JP2001351326A - Information recorder, information recording method and recording medium with information recording processing program recorded thereon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make writable the data of CD-TEXT standard into a recordable information recording medium by a TAO system. SOLUTION: The writing destination address of the read-in area of a recordable optical disk 20 and the subcode data on a writing R-W channel are received from a host computer under the control of a system controller 16. When the received subcode data reaches its prescribed quantity in a buffer RAM 11, a subcode controller 9 synthesizes the subcode data and the TOC information generated from the PMA information and starts its writing operation at the received writing destination address of the received read-in area. Then the controller 9 closes a session by writing a read-out area after the writing operation is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a CD-R / RW
An information recording apparatus such as a CD-R / RW apparatus for recording information on a recording medium such as a track-at-once method, and a CD-R
/ RW, an information recording method for recording information on a recording medium such as a CD-R / RW, and an information recording method for recording information on a recording medium, such as a CD-R / RW. Related to recording media.

[0002]

2. Description of the Related Art Information recorded on a CD is largely divided into main data and subcode data. The main data is used for recording music and computer data, and the subcode data is mainly used for recording track time information.

[0003] The subcode data is P, Q, R,
It is divided into channels indicated by S, T, U, V, and W, and each of them is a sync pattern (SYNC PATTER).
Excluding N), it is composed of 96 bits.

The P channel indicates a silent portion or a gap between tracks. Also, the Q channel is very important. In the user data area (user data area), the absolute time and relative time information of the track is mainly recorded. In the lead-in area (lead-in area), each track is recorded. TOC (Table) which is table of contents information indicating a start time
Of Content) information is recorded.

[0005] Further, in addition to the RW channel being used for CD-G applications, recently, the channel is also used for CD-TEXT. However, CD-G and CD-TEX
To achieve the coexistence of T, the CD-G is
W and CD-TEXT are separated from RW in the lead-in area.

The above-mentioned CD-G has been widely used for displaying karaoke lyrics and illustrations on a TV. However, since the storage capacity is low, the graphics are rough, and the quality is significantly lower than that of an LD or VCD. Is not used much.

In recent years, there has been a remarkable spread of MD. A feature of the MD is that it can record high-quality sound, and can also record text data such as an artist name, an album name, and a song name, so that the song name can be easily known while the song is being played. This gives great joy not only in hearing but also in sight.

However, music CDs (Audio CDs)
Has no place to put this kind of text data,
Although D is said to have better sound quality than MD,
This point was a functionally inferior part.

[0009] In addition, since arbitrary character display devices at the time when CDs began to spread were large and expensive, the value of displaying song titles was relatively low. However, with the advance of technology, the size and price of character display devices have been reduced,
Is also installed in small portable players.

Now, the merit of displaying the title of a song is sufficiently greater than the disadvantage of increasing the cost of the character display device. Under such circumstances, the tendency to insert text data into music CDs has increased and CD-TEX has recently become popular.
T.

If there is a CD and a player corresponding to the CD-TEXT, an artist name, an album name, and a song name can be displayed similarly to the MD. Of course, CD-R / RW, which is being recognized as a recording medium for personal music,
A function to write D-TEXT is required, and CD-
R / RW equipment has begun to have that function.

By the way, C in a CD-R / RW device
The disc-at-once (Disc At Once: DAO) method and the track-at-once (Track At Once: TAO) method are used for writing to the DR / RW.
System and a packet write (Packet Write) system.

The DAO method is a method of writing lead-in, track, and lead-out at a stroke, and is suitable for recording music data because a write seam does not enter between tracks.

The TAO method is a method of individually writing a plurality of tracks and lead-in / out, and is suitable for additionally writing computer data. The packet write method is a method in which tracks are divided and written, and is suitable for randomly writing computer data to a CD-RW.

That is, since music data is mainly recorded in the DAO format, writing in the CD-TEXT is also supported in the DAO format.

[0016]

However, since the current CD-R / RW device has a high writing precision, noise is hardly felt at the joint of the tracks, and TA
The O-append merit is reviewed, and many people use T
Even if recording is started in AO format,
-There was a problem that data of the TEXT standard could not be recorded.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its first object to write CD-TEXT standard data on a recordable information recording medium by TAO method.

