JPH1186292A - Write once optical disk equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable correct addition of data without conducting an operation of discharge-resetting of an optical disk. SOLUTION: An optical pickup 16 reads out recorded data from an optical disk 12 set in a loading part 14 and records additional data on the optical disk 12. An internal memory 18 stores track information on the recorded data. A control part 20 reads out the track information on the recorded data on the occasion when the optical disk 12 is loaded in the loading part 14, and stores it in the internal memory 18. On the occasion when the additional data inputted are recorded on the optical disk 12, the additional data are recorded in an unrecorded area adjacent to the outer periphery side of a recorded area of the optical disk 12 on the basis of the track information in the internal memory 18 and the track information on the additional data is recorded in a PMA area of the optical disk 12. After test recording of the additional data is executed, moreover, the track information of the optical disk 12 is stored in the internal memory 18 without conducting an operation of resetting of the optical disk 12, before actual recording on the optical disk 12 is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a write-once optical disc apparatus capable of sequentially recording additional write data on an optical disc.

[0002]

2. Description of the Related Art A general write-once type optical disk apparatus 10 has a schematic configuration as shown in FIG. 7, which includes a mounting section 14 for mounting an optical disk 12 (in this example, a configuration mounted by a tray 14a as an example), An optical pickup 16 for reading recorded data from the optical disc 12 and recording additional data on the optical disc 12; an internal memory 18 for storing track information including a recording start time and a recording end time of the recorded data on the optical disc 12; And a control unit 20 that controls the optical pickup 16 and the internal memory 18 by taking in additional data input from the CPU.

[0003] There are mainly two methods for recording the write-once data of the write-once optical disc device 10 as follows.
One of them is called a disk-at-once method. When recording additional data on the optical disk 12, once the recording operation is started, the input data (the additional data itself, the recording start time of this additional recording data, and the recording end time). The recording operation is not stopped until the end of the recording operation. As shown in FIG. 8, the input data is recorded from the inner circumference to the outer circumference in the order of the lead-in area of the optical disk 12, the program area where the additional write data is actually recorded, and the lead-out area.
In this method, the ordinary write-once optical disc device only performs an operation of sequentially recording input data while sequentially tracing tracks from the inner periphery of the optical disc 12 to the outer periphery. ,
The track information such as the recording start time and the recording end time of the recorded data recorded on the optical disk 12 is not stored as in the case of the track-at-once method described later. That is, the internal memory 18 does not change at all by the recording operation on the optical disk 12.

[0004] The other is called a track-at-once method, in which the recording order is different from that of the disk-at-once method. That is, in the case of this method, the optical disk 1
First, the additional data itself is recorded in the program area of No. 2,
Next, in this mode, recording is performed in the order of lead-out, lead-in or lead-in and lead-out after, and the recording operation is completed.

The track-at-once method will be described in more detail with reference to FIG. This method was originally devised for sequentially adding data such as audio, and the sequence is shown below. The first additional data (TNO1) is recorded on the first track. At the end of recording, the PMA (Program Memory A)
Track information such as the recording start time and recording end time of TNO1 is recorded in (rea)) The next additional data (TNO2) is recorded in the second track. At this time, the data of the second track is recorded with a predetermined gap on the outer peripheral side of the recording area of the data of the first track, and when the recording is completed, the track information of the second TNO2 is added to the PMA of the optical disk together with the track information of the TNO1. In this manner, the additional write data is recorded on all the tracks, and after the track information of the additional write data has been recorded on the PMA, the readout of the optical disk is recorded. The PMA information of the optical disk is read into the internal memory.
Based on this, the TOC information is created and recorded in the lead-in area of the optical disk. The order is reversed, the TOC information is created first and recorded in the lead-in area of the optical disk, and then the lead-out is recorded. In some cases.

Here, in the case of a write-once optical disk, once data is written, subsequent data cannot be corrected. For this reason, recently, in the case of the track-at-once method for the purpose of being careful, the control unit 20 performs a test recording operation of the additional write data before the additional write data is actually recorded on the optical disc 12, and the additional write data is normally recorded. Judgment is made as to whether it is possible, and if the result is good, actual recording is performed. In this test recording operation, the control unit 20 causes the optical pickup 16 to trace on the track in the same manner as the normal recording operation, but does not output the laser power for recording from the optical pickup 16 and In a state in which no data is recorded, a trial recording operation is performed on all data to be written once. By this test recording operation, it is possible to judge whether or not the trace of the optical pickup 16 is deviated on the way due to, for example, surface runout or eccentricity of the optical disc and no error occurs. Also, since the optical pickup 16 actually traces the track,
In which area of the optical disc 12 (the area represented by the recording start time and the recording end time) the data to be written is recorded is determined by the ATIP (Absolute Time In P
regroove), it is possible to accurately determine whether data can be recorded without missing data. If the result of the test recording operation is OK, an actual recording operation is performed on the optical disc 12 next.

