JP2714373B2 - Information processing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
An optical disc that performs recording or playback on an optical disc
The present invention relates to an information processing device such as a device. 2. Description of the Related Art In recent years, a large amount of image information such as documents has been generated.
Is photoelectrically converted by two-dimensional optical scanning.
The recorded image information is recorded in the image recording device or
Search and play as needed, hard copy or soft
Image information file device that can reproduce and output
Optical discs have recently been used as image recording devices in
ing. Conventionally, in such an optical disk device,
Is an optical disk that records information in a spiral.
Linearly moved by a linear motor in the radial direction of this optical disc.
Recording or reproduction of information by moving optical head
It is supposed to be. In such an optical disk device, the
By reading the pre-header, the defective area (block)
Judge and record the data on the disc
Has become. This allows you to skip the defective area and record
The recording is made. Also, when recording,
Perform read-after-write on the host computer side,
If reading is not possible even after making corrections, the reading is
Area (block) is determined to be defective and another area
Block as a substitute block, and this substitute block
The recording information for the defective area is recorded.
Then, at the time of the above manufacturing and recording, the defective area and the replacement area
The management information corresponding to
I have come to remember. However, in the above-mentioned optical disk device,
Is the management of defect area and replacement area during recording
Since it is performed on the computer side, processing during recording and playback
Takes time and the processing of the host computer becomes complicated.
There was a disadvantage that it would be. [0006] As described above, the recording
Time, the processing at the time of reproduction takes time, and the host computer
Removes the disadvantage that the processing of
Recording and playback time can be reduced,
By releasing the strike computer from alternative processing,
To provide an information processing device capable of reducing processing
aimed to. SUMMARY OF THE INVENTION [0007] The present invention is directed to an apparatus for reducing initial defects.
Or a replacement area for defective areas when recording information
The information recording medium on which the defect management information
For recording or reproducing information,
Replacement area for initial defects read from information recording media
Initial defect replacement area information that indicates
The recording defect replacement area information indicating the replacement area for
The storage means for storing, when recording information, the recording area is
Based on the initial defect replacement area information in the storage means, the initial defect
Judge whether the area is a fallen area, and if it is an initial defect area,
Information on the replacement area based on the initial defect replacement area information
First alternative processing means for recording information,
By reading the recorded information and correcting the error,
, And this information could not be reproduced correctly
In that case, the recording area is used as a defective area and
Information on the defective area, and record it separately from the defective area.
Recording area correspondence as defect replacement area information during recording
Second alternative processing means stored in storage means, reproduction of information
When the area to be reproduced is the initial defect replacement
Judging from the rear information whether it is an initial defect area,
In the case of an early defect area, the
Alternative processing means for reproducing information for a spare area
At the time of reading the information, the error
-The information is reproduced by making corrections,
When playback is not performed correctly,
The replacement area is read from the defect replacement area information during recording, and
Of reproducing the information for the alternative area read by
It consists of alternative processing means. Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings. FIGS. 1 and 2 show an information processing apparatus according to the present invention.
1 shows a schematic configuration of an optical disk device. Sand
The optical disk (information recording medium) 1 has a radial pitch.
Has a fixed spiral or concentric information storage
The motor 4 is driven to rotate. [0010] As shown in FIG.
For example, a circular shape made of glass or plastics
Gold such as tellurium or bismuth on the surface of the substrate
Metal coating layer, that is, the recording film 1a is coated in a donut shape
Notch near the center of the metal coating layer.
Mari reference position mark 1 ₁ Is provided. FIG. 3 shows the optical disk 1 shown in FIG.
So, the reference position mark 1 ₁ To “0” and “0 to 25”
5 "into 256 sectors. The above optical disk
Variable length information is recorded over multiple blocks on 1
36000 on the optical disc 1
300,000 blocks are being formed on trucks
I have. Note that one block of the optical disc 1 is
For example, the number of sectors is 40 sectors on the inside, and
In this case, there are 20 sectors. The above block
Start position from block number, track number, etc.
Block header A is, for example, when the optical disc 1 is manufactured.
