CN100565689C

CN100565689C - The equipment and the method that the recording medium of overlapping segment information are arranged on it and be used to form, write down and reproduce this recording medium

Info

Publication number: CN100565689C
Application number: CNB2005800086798A
Authority: CN
Inventors: 朴容彻
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2004-03-18
Filing date: 2005-03-03
Publication date: 2009-12-02
Anticipated expiration: 2025-03-03
Also published as: CN101178920B; CN101075447A; CN1934643A; CN1942934A; CN101178920A; CN101075447B; CN1942934B

Abstract

A kind of recording medium; such as comprising high density and/or the optical record medium that writes down superincumbent segment information; and be used for being used to strengthen data protection, data management and/or reproduction compatibility to this recording medium recording with from the apparatus and method for of this recording medium reproducing.This recording medium can comprise at least one section district, and this is that dish is gone up the zone by a plurality of effective PAC controls, and if specified section district overlapped, but then this overlapping region is controlled in the control information of each PAC of application controls overlapping region.

Description

The equipment and the method that the recording medium of overlapping segment information are arranged on it and be used to form, write down and reproduce this recording medium

Technical field

The present invention relates to managing physical access control (PAC) and record data, comprise the medium (for example, such as high density compact discs such as Blu-ray disc) of PAC and record data and be used for to these medium recording data and/or from the equipment and the method for these media reproducing data.

Background technology

For example medium such as CD can be used to write down lot of data.In the middle of available CD, in the middle of for example Blu-ray disc novel high density optical media (HD-DVD) such as (hereinafter referred to as " BD ") was being developed, it can allow record and/or store more high definition video and/or voice data.

BD also comprises can rewrite Blu-ray disc (BD-RE), write-once Blu-ray disc (BD-WO) and read-only Blu-ray disc (BD-ROM).

Current, the incompatibility that may exist between the driver that a problem of existing system is a different editions, for example, the driver with previous version of one group of previous ability may be difficult to and comprise from the mutual medium of the driver of at least one ability in one group of ability afterwards and carrying out alternately.

Summary of the invention

Exemplary embodiment of the present invention provides PAC bunch such as the PAC that comprises segment information on the media such as high density compact disc bunch and the segment information that uses to comprise at least one section in the identifying user data field to come to the medium recording data with from the equipment and the method for media reproducing data, and wherein same PAC bunch all section is nonoverlapping.

Exemplary embodiment of the present invention provides such as the PAC that comprises segment information on the media such as high density compact disc bunch and uses PAC bunch of comprising segment information to come to the medium recording data with from the equipment and the method for media reproducing data, and wherein at least one section in a PAC bunch can be overlapping with at least one section of the 2nd PAC bunch.

Exemplary embodiment of the present invention provides the physical access control (PAC) bunch that comprises record segment information thereon, is used to strengthen data protection, strengthens data management, improves reproduction compatibility, avoids data corruption and/or reduces unnecessary, repeated operation.

Exemplary embodiment of the present invention provides such as media such as high density compact disc and the equipment and the method that are used to manage the PAC that comprises segment information.In one exemplary embodiment, the present invention is directed to a kind of have be used for the recording medium of data structure of data field that management comprises the recording medium of at least one physical access control (PAC bunch), this at least one PAC bunch comprises and is used to manage to the recording medium recording data and/or from the information of recording medium reproducing data, each PAC bunch of segment information that comprises at least one section in the identifying user data field, wherein same PAC bunch all section is not overlapping.

In one exemplary embodiment, the present invention is directed to the method for a kind of control to the visit of recording medium, comprise: identify first and second physical accesss control (PAC) bunch, each bunch comprises the segment information of the not overlay segment in the user data area of identification record medium, and wherein at least one section in a PAC bunch is overlapping with at least one section of the 2nd PAC bunch; And control the visit of at least one section in a PAC bunch with the 2nd PAC bunch overlapping region according at least one overlapping rule.