[0007]

However, the above-mentioned conventional write-once optical disc apparatus has the following problems.
As described above, in the case of the test recording operation, in the current optical disk device 10, the laser power of the optical pickup 16 becomes weak, and the recording start time of the already recorded data recorded in the PMA area or the lead-in area of the optical disk 12 is reduced. In order to perform the same operation as the normal recording operation except that the track information of the recording end time is not updated, the control unit 20 performs the optical pickup from the ATIP of the optical disc 12 during the test recording operation of the additional recording data. The track information of the write-once data read via
The data is stored in the internal memory 18 as in the actual recording operation. The contents of the internal memory 18 are changed from (a) of FIG. 10 to (b). Here, in the conventional optical disk device 10, when the optical disk 12 is mounted, the control unit 20 writes data in the lead-in area of the optical disk 12 in the case of the disk-at-once method, and in the case of the track-at-once method. The data in the PMA area is read and stored in the internal memory 18. The data to be recorded is additionally recorded after the already recorded area of the optical disc 12 based on the track information stored in the internal memory 18.

Therefore, when the additional recording data is to be actually recorded after the test recording operation, if the contents of the internal memory 18 are left as they are (the state of FIG. 10B),
As shown in FIG. 1, the track information of the PMA area of the optical disk 12 on which no additional write data is actually recorded does not match the track information of the internal memory 18 updated by the test recording operation. Occurs that the additional write data is not recorded in the correct area of the optical disc 12. For example, the TNO
Even if it is attempted to record 1 first, the track information of TNO1 read from the optical disc 12 at the time of test recording is recorded as recorded data in the internal memory 18. Since the optical disc device 10 records additional data based on the track information in the internal memory 18, the actual recording of the TNO 1 is added to the outer peripheral area B of the recorded area A in which the recorded data is recorded. Will be done. Therefore, a situation occurs in which TNO1 is not recorded at a correct position.

In order to avoid this problem, there has conventionally been a request for test recording (step 100) as shown in the flow chart of FIG.
2) After that, when it is determined that the actual recording operation is to be performed (step 104), the optical disk 12 is once ejected from the mounting unit 14 of the optical disk device 10 before the actual recording operation is performed (step 108), and Is mounted on the mounting section 14, the track information of the recorded data in the PMA area of the optical disk 12 is read into the internal memory 18, and the track information recorded on the internal memory 18 and the track information recorded on the optical disk 12 are matched (step 10).
6). However, after performing the test recording operation and before performing the actual recording operation, it is troublesome to perform the operation of ejecting and remounting the optical disk from the optical disk device, and the workability is not good. is there.

Further, as shown in FIG. 13, even in the disk-at-once system in which the contents of the internal memory 18 of the optical disk apparatus 10 are not changed even when a recording operation is performed, recording is performed on the optical disk 12 by dividing it into several times. May be performed. In such a case, if recording of new additional data (TNO2) is to be performed while the optical disk 12 is mounted, the previous additional data (TNO1) is actually recorded on the optical disk 12 as shown in FIG. However, the track information in the internal memory 18 of the optical disk device 10
2 is the track information (contents without additional write data) read from the second additional write data (TNO).
An attempt was made to record the next additional write data (TNO2) in the area A where 1) was recorded, and an error occurred because writing was not possible. Therefore, when one data (TNO1) is recorded on the optical disc 12 and then the next data (TNO2) is additionally recorded, as shown in FIG. 15, the lead-in of the optical disc 12 on which the data is actually recorded and updated is performed. In order to make the track information of the area (TOC information including the recording start time and the recording end time) coincide with the contents of the internal memory 18 of the optical disk device, after performing the operation of recording one additional write data (S200), the optical disk 1 must be written.
2 was once ejected from the mounting unit 14 and mounted again (S202), the track information was updated, and thereafter, the recording operation of new additional data was performed (S204). As a result, new additional data is recorded in the area B. Therefore, there is a problem that the optical disk 12 must be ejected and remounted, which is troublesome.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a write-once optical disc apparatus capable of correctly appending data without performing an operation of ejecting and reloading an optical disc. is there.