The TAO method has the following advantages:
There is a case where all the music cannot be prepared at once due to insufficient capacity of the DD, or a case where the number of favorite songs is gradually increased and the disk is closed when the disk becomes full so that the CD player can reproduce the music. .

Therefore, a recordable information recording medium C
Since information can be written only once on a DR medium, it is not possible to correct an error in the CD-TEXT information, but the CD-RW medium is a rewritable information recording medium. Although the data can be overwritten and the subcode in the lead-in area can be physically rewritten, the recording medium must be once erased and rewritten. Was.

A second object of the present invention is to make it possible to add or modify information on a rewritable information recording medium according to the CD-TEXT standard.

[0021]

According to the present invention, there is provided an information recording apparatus for recording information on a recordable recording medium by a track-at-once method in order to achieve the first object. Receiving means for receiving the write destination address of the lead-in area of the recording medium, the subcode data of the RW channel to be written, and the RW channel subcode data received by the means has reached a predetermined amount. At this time, the TOC information generated from the PMA information and the subcode data of the RW channel are combined, writing is started from the write destination address of the lead-in area of the recording medium received by the receiving means, and the writing is completed. Writing means for writing the lead-out area of the recording medium and closing the session after the To provide for.

In an information recording method for recording information on a recordable recording medium by a track-at-once method,
A write destination address of the lead-in area of the recording medium and subcode data of the RW channel to be written are received from an externally connected host computer, and the received subcode data of the RW channel is reduced to a predetermined amount. When it reaches, the TOC information generated from the PMA information and the R
-Writing sub-code data of the W channel, starting writing from the write destination address of the received lead-in area of the recording medium, and after finishing the writing, writing the lead-out area of the recording medium and closing the session Information recording methods are also provided.

Further, when information is recorded on a recordable recording medium by the track-at-once method, an externally connected host computer writes a write destination address of a lead-in area of the recording medium and an R-W channel of the R-W channel to be written. A reception function for receiving subcode data, and when the subcode data of the RW channel received by the function reaches a predetermined amount, the TOC information generated from the PMA information is combined with the subcode data of the RW channel. A writing function for starting writing from a write destination address of a lead-in area of the recording medium received by the receiving function, writing the lead-out area of the recording medium after finishing the writing, and closing a session. Computer-readable information recording processing program Recording medium that can be taken are also provided.

Next, in order to achieve the second object of the present invention, in an information recording apparatus for recording information on a rewritable recording medium by a track-at-once method, an externally connected host computer transmits the information to the recording medium. Receiving means for receiving an overwrite destination address of the lead-in area, sub-code data of the RW channel to be written, and the recording medium when the sub-code data of the RW channel received by the means reaches a predetermined amount. T read from
OC information and the sub-code data of the RW channel are combined, and overwriting is started from the overwriting destination address of the lead-in area of the recording medium received by the receiving means,
A device provided with a writing means for ending the overwriting and closing the session is provided.

In an information recording method for recording information on a rewritable recording medium by a track-at-once method, an externally connected host computer writes an overwrite destination address of a lead-in area of the recording medium and an R-write address of the write-in area. When the subcode data of the W channel is received and the received subcode data of the RW channel reaches a predetermined amount, the TOC information read from the recording medium and the subcode data of the RW channel are combined. In addition, the present invention also provides an information recording method in which overwriting is started from the overwriting destination address of the received lead-in area of the recording medium, and the overwriting is ended to close the session.

Further, when information is recorded on a rewritable recording medium by the track-at-once method, an externally connected host computer writes an overwrite destination address of a lead-in area of the recording medium and an R-W channel of the writing RW channel. A reception function of receiving subcode data, and a function of reading T from the recording medium when the subcode data of the RW channel received by the function reaches a predetermined amount.
OC information and the subcode data of the RW channel are combined, and overwriting is started from the overwriting destination address of the lead-in area of the recording medium received by the receiving function,
There is also provided a computer-readable recording medium in which an information recording processing program for causing a computer to realize a writing function of terminating the overwriting and closing a session is recorded. Things.

[0027]

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 a CD-R / RW drive device according to an embodiment of the present invention. Arrows in the figure mainly indicate the flow of data.

The optical disk 20 is driven to rotate by the spindle motor 1. The spindle motor 1 is controlled by a motor driver 2 and a servo processing unit 3 so that the linear velocity becomes constant. The linear velocity can be changed stepwise.

