The application is that the application number submitted on March 5th, 2004 is that 03800997.8 (international application no is PCT/KR03/01096, international filing date is on June 4th, 2003), denomination of invention is divided an application for " structure of the link area that forms on high-density read-only recording medium and manufacturing/reproducting method thereof and equipment ".
Summary of the invention
In the exemplary embodiment, the present invention proposes a kind of recording medium with identical or similar physical record form, such as high density and/or read-only recording medium, it comprises the reproduction compatibility of link area with improvement and high density and/or re-writable recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that has synchrodata in link area, such as high density and/or read-only recording medium, the bit mode of the synchrodata in link area is different from the synchrodata that writes in the data recorded area, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that has physical address and frame synchronization in link area, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium with the link area that wherein writes enciphered data, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that comprises with the link area of identical with master data or similar mode ciphered data that has, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium with link area of the value ciphered data that comprises that the physical piece that is associated by the Frame that uses in the previous and/or ensuing physical cluster is derived, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that has pseudo-data in its link area, and such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that comprises with the link area of the data of error-recoverable format record that has, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind ofly to have at the recording medium corresponding to the link area in the zone of the importing of re-writable recording medium and/or leading-out zone, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium with link area of the record frame that comprises required size, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that writes on the useful information in the record frame that has, and such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium with the link area between the data division of record, such as high density and/or read-only recording medium, wherein each link area comprises at least one synchronizing signal of indicating link area, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that writes on the synchronizing signal in the link area that has, such as high density and/or read-only recording medium, synchronizing signal in this link area is different from the synchronizing signal that writes in the data division, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind ofly to have by the recording medium that writes on the physical address ciphered data before or after the link area, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind ofly to have by the recording medium of writing frame synchronization ciphered data therein, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, a kind of recording medium that has by the value ciphered data that provides is provided in the present invention, and such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes the recording medium of the pseudo-data that write down in a kind of record frame that has in link area, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording of information medium that indication writes on the physical address in the record frame that has, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that writes on the user data in the record frame with error correcting code (ECC) piece that has, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind ofly to have in the record frame that writes in the link area, with the recording medium of the data handled with the identical or similar mode of the user data in Frame, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind ofly to have corresponding to the importing of re-writable recording medium and leading-out zone and wherein write the zone of definition of recording unit block (RUB) and the recording medium of the record frame of the size of definition, such as high density and/or read-only recording medium, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind ofly to have corresponding to the importing of re-writable recording medium and leading-out zone and wherein write the zone of definition of RUB and the recording medium of the record frame of the size of definition, such as high density and/or read-only recording medium, the frame synchronization that wherein has unique bit mode is written at least one record frame, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind ofly to have corresponding to the importing of re-writable recording medium and leading-out zone and wherein write the zone of definition of RUB and the recording medium of the record frame of the size of definition, such as high density and/or read-only recording medium, the frame synchronization that wherein has unique bit mode is provided at least twice, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind ofly to have corresponding to the importing of re-writable recording medium and leading-out zone and wherein write the zone of definition of RUB and the recording medium of the record frame of the size of definition, such as high density and/or read-only recording medium, the frame synchronization that wherein has unique bit mode is written at least one record frame, and the present invention also proposes to be used to form, to write down and reproduce the equipment and the method for read-only recording medium.
In the exemplary embodiment, the present invention proposes a kind of recording medium that comprises the data field of the link area that comprises at least two data parts and link adjacent data part, and this link area comprises pseudo-data.
In a further exemplary embodiment, the present invention proposes a kind of method that forms recording medium, it comprises the adjacent data part of formation link area with the link data district, writes in the link area to link adjacent data division at the recording medium identifying recording layer and with pseudo-data simultaneously.
In a further exemplary embodiment, the present invention proposes a kind of method from the recording medium reproducing data, and it comprises the use link area to reproduce data, and this link area comprises the pseudo-data of the adjacent data part in link data district at least.
In a further exemplary embodiment, the present invention proposes a kind of method at the recording medium identifying recording layer, and it comprises the use link area with record data, and this link area comprises the pseudo-data of the adjacent data part in link data district at least.
In a further exemplary embodiment, the present invention relates to a kind of equipment from the recording medium reproducing data, this equipment uses link area to reproduce data, and this link area comprises the pseudo-data of the adjacent data part in link data district at least.
Embodiment
In order to understand the present invention fully, its preferred embodiment is described below with reference to the accompanying drawings.
At first, describe in detail according to the link area of the high-density recording media of exemplary embodiment structure of the present invention and according to exemplary embodiment of the present invention with the related Data recording technique of this link area, that is, data form technology.
