CN1695193A - Access method, access device, and information recording medium - Google Patents

Abstract

A method for accessing an information recording medium to which a data area is allocated. The information recording medium contains first file management information providing a first access method and second file management information for providing a second access method. The first file management information and the second file management information manage files recorded on the information recording medium. The method includes a step (a) for reading out the first file management information or the second file management information and a step (b) for accessing the data area by the access method provided by the first file management information or the second file management information read out.

Description

Access method, access device and information recording carrier

Technical field

The method of the 2nd access method access information recording medium that the present invention relates to the 1st access method that a kind of utilization provides by the 1st file control information and provide by the 2nd file control information and write down the information recording carrier of the 1st file control information and the 2nd file control information.

Background technology

Various information recording carriers (for example DVD-Video and DVD-RAM) all are to adopt OpticalStorage Technology Association (OSTA: the Universal Disc Format (TM) that is issued (unified disk format) (hereinafter referred to as UDF) file system optical storage techniques association).By using the UDF file system, can not rely on compatibility and medium kind between the equipment that utilizes information recording carrier, and realize the data recording and the reproduction of information recording carrier.UDF is an installation specification of following ECMA167.The UDF file system is used for senior equipment such as computer.

The file structure of UDF comprises the data structure of sector form, because in its volume space that is recorded in the information recording carrier to be distributed, so to the record position of file control information without limits.Therefore, be suitable for general file logging (for example jumbo file logging) (with reference to Standard ECMA-167 3rd Edition-June 1997:ECMA-StandardizingInformation and Communication Systems＜http://WWW.ecma.ch 〉).

But transcriber is in order to reproduce the mass data that is recorded in the information recording carrier, must successively reproducing have write down the real-time files of image, voice data.The number of files and the recovery time of therefore, opening increase pro rata.For example, in order to reproduce the content that takes a few hours, must open the file that a plurality of reproductions take the several seconds simultaneously.Consequently, transcriber needs jumbo storer.

In addition, need prevent to be recorded in the problem of the reliability decrease of the data in the information recording carrier at the logical layer of information recording carrier.For example, owing to the capacity of defective sector quantity along with information recording carrier increases, must take sufficient countermeasure to the reasons such as sector scar that cause defective sector.

The spy open disclose in the flat 4-157672 communique a kind of by being recorded in mutually different a plurality of file system in 1 information recording carrier, utilizing a plurality of operating systems record and reproducing the technology of file.But, the record-playback of such file can't be provided, following under the situation of file system arbitrarily, allow the record-playback of file, and under the situation of following the alternative document system, the record of file is restricted.Reason is only to provide a kind of access method for the data area of having write down file.

Summary of the invention

The present invention has used for reference the problems referred to above point, and purpose is to provide the 1st access method that a kind of utilization provides by the 1st file control information and the method for the 2nd access method access information recording medium that provided by the 2nd file control information and write down the information recording carrier of the 1st file control information and the 2nd file control information.

Access method of the present invention is a kind of method that is used for the divided information recording carrier in access data zone, record is used to provide the 1st file control information and the 2nd file control information that is used to provide the 2nd access method of the 1st access method in the above-mentioned information recording carrier, above-mentioned the 1st file control information and above-mentioned the 2nd file control information manage the file that is recorded in the above-mentioned information recording carrier, comprise: either party step that (a) reads above-mentioned the 1st file control information and above-mentioned the 2nd file control information, (b) utilization is by the access method that either party provided of above-mentioned the 1st file control information that reads and the 2nd file control information, the step of coming the above-mentioned data area of access; Realize above-mentioned purpose with this.

Also can be that above-mentioned the 1st access method is: access is carried out in above-mentioned data area make above-mentioned data area promptly reproduce the method that reserved area is brought into play function as only reproducing the file that writes down in the above-mentioned data area; Above-mentioned the 2nd access method is: access is carried out in above-mentioned data area make above-mentioned data area as reproducing and can make the method that is used for bringing into play function in the zone of log file in above-mentioned data area being recorded in file in the above-mentioned data area.

The access method of above-mentioned data area being carried out access also can be: the file that writes down in the above-mentioned data area comprises core set file and superset file; Above-mentioned core set file is the file that is used for realizing the basic function of given application; Above-mentioned superset file is the file that is used for realizing afore mentioned rules Application Expansion function; Above-mentioned the 1st access method is carried out access to above-mentioned data area, so that reproduce core set file and the superset file that comprises in the file that writes down in the above-mentioned data area; Above-mentioned the 2nd access method is only reproduced the core set file that comprises in the file that writes down in the above-mentioned data area and the above-mentioned core set file among the superset file.

Also can be to be assigned at least one zoning that is defined as the zone that above-mentioned the 1st access method can access in the above-mentioned information recording carrier and to be defined as at least one section in the zone that above-mentioned the 2nd access method can access; Above-mentioned data area is the overlapped overlapping region of the part of above-mentioned at least one zoning and above-mentioned at least one section.

Above-mentioned section comprises the 1st section and the 2nd section, can be overlapping by above-mentioned the 1st section and above-mentioned the 2nd section zone that constitutes and above-mentioned zoning.

Above-mentioned zoning and above-mentioned section can be that unit is cut apart with the ECC piece.

Above-mentioned steps (b) comprises file logging to the step of above-mentioned data area, said method may further include (c) upgrade above-mentioned the 1st file control information and above-mentioned the 2nd file control information in case with the corresponding step of the record position of above-mentioned file.

Be assigned at least one zoning that is defined as the zone that above-mentioned the 1st access method can access in the above-mentioned information recording carrier and be defined as at least one section in the zone that above-mentioned the 2nd access method can access; Above-mentioned data area can be the overlapped overlapping region of the part of above-mentioned at least one zoning and above-mentioned at least one section.

Above-mentioned section comprises the 1st section and the 2nd section, and above-mentioned the 1st section is the zone of the non real-time file of the record function that is used for realizing given application; Above-mentioned the 2nd section is the zone that is used for being recorded as the real-time files of the function that realizes the afore mentioned rules application; Above-mentioned steps (b) can comprise: the file of distinguishing above-mentioned record is the above-mentioned non real-time file or the step of above-mentioned real-time files; When being above-mentioned non real-time file with file when above-mentioned record, with above-mentioned non real-time file logging to above-mentioned the 1st section step; When the file of above-mentioned record is above-mentioned real-time files, above-mentioned real-time files is recorded above-mentioned the 2nd section step.

Above-mentioned the 2nd file control information comprises the end of record (EOR) positional information of expression end of record (EOR) position, and above-mentioned steps (b) comprises according to above-mentioned end of record (EOR) positional information the step of above-mentioned file logging in the above-mentioned data area.

Above-mentioned end of record (EOR) positional information is illustrated on the direction repeatedly, the position of end of record (EOR), and above-mentioned steps (b) also can comprise according to above-mentioned end of record (EOR) positional information above-mentioned file is recorded step in the above-mentioned data area in one direction repeatedly.

Above-mentioned the 2nd file control information comprises the record position information of the record position of representing above-mentioned the 1st file control information, above-mentioned steps (c) also can comprise upgrade above-mentioned the 2nd file control information above-mentioned record position information so that the step of the record position of above-mentioned the 1st file control information of corresponding above-mentioned renewal.

Above-mentioned the 1st file control information comprises the 1st and saves information from damage, is used for representing that the state of above-mentioned the 1st file control information is open mode or closed condition; Be used for representing the 1st of above-mentioned open mode is saved information representation from damage can be with the state of file logging in the above-mentioned information recording carrier, be used for representing that the 1st of above-mentioned closed condition saves the state that the information representation file is got off by normal recordings from damage, also can further comprise: save information from damage with the above-mentioned the 1st before in above-mentioned steps (b) and place the step of above-mentioned open mode and save the step that information places above-mentioned closed condition from damage with the above-mentioned the 1st afterwards in above-mentioned steps (b).

Above-mentioned the 2nd file control information comprises the 2nd and saves information from damage, is used for representing that the state of above-mentioned the 2nd file control information is open mode or closed condition; Be used for representing the 2nd of above-mentioned open mode is saved information representation from damage can be with the state of file logging in the above-mentioned information recording carrier, be used for representing that the 2nd of above-mentioned closed condition saves the state that the information representation file is got off by normal recordings from damage, also can further comprise: save information from damage with the above-mentioned the 2nd before in above-mentioned steps (b) and place the step of above-mentioned open mode and save the step that information places above-mentioned closed condition from damage with the above-mentioned the 2nd afterwards in above-mentioned steps (b).

Above-mentioned the 1st file control information comprises the 1st record position information that is used for representing to be recorded in the 1st file name information of the file name in the above-mentioned data area and is used for representing being recorded in the record position of file in the above-mentioned data area, above-mentioned the 2nd file control information comprises the 2nd record position information that is used for representing to be recorded in the 2nd file name information of the file name in the above-mentioned data area and is used for representing being recorded in the record position of file in the above-mentioned data area, said method also can further comprise: be used for distinguishing above-mentioned the 1st file name information and above-mentioned the 2nd file name information whether in correspondence with each other step and being used for distinguish whether in correspondence with each other step of above-mentioned the 1st record position information and above-mentioned the 2nd record position information.

Writing down file in the above-mentioned data area, above-mentioned steps (b) also can comprise the step that is used for reproducing above-mentioned file.

Access device of the present invention, be to be used for access to have distributed the device of the information recording carrier of data area, record the 1st file control information that is used to provide the 1st access method and the 2nd file control information that is used to provide the 2nd access method in the above-mentioned information recording carrier, above-mentioned the 1st file control information and above-mentioned the 2nd file control information manage the file that is recorded in the above-mentioned information recording carrier, comprise: reading unit is used for reading any one party of above-mentioned the 1st file control information and above-mentioned the 2nd file control information; And access unit, utilize and come the above-mentioned data area of access by the access method that either party provided of above-mentioned the 1st file control information that reads and the 2nd file control information; Realize above-mentioned purpose with this.

Above-mentioned access unit possesses file logging to the record cell of above-mentioned data area, said apparatus also can further possess above-mentioned the 1st file control information of renewal and above-mentioned the 2nd file control information in case with the corresponding updating block of the record position of above-mentioned file.

Record file in the above-mentioned data area, above-mentioned access unit also can possess the reproduction units that is used for reproducing above-mentioned file.

Information recording carrier of the present invention is the information recording carrier that has write down the 1st file control information and the 2nd file control information, above-mentioned the 1st file control information and above-mentioned the 2nd file control information manage the file that is recorded in the above-mentioned information recording carrier, the data area that above-mentioned the 1st file control information distributes in information recording carrier provides the 1st access method, above-mentioned the 2nd file control information provides the 2nd access method to above-mentioned data area, realizes above-mentioned purpose with this.

Description of drawings

Fig. 1 is the figure of the information recording carrier 100 of expression embodiments of the present invention.

Fig. 2 is the figure of expression bibliographic structure.

Fig. 3 is the UDF volume structure of the corresponding bibliographic structure shown in Figure 2 of expression and the figure of UDF file structure and SVFS volume structure and SVFS file structure.

Fig. 4 is the figure of the detailed UDF volume structure of expression.

Fig. 5 is the figure of the data structure of expression UDF file item.

Fig. 6 is the figure of data structure of the distribution descriptor of expression UDF.

Fig. 7 is the figure of data structure of the file identification descriptor of expression UDF.

Fig. 8 is the figure that represents 1SVFS file structure zone 108 in detail.

Fig. 9 is the figure of expression the 1st ring zone and sliding area example of continuous dispensing on disk.

Figure 10 is the figure of the data structure of the expression S Volume Descriptor that is recorded in the SVFS in the 1st ring zone 70 shown in Figure 8.

Figure 11 is the figure that expression is recorded in the file structure of the SVFS in the 2nd ring zone shown in Figure 7.

Figure 12 is the figure of the data structure of expression record descriptor.

Figure 13 is the figure of the data structure of expression S file item.

Figure 14 is that expression S2 distributes the figure of the data structure of descriptor.

Figure 15 is that expression S3 distributes the figure of the data structure of descriptor.

Figure 16 is the figure of other examples in expression 1SVFS file structure zone 108.

Figure 17 is the figure of expression the 1st ring zone 171, sliding area 172 and the 3rd configuration of ring zone 178 on information recording carrier.

Figure 18 is that the S that expression is recorded in the 2nd ring zone saves the figure of the data structure of descriptor from damage.

Figure 19 is that the file structure that expression is recorded in the 3rd ring zone is the figure of the data structure of S filec descriptor.

To be expression distribute descriptor and S3 to distribute the figure of the explanation of the bit in the territory of length of expansion area of descriptor to being recorded in expression S2 to Figure 20.

