JP2003228919A - Information recording and reproducing device, method and program for controlling information recording and reproduction, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To read data accurately from the head position of a next fragment irrelevantly to whether a reserved fragment is present as to an information recording medium which does not require a sector for a link between sectors. <P>SOLUTION: Even when data are present in a RUN-IN recording corresponding area (Y at S1, S2), it is not known whether the data are RUN-IN accompanying fragment reservation or data of an original next fragment; and the final ECC block of the fragment right before it is originally an unrecorded area in the former case, so it is confirmed whether data are present at a final ECC block part (S4), but when not (N at S5), it can be decided that the RUN-IN recording corresponding area is a RUN-IN recording area (S6). The head position of the next fragment is right behind the RUN-IN area in this case, so that data can be read accurately from the head position of the next fragment. <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 / reproducing apparatus, an information recording / reproducing control method, an information recording / reproducing control program, and a storage medium for recording / reproducing 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 CD-R (Compact) as an information recording medium.
Disc-Recordable) and DVD + R (Digital Versat)
Optical discs such as ile Disc + Recordable) have come to the forefront, and along with the cost reduction, optical disc devices as information reproducing devices have become popular as one of the peripheral devices of PCs.

As a file system using a recordable information recording medium such as a CD-R or a DVD + R, a universal disc format UDF (Universal Disc F) is used.
ormat) There is a standard. UDF is a file system that is used on various devices and uses a recording format that takes advantage of the characteristics of each device. Especially CD-
Since the R and the DVD + R are write-once type in which data cannot be overwritten, a sequential UDF for sequentially recording data from the inner circumference of the disc is adopted.

In the sequential UDF, a CD-ROM
Most popular as a file system for ISO 9660
In order to maintain compatibility with the so-called system, it is general to reserve the first track in the session and incrementally add the data requested by the user to the second track. That is, a multi-track recording method is adopted in which data is recorded by dividing the session into tracks, which are a plurality of recording units.

In the above recording state of the sequential UDF, since there is an unrecorded area in the session, reproduction can be performed only by the information recording / reproducing apparatus, and reproduction by the information reproducing apparatus such as a CD-ROM drive or a DVD-ROM drive is not possible. However, it is not possible to record the file system information of the recorded data on the first track (records the file information to be compatible with ISO9660), and records the lead-in and the lead-out to close the CD-ROM drive or DVD- Reproduction with a ROM drive is possible.
Furthermore, in order to perform additional recording of data on a disc in which such a session is closed, CD-R or DVD +
In R and the like, a multi-session recording method is adopted.

In the CD-R, the maximum number of tracks is 99, which is a small upper limit. Therefore, regardless of the number of sessions, track information existing on the entire disc is recorded in the program memory area PMA (Program M).
It is recorded in an area called "emory Area", and it is possible to collectively manage all track information. Therefore, C
In the D-R, by storing the track information obtained from the PMA in the memory of the drive device, it is possible to immediately report the track information requested by the user.

On the other hand, in the DVD + R, up to 191 sessions can be recorded in the recording area, and up to 16 tracks (called “fragment” in the DVD + R) can be recorded in each session. . That is,
In DVD + R, a huge number of fragments of 3056 (= 191 × 16) can exist at the maximum. In DVD + R, the lead-in after the second session is called "intro", and the lead-out before the final session is called "closure". Information regarding the fragment in each session (fragment number, fragment start address, fragment end address, etc.) is stored in the session disc control block SDCB (Session Disc Control Block) recorded in the lead-in (or intro) of the session. It is recorded in a so-called management information area. The SDCB includes not only such fragment information belonging to the session, but also information on all sessions before the session (session number, session start address, session end address, etc.).

That is, for DVD discs such as DVD + R and DVD + RW, a disc control block DCB (disc control block) indicating the recording state of the disc.
ck) exists, and means for reporting DCB information to the user is prepared. In the case of DVD + R, as described above, information such as information about all sessions existing on the disc and information about all fragments existing in the session, such as SDBC, is used.
CB exists, and in the case of DVD + RW, a formatting disc control block FDCB (Formatting Disc Control) that has information such as a format state.
Block) exists. Since data can be overwritten on DVD + RW, when the format status changes, FDCB
However, since the DVD + R is a write-once disc that cannot be overwritten, the SDCB is updated every time a session or fragment is added and additionally recorded in a predetermined new SDCB area.

Even in the case of DVD + RW and DVD + R, the directory information of ISO9660 is tracked (fragmented) after the file is determined in accordance with a request from a higher-level device (for example, PC) that uses such an optical disk device. It is standardized that a predetermined area (fragment) is reserved for writing in, and a reserve function (reservation function) is provided so that the reserved fragment can be written later. Reserving a certain track (fragment) without writing it is called reserve.

In the case of a so-called CD-based recordable optical disc such as a CD-R, it is difficult to perform seamless recording between the old recording portion and the new recording portion for reasons such as accuracy. For the purpose of preventing the destruction of the data on both the front and rear tracks (or packets), the sector for linking is interposed between the sectors for recording. On the other hand, in the case of a so-called DVD-based recordable optical disc such as DVD + RW or DVD + R, for example, the old recording portion is used by using a high-frequency wobble that is meandering with a fineness of several tens of times (about 40 times) the CD accuracy. It is possible to perform high-precision recording between the new recording portion and the new recording portion, and the link sector is not required between the sectors. Therefore, in the case of DVD + RW or DVD + R, when a certain fragment is reserved as described above, the address immediately after the reserved fragment is used as the start address to write to the next fragment.

[0011]

However, when recording / reproducing information on / from this type of optical disc, if there is an unrecorded area, it is difficult to read the data in the area immediately after the unrecorded area. . This is because there is a problem such that synchronization cannot be achieved where the signal enters the area where there is a signal from the area where there is no signal (unrecorded area). That is, if the RF signal in the reproducing operation is interrupted, the focus servo and the tracking servo become unstable, and the boundary part of the presence or absence of the RF signal becomes unreadable.

In this respect, in the case of a rewritable optical disk such as a DVD + RW, dummy data is added to the head of the area reserved at the time of data writing to perform writing to eliminate an unrecorded area. Readout is possible.

However, in the case of a write-once optical disc device such as a DVD + R, rewriting cannot be performed, and therefore it is not possible to add dummy data to a reserved fragment for writing. As a result, when writing is performed to the fragment next to the reserved fragment, the reserved fragment is an unrecorded area, so that the first one of the fragments cannot be read correctly.

In consideration of such a point, according to the standard concerning DVD + R, when a certain fragment is reserved, one reserved ECC block (= 16 sectors) is provided between the reserved fragment and the next fragment, It is specified to write dummy data (this dummy data is called RUN-IN (run-in)) in this area.
That is, since the RUN-IN recording area in which the dummy data is recorded as the RUN-IN exists after the reserved fragment, the data of the next fragment located immediately after this RUN-IN recording area can be accurately read from the head portion. Is possible. In this case, the position immediately after the RUN-IN recording area is the start position (start address) of the next fragment.

By the way, the start position and the end position of the fragment are to be recorded on the DVD + R, and the position information of the reserved fragment is recorded on the DVD + R at the time of reservation. However, the normal position of a non-reserved fragment is recorded in the DVD + R after its final position is determined by the closing process. Therefore, in consideration of such a situation, if the DVD + R is ejected while the fragment is reserved (the next fragment remains open),
If data is present in the RUN-IN recording equivalent area when it is inserted, is it the RUN-IN recording area in which the dummy data is recorded as RUN-IN, or the data of the original next fragment? I don't know if it is. Since the start position of the next fragment changes depending on the presence / absence of the RUN-IN recording area, a problem occurs such that the host device cannot know where the start position of the next fragment is, for example.

According to the present invention, with respect to an information recording medium that does not require a sector for linking between sectors, data is accurately recorded from the head position of the next track (fragment) regardless of the presence of a reserved track (reserved fragment). An information recording / reproducing apparatus capable of reading, an information recording / reproducing control method,
An object is to provide an information recording / reproducing control program and a storage medium.

According to the present invention, the dummy data recording area (RUN) is
-IN recording area), it is possible to determine whether or not there is a reserved track (reserved fragment) in the next track (fragment) for an information recording medium that does not require a sector for linking between sectors. An object of the present invention is to provide an information recording / reproducing apparatus, an information recording / reproducing control method, an information recording / reproducing control program, and a storage medium that enable accurate data reading from the head position.

According to the present invention, the dummy data recording area (RUN
-IN recording area), there is no need to determine whether or not the sector for linking between sectors is unnecessary,
An information recording / reproducing apparatus capable of accurately reading data from the head position of the next track (fragment) regardless of the presence of a reserved track (reserved fragment),
An object is to provide an information recording / reproducing control method, an information recording / reproducing control program, and a storage medium.