In one exemplary embodiment, the present invention is directed to a kind of method at the enterprising line item of recording medium, comprise: identify first and second physical accesss control (PAC) bunch, each bunch comprises the segment information of the not overlay segment in the user data area of identification record medium, and wherein at least one section in a PAC bunch is overlapping with at least one section in the 2nd PAC bunch; And if this two PAC bunch all allow to this at least one segment record, then the overlapping region record of this at least one section of this at least one section in a PAC bunch and the 2nd PAC bunch.

In one exemplary embodiment, the present invention is directed to a kind of method from recording medium reproducing, comprise: identify first and second physical accesss control (PAC) bunch, each bunch comprises the not overlay segment in the user data area of identification record medium, and wherein at least one section in a PAC bunch is overlapping with at least one section in the 2nd PAC bunch; And if this two PAC bunch all allow from least one section reproduction, then this at least one section from a PAC bunch reproduces with the overlapping region of this at least one section of the 2nd PAC bunch.

In one exemplary embodiment, the present invention is directed to a kind of being used for to recording medium recording and/or from the equipment of this recording medium reproducing with data field, comprise: controller, be used for bunch coming controlling recording or reproduction based at least one physical access control (PAC) that comprises first and second physical accesss control (PAC) bunch, wherein when at least one section in a PAC bunch of defined data field and at least one section in the 2nd PAC bunch of defined data field are overlapping, if do not allow in this at least one section of first and second PAC bunches any one record or from its reproduction, then do not allow to reproduce to overlapping region record or from the overlapping region; And pickup unit, be used for to recording medium recording or from recording medium reproducing.

Should be appreciated that the present invention above general description and the following detailed description are exemplary and explanat, be intended to the further explanation that the invention provides for as claimed in claim.

Brief Description Of Drawings

Comprise that accompanying drawing is for the further understanding to exemplary embodiment of the present invention is provided, they are included and are constituted the application's a part, and accompanying drawing shows exemplary embodiment of the present invention, wherein,

Figure 1A and 1B illustrate according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 2 illustrates according to INFO2 district on the high density compact disc of one exemplary embodiment of the present invention and INFO1 district;

Fig. 3 illustrates the PAC on the high density compact disc of being recorded in according to one exemplary embodiment of the present invention;

Fig. 4 illustrates according to the PAC on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 5 illustrates " the unknown PAC rule " field according to one exemplary embodiment of the present invention;

Fig. 6 illustrates according to the section district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 7 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 8 illustrates according to the section district by the management of a plurality of PAC district on the high density compact disc of one exemplary embodiment of the present invention; And

Fig. 9 illustrates the optical recording/reproducing apparatus according to one exemplary embodiment of the present invention.

Implement best mode of the present invention

Now will be in detail with reference to exemplary embodiment of the present invention, their example is with shown in the drawings.In the case of any possible, in institute's drawings attached, will use identical mark to represent same or analogous part.

In one exemplary embodiment, the implication of usual except it in convention, term " physical access control (PAC) " can comprise that also being recorded in dish goes up, is used to manage/control whole dish or the data recording of the particular segment that the physical areas of coiling is interior and the additional information of reproduction.Term " physical access control (PAC) " can abbreviate " PAC ", " PAC information " and/or " PAC control information " as.In addition, in the dish above-noted district of PAC can be called as " PAC district ", and bunch being that the PAC that unit is recorded in the PAC district can be called " PAC bunch " for short.

In addition, PAC according to exemplary embodiment of the present invention can comprise " unknown rule ", it can limit the driver with specific unknown PAC_ID and the driver that comprises previous version (for example, " traditional " version) read/write to the data of whole dish or particular segment.The PAC that has used " unknown rule " can be called as " unknown PAC ".Similarly, the known specific PAC_ID that is recorded on the PAC can be called as " known regimes ", and " the PAC customizing messages " that be applied to PAC can be called as " known PAC ".

To be described in the PAC district structure of record PAC with reference to the accompanying drawings and by using this structure to write down and reproducing the equipment and the method for data.

Figure 1A or 1B illustrate according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Figure 1A, can to the outer ring high density compact disc subregion be introducing district, data field and draw-out area from inner ring.Introducing the district can be INFO2 district and INFO1 district by further subregion, is used for writing down various types of information thereon.INFO2 district and INFO1 district can comprise PAC (physical access control) district.

