JP2001110055A - Method of drawing recording completion processed rewritable optical disk and writable optical disk recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the waiting time until DRAW of a new track is started when the new track is DRAWed on a finalized CD-RW disk. SOLUTION: Related to the CD-RW dusk that effective information are recorded respectively on a read-in area, a program area and a read-out area, and the recording is completed, the new track is superscribed/DRAWed succeedingly the recording terminal position of the recorded effective track of the program area. After the DRAW is ended, the read-in information of the read-in area is erased. Or, the read-in information is superscribed with the new read-in information equivalent to the contents after DRAW.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for additionally writing a new track on a rewritable optical disc such as a CD-RW (CD rewritable) disc which has been subjected to a recording completion process, and a rewritable optical disc recording apparatus for implementing the method. This is a reduction in the waiting time until the start of adding a new track.

[0002]

2. Description of the Related Art For recording on a CD-R (CD recordable) disc or CD-RW disc, a track (music, etc.) is recorded in a program area, and after the recording is completed, table of contents information on the track is stored in a PMA area (Program Memory). Area: Temporary storage area for table of contents information on recorded valid tracks)
It is performed by recording in. When a new track is to be added, information on the PMA area (PMA information) is read, a recording end position of a recorded effective track in the program area is searched based on the PMA information, and a new track is added following the recording end position. Write over. A CD-R disc or a CD-RW disc recorded in this manner is a CD-R disc.
The data can be directly reproduced by a recording device or a CD-RW recording device. However, in order to reproduce the data by a reproduction-only CD player, a recording completion process is required. The record completion process includes lead-in,
The lead-out is recorded (that is, lead-in information such as TOC (Table of Contents) is recorded in the lead-in area, and lead-out information of a predetermined format is recorded in the lead-out area), and the recording is completed. This is a process of closing the disc (hereinafter, this process is referred to as “finalization”).

[0003] After a CD-R disc has been finalized, no new tracks can be added to it at all.
-The recording complete state is released even after the RW disc is finalized (hereinafter, the processing of releasing the recording completed state is referred to as "unfinalizing").
New tracks can be added. FIG. 2 shows the procedure for appending a finalized CD-RW disc. (I)
Is the disc format of the finalized CD-RW disc. A lead-in area is formed on the inner circumference side and a lead-out area is formed on the outer circumference side, adjacent to the program area in which tracks 1 and 2 (music 1 and music 2) are recorded. In the lead-in area, the TOC of tracks 1 and 2
Lead-in information such as information is recorded. Lead-out information of a predetermined format is recorded in the lead-out area. PMA information such as TOC information of the tracks 1 and 2 and disk identification information is recorded in the PMA area on the inner peripheral side of the lead-in area. When unfinalization is commanded, the entire lead-in area and lead-out area are erased (the logical erase format is recorded) as shown in (ii). Next, as shown in (iii), the track 3 follows the recording end position of the recorded effective track.
(Song 3) is added, and after the recording of the track 3 is completed, the PMA
Following the recording end position of the recorded PMA information in the area, the TOC information of track 3 is recorded. When the finalization is commanded, as shown in (iv), lead-in information corresponding to the new recording content is recorded in the lead-in area, and lead-out information is recorded in the lead-out area, and the CD-
The recording of the RW disc is completed again.

[0004]

According to the conventional write-once method, the lead-in area and the lead-out area are erased by unfinalizing (FIG. 2 (ii)) for about 2.5 minutes and about 1. 5 minutes, about 4 minutes in total,
The user had to wait while starting to add a new track. SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art and reduces the waiting time until the start of additional recording of a new track, and a method of recording a finalized rewritable optical disk, and a rewritable optical disk recording apparatus for implementing the method It is intended to provide.

