JP2004288331A - Information recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the reliability by making data recording and reproduction always possible without fail on an information recording medium. <P>SOLUTION: When an optical disk 1 which serves as the information recording medium is inserted, a control unit having a CPU controller 11 as the main component judges whether the optical disk 1 needs defect detection depending on whether defect detection (verification) of the optical disk 1 has been finished and, if the verification has not been finished, the whole surface of the optical disk 1 is formatted and verified. If verified, it is decided whether the verification has been performed by the usually used information recording and reproducing device (a usually used drive) and, when it is performed by a drive other than the usually used drive, it is decided that the defect detection is necessary again and the whole surface of the optical disk 1 is automatically verified. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an information recording / reproducing apparatus having a function of detecting a defect of an information recording medium such as an optical disk or a magneto-optical disk, managing the defect, and replacing the defect.
[0002]
[Prior art]
There are information recording media such as recordable CDs (Compact Disks) and DVDs (Digital Versatile Disks) as optical disks and magneto-optical disks capable of recording a large amount of information. CD-Rs (CD-Recordables) and CD-RWs (CDs) There are various standards such as -Rewritable, DVD + RW (DVD + Rewritable), and DVD + R (DVD + Recordable).
[0003]
In these information recording media, it is currently unavoidable that a defect occurs in the recording area due to use at the time of manufacture or subsequent use, so that all recording areas cannot be used for recording and reproducing information.
Therefore, conventionally, a recording area on an information recording medium is divided into areas (sectors) of an appropriate length, and information recording / reproducing (verification) is performed in units of the sector. In addition, a process of recording and reproducing information, that is, a so-called replacement process, is performed using a region having no defect as a replacement region.
[0004]
A standard to which a defect management function is added is the Mount Rainier (Mt. Rainier) standard. The Mount Rainier standard is applied to rewritable CD-RW and DVD + RW, and is referred to as CD-MRW and DVD + MRW, respectively.
A feature of the Mount Rainier standard is a defect management function for managing defect information including a defect area and its replacement area. Thus, when data is recorded on an optical disk conforming to the Mount Rainier standard, if a defective area is included in the recording area of the data, the data is automatically recorded in the corresponding replacement area.
[0005]
The Mount Rainier standard is compatible with conventional recording format standards such as CD-RW and DVD + RW. This is because a defect management area and a replacement area are arranged in a user data area of a CD-RW or DVD + RW format, so that an information recording / reproducing apparatus (hereinafter, also referred to as a “drive”) that only supports the conventional format can access. It becomes possible.
[0006]
The defect management area in the CD-MRW and DVD + MR formats is arranged as a main table area (Main Table Area, hereinafter abbreviated as “MTA”) in an area in the lead-in area in the conventional CD-RW and DVD + RW formats. In addition, it is also arranged as a secondary table area (hereinafter, abbreviated as “STA”) in the user data area. The replacement area is arranged as a spare area (Spare Area, hereinafter abbreviated as “SA”) in the user data area.
[0007]
By arranging the defect management area and the replacement area in the user data area in this way, a disk of the Mount Rainier standard is inserted into a drive that does not support the Mount Rainier standard (hereinafter, simply referred to as an “unsupported drive”). Even in such a case, since the drive is not compatible with the conventional format, the unsupported drive can be recognized as a disk of the conventional format. Since the defect management area and the replacement area are arranged in the user data area, using a specific device driver (hereinafter abbreviated as “MRW driver”) makes it possible to access even an unsupported drive and to perform replacement. A replacement sector existing in the area can be accessed.
[0008]
Also, when a disk is inserted, the MRW driver reads a specific area on the disk and determines whether the disk is a Mount Rainier standard disk (referred to as an MRW disk). If it is determined that the disc is an MRW disc, the management information is read from the defect management area, and information on the sector where the defect has been replaced is obtained.
As a result, when a read request is issued from the unsupported drive to the area including the sector where the defect has been replaced, the replacement destination area is read from the management information obtained earlier, so that the drive can be used even on the unsupported drive. It becomes possible. Of course, a drive that complies with the Mount Rainier standard can read the replacement area without such an MRW driver.
[0009]
Next, the defect management function, which is a feature of the Mount Rainier standard, will be described using DVD + MRW as an example. First, the defect detection to be performed first is basically to be performed on the entire surface of the disk after the entire surface is formatted. However, since the DVD + RW employs the background format, the entire surface of the disk can be accessed immediately after the initialization is completed. become. Therefore, when a recording request is received for an unrecorded area that has been formatted, a defect can also be detected by performing data recording processing and then verifying the recording area.