Figure 21 is the figure of structure of the infromation recording/reproducing apparatus 1600 of expression embodiment of the present invention.

Figure 22 is the process flow diagram of the program of presentation format processing.

Figure 23 is the figure of the data structure of the information recording carrier after the presentation format processing.

Figure 24 is the process flow diagram of expression file logging handling procedure.

Figure 25 is the process flow diagram of the program of expression file reproduction processing.

Figure 26 is that expression uses the record of historical bit of the present invention to wipe the process flow diagram of handling procedure.

Figure 27 is that expression utilizes the file logging used historical bit of the present invention to wipe the figure that handling procedure carries out the example in the zone that file logging wipes.

Figure 28 is the figure of the data structure of information recording carrier after the presentation format processing.

Figure 29 is the figure of the data structure of back, information recording carrier in the information recording carrier of representing after file is recorded to format processing shown in Figure 28.

Figure 30 is that the anastomose property inspection of expression UDF volume structure and SVFS volume structure is handled and the process flow diagram of the program that the anastomose property inspection of the file structure of the file structure of UDF and SVFS is handled.

Figure 31 is that expression has been write down and comprised core set file and the superset file figure in the data structure of the information recording carrier of interior file.

Figure 32 is the figure that the expression catalogue constitutes.

Figure 33 is that expression has been write down and comprised core set file and the superset file process flow diagram in the production process of the information recording carrier of interior file.

Embodiment

Below, with reference to the description of drawings embodiments of the present invention.

Imported Specific Volume and File Structure (certain volume and file structure below are designated as SVFS) file system among the present invention as new file system.The SVFS file system is used for storer or the lower equipment (for example saying civil equipment) of cpu performance.

(the 1st embodiment)

As embodiments of the present invention 1, the following describes: write down the file control information of following UDF and followed the information recording carrier of the file control information of SVFS, access method, method, the file reproduction method of this information recording carrier and the infromation recording/reproducing apparatus that realization is carried out access to this information recording carrier of this information recording carrier of access to this information recording carrier log file.

1. the data structure of information recording carrier

Fig. 1 represents the information recording carrier 100 of embodiments of the present invention.

Distributed volume space 200 in the information recording carrier 100.

Zone 101, the 104, the 3rd data area 105, the 103, the 2nd data area, the 102, the 1st data area, 1UDF volume structure zone, the 2UDF volume structure zone 106 that is preserved for system's use, the zone 107 that is preserved for system's use have been distributed in the volume space 200.With assigned region 101 1 sides in the volume space 200 as interior all sides of information recording carrier 100, with zone 107 1 sides as the outer circumferential side of information recording carrier 100.

Writing down the UDF volume structure in 1UDF volume structure zone 102 and the 2UDF volume structure zone 106.It is that 1UDF volume structure zone 102 and information recording carrier 100 outer circumferential sides are in the 2nd volume structure zone 106 that the UDF volume structure is recorded in information recording carrier 100 interior all sides, is in order to improve the reliability of data.

The information that is included in respectively in UDF volume structure and the UDF file structure provides the 1st access method to information recording carrier 100.The back is described UDF volume structure and UDF file structure in detail.

1SVFS file structure zone 108,2SVSF file structure zone 109,1SVFS file structure preparation zone 110,2SVFS file structure preparation zone 111 have further been distributed in the volume space 200.Writing down volume structure and the file structure of SVFS in 1SVFS file structure zone 108 and the 2SVFS file structure zone 109.1SVFS file structure preparation zone 110 and 2SVFS file structure preparation zone 111 are the preparation zones that are used for writing down volume structure and the file structure of SVFS.

The information that is included in respectively in SVFS volume structure and the SVFS file structure provides the 2nd access method to information recording carrier 100.The back is described SVFS volume structure and SVFS file structure in detail.Further, the details in 1SVFS file structure zone 108 is also described in the back.

The 1st zone 103 is distributed in the information recording carrier 100 as reproducing special-purpose zoning as the zoning that can write down, the 104 and the 3rd zone 105, the 2nd zone.In addition, as the 2nd section, the 3rd zone 105 is distributed in the information recording carrier 100 as the 3rd section as the 1st section, the 2nd zone 104 in zone 103.

Here, zoning be defined as can access with the 1st access method the zone, section be defined as can access with the 2nd access method the zone.

The 1st access method is provided by the information that is included in respectively in UDF volume structure and the UDF file structure.The 2nd access method is provided by the information that is included in respectively in SVFS volume structure and the SVFS file structure.

The information that is included in respectively in UDF volume structure and the UDF file structure manages the file that writes down in the information recording carrier 100, is defined as the 1st file control information.The information that is included in respectively in SVFS volume structure and the SVFS file structure manages the file that writes down in the information recording carrier 100, is defined as the 2nd file control information.

With the 1st zone 103 as can not can be according to the zone of the 1st file control information access according to the 2nd file control information access; Thus, record reproducing device can only write down, upgrades, delete user file according to the 1st file control information to the 1st zone 103.

Write down the non real-time file in the 2nd section.The non real-time file is the file that is used for realizing the function of given application.For example, the non real-time file can be to be used for realizing the playlist file that video data recording reproduces.

Write down real-time files in the 3rd section.Real-time files is the file that is used for realizing the function of given application.The real time data that real-time files also can use with the playlist file of the record-playback that is used for realizing video data.

The 1st access method is the 104 and the 3rd zone 105, access the 2nd zone, makes the 104 and the 3rd zone 105, the 2nd zone as only reproducing the method that the file that is recorded in the 104 and the 3rd zone 105, the 2nd zone promptly reproduces reserved area performance function; The 2nd access method is the 104 and the 3rd zone 105, access the 2nd zone, make the 104 and the 3rd zone 105, the 2nd zone as reproducing the file that is recorded in the 104 and the 3rd zone 105, the 2nd zone and method that can the zone of log file plays a role in the 104 and the 3rd zone 105, the 2nd zone, in this case, can be according to the 1st file control information to the change that is recorded in the 2nd file of zone in the 104 and the 3rd zone 105 or wipe and limit.

By change or the deletion that is recorded in the 2nd file of zone in the 104 and the 3rd zone 105 being limited according to the 1st file control information, can guarantee the anastomose property between UDF volume structure and the SVFS volume structure and guarantee the UDF file structure and the SVFS file structure between anastomose property.

Bright specifically, usually, the UDF file system is introduced into computer, computer user is provided the record-playback function of file.But, because the UDF file system carries out unitized processing to file, when the file that needs special configuration in specific application in order to use is write down, just problem such as suitably configuration has taken place to be difficult to realize.For example, during according to UDF file system recording of video file, continuous reproduction might be interrupted.Therefore, the 104 and the 3rd zone 105, the 2nd zone is managed as reproducing reserved area, just can limit according to of the record and the change of UDF file system to the file of the special configuration of needs according to UDF volume file structure.Can prevent the file that computer user is inadvertently changed needs special configuration thus.In addition, can therefore, record and corresponding flag information of image frame that reproduces the video file that is write down in the special-purpose zoning or simple edit file in the zoning can write down with in file logging to the 1 zone 103 according to the UDF file system.

In addition, need not manage the file that is recorded in the 1st zone 103 according to the 2nd file control information.Because the 1st zone 103 is defined as the zone that can not write down, upgrade, delete according to the 2nd file control information.Therefore, the number of files according to the management of the 2nd file control information tails off.

Record non real-time file in being defined as the 2nd section the 2nd zone 103 writes down real-time files in being defined as the 3rd section the 3rd zone 104, improve the successively reproducing performance of real-time files thus.

Though it is little that non real-time file and real-time files are compared file, the number of the non real-time file of record is more than real-time files in the information recording carrier 100 sometimes.Further, the time of access playlist file is elongated, and the time of reproducing beginning to video data will postpone, and therefore, will ask a plurality of files of access apace.Therefore, distribute, just can shorten the access time of a plurality of files by the zone that in information recording carrier 100, will stipulate posting field as the non real-time file.

In addition, the file of real-time files is big, reproduction continuously.By the zone that setting is used for writing down real-time files, can alleviate the partization of clear area, expeditiously the record-playback real-time files.

In addition, when information recording carrier 100 being carried out Constant Linear Verocity record (constant linear velocity record, CLV record), at the interior all sides and the outer circumferential side of information recording carrier 100, difference appears in the revolution of spindle motor (spindle motor).The difference of access time along with the revolution of spindle motor becomes big pro rata.In addition, when spindle motor power is very big, be used for moving that shared ratio of access time just becomes big in the driving time of shaven head (pickup).Therefore, when real-time data record is arrived the specialized range of the few outer circumferential side of information recording carrier data recording amount weekly revolutions many, spindle motor, can shorten the maximum hunting time in this specialized range.Consequently, real time data being divided into a plurality of real-time data records in specialized range the time, can a plurality of real time data successively reproducings will be divided into.

In addition, also can only define one in the volume space and reproduce special-purpose zoning.In this case, can not use the new file of UDF file system record.Therefore, can keep anastomose property between UDF file structure and the SVFS file structure.In addition, in this case, definition is the 1st section and the 2nd section in volume space, writes down the non real-time file in the 1st section, writes down real-time files in the 2nd section.Like this, can not write down zoning, can keep the anastomose property between UDF file structure and the SVFS file structure yet, further can suitably dispose non real-time file and real-time files yet even set in the volume space.

Also SVFS file structure zone can be configured in the 2nd section or in the 3rd section.Because SVFS file structure zone is the data structure of sheet form, reserve area in advance.

In addition, the 2nd section can be set in the 3rd section.This is because do not write down real-time files in distributing as the 2nd section zone.

In addition, by the 2nd section and the 3rd section zone that constitutes with reproduce special-purpose zoning equitant the time, the anastomose property inspection of UDF file structure and SVFS file structure becomes easy.

In addition, by being that unit is assigned in the volume space 190 with the 104 and the 3rd zone 105, the 103, the 2nd zone, the 1st zone with the ECC piece, it is the data recording/reproducing indication of unit that control system is just sent with the ECC piece easily to infromation recording/reproducing apparatus.This is that data are unit record with the ECC piece that is made of a plurality of sectors because in infromation recording/reproducing apparatus.

By the file structure of record SVFS, when without the UDF file build of overlapping record because problems such as defective sector can't read the time because can write down, renewal, the file of deletion record in section, the UDF file structure that can't read also can be repaired.

In addition, when the SVFS file structure is recorded in the 110 or the 2nd 1SVFS file structure preparation zone, 1SVFS file structure preparation zone 111, can further improve the reliability of file structure.

When record reproducing device can not the SVFS file structure of reading and recording in 1SVFS file structure zone 108, system can read the file structure of SVFS from 2SVFS file structure zone 109, write in the 1SVFS file structure preparation zone 110.Further, in order to represent that 1SVFS file structure zone 108 is invalid, system can write 1SVFS file structure zone 108 with 00 data.Therefore, record reproducing device is when reading the SVFS file structure, and system at first reads 00 data that write in the 1SVFS file structure zone 108, reads the file structure that writes on the SVFS in the 2SVFS file structure zone 109 then.

Further, when record reproducing device can not read the SVFS file structure of record in the 2SVFS file structure zone 109, record reproducing device reads the file structure of SVFS from 1SVFS file structure preparation zone 110, write 2SVFS file structure preparation zone 111.Further, in order to represent that 2SVFS file structure zone 109 is invalid, record reproducing device can be write 2SVFS file structure zone 109 with 00 data.Therefore, record reproducing device is when reading the SVFS file structure, record reproducing device at first reads 00 data that write in the 1SVFS file structure zone 108, next reads 00 data that write in the 2SVFS file structure zone 109, reads the SVFS file structure that writes in the 1SVFS file structure preparation zone 110 again.

Fig. 2 has represented bibliographic structure.In information recording carrier 100, write down the file of managing by bibliographic structure as shown in Figure 3.

Comprise SPECIFIC catalogue and USR catalogue in the bibliographic structure.The SPECIFIC catalogue is the catalogue of the employed file of application of recording prescribed, and the USR catalogue is the catalogue of the data file of recording user.

PLAYLIST catalogue and STREAM catalogue have further been comprised in the bibliographic structure.PLAYLIST catalogue and STREAM catalogue have been write down in the SPECIFIC catalogue.Write down the data file of the controls such as appointment of the reproduction section that is used for carrying out the video-audio data in the PLAYLIST catalogue, for example, write down playlist file PL_001.PLT.Write down the real-time files of employed image data of playing list and voice data in the STREAM catalogue, for example, real-time files RT_001.RTS.

