JP2003296939A - Information recording apparatus, computer program, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent misdiscrimination of presence/absence of user data. <P>SOLUTION: The information recording apparatus for recording the user data to a plurality of kinds of optical recording media each having a recorded data discrimination area, on which data for guiding recording/non-recording of the user data are recorded, at the same location of the physical format, includes: a step S3 of deciding the presence/absence of the user data having been already recorded on an objective optical recording medium on the basis of data in the recorded data discrimination area prior to the recording of the user data; a branch YES of the step S3 of recording the user data when the absence of the user data is decided. Thus, the presence/absence of the user data can be decided at the same location on the basis of the data in the recorded data discrimination area independently of the type of recording medium and the user data are recorded only for a completely blank medium. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an information recording device, a computer program, and a storage medium.

[0002]

2. Description of the Related Art For example, DVD + R (Digital Versatile
Disc + Recordable) and DVD + RW (DVD + ReWritable)
A recordable DVD-type optical recording medium such as the above has been put to practical use. Unlike a read-only optical recording medium, a recordable optical recording medium such as DVD + R or DVD + RW allows a user to record arbitrary data. Hereinafter, data arbitrarily recorded by the user will be simply referred to as user data. The recordable optical recording medium is provided with a lead-in in which track information of user data is recorded. When recording user data, track information related to the recorded user data is read in at any time. Recorded in.
This lead-in has a different logical format, but DV
D + R and DVD + RW have exactly the same layout (physical format).

When reproducing user data recorded on such an optical recording medium, a blank check is performed before reading the user data so that the user data is recorded on the target optical recording medium. Check if there is.

Incidentally, the DVD + R and the DVD + RW have the same physical layout (physical format), but have different logical formats. Therefore, when the user data is recorded, the track information of the user data to be recorded is read in. The writing order is different. Therefore, the blank check described above is performed by determining the type of the target optical recording medium based on the difference in reflectance in a specific area for determining the type of optical recording medium included in each type of optical recording medium. It is performed at a position suitable for various optical recording media.

For example, Japanese Patent Application Laid-Open No. 2001-34945 discloses a technique in which a threshold value for judging a blank is appropriately set at the time of a blank check.

[0006]

However, as described above, in the case of optical recording media having different logical formats, the type of the target optical recording medium is discriminated, and the position suitable for various optical recording media is determined. Since a blank check must be performed for the lead-in layout (physical format), even if the same lead-in layout (physical format), at the time of blank check It is necessary to control according to. JP 2
The same applies to the technology disclosed in 001-34945.

However, as described above, when the type of the target optical recording medium is discriminated by the difference in reflectance in a specific area of the optical recording medium, deterioration due to the light source, deterioration of the optical recording medium, foreign matter, etc. The type of the optical recording medium may be erroneously determined due to the change in the reflectance from the area.

When the type of the optical recording medium is erroneously determined, a blank check is performed at an inappropriate position on the target optical recording medium. It cannot be correctly determined whether or not the data is recorded, and the determination as to whether or not the user data is recorded on the optical recording medium is erroneous. As a result, even though the optical disc has a part of user data stored therein, it may be determined that the optical disc is a complete blank because a blank check is performed at an inappropriate position. As a result, for example, the user data already recorded is overwritten with another user data, and the previously recorded user data is destroyed.

An object of the present invention is to prevent erroneous determination of the presence or absence of user data in an information recording apparatus for recording user data on a recordable optical recording medium.

An object of the present invention is, in an information recording apparatus for recording user data on a recordable optical recording medium, destruction of data recorded on the optical recording medium due to misjudgment of presence / absence of user data. It is to prevent.

An object of the present invention is, in an information recording apparatus for recording user data on a recordable optical recording medium, a situation in which, for example, deterioration of a light source, deterioration of an optical recording medium, influence of a foreign substance or the like occurs. Even under, it is to prevent erroneous determination of the presence or absence of user data.

An object of the present invention is to determine the presence / absence of user data in an information recording apparatus for recording user data on a recordable optical recording medium without depending on the presence / absence of session close.

