JP2746873B2 - Information processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention provides, for example, an optical disc for recording or reproducing information.
For information processing devices such as optical disc devices
Related. (Prior Art) In recent years, image information such as documents generated in
Photoelectrically converted by optical scanning, and this photoelectrically converted image information
On an image recording device, or if necessary
Search, play, hard copy or soft copy
Image recording in an image information file device capable of reproducing and outputting
An optical disk has recently been used as a recording device. Conventionally, in such an optical disk device, a spy
An optical disk that records information in a spiral shape is used.
Optics linearly moved by a linear motor in the radial direction of the disk
The head records or reproduces information
Has become. In such an optical disc device, a pre-header
The defective area (block) is determined by reading the
Data is recorded on the disk.
You. As a result, the recording is performed while skipping the defective area.
It is supposed to be. Also, when recording,
Perform read-after-write on the computer side and make corrections.
If reading is not possible even after reading
The rear (block) is determined to be a defective area and another block
As a substitute block, and the defective block
A to record the information to be recorded. And
Correspondence between defective area and substitute area during manufacturing and recording
The management information is stored in separate memory buffers.
Swelling. However, in the above-mentioned optical disk device, when recording,
Management of defective areas and alternative areas
Processing is performed on the
The disadvantage is that the processing of the computer becomes complicated.
Was. (Problems to be Solved by the Invention) As described above, processing at the time of recording and reproduction takes time.
Disadvantage that the processing of the host computer becomes complicated
To reduce the processing time when recording and reproducing information.
The host computer can be shortened
Information that can reduce processing by opening
An information processing device is provided. [Structure of the Invention] (Means for Solving the Problems) The information processing apparatus according to the present invention is capable of detecting a defective area at an initial stage.
Initial defect replacement area information indicating the replacement area to be recorded and when recording
Defect Replacement During Recording Showing Replacement Area for Defect Area
Defects in which defect management information consisting of area information is recorded
On the information recording medium on which the defect management information recording area is recorded.
In the case of recording or reproducing information,
Recorded in the defect management information recording area of the information recording medium.
Initial defect replacement area information and defect replacement area during recording
Reading means for reading defect management information comprising information;
Initial defect replacement area information read by the reading means of
Defect management information consisting of defect replacement area information during recording is recorded.
Storage means for storing in a storage medium, and recording when information is recorded
The area corresponds to the defect management information stored in the storage medium.
Judge whether the area is defective or not.
Record information for alternative areas using defect management information
First alternative processing means, after recording the information,
By reading and performing error correction with the first correction capability,
The information is reproduced, and a correction error occurs and the reproduction can be performed correctly.
If not, the recording area is regarded as a defective area and
Record information on the rear area, and
Stores the correspondence with another recording area as defect management information
A second method of additionally storing the defect replacement area information during recording on the medium
Alternative processing means and record information in the area to be reproduced when reproducing information
The information that has been read out is read out by the second alternative processing means.
Error correction with a second correction capability greater than the first correction capability
Reproducing means for reproducing the information by performing the correction;
When playing back, the area to be played back is stored in the storage medium.
Judge whether the area is a defect area based on the defect management information
In the case of a rear area,
Alternative processing of reproducing information by the reproducing means
Means for removing said recording medium or said defective tube
When additional information is stored in the storage medium,
The defect management information is stored in the defect management information recording
And recording means for recording the information in the rear. (Operation) The present invention provides an alternative area for an initial defective area.
Indicates the initial defect replacement area information and the defective area during recording.
Defect replacement area information during recording indicating replacement area for
Defect management information record that records defect management information consisting of
Information is recorded on the information recording medium on which the area is recorded.
For recording or reproduction, the information recording medium
Initial defects recorded in the body defect management information recording area
Consists of replacement area information and recording defect replacement area information
The defect management information is read, and the read initial defect replacement area is read.
