JP2001184642A - Optical disk device and its data recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely record and reproduce data without vanishing the already recorded data in the Read Modify Write process of an optical disk device. SOLUTION: In the data recording method (so-called Read Modify Write process) for adding new data to the read-out data which are read out from the optical disk when the new data are recorded on the optical disk and for recording by combining the read-out data and recording data, the already recorded data are prevented from vanishing by doubly executing the detection of the unrecorded state of the read-out data part and the decision whether the read-out of data is allowed or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical information recording / reproducing apparatus for recording / reproducing information using an optical information recording medium (hereinafter, simply referred to as an optical disk apparatus).
In particular, the present invention relates to an optical disk device suitable for recording and reproducing data, and a data recording method in such an apparatus.

[0002]

2. Description of the Related Art Conventionally, an optical disk for optically reading and reproducing recorded information from an optical information recording medium on which information is recorded by forming pits on a disk-shaped optical recording medium by utilizing a phase change or the like. Various types of devices are known and are already in practical use. Also, in recent years, as an optical recording medium capable of recording a large amount of information by increasing its information recording density, for example, a so-called DVD has been proposed and attracted attention, and a reproducing apparatus for reading out and reproducing the recorded information. Some of them are already commercially available.

In a high-density recording medium including a DVD or the like, a laser having a shorter wavelength than a conventional optical disk device such as a CD is used as an optical reproducing means in order to increase the information recording density on the disk-shaped medium. In addition to using light, in order to further improve the track pitch density, irregularities called land areas and groove areas are formed on the recording surface of the medium, and information is recorded in these areas. . Note that these land areas and groove areas alternately appear every turn following a tracking operation by an optical pickup as an optical reproducing means. Also,
As such a high-density recording medium, a recording medium capable of only reproducing recorded information, a recording medium capable of performing one-time recording,
Further, various recording media such as a recording medium capable of performing recording a plurality of times have been proposed. Note that these various recording media have different characteristics, particularly in terms of the reflectance and the like.

[0004] When data is recorded using such a high-density recording medium, it is advantageous to record large data such as image data and to ensure compatibility with a medium such as a DVD-ROM. Therefore, the recording unit of data tends to be larger than before. For example, in the case of a DVD-RAM, 32 kB is used as a data recording unit.

[0005]

When the recording unit of data is increased, a file of a small capacity is recorded, or when the recording unit spans a joint between files, data is read out once. Then, the data is rearranged and recorded. In this case, re-recording is performed on the already recorded data, so it is necessary to carefully determine whether or not the data is already recorded. If the determination method is uncertain, the data is lost. It is also possible that it will.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems. In particular, it is possible to accurately determine whether data is recorded or not, and to reliably record and reproduce data even when the data recording unit is increased. And a data recording method for the optical disk device.

[0007]

Means for Solving the Problems First, to achieve the above-mentioned object, the present invention provides a method for recording new data on an optical information recording medium by recording data from the optical information recording medium. Reading, adding at least a part of the recording data of the new data to the read data, and at least using a data recording method of recording the read data and the recording data together, wherein the data recording method of the optical disc device, The non-recording of the read data portion is detected and the readability of the data is determined. If the read data portion is determined to be unrecorded and the read data is determined to be an error, the read data is set to (00) h. The recording is performed together with the recording data, and the read data portion is determined to be unrecorded, and the read data is normally recorded. If it is determined that the data has been generated, the read data and the recording data are recorded together, and further, if it is determined that the protruding data portion has been recorded, the data is reproduced from the read data portion. The data and the recording data are recorded together.

In the present invention, the unrecorded state can also be detected by detecting a change in the reflectance of the recorded portion.

Further, in the present invention, the error determination of the read data can be performed by using an ECC error.

In the present invention, a SYNC error can be used for the error determination of the read data.

