JP2003323767A - Method, device, and system for recording information, computer program and storage medium to store computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To normally reproduce information even by an information reproducing apparatus which cannot perform normal read operation when data is not recorded in a range to reach a normal area beyond a predefined range from a center of an information recording medium such as a DVD-ROM drive, even from the information recording medium having a small record data size recorded at a first record segment. <P>SOLUTION: Whether or not terminal information 231 recorded in a first record segment 201 of a information recording medium reaches to the normal area beyond a predefined range from the center of the information recording medium is determined. When the terminal information 231 is determined not to reach the normal area, the terminal information 231 is extended to reach the normal area and then it is recorded. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording device for recording on a recordable information recording medium such as a DVD + R.

[0002]

2. Description of the Related Art In recent years, personal computers (PCs)
A, such as music and video, as the function improves
It is becoming possible to handle V (Audio-Visual) information. Since such AV information has a very large amount of information, it is used as a DVD (Digital Versat
An ile disc) type optical disc has come to the forefront, and as the price of the optical disc has decreased, an optical disc device as an information recording / reproducing device has become popular as one of the peripheral devices of a PC.

As a DVD-type recordable disc, a DVD
There are discs such as + R (Recordable) and DVD + RW (Rewritable). The physical characteristics of these discs are DV
It is a disc close to a D-ROM disc and excellent in compatibility with a DVD-ROM drive.

Here, in the DVD + R, it is possible to adopt a multi-session recording method in which information is divided into a plurality of recording sections (sessions) to record information. In DVD + R, such a multi-session recording method (Multi-Session Layo
ut), the first session (Session)
Is the TOC (Table of Contents) Zone
Inner drive area with
a) followed by multiple sessions (Sessi
on), and an outer drive area will be created after the last session. Each session (Intro) (Lead-in in the case of the first session (Session)), Data, and Closure (Closu)
re) (Lead-Out in the case of the last session (Session)).

[0005]

In a DVD-ROM disc, information is supposed to be recorded up to a radial position of 35 mm on the disc. Therefore, unless data is recorded in the area of the disk up to the radial position of about 30 mm, the DVD-ROM drive cannot perform a normal reading operation.

On the other hand, a DVD + R disc has address information called ADIP (Address In Pre-groove) recorded in its groove, and since a DVD + R drive can read such ADIP, data is recorded. The address information can be obtained from the ADIP even if the area that has not been accessed is accessed.

A problem caused by such a difference between the DVD + R and the DVD-ROM is a compatibility problem when only a small amount of data is recorded by the DVD + R drive and the first session is closed. That is, DV
When only a small amount of data is recorded by the D + R drive and the first session is closed, no information is recorded on the disc within the radial position of 30 mm.
+ R discs may be generated. D like this
For VD + R discs, if DVD + R drives, address information can be obtained from ADIP, so access is possible without any problems, but DVD-RO
In the case of the M drive, there is a problem that the reading operation cannot be performed.

An object of the present invention is to provide an information recording medium having a small recording data size recorded in the first recording section (Session), from the center of the information recording medium such as a DVD-ROM drive in advance. This is to enable information to be reproduced normally even by an information reproducing apparatus that cannot perform a normal reading operation unless data is recorded in a range up to a specified area exceeding the determined range.

[0009]

The invention according to claim 1 is
In an information recording method in which a disc-shaped information recording medium is divided into a plurality of recording sections and data is optically recorded from the inner diameter side to the outer diameter side of the information recording medium, data is recorded in the first recording section. The step of recording the data, the step of recording the end information indicating the end of the first recording section after the step of recording the data, and the end information recorded on the information recording medium from the center of the information recording medium in advance. A step of determining whether to reach a specified area exceeding a determined range; and, if it is determined that the terminal information does not reach the specified area, the terminal information is specified in the step of recording the terminal information. The recording is extended to reach the area.

Therefore, data is recorded from the center of the information recording medium to a specified area exceeding a predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

According to a second aspect of the present invention, in the information recording method according to the first aspect, information recording conforming to the DVD + R standard is executed on the information recording medium conforming to the DVD + R standard.

Therefore, the first session (Sessio
Even if the data recorded in n) is extremely short,
For example, a DVD + R recorded with such data may be DV.
The information reproducing device for the D-ROM can be normally read.

Here, the inventions according to claims 3 to 5 are:
A specific method for extending the termination information is specified.

That is, the invention according to claim 3 is the same as claim 2
In the information recording method described above, in the step of extending and recording the end information until reaching the specified area, the buffer zone of the closure serving as the end information is extended and recorded.

The invention according to claim 4 is the information recording method according to claim 2, wherein in the step of recording the end information by extending it until it reaches the specified area, a closure that becomes the end information. Outer Session Identification Zone (Outer Sessio
n Identification Zone) is extended and recorded.

Further, the invention according to claim 5 is the same as claim 2.
In the information recording method described above, in the step of recording the end information by extending it until it reaches the specified area, the outer session identification zone (Outer Sess) of the closure (Closure) that becomes the end information is recorded.
Ion Identification Zone) followed by the buffer zone (Buf
fer zone) is additionally recorded to extend and record the end information.

Next, the invention according to claims 6 to 7 is
It defines a method that can easily teach the head position of the next recording section even when the length of the end information changes.

That is, the invention of claim 6 is the same as claim 1.
The described information recording method further includes a step of recording the position information of the end information in an unused area of the information recording medium.