[0013]

According to another aspect of the present invention, there is provided an information recording apparatus, which has a recorded discrimination area in which data corresponding to recording / non-recording of user data is recorded at the same position in a physical format. Recording means for recording user data on a plurality of different types of optical recording media, and based on the data in the recorded determination area of the target optical recording medium prior to recording the user data by the recording means. And a recorded-state determining unit that determines the presence or absence of user data recorded on the optical recording medium, wherein the recording unit is recorded on the target optical recording medium by the recorded-state determining unit. If it is determined that there is no user data that exists, the user data is recorded.

Here, the "data corresponding to the recording / non-recording of user data" recorded in the recorded judgment area is, for example, as described in claim 2, the user data is recorded to record the optical data. Recording media lead-in
Means data that is always recorded, and when user data is recorded on a recordable optical recording medium, it indicates that user data is recorded regardless of the size of the recorded area.

Therefore, regardless of the type of optical recording medium, the presence or absence of user data is determined at the same position based on the data in the recorded determination area.

According to a second aspect of the invention, in the information recording apparatus according to the first aspect, the recording means records user data by using DVD + RW or DVD + R as the optical recording medium.

Therefore, DVD + RW and DVD + R have the same lead-in structure (physical format). Therefore, for example, by setting the lead-in as the recorded discriminating area, either optical recording of DVD + RW or DVD + R is performed. Even when the medium is targeted, the presence or absence of user data is determined at the same position.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the information recording apparatus described above, the recorded-state determining means is
At least one of the guard zone 1, the reserved zone 1, the reserved zone 2, the reserved zone 3, the reference code zone, the buffer zone 1 and the buffer zone 2 in the lead-in of the DVD + RW and the DVD + R is the recorded discrimination area. And

Therefore, DVD + RW and DVD +
Lead-in (L
ead-in), which is an area where data corresponding to recording / non-recording of user data is recorded prior to user data, Guard Zone 1 and Reserved Zone 1
(Reserved Zone 1), Reserved Zone 2 (Reserved Zon
e 2), Reserved Zone 3 (Reserved Zone 3), Reference Code Zone (Reference Code Zone), Buffer Zone 1 (Buffer Zone 1), Buffer Zone 2 (Buffer Z)
At least one of one 2) is set as a recorded determination area, and the presence or absence of user data is determined at the same position.

The invention according to claim 4 is the invention according to claim 1 or 2.
In the information recording apparatus described above, the recorded-state determining means is
Two or more of the guard zone 1, the reserved zone 1, the reserved zone 2, the reserved zone 3, the reference code zone, the buffer zone 1, and the buffer zone 2 in the lead-in of the DVD + RW and the DVD + R are the recorded discrimination areas. And

Therefore, DVD + RW and DVD +
Lead-in (L
ead-in), which is an area where data corresponding to recording / non-recording of user data is recorded prior to user data, Guard Zone 1 and Reserved Zone 1
(Reserved Zone 1), Reserved Zone 2 (Reserved Zon
e 2), Reserved Zone 3 (Reserved Zone 3), Reference Code Zone (Reference Code Zone), Buffer Zone 1 (Buffer Zone 1), Buffer Zone 2 (Buffer Z)
Two or more of the one 2) are set as recorded determination areas, and the presence or absence of user data is determined at the same position.

According to a fifth aspect of the present invention, there is provided a computer program, comprising a plurality of types of recordable optical recording media having a recorded determination area in which data corresponding to recording / non-recording of user data is recorded at the same position in the physical format. In a computer program installed in a computer included in an information recording device for recording user data, the recorded discriminating area of the target optical recording medium prior to recording user data on the optical recording medium. In the case where there is no user data recorded on the target optical recording medium, a recorded data determination function for determining the presence or absence of user data recorded on the optical recording medium based on the data in A recording function for recording is executed by the computer.

Therefore, regardless of the type of the optical recording medium, the presence / absence of user data is judged at the same position based on the data in the recorded judgment area.

A storage medium of the invention described in claim 6 stores the computer program defined in claim 5.