Defect management consisting of information and defect replacement area information during recording
Information is stored in a storage medium, and when recording information, the area to be recorded is
Is based on the defect management information stored in the storage medium.
Judge whether it is a defective area, and if it is a defective area,
Record information in the alternative area using
After recording the information, the recorded information is read out and read with the first correction capability.
Information is reproduced by performing error correction,
Error occurs and playback cannot be performed correctly,
Record information in another area as a defective area.
And the correspondence between the defective area and another recording area
The defect replacement area at the time of recording of the above storage medium is used as defect management information.
The information is additionally stored in the information, and when the information is reproduced,
Reading the recorded information to read the second alternative processing means
Error in the second correction capability that is greater than the first correction capability in
-Reproduction means that reproduces information by making corrections
When reproducing information, the area to be reproduced is recorded on the storage medium.
Judge whether the area is a defect area based on the stored defect management information
In the case of a defective area, the alternative
Reproduction of information to the rear is performed by the above-mentioned reproduction means.
When removing the recording medium or adding the defect management information
At the time of additional storage, the defect management stored in the storage medium
Information is recorded in the defect management information recording area of the recording medium
It is something to do. Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
I will tell. FIG. 2 shows an information processing apparatus of the present invention, that is, an optical disk drive.
1 shows a schematic configuration of the device. That is, the optical disk
(Information recording medium) 1 is a spy with a constant radial pitch.
The motor 4 has a radial or concentric information storage unit.
It is driven to rotate more. The optical disc 1 is, for example, as shown in FIG.
Formed circularly with glass or plastics
Metal coating layer of tellurium or bismuth on substrate surface
That is, the recording film 1a is coated in a donut shape.
Notch near the center of the metal coating layer
Position mark 1 ₁ Is provided. On the optical disc 1, as shown in FIG.
Reference position mark 1 ₁ With 0 as 256
Kuta is divided. Variable length on the optical disc 1
Information is recorded over multiple blocks.
36,000 tracks and 300,000 blocks on optical disc 1
A lock is formed. Note that a sector of one block on the optical disc 1 is
The number will be, for example, 40 sectors inside and 20 sectors outside
It is supposed to be. At the start of the above block
Is a block consisting of a block number, track number, etc.
The header A is recorded, for example, when the optical disc 1 is manufactured.
It has become. Further, each of the optical discs 1
If the block does not end at the sector switch position,
A gap is provided, and each block must be a sector switching position.
Starts with. The optical disk 1 is shown in FIGS. 4 and 5.
As described above, when the defect management information is recorded on the innermost circumference of the recording film 1a,
Both are composed of alternative areas, for example, 1000 trucks
Area for alternative processing (recording area for alternative processing) a
Is provided, and other recording areas used by the user
A user area (user recording area) b is provided as an area
Have been. As shown in FIG. 6, the alternative processing area a is 4K
Management for recording new and old defect management information f for each byte
Information area (correct) c, the same information as this management information area c
Information area (sub) d where information is recorded,
For alternative blocks with locks (alternate areas)
It is composed of area e, and records and
And cannot be played. Alternative block above
Means the user area b at the time of manufacture or recording
Used for replacement of defective blocks (defect areas) within
It is a block. The management information area c (, d) is as shown in FIG.
New and old defect management information (error management
(Information f) is recorded. That is,
Defect management information with updated defect replacement area information is recorded.
It is to be recorded. Here, two pieces of the same information
And improve the reliability of the defect management information.
You. The defect management information f is, as shown in FIG.
Defect replacement area information g and recording defect replacement area information h
It has become. The initial defect replacement area information g is
Manufacturing defects, ie blocks that cannot be recorded during manufacturing
(Defective area)
A), for example, reading of pre-header
Block that cannot read the pre-header.
Block number (defect area)
Replacement area). The above-described recording defect replacement area information h indicates that the recording was performed.