[0005]

According to the present invention, there is provided an additional recording method comprising:
For a rewritable optical disc in which valid information is recorded in the lead-in area, program area, and lead-out area, and recording is completed, a new track is overwritten following the recording end position of the recorded valid track in the program area. Then, after the additional writing, the lead-in information in the lead-in area is erased. According to this,
Since the lead-out area is erased when a new track is overwritten, the trouble of independently erasing the lead-out area before additional recording is saved, and the lead-in area is erased after additional recording. It is not necessary to erase the area, and the waiting time until the start of the additional recording can be reduced. After the new track is added and before the lead-in information is erased, the recording for adding the table of contents information about the new track to the temporary storage area of the table of contents information about the recorded effective track of the rewritable optical disc is performed (the recording is performed). The table of contents information on a new track is added after the recording end position of the temporary storage area, or the entire temporary storage area is overwritten with the table of contents information on all recorded valid tracks including the new track.)

Another additional recording method according to the present invention is directed to a rewritable optical disk in which effective information is recorded in a lead-in area, a program area, and a lead-out area, respectively, and recording is completed. The new track is overwritten after the recording end position of the effective track and is additionally written, and after the additional writing, new lead-in information corresponding to the content after the additional writing is overwritten in the lead-in area. And a new lead-out area is formed by recording the lead-out information following the recording end position of the additionally written track. According to this, the lead-out area is deleted when new tracks are overwritten, and the lead-in area is deleted when new lead-in information is overwritten. This eliminates the need for erasing, and can reduce the waiting time before starting additional writing. Note that after the new track is added and before the new lead-in information is overwritten, recording is performed to add the table of contents information on the new track to the temporary storage area of the table of contents information on the recorded valid track of the rewritable optical disc. be able to.

[0007] The rewritable optical disk recording apparatus of the present invention comprises:
On a rewritable optical disk in which valid information is recorded in a lead-in area, a program area, and a lead-out area, and recording is completed, additional recording instruction means for instructing additional recording of a new track; Control means for overwriting a new track following the recording end position of the recorded effective track in the area and additionally writing, and after erasing, erasing the lead-in information in the lead-in area. is there. In addition, the control means,
After adding a new track and before erasing the lead-in information, control is performed to perform recording for adding the table of contents information relating to the new track to the temporary storage area of the table of contents relating to the recorded valid track of the rewritable optical disc. can do.

Another rewritable optical disk recording apparatus according to the present invention provides a new track for a rewritable optical disk in which effective information is recorded in each of a lead-in area, a program area, and a lead-out area and recording is completed. Write-instruction means for instructing additional recording, recording completion processing reserving means for reserving the recording completion processing after the end of the additional recording of the new track, and Subsequently, a new track is overwritten and additional recording is performed, and upon receiving the recording completion reservation during or before the additional recording, new lead-in information corresponding to the content after the additional recording is overwritten in the lead-in area after the additional recording. The original lead-in information is deleted, and the lead-out information is recorded following the recording end position of the added track, and a new read-out is performed. Those formed by and a control means for controlling to form the out area. The control means adds the table of contents information about the new track to the temporary storage area of the table of contents information about the recorded valid track of the rewritable optical disk after the new track is added and before the new lead-in information is overwritten. Control for recording can be performed.

[0009]

(Embodiment 1) An embodiment in which the present invention is applied to an audio CD recorder will be described. The audio CD recorder has a recording input terminal, and converts an audio signal input from the recording input terminal into a CD-format CD-R disc or CD-RW.
It is to be recorded on a disc. FIG. 1 shows a system configuration of an audio CD recorder 10 according to the present invention. The optical disk 12 (CD-R disk or CD-RW disk) is driven to rotate by a spindle motor 14, and information is written (recorded), erased, and read (reproduced) by an optical pickup 16. The servo circuit 17 performs the rotation control of the spindle motor 14, the focus control, the tracking control, and the feed control of the optical pickup 16.