The invention according to claim 7 is the information recording method according to claim 2, further comprising a step of recording the position information of the end information in an unused area of the information recording medium.

Here, the invention according to claims 8 to 11 more specifically embodies the unused area.

That is, the invention according to claim 8 is the same as claim 7
In the described information recording method, the position information of the termination information is recorded in an unused area in the lead-in.

Further, in a ninth aspect of the invention, in the information recording method according to the seventh aspect, the position information of the termination information is recorded in an unused area in the closure that becomes the termination information.

The invention according to claim 10 is the invention according to claim 7.
In the described information recording method, the position information of the termination information is recorded in an unused area in the intro.

Further, in the invention described in claim 11, in the information recording method according to claim 7, the position information of the termination information is a TOC zone (TOC (Table of Contents) Zon.
It is recorded in the unused area in e).

According to a twelfth aspect of the present invention, an information recording apparatus for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. In the first recording section, means for recording data in the first recording section, means for recording end information indicating the end of the first recording section following recording of the data, and the end information recorded in the information recording medium. Means for deciding whether to reach a specified area exceeding a predetermined range from the center of the information recording medium, and when it is determined that the termination information does not reach the specified area, the termination information is recorded. In this case, the end information is extended and recorded until it reaches the specified area.

Therefore, data is recorded from the center of the information recording medium to a specified area exceeding a predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

According to a thirteenth aspect of the present invention, in the information recording apparatus according to the twelfth aspect, information recording conforming to the DVD + R standard is executed on the information recording medium conforming to the DVD + R standard.

Therefore, the first session (Sessio
Even if the data recorded in n) is extremely short,
For example, a DVD + R recorded with such data may be DV.
The information reproducing device for the D-ROM can be normally read.

Here, the invention described in claims 14 to 16 defines a specific method for extending the termination information.

That is, according to the invention of claim 14, in the information recording apparatus according to claim 13, when the end information is extended and recorded until it reaches the specified area, a closure that becomes the end information is provided. Buffer zone (Buf
fer zone) and record it.

The invention according to claim 15 is the same as claim 1
3. In the information recording apparatus according to 3, when the end information is extended and recorded until it reaches the specified area, the outer session identification zone (Outer Session Iden) of the closure that becomes the end information is recorded.
tification zone) and record it.

Further, in the invention according to claim 16, in the information recording apparatus according to claim 13, when the end information is extended and recorded until it reaches the specified area, a closure that becomes the end information is provided. Outer Session Identification
entification Zone) followed by the buffer zone (BufferZon
The end information is extended and recorded by additionally recording e).

Next, the invention according to claims 17 to 18 defines a method capable of easily teaching the head position of the next recording section even when the length of the end information is changed.

That is, the invention according to claim 17 is the information recording apparatus according to claim 12, further comprising means for recording the position information of the termination information in an unused area of the information recording medium.

The invention according to claim 18 is the same as claim 1.
The information recording apparatus according to 3, further comprises means for recording the position information of the termination information in an unused area of the information recording medium.

Here, the invention according to claims 19 to 22 makes the unused area more concrete.

That is, according to the nineteenth aspect of the present invention, in the information recording apparatus according to the eighteenth aspect, the position information of the end information is recorded in an unused area in the lead-in.

The invention according to claim 20 is the same as claim 1
8. In the information recording apparatus described in 8, the position information of the termination information is recorded in an unused area in a closure that serves as the termination information.

The invention according to claim 21 is the same as claim 1.
In the information recording apparatus described in 8, the position information of the end information is recorded in an unused area in the intro.

Further, in the invention described in claim 22, in the information recording apparatus according to claim 18, the position information of the termination information is a TOC zone (TOC (Table of Contents) Z).
It is recorded in the unused area in one).

According to a twenty-third aspect of the present invention, an information recording apparatus for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. In the information processing apparatus for controlling, the means for causing the information recording apparatus to record data in the first recording section, and the information recording apparatus having a terminal end indicating the end of the first recording section following the recording of the data. Means for recording information, and means for determining whether or not the terminal information recorded on the information recording medium reaches a prescribed area exceeding a predetermined range from the center of the information recording medium,
When it is determined that the termination information does not reach the specified area, the information recording device that records the termination information,
Means for extending and recording the termination information until the termination information is reached.

Therefore, data is recorded from the center of the information recording medium to a specified area exceeding a predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

According to a twenty-fourth aspect of the present invention, an information recording apparatus for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. In the information processing apparatus for controlling, the means for causing the information recording apparatus to record data in the first recording section, and the information recording apparatus having a terminal end indicating the end of the first recording section following the recording of the data. Means for recording information, and means for causing the information recording device to determine whether or not the terminal information recorded on the information recording medium reaches a prescribed area exceeding a predetermined range from the center of the information recording medium. When it is determined that the end information does not reach the specified area, the end information is extended to the information recording device that records the end information until the end information reaches the specified area. Comprising a means for recording, a.

Therefore, data is recorded from the center of the information recording medium to a specified area exceeding a predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

In the invention of the information recording system according to claim 25, a disc-shaped information recording medium is divided into a plurality of recording sections, and data is optically recorded from the inner diameter side to the outer diameter side of the information recording medium. And an information processing device for issuing an information recording command to the information recording device,
In the information recording device, the information is recorded in either the information recording device or the information processing device, or dispersed in both the information recording device and the information processing device. The function of recording data, the function of recording end information indicating the end of the first recording section following the recording of the data in the information recording device, and the end information recorded on the information recording medium are A function of determining whether to reach a specified area exceeding a predetermined range from the center of the information recording medium, and when it is determined that the termination information does not reach the specified area, in the information recording device, When recording the termination information,
A means for exerting the function of extending and recording the terminal information until reaching the specified area is provided.