Hereinafter, use term " to write ", " record " and " formation " represents identical implication to read-only recording medium such as read-only medium, and the frame that will form in link area is called linking frames or record frame.
(1) structure of link area
Recording medium such as high density and/or read-only recording medium; for example; BD-ROM according to exemplary embodiment structure of the present invention has the physical format of describing with reference to Fig. 1 and 2 that is used for high density, re-writable recording medium, and it is made up of Lead-In Area, physical cluster, leading-out zone and protected location.
Shown in Fig. 3 a, according to the Lead-In Area of exemplary embodiment of the present invention by protected location " Guard_1 " with comprise that the preamble " PrA " of two synchrodatas forms.Each synchrodata comprises 24 bit synchronous main bodys and 6 bit synchronous ID.
Though shown in Fig. 2 a, the synchronous ID of the synchrodata in the preamble of BD-RE is " 000100 " and " 010000 ", and according to the preamble of the BD-ROM of exemplary embodiment of the present invention structure comprise two its ID be FS0 (" 000001 ") (Sync_3) and FS6 (" 010000 ") synchrodata (Sync_2).Synchrodata Sync_3 can be placed on the front of synchrodata Sync_2.
In addition, shown in Fig. 3 b, comprise that according to back " PoA " synchronously in the leading-out zone of the BD-ROM of exemplary embodiment of the present invention structure its ID is FS4 (" 000100 ") synchrodata (Sync_1).This and BD-RE different are that the synchronous ID that will have FS0 (" 000001 ") writes BD-RE back synchronously in.
In the situation of BD-RE, shown in Fig. 1 c,, then form a pair of importing and leading-out zone if create two RUB.This comprises that to importing and leading-out zone (corresponding to link area) its record is three synchrodatas of " Sync_1 ", " Sync_2 " and " Sync_3 " in proper order.The record of this BD-ROM is " Sync_3 " in proper order, and " Sync_2 " and " Sync_1 " is with the reversed in order of BD-RE.
Therefore, though the BD-ROM of three structures is similar with BD-RE or identical on the physical record form according to the present invention, it can be distinguished with BD-RE because the different synchrodata in link area writes order.In addition, can determine easily whether current region is the link area of BD-ROM based on the layout of synchrodata.
In the above-described embodiments, this importing, derivation and protected location " Guard_3 " zone may comprise the information that writes down that is similar on the corresponding region of BD-RE.
Another exemplary link zone that is used for BD-ROM is shown in Fig. 4 a.Shown in Fig. 4 a, in the exemplary embodiment of BD-ROM, two linking frames (1932 channel bit) of identical size are formed single link area.On the contrary, in the situation of BD-RE, provide 1104 different in size bits to import and 2760 bit export areas, but also form single link area.
Two link area possibility structures are identical, and each frame is made up of 30 channel bit frame synchronization, 9 byte physical addresss, 114 bytes of user data and 32 byte parities.
The user data of this 114 byte may comprise multiple other information, for example, make be difficult to or can't illegal copies be recorded in content among the BD-ROM, such as the anti-piracy information of film to other medium, perhaps can be used for the control information of servo control operation.
Fig. 4 b shows another exemplary embodiment of the present invention.Link area in this exemplary embodiment is made up of (1932 channel bit) linking frames of two identical sizes, and each frame is made up of 30 channel bit frame synchronization, 9 byte physical addresss, 146 bytes of user data.Compare with Fig. 4 a, the difference of the embodiment of Fig. 4 b is that it does not have parity.
Useful information can be write the user data space of 146 bytes.This useful information can comprise make be difficult to or can't illegal copies be recorded in content among the BD-ROM, such as the anti-piracy information of film to other medium, perhaps be used for the control information of servo control operation.
Fig. 4 c shows another exemplary embodiment of the present invention.Link area in this exemplary embodiment is made up of (1932 channel bit) linking frames of two identical sizes, and each frame is made up of 30 channel bit frame synchronization and 155 bytes of user data.Comparison diagram 4a, the difference of the embodiment of Fig. 4 c is that it does not have physical address and parity.This embodiment is different with Fig. 4 b also, are that it does not have physical address.
Fig. 4 d shows another exemplary embodiment of the present invention.Link area in this exemplary embodiment by 30 channel bit guiding frame synchronization, 3714 channel bit link parts, two 30 channel bit after synchronously, and two be respectively that the repeat pattern of 40 and 20 channel bit is formed.This 3714 channel bit link part can be made up of three linking frames and the pseudo-data of 4 bits.
Though Fig. 4 a shows the exemplary embodiment of link area, any other layout based on said structure that can use those of ordinary skills to know to 4d.
The form of data with the ECC module write in the physical cluster, and seven above-mentioned frame synchronization FS0-FS6 are used in the ECC module usually.