Furthermore, according to the present invention, in order to achieve the above object, when new data is recorded on an optical information recording medium, the data is read from the optical information recording medium, and the new data is added to the read data. An optical disc device that uses at least a data recording method of adding at least a part of recording data of the read data and the recording data, and a data reproducing unit that reads data from the optical information recording medium, A non-recording detection unit for detecting non-recording of the optical information recording medium, a data reading determining unit for determining whether data can be read from the optical information recording medium, and recording the read data and the recording data together A data recording unit, wherein the unrecorded detection unit determines that the read data portion is unrecorded, and If the read data is determined to be an error by the unit, the data recording unit records the read data as (00) h together with the record data, and determines that the read data unit is unrecorded. And, when it is determined that the read data can be normally reproduced, recording is performed together with the read data and the recording data, and further, when it is determined that the protruding data portion is already recorded, There is provided control means for reproducing data from the read data section and controlling the data and the recording data to be recorded together.

Further, in the present invention, the unrecorded detection section may be constituted by an envelope detection circuit for detecting a change in reflectance of the recording section and a comparison circuit.

Further, in the present invention, the data read determination section can use an ECC error to determine an error when ECC correction is impossible.

Further, in the present invention, the data read determination unit includes a SYNC detection circuit and a SY detection circuit.
It can also be constituted by a judgment unit for judging an NC error.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, a schematic configuration of an optical disk device according to the present invention will be described with reference to FIG. FIG. 1 is a block diagram of a readable / writable optical disc device for an optical information recording medium according to the present embodiment.

First, in FIG. 1, reference numeral 100 denotes an optical disk of a high-density information recording medium. Reference numeral 200 denotes a recording / reproducing head, which includes a semiconductor laser, various lenses, a photodetector, and the like used for recording / reproducing.

In this embodiment, the optical disk 1
In order to record / reproduce information at 00, the recording / reproducing head 2
By controlling an objective lens (not shown) of the recording / reproducing head 200 through a focus / tracking control circuit in accordance with the focus / tracking error signal 210 from 00, accurate focus / tracking is performed. A command is issued from the system controller 500 for various offsets or land / groove switching of the recording / reproducing head 200.

The reproduced signal from the recording / reproducing head 200 is
After being amplified by the RF amplification circuit 230, the binarization circuit 24
0, sent to the system controller 500 through the data demodulation circuit 250 and reproduced as data. At the time of data demodulation, a sync signal is detected by a SYNC detection circuit,
It accurately demodulates data. Further, according to the embodiment described later, the SYNC detection circuit 260
A C error signal is sent to the system controller.

Another output of the RF signal amplifying circuit 230 is sent to an unrecorded determination circuit 280 through an envelope detection circuit 270, and reports a determination of recording or unrecorded to the system controller 500.

When recording data, the recording data 600
The processing described below is performed by the system controller 500 according to the
10, recording pulse conversion circuit 420, laser drive circuit 43
0, the data is sent to the recording / reproducing head 200, and the data is recorded on the optical disk 100.

The apparatus according to this embodiment includes a disk rotation motor 300, a motor control circuit 310, and a slider motor 32 for moving the recording / reproducing head 200.
0, a slider motor control circuit 330, each of which is controlled by the system controller 500.

Next, an optical disc 100 called a DVD-RAM among information recording media will be described in detail with reference to FIG. FIG. 3 is an external view of the optical disk 100 on which information is recorded / reproduced by the optical disk device.
Is a perspective view, and FIG. 3B is a plan view.

Among such optical disks, in particular, DVD
-In a recordable medium called a RAM, a mark in a crystalline state or an amorphous state is formed on a recording layer on a transparent substrate by irradiating a laser beam, for example, using a phase change, thereby recording information. Writing is possible, and thereafter, the change in the reflectivity of crystalline and amorphous light due to the formation of the mark is read, so that the optical disc 100 can be written.
Play the information recorded in the.

The optical disc 100 shown in FIG. 3 exemplifies a recordable information recording medium called a DVD-RAM as an example, and as shown in FIG. 3, predetermined control information and the like ( RO that recorded control data)
It is divided into an M area 110 and a surrounding RAM area 120. In the optical disc as described above, as shown in FIG. 3 (b), the RAM area 120 has a spiral track T for continuously recording information on a disk as its information recording portion. Therefore, in order to increase the recording density, the recording and reading of information is made possible by being formed in an uneven area called a land and a groove.