The present invention relates to an information recording medium that does not require a RUN-IN recording area and does not need a sector for linking between sectors, regardless of the presence of a reserved track (reserved fragment). It is an object of the present invention to provide an information recording / reproducing apparatus, an information recording / reproducing control method, an information recording / reproducing control program, and a storage medium that enable accurate reading of data from the beginning position of a fragment).

[0020]

The invention according to claim 1 is
In an information recording / reproducing apparatus in which an information recording medium for which a sector for linking between sectors is unnecessary is used for information recording / reproducing, data is reproduced by reproducing a preset dummy data recording corresponding area immediately before each track on the information recording medium. Target area confirmation means for confirming whether or not is recorded, and immediately before area confirmation means for confirming whether or not data is recorded by reproducing the last block of the track immediately before the dummy data recording equivalent area, When it is confirmed by the target area confirming means that the data is recorded, and when it is confirmed by the immediately preceding area confirming means that the data is not recorded, the dummy data recording equivalent area is a dummy data recording area. Determination means for determining.

Therefore, even if there is data in the area corresponding to the dummy data recording, whether the data is the dummy data recording area in which the dummy data is recorded due to the track reservation,
Or, I do not know whether it is the data of the original next track, but in the case of dummy data accompanying the track reservation,
Since the last block of the track immediately before that is usually an unrecorded area, it is confirmed whether or not there is data in this last block portion. If not, the target dummy data recording area is the dummy data recording area. It can be determined to be a region. In this case, the start position of the next track is the position immediately after the dummy data recording area. As a result, with respect to an information recording medium that does not require a sector for linking between sectors, data can be accurately read from the head position of the next track regardless of the presence of a reserved track.

According to a second aspect of the present invention, in the information recording / reproducing apparatus according to the first aspect, the immediately preceding area confirming means records the data after the target area confirming means confirms that the data is recorded. Confirm whether it has been done.

Therefore, if it is confirmed that the data does not exist in the preset dummy data recording equivalent area immediately before the target track, it is determined that the area is not the dummy data recording area at that time, and the processing proceeds to the subsequent processing. can do.

According to a third aspect of the present invention, in the information recording / reproducing apparatus according to the first aspect, the target area confirmation means records the data after the immediately preceding area confirmation means confirms that the data is not recorded. Confirm whether it has been done.

Therefore, the data exists in the order of "the last block of the track immediately before the dummy data recording equivalent area" and "the preset dummy data recording equivalent area immediately before the track" in the order of access to the write-once type information recording medium. Whether or not the confirmation processing can be performed once can increase the confirmation processing speed.

According to a fourth aspect of the present invention, in the information recording / reproducing apparatus according to the first, second or third aspect, the track reservation processing means for accepting the reservation of the track and the dummy data upon the reservation acceptance by the track reservation processing means. An identifier recording unit that also records a predetermined identifier when recording, and a recognition unit that reproduces the dummy data recording equivalent area and recognizes the presence or absence of the identifier, and the determination unit is the When the presence of the identifier is recognized by the recognizing means, when the target area confirming means confirms that the data is recorded and the immediately preceding area confirming means confirms that the data is recorded. In addition, it is determined that the area corresponding to the dummy data recording is the dummy data recording area.

Therefore, when the dummy data is recorded when the reservation of the track is received, a predetermined identifier is also recorded, so that the last block of the track immediately before the dummy data recording corresponding area where the data normally does not exist due to the track reservation. Even after the data has been written in, it is possible to reliably determine whether or not the dummy data recording equivalent area is the dummy data recording area by recognizing the existence of the identifier.

According to a fifth aspect of the present invention, in an information recording / reproducing apparatus for information recording / reproducing an information recording medium which does not require a sector for linking between sectors, a track reservation processing means for accepting a track reservation, and When the dummy data is recorded in the preset dummy data recording area immediately before the track on the information recording medium in response to the reservation acceptance by the track reservation processing means, a predetermined identifier is also recorded at a position that can be read independently. Identifier recording means, recognizing means for reproducing the dummy data recording equivalent area to recognize the presence or absence of the identifier, and the dummy data recording equivalent area being a dummy when the presence of the identifier is recognized by the recognizing means. And a determining unit that determines that the area is a data recording area.

Therefore, when the dummy data is recorded together with the acceptance of the reservation of the track, a predetermined identifier is also recorded, and thereafter, the dummy data recording equivalent area is simply reproduced to recognize the presence or absence of the identifier. Thus, it is possible to directly determine whether or not the corresponding dummy data recording area is the dummy data recording area. At this time, since the identifiers are independently recorded at readable positions, the dummy data recording equivalent area is reproduced with track reservation even if the area immediately before the dummy data recording equivalent area is an unrecorded area. The RF signals are synchronized with each other and the identifier can be surely recognized, so that the determination process can be surely performed.
As a result, with respect to an information recording medium that does not require a sector for linking between sectors, data can be accurately read from the head position of the next track regardless of the presence of a reserved track.

According to a sixth aspect of the present invention, in the information recording / reproducing apparatus according to the fifth aspect, the identifier recording means has the identifier at the last sector position of the corresponding dummy data recording area as an independently readable position. To record.

Therefore, by recording the identifier at the last sector position of the corresponding dummy data recording corresponding area, RF is reproduced while the dummy data recording corresponding area is being reproduced.
The signals can be synchronized and the identifier can be surely recognized.

According to a seventh aspect of the present invention, in the information recording / reproducing apparatus according to the sixth aspect, the identifier recording means records the identifier in a data area in the final sector by a specific repeating pattern.

Therefore, as the identifier, data having a specific repeating pattern, such as repeating dummy data, can be used.

According to an eighth aspect of the present invention, in the information recording / reproducing apparatus according to the sixth aspect, the identifier recording means records information indicating the dummy data in the ID area in the last sector as the identifier. .

Therefore, when a data area is used as an identifier, it may not be possible to distinguish it from normal data.
By using the information indicating that the data is dummy data by using the D area, more reliable recognition is possible.

The invention according to claim 9 is the invention according to claims 1 to 8.
In the information recording / reproducing apparatus according to any one of the above, the information recording medium is an information recording medium conforming to the DVD + R standard, the track is a fragment, the dummy data is RUN-IN (run-in), The dummy data recording area is the RUN-IN recording area.

Therefore, it is possible to determine whether or not the dummy data recording equivalent area is the RUN-IN recording area under the situation where the information recording medium conforming to the DVD + R standard is to be recorded / reproduced. Data can be accurately read from the head position of the next fragment regardless of the presence of the reserved fragment.

According to a tenth aspect of the present invention, in an information recording / reproducing apparatus in which an information recording medium conforming to the DVD + R standard is used for information recording / reproducing, RUN- is provided between each fragment.
A dummy data recording means for recording dummy data as IN (run-in) is provided, and RUN-I is provided between each fragment.
The N recording areas were connected.

Therefore, RUN- is always used between each fragment.
Since it will be linked by the IN recording area and the RUN-IN recording area exists regardless of the presence or absence of the reserved fragment, the start address of the next fragment is always the last address + (RUN-IN recording area). Therefore, it is not necessary to determine whether or not it is the RUN-IN recording area, and the data can be accurately read from the head position of the next fragment.

According to an eleventh aspect of the present invention, management information relating to data recording is recorded in an SDCB (session disc control block) in accordance with the DVD + R standard.
Further, in an information recording / reproducing apparatus for which information recording / reproduction is performed, the management information is updated each time a predetermined data recording is completed and additionally recorded in a new SDCB, and a fragment reservation for accepting a fragment reservation is made. The processing means and the RUN immediately after the fragment reserved after the reservation acceptance processing by the fragment reservation processing means
Dummy data recording means for recording dummy data as RUN-IN (run-in) in the -IN recording area, and SDCD management information for the reserved fragment, together with a fragment number, a start address and an end address which are the fragment information, Management information recording means for recording the next fragment information including the start address.

Therefore, due to the fragment reservation, the RUN-IN is recorded in the RUN-IN recording area immediately after the fragment.
When the dummy data is recorded as (run-in), the fragment information of the reserved fragment is recorded in the SDCB for management information, and the start address of the fragment information is recorded as the next fragment information. The address can be recognized directly. Therefore, it is not necessary to judge whether or not it is the RUN-IN recording area, and with respect to the information recording medium compliant with the DVD + R standard, the data can be accurately read from the head position of the next fragment regardless of the presence of the reserved fragment. Is possible.

According to a twelfth aspect of the invention, in an information recording / reproducing apparatus for information recording / reproducing an information recording medium which does not require a link sector between sectors, a track reservation processing means for accepting a track reservation, and Dummy data recording means for recording dummy data in the last block of the track reserved in the reservation acceptance processing by the track reservation processing means.

