of storing the OPC execution parameters in the main memory unit 11 when the loaded optical disc is a writable CD-R disc will be described. However, in FIG.
6B is an explanatory diagram showing how the data contents of the main memory unit 11 are updated, FIG. 5 is a flowchart showing a processing example 1 in the case of a CD-RW disc, and FIG. 6 is a diagram in the case of a CD-RW disc. 7 is a flowchart showing a processing example 2, FIG.
6 is a flowchart showing a processing example in the case of a CD-R disc.

(1) Processing of saving OPC execution parameters in the main memory unit 11, and update processing of access date and time and number of times of use corresponding to the saved OPC execution parameters

When power calibration is performed on the loaded optical disc 1, the power calibration execution result (OPC execution parameter) is stored as shown in FIG. 4A, for example. In this example, 2
At 3:30 pm on April 10, 002, the disk ID
The power calibration of the optical disk 1 of (AAA) is performed, and the OPC execution parameter as the execution result is stored. At this point, the number of times of use corresponding to each recording speed is 0.

After that, for example, when the same optical disk 1 is loaded at 10 am on April 12, 2002, and an operation button (not shown) is operated to set the recording mode, the system controller 10 causes the loaded optical disk 1 to be loaded. It is confirmed whether or not the same disk ID as the disk ID (AAAA) of No. is stored in the main memory unit 11. In this case, since the same disc ID is stored, the subsequent recording operation is started using the OPC execution parameter corresponding to this disc ID (AAA). At this time, the system controller 10 determines that the disk ID (AA
The access date and time data of AA) is set to “02/04/10
15:30 "to" 02/04/12 10: 0 "
Rewrite to "0".

During this recording operation, the system controller 10 counts the recording speed actually used by the counting unit 1.
5 is counted, and the count value is counted by the main memory unit 1
The number of times of use recorded in the corresponding number-of-times-of-use recording area of the corresponding OPC execution parameter stored in 1 is sequentially rewritten in such a form.

For example, when 12 × speed is used as the recording speed, the counting section 15 counts the number of times 12 of 12 × speed use. As a result, the system controller 10 rewrites the numerical value of the number-of-uses recording area corresponding to 12 × speed from 0 at the beginning.

After the optical disc 1 is once ejected, the same optical disc 1 is loaded again at 10 am on April 14, 2002, and the recording operation is started. (AA
The access date and time data of AA) is set to “02/04/12
From "10:00" to "02/04/14 10:00"
Rewrite to "0".

After the recording operation is started, the same 12
When the double speed is used, the counting section 15 counts the number of times of use 12 at the double speed. As a result, the system controller 10 rewrites the numerical value of the number-of-uses recording area corresponding to 12x speed from 1 to 2.

After the optical disc 1 is once ejected, when the same optical disc 1 is re-loaded and the recording operation is started, for example, at 10 am on April 15, 2002, the system controller 10 discriminates the disc ID. (AA
The access date and time data of AA) is set to “02/04/14
From "10:00" to "02/04/15 10:00"
Rewrite to "0".

Then, after the recording operation is started, this time 10
When the double speed is used, the counting unit 15 counts the number of times of use 10 at the 10x speed. As a result, the system controller 10 rewrites the value of the number-of-uses recording area corresponding to 10 × speed from 0 to 1. FIG. 4B shows the storage state of the OPC execution parameters in the main memory unit 11 at this time.

As described above, every time the optical disc 1 is ejected, reloaded and the recording operation is performed, the item of access date and time and the item of number of times of use of the corresponding disc ID in the main memory unit 11 are as described above. It will be updated and recorded at any time.

(2) Processing for saving the result of power calibration from the main memory unit 11 to the sub memory unit 12

However, here, the jumper switch M
A case where S, SL, and CS are not short-circuited by a method different from usual (that is, a case where both the main memory unit 11 and the sub memory unit 12 are searched) will be described.

[Processing Example 1] Arbitrary optical disc (CD-R
W disc 1 is loaded, and an operation button (not shown) is operated to set the recording mode, the system controller 10 disc ID of the loaded optical disc.
The same disk ID as (XXXX) has the same main memory unit 11
It is confirmed whether or not it is stored in (step S1).
As a result, if the same disc ID is stored (Yes in step S1), the subsequent recording operation is started using the OPC execution parameter corresponding to the disc ID (step S2). . The processing at this time is as described in (1) above.