Therefore, data is recorded from the center of the information recording medium to a specified area exceeding a predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

According to a twenty-sixth aspect of the present invention, an information recording apparatus for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. Installed in a computer provided with, in this computer, means for recording data in the first recording section, means for recording end data indicating the end of the first recording section following the recording of the data, and the information. A means for determining whether or not the terminal information recorded on the recording medium reaches a specified area exceeding a predetermined range from the center of the information recording medium; and it is determined that the terminal information does not reach the specified area. In this case, when recording the end information, a means for extending and recording the end information until it reaches the specified area, and a machine-readable computer for executing the means. Is a program.

Therefore, the data is recorded from the center of the information recording medium to the specified area exceeding the predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

The twenty-seventh aspect of the present invention is a storage medium storing the computer program according to the twenty-sixth aspect.

Therefore, the computer program according to the twenty-sixth aspect can be distributed while being stored in the information recording medium.

According to a twenty-eighth aspect of the present invention, an information recording device for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. Installed in a computer included in an information processing apparatus that controls the information recording apparatus, means for causing the information recording apparatus to record data in the first recording section, and the information recording apparatus after recording the data. A means for recording termination information indicating the end of the first recording section, and determining whether the termination information recorded on the information recording medium reaches a prescribed area beyond a predetermined range from the center of the information recording medium. Means to do
When it is determined that the termination information does not reach the specified area, the information recording device that records the termination information,
A machine readable computer program for executing the means for extending and recording the terminal information until the terminal information reaches the specified area.

Therefore, the data is recorded from the center of the information recording medium to the specified area exceeding the predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

The invention described in Item 29 is a storage medium for storing the computer program according to Item 28.

Therefore, the computer program according to the twenty-eighth aspect can be distributed in a state of being stored in the information recording medium.

According to a thirtieth aspect of the present invention, an information recording apparatus for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. Installed in a computer included in an information processing apparatus that controls the information recording apparatus, means for causing the information recording apparatus to record data in the first recording section, and the information recording apparatus after recording the data. A means for recording termination information indicating the end of the first recording section, and a prescribed area in which the termination information recorded on the information recording medium exceeds a predetermined range from the center of the information recording medium in the information recording device. And the information recording device for recording the termination information when it is determined that the termination information does not reach the specified area. In a machine-readable computer program for executing, and means for recording by extending the termination information to reach the defined area.

Therefore, data is recorded from the center of the information recording medium to a specified area exceeding a predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

The invention described in Item 31 is a storage medium for storing the computer program according to Item 30.

Therefore, the computer program according to the thirtieth aspect can be circulated while being stored in the information recording medium.

According to a thirty-second aspect of the present invention, an information recording apparatus for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. Installed in either one of the computer included in the computer and the computer included in the information processing device that issues an information recording command to the information recording device, or concentrated in both, or the information recording device installed in both. A function of recording data in the first recording section in the information recording apparatus, distributed to both the information processing apparatus, and a function of recording the data in the first recording section in the information recording apparatus. The function of recording the termination information indicating the end and the termination information recorded on the information recording medium are predetermined from the center of the information recording medium. A function of determining whether to reach a specified area exceeding the range, and when it is determined that the end information does not reach the specified area, the end information is recorded when the end information is recorded in the information recording device. Is a machine-readable computer program for executing the means for exerting the function of extending and recording until reaching the specified area.

Therefore, data is recorded from the center of the information recording medium to a specified area exceeding a predetermined range. As a result, normal reproduction of data is possible even with a reproducing device that cannot perform a normal reading operation unless data is recorded within a prescribed area that exceeds a predetermined range from the center of the information recording medium. Becomes

A thirty-third aspect of the present invention is a storage medium for storing the computer program according to the thirty-second aspect.

Therefore, it becomes possible to distribute the computer program according to the thirty-second aspect of the invention while being stored in the information recording medium.

[0063]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a schematic structure of an optical disk device 1 as an information recording device.

The optical disc device 1 includes a spindle motor 3 for rotating an optical disc 2 as an information recording medium, an optical pickup device 4, a laser control circuit 5, a motor driver 6, a reproduction signal processing circuit 7, a servo controller 8, Buffer RAM 9, buffer manager 10, interface 11, ROM 12, CPU 1
3 and RAM 14 and the like. In addition,
The arrows shown in FIG. 1 show typical signal and information flows, and do not show all the connection relations of each block.

More specifically, first, as the optical disk 2, an information recording medium (hereinafter, referred to as a DVD + R standard compliant recording medium)
This is simply referred to as DVD + R).

The optical pickup device 4 guides the semiconductor laser as a light source and the laser light emitted from the semiconductor laser to the recording surface of the optical disc 2 and the return light reflected by the recording surface to a predetermined light receiving position. And the like, an optical system arranged at a light receiving position for receiving return light, and a drive system (focusing actuator, tracking actuator, seek motor, etc.) (all not shown), etc. . From the light receiver, a current (current signal) corresponding to the amount of light received is output to the reproduction signal processing circuit 7.

The servo controller 8 generates a control signal for controlling the focusing actuator of the optical pickup device 4 based on the focus error signal, and a control signal for controlling the tracking actuator of the optical pickup device 4 based on the track error signal. To generate. These control signals are sent to the servo controller 8
Output to the motor driver 6.