Therefore, by installing (or reading) the computer program stored in this storage medium in the computer, it is possible to obtain the same operation as the computer program according to the fifth aspect.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. In this embodiment, a DVD + R (Digital Versatile Disc) is used as an information recording device.
An example of application to an optical disk device for a plurality of types of recordable optical recording media such as c + Recordable) and DVD + RW (DVD + ReWritable) will be shown.

FIG. 1 is a schematic block diagram showing the information processing apparatus of this embodiment. The information processing device 1 is, for example,
An input means 2 for inputting information such as a personal computer, which is composed of a keyboard, a mouse and the like.
And a display unit 3 configured by a CRT or LCD for displaying predetermined display data, and an optical disc device 4. The information processing device 1 includes a CPU 5 that drives and controls each unit included in the information processing device 1.
The display unit 3 and the optical disk device 4 are driven and controlled by the CPU 5.

FIG. 2 is a schematic block diagram showing the structure of the optical disk device 4. The optical disk device 4 includes a spindle motor 11 that rotates an optical disk 10 as an optical recording medium set at a recording / reproducing position. The spindle motor 11 is controlled to have a constant linear velocity (CLV) or a constant rotational speed (CAV) by a motor driver 13 and a servo means 14 which are driven and controlled by a microcomputer 12.

The microcomputer 12 is a CPU (Central Processing Uni) for controlling the drive of each part of the optical disk device 4.
t) 15, a ROM (Read Only Memory) 16 for storing fixed data such as various computer programs, and a CP
RAM17 (Random) that functions as a work area for U15
m Access Memory). The ROM 16 of the present embodiment is an EEPROM that electrically rewritably stores a computer program.
A computer program for executing a blank check process, which will be described later, is stored in this EEPROM. Therefore, in the present embodiment, the ROM
The storage medium is realized by 16 (EEPROM). The RAM 17 has a blank check process described later.
(See FIG. 4) The type setting area (not shown) in which the type of the optical disc 10 determined by the execution of FIG. 4 is set, and the irradiation position setting in which the position of the laser spot is set in the blank check process (see FIG. 4) described later is set. Areas are secured. The position where the laser spot is irradiated in the irradiation position setting area is the target optical disc 10
It is set based on the physical format of.

Although not shown and described because it is a known technique, a recordable optical disk 10 such as a DVD + R or a DVD + RW which is an object of the optical disk device 4 of the present embodiment is a substrate having pits or grooves formed therein. A dielectric layer, a recording layer, a dielectric layer, a reflective layer, an overcoat layer, an adhesive layer, a cover substrate, and a printing layer are sequentially laminated on one surface side of the device.

Although not shown in particular, on the inner peripheral side of the optical disk 10, a PCA (Power Calibration Area) and an RMA (Reco
The data area for recording user data is provided on the outer peripheral side of the PCA or RMA. Further, the optical disc 10 is secured with a lead-in, which is an area used for recording information in the data area.

Here, FIG. 3 shows DVD + R and DVD.
It is explanatory drawing which shows the layout (physical format) of the lead-in of + RW. The DVD + R and DVD + RW lead-ins have the same layout (physical format). As shown in FIG. 3, in the lead-in, the guard zone 1 (Guard Zone 1), the reserved zone 1 (Reserved Zone 1), and the reserved zone 2 (Reserved)
ed Zone 2), Reserved Zone 3 (Reserved Zone 3),
Reference Code Zone, Buffer Zone 1 and Buffer Zone 2
ffer Zone 2) is secured.

DVD + R and DVD + RW have lead-ins with the same layout (physical format),
Since the logical formats are different, the order in which the data is written is different when recording the user data described later.

When recording on DVD + RW,
Prior to recording user data, Guard Zone 1, Reserv
ed Zone 1, Reserved Zone 2, Inter Disc Identificat
ionZone, Reserved Zone 3, Reference Code Zone, Buf
Record in all of fer zone 1, control data zone and buffer zone 2.

When recording on a DVD + R, prior to recording user data, Guard Zone 1, Reserved
Zone 1, Reserved Zone 2, Reserved Zone 3, Referen
Record in ce Code Zone, Buffer Zone 1, and Buffer Zone 2.