On the other hand, if the same disk ID is not stored in the main memory unit 11 (No in step S1), the sub memory unit 12 is searched next.
It is confirmed whether or not the OPC execution parameter having the same disk ID is stored in the sub memory unit 12 (step S
3). As a result, if the same disc ID is stored (Yes in step S3), the subsequent recording operation is started using the OPC execution parameter corresponding to the disc ID (step S2). . However, since the OPC execution parameter at this time is saved for backup, the above process (1) is not performed.

On the other hand, the same disk ID is assigned to the sub memory unit 1
If it is not stored in No. 2 (if No is determined in step S3), the system controller 10 performs power calibration on the loaded optical disc 1, and the result of the power calibration (OPC Get execution parameters) (step S)
4).

At this time, the system controller 10
It is confirmed whether or not the area for storing the execution result of the power calibration performed this time exists in the main memory unit 11 (step S5). That is, the main memory unit 11
Since a maximum of 15 OPC execution parameters can be stored in, a check is made as to whether or not the maximum 15 OPC execution parameters have been stored.

As a result, if there is a free space in the area (if Yes is determined in step S5), the current OPC execution parameter is stored in the free area (step S).
6).

On the other hand, if there is no free area in the main memory unit 11 (No in step S5), the oldest OPC execution parameter among the OPC execution parameters stored in the main memory unit 11 is displayed. Are saved in the sub memory unit 12 (step S7).

That is, the system controller 10
The item of access date and time in the main memory unit 11 is searched, and the OPC execution parameter with the oldest date and time is set to the sub memory unit 12.
Evacuate to. For example, in the example shown in FIG. 2, among the 15 OPC execution parameters, the disk ID (BBB
The access date and time of the OPC execution parameter of B) is “02 /
01/15 10:30 ”, the OPC execution parameter of this disk ID (BBBB) is saved in the sub memory unit 12.

At this time, as the OPC execution parameters to be saved, not all of the data are saved, but the OPC execution parameters are based on the usage count data recorded in the usage count recording area of the main memory unit 11. Among these, only the OPC execution parameters corresponding to one or more (up to three in the present embodiment) recording speed with high usage frequency are saved. In the example shown in FIG. 2,
12 times 8 times, 10 times 6 times, 8 times 4 times, 16
Since the double speed is twice and the sixth speed is once, only the OPC execution parameters of 12x speed, 10x speed and 8x speed are saved in the sub memory unit 12.

After that, the system controller 10 reads the OP of the disk ID (BBBB) from the main memory unit 11.
The C execution parameter is deleted (step S8), and the OPC execution parameter of this time acquired in step S4 is set to
The erased area is saved (step S9).

[Processing Example 2] In Processing Example 1 above, when power calibration of a new optical disk 1 is performed in a state where the OPC execution parameters are fully stored in the main memory section 11, the main memory section 11 is processed.
The process of saving the oldest OPC execution parameter of the main memory unit 11 in the sub memory unit 12 has been described. However, in the present processing example 2, even if the OPC execution parameter is not fully stored in the main memory unit 11, OP of
A case where the C execution parameter is saved in the sub memory unit 12 will be described with reference to the flowchart shown in FIG.

When the recording operation of the loaded optical disk 1 is being performed using any OPC execution parameter stored in the main memory section 11, the operation of closing the optical disk 1 is performed when the recording is completed. If (Yes in step S11), the system controller 10 searches the main memory unit 11 and the OPC execution parameter of the disc ID that matches the disc ID of the closed optical disc 1 is stored. The area where there is is found (step S12). Here, the closing operation is specifically a lead-in (L-
in) and lead-out (L-out) are written.

Then, the OPC execution parameter of the matching disk ID is saved in the sub memory unit 12 (step S13). At this time, as the OPC execution parameter to be saved, not all the data is saved, but the OPC execution parameter is set based on the data of the number of times of use recorded in the number-of-uses recording area of the main memory unit 11. Only the OPC execution parameters corresponding to one or more frequently used (up to three in the present embodiment) recording speeds are saved. This is the same as the above-mentioned processing example 1.

Thereafter, the system controller 10 erases the OPC execution parameter of the disc ID of the closed optical disc 1 from the main memory unit 11 (step S).
14).