Can write down the document that makes in the USR catalogue, backup file that also can recording user.For example, file FILE-A is recorded in the USR catalogue.

Fig. 3 has represented the UDF volume structure of corresponding bibliographic structure shown in Figure 2 and file structure and SVFS volume structure and the SVFS file structure of UDF.

Among Fig. 3, represent to have volume structure 80 as the UDF volume structure.In volume structure 80, comprise information recording carrier as the information that involves in capable logical process.

Include file set descriptor 81, file item 82, file item 91, USR catalogue 92, file item 93, FILE-A file 96 in the file structure of UDF.File set descriptor 81 comprises a plurality of files is managed required information as file set.File item 82 comprises the information of representing root directory.As shown in Figure 1, file set descriptor 81, file item 82, file item 91, USR catalogue 92, file item 93 and FILE-A file 96 have been write down in the 1st zone 103.

Further comprise in the UDF file structure: file item 83, SPECIFIC catalogue 84, file item 85, PLAYLIST catalogue 86, file item 87, file item 88, STREAM catalogue 89, file item 90, PL_001.PLT file 94.PL_001.PLT file 94 is playlist file.As shown in Figure 1, these files 83～90 and PL_001.PLT file 94 have been write down in the 2nd zone 104.As shown in Figure 1, write down RT_001.RTS95 in the 3rd zone 105.RT_001.RTS file 95 is real-time files.

In addition, by file item catalogue is write down, manages as file.

The details of these data structures that comprise in UDF volume structure and the UDF file structure will be described later.

In Fig. 3,, represented S Volume Descriptor 151 as the volume structure of SVFS.In S Volume Descriptor 151, comprise information recording carrier as the information that involves in capable logical process.

Comprise in the SVFS file structure: record descriptor 152, S file item 153, S file item 154, S file item 155, S file item 157, S2 distribute descriptor 158, S file item 159, S file item 160 and S3 to distribute descriptor 161.The details of these files that comprise in the SVFS file structure will be told about in the back.

Fig. 4 has represented the details of UDF volume structure.

The UDF volume structure comprises extended area beginning descriptor 21, the expression formative NSR Volume Descriptor 22 of ECMA167, extended area terminal descriptor 23.Extended area beginning descriptor 21, NSR Volume Descriptor 22, extended area terminal descriptor 23 are included in the volume identification row.

The volume structure of UDF further comprises: base volume descriptor 24, expression can write down the distribution locations of zoning zoning descriptor 25, zoning descriptor 26 that the distribution locations of special-purpose zoning is reproduced in expression, can write down zoning and reproduce the logical volume descriptor 27 of exclusive district check off combinator volume space.Base volume descriptor 24, zoning descriptor 25, zoning descriptor 26, logical volume descriptor 27 are included in the Volume Descriptor row.

In addition, the UDF volume structure further comprises: the expression CD is saved the starting point Volume Descriptor pointer 29 that the logical volume of state is saved descriptor 28 from damage, represented the Volume Descriptor column position from damage.

It is at least 2 sectors in the sector shown in-256, will begin access from the sector shown in these sector numbers so read the record reproducing device of UDF file structure that starting point Volume Descriptor pointer 29 is defined as the sector shown in the sector that is recorded in sector number 256, the final sector number and final sector number.

Fig. 5 has represented the data structure of UDF file item.

File item comprises: the field of expression descriptor tag, the expression kind of document is the field of file type, the byte number of expression file is the field of message length, the rise time of expression file is the field of access date time, the expression document change time is promptly revised the field of time on date, the field of the required expression setter ID of the manufacturer of the file system make file item is installed for identification, expression distributes the field of descriptor length, be used for representing the field of distribution descriptor of the record position of data.When the field of expression descriptor tag was the ID261 of file item, system just was identified as these data structures the file item of UDF.

Fig. 6 has represented the data structure of the distribution descriptor of UDF.

The distribution descriptor comprises the field of representing extension length and the field of representing expanding location.Expanding location is represented by the starting position of expansion.Expansion is a continuous zone of record specific data.

When data are divided into two expansions and write down, comprise two fields of distributing descriptors of expression in the file item.The file item size is smaller or equal to a sector, and file item is from the beginning opening entry of sector.

When the size of file or catalogue is very little, be included in the data that also can write down this document in the last field in the file item.For example, the sector is the data of 2K byte (KB), file when being 1KB, and the parameter that is recorded in usually in the file item is 176B, so the data of this document are recorded in the last field of file item.

Fig. 7 has represented the data structure of UDF file identification descriptor.

The file identification descriptor comprises: the field of expression descriptor tag, expression catalogue relevant information are that the position that field, the field of expression filename length, the expression of file attributes is used for managing the file item of this document is the field of ICB, the field of expression filename.When descriptor tag was represented the ID257 of file identification descriptor, system just was identified as these data structures the file identification descriptor of UDF.

Fig. 8 has represented 1SVFS file structure zone 108 in detail.In 1SVFS file structure zone 108, distributed the 1st ring zone 70 and sliding area 72.

4 ECC pieces have been distributed in the 1st ring zone 70.One in 4 ECC pieces is ECC piece 71.

32 the 2nd ring zones have been distributed in the sliding area 72.32 the 2nd parts of encircling in the zone are the 2nd ring zones 73～76.In each of the 2nd ring zone is allocation unit with two ECC pieces all, has distributed 8 ECC pieces.Be distributed in 32 the 2nd ring zones and all comprising the ECC piece 79 that constitutes by effective two ECC pieces in each the ECC piece.

Be distributed in the effective ECC piece 71 in the 1st ring zone 70 and writing down the SVFS volume structure.Writing down the file structure of SVFS in the ECC piece 79.Be recorded in the 1st ring zone, the file structure of SVFS is recorded in the 2nd ring zone by volume structure, just can increase the number of times rewritten of file structure SVFS.Therefore, in the less information recording carrier of the number of times rewritten of sector,, also can avoid specific sector to cause becoming the problem of defective sector owing to physics fatigue even become under the situation how at the rewriting number of times of the file control information that is accompanied by file logging.Consequently, can improve the reliability of the fewer information recording carrier of the number of times rewritten of sector.

In addition, be recorded in the SVFS volume structure in the ECC piece and comprise sequence number.When every occurrence record was worked, sequence number just added 1.Therefore, the ECC piece that has write down the SVFS volume structure that comprises maximum sequence number is effective ECC piece.

Fig. 9 has represented the example of the 1st ring zone and sliding area continuous dispensing.

The 1st ring zone 70 is compared with the situation of discontinuous distribution with the situation of sliding area 72 continuous dispensing, and the former can read document structure information soon.Rewriting number of times is in 50 times the information recording carrier, when using ring type recording method described later, if the rewriting deficiency of SVFS file structure 200 times, the 1st ring zone 70 and the regional continuous dispensing of the 2nd ring of having distributed effective ECC piece, the document structure information of reading and recording in 12 ECC pieces that therefore just can be continuous.

Along constant direction more new record ECC piece, when arriving the terminal point in the 2nd ring zone, carry out record since the beginning in the 2nd ring zone so that the record direction in the 2nd ring zone becomes ring-type, carry out file logging in this way.

By rewriting tired the 2nd ring zone that causes stipulating to use the time, with file logging next the 2nd ring zone in the sliding area.For variation has taken place in the position of expressing the 2nd ring zone, the SVFS volume structure that writes down in the 1st ring zone is updated.

Along constant direction more new record ECC piece, when arriving the terminal point in the 1st ring zone, carry out record since the beginning in the 1st ring zone, make the record direction in the 1st ring zone become ring-type with this, carry out file logging in this way.Like this, by carrying out the ring-type record of stratification, even the data recording increased frequency in the 2nd ring zone, also new record more.

For example, rewrite number of times and be in 50 times the CD, under the situation of the update times of considering the 2nd ring zone, can carry out 50 * 4 file loggings.In addition, owing to distributed 32 the 2nd ring zones in the sliding area, total can be carried out the record of 50 * 4 * 32 file structures.

When finding the effective ECC piece in the 2nd ring zone, read 4 ECC pieces from the 1st ring zone, therefrom detect effective ECC piece and obtain the position in the 2nd ring zone, read 8 ECC pieces from the 2nd ring zone, therefrom find effective 2 ECC pieces.Therefore, the time for reading of data is shorter than the time of reading whole sliding areas.

For example, in Fig. 8 and the embodiment shown in Figure 9, the ring type record is corresponding with " record unidirectional in the data area repeatedly and write down repeatedly file is unidirectional according to the end of record (EOR) positional information ".

Figure 10 has represented to be recorded in the data structure of the S Volume Descriptor of the SVFS in the 1st ring zone 70 shown in Figure 8.The S Volume Descriptor is recorded and narrated the SVFS volume structure.

The S Volume Descriptor comprises compares the positional information of rewriting the little section of frequency or the positional information of ring zone and sliding area with file location information.Record the 1st ring zone and the 2nd ring zone by information that update frequency is few and the many unpacks of update frequency, carry out the ring type record efficiently.

Not information among the information that information recording carrier write down when the S Volume Descriptor was used for writing down logical formatting with the definition of UDF volume structure.

The S Volume Descriptor comprises the field of presentation logic form name and the field of expression version number, is used for representing that volume structure is a SVFS version 1.0.The S Volume Descriptor can further comprise: the field that has been used for representing to write down the record unit of the ECC piece of record in the field, expression the 2nd ring zone of field, expression the 2nd ring zone length of field, the expression sliding area length of the record unit of the ECC piece of record in the field, expression the 1st ring zone of field, expression the 1st ring zone length of field, expression access type of file label of CD of S Volume Descriptor.Represent that respectively the field of the record unit of the ECC piece of record in the record unit, sliding area length, the 2nd ring zone length, the 2nd ring zone of the ECC piece of record in the 1st ring zone length, the 1st ring zone represents by ECC piece number.

The S Volume Descriptor further comprises: the field of the quantity of the section that the field of expression sequence number, the field that is used for representing the 2nd ring zone number in effective the 2nd ring zone, expression are cut apart according to purposes, represent the position of each section field, represent the length of each section field, represent the field of the purposes of each section.When upgrading the S Volume Descriptor, sequence number is added 1 at every turn.The ECC piece that has write down the S Volume Descriptor that comprises maximum sequence number is effective ECC piece.The purposes of each section for example is 3 kinds of (1. records of the file that manages, do not manage according to the 2nd file control information according to the 1st file control information; 2. the record of the non-real-time data that manages according to the 1st file control information and the 2nd file control information; And the record of the real time data that 3. manages according to the 1st file control information and the 2nd file control information).

Figure 11 represents to be recorded in the file structure of the SVFS in the 2nd ring zone shown in Figure 7.The SVFS file structure comprises: record descriptor, S file item table, be used for representing that the S2 that is recorded in the record position of the file in the 2nd section distributes descriptor table, is used for representing that the S3 that is recorded in the record position of the file in the 3rd section distributes descriptor table.

Distributing descriptor and S3 to distribute descriptor to separate separately from the S file item S2 makes shown in the reasons are as follows of table.

1 file needs 1 S file item.But, when the superimposed record of file, need 2 S2 to distribute descriptor at 1 S file item; When real-time files is dispersed into a plurality of extension record, need a plurality of S3 to distribute descriptor at 1 S file item.

In addition, by managing the distribution descriptor of each section with sheet form, it is easy that its advantage is that the management of the white space in each section becomes.For example, for the successively reproducing real-time files, each continuum of having write down real-time files need reach prescribed level.But the quantity that is used for managing the distribution descriptor of real-time files can not become a lot.Therefore, do not need to be used for the bitmap (bitmap) in management default space.In addition, write down the file beyond the playlist file such as thumbnail in the PLAYLIST catalogue, the quantity of the file of record becomes for a long time in the 2nd section, only the record space bit map that is used for managing the white space in the 2nd section.Therefore, compare with the 3rd section, the 2nd section size is littler, therefore, can make the size of bitmap very little.

Figure 12 represents the data structure of record descriptor.

Record descriptor comprises: the field of representing writing time, the field of expression setter ID, the field of expression hop count, the field of representing the 2nd section final entry address, the field of representing the 3rd section final entry address, the field of expression sequence number, the field of representing the length of specific UDF file structure, the field of representing the position of specific UDF file structure, the field of the length of expression S file item table, expression S2 distributes the field of the length of descriptor table, expression S3 distributes the field of the length of descriptor table.

When upgrading the S file structure, sequence number is added 1 at every turn.The ECC piece that has write down the S file structure that comprises maximum sequence number is effective ECC piece.