That is, DVD + R and DVD + RW
When recording on any of the optical discs 10, the Guard Zone 1, Reserved Zone 1, Reserved Zone
2, Reserved Zone 3, Reference Code Zone, Buffer Zo
ne 1 and Buffer Zone 2 are recorded prior to recording user data. Therefore, in the present embodiment, Guard Zone 1 and Reserved Zone are recorded before user data is recorded.
1, Reserved Zone 2, Reserved Zone 3, Reference Cod
Data recorded in e Zone, Buffer Zone 1, and Buffer Zone 2 is "data according to recording / non-recording of user data"
And the “data corresponding to the recording / non-recording of user data” is recorded Guard Zone 1, Reserved Zone 1, R
eserved Zone 2, Reserved Zone 3, Reference Code Zo
Each zone of ne, Buffer Zone 1, and Buffer Zone 2 is used as the recorded discrimination area. Guard Zone 1, Reserved Zone
1, Reserved Zone 2, Reserved Zone 3, Reference Cod
When data is recorded in e Zone, Buffer Zone 1, and Buffer Zone 2, user data is recorded in at least a part of the data area of the optical disc 10.

The optical disk device 4 includes the spindle motor 1
The optical pickup 18 includes a semiconductor laser (not shown) that emits a laser beam for irradiating the optical disc 10 that is rotated by 1. Although not shown in particular, the optical pickup 18 includes a semiconductor laser, an optical system, a focusing actuator, a tracking actuator, a light receiving element, a position sensor, and the like.

The optical pickup 18 is moved in the sledge direction (disk radial direction) by a seek motor (not shown).
It is possible to move to.

The focusing actuator, the tracking actuator and the seek motor are driven and controlled by the motor driver 13 and the servo means 14. The motor driver 13 and the servo means 14 drive-control the focusing actuator, the tracking actuator, and the seek motor so as to position the laser spot at a desired position on the optical disc 10 based on the signals obtained from the light receiving element and the position sensor. .

When reproducing data in the optical disk device 4, the motor driver 13 and the servo means 14 drive and control the focusing actuator, the tracking actuator, and the seek motor to emit the laser light emitted from the semiconductor laser and guided by the optical system. The optical disk 10 is irradiated with a laser spot.

The laser light applied to the optical disk 10 is
The light is reflected by the reflection layer, guided to a predetermined optical path by the optical system, and received by the light receiving element. Optical pickup 18
Acquires the optical signal received by the light receiving element as a reproduction signal.

The reproduced signal obtained by the optical pickup 18 is amplified by the read amplifier 19 and binarized, and then D
It is input to the VD decoder 20. The binarized data input to the DVD decoder 20 is EF by the DVD decoder 20.
M (Eight to Fourteen Modulation) demodulation.

Since the data recorded on the optical disk 10 is EFM-modulated by collecting 8 bits at a time, the DVD decoder 20 converts 8 bits to 14 bits and adds 3 bits to the combined bits to make a total of 17 bits. Make it a bit. At this time, the combined bits are added such that the numbers of "1" and "0" up to that point are equal on average.
This process is called “DC component suppression (DC cut)”, and D
By suppressing (DC cutting) the C component, the slice level fluctuation of the reproduction signal is suppressed.

The demodulated data is subjected to deinterleaving and error correction processing and input to the DVD-ROM decoder 21. In the DVD-ROM decoder 21,
Error correction processing is performed to improve the reliability of data.

The data which has been subjected to the error correction processing twice as described above is temporarily stored in the buffer RAM 23 by the buffer manager 22. Buffer RAM 23
When the sector data is stored, the ATAPI / SCSI interface 24 transfers the data stored in the CPU 5 to the CPU 5 side at once. The CPU 5 causes the display unit 3 to display the transferred data on a CRT, an LCD, or the like.

In the case of music data, the data output from the DVD decoder 20 is input to the D / A converter 25 and is extracted from the D / A converter 25 as an analog audio signal.