The motor driver 6 drives the focusing actuator and the tracking actuator of the optical pickup device 4 based on the control signal from the servo controller 8. In the motor driver 6, C
Based on an instruction from the PU 13, the spindle motor 3 is controlled so that the linear velocity of the optical disc 2 becomes constant. Further, the motor driver 6 drives the seek motor for the optical pickup device 4 based on an instruction from the CPU 13,
The optical pickup device 4 is moved in the radial direction toward the target track of the optical disc 2.

The interface 11 is a host as an external device (for example, a PC as an information processing device shown in FIG. 2).
101) and a two-way communication interface
It conforms to standard interfaces such as API and SCSI.

The CPU 13 constitutes, together with the ROM 12 and the RAM 14, a microcomputer included in the optical disc apparatus 1. The ROM 12, which also functions as a storage medium, stores a program including a control program, which will be described later and is written in a code readable by the CPU 13. CPU13 is RO
The operation of each unit described above is controlled according to the program stored in M12, and the data and the like necessary for control are temporarily stored in the RAM 14. When the power of the optical disk device 1 is turned on, the programs stored in the ROM 12 are loaded (installed) in the main memory (not shown) of the CPU 13. This CPU 13
As one of the control processes by the
Control to record D + R with Multi-Session Layout (multi-session recording method), first session (Session)
The data recording capacity at the time of session closing is checked, and if the result of the check is that the data recording capacity is small, processing for extending the termination information (Closure) and closing the session is included.

Next, P as the information processing apparatus described above is used.
C101 will be described. The PC here is an abbreviation for a personal computer. FIG. 2 is a block diagram showing a schematic configuration of the PC 101 connected to the optical disc device.

The PC 101 includes a ROM 102 and a RAM 10
CPU 104 constituting a microcomputer together with CPU 3
The respective parts are connected to each other via the bus line 105. Fixed data is fixedly recorded in the ROM 102, and variable data is variably recorded in the RAM 103. HDD for such a microcomputer
Storage devices such as a (hard disk drive) 106, an FDD (flexible disk drive) 107, and a CD-ROM drive 108 are connected via a bus line 105. The HDD 106 stores an OS (operating system), various application programs, and the like, and a part thereof is copied to the RAM 103 at the time of startup and used by the CPU 104 for controlling each unit.

The CPU 104 further includes a display 1
09, an input device 110 including a keyboard and a mouse,
The interface 111 is connected via the bus line 105, and connection with an external device is possible via the interface 111. For example, the optical disk device 1 described above is also connected to the PC 1 via the interface 111.
01 is connected.

FIG. 3 is a schematic diagram showing an example of the multi-session format of the DVD + R which is the optical disc 2.
In the example shown in FIG. 3, three sessions 201 of 1 to 3 are generated on the optical disc 2, and the rest are unrecorded. As shown in FIG. 3, in the DVD + R, recording is performed from the inner circumference side to the outer circumference side of the disc. The first session 201 is a lead-in (Le
It is composed of an ad-in 211, a data area 221, and a closure 231. The next session 201 is composed of an intro 212, a data zone 221, and a closure 231. The last session consists of an intro 212, a data zone 221, and a lead-out 232.

FIG. 4 is an explanatory diagram showing an outline of the data structure in the DVD + R which is the optical disc 2 of the multi-session format. In FIG. 3, an example of the multi-session format of the DVD + R which is the optical disc 2 is shown very schematically.
Is. In other words, the DVD + R which is the optical disc 2,
The inner drive area (Inner Drive Area) 241 is recorded as the first recorded content starting from the inner circumference side of the disc, and each session 201 is subsequently recorded. Then, in FIG. 4, the session N (Session
The last recorded content following the last session 201 shown as (N) is the outer drive area (Outer
Drive Area) 251 is recorded.

FIG. 5 is an explanatory diagram showing details of the data structure in the DVD + R of the single session format. In FIG. 4, the recorded contents of the DVD + R which is the optical disc 2 are omitted. About this omitted part, D of the single session format shown in FIG.
Since it has commonality with the data structure of VD + R, the data structure of the DVD + R which is the optical disc 2 of the multi-session format will be described with reference to FIG.

First, the inner drive area 241 will be described. In the inner drive area 241, each recording content shown in FIG. 5 is recorded. In particular, a TOC zone (TOC (Table of Contents) Zone) 242 is provided at the end of the inner drive area 241, and management information of the entire optical disc 2 is recorded in the TOC zone 242.

Here, FIG. 6 is an explanatory view showing the data structure of the TOC zone 242, and FIG. 7 is a diagram showing T in the TOC zone 242.
It is explanatory drawing which shows the data structure of OC item (TOC Item) 243. The contents of the TOC zone 242 are as shown in FIG. 6, and in FIG. 6, the RESERVED area is an unused area 1001. Also, TOC Zone 2
A plurality of TOC items 243 are recorded in 42, and the contents of each TOC item 243 are as shown in FIG. 7. As can be seen from FIG. 7, each TOC item 2
43 also has an unused area 1001 which is RESERVED.

Next, the lead-in 211 in the first session 201 will be described. This lead-in 2
In 11, the contents as shown in FIG. 5 are recorded. In such recorded contents, the Guard Zone, the Reserved Zone, and the Buffer Zone are unused areas 1001.

Next, in all the sessions 201, desired data can be freely written in the data zone 221.