Therefore, when a track is reserved, dummy data is recorded in the last block of the reserved track. Therefore, in the case of a normal track which has not been reserved and has already been recorded in relation to the next track. Same as
Since the RF signal can be synchronized with the dummy data of the last block, normal reproduction can be performed immediately after the reserved track. Therefore, since there is no problem even if the next track is recorded with the position immediately after the reserved track as the start position, there is no need for a so-called RUN-IN recording area, and regardless of the presence of the reserved track, Data can be accurately read from the head position of the track.

According to a thirteenth aspect of the present invention, in an information recording / reproducing control method for targeting information recording / reproducing on an information recording medium which does not require a sector for linking between sectors, a preset value is set just before each track on the information recording medium. The target area confirmation step of confirming whether or not the data is recorded by reproducing the dummy data recording equivalent area, and whether the data is recorded by reproducing the last block of the track immediately before the dummy data recording equivalent area. If it is confirmed that the data has been recorded by the immediately preceding region confirming step for confirming whether or not the target region confirming step has been performed, and if it is confirmed that the data has not been recorded by the immediately preceding region confirming means, the dummy A determination step of determining that the data recording equivalent area is a dummy data recording area.

Therefore, even if there is data in the dummy data recording area, whether the data is the dummy data recording area in which the dummy data is recorded due to the track reservation,
Or, I do not know whether it is the data of the original next track, but in the case of dummy data accompanying the track reservation,
Since the last block of the track immediately before that is usually an unrecorded area, it is confirmed whether or not there is data in this last block portion. If not, the target dummy data recording area is the dummy data recording area. Can be determined. In this case, the start position of the next track is the position immediately after the dummy data recording area. As a result, with respect to an information recording medium that does not require a sector for linking between sectors, data can be accurately read from the head position of the next track regardless of the presence of a reserved track.

According to a fourteenth aspect of the present invention, in an information recording / reproducing control method for targeting information recording / reproduction on an information recording medium which does not require a sector for linking between sectors, a track reservation processing step of accepting a track reservation, When the dummy data is recorded in the preset dummy data recording area immediately before the track on the information recording medium in response to the reservation acceptance by the track reservation processing step, a predetermined identifier is additionally recorded at a position that can be read independently. Identifier recording step, a recognition step of reproducing the dummy data recording equivalent area to recognize the presence or absence of the identifier, and the dummy data recording equivalent area is recognized when the presence of the identifier is recognized by the recognition step. A determination step of determining that the area is a dummy data recording area.

Therefore, by recording a predetermined identifier together with the recording of the dummy data when the reservation of the track is accepted, it is only necessary to reproduce the dummy data recording area and recognize the presence or absence of the identifier. Thus, it is possible to directly determine whether or not the corresponding dummy data recording area is the dummy data recording area. At this time, since the identifiers are independently recorded at readable positions, the dummy data recording equivalent area is reproduced with track reservation even if the area immediately before the dummy data recording equivalent area is an unrecorded area. The RF signals are synchronized with each other and the identifier can be surely recognized, so that the determination process can be surely performed.
As a result, with respect to an information recording medium that does not require a sector for linking between sectors, data can be accurately read from the head position of the next track regardless of the presence of a reserved track.

According to a fifteenth aspect of the present invention, in the information recording / reproducing control method in which an information recording medium conforming to the DVD + R standard is targeted for information recording / reproducing, RU is provided between each fragment.
A dummy data recording step of recording dummy data as N-IN (run-in) is provided, and R is set between each fragment.
The UN-IN recording area was used for connection.

Therefore, the RUN- is always used between each fragment.
Since it will be linked by the IN recording area and the RUN-IN recording area exists regardless of the presence or absence of the reserved fragment, the start address of the next fragment is always the last address + (RUN-IN recording area). Therefore, it is not necessary to determine whether or not it is the RUN-IN recording area, and the data can be accurately read from the head position of the next fragment.

According to the sixteenth aspect of the present invention, management information relating to data recording is recorded in the SDCB (session disc control block), which is in compliance with the DVD + R standard.
Further, in the information recording / reproducing control method in which the information recording / reproducing control target is the information recording medium which is updated every time the predetermined data recording is completed and additionally recorded in the new SDCB, the fragment accepting the reservation of the fragment is received. A reservation processing step; a dummy data recording step of recording dummy data as RUN-IN (run-in) in the RUN-IN recording area immediately after the reservation reserved after the reservation acceptance processing by the fragment reservation processing step; SDC for fragment
As the management information of B, a management information recording step of recording the fragment number, the start address and the end address which are the fragment information, and the next fragment information including the start address is provided.

Therefore, with the fragment reservation, the RUN-I is recorded in the RUN-IN recording area immediately after the final fragment.
When dummy data is recorded as N (run-in), the fragment information of the reserved fragment is recorded in the SDCB for management information, and the start address of the fragment information is recorded as the next fragment information. The head address can be directly recognized. Therefore, it is not necessary to judge whether or not it is the RUN-IN recording area, and with respect to the information recording medium compliant with the DVD + R standard, the data can be accurately read from the head position of the next fragment regardless of the presence of the reserved fragment. Is possible.

According to a seventeenth aspect of the present invention, in an information recording / reproducing control method for an information recording / reproducing target of an information recording medium which does not require a sector for linking between sectors, a track reservation processing step of accepting a track reservation, A dummy data recording step of recording dummy data in the last block of the track reserved in the reservation accepting process by the track reservation processing step.

Therefore, when a track is reserved, dummy data is recorded in the last block of the reserved track. Therefore, in the case of a normal track which has not been reserved and has already been recorded in relation to the next track. Same as
Since the RF signal can be synchronized with the dummy data of the last block, normal reproduction can be performed immediately after the reserved track. Therefore, since there is no problem even if the next track is recorded with the position immediately after the reserved track as the start position, there is no need for a so-called RUN-IN recording area, and regardless of the presence of the reserved track, Data can be accurately read from the head position of the track.

The invention described in claim 18 is installed in a computer equipped with an information recording / reproducing apparatus for information recording / reproducing an information recording medium which does not need a sector for linking between sectors, and the information recording medium is installed in the computer. A target area confirmation function for confirming whether or not data is recorded by reproducing a preset dummy data recording equivalent area immediately before each track on the medium, and reproducing the last block of the track immediately before the dummy data recording equivalent area. If it is confirmed that the data is recorded by the immediately preceding area confirmation function and the target area confirmation function that confirms whether or not the data is recorded, and that the data is not recorded by the immediately previous area confirmation means. When it is confirmed, a determination function of determining that the dummy data recording equivalent area is a dummy data recording area Which is an information recording reproduction control program for execution.

Therefore, whether or not the data exists in the dummy data recording corresponding area is the dummy data recording area in which the dummy data is recorded due to the track reservation.
Or, I do not know whether it is the data of the original next track, but in the case of dummy data accompanying the track reservation,
Since the last block of the track immediately before that is usually an unrecorded area, it is confirmed whether or not there is data in this last block portion. If not, the target dummy data recording area is the dummy data recording area. Can be determined. In this case, the start position of the next track is the position immediately after the dummy data recording area. As a result, with respect to an information recording medium that does not require a sector for linking between sectors, data can be accurately read from the head position of the next track regardless of the presence of a reserved track.

The invention described in claim 19 is installed in a computer equipped with an information recording / reproducing apparatus for recording / reproducing an information recording medium which does not require a sector for linking between sectors, and reserves a track in the computer. And a position that can be independently read when the dummy data is recorded in a preset dummy data recording area immediately before the track on the information recording medium due to the reservation reception by the track reservation processing function. An identifier recording function of recording a predetermined identifier together with a recognition function, a recognition function of reproducing the dummy data recording equivalent area to recognize the presence or absence of the identifier, and a case where the presence of the identifier is recognized by the recognition function. A determination function for determining that the dummy data recording area is a dummy data recording area, Which is an information recording reproduction control program to be executed.

Therefore, when the dummy data is recorded when the reservation of the track is accepted, a predetermined identifier is also recorded, and thereafter, the dummy data recording equivalent area is simply reproduced to recognize the presence or absence of the identifier. Thus, it is possible to directly determine whether or not the corresponding dummy data recording area is the dummy data recording area. At this time, since the identifiers are independently recorded at readable positions, the dummy data recording equivalent area is reproduced with track reservation even if the area immediately before the dummy data recording equivalent area is an unrecorded area. The RF signals are synchronized with each other and the identifier can be surely recognized, so that the determination process can be surely performed.
As a result, with respect to an information recording medium that does not require a sector for linking between sectors, data can be accurately read from the head position of the next track regardless of the presence of a reserved track.