In exemplary embodiment of the present invention, at least one in two linking frames shown in Fig. 4 a-4d used new frame synchronization " FS n ", and they are different on synchronous ID with seven frame synchronization that are used for BD-RE.As shown in Figure 5, the synchronous ID of this new frame synchronization " FS n " be " 100101 " (FS7), " 101010 " (FS8), " 010101 " (FS9), perhaps " 101001 " (FS10).
All four example synchronization candidates satisfy the constraint condition of transition shift, and it is specific for BD-RE, and are not shorter than 2 bits on bit mode.
In the exemplary embodiment of Fig. 4 a, frame synchronization FS0 is write in first linking frames, and frame synchronization " FS n " is write in second linking frames.
The data that write down on BD-ROM must satisfy " forbidding RMTR (moving limited conversion) " constraint condition of 17PP (parity protection) modulation code, and this condition is the data recording standard for the BD-RE definition.
The RMTR constraint condition of forbidding that guarantees the stable detection of RF signal illustrates minimum running length 2T, that is, " 01 " or " 10 " can not repeat continuously above six times.Therefore, preferably use the frame synchronization that in new frame synchronization, has little conversion frequency, that is, " 100101 " (FS7) or " 101001 " (FS10), make the successive bits string satisfy constraint condition.To be described in more detail the use of frame synchronization with reference to figure 6a-6b.
First situation shown in Fig. 6 b is the exemplary embodiment of Fig. 3 A and 3B.In this exemplary embodiment, at two 1932 channel bit records of link area record frame, and each record frame is made up of frame synchronization, physical address, user data and parity.Two at least one that write down in the frame comprise the frame synchronization " FS n " of redetermination.
For example, frame synchronization " FS0 " writing first frame synchronization that will have its markers (ID) " 000001 ", and the new frame synchronization " FS n " that is " 010101 ", " 101010 ", " 100101 " or " 101001 " with its sync id pattern writes in second frame synchronization.
Using its sync id pattern is in the incident of new frame synchronization " FS n " of " 010101 ", " 101010 ", " 100101 " or " 101001 ", shown in Fig. 6 a, has unencrypted initial data " 00 " at frame synchronization " FS n " 9 byte physical addresss afterwards.This is because the RMTR constraint condition that satisfies for the defined 17PP modulation code of data recording on BD-RE is useful.
For example, if use the new frame synchronization FS7 of sync id pattern with " 100101 ", and, simultaneously, next bits of user data is " 01110111 ", and its bit by the modulation of the 17PP modulometer shown in Fig. 7 d is " 010101010101 ", comprises that the bit of the last modulation of sync id pattern is formed " 100101010101010101 ", and wherein 2T pattern (one 0 (10) pattern between adjacent two 1) occurs for continuous seven times.
But if user data comprises " 00 " at its head, then above-mentioned instances of user data becomes " 0001110111 ", and its 17PP modulation bit string is " 010100101010101 ".Therefore, the final bit with sync id pattern is formed " 100101010100101010101 ", three 2T patterns wherein, and a 3T and four 2T mode continuous occur.
Second situation shown in Fig. 6 b is the exemplary embodiment of Fig. 4 A.In this exemplary embodiment, two 1932 channel bit records of record frame in link area, and each record frame is made up of frame synchronization, physical address, user data and parity.At least one in the frame of two records comprises another in the frame synchronization " FS n " of frame synchronization FS10 (" 101001 ") and redetermination.
For example, the frame synchronization FS0 that will have its markers " 000001 " writes first frame synchronization, is that the new frame synchronization FS10 of " 101001 " writes in second frame synchronization simultaneously with its sync id pattern.
In the incident of using new frame synchronization " FS10 ", the RMTR constraint condition of the defined 17PP modulation code of the data recording on BD-RE is satisfied automatically.Therefore, ensuing physical address need not begin with " 00 ".
For example, if use new frame synchronization " FS10 " with sync id pattern " 101001 " and, simultaneously, next bits of user data is " 01110111 ", and its bit by the modulation of the 17PP modulometer shown in Fig. 7 d is " 010101010101 ", the Bit String that then has the last modulation of sync id pattern is formed " 101001010101010101 ", one of them 2T, and a 3T and six 2T patterns occur.
The 3rd situation shown in Fig. 6 b is the exemplary embodiment of Fig. 4 B.In this exemplary embodiment, two 1932 channel bit records of record frame in link area, and each frame is made up of frame synchronization, physical address, user data and parity.And two record frames all comprise the frame synchronization " FS n " of redetermination.
For example, among frame synchronization FS7 (" 010101 "), the FS8 (" 101010 ") of first and second frame synchronization use redetermination and the FS9 (" 100101 ").