On the front panel of the audio CD recorder 10, a record button 18, a play button 20, a stop button 22, an input selection button 24, a finalize button 2
5. Unfinalize button 27, recording preparation button 2
An operation button 9 and the like, and a display 31 for displaying operation status, time information and the like are provided. The record button 18 issues a command to start recording, the play button 20 issues a command to start playback, the stop button 22 issues a command to stop recording and playback, and a command to cancel the recording preparation state, and an input selection button 24. Issues a command to select a recording input. The finalize button 25 issues a command for processing for recording and finalizing lead-in information and lead-out information on a CD-R disc and a CD-RW disc. When the finalize button 25 is pressed during recording, finalization after the end of recording is reserved, and the finalize operation is automatically executed after the end of recording. The unfinalize button 27 issues a command for a process of erasing and unfinalizing lead-in information and lead-out information from a CD-RW disc that has been finalized.

The recording preparation button 29 issues a command to shift from the stop state to the recording preparation state. That is, when the recording preparation button 29 is pressed, it is determined whether or not the inserted disc has been finalized.
1 is displayed. ), If not finalized,
By accessing the recording end position of the recorded effective track,
Set to the recording ready state. In addition, finalized C
In the case of a D-RW disc, a state indicating that the disc is not completed (a state indicating that the disc has not been finalized or a state indicating that the disc has been unfinalized) is virtually created inside the drive, and is additionally recorded. Is permitted, the recording end position of the recorded valid track is accessed, and the recording ready state is set. The recording ready state can be released by pressing the stop button 22. By pressing the recording button 18 in the recording ready state, a new track can be overwritten following the recording end position of the recorded valid track. When the recording of the new track is completed, the lead-in area is erased (the logical erase format is recorded) if the finalizing operation has not been reserved. If the finalizing operation has been reserved, after the recording of the new track is completed, the lead-in information corresponding to the contents after the additional recording is overwritten in the lead-in area, and the lead-out area is continuously read out from the recording end position of the new track. Information is recorded and a lead-out area is formed.

The audio CD recorder 10 has a digital input terminal 30 and an analog input terminal 32 as recording input terminals, and a digital output terminal 3 as a reproduction output terminal.
4 and an analog output terminal 36. The digital audio signal input from the digital input terminal 30 at the time of recording is subjected to processing such as serial / parallel conversion and sampling rate conversion by the signal converter 38, so that the audio C
The digital signal is converted into a digital signal having a sampling rate of 44.1 kHz in synchronization with a reference clock generated inside the D recorder 10. The analog audio signal input from the analog input terminal 32 is converted by the A / D converter 40 into a digital signal having a sampling rate of 44.1 kHz synchronized with a reference clock generated inside the audio CD recorder 10. The input selector 42 selects an input specified by the input selection button 24 from the digital input and the analog input, and inputs the input to the encoder 44. The encoder 44 creates a recording signal of a predetermined CD format including the input signal in the data of the main channel. The optical pickup 16 modulates a recording laser beam with the recording signal, and records the recording signal on the optical disc 12. A read signal of the optical disk 12 output from the optical pickup 16 at the time of reproduction is decoded by a decoder 46, subjected to processing such as parallel / serial conversion by a signal converter 48, and output from a digital output terminal 34. Also, D
The signal is converted into an analog signal by the / A converter 50 and output from the analog output terminal 36.

The ROM 52 stores information (recording strategy) on the amount of adjustment of the laser beam irradiation time and the irradiation start timing according to the recording pit length and blank length at the time of recording. The RAM 54 temporarily stores input data and reproduction data during recording and reproduction, and is used for jitter absorption, interleave processing, dinterleave processing, and the like. The CPU 56 controls the entire system in the audio CD recorder 10 as a system controller.

