JPH10289529A - Optical disk recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent occurrence of an infeasible area for recording and reproducing by overwriting a packet in a recording area of a rewritable optical disk in a packet write system SOLUTION: At the time of overwriting a new recording packet on a recorded packet in a track in the packet write system for performing such a method that plural tracks are formed in a recording area of the rewritable optical disk 1 by a signal processing system 8, and each track is divided into plural packets, and then data of individual packets are recorded in the lump, another packet is overwritten in a remaining area where the recorded packet is not overwritten by the new recording packet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical disk recording apparatus for writing data to a rewritable optical disk such as a CD-RW.

[0002]

2. Description of the Related Art The minimum reproduction unit of data recorded in a recording area of an optical disk such as a compact read-only optical disk (CD), a writable optical disk such as a CD-R, and a rewritable optical disk such as a CD-RW. Is called a block, and 2048-
2352 bytes (Byte) of data are included.

The minimum recording unit of data on an optical disk such as the CD-R or CD-RW is called a packet.
At least one reproducible user data block and five link blocks (one link block and four run-in blocks) provided before the user data block
And two link blocks (two run-out blocks) provided after the user data block.

As described in the Orange Book, the link block is a block necessary for connecting packets when recording data on an optical disk, and does not include user data. The data recording rule for the optical disc as described above is referred to as a “linking rule”.

[0005] As a method of recording data on a CD-R (also referred to as a "recordable compact disc") or a CD-RW (also referred to as a "rewritable compact disc"), a "track-at-once method" and a "track-at-once method" are used. Packet write method ".

[0006] The track-at-once method is a method of recording a track in one packet at a time. The user data blocks in the track are continuous, and no link block exists between the user data blocks. The track is a recording unit capable of recording up to 99 tracks on the optical disc, and its start address, end address, and the like are stored in another area on the optical disc in table of contents information (TOC: Tabl).
e Of Content).

On the other hand, the packet write method is a method in which a track is divided into a plurality of packets and recording is performed for each packet. Since recording is performed in packet units, user data blocks in one track exist discretely, and a link block exists between the user data blocks.

In a rewritable optical disk such as a CD-RW, an unrecordable area may be generated in a recording area due to overwriting of a packet by a packet write method.

That is, when the start address or the end address of the already recorded packet is different from the start address or the end address of the new recorded packet, for example, when a new recorded packet of a size included in the already recorded packet is overwritten, the newly recorded packet is If the overwriting is performed based on this, a remaining area that is not overwritten by the new recording packet of the already recorded packet occurs, and the remaining area violates the linking rule.

There is a problem that data recording and reproduction cannot be performed in an area that violates the linking rule. Therefore, conventionally, there has been an optical disk recording apparatus (for example, refer to Japanese Patent Application Laid-Open No. 7-326163) that prohibits reproduction of an area in which a recorded packet remains by overwriting a packet.

When a new recording packet is overwritten on a recorded packet in a recording area, if the start address and the end address of the already recorded packet and the new recorded packet are the same, even if the new packet is overwritten, the new recorded packet is Since the entire area is overwritten, the remaining area does not occur.

In a write-once optical disk such as a CD-R, all data recording is performed in a write-once manner. Therefore, even when recording is performed by the packet write method, the data is recorded after being recorded after being recorded on the recording area of the optical disk. Only a new recording packet is recorded, and the recording area can be recorded without waste by overwriting the packet.

[0013]

However, in the above-mentioned conventional optical disk recording apparatus, an unrecordable / reproducible area occurs in a recording area of a rewritable optical disk due to overwriting of a packet by a packet write method.
There is a problem that the recording area of the optical disc cannot be used effectively without waste.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to prevent an unrecordable / reproducible area from being generated in a recording area of a rewritable optical disk by overwriting a packet by a packet write method. And

[0015]

In order to achieve the above object, the present invention forms a plurality of tracks in a recording area of a rewritable optical disk, divides each track into a plurality of packets, and In a packet write type optical disc recording apparatus for recording data collectively, when a new recording packet is overwritten on a previously recorded packet in the above track, another packet is overwritten on the remaining area which is not overwritten by the new recording packet of the already recorded packet. Means for performing the operation.

When the length of the remaining area is equal to or less than the total number of blocks used in the link block, the length of the new recording packet is extended to the start address or the end address of the already recorded packet. It is preferable to provide a means for overwriting.