The field that is used for representing writing time has represented that the data of record descriptor generate constantly.In the UDF volume structure contained logical volume save from damage descriptor writing time field also the presentation logic volume data of saving descriptor from damage generate constantly.Distinguish anastomose property between UDF volume structure and the SVFS volume structure and the anastomose property between UDF file structure and the SVFS file structure according to these temporal informations.When these temporal informations equate, be judged as between UDF volume structure and the SVFS volume structure and between UDF file structure and the SVFS file structure and have anastomose property.

The field of expression setter ID is represented to have developed these file structures is carried out the more ID of the manufacturer of the file system of new record.By in file structure, comprising the field of expression setter ID, also can easily solve when aspect compatible, going wrong even make.In addition, file structure can not be written, and is to use ring type to write down more new record, and therefore, the historical record in past remains, and helps to utilize historical record to solve compatibling problem.

The field of expression hop count is used for representing the hop count cut apart according to purposes.

The field of representing the 2nd section final entry address is used for representing the final address in the zone of the data of record at last.When system in the 2nd section during record data, system carries out data recording to the direction retrieval white space greater than this final entry address.When the retrieval of white space reached the 2nd section terminal point, system carried out data recording from the 2nd section beginning retrieval white space.Therefore, can prevent that locking system is to specific region record repeatedly.

The field of representing the 3rd section final entry address is used for representing the final address in the zone of the data of record at last.When system in the 3rd section during record data, system carries out data recording to the direction retrieval white space greater than this final entry address.When the retrieval of white space reached the 3rd section terminal point, system carried out data recording from the 3rd section beginning retrieval white space.

When appending type information recording carrier record data, the final entry address of the 2nd section final entry address and the 3rd section can be as discerning the information of the position of opening entry next time.

The field of representing the length of specific UDF file structure and position has been represented the record position information of the UDF file structure that the SPECIFIC catalogue is following.Because a plurality of files by SVFS management are opened reproduction simultaneously, manage the positional information of the UDF file structure of these files by summary record, can shorten the time of opening these files according to the UDF file system.When having write down real-time files according to the SVFS file system in the 3rd section, the UDF file structure of managing this real-time files is recorded in the 2nd section.When the zone of having write down the UDF file structure caused the UDF file structure to read because of scratch, the record position of UDF file structure recorded in the SVFS file structure, thus, no longer needed to review the UDF file structure, and it is easy that the reparation of UDF file structure becomes.In addition, specific UDF file structure is signed in in the SVFS file structure as specific file, also can obtain effect same.

Distribute each field of the length of the length of the table of descriptor, table that S3 distributes descriptor, starting position of each table as can be known according to the length of the table of representing the S file item respectively, S2.

Figure 13 represents the data structure of S file item.

In the table of S file item, at each file of record in the 2nd section and the 3rd section or each catalogue record the S file item.

The S file item comprises the field of representing filename length and the field of representing filename.The field of expression filename is represented filename or the directory name of 20Byte.The application software that is used for the record-playback real-time files, filename is named according to predetermined rule, therefore, even the length of restriction filename can not produce inconvenience yet.In addition, the length by the restriction filename can reduce S file item size.

The S file item further comprises: the field of the field of an expression brother numbering, expression child item numbering, the field of expression father and mother item numbering.A so-called brother numbering, child's item numbering, the expression of father and mother's item numbering be hierarchical relationship in the bibliographic structure.Numbering is that the beginning from the table of S file item begins to compose in order to each S file item.Brother's numbering is expression and the item numbering of the S file item of the file shown in the S file item or the catalogue file that belongs to a catalogue or catalogue.Child's item numbering is the item numbering of the S file item of the file of expression following one deck of being positioned at the catalogue shown in the S file item or catalogue.Father and mother's item numbering is the item numbering of S file item of the catalogue of the expression last layer that is positioned at file shown in the S file item or catalogue.

The S file item further comprises: the field of the item numbering that the field of the field of expression file type, expression data transfer rate, expression distribute descriptor.The field of expression file type represents that this document is non-real-time files, real-time files or catalogue.The data transfer rate of real-time files when the field of expression data transfer rate represents that this document is real-time files.Expression distributes the field of the item numbering of descriptor to represent to be used for to represent that the S2 of the record position of this document distributes the item of descriptor to number when this document is non-real-time files.When being real-time files, this document then represents: be used for representing the item numbering that the S3 of the record position of this document distributes descriptor.

Figure 14 represents that S2 distributes the data structure of descriptor.

S2 distributes the data structure of descriptor to adopt sheet form.S2 distribute in the table of descriptor at each file of record in the 2nd section or each catalogue record S2 distribute descriptor.

S2 distributes descriptor to comprise: the field of the item numbering of the field of the field of expression extension length, expression expanding location, the distribution descriptor of expression preparation.The field of the field of expression extension length and expression expanding location is represented the record position of the expansion of this document.When this document was non-real-time files, the field of the field of expression extension length and expression expanding location was by 2 records, so that guarantee the reliability of data.The field of the item numbering of the distribution descriptor of expression preparation represents to be used for to represent the item numbering that the S2 of record position of the data of dual logging distributes descriptor.

Figure 15 represents that S3 distributes the data structure of descriptor.

S3 has distributed in the table of descriptor at each file logging of record in the 3rd section S3 to distribute descriptor.

S3 distributes descriptor to comprise: the field of the item numbering of the field of the field of expression extension length, expression expanding location, the distribution descriptor of expression preparation.The field of the field of expression extension length and expression expanding location is represented the record position of the expansion of this document.When this document was real-time files, for data are separately recorded in a plurality of expansions, record was used for representing that the next S3 that expands distributes a numbering of descriptor in the field that the item of the next distribution of expression descriptor is numbered.

In the SVFS file structure, for example, suppose that record descriptor length is that 64Byte, S file item length are that 32Byte, S2 distribution descriptor and S3 distribution descriptor length are 10Byte.When 1000 real-time files of record and 1000 playlist file, S file item table size is a little less than the 64KB, and S2 distributes descriptor table owing to comprised recording section 2 times, and size is a little less than the 20KB, the table size that S3 distributes descriptor expansion add up to 4500 the time, a little less than 44KB.1 ECC piece is in the information recording carrier of 64KB, can use 2 ECC pieces to write down the SVFS file structure.In addition, under the situation of the number of files that restriction is write down, also can use public sheet to represent that S2 distributes descriptor and S3 to distribute descriptor.Like this, be the sector form for the UDF file structure, because the SVFS file structure is that its data structure is compacter for each management information records the information in sheet form in the table.

In addition, can be by restriction according to the size in the zone of UDF file structure record data, use to rely on and linearly put the defect management method that (linear placement) mode or the defined backing sheet of UDF Revision2.0 realize and also can reduce to replace the zone.This is because the SVFS file system by carrying out checking, can be avoided the defect area record data with in 2 sections of the data recording to the time; With in 3 sections of the data recording to the time,, can avoid detected in advance defect area record data by skipping record.

Like this,, both guaranteed compatible and record compatibility, and can improve real-time again, improve data reliability with the reproduction of original UDF file system by importing the SVFS file system.In addition, if the total number of files of using in the given application is defined as 2000, the sum of the expansion of real-time files and is defined as 4500, then the SVFS volume structure is that 1 ECC is that 2 ECC are with interior size with interior size, SVFS file structure, therefore, the record-playback time also is out of question when carrying out 2 records even the use ring type writes down.

Figure 16 represents other examples in 1SVFS file structure zone 108.This example has represented to deal with the 1SVFS file structure zone 108 of 10,000 above files.3 zones (the 1st ring zone, the 2nd ring zone, the 3rd ring zone) have been distributed in the 1SVFS file structure zone 108, by volume structure being assigned to the 1st ring regional record, file structure being assigned to the 2nd ring zone and the 3rd ring regional record, carry out record-playback efficiently.In addition, save S from damage descriptor for simplicity below and describe, but in the definition of ECMA167, saving descriptor definition from damage is volume structure as file structure.

The 1st ring zone 171, sliding area the 172, the 2nd ring zone, the 3rd ring zone 178 have been distributed in the 1SVFS file structure zone 108.The 1st ring zone 171 is made of 4 ECC pieces, and sliding area 172 is made of 64 the 2nd ring zones.

The part in 64 the 2nd ring zones is the 175, the 2nd ring zones 176, the 174, the 2nd ring zone, the 173, the 2nd ring zone, the 2nd ring zone.In order to open the management of closing, 2 times in sliding area 172, have been distributed to the 2nd ring zone of the number of example shown in Figure 8.Each the 2nd ring zone serves as the record unit with 1 ECC piece, is made of 4 ECC pieces.

In the 1st ring zone, effectively the ECC piece is represented the position in effective the 2nd ring zone 173 in the sliding area.The position of the effective coverage 179 in the effective ECC piece 177 in the 2nd ring zone in data representation the 3rd ring zone 178 of record.

Data record ringwise in the 173, the 3rd ring zone 178, the 171, the 2nd ring zone, the 1st ring zone.After the regional rewriting of the 2nd ring causes the regional fatigue of the 2nd ring, use the regional method for recording data again of next the 2nd ring with identical with reference to the illustrated method of Fig. 8.

After number of files increased, file control information can hold any more in several ECC pieces, becomes dozens of ECC piece.For example, when file control information is per 1 file when 42B (byte) is arranged,, need about 38 ECC pieces in order to manage 60,000 files.In this case, when log file management information in the 2nd ring zone, the 2nd ring zone just needs 152 ECC pieces, in order to find the management information of effective document, has to read 152 ECC pieces.If be provided with 3 loop record zones, the 2nd the ring zone in management accounts the zone of file control information, then read 4 ECC pieces in the 2nd ring zone, the beginning in access the 3rd ring zone, as long as read 38 ECC pieces, so reading of data more quickly.

Figure 17 represents the 1st ring zone 171, sliding area 172 and the 3rd configuration of ring zone 178 on information recording carrier.

For the state that will be used for representing file control information is that the information of saving from damage of open mode or closed condition records the 2nd ring zone, when the size of setting the 3rd ring zone makes half of rewriting number of times in the 2nd ring zone identical with the rewriting number of times in the 3rd ring zone, will reduce the zone and waste.When the size in the 2nd ring zone was 64 ECC pieces, the size in the 3rd ring zone was 32 * 38 ECC pieces.

Like this, the posting field of file structure is assigned to the 2nd ring zone and the 3rd ring zone, lump together, during with 3 ring region allocation record data, even the number of files increase also can be carried out loop record effectively with the 1st ring zone.

In addition, the effective ECC piece in the 1st ring zone, the 2nd ring zone, the 3rd ring zone is the ECC piece that has write down peaked sequence number, and this is identical with example shown in Figure 8.

In addition, in the illustrated example area configurations then the 2nd is encircled in the 3rd ring zone, the 3rd ring area configurations also can be obtained effect of the present invention in separate areas.

Figure 18 represents to be recorded in the data structure that the S in the 2nd ring zone saves descriptor from damage.The SVFS file structure that the 2nd ring writes down in the zone has S to save two kinds of descriptor and S filec descriptors from damage.

S saves descriptor from damage and comprises: the field of representing writing time, the field of expression setter ID, open and close management fields, the field of expression hop count, the field of representing the 1st section final entry address, the field of representing the 2nd section final entry address, the field of representing the 3rd section final entry address, the field of expression sequence number, the field of representing the 3rd ring zone length, the field of representing the record unit in the 3rd ring zone, the field of representing the 3rd ring zone number, the field of representing the length of specific UDF file structure, the field of representing the position of specific UDF file structure, the field of position of representing the 2nd section space bit map, the field of length of representing the 2nd section space bit map.

When each renewal S saves descriptor from damage, sequence number is added 1.Having write down the ECC piece that the S that comprises maximum sequence number saves descriptor from damage is effective ECC piece.

The field that is used for representing writing time has represented that the data of this descriptor generate constantly.The field of expression setter ID is represented to have developed these file structures is carried out the more ID of the manufacturer of the file system of new record.The field of expression hop count is used for representing the hop count cut apart according to purposes.

The field of representing the 1st section final entry address is used for representing the final address in the zone of the data of record at last.When according to the UDP file system with data recording in appending the type disk time, infromation recording/reproducing apparatus does not need to the positional information of questionnaire registrations such as CD drive according to record position, by reading the field that is used for representing the final entry address in the 1st section, just can obtain the positional information of expression data recording position.

The field of final entry address of representing the 3rd section of the 2nd section the field of final entry address and expression has also been represented the final address in zone of the data of last record in addition.

When system in the 2nd section or the 3rd section during record data, system carries out data recording to the direction retrieval white space greater than this final entry address.When the retrieval of white space reached the terminal point of the 2nd section or the 3rd section, system carried out data recording from the beginning retrieval white space of the 2nd section or the 3rd section.Therefore, can prevent that locking system is to specific region record repeatedly.