Is recorded. In addition, the above optical disc
Each block in 1 does not end at sector switching position
In this case, a block gap is provided so that each block
Starting from the switching position of the data. The optical disk 1 is shown in FIGS.
As shown, defect management information is recorded on the innermost circumference of the recording film 1a.
And alternative areas, for example
Replacement processing area for 1000 tracks
Recording area) a, which is used by the user in addition to this.
User area (user recording area)
A) b is provided. The alternative processing area a is shown in FIG.
New and old defect management information f is recorded every 4K bytes
Management information area (primary) c, this management information area c
Management information area (sub) d in which the same information as
And alternative blocks (alternative areas) are prepared
It is composed of a block area e,
Indicates an area that cannot be recorded and reproduced. The above fee
Replacement blocks are used during manufacturing or recording.
Allowance for defective block (defective area) in the area b
It is a block used for replacement. The management information area c (, d) is shown in FIG.
As shown, new and old defect management information every 4 KB
(Error management information) f is recorded.
That is, the defect whose defect replacement area information at the time of recording is updated
Management information is recorded. Where the same
Two pieces of information are written, and the reliability of the defect management information is
Have improved. The defect management information f is as shown in FIG.
The initial defect replacement area information g and the recording defect replacement area
And information h. Initial defect replacement area information
g is a defect during manufacturing, that is, recording cannot be performed during manufacturing.
Alternative block for a new block (defective area)
(Alternative area), for example,
Read the header and read the pre-header.
Block number (defective area)
In this case, a memory number (alternative area) is stored. The above described defect replacement area information h at the time of recording is
Defects found during recording, that is,
Replacement for blocks (defect areas) where recording cannot be performed
Information that specifies a replacement block (replacement area).
For example, playback of recorded information is performed (read after
After recording), recording is performed correctly depending on whether the
The block number (recording
Block number (substitute area)
Is stored. That is, actually write
Write to other areas for areas that cannot be known without
This is the information to be specified. 1 and FIG. 2 below the optical disc 1.
As shown in the figure, an optical head for recording and reproducing information
5 is provided. This optical head 5 has a movable part 6
The movable part 6 of the DC linear motor 3 including the fixed part 8
Is fixed to the optical disk 1 by the movement of the movable part 6.
Is moved linearly in the radial direction of
You. 9 is a detector for detecting the position of the movable part 6,
These are movable parts 6 by a so-called superimposed grid detection method.
That is, two types of phases are set according to the moving amount of the optical head 5.
Different (this phase relationship depends on direction) detection signal
Output a signal. On the other hand, the optical head fixed to the linear motor 3
5 is a semiconductor laser, a collimator lens, a beam
Use the optical disk 1 for the splitter, objective lens, and objective lens.
Focus drive coil and objective lens
Tracking drive coil driven in the radial direction of disk 1
The laser beam is focused on the optical disc 1
Focus with a pair of photodetectors to detect
Tracking on point match detector and information track
A pair of photodetectors for detecting
It consists of a docking detector. From each photodetector, a corresponding process
The detection signal is output to the circuit, and each drive circuit
A predetermined voltage is applied to the semiconductor laser and the semiconductor laser. The control circuit 20 is an external device, that is, a host computer.
Computer in response to signals from a computer (not shown)
To control. The linear motor drive circuit 14
The target position signal supplied from the control circuit 20 and the detector 9
Drives the linear motor 3 in accordance with the output signal of
You. On the other hand, the rotary motor drive circuit 10
The speed is determined according to the rotation clock from
The speed control is performed to the set speed from the road 20. H
The focus servo circuit 11 is a detector in the optical head 5.
The objective lens in the optical head 5 according to the detection signal from
The focus pull-in circuit 1
From the state where Focusing is not working by 6
Focusing accurately when changing to a working state
It is made to be performed. The tracking servo circuit 12 is connected to the optical
Optical head according to the detection signal from the detector in the head 5
Beam light emitted through the objective lens in
The objective lens is positioned at the center of the
In the direction. In addition, tracking
The servo circuit 12 temporarily stops the servo operation and
Track jump pulse from the pulse generator 17
Generates a track jump drive pulse according to the objective lens
To move the beam light for one track
Can be done. The pit signal waveform shaping circuit 13
The detection signal from the detector in the optical head 5 is shaped.