Further, the RAM area 120 is divided into several areas. That is, information management areas 121 and 1 for information related to device control are provided inside and outside the RAM area 120.
22, a user area 123 for reading and writing user information is provided therebetween.

Further, the management areas 121 and 122
Are divided into a disk test zone, a drive test zone, a defect information management zone, and the like (not shown). The drive test zone is also used as a writing area when performing pre-write or the like described later. The defect information management zone is an area for recording defect management information of a disk, and is also called a DMA area. The user area 123 is composed of a plurality of areas (zones) that are further divided into a plurality in the radial direction.

FIG. 4 shows an example of a recording format used in this embodiment. FIG. 4A shows the tracks of the optical disc 100 in order from the inner circumference.
The optical disc 100 has a ROM area 110, a management area 12
1, a user area 123 (more specifically, a user area and a spare area) and a management area 122.

FIG. 4B shows the user area 123 in detail. The user area 123 is divided into a total of 24 zones from zone 0 to zone 23, and each zone is composed of a user area and a spare area.
The spare area is used when there is a defect in the user area. When the user area has a defect, recording is performed in the spare area instead. This processing is called replacement processing, and the replacement processing information is managed in the defect management zones in the management areas 121 and 122.

The user area and the spare area are assigned a PSN (Physical Sector Number) address for each sector. In the optical disc 100, the first P of the zone 0
SN is (31000) h, and is a sequential number in the following order. Here, (31000) h indicates 31000 in hexadecimal. Hereinafter, in the case of a hexadecimal number, it is represented as (####) h. Note that ## is a hexadecimal number.

FIG. 4C shows a net user area of the optical disc 100. The user area excludes the spare area, and the LSN is assigned to each sector.
(Logical Sector Number). LSN
Are set to 0 at the beginning of zone 0, and numbers are sequentially assigned.
If a defective sector in the user area is known in advance by certification or the like, the defect information is registered in the management area, the defective sector is skipped, and the address of the LSN is assigned. Thus, the PSN is an actual address on the optical disk, and the LSN is an address for managing user data.

FIG. 4D shows an example in which a file is recorded using the user area of the optical disc 100. When recording a file, it is recorded by some file system such as FAT or UDF. At this time, the volume configuration related to the used file system information and the like is recorded, and then the file configuration and files are recorded. The file structure and the location where the file is recorded are in LBN (Logical Block Number)
Is set, and the file structure and the beginning of the file are LBN.
Recorded as 0.

As described above, the file on the file system and the recording location on the optical disk are LBN-LSN-PS
N is associated with each address.

Next, the optical disk 1 will be described with reference to FIGS.
An ECC block which is the minimum recording unit used for recording 00 will be described. FIG. 5 is an explanatory diagram illustrating recording blocks of the optical disk 100, FIG. 6 is a flowchart illustrating one method of generating recording data to be recorded on the optical disk, and FIG. 7 is a data configuration diagram illustrating an example of recording data.

As shown in FIG. 6, for the recording data to be recorded on the optical disk, an ID error detection code (IED) is added to the data ID (step 1201), and the main data and the error detection code (EDD) are further added.
C) is added (step 1202). Next, after scrambling these data (step 1203), the EC
Recording data is obtained by performing C encoding (step 1204), interleaving (step 1205), and further adding a SYNC code. This recorded data block is
Data is recorded on the optical disk in C-block units in units of ECC blocks.

FIG. 7 shows the structure of the ECC block. The ECC block has 182 bytes of data of 208 bytes.
It has a line-up configuration. 10 out of 182 bytes
The bytes are error codes called PI (inner parity code), and out of the 208 lines, 16 lines are error codes called PO (outer parity code).
The combination of PI and PO is called an ECC error code. Twelve rows of data including the PO1 row are recorded in the sector which is a recording unit on the optical disc. Therefore, in order to record one of the ECC blocks, 16 sectors (that is, 13 rows × 16 sectors = 208 rows) are recorded on the optical disc.

