JPH02152072A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To find an objective alternative sector to improve the reliability of data management by dividing a recording area to plural sectors and assigning each sector to management information of recording sectors of a block to use the sector. CONSTITUTION:An objective track address and an objective sector address indicated by a host computer 1 are sent to a driving part 4, and the driving part 4 sends status information to a control part 3. The control part 3 reads in data from the computer 1 and sends it to the driving part 4 in the case of normal status information, but the substitution processing is performed by a substitution processing circuit 36 in case of abnormal status information. The circuit 36 sends a control signal, by which a defective sector address and a substitution destination sector address are recorded in an address write area for the objective sector in the sector for alternative sector address in the same track, and address information to the driving part 4 to perform the substitution processing. Thus, the objective alternative sector is found to improve the reliability of data management.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an information recording device for recording and/or recording information on a recording medium. In particular, the present invention is an information recording apparatus for recording information on a recording medium having an information recording area having a sector structure divided into a plurality of parts.

[Prior art and its problems] In recent years, as the amount of information to be handled has increased, a recording medium of the type 1) is desired, and optical information recording media are being widely used. Among optical information recording media, optical disks have tracks arranged concentrically or spirally, and each track is divided into multiple sectors in order to record variable length data and to speed up access. , optical recording or iIj generation is performed in sector units. Such a sector! The feeling of recording information or giving birth in the 11th place! In the %lt recording jli production device, it is necessary to record information in a designated sector and to perform reproduction from that sector.

However, in an information recording rlT production device that uses a recording medium such as an optical disk that does not have very good X-ray characteristics, defective sectors may occur. Bad sector and 11, address of preformatted sector is 1r-L < Sectors and data that cannot be demodulated, iL! There are sectors where there is a large dropout in the recording area and a data read error that cannot be corrected even if data is recorded, or a data read that cannot be corrected even after actually recording data. This refers to the sector where the error occurred.

Generally, optical discs use a direct access method that directly specifies sector addresses. Therefore, since there is a core type that also records data in the aforementioned bad sector, there is an alternative sector that replaces the data that should be recorded in the bad sector, or
We create a set of alternative tracks once a month. In other words, when recording data in a sector specified by the user, if the target sector to be recorded is a bad sector, it is recorded in a prepared alternative sector, and if the bad sector is accessed when the user is new, Also, by reading the alternative sector, the target sector can be changed to 1.
It is necessary to make it work as if it were a real thing. In order to perform such operations, an address map, that is, a management table that associates the address of the sector specified by the user, that is, the logical address, and the address of the sector that was actually recorded, that is, the physical address, is created on the information recording medium [ .

It is prepared for you.

Hereinafter, such alternative processing will be explained using an optical disk device as an example.

An optical disc has approximately two tracks arranged on one side of a disc with a diameter of 20 cm, and the sectors of each track include:
The track address, sector address, and error detection or error correction code for each sector are preformatted in advance.

Optical disk devices have two types of search mechanisms known in the art: kick, which performs track jumping by swinging a light beam using an optical head, and seek, which uses an optical head transport mechanism such as a linear motor. The standard for how much kick or seek is used is determined by the amount of track to be moved and the performance of the optical head.

The time required for alternative processing in this optical disk device is
It depends on the sum of the time to detect that a specified sector is a bad sector, the time to find a replacement sector for the specified sector, the time to search the track of the replacement sector, and the rotational waiting time to access the replacement sector.

During recording, the time to find a replacement sector for the specified sector mentioned above is the sum of the time to search the track of the management table and the rotational waiting time to access the management table.
During playback, if the management table has not been read in advance, it takes the same amount of time as during recording; if it has been read, it takes time to read predetermined information from the memory being read.

However, in the conventional technology mentioned above, it is necessary to update the management table every time a bad sector occurs, and during playback,
There is a problem in that a search cannot be performed until the replacement sector address of the bad sector is known from the management table.