In the incident of using new frame synchronization FS7, FS8 or FS9, shown in Fig. 6 a, 9 byte physical addresss after frame synchronization FS7, FS8 or FS9 have unencrypted initial data " 00 ".Here it is, as previously mentioned, and to better meet the RMTR constraint condition of the defined 17PP modulation code of data recording on BD-RE.
Under the situation of using new frame synchronization FS7 (" 100101 "), can satisfy RMTR constraint condition by after frame synchronization, writing user data space with the data that are not " 01110111 ".
The 4th situation shown in Fig. 6 b is the exemplary embodiment of Fig. 4 C.In this exemplary embodiment, in link area, write down two 1932 channel bit record frames, and each record frame is made up of frame synchronization, physical address, user data and parity.And for example, two record frames all comprise the frame synchronization FS10 (" 101001 ") of redetermination.
Use new frame synchronization " FS10 " to be used for the incident of two Frames therein, the RMTR constraint condition of the defined 17PP modulation code of the data recording on BD-RE automatically is satisfied.Therefore, the physical address after each frame synchronization need not begin with bit " 00 ".
If as the frame synchronization " FS n " of use redetermination described above different because new frame synchronization and those use in physical cluster, can be very easy to and definite accurately current region whether in link area.
For example, using frame synchronization to make up to determine in the situation of current region, because by writing on " the FS n " in the link area and writing on FS4, FS4 in the 29th to the 31st record frame (record frame #28-#30) in formerly the physical cluster respectively and frame synchronization that FS2 forms makes up and becomes FSn-FS4 or FSn-FS2, obviously be different from the combination of forming by the frame synchronization that writes in the physical cluster, can determine that accurately current region is whether in link area based on frame synchronization combination.
Sum up exemplary embodiments more described above below.
If applied enough constraint condition to will just in time writing on frame synchronization data afterwards, can use any four frame synchronization so.
For example, in the situation after physical address is write on frame synchronization,, can use frame synchronization FS8 and FS9 so if physical address always has the preamble of bit " 00 ".
Even in the situation that does not write physical address, if with specified byte, for example, what did not encrypt " 08h " (00001000) just in time writes on after the frame synchronization, to be placed on after the frame synchronization from the Bit String " 000100100100 " that " 08h " modulated by the 17PP modulation, make that can ignore RMTR constraint condition uses any four new frame synchronization FS7-FS10.
To write in the linking frames such as one frame synchronization among four new frame synchronization FS7-FS10, and among the known frame synchronization FS0-FS6 one is written in other linking frames.New frame synchronization can used in the situation 3 of Fig. 6 and two linking frames shown in the situation 4.
If in linking frames, use at least one new frame synchronization " FS n ", as shown in Figure 9 comprise optical pickup apparatus 11, VDP system 12, and the Disc player of D/A converter 13 can detect when reproducing the data of record from BD-ROM, the current frame that reads is link area or in data division (physical cluster).
In the situation of BD-RE, independent the comprising of 31 record frames during seven different frames are synchronously.But seven frame synchronization are not enough to diacritic definition 31 record frames, and frame synchronization or frame in the feasible record frame formerly are used for identifying current record frame and the frame synchronization in present frame.
In other words, record frame N can be by continuous the discerning of its frame synchronization and formerly record frame N-1, N-2 and/or the frame synchronization among the N-3 synchronously.In other words, though do not detect one or two previous synchronous N-1 and/or N-2, last detected synchronous N-3 can be used to identification record frame N and its synchronously.
For example, suppose that the current record frame is the 7th, that is, record frame #6, shown in Fig. 1 d, its frame synchronization is FS1.
But frame synchronization FS1 also is written among frame #1, #23 and the #24, makes previous detected frame synchronization be used for identifying present frame.Current detection to frame synchronization FS1 and previous detected frame synchronization in frame #5, #4 and #3 respectively or FS4, FS1 and/or FS3 make and can indicate present frame synchronously.
Because the layout of frame synchronization is as described above is used for the identification data frame, can realize using the frame synchronization sequence from previous Frame to the record frame link area of the frame synchronization of redetermination.This will describe in detail to 7c with reference to figure 7a.
Fig. 7 a shows applicable according to an exemplary embodiment of the present invention frame synchronization sequence to 7c.
Fig. 7 a is the example at first situation shown in Fig. 6 a and 6b, and Fig. 7 b and 7c are respectively applied for the FS7-FS7 of the 3rd situation shown in Fig. 6 b and the synchronous right example of FS7-FS8.