The recording state on the optical disk will be described in detail with reference to FIG. FIG. 5A shows a track of the optical disc 100, and a PID area 155 is provided for each sector.
0 and a data area 1560 are formed. In the PID area 1550, the PSN is recorded in advance, and in the data area 1560, 13 lines of the ECC block are recorded. As shown in FIG. 5B, the above-mentioned 16 sectors form one ECC block.

In one sector in the ECC block,
The data amount excluding PI and PO is 172B × 12 = 206
Since 4B includes 4B of data ID, 2B of IED, 6B of reserve, and 4B of EDC, the net user data is 2048B by subtracting these.
Therefore, the amount of user data per ECC block is 2048B × 16 = 32768B. Since the above capacity is complicated, the user data capacity per sector is simply referred to as 2 kB, and the user data capacity per ECC block is simply referred to as 16 × 2 kB = 32 kB.

Next, a recording state when a 32 kB ECC block is used as a minimum recording unit will be described with reference to FIG.
FIG. 8A shows an example of a recording state in the LBN space.
8 kB of data is recorded from LBN0 (reference numeral 807),
The next 72 kB is an example in which data is not recorded (reference numeral 808), and data is recorded thereafter (reference numeral 809). In this case, the recording state in the LSN space is as shown in FIG. That is, the first ECC block 810 is 8 kB
Data and 24kB (00) h data in total of 32
kB, record data is constructed by the steps shown in FIG.
Record in the LSN. The next ECC block 811 is left unrecorded because there is no data to be recorded. In the next ECC block 812, the recording data is constructed and recorded by combining the (00) h data of 16 kB and the first 16 kB data of the recorded 809.

A case where 64 kB of data is additionally recorded in the data unrecorded space 808 of the LBN space will be described with reference to FIG. This is an example where Read Modify Write occurs. The LBN space in FIG.
The additional recording data 920 of kB is added, and the data unrecorded portion 921 of 8 kB subsequently exists. FIG.
In the LSN space of (B), the first ECC block 810
Is recorded by constructing recording data by combining the recorded data of 8 kB and the first 24 kB of additional recording data. At this time, the optical disc apparatus reads (Read) the ECC block 810 in FIG. 8B, extracts recorded 8 kB data, and combines the 8 kB data with the first 24 kB of additional recording data to record data. Build (Modify) and record in ECC block units (Wr
ite). This series of processing is called Read Modify Write.

In the next ECC block 811, 32 kB
Since recording is performed as it is, normal recording is performed without performing Read Modify Write. That is, 2 from the beginning of the additional recording data
Data of 32 kB after 4 kB is constructed and recorded according to the steps in FIG.

In the last ECC block 812, the last 8 kB data of the additional recording data and the (00) h of 8 kB
The data is combined with the data of the first 16 kB of the recorded 809 to construct and record the data. Also in this case, Read Modify Write is performed.

As described above, there is a possibility that Read Modify Write is performed in the first and last portions of the recording data. Also, when performing this Read Modify Write,
Since the existing recording data will be rewritten, it is necessary to exercise sufficient care so as not to lose the recording data.

Next, a data recording method for an optical disk according to an embodiment of the present invention will be described with reference to the flowchart of FIG.

FIG. 2 shows an optical disk 10 using an optical disk device according to an embodiment of the present invention when a data write command for a file or the like is issued from a host system such as a personal computer.
FIG. 11 is a flowchart for writing the data to 0.

In accordance with a data write command for a file or the like (step S11) from a host system such as a personal computer, a file system such as a UDF, for example,
Check the free space in the optical disc 100 on P,
A recording area in the BN space is determined (step S12).
Subsequently, the file system gives a start LSN and a recording data length according to the recording area, and issues a write command to the optical disk device (step S13). The processing of the following steps is performed in the optical disk device, and does not involve the host system such as the file system and the personal computer.