The optical pickup 4 incorporates a semiconductor laser, an optical system, a focus actuator, a track actuator, a light receiving element, and a position sensor (not shown), and irradiates the optical disc 20 with a laser beam for recording and reproducing data. I do. The optical pickup 4 can be moved by a seek motor.

The focus actuator, track actuator, and seek motor correspond to the motor driver 2
Then, the servo processing unit 3 controls the laser spot of the laser beam to be located at a target location based on signals obtained from the light receiving element and the position sensor.

In this CD-R / RW drive device, in the case of reading (reproducing), the read signal obtained by the optical pickup 4 is amplified by the read amplifier 5 and binarized, and then the CD is read.
The signal is input to the decoder 6 and subjected to deinterleaving and error correction. Subsequently, the data is input to the CD-ROM decoder 7, and subjected to error correction processing to further improve the reliability of the data.

After that, the data is temporarily stored in the buffer RAM 11 by the buffer manager 10, and is sent to the host computer at once through the interface (I / F) 12 such as ATAPI or SCSI when the data is prepared as sector data.

On the other hand, in the case of writing (recording), the I / F 12
Sent from the host computer through the buffer manager 10 once buffer RA
Stored in M11.

The writing is started when a certain amount of data is stored in the buffer RAM 11. Before that, the laser spot of the laser beam must be positioned at the writing start point on the optical disk 20.

The writing start point is determined on the optical disk 20.
It is determined by a wobble signal that is previously engraved by the meandering of the upper track. The wobble signal includes ATI
It contains absolute time information called P, which can be extracted by the ATIP decoder 13. Also, AT
The synchronization signal generated by the IP decoder 13 is input to the CD encoder 14 to enable writing of data at an accurate position.

The data in the buffer RAM 11 is a CD-R
Error correction codes are added and interleaved by the OM encoder 8 and the CD encoder 14, and are recorded on the optical disk 20 via the laser driver (LD driver) 15 and the optical pickup 4.

When the optical disk 20 is inserted, the PMA information and the TOC information recorded on the optical disk 20 are read, and the buffer manager 10
The information is stored in the RMA (information) storage area 11a and the TOC (information) storage area 11b of the M11, respectively.

The subcode data sent from the host computer is also transmitted by the buffer manager 10 to the subcode (data) storage area 11c of the buffer RAM 11.
Is stored in As described above, the storage areas for the subcode-related data and the main data are prepared in the buffer RAM 11.

When the lead-in area of the optical disk 20 is written (recorded), the buffer manager 10 sends the Q subcode, which is the TOC information, from the TOC storage area 11b to the R-W subcode or the R-code of the subcode storage area 11c. -W subcode to subcode controller 9
The subcode controller 9 synthesizes subcode data including the P subcode.

Further, the system controller 16 sets C
It is realized by a microcomputer including a PU, a ROM, a RAM, and the like, controls the entire CD-R / RW drive device, and performs read and write processing according to the present invention.

That is, this CD-R / RW drive device is an information recording device for recording information on a recordable recording medium by a track-at-once method and an information recording device for recording information on a rewritable recording medium by a track-at-once method. It corresponds to a recording device.

The buffer manager 10, the buffer RAM 11, the system controller 16 and the like are used by an externally connected host computer to write the write destination address of the lead-in area of the recording medium and the R-W
Receiving means for receiving the sub-code data of the channel; and T when the sub-code data of the RW channel received by the receiving means reaches a predetermined amount.
The OC information and the subcode data of the RW channel are combined, writing is started from the write destination address of the lead-in area of the recording medium received by the receiving means, and after the writing is completed, the lead-out area of the recording medium is written. Functions as a writing means for closing the session.

Further, receiving means for receiving an overwrite destination address of the lead-in area of the recording medium from the externally connected host computer, sub-code data of the RW channel to be written, and RW received by the receiving means.
When the subcode data of the channel reaches a predetermined amount, the TOC information read from the recording medium and the subcode data of the RW channel are combined and overwritten from the overwriting destination address of the lead-in area of the recording medium received by the receiving means. And ends the overwriting and closes the session.