FIGS. 3 and 4 show an algorithm of a write-once control of a CD-RW disc by the CPU 56. FIG. When the insertion of the optical disk 12 is detected (S10), the optical disk 12
Disc type from the lead-in area and PMA area of
Disk information such as TOC is acquired (S11). When the recording preparation button 29 is detected to be turned on (S12), the disc type is determined (S13). In the case of an optical disc other than the CD-RW disc, the algorithm shifts to an algorithm dedicated to the optical disc (S14), and the control is ended (S14). S15). CD
In the case of a -RW disc, it is determined whether or not the TOC is recorded in the lead-in area (that is, whether or not the disc has been finalized) (S16), and the determination result is stored and displayed on the display 31. If the TOC is not recorded, access is made to the recording end position of the recorded valid track based on the disc information, and the apparatus enters a recording preparation state (S17). If the TOC is recorded, a state indicating that the TOC is not recorded is virtually set in the drive to make it recordable (S18), and then the recording end position of the recorded valid track is accessed. Then, the recording preparation state is entered (S17). In the recording preparation state, the remaining recording time based on the disc information is displayed on the display 31. The user sees the display and determines whether to perform additional writing. Stop button 22 by the user in the recording ready state
Is detected (S19), and if the stop button 22 is detected, it is further determined in step S16 whether the TOC is recorded. (S20), TOC
When it is determined that is recorded, the virtual state indicating that the TOC is not recorded is released (S21), and the control is terminated (S22). If it is determined that the TOC has not been recorded, the control ends (S22).

When the recording button 18 is detected without releasing the recording preparation state (S23), recording of a new track is started following the recording end position of the recorded valid track (S24). In this case, the recording preparation button 2
A combination of the recording button 9 and the recording button 18 constitutes the additional writing instruction means of the present invention. If the closing of the finalize button 25 is detected during the recording, the finalizing operation after the end of the recording is reserved (S25). Stop button 22 during recording
Recording is terminated (S26), the recording is terminated (S26).
27). When the recording is completed, PMA information (track number, recording start position and recording end position of the track) regarding the new track for which the recording has been completed is recorded following the recording end position of the PMA area (S28). Further, it is determined whether or not a finalizing operation is reserved in step S25 (S29). If the finalizing operation is reserved, the finalizing operation is executed (S30). That is, the lead-in information including the information of the newly recorded track is overwritten on the lead-in area (this erases the original lead-in information), and further, the recording end portion of the newly recorded track. Then, the lead-out information is recorded. When the finalizing operation ends, the control ends (S31). If the finalizing operation has not been reserved, it is determined in step S16 whether or not it has been determined that the TOC has been recorded (S32). If it has been determined that the TOC has been recorded, the lead-in area is erased (step S32). The logical erase format is recorded) (S33), and the control ends (S31). If it is determined that the TOC has not been recorded, the control is terminated as it is (S31).

Referring to FIG. 5, a specific example of the additional recording procedure based on the algorithm shown in FIGS. 3 and 4 will be described. This is an operation example in the case where the reservation for finalization is not made during the additional recording. (I) is a disc format of a finalized CD-RW disc. Tracks 1 and 2 (song 1 and song 2) are recorded as recorded effective tracks to form a program area, and a lead-in area is formed on the inner circumference side adjacent to the program area and on the outer circumference side. A lead-out area is formed. Lead-in information such as TOC information of tracks 1 and 2 is recorded in the lead-in area. Lead-out information of a predetermined format is recorded in the lead-out area. PMA information such as track information of tracks 1 and 2 and disc identification information is recorded in the PMA area on the inner peripheral side of the lead-in area. When the recording preparation button 29 is pressed, a virtual erasure flag indicating that the lead-in area has been virtually erased is set (however, the lead-in information is still held in the memory such as the CPU 56 and the recorded valid track is recorded). The flag indicating that the lead-in information is present on the disc is set.), And a state indicating that the disc is incomplete is stored inside the CPU 56. Made virtually.