[0010]
When a defect is detected, the defect management information is recorded in the MTA in the lead-in area and the STA in the area before the lead-out area shown in FIG. The area where the defect exists is replaced with a spare area (SA1) on the innermost circumference and a spare area (SA2) on the outermost circumference of the user data area.
When erasing recorded data, an application generally overwrites only a portion necessary for erasing data and reuses it in many cases. Therefore, it is rare that the disk once formatted is reformatted once and the defect detection and replacement processing are newly performed.
[0011]
Here, the verifying is to detect a defective sector existing in the user area on the disk, and the defective sector is replaced by the innermost SA1 or the outermost SA2 of the user data area which is a replacement area. The replacement process (replacement means) records the information in the MTA and the STA which are defect management areas.
As described above, this verification includes a method of performing the verification on the entire surface of the disk after the formatting is completed, and a method of performing the verification after performing the recording process on the formatted unrecorded area.
By performing the verification in this way, a defective sector existing on the disk is detected in advance, and the reliability of the data recording process can be improved by reliably performing the process of replacing the defective sector. 1).
[0012]
[Patent Document 1]
JP-A-7-176142
[0013]
[Problems to be solved by the invention]
However, in the conventional information recording / reproducing apparatus, verification is not performed on a disk whose entire surface has been once formatted to the DVD + MRW format unless a defect detection request is received again.
For this reason, such a disk is formatted and verified by a drive of another company (other company's machine), not by the same company's own drive (the company's machine) as the drive (information recording / reproducing device) that uses it. In some cases, the defect detection criteria and data read performance may be different from those of the company's own machine, so even if the other company's machine does not judge it as a defect, the company's machine may not be able to record or read data There was a problem.
[0014]
Even if the disk to be verified has been verified by the in-house device, the disk format and verification have been performed on the drive that uses the disk (called its own device), or another drive (called another device). ) May not be determined. However, the recording and reading performance of each drive may vary among the own devices, and there is a problem that the data cannot be recorded and read even if the verification is performed by the own device.
[0015]
To explain this problem in more detail, FIG. 9 shows a case where a conventional drive uses an MRW-formatted disk other than its own.
Conventionally, verification performed on an MRW-formatted disk is intended to detect a congenital defect on the disk as described above, and an area that has been verified once will not be verified again. I have.
[0016]
However, as shown in FIG. 9, the verification has been completed to at least half of the user data area by another device, and a defect area (Defect Area, hereinafter referred to as “Defective Area”, which can be read and written by another device but cannot be read and written by itself). DA "). In this state, when a recording request comes after a last verified address (hereinafter, abbreviated as “LVA”), recording is performed in that area and verification is performed (Write & Verify). Verify is not performed even if a recording request comes to the area. Therefore, when using this disc, a defect cannot be detected unless verification is performed again, and when a read / write request is made for a defective area, recording or reading fails. I was
[0017]
By the way, in a conventional DVD + MRW drive, normal verification is performed after performing full-format, but when a disk is to be removed in the middle of the process, a main information packet (Main information Packet) in the MTA shown in FIG. , A "MIP" and a secondary information packet (hereinafter abbreviated as "SIP") to record information such as the state of the disc and how far it has been recorded.
The disk status is recorded, for example, in the verification status in bit 4 of the disk status in byte 24 of the MIP and SIP, and the extent to which the defect detection and replacement processing has been performed is determined by the LVA in bytes 28 to 30. And the information is updated when the disc is ejected.
[0018]
However, if the verification is performed again and the disk is ejected halfway, it is unknown how far the verification has been performed. It will not be done.
Also, since information such as LVA is not recorded on the disc taken out during the defect detection, it is unknown how far the verification has been performed. Therefore, even if the disc is inserted into the information recording / reproducing apparatus again, The verification must be newly performed again on the entire surface of the disk without performing the verification. If this state is maintained, information such as the drive ID will not be updated.
If the disc has been formatted and verified by another company's machine, the information such as the drive ID will not be updated because the defect detection criteria and data reading performance may differ from those of the company's machine. However, there is a problem that verification is performed every time.
