JP2003030934A - Recording and reproducing device for medium like disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a disk discrimination information area in a disk, by using defect address information recorded in a defect information area of the disk to discriminate the disk, with respect to disk discrimination information which has been conventionally recorded in a management area of the disk. SOLUTION: A recording and reproducing device reads out defect addresses, when formatting or certifying a discoid medium 11 and records defect address information in a prescribed area 13 of the discoid medium, and the read defect address information is written only in memory 22 of the recording and reproducing device, and discrimination information of the discoid medium is also written 24 in the memory, while being made to correspond to the defect address information; and agreement between the defect address information from the discoid medium and hat from the memory is detected to obtain the discrimination information of the discoid medium. The discrimination information of the discoid medium is set automatically by a controller 21 in the recording and reproducing device, and is written 24 in the memory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium such as a magneto-optical disk and a recording / reproducing apparatus therefor, and more particularly to a technique for securing a data area of the recording medium.

[0002]

2. Description of the Related Art In a conventional magneto-optical disk device, its defective address information is recorded on a disk and used in replacement processing. Further, in order to recognize which disc is mounted in the magneto-optical disc device, it is necessary to record identification information on the disc in advance.

FIG. 5 shows an example of a conventional magneto-optical disk device and a disk area layout. The defect address information of the disc is recorded in the defect information area 13 of the disc 11, and the disc identification information is the magneto-optical disc device 1.
At the same time as being stored in the memory 22 through the controller 21 from the key input unit 23 of the disk drive 20
Are recorded in the disc identification information area 24 in the management area 14 of the disc 11. The disk area layout 15 shows the disk area of the disk 11.

[0004]

In the conventional magneto-optical disk device, the defective address information is recorded in the defect information area 13 of the disk 11 and in the defect information area 18 of the disk layout 15 as shown in FIG. Further, the identification information for identifying the disc is recorded in the management area 14 of the disc 11 and in the disc identification information area 24 of the management area 17 in the disc layout 15, and the respective disc areas are required accordingly. It was

Information for identifying the disc is
For example, it is necessary to perform the setting operation from the key input unit 23.

It is an object of the present invention to disc-identify the disc identification information which has been conventionally recorded in the disc management area by utilizing the defect address information recorded in the disc defect information area. It is possible to eliminate the disc identification information area, and to save the trouble of setting it from the key input unit by automatically writing the disc identification information in the memory of the disc device.

Further, since it is expected that the number of defective addresses will increase, it is necessary to update the latest information by writing the defective address information in the memory of the disk device at any time.

[0008]

In order to solve the above problems, the present invention adopts the following configurations. In a recording / reproducing apparatus that reads a defective address at the time of formatting or certifying a disc-shaped medium and records the defective address information in a predetermined area of the disc-shaped medium, the read defective address information is written only in a memory in the recording / reproducing apparatus. At the same time, the disc-shaped medium identification information is also written in the memory in association with the defective address information, and the disc-shaped medium identification information is detected by detecting the coincidence of the defective address information from the disc-shaped medium and the memory. Recording / reproducing apparatus for obtaining.

In the recording / reproducing apparatus, the disc-shaped medium identification information is automatically set by a controller in the recording / reproducing apparatus and written in the memory.

Further, in the recording / reproducing apparatus, the recording / reproducing apparatus for reading the defective address information recorded on the disk-shaped medium and re-recording it in a memory in the recording / reproducing apparatus.

[0011]

DETAILED DESCRIPTION OF THE INVENTION A recording / reproducing apparatus according to an embodiment of the present invention will be described below with reference to FIGS. The recording / reproducing apparatus according to the present embodiment includes a disk 11 (as an example, a magneto-optical disk) and a disk drive control device 19 (hereinafter, referred to as a disk device) that drives and controls the disk.
It consists of and.

As shown in FIG. 1, the disk 11 is divided into a data area 12 and a management area 14, and a defect information area 13 for recording defect address information. The disk device 19 also includes a key input unit 23, a disk drive 20 for driving a disk, a memory 22 having a disk identification information area 24, and a controller 21 for controlling various components. Reference numeral 15 is a disc area layout for explaining the disc area.

Here, the disk 11 is added to the disk device 19.
When the format or certify operation is performed with the mounted, the defective address information is temporarily held in the controller 21.

Upon completion of the format or certify operation, the defective address information is transferred from the controller 21 to the defect information area 13 of the disk 11 (the defect information area 18 in the disk area layout 15) and the disk device 19.
It is recorded in the internal memory 22.