[0012]

The present invention has the following arrangement to achieve the above object. That is, the invention according to claim 1 is a mounting section for mounting an optical disk, an optical pickup for reading recorded data from the optical disk and recording additional recording data on the optical disk, and recording the recorded data on the optical disk. An internal memory for storing track information including a start time and a recording end time, and when the optical disk is mounted on the mounting unit, the track information of the recorded data is read from the optical disk and stored in the internal memory. At the same time, when recording the additional recording data input from the outside on the optical disk, additional recording is performed on an unrecorded area adjacent to the outer peripheral side of the already recorded area of the optical disk on which the already recorded data is recorded, based on the track information in the internal memory. Data is recorded by controlling the optical pickup,
A write-once optical disc device, further comprising: a control unit for recording track information of write-once data in a PMA area of the optical disc, wherein the control unit performs test recording of the write-once data on the optical disc, Before actually recording data on the optical disk, the track information of the already recorded data recorded in the PMA area of the optical disk is read out without performing the ejection / reloading operation of the optical disk mounted on the mounting portion. It is stored in the internal memory.

According to a second aspect of the present invention, there is provided a mounting portion for mounting an optical disk, an optical pickup for reading recorded data from the optical disk and recording additional recording data on the optical disk, and the recorded information on the optical disk. An internal memory for storing track information including a recording start time and a recording end time of data, and, when the optical disc is mounted on the mounting section, reading the track information of the recorded data from the optical disc to read the internal memory. When recording the additional recording data inputted from the outside on the optical disk, the track information of the additional recording data is recorded in the lead-in area of the optical disk, and the recorded information is recorded based on the track information in the internal memory. Write additional data to an unrecorded area adjacent to the outer circumference of the already recorded area of the optical disc where data is recorded. In write-once optical disk apparatus to control the serial optical pickup and a control unit for recording,
After recording the additional write data on the optical disk, the control unit performs an ejection / reload operation of the optical disk mounted on the mounting unit before recording the next input write data on the optical disk. The track information of the recorded data recorded in the lead-in area of the optical disk is read out and stored in the internal memory.

Thus, the control unit automatically reads the track information of the recorded data of the optical disk while the optical disk is mounted on the mounting unit, without the user having to eject / reload the optical disk every time, and reads the track information of the optical disk. The track information in the internal memory is stored in the optical disk before recording new write data after recording the additional write data after the test recording operation or before recording new additional write data after recording the additional write data by the disk-at-once method. It always matches the track information recorded in the PMA area or lead-in area.
Therefore, additional data can be recorded in a correct area of the optical disc.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the write-once optical disc apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. The same components as those described in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

First, the outline of the configuration of the write-once optical disc apparatus 10 is the same as that of the configuration of FIG. 7 described in the conventional example, and has a mounting section 14 on which the optical disc 12 is mounted. As a specific structure of the mounting portion 14, a tray-type mounting structure and a cartridge-type mounting structure are known. The optical (laser) pickup 16 has a function of reading recorded data from the optical disc 12 mounted on the mounting section 14 and recording additional recording data on the optical disc 12. The power of the laser can be changed and is switched between reading and recording. The internal memory 18 is configured using a semiconductor memory, and stores the recording start time and the recording end time of the recorded data of the optical disc 12.

The control unit 20 is configured using a microcomputer, and when the optical disk 12 on which additional data is to be recorded is mounted on the mounting unit 14, the optical disk 12
Then, the track information such as the recording start time and the recording end time of the recorded data is read out and stored in the internal memory 18. When recording the additional recording data input from the outside on the optical disk 12 by the track-at-once method, based on the track information in the internal memory 18, the recorded data is recorded in an unrecorded area adjacent to the outer peripheral side of the optical disk 12. The additional recording data is recorded by controlling the optical pickup 16. At the same time, the track information of the write-once data is recorded in the PMA area of the optical disk 12. The characteristic point is that, in order to record one write-once data on the optical disc 12, test recording is first performed on the write-once data, and then the optical disc 12 is mounted on the mounting portion 14 before actual recording is performed on the optical disc 12. The PM of the optical disc 12 can be kept as it is, that is, without performing the operation of ejecting / reloading the loaded optical disc 12.
The point is that track information of recorded data (one or more recorded data is additionally recorded as recorded data) recorded in the area A can be read and stored in the internal memory 18.