The defect found at the time, that is, when recording,
Alternative block for missing block (defective area)
Information that specifies the location (alternative area)
Of the read information (after read-after-write)
To determine whether recording was performed correctly based on whether or not playback was successful
Block number (defect area) that cannot be recorded correctly
Memorize the alternative block number (alternative area) for
Is what it is. In other words, you have to actually write
Information that specifies writing to another area for an area that does not exist
Information. Below the optical disk 1, as shown in FIG.
An optical head 5 for recording and reproducing information is provided.
ing. The optical head 5 includes a movable section 6 and a fixed section 8.
Fixed to the movable part 6 of the DC linear motor 3 to be formed.
The movable portion 6 moves the optical disc 1 in the radial direction.
It is moved linearly in the directions a and b shown in FIG. 9 is the movable part
6 which are so-called heavy detectors.
The movable part 6, that is, the optical head
The two types of phases are different (this phase
(The relationship depends on the direction.) A detection signal is output. On the other hand, the optical head 5 fixed to the linear motor 3
Semiconductor laser, collimator lens, beam splitter,
The objective lens is driven in the direction of the optical disc 1.
Focus drive coil and objective lens
Tracking drive coil driven in the radial direction, optical disc
Check whether the laser beam is focused on
Focus-match detector with a pair of emitting photodetectors
And tracking on information tracks
Detection with a pair of photodetectors
It consists of a container. Each photo detector detects the corresponding processing circuit
A signal is output, and each drive coil and each drive coil and
A predetermined voltage is applied to the semiconductor laser. The control circuit 20 is an external device, that is, a host computer (see FIG.
(Not shown) to control the entire device in response to signals from
It is. The linear motor drive circuit 14 is
According to the target position signal and the output signal of the detector 9
To drive the linear motor 3. On the other hand, the rotation motor drive circuit 10
The speed is determined according to the lock, and the setting from the control circuit 20 is performed.
Speed control is performed at a constant speed. Focus servo
The circuit 11 converts a detection signal from a detector in the optical head 5 into a signal.
The focus of the objective lens in the optical head 5 is adjusted accordingly.
The focus pull-in circuit 16
Change from non-working to working
Focusing is now performed correctly when performing
ing. The tracking servo circuit 12 detects a signal in the optical head 5.
The objective lens in the optical head 5 according to the detection signal from the output device
Beam emitted through the center of the truck
Move the objective lens in the radial direction of the optical disc 1
It is a thing to tighten. Also, the tracking servo circuit 12
Pause servo operation and generate track jump pulse
Track jump in response to the track jump pulse from road 17.
A pump drive pulse is issued to move the objective lens,
It can move the beam light for the rack.
You. The pit signal waveform shaping circuit 13 is provided with the optical head
5 for shaping the waveform of the detection signal from the detector in 5.
You. The binarization circuit 18 is provided by the pit signal waveform shaping circuit 13.
These waveform shaping signals are binarized. The reference clock generator 41 generates a reference clock.
It is. The variable clock generation circuit 19
The reference clock supplied from the clock generator 41
Frequency (hour) according to clock speed information supplied from 20
Clock signal (reference signal)
You. That is, the position of the optical head 5 is outside the optical disc 1.
The frequency of the clock signal is
Higher (shorter time). The reproduction synchronous clock extraction circuit 23 is provided with the control circuit
When the control signal from 20 is supplied, the variable clock
In response to the clock signal supplied from the clock generation circuit 19.
From the data supplied from the binarization circuit 18, each block
The playback synchronization clock recorded at the beginning of block header A
This is to extract the lock. The demodulation circuit 22 receives the clock from the variable clock generation circuit 19.
According to the lock signal, the reproduction synchronous clock extraction circuit 23
From the binarization circuit 18 following the reproduction synchronization clock from
It demodulates the supplied data. Serial-para
The rel conversion circuit 25 performs the reproduction supplied from the demodulation circuit 22.