The buffer manager 10, the buffer RAM 11, the system controller 16 and the like are provided from an externally connected host computer to the write destination address of the lead-in area of the recording medium and the RW for writing the write-in address.
Receive the sub-code data of the channel, and
When the sub-code data of the W channel reaches a predetermined amount, the TOC information generated from the PMA information and the sub-code data of the RW channel are combined, and writing is performed from the write destination address of the lead-in area of the recording medium received. After starting the writing and finishing the writing, a process of writing the lead-out area of the recording medium and closing the session is executed.

Further, an overwrite destination address of the lead-in area of the recording medium and subcode data of the RW channel to be written are received from an externally connected host computer, and the received subcode data of the RW channel is received. Reaches a predetermined amount, the TO read from the recording medium
The C information and the subcode data of the RW channel are combined, the overwriting is started from the overwriting destination address of the lead-in area of the recording medium received, the overwriting is ended, and the session is closed.

When recording information on a recordable recording medium, such as an optical disk, by a track-at-once method, an externally connected host computer writes a write destination address of a lead-in area of the recording medium, A receiving function of receiving the sub-code data of the RW channel to be written; and, when the sub-code data of the RW channel received by the receiving function reaches a predetermined amount, the TOC information generated from the PMA information and the RW channel A write function that starts writing from the write destination address of the lead-in area of the recording medium received by the receiving function by synthesizing the subcode data, writes the lead-out area of the recording medium after finishing the writing, and closes the session A recording medium for recording an information recording processing program to be realized by a computer Thus by installing the computer, even using a normal computer, it is possible to realize the CD-R / RW drive unit similar to the features of this embodiment.

Further, when information is recorded on a recording medium such as an optical disk by a track-at-once method on a rewritable recording medium, an externally connected host computer writes an overwriting destination address of a lead-in area of the recording medium,
A receiving function of receiving the sub-code data of the RW channel to be written; and a TOC information read from the recording medium and the RW channel when the sub-code data of the RW channel received by the receiving function reaches a predetermined amount. Information recording processing program which starts overwriting from the overwriting destination address of the lead-in area of the recording medium received by the receiving function by combining the sub-code data of Is recorded and installed in a computer using the recording medium, the same function as that of the CD-R / RW drive device according to the present embodiment can be realized using a normal computer.

Next, processing in the CD-R / RW drive will be described. FIG. 2 is an explanatory diagram briefly showing a normal processing procedure between the host computer and the CD-R / RW drive device in the TAO write type session closing.

First, as a normal process, a lead-in area (lead-in area) of the optical disc 20 will be described with reference to FIG.
A procedure in a case where an arbitrary RW subcode is not written to the sub-code will be described.

In step (indicated by "S" in the figure) 1, the host computer issues a close session command (Close Session command) to the CD-R / RW drive.

In step 3, the CD-R / RW drive immediately starts writing in the lead-in area because no data transfer accompanies the close session command. In the write processing, the TOC information generated in advance from the PMA information by the system controller 16 is transmitted to the subcode controller 9 by the buffer manager 10.
To P subcode, 0
The data is combined with the RW subcode of the data to generate subcode data.

Also, at the same time, the data 0 generated by the system controller 16 as the main data of the lead-in area is
The data is sent to the ROM encoder 8 and synthesized with the subcode data. Then, the combined data is sent to the CD encoder 1
4 to be written on the optical disc 20.

After writing in the lead-in area, the CD-R / RW drive writes the lead-out area in step 4 and returns a status to the host computer. In step 2, the host computer reads the status from the CD-R / RW drive. The session close is terminated by receiving the status.

Next, a processing procedure for writing an arbitrary RW subcode in a lead-in area (lead-in area) according to the first, third, and fifth aspects of the present invention will be described with reference to FIG.

When the optical disk 20 is a CD-R or CD-RW
In the case of a disc and recording on the disc, first, in step 11, the host computer executes the CD-R /
A write command (Write command) designating the start address (write destination address) of the lead-in area of the optical disc 20 is issued to the RW drive device.

The write command is accompanied by data transfer, and the host computer sends the specified length subcode data to the CD-R / RW drive device. At that time, the required subcode is RW, but for convenience, P, Q
Also send the subcode. Also, the RW subcode is CD-R
This is RAW type data that does not need to be processed by the / RW drive device.