As described above, in the above-mentioned processing example 2, regardless of whether or not the OPC execution parameters are fully stored in the main memory unit 11, the O of the closed optical disk 1 is saved.
The PC execution parameters are saved in the sub memory unit 12. As a result, the main memory unit 11 can be effectively used according to the usage status of the user. However, in a CD-RW disc, it is possible to erase the recorded data and re-record it. Therefore, in such a case, the OPC execution parameter stored in the sub memory unit 12 is used. Become.

In each of the processing examples 1 and 2 described above, the jumper switches MS, SL and CS are not short-circuited by a method different from the usual method. For example, the already closed optical disk 1 is loaded. When erasing data and attempting to record again, the user
It is possible to recognize that the OPC execution parameter of the optical disc 1 has already been saved in the sub memory unit 12.

Therefore, in such a case, the user
The lower terminal MS2 of the jumper switch MS and the lower terminal SL2 of the jumper switch SL are short-circuited.
As a result, the system controller 10 recognizes such a short-circuited state of the jumper switch, and during the recording operation of the loaded optical disc 1, only the sub-memory unit 12 is searched to acquire the OPC execution parameter, and recording is started. be able to. That is, it is possible to save the trouble of searching the main memory unit 11 and then searching the sub memory unit 12, and to shift to the recording operation more quickly.

(3) Processing for saving OPC execution parameters in the main memory unit 11 when the loaded optical disk is a writable CD-R disk

CD-R which is a writable optical disc
In the case of the disc, if the optical disc is closed after the recording of the data on the optical disc to make the additional recording impossible, the disc cannot be written again. Therefore, after the additional recording is disabled, the recording is not performed again on the optical disc. That is, the OPC execution parameter of the optical disk stored in the main memory unit 11 is not used thereafter.

Therefore, the unnecessary OPC execution parameters are deleted from the main memory unit 11 to effectively use the main memory unit 11.

That is, in the state where the recording operation of the loaded optical disc 1 is performed using the arbitrary OPC execution parameter stored in the main memory unit 11,
When the optical disc 1 is closed and additional recording is disabled when the recording is completed (when it is determined Yes in step S21)
The system controller 10 includes a main memory unit 11
Is searched for an area in which the OPC execution parameter of the disc ID that matches the disc ID of the closed optical disc 1 is stored (step S22).

Then, the OPC execution parameter of the matching disk ID is erased from the main memory unit 11 (step S23). As a result, the frequency with which the main memory unit 11 is full and erased decreases, and the situation in which necessary information (OPC execution parameters) is erased also decreases.

The optical disk device shown in FIG.
In the case of a drive dedicated to the R disk, the sub memory unit 12, the clock unit 14, and the counting unit 15 are unnecessary. Further, it is not necessary for the system controller 10 to judge the short-circuited state of the jumper section 16.

In the above embodiment, the disk ID
Is described as an ID code unique to the disc,
It is not limited to this. The disk ID may be, for example, the manufacturer code of the manufacturer, or may be the one product number code of one manufacturer. When the disc ID is used as the product number code, optical discs having the same product number are treated as the same disc ID and the above processes are executed. in short,
Whether or not the disk ID is set for each manufacturer, each product number for each manufacturer, or each individual disk may be determined at the device design stage.

The optical disk device of the present invention is a CD-R.
In the case of the / RW drive, when the optical disc 1 is loaded, the ATIP information is read to determine whether the loaded optical disc 1 is a CD-R disc or a CD-R disc.
Since it can be determined whether or not it is an RW disc, it is only necessary to distinguish the processing of (1) and (2) from the processing of (3) based on the determination result.

[0082]

According to the optical disk device of the present invention, even when an optical disk whose power calibration result has been erased from the main memory section is reloaded, the power calibration result of this optical disk is stored in the sub memory section. Since the power calibration execution result stored in the sub-memory section is used to record (write) data on the optical disk without performing power calibration again on the loaded optical disk. It can be carried out.

According to the optical disk device of the present invention,
When the optical disc is closed after recording the data on the optical disc, the execution result of the power calibration of the closed optical disc is erased from the main memory part and saved in the sub memory part, so that the main memory part can be effectively used. Becomes In addition, since the execution result of the power calibration erased from the main memory portion remains in the sub memory portion, even if the erased optical disk is loaded after that, the power calibration remaining in the sub memory portion The recording can be started by using the execution result.