In addition, the management table must reside outside the information storage device (inside U or in a memory area in the computer outside the information storage device, and if the number of bad sectors is large, the usage of the management table will be ignored. become unable.

Furthermore, when performing alternative processing, a seek or kick is always required to access the 5 management table.
When using high-speed access, there is a problem in that the access time increases.

[Background of the Invention] Therefore, the inventor of the present invention has developed a system that does not have a management table that should be resident.
312 records of information that can be accessed quickly and directly +lj
The following inventions have already been proposed in order to provide a production device.

It is an information recording tTi production device that divides the information recording area of a recording medium into a plurality of sectors, and has means for individually recording and/or generating rl in each sector, and further divides the inside of the sector into a plurality of areas. This information recording and reproducing apparatus is characterized by having means for dividing and intermittently recording data.

Then, by dividing each area into a plurality of areas and using each area for each type of management information of the recording sector in the block,
+It is possible to solve the problem in item iii.

By providing a sector with an alternate sector address, when a bad sector is found, the head can be moved to another track without having to seek or kick it.

An alternative sector address can be obtained in less than one revolution.

However, in information recording media such as optical discs that have a high defect rate, even data that has been normally recorded and produced may not be able to be used in Baidu 11G production due to the effects of scratches and dust after recording. As a result, the sector for alternative sector address prepared for each track cannot be reproduced, and even though it is recorded as an alternative sector on the information recording medium l-, the address is not known, so alternative processing cannot be executed. There is a possibility that

[Means for Solving the Problems] A fourteenth object of the present invention is to provide an information recording amphibious device that solves the problem described in item 1.

The above purpose is to divide an information recording area of a recording medium into a plurality of sectors, and to write and/or record each sector individually in an information recording main device having one stage.

A means for dividing the sector into a plurality of areas and intermittently recording data, and an alternative sector address for a defective sector in an I block consisting of a plurality of sectors, in the same block! Information characterized in that it has a means for recording or generating data in a sector or a plurality of sectors collectively or individually in a storage area of a sector or a plurality of sectors, and records substituted sector address information together with data information in a data area of a substitute sector. Accomplished by recording 11f raw equipment.

[Operation] According to the present invention, by recording substituted original sector address information as data in the data area of the substitute sector, the substitute sector address sector provided on each track can be reproduced. Even if it is not possible, 2
By sequentially reproducing the alternative sectors from the beginning, the desired alternative sector can be found.

[Embodiment 1] Hereinafter, an embodiment of the information recording 111 generating device according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of the configuration of the information recording 111 generating device of the present invention applied to an optical disk device using a write-once optical disk medium.

In FIG. 1, a drive section 4 is a section that drives an optical disk having the recording format shown in FIG. 2 to record or reproduce information, and its operation is executed by a signal from a control section 3. This signal also includes the recording and IIi raw data signals. The control unit 3 has MPu: 31. II
It is composed of an AM 32, a ROM 33, an I10 control section 34, an error correction code addition circuit (ECC circuit) 35, and an alternative processing circuit 36. In addition, the control unit 3
It is connected to the main computer l via an adapter 2.

Recording and reproducing operations using alternative processing in this embodiment will be described with reference to FIG.

The target track address and target sector address instructed by the L computer 1 are stored in the RAM 32 via the SC5I adapter 2 and the MPU 31. Ml
'By U 31! Activate the 7070 control 4 and send the 1.1 track address to the drive section 4. The drive section 4 moves an optical head (not shown) to the target track address, and when the movement is completed, it sends this fact to the control section 3 as status information. After receiving the data status information from the drive unit 4, the MPU 31 of the control unit 3 stores data in the RAM 32.
The [-target sector address stored in 1) is sent to the drive section 4 in the same procedure as the target track address described in 1). In the drive unit 4, when the optical head (not shown) generates a track t1 of the target sector 1), and when it matches the target sector address, an error detection circuit (not shown) detects the state of the sector 1], and it detects an error. In this case, this information is sent to the control unit 3 as status information.

