JP2003217232A - Method for recording information, information recording device, information recording program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for recording information reducing unnecessary regions in the recording region of an information recording medium, and capable of increasing regions capable of recording data. <P>SOLUTION: In recording terminal information (for example, closure) on the recording region, when a dummy data region (for example, run-in) in present at the outer peripheral side of the final data region contained in the recording region (step 703), the dummy data is used as a part of the terminal information and the rest of the terminal information is recorded on the dummy data region in succession (Step 707). There is no dummy data region between the final data region and the terminal data region even if the dummy data region is present at the outer peripheral side of the final data region. This prevents the presence of the meaningless dummy data region between the final data region and the terminal data. <P>COPYRIGHT: (C)2003,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 method, an information recording apparatus, an information recording program and a recording medium, and more specifically, a recording area is divided into a plurality of data areas, and the divided data is divided. Information recording method using information recording medium capable of recording data in each area, information recording apparatus suitable for implementing the information recording method, and information recording for causing a computer for controlling the information recording apparatus to execute the information recording method The present invention relates to a program and a recording medium on which the information recording program is recorded.

[0002]

2. Description of the Related Art In recent years, as personal computers have improved in function, audio and video (AV)
o-Visual) It has become possible to handle information. Since the amount of such AV information is very large, a CD (compact disc) or a DVD (digital ve
Optical discs such as rsatile discs) have come to the forefront, and as their prices have decreased, optical disc devices as information recording devices have become popular as one of the peripheral devices of personal computers. As a CD, CD-R
OM, CD-R (CD-recordable) and CD-RW
(CD-rewritable) is a DVD as a DVD
-ROM, DVD-RAM, DVD-R (DVD-recor
dable), DVD-RW (DVD-rewritable), DVD
+ R (DVD + recordable) and DVD + RW (DVD
+ Rewritable), etc., and data is recorded according to a predetermined standard or the like.

For example, a CD-R is a track, a DVD + R
In, data is recorded in the recording area in recording units called fragments. An area including at least one track or fragment to which predetermined information (for example, lead-in and lead-out) is added is called a session. Further, in a write-once optical disc such as a CD-R or a DVD + R, normally, recording is performed sequentially from the inner circumference side (front side) to the outer circumference side (rear side), but a track or fragment is reserved and For example, it is also possible to record information about the file system (hereinafter, abbreviated as “file system information” for convenience).

[0004]

In a DVD + R, for example, when a fragment of a size specified in response to a reservation request from a host device is reserved, the reserved fragment (hereinafter, referred to as "reserved fragment as appropriate" is specified in the specification. (Also referred to as “”), a kind of dummy data called 16-sector run-in (Run-In) is recorded. This run-in is added to enable normal reproduction of the data recorded in the fragment next to the reserved fragment when the reserved fragment is in the unrecorded state.

Further, according to the DVD + R standard, when recording in a session is completed, a closure (Clos) which indicates the end of the session is provided behind the session.
ure) is written and the session is closed. Further, it is stipulated that when the recording on the disc is completed, a lead-out indicating the end of the area where the data is recorded on the disc is written and the disc is closed.

Therefore, when the session in which the reserved fragment is the outermost fragment (hereinafter also referred to as the "final fragment") is closed, the closure is written after the run-in. In this case, the run-in is a completely meaningless area, and there is a disadvantage that the recording area is wasted. Also,
The outermost session (hereinafter “final session”)
When the disc whose final fragment (also referred to as the last fragment) is a reserved fragment is closed, the lead-out is written after the run-in. In this case as well, the run-in is a completely meaningless area, and there is a disadvantage that the recording area is wasted.

The present invention has been made under the above circumstances, and a first object thereof is to reduce an unnecessary area in a recording area of an information recording medium and increase a data recordable area. It is to provide an information recording method.

A second object of the present invention is to provide an information recording apparatus capable of reducing the unnecessary area in the recording area of the information recording medium and increasing the data recordable area.

A third object of the present invention is to reduce the unnecessary area in the recording area of the information recording medium and increase the recordable area of data, which is executed by the control computer of the information recording apparatus. To provide an information recording program that can

A fourth object of the present invention is to provide a recording medium capable of reducing unnecessary areas in a recording area of an information recording medium and increasing a data recordable area by causing a computer to execute the recording medium. To provide.

[0011]

According to a first aspect of the present invention, a spiral or concentric recording area is divided into a plurality of data areas as a target medium for information recording, and each divided data area is divided into a plurality of data areas. An information recording method using an information recording medium capable of recording data, wherein when recording the termination information in the recording area, a data area on the outermost peripheral side of the data areas included in the recording area is recorded. When a dummy data area in which dummy data is recorded exists on the outer peripheral side, the dummy data is made a part of the termination information, and the remainder of the termination information is recorded following the dummy data area. This is an information recording method.

In the present specification, "dummy data" means data whose value itself does not have specific information.

According to this, when recording the termination information in the recording area, the outermost of the data area on the outermost side of the data areas included in the recording area (hereinafter, also referred to as "final data area" for convenience). When the dummy data area exists on the side, the dummy data is made a part of the termination information, and the remainder of the termination information is recorded following the dummy data area. That is, even when the dummy data area exists on the outer peripheral side of the final data area, by making the dummy data a part of the termination information when recording the termination information, as a result, the final data area and the termination information are recorded. There is no dummy data area between and. Therefore, for example, when the dummy data area is added on the assumption that the data area exists on the outer peripheral side, it is possible to prevent the meaningless dummy data area from existing between the final data area and the termination information. As a result, it is possible to reduce the unnecessary area in the recording area of the information recording medium and increase the data recordable area.

In this case, various kinds of dummy data can be considered, but the dummy data can be run-in as in the information recording method according to the second aspect.

In each of the information recording methods described in claims 1 and 2, as in the information recording method described in claim 3, the recording area includes at least one session including a plurality of data areas. The termination information may be session closing information recorded when the session is closed. In such a case, even when a dummy data area exists on the outer peripheral side of the final data area, the dummy data is made a part of the session close information when the session is closed, and as a result, the dummy data area becomes the final data area. The dummy data area does not exist between the session close information and the session close information.

In this case, as in the information recording method described in claim 4, the information recording medium is an information recording medium compliant with the DVD + R standard, and the close information of the session is a closure. You can In this case, since the 768 sector at the beginning of the closure is the spare area, there is no inconvenience even if the dummy data area is mixed.

In each of the information recording methods described in claim 1 or 2, as in the information recording method described in claim 5, the termination information is recorded when additional recording of data to the recording area is prohibited. It can be determined that the information cannot be additionally written. In such a case, even if a dummy data area exists on the outer peripheral side of the final data area, the dummy data is made a part of the additional write disable information when disabling additional data write, and as a result, the final data The dummy data area does not exist between the area and the information that cannot be additionally written.

In this case, as in the information recording method according to the sixth aspect, the information recording medium is an information recording medium compliant with the DVD + R standard, and the non-recordable information is a lead-out. You can In such a case, since "00H" is recorded as data in the 768 sector at the beginning of the lead-out, even if a dummy data area in which "00H" is used as dummy data is mixed, there is no problem. There is no.

In a seventh aspect of the present invention, as a medium for recording information, a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. An information recording method using an information recording medium, comprising: a first step of reserving a data area in response to an external data area reservation request; and adding the additional data in response to an input of additional information of dummy data from the outside. Based on the information, it is determined whether or not to add the dummy data to the data area reserved in the first step. As a result of the determination, if the dummy data is added, the data is reserved in the first step. And a second step of recording dummy data on the outer peripheral side of the data area.

In the present specification, "additional information" includes not only information requesting addition of dummy data but also information requesting not addition of dummy data.