When recording additional data by the disc-at-once method, the control unit 20 includes track information and the like to be recorded in the lead-in area and the lead-out area together with the additional data itself in the data to be additionally recorded. Since data is also included, first, track information such as a recording start time and a recording end time of the additional recording data is additionally recorded in the lead-in area, and then, a recording end time in the internal memory 18 is recorded in the program area. Based on the recorded data of the optical disc 1
The additional recording data is recorded by controlling the optical pickup 16 in an unrecorded area adjacent to the outer peripheral side of No. 2. Finally, the lead-out area is recorded. The feature of the disc-at-once method is that after recording one write-once data on the optical disc 12 and before recording the next input write-once data on the optical disc 12, the optical disc mounted on the mounting portion 14 is recorded. The point is that the track information of the recorded data recorded in the lead-in area of the optical disk 12 is read out and stored in the internal memory 18 without performing the operation of ejecting / reloading the 12.

Next, a procedure for recording data in the optical disk device having the above configuration will be described in detail. First, a data recording procedure using the track-at-once method with a test recording operation will be described with reference to FIGS. When the optical disk 12 is mounted on the mounting unit 14, the control unit 20
Controls the optical pickup 16 to control the PM of the optical disc 12
The track information such as the recording start time and the recording end time of the recorded data is read from the area A and stored in the internal memory 18. Note that the optical disc 12 already has one data (TN
O1) is recorded, and track information 1 is stored in the internal memory 18 (FIG. 2A). When the additional recording data (TNO2) to be newly recorded is input and the test recording is selected (S300), the control unit 20 first controls the optical pickup 16 to perform a test recording operation on the optical disk 12 (S302). . While performing the test recording operation, the control unit 20 reads the track information 2 such as the recording start time and the recording end time of the additional recording data (TNO2) from the ATIP of the optical disc 12, and stores the TNO in the internal memory 18.
2 is stored in addition to the track information 1 of FIG.
(B)).

Next, after the test recording operation is completed, when an instruction to actually record TNO2 is input to the control unit 20 (S304), the condition that the test recording has been performed and the instruction of the actual recording operation are input. Because the conditions that have been
The control unit 20 detects the mounting status of the optical disk 12 and, if the optical disk 12 is mounted,
The track information (track information 1) of the recorded data is read from the PMA area 2 and stored in the internal memory 18 (S306). In this case, the PM of the optical disc 12 is actually
The data recorded in the area A includes the recording start time and the recording end time of TNO1, and does not include the recording start time and the recording end time of TNO2. Therefore, the internal memory 1
8 is in the state of FIG. 2 (c). Next, the control unit 20
Reads the track information and the recording end time of the already recorded data stored in the internal memory 18, and reads the unrecorded area on the outer peripheral side of the recorded area of the data indicating the recording end time of the last recorded data. Next, TNO2 is recorded with a slight gap from the already recorded area (S308).
Here, the last recorded data of the already recorded data is TNO1 in the case of the present embodiment,
Following TNO1, TNO2 can be added and recorded. If the optical disk 12 is closed when TNO2 is added, a lead-out is recorded after TNO2 as shown in FIG. After the recording of TNO2, additional recording data is further input without closing the optical disk 12, and when additional recording is to be performed on the optical disk 12, the above steps (S300 to S380) are repeated to eject / reload the optical disk 12. Even if it is not performed, data can be continuously recorded. In this case, the lead-out is recorded after the last additional data.