Things. The binarization circuit 18 performs the above pit signal waveform
This is for binarizing the waveform shaping signal from the shaping circuit 13.
You. The reference clock generator 41 generates a reference clock.
Is to occur. The variable clock generation circuit 19
The reference clock supplied from the reference clock generator 41
Clock speed information supplied from the control circuit 20
Clock signal (reference signal) of frequency (time width) according to
Is to occur. That is, the position of the optical head 5
Moves in the outward direction of the optical disc 1
The frequency of the clock signal becomes higher (the time width becomes shorter).
ing. The reproduction synchronous clock extraction circuit 23
When a control signal from the control circuit 20 is supplied,
Clock supplied from the variable clock generation circuit 19
The data supplied from the binarization circuit 18 according to the signal.
Is recorded at the beginning of the block header A of each block.
This is to extract the reproduction synchronization clock that is present. The demodulation circuit 22 is adapted to generate the variable clock.
In response to the clock signal from the path 19,
Following the reproduction synchronization clock from the clock extraction circuit 23,
It demodulates the data supplied from the value conversion circuit 18.
You. The serial-parallel conversion circuit 25 includes the demodulation circuit
The reproduction signal supplied from the variable clock generating circuit 22 is
From serial data in response to a clock signal from
The data is converted into parallel data. The header discriminating circuit 26 comprises the demodulating circuit 22
The reproduction signal supplied from the variable clock generation circuit 1
9. Only the header data is valved in response to the clock signal from
Different. The recording / playback header register 29
Access header data supplied from the control circuit 20
Data is stored. The header comparator 28 is provided with the recording / playback header.
The header data stored in the register 29 and the header valve
Whether header data supplied from another circuit 26 matches
Are compared, and when they match, a match signal is output. The parallel-serial conversion circuit 24
Is supplied from a recording / reproducing switching circuit 27 described later.
The reproduced signal from the variable clock generation circuit 19 is
Parallel data to serial data according to lock signal
Is converted to The modulation circuit 21 has the parallel-serial
The data supplied from the conversion circuit 24 is referred to as the variable clock
Modulating according to a clock signal from a generating circuit 19
It is. The laser drive circuit 15
The semiconductor laser in the optical head 5 according to the supplied modulation signal.
By driving and controlling a user (not shown),
Is recorded. The recording / reproducing switching circuit 27 is
According to the reproduction control signal from the control circuit 20, the header ratio
When the match signal is supplied from the comparator 28, that is, when the header data
The reproduction data following the data is stored in the recording / reproduction data buffer 30.
Output. The recording / reproducing switching circuit 27
Is controlled according to a recording control signal from the control circuit 20.
The header data supplied from the recording / reproducing data buffer 30
Data that follows the data
Output to the road 24. The recording / reproducing data buffer 30 is
Stores reproduction data from the recording / reproduction switching circuit 27
And the recording data from the recording / reproducing data transfer circuit 32.
Is stored. Error correction code addition / error correction
The circuit 31 is stored in the recording / reproduction data buffer 30.
Errors in recorded data, for example, due to the Reed-Solomon method
A correction code is added, and the recording / playback data buffer
30 for correcting the error of the reproduction data stored in
You. The above-mentioned error correction code addition / error correction circuit 3
1 is a weak correction capability for read-after-write during recording
Strict checks are performed by making corrections in
At the time of birth, correction was made with normal error correction ability
I have. The above weak correction ability is defined as an error correction capability.
The size of the error is usually smaller than when playing
It is. The above-mentioned error correction code addition / error correction circuit 31
Correction Method Using Cross Interlibrary in Japan
Is described in detail in Japanese Patent Application No. 59-15501.
Therefore, the description is omitted here. The recording / reproducing data transfer circuit 32
Reproduction data supplied from the recording / reproduction data buffer 30
Through the external interface circuit 33.
Computer and transfer it to the host computer (not shown).
Supplied from the computer via the external interface circuit 33
The recording data to be recorded is stored in the recording / reproducing data buffer 30.