The field of representing the length of specific UDF file structure and position has been represented the record position information of the UDF file structure under the SPECIFIC catalogue.

Open and close management fields and play the effect of saving field from damage that the ECMA167 logical volume is saved descriptor from damage.That is, when writing down some data in section, before record data, the state of the data that write down in record 1,1 this field of expression is an open mode earlier.Need to guarantee under the situation of data recording normal termination in this information recording carrier that opening of SVFS closed management fields and UDF save field from damage and upgrade, the state that makes recorded data is a closed condition at information recording carrier At time of eject etc.

Save in the descriptor record from damage and open information by stopping at the logical volume that comprises in the UDF file structure, the rewriting number of times that can make logical volume save descriptor from damage reduces by half.

In addition, generally, the UDF file system is carried out the rewriting that logical volume is saved descriptor from damage when each updating file.Management is opened, is closed in the SVFS file system, and with the information recording carrier At time of eject, more new logical volumes is saved descriptor from damage.In this case, can further reduce the rewriting number of times that logical volume is saved descriptor from damage.Save information from damage by record in the SVFS file structure, even under situation about only handling according to the SVFS file structure, that also can know the data that write down in the information recording carrier saves state (open mode, closed condition) from damage.

Also can before log file, the information of saving from damage that comprises in the UDF file structure be changed to open mode; After log file or behind the record of file and its management information, the information of saving from damage that comprises in the UDF file structure is changed to closed condition.Also can before log file, the information of saving from damage that comprises in the SVFS file structure be changed to open mode; After log file or behind the record of file and its management information, the information of saving from damage that comprises in the SVFS file structure is changed to closed condition.

In addition, in general, reproduce the UDF that writes down in the special-purpose zoning and save information from damage and do not rewrite, but also can before log file, the information of saving from damage that comprises in the UDF file structure be changed to open mode.The UDF file structure can be do not upgraded when the user not thinks need reproduce file according to the UDF file structure time, therefore, the update times of UDF file structure can be reduced.This be because, in the time of in the user is inserted into this information recording carrier by the system of UDF file system control, even without upgrading the UDF file structure, since the UDF file structure save the information representation open mode from damage, therefore, when according to UDF volume structure or file structure access, can know that the record of data does not have normal termination.

The field of representing the 3rd ring zone length is represented the positional information of the file structure that writes down in the position in the 3rd ring zone and the 3rd ring zone.The field of representing the record unit in the 3rd ring zone is represented the record unit of the management information of the file that writes down in the 3rd ring zone.

The field of position of representing the space bit map of the 2nd section of the 2nd section the field of length of space bit map and expression represents to be used for to represent the position of space bit map of the 2nd section white space.Owing to the increase of the expansion quantity in the 2nd section along with the number of files of record in the 2nd section increases, S2 distributed whole S2 in the descriptor table to distribute descriptors to retrieve to investigate white space become difficult to achieve.Therefore, the usage space bitmap comes the management default space.In addition, the 3rd section expansion quantity increases and causes for the management default space, also needing bitmap under the situation of white space dispersion.Under these circumstances, S saves the field of position that descriptor also can further comprise the space bit map of the 3rd section of the field of length of space bit map of the 3rd section of expression and expression from damage.

Figure 19 represents that the file structure that is recorded in the 3rd ring zone is the data structure of S filec descriptor.

The S filec descriptor comprises: the field that the field that the field of the length of expression S file item table, expression S2 distribute the length of descriptor table, expression S3 distribute the length of descriptor table.Then these fields further comprise: the field that the field of expression S file item table, expression S2 distribute descriptor table, the field that expression S3 distributes descriptor table.

Figure 20 represents the explanation to the bit in the field of the length of the expansion area that is recorded in expression S2 distribution descriptor and S3 distribution descriptor.High-order 1bit is historical bit.Historical bit is only saved from damage under the deleted situation of file that the represented S filec descriptor of descriptor managed and catalogue at the S of the previous generation in the 2nd ring zone and is set at 1.

In an embodiment of the invention, as Fig. 4～7,10～15 and Figure 18～20 shown in, the information correspondence that has comprised UDF volume structure and UDF file structure " provides the 1st file control information of the 1st access method ", and the information correspondence that has comprised SVFS volume structure and SVFS file structure " provides the 2nd file control information of the 2nd access method ".But, these information that write down in the information recording carrier 100 be not limited to Fig. 4～7,10～15 and Figure 18～20 shown in content.As long as the information that is write down in the information recording carrier 100 possesses the function of above-mentioned " the 1st file control information of the 1st access method is provided " and " the 2nd file control information of the 2nd access method is provided ", can be any information.

2. the structure of infromation recording/reproducing apparatus

Figure 21 represents the structure of the infromation recording/reproducing apparatus 1600 of embodiment of the present invention.

Infromation recording/reproducing apparatus 1600 is handled in format, file logging is handled under the situation about being performed, and plays a role as the information record carrier of recorded information in information recording carrier 100.In addition, infromation recording/reproducing apparatus 1600 is handled at file reproduction under the situation about being performed, and plays a role as the information reproduction apparatus that the information of record in the information recording carrier 100 is reproduced.

Infromation recording/reproducing apparatus 1600 comprises: systems control division 1601, I/O bus 1621, CD drive 1631, be used for the record of input file or reproduction command information input block 1632, the tuner 1635 that receives TV broadcasting, the scrambler 1633 that is used for the AV signal of tuner selected songs is encoded, the demoder 1634 that the back AV signal of encoding is decoded, be used for monitoring the TV1636 of the AV signal of demoder output.

Systems control division 1601 is realized by means of the control program of system or the microprocessor that comprises operand store.Particularly, systems control division 1601 comprises UDF processing unit 1602, SVFS processing unit 1603, UDF storer 1607, SVFS storer 1608.Systems control division 1601 further comprises data record unit 1605, record buffer memory 1610.Systems control division 1601 further comprises data reproduction unit 1606, reproduces buffer memory 1611.

1602 pairs of UDF processing units are handled in UDF volume structure and file structure that UDF launches in storer 1607.When format, UDF processing unit 1602 generates volume structure and necessary file structure; When file be recorded, upgrade, when deleting, 1602 generations of UDF processing unit, change, deleted file management information.In addition, UDF processing unit 1602 generates the UDF file structures, is used for file under the SPECIFIC catalogue of management accounts in the continuum of the 2nd section and the 3rd section.

1603 pairs of SVFS processing units are handled in SVFS volume structure and file structure that SVFS launches in storer 1608.When format, SVFS processing unit 1603 generates volume structure and necessary file structure; When file be recorded, upgrade, when deleting, 1603 generations of SVFS processing unit, change, deleted file management information.

Data record unit 1605 sends instruction to CD drive 1631, so as with in the record buffer memory 1610 record data recording in the particular sector of information recording carrier 100.

Data reproduction unit 1606 sends instruction to CD drive 1631, so that reading of data is transferred to reproduction buffer memory 1611 from the particular sector of information recording carrier 100.

Utilize above structure to realize the record-playback program.In addition, in personal computer system, do not need to comprise SVFS processing unit 1603 and SVFS storer 1608.In addition, in civil equipment such as video recorder, also can be with the simple and easy processing unit of UDF processing unit 1602 as the file under the treatment S PECIFIC catalogue.

3. format is handled

The program of Figure 22 presentation format processing.Progressively the program of handling is formatd in explanation below.

Step S401: the capacity of the data that systems control division 1601 considerations will be write down, but determine to be used for distributing the position of the write down zoning that plays a role as posting field.After having determined distribution locations, handle entering step S402.

Step S402: systems control division 1601 is considered to put rules into practice and is used the capacity of required data, determines as the distribution locations of reproducing the special-purpose zoning of reproduction that reserved area plays a role.After having determined distribution locations, handle entering step S403.

Step S403: systems control division 1601 generates the UDF volume structure, so as to make can write down zoning and reproduce special-purpose zoning effective.After generating the UDF volume structure, handle entering step S404.

Step S404: CD drive 1631 records information recording carrier with the UDF volume structure that generates.After the UDF volume structure is recorded information recording carrier, handle entering step S405.

Step S405: systems control division 1601 is generated to the UDF file structure till the root directory.After generating the UDF file structure, handle entering step S406.

Step S406: CD drive 1631 records information recording carrier 100 with the UDF file structure that generates.After the UDF file structure is recorded information recording carrier, handle entering step S407.

Step S407: systems control division 1601 distributes the 1st section, makes that can to write down zoning and the 1st section overlapping.After having distributed the 1st section, handle entering step S408.

Step S408: systems control division 1601 is considered the capacity of the employed non real-time file of given application, distributes the 2nd section in reproducing special-purpose zoning.After having distributed the 2nd section, handle entering step S409.

Step S409: systems control division 1601 is considered the capacity of the employed real-time files of given application, distributes the 3rd section in reproducing special-purpose zoning.After having distributed the 3rd section, handle entering step S410.

Step S410: systems control division 1601 generates the S Volume Descriptor, so that make the 1st section, the 2nd section, the 3rd section effectively.In addition,, determine the distribution locations of the 1st ring zone and sliding area, be recorded in the S Volume Descriptor in order to carry out loop record.After generating the S Volume Descriptor or write down in the S Volume Descriptor after the positional information of the 1st ring zone and sliding area, processing entering step S411.

Step S411: CD drive 1631 records the 1st ring zone with the SVFS volume structure.After the SVFS volume structure being recorded the 1st ring zone, handle entering step S412.

Step S412: systems control division 1601 generates and comprises the S file item of root directory in interior SVFS file structure.After generating the SVFS file structure, handle entering step S413.

Step S413: CD drive 1631 records the 2nd ring zone with the SVFS file structure.After the SVFS file structure being recorded the 2nd ring zone, processing finishes.In addition, owing to exist defective sector to cause file structure can't record for the 2nd when zone ring, record next zone in the 2nd ring zone.If the moving recording position still can not record in the 2nd ring zone, then file structure is recorded next and the 2nd encircle in zone.In this case,, the S Volume Descriptor is upgraded, handle and enter step S410, enter step S411 then in order to represent to have used the 2nd new ring zone.

The data structure of information recording carrier after the processing of Figure 23 presentation format.By being carried out above-mentioned format, " sky " information recording carrier handles the information recording carrier that can have data structure shown in Figure 23.

4. file logging is handled

Figure 24 represents the file logging handling procedure.Supporting paper recording processing program progressively below.

Step S501: systems control division 1601 changes the logical volume that comprises the information of opening and saves descriptor from damage, makes the state of the logical volume that manages according to the UDF volume structure become open mode.Having changed after logical volume saves descriptor from damage, handle entering step S502.

Step S502: systems control division 1601 judges that the file that should write down is employed file of given application or user's data file.Systems control division 1601 can judge whether it is the employed file of given application from the attribute information that regulation is obtained in application, also can judge according to filename.When the file that should write down is the employed file of given application, handle entering step S503.When the file that should write down is the user's data file, handle entering step S511.

The recording processing program of subscriber data file progressively is described A..According to step S511～step S515 the recording processing program of subscriber data file is described.

Step S511: systems control division 1601 according to the space bit map that comprises in the UDF volume structure investigation can write down white space in the zoning.After the investigation white space, handle entering step S512.

Step S512: CD drive 1631 is recording data files in the white space that inquiry agency gets.After recording data files, handle entering step S513.

Step S513: systems control division 1601 generates and is used for the file item of the file that administrative institute notes; CD drive 1631 records information recording carrier with this document item.After the log file item, handle entering step S514.

Step S514: systems control division 1601 more new directory so that the file of noting is signed in in the catalogue; CD drive 1631 with the catalogue record that upgrades to information recording carrier 100.Further, systems control division 1601 upgrades and is used for the file item of administrative directory; CD drive 1631 records information recording carrier with the file item that upgrades.After the file item that upgrades is noted, handle entering step S515.

Step S515: systems control division 1601 upgrades space bit map and used so that the sector of noting is changed to; CD drive 1631 records information recording carrier with the space bit map of upgrading.After the space bit map of upgrading is noted, handle entering step S509.

The recording processing program of the employed file of given application progressively is described B..According to step S503, step S521～step S527 and step S531～step S537 the recording processing program of the employed file of given application is described.

Step S503: systems control division 1601 judges whether the file that will write down is real-time files.Systems control division 1601 can judge whether the file that will write down is real-time files, also can judge according to filename from the attribute information that regulation is obtained in application.

When the file that will write down is not real-time files, handle entering step S521.When the file that will write down is real-time files, handle entering step S531.