The closure zone 231 following the data zone 221 has a buffer zone 2
33 and Outer Session Identification Zone 234
And are recorded. The buffer zone 233 is an unused area 1001.

Next, in the second session 201,
An intro 212 is recorded instead of the lead-in 211. This intro 212 has a buffer zone (Bu
fferZone) 213 is installed, this intro 21
The buffer zone 213 in 2 is an unused area 1001.

Further, in the last session 201, the lead-out 232 is recorded instead of the closure 231. In the lead-out 232, the contents as shown in FIG. 5 are recorded.

In addition, the contents of the outer drive area 251 recorded as the last recorded contents following the last session 201 are as shown in FIG.

FIG. 8 is a flowchart showing the flow of the closed session process, more specifically, the closed session process for the first session 201. This close session process is performed by the CP of the optical disc device 1 according to a computer program recorded as firmware in the ROM 12 of the optical disc device 1 as an example.
It is executed by U13. In this case, the ROM 12 serves as a storage medium that stores a computer program.

However, the present invention is not limited to this, and is executed by the CPU 104 of the PC 101 transmitting an operation command to the optical disc device 1 according to the computer program stored in the HDD 106 of the PC 101 and copied to the RAM 103 when the PC 101 is started. May be built in. In this case, the RAM 103 of the PC 101
The computer program copied to the computer may be stored in the HDD 106 in the form of an application program or incorporated in the OS. Then, such an application program is the HDD 1
In the case of being stored in the storage medium 06, such an application program is recorded in a recording medium such as an FD or a CD-ROM for distribution, and is stored in the FD of the PC 101.
The data is read by the D107 or the CD-ROM drive 108 and stored in the HDD 106. Therefore, in the example illustrated here, the HDD 106, the RAM 103, the FD, and the C
The D-ROM serves as a storage medium that stores a computer program.

In the two examples described above, one of the optical disk device 1 and the PC 101 is a computer that executes the process according to the flowchart shown in FIG. 8 peculiar to the present embodiment. Without being limited to
The system may be constructed so that such processing is executed in accordance with a computer program distributed and installed in both the optical disk device 1 and the PC 101. In any case, when the PC 101 side executes all or part of the closed session processing, the optical disc apparatus 1
A computer program that enables execution of the processing illustrated in FIG. 8 is installed in the PC 101.

The close session process will be described. First, prior to such a close session process, the optical disc apparatus 1 always executes the steps, means and functions of recording data in the data zone 221 in the session 201 which is the first recording section. After that, the optical disc device 1 continues the data recording to the data zone 221 in the first session 201 and then the closure 2 which is the termination information indicating the end of the first session 201.
Perform steps, means, and functions to record 31.

When executing the steps, means and functions of recording the closure 231, the data write amount is checked (step S11) as shown in the flowchart of FIG. 8 and the data write amount exceeds the predetermined amount. It is determined whether or not (step S12), and if not exceeded (N of step S12), the closure 23
1 is extended to a predetermined position and written (step S1
3) If it exceeds (Y in step S12), write the normal size closure 231 (step S12).
14).

That is, the process of step S11 is a step, means, and function for determining whether or not the closure 231 recorded on the optical disc 2 reaches a prescribed area beyond the predetermined range from the center of the optical disc 2. This kind of processing is required because in a DVD-ROM disc, information is recorded up to a radial position of 35 mm on the disc. This is because, if is not recorded, the DVD-ROM drive cannot perform a normal reading operation. That is, in the present embodiment, when the first session 201 is recorded on the optical disc 2 which is a DVD + R disc, the compatibility is such that the recorded information can be reproduced by the DVD-ROM drive for reproducing the DVD-ROM disc. It is possible to have.

Therefore, in the present embodiment, step S1
The closure 23 recorded on the optical disk 2 by the process 1
It is determined whether or not 1 reaches a prescribed area beyond the predetermined range from the center of the optical disk 2, that is, an area at a radial position of 30 mm of the disk where the DVD-ROM drive can perform a normal reading operation. However, if it is determined that it has not reached, in the process of step S13, the closure 231 is extended to a predetermined position, that is, the region of the radial position of the disc of 30 mm and written. Therefore, the process of step S13 is called a step, means or function of extending and recording the closure 231 until it reaches the specified area in the step of recording the closure 231 when it is determined that the closure 231 does not reach the specified area. It will be.

At this time, in the process of step S11, the data write amount is checked as a process for determining whether or not the closure 231 recorded on the optical disc 2 reaches an area of 30 mm from the center of the optical disc 2. That is, the amount of data up to the end of the inner drive area 241 and the end of the closure 231 in the first session 201 is calculated, and the closure 231 recorded on the optical disc 2 is 3 times from the center of the optical disc 2 from the calculated amount of data.
It is determined whether or not the area reaches 0 mm. At this time, to determine the position where the data reaches from the data amount,
The relation between the two may be stored in any storage area, for example, the ROM 12 of the optical disc device 1 or the program stored in the HDD 106 of the PC 101. This stored content is, for example, the content illustrated in FIG.

FIG. 9 is an explanatory view showing at which radial position on the disc each physical sector number (Physical Sector Number) of the DVD + R disc is located. As shown in FIG. 9, the position of the disk radial position of 30 mm is located between the physical sector numbers 7100 and 7200. Therefore, as an example, in the process of step S12 in the flowchart shown in FIG. 8, if the physical sector number is 7200 or more, it may be determined that the predetermined amount has been exceeded. However, the above description does not mean the specific content itself of the processing, but merely the conceptual content. Therefore, as a specific process, a process of determining that the data amount is equal to or larger than the physical sector number such as 7200, a process of determining that the data amount is equal to or smaller than the physical sector number, or the like. A process of determining that the physical sector number is exceeded, a process of determining that the physical sector number is less than that, and the like can be executed.