Output. The ROM 42 as a storage circuit is
As shown in FIG. 9, the optical disc 1
Clock speed information and one block at this clock speed
Number of sectors in a track and within 256 tracks at the above speed
The number of the first block of the block and the starting sector of that block
Are stored in the corresponding conversion table. Ma
In addition, the control circuit 20 is provided from the host computer.
Recording supplied via the external interface circuit 33
Alternatively, the block at the playback position,
When a block number is supplied, the
The access position is read from the ROM 42 and the clock signal
Linear motor 3 and optical head with frequency kept constant
5 is performed. The above clock
For reading (calculation) of click speed information and access position,
This is described in detail in Japanese Patent Application No. 59-32825.
It is omitted here. The control circuit 20 controls the optical data to the device.
At the time of setting the disk 1 (at the time of opening), management of the optical disk 1
Latest defect management information read from information area c (, d)
Is stored in the memory buffer 43.
When removing the optical disc 1 from the
Is stored in the memory buffer 43 when the defect management information is updated.
The stored defect management information is updated as the latest information
In the first unrecorded area of the management information areas c and d of the disk 1
It is to be recorded. The memory buffer 43 stores the minimum data size.
A capacity of an integral multiple of the recording unit, for example, the same as one block 4
K bytes. As shown in FIG.
Initial defect replacement area information as information and defect replacement during recording
The area information is stored. Next, the operation in such a configuration will be described.
I will tell. First, the optical disk 1 is set in this apparatus (e.g.
At the time of open). Then, the control circuit 20 firstly sets the motor 4
To rotate the optical disk 1 at a constant speed. About
Thus, the control circuit 20 checks the block corresponding to the management information area c.
Clock speed information and access position according to clock number
That is, the track number and the starting sector number are
Read from As a result, the control circuit 20 controls the clock
The speed information is output to the variable clock generation circuit 19. Do
And the variable clock generation circuit 19 includes the reference clock generator 4
Supplied from the control circuit 20 using the reference clock from 1
Frequency (time width) according to the clock speed information
A lock signal is generated, and the modulation circuit 21, demodulation circuit 22,
Raw synchronous clock extraction circuit 23, parallel-serial conversion
Circuit 24, serial-parallel conversion circuit 25, header valve
It is supplied to another circuit 26. Also, the control circuit is determined by the track number.
20 converts the track number into a scale value, and
Kale value and the position detected by the output of the position detector 9
Drive the linear motor driver 14 until
Thus, the optical head 5 is moved. Then, optics
When the movement of the head 5 is completed, the detector in the optical head 5
Is shaped by the waveform shaping circuit 13.
The signal is binarized by the binarization circuit 18 and demodulated by the demodulation circuit 22 and reproduced.
Is supplied to the initial clock extracting circuit 23. Then, playback
The initial clock extraction circuit 23
Playback synchronization clock recorded at the beginning of the header A
Is extracted and output to the demodulation circuit 22. As a result, the demodulation circuit 22 outputs the reproduction synchronization clock.
The lock and the read supplied from the binarization circuit
The demodulated signal is demodulated, and the serial-parallel conversion circuit 25
Output to the recording / reproduction switching circuit 27 via the
At the same time, is supplied to the header discrimination circuit 26. And the header valve
The separate circuit 26 discriminates only the header data and controls the control circuit 20.
And to the header comparator 28. Thus, the control circuit 20 sends the header data
The track to which the optical head 5 corresponds from the data,
Compare this track with the target track. This comparison
As a result, the control circuit 20 is separated by several tens of tracks or more.
In this case, the optical head 5 is moved again by the linear motor 3.
Move, and if it is within several tens of tracks,
The optical head 5 is further moved by the number of corresponding tracks. Then, the optical head 5 is placed on the target track.
When corresponding, the header discrimination circuit 26 only outputs the header data.
The output is discriminated and output to the header comparator 28. At this time,
To the block corresponding to the objective, that is, the management information area c
Data is stored in the header register by the control circuit 20 in advance.
The header of the header register 29 is stored in the
The data is supplied to a header comparator 28. This
The header comparator 28 determines that the header data matches
Output a match signal to the recording / reproduction switching circuit 27
I do. Then, the recording / reproducing switching circuit 27 is
The playback data supplied following the
Output to the data buffer 30. The reproduction data of the recording / reproduction data buffer 30 is
The error is corrected by the error correction code addition / error correction circuit 31.