When the recording button 18 is pressed in this state, (i
As shown in i), track 3 is overwritten and added after the recording end position (recording end position of track 2) of the recorded valid track in the program area (lead-out information is deleted by overwriting). After the additional recording, PMA information (track number, recording start position and recording end position of the track) on the track 3 is recorded following the recording end position of the recorded PMA information in the PMA area. PMA
Following the recording of the information, the lead-in area is erased (the logical erase format is recorded) as shown in (iii). Also, the lead-in information in the memory such as the CPU 56 is deleted. Further, the virtual erasure flag and the flag indicating that the lead-in information is present on the disk are released. If additional recording is instructed from this state, a new track can be additionally recorded following the recording end position of the track 3. When the additional recording is completed and the finalize button 25 is pressed, the lead-in information is recorded in the lead-in area, the lead-out information is recorded immediately after the recording end position of the recorded track, and the lead-out area is formed. Complete again.

Another specific example of the additional recording procedure by the algorithm of FIGS. 3 and 4 will be described with reference to FIG. This is an operation example when a reservation for finalization is made during additional recording. (I) is a disc format of a CD-RW disc that has been finalized and is in the same state as in FIG. 5 (i). When the recording preparation button 29 is pressed, a virtual erasure flag indicating that the lead-in area has been virtually erased is set (however, the lead-in information is still held in the memory such as the CPU 56 and the recorded valid track is recorded). The flag indicating that the lead-in information is present on the disc is set.), And a state indicating that the disc is incomplete is stored inside the CPU 56. Made virtually. When the record button 18 is pressed in this state, as shown in (ii), the track 3 is overwritten after the recording end position (recording end position of the track 2) of the recorded effective track in the program area (see FIG. Lead-out information is deleted by overwriting.) During this additional recording, the finalizing button 25 is pressed to reserve the finalizing operation after the additional recording is completed. When the track 3 has been added, the recorded PMA in the PMA area
PMA related to track 3 following the information recording end position
Information (track number, recording start position and recording end position of the track) is recorded. Subsequent to the recording of the PMA information, as shown in (iii), the lead-in information corresponding to the content after the additional recording in the lead-in area is recorded over the original lead-in information. After the recording of the lead-in information, the lead-out information is recorded following the recording end position of the track 3 to form a lead-out area. Also, CPU
The lead-in information in the memory such as 56 is also updated to the new content. Further, the virtual erasure flag and the flag indicating that the lead-in information is present on the disk are released.

Embodiment 2 The present invention is applied to a system in which a host computer is combined with a CD-R / RW drive (a drive capable of recording and reproducing CD-R and CD-RW discs). An embodiment will be described. In this case, the entire system constitutes the rewritable optical disk recording device of the present invention. FIG. 7 shows the system configuration. The optical disk recording device 58 is connected to a host computer 60 such as a personal computer and a CD-ROM.
The R / RW drive 62 is configured by connecting with an interface such as SCSI or IDE. Host computer 60
Incorporates application software (writing software) for controlling the CD-R / RW drive 62. The user can record, play, stop, select an input, finalize, and unfinalize on the display of the host computer 60. To issue various commands such as recording preparation. The operation state and time information of the CD-R / RW drive 62 are displayed on the display. The music data to be added is stored in the hard disk of the host computer 60 in advance, or is input in real time using a dedicated interface card. The combination of the CPU in the host computer 60 and the CPU in the CD-R / RW drive 62 constitutes the control means of the present invention.