Here, as the extension process of the closure 231 executed in step S13, various methods can be adopted. Hereinafter, three methods regarding the extension process of the closure 231 will be described with reference to FIGS. 10 to 13.

FIG. 10 is a schematic diagram showing the data structure of the conventional closure 231, FIG. 11 is a schematic diagram showing an example of the closure 231 as extended termination information, and FIG.
Is a schematic diagram showing another example of the closure 231 as the extended termination information, and FIG. 13 is a schematic diagram showing yet another example of the closure 231 as the extended termination information.

As shown in FIG. 4, the closure 231 is composed of a buffer zone 233 and an outer session identification zone 234. The number of physical sectors in the conventional buffer zone 233 and the outer session identification zone 234 is the number of sectors 768 and the number of sectors 256, respectively, as shown in FIGS. On the other hand, in order to extend the closure 231 in the process of step S13 in the flowchart of FIG. 8, the buffer zone 233 is extended (see FIG. 11) and the outer session identification zone 234 is extended (FIG. 12). (See FIG. 13), a method of adding a buffer zone 233 after the outer session identification zone 234 (see FIG. 13) can be implemented. In this case, the extension amount of the closure 231 is such that the closure 231 reaches a region of 30 mm from the center of the optical disc 2.

Here, when the buffer zone 233 is extended as shown in FIG. 11, and as shown in FIG. 13, the outer session identification zone 23 is used.
When further adding the buffer zone 233 after 4, it is sufficient to record “0” continuously. On the other hand, as shown in FIG. 12, in order to extend the outer session identification zone 234,
For example, it is of course possible to adopt a method of continuously recording "0", but it is also possible to adopt a method of repeatedly copying data to be copied to the outer session identification zone 234. Is.

As described above, in the present embodiment, even when the amount of data recorded in the data zone 221 in the first session 201 is small, a predetermined range from the center of the optical disc 2, for example, exceeding 30 mm is specified. Data can be recorded up to the area. Therefore,
A normal reading operation cannot be performed unless data is recorded in a range within a specified area that exceeds a predetermined range from the center of the optical disc 2, for example, in a DVD-ROM drive for DVD-ROM reproduction, normal data Various playback functions can be provided.

Now, let us return to the flow chart shown in FIG. In this flowchart, the position information of the closure 231 is stored in the optical disc 2 as a process following step S13.
The writing process is executed in the unused area 1001 (step S15). Such processing is required for the closure 231 which normally has the data amount shown in FIG. Therefore, if the length of the closure 231 changes, the next session 20 in the optical disk device 1 will be changed.
There is a possibility that the start position of 1 cannot be determined. Therefore, in the present embodiment, by writing the position information of the closure 231 to the unused area 1001 of the optical disc 2,
It is possible to easily teach the start position of the next session 201.

Here, the unused area 100 of the optical disk 2
1 is, for example, Guard in the lead-in 211.
An unused area 1001 such as Zone, Reserved Zone, and Buffer Zone (see FIG. 5), a buffer zone 233 which is an unused area 1001 in the closure 231, and a buffer zone 213 which is an unused area 1001 in the intro 212 (see FIG. 4), an unused area 1001 in the TOC zone 242, RESERVED (see FIGS. 6 and 7), and the like can be used.

In the above-described embodiment, the case where the optical disc 2 is a DVD + R has been described, but the present invention is not limited to this, and various information recording media can be used as long as they are data recorded by being divided into a plurality of recording sections such as sessions. This information recording medium can be used as the optical disc 2.

Further, the optical disk device 1 of the present embodiment
May be a so-called built-in type, which is arranged in the same housing as the host, for example, the PC 101, or may be a so-called external type, which is arranged in a housing different from the host.

[0104]

The effects of the invention are set forth in claims 1, 12, 23, 24, 25 and 2.
In the inventions described in 6, 28, 30, 32, data can be recorded from the center of the information recording medium to a specified area exceeding a predetermined range. Therefore, the predetermined range from the center of the information recording medium can be recorded. It is possible to provide a normal reproducing function of data to a reproducing device that cannot perform a normal reading operation unless data is recorded in a range within the specified area that exceeds.

The invention described in claims 2 and 13 is DVD + R.
Since the information recording conforming to the DVD + R standard is performed on the information recording medium conforming to the standard, even if the data recorded in the first session is extremely short, such data is recorded. The read DVD + R can be normally read by an information reproducing device for DVD-ROM, for example.

The inventions according to claims 3 and 14 are the buffer zone of the closure (Closure) which becomes the termination information.
Zone) to extend the end information until it reaches the specified area. For example, a predetermined range can be set from the center of the information recording medium by an extremely easy method of only extending the recording information in the buffer zone. Data can be recorded up to a specified area exceeding.

According to the inventions of claims 4 and 15, the outer session identification zone (Outer Session Identi) of the closure (Closure) serving as the termination information.
For example, Inner Session Identifica is used to extend the end information until it reaches the specified area.
Option Zone multiple times Outer Session Identification Z (Outer Session Identification Z
It is possible to record data from the center of the information recording medium to a specified area exceeding a predetermined range by an extremely easy method of simply copying to one).

