JPH05135502A - Information recording/reproducing device - Google Patents

Abstract

PURPOSE:To improve the reliability when a block is replaced with another one that has a margin of the rewriting frequency and to shorten the replacement processing time by providing two or more replacement destination address pointers in a replacement processing state. CONSTITUTION:A device control part 61 contains a verifier means which verifies the reliability of the recorded data, a replacement means which replaces the defective date recognized by the verifier means with another area, and 8 format means which initializes a control area where a medium is controlled. Furthermore the part 61 includes two or more replacement destination address pointers A and B. In such 8 constitution, the replacement processing is carried out with use of both pointers A and B. Thus it is possible to improve the reliability with replacement of a block with another one that has a margin of the rewriting frequency and also to shorten the replacement processing time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for recording / reproducing data.

[0002]

2. Description of the Related Art In recent years, an information recording / reproducing apparatus, such as an optical disk recording / reproducing apparatus, which uses a medium made of a new material, has been commercialized along with the expansion of the capacity of a recording medium and high-speed search. However, there is a problem that the capacity is expanded but the number of rewrites is limited.

A conventional information recording / reproducing apparatus will be described below. FIG. 4 shows an example of a general configuration of an optical disk recording / reproducing apparatus which is an information recording / reproducing apparatus. Figure 4
In the figure, 1 is a disc-shaped recording medium that is a medium capable of recording and reproducing the data, 2 is a recording / reproducing head that is the recording / reproducing means for recording or reproducing, 3 is a disk motor that rotates the disc-shaped recording medium, 4 Is a recording / reproducing head control unit for controlling the position of the recording / reproducing head, 5 is a signal processing unit for demodulating a signal reproduced by the recording / reproducing head and modulating for recording by the recording / reproducing head, and 6 is the disk A motor, the recording / reproducing head control unit, and a device control unit for issuing a command to the signal processing unit, and an interface unit 7 for communicating with a host computer 8.

With respect to the information recording / reproducing apparatus configured as described above, the replacement process and reformatting operation will be described below.

FIG. 5 shows a general replacement processing procedure of a conventional information recording / reproducing apparatus. The device control section 6 receives a command accompanied by an inspection after recording from the host computer, for example, a write-and-verify command, and starts a replacement process if a defective sector is detected during execution. When the replacement process is started, the device control unit 6 records the replacement block in the replacement block in step (32), verifies the replacement block in step (33), and inspects whether the recording was successful. If it is determined in step (34) that the recording was successful, the process ends normally. If it is determined in step (34) that the recording has not been normally performed, the number of trials is checked in step (35). If the number of trials has not exceeded N, the replacement destination address pointer is updated (for example, 1 is added) in step (36), and the process proceeds to step (32). Step (3
If it is determined in 5) that the number of trials has exceeded N, the process proceeds to step (38) and ends in error. Next, FIG. 6 shows the movement of the pointer of the replacement address before and after the reformatting process of the conventional information recording / reproducing apparatus. In FIG. 5, there is one replacement address pointer, and when reformatting is performed, it is returned to the initial position and the processing is completed.

[0006]

However, in the above-mentioned conventional configuration, when the number of rewrites is limited, the block exceeding the number of rewrites is replaced with another block by the replacement process. However, after the reformatting, if the replacement destination address pointer is initialized, there is a possibility that the block may be replaced with a block that is close to or over the limit of the number of rewrites. In this case, the replacement address pointer is updated several times and retries are performed one after another, but there is a possibility that a block that has not reached the limit of the number of rewrites within the number of retries cannot be reached, and the time for the replacement process is also increased. It costs.

In view of the above problems, the present invention is an alternation process of an information recording / reproducing apparatus using a medium whose number of rewrites is limited, and improves reliability by exchanging to a block having a sufficient number of rewrites. (EN) An information recording / reproducing apparatus capable of shortening the time for replacement processing.

[0008]

In order to solve the above-mentioned problems, an information recording / reproducing apparatus of the present invention comprises a recordable / reproducible medium, a recording / reproducing head for recording / reproducing data, and a recorded data recording / reproducing head. Verifying means for confirming reliability; replacing means for replacing the data recognized as defective by the verifying means to another area; formatting means for initializing a management area for managing the medium; and verifying And a replacement means and a formatting means are built-in, and there is a configuration having two or more replacement destination address pointers when the replacement processing is performed by the replacement means.