For simplicity, the PAC district that distributes to the INFO2 district can be labeled as the PAC2 district, and the PAC district that will distribute to the INFO1 district is labeled as the PAC1 district.Can write down original PAC above one in PAC2 district and the PAC1 district, and another can have the backup area of the copy that is used to write down original PAC.If write direction and be inner ring from dish to the outer ring, then being recorded in original PAC in the PACII district and will backing up that PAC is recorded in will be favourable in the PACI district.

Figure 1B illustrates the dual layer discs structure with two recording layers that comprise first recording layer (L0: layer 0) and second recording layer (L1: layer 1), and wherein each recording layer comprises introducing/draw-out area (being also referred to as inner region), data field and

outside area

0 or 1.

Each can comprise the INFO2 district and the INFO1 district of the management information that is used for indicator to introduce district's (inner area 0) and draw-out area (inner area 1), and the PAC district can be arranged in INFO2 district and/or INFO1 district.

Similar with single-layered disk, the PAC district that distributes to the INFO2 district can be marked as the PAC2 district, and the PAC district that distributes to the INFO1 district can be marked as the PAC1 district.Can write down original PAC above one in PAC2 district and the PAC1 district, and another can have the backup area of the copy that is used to write down original PAC.If write direction and be inner ring from dish to the outer ring, then original PAC is recorded in the PACII district, will be favourable in the PACI district and will back up that PAC is recorded in.

In the example shown in Figure 1B, because for dual layer discs, PAC1 and PAC2 district are not only in introducing the district, but also in the draw-out area, so the PAC size of dual layer discs is the twice of single-layered disk.

Can provide the PAC district to handle the problem that when the actuator device than older version can not detect function on the added dish that has with the function of the driving arrangement compatibility of redaction, may take place.The PAC district can use one or more " unknown rule " to handle compatibility issue.

Can use " unknown rule " to come the predictable operation of console panel, the linearity replacement in for example basic read/write control etc., defectiveness district, logical overwrite etc.Also can provide a zone can be suitable for wherein with indication " unknown rule " on dish, for example, define whole the dish or the section of certain part of dish etc., this will describe after a while in further detail.

In the zone by " unknown rule " management on dish, can provide DMA (disc management area), spare area, user data area and/or other similar district.

Thus, by the definition panel, just can use " unknown rule " to visit actuator device, and the dish of more recent version can reduce the unnecessary accessing operation than the actuator device of older version than older version.

In addition; by definition accessible area on the physical areas of dish so that conduct interviews by using PAC than the actuator device of older version; just can protect the data field of the user data that is write down above having comprised more steadily; and/maybe can avoid or minimizing dish unauthorized access (for example, assault).

Can discuss from the angle of the feature write of high density compact disc and introduce INFO2 district and the INFO1 district that has PACII and I district the district.

Fig. 2 illustrates according to INFO2 district on the high density compact disc of one exemplary embodiment of the present invention and INFO1 district.

With reference to figure 2, for exemplary BD-RE high density compact disc, the INFO2 district can have 256 bunches, comprise 32 bunches of PACII district, 32 bunches of DMA (defect management) 2 districts that are used for defect management, above-noted 32 bunches of the CD of control information (control data) 2 districts, and/or 32 bunches of the BZ of buffer zone (buffer zone) 3 districts.

The INFO1 district can comprise 32 bunches of BZ2 district of buffer zone, can be used as 32 bunches of drive zone of the drive zone of memory driver specific information, 32 bunches of DMA1 district that are used for managing defect are used for 32 bunches of CD1 district of record controls information, and/or can be used as the BZ1-PACI district in PAC district.

For write-once high density compact disc (BD-R), the INFO2 district can have 256 bunches, comprise that 32 bunches PACII district, DMA2 district, CD2 district and BZ3 district are respectively arranged, and the INFO1 district comprises that 32 bunches BZ2 district, DMA1 district, CD1 district and/or BZ1-PACI district are respectively arranged, and drive 128 bunches of the district.