On the other hand, when recording user data, A
C via TAPI / SCSI interface 24
User data is transferred from PU5. The user data can be transferred, for example, by operating a keyboard or a mouse in the input means. The user data transferred from the CPU 5 is stored in the buffer manager 22.
Is temporarily stored in the buffer RAM 23. Recording of user data is started when a certain amount of user data is accumulated in the buffer RAM 23. Buffer RA
The data of M23 is the DVD-ROM encoder 26 or D.
An error correction code is added and interleaved by the VD encoder 27 and recorded on the optical disc 10 via the laser controller 28 and the optical pickup 18.

Prior to recording user data, the optical disk device 4 positions the laser spot at the writing start point and obtains the writing start point based on the wobble signal previously engraved on the optical disk 10 due to the meandering of the track. Generally, ADIP (Add
resip in pre-groove) is included and is extracted from the wobble signal by the ADIP decoder 29.
The writing start point is obtained based on the information of.

When recording user data, A
CP via TAPI / SCSI interface 24
The data sent from U5 is once buffer RAM23
The recording is started after being stored in, but prior to this recording,
OPC is performed on the PCA of the optical disk 10 to obtain the optimum recording power of the semiconductor laser. Description is omitted because it is a known technique, but when executing OPC,
For example, in the PCA of the optical disc 10, while increasing the recording power of the semiconductor laser for each block (for each step), test recording for a predetermined block (for example, 15 blocks) corresponding to a predetermined number of times is performed. Then, the test recorded area is reproduced, and the data signal corresponding to the reflected light from the optical pickup 18 is amplified by the read amplifier 19 to detect the peak level and the bottom level. The detected level signal is A / D converted, and the β value representing the RF signal symmetry is measured based on the A / D conversion, and the recording power used in the block whose β value is the closest to the target value is the optimum recording power. To decide.

During execution of this OPC, the optical disk 10 is rotationally driven by the CLV method in which the linear velocity is constant. The optimum recording power is calculated by such a method, and the recording power command is issued to the laser controller.

In addition, in the present embodiment, the blank check process described below is performed prior to the recording of the user data described above (see FIG. 4). The blank check process may be performed before the above-mentioned OPC is executed, or
It may be performed after the PC is executed, but is executed, for example, when a user data recording command or the like transmitted from the CPU 5 is received, provided that the optical disc 10 is set at a recording / reproducing position (not shown). .

Next, the blank check process will be described with reference to FIG.
Will be described with reference to. FIG. 4 is a flowchart schematically showing the blank check process executed by the CPU 15 based on the computer program stored in the ROM 16. First, it waits until it is determined that the execution of the blank check process is declared (N in S1), and when it is determined that the execution of the blank check process is declared (Y in S1), the seek motor, the tracking coil, and the focusing coil are determined. Drive the laser spot emitted from the optical pickup 18 to Guard Zone 1, Re
served Zone 1, Reserved Zone 2, Reserved Zone 3, R
The position of the laser spot is aligned with reference to the irradiation position setting area so that it is irradiated to any one of the eference code zone, buffer zone 1 and buffer zone 2 (S2).

Since the position where the laser spot is irradiated in the irradiation position setting area is set based on the physical format of the target optical disc 10, in step S2, the optical disc 10 set at the recording / reproducing position is set. Regardless of the type, the position of the laser spot is adjusted to the physically same position.

Laser spot is Guard Zone 1, Reserved
Zone 1, Reserved Zone 2, Reserved Zone 3, Referen
Based on the amount of reflected light reflected from the optical disc 10, the target optical disc 10 is aligned with the position of the laser spot so as to irradiate any of the ce code zone, buffer zone 1 and buffer zone 2. It is determined whether or not is blank (S3). Here, the function as the recorded determination means (recorded determination function) is executed.

As mentioned above, Guard Zone 1, Reserved
Zone 1, Reserved Zone 2, InterDisc Identification
Zone, Reserved Zone 3, Reference Code Zone, Buffe
r Zone 1, Control Data Zone, and Buffer Zone 2 are the optical disc 1 targeted by the optical disc device 4 of the present embodiment.
Both optical disks 10 of DVD + R and DVD + RW, which are 0, are provided, and when recording user data, prior to recording of user data, the optical disk 10 of either DVD + R or DVD + RW is Gu
ard Zone 1, Reserved Zone 1, Reserved Zone 2, Rese
rved Zone 3, Reference Code Zone, Buffer Zone 1, B
Data is recorded for uffer Zone 2. That is, Guard Zone 1, Reserved Zone 1, Res of the optical disc 10 in which user data is recorded even in a part of the data area.
erved Zone 2, Reserved Zone 3, Reference Code Zon
Data is already recorded in e, Buffer Zone 1, and Buffer Zone 2 before this recording.