According to the fifth and sixteenth aspects of the present invention, the outer session identification zone (Outer Session Id) of the closure (Closure) serving as the termination information is set.
entification Zone) followed by Buffer Zone
By additionally recording ne), the end information is extended until it reaches the specified area, so that normal information recording processing for such a closure (Closure) can be performed without changing the normal information recording processing for such a closure (Closure). Data can be recorded from the center of the information recording medium to a specified area exceeding a predetermined range by an extremely easy method of subsequently additionally recording a buffer zone.

Claims 6, 7, 8, 9, 10, 11, 1
Since the inventions described in 7, 18, 19, 20, 21, and 22 further include the step of recording the position information of the termination information in the unused area of the information recording medium, even if the length of the termination information changes, It is possible to easily teach the start position of the recording section of.

According to the twenty-seventh, twenty-ninth, thirty-first and thirty-third aspects of the present invention, since the computer program is stored in the storage medium, the computer program can be distributed while being stored in the information recording medium.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an optical disc device as an information recording device as an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a personal computer as an information processing device connected to an optical disc device.

FIG. 3 is a schematic diagram showing an example of a multi-session format of a DVD + R disc.

FIG. 4 is an explanatory diagram showing an outline of a data structure in a DVD + R disc of a multi-session format.

FIG. 5: Single session format DVD + R
It is explanatory drawing which shows the detail of the data structure in a disc.

FIG. 6 is an explanatory diagram showing a data structure of TOC (Table of Contents).

[Figure 7] TOC Item in TOC (Table of Contents)
It is explanatory drawing which shows the data structure of.

FIG. 8 is a flowchart showing the flow of a close session process.

FIG. 9: Physical sector numbers (Ph
It is an explanatory view showing in which radial position on the disc the ysical Sector Number) is located.

FIG. 10 is a schematic diagram showing a data structure of a conventional closure (Closure).

FIG. 11: Closure (Cl as extended terminal information
is a schematic diagram showing an example of an osure).

FIG. 12: Closure (Cl as extended terminal information
is a schematic view showing another example of the osure).

FIG. 13: Closure (Cl as extended terminal information
is a schematic view showing still another example of the osure).

[Explanation of symbols]

2 information recording medium (optical disk) 1 information recording device (optical disk device) 12, 103, 106 storage medium (ROM, RAM,
HDD) 101 Information processing device (PC) 201 Recording category (Session) 211 Lead-in 212 Intro 231 Termination information, Closure 233 Buffer Zone 234 Outer Session Aiden Outer Session Identification Zone 235 Buffer Zone 242 TOC Zone (TOC (Table of Contents))
Zone) 1001 unused area

Claims (33)