Further, it is preferable to provide means for assigning meaningless data to the remaining area of the already recorded packet which is not overwritten by the new recording packet and overwriting the remaining area.

Further, when the area of the new recording packet exceeds the area of the track, it is preferable to provide means for stopping the overwriting and reporting an error.

An optical disk recording apparatus according to a first aspect of the present invention forms a plurality of tracks in a recording area of a rewritable optical disk, divides each track into a plurality of packets, and collectively collects data for each packet. In the packet write method for recording, when a new recording packet is overwritten on a recorded packet in a track, another packet is overwritten on the remaining area that is not overwritten by the newly recorded packet of the recorded packet.

Therefore, when the rewritable optical disk is overwritten by the packet write method, the remaining area which is not overwritten by the new recording packet on the already recorded packet is automatically overwritten with another packet, thereby overwriting with the new recording packet. The remaining area that is not recorded is also recorded as another packet, so that data can be recorded and reproduced in the remaining area, and the recording area can be used effectively without waste.

In addition, a packet must have a total of seven link blocks at the beginning and end with at least one user data block interposed therebetween. Is required,
When the number of blocks in the remaining area that is not overwritten by the new recording packet on the already-recorded packet is eight or more consecutively, another packet can be recorded in the remaining area.

However, when the number of blocks in the remaining area which is not overwritten by the new recording packet on the already recorded packet is 8 blocks or less, other packets cannot be recorded in the remaining area, violating the linking rule. The recorded area cannot be recorded or reproduced.

Therefore, in the optical disk recording apparatus according to a second aspect of the present invention, when the length of the remaining area is equal to or less than the total number of blocks used in the link block, the length of the new recording packet is recorded. Extends and overwrites the packet to the start address or end address. That is, when the number of blocks in the remaining area is less than the total number of blocks necessary for composing the packet, the size of the new recording packet is extended and overwritten. Note that the packet has at least one
Since at least one user data block and a link block must be used, at least eight blocks are required.

Therefore, when the remaining area of the already recorded packet which is not overwritten by the new recorded packet is not the length (the number of blocks) necessary to generate one packet, the start address of the newly recorded packet is changed to the start address of the already recorded packet. Or by extending the end address of the new record packet to the end address of the already-recorded packet and filling the remaining area with the new record packet, so that the remaining address not having the necessary length to form a packet is obtained. The area can also be a regular area, and data can be recorded and reproduced.

Further, as described above, even if the remaining area which is not overwritten by the new recording packet of the already recorded packet can be made a regular area by extending the length of another packet or the new recording packet, If the contents recorded in the remaining area and the contents of the new recording packet cannot be identified,
When the content recorded in the remaining area is reproduced, there is a disadvantage that the block cannot be distinguished from the block consciously recorded by the user, and is different from the data originally intended by the user.

Therefore, the optical disk recording apparatus according to the third aspect of the present invention assigns meaningless data to the remaining area which is not overwritten by the new recording packet of the already recorded packet and overwrites it.

Therefore, when the new recording packet is reproduced on the optical disc after recording, the data recorded in the new recording packet is meaningful data, and the data recorded in the remaining area is meaningless data. The newly recorded packet and the remaining area can be easily distinguished.

Furthermore, the packet write method is a method in which a track is divided into a plurality of packets and data is recorded for each packet. The packet must exist in the track, and the area of the track must be recorded. It cannot exist beyond. That is, if the packet is recorded beyond the track area, the boundary of the track becomes incorrect, and data cannot be recorded and reproduced.

Therefore, when the area of the new recording packet exceeds the area of the track, the optical disk recording apparatus according to claim 4 of the present invention stops the overwriting and reports an error.

Therefore, when overwriting by the packet write method, if the area of the new recording packet exceeds the area of the track, the overwriting of the new recording packet on the already recorded packet is stopped, and the rewriting is performed so that the recording area is not illegal. It is possible to prevent a possible optical disk from becoming an unauthorized medium.

[0031]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an optical disk recording apparatus according to an embodiment of the present invention.