[0019]
The present invention has been made in order to solve such a problem, and even if a disc as an information recording medium is formatted and verified by another drive of another company's machine or another drive of the company's own machine, the present invention does not intend to solve the problem. It is an object of the present invention to perform necessary defect detection, and to perform appropriate defect detection even when a disk is taken out during the defect detection and the disk is inserted again.
[0020]
[Means for Solving the Problems]
An information recording / reproducing apparatus according to the present invention includes: an information recording unit that records on an information recording medium having a user data area accessible from a user and a replacement area for replacing a defect in the user data area; First determining means for determining whether or not the defect detection in the user data area is necessary; and detecting the defect in the user data area when the first determining means determines that the defect detection is necessary. And first defect detecting means.
Further, in order to achieve the above object, a second determining means for determining again whether or not a defect detection is necessary for the user data area determined to be unnecessary by the first determining means; And a second defect detecting means for detecting a defect in the user data area again when it is determined by the second determining means that the defect detection is necessary.
[0021]
The first judging means is means for judging the necessity of defect detection by judging whether the user data area has been verified, and the first defect detecting means and the second defect detecting means are Any of these may be means for verifying the inside of the user data area.
Further, the first determining means includes a main information packet (MIP) in the main table area of the information recording medium formatted according to the Mount Rainier standard and a secondary information packet (SIP) in the secondary table area. May be a means for determining whether or not the data has been verified, based on the value of the last verified address (LVA) existing in at least one of the above.
[0022]
Further, the second determination means may detect whether a defect in the user data area of the inserted information recording medium has been detected by an in-house device which is an in-house information recording / reproducing device, or by an in-house information recording / reproducing device. It is preferable to use a self-other company machine determination means for determining whether the process is performed by a certain other company machine.
It is preferable that the self-competition device determination means is a means for making the determination based on the drive ID described in the format of formatting disc control block (FDCB) of the information recording medium formatted according to the DVD + MRW standard.
Alternatively, the own device determination means may be a means for making the determination based on a recorder ID code recorded on an information recording medium formatted according to the CD-MRW standard.
[0023]
Further, the second determining means may detect whether a defect in the user data area of the inserted information recording medium has been detected by the information recording / reproducing apparatus itself, or may be a different information recording / reproducing apparatus. It may be a self-other machine determining means for determining whether the process is performed by the machine.
The self-other device judgment means can be a means for making the above judgment based on the drive ID described in the format of formatting disc control block (FDCB) of the information recording medium formatted according to the DVD + MRW standard.
Alternatively, the own / other device determining means may be a means for making the above determination based on a recorder ID code recorded on an information recording medium formatted according to the CD-MRW standard.
[0024]
In these information recording / reproducing apparatuses, the second defect detecting means may be means for detecting a defect in the user data area on the recording area after data recording requested by the user.
Alternatively, the second defect detection means may be means for automatically detecting a defect in the user data area.
Further, the second defect detecting means may be a means for detecting a defect on the entire surface of the information recording medium.
Further, the second defect detection means may be a means for detecting a defect on the entire surface of the information recording medium in the background when there is no access from a user.
[0025]
When the second defect detection means detects a defect in the user data area, if the information recording medium is a disk formatted in conformity with the DVD + MRW standard, the last verification recorded on the disk is performed. The address (LVA) and the drive ID described in the format of formatting disc control block (FDCB) are updated, and if the information recording medium is a disc that has been formatted according to the CD-MRW standard, it is recorded on the disc. It is preferable to have a means for updating the last verified address (LVA) and the recorder ID code.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of an optical disk recording / reproducing apparatus which is an embodiment of the information recording / reproducing apparatus according to the present invention.
This optical disk recording / reproducing device is a DVD + MRW drive device for reproducing information (data) recorded on an optical disk such as a DVD + MRW and recording data on an optical disk, and corresponds to an information recording / reproducing device.
This optical disk recording / reproducing apparatus is connected to a host computer 9 which receives data recording and reproduction instructions, and records or reproduces information (data) on an optical disk 1 such as a DVD + MRW, which is an information recording medium, based on the instructions. I do.
The spindle motor 2 rotates the optical disc 1 when mounting the optical disc 1 and recording or reproducing data. The rotation control system 3 controls the rotation of the motor 2.
[0027]
The optical pickup 4 can perform a micro operation, and reads data recorded on a recording surface and records data by irradiating the optical disc 1 with light generated by a light source such as a laser.
The optical pickup control system 5 controls the light emission of the optical pickup 4 and the like.