In the situation of the frame synchronization of use FS0 shown in Fig. 7 a and FS7, shown in situation (1), frame N, N-1 before having the frame #0 of frame synchronization FS0 and the frame synchronization of N-3 are FS7, FS0 and FS2 in order.This frame #0 is corresponding to first address location of RUB.Shown in situation (2), have frame synchronization FS2, FS4 and FS4 in order at second three frames before frame #0 of going.This frame #0 is corresponding to the intermediate address unit of RUB.Shown in situation (3), three frames before frame #1 have frame synchronization sequence FS0, FS7/FS2 and FS4, make first address location or the temporary location of this frame #1 corresponding to RUB.In addition, shown in situation (4), the frame synchronization of three frames before frame #2 is FS1, FS0 and FS7/FS2 in order, makes first or the temporary location of this frame #2 corresponding to RUB.
Shown in " A " mark situation of Fig. 7 a, corresponding to the frame #0 and the frame synchronization sequence that has identical previous frame according to the frame #31 (first linking frames) of exemplary embodiment of the present invention of the intermediate address unit of RUB.Therefore, will be difficult to detect the beginning of link area, and adopt FS0 and FS7 to will not being suitable solution.
Shown in Fig. 7 b, only use FS7.Shown in the situation among Fig. 7 b (1), the frame synchronization sequence before frame #0 is FS7/FS2, FS7/FS4 and FS2/FS4, and frame #0 is first address location or the temporary location of RUB.Shown in situation (2), the frame synchronization sequence before frame #1 is FS0, FS7/FS2 and FS7/FS4, and frame #1 is first or the temporary location of RUB.In addition, shown in situation (3), the frame synchronization sequence before frame #2 is FS1, FS0 and FS2, and frame #2 also is first or the temporary location of RUB.
But shown in " B " mark situation of Fig. 7 b, first linking frames (frame #31) has identical frame synchronization sequence at frame N with the N-3 place with second linking frames (frame #32) according to an exemplary embodiment of the present invention, and this may have problems in the definition link area.But two linking frames have the frame synchronization FS7 of redetermination, and the situation of this FS7-FS7 will be more prone in the FS0-FS7 situation than Fig. 7 a aspect the detection link area.
Fig. 7 c shows the situation of using FS7 and FS8.Shown in situation (1), the frame synchronization sequence before frame #0 is FS8/FS2, FS7/FS4 and FS2/FS4, and frame #0 is first and the intermediate address unit of RUB.Shown in situation (2), the frame synchronization sequence before frame #1 is FS0, FS8/FS2 and FS7/FS4, and frame #1 is first or the temporary location of RUB.
In addition, shown in situation (3), the frame synchronization sequence before frame #2 is FS1, FS0 and FS7/FS2, and frame #2 also is first and the temporary location of RUB.
Shown in Fig. 7 c, the use of FS7 and FS8 is not presented in the identical previous frame synchronization sequence before the arbitrary frame, that is, the previous frame synchronization sequence before the arbitrary frame is unique, therefore, can not have problems when detecting link area.
Therefore, for the link area of exemplary embodiment structure according to the present invention, using FS7 and FS8 is good select a pair of.In addition, illustrate that frame synchronization FS7 and FS8 satisfy RMTR constraint condition as the front.Though in this exemplary embodiment, select FS7 and FS8 sign link area and/or satisfy RMTR constraint condition, as known to persons of ordinary skill in the art, can use other combination arbitrarily.
Fig. 8 reproduces the process flow diagram of the exemplary embodiment of the method for the recording medium of structure according to an exemplary embodiment of the present.
Comprise the BD-ROM (S81) of the link area of structure according to an exemplary embodiment of the present if be written into, the management information that writes on BD-ROM that at first will be used for reproducing control is read in storer (S82).Introduce in the zone if management information has been write on, it was read by optical pickup apparatus in the initial preparatory stage.Then, under the control of control module, begin to reproduce master data (S83).In the reproduction process, detect frame synchronization (S84).If detect, determine whether detected be synchronous (S85) that writes in the main-data area synchronously.If have optical disc recording/reproducing equipment and detected synchronous the comparing synchronously of storage that reach of the synchronous FS0-FS8 that is stored in wherein, may make this and determine.
If determining detected is (S86) among synchronous (FS0-FS6) that writes in the main-data area synchronously, then continue reproduction.But, if determine detected of not belonging to synchronously in synchronous (FS0 one FS6), mean that then it is the synchronous FS7 or the FS8 of redetermination, think that its current location is link area (S87), and determine that afterwards this zone is in first linking frames or in second linking frames (S88).If in first linking frames, then will go out (S89) at the data decryption after its frame synchronization.Otherwise, think that current location is second linking frames, and afterwards will be just in time the data decryption after the frame synchronization of data go out (S90).