Next, a data recording procedure by the disk-at-once method will be described with reference to FIGS.
It is assumed that no additional recording data has been recorded on the optical disc 12 yet. When the optical disk 12 is mounted on the mounting unit 14 and the disk-at-once method is selected (S4).
00), the control unit 20 controls the optical pickup 16 to read the recording start time and the recording end time of the recorded data from the lead-in area of the optical disc 12 and try to store them in the internal memory 18. However, since the additional recording data has not been recorded, there is no lead-in area for the already recorded additional recording data. When the lead-in area cannot be detected, the control unit 20 determines that the additional recording data is in an unrecorded state, and records data indicating that there is no track information in the internal memory 18 (FIG. 5A). Additional data to be recorded (TNO
When 1) is input, the control unit 20 firstly controls the optical disc 1
The track information of TNO1 is recorded in the lead-in area of No. 2 and the unrecorded area on the outer peripheral side of the recorded area indicating the recording end time of the last data of the recorded data continuously stored in the internal memory 18. Then, TNO1 is recorded following the already recorded area. In this case, since there is no recorded data, the lead-in of TNO1, the program of TNO1 itself, and the lead-out of TNO1 are additionally recorded from the beginning of the program area, and finally, the lead-out area of the optical disk 12 is recorded (S402). . Since the content of the internal memory 18 is data recording by the disk-at-once method, even if TNO1 is recorded, it is not updated.
The contents read (without track information) when the optical disk 12 is mounted remain as they are (FIG. 5B). Further, the control unit 20 sets a flag indicating that data has been recorded by the disc-at-once method.

Subsequently, when new additional data (TNO2) is input by the disk-at-once method, the track-at-once method, or another method, the control unit 20 determines that the data has been recorded by the disk-at-once method. The condition (the state of the flag) is detected, and the data (TOC information including the recording start time and the recording end time of the recorded data) of the latest recorded data in the recorded data of the optical disc 12 is read. The track information of the latest recorded data is stored in the internal memory 18 (S404). In this case, since one TNO1 is recorded, the track information of the TNO1 is stored in the internal memory 18 (FIG. 5C). The control unit 20 calculates and determines the recording start time of the additional recording data (TNO2) to be recorded next based on the track information of TNO1. In this procedure, the recording end time of the lead-out is determined by adding the recording time of the lead-out of the TNO1 recorded in the track information to the recording time of the lead-out determined in advance by the standard. Thus, the recording start time of the additional recording data to be recorded next can also be obtained.

If a plurality of recorded data has already been recorded on the optical disc 12, the lead-in area of the first recorded data is read, and the recording end time of the lead-out of the recorded data is read by the above procedure. And reads data from the optical disk 12 from the recording end time. This allows
The lead-in area of the next recorded data can be read. Hereinafter, by repeating this procedure, the recording end time of the lead-out of the recorded data is sequentially obtained, and finally the recording start time of the additional recording data to be recorded next is obtained. When a plurality of data is additionally recorded on one optical disc 12 by the disc-at-once method, the recording start time of the new additionally recorded data is finally obtained by sequentially reading the lead-in area of the already recorded data as described above. Is also good,
A reference table of recorded data, such as a track-at-once PMA, is provided on the inner periphery of the optical disc 12, and new additional data is recorded following the latest recorded data based on the reference table. You may do it.

Next, similarly to the recording of TNO1, TNO2
Is recorded on the optical disc 12. In the present embodiment, TNO
No. 2 shall be recorded by the disk-at-once method. Since the content of the internal memory 18 has been updated to a state indicating that TNO1 has been recorded,
Following the lead-out of TNO1 (lead-out 1), the lead-in 2 of TNO2, TN
O2 itself, TNO2 lead-out 2 is recorded (S
406). When additional recording data is further continuously input and additional recording is performed on the optical disc 12, the above-described steps S400 to S406 are performed.
By repeating the above steps, data can be recorded continuously without ejecting / reloading the optical disk 12.

Thus, the control unit 20 automatically reads the contents of the optical disk 12 while the optical disk 12 is mounted on the mounting unit 14 without the user having to eject and re-mount the optical disk 12 each time, thereby reading the contents of the internal memory. 18 so that when the actual recording is performed after the test recording operation,
Before recording new write-once data by the disk-at-once method, the track information in the internal memory 18 always matches the track information recorded in the PMA area or the lead-in area of the optical disk. Therefore, the additional write data can be recorded in a correct area of the optical disc 12.

In the case where the recording of additional recording data by the disk-at-once method and the recording of additional recording data by the track-at-once method are performed on one optical disk 12 in combination, the already recorded data recorded by the track-at-once method is used. A PMA area for recording the recording start time and the recording end time is provided on the inner periphery of the optical disk 12 as in the case of the track-at-once method. This allows P
From the information recorded in the MA area and the information recorded in the lead-in area of the additional data by the disc-at-once method, the recording start time of the new additional data can be calculated.