The coarse motor 6 is a motor that moves the optical pickup 4 in the radial direction of the optical disc 1. The coarse movement motor control system section 7 controls the rotation of the coarse movement motor 6.
The signal processing system unit 8 performs processing of signals from the optical pickup 4 and transmission / reception of data for recording data on the optical disc 1 and data reproduced from the optical disc 1. These constitute an information recording unit and an information reproducing unit.
[0028]
The host computer 9 is a device such as a personal computer that communicates via an external interface 10 of the optical disk recording / reproducing device.
The CPU controller 11 is realized by a microcomputer and controls the entire optical disk recording / reproducing apparatus, and also functions as various units according to the present invention. The CPU controller 11 includes a small amount of memory such as a register, and also performs data input / output control of the nonvolatile memory 12 and the buffer memory 13 and various signal processing.
[0029]
The non-volatile memory 12 is a memory that retains various settings even when the power is turned off, in which a control program for operating the CPU controller 11 and data to be stored for a long time are stored in advance. Is a memory for storing information such as a head address and a final address of a predetermined position on the optical disk 1 and a laser power at the time of recording in association with a disk ID (corresponding to medium identification information) or a volume name of the optical disk 1 according to the present invention.
[0030]
The buffer memory 13 is a memory in which the CPU controller 11 temporarily stores and reproduces data reproduced from the optical disc 1 and data to be recorded on the optical disc 1.
The optical disk recording / reproducing apparatus stores data read from the optical disk 1 in a buffer memory 13 and transfers the data in the buffer memory 13 to a host computer 9 via an external interface 10 under the control of a CPU controller 11.
[0031]
4A and 4B show the configuration of the format of the optical disk. FIG. 4A shows the configuration of the CD-MRW format, and FIG. 4B shows the configuration of the DVD + MRW format.
Both have areas called a lead-in area and a lead-out area, and have a user-recordable area in the data zone area in DVD + MRW and in the program area in CD-MRW.
In the lead-in area, there is an area called MTA. In the data zone area of DVD + MRW (program area in CD-MRW), GAA (General Application Area), SA {Spare Area}, data area, DA (Data Area) ) And STA (Spare Table Area).
[0032]
The MTA and the STA record defect management information and information such as the state of the disk. The contents of the STA are copies of the contents of the MTA, and are the same as the contents of the MTA. The GAA records information for enabling a drive that does not support the MRW disk, which is a disk of the Mount Rainier standard, to use the MRW disk using the MRW driver. SA is a replacement area. When a defect is detected in the DA area where user data is recorded, the defect area is replaced with this SA, and the information is recorded in the MTA and the STA. This is replacement means.
The difference between the CD-MRW and the DVD + MRW is that, in the CD-MRW, DA and SA are alternately distributed over the entire surface of the disk as shown in FIG. 4A, whereas in the DVD + MRW, FIG. As shown in (1), SA1 is located at the innermost periphery of the user data area, and SA2 is also located at the outermost periphery.
[0033]
Next, FIG. 5 shows a configuration of MIP (main information packet) / SIP (secondary information packet) of DVD + MRW, and FIG. 6 shows a configuration of MIP (main information packet) / SIP (secondary information packet) of CD-MRW. ing.
In both disks, the last verify address LVA exists in the block 28, and the CPU controller 11 shown in FIG. 1 determines whether or not the verification has been completed from the value of this LVA. For example, if the LVA value has not reached the last user data area, it is determined that the verification has not yet been completed, and if the LVA value has reached the last user data area, it is determined that the verification has been completed. be able to. This is the function as the first determination means.
[0034]
Next, a method of identifying and determining the own drive and the drive of another company or the own drive and the other drive in the own drive will be described with reference to FIGS. 7 and 8.
First, FIG. 7 is a diagram showing a configuration of a recorder ID code of the CD-MRW. According to the structure of the recorder ID code, in the user data bytes 8 to 10 shown in FIG. 7, the manufacturer code such as "RIC" is recorded in the manufacturer code of the recorder ID.
[0035]
Subsequently, in the user data bytes 16 to 19, a model such as “MH08” is recorded in the recorder type code of the recorder ID, and in the user data bytes 24 to 26, the recorder ID of the recorder ID is recorded. A number such as "123" is recorded in the unique number. In the user data bytes 32 to 63, a manufacturer name or the like is recorded as a manufacturer name.