Therefore, Disc player comprises optical pickup apparatus 11, VDP system 12 and D/A converter 13 as shown in Figure 9, when being placed on BD-ROM wherein, it can detect first and second linking frames (record frame #k+1, #k+2) physical address among and user data at BD-ROM more accurately.Especially, be used for anti-piracy or servo-controlled Useful Information if user data comprises, Disc player is operated to use Useful Information.
As mentioned above, can by detect and relatively the frame synchronization of redetermination be more prone to and determine that fast optical pickup apparatus current location thereon is in link area or in main-data area.
(2) physical address
In the linking frames structure shown in Fig. 4 a, physical address is write in each the record frame of link area shown in Figure 10 a and have three kinds of situations at least.First situation is that the AUN with the physical cluster #k+1 behind the most close frame writes in two linking frames, and second situation is that AUN with the physical cluster #k before the most close frame writes in two linking frames.
In the 3rd situation, the AUN of the physical cluster #k before the most close first linking frames is write first linking frames and the AUN of the physical cluster #k+1 after the most close second linking frames is write second linking frames.
Will be shown in Figure 11 a by 4 byte addresses, 1 byte keeps and 4 byte parities are formed physical address encode by the RS (9,5,5) that is used for BD-RE and make it have error correction capability.To describe in detail below and make the address have the process of error correction capability.
When being placed on BD-ROM wherein, the Disc player that comprises optical pickup apparatus 11, VDP system 12 and D/A converter 13 as shown in Figure 9 can more accurate detection (write down frame #k+1, #k+2) physical address in and user data in first and second linking frames of BD-ROM.Especially, be used for anti-piracy and servo-controlled useful information if user data comprises, then Disc player is operated to use Useful Information.
In the linking frames structure shown in Fig. 4 d, shown in Figure 10 b physical address being write in each of three record frames of link area has two kinds of situations.The AUN of the physical cluster #k+1 of first situation after with the most close frame writes in three linking frames, and second situation writes on the AUN of the physical cluster #k before the most close frame in three linking frames.
The physical address that to be made up of 4 byte addresses, the reservation of 1 byte and 4 byte parities shown in Figure 11 a makes it have error correction capability by RS (9,5, the 5) coding that is used for BD-RE.To describe in detail below and make physical address have the process of error correction capability.
When being placed on BD-ROM wherein, as shown in Figure 9 comprise optical pickup apparatus 11, the Disc player of VDP system 12 and D/A converter 13 can more accurate detection (write down frame #k+1, #k+2, #k+3) physical address in and user data in three continuous linking frames of BD-ROM.Especially, be used for anti-piracy and servo-controlled useful information if user data comprises, then Disc player uses the operation of Useful Information.
Figure 10 c shows another exemplary embodiment of the present invention, and it writes the record frame with the address.(record frame #k+1 #k+2) comprises the 9 byte physical addresss that wherein comprise 4 byte actual addresses to each linking frames.4 byte actual addresses may have with write on linking frames before or after physical cluster in 16 values that AUN#0-#15 is identical.
Shown in Figure 10 c, the 4 byte actual addresses that write in first linking frames physical cluster before are made up of 27 bit addresses, 4 bit sequence numbers (0000-1111) and 1 bit fixed value " 0 ", wherein its order in physical address of serial number indication.All 27 bit addresses that write in the physical cluster of front have identical value.
Shown in Figure 10 c, another 4 byte actual addresses that write in second linking frames physical cluster afterwards are made up of 27 bit addresses, 4 bit sequence numbers (0000-1111) and 1 bit fixed value " 0 ", wherein its order in physical address of serial number indication.All 27 bit addresses that write the physical cluster back have identical value.
As mentioned above, 4 byte actual addresses of first linking frames comprise and write on the address that is arranged in the physical address before its.For example, shown in Figure 10 c, 4 byte actual addresses of first linking frames have the 16AUN (AUN#15) of the most close 27 bits and the address value of " 11110 ".In this situation, be one that writes in link area rather than the physical cluster in order to indicate physical address, last 1 bit " 0 " that is written in five bits " 11110 " in first linking frames can be replaced by " 1 ".
In addition, 4 byte actual addresses of second linking frames can comprise and write on the address that is arranged in the physical address after its.For example, shown in Figure 10 c, 4 byte actual addresses of second linking frames have an AUN (AUN#15) of the most close 27 bits and the address value of " 00000 ".In this situation, be one that writes in link area rather than the physical cluster in order to indicate physical address, last 1 bit " 0 " that writes in five bits " 00000 " in second linking frames can be replaced by " 1 ".
Last five bits that write on 4 byte actual addresses in first linking frames may be " 00000 ", and last five bits that write in second linking frames may be " 11110 ", although these values only are exemplary.
In addition, as below with reference to Figure 10 c explanation, the address that writes on any physical bunch that is arranged in the physical cluster before or after the link area can be write on first and second linking frames.