According to the twentieth aspect of the present invention, the information recording / reproducing control device for information recording / reproducing of the information recording medium compliant with the DVD + R standard is installed in the computer, and the RU is provided between the fragments in the computer.
The dummy data recording function that records dummy data as N-IN (run-in) is executed, and R is set between each fragment.
This is an information recording / reproducing control program that is connected by the UN-IN recording area.

Therefore, RUN- is always used between each fragment.
Since it will be linked by the IN recording area and the RUN-IN recording area exists regardless of the presence or absence of the reserved fragment, the start address of the next fragment is always the last address + (RUN-IN recording area). Therefore, it is not necessary to determine whether or not it is the RUN-IN recording area, and the data can be accurately read from the head position of the next fragment.

According to a twenty-first aspect of the present invention, management information relating to data recording is recorded in an SDCB (session disc control block) in conformity with the DVD + R standard.
In addition, the management information is installed in a computer equipped with an information recording / reproducing apparatus for information recording / reproducing, the information recording medium being updated each time a predetermined data recording is completed and additionally recorded in a new SDCB. The fragment reservation processing function for accepting the reservation of the fragment and the RUN immediately after the fragment reserved after the reservation acceptance processing by the fragment reservation processing function.
A dummy data recording function for recording dummy data as RUN-IN (run-in) in the -IN recording area, and SDDC management information for the reserved fragment, together with the fragment number, the start address, and the end address, which are the fragment information, An information recording / reproducing control program for executing a management information recording function of recording the next fragment information including the start address.

Therefore, due to the fragment reservation, the RUN-I is recorded in the RUN-IN recording area immediately after the final fragment.
When dummy data is recorded as N (run-in), the fragment information of the reserved fragment is recorded in the SDCB for management information, and the start address of the fragment information is recorded as the next fragment information. The head address can be directly recognized. Therefore, it is not necessary to judge whether or not it is the RUN-IN recording area, and with respect to the information recording medium compliant with the DVD + R standard, the data can be accurately read from the head position of the next fragment regardless of the presence of the reserved fragment. Is possible.

The invention according to claim 22 is installed in a computer equipped with an information recording / reproducing apparatus for recording / reproducing an information recording medium which does not require a sector for linking between sectors, and reserves a track in the computer. And a dummy data recording function for recording dummy data in the last block of the track reserved in the reservation reception processing by the track reservation processing function.

Therefore, when a track is reserved, dummy data is recorded in the last block of the reserved track. Therefore, in the case of a normal track which has not been reserved and has already been recorded in relation to the next track. Same as
Since the RF signal can be synchronized with the dummy data of the last block, normal reproduction can be performed immediately after the reserved track. Therefore, since there is no problem even if the next track is recorded with the position immediately after the reserved track as the start position, there is no need for a so-called RUN-IN recording area, and regardless of the presence of the reserved track, Data can be accurately read from the head position of the track.

A twenty-third aspect of the present invention is a computer-readable storage medium in which the information recording / reproducing control program according to any one of the eighteenth to twenty-second aspects is stored.

Therefore, the same action and effect as in the case of the invention of the information recording / reproducing control program according to any one of claims 18 to 22 can be obtained.

[0066]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of the present invention.
Or, it demonstrates based on FIG. FIG. 1 is a block diagram showing a schematic configuration of an optical disc device 1 as an information recording / reproducing device according to the present embodiment.

This optical disk device 1 includes a spindle motor 3 for rotating an optical disk 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 disc 2, an information recording medium (hereinafter, referred to as a DVD + R standard compliant 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 disk 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 bidirectional communication interface with a host (for example, a PC) which is an external device, and conforms to standard interfaces such as ATAPI 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 an information recording / reproducing control program, which will be described later and is written in a code readable by the CPU 13. CPU
A control unit 13 controls the operation of each of the above-mentioned units according to a program stored in the ROM 12, and temporarily stores data necessary for control 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 12.

In the optical disk device 1 of the present embodiment, the target optical disk 2, DVD + R, is mounted on the optical disk device 1 and a request for acquisition of management information from the host side (for example, the start position of the next fragment for the additional write operation) A control example of the information recording / reproducing control process executed by the CPU 13 when the (information request) is issued will be described with reference to the flowchart shown in FIG.

In the optical disc device 1, when the optical disc 2 is mounted at a predetermined position of the optical disc device 1, the CPU 13 obtains information about the close session recorded at the predetermined position of the recording area of the optical disc 2, The address of the final closed session is extracted based on this information, and it is checked whether or not there is an open session following this final closed session. If there is an open session, the recorded contents of the SDCB of the open session are recorded. Read out and copy to RAM 14, and if there is no open session, read out the recorded contents of SDCB of the last closed session,
Copy to 14. That is, it is assumed that the final SDCB management information has already been copied to the RAM 14.

Following the mount process, first, the final S
Referring to the end address recorded in the DCB, FIG.
The ECC block area next to the last fragment as shown in (3) is reproduced and whether data is written in this area (R
It is confirmed whether or not there is an F signal (step S1).
The ECC block area next to the last fragment is an area in which dummy data (for example, data “0000 ... 0”) is recorded as RUN-IN (run-in) when the last fragment is a reserved fragment. Yes, and corresponds to a preset dummy data recording equivalent area immediately before each fragment. The processing of step S1 is executed as a target area confirmation unit, a target area confirmation step, and a target area confirmation function. As a result of the processing in step S1, when it is confirmed that no data is recorded in the area (N in S2), it is determined that there is no RUN-IN (run-in) as it is (S3), and the subsequent processing is performed.

On the other hand, as a result of the processing in step S1, when it is confirmed that the data is recorded in the area (Y in S2), this time, the final ECC block area of the final fragment is reproduced and this area is reproduced. It is confirmed whether or not the data is written in (there is no RF signal) (S4). The process of step S4 is executed as the immediately preceding region confirmation means, the immediately preceding region confirmation step, and the immediately preceding region confirmation function. As a result of the processing in step S4, when it is confirmed that the data is recorded in the area (Y in S5), it is determined that there is no RUN-IN (run-in) as it is (S3), and the process proceeds to the subsequent processes. In this case, the start position of the next ECC block is directly recognized as the start address of the next fragment.

As a result of the processing in step S4, it is confirmed that no data is recorded in the area (S5).
N), the last fragment is an unrecorded area due to a reserved fragment, and the above-mentioned next ECC block is a RUN-IN recording area in which dummy data is recorded as RUN-IN (run-in) due to reservation. A determination is made (S6). The processing of these steps S2, S5, S6 is executed as a determination means, a determination step, and a determination function. Based on the result of the determination that the area is the RUN-IN recording area, the end position of the next ECC block is recognized as the start address of the next fragment.

Thus, according to this embodiment, the RU
By checking whether or not there is data in the area corresponding to the N-IN recording and the area immediately before it, the RUN-IN
Whether the recording equivalent area is a real RUN-IN recording area,
Alternatively, it can be determined whether it is a normal next fragment area without reservation. Therefore, with respect to the optical disk 2 such as a DVD + R which does not require a sector for linking between sectors, data can be accurately read from the head position of the next fragment regardless of the presence of a reserved fragment.

Regarding the processing of this embodiment, as shown in FIG. 4, steps S1 and S2 and steps S4 and S4 are performed.
The order of confirmation with S5 may be reversed.

In the case of the processing order of FIG. 2, if no data is written in the next ECC block of interest (N in S1 and S2), it is determined that there is no RUN-IN (run-in) at that time. (S3), it is possible to move to the subsequent processing. On the other hand, in the case of the processing order of FIG. 4, the “last ECC block” and the “next ECC block” are the access order of the DVD + R.
The confirmation processing can be performed once in the order of “block”, and the confirmation processing speed increases.

A second embodiment of the present invention will be described with reference to FIGS. The same parts as those shown in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted (the same applies to the following embodiments).

In the present embodiment, when there is a fragment reservation request from the host side, the processing for accepting the reservation is performed (S11), but with the reservation acceptance of this fragment, the fragment and the next fragment are R in the RUN-IN recording equivalent area (1 ECC block) between
When recording dummy data as UN-IN, RUN
An identifier capable of discriminating the −IN is also recorded (S12). The process of step S11 is executed as a track reservation unit, a track reservation step, and a track reservation function, and the process of step S12 is executed as an identifier recording unit, an identifier recording step, and an identifier recording function.