As a result, it is possible to identify and determine the own device and another company's device, or the own drive and the other drive in the own device drive, based on the recorder ID code of the CD-MRW.
[0036]
Next, FIG. 8 is a diagram showing a configuration of a format of formatting disc control block (FDCB) of DVD + MRW. Although the FDCB does not have a manufacture code or the like that is the same as the CD-MRW recorder ID code, the same content as the CD-MRW recorder ID code is defined in the drive ID in the FDCB as follows. Is and exists.
[0037]
In other words, the drive ID is defined in the main data byte positions D8 to D39 in the FDCB of the DVD + MRW. In the defined byte positions D8 to D23, the drive manufacturer records, for example, "ABCKK". Is done. In the byte positions D24 to D35, the model name of the drive is recorded as, for example, "DVD + RW MP5125". In the byte positions D36 to D39, the drive-specific serial number is, for example, "1234". Is recorded.
As a result, the drive ID in the FDCB of the DVD + MRW can identify and determine the own device and another company's device, or the own drive and the other drive in the own device drive.
These correspond to the function of the second determination unit that determines again whether or not the defect detection is necessary for the user data area of the information recording medium for which the first determination unit does not need the defect detection.
[0038]
Next, a control operation according to the present invention centering on the CPU controller 11 of the optical disk recording / reproducing apparatus shown in FIG. 1 will be described.
2 and 3 are flowcharts showing an example of the operation, and each step is abbreviated as “S”.
[0039]
[First operation example: FIG. 2]
First, a first operation example will be described with reference to the flowchart of FIG.
This optical disk recording / reproducing apparatus waits for the insertion of an MRW disk, which is a Mount Rainier standard disk, in step 1, and when it is inserted, starts the drive mounting process in step 2. The mounting process checks and stores what kind of disc has been inserted into the optical disc recording / reproducing apparatus, what kind of state the disc is, etc. so that the file system of the computer can be accessed, and also stores the user data. If the area defect detection (verify) is required, the subsequent processing including the detection is performed.
[0040]
Subsequently, in step 3, it is determined whether or not verification has been completed (a defect in the user data area has been detected). For example, when the MRW disk is a DVD + MRW disk, the value of the last verify address LVA of the block 28 shown in FIG. 5 of the MIP in the MTA as shown in FIG. It is determined whether or not verification has been completed based on whether or not the area has been reached. As a result, if it is determined that the verification has been completed, the process proceeds to step 4 because the defect detection (verification) is not required. If it is determined that the verification has not been completed, the process proceeds to step 6 because the defect detection (verification) is required. This is the function as the first determination means.
[0041]
In step 4, it is determined whether or not the format and verification (defect detection) in the user data area of the MRW disc have been performed by the own apparatus, that is, the own optical disc recording / reproducing apparatus. This corresponds to the function of the own-competitor's machine determination means.
Then, for example, if the MRW disk is a DVD + MRW disk, it is determined whether or not the drive is its own drive based on the drive manufacturer name described in the drive ID in the FDCB shown in FIG. If the MRW disk is a CD-MRW disk, it is determined whether or not the drive is a drive of its own machine based on the manufacturer code described in the recorder ID (RID) shown in FIG. If it is determined in step 4 that the verification has been performed by the drive of the own device, it is determined that there is no need to perform the defect detection again, and the process proceeds to step 5, otherwise, the defect detection is performed again. It is determined that it is necessary to perform the operation, and the process proceeds to step 8.
[0042]
In step 5, it is determined whether or not the verification processing of the user data area of the MRW disk has been performed by the own drive. This corresponds to the function of the self / other device determination means.
For example, if the MRW disk is a DVD + MRW disk, this verifying process is performed by its own drive using the drive model name and the drive-specific serial number described in the drive ID in the FDCB shown in FIG. It is determined whether or not there is. If the MRW disc is a CD-MRW disc, it is determined whether or not this verifying process has been performed by its own drive according to the recorder type code or unique number described in the recorder ID shown in FIG. Is determined.
[0043]
As a result, if it is determined that the verification process has been performed by the own drive, the process proceeds to step 6 because it is not necessary to perform the defect detection again. If it is determined that the verification process has been performed by another drive, the defect detection is performed again. It is necessary to perform the above, so the process proceeds to step 8.
The judgments in Steps 4 and 5 correspond to the function of the second judgment means.