FIGS. 8 and 9 show the algorithm of the additional writing control of the CD-RW disc by the writing software in the system configuration of FIG. When the writing software is started, a command requesting acquisition of disk information is sent to the drive 62, and the disk information (optical disk type recorded in the lead-in area and the PMA area) of the optical disk inserted into the drive 62 is sent from the drive 62. , TOC, etc.) (S40). When the user orders recording preparation,
Upon receiving the command (S41), the disc type is determined (S42). In the case of an optical disc other than a CD-RW disc, the processing shifts to an algorithm dedicated to the optical disc (S
43), and ends the control (S44). In the case of a CD-RW disc, it is determined whether or not the TOC is recorded in the lead-in area (that is, whether or not the disc has been finalized) (S45). The result of the judgment is displayed. T
If the OC has not been recorded, it is set to a recording ready state (recordable state) (S46). If the TOC is recorded, a command for virtually setting a state indicating that the TOC is not recorded is transmitted to the drive 62 (S47), and further, a command for requesting information on the free space of the optical disk is transmitted. (S48). By comparing the capacity of the music data to be recorded stored in the hard disk or the like with the free space of the optical disk (S49), if the free space of the optical disk is insufficient, the TOC virtually set in the drive 62 is recorded. A command to release the state indicating that the state is not present is sent to the drive 62 (S50), and the control is terminated (S51). If there is enough free space on the optical disk, the recording state is set (S46).

In the recording preparatory state (S46), it is determined whether an instruction to cancel the recording preparatory state has been received from the user (S52). If the cancel instruction has been received, the TOC is recorded in step S45. Is determined (S53), and when it is determined that the TOC is recorded, a command to cancel the virtual state indicating that the TOC is not recorded is transmitted to the drive 62 (S54). The control ends (S55). If it is determined that the TOC has not been recorded, the control ends (S55).

When the user instructs recording without releasing the recording preparation state, the command is received (S56), and the drive 62 issues a command to start recording a new track following the recording end position of the recorded valid track. (S57). In this case, the function of the additional writing instruction means of the present invention is realized by a combination of the recording preparation instruction operation and the recording instruction operation by the user on the display. When the user instructs finalization during recording, the user receives the instruction and sets a reservation for the finalizing operation after the recording is completed (S58). In this case, the function of the recording completion processing reservation means of the present invention is realized by the reservation operation of the finalizing operation by the user on the display. When the user instructs stop after recording the scheduled music data,
Upon receiving the instruction, the drive 62 issues a command to instruct the end of recording and a command to instruct recording of PMA information (track number, recording start position and recording end position of the track) relating to a new track in which the recording is ended.
(S59). Further, in step S58, it is determined whether or not the finalizing operation is reserved (S58).
60) If it is reserved, a command to execute finalization is sent to the drive 62 (S61). In response to this command, the drive 62 overwrites the lead-in information including the information of the newly recorded track in the lead-in area (this erases the original lead-in information).
Further, lead-out information is recorded following the recording end of the newly recorded track. When the finalizing operation ends, the control ends (S62). If the finalizing operation has not been reserved, it is determined in step S45 whether or not it has been determined that the TOC has been recorded (S63). If it has been determined that the TOC has been recorded, the lead-in area is deleted (step S63). A command to record the logical erase format) is sent to the drive 62 (S64), and the control is terminated (S62). If it is determined that the TOC has not been recorded, the control is immediately terminated (S62).
The specific example of the additional recording procedure in FIGS. 5 and 6 also applies to the additional recording procedure by the algorithm in FIGS.

In the above embodiment, reservation for finalization is made during recording, but it is also possible to make reservation before recording. Further, in the above embodiment, the case where music is recorded has been described, but the present invention can be applied to recording of images and other various data. In the above embodiment, the case where a CD-RW disk is used as a rewritable optical disk has been described. However, the present invention is also applicable to a case where a rewritable optical disk of another system to which the present invention can be applied is used. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration of an audio CD recorder to which the present invention is applied.

FIG. 2 is a process chart showing a conventional additional recording procedure for a finalized CD-RW disc.

FIG. 3 shows a CD-ROM using the audio CD recorder shown in FIG. 1;
9 is a flowchart illustrating an algorithm of an additional recording control of the RW disk.

FIG. 4 is a flowchart showing a continuation of FIG. 3;

FIG. 5 is a process chart showing a specific example of a write-once procedure by the algorithm of FIGS. 3 to 4 or 8 to 9;

FIG. 6 is a process chart showing another specific example of the additional recording procedure according to the algorithm of FIGS. 3 to 4 or FIGS.