Here, the RUN-IN recording equivalent area (1E
The CC block) will be described with reference to FIG. RU
Not only for the N-IN recording area but generally for the recording information recorded on the DVD + R, the data sector 2 as shown in FIG.
It is composed of a physical structure including a plurality of 0s, and one ECC block is composed of 16 sectors. Each data sector 2
In 0, an ID area 21 (4 bytes) for ID information indicating the head position of the data sector 20 from the head,
ID information error correction code (IEC = ID Data Error correction) for correcting an error in the ID area 21.
Code (22) (2 bytes), spare data 23 (6 bytes), main data 24 (2048 bytes) to be recorded, and an error detection code (EDC = Error Deletion Code) for detecting an error in the data 24.
25 (4 bytes) is included, and the total is 2064 bytes. In the last sector as an independently readable position in the 16 data sectors 20 forming one ECC block, a specific pattern that is a repeating pattern in the column of the main data 24 is, for example, ASCII.
By repeatedly writing "RUN-IN" or repeatedly writing the increment pattern (00H to FFH), the above-mentioned identifier can be obtained.

Next, an example of processing control when such an optical disc 2 is mounted will be described with reference to the flowchart shown in FIG. Following the mount processing, first, referring to the end address recorded in the final SDCB, the ECC next to the final fragment as shown in FIG.
The block area is reproduced and it is confirmed whether or not data is written in this area (whether or not there is an RF signal) (S2).
1). As a result of the processing in step S21, it is confirmed that no data is recorded in the area (S2
No. 2), it is determined that there is no RUN-IN (run-in) (S23), and the process proceeds to the subsequent steps. On the other hand, when it is confirmed that the data is recorded in the area (S2
2 Y), RUN-I by reproducing the data in the area
It is recognized whether or not the identifier indicating N is included (S24). In the recognition process, when the identifier is included, it belongs to the last sector which is an independently readable position among the 16 data sectors 20 configuring one ECC block, so the last block before the ECC block is reserved. It is possible to surely read regardless of whether or not it is the unrecorded area. Steps S21 and S22 Y and S
24 processes are performed as a recognition means, a recognition step, and a recognition function.

As a result of this recognition processing, if the identifier is not recognized (N in S25), it is determined that there is no RUN-IN (run-in) (S23), and the subsequent processing is performed. On the other hand, if the identifier is recognized as a result of the recognition processing (Y in S25), it is determined that the ECC block is a RUN-IN recording area in which dummy data is recorded as RUN-IN due to reservation (S26). Y and S2 in these steps S25
The processing of No. 6 is executed as the determination means, the determination step, and the determination function. Based on the result of the determination that the area is the RUN-IN recording area, the end position of the ECC block is recognized as the start address of the next fragment.

As described above, according to this embodiment, the RUN
-If data exists in the IN recording equivalent area, it is determined whether or not the RUN-IN recording equivalent area is an actual RUN-IN recording area depending on whether or not a predetermined identifier is included. Therefore, even if the ECC block immediately before that area was initially a reserved area, even if the area has already been written after the reservation, the RUN-IN
It can be surely determined that the area is the recording area, and the start address of the next fragment can be accurately known.

The identifier and the writing position thereof may not be discriminated as normal data in the data section as shown in FIG. 6, but in this case, as shown in FIG. Last data sector 2
The identifier may be written in a specific location in the ID area 21 (4 bytes) belonging to 0. For example, "1" in the "Reserved" column of the bit b28 in the ID area 21 may be written as an identifier (normally, it is initialized to "0").

When recording dummy data as a RUN-IN with an identifier, if it is not desired to be restricted by the write position of the identifier (in the case where it is not always necessary to read independently) ) Is effective when combined with the processing control example shown in FIG. An example of this processing control is shown in FIG. That is, as described above, when data is written in the final ECC block of the final fragment (Y in S4 and S5), basically, the final fragment is not a reserved fragment but a normal fragment. However, in some cases, it may be an area initially reserved but already written after reservation. Therefore, in this case, the ECC block next to the last fragment is again read. It is reproduced to recognize whether or not the identifier exists (S24). At this time, even if the identifier exists in the first sector or the like in the ECC block, it is premised that the immediately preceding ECC block has been recorded, so that the RF signal can be reliably read by maintaining the synchronization. As a result of such recognition processing, if the identifier is included (Y in S25), it is determined that the ECC block is a RUN-IN recording area in which dummy data is recorded as RUN-IN due to reservation (S).
6).

A third embodiment of the present invention will be described with reference to FIGS. In the present embodiment, not only when the fragment is reserved but also when the fragment is closed, the dummy data is recorded as RUN-IN immediately after the fragment (S31) (S32). Is. This step S
The process of 32 is executed as a dummy data recording unit, a dummy data recording step, and a dummy data recording function. That is, when a fragment is reserved, dummy data is recorded as RUN-IN in accordance with the DVD + R standard. In addition to this, dummy data is normally recorded as RUN-IN when fragment close processing is performed. It records data. As a result, the fragments are always connected by the RUN-IN recording area.

Here, the fragment closing process will be described with reference to FIG. If the fragment closing process is used for the reservation of the fragment that secures the area to be used in advance, writing can be performed without deciding the area to be used. Now, as shown in FIG. 11A, a fragment in which data is written halfway and the data is blank after that is called an open fragment. Closing is to add additional data where data is written. That is, when the data is written as shown in FIG. 11A, the fragment is closed,
As shown in FIG. 11B, dummy data is written as RUN-IN, and then data is written to the next fragment.

As a result, in the case of the DVD + R optical disc 2 of the present embodiment, the session configuration is as shown in FIG. 12A, a lead-in (Lead-In) area, a fragment, a RUN-IN recording area, a fragment, RUN-
IN recording area, fragment, ..., Fragment, lead-out area, and the fragments are always connected by the RUN-IN recording area. Therefore, since the RUN-IN recording area exists regardless of the presence of the reserved fragment, the start address of the next fragment is always the final address + 16 sectors (1 ECC for the RUN-IN recording area). It is possible to accurately read the data from the head position of the next fragment without the necessity of determining whether or not it is the RUN-IN recording area.

By the way, in the case of a CD-recordable disc such as a CD-R, as shown in FIG. 12B, at the time of recording in units of packets or tracks, a link for one sector is headed, followed by a sector for four sectors. The RUN-IN and the RUN-OUT for two sectors are recorded later. The link portion becomes a physical joint of EFM data. Also, R
The UN-IN recording area is provided because the interleaving length of the CIRC extends over 108 EFM frames, so that physical recording must be started at least 2 sectors before the beginning of the user data, and the EFM bit in the link part. This is because the synchronization of each unit and frame is disturbed, and therefore a buffer sector is required to recover the synchronization. RUN-O
The UT region is also provided for the resolution of CIRC interleaving. That is, in the case of the CD system, since the precision is low, a discontinuous portion is formed between the tracks when writing at the track-at-once, and an error occurs at the time of reproduction. OUT
By writing the adjustment block, the mutual data is prevented from being destroyed and the essential data can be correctly reproduced.

Therefore, both the present embodiment and the CD type disc have the same structure in that the RUN-IN recording area is always provided for each recording unit, but continuous fragment recording is possible. In the case of the present embodiment intended for an optical disk 2 such as a DVD + R that does not require a link sector between sectors, in the case of a CD system that requires a link sector between sectors to prevent data destruction, etc. Is a different idea. In the CD system, this is RUN-IN and RUN for each track or packet.
DVD + is required while a pair with -OUT is required.
In the present embodiment for the optical disc 2 such as R, the RU is used.
It is clear from the fact that only N-IN is required.

A fourth embodiment of the present invention will be described with reference to FIGS. 13 to 17. In this embodiment, the DVD
The SDCB (session disc control block) defined by the + R standard is used. That is, the optical disc 2 of DVD + R has an SDCB as an area for recording management information which is fragment position information. The fragment number, the start address, and the end address are recorded in this SDCB. Also, the SDCB area is 16 EC per session.
There are C blocks, and one ECC block is used for one SDCB. SDCB every time a fragment is added
Since it is also added, a maximum of 16 fragments can be recorded per session. Such SDCB is basically recorded when the end address of the fragment is determined, that is, when the fragment is reserved or when the fragment is closed (data is not additionally written).

Under such a premise, in the present embodiment,
First, when there is a reservation for a fragment, a process for accepting the reservation for the fragment is performed (S41), and thereafter, the RUN immediately after the fragment is accompanied by the reservation acceptance.
Dummy data is recorded in the -IN recording area as RUN-IN (run-in) (S42). The process of step S41 is executed as a fragment reservation processing unit, a fragment reservation processing step, and a fragment reservation processing function, and the process of step S42 is executed as a dummy data recording unit, a dummy data recording step, and a dummy data recording function. Continue to SDC for reserved fragments
As the management information of B, together with its fragment information (fragment number, start address and end address),
As the fragment information next to the reserved fragment, the fragment number and the start address are recorded (S4
3). The processing of step S43 is the management information recording means,
It is executed as a management information recording step and a management information recording function.