This optical disk recording device is a device for spirally recording an information signal called a pit array on a disk-shaped rewritable optical disk such as a CD-RW and reading an information unit called a block from the pit array. A packet write method for recording data in packet units in a recording area composed of a plurality of recording units called packets each having a block containing no user data called a link block before and after a user data block It is a device that employs

As shown in FIG. 1, the optical disk recording apparatus includes a spindle motor (hereinafter, referred to as "motor") 2 for rotating a rewritable optical disk (hereinafter, referred to as "optical disk") 1 such as a CD-RW, An optical pickup 3 on which a semiconductor laser is mounted to irradiate a recording area of the optical disc 1 with a laser beam L, and a coarse motor that moves the optical pickup 3 in the radial direction of the optical disc 1 in cooperation with a seek motor provided therein. A dynamic motor 4 is provided.

A rotation control system 5 for controlling the rotation of the motor 2, a coarse motor control system 6 for controlling the drive of the coarse motor 4, an optical pickup control system 7 for controlling the optical pickup 3, A signal processing system 8 for transmitting / receiving a signal of data read by the pickup 3 and a signal of data to be written to a recording area of the optical disc 1;
7 and a controller 9 for performing the processing according to the present invention together with the control of the signal processing system 8.

Further, the controller 9 is connected to a host computer via an external interface 10 and performs processing for sending data read from the optical disk 1 to the host computer and receiving data to be written on the optical disk 1 from the host computer.

Then, the optical pickup 3 is moved in the radial direction of the optical disk 1 while rotating the optical disk 1 by the motor 2, and a laser beam L is irradiated from the semiconductor laser of the optical pickup 3 onto the recording area on the recording surface of the optical disk 1. Then, data recording or reproduction is performed.

When recording data under the control of the controller 9, the optical disk recording device irradiates the recording area of the optical disk 1 with laser light L from the optical pickup 3 at a recording power and records various data on the optical disk 1.
When reproducing data under the control of the controller 9, the optical pickup 3 irradiates the recording area of the optical disc 1 with the laser beam L by the reproducing power and reproduces the data recorded in the recording area based on the reflected light.

In the optical disk recording apparatus, the signal processing system 8 and the controller 9 perform data recording processing on a recording area on the optical disk 1 according to the present invention by a packet write method.

That is, the signal processing system 8 and the controller 9 form a plurality of tracks in the recording area of the optical disk 1, divide each track into a plurality of packets, and collectively record data for each packet. The recording process of the packet write method is executed.

When a new recording packet is overwritten on a recorded packet in the track, a function of means for overwriting another area in a remaining area of the recorded packet which is not overwritten by the new recorded packet is performed. Further, when the length of the remaining area is equal to or less than the total number of blocks used in the link block, the length of the new recording packet is extended to the start address or the end address of the already recorded packet and overwritten. Acts as a means.

Furthermore, the function of allocating meaningless data to the remaining area which is not overwritten by the new recording packet of the already-recorded packet and overwriting is performed. Also, when the area of the new recording packet exceeds the area of the track, the function of a means for reporting the error by stopping the overwriting is performed.

FIG. 2 is an explanatory diagram showing the format of a packet in a packet write system by this optical disk device. About the packet, Orange Book Part 2 Version 2.0 (Orange Book Pa
rtII Version 2.0), and will be briefly described here.

The packet is composed of one or more reproducible user data blocks 24 and one link block (Link Block) 2 provided before the user data blocks.
Two and four run-in blocks
k) 23, and two link blocks including two run-out blocks (Run-Out Blocks) 25 provided after the user data block 24.

The link block is a block necessary for connecting the packets 21 when information is recorded in the user data block 24 of the packet 21 of the track on the optical disc 1.

Next, a process of recording data on an optical disk by the optical disk device will be described. This processing is performed when the controller 9 overwrites a packet (recorded packet) recorded in a track on the recording area of the optical disc 1 with a new packet (new recorded packet) by the signal processing system 8. Overwrite the remaining area that is not overwritten by the new recording packet with another packet.

FIG. 3 is a flowchart showing a process of recording data on an optical disk by the optical disk recording apparatus. In this process, when a new recording packet is overwritten on a recorded packet in a track formed on a recording area of the optical disk 1, a step 1 (indicated by "S" in the drawing) and a newly recorded packet in the track are performed. Compare the start address (start address) and end address of the packet respectively,
It is determined whether the start address or the end address is different.

If the start address and the end address of the already-recorded packet and the new-recorded packet are the same in step 1, the process proceeds to step 2 to overwrite the already-recorded packet with the newly-recorded packet and terminate this processing.