(3) encrypt
Figure 11 a is the block scheme that is used for the exemplary link frame structure circuit of the structure shown in Fig. 4 a.Linking frames structure circuit comprises encryption equipment 10 and totalizer 20.Encryption equipment 10 usefulness 9 byte physical addresss are encrypted 114 bytes of user data and are made that its DSV (digital sum value) is approaching zero, and add 9 byte physical addresss before the user data of encrypting.
Totalizer 20 has been added in from the interpolation of encryption equipment 10 address user data back with 32 byte parities, and 20 channel bit frame synchronization are added in the front of having added the address user data.Thereby, constructed the complete record frame that comprises 114 bytes of user data of encrypting with 9 byte physical addresss.
In the encryption of user data, can use the information except 9 byte physical addresss.
Figure 11 b is the block scheme that is used for another exemplary link frame structure circuit of the structure shown in Fig. 4 d.This linking frames structure circuit comprises encryption equipment 10 ' and totalizer 20 '.Encryption equipment 10 ' is 62 bytes of user data, encrypts with 9 byte physical addresss such as anti-piracy information to make its DSV (digital sum value) near zero, and added 9 byte physical addresss before the user data of encrypting.
Totalizer 20 ' has been added to 32 byte parities from the interpolation of encryption equipment 10 ' after the address user data.Therefore, the 103 complete byte records frames that comprise 62 bytes of user data of encrypting have been constructed with 9 byte physical addresss.
In the encryption of user data, can use the out of Memory except 9 byte physical addresss.
Except the linking frames that comprise frame synchronization, 9 byte physical addresss, 114 bytes of user data and 32 byte parities of structure shown in Fig. 4 a, can construct linking frames, shown in Fig. 4 b or 12a, make it have frame synchronization, comprise that 1 byte keeps and the 9 byte physical addresss and the 146 byte station addresss of 4 byte parities.This 146 bytes of user data may be encrypted, and 4 byte actual physical address may be used as encryption key.
In other words, shown in Figure 12 b, the part of 32 bits of 4 byte physical addresss (addend 0-addend 31) is as initially value of being written into of 16 bit shift registers 101 in encrypted circuit.With the initial value of being written into parallel be written into shift register 101 after, an encrypted byte is exported in each bit displacement.
Because User Data Length is 146 bytes in the embodiment of Fig. 9, per 146 displacements are with the parallel shift register 101 that is written into of the part of physical address.The change that make as link area the part address that will be written into.After parallel being written into, producing 146 bytes (S0-S145) of encrypting, and it is carried out XOR successively by XOR gate 102 and follow-up 146 bytes of user data (D0-D145).To write in the linking frames as the 146 follow-up bytes of encrypting in the past.
Except physical address, some repetitions of partial frame synchronous mode or bit " 10 " can come encrypt user data as encryption key.In addition, except writing on the physical address in the linking frames, can use an address in 16 addresses in being included in physical cluster, wherein this physical address is before or after current linking frames.Especially, can in 16 addresses, use an address of the most close current link frame.
The physical address that will write linking frames may be encrypted together with the user data of writing there.
In another exemplary embodiment of the present invention, can physical address not write in the linking frames shown in Fig. 4 c.In this situation, the physical address before or after linking frames can be used as encryption key, that is, and and to initially value of being written into of shift register.Because user data is 155 byte longs in this exemplary embodiment, then per 155 displacements are written into shift register with identical with different physical addresss as initial value.
As shown in figure 13, with the parallel 16 bit shift registers 101 ' that are written into encryption equipment of part 4 byte addresses (addend #0-#31), this encryption equipment also can be applicable to the BD-RE record, and moves past in the journey the output of 155 8 bit encryption bytes (S0-S154) order at the processing bit afterwards.
By XOR gate 102 ' continuous 155 encrypted bytes (S0-S154) and continuous 155 user octets (D0-D154) are carried out XOR together.As a result of, produce the user data (D ' 0-D ' 154) of 155 encryptions, and they are write in the record frame in the link area.
Except physical address, some repetitions of partial frame synchronous mode and bit " 10 " can come encrypt user data as encryption key.
(4) pseudo-data
Guarantee reproduction compatibility with BD-RE although in the link area of BD-ROM, form two record frames, but be not written under the situation of user data space being used for anti-piracy or servo-controlled useful data, shown in Figure 14 a, this user data space can be with any specific value, for example, " 00h " fills.A series of this filling value is called as pseudo-data.
If identical data are filled into whole user data space, then the manufacture process of BD-ROM can be simplified more.In addition, if having identical bit mode, adjacent track will occur crosstalking.Like this, as another exemplary embodiment of pseudo-data, shown in Figure 14 b, in order to reduce the probability of crosstalking, with some values, for example " 00h ", " 01h ", " 10h ", " 11h ", " FFh ", " AAh " etc. write user data space in turn.