The above optical disc apparatus uses the information of the start LSN and the recording data length to record the first block (E
The CC block) determines whether or not the Read Modify Write process is required (step S15). For example, when recording additional recording data as shown in FIG. 9, the first block is a Read Modify Write process.
In this case, the data of the block is read (step S17), additional recording data is added to the read data to reconstruct the data (step S18), and the data is recorded in the block (step S19). If it is determined in step 15 that there is no Read Modify Write process, the ECC encoding process shown in FIG. 6 is performed, and the data is directly recorded in the block (step S2).
0).

The following intermediate block (step S2)
In 0), until the last block of the recording data is reached,
Repeat data recording in block units (step S2
1). For example, in the case shown in FIG. 9, the intermediate step is performed once.

In the last and final block of the data recording (step S21), it is determined again whether or not the Read Modify Write process is required (step S15). Re
If it is determined that the ad Modify Write process is unnecessary, the data is recorded in the block and the process ends.

On the other hand, for example, in the case shown in FIG. 9, the last block is a Read Modify Write process, and in this case, unrecorded detection of the block is performed (step S25). This unrecorded detection uses a method of detecting the reflectance, which will be described later in detail. If it is determined that the data has been recorded (for example, in the case of FIG.
Based on the odify write process, steps S26, S27,
After executing S29, the process ends.

If it is determined in step S25 that data has not been recorded, the data is read from the block (step S25).
29). Here, an ECC error is detected at the time of data reading (step S30), and it is confirmed that data cannot be read due to the ECC error.
0) h is added to the end of the recording data to reconstruct the data (step S33), the data is recorded in the block (step S34), and the processing ends.

If the data can be read as a result of the ECC error correction even if it is determined that the data has not been recorded, the data is reconstructed by adding the recorded data as in the case of the recorded data (step S31). The data is recorded in the block (step S32), and the process ends.

According to the present embodiment, unrecorded detection based on reflectance and unrecorded detection based on an ECC error are performed twice, so that data loss during Read Modify Write processing can be prevented, and reliability can be greatly improved. That is, the unrecorded detection is incomplete. For example, in the example of FIG.
If the block 812 is determined to be unrecorded, the 16 kB data at the head of the recorded data 809 will be lost. In the present embodiment, even if it is once detected as unrecorded by the reflectance, unrecorded detection is performed again by reading data, so that data loss can be prevented.

Next, the method of detecting unrecorded data based on the reflectance in the present embodiment will be described with reference to FIGS. The unrecorded detection means based on the reflectance includes an envelope detection circuit 270 and an unrecorded determination circuit 280.
FIG. 10A shows the output waveform of the RF signal amplification circuit 230 corresponding to the input signal of the envelope detection circuit 270. The output waveform is composed of signals of a PID section and a recording data section for each sector. Here, the PID section is always output regardless of whether data is recorded or not. When data is recorded, the data recording unit outputs a signal due to a change in reflectance. If no data is recorded, the output is zero.

When the signal shown in FIG. 10A passes through the envelope detection circuit 270, the waveform shown by the solid line in FIG. 10B is obtained. This signal is sent to an unrecorded determination circuit 2 comprising a comparison circuit.
The recording / non-recording is determined through 80. FIG. 10B shows the slice level of the comparison circuit by a dotted line. FIG.
(C) shows an envelope detection circuit 270 in the case of no recording.
Is shown by a solid line. As described above, the comparison circuit outputs a High pulse when the level is equal to or higher than the slice level, and outputs a Low pulse when the level is lower than the slice level. It is possible.

Next, another embodiment according to the present invention will be described with reference to FIG.
This will be described with reference to FIG. This embodiment introduces a SYNC error detection (step S80) instead of the ECC error detection in the embodiment of FIG. 2, and performs the block data read when the SYNC error becomes equal to or less than a predetermined level (step S80). S81). Other than this, it is the same as that shown in FIG.