The signal is the clock signal from the variable clock generation circuit 19
From serial data to parallel data according to
Things. The header discrimination circuit 26 is supplied from the demodulation circuit 22.
The reproduced signal is output from the clock from the variable clock generation circuit 19.
Only the header data is discriminated according to the signal.
You. The recording / playback header register 29
Stores supplied header data to be accessed
It is. The header comparator 28 stores the data in the recording / playback header register 29.
The stored header data is supplied from the header discrimination circuit 26.
Compare if the header data supplied matches
At this time, it outputs a coincidence signal. The parallel-serial conversion circuit 24 is described later.
The playback signal supplied from the recording / playback switching circuit 27 is
According to the clock signal from the variable clock generation circuit 19
It converts parallel data to serial data.
You. The modulation circuit 21 is the same as the parallel-serial conversion circuit 24 described above.
Data supplied from the variable clock generation circuit 19
Is modulated according to the clock signal. Laser drive
The driving circuit 15 converts the modulation signal supplied from the modulation circuit 21
The semiconductor laser (not shown) in the optical head 5 is
Data recording is performed by controlling the drive.
You. The recording / reproducing switching circuit 27 is provided from the control circuit 20.
From the header comparator 28 in accordance with the playback control signal
When a signal is supplied, that is, the playback data following the header data
Data to the recording / playback data buffer 30.
You. Further, the recording / reproducing switching circuit 27 controls the control
According to the recording control signal from the circuit 20, the recording / reproducing data
Recording data following the header data supplied from the data buffer 30.
Data to the parallel / serial conversion circuit 24.
It is. The recording / reproducing data buffer 30 stores the recording / reproducing switch.
The playback data from the switching circuit 27 is stored and
It stores recorded data from the raw data transfer circuit 32.
is there. The error correction code addition / error correction circuit 31
Check the recorded data stored in the recording / playback data buffer 30.
For example, add error correction code by Reed-Solomon method,
Also, the reproduction data stored in the recording / reproduction data buffer 30 is described.
Data error correction. The error correction code addition / error correction circuit 31
In the case of read-after-write, the weak correction capability (first correction
Strict checks by making corrections with
Normal error correction capability during playback (second correction capability)
To make corrections. The above weak correction ability is the size of the error that can be corrected.
This is usually smaller than when reproducing.
The error correction code addition / error correction circuit 31
For the correction method using Sinter Liv, refer to Japanese Patent Application
Since it is described in detail in -15501, it is omitted here. The recording / reproducing data transfer circuit 32 stores the recording / reproducing data.
Playback data supplied from the
The host computer (shown in FIG.
No) and transfer the external
The recording data supplied via the interface circuit 33 is
The data is output to the recording / reproducing data buffer 30. The ROM 42 as a storage circuit is provided as shown in FIG.
In addition, the clock speed information of the optical disc 1 every 256 tracks
And the number of sectors in one block at this clock speed
And the first block in the 256 track at the above speed
Conversion number corresponding to the starting sector number of the block.
Table is stored. Further, the control circuit 20 is connected to the host computer.
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 frequency of the clock signal is read.
With the number constant, the linear motor 3 and the optical head 5
Access. Above clock speed
Patent application for reading (calculation) of degree information and access position
It is omitted here because it is described in detail in No. 59-32825.
You. Further, the control circuit 20 sets the optical disc 1 in the apparatus.
At regular time (at the time of opening), the management information area c of the optical disc 1
The latest defect management information read from (, d)
Stored in Hue 43, and from the device to the optical disk
1 (when closed) or defect management information
Is updated, the data stored in the memory buffer 43 is
Management information of the optical disc 1 using the defect management information as the latest information
This is to be recorded in the first unrecorded area of areas c and d.
You. The memory buffer 43 adjusts the minimum recording unit of data.