According to this, when the data area is reserved in response to the data area reservation request from the outside, based on the additional information of the dummy data further input from the outside,
Whether to add dummy data to the reserved data area (hereinafter referred to as "reserved data area") is determined. As a result of the determination, when adding dummy data, the dummy data is added to the outer peripheral side of the reserved data area. Is recorded. That is, the dummy data is added only when the dummy data addition request is input from the outside. Therefore, it is possible to prevent meaningless dummy data from being added to the reserved data area when the reserved data area is expected to be the final data area in advance, and as a result, the information recording medium It is possible to reduce the unnecessary area in the recording area and increase the data recordable area.

In this case, when there is a recording data recording request from the outside as in the information recording method according to the eighth aspect, the data area in which the recording data is recorded (hereinafter, also referred to as “designated data area”). ), The previous data area on the inner circumference side is a previously reserved data area, and when there is no dummy data area on the outer circumference side of the immediately previous data area, prior to the recording of the recording data, The method may further include a third step of recording dummy data on the outer peripheral side of the immediately preceding data area. In such a case, for example, even if the dummy data is not added when the immediately previous data area was previously reserved, the dummy data area should be surely present between the immediately previous data area and the designated data area. You can

In each of the information recording methods described in claims 7 and 8, as in the information recording method described in claim 9, when a data area reservation request is made from the outside, the data area to be reserved is If the immediately preceding data area on the circumference side is a previously reserved data area and no dummy data area exists on the outer circumference side of the immediately preceding data area, the immediately preceding data area is reserved before the data area is reserved. A fourth step of recording dummy data on the outer peripheral side of the area can be further included. In such a case, for example, even if the dummy data is not added when the immediately previous data area was previously reserved, the dummy data area is surely provided between the immediately previous data area and the currently reserved data area. Can be present.

In each of the information recording methods described in claims 7 to 9, like the information recording method described in claim 10, the information recording medium is an information recording medium compliant with the standard of DVD + R, and the dummy. The data can be run-in.

According to an eleventh aspect of the present invention, as a medium for recording information, a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. An information recording device using a different information recording medium, comprising: communication control means for controlling communication with an external device; and a signal for requesting recording of termination information from the external device, which is input via the communication control means. If a dummy data area exists on the outer peripheral side of the outermost data area among the data areas included in the recording area, the dummy data is made a part of the termination information, and the dummy data area is stored in the dummy data area. And an end information recording means for continuously recording the rest of the end information.

According to this, when the signal for requesting the recording of the termination information is input from the external device through the communication control means, the termination information recording means causes the dummy data area to exist on the outer peripheral side of the final data area. In this case, the dummy data is made a part of the termination information, and the rest of the termination information is recorded following the dummy data area. That is, even when the dummy data area exists on the outer peripheral side of the final data area, by making the dummy data a part of the termination information when recording the termination information, as a result, the final data area and the termination information are recorded. There is no dummy data area between and. Therefore, for example, when the dummy data area is added on the assumption that the data area exists on the outer peripheral side, it is possible to prevent the meaningless dummy data area from existing between the final data area and the termination information. As a result, it is possible to reduce the unnecessary area in the recording area of the information recording medium and increase the data recordable area.

In this case, as in the information recording apparatus according to claim 12, area reservation means for reserving a data area in response to a signal from the external apparatus requesting the reservation of the data area; and a dummy from the external apparatus. Addition determination means for determining whether to add dummy data to the data area reserved by the area reservation means, based on the additional information of the data; and dummy data addition as a result of the determination by the addition determination means. In this case, it is possible to further include dummy data adding means for recording dummy data on the outer peripheral side of the data area reserved by the area reservation means. In such a case, since the dummy data is added only when the dummy data addition request is input from the external device, it is preliminarily planned by the external device that the reserved data area will become the final data area. In addition, it is possible to prevent meaningless dummy data from being added to the reserved data area.

In each of the information recording devices described in claims 11 and 12, like the information recording device described in claim 13, the information recording medium is an information recording medium compliant with the DVD + R standard, and the end The information can be closures or lead-outs.

In a fourteenth aspect of the present invention, as a medium for recording information, a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. An information recording device using a different information recording medium, and an area reservation means for reserving a data area in response to a signal from an external device requesting the reservation of the data area; and based on additional information of dummy data from the external device. An addition judgment means for judging whether or not to add dummy data to the data area reserved by the area reservation means; and a case where the dummy data is added as a judgment result of the addition judgment means, the area The information recording device comprises: dummy data adding means for recording dummy data on the outer peripheral side of the data area reserved by the reservation means.

According to this, when the signal requesting the reservation of the data area is input from the external device, the area reservation means reserves the data area. Further, when the additional information of the dummy data is input from the external device, the addition determining means determines whether to add the dummy data to the data area reserved by the area reservation means. Then, when the result of adding the dummy data is obtained, the dummy data adding means records the dummy data on the outer peripheral side of the data area reserved by the area reservation means. That is, the dummy data is added only when the dummy data addition request is input from the external device. Therefore, it is possible to prevent meaningless dummy data from being added to the reserved data area when the external device preliminarily schedules the reserved data area as the final data area, and as a result, the information recording medium. Reduces unnecessary areas in the recording area of
It becomes possible to increase the data recordable area.

In each of the information recording devices described in claims 12 and 14, when the signal requesting recording of the recording data is received from the external device as in the information recording device described in claim 15, the recording is performed. If the immediately preceding data area on the inner circumference side of the data area in which the data is recorded is the previously reserved data area and there is no dummy data area on the outer circumference side of the immediately preceding data area, the recording is performed. Prior to data recording, a first dummy data recording means for recording dummy data on the outer peripheral side of the immediately preceding data area may be further provided. In such a case, for example, even when the dummy data is not added when the immediately previous data area was previously reserved, the dummy data area can be surely present on the outer peripheral side of the immediately previous data area. .

In each of the information recording devices described in claims 12, 14 and 15, when the signal requesting the reservation of the data area is received from the external device, as in the information recording device described in claim 16, If the immediately preceding data area on the inner circumference side of the reserved data area is the previously reserved data area and there is no dummy data area on the outer circumference side of the immediately preceding data area, the data area is reserved. Prior to the above, second dummy data recording means for recording dummy data on the outer peripheral side of the immediately preceding data area may be further provided. In such a case, for example, even when the dummy data is not added when the immediately previous data area was previously reserved, the dummy data area can be surely present on the outer peripheral side of the immediately previous data area. .

Claims 11, 12, 14, 15, 16
In each of the information recording devices described in (1), the information recording medium is a DVD + R like the information recording device according to (17).
It is possible that the dummy data is a run-in.

According to the eighteenth aspect of the present invention, as a medium for recording information, a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. An information recording program used in an information recording device using a different information recording medium,
A procedure of determining whether or not a dummy data area exists on the outer peripheral side of the outermost data area among the data areas included in the recording area in response to a recording request for the termination information in the recording area; As a result of the determination, when the dummy data area exists, the dummy data is made a part of the termination information, and a procedure of recording the remainder of the termination information following the dummy data area; It is an information recording program to be executed by a computer for controlling the apparatus.

When this information recording program is installed in the control computer, in response to the input of the recording request for the termination information in the recording area, the computer determines whether or not the dummy data area exists on the outer peripheral side of the final data area. If the dummy data area is present as a result, the dummy data is made a part of the termination information, and the remainder of the termination information is recorded following the dummy data area. That is, even if a dummy data area exists on the outer peripheral side of the final data area due to a request to record the termination information, the dummy data is part of the termination information when the termination information is recorded. In this case, no dummy data area exists between the final data area and the end information.
Therefore, when the program is executed by the control computer of the information recording apparatus, for example, when the dummy data area is added on the assumption that the data area exists on the outer peripheral side, the final data area and the termination information are added. It is possible to prevent the existence of a meaningless dummy data area between and, and as a result, it is possible to reduce the unnecessary area in the recording area of the information recording medium and increase the data recordable area.

In this case, the dummy data can be run-in, as in the information recording program according to claim 19.