The recording processing program of non real-time file progressively is described B-1..According to step S521～step S527 the recording processing program of non real-time file is described.

Step S521: the white space during systems control division 1601 is investigated the 2nd section.When the 2nd section space bit map is included in the SVFS file structure, according to space bit map investigation white space.When the 2nd section space bit map is not included in the SVFS file structure, read the whole distribution descriptors in the S2 distribution descriptor table, investigate the 2nd section white space.After the investigation white space, handle entering step S522.

Step S522: CD drive 1631 is recording data files in the white space that inquiry agency gets.After recording data files, handle entering step S523.

Step S523: systems control division 1601 generates and has upgraded the S Volume Descriptor of final entry address, so that carry out loop record in the 2nd section.After having generated the S Volume Descriptor that upgraded, handle entering step S524.

Step S524: systems control division 1601 generates and is used for the S2 of the file that management accounts gets off and distributes descriptor.After generating S2 distribution descriptor, handle entering step S525.

Step S525: systems control division 1601 generates the S file item, and the file that is used for noting signs in in the catalogue.After generating the S file item, handle entering step S526.

Step S526: CD drive 1631 records the 2nd ring zone with the SVFS file structure.After having write down the SVFS file structure, handle entering step S527.

Step S527: CD drive 1631 records the 1st ring zone with the SVFS volume structure.After having write down the SVFS volume structure, handle entering step S504.

The recording processing program of real-time files progressively is described B-2..According to step S531～step S537 the recording processing program of real-time files is described.

Step S531: the white space during systems control division 1601 is investigated the 3rd section.When the 3rd section space bit map is included in the SVFS volume structure, according to space bit map investigation white space.When the 3rd section space bit map is not included in the SVFS volume structure, read the whole distribution descriptors in the S3 distribution descriptor table, investigate the 3rd section white space.After having investigated the 3rd section white space, handle entering step S532.

Step S532: CD drive 1631 is recording data files in the white space that inquiry agency gets.After having write down data file, handle entering step S533.

Step S533: systems control division 1601 generates and has upgraded the S Volume Descriptor of final entry address, so that carry out loop record in the 3rd section.After having generated the S Volume Descriptor that upgraded, handle entering step S534.

Step S534: systems control division 1601 generates and is used for the S3 of the file that management accounts gets off and distributes descriptor.After generating S3 distribution descriptor, handle entering step S535.

Step S535: systems control division 1601 generates the S file item, and the file that is used for noting signs in in the catalogue.After generating the S file item, handle entering step S536.

Step S536: CD drive 1631 records the 2nd ring zone with the SVFS file structure.After having write down the SVFS file structure, handle entering step S537.

Step S537: CD drive 1631 records the 1st ring zone with the SVFS volume structure.After having write down the SVFS volume structure, handle entering step S504.

The recording processing that the recording processing program of the recording processing program of subscriber data file, the recording processing program the when file that will write down is not real-time files and real-time files is carried out repeatedly up to the file that should write down finishes.

Progressively handling procedure is ejected in explanation below.According to step S504～step S509 the ejection handling procedure is described.

Step S504: systems control division 1601 judge user's ends file record, whether sent the CD pop instruction or whether sent the instruction of writing down next file.

When not sending pop instruction, handle entering waiting status.When having sent pop instruction, handle entering step S505.When having sent the instruction of writing down next file, handle entering step S502.

Step S505: systems control division 1601 for the file that makes record in the 2nd section or the 3rd section can read according to the UDF file structure, needs to generate the UDF file item relevant with these files as the processing of At time of eject.After generating the UDF file item, handle entering step S506.

Step S506: systems control division 1601 further generates catalogue file and file item thereof, is used for these files are signed in in the catalogue.After generating catalogue file and file item thereof, handle entering step S507.

Step S507: the UDF file structure under the SPECIFIC catalogue that 1601 couples of step S505 of systems control division and step S506 generate is upgraded, and the UDF file structure that CD drive 1631 will be upgraded records information recording carrier.After having write down the UDF file structure, handle entering step S508.

Step S508: systems control division 1601 upgrades and record SVFS record descriptor, so that the positional information of the UDF file structure that will upgrade recently records in the record descriptor.

Step S509: systems control division 1601 changes the logical volume that comprises closing information and saves descriptor from damage, logical volume after CD drive 1631 will change is saved descriptor from damage and is recorded in the information recording carrier, so that the logical volume that the UDF volume structure is managed becomes closed condition.Noting after logical volume saves descriptor from damage, processing finishes.

The recording processing program of user's data file is carried out in the system that uses UDF.For example, using the system of UDF is personal computer system for example.The recording processing program of the employed file of given application and ejection handling procedure are carried out in the system that uses SVFS.The system that uses SVFS is a civil equipment such as video recorder for example.

In an embodiment of the invention shown in Figure 24, step S511, step S521 or step S531 correspondence " read the step of one of the 1st file control information and the 2nd file control information ", step S512, step S522 or step S532 correspondence " step in the access method access data zone that one of the 1st file control information that utilization is read and the 2nd file control information are provided ", step S507 and step S508 correspondence " are upgraded the corresponding step of record position of the 1st file control information and the 2nd file control information and file ".But the file logging handling procedure is not limited to content shown in Figure 24.As long as the file logging handling procedure possesses " step that reads one of the 1st file control information and the 2nd file control information ", " reading the step of one of the 1st file control information and the 2nd file control information " and " upgrading the corresponding step of record position of the 1st file control information and the 2nd file control information and file " function, can have handling procedure arbitrarily.

By to having the information recording carrier execute file recording processing of data structure shown in Figure 23, the information recording carrier that can have data structure shown in Figure 1.

5. file reproduction is handled

Figure 25 represents the program that file reproduction is handled.The program of supporting paper reproduction processes progressively below.

Step S601: when having inserted information recording carrier 100 in detecting CD drive 1631, systems control division 1601 reads any one party of UDF volume structure or SVFS volume structure.After having read volume structure, handle entering step S602.

Step S602: systems control division 1601 reads any one party of UDF file structure or SVFS file structure according to the volume structure that is read.After having read file structure, handle entering step S603.

Step S603: systems control division 1601 utilizes the file of record in the 1st access method or the 2nd access method information reproduction recording medium 100 according to the file structure that is read.After file reproduction, processing finishes.

In embodiment shown in Figure 25, step S601 and step S602 correspondence " read the step of one of the 1st file control information and the 2nd file control information ", step S603 correspondence " step in the access method access data zone that one of the 1st file control information that utilization is read and the 2nd file control information are provided ".But the file reproduction handling procedure is not limited to content shown in Figure 25.As long as the function of the file reproduction handling procedure possesses above-mentioned " reading the step of one of the 1st file control information and the 2nd file control information " and " step in the access method access data zone that one of the 1st file control information that utilization is read and the 2nd file control information are provided " can have handling procedure arbitrarily.

6. use the file logging of historical bit to wipe processing

Figure 26 represents to use the record of historical bit of the present invention to wipe handling procedure.Progressively explanation uses the record of historical bit to wipe handling procedure below.

Step S210: systems control division 1601 judges it is that execute file recording processing or execute file are wiped processing.Under the situation of log file, handle entering step S211.Wiping under the situation of file, handling entering step S221.

Step S211: CD drive 1631 begins to retrieve white space from assigned address.CD drive 1631 for example begins the white space of side investigation to the periphery from the final entry address.When can not find the white space of required size, handle entering step S212.When having found the white space of required size, handle entering step S214.

Step S212: systems control division 1601 has been set the file control information of wiping file of historical bit by deletion, is released to white space with wiping the zone that file guarantees.After the zone is released, handle entering step S213.

Step S213: CD drive 1631 is instituted an inquiry from assigned address, finds white space.Still can not find white space if detect the periphery, just begin retrieval from the inboard.After finding white space, handle entering step S214.

Step S214: CD drive 1631 is record data in the white space that finds.After record data, handle entering step S215.

Step S215: 1601 pairs of file structures of systems control division are upgraded, so that the file that is write down is signed in in the catalogue.After having upgraded file structure, handle entering step S216.

Step S216: 1601 pairs of final entry addresses of systems control division are upgraded, so that upgrade the position of the pointer begin to retrieve white space.After having upgraded the final entry address, processing finishes.

Step S221: systems control division 1601 keeps the zone of the file of being wiped and sets historical bit.After being provided with historical bit, processing finishes.

Use the record of historical bit to wipe handling procedure by carrying out, preferentially the white space opening entry file of being wiped before from 2 generations.Therefore, the file before 1 generation can be saved, turn back to the zone before 1 generation.In addition, further, can prevent that same position from being striden generation and wiping, upgrade.

In addition, in the UDF file system, wipe bit and be set in the file identification descriptor.But when setting this bit, the file item of the file that is wiped free of must be wiped.Therefore, wipe under the situation of handling procedure at the record of carrying out the historical bit of use, it is effective importing the SVFS file system.

Figure 27 represents to utilize the file logging of having used historical bit of the present invention to wipe the example that handling procedure carries out the zone that file logging wipes.

Distributed zone 201～zone 207 in zone (a)～zone (d) respectively.The migration of file logging in the zone represented in zone (a)～zone (d) respectively.

In zone (a), write down some data in zone 201, zone 203, zone 205 and the zone 207.Zone 202 expression white spaces.Zone 204 and zone 206 are original posting fields of the file that has been wiped free of.In zone 204 and the zone 206, come to differentiate with white space by setting historical bit.

Under the situation of log file in zone (a), begin the white space of side retrieval to the periphery from the final entry address.After the retrieval, data are recorded to zone 202.Under the situation of further log file, because the white space deficiency, zone 204 and the zone 206 of having set historical bit are released, and become white space.Become zone (b) after having write down file in the zone (a).

Under the situation of log file in zone (b), begin the white space of side retrieval to the periphery from the final entry address.After the retrieval, data are recorded to zone 204.In addition, the file of record is wiped free of in zone 203 and the zone 205.Become zone (c) after having write down file in the zone (b).

Under the situation of log file in zone (c), owing to being guaranteed to get off in the zone of file after wiping, record in this zone not, but be recorded in the white space 206.Become zone (d) after having write down file in the zone (c).

By means of the present invention, read the 1st file control information that is used to provide the 1st access method and be used to provide one of the 2nd file control information of the 2nd access method, utilization is accessed in the data area of distributing in the information recording carrier by the access method that any one party provided of the 1st file control information that is read and the 2nd file control information.Therefore, in the situation that has read the 1st file control information and having read under the situation of the 2nd file control information, provide different access methods at the data area.

For example, the 1st access method is carried out access to the data zone, and so that it is used as reproducing reserved area, promptly the file that writes down in the data area only is used for reproducing; The 2nd access method is carried out access to the data zone, so that can the file that be recorded in the data area be reproduced, and also can be with the data area as the zone use of log file therein.

Therefore, utilization can be read the device of the 2nd file control information, the file that writes down in can the reading of data zone or with file logging to the data area.On the other hand, utilization can be read the device of the 1st file control information, can prevent file logging to the data area.

Consequently, can guarantee the anastomose property between UDF volume structure and the SVFS volume structure and guarantee the UDF file structure and the SVFS file structure between anastomose property.

(the 2nd embodiment)

Explanation is in the 2nd embodiment of the present invention, at the example of guaranteeing volume space to be used as 1 zoning in can be according to the zone of UDF file system log file.Set 1 zoning, even in can't discerning the UDF file system of a plurality of zonings, also can reproduce the file that writes down in this information recording carrier.

The data structure of information recording carrier after the processing of Figure 28 presentation format.

In the information recording carrier after format is handled, distributed zone 30～zone 39.Zone 31 and zone 39 are not use the zone.Write down the UDF volume structure in the zone 38 of the zone 32 of interior all sides of information recording carrier and the outer circumferential side of information recording carrier.In the UDF file system, be defined as 1 by zone 33, zone 35 and 37 zones that constituted, zone and can write down zoning.The bitmap of each sector is set according to being used for managing the Space Bitmap Descriptor of zoning empty space, becomes and uses the zone but make zone 33 become posting field, zone 34～zone 37.

SVFS volume structure and file structure are recorded in zone 34 and the zone 35.The zone 34 and the zone 36 according to the UDF document structure definition for using the zone.The record position of the SVFS volume structure of record and file structure is recorded in and reads in the zone 30 in zone 34 and the zone 35.Be recorded in by record position and read in the zone SVFS volume structure and file structure, just do not need will record SVFS volume structure and the zone of file structure as fixed area.Therefore, under the situation of SVFS volume structure or file structure damage, can redistribute the zone of record SVFS volume structure and file structure.