For read-only high density compact disc (BD-ROM), the INFO2 district can have 256 bunches, and comprising respectively has 32 bunches PACII district, CD2 district and BZ3 district, and 256 bunches of INFO1 district comprise that 32 bunches CD1 district and/or BZ1-PACI district are respectively arranged.According to the rewritten feature of high density compact disc, can distribute the PAC district of the exemplary embodiment of the present that is 32 bunches to INFO2 district in introducing the district and/or INFO1 district.

In the example of dual layer discs, not only can in introducing the district, also can in the draw-out area, specify the PAC district, thereby a PAC district can have 64 bunches with two recording layers.

In the PAC district of 32 bunches (or 64 bunches), a PAC can have one bunch, is used to write down a plurality of effective PAC.If needed, a plurality of sizes also can be arranged is one bunch PAC.Be described with reference to Figure 3 a PAC as a bunch of exemplary configurations that writes down.

Fig. 3 illustrates the synoptic diagram according to the structure that is recorded in the PAC on the high density compact disc of one exemplary embodiment of the present invention.

A PAC with reference to 3, one bunches of sizes of figure (32 sectors) can comprise heading area and specific information district, and it is exclusively used in specific disk drive (for example, CD drive).The PAC heading area can have 384 bytes to be assigned to first sector of PAC, be used to write down various types of PAC information, such as about " unknown PAC rule " and with the information of section, and the PAC district another the zone above can write down the information (light) disk drive, that can be called as " known regimes " that is exclusively used in.

Be described with reference to Figure 4 the exemplary configurations that is recorded in the PAC in the said structure.For simplicity, in this describes, need the specific PAC field of more detailed description will be referring to the accompanying drawing that these specific fields are shown.

Fig. 4 is the synoptic diagram that illustrates according to the PAC structure on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 4, PAC can comprise the stem part that is applicable to all PAC (in an example, the most nearly 384 bytes of first frame) and the above-noted zone of information of driver special use.

Exemplary stem part can comprise " PAC_ID " of 4 bytes, " unknown PAC rule ", " entire--disc--flags ", " hop count " and/or 32 " section i.e. section 0 arrive section 31 " that 8 bytes are respectively arranged of 1 byte of 1 byte of 4 bytes.

" PAC_ID " can provide current PAC state and identification code, for example, if " PAC_ID " is ' 00000000h ', then " PAC_ID " can indicate current PAC not to be used, if and " PAC_ID " is ' FFFF FF FFh ', then " PAC_ID " even can indicate current PAC before to be used, this PAC still can be used again.

By record " PAC_ID " (such as ' 54 53 54 00h ') in pre-determined bit, can be with " PAC_ID " but as being used for whether definite dish is the code of current drive free access.That is, if current drive is not known applied " PAC_ID ", determine that then this is current drive and can't understands the situation of current PAC because of reasons such as mismatched that ' 54 53 54 00h ' are used as the code of the information of request reference record on " unknown PAC rule " field.

As mentioned above, " unknown PAC rule " field can be used as the field of opereating specification that appointment can not be discerned the driver of current PAC, and this will further describe with reference to figure 5.

Fig. 5 is the synoptic diagram that illustrates according to the configuration of " the unknown PAC rule " of one exemplary embodiment of the present invention.

Referring to Fig. 5, the controllable degree in each district can be by " unknown PAC rule " is enabled on the dish.In this example, the zone of control on " zone " the row indicating panel among Fig. 5, control types is shown in " control " tabulation, such as read/write etc., and the figure place that control is required is shown in " figure place " tabulation.In " figure place " row other can represent to have the situation of the dual layer discs of two recoding/reproduction faces.

" unknown PAC rule " can be used to the number of regions on the console panel.For example, " unknown PAC rule " but record controllability in display disc directorial area (DMA) district (can comprise or can not comprise the dish definition structure (DDS) in INFO1,2,3 and/or 4 districts), but the record controllability on the spare area in the designation data district, can indicate the record in control data (CD) district in INFO1,2,3 and/or 4 districts and/or reproduce controllability, but record on the user data area in the designation data district and/or reproduction controllability, and/maybe can indicate the record on " PAC bunch " in INFO1 and/or 2 districts and/or reproduce controllability.