Now, the SDCB of DVD + R will be described with reference to FIGS. 14 and 15. According to the DVD + R standard, a format as shown in FIG. 14 is defined. One such SDCB is one per session
You can write six. As shown in FIG. 14, SDCB
"Contents Descriptor""Unknown Content
s Descriptor Actions "" Drive ID "" Session
In addition to including descriptions such as "Number (session number)", SD
As information peculiar to CB, a plurality (0 to
n) “Session Item” exists.

There are two types of "Session Item" such as "Fragment Item" indicating fragment information within the session and "Previous Session Item" indicating session information before the session.

FIG. 15 shows a format example of "Fragment Item". During the format of "Fragment Item", "Fragment number" and "F
Fragment information such as ragment start address (fragment start address) "Fragment end address (fragment end address)" is set to be described as management information.
The character string "F that identifies the Fragment Item" is included in "scriptor".
RG "is described. Such a" Fragment Item "
For each fragment existing in the session
It is prepared as one of "sion item".

Also, an actual writing example of SDCB is shown in FIG.
6 and FIG. 17, a description will be given. Now, assume that a fragment is reserved, RUN-IN is written immediately after the fragment, and the next fragment is started immediately after the RUN-IN recording area, as shown in FIG. The head address of the reserved fragment is 300.
00H and length 1000H, Fra of final SDC
Management information is written in the gment Item as shown in FIG. In FIG. 17, the column of Fragment number = 1 indicates the fragment fragment address reserved as fragment information = 30000H and end address = 30FFF.
H is written, and the head address = 31010H at which the next fragment is written is written in the Fragment number = 2 field. Since the address between Fragment number = 1 and 2 is empty for one ECC block (= 16 sectors), it can be seen that the RUN-IN recording area exists here. By the way, by setting a non-existent fictitious address FFFFFH as the end address of the next fragment with Fragment number = 2, the final fragment is not reserved, and
It turns out that it is not a closed fragment either. However, as such a temporary end address, FFF
It is not limited to FFH, and may be, for example, 00000H or the like, or may be the same as 31010H (start address), as long as it is known that the fragment is open.

As described above, according to this embodiment, the RUN-I immediately after the fragment is reserved due to the fragment reservation.
When dummy data is recorded as RUN-IN (run-in) in the N recording area, the fragment information of the reserved fragment is recorded in the SDCB for management information, and the start address of the fragment information is recorded as the next fragment information to manage the SDCB. The information makes it possible to directly recognize the start address of the next fragment. Therefore, R
There is no need to judge whether it is the UN-IN recording area,
With respect to the optical disc 2 conforming to the D + R standard, data can be accurately read from the head position of the next fragment regardless of the presence of the reserved fragment.

The fifth embodiment of the present invention will be described with reference to FIGS. 18 and 19. In the present embodiment, when there is a fragment reservation, a process for accepting the reservation for the fragment is performed (S51), and with this reservation acceptance, dummy data is recorded in the final ECC block which is the final block in the fragment. (S52). The processing of step S51 is executed as the track reservation processing means, the track reservation processing step, and the track reservation processing function, and the processing of step S52 is executed as the dummy data recording means, the dummy data recording step, and the dummy data recording function.

According to the present embodiment, when a fragment is reserved, dummy data is recorded in the last ECC block in the reserved fragment. Therefore, the dummy data is recorded without being reserved in relation to the next fragment. This final EC is the same as for normal fragments
Since the RF signal can be synchronized with the dummy data of the C block, normal reproduction can be performed immediately after the reserved fragment. Therefore, since there is no problem in recording the next fragment with the position immediately after the reserved fragment as the fragment start position, the UN-IN area is not required and the next fragment is recorded regardless of the existence of the reserved fragment. The data can be read accurately from the beginning position of the.

[0104]

According to the first aspect of the present invention, even if data exists in the dummy data recording equivalent area, whether the data is a dummy data recording area in which dummy data is recorded according to track reservation, or I do not know if it is the data of the original next track, but in the case of dummy data accompanying track reservation, the last block of the track immediately before that is usually an unrecorded area, so there is data in this last block part. If it does not exist, it can be determined that the target dummy data recording equivalent area is the dummy data recording area. In this case, the start position of the next track is the dummy data recording area. Since it is the position immediately after, for information recording media that do not require sectors for linking between sectors, the next track is It can be read correctly the data from the head position of the click.

According to the second aspect of the present invention, in the information recording / reproducing apparatus according to the first aspect, it is confirmed that there is no data in the preset dummy data recording corresponding area immediately before the target track. It is possible to determine that the area is not the dummy data recording area at that time and move to the subsequent processing.

According to the third aspect of the invention, in the information recording / reproducing apparatus according to the first aspect, the "last block of the track immediately before the dummy data recording equivalent area" and the "track" in the access order of the write-once type information recording medium. It is possible to perform the confirmation processing whether or not the data exists in the order of the “previously set dummy data recording equivalent area” in one time, and it is possible to increase the confirmation processing speed.

According to the invention of claim 4, claim 1,
In the information recording / reproducing apparatus described in 2 or 3, when a dummy data is recorded when a reservation of a track is accepted, a predetermined identifier is also recorded, so that a dummy data recording corresponding area where data normally does not exist when the track is reserved. Even after data is written in the last block of the immediately preceding track, it is possible to reliably determine whether or not the dummy data recording equivalent area is the dummy data recording area by recognizing the existence of the identifier. .

According to the invention of claim 5, a predetermined identifier is also recorded when the dummy data is recorded when the reservation of the track is accepted. Therefore, after that, the area corresponding to the dummy data recording is reproduced. It is possible to directly determine whether or not the dummy data recording equivalent area is a dummy data recording area simply by recognizing the presence or absence of the identifier by using the identifier. At this time, the identifier can be read independently. Therefore, even if the area immediately before the dummy data recording equivalent area is an unrecorded area due to track reservation, the RF signal can be synchronized while the dummy data recording equivalent area is reproduced and the identifier can be surely obtained. It can be recognized and the judgment process can be performed surely, and as a result, the presence of the reserved track in the information recording medium that does not require the link sector between the sectors. Ikagani Regardless, it is possible to read out data accurately from the head position of the next track.

According to the invention of claim 6, in the information recording / reproducing apparatus of claim 5, the identifier is recorded at the last sector position of the corresponding dummy data recording equivalent area. As the area is reproduced, the RF signals are synchronized and the identifier can be surely recognized.

According to the invention of claim 7, data having a specific repeating pattern such as repeating dummy data can be used as the identifier, and the information recording / reproducing apparatus of claim 6 can be easily implemented. Can be realized.

According to the eighth aspect of the invention, when the data area is used as the identifier, it may not be possible to distinguish from the normal data, but the information indicating the dummy data is used by using the ID area. As a result, more reliable recognition is possible, and the information recording / reproducing apparatus according to claim 6 can be easily and properly realized.

According to the ninth aspect of the invention, in the information recording / reproducing apparatus according to any one of the first to eighth aspects, specifically, a situation in which an information recording medium conforming to the DVD + R standard is to be recorded / reproduced. It is possible to determine below whether or not the dummy data recording equivalent area is the RUN-IN recording area, and the data is accurately read from the head position of the next fragment regardless of the presence of the reserved fragment. be able to.

According to the tenth aspect of the invention, the fragments are always connected by the RUN-IN recording area, and the RUN-IN recording area exists regardless of the presence or absence of the reserved fragment. , The start address of the next fragment is always the end address + (RUN
-IN recording area), it is possible to read data accurately from the head position of the next fragment without the need to judge whether or not it is the RUN-IN recording area.

According to the eleventh aspect of the present invention, when the dummy data is recorded as RUN-IN (run-in) in the RUN-IN recording area immediately after the fragment due to the fragment reservation, the reserved fragment of the management information SDCB is recorded. By recording the top address as the next fragment information together with the fragment information,
The start address of the next fragment can be directly recognized by the management information of SDCB. Therefore, RUN
-DVD + without needing to determine whether it is the IN recording area
With respect to the information recording medium conforming to the R standard, data can be accurately read from the head position of the next fragment regardless of the presence of the reserved fragment.

According to the twelfth aspect of the invention, when the track is reserved, the dummy data is recorded in the last block of the reserved track. Therefore, the reservation is not received in the relationship with the next track. As in the case of a normal track that has already been completed, the RF signal can be synchronized by the dummy data of this last block, so that normal reproduction can be performed immediately after the reserved track, and thus the position immediately after the reserved track. Since there is no problem even if the next track is recorded with the start position as, the so-called RUN
It is possible to accurately read data from the head position of the next track regardless of the presence of the reserved track without requiring the -IN recording area.