At this time, the disc identification information is also recorded in the disc identification information area 24 in the memory 22. A value different from other disk identification information held in the memory 22 is set as the disk identification information by the controller 21.

Regarding the above operation, focusing on the controller 21 of the disk device 19, the flow is as shown in FIG. The formatting or certifying operation is started in step Sl, and it is determined in step S2 whether or not the disk 11 has a defect. If a defect is found, step S3
The defective address is temporarily stored in the controller. Step 4 to end the format or certify operation
After confirming in step 5, when finished, in step 5, disk 11
The defective address information is recorded in the memory 22 of the disk device 19.

Further, in step 6, the disc identification information different from the other disc identification information held in the memory 22 is automatically set by the controller 21 and recorded in the disc identification information area 24.

Next, FIG. 3 shows the flow of identifying whether the disc is a desired disc from the disc identification information.
It is what was seen focusing on. Disk 11 in step 11
And the defective disk information is read from the memory 22. In the next step 13, it is determined whether the respective values match. If they do not match, the defective address information is read again from the memory 22 in step 12, but the defective address information is read from the next position read previously. In step 13, a match determination is made in the same way.

If there is a match in the judgment at step 13,
The disc can be recognized by reading the disc identification information corresponding to the defective address read from the memory 22 in step 14 from the disc identification information area 24 of the memory 22. For example, if the disc identification information is 1,
In the case of setting numbers such as 2, 3, ..., For example, if 2 is desired, it is possible to identify the disks to which the number 2 is assigned.

As described above, when the defective address information is recorded in the memory of the disk device, the information for identifying the disk is also recorded, so that the defective address information in the memory of the disk device and the disk are recorded in the disk. As a result of the comparison, it is possible to identify whether or not the disc is a desired disc based on the disc identification information at the time of coincidence. That is, it is not necessary to provide the disc identification information area 24 on the disc as shown in FIG.

Next, FIG. 4 shows that the controller 21 re-records the defective address recorded in the disk device 19.
(The disk is not always driven and controlled by the same disk device, and may be loaded in another disk device to update defective address information). Step 21 shows that the re-recording of the defective address has been input to the key input unit 23. Thereby, in step 22, defective disk information is read from the disk 11. The read defective disk information is recorded in the memory 22 in step 23.
It is recorded in the holding position corresponding to the disc identification information of 1.

As described above, the defective address can be read out from the area recorded on the disk to the disk device and re-recorded in the memory of the disk device at any time, and the latest defective address information can be reflected.

[0023]

According to the present invention, by using the defect address information recorded in the defect information area of the disk without using the disk identification information recorded in the management area of the disk, It is possible to reduce the area used by the disk and automatically write the disk identification information in the memory of the disk device, thereby making it possible to save the time and effort for setting from the key input unit.

Further, according to the present invention, since it is expected that the number of defective addresses will also increase, the defective address information can be written in the memory at any time, and the defective address information of the disc can be stored in the disc side and the disc device side. It is possible to match the latest information.

[Brief description of drawings]

FIG. 1 is a diagram showing various area formations and internal block configurations in a recording medium and a disk device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a writing mode of defective address information and disc identification information according to the present embodiment.

FIG. 3 is a flowchart showing a read mode of defective address information and disc identification information according to the present embodiment.

FIG. 4 is a flowchart showing a mode of re-recording defective address information in the disc according to the present embodiment in a memory in the disc device.

FIG. 5 is a diagram showing various area formations and internal block configurations in a recording medium and a disk device according to a conventional technique.

[Explanation of symbols]

11 discs 12 data areas 13 Defect information area 14 Management area 15 disk area layout 19 Disk device 20 disk drive 21 Controller 22 memory 23 Key input section 24 Disc identification information area

Claims (3)

[Claims] 1. A recording / reproducing apparatus for reading a defective address at the time of formatting or certifying a disk-shaped medium and recording the defective address information in a predetermined area of the disk-shaped medium, wherein the read defective address information is stored in the recording / reproducing apparatus. Of the disc-shaped medium, the identification information of the disc-shaped medium is also written in the memory in association with the defective address information, and the disc is detected by detecting the coincidence of the defective address information from the disc-shaped medium and the memory. A recording / reproducing apparatus characterized by obtaining identification information of a strip medium. 2. The recording / reproducing apparatus according to claim 1, wherein the disc-shaped medium identification information is automatically set by a controller in the recording / reproducing apparatus and is written in the memory. 3. The recording / reproducing apparatus according to claim 1, wherein the defective address information recorded on the disk-shaped medium is read and re-recorded in a memory in the recording / reproducing apparatus. Recording / playback device.