The determination of the SYNC error detection is made by the SYNC
This is performed by sending the SYNC error count number to the system controller 500 using the C detection circuit 260. As shown in FIG. 6, the SYNC signal is added before the recording data is formed, and about 26 SYNC signals are provided per sector. In this embodiment, if 13 of the 26 are detected, the process proceeds to step S81. However, this set value is not limited to this, and depends on the optical disk device, so it may be set to an appropriate value in conjunction with the above-mentioned slice level for which no recording has been detected.

According to the embodiment shown in FIG. 13, the unrecorded state can be doubled, and the same effect as that of the embodiment shown in FIG. 2 can be obtained. Further, in the present embodiment, since the data read is performed in step S81 after the detection of the SYNC error, it is possible to make a stricter determination than in the embodiment of FIG. That is, if the SYNC detection is OK and the data cannot be read in step S81, it can be understood that the data is recorded in the block, but the recorded data itself has a problem. Although not shown in FIG. 13, in this case, Read
Cancels the Modify Write process, sets an error flag, and reports it to the higher system. As a result, it is possible to further reliably prevent the loss of the already recorded data.

Next, another embodiment of the present invention will be described with reference to the flowchart of FIG. The embodiment of FIG. 11 is a more simplified version of the embodiment of FIG. That is, step S2, which is located in two places in FIG.
7 and S31 are collectively referred to as S51, and steps S28, S32, and S34, which are three places in FIG. 2, are collectively referred to as S52. The effects of the present embodiment other than the simplification are the same as those in FIG.

Next, another embodiment of the present invention will be described with reference to the flowchart of FIG. The embodiment of FIG. 12 is different from the embodiment of FIG. 11 in that the ECC error detection (step S30) is not recorded (step S2).
It was brought before 5).

That is, the last block is Read Modify Wr
After it is determined that the ite process has been performed, data reading of the block is performed (step S71), and an ECC error is detected (step S30). After the ECC error correction, if the data reading is OK, the read data is added to the recording data to reconstruct the data (step S73), the data is recorded in the block (step S52), and the process ends.

On the other hand, if the ECC error cannot be corrected and the data read is NG, the non-recording non-recording of the block is detected (step S25). If the data is not recorded, all the data of the block is set to (00) h. To reconstruct the data (step S33), record the data in the block (step S52), and end the process.

If it is determined in step S25 that recording has been completed, the process returns to the step of detecting an ECC error again. Although not shown in FIG. 12, a counter is provided in the return routine, and when the same block has passed this routine a predetermined number of times or more, it is determined that the data of the block has been destroyed. However, as in the embodiment of FIG. 13, the Read Modify Write process can be stopped, an error flag can be set, and the error can be reported to the host system. In the present embodiment, in addition to the advantages of the above-described embodiment, there is an advantage that the number of processing steps is small, so that the writing time can be reduced.

[0064]

According to the present invention, the unrecorded state is double-detected using the reflectance and the ECC error or the SYNC error, etc., and the recorded / unrecorded state of the data is accurately determined.
In the ad Modify Write process, it is possible to reliably record and reproduce data without losing already recorded data.

[Brief description of the drawings]

FIG. 1 is an apparatus block diagram of an optical disk apparatus according to the present invention.

FIG. 2 is a flowchart of a data recording method of the optical disc device according to the present invention.

FIG. 3 is an external view of a DVD which is an optical disk on which information can be reproduced and recorded by the optical disk device according to the present invention.

FIG. 4 shows a physical format (PS) of the DVD shown in FIG. 3;
FIG. 3 is an explanatory diagram for explaining the relationship between N) and a logical format (LSN) and LBN of a file system.

FIG. 5 shows a sector format and E in the DVD of FIG. 3;
FIG. 4 is an explanatory diagram showing a relationship between CC blocks.

FIG. 6 is an explanatory diagram showing one method of generating recording data to be recorded on the DVD of FIG.

7 is a configuration diagram showing a data configuration after ECC encoding in a recording data generation process in FIG. 6;

FIG. 8 is an explanatory diagram for explaining a correspondence relationship between a recording state of an LSN space in the DVD of FIG. 3 and an LBN space of a file system.