[0044]
If it is determined in step 3 that the verification has been completed and the process proceeds to step 6, the entire surface of the MRW disk is formatted, and in step 7, the entire user data area on the disk surface is verified (defect detection). Thereafter, the process proceeds to step 12 to report the end of mounting to the host computer 9, and ends the processing. The processing in steps 6 and 7 corresponds to the function of the first defect detection means.
[0045]
If the MRW disc is a DVD + MRW, the procedure proceeds to step 9 to update the LVA and the drive ID. If the MRW disc is a CD-MRW, the procedure proceeds to step 10 if the MRW disc is a DVD + MRW. Then, the LVA and the recorder ID are updated.
Thereafter, the process proceeds to step 11 to automatically verify (defect detection) the entire surface of the disk. Then, in step 12, the end of the mount is reported to the host computer 9, and the processing is ended. The processing in step 11 corresponds to the function of the second defect detection means.
[0046]
[Second operation example: FIG. 3]
Next, a second operation example will be described with reference to the flowchart of FIG.
Also in the second operation example, the CPU controller 11 shown in FIG. 1 executes the determination and processing corresponding to Steps 1 to 7 and Step 12 in FIG. 2 as in the first operation example. However, instead of the judgments and processes of steps 8 to 11 between the circled symbols A and B in FIG. 2, the judgments and processes of steps 21 to 27 shown in FIG. 3 are executed.
[0047]
If NO in step 4 or 5 in FIG. 2, that is, if it is determined that defect detection is necessary again, the process proceeds to step 21 in FIG. Then, the process waits for a recording request from the host computer 9 to be received.
In step 22, as in step 8 in FIG. 2, the type of the MRW disk is confirmed. If the MRW disk is a DVD + MRW, the process proceeds to step 23, where the LVA and the drive ID are updated. Proceed to 24 to update the LVA and the recorder ID.
[0048]
Thereafter, the process proceeds to step 25, and waits for a user's recording request from the host computer 9. If there is a recording request, the data is recorded in the user data recording area in step 26, and the recording area is verified in step 27. (Defect detection). This corresponds to the function of the second defect detecting means described in claim 10 of the present invention.
Thereafter, the process proceeds to step 12 shown in FIG. 2 to report the end of mounting to the host computer 9 and end this operation.
[0049]
The first and second determination means and the first and second defect detection means according to the present invention are not limited to the example described in the above embodiment, but may be variously modified as long as the object of the present invention can be achieved. Of course, it is possible.
[0050]
【The invention's effect】
As described above, according to the present invention, an information recording / reproducing apparatus (drive) used when recording or reproducing data on an information recording medium such as a DVD + MRW or a CD-MRW conforming to the Mount Rainier standard. Regardless of whether the information recording medium is formatted and detected (verified) by another drive (other company's drive) Data can be recorded or reproduced.
Further, even if the information recording medium (a disc such as a DVD + MRW or a CD-MRW) is taken out and inserted again during the defect detection (verify) processing of the information recording medium, the defect can be detected properly. Thus, the reliability of the subsequent data recording or reproduction can be improved.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an optical disk reproducing / recording apparatus which is an embodiment of an information recording / reproducing apparatus according to the present invention.
FIG. 2 is a flowchart showing a first operation example by a CPU controller of the optical disc reproduction / recording apparatus shown in FIG.
FIG. 3 is a flowchart showing a determination / process of a part replacing Steps 8 to 11 in FIG. 2 of the second operation example.
4A and 4B are diagrams illustrating an example of a configuration of a recording area of an information recording medium (disk) according to the Mount Lenier standard. FIG. 4A illustrates an example of a CD-MRW disk, and FIG. 4B illustrates an example of a DVD + MRW disk.
FIG. 5 is a diagram showing an example of a configuration of MIP / SIP in a DVD + MRW disc.
FIG. 6 is a diagram showing an example of a configuration of MIP / SIP in a CD-MRW disc.
FIG. 7 is a diagram showing an example of the configuration of a recorder ID code in a CD-MRW disc.
FIG. 8 is a diagram showing an example of a configuration of an FDCB in a DVD + MRW disc.
FIG. 9 is a diagram showing an example of the configuration of a recording area of an MRW-formatted disc in a conventional information recording / reproducing apparatus.