In the example of user data area, distinguish (following will the description) if defined as the section in " special use " on dish zone, then user data area can be used as indication section district and may not be record on the whole user data area and/or the field of reproducing controllability.

Write controllability and be only applicable to rewritable disk BD-RE and BD-R, and the controllability of writing in the replacement district in defectiveness district also is applicable to rewritable disk BD-RE and BD-R.Therefore, various example feature of the present invention may depend on the rewritten feature of high density (light) dish.

Use above-mentioned technology, " unknown PAC rule " field makes it possible to be the zone of control on the driver given disc of mismatched.In addition, above-mentioned technology is also applicable to the visit of controlling according to user's selection the specific physical region on the dish.

Get back to Fig. 4, the number of times that " PAC the is New count more " field among Fig. 4 can indicate PAC to upgrade can write ' 0 ' at the very start, and/or can be incremented 1 when PAC is rewritten.

In addition, in Fig. 4, " entire--disc--flags " field can be used as indication PAC and be applicable to the field in whole panel, and " hop count " field is the field of the number that can represent that section that PAC is suitable for is distinguished.

In one exemplary embodiment, section from maximum number a to PAC that can distribute.In one exemplary embodiment, can distribute to PAC mostly be 32 sections most, and the information on the section of being distributed can be written to " section 0 " that 8 bytes are respectively arranged and arrive in " section 31 " field.Each section first physical sector number (PSN) and tail PSN of distinguishing of being distributed that is write down above can comprising of " section 0 " to " section 31 " field.

Section is below described in more detail.Fig. 6 illustrates according to the section district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 6, as needs, the section district of maximum number (for example, 32) can be arranged on the high density compact disc, be used for it is used PAC.The section district of maximum number can be from " section 0 ".

Can begin to distribute the most nearly section of maximum number from " section 0 " by ascending order, so that manage by a PAC, even and a plurality of PAC are arranged, also should not surpass the maximum number of section by the sum in the section district of these PAC management.

In one example, CD drive can be come the position in identification section district by a PSN who writes the starting position that is used to indicate the section district that is distributed on " section " field and the tail PSN that is used to indicate section rearmost position of being distributed of distinguishing.

In a kind of exemplary configuration, distributed a plurality of sections all do not need overlapping, and can bunch boundary specify beginning and end position.

Thus, in the exemplary embodiment, the present invention can provide a plurality of PAC to manage some (for example, 32) section district, and this will describe in more detail following.

Fig. 7 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 7, can have in 32 bunches the PAC district (for example, the PAC district of INFO2 or INFO1) at one to write a plurality of effective PAC, each PAC has common bunch size.

As mentioned above, effectively PAC can be defined as comprising the district of various types of PAC information, and can provide (for example, 32 of maximum numbers on dish, or be 64 in the situation of dual layer discs) effective PAC, each PAC has one bunch size can distributing to a PAC district.

As mentioned above, the driver versions that effective PAC can have according to above-noted the CD of PAC (is for example selected PAC_ID in advance, PAC_ID=54535400h), if and PAC_ID is 00 00 00 00h, then can write down the PAC of FF FF FF FFh above the remainder in PAC district, and the PAC district that was not recorded is still Unrecorded PAC district.

In one exemplary embodiment, if in a PAC district defective takes place, then will write PAC in the above, this PAC can be written in the location on next door, defectiveness district.Defective may be caused by the damage or the pollution of panel surface, and when in the time will writing the location generation defective of PAC in the above, PAC information can be written on the zone on next door, defectiveness district.

Being described with reference to Figure 8 can be to the example that has about a plurality of effective PAC of the PAC district distribution of various types of information of the zone of control of dish.

Fig. 8 illustrates the section district by the management of a plurality of PAC district on the dish (for example, high density compact disc) according to one exemplary embodiment of the present invention.