Several times the capacity, for example 4K bytes, the same as one block
As shown in FIG. 10, the initial
Defect replacement area information and recording defect replacement area information
It is to be remembered. Next, the operation in such a configuration will be described. Ma
Set the optical disk 1 to this device (open
Time). Then, the control circuit 20 first drives the motor 4
Then, the optical disk 1 is rotated at a constant speed. Then control
The circuit 20 determines the block number corresponding to the management information area c.
Clock speed information and access position or traffic
The read block number and the start sector number are read from the ROM 42. As a result, the control circuit 20 enables the clock speed information.
Output to the variable clock generation circuit 19. Then, the variable clock
The clock generation circuit 19 receives the reference clock from the reference clock generator 41.
Clock speed information supplied from the control circuit 20 using the clock.
Generates a clock signal of the frequency (time width) according to the report,
Modulation circuit 21, demodulation circuit 22, reproduction synchronous clock extraction circuit 2
3, parallel-serial conversion circuit 24, serial-parallel
To a header conversion circuit 25 and a header discrimination circuit 26. Also, the control circuit 20 uses the track number to
Convert the rack number to a scale value, and
Until the position detected by the output of the position detector 9 matches.
By driving the linear motor driver 14 with the
The head 5 is moved. Then, the movement of the optical head 5
Is completed, a detection signal from a detector in the optical head 5 is output.
Is waveform-shaped by the waveform shaping circuit 13 and binarized by the binarization circuit 18.
The digitized demodulation circuit 22 and the reproduction synchronous clock extraction circuit 23
Supplied to Then, the reproduction synchronous clock extraction circuit 23
Is written at the beginning of block header A from the supplied data.
The recorded playback synchronization clock is extracted and sent to the demodulation circuit 22.
Output. As a result, the demodulation circuit 22 outputs
And the read signal supplied from the binarization circuit 18 is demodulated.
And a recording / reproduction switch via the serial-parallel conversion circuit 25.
Output to the switching circuit 27 and header discrimination circuit
Supply 26. Then, the header discrimination circuit 26
Data to the control circuit 20 and header comparator 28.
Power. As a result, the control circuit 20 converts the header data to the optical data.
The track to which the head 5 corresponds is determined, and this track
And the desired track. As a result of this comparison, the control
If the circuit 20 is separated by more than several tens of tracks, the linear
The optical head 5 is moved again by the motor 3 and several tens of tracks
The optical head 5 by track jump
Move by the number of corresponding tracks. Then, the optical head 5 corresponds to the target track.
At this time, the header discrimination circuit 26 discriminates only the header data and
It is output to the header comparator 28. Also, at this time,
The header data of the block corresponding to the management information area c is
Stored in the header register 29 in advance by the control circuit 20.
The header data of this header register 29 is
Is supplied to the vessel 28. As a result, the header comparator 28
When the header data matches, a match signal is recorded and replayed.
Output to the raw switching circuit 27. Then, the recording / playback
The switching circuit 27 is supplied following the header data.
Output the playback data to the recording / playback data buffer 30 (read
Means). The reproduction data in the recording / reproduction data buffer 30 is corrected.
Error correction is performed by the correct code addition / error correction circuit 31.
After that, it is supplied to the control circuit 20. This allows management information
Defect management information f for each 4k bytes of areas c and d is sequentially controlled
It is supplied to the control circuit 20. Then, the control circuit 20 sends the latest information from the management information areas c and d.
Read out the defect management information f and store it in the memory buffer 43.
(Storage means). Read out the latest defect management information f
Is the defect management information in front of five consecutive free areas
f is read as the latest information. Also,
The latest defect management information read from the management information areas c and d
The data is confirmed by comparing reports f
You. Next, the latest defect management information is stored in the memory as described above.
In the state stored in the buffer 43, the host computer
External interface circuit 33 from the data (not shown)
Block number to record (access) via
It is assumed that the signal is supplied to the circuit 20. Then, the control circuit 20
The block number indicates the initial defect replacement area of the memory buffer 43.