In each of the information recording programs described in claims 18 and 19, as in the information recording program described in claim 20, the information recording medium is an information recording medium compliant with the DVD + R standard, and the end is recorded. The information can be closures or lead-outs.

In a twenty-first aspect of the invention, as a medium for recording information, a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. An information recording program used in an information recording device using a different information recording medium,
A procedure for reserving a data area based on a reservation request for the data area; a procedure for determining whether to add dummy data to the reserved data area based on additional information of the dummy data; and a result of the determination In the case of adding dummy data, an information recording program for causing a control computer of the information recording apparatus to execute a procedure of recording dummy data on the outer peripheral side of the reserved data area.

When this information recording program is installed in the control computer, the computer reserves the data area in response to the input of the reservation request for the data area. Then, in response to the input of the additional information of the dummy data, the computer determines whether to add the dummy data to the reserved data area. If the dummy data is added as a result, the computer reserves the data. Dummy data is recorded on the outer peripheral side of the data area. That is, according to the additional information of the dummy data, the dummy data is added only when a dummy data addition request is made. It is possible to prevent meaningful dummy data from being added to the reserved data area. Therefore, by executing the program by the control computer of the information recording apparatus, it is possible to reduce the unnecessary area in the recording area of the information recording medium and increase the data recordable area.

In this case, as in the information recording program according to the twenty-second aspect, based on the recording request for recording data, the immediately preceding data area on the inner circumference side of the data area in which the recording data is recorded is previously A procedure for determining whether or not the data area is a reserved data area; a procedure for determining whether or not a dummy data area exists on the outer peripheral side of the immediately preceding data area; When the data area of is a previously reserved data area and there is no dummy data area on the outer peripheral side of the data area, a procedure for recording dummy data on the outer peripheral side of the immediately preceding data area; Can be further executed. In such a case, for example, even when the dummy data is not added when the immediately previous data area was previously reserved, by inputting a recording data recording request to the computer, in response to the input, With the computer, the dummy data area can surely exist on the outer peripheral side of the immediately previous data area.

In each of the information recording programs described in claims 21 and 22, like the information recording program described in claim 23, the information recording program is located on the inner circumference side of the reserved data area based on the reservation request for the data area. A procedure for determining whether or not the immediately preceding data area is a previously reserved data area; a procedure for determining whether or not a dummy data area exists on the outer peripheral side of the immediately preceding data area; As a result of the determination, when the immediately preceding data area is a previously reserved data area and there is no dummy data area on the outer peripheral side, a procedure for recording dummy data on the outer peripheral side of the immediately previous data area And; can be further executed by the control computer. In such a case, for example, even when dummy data is not added when the immediately previous data area was previously reserved,
By the reservation request for the data area, in response to the input, it becomes possible for the computer to surely make the dummy data area exist on the outer peripheral side of the immediately previous data area.

In each of the information recording programs described in claims 21 to 23, like the information recording program described in claim 24, the information recording medium is an information recording medium compliant with the standard of DVD + R, and the dummy. The data can be run-in.

The invention as set forth in claim 25 is based on claim 18.
A computer-readable recording medium in which the information recording program according to any one of 24 is recorded.

Claims 18 to 2 recorded on this recording medium
By installing and executing the information recording program according to any one of 4 above in a computer, it is possible to reduce unnecessary areas in the recording area of the information recording medium and increase the data recordable area. Becomes

[0045]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
~ It demonstrates based on FIG.

FIG. 1 is a block diagram showing a schematic configuration of an optical disc device 20 as an information recording device according to an embodiment of the present invention.

The optical disk device 20 shown in FIG.
Is a spindle motor 22 for rotationally driving an optical disk 15 as an information recording medium, and an optical pickup device 2.
3, laser control circuit 24, encoder 25, motor driver 27, reproduction signal processing circuit 28, servo controller 33, buffer RAM 34, buffer manager 37, interface 38, ROM 39, CPU 4
0 and RAM 41 and the like. It should be noted that the arrows in FIG. 1 show typical flows of signals and information, and do not show all the connection relations of each block.
Further, in the present embodiment, as an example, the D
VD + R shall be used.

The optical pickup device 23 guides a semiconductor laser as a light source, a light beam emitted from the semiconductor laser to a recording surface of the optical disk 15, and a return light beam reflected by the recording surface to a predetermined light receiving position. The optical system, a light receiver arranged at the light receiving position for receiving the return light flux, and a drive system (focusing actuator, tracking actuator, and seek motor) (all not shown) are configured. Then, a current (current signal) corresponding to the amount of received light is output from the light receiver to the reproduction signal processing circuit 28.

The reproduction signal processing circuit 28 converts a current signal, which is an output signal of the optical pickup device 23, into a voltage signal, and based on the voltage signal, a wobble signal, an RF signal containing reproduction information and a servo signal (focus error). Signal, track error signal). In the reproduction signal processing circuit 28, the ADIP (Address-
in-Pregroove) Extracts information and sync signals. The ADIP information extracted here is output to the CPU 40, and the synchronization signal is output to the encoder 25. Further, the reproduction signal processing circuit 28 performs error correction processing and the like on the RF signal, and then stores it in the buffer RAM 34 via the buffer manager 37. Further, the servo signal is output from the reproduction signal processing circuit 28 to the servo controller 33.

The servo controller 33 generates a control signal for controlling the optical pickup device 23 based on the servo signal and outputs it to the motor driver 27.

The motor driver 27 drives the focusing actuator and the tracking actuator of the optical pickup device 23 based on the control signal from the servo controller 33. Further, in the motor driver 27, based on the instruction from the CPU 40, the spindle motor 22 is controlled so that the linear velocity of the optical disk 15 becomes constant.
And the seek motor of the optical pickup device 23 is driven to control the position of the optical pickup device 23 in the sledge direction (radial direction of the optical disc 15).

In the encoder 25, based on the instruction from the CPU 40, the data stored in the buffer RAM 34 is taken out via the buffer manager 37, an error correction code is added, etc., and the recording data on the optical disk 15 is created. . Then, in the encoder 25,
Based on an instruction from the CPU 40, the reproduction signal processing circuit 2
The recording data is output to the laser control circuit 24 in synchronization with the synchronization signal from the recording medium 8.

The laser control circuit 24 controls the output of the semiconductor laser of the optical pickup device 23 based on the recording data from the encoder 25.

The interface 38 is a bidirectional communication interface with a host (for example, a personal computer) as an external device, and is an ATAPI (AT
Attachment Packet Interface) and SCSI (Small)
Computer System Interface) and other standard interfaces.

The ROM 39 stores a program including an information recording program, which will be described later, written in a code readable by the CPU 40.

The CPU 40 controls the operation of each of the above parts in accordance with the program stored in the ROM 39, and temporarily stores data necessary for the control in the RAM 4 or the like.
Save to 1. When the optical disk device 20 is powered on, the above program stored in the ROM 39 is loaded into the main memory (not shown) of the CPU 40.

Next, the multi-session format of DVD + R will be described. In DVD + R, the existence of a maximum of 191 sessions is allowed in the disc. Then, a lead-in indicating the start of the session is recorded in the first session, that is, the innermost side of the innermost session. Note that an intro indicating the start of the session is recorded instead of the lead-in on the inner circumference side of the second and subsequent sessions. A closure indicating the end of the session is recorded on the outer peripheral side of the session. Note that the lead-out is recorded on the outer peripheral side of the final session, not the closure.

A maximum of 16 fragments can exist as a data area in which data from the host is recorded in one session. Therefore, in DVD + R, a maximum of 3056 (= 191 × 16) fragments are present. One fragment has a size that is an integral multiple of 16 sectors.