But the SVFS file system will manage as the 3rd section as the 2nd section, the zone that will write down real-time files as the 1st section, the posting field that will comprise the file of the information that is used for controlling real time data according to the posting field 33 of UDF file structure.

In addition, zone 33 manages as the zone of not writing down according to the SVFS file structure.The 2nd section and the 3rd section conduct manage according to the recordable zone of SVFS file structure.

Under the situation of following the UDF file system, but posting field is specified by Space Bitmap Descriptor.Have white space owing to have only in the zone 33, new file logging is in this zone.For the purpose of simplifying the description, Space Bitmap Descriptor not diagram comes out, and still, Space Bitmap Descriptor is recorded in for example next door of set of file descriptor.

After Figure 29 represents that file is recorded in the information recording carrier after format shown in Figure 28 is handled, the data structure of information recording carrier.

But be recorded in the posting field 33 of UDF in the file structure under root directory and USR catalogue among the UDF file structure shown in Figure 3.Therefore, the user can write down, upgrade, delete user file according to the UDF file structure.

In addition, the short of appointment of file of record is forbidden wiping than top grade in the 2nd section and the 3rd section, just can wipe according to the UDF file structure.For example, after file RT_001.RTS is wiped free of, but the posting field of this document in the 3rd section signs in in the Space Bitmap Descriptor of UDF volume structure as posting field.Therefore, can carry out which kind of operation owing to can't expect the user, can infer, the anastomose property between anastomose property between UDF volume structure and the SVFS volume structure and UDF file structure and the SVFS file structure will be lost.Therefore, when the equipment of supporting the SVFS file system in the 2nd section or the 3rd section during record data, need precheck whether to rewrite file structure under the SPECIFIC catalogue with prescriptive procedure.

Figure 30 represents the program that the anastomose property inspection of UDF volume structure and SVFS volume structure is handled and the anastomose property inspection of the file structure of the file structure of UDF and SVFS is handled.Below with reference to Figure 30 and Fig. 3 the program that the anastomose property inspection is handled is described progressively.

Step S701: CD drive 1631 reads UDF volume structure 80.Systems control division 1601 is obtained volume relevant informations such as zoning position according to the UDF volume structure that is read.After having obtained the volume relevant information, handle entering step S702.

Step S702: CD drive 1631 reads the S Volume Descriptor 151 of SVFS.Based on the S Volume Descriptor 151 of the SVFS that is read and the UDF volume structure that is read, systems control division 1601 checks that the information of the title of contained information in the information of contained recording of information position in the expression volume structure, the information of representing the contained recording of information time in the volume structure, the expression volume structure has noncontradictory.

The inspection that the relevant contradiction of information of contained recording of information position has or not in the expression volume structure is as follows.

In the segment information of record noncontradictory is arranged in the zoning information of record and the S Volume Descriptor 151 in the systems control division 1601 investigation UDF volume structure 80.Can write down under the situation that zoning has been recorded, inspection can be write down whether the same area of zoning and the 1st section, and check reproduce special-purpose zoning with by the 2nd section and the 3rd section zone that constitutes the same area whether.Not do not set can write down zoning and not by the 1st section situation of SVFS access under, the section of checking the section that is used for the non real-time file and being used for real-time files with reproduce whether the same area of special-purpose zoning.

The inspection that the relevant contradiction of information of contained recording of information time has or not in the expression volume structure is as follows.

Systems control division 1601 checks whether logical volumes are saved writing time of descriptor from damage consistent with the writing time and the setter ID of setter ID, record descriptor.

The inspection that the relevant contradiction of information of the title of contained information has or not in the expression volume structure is as follows.

Systems control division 1601 checks whether the file label of UDF Primary Volume Descriptor (Primary VolumeDescriptor) is identical with the file label of S Volume Descriptor.

By execution in step S702, systems control division 1601 can be investigated the relevant anastomose property of volume structure.When the contained information of volume structure does not have contradiction, handle entering step S703.When there is contradiction in the contained information of volume structure, just think that the contained information of volume structure misfits.

Step S703: systems control division 1601 retrieval UDF file structures, find the SPECIFIC catalogue.Under root directory, except that the SPECIFIC catalogue, also have the USR catalogue, therefore the file of logining under the USR catalogue, does not check object as anastomose property owing to do not handle as the SVFS file system, and with the SPECIFIC catalogue as checking object.The UDF file system is retrieved according to the order of file set descriptor 81, file item 82, file item 83, SPECIFIC catalogue after handling volume structure 80.After retrieval, handle entering step S704.

Step S704: systems control division 1601 is retrieved the SVFS file structures, finds the S file item of SPECIFIC catalogue.Systems control division 1601 is retrieved according to the order of the S file item 154 of the S file item 153 of S Volume Descriptor 151, record descriptor 152, root directory, SPECIFIC catalogue.After retrieval, handle entering step S705.

Step S705: systems control division 1601 is obtained the file identification descriptor, so that the beginning from the SPECIFIC catalogue begins the anastomose property of survey document in order or catalogue.

Step S706: systems control division 1601 is investigated in order has the filename consistent with the filename that writes down or directory name in the file identification descriptor or whether the S file item of directory name exists.Review the S file item shown in brother's numbering of the S file item shown in the child's item numbering of S file item of the catalogue that will investigate, this S file item, the brother different S file item shown in numbering, promptly can read the S file item of file contained in the catalogue that will investigate or catalogue with the S file item shown in this brother's item numbering.In addition, in the UDF file structure, catalogue also comprises the file identification descriptor of representing parent directory.With the corresponding S file item of file identification descriptor of expression parent directory be the S file item shown in the father and mother's item numbering in the SVFS file structure.

When not having consistent S file item, just be judged as and misfit.When consistent S file item is arranged, handle entering step S707.

Step S707: systems control division 1601 judges that current inspection is to liking catalogue or file.Current inspection to as if during catalogue, handle entering step S710.Current inspection to as if during file, handle entering step S708.

Step S708: the positional information that systems control division 1601 is obtained by the file of UDF file structure management is the distribution descriptor of file item.After obtaining the distribution descriptor, handle entering step S709.

Step S709: systems control division 1601 contained S2 from the SVFS file structure distributes descriptor table or S3 to distribute to obtain S2 in the item numbering in the descriptor table and distributes descriptor or S3 to distribute descriptor.Distribution descriptor and S2 based on the UDF file structure distribute descriptor or S3 to distribute descriptor, check whether the record position of file is identical.Under the situation inequality, change has taken place according to any one party of UDF file system or SVFS file system in file as can be known.Under the identical situation, handle entering step S710.

Step S710: systems control division 1601 will check that according to the UDF file structure object changes into next file or the catalogue in the catalogue of investigating.After the change, handle entering step S711.

Step S711: whether all files in the catalogue that systems control division 1601 judgements are being investigated or the inspection of catalogue finish.When judging that discovery has finished, handle entering step S712.When judging that discovery does not finish as yet, handle entering step S705.

Step S712: systems control division 1601 will check that object changes into still unexplored catalogue.After changing, handle entering step S713.

Step S713: systems control division 1601 judges whether the inspection of the file in whole catalogues under the SPECIFIC catalogue finishes.When finishing, processing finishes.When not finishing as yet, handle entering step S705.

In addition, UDF file system under the SPECIFIC catalogue and file identification descriptor are recorded in the continuum.The UDF file item under the SPECIFIC catalogue and the positional information of file identification descriptor are by the field and the management of locative field of the length of the specific UDF file structure of expression record descriptor, therefore, when corresponding file item or file identification descriptor are recorded in beyond this zone, can be judged as these file structures and be rewritten.In addition, the time on modification date of these file items all is synchronization, according to SVFS file system record, therefore, revises the date temporal information by further inspection, can judge the situation of being rewritten according to the UDF file system.

According to the 2nd embodiment of the present invention, utilize the equipment of supporting the SVFS file system, can guarantee the compatibility between UDF file system and the SVFS file system.

In addition, be described according to the program of the sequential search anastomose property of the catalogue of logining in the UDF file structure, but also can check anastomose property according to the order of the catalogue of logining in the SVFS file structure.

In addition, the program of the anastomose property inspection processing of the file structure of the file structure of the anastomose property inspection of UDF volume structure and SVFS volume structure processing and UDF and SVFS is also effective for the 1st embodiment.For example, according to SVFS file system record data, upgrade the UDF file structure midway power supply be cut off when causing record to interrupt, the anastomose property of the anastomose property of UDF volume structure and SVFS volume structure or UDF file structure and SVFS file structure will be lost.In this case, according to above-mentioned handling procedure, can find out the file that does not have anastomose property.

(the 3rd embodiment)

In the 3rd embodiment of the present invention, declare record include core set file and superset file manufacturing example at the information recording carrier of interior file.

Figure 31 has represented to write down and has comprised core set file and the superset file data structure at the information recording carrier of interior file.

In this information recording carrier, distributed zone 41～zone 48.Zone 41 and zone 48 are not use the zone.Write down the UDF volume structure in the zone 47 of the zone 42 of interior all sides of information recording carrier and the outer circumferential side of information recording carrier.SVFS volume structure and SVFS file structure have been write down in zone 43 and the zone 44.In the UDF file system, zone 45 and zone 46 are defined as 1 and reproduce special-purpose zoning.In the SVFS file system, zone 45 is defined as the 1st section, and zone 46 is defined as the 2nd section.

Figure 32 has represented bibliographic structure.Bibliographic structure shown in Figure 2 and bibliographic structure shown in Figure 32 are except appending under the SPECIFIC catalogue the EXTEND catalogue, and bibliographic structure shown in Figure 2 and bibliographic structure shown in Figure 32 are same structures.

The control documents that is used for reproducing basic video data is recorded under the PLAYLIST catalogue, will be used for carrying out the file logging of interactivity or complicated reproduction work to the EXTEND catalogue.The data that write down in this catalogue have: the control data that scripts such as use JavaScript are expressed, the control data via the execution of networks such as the Internet, the less static images data of utilizing script control or voice data etc.

In bibliographic structure shown in Figure 32, comprise core set file, superset file and complete or collected works' file.The core set file is the file that is used for realizing the basic function of given application, and the superset file is the file that is used for realizing the expanded function of given application.In complete or collected works' file, comprise core set file and superset file.For example, all files that writes down in the SPECIFIC catalogue all is complete or collected works' file, and log file is the core set file in PLAYLIST catalogue and the STREAM catalogue, and the file that writes down in the EXTEND catalogue is the superset file.

The civilian reproduction dedicated play machine that the CPU ability is low, available memory is few can only use the core set file to carry out reproduction work, can provide the PC of abundant interactivity video/audio reproduction of content or senior AV equipment then bibliographic structure to be set at and can use complete or collected works' file to carry out reproduction work.

Non real-time file loggings such as control data among the core set file are in the 1st section.The data file that writes down in real-time files among the core set file, superset file and the USR catalogue is in the 2nd section.

Among the SPECIFIC catalogue, the file that writes down in PLAYLIST catalogue and the STREAM catalogue has been set SVFS volume structure and file structure, and it is reproduced according to the SVFS file system.Set UDF volume structure and file structure, all files is all reproduced according to the UDF file system.

Because the number of files that JavaScript is relevant increases, only the core set file is signed in in the SVFS file structure, can reduce the size of the data structure of SVFS.Therefore, can low-costly make the civil equipment of supporting basic function.

Figure 33 has represented to write down and has comprised core set file and the superset file production process at the information recording carrier of interior file.Below progressively declare record comprise core set file and superset file production process at the information recording carrier of interior file.

Step S801: contents producer is set up the data of core set file, to realize basic representational role.After the data of having set up the core set file, handle entering step S802.

Step S802: contents producer is set up the data of superset file, to realize abundanter representational role.After the data of having set up the superset file, handle entering step S803.

Step S803: systems control division 1601 generates the UDF volume structure, reproduces special-purpose zoning so that distribute in information recording carrier.After generating the UDF volume structure, handle entering step S804.

Step S804: systems control division 1601 generates the UDF file structure, so that make each file become specified configuration.After generating the UDF file structure, handle entering step S805.

Step S805: systems control division 1601 generates the SVFS volume structure, so that distribute the 1st section, the 2nd section in information recording carrier.After generating the SVFS volume structure, handle entering step S806.

Step S806: systems control division 1601 generates the SVFS file structure, so that can be according to the posting field of SVFS file-system access core set file.After generating the SVFS file structure, handle entering step S807.

Step S807: the data recording that is generated by execution in step S801 and step S802 is in information recording carrier.With data recording after information recording carrier, processing finishes.