Information g, that is, the initial defect area
Check if As a result of this check, initial defect
If not, the block number from the host computer
It is a block to record the number. In addition, the above check
As a result, in the case of the initial defect area, the initial defect replacement area information g
Block to record the replacement block read by
(First alternative processing means). Then, the control circuit 20 uses the conversion table of the ROM 42
Target block (block from host computer)
Track number, or alternate block), start section
Data and clock speed information. Then, control times
The path 20 uses the clock speed information as a variable clock generation circuit.
Output to 19. Thereby, the variable clock generation circuit 19
Control using the reference clock from the reference clock generator 41
The frequency corresponding to the clock speed information supplied from the control circuit 20
Generating clock signals, modulating circuit 21, demodulating circuit 22,
Reproduction synchronous clock extraction circuit 23, parallel-serial conversion
Circuit 24, serial-parallel conversion circuit 25, header discrimination
Supply to road 26. In addition, the control circuit 20 uses the track number to
Operates in the same way as when accessing the alternative processing area
The beam of the optical head 5 on the track of the target block.
Make light correspond. At this time, the recorded data is
Interface circuit 33 and recording / reproducing data transfer circuit
32 and stored in the recording / playback data buffer 30.
You. Then, match the block header of the target block
The signal is transferred from the header comparator 28 to the recording / reproduction switching circuit 27.
Is supplied by the recording / reproducing switching circuit 27.
The recording data in the recording / reproduction data buffer 30 is
The data is supplied to the analog conversion circuit 24. This parallel-serial
The recording data converted to serial data by the conversion circuit 24
Modulation is performed by the modulation circuit 21 and supplied to the laser drive circuit 15.
It is. As a result, the laser drive circuit 15
A semiconductor laser in the optical head 5 (shown in FIG.
) Is performed to record data. After this recording, read-after-write is performed. In other words, above
The block in which the recording was performed is read. That is,
The control circuit 20 stores the target block as in the case of the above recording.
The track of the optical head 5 with the laser beam
You. Then, match the block header of the target block
The signal is transferred from the header comparator 28 to the recording / reproduction switching circuit 27.
When supplied to the
Playback data from the real-parallel conversion circuit 25
The data is supplied to the raw data buffer 30. This recording / playback data
The reproduced data stored in the buffer 30 has an error correction code.
Error correction by weak correction capability is performed by addition / error correction circuit 31
Will be As a result, no correction error (defect) occurred.
In this case, the control circuit 20 ends the recording processing. As a result, if a correction error (defect) occurs,
The control circuit 20 is used next according to the defect replacement area information during recording.
Judge which alternative block is
Record the data again. After performing this recording,
Read-after-write and correct errors (defects)
If not, the control circuit 20 responds to the defective block.
Replacement at the time of recording in the memory buffer 43 with the replacement block
The area information is updated, and the information in the memory buffer 43 is further updated.
The information is recorded in the management information areas c and d. In addition,
If an error (defect) occurs, the control circuit 20 switches to another alternative block.
Record the above recorded data again in the
Operate (second alternative processing means). In this way, when checking the recording data,
If a defect is found twice, defect management information is recorded multiple times
I can do it. The same applies to recording data in other blocks.
It can be done like this. In this case, the above block
As the position is located on the outer peripheral side, the clock signal
The data is recorded in a state where the frequency is increased. The recording operation is performed as shown in FIG.
Has become. In addition, an external interface from a host computer (not shown)
Playback via the interface circuit 33 (access
Suppose that the block number is supplied to the control circuit 20. Then, the control circuit 20 stores the block number in the memory bar.
Included in the initial defect replacement area information g of the buffer 43
, That is, whether it is an initial defect area. This
If it is not the initial defect area as a result of the check, the host
Block to play block number from computer and
I do. In addition, as a result of the above check,
The replacement block read out from the initial defect replacement area information g.