FIG. 7 is a block diagram showing a system configuration of a combination of a host computer and a CD-R / RW drive to which the present invention is applied.

8 is a flowchart showing an algorithm of a CD-RW disc additional recording control according to the system configuration of FIG. 7;

FIG. 9 is a flowchart showing a continuation of FIG. 8;

[Explanation of symbols]

Reference numeral 10: audio CD recorder (rewritable optical disk recording device), 12: optical disk, CD-RW disk (rewritable optical disk), 18: recording button (additional recording instruction means),
25: Finalize button (recording completion processing reservation means), 29: Recording preparation button (additional command means), 56 ...
CPU (control means), 58 ... optical disk recording device (rewritable optical disk recording device).

Claims (8)

[Claims] 1. A rewritable optical disk in which valid information is recorded in a lead-in area, a program area, and a lead-out area, respectively, and recording is completed, following a recording end position of a recorded valid track in the program area. A method for additionally writing a rewritable optical disc, which has been subjected to a recording completion process, in which a new track is overwritten and additionally written, and after the additional writing, the lead-in information in the lead-in area is erased. 2. After the new track is added and before erasing the lead-in information, the table of contents information on the new track is added to a temporary storage area of the table of contents information on the recorded valid track of the rewritable optical disk. 2. The method according to claim 1, wherein the recording is performed. 3. In a rewritable optical disk in which valid information is recorded in each of a lead-in area, a program area, and a lead-out area, and recording is completed, the rewritable optical disk is continued from a recording end position of a recorded valid track in the program area. A new track is overwritten and additionally written, and after the additional writing, new lead-in information corresponding to the content after the additional writing is overwritten in the lead-in area to erase the original lead-in information, and A write-once method for a recording-completed rewritable optical disk in which lead-out information is recorded subsequent to the recording end position to form a new lead-out area. 4. A table of contents information relating to the new track in a temporary storage area of table of contents information relating to a recorded valid track of the rewritable optical disk after the new track is additionally recorded and before overwriting of the new lead-in information. 4. The method according to claim 3, wherein the recording is performed by adding a record. 5. A write-once commanding means for instructing a write-on of a new track for a rewritable optical disc in which effective information is recorded in each of a lead-in area, a program area, and a lead-out area and recording is completed, Control means for overwriting a new track following the recording end position of the recorded valid track in the program area and additionally writing, and performing control to erase the lead-in information in the lead-in area after the additional writing. Rewritable optical disk recording device. 6. The control unit according to claim 1, further comprising: storing the new track in a temporary storage area of table-of-contents information relating to a recorded valid track of the rewritable optical disc after the additional writing of the new track and before the erasing of the lead-in information. 6. The rewritable optical disk recording apparatus according to claim 5, wherein control is performed to perform recording for adding table-of-contents information related to the rewritable optical disk. 7. A write-once command means for instructing a write-on of a new track for a rewritable optical disc in which valid information is recorded in each of a lead-in area, a program area, and a lead-out area and recording is completed, Recording completion processing reservation means for reserving recording completion processing after the track has been additionally recorded, and overwriting a new track following the recording end position of the recorded valid track in the program area in response to the additional recording instruction, and additionally recording, The original lead-in information is deleted by overwriting new lead-in information corresponding to the content after the additional recording in the lead-in area after the additional recording upon receiving the recording completion reservation before or after the additional recording, And control means for recording lead-out information subsequent to the recording end position of the additionally written track and controlling to form a new lead-out area. Rewritable optical disk recording device. 8. The temporary storage area of table of contents information relating to a recorded effective track of the rewritable optical disk after the additional writing of the new track and before overwriting of the new lead-in information. 8. The rewritable optical disk recording apparatus according to claim 7, wherein control is performed to perform recording for adding table of contents information on tracks.