After the correction is performed, it is supplied to the control circuit 20. this
Causes defects in the management information areas c and d every 4 KB.
The management information f is sequentially supplied to the control circuit 20. Then, the control circuit 20 controls the management information area.
The latest defect management information f is read from c and d, and
It is stored in the file 43. Read out the latest defect management information f
The defect management information in front of five consecutive free areas
The report f is read as the latest information. Ma
The latest defective pipe read from the management information areas c and d.
Confirm data by comparing physical information f
I have. Next, as described above, the latest defect management information
Information is stored in the memory buffer 43,
External computer from a computer (not shown)
A block that performs recording (access) through the chair circuit 33
It is assumed that the block number has been supplied to the control circuit 20. Then
The control circuit 20 determines that the block number is
3 is included in the initial defect replacement area information g,
Check whether the area is an initial defect area. This check
If it is not the initial defect area as a result of the
This block is used to record the block number from the data. Ma
In addition, as a result of the above check, in the case of an initial defect area,
The replacement block read out is recorded by the defect replacement area information g.
This is a block to be recorded (first alternative processing means). The control circuit 20 converts the ROM 42
The target block (host computer)
Block number from data or alternative block)
Calculate rack, start sector and clock speed information
You. Then, the control circuit 20 outputs the clock speed information.
Output to the variable clock generation circuit 19. This allows
The modified clock generation circuit 19 is provided from the reference clock generator 41.
Supplied from the control circuit 20 using the reference clock of
Generates a clock signal with a frequency corresponding to the clock speed information
The modulation circuit 21, the demodulation circuit 22, and the reproduction synchronization clock extraction
Output circuit 23, parallel-serial conversion circuit 24, serial
To the parallel-to-parallel conversion circuit 25 and the header discrimination circuit 26
I do. Also, the control circuit
Reference numeral 20 denotes a case where the above-mentioned alternative processing area is accessed.
In the same way, the optical head is added to the track of the target block.
The beam light of the node 5 is made to correspond. At this time, the recorded data is stored in the host computer.
The external interface circuit 33 and the recording / reproduction data
Record / reproduction data buffer 30 via the data transfer circuit 32
Is stored in And, to the block of the above-mentioned target block,
A header match signal is sent from the header comparator 28 to the recording / reproduction switch.
Recording and reproduction switching when supplied to the
The recording data of the recording / reproduction data buffer 30 is
The data is supplied to the parallel-serial conversion circuit 24. This
To serial data by the parallel-serial conversion circuit 24
The converted recording data is modulated by the modulation circuit 21.
It is supplied to the laser drive circuit 15. This allows the laser
The drive circuit 15 controls the optical head according to the supplied modulation signal.
Drive the semiconductor laser (not shown) in the diode 5
Thus, data is recorded. After this recording, read-after-write is performed.
That is, the block on which the recording has been performed is read. You
That is, the control circuit 20 controls the eye as in the case of the recording.
Beam of the optical head 5 on the track of the target block
Correspond. Then, the block of the target block is
A header match signal is sent from the header comparator 28 to the recording / reproduction switch.
Recording and reproduction switching when supplied to the
The circuit 27 outputs the signal from the serial-parallel conversion circuit 25.
The reproduction data is supplied to the recording / reproduction data buffer 30.
You. The reproduction stored in the recording / reproduction data buffer 30
The data is weak by the error correction code addition / error correction circuit 31.
Error correction is performed by the correction capability. As a result,
If no error (defect) occurs, the control circuit 20 records
The process ends. As a result, a correction error (defect) occurs.
In the event of a failure, the control circuit 20 stores
The next alternative block to be used is determined.
The above-mentioned recording data is recorded again on the disk. Made this record
After that, read-after-write is performed as above,
If no (defect) has occurred, the control circuit 20 sets the defect
Replacement block corresponding to lock in memory buffer 43
Update the defect replacement area information when recording
Record information of rebuffer 43 in management information areas c and d
I do. If a correction error (defect) occurs, the control
Road 20 re-records the above recording data in another alternative block
Thereafter, the same operation as described above is performed (the second alternative processing procedure).