[Explanation of symbols]
1: Optical disk 2: Spindle motor
3: Rotation control system 4: Optical pip-up
5: Optical pip-up control system 6: Coarse motor
7: Coarse motor control system 8: Signal processing system
9: Host computer 10: External interface
11: CPU controller 12: Non-volatile memory
13: Buffer memory

Claims (14)

Information recording means for recording on an information recording medium having a user data area accessible from a user and a replacement area for replacing a defect in the user data area;
First determining means for determining whether to detect a defect in the user data area;
An information recording / reproducing apparatus comprising: a first defect detection unit that detects a defect in the user data area when the first determination unit determines that defect detection is necessary; A second determination unit that determines again whether or not the defect detection is necessary for the user data area for which it is determined that the defect detection is unnecessary;
An information recording / reproducing apparatus, further comprising: a second defect detection unit for detecting a defect in the user data area again when the second determination unit determines that defect detection is necessary. The information recording / reproducing apparatus according to claim 1,
The first determining means is a means for determining whether or not the defect detection is necessary by determining whether or not the user data area has been verified,
An information recording / reproducing apparatus, wherein both the first defect detecting means and the second defect detecting means verify the inside of the user data area. The information recording / reproducing apparatus according to claim 2,
The first judging means comprises at least a main information packet (MIP) in a main table area of the information recording medium formatted according to the Mount Rainier standard and a secondary information packet (SIP) in a secondary table area. An information recording / reproducing apparatus characterized in that it is means for judging whether or not the data has been verified, based on a value of a last verified address (LVA) existing on one side. The information recording / reproducing apparatus according to any one of claims 1 to 3,
The second judging means may be a device for detecting a defect in the user data area in the inserted information recording medium, which is an in-house information recording / reproducing device, or an information recording / reproducing device of another company. An information recording / reproducing apparatus, characterized in that the information recording / reproducing apparatus is an own-competitor apparatus determining means for determining whether the processing is performed by another company apparatus. The information recording / reproducing apparatus according to claim 4,
The self-competition device determination means is a means for performing the determination based on a drive ID described in a format of formatting disc control block (FDCB) of an information recording medium formatted according to the DVD + MRW standard. Information recording and playback device. The information recording / reproducing apparatus according to claim 4,
The information recording / reproducing apparatus according to claim 1, wherein said own-competitor apparatus determination means is a means for making said determination based on a recorder ID code recorded on an information recording medium formatted according to the CD-MRW standard. The information recording / reproducing apparatus according to any one of claims 1 to 3,
The second determination means may detect whether a defect in the user data area in the inserted information recording medium has been detected by the information recording / reproducing apparatus itself, or may be another information recording / reproducing apparatus. An information recording / reproducing apparatus characterized in that the information recording / reproducing apparatus is an own / other apparatus judging means for judging whether or not the processing has been performed. The information recording / reproducing apparatus according to claim 7,
The self-other device judgment means is means for making the judgment based on a drive ID described in a format of formatting disc control block (FDCB) of an information recording medium formatted according to the DVD + MRW standard. Information recording and playback device. The information recording / reproducing apparatus according to claim 7,
The information recording / reproducing apparatus according to claim 1, wherein the self / other device judging means is a means for making the judgment based on a recorder ID code recorded on an information recording medium formatted according to the CD-MRW standard. The information recording / reproducing apparatus according to any one of claims 1 to 9,
The information recording / reproducing apparatus according to claim 2, wherein the second defect detecting means is a means for detecting a defect in the user data area on the recording area after recording the data requested by the user. The information recording / reproducing apparatus according to any one of claims 1 to 9,
The information recording / reproducing apparatus according to claim 2, wherein the second defect detecting means is means for automatically detecting a defect in the user data area. The information recording / reproducing apparatus according to claim 1,
The information recording / reproducing apparatus according to claim 2, wherein the second defect detecting means is a means for detecting a defect on the entire surface of the information recording medium. The information recording / reproducing apparatus according to claim 12,
The information recording / reproducing apparatus according to claim 2, wherein the second defect detecting means is a means for detecting a defect on the entire surface of the information recording medium in the background when there is no access from a user. The information recording / reproducing apparatus according to any one of claims 3, 5, 6, 8, and 9,
When the second defect detecting means detects a defect in the user data area, if the information recording medium is a disk formatted in conformity with the DVD + MRW standard, a last verified address recorded on the disk is used. (LVA) and the drive ID described in the format of formatting disc control block (FDCB),
If the information recording medium is a disk formatted in conformity with the CD-MRW standard, the information recording medium has means for updating a last verified address (LVA) and a recorder ID code recorded on the disk. Information recording and playback device.

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