The lead-in and intro include a session disc including information about fragments (hereinafter, abbreviated as “fragment information”) and information about sessions (hereinafter abbreviated as “session information”).
Control Block (Session Disc Control Bloc
k, hereinafter referred to as "SDCB") is recorded. This SDCB includes, as fragment information, a fragment number of a fragment included in the session and address information (start address, end address) of the fragment. As session information, the session number of the session and the inner circumference side of the session. The session number and address information (start address, end address) and the like of all the sessions existing in are included. The area in which the SDCB is recorded is the inner disc identification
It is called a zone (Inner Disc Identification Zone),
Inner Session Identification Zone (Inner Session Identificati)
on Zone). In addition, the fragment whose recording is completed is the complete fragment (Comple
te Fragment) is also called. Furthermore, if a fragment recorded without reservation is unrecorded, or if it is in the process of being recorded and is not completed, the fragment is an incomplete fragment.
Also called.

The closure is a Buffer Zone C consisting of 768 sectors and an Outer Session Identification Zone consisting of 256 sectors.
It consists of and. The buffer zone C is a spare area in which temporary data (“00H”) is written. The same content as the inner session identification zone in the intro of the same session is recorded in the outer session identification zone. Note that the closure is written when closing the session. Then, the closed session is also called a closed session, and thereafter, data cannot be recorded in the session.

The lead-out consists of a buffer zone 3 consisting of 768 sectors and an outer disc identification zone consisting of 256 sectors.
Guard Zone 2 consisting of at least 4096 sectors
(Guard Zone 2). Data (“00H”) is written in the buffer zone 3. The same content as the inner session identification zone in the intro of the final session is recorded in the outer disc identification zone. The guard zone 2 is a test area (OuterDrive Area) further provided on the outer peripheral side of the guard zone 2.
This is an area for clarifying the distinction between and to protect recorded data, and data (“00H”) is written. In addition,
The lead-out is written when the disc is closed, and data cannot be additionally written on the closed disc.

Next, by using the optical disk device 20 configured as described above, file data is recorded in one session on the optical disk 15 as an example, and thereafter,
The processing operation when the file system information is recorded in the first fragment in the session will be described.

Therefore, first, a fragment reservation process is performed in order to secure an area for recording the file system information in advance. The flow charts of FIGS. 2 and 3 are as follows when a fragment reservation request command is received from the host.
It corresponds to a series of processing algorithms executed by the CPU 40. The reservation request command includes the number of sectors to be reserved (hereinafter referred to as "reserved sector number"). Although not specified in the standard, in the present embodiment, the reservation request command includes run-in additional information that indicates whether or not to add a run-in.

Here, as an example, N (1 ≦ N ≦ 189) sessions already exist in the recording area of the optical disc 15, and each session is a closed session in which data recording is completed. And And
The innermost side is session 1, the outermost side is session N
And Furthermore, it is assumed that the SDCB of session N is read when the optical disc 15 is inserted into a predetermined position of the optical disc device 20 and already copied to the RAM 41.

When the CPU 40 receives the reservation request command, first, in order to perform preprocessing, in the information recording program loaded in the main memory, the program corresponding to the processing algorithm shown in the flowchart of FIG. The program counter is set to the top address of the program area in which the "processing program" is described. As a result, after that, step 30
From 1 to step 305, processing is performed according to the preprocessing program.

In step 301 of FIG. 2, it is determined whether or not a fragment on the inner peripheral side of the reserved area (hereinafter, referred to as "immediately preceding fragment" for convenience) is a reserved fragment. Here, since the immediately preceding fragment is included in the close session, the determination in step 301 is denied and the preprocessing is ended.

On the other hand, when the immediately preceding fragment is the reserved fragment in step 301, the determination in step 301 is affirmative, and the process proceeds to step 303.

In step 303, it is determined whether or not the run-in is written on the outer peripheral side of the immediately preceding fragment. If the 16 sectors following the last address of the immediately preceding fragment are in an unrecorded state, the determination at step 303 is denied and the process proceeds to step 305.

In step 305, the run-in is written after the last address of the immediately preceding fragment. The run-in is composed of 16 sectors, and the data is all "00H". Then, the preprocessing is ended.

On the other hand, in step 303, when the 16 sectors following the last address of the immediately preceding fragment are not unrecorded, the determination in step 303 is affirmed and the preprocessing is ended.

When the preprocessing is completed, the CPU 40, in the information recording program loaded in the main memory in order to subsequently perform the reservation processing, executes a program corresponding to the processing algorithm shown in the flowchart of FIG. The program counter is set to the top address of the program area in which the "processing program" is described. As a result, thereafter, steps 401 to
Until step 415, processing is performed according to the reservation processing program.

In step 401 of FIG. 3, the reservation request command from the host is analyzed and the number of reserved sectors (here, k
Get sector). Then, the next session (N + 1) is opened on the outer peripheral side of the session N.

At step 403, the final address of the session N is extracted from the SDCB of the session N stored in the RAM 41, and the start address of the reserved area is obtained. Here, since the reserved area is a fragment at the beginning of a new session, that is, session (N + 1), the session (N +
The address following the intro portion of 1), that is, the address obtained by adding 1024 sectors, becomes the head address of the reserved area.

In step 405, the final address of the reserved area is calculated from the start address of the reserved area and the number of reserved sectors k.

In step 407, the fragment number of the last fragment included in session N is read from SDCB of session N stored in RAM 41, and the fragment number is incremented (+1) to become the fragment number of the reserved area. .

In step 409, the session (N +
In the intro of 1), the SDCB including the start address, end address and fragment number of the reserved area is recorded.
The SDCB of session (N + 1) is also copied to the RAM 41.

In step 411, the run-in additional information is extracted from the reservation request command, and it is determined whether or not there is a run-in additional request. Here, if there is a run-in addition request, the determination in step 411 is affirmative and the process proceeds to step 413. In the present embodiment, the run-in additional information is included in the reservation request command, but the present invention is not limited to this and may be another command. In short, it suffices that the CPU 40 can acquire the additional information of the run-in for the reserved area.

In step 413, the run-in is recorded from the address following the last address of the reserved area. And
An incomplete fragment is automatically generated after the run-in.

At step 415, the reservation OK is notified to the host. Then, the fragment reservation process ends.

On the other hand, if there is no run-in addition request in step 411, the determination in step 411 is denied and the process proceeds to step 415. That is, the run-in is not written.

Next, the process of recording the file data from the host in the incomplete fragment will be described with reference to the flowcharts of FIGS. 4 and 5. Usually, the host sends a request command for information about fragments to the optical disk device 20 in order to obtain the write start address before sending the write request command to the optical disk device 20. The flowchart of FIG. 4 corresponds to a series of processing algorithms executed by the CPU 40 when receiving a request command for fragment-related information from the host. In this embodiment, the fragment number of the incomplete fragment is M, and this is called fragment M.

When the CPU 40 receives the fragment information request command, the program loaded in the main memory corresponds to the processing algorithm shown in the flowchart of FIG. 4 (hereinafter referred to as "fragment information acquisition processing program"). Set the program counter at the start address of the program area where is described. As a result, thereafter, the processes from step 501 to step 509 are performed according to the fragment information acquisition processing program.

In step 501 of FIG. 4, the start address and the final address of the fragment immediately before the fragment M are extracted based on the SDCB of the session (N + 1) stored in the RAM 41.

At step 503, it is determined whether or not the immediately preceding fragment is a reserved fragment. That is,
It is checked whether or not data is recorded in the entire area from the start address to the last address of the immediately preceding fragment. As a result, if there is an unrecorded area in the immediately preceding fragment, the immediately preceding fragment is a reserved fragment. to decide. Here, since the immediately preceding fragment is a reserved fragment, the determination in step 503 is affirmative, and the process proceeds to step 505.

In step 505, the run-in portion, that is, the address for 16 sectors is added to the final address of the immediately preceding fragment, and the subsequent address is added to the fragment M.
The start address of Then, when it is confirmed that the data is not written to the address, the address is set as the writable address (Next Writable Address, hereinafter referred to as “NWA”).