According to the optical disk device of the present invention,
Use a memory with a small storage capacity as a sub-memory unit by saving only the execution results corresponding to one or more frequently used recording speeds instead of saving all the execution results of the power calibration. You can Even when a memory with a small storage capacity is used, a sufficient number of execution results can be stored.

According to the optical disk device of the present invention,
In the usage count recording area, when the actual data is subsequently recorded on the optical disc, the usage count of the recording speed actually used is updated and recorded, so that the latest usage count always remains. Therefore, when saving to the sub-memory unit, based on the latest usage number data recorded in the usage number recording area of the main memory unit, one or a plurality of frequently used frequencies in the power calibration execution result are obtained. It is possible to reliably select the recording speed and save only the selected execution result in the sub memory unit. That is, it is possible to leave only the minimum execution result necessary for the subsequent recording of the optical disc in the sub memory unit. Therefore, a memory having a small storage capacity can be used as the sub memory unit. Even when a memory with a small storage capacity is used, a sufficient number of execution results can be stored.

According to the optical disk device of the present invention,
It is known that the loaded optical disk has already been erased from the main memory part, for example, because the user can select whether to use the main memory part or the sub memory part depending on the shorting method of the jumper wire. In this case, the jumper wire may be short-circuited in advance so that only the sub memory unit is used. As a result, it is possible to find the execution result of the power calibration of the loaded optical disk by searching only the sub memory section without searching the main memory section.

According to the optical disk device of the present invention,
If the optical disc is a CD-R disc and the optical disc is closed after writing of data on the optical disc to prevent additional recording, by deleting the unnecessary power calibration result from the main memory, The memory section can be effectively used. In other words, it is possible to reduce the frequency of erasing the main memory unit when it is full and erasing necessary information (implementation result).

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of an optical disk device of the present invention.

FIG. 2 is an explanatory diagram showing a data configuration example of a power calibration execution result (OPC execution parameter) stored in a main memory unit.

FIG. 3 is an explanatory diagram showing a configuration example of a jumper wire (jumper switch) provided in a jumper section.

4 (a) and 4 (b) are explanatory diagrams showing how the data content of the main memory unit is updated.

FIG. 5 is a flowchart showing an operation example 1 in the case of a CD-RW disc.

FIG. 6 is a flowchart showing an operation example 2 in the case of a CD-RW disc.

FIG. 7 is a flowchart showing an operation example 3 in the case of a CD-R disc.

FIG. 8 is an explanatory diagram showing a data recording layout of an optical disc.

[Explanation of symbols]

1 optical disk 2 spindle motor 3 optical pickup 4 feed motor 5 RF amplifier 6 SRAM 7 digital signal processing circuit 8 laser driver 9 servo processing circuit 10 system controller 11 main memory section (EEPROM) 12 sub memory section (flash ROM) 13 interface controller ( I / F controller) 14 Clock section 15 Count section 16 Jumper section ● (Tape listening) On the back, three jumper switches are originally arranged vertically, and the most one is drive 1
The second one, when it is connected to the master side, and the middle is connected to the slave side. So, on the left, depending on the cable, if you use a special cable, you can judge which side the cable is connected to arbitrarily. If it is a cable,
If you short it, it will decide which one you want. Originally, use one vertically. This time, you can set the backup data to be used by shorting the jumper on the black circle only. ●

Claims (9)