Referring to Fig. 8, can on dish, specify the controllable segment district by using a plurality of PAC.That is, can come a control section 0Seg#0 and a section 1Seg#1 district by the PAC#0 on the dish, come a section 0Seg#0 and a section 1Seg#1 on the console panel by PAC#1, and come section 0Seg#0 on the console panel by PAC#2.

In this example, although all sections district that PAC managed is not overlapping, the section district that different PAC managed may be overlapping, as shown in Figure 8.

In the overlapped example in the section district that different PAC managed, may have the conflicting situation of description of the control of PAC on the overlapping region, this also will be described with reference to Figure 8.

Referring to Fig. 8, constitute first overlay region by the section #0 district of PAC#0 management and by the section #0 area overlapping that PAC#1 manages, and constitute second overlay region by the section #1 district of PAC#0 management and by the section #0 area overlapping that PAC#2 manages.

As shown in the figure, may have the overlay region by the section of different PAC management, and the control in overlapping section district may be contradictory, for example, PAC#1 may be read-only to the control of section #0, and PAC#0 may be a read/write to the control of section #0.

According to one exemplary embodiment of the present invention, when the section of being managed by different PAC is overlapping, can uses several diverse ways and control overlapping areas.In one exemplary embodiment, can use OR-function, if promptly a PAC does not allow (that is, repelling) certain control operation, then no matter whether another PAC allows this operation, and this operation is not allowed to.In other words, if two (or owning) PAC all allow certain control operation, then allow this overlapping areas is carried out this specific control operation.

For example, in above-mentioned exemplary situation, because the control of being managed by PAC#0 to section #0 is not only to write but also read, and the control of being managed by PAC#1 to section #0 is read-only, so the control that overlapping section is distinguished can be read-only.In other words,, and do not allow to write and only allow to read, then will not allow to write and only allow to read for overlapping section district for a section #0 by the PAC#1 management if not only allow to write but also allow to read for a section #0 by PAC#0 management.Table 1 shows above-mentioned example.

	?PAC#0	?PAC#1	Overlapping section district
	?PAC#0	?PAC#1	Overlapping section district	Read	0 (permission)	0 (permission)	0 (permission) ← 0 or 0
Write	0 (permission)	Not 1 (not allowing)	1 (not allowing) ← 0 or 1	Read	0 (permission)	0 (permission)	0 (permission) ← 0 or 0

Table 1

In another exemplary embodiment, can use " with " function, if promptly a PAC allows certain control operation, then no matter whether another PAC allows this operation, this operation all is allowed to.For example, in another exemplary embodiment, if not only allowed to write but also allow to read by the control to section #0 of PAC#0 management, and the control of being managed by PAC#1 to section #0 is read-only, and then the control to overlapping section district is read and write.Table 2 shows above-mentioned example.

	?PAC#0	?PAC#1	Overlapping section district
	?PAC#0	?PAC#1	Overlapping section district	Read	0 (permission)	0 (permission)	0 (permission) ← 0 and 0
Write	0 (permission)	Not 1 (not allowing)	0 (permission) ← 0 and 1	Read	0 (permission)	0 (permission)	0 (permission) ← 0 and 0

Table 2

In other exemplary embodiment, also can realize other Boolean calculation function (or its combination), understand above-mentioned discussion to exemplary embodiment of the present invention after, this will be conspicuous.

In another embodiment of the present invention, in the example scenario overlapped, can use another kind of method, wherein will follow control by the PAC definition of new appointment by the section district of different PAC management.

In an illustrative examples, if PAC#1 is in time than the more closely appointed PAC of PAC#0, and PAC#2 is nearer than PAC#1 in time PAC, if the section area overlapping that these PAC managed, then the PAC of new (or more recent) appointment can control, and this will be described with reference to Figure 8.

In the example of Fig. 8, if by the section #0 district of PAC#0 management and the section #0 area overlapping of being managed by the PAC#1 district, and the control of PAC#0 is read-only, and the control of PAC#1 is write and read, then the control of overlapping region is write and read, and this is by PAC#1, promptly newer PAC definition.

This control method can be called as " new PAC rule ", be different from the above exemplary embodiment OR-function with " with " function.