If the start address or end address of the already-recorded packet differs from the start address or end address of the newly-recorded packet in step 1, the process proceeds to step 3, where the remaining area of the already-recorded packet that is not overwritten by the new-recorded packet has the length of that area. Another packet corresponding to this is recorded, and the process proceeds to step 2 to overwrite the already-recorded packet with the newly-recorded packet and terminate this processing.

In the above-described processing, if the start address or end address of the already-recorded packet and the newly-recorded packet are different, after the new-recorded packet is overwritten on the already-recorded packet, the remaining packet that is not overwritten by the newly-recorded packet is not overwritten. In another area, another packet corresponding to the length of the area may be recorded.

FIG. 4 is an explanatory diagram showing the format of a packet before and after recording by the recording process shown in FIG.
When the new recording packet 21d is overwritten on the already recorded packets 21a to 21c, if there is a remaining area before and after the new recording packet 21d which is not overwritten by the new recording packet 21d, the new recording packet 21
With the overwriting of d, another packet 21e is recorded at the head of the new recording packet 21d, and another packet 21f is recorded at the tail of the new recording packet 21d.

Therefore, when the packet data is overwritten on the optical disk 1 by the packet write method, the remaining area of the already recorded packet which is not overwritten by the new recording packet is automatically overwritten by another packet, thereby obtaining the new recording packet. The remaining area that is not overwritten is recorded as a separate packet, so that data can be recorded and reproduced in the remaining area, and the recording area can be used effectively without waste.

Next, another process of recording data on an optical disk by the optical disk recording apparatus will be described.
This processing is performed when the controller 9 overwrites the already recorded packet in the track on the recording area of the optical disc 1 with the new recorded packet by the signal processing system 8, and the length of the remaining area which is not overwritten by the newly recorded packet of the already recorded packet. When the length is less than or equal to the total number of blocks used in the link block, the length of the new recording packet is extended to the start address or end address of the already recorded packet and overwritten.

FIG. 5 is a flowchart showing another process of recording data on an optical disk by the optical disk recording apparatus. This processing is performed when a new recording packet is overwritten on a previously recorded packet in a track formed on a recording area of the optical disc 1 (step S 1).
In step 1, the start address (start address) and end address of the already recorded packet and the new record packet in the track are compared, and it is determined whether the start address or the end address is different.

If the start address and end address of the already-recorded packet and the newly-recorded packet are the same in step 11, the process proceeds to step 12, where the already-recorded packet is overwritten with the new-recorded packet, and the process is terminated.

If the start address or end address of the already-recorded packet differs from the start address or end address of the newly-recorded packet in step 11, the process proceeds to step 13 where the length of the remaining area that is not overwritten by the newly-recorded packet is linked. It is determined whether or not the length is less than or equal to the total number of blocks for use.

The determination in step 13 determines whether or not a packet can be recorded in the remaining area. The total number of the link blocks is one link block, four run-in blocks, There are a total of seven blocks of two run-out blocks, and eight blocks including at least one user data block are required to form a packet.

If it is determined in step 13 that the length of the remaining area is not less than the length of the total number of blocks, one packet can be recorded. Another packet corresponding to the length of the area is recorded in the area, and the process proceeds to step 12 to overwrite the already-recorded packet with the newly-recorded packet, and ends this processing.

If the length of the remaining area is equal to or less than the total number of blocks as determined in step 13, no packet can be recorded, so the flow advances to step 15 to set the length of the new recording packet to the start address of the already recorded packet or The process is overwritten by extending to the end address, and the process proceeds to step 12 to overwrite the already-recorded packet with the newly-recorded packet and terminate this processing.

In the above-described processing, if the start address or the end address of the already-recorded packet is different from the start address or the end address of the newly-recorded packet, after overwriting the already-recorded packet with the new-recorded packet, In another area, another packet corresponding to the length of the area may be recorded.

FIG. 6 is an explanatory diagram showing the format of a packet before and after recording by the recording process shown in FIG.
When the new recording packet 21g is overwritten on the already recorded packets 21a to 21c, a remaining area which is not overwritten by the new recording packet 21g occurs before and after the new recording packet 21g, and the length of the remaining area is one packet. If the number of blocks cannot be recorded, a new record packet 21h in which the start address and end address of the new record packet 21g are extended to the start address of the record packet 21a and the end address of the record packet 21c is recorded.