[Claims] 1. When data is recorded on a rewritable optical disk by an optical pickup, a power calibration is performed to optimize the recording laser power, and the result of the power calibration is sequentially stored in a main memory section in the apparatus. In an optical disc device having an OPC control unit for storing, a sub-memory unit for storing the power calibration execution result, and a jumper serving as a selection unit for selecting one or both of the main memory unit and the sub-memory unit. A line, and a count unit that counts the number of times of the recording speed actually used when recording data on the optical disc based on the result of the power calibration stored in the main memory unit, The main memory section shows the result of power calibration. A use count recording area for recording the number of uses of each recording speed is provided corresponding to the optimum recording laser power value of the recording speed, and when the actual data is recorded on the optical disk after the power calibration is performed, the OPC When recording the data on the optical disc, the control unit counts the recording speed actually used by the count unit, and the count value corresponds to the execution result of the corresponding power calibration stored in the main memory unit. While performing the process of rewriting by sequentially adding to the number of times of use recorded in the number of times of use recording area, while the result of power calibration is fully stored in the main memory section, When performing power calibration on the loaded optical disk, the OPC control means Whether or not the execution result of the power calibration of the same optical disk as the loaded optical disk is stored in both the main memory section and the sub memory section selected by the short-circuited state of the jumper wire which is the selection means. If not confirmed, the oldest execution result of the power calibration results saved in the main memory unit is deleted and saved in the sub memory unit, and When saving the data to the main memory unit, based on the data of the number of times of use recorded in the number-of-times-of-use recording area of the main memory unit, an operation corresponding to one or more recording speeds which are frequently used in the execution result of the power calibration. After evacuating only the results, power calibration is performed on the loaded optical disc. Optical disc apparatus characterized by newly stored in the main memory portion after erasing the implementation result. 2. A power calibration for optimizing a recording laser power is performed when data is recorded on a rewritable optical disc by an optical pickup, and a result of the power calibration is sequentially stored in a main memory unit in the apparatus. In an optical disc apparatus having an OPC control means for storing, a sub memory unit for storing the execution result of the power calibration is provided, and the execution result of the power calibration is fully stored in the main memory unit. When recording data on a newly loaded optical disc, the OPC control unit determines whether or not the result of power calibration of the same optical disc as the loaded optical disc is stored in the main memory unit and the sub memory unit. Check if it is not saved. The oldest execution result among the power calibration results stored in the memory section is erased and saved in the sub-memory section, and power calibration is performed on the loaded optical disk. An optical disk device, which is newly stored in the main memory unit after erasing. 3. A power calibration for optimizing a recording laser power is carried out when data is recorded on a rewritable optical disk by an optical pickup, and the result of the power calibration is sequentially stored in a main memory section in the apparatus. An optical disc apparatus including an OPC control unit for storing the sub-memory unit for storing the execution result of the power calibration, wherein the OPC control unit closes the optical disc after recording data on the optical disc. An optical disk device, wherein the execution result of power calibration of a closed optical disk is erased from the main memory unit and saved in the sub memory unit. 4. The OPC control means saves only the execution result corresponding to one or a plurality of frequently used recording speeds among the execution results of the power calibration when saving to the sub-memory unit. The optical disk device according to claim 2 or 3, which is characterized in that. 5. The main memory unit is provided with a use count recording area for recording the use count of each recording speed in association with the optimum recording laser power value of each recording speed as a result of power calibration. In addition, when recording the data on the optical disc based on the result of the power calibration stored in the main memory unit, it further comprises a counting unit for counting the number of times of use of the recording speed actually used, When recording data on the optical disc, the OPC control unit counts the recording speed actually used by the count unit, and the count value is the result of performing the corresponding power calibration stored in the main memory unit. Rewriting by adding to the number of times of use recorded in the corresponding number of times of use recording area The optical disk apparatus according to claim 2 or claim 3, characterized in Kukoto. 6. The OPC control means, when saving to the sub memory unit, based on the number-of-uses data recorded in the number-of-uses recording area of the main memory unit,
The optical disc apparatus according to claim 5, wherein only the execution result corresponding to one or a plurality of frequently used recording speeds is saved among the execution results of the power calibration. 7. The apparatus further comprises selection means for selecting one or both of the main memory section and the sub-memory section, wherein the OPC control section is configured to perform power calibration on the loaded optical disc, A search is performed as to whether or not the result of power calibration of the same optical disc as the loaded optical disc is stored in either or both of the main memory unit and the sub memory unit selected by the selecting unit. The optical disk device according to any one of claims 2 to 6, which is performed. 8. The optical disk device according to claim 6, wherein the selecting means is a jumper wire provided on the main body of the device. 9. Data is recorded on a writable optical disc by an optical pickup, and the result of power calibration for optimizing the recording laser power is sequentially stored in a memory unit in the apparatus for each optical disc. In the optical disc device, when the optical disc is write-protected after the data is recorded on the optical disc, the result of power calibration of the write-disabled optical disc is erased from the memory unit.