On the other hand, in step 503, when there is no unrecorded area in the immediately preceding fragment, the immediately preceding fragment is determined not to be the reserved fragment, the determination in step 503 is denied, and the process proceeds to step 507.

At step 507, the address following the last address of the immediately preceding fragment is set as the start address of the fragment M. Then, if it is confirmed that the data is not written in that address, the address is NWA
And

In step 509, the information regarding the fragment M including NWA is transmitted to the host. Then, the process when the request command for the information regarding the fragment is received is ended. As a result, the host can know the data write start address.

The host sends a write request command having NWA as a write start address to the optical disk device 20. The flowchart of FIG. 5 corresponds to a series of processing algorithms executed by the CPU 40 when a write request command is received from the host. In addition,
The write request command includes a write start address and write data.

When the CPU 40 receives the write request command, the information recording program loaded in the main memory describes a program corresponding to the processing algorithm shown in the flowchart of FIG. 5 (hereinafter referred to as "writing processing program"). Set the program counter at the start address of the program area. As a result, thereafter, steps 601 to 6
Up to 09, processing will be performed according to the write processing program.

In step 601 of FIG. 5, the write start address and write data are extracted from the write request command. Then, the start address of the fragment M is compared with the write start address, and it is determined whether or not the write start position is the head of the fragment M. Here, since the write start address is the same as the start address of the fragment M, the determination at step 601 is affirmative, and the process proceeds to step 603.

At step 603, it is determined whether or not the immediately preceding fragment is a reserved fragment. here,
Since the unrecorded area exists in the immediately preceding fragment, the determination in step 603 is affirmative, and the process proceeds to step 605.

At step 605, it is judged whether or not the run-in is written between the immediately preceding fragment and the fragment M. When 16 sectors between the last address of the immediately preceding fragment and the start address of the fragment M are unrecorded, the determination at step 605 is denied and the routine proceeds to step 607.

At step 607, the run-in is written after the last address of the immediately preceding fragment.

On the other hand, when the start address of the fragment M is not equal to the write start address in step 601, the determination in step 601 is denied and the process proceeds to step 609. If the immediately preceding fragment is not the reserved fragment in step 603, the determination in step 603 is denied and step 609.
Move to. Further, in step 605, when 16 sectors between the immediately preceding fragment and the fragment M are not unrecorded, the determination in step 605 is denied and the process proceeds to step 609.

At step 609, write data is recorded from the designated write start address.

Here, the processing operation at the time of recording in the optical disk device 20 will be briefly described. When the CPU 40 receives the write request command from the host, it outputs a control signal for controlling the rotation of the spindle motor 22 to the motor driver 27 based on the recording speed, and at the same time, performs a reproduction signal processing to the effect that the write request command is received from the host. Notify the circuit 28. Reproduction signal processing circuit 28
Then, when the rotation of the optical disk 15 reaches a predetermined linear velocity, the ADIP information and the servo signal are acquired based on the output signal from the optical pickup device 23. And AD
The IP information is output to the CPU 40, and the servo signal is output to the servo controller 33. Servo controller 3
In 3, the focusing actuator and the tracking actuator of the optical pickup device 23 are driven via the motor driver 27 based on the servo signal from the reproduction signal processing circuit 28, and the focus deviation and the track deviation are corrected. In the CPU 40, write data from the host is buffered via the buffer manager 37.
The buffer manager 37 while accumulating in the AM 34
When the notification that the amount of data accumulated in the buffer RAM 34 exceeds the predetermined value is received from the CPU, the encoder 25 is instructed to create the recording data. Then, in the CPU 40, based on the ADIP information from the reproduction signal processing circuit 28, a signal for instructing the seek operation of the optical pickup device 23 so that the optical pickup device 23 is located at the designated writing start point is sent to the motor driver 27. Output.
When the CPU 40 determines that the position of the optical pickup device 23 is the writing start point based on the ADIP information, it notifies the encoder 25. And the encoder 25
Then, the recording data is recorded on the optical disk 15 via the laser control circuit 24 and the optical pickup device 23. Until the recording process is completed, the reproduction signal processing circuit 28 detects the servo signal based on the output signal from the optical pickup device 23, and corrects the focus deviation and the track deviation through the servo controller 33 and the motor driver 27 as needed. To do. When the recording of the write data from the host ends, the process when the write request command is received ends.

When the write start address of the fragment M is known, the host sends the write request command without sending the request command for the information regarding the fragment M.

When the recording of the file data is completed, the host sends a close request command for the fragment M to close the fragment M.
Send to.

Upon receipt of the fragment M close request command from the host, the CPU 40 sends the fragment M fragment information to the SDC of the session (N + 1).
Add to B and update SDCB for session (N + 1). Then, the updated SDCB is updated to the session (N
Record in the intro of +1). As a result, the fragment M becomes a complete fragment. In addition,
S of session (N + 1) stored in RAM 41
DCB is also updated.

Next, the processing operation for recording the file system information from the host in the reserved fragment will be described. Prior to transmitting the write request command to the optical disc device 20, the host transmits a request command for information regarding the reserved fragment to the optical disc device 20 in order to obtain the write start address. In this embodiment, the fragment number of the reserved fragment is (M-1), so this is the fragment (M-1).
Shall be called.

When the CPU 40 receives the command requesting the information regarding the fragment (M-1) from the host, the session (N + 1) stored in the RAM 41 is received.
Information such as the start address and the end address of the fragment (M-1) is obtained from the SDCB of the above, and is notified to the host together with the NWA. Here, the fragment (M-
Since no data is recorded in 1), the start address of the fragment (M-1) and NWA are the same.

Subsequently, in the host, the fragment (M-
The write request command having the NWA of 1) as the write start address is transmitted to the optical disk device 20.

The CPU 40 extracts the write start address and write data from the write request command,
The data is recorded on the optical disk 15 as described above.

In the host, the fragment (M-
When the write start address in 1) is known, the write request command is transmitted without transmitting the request command for the information regarding the fragment (M-1).

When the host system completes recording the file system information, it sends a fragment (M-1) close request command to the optical disk device 20 in order to close the fragment (M-1).

When the CPU 40 receives a fragment (M-1) close request command from the host, it checks whether or not an unrecorded area exists in the fragment (M-1). , Temporary data (“00H”) is written in the unrecorded area. In addition,
Since the fragment information of the fragment (M-1) has already been recorded in SDCB at the time of reservation, SD is used here.
CB is not updated. As a result, the fragment (M-1) becomes a complete fragment.

Next, the processing operation for reproducing the file data recorded on the optical disk 15 as described above will be briefly described.

When the CPU 40 receives from the host a command requesting information regarding the first fragment (here, fragment (M-1)) of the session (N + 1), it stores the session (N +) stored in the RAM 41.
Based on the SDCB of 1), the address information of the fragment (M-1) is obtained and notified to the host. As a result, the host can know the start address and the number of sectors of the fragment in which the file system information is recorded.

When the CPU 40 receives a read request command with the start address of the fragment (M-1) as the read start address from the host, the read start address and the number of read sectors (hereinafter referred to as the "specified sector number") are read from the read request command. ) Is extracted. Then, the data for the designated number of sectors is reproduced from the designated read start address and transmitted to the host.