[Claims] 1. An information recording method in which a disc-shaped information recording medium is divided into a plurality of recording sections and data is optically recorded from the inner diameter side to the outer diameter side of the information recording medium. Recording data in a section, recording end information indicating the end of the first recording section following the step of recording the data, the end information recorded in the information recording medium is the information recording A step of determining whether to reach a specified area exceeding a predetermined range from the center of the medium; and, if it is determined that the end information does not reach the specified area, in the step of recording the end information, And a step of recording the end information by extending it until it reaches the specified area. 2. The information recording method according to claim 1, wherein information recording conforming to the DVD + R standard is performed on the information recording medium conforming to the DVD + R standard. 3. In the step of recording the end information by extending it until it reaches the specified area, a buffer zone (Buffer Zon) of a closure (Closure) which becomes the end information.
The information recording method according to claim 2, wherein e) is extended and recorded. 4. The step of recording the end information by extending it until it reaches the specified area, the outer session identification zone of a closure that becomes the end information.
3. The information recording method according to claim 2, wherein the extension zone is recorded. 5. The step of extending and recording the end information until reaching the specified area, the outer session identification zone of a closure that becomes the end information.
3. The information recording method according to claim 2, wherein the end information is extended and recorded by additionally recording a buffer zone after the option zone. 6. The information recording method according to claim 1, further comprising the step of recording the position information of the termination information in an unused area of the information recording medium. 7. The information recording method according to claim 2, further comprising the step of recording the position information of the termination information in an unused area of the information recording medium. 8. The information recording method according to claim 7, wherein the position information of the termination information is recorded in an unused area in the lead-in. 9. The information recording method according to claim 7, wherein the position information of the termination information is recorded in an unused area in a closure that serves as the termination information. 10. The information recording method according to claim 7, wherein the position information of the termination information is recorded in an unused area in the intro. 11. The information recording method according to claim 7, wherein the position information of the termination information is recorded in an unused area in a TOC zone (TOC (Table of Contents) Zone). 12. An information recording apparatus for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. Means for recording data in the section, means for recording end information indicating the end of the first recording section following the recording of the data, and the end information recorded in the information recording medium is the information recording medium A means for determining whether to reach a specified area exceeding a predetermined range from the center, and when it is determined that the termination information does not reach the specified area, when recording the termination information, the termination information And a means for recording by extending the data until it reaches the specified area. 13. The information recording apparatus according to claim 12, wherein information recording conforming to the DVD + R standard is performed on the information recording medium conforming to the DVD + R standard. 14. The information according to claim 13, wherein when the end information is extended and recorded until it reaches the specified area, a buffer zone of a closure serving as the end information is extended and recorded. Recording device. 15. An outer session identification zone of a closure that becomes the termination information when the termination information is extended and recorded until it reaches the specified area.
The information recording apparatus according to claim 13, wherein e) is extended and recorded. 16. An outer session identification zone of a closure that becomes the end information when the end information is extended and recorded until it reaches the specified area.
The information recording apparatus according to claim 13, wherein the end information is extended and recorded by additionally recording a buffer zone after (e). 17. The information recording apparatus according to claim 12, further comprising means for recording the position information of the termination information in an unused area of the information recording medium. 18. The information recording apparatus according to claim 13, further comprising means for recording the position information of the termination information in an unused area of the information recording medium. 19. The position information of the termination information is recorded in an unused area in a lead-in.
Information recording device described. 20. The information recording apparatus according to claim 18, wherein the position information of the termination information is recorded in an unused area in a closure that serves as the termination information. 21. The information recording apparatus according to claim 18, wherein the position information of the termination information is recorded in an unused area in the intro. 22. The information recording apparatus according to claim 18, wherein the position information of the termination information is recorded in an unused area in a TOC zone (TOC (Table of Contents) Zone). 23. An information processing device for controlling an information recording device for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. In the information recording apparatus, means for recording data in the first recording section, and means for causing the information recording apparatus to record end information indicating the end of the first recording section following the recording of the data. A means for determining whether the termination information recorded on the information recording medium reaches a prescribed area exceeding a predetermined range from the center of the information recording medium, and the termination information does not reach the prescribed area. If determined, in the information recording device for recording the termination information,
An information processing apparatus, comprising: a unit that extends and records the terminal information until it reaches the specified area. 24. An information processing device for controlling an information recording device which divides a disc-shaped information recording medium into a plurality of recording sections and optically records data from the inner diameter side to the outer diameter side of the information recording medium. In the information recording apparatus, means for recording data in the first recording section, and means for causing the information recording apparatus to record termination information indicating the end of the first recording section following the recording of the data. A means for causing the information recording device to determine whether or not the termination information recorded on the information recording medium reaches a prescribed area exceeding a predetermined range from the center of the information recording medium; When it is determined that the specified area is not reached, the information recording device that records the termination information,
An information processing apparatus, comprising: a unit that extends and records the terminal information until it reaches the specified area. 25. An information recording device for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium, and the information recording device. And an information processing device that issues an information recording command to the information recording device, the information processing device and the information processing device are concentrated in one of the information recording device and the information processing device. A function of recording data in the first recording section in the information recording apparatus, and a function of recording termination information indicating the end of the first recording section following the recording of the data in the information recording apparatus And a function of determining whether or not the termination information recorded on the information recording medium reaches a specified area exceeding a predetermined range from the center of the information recording medium, and the termination information is When it is determined that the specified area has not been reached, in the information recording device, when recording the termination information, a function of extending and recording the termination information until reaching the specified area is exerted. An information recording system equipped with. 26. Installed in a computer equipped with an information recording device which divides a disc-shaped information recording medium into a plurality of recording sections and optically records data from the inner diameter side to the outer diameter side of the information recording medium. , A means for recording data in the first recording section, a means for recording termination information indicating the end of the first recording section following the recording of the data, and the information recording medium. A means for determining whether the termination information reaches a prescribed area exceeding a predetermined range from the center of the information recording medium; and when the termination information is determined not to reach the prescribed area, the termination information A machine-readable computer program for executing, when recording information, a means for extending and recording the terminal information until it reaches the specified area. 27. A storage medium storing the computer program according to claim 26. 28. An information processing device for controlling an information recording device for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. A means for causing the information recording device to record data in the first recording section, the information recording device being installed in a computer provided with, and ending the first recording section following the recording of the data in the information recording device. Means for recording the end information indicating, and a means for determining whether or not the end information recorded on the information recording medium reaches a prescribed area exceeding a predetermined range from the center of the information recording medium; When it is determined that the information does not reach the specified area, the information recording device that records the termination information,
A machine-readable computer program for executing a means for extending and recording the termination information until the termination information is reached. 29. A storage medium for storing the computer program according to claim 28. 30. An information processing device for controlling an information recording device for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium. A means for causing the information recording device to record data in the first recording section, the information recording device being installed in a computer provided with, and ending the first recording section following the recording of the data in the information recording device. And a means for recording end information indicating that the information recording device determines whether or not the end information recorded on the information recording medium reaches a prescribed area beyond a predetermined range from the center of the information recording medium. And means for causing the information recording device to record the termination information when it is determined that the termination information does not reach the specified area,
A machine-readable computer program for executing a means for extending and recording the termination information until the termination information is reached. 31. A storage medium storing the computer program according to claim 30. 32. A computer provided with an information recording device for dividing a disc-shaped information recording medium into a plurality of recording sections and optically recording data from the inner diameter side to the outer diameter side of the information recording medium; The information recording device and the information processing device are installed in one of the computers included in the information processing device that issues an information recording command to the information recording device, intensively installed in one of the computers, or installed in both computers. Dispersed in both, in the information recording device, a function of recording data in the first recording section, and in the information recording apparatus, following the recording of the data, the end information indicating the end of the first recording section. A recording function, and a prescribed area in which the terminal information recorded on the information recording medium exceeds a predetermined range from the center of the information recording medium. And a function of determining whether to reach the specified area, if the end information is determined not to reach the specified area, in the information recording device, when recording the end information, the end information in the specified area. A machine-readable computer program that executes the means for exerting the function of extending and recording until reaching. 33. A storage medium for storing the computer program according to claim 32.