Therefore, when recording packet data on the optical disk 1 by the packet write method, the remaining area which is not overwritten by the new recording packet of the already recorded packet is one.
If the number of blocks is not necessary to generate a packet, extend the start address of the new record packet to the start address of the already recorded packet, or extend the end address of the new record packet to the end address of the already recorded packet. By filling the area of
The remaining area which does not have a length necessary to form a packet can also be made a regular area so that data can be recorded and reproduced.

Next, still another process of recording data on an optical disk by the optical disk recording apparatus will be described. This process is performed when the controller 9 overwrites the already recorded packet in the track on the recording area of the optical disc 1 with the new recorded packet by the signal processing system 8, the remaining area which is not overwritten by the newly recorded packet of the already recorded packet. Allocate meaningful data and overwrite.

FIG. 7 is a flowchart showing still another process of recording data on an optical disk by the optical disk recording apparatus. In this process, when a new recording packet is overwritten on a recorded packet in a track formed on the recording area of the optical disc 1, a step 21 (indicated by "S" in the figure) and a new recorded packet in the track are performed. The start address (start address) of the packet is compared with the end address, and it is determined whether the start address or the end address is different.

If the start address and end address of the already-recorded packet and the newly-recorded packet are both the same as determined in step 21, the process proceeds to step 22, where the already-recorded packet is overwritten with the new-recorded packet, and this processing ends.

If the start address or the end address of the already-recorded packet differs from the start address or end address of the newly-recorded packet in step 21, the process proceeds to step 23, where the length of the remaining area that is not overwritten by the newly-recorded packet is linked. It is determined whether or not the length is less than or equal to the total number of blocks for use.

In the determination in step 23, it is determined whether or not a packet can be recorded in the remaining area. The total number of the link blocks is one link block, four run-in blocks, There are a total of seven blocks of two run-out blocks, and eight blocks including at least one user data block are required to form a packet.

If it is determined in step 23 that the length of the remaining area is not less than the length of the total number of blocks, one packet can be recorded. In the area, another packet corresponding to the length of the area is stored as meaningless data (for example,
All the data is filled with “0”) and recorded, and the process proceeds to step 22 to overwrite the already recorded packet with the newly recorded packet and terminate this processing.

If the length of the remaining area is equal to or less than the total number of blocks in the determination in step 23, no packet can be recorded. Therefore, the flow advances to step 25 to set the length of the new recording packet to the start address of the already recorded packet or It extends to the end address, overwrites the extended part by filling it with meaningless data (for example, all “0”), and proceeds to step 22 to overwrite the already-recorded packet with the newly-recorded packet and terminate this processing. .

In the above-described processing, if the start address or the end address of the already-recorded packet is different from the start address or end address of the newly-recorded packet, after overwriting the already-recorded packet with the new-recorded packet, In another area, another packet corresponding to the length of the area may be recorded.

In this manner, meaningless data "0" is recorded in each of the new recording packets 21e and 21f shown in FIG. 4, and the remaining data which cannot be overwritten by the new recording packet 21g of the new recording packet 21h shown in FIG. In this area, meaningless data "0" can be recorded.

Therefore, at the time of reproduction after recording the new recording packet on the optical disc 1, meaningless data is recorded in the remaining area with respect to the meaningful data recorded in the new recording packet. The newly recorded packet and the remaining area can be easily distinguished.

Next, still another error processing at the time of rewriting information on the optical disk in the optical disk recording apparatus will be described. In this process, the controller 9
When the signal processing system 8 overwrites the already recorded packet in the track on the recording area of the optical disc 1 with the new recording packet, when the area of the new recording packet exceeds the track area, the overwriting is stopped and the external interface 10 is disconnected. Report an error to the host computer via

FIG. 8 is a flowchart showing still another process of recording data on an optical disk by the optical disk recording apparatus. This processing is performed when a new recording packet is overwritten on a previously recorded packet in a track formed on the recording area of the optical disc 1 (step "S" in the figure).
It is determined at 31) whether or not the area of the new recording packet exceeds the area of the track.

If the area of the new recording packet exceeds the track area in the determination of step 31, the process proceeds to step 37 to stop overwriting the new recording packet, report an error to the host computer, and end this processing. .

If the area of the new recording packet does not exceed the area of the track as determined in step 31, the process proceeds to step 32, where the head address (start address) and end address of the already recorded packet in the track and the new recording packet are compared. Then, it is determined whether the start address or the end address is different.

If it is determined in step 32 that the start address and the end address of the already-recorded packet and the newly-recorded packet are the same, the process proceeds to step 33 to overwrite the already-recorded packet with the newly-recorded packet, and ends this processing.