[0009]

With this configuration, in the replacement process of the information recording / reproducing apparatus using the medium in which the number of times of rewriting is limited, the reliability is improved by replacing the block in which the number of times of rewriting is large and the time of the replacement process is reduced. It can be shortened.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An information recording / reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the configuration of an optical disk recording / reproducing apparatus which is the information recording / reproducing apparatus of the present invention.
In FIG. 1, 1 is a disk-shaped recording medium that is a medium capable of recording and reproducing the data, 2 is a recording / reproducing head that is the recording / reproducing means for recording or reproducing, and 3 is a disk motor that rotates the disk-shaped recording medium. Reference numeral 4 denotes a recording / reproducing head control unit that controls the position of the recording / reproducing head, and 5 denotes a signal processing unit that demodulates a signal reproduced by the recording / reproducing head and performs modulation for recording by the recording / reproducing head.
Reference numeral 1 is an apparatus control unit having replacement destination address pointers A and B, which issues a command to the disk motor, the recording / reproducing head control unit, and the signal processing unit, and 7 is an interface unit for communicating with a host computer.

The replacement process and reformatting operation of the information recording / reproducing apparatus configured as described above will be described below.

FIG. 2 shows a replacement processing procedure of the information recording / reproducing apparatus of the present invention. The device control unit 61 receives a command accompanied by an inspection after recording, for example, a write-and-verify command from the host computer, and starts a replacement process if a defective sector is detected during execution. Device control unit 6
When 1 starts the replacement process, the data is recorded in the block indicated by the replacement address pointer A in step (12), the replacement block is verified in step (13), and it is checked whether or not the recording was successful. If it is determined in step (14) that the recording was successful, the process ends normally. If it is determined in step (14) that the recording has not been performed normally, in step (15) the number of trials is checked. Number of trials is M
If it does not exceed the number of times, the replacement destination address pointer A is updated (for example, 1 is added) at step (16), and then step (1
Proceed to 2). When it is determined in step (15) that the number of trials has exceeded M times, the process proceeds to step (17), in which the record is made in the block indicated by the replacement destination address pointer B in step (17), and the replacement destination block is recorded in step (18). Verify and check if the recording was successful. If it is determined in step (19) that the recording was successful, the process ends normally. If it is determined in step (19) that the recording has not been normally performed, the number of trials is checked in step (20). If the number of trials does not exceed M, step (2
In 1), the replacement address pointer A is updated (for example, 1 is added), and the process proceeds to step (17). Step (20)
Then, if it is judged that the number of trials exceeds M times, the step (2
Proceed to 3) and end with an error. Next, FIG. 3 shows the movement of the pointer of the replacement address before and after the reformatting process of the information recording / reproducing apparatus of the present invention. In FIG. 3, there are two replacement destination address pointers A and B, and when reformatting is performed, the replacement destination address pointer A is returned to the initial position, but the replacement destination address pointer B retains its value and ends.

As shown in the above configuration, by providing two or more replacement destination address pointers, the replacement processing of the information recording / reproducing apparatus using the medium whose number of rewriting is limited,
The reliability can be improved by replacing the block with a sufficient number of rewrites, and the replacement process can be shortened in time.

Although the optical disk recording / reproducing apparatus has been described in the embodiment, application to a similar apparatus using another recording medium such as an optical card or a magnetic disk is also within the scope of the present invention.

[0016]

As described above, according to the present invention, the replacement processing of the information recording / reproducing apparatus using the medium in which the number of rewriting is limited by providing two or more replacement destination address pointers,
It is possible to improve reliability by replacing a block having a sufficient number of times of rewriting and shorten the replacement processing time.

[Brief description of drawings]

FIG. 1 is a schematic block configuration diagram of an information recording / reproducing apparatus of the present invention.

FIG. 2 is a flowchart showing a procedure of performing a replacement process of the present invention.

FIG. 3 is a diagram showing the movement of a replacement address pointer during reformatting according to the present invention.

FIG. 4 is a schematic block configuration diagram of a general information recording / reproducing apparatus.

FIG. 5 is a flowchart showing a procedure for performing conventional replacement processing.

FIG. 6 is a diagram showing the movement of a replacement address pointer during reformatting in the related art.

[Explanation of symbols]

 1 disk-shaped recording medium 2 recording / reproducing head 3 disk motor 4 recording / reproducing head control unit 5 signal processing unit 6 device control unit 7 interface unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoji Hasegawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A recording / reproducing medium, a recording / reproducing head for recording / reproducing data, a verifying means for confirming the reliability of the recorded data, and a data area recognized as a defect by the verifying means in different areas. And a device control unit for controlling the verifying unit, the replacement unit and the formatting unit, and the replacement process by the replacement unit. An information recording / reproducing apparatus having two or more replacement destination address pointers indicating a replacement destination address. 2. A replacement destination address pointer A that returns to the initial position by reformatting, and a replacement destination address pointer B that does not return to the initial position by reformatting.
Information recording / reproducing apparatus described.