Stage). As described above, when checking the recording data,
If a defect is found more than once, the defect management information
Information can be recorded. When data is recorded in another block,
This can be done in the same manner as described above. In this case,
The closer the block position is to the outer peripheral side,
Data recording is performed with the lock signal frequency increased.
Will be The recording operation is shown in FIG.
Swelling. A host computer (not shown)
Playback through the external interface circuit 33
The (accessed) block number is supplied to the control circuit 20.
Suppose that Then, the control circuit 20 determines the block number
Is included in the initial defect replacement area information g of the memory buffer 43.
Check whether it is included, that is, if it is an initial defect area.
Click. As a result of this check, it is not an initial defect area
The block number from the host computer.
Block. Also, as a result of the above check,
In the case of a fallen area, read using the initial defect replacement area information g
Block to be played back as the block to be reproduced (third block
Processing means). Then, as in the case of the above recording, the
Lock (block number from host computer, there is
Or the clock speed information corresponding to the alternative block)
Clock signal of a frequency corresponding to this clock speed information.
Signal, a modulation circuit 21, a demodulation circuit 22, a reproduction synchronization clock
Extraction circuit 23, parallel-serial conversion circuit 24, serial
Supplied to the al-parallel conversion circuit 25 and the header discrimination circuit 26.
Pay. As in the case of the above recording, the target
Corresponds to the laser beam of the optical head 5 for the track of the lock
Let it. Then, the block of the target block is
A header match signal is sent from the header comparator 28 to the recording / reproduction switch.
Recording and reproduction switching when supplied to the
The circuit 27 outputs the signal from the serial-parallel conversion circuit 25.
The reproduction data is supplied to the recording / reproduction data buffer 30.
You. The reproduction stored in the recording / reproduction data buffer 30
The data is passed through an error correction code addition / error correction circuit 31.
Error correction is performed by the usual error correction capability. This result
As a result, if no correction error (defect) occurs, the control circuit
Reference numeral 20 denotes a recording / reproducing data transfer circuit 33
The host computer via the external interface circuit 33
And the reproduction process ends. As a result, a correction error (defect) occurs.
In the case where the data is stored in the memory buffer 43,
Corresponding to the defective block from the defective area
Read the replacement block and record data of the replacement block
With the normal error correction capability
Regenerate (fourth alternative processing means). Then, the control circuit 20 sets the substitute block
The reproduction data from the recording / reproduction data transfer circuit 33 and
The host computer via the external interface circuit 33
And the reproduction process ends. When reproducing data of another block,
This can be done in the same manner as described above. In this case,
The closer the block position is to the outer peripheral side,
Data is reproduced with the frequency of the lock signal raised.
Will be The operation at the time of reproduction is shown in FIG.
Swelling. When removing the optical disk 1 (claw)
Or when the defect management information is updated,
The path 20 stores the defect management stored in the memory buffer 43.
The management information area of the optical disc 1 using the information as the latest information
Recording is performed in the first unrecorded area of c and d. As described above, the optical disk device itself can
Initial or recording to ensure the reliability of recorded data
Alternative processing for defective areas
Therefore, the processing time during recording and playback can be reduced.
To release the host computer from alternative processing
Thus, the processing can be reduced. The data defect check is performed at the time of recording.
We weaken the correction ability (1 byte correction) and check strictly,
Improve reliability during recording. And when playing
Check and play back with level (3-byte correction) correction ability
Only the data that has been subjected to the substitute processing is reproduced
You. As a result, even if the weak correction ability becomes defective,
For areas that can be corrected with normal level correction ability,
Do not perform substitution processing. For this reason, the actions required for
Access times can be reduced and access speed improved.
It is what is done. Therefore, do not lose reliability.
In addition, processing efficiency can be improved. Also, when recording and reproducing data,
Normally, the initial defect replacement area stored in the memory buffer
Information, and perform alternative processing only for the relevant area.