Therefore, Guard Zone 1, Reserved Zone
1, Reserved Zone 2, Reserved Zone 3, Reference Cod
By determining whether or not the target optical disk 10 is blank based on the reflected light from the e Zone, Buffer Zone 1, and Buffer Zone 2, in step S3, the DVD
Regardless of the type of the optical disc 10, regardless of the type of the optical disc 10 that is + R or DVD + RW,
Since it is possible to determine whether or not the target optical disc 10 is a complete blank at the same position, it is not necessary to change the position where the blank check is performed according to the type of the optical disc 10.

Data is recorded prior to recording user data, Guard Zone 1, Reserved Zone 1, Reser
ved Zone 2, Reserved Zone 3, Reference Code Zone,
By performing a blank check based on the data in Buffer Zone 1 and Buffer Zone 2, without depending on whether the session is closed or the disc is closed,
Blank check can be performed.

In this embodiment, Guard Zone 1, Reservo
ed Zone 1, Reserved Zone 2, Reserved Zone 3, Refer
It is determined whether or not the target optical disc 10 is blank by using two or more of the ence code zone, the buffer zone 1 and the buffer zone 2 as recorded discriminating areas.

Laser spot is Guard Zone 1, Reserved
Zone 1, Reserved Zone 2, Reserved Zone 3, Referen
Based on the amount of reflected light reflected from the optical disc 10, the optical disc 10 to be targeted is positioned in any one of the ce code zone, buffer zone 1 and buffer zone 2.
When it is determined that is blank (Y in S3), RA
In the type setting area of M17, it is set that the optical disk 10 is a complete blank (unrecorded) with no user data recorded (S4).

On the other hand, the laser spot is set to Guard Zone 1, Re
served Zone 1, Reserved Zone 2, Reserved Zone 3, R
When it is determined that the target optical disc 10 is not blank based on the amount of reflected light reflected from the optical disc 10 in a state where the optical disc 10 is positioned in one of the eference Code Zone, Buffer Zone 1 and Buffer Zone 2 ( (N of S3), in the type setting area of the RAM 17, the optical disk 1
User data is recorded in at least part of 0
(Recorded) is set (S5).

Incidentally, when recording the user data, it is conceivable that a writing failure occurs, for example, the laser power is insufficient, or a writing error occurs in part. When a blank check is performed on the optical disc 10 in which such a writing failure occurs,
It is feared that a good reflectance cannot be obtained and the blank check is erroneously determined.

On the other hand, in the present embodiment, Guard Zo
ne 1, Reserved Zone 1, Reserved Zone 2, Reserved Zo
ne 3, Reference Code Zone, Buffer Zone 1, Buffer Z
Since two or more of one2 are recorded discriminating areas and whether or not the target optical disc 10 is a complete blank is discriminated based on the amount of reflected light reflected from the optical disc 10. The reliability can be improved and an error in blank determination can be prevented.

The above-described recording of user data is executed only when the target optical disc 10 is set to be completely blank by referring to the type setting area. Here, the function (recording function) as a recording unit is executed.

As a result, it is possible to prevent the user data from being recorded / unrecorded from being mistaken due to the wrong determination of the type of the optical disc 10, and to prevent another user data from being overwritten on the already recorded user data. It is possible to prevent the destruction of the user data due to the recording of.

In addition, conventionally, it has been necessary to determine the type of the target optical disk and perform a blank check at a position suitable for each optical disk. For this reason,
For example, in a situation where the light source is deteriorated, the optical disc 10 is deteriorated, and the amount of light is changed due to the influence of foreign matter, the type of the optical disc 10 may be erroneously discriminated. May be erroneously determined.