Information recording carrier is when reproducing special use, uses molding press (stamper) equimagnetic disk manufacturing apparatus to make the information recording carrier of record data.In addition, when information recording carrier is when appending type, use CD drive execution in step S801 and step S802, the continuous data recording of Sheng Chenging is produced the special-purpose information recording carrier of regeneration thus.

In addition, in above-mentioned the 3rd embodiment, being defined as the situation of reproducing special-purpose zoning and reproducing private section with the data area that will write down the reproduction data is that example is described, but the present invention is not limited thereto.

As long as the access method that UDF volume structure and file structure are provided is that access is carried out in the data zone, so that the method for core set file that comprises in the file that writes down in the reproduction data area and superset file, the access method that SVFS volume structure and SVFS file structure are provided is that access is carried out in the data zone, so that the core set file that only comprises in the file that writes down in the reproduction data area and the access method of the core set file among the superset file, but, also can be suitable for the present invention even be defined as under the situation that can write down zoning and record segment in the data area of having write down the reproduction data.Even be defined as under the situation that can write down zoning and reproduction private section in the data area of having write down the reproduction data, also can be suitable for the present invention.But, also can be suitable for the present invention even be defined as under the situation of reproducing special-purpose zoning and record segment in the data area of having write down the reproduction data.

By means of the present invention, read the 1st file control information that is used to provide the 1st access method and be used to provide one of the 2nd file control information of the 2nd access method, utilization is accessed in the data area of distributing in the information recording carrier by the access method that any one party provided of the 1st file control information that is read and the 2nd file control information.Therefore, in the situation that has read the 1st file control information and having read under the situation of the 2nd file control information, provide different access methods at the data area.

For example, the method that the 1st access method is the access data zone, reproduce the contained core set file of the file that writes down in the data zone (being used for realizing the file of the basic function of given application) and superset file (being used for realizing the file of the expanded function of given application), the 2nd access method are the core set file that comprises in the file that the data zone is carried out writing down in access, the reproduction data area and the method for the core set file among the superset file.

Therefore, the device that can read the 1st file control information can be realized the basic function and the expanded function of given application.The device that can read the 2nd file control information can only be realized the basic function of given application.

Consequently, the civilian reproduction dedicated play machine that the CPU ability is low, available memory is few can only use the core set file to carry out reproduction work, can provide the PC or the senior AV equipment of abundant interactivity video/audio reproduction of content then can use complete or collected works' file to carry out reproduction work.

Industrial utilizability

By means of the present invention, read the 1st file control information that is used to provide the 1st access method and be used to provide one of the 2nd file control information of the 2nd access method, utilization is accessed in the data area of distributing in the information recording carrier by the access method that any one party provided of the 1st file control information that is read and the 2nd file control information.Therefore, in the situation that has read the 1st file control information and having read under the situation of the 2nd file control information, provide different access methods at the data area.

(1) for example, the 1st access method is carried out access to the data zone, so that it is used as reproducing reserved area, i.e. and the file that writes down in the reproduction data area; The 2nd access method is carried out access to the data zone, so that can the file that be recorded in the data area be reproduced, and also can be with the data area as the zone use of log file therein.

Therefore, utilization can be read the device of the 2nd file control information, the file that writes down in can the reading of data zone or with file logging to the data area.On the other hand, utilization can be read the device of the 1st file control information, can prevent file logging to the data area.

Consequently, can guarantee the anastomose property between UDF volume structure and the SVFS volume structure and guarantee the UDF file structure and the SVFS file structure between anastomose property.

(2) for example, the method that the 1st access method is the access data zone, reproduce the contained core set file of the file that writes down in the data zone (being used for realizing the file of the basic function of given application) and superset file (being used for realizing the file of the expanded function of given application), the 2nd access method are the core set file that comprises in the file that the data zone is carried out writing down in access, the reproduction data area and the method for the core set file among the superset file.

Therefore, the device that can read the 1st file control information can be realized the basic function and the expanded function of given application.The device that can read the 2nd file control information can only be realized the basic function of given application.

Consequently, the civilian reproduction dedicated play machine that the CPU ability is low, available memory is few can only use the core set file to carry out reproduction work, can provide the PC or the senior AV equipment of abundant interactivity video/audio reproduction of content then can use complete or collected works' file to carry out reproduction work.

Claims (20)

1. method, being used for access has distributed the information recording carrier of data area, wherein,

Record is used to provide the 1st file control information and the 2nd file control information that is used to provide the 2nd access method of the 1st access method in the above-mentioned information recording carrier,

Above-mentioned the 1st file control information and above-mentioned the 2nd file control information manage the file that is recorded in the above-mentioned information recording carrier, comprise:

(a) read either party step of above-mentioned the 1st file control information and above-mentioned the 2nd file control information; And

(b) utilize the step of coming the above-mentioned data area of access by the access method that either party provided of above-mentioned the 1st file control information that reads and the 2nd file control information.

2. the method for claim 1, wherein

Above-mentioned the 1st access method is: access is carried out in above-mentioned data area, make above-mentioned data area bring into play the method for function as the reproduction reserved area that only reproduces the file that writes down in the above-mentioned data area;

Above-mentioned the 2nd access method is: access is carried out in above-mentioned data area, make above-mentioned data area as can be recorded in that file in the above-mentioned data area reproduces and can be in above-mentioned data area the zone of log file bring into play the method for function.

3. the method for claim 1, wherein

The file that writes down in the above-mentioned data area comprises core set file and superset file;

Above-mentioned core set file is the file that is used for realizing the basic function of given application;

Above-mentioned superset file is the file that is used for realizing afore mentioned rules Application Expansion function;

Above-mentioned the 1st access method is that access is carried out in above-mentioned data area, so that reproduce the core set file that comprises in the file that writes down in the above-mentioned data area and the method for superset file;

Above-mentioned the 2nd access method is that access is carried out in above-mentioned data area, so that only reproduce the core set file that comprises in the file that writes down in the above-mentioned data area and the method for the above-mentioned core set file among the superset file.

4. the method for claim 1, wherein

Be assigned at least one zoning that is defined as the zone that above-mentioned the 1st access method can access in the above-mentioned information recording carrier and be defined as at least one section in the zone that above-mentioned the 2nd access method can access;

Above-mentioned data area is the overlapped overlapping region of the part of above-mentioned at least one zoning and above-mentioned at least one section.

5. method as claimed in claim 4, wherein,

Above-mentioned section comprises the 1st section and the 2nd section,

Overlapping by above-mentioned the 1st section and above-mentioned the 2nd section zone that constitutes and above-mentioned zoning.

6. method as claimed in claim 4, wherein,

Above-mentioned zoning and above-mentioned section are that unit is cut apart with the ECC piece.

7. the method for claim 1, wherein

Above-mentioned steps (b) is included in the step of log file in the above-mentioned data area;

Said method further comprises:

(c) upgrade above-mentioned the 1st file control information and above-mentioned the 2nd file control information, so as with the corresponding step of the record position of above-mentioned file.

8. method as claimed in claim 7, wherein,

Be assigned at least one zoning that is defined as the zone that above-mentioned the 1st access method can access in the above-mentioned information recording carrier and be defined as at least one section in the zone that above-mentioned the 2nd access method can access;

Above-mentioned data area is the overlapped overlapping region of the part of above-mentioned at least one zoning and above-mentioned at least one section.

9. method as claimed in claim 8, wherein,

Above-mentioned section comprises the 1st section and the 2nd section,

Above-mentioned the 1st section is the zone of the non real-time file of the record function that is used for realizing given application;

Above-mentioned the 2nd section is the zone that is used for being recorded as the real-time files of the function that realizes the afore mentioned rules application;

Above-mentioned steps (b) comprises:

The file of distinguishing above-mentioned record is the above-mentioned non real-time file or the step of above-mentioned real-time files;

When the file of above-mentioned record is above-mentioned non real-time file, with above-mentioned non real-time file logging to above-mentioned the 1st section step; And

When the file of above-mentioned record is above-mentioned real-time files, above-mentioned real-time files is recorded above-mentioned the 2nd section step.

10. method as claimed in claim 7, wherein,

Above-mentioned the 2nd file control information comprises the end of record (EOR) positional information of expression end of record (EOR) position,

Above-mentioned steps (b) comprises according to above-mentioned end of record (EOR) positional information the step of above-mentioned file logging in the above-mentioned data area.

11. method as claimed in claim 10, wherein,

Above-mentioned end of record (EOR) positional information is illustrated on the direction position of end of record (EOR) repeatedly,

Above-mentioned steps (b) comprises according to above-mentioned end of record (EOR) positional information above-mentioned file is recorded step in the above-mentioned data area in one direction repeatedly.

12. method as claimed in claim 7, wherein,

Above-mentioned the 2nd file control information comprises the record position information of the record position of representing above-mentioned the 1st file control information,

Above-mentioned steps (c) comprises the above-mentioned record position information that upgrades above-mentioned the 2nd file control information, so that the step of the record position of above-mentioned the 1st file control information of corresponding above-mentioned renewal.

13. method as claimed in claim 7, wherein,

Above-mentioned the 1st file control information comprises the 1st and saves information from damage, is used for representing that the state of above-mentioned the 1st file control information is open mode or closed condition;

Be used for representing the 1st of above-mentioned open mode is saved information representation from damage can be with the state of file logging in the above-mentioned information recording carrier, be used for representing that the 1st of above-mentioned closed condition saves the state that the information representation file is got off by normal recordings from damage,

Said method further comprises: (b) saves the step that information places above-mentioned open mode from damage with the above-mentioned the 1st before in above-mentioned steps;

And save the step that information places above-mentioned closed condition from damage with the above-mentioned the 1st afterwards in above-mentioned steps (b).

14. method as claimed in claim 7, wherein,

Above-mentioned the 2nd file control information comprises the 2nd and saves information from damage, is used for representing that the state of above-mentioned the 2nd file control information is open mode or closed condition;

Be used for representing the 2nd of above-mentioned open mode is saved information representation from damage can be with the state of file logging in the above-mentioned information recording carrier, be used for representing that the 2nd of above-mentioned closed condition saves the state that the information representation file is got off by normal recordings from damage,

Said method further comprises: (b) saves the step that information places above-mentioned open mode from damage with the above-mentioned the 2nd before in above-mentioned steps;

And save the step that information places above-mentioned closed condition from damage with the above-mentioned the 2nd afterwards in above-mentioned steps (b).

15. method as claimed in claim 7, wherein,

Above-mentioned the 1st file control information comprises the 1st record position information that is used for representing to be recorded in the 1st file name information of the file name in the above-mentioned data area and is used for representing being recorded in the record position of file in the above-mentioned data area,

Above-mentioned the 2nd file control information comprises the 2nd record position information that is used for representing to be recorded in the 2nd file name information of the file name in the above-mentioned data area and is used for representing being recorded in the record position of file in the above-mentioned data area,

Said method further comprises:

Be used for distinguishing whether in correspondence with each other step of above-mentioned the 1st file name information and above-mentioned the 2nd file name information; And

Be used for distinguishing whether in correspondence with each other step of above-mentioned the 1st record position information and above-mentioned the 2nd record position information.

16. the method for claim 1, wherein

Record file in the above-mentioned data area,

Above-mentioned steps (b) comprises the step that is used for reproducing above-mentioned file.

17. a device, being used for access has distributed the information recording carrier of data area, wherein,

Record the 1st file control information that is used to provide the 1st access method and the 2nd file control information that is used to provide the 2nd access method in the above-mentioned information recording carrier,

Above-mentioned the 1st file control information and above-mentioned the 2nd file control information manage the file that is recorded in the above-mentioned information recording carrier,

Said apparatus comprises:

Reading unit is used for reading any one party of above-mentioned the 1st file control information and above-mentioned the 2nd file control information; And

Access unit utilizes and comes the above-mentioned data area of access by the access method that either party provided of above-mentioned the 1st file control information that reads and the 2nd file control information.

18. device as claimed in claim 17, wherein,

Above-mentioned access unit possesses the record cell of file logging to above-mentioned data area,

Said apparatus further possesses and upgrades above-mentioned the 1st file control information and above-mentioned the 2nd file control information, so as with the corresponding updating block of the record position of above-mentioned file.

19. device as claimed in claim 17, wherein,

Record file in the above-mentioned data area,

Above-mentioned access device possesses the reproduction units that is used for reproducing above-mentioned file.

20. an information recording carrier has write down the 1st file control information and the 2nd file control information, wherein,

Above-mentioned the 1st file control information and above-mentioned the 2nd file control information manage the file that is recorded in the above-mentioned information recording carrier,

The data area that above-mentioned the 1st file control information distributes in above-mentioned information recording carrier provides the 1st access method,

Above-mentioned the 2nd file control information provides the 2nd access method to above-mentioned data area.

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