U. Also, check the read-after-write during data recording.
You can find defective areas with the
Defect replacement area during recording only when no area
Substitute processing for a defect is performed using the information part. did
As a result, alternative processing procedures for initial defects and recording defects
And alternative processing procedures for each defect state.
(The nature and characteristics of the defect)
The alternative processing can function efficiently. Further, the recording error in the memory buffer
The replacement area information is stored every time the replacement process is performed during recording.
And each time the optical disc is closed,
Initial defect replacement area information of memory buffer and recording defect
4K byte defect management information consisting of replacement area information
Is the management information in the alternative processing area on the optical disc
It is recorded in the area. In this case,
Initial defect replacement area information and the latest recording defect replacement area
Each information is specially processed because the information is combined.
Recording on an optical disc without the need for The defect management information is controlled by the optical disk device.
Under the influence of the host computer
It is possible to prevent the management information from being destroyed. In addition, defect management
Since the optical disk drive can do everything,
The recording format allows compatibility with others. Further, management for initial defects and recording defects
Alternative area information as information is one unit
Therefore, the speed of the internal processing can be improved. In the above embodiment, the defect area
Although the case where alternative processing is performed has been described,
Not limited to, commands from the host computer
It may be possible to select whether or not to perform the replacement process. This
In this case, compatibility with the conventional device can be maintained. In addition, information
The case where an optical disk is used as a recording medium has been described.
However, not limited to this, magnetic disks, floppy disks
And a laser card. As described in detail above, according to the present invention,
For example, it is possible to reduce the processing time when recording and reproducing information.
Yes, and release the host computer from alternative processing
Provides an information processing device that can reduce processing.
Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram schematically showing a configuration of an optical disk device of the present invention. FIG. 2 is a diagram schematically showing a configuration of an optical disk device of the present invention. FIG. 3 is a plan view showing a configuration of the optical disc. FIG. 4 is a plan view showing the configuration of the optical disc. FIG. 5 is a plan view for explaining an alternative processing area and a user area. FIG. 6 is a plan view for explaining a configuration of an alternative processing area. FIG. 7 is a diagram showing a recording example of a management information area. FIG. 8 is a diagram for explaining a recording example of defect management information. FIG. 9 is a diagram showing a storage example of a conversion table. FIG. 10 is a diagram illustrating a storage example of a memory buffer. FIG. 11 is a flowchart illustrating a recording operation. FIG. 12 is a flowchart illustrating a reproducing operation. [Description of Signs] 1 ... optical disk (information recording medium) 1a ... recording film a ... alternative processing area (alternative processing recording area) b ... user area (user recording area) c, d ... management information area e ... alternative block Area f: Defect management information g: Initial defect replacement area information h: Recording defect replacement area information 20: Control circuit 31: Error correction code addition / error correction circuit 43: Memory buffer (storage means)

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location G11B 20/12 9295-5D G11B 20/12 20/18 550 20/18 550F 552 552A 572C 572C 572F 574 574H

Claims (1)

(57) [Claims] An information processing apparatus that records or reproduces information on or from an information recording medium that stores defect management information indicating an initial defect or a replacement area for a defect area at the time of recording information. Storage means for storing initial defect replacement area information indicating a replacement area for a defect and recording defect replacement area information indicating a replacement area for a defect at the time of recording information; The initial defect replacement area information is used to determine whether the area is an initial defect area, and in the case of an initial defect area, information is recorded in the replacement area based on the initial defect replacement area information.
After the information is recorded, the information is reproduced by reading out the recorded information and performing error correction. When the information cannot be reproduced correctly, the recording area is regarded as a defective area and another Second alternative processing means for recording information in the area and storing the correspondence between the defective area and another recording area in the storage means as defect alternative area information during recording; and an area to be reproduced when reproducing the information. Determining whether the area is an initial defect area based on the initial defect alternative area information in the storage means, and in the case of the initial defect area, reproducing the information for the alternative area based on the initial defect alternative area information; , When reproducing the information,
Information is reproduced by performing error correction, and when this information cannot be reproduced correctly, an alternative area for the recording area is read from the defective area replacement information at the time of recording, and information is reproduced for the read alternative area. An information processing apparatus comprising: a fourth alternative processing unit.