Block to be played back (third alternative processing procedure)
Stage). Then, as in the case of the recording, the block (e)
Block number from the
Clock speed information corresponding to the
Modulates the clock signal of the frequency according to the lock speed information
Circuit 21, demodulation circuit 22, reproduction synchronous clock extraction circuit 23,
Larrel-serial conversion circuit 24, serial-parallel conversion
The signal is supplied to a circuit 25 and a header discrimination circuit 26. Also, as in the case of the above recording, the target block
The laser beam of the optical head 5 is made to correspond to the rack. Then, match the block header of the target block
The signal is transferred from the header comparator 28 to the recording / reproduction switching circuit 27.
When supplied to the
Playback data from the real-parallel conversion circuit 25
The data is supplied to the raw data buffer 30. This recording / playback data
The reproduced data stored in the buffer 30 has an error correction code.
The addition / error correction circuit 31 causes an error due to the normal error correction capability.
Corrections are made. In this case, a correction error (defect) occurs.
If not, the control circuit 20 records the reproduction data into the recording / reproduction data.
Data transfer circuit 33 and external interface circuit 33
Transfer to the host computer and end the playback process.
You. As a result, if a correction error (defect) occurs,
The control circuit 20 performs a recording defect replacement area in the memory buffer 43.
A Replacement block corresponding to the defective block from the
Read and record data of the substitute block as described above.
The data is reproduced with normal error correction capability. Soshi
Thus, the control circuit 20 uses the reproduced data from the substitute block.
Recording / playback data transfer circuit 33 and external interface
Transfer to the host computer via the circuit 33 for playback processing
(Reproducing means). The same applies when playing back data in another block.
It can be done like this. In this case, the above block
As the position is located on the outer peripheral side, the clock signal
The data is reproduced in a state where the frequency of the data is increased. The operation at the time of the reproduction is as shown in FIG.
Has become. Also, when removing the optical disc 1 (when closed),
When the defect management information is updated, the control circuit 20
The defect management information stored in the rebuffer 43 is updated to the latest information.
As information, the first of the management information areas c and d of the optical disc 1
Recording in an unrecorded area (recording means). As described above, the recording data is stored in the optical disk device itself.
Defect at the initial or recording time to ensure the reliability of
It is now possible to perform alternative processing for the rear
Processing time can be reduced and the host
Processing by releasing the data from alternative processing
It is possible. In addition, the data defect check requires a correction capability during recording.
Weakly check (1 byte correction) strictly check,
Improve reliability. At the time of reproduction, the normal level (3
Checking with the correction ability of (byte correction), playback becomes impossible
Only the data that has been subjected to the substitution processing is reproduced. to this
Even if it is defective due to weak correction ability, it is normal level
For areas that can be corrected with the correction capability of
Not performed. Therefore, the access circuit required for the substitution process
Can be reduced and access speed can be improved.
is there. Therefore, without losing reliability,
The efficiency can be improved. Also, when recording and reproducing data, memory
Refer to the initial defect replacement area information stored in the buffer
Then, the substitute process is performed only for the corresponding area. Also,
Defect after checking read-after-write during data recording
Area is not found or there is an area that cannot be played during data playback.
Only when an error occurs, the recording defect replacement area information part is used.
To perform a substitution process for the defect. Therefore, the initial
Alternative processing procedure for defects and alternative processing for recording defects
Process, and each defect state (defect nature,
Feature), and efficient alternative processing
Can work well. Furthermore, the recording buffer defect replacement area in the memory buffer
Information is updated each time an alternative process during recording is performed.
Each time the optical disk is closed, its memory
Buffer initial defect replacement area information and recording defect replacement area
4K bytes of defect management information
Recorded in the management information area in the alternative processing area
It is supposed to be. In this case, the above initial defect replacement
Area information and latest defect replacement area information at the time of recording
, So that each piece of information is not processed specially,
It can be recorded on an optical disc. In addition, the defect management information is placed under the control of the optical disk device.