In step 14, the CD-R / RW drive receives the subcode data and stores it in the buffer RAM 11. The host computer continues to issue write commands for the lead-in area.
The W drive device starts writing in the lead-in area when the sub-code data becomes full in the buffer RAM 11.

In the write processing, the TOC information generated in advance from the PMA information by the system controller 16 is sent to the subcode controller 9 by the buffer manager 10 and read from the P subcode / subcode storage area 11c by the subcode controller 9. RW
The subcode is combined with the subcode to generate subcode data.

At the same time, the data 0 generated by the system controller 16 as the main data of the lead-in area is stored in the CD-ROM by the buffer manager 10.
The data is sent to the ROM encoder 8 and synthesized with the subcode data. Then, the combined data is sent to the CD encoder 1
4 to be written on the optical disc 20.

In this processing, the sync cache command (Sync Ca
Until a “che command” is issued, the sub-code data is continuously received, and the RW sub-code is sent to the sub-code controller 9 by the buffer manager 10 to continue writing in the lead-in area.

After writing in the lead-in area, step 16
Then, the CD-R / RW drive writes the lead-out area and returns the status to the host computer. In step 13, the host computer ends the session closing by receiving the status from the CD-R / RW drive.

In this way, by performing a session close on a recordable recording medium such as a CD-R / RW disc by a write command, the RW subcode can be written to the lead-in area by the TAO write method. Thus, both the merit of additional recording and the merit of CD-TEXT can be obtained.

Next, an arbitrary RW subcode is written in the lead-in area (lead-in area) by overwriting the TOC information according to the second, fourth, and sixth aspects of the present invention based on FIG. The processing procedure in such a case will be described.

The process shown in FIG. 3 is a procedure for closing a session. It is premised that lead-in has not been written and is applicable to both CD-R discs and CD-RW discs. However, the process shown in FIG. Since read-in overwrite is premised, only CD-RW discs are targeted.

In the case where the optical disk 20 is a CD-RW disk and recording on the disk, first, step 2
In step 1, the host computer writes a write command (Wr) to the CD-R / RW drive device specifying the start address (overwrite destination address) of the lead-in area of the optical disc 20.
item command).

The write command is accompanied by data transfer, and the host computer sends the specified length subcode data to the CD-R / RW drive. At that time, the required subcode is RW, but for convenience, P, Q
Also send the subcode. Also, the RW subcode is CD-R
This is RAW type data that does not need to be processed by the / RW drive device.

In step 24, the CD-R / RW drive receives the subcode data and stores it in the buffer RAM 11, and the host computer continues to issue write commands for the lead-in area.
The W drive device starts writing in the lead-in area when the sub-code data becomes full in the buffer RAM 11.

In the write processing, the TO read from the optical disk 20 by the system controller 16 in advance is used.
The C information is sent to the subcode controller 9 by the buffer manager 10,
The subcode is combined with the RW subcode read from the subcode and subcode storage area 11c to generate subcode data.

At the same time, the data 0 generated by the system controller 16 as the main data of the lead-in area is
The data is sent to the ROM encoder 8 and synthesized with the subcode data. Then, the combined data is sent to the CD encoder 1
4 and overwrites the optical disc 20 to write.

In this process, the host computer issues a sync cache command (Sync Ca
Until the (che command) is issued, the sub-code data is continuously received, and the RW sub-code is sent to the sub-code controller 9 by the buffer manager 10 to continue overwriting the lead-in area.

After writing in the lead-in area, the CD-R / R
The W drive device returns a status to the host computer, and in step 23, the host computer returns to the CD-R /
The session close is ended by receiving the status from the RW drive device.

In this manner, the RW subcode in the lead-in area of a rewritable optical disc such as a CD-RW disc can be rewritten.
Since the addition of T and the change of contents can be easily performed, usability similar to MD can be realized.

[0073]

As described above, according to the information recording apparatus of claim 1 of the present invention, the information recording method of claim 3 and the recording medium on which the information recording processing program of claim 5 is recorded, recording is possible. CD-T on TAO system
EXT standard data can be written.

According to the information recording apparatus of claim 2 of the present invention, the information recording method of claim 4 and the recording medium on which the information recording processing program of claim 6 is recorded, the rewritable information recording medium has a CD-ROM. Information can be added or modified in the TEXT standard.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a CD-R / RW drive device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram briefly showing a normal processing procedure between a host computer and a CD-R / RW drive device in a TAO write type session close.