According to the thirteenth aspect of the present invention, whether data exists in the dummy data recording corresponding area is the dummy data recording area in which the dummy data is recorded due to the track reservation, or Although it is not known whether it is the data of the next track, in the case of dummy data accompanying track reservation, the last block of the track immediately before that is usually an unrecorded area, so whether data exists in this last block part or not. If it does not exist, it can be determined that the target dummy data recording equivalent area is the dummy data recording area. In this case, the start position of the next track is the position immediately after the dummy data recording area. Therefore, for information recording media that do not require sectors for linking between sectors, the next track is irrespective of the presence of reserved tracks. It can be read correctly the data from the head position of the.

According to the fourteenth aspect of the present invention, when the dummy data is recorded along with the reservation acceptance of the track, a predetermined identifier is also recorded. It is possible to directly determine whether or not the corresponding dummy data recording area is a dummy data recording area by simply recognizing the presence or absence of. At this time, since the identifiers are independently recorded at readable positions, the dummy data recording equivalent area is reproduced with track reservation even if the area immediately before the dummy data recording equivalent area is an unrecorded area. Since the RF signals are synchronized with each other, the identifier can be surely recognized, and the determination processing can be surely performed, whereby a reserved track exists in the information recording medium that does not require a sector for linking between the sectors. Regardless of the above, data can be accurately read from the head position of the next track.

According to the fifteenth aspect of the invention, the fragments are always connected by the RUN-IN recording area, and the RUN-IN recording area exists regardless of the presence or absence of the reserved fragment. , The start address of the next fragment is always the end address + (RUN
-IN recording area), it is possible to read data accurately from the head position of the next fragment without the need to judge whether or not it is the RUN-IN recording area.

According to the sixteenth aspect of the present invention, the RUN-I immediately after the final fragment is accompanied by the fragment reservation.
When dummy data is recorded in the N recording area as RUN-IN (run-in), the fragment information of the reserved fragment is recorded in the SDCB for management information, and the start address of the fragment information is recorded as the next fragment information to manage the SDCB. The information allows the start address of the next fragment to be directly recognized, and thus the RU
It is not necessary to determine whether it is the N-IN recording area,
With respect to the information recording medium conforming to the + R standard, data can be accurately read from the head position of the next fragment regardless of the presence of the reserved fragment.

According to the seventeenth aspect of the invention, when the track is reserved, the dummy data is recorded in the last block of the reserved track. Therefore, the reservation is not received in the relationship with the next track. As in the case of a normal track that has already been completed, since the RF signal can be synchronized by the dummy data of this last block, normal reproduction can be performed immediately after the reserved track, and the position immediately after the reserved track is the first. Since there is no problem even if the next track is recorded as the position, the so-called RUN-IN recording area is not required and the data can be accurately read from the head position of the next track regardless of the presence of the reserved track. It can be carried out.

According to the eighteenth aspect of the present invention, even if the data exists in the dummy data recording equivalent area, whether the data is the dummy data recording area in which the dummy data is recorded due to the track reservation, or the original data is recorded. Although it is not known whether it is the data of the next track, in the case of dummy data accompanying track reservation, the last block of the track immediately before that is usually an unrecorded area, so whether data exists in this last block part or not. If it does not exist, it can be determined that the target dummy data recording equivalent area is the dummy data recording area. In this case, the start position of the next track is the position immediately after the dummy data recording area. Therefore, for information recording media that do not require sectors for linking between sectors, the next track is irrespective of the presence of reserved tracks. It can be read correctly the data from the head position of the.

According to the nineteenth aspect of the present invention, when the dummy data is recorded along with the acceptance of the reservation of the track, a predetermined identifier is also recorded. It is possible to directly determine whether or not the corresponding dummy data recording area is a dummy data recording area by simply recognizing the presence or absence of. At this time, since the identifiers are independently recorded at readable positions, the dummy data recording equivalent area is reproduced with track reservation even if the area immediately before the dummy data recording equivalent area is an unrecorded area. Since the RF signals are synchronized with each other, the identifier can be surely recognized, and the determination processing can be surely performed, whereby a reserved track exists in the information recording medium that does not require a sector for linking between the sectors. Regardless of the above, data can be accurately read from the head position of the next track.

According to the twentieth aspect of the invention, the fragments are always connected by the RUN-IN recording area, and the RUN-IN recording area exists regardless of the presence or absence of the reserved fragment. , The start address of the next fragment is always the end address + (RUN
-IN recording area), it is possible to read data accurately from the head position of the next fragment without the need to judge whether or not it is the RUN-IN recording area.

According to the twenty-first aspect of the invention, the RUN-I immediately after the final fragment is accompanied by the fragment reservation.
When dummy data is recorded as RUN-IN (run-in) in the N recording area, the fragment information of the reserved fragment is recorded in the SDCB for management information, and the start address of the fragment information is recorded as the next fragment information to manage the SDCB. The information allows the start address of the next fragment to be directly recognized, and thus the RU
It is not necessary to determine whether it is the N-IN recording area,
With respect to the information recording medium conforming to the + R standard, data can be accurately read from the head position of the next fragment regardless of the presence of the reserved fragment.

According to the twenty-second aspect of the invention, when the track is reserved, the dummy data is recorded in the last block of the reserved track. Therefore, the reservation is not received in the relationship with the next track. As in the case of a normal track that has already been completed, the RF signal can be synchronized by the dummy data of this last block, so that normal reproduction can be performed immediately after the reserved track, and thus the position immediately after the reserved track. Since there is no problem even if the next track is recorded with the start position as, the so-called RUN
It is possible to accurately read data from the head position of the next track regardless of the presence of the reserved track without requiring the -IN recording area.

According to the invention of claim 23, claim 1
The same effect as that of the invention of the information recording / reproducing control program described in any one of 8 to 22 can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing an information recording / reproducing apparatus of a first embodiment of the present invention.

FIG. 2 is a schematic flowchart showing an example of processing control.

FIG. 3 is a schematic explanatory diagram showing a positional relationship between ECC blocks and the like.

FIG. 4 is a schematic flowchart showing a modification of processing control.

FIG. 5 is a schematic flowchart showing an example of fragment reservation processing during processing control according to the second embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a configuration example of one sector in an ECC block.

FIG. 7 is a schematic flowchart showing an example of mount processing during processing control of the present embodiment.

FIG. 8 is an explanatory diagram showing a configuration example of an ID area in one sector.

FIG. 9 is a schematic flowchart showing a modified example.

FIG. 10 is a schematic flowchart showing an example of processing control according to a third embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a case of a close process.

FIG. 12 is an explanatory diagram shown in comparison with a CD system.

FIG. 13 is a schematic flowchart showing an example of processing control according to a fourth embodiment of the present invention.

FIG. 14 is an explanatory diagram showing an example format of SDCB.

FIG. 15 is an explanatory diagram showing a configuration example of the fragment item.

FIG. 16 is an explanatory diagram showing an example of reservation processing.

FIG. 17 is an explanatory diagram showing a specific writing example of SDCB.

FIG. 18 is a schematic flowchart showing an example of processing control according to a fifth embodiment of the present invention.

FIG. 19 is an explanatory diagram showing an example of writing dummy data thereof.

[Explanation of symbols]

2 information recording medium S1 target area confirmation means, target area confirmation step,
Target area confirmation function S4 Previous area confirmation means, previous area confirmation step,
Immediately preceding area confirmation function S2, S5, S6 determination means, determination step, determination function S11 track reservation processing means, track reservation processing step, track reservation processing function S12 identifier recording means, identifier recording step, identifier recording function S24 recognition means, recognition step , Recognition function S25, S26 determination means S32 dummy data recording means, dummy data recording step, dummy data recording function S41 fragment reservation processing means, fragment reservation processing step, fragment reservation processing function S42 dummy data recording means, dummy data recording step, dummy Data recording function S43 management information recording means, management information recording step, management information recording function S51 track reservation processing means, track reservation processing step, track reservation processing function S52 dummy data recording means, dummy Over data recording step, dummy data recording function

Claims (23)