Here, the processing operation during reproduction in the optical disk device 20 will be briefly described. When the CPU 40 receives a read request command from the host, it outputs a control signal for controlling the rotation of the spindle motor 22 to the motor driver 27 based on the reproduction speed, and a reproduction signal processing circuit indicating that the read request is received from the host. Notify 28. When the rotation of the optical disk 15 reaches a predetermined linear velocity, the reproduction signal processing circuit 28 acquires ADIP information and servo signals based on the output signal from the optical pickup device 23. Then, the ADIP information is output to the CPU 40, and the servo signal is output to the servo controller 33. The servo controller 33 drives the focusing actuator and the tracking actuator of the optical pickup device 23 via the motor driver 27 based on the servo signal from the reproduction signal processing circuit 28, and corrects the focus deviation and the track deviation. In the CPU 40, the motor driver 2 outputs a signal instructing the seek operation so that the optical pickup device 23 is positioned at the reading start point designated based on the ADIP information.
Output to 7. When the CPU 40 determines that the position of the optical pickup device 23 is the reading start point based on the ADIP information, it notifies the reproduction signal processing circuit 28.
Then, the reproduction signal processing circuit 28 detects the RF signal based on the output signal of the optical pickup device 23, performs error correction processing and the like, and then stores the RF signal in the buffer RAM 34.
The buffer manager 37, when the reproduction data accumulated in the buffer RAM 34 is prepared as sector data,
Send to host via interface 38. The reproduction signal processing circuit 28 continues until the reproduction processing is completed.
Detects a servo signal based on the output signal from the optical pickup device 23, and corrects focus deviation and track deviation through the servo controller 33 and the motor driver 27 as needed.

Thus, the host can know the address and the number of sectors at which the file to be reproduced is recorded, based on the file system information. Then, a read request command for reading the file data is transmitted from the host to the optical disk device 20.

Upon receiving the read request command from the host, the CPU 40 extracts the read start address and the designated sector number from the read request command. Then, the CPU 40 reads the specified number of sectors of data from the read start address specified as described above, and transmits the data to the host.

When the file data is divided, the host sends a plurality of read request commands.

Next, the processing operation for closing the session (N + 1) will be described with reference to the flowchart of FIG. The flowchart of FIG. 6 corresponds to a series of processing algorithms executed by the CPU 40 when the close request command of the session (N + 1) is received from the host. Note that here, the fragment of fragment number Q (> M) (hereinafter “fragment Q”)
Is the final fragment.

When the CPU 40 receives the close request command for the session (N + 1), in the information recording program loaded in the main memory, the program corresponding to the processing algorithm shown in the flowchart of FIG. "
The program counter is set to the start address of the program area in which is written. This allows
Thereafter, steps 701 to 707 are performed according to the session close processing program.

In step 701 of FIG. 6, the final address of the final fragment (here, fragment Q) of the last session (here, session (N + 1)) is obtained. Here, the final address of the fragment Q is obtained by referring to the SDCB of the session (N + 1) stored in the RAM 41.

At step 703, it is judged whether or not the run-in is written on the outer peripheral side of the fragment Q.
Here, it is checked whether 16 sectors following the final address of the fragment Q have been recorded. And
If 16 sectors following the final address of the fragment Q have been recorded, it is determined that the run-in has been written, and the determination in step 703 is affirmative, and step 70
Go to 5.

At step 705, the closure of which the run-in is a part is written. That is, as shown in FIG. 7A, temporary data (“00H”) is written in the 752 (= 768−16) sector following the run-in on the outer peripheral side of the fragment Q, and consists of 768 sectors including the run-in. Let the area be buffer zone C. Further, the same contents as the inner session identification zone in the intro of the session (N + 1) are written in the 256 sectors following the buffer zone C to form the outer session identification zone. Then, the closing process of the session (N + 1) ends.

On the other hand, if the 16 sectors following the final address of the fragment Q are unrecorded in step 703 of FIG. 6, it is determined that the run-in has not been written, and the determination in step 703 is denied, and step 70
Move to 7.

At step 707, the closure is written following the fragment Q. That is, as shown in FIG. 7B, 7 following the final address of fragment Q
Temporary data (“00H”) is written in 68 sectors to form buffer zone C. In addition, buffer zone C
The same contents as the inner session identification zone in the intro of the session P are written in the 256 sectors subsequent to, and are set as the outer session identification zone. Then, the closing process of the session (N + 1) ends.

As described above, the session (N + 1) in which the closure is written becomes a closed session, and data cannot be recorded thereafter.

Next, the processing operation when the optical disc 15 is closed will be described with reference to the flowchart of FIG. The flowchart of FIG. 8 corresponds to a series of processing algorithms executed by the CPU 40 when a disk close request command is received from the host. Here, it is assumed that the session (N + 2) is an open session and the fragment with the fragment number T (> Q) (hereinafter referred to as “fragment T”) is the final fragment. And the session (N +
It is assumed that SDCB of 2) has been copied to the RAM 41.

When the CPU 40 receives the disk close request command, the program corresponding to the processing algorithm shown in the flowchart of FIG. 8 in the information recording program loaded in the main memory (hereinafter referred to as "disk close processing program"). Set the program counter at the start address of the program area where is described. As a result, thereafter, processing is performed according to the disc close processing program from step 801 to step 807.

In step 801 of FIG. 8, the final address of the final fragment (here, fragment T) of the final session (here, session (N + 2)) is obtained. Here, the final address of the fragment T is obtained by referring to the SDCB of the session (N + 2) stored in the RAM 41.

At step 803, it is judged whether or not the run-in is written on the outer peripheral side of the fragment T.
Here, it is checked whether 16 sectors following the final address of the fragment T have been recorded. And
If the 16 sectors following the final address of the fragment T have been recorded, it is determined that the run-in has been written, the determination in step 803 is affirmative, and step 80
Go to 5.

In step 805, the run-out of which the run-in behind the fragment T is a part is written. That is, as shown in FIG. 9A, the data (“0” is stored in the 752 (= 768-16) sector following the run-in.
0H ”) is written and the area of 768 sectors including the run-in is set as the buffer zone 3. And the buffer
Session (N + 2) in 256 sectors following zone 3
Write the same contents as the inner session identification zone in the intro of, to make it the outer disc identification zone. Further, data (“00H”) is written in at least 4096 sectors following the outer disc identification zone to form a guard zone 2. Then, the process of closing the optical disc 15 is completed.

On the other hand, when the 16 sectors following the final address of the fragment T are unrecorded in step 803 of FIG. 8, it is determined that the run-in has not been written, and the determination in step 803 is denied, and step 80
Move to 7.

In step 807, the runout is written following the fragment T. That is, as shown in FIG. 9B, 7 following the final address of the fragment T
Data (“00H”) is written in 68 sectors to form buffer zone 3. Then, in the 256 sectors following the buffer zone 3, the same contents as the inner session identification zone in the intro of the session (N + 2) are written to form the outer disc identification zone. Further, data (“00H”) is written in at least 4096 sectors following the outer disc identification zone to form a guard zone 2.
Then, the process of closing the optical disc 15 is completed.

When the lead-out is written as described above, the data cannot be additionally written on the optical disc 15.

As is apparent from the above description, in the optical disk device 20 according to the present embodiment, the CPU 40 causes the communication control means, the termination information recording means, the area reservation means, the addition judgment means, the dummy data addition means, and the first data storage means. The dummy data recording means and the second dummy data recording means are configured.

Further, the optical disk device 2 according to the present embodiment
At 0, the processing algorithm shown in the flowcharts of FIGS. 2, 3, 5, 6, and 8 among the processing algorithms executed by the CPU 40 is stored in the ROM 39 as an information recording program.

However, it goes without saying that the present invention is not limited to this. That is, the above embodiment is merely an example, and at least a part of each component realized by the processing according to the program by the CPU 40 may be configured by hardware.
Alternatively, all the constituent parts may be configured by hardware.

As described above, according to the information recording method of the present embodiment, when a closure or lead-out is recorded in the recording area, if a run-in exists on the outer peripheral side of the final fragment, the run-in is deleted. It is part of the closure or lead-out, and the run-in is followed by the rest of the closure or lead-out.
That is, even when the run-in exists on the outer peripheral side of the final fragment, the run-in exists between the final fragment and the closure or the lead-out by making the run-in part of the closure or the read-out. It becomes a form that does not. Therefore, the meaningless run-in can be prevented from existing between the final fragment and the closure or the lead-out, and as a result, the unnecessary area in the recording area of the information recording medium can be reduced and the data recordable area can be increased. It becomes possible.