As described above, various preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0028]

According to the write-once optical disc apparatus of the present invention, the control section automatically controls the optical disc while the optical disc is mounted on the mounting section, without the user having to eject and remount the optical disc each time. Since the track information of the already recorded data is read and stored in the internal memory, it is possible to use the track-at-once method when actually recording additional data after the test recording operation, or when recording the additional data using the disk-at-once method. Before recording additional data, the track information in the internal memory is
It always matches the track information recorded in the MA area or lead-in area. Therefore, there is an effect that the write-once data can be quickly recorded in a correct area of the optical disc.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a track-at-once recording operation including test recording of a write-once optical disc apparatus according to the present invention.

FIG. 2 is an explanatory diagram for explaining a state of an internal memory of FIG. 1;

FIG. 3 is an explanatory diagram showing a recording state of an optical disc to which data is added by the write-once optical disc apparatus of FIG. 1;

FIG. 4 is a flowchart showing a recording operation of a write-once optical disc apparatus according to the present invention in a disc-at-once system.

FIG. 5 is an explanatory diagram for explaining a state of an internal memory in FIG. 4;

FIG. 6 is an explanatory diagram showing a recording state of an optical disc to which data is added by the write-once optical disc apparatus of FIG. 4;

FIG. 7 is an explanatory diagram showing a schematic configuration of a portion related to a data reading / recording function of a general write-once optical disc device.

FIG. 8 is an explanatory diagram showing a data layout of an optical disk according to a disk-at-once method.

FIG. 9 is an explanatory diagram showing a data layout of an optical disk according to a track-at-once method.

FIG. 10 is an explanatory diagram for describing a state of an internal memory of a write-once optical disc device in the case of a conventional track-at-once method.

FIG. 11 shows a conventional track-at-once method.
FIG. 8 is an explanatory diagram showing a data layout of the optical disc when additional data is recorded with the optical disc mounted after test recording.

FIG. 12 is a flowchart showing a conventional track-at-once recording operation.

FIG. 13 is an explanatory diagram for explaining a state of an internal memory of a write-once optical disc device in the case of a conventional disc-at-once method.

FIG. 14 shows a conventional disc-at-once method.
FIG. 4 is an explanatory diagram showing a data layout of an optical disk when recording additional write data with the optical disk mounted after test recording.

FIG. 15 is a flowchart showing a conventional disc-at-once recording operation.

[Explanation of symbols]

 12 optical disk 14 mounting section 16 optical pickup 18 internal memory 20 control section

Claims (2)

[Claims] A mounting section for mounting an optical disc; an optical pickup for reading recorded data from the optical disc and recording additional recording data on the optical disc; a recording start time and a recording end of the recorded data on the optical disc; An internal memory for storing track information including time; when the optical disc is mounted on the mounting section, the track information of the recorded data is read from the optical disc and stored in the internal memory; When recording the added write data on the optical disc, the optical pickup picks up the additional write data in an unrecorded area adjacent to the outer peripheral side of the already recorded area of the optical disc on which the already recorded data is recorded, based on the track information in the internal memory. And record the track information of the additional recording data in the PMA area of the optical disk. A write-once optical disc apparatus comprising: a control unit for recording the write-once data on the optical disc after test-recording the write-once data on the optical disc; The PM of the optical disk without performing the operation of ejecting / reloading the optical disk mounted on the optical disk.
A write-once optical disc device, wherein the track information of the recorded data recorded in the area A is read and stored in the internal memory. 2. A mounting section for mounting an optical disk, an optical pickup for reading recorded data from the optical disk and recording additional recording data on the optical disk, a recording start time and a recording end of the recorded data on the optical disk. An internal memory for storing track information including time; when the optical disc is mounted on the mounting section, the track information of the recorded data is read from the optical disc and stored in the internal memory; When recording the added write-once data on an optical disc,
Track information of the write-once data is recorded in the lead-in area of the optical disc, and based on the track information in the internal memory, the write-once data is recorded on an unrecorded area adjacent to the outer circumference of the already-recorded area of the optical disc on which the already-recorded data is recorded. A write-once optical disc device, comprising: a control unit that controls the optical pickup to record the write-once data on the optical disc after the write-once data is recorded on the optical disc. Before recording on the optical disc, the track information of the recorded data recorded in the lead-in area of the optical disc is read out and stored in the internal memory without performing an ejection / re-attachment operation of the optical disc mounted on the mounting section. A write-once optical disc device.