On the other hand, according to the present embodiment, Guar
d Zone 1, Reserved Zone 1, Reserved Zone 2, Reserv
ed Zone 3, Reference Code Zone, Buffer Zone 1, Buf
Since it is possible to determine whether the target optical disk 10 is blank based on the reflected light from ferZone 2, for example, deterioration of the light source, deterioration of the optical disk 10, fluctuation of the light quantity due to the influence of foreign matter, etc. occur. Even under such a situation, it is possible to prevent the blank check from being erroneously determined due to the erroneous determination of the type of the optical disk 10.

In this embodiment, Guard Zone 1,
Reserved Zone 1, Reserved Zone 2, Reserved Zone
3, Reference Code Zone, Buffer Zone 1, Buffer Zone
Two or more of 2 are recorded discriminating areas, but not limited to this, Guard Zone 1, Reserved Zone 1, Res
erved Zone 2, Reserved Zone 3, Reference Code Zon
At least one of e, Buffer Zone 1, and Buffer Zone 2 may be used as the recorded determination area to align the laser spots.

In this embodiment, the ROM 16 (E
ROM16 (EEPRO) as a storage medium
Although the blank check process is executed based on the computer program stored in M), the present invention is not limited to this, and the blank check process is executed based on the computer program stored in another storage medium. May be.

Further, in the present embodiment, the optical disk 10 such as DVD + R and DVD + RW is described as an optical recording medium, but the optical recording medium is not limited to this.
For example, CD-R, CD-RW, DVD-RAM, DV
It can also be applied to D-RW, DVD-R and the like.

[0070]

According to the information recording apparatus of the first aspect of the present invention, a plurality of recordable discs having the recorded discrimination area in which the data corresponding to the recording / non-recording of the user data is recorded at the same position in the physical format. Recording means for recording user data on a type of optical recording medium, and prior to recording user data by the recording means, based on data in the recorded determination area of the optical recording medium of interest. A recorded data judging means for judging the presence or absence of user data recorded on the optical recording medium, wherein the recording means is a user recorded on the optical recording medium targeted by the recorded data judging means. By recording the user data when it is determined that there is no data, regardless of the type of the optical recording medium, based on the data in the recorded determination area, Since it is possible to determine at the same position whether or not the target optical recording medium is a complete blank, change the position for determining the presence or absence of user data (performing a blank check) according to the type of optical recording medium. No need. This prevents misjudgment of presence / absence of user data due to misjudgment of the type of the optical recording medium, even under conditions such as deterioration of the light source, deterioration of the optical recording medium, and influence of foreign matter. Therefore, it is possible to prevent the destruction of the user data due to the erroneous determination of the presence or absence of the user data.

According to the invention of claim 2, in the information recording apparatus of claim 1, DVD + RW, DVD + R
Have the same lead-in structure (physical format), so that, for example, by setting the lead-in as a recorded determination area, any optical recording medium of DVD + RW or DVD + R is targeted. The presence or absence of user data can be determined at the same position. With this, in practice, when the target of either of two types of optical recording media having the same physical format but different logical formats is to be changed, the position for judging the presence or absence of user data (performing a blank check) is changed. Instead, it can be determined whether or not the target optical recording medium is a complete blank.

According to the invention of claim 3, in the information recording apparatus of claim 1 or 2, the user data in the lead-in of the same structure (physical format) provided in the DVD + RW and the DVD + R is included. Prior to
Guard zone 1 (guard zone 1), reserved zone 1 (reserved zone 1), reserved zone 2 (reserved zone 2)
served Zone 2), Reserved Zone 3 (Reserved Zone)
3), Reference Code Zone (Reference Code Zone),
Buffer Zone 1 and Buffer Zone 2
By determining the presence or absence of user data by using at least one of (Buffer Zone 2) as a recorded determination area,
It is possible to determine whether or not the target optical recording medium is a complete blank, based on the data in the recorded determination area, without depending on the presence or absence of session close.