When the fragment is reserved, it is further determined whether or not the run-in is added to the reserved fragment based on the additional information of the run-in. As a result of the judgment, when the run-in is added, the reserved fragment is added. The run-in is recorded on the outer peripheral side of. That is, the run-in is added only when the run-in addition request is input. Therefore, when the reserved fragment is scheduled to be the final fragment, meaningless run-in can be prevented from being added to the reserved fragment, and as a result, an unnecessary area in the recording area of the information recording medium can be prevented. Can be reduced and the data recordable area can be increased.

Furthermore, when there is a data write request, if the fragment immediately before the fragment to which the data is written is a previously reserved fragment and there is no run-in on the outer peripheral side of the immediately preceding fragment,
Prior to data writing, run-in is recorded on the outer peripheral side of the immediately preceding fragment. Therefore, even when the run-in is not added when the immediately preceding fragment was previously reserved, the run-in can be surely present between the immediately preceding fragment and the fragment to which the data is written this time.

When a fragment reservation request is made, the fragment immediately before the reserved fragment is a previously reserved fragment, and the run-in does not exist on the outer peripheral side of the immediately preceding fragment, prior to the fragment reservation. The run-in is recorded on the outer peripheral side of the immediately preceding fragment. Therefore, even if the run-in is not added when the immediately preceding fragment was previously reserved, the run-in can be surely present between the immediately preceding fragment and the currently reserved fragment.

Further, according to the optical disk apparatus of the present embodiment, when the session or disk close request command is input from the host, the CPU 40 causes a run-in on the outer peripheral side of the final fragment.
The run-in is made part of the closure or lead-out, and the run-in is followed by the rest of the closure or lead-out. That is, even when the run-in exists on the outer peripheral side of the final fragment, the run-in exists between the final fragment and the closure or the lead-out by making the run-in part of the closure or the read-out. It becomes a form that does not.
Therefore, the meaningless run-in can be prevented from existing between the final fragment and the closure or the lead-out, and as a result, the unnecessary area in the recording area of the information recording medium can be reduced and the data recordable area can be increased. It becomes possible.

Furthermore, when the fragment reservation request command is input from the host, the CPU 40 reserves the fragment, and when the additional information of the run-in from the host is input, whether or not the run-in is added to the reserved fragment by the CPU 40. Is determined. Then, when the result of adding the run-in is obtained, the CPU 40 records the run-in on the outer peripheral side of the reserved fragment.
That is, the run-in is added only when the run-in addition request is input from the host. Therefore, when the host preliminarily schedules the reserved fragment as the final fragment, it is possible to prevent meaningless run-in from being added to the reserved fragment, and as a result, unnecessary in the recording area of the information recording medium. It is possible to reduce the specific area and increase the data recordable area.

When a data write request command is received from the host, if the fragment immediately before the fragment in which the data is recorded is the previously reserved fragment and there is no run-in on the outer peripheral side of the immediately preceding fragment. , CP before writing data
The run-in is recorded on the outer peripheral side of the immediately preceding fragment by U40. Therefore, even when the run-in is not added when the immediately preceding fragment was previously reserved, the run-in can be surely present on the outer peripheral side of the immediately preceding fragment.

Furthermore, when the fragment reservation request command from the host is received, if the immediately preceding fragment of the reserved fragment is the previously reserved fragment and there is no run-in on the outer peripheral side of the immediately preceding fragment, CP before booking a fragment
The run-in is recorded on the outer peripheral side of the immediately preceding fragment by U40. Therefore, even when the run-in is not added when the immediately preceding fragment was previously reserved, the run-in can be surely present on the outer peripheral side of the immediately preceding fragment.

In the above embodiment, the case where the file system information is written in the first fragment of the session has been described, but the present invention is not limited to this, and may be written in the last fragment of the session, for example. . Also, the file system information and the file data may be in different sessions. In short, it suffices if the file system information and the file data are correctly associated.

Further, in the above embodiment, the fragment is reserved for the file system information before writing the file data. However, if the reserved fragment already exists, the reservation process is not necessarily performed. good.

Further, when it becomes clear that the run-in does not exist on the outer peripheral side of the final fragment by the processing of step 411 in FIG. 3, in the session closing processing, steps 701 to 705 in FIG.
It is also possible to omit the process of step 7 and perform only the process of step 707. Similarly, also in the disc closing process, the processes of steps 801 to 805 in FIG. 8 may be omitted and only the process of step 807 may be performed.

When the processing shown in FIGS. 6 and 8 is performed, the determination in step 411 in FIG. 3 may be omitted and the processing in step 413 may be performed without fail. In this case, the processing of FIG. 2 and the processing of steps 601 to 607 in FIG. 5 can be omitted. That is, even if the run-in is added to all of the reserved fragments, the run-in can be a part of the closure or the lead-out when the session or the disc is closed.

Furthermore, the processing of steps 411 and 413 in FIG. 3 may be omitted. That is, even if the run-in is not added at the time when the fragment is reserved, as shown in FIGS. 2 and 5, when the next fragment is reserved or when data is recorded in the next fragment, the previous reservation is performed. This is because the run-in is recorded on the outer peripheral side of the generated fragment. In this case, since it is clear that there is no run-in on the outer peripheral side of the final fragment, in the session closing process, the processes of steps 701 to 705 in FIG. 6 are omitted, and only the process of step 707 is performed. Is also good. Similarly, also in the disc closing process, the processes of steps 801 to 805 in FIG. 8 may be omitted and only the process of step 807 may be performed.

Although the information recording program is recorded in the ROM 39 in the optical disk device of the above embodiment, it may be recorded in another information recording medium (CD-ROM, magneto-optical disk, MO, etc.). good. For example, the information recording program recorded in the MO on the host side can be read using the MO drive and transferred to the main memory of the CPU 40.

In the above embodiment, the optical disc 15 is used.
However, the present invention is not limited to this, and the recording area is divided into a plurality of data areas, data can be recorded in each of the divided data areas, and information can be reserved for the data area. Any recording medium may be used.

Further, the optical disk device 20 according to the above-described embodiment may be a so-called built-in type which is arranged in the same housing as the host, or a so-called external type which is arranged in a housing different from the host. It may be attached type.

In the above embodiment, the case where the optical disk device is used as the information recording device has been described, but the present invention is not limited to this, and the recording area is divided into a plurality of data areas as the target medium for information recording, and the division is performed. Any information recording device may be used as long as it can use an information recording medium capable of recording data and reserving an area for each of the created data areas. Of course, an information recording / reproducing apparatus capable of both reproduction and recording may be used.

[0151]

As described above, according to the information recording method of the present invention, it is possible to reduce the unnecessary area in the recording area of the information recording medium and increase the data recordable area. There is.

Further, according to the information recording apparatus of the present invention, it is possible to reduce the unnecessary area in the recording area of the information recording medium and increase the data recordable area.

According to the information recording program of the present invention, which is executed by the control computer of the information recording apparatus, unnecessary areas in the recording area of the information recording medium are reduced and data recordable areas are increased. The effect is that it can be done.

Further, according to the recording medium of the present invention, it is possible to reduce the unnecessary area in the recording area of the information recording medium and increase the data recordable area by causing the computer to execute. There is.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an optical disc device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating pre-processing of fragment reservation according to an embodiment of the present invention.

FIG. 3 is a flowchart illustrating a fragment reservation process according to an embodiment of the present invention.

FIG. 4 is a flowchart illustrating a fragment information acquisition process according to an embodiment of the present invention.

FIG. 5 is a flowchart illustrating a data write process according to an exemplary embodiment of the present invention.

FIG. 6 is a flowchart illustrating a session closing process according to an embodiment of the present invention.

FIG. 7A and FIG. 7B are views for explaining session closing processing.