In other exemplary embodiment, control can define according to the PAC (or its combination) rather than the PAC of new appointment existing or early, understand above-mentioned discussion to exemplary embodiment of the present invention after, this will be conspicuous.

Fig. 9 illustrates the block diagram according to the optical recording/reproducing apparatus of one exemplary embodiment of the present invention.

Referring to Fig. 9, this optical recording/reproducing apparatus can comprise: data recording/reproducing device 10 is used for CD executive logging/reproduction; And main frame or controller 20, be used for controlling recording/transcriber 10.In one exemplary embodiment, data recording/reproducing device 10 can play the effect of above " CD drive " discussed in conjunction with the many exemplary embodiments of the present invention.

In one exemplary embodiment, main frame 20 provides the write command write to the specific region of CD or the reproduction instruction of reproducing from the specific region of CD to data recording/reproducing device 10, and data recording/reproducing device 10 is in response to carry out record to this specific region/from the reproduction of this specific region from the instruction of main frame 20.

Data recording/reproducing device 10 also can comprise: interface section 12, be used for executive communication, such as with the data of main frame 20 and the exchange of instruction etc.; Pick up part 11, be used for directly to CD write/from optical disk reading; Data processor 13 is used for from picking up part 11 received signals and recover required signal value, or the signal that will write is modulated to the signal that can be written on the CD; Servo segment 14 is used for control and picks up part 11 exactly from optical disc reading signal, or write signal on CD exactly; Storer 15 is used for storing various types of information, comprises management information and data temporarily; And microcomputer 16, be used for the various piece of controlling recording/transcriber 10.

A kind of illustrative methods of using this exemplary optic recording/reproducing device to write down PAC on high density writable optical disc below will be described.

In case CD is inserted in the optical recording/reproducing apparatus, management information just can be read from CD, and is stored in the storer 15 of data recording/reproducing device 10, so that use in optical disc recording/reproducing.

Under this state, if the user wants to write on the specific region of CD, then main frame 20 with this as write command, thereby provide about the information of required writing position and the data that will write to data recording/reproducing device 10.

Microcomputer 16 in the data recording/reproducing device 10 can receive write command, management information from be stored in storer 15 determines whether the disc area that main frame 20 is wanted to write is the defectiveness district, and/or writes according to carrying out data from the write command of main frame 20 on the zone that is not the defectiveness district.

If determine the new feature that the data recording/reproducing device that comprised previous version is not provided write on whole the dish or the specific region of dish, thereby cause the data recording/reproducing device of previous version not understand, or if according to the set restriction of user, be intended to limit such as writing to the specific region of dish or the functions such as specific region reproduction from coiling, then the microcomputer 16 of data recording/reproducing device 10 can write this regional control information as " unknown PAC rule " in the PAC district on the dish.The microcomputer 16 of data recording/reproducing device 10 also can write such as the PAC_ID that writes state and as the PAC information such as segment information of control information to the specific region of dish.

As needs, PAC information can be written in one bunch size among a plurality of effective PAC in the PAC1 district in INFO1 district, and the copy that is recorded in the PAC in the PAC1 district can be used as backup and is written in the PAC2 district of INFO2.

Microcomputer 16 can to servo 14 and data processor 13 positional information and the data in the zone or the PAC district of data have been provided above providing, thereby can finish and write by picking up the desired location of part 11 on CD.

Thus, a kind of recoding/reproduction has write the high density compact disc of PAC information by above-mentioned illustrative methods method below will be described.

In case CD is inserted in the optical recording/reproducing apparatus, management information just can be read from CD, and is stored in the storer 15 of record and transcriber 10, so that use in video disc recording and reproduction.

Information in the storer 10 can comprise the positional information in each included in the PAC district on dish district.Especially, the position of the effective PAC in the PAC district can be learnt from dish definition structure (DDS) information.After the position of having known effective PAC, the PAC_ID field that just can check PAC is to verify whether this PAC_ID is the PAC_ID that can identify.