According to the invention of claim 4, in the information recording apparatus of claim 1 or 2, the user data in the lead-in of the same structure (physical format) provided in the DVD + RW and the DVD + R. Prior to
Guard zone 1 (guard zone 1), reserved zone 1 (reserved zone 1), reserved zone 2 (reserved zone 2)
served Zone 2), Reserved Zone 3 (Reserved Zone)
3), Reference Code Zone (Reference Code Zone),
Buffer Zone 1 and Buffer Zone 2
Whether two or more of (Buffer Zone 2) are recorded as the recorded discriminating area to judge the presence / absence of user data makes it possible to determine whether or not the target optical recording medium is completely blank regardless of the presence / absence of session close. Whether or not the user data is present can be determined at the same position, and the presence or absence of the user data can be determined at a plurality of places to prevent erroneous determination of the presence or absence of user data.

According to the computer program of the fifth aspect of the present invention, a plurality of types of recordable light having a recorded determination area in which the data corresponding to recording / non-recording of user data is recorded at the same position in the physical format. In a computer program installed in a computer included in an information recording device for recording user data on a recording medium, the recorded data of the target optical recording medium is recorded prior to recording the user data on the optical recording medium. If there is no user data recorded in the target optical recording medium and a recorded determination function that determines the presence or absence of user data recorded in the optical recording medium based on the data in the determination area, the user By causing the computer to perform a recording function for recording data, Regardless of the type of recording medium, it is possible to determine at the same position whether or not the target optical recording medium is a complete blank based on the data in the recorded determination area. Accordingly, there is no need to change the position for determining the presence or absence of user data (performing a blank check). This prevents misjudgment of presence / absence of user data due to misjudgment of the type of the optical recording medium, even under conditions such as deterioration of the light source, deterioration of the optical recording medium, and influence of foreign matter. Therefore, it is possible to prevent the destruction of the user data due to the erroneous determination of the presence or absence of the user data.

According to the storage medium of the invention described in claim 6,
By installing (or reading) the computer program according to claim 5 stored in this storage medium in a computer, the same effect as that obtained by executing the computer program according to claim 5 can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing an information processing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic block diagram showing a configuration of an optical disc device.

FIG. 3 is an explanatory diagram showing a lead-in layout of a DVD + R and a DVD + RW.

FIG. 4 is a flowchart schematically showing a blank check process executed by a CPU based on a control program stored in a ROM.

[Explanation of symbols]

1 Information recording device 10 Optical recording medium 16 storage media

Claims (6)

[Claims] 1. User data recording is performed on a plurality of recordable optical recording media having a recorded determination area in which data corresponding to recording / non-recording of user data is recorded at the same position in a physical format. Before and after recording the user data by the recording unit, the presence or absence of user data recorded in the optical recording medium based on the data in the recorded determination area of the target optical recording medium is determined. Recorded determination means for making a determination, wherein the recording means records user data when it is determined by the recorded determination means that there is no user data recorded on the target optical recording medium. Information recording device to perform. 2. The recording means is a DVD + RW or D
The information recording apparatus according to claim 1, wherein user data is recorded using VD + R as the optical recording medium. 3. The recorded-state determining means is a guard zone 1, a reserved zone 1, a reserved zone 2, a reserved zone 3, a reference code zone, a buffer zone 1, a buffer zone 2 in a lead-in included in a DVD + RW and a DVD + R. 3. The information recording apparatus according to claim 1, wherein at least one of the two is used as the recorded area. 4. The recorded-state determining means is a guard zone 1, a reserved zone 1, a reserved zone 2, a reserved zone 3, a reference code zone, a buffer zone 1, a buffer zone 2 in a lead-in included in a DVD + RW and a DVD + R. 3. The information recording apparatus according to claim 1, wherein two or more of them are used as the recorded-discrimination area. 5. User data is recorded on a plurality of types of recordable optical recording media having a recorded determination area in which data corresponding to recording / non-recording of user data is recorded at the same position in the physical format. In a computer program installed in a computer included in an information recording apparatus, prior to recording user data on the optical recording medium, the optical recording is performed based on data in the recorded determination area of the target optical recording medium. A recorded function for judging the presence or absence of user data recorded on the medium, and a recording function for recording user data when there is no user data recorded on the target optical recording medium. A computer program executed by the computer. 6. A computer-readable storage medium that stores the computer program according to claim 5.