FIG. 3 is an explanatory diagram of a processing procedure when an arbitrary RW subcode is written in a lead-in area according to the first, third, and fifth aspects of the present invention in the CD-R / RW drive device shown in FIG. It is.

FIG. 4 shows a CD-R / RW drive device shown in FIG.
FIG. 9 is an explanatory diagram of a processing procedure when writing a −W subcode.

[Description of References] 1: Spindle motor 2: Motor driver 3: Servo processing unit 4: Optical pickup 5: Read amplifier 6: CD decoder 7: CD-ROM decoder 8: CD-ROM encoder 9: Subcode controller 10: Buffer Manager 11: Buffer RAM 11a: PMA storage area 11b: TOC storage area 11c: Subcode storage area 12: Host I / F 13: ATIP decoder 14: CD encoder 15: LD driver 16: System controller

Claims (6)

[Claims] 1. An information recording apparatus for recording information on a recordable recording medium by a track-at-once method, comprising: a host computer connected externally; a write destination address of a lead-in area of the recording medium; Receiving means for receiving W-channel sub-code data; and when the RW channel sub-code data received by the means reaches a predetermined amount, TOC information generated from PMA information and the RW channel sub-code. Writing means for synthesizing data, starting writing from a write destination address of a lead-in area of the recording medium received by the receiving means, writing the lead-out area of the recording medium after finishing the writing, and closing a session An information recording device comprising: 2. An information recording apparatus for recording information on a rewritable recording medium by a track-at-once method, wherein an externally connected host computer overwrites an address of an overwrite destination of a lead-in area of the recording medium and an R-write address thereof. Receiving means for receiving the sub-code data of the W channel, and when the sub-code data of the RW channel received by the means reaches a predetermined amount, the TOC information read from the recording medium and the sub-code of the RW channel Writing means for synthesizing code data, starting overwriting from an overwriting destination address of the lead-in area of the recording medium received by the receiving means, terminating the overwriting, and closing the session is provided. Information recording device. 3. An information recording method for recording information on a recordable recording medium by a track-at-once method, comprising: a host computer connected externally; a write destination address of a lead-in area of the recording medium; When the subcode data of the W channel is received and the received subcode data of the RW channel reaches a predetermined amount, the TOC information generated from the PMA information and the R-
W-channel subcode data is combined to start writing from the received write destination address of the lead-in area of the recording medium, and after finishing the writing, write the lead-out area of the recording medium to close the session. The information recording method characterized by the above-mentioned. 4. An information recording method for recording information on a rewritable recording medium by a track-at-once method, wherein an externally connected host computer overwrites an address of an overwrite destination in a lead-in area of the recording medium and an R-write address thereof. When the sub-code data of the W channel is received and the received sub-code data of the RW channel reaches a predetermined amount, the TOC information read from the recording medium and the R
-An information recording method, comprising combining W code subcode data, starting overwriting from the received overwriting address of the lead-in area of the recording medium, ending the overwriting, and closing the session. 5. When recording information on a recordable recording medium by the track-at-once method, a host computer connected externally writes a write destination address of a lead-in area of the recording medium and an R-W channel of the write R-W channel. A receiving function of receiving subcode data, and combining the TOC information generated from PMA information and the subcode data of the RW channel when the RW channel subcode data received by the function reaches a predetermined amount. A writing function to start writing from a write destination address of a lead-in area of the recording medium received by the receiving function, and to write a lead-out area of the recording medium after finishing the writing to close a session; Computer readable information recording processing program to be realized Recording medium. 6. When information is recorded on a rewritable recording medium by a track-at-once method, an externally connected host computer writes an overwrite destination address of a lead-in area of the recording medium and an R-W channel of the R-W channel to which the information is written. A receiving function of receiving sub-code data, and when the sub-code data of the RW channel received by the function reaches a predetermined amount, the TOC information read from the recording medium and the sub-code data of the RW channel are An information recording processing program for causing a computer to implement overwriting starting from an overwriting destination address of a lead-in area of the recording medium received by the receiving function and terminating the overwriting and closing a session Computer readable recording medium.