FIG. 9 is an explanatory diagram for explaining the correspondence between the recording state of the LSN space and the LBN space of the file system when additional data is newly written in the state of FIG. 8;

FIG. 10 is an explanatory diagram schematically showing waveforms near an envelope detection circuit of the optical disc device according to the present invention.

FIG. 11 is a flowchart of another data recording method according to the present invention.

FIG. 12 is a flowchart of another data recording method according to the present invention.

FIG. 13 is a flowchart of another data recording method according to the present invention.

[Description of Signs] 100: optical disk, 200: recording / reproducing head, 210
... Focus / tracking error signal, 220 ... Focus / tracking control circuit, 230 ... RF signal amplifier circuit, 250 ... Data demodulation circuit, 260 ... SYNC detection circuit, 270 ... Envelope detection circuit, 280 ... Unrecorded detection circuit, 300 ... Motor , 310 ... motor control circuit, 3
20: slider motor, 330: slider motor control circuit, 430: laser drive circuit, 500: system controller, 600: recording data.

Continuing on the front page (72) Inventor Kimoto Ichikawa 1410 Inada, Hitachinaka-shi, Ibaraki F-term (reference) Digital Media Products Division, Hitachi, Ltd. 5D044 BC06 CC04 DE68 EF05 EF07 GM27 HL14 5D090 AA01 BB04 CC01 CC07 DD03 DD05 EE05 EE17 FF07 FF26 FF34 FF36 FF43 HH01

Claims (8)

[Claims] When recording new data on an optical information recording medium, data is read from the optical information recording medium, and at least a part of the recording data of the new data is added to the read data. A data recording method for an optical disc device using at least a data recording method of recording the recording data together, wherein the non-recording of the read data portion is detected and the readability of data is determined, and the read data portion is If the read data is determined to be an error, the read data is set to (00) h, recording is performed together with the recording data, and the read data portion is determined to be unrecorded, If it is determined that the read data has been normally reproduced, the recording is performed together with the read data and the recording data. Furthermore, if the read data unit is determined to be recorded, and reproducing data from the read data unit, a data recording method for an optical disk apparatus characterized by recording together the data and the recording data. 2. A data recording method for an optical disk device according to claim 1, wherein said unrecorded state is detected by detecting a change in reflectance of a recording section. 3. The data recording method for an optical disk device according to claim 1, wherein an ECC error is used for determining an error in the read data. 4. The data recording method for an optical disk device according to claim 1, wherein an error of said read data is determined by using a SYNC error. 5. When new data is recorded on an optical information recording medium, data is read from the optical information recording medium, at least a part of the new data is added to the read data, and the read data and An optical disc device using at least a data recording method for recording the recording data together, comprising: a data reproducing unit for reading data from the optical information recording medium; and an unrecording detecting unit for detecting non-recording of the optical information recording medium. A data read determination unit that determines whether data can be read from the optical information recording medium, and a data recording unit that performs recording by combining the read data and the recorded data. If the data portion is determined to be unrecorded and the data read determination portion determines that the read data is an error, the data portion At data recording unit, the read data (00) performs the recording in conjunction with the recording data as h, The data section heading above said is determined that an unrecorded,
And, when it is determined that the read data can be normally reproduced, the read data and the recording data are recorded together, and when the read data portion is determined to be recorded, the read data portion is read. An optical disc device comprising: a control unit that controls data to be reproduced and to record the data together with the recording data. 6. An optical disk apparatus according to claim 5, wherein said unrecorded detecting section comprises an envelope detecting circuit for detecting a change in reflectance of the recording section and a comparing circuit. apparatus. 7. The optical disk device according to claim 5, wherein the data read determination unit uses an ECC error and determines an error when ECC correction is impossible. 8. The optical disk device according to claim 5, wherein said data read determination unit comprises a SYNC detection circuit and a determination unit for determining a SYNC error of said detection circuit. Optical disk device.