FIG. 8 is a flowchart illustrating a disk closing process according to an embodiment of the present invention.

FIG. 9A and FIG. 9B are diagrams for explaining the disc closing process.

[Explanation of symbols]

15 ... Optical disc (information recording medium), 20 ... Optical disc device (information recording device), 40 ... CPU (communication control means,
End information recording means, area reservation means, addition determination means, dummy data addition means, first dummy data recording means, second
Dummy data recording means).

Claims (25)

[Claims] 1. An information recording using an information recording medium as a target medium for information recording, wherein a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. In the method, when recording the termination information in the recording area, a dummy data area in which dummy data is recorded on the outer peripheral side of the outermost data area among the data areas included in the recording area is If present, the dummy data is made a part of the termination information, and the rest of the termination information is recorded following the dummy data area. 2. The information recording method according to claim 1, wherein the dummy data is a run-in. 3. The recording area includes at least one session including a plurality of data areas, and the termination information is closing information of the session recorded when the session is closed. The information recording method described in 1 or 2. 4. The information recording medium is an information recording medium compliant with the DVD + R standard, and the closing information of the session is a closure.
Information recording method described in. 5. The information recording method according to claim 1, wherein the termination information is non-recordable information that is recorded when data is not additionally recordable in the recording area. 6. The information recording method according to claim 5, wherein the information recording medium is an information recording medium compliant with the DVD + R standard, and the non-recordable information is a lead-out. 7. An information recording using an information recording medium as a target medium for information recording, wherein a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. A first step of reserving a data area in response to an external data area reservation request; and the first step based on the additional information in response to external dummy data additional information input It is determined whether to add dummy data to the data area reserved in the process, and as a result of the determination, when adding the dummy data, the dummy data is added to the outer peripheral side of the data region reserved in the first process. A second step of recording dummy data; 8. When there is a recording data recording request from the outside, the immediately preceding data area on the inner circumference side of the data area in which the recording data is recorded is a previously reserved data area, and When there is no dummy data area on the outer peripheral side of the immediately preceding data area, a third step of recording dummy data on the outer peripheral side of the immediately preceding data area is further included prior to recording of the recording data. The information recording method according to claim 7. 9. When a data area reservation request is issued from the outside, the immediately preceding data area on the inner peripheral side of the reserved data area is the previously reserved data area, and the immediately preceding data area is set. 8. If the dummy data area does not exist on the outer peripheral side of the data area, the method further comprises a fourth step of recording dummy data on the outer peripheral side of the immediately preceding data area prior to the reservation of the data area. The information recording method described in 8. 10. The information recording medium according to claim 7, wherein the information recording medium is an information recording medium compliant with the DVD + R standard, and the dummy data is a run-in. Method. 11. An information recording medium for recording information, comprising a spiral or concentric recording area divided into a plurality of data areas, and an information recording medium capable of recording data in each of the divided data areas. A recording device, which is included in the recording area by a communication control unit that controls communication with an external device; and a signal that requests recording of termination information from the external device that is input via the communication control unit If a dummy data area exists on the outer peripheral side of the outermost data area of the data areas, the dummy data is made a part of the termination information, and the dummy data area is followed by the remaining termination information. An information recording device comprising: a terminal information recording unit for recording 12. An area reservation means for reserving a data area in response to a signal from the external device requesting the reservation of the data area; and the area reservation means based on additional information of dummy data from the external device. Additional judgment means for judging whether or not to add dummy data to the reserved data area; and when dummy data is to be added as a result of judgment by the additional judgment means, the area is reserved by the area reservation means. 12. The information recording apparatus according to claim 11, further comprising: dummy data adding means for recording dummy data on the outer peripheral side of the data area. 13. The information recording apparatus according to claim 11, wherein the information recording medium is an information recording medium compliant with the DVD + R standard, and the termination information is a closure or a lead-out. 14. An information recording medium, as a target medium for information recording, comprising an information recording medium in which a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. An area reservation unit that reserves a data area in response to a signal from an external device that requests the reservation of the data area; and the area reservation unit based on additional information of dummy data from the external device. Additional judgment means for judging whether or not to add dummy data to the reserved data area; and when dummy data is to be added as a result of judgment by the additional judgment means, the area is reserved by the area reservation means. An information recording device comprising: dummy data adding means for recording dummy data on the outer peripheral side of the data area. 15. When a signal requesting recording of recording data is received from the external device, the immediately preceding data area on the inner circumference side of the data area in which the recording data is recorded is a previously reserved data area. And the dummy data area does not exist on the outer peripheral side of the immediately preceding data area, the first dummy data for recording dummy data on the outer peripheral side of the immediately preceding data area prior to recording of the recording data. The recording device further comprises a recording unit.
The information recording device as described in 2 or 14. 16. When a signal requesting reservation of a data area is received from the external device, the immediately previous data area on the inner circumference side of the reserved data area is a previously reserved data area, and When a dummy data area does not exist on the outer peripheral side of the immediately preceding data area, a second dummy data recording means for recording dummy data on the outer peripheral side of the immediately preceding data area is further provided prior to reservation of the data area. The information recording apparatus according to any one of claims 12, 14, and 15, characterized in that. 17. The information recording medium is an information recording medium compliant with the DVD + R standard, and the dummy data is a run-in.
The information recording device according to any one of 4, 15, and 16. 18. An information recording medium which is used as an information recording medium, wherein a spiral or concentric recording area is divided into a plurality of data areas, and data can be recorded in each of the divided data areas. An information recording program used in a recording device, comprising: a dummy data area on the outer peripheral side of the outermost data area among the data areas included in the recording area, in response to a request to record end information in the recording area. If the dummy data area exists as a result of the determination, the dummy data is made a part of the termination information, and the termination information follows the dummy data area. An information recording program that causes a control computer of the information recording apparatus to execute a procedure for recording the rest of the above. 19. The information recording program according to claim 18, wherein the dummy data is a run-in. 20. The information recording program according to claim 18, wherein the information recording medium is an information recording medium compliant with the DVD + R standard, and the termination information is a closure or a lead-out. 21. An information recording medium using a data recording medium capable of recording data in each of the divided data regions, wherein a spiral or concentric recording region is divided into a plurality of data regions as a target medium for information recording. An information recording program used in a recording device, the procedure of reserving a data area based on a reservation request for a data area; and whether dummy data is added to the reserved data area based on additional information of the dummy data. A procedure for determining whether or not; a procedure for recording dummy data on the outer peripheral side of the reserved data area when dummy data is added as a result of the determination; a control computer for the information recording apparatus An information recording program to be executed by. 22. A procedure for determining, based on a recording request for recording data, whether or not the immediately preceding data area on the inner circumference side of the data area in which the recording data is recorded is a previously reserved data area. A procedure for determining whether or not a dummy data area exists on the outer peripheral side of the immediately preceding data area; and, as a result of the two determinations, the immediately previous data area is a previously reserved data area, And a procedure for recording dummy data on the outer peripheral side of the immediately preceding data area when the dummy data area does not exist on the outer peripheral side;
22. The information recording program according to claim 21, further causing the control computer to execute. 23. A procedure for determining whether or not the immediately previous data area on the inner circumference side of the reserved data area is a previously reserved data area based on a data area reservation request; A procedure for determining whether or not a dummy data area exists on the outer peripheral side of the data area; and, as a result of the two determinations, the immediately preceding data area is a previously reserved data area and the outer peripheral side thereof. 23. The information according to claim 21 or 22, further comprising: a step of recording dummy data on the outer peripheral side of the immediately preceding data area when there is no dummy data area in the control computer. Recording program. 24. The information recording medium according to claim 21, wherein the information recording medium is an information recording medium compliant with the DVD + R standard, and the dummy data is a run-in. program. 25. A computer-readable recording medium in which the information recording program according to any one of claims 18 to 24 is recorded.