When the status information is normal, the control section 3 reads data from the main computer 1 and sends the data to the drive section 4, and when the status information is normal, the alternative processing circuit 36 performs alternative processing. The alternative processing circuit 36 sends a signal to the drive unit 4 to record a defective sector address and an alternative sector address in the address write area for the target sector in the alternative sector address sector in the same track. The control signal and the above-mentioned address information to be recorded are sent to the drive unit 4 to perform alternative processing. Even when an error is detected in the error detection circuit (not shown) of the drive section 4 during data recording, the above-described alternative processing circuit 36 performs similar processing, and the recording operation is performed p1 times.

Regarding the double operation, the target sector is reproduced in the same manner as the target track and target sector access procedure described above, and even when an error is detected in the error detection circuit (not shown) described above, the alternative processing circuit 36 reproduces the same track. The drive unit 4 regenerates the alternative sector address in the river sector.
Based on the reproduced alternative sector address, an alternative sector address for the target sector is determined, and an instruction is issued to the drive section 4 to generate an alternative sector.

FIG. 2 shows an embodiment of the recording format of an information recording medium used in the information recording/reproducing apparatus of the present invention.

The recording and [li raw procedures including alternative processing] will be explained using FIG.

First, the recording operation will be explained.

Consider the case where you try to record information "a" in the second sector of track #0.In this case, this sector is a bad sector 24, so write an alternative sector of track #0 on the same track. One alternative sector address for the address sector 23 is recorded in the area of the pointer 27 shown in FIG. a
” and the replaced original address 60 are also recorded.

Here, the alternative sector address sector 23 consists of an ID section 28 and a management table area 26, and the management table area 26 has the number of recording sectors of the #O track O, 1, 2,
If there are five areas 3 and 4, the area is divided into five areas correspondingly.

Next, the operation during playback will be explained.

The information of the second sector of track #0 shown in Fig. 2 is 111
Consider the case where you try to live. At this time, this sector is
Since it is bad sector 24, #0 is on the same track.
A sector 23 for an alternative sector address of the truck is provided,
Since the alternative sector address is recorded in the pointer 27 area, the alternative sector 25 corresponding to that sector address
and get the desired result.

If the alternative sector address sector 23 becomes unplayable for some reason, the alternative track area 23
The reproduction is performed sequentially from the first sector of No. 2, and processing is executed using the data when the substituted original address 60 in the 74 raw data matches the second sector of the #0 track as substitute data.

With this configuration, even if one sector for alternative sector addresses written five times on each track cannot be generated, the desired alternative sector can be found by sequentially generating one alternative sector from the beginning. Can be done.

[Effects of the Invention] As described in detail below, according to the information recording and bicycling device of the present invention, by recording substituted sector address information in the data area of the substitute sector, Even if a sector for an alternative sector address cannot be reproduced, the desired alternative sector can be found by sequentially reproducing one alternative sector from the beginning, which has the effect of improving the reliability of data management.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a recording format of an information recording 1i recording apparatus according to the present invention. 1: Main computer, 2: 5C3I adapter, 3
: control unit, 31 +MPU, 32 :llA&l,
34: I10 control section, 35: F, CC circuit,
:36: Alternative processing circuit, 4: Drive unit, 21: Data track area, 22: Alternative track area, 23: Alternative sector address sector, 24: Bad sector, 25: Alternative sector, 26: Management table area, 27: pointer, 60
: Substituted original address, 61: Data. Agent Boo? Rishichi Jo Yamashita ・``No.

Claims (2)

[Claims] (1) In an information recording/reproducing device having means for dividing an information recording area of a recording medium into a plurality of sectors and recording and/or reproducing each sector individually, and means for recording or reproducing an alternative sector address of a defective sector in one block consisting of a plurality of sectors in the area of one sector or a plurality of sectors in the same block all at once or individually. An information recording and reproducing device comprising: recording substitute sector address information together with data information in a data area of the substitute sector. (2) The information recording and reproducing apparatus according to claim 2, wherein said one block is one track.