If it is determined in step 32 that the start address or end address of the already-recorded packet is different from the start address of the newly-recorded packet, the process proceeds to step 34, where the length of the remaining area that is not overwritten by the newly-recorded packet of the already-recorded packet is linked. It is determined whether or not the length is less than or equal to the total number of blocks for use.

In the determination in step 34, it is determined whether or not a packet can be recorded in the remaining area. The total number of the link blocks is one link block, four run-in blocks, There are a total of seven blocks of two run-out blocks, and eight blocks including at least one user data block are required to form a packet.

If it is determined in step 34 that the length of the remaining area is not less than the length of the total number of blocks, one packet can be recorded. In the area, another packet corresponding to the length of the area is stored as meaningless data (for example,
All the data is filled with "0") and recorded, and the process proceeds to step 33 to overwrite the already-recorded packet with the newly-recorded packet and terminate this processing.

If the length of the remaining area is equal to or less than the total number of blocks in the judgment of step 34, no packet can be recorded. Therefore, the flow advances to step 36 to set the length of the newly recorded packet to the start address of the already recorded packet or It is extended to the end address, the extended part is overwritten by filling it with meaningless data (for example, all are “0”), and the process proceeds to step 33 to overwrite the already-recorded packet with the newly-recorded packet and terminate this processing. .

In the above-described processing, if the start address or the end address of the already-recorded packet is different from the start address or the end address of the newly-recorded packet, after the new-recorded packet is overwritten on the already-recorded packet, the remaining not-overwritten by the newly-recorded packet is not overwritten. In another area, another packet corresponding to the length of the area may be recorded.

Therefore, when overwriting the optical disk 1 by the packet write method, when the area of the new recording packet exceeds the area of the track, the overwriting of the new recording packet on the already recorded packet is stopped to prevent the recording area from becoming illegal. Thus, it is possible to prevent the optical disk 1 from being used as an unauthorized medium.

[0083]

As described above, according to the optical disk recording apparatus of the present invention, an unrecordable / reproducible area is prevented from being generated in a recording area of a rewritable optical disk due to overwriting of a packet by a packet write method. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an optical disk recording device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a packet format in a packet write system by the optical disk recording device shown in FIG. 1;

FIG. 3 is a flowchart showing a recording process on an optical disc by the optical disc recording device shown in FIG. 1;

FIG. 4 is an explanatory diagram showing a format of a packet before and after recording by the recording process shown in FIG. 3;

FIG. 5 is a flowchart showing another recording process on the optical disc by the optical disc recording apparatus shown in FIG. 1;

FIG. 6 is an explanatory diagram showing a format of a packet before and after recording by the recording process shown in FIG. 5;

FIG. 7 is a flowchart showing still another recording process on the optical disc by the optical disc recording apparatus shown in FIG. 1;

8 is a flowchart showing still another recording process on an optical disc by the optical disc recording apparatus shown in FIG.

[Explanation of symbols]

 1: optical disk 2: motor 3: optical pickup 4: coarse motor 5: rotation control system 6: coarse motor control system 7: optical pickup control system 8: signal processing system 9: controller 10: external interface 21, 21a to 21h : Packet 22: Link block 23: Run-in block 24: User data block 25: Run-out block

Claims (4)

[Claims] 1. A packet write type optical disk recording apparatus that forms a plurality of tracks in a recording area of a rewritable optical disk, divides each track into a plurality of packets, and collectively records data for each packet. An optical disc recording apparatus, further comprising: means for overwriting a remaining packet that is not overwritten by a new recording packet of a previously recorded packet with a new packet when overwriting a previously recorded packet in the track. 2. The optical disk recording apparatus according to claim 1, wherein when the length of the remaining area is equal to or less than the total number of blocks used in the link block, the length of the new recording packet is recorded. An optical disk recording apparatus, comprising: means for extending the start address or the end address of a packet to overwrite. 3. The optical disk recording apparatus according to claim 1, further comprising means for assigning meaningless data to a remaining area of the already recorded packet which is not overwritten by a new recording packet and overwriting the remaining area. Optical disk recording device. 4. The optical disk recording apparatus according to claim 1, further comprising: means for stopping the overwriting and reporting an error when an area of the new recording packet exceeds an area of a track. An optical disk recording device characterized by the above-mentioned.