The defect management information
Breaking can be prevented. In addition, defect management is
Since the device can do everything on its own, the recording format of the optical disc
In terms of cost, it can be compatible with others. Also, as management information for initial defects and recording defects
Because the alternative area information of the
Speed can be improved. In the above embodiment, the replacement processing for the defective area is performed.
Has been described, but the invention is not limited to this.
Alternate processing is performed by a command from the host computer.
It may be possible to select whether or not to do so. In this case,
Compatibility with existing devices can be maintained. In addition, as an information recording medium
The case where an optical disk is used has been described above.
Not limited to, magnetic disk, floppy disk, laser
It may be a card or the like. [Effects of the Invention] As described in detail above, according to the present invention, recording of information
Time and playback time can be reduced and the host
By releasing the computer from alternative processing,
An information processing device that can be reduced can be provided. Further, according to the present invention, the defect check of information is performed by:
Weakened the correction ability during recording (1 byte correction)
To improve the reliability during recording, and
Check and play back with level (3-byte correction) correction ability
Only the data that has been subjected to the substitute processing is reproduced
Can cause defects even with weak correction ability.
Even in areas that can be corrected with normal level correction capabilities,
Therefore, since the alternative processing is not performed,
Access times can be reduced, improving access speed.
To improve processing efficiency without losing reliability.
And an information processing apparatus that can perform the above.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, and FIG.
1 is a flowchart for explaining a recording operation, FIG. 1B is a flowchart for explaining a reproducing operation, FIG. 2 is a diagram schematically showing a configuration of an optical disk device, and FIG. 3 is a diagram showing a configuration of an optical disk. FIG. 4, FIG. 4 is a plan view showing the structure of the disk, FIG. 5 is a plan view for explaining the substitute processing area and the user area, and FIG. 6 is a plan view for explaining the structure of the substitute processing area. FIG. 7, 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, and FIG. FIG. 4 is a diagram for describing a storage example of a memory buffer. 1 ... optical disk (information recording medium), 1a ... recording film, a
…… Substitute processing area (substitution processing recording area), b…
... user area (user recording area), c, d ... management information area, e ... substitute 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 medium).

Claims (1)

(57) [Claims] A defect management information recording area in which defect management information including initial defect replacement area information indicating a replacement area for an initial defect area and recording defect replacement area information indicating a replacement area for a recording defect area is recorded. In an information processing apparatus that records or reproduces information on an information recording medium that has been set, initial defect replacement area information and recording defect replacement area information that are recorded in a defect management information recording area of the information recording medium. Reading means for reading defect management information comprising: a storage means for storing defect management information comprising initial defect replacement area information read by the reading means and defect replacement area information at the time of recording in a storage medium; It is determined whether the recording area is a defect area based on the defect management information stored in the storage medium, and the defect area is determined. In the case of (1), first alternative processing means for recording information in an alternative area based on the defect management information, and after recording the information, reproducing the information by reading the recorded information and performing error correction with a first correction capability. When a correction error occurs and reproduction cannot be performed correctly, the recording area is recorded as a defective area and information is recorded in another area, and the correspondence between the defective area and another recording area is recorded as defect management information as described above. A second alternative processing means for additionally storing the defect replacement area information at the time of recording of the storage medium; and, when reproducing the information, reading out the information recorded in the area to be reproduced and performing the first processing by the second alternative processing means. A reproduction unit for reproducing information by performing error correction with a second correction capability larger than the correction capability, and an area for reproducing information when reproducing the information is stored in the storage medium. Determining whether the area is a defect area based on the defect management information, and if the area is a defect area, a third alternative processing means for reproducing the information for the alternative area by the defect management information by the reproducing means; and when removing the recording medium, or Recording means for recording the defect management information stored in the storage medium in a defect management information recording area of the recording medium when the defect management information is additionally stored. .