If PACI_ID can identify, it is identical or do not have independent writing/reproduce restriction that then this method determines to write the version of the version of the record of data and transcriber and current record and transcriber on dish, and according to the instruction executive logging/reproduction from main frame 20.

If PAC_ID can not identify, it is different with the version of current record and transcriber that then this method determines to write the version of the record of data and transcriber on dish, and, come executive logging/reproduction according to instruction from main frame with reference to the recoding/reproduction restricted area on the dish that comprises " unknown PAC rule " and " section ".In the situation overlapping by the section of different PAC management, the record of overlapping region and/or the control information of reproduction are to use one or more above-mentioned exemplary rules, and determine based on the control that different PAC allowed.

Microcomputer 16 subsequently can according to from the instruction of main frame to servo 14 and data processor 13 positional information and data are provided, thereby can finish recoding/reproduction by picking up part 11 desired location place on CD.

As mentioned above, the method and apparatus that writes down in high density write-once CD and reproduce according to exemplary embodiment of the present invention can have following one or more advantage.

At first, can allow above-noted the data area of user data that more sane protection is arranged, for example, can prevent or reduce unauthorized access (for example, invading) by the dish accessible area of using PAC to define the driver of different editions.

The second, by the whole data field of use and management dish or the PAC of the part of data field, can improve to the high density compact disc record data and/or reproduce the effect of data from high density compact disc.

Industrial usability

Those skilled in the art it is evident that, can carry out various modifications and variations and not deviate from the spirit or scope of the present invention the exemplary embodiment of the invention described above.Therefore, the present invention is intended to cover its modification and modification, as long as they are within the scope of appended claims and equivalence techniques scheme thereof.

Claims

1. a control comprises the method for the visit of recording medium:

Identify first access control information and second access control information, described first and second access control informations comprise segment data and control data, described segment data is used at least one section district, identifying user data field, and described control data is used to control the visit that described at least one section district is carried out; And

Control visit according to overlapping rule to overlapping region in described at least one section district.

2. the method for claim 1 is characterized in that, described overlapping rule be " or " rule.

3. method as claimed in claim 2 is characterized in that, if described first and second access control informations all allow visit, then allows the visit of described overlapping region, and described access control information comprises the described segment data that is used to identify described overlapping region.

4. method as claimed in claim 2, it is characterized in that, if any one in described first and second access control informations do not allow to visit described overlapping region, then do not allow the visit of described overlapping region, described access control information comprises the described segment data that is used to identify described overlapping region.

5. the method for claim 1 is characterized in that, described visit comprises read and/or write.

6. the method for claim 1 is characterized in that, described overlapping rule is the most recent rule.

7. method as claimed in claim 6 is characterized in that, controls according to the most recent access control information to the visit of described overlapping region.

8. the method for claim 1 is characterized in that, each described access control information comprises unknown rule, and described unknown rule is specified the opereating specification of the driver that can not discern described access control information.

9. one kind to recording medium recording and/or from the method for recording medium reproducing, comprising:

Identify first access control information and second access control information, each access control information comprises segment data and control data, described segment data is used at least one section district, identifying user data field, and described control data is used to control the visit that described at least one section district is carried out; And

According to overlapping rule in described at least one section district overlapping region record and/or reproduce from this overlapping region.

10. one kind is used for comprising to the recording medium recording with data field and/or from the equipment of recording medium reproducing with data field:

Optical devices; With

Controller, be used for controlling described optical devices according to first access control information and second access control information, described first access control information and second access control information comprise segment data and control data, described segment data is used for section district, identifying user data field, described control data is used to control the visit that described section district carried out

Wherein, described controller controls to the visit of overlapping region in the described section district according to overlapping rule.

11. equipment as claimed in claim 10, it is characterized in that, if described first and second access control informations all allow visit, then described controller allows the visit of described overlapping region, and described access control information comprises the described segment data that is used to identify described overlapping region.

12. equipment as claimed in claim 10, it is characterized in that, if any one in described first and second access control informations do not allow to visit described overlapping region, then described controller does not allow the visit of described overlapping region, and described access control information comprises the described segment data that is used to identify described overlapping region.