[Claims] 1. An information recording / reproducing apparatus for information recording / reproducing an information recording medium which does not require a sector for linking between sectors, wherein a preset dummy data recording corresponding area immediately before each track on the information recording medium. Target area confirmation means for confirming whether or not data is recorded by reproducing the data, and an area just before confirming whether or not data is recorded by reproducing the last block of the track immediately before the dummy data recording equivalent area If it is confirmed by the confirming means and the target area confirming means that the data is recorded, and the immediately preceding area confirming means confirms that the data is not recorded, the dummy data recording corresponding area is the dummy data. An information recording / reproducing apparatus comprising: a determining unit that determines a recording area. 2. The immediately preceding area confirming means confirms whether or not the data is recorded after the target area confirming means confirms that the data is recorded. Information recording / reproducing apparatus described. 3. The target area confirmation means confirms whether or not the data is recorded after the previous area confirmation means confirms that the data is not recorded. Information recording / reproducing apparatus described. 4. A track reservation processing means for receiving a reservation of a track, an identifier recording means for recording a predetermined identifier when the dummy data is recorded when the reservation is accepted by the track reservation processing means, and the dummy data. Recognizing means for recognizing the presence or absence of the identifier by reproducing the recorded equivalent area, the determining means is confirmed by the target area confirming means that the data is recorded, and the immediately preceding area confirming When it is confirmed that the data is recorded by the means, it is determined that the dummy data recording equivalent area is a dummy data recording area when the presence of the identifier is recognized by the recognition means. The information recording / reproducing apparatus according to claim 1, 2, or 3. 5. An information recording / reproducing apparatus for information recording / reproducing an information recording medium which does not require a sector for linking between sectors, and a track reservation processing means for accepting reservation of a track, and a reservation made by the track reservation processing means. Identifier recording means for recording a predetermined identifier together at an independently readable position when dummy data is recorded in a preset dummy data recording corresponding area immediately before a track on the information recording medium upon reception, Recognizing means for recognizing the presence or absence of the identifier by reproducing the dummy data recording equivalent area, and the dummy data recording equivalent area being the dummy data recording area when the presence of the identifier is recognized by the recognizing means. An information recording / reproducing apparatus comprising: a determining unit for determining. 6. The information recording / reproducing apparatus according to claim 5, wherein the identifier recording means records the identifier at a final sector position of a corresponding dummy data recording area as an independently readable position. . 7. The information recording / reproducing apparatus according to claim 6, wherein the identifier recording means records the identifier in a data area in the final sector by a specific repeating pattern. 8. The information recording / reproducing apparatus according to claim 6, wherein the identifier recording means records information indicating the dummy data in the ID area in the final sector as the identifier. 9. The information recording medium is an information recording medium compliant with the DVD + R standard, the track is a fragment, the dummy data is RUN-IN, and the dummy data recording area is RUN-. IN
9. The information recording / reproducing apparatus according to claim 1, wherein the information recording / reproducing apparatus is a recording area. 10. An information recording / reproducing apparatus for recording / reproducing an information recording medium compliant with the DVD + R standard, comprising dummy data recording means for recording dummy data as RUN-IN (run-in) between each fragment, An information recording / reproducing apparatus characterized in that each fragment is connected by a RUN-IN recording area. 11. According to the DVD + R standard, management information relating to data recording is recorded in an SDCB (session disc control block), and the management information is updated each time a predetermined data recording is completed and a new SD is recorded.
In an information recording / reproducing apparatus in which an information recording medium additionally recorded on a CB is an object of information recording / reproduction, fragment reservation processing means for accepting reservation of a fragment, and immediately after the fragment reserved after the reservation acceptance processing by the fragment reservation processing means. Dummy data recording means for recording dummy data as RUN-IN (run-in) in the RUN-IN recording area, and fragment number, start address and end address which are the fragment information as SDCB management information for the reserved fragment. An information recording / reproducing apparatus further comprising: management information recording means for recording the next fragment information including the start address. 12. An information recording / reproducing apparatus for information recording / reproducing an information recording medium which does not require a sector for linking between sectors, and a track reservation processing means for accepting a track reservation, and a reservation made by the track reservation processing means. An information recording / reproducing apparatus comprising: dummy data recording means for recording dummy data in the last block of the track reserved in the receiving process. 13. An information recording / reproducing control method for information recording / reproducing for an information recording medium which does not require a sector for linking between sectors, and which corresponds to preset dummy data recording immediately before each track on the information recording medium. A target area confirmation step of confirming whether or not data is recorded by reproducing the area, and immediately before confirming whether or not data is recorded by reproducing the last block of the track immediately before the dummy data recording equivalent area If it is confirmed by the area confirmation step and the target area confirmation step that data is recorded, and if it is confirmed by the immediately preceding area confirmation means that no data is recorded, the dummy data recording equivalent area is a dummy. An information recording / reproducing control method comprising: a determination step of determining that the area is a data recording area. 14. An information recording / reproducing control method for information recording / reproducing an information recording medium which does not require a sector for linking between sectors, comprising a track reservation processing step of accepting a track reservation, and a track reservation processing step. An identifier recording step of additionally recording a predetermined identifier at a position that can be independently read when recording dummy data in a preset dummy data recording equivalent area immediately before a track on the information recording medium upon receipt of a reservation, A recognition step of reproducing the dummy data recording corresponding area to recognize the presence or absence of the identifier, and the dummy data recording corresponding area is a dummy data recording area when the presence of the identifier is recognized by the recognition step. Information recording / reproducing control, characterized by comprising: Law. 15. An information recording / reproducing control method for recording / reproducing an information recording medium compliant with the DVD + R standard, comprising a dummy data recording step of recording dummy data as RUN-IN (run-in) between each fragment. An information recording / reproducing control method characterized in that the respective fragments are connected by a RUN-IN recording area. 16. A new SD that complies with the DVD + R standard, management information relating to data recording is recorded in an SDCB (session disc control block), and the management information is updated every time predetermined data recording is completed.
In an information recording / reproducing control method in which an information recording medium additionally recorded in a CB is targeted for information recording / reproducing, a fragment reservation processing step for accepting a reservation of a fragment, and the fragment reserved after the reservation acceptance processing by the fragment reservation processing step RUN-IN immediately after
A dummy data recording step of recording dummy data as RUN-IN in the recording area; and a start address together with a fragment number, a start address and an end address, which are the fragment information, as SDCB management information for the reserved fragment. And a management information recording step for recording the next fragment information including the following. 17. An information recording / reproducing control method for information recording / reproducing an information recording medium which does not require a sector for linking between sectors, comprising a track reservation processing step of accepting a track reservation, and a track reservation processing step. And a dummy data recording step of recording dummy data in the last block of the track reserved in the reservation acceptance process. 18. An information recording medium, which does not require a sector for linking between sectors, is installed in a computer provided in an information recording / reproducing apparatus for information recording / reproducing, and is installed in the computer immediately before each track on the information recording medium. A target area confirmation function for confirming whether or not data is recorded by reproducing a preset dummy data recording equivalent area, and data is recorded by reproducing the last block of the track immediately before the dummy data recording equivalent area. Immediately before the area confirmation function to confirm whether or not, if it is confirmed that the data is recorded by the target area confirmation function, and if it is confirmed that the data is not recorded by the immediately previous area confirmation means, And a determination function for determining that the area corresponding to the dummy data recording is a dummy data recording area. Recording / playback control program. 19. A track reservation processing function which is installed in a computer provided in an information recording / reproducing apparatus for information recording / reproducing an information recording medium which does not require a sector for linking between sectors, and which accepts a track reservation to the computer. When a reservation is received by the track reservation processing function, a predetermined identifier is added to a position that can be read independently when the dummy data is recorded in a preset dummy data recording area immediately before the track on the information recording medium. Corresponding to the dummy data recording, when the presence of the identifier is recognized by this recognition function. The determination function that determines that the area is a dummy data recording area, Playback control program. 20. Installed in a computer provided with an information recording / reproducing control device for recording / reproducing an information recording medium compliant with the DVD + R standard, and in the computer, dummy data as RUN-IN (run-in) is provided between each fragment. An information recording / reproducing control program for executing a dummy data recording function for recording, and connecting each fragment by a RUN-IN recording area. 21. According to the DVD + R standard, management information relating to data recording is recorded in an SDCB (session disc control block), and the management information is updated every time a predetermined data recording is completed, and a new SD is added.
An information recording medium additionally recorded in the CB is installed in a computer included in an information recording / reproducing apparatus for information recording / reproducing, and the computer has a fragment reservation processing function of accepting a fragment reservation, and a reservation by the fragment reservation processing function. A dummy data recording function of recording dummy data as RUN-IN (run-in) in a RUN-IN recording area immediately after the fragment reserved after the reception process, and the fragment information as SDCB management information for the reserved fragment. An information recording / reproducing control program for executing a management information recording function of recording a fragment number, a start address and an end address, and next fragment information including the start address. 22. A track reservation processing function which is installed in a computer provided in an information recording / reproducing apparatus for information recording / reproducing an information recording medium which does not require a sector for linking between sectors, and which accepts a track reservation to the computer. And a dummy data recording function for recording dummy data in the last block of the track reserved in the reservation acceptance processing by the track reservation processing function. 23. A computer-readable storage medium in which the information recording / reproducing control program according to any one of claims 18 to 22 is stored.