In the exemplary embodiment of this pseudo-data recording, the pseudo-data of different value are recorded in the record frame of each linking frames that is distributed among the BD-ROM, and this has reduced the probability of the identical logging mode of between adjacent track formation.Therefore, reduced the probability of crosstalking significantly.
In two the record linking frames of frames, form in the situation about guaranteeing with the reproduction compatibility of BD-RE at BD-ROM, in another exemplary embodiment according to the present invention, user data space may be filled with some different values arbitrarily, for example " 00 ", " 01 ", " 11 ", shown in Figure 14 c, the appearance that they replace.
In the exemplary embodiment of the pseudo-data recording of Figure 14 c, link area has the identical data in their user data, and adjacent link area has different pseudo-data.
In this exemplary embodiment, the probability that forms identical logging mode between adjacent orbit is low-down, therefore, has reduced the probability of crosstalking.The manufacture process of the BD-ROM of this exemplary embodiment is also simpler.
In addition, if a value, for example " 00h " fills whole user data space after encrypting with the physical address that has changed each link area, also can reduce and crosstalk.
After encrypting, fill under the situation of user data space with " 00h ", if " 08h " is placed on each user data space foremost with unencrypted, can ignore any above-mentioned new frame synchronization of RMTR constraint condition use of appointment in the 17PP modulation as described above.
(5) ECC modular structure
If write in the user data space with important information useful, this information channel is encoded guarantees its reliability.RS (62,30,33) and RS (248,216,33) coded system are operable exemplary channel coded systems.Also specify coded system to write in the physical cluster of BD-ROM those as encoded user data.
Figure 15 a shows the record instance of record data in having as the link area of the described structure of Fig. 4 d.Shown in Figure 15 a,, at first 30 byte useful datas are encoded by RS (62,30, the 33) system of creating 32 byte parities in order to record the data of usefulness.
Hereto the operation, the input data by sequential storage in storer to constitute 30 * 309 data modules.When having constituted 30 * 309 data modules, each row of continuous sweep (151).Produce 32 byte parities by RS (62,30,33) coded system in the scanning of row each time, and it is appended to the there.As a result of, constitute 62 byte data series.
Each 62 byte comprise can be encrypted parity.In the situation of encrypting, as previously mentioned, the part physical address can be used as encryption key.
9 byte physical addresss are added in front in 62 bytes that form by said process.This 9 byte physical address may be made up of actual physical address and its parity.For example, 9 byte physical addresss may be made up of 4 byte actual addresses, the reservation of 1 byte and 4 byte parities.
The pseudo-data of 145 bytes are added in 71 bytes that comprise physical address, and, as a result of, add 32 byte parities afterwards by RS (248,216,33) coding.The 145 pseudo-data of removing interpolation produce the 103 byte data unit that will be written in link area.
Next 30 byte useful datas are repeated aforesaid operations produce 103 continuous byte data unit.After forming three unit, after three unit, add 4 dummy bits, and then altogether 2467 bits modulated by 17PP.After 17PP modulation, with 2467 bit expanded to 3714 channel bit.First frame synchronization of 30 channel bit is placed on the front of 3714 bits of modulation, and after the bit mode that repeats of bit mode, the 3 30 channel bit frame synchronization and other 20 channel bit that the 2 30 channel bit frame synchronization, 40 channel bit are repeated appends to the bit of modulation in proper order.3864 channel bit that form are like this write link area.
Under the situation of the aforesaid single link area of the very little not enough filling of useful data, add pseudo-data to useful data segment and form 30 bytes.For example, will write in the situation of 3 byte useful datas at each link area, a byte in three has to form single data cell.Therefore, shown in Figure 15 c, only filled one 309 byte row in 30 * 309 data modules, and other 29 provisional capital is filled with pseudo-data.This means at each row and add the pseudo-data of 29 bytes to 1 byte useful data.Afterwards, using RS (62,30,33) coded system is listed as to each of 30 bytes of having added pseudo-data 32 byte parities is appended to there.
In order to recover to write useful data in the link area, carry out decode procedure, the reverse order of promptly above-mentioned ablation process as in the past.
Form in the situation of single link area at two shown in Fig. 4 b identical frames, shown in Fig. 4 a, the user data space of linking frames may be filled with 114 byte useful datas and 32 byte parities.In the record instance of Fig. 4 a, use and Fig. 4 b or the described diverse ways of 4c guarantee data reliability in chnnel coding.To diverse ways be described with reference to Figure 16.
At first collect the nearly useful data (S1) of 2048 bytes.4 byte EDC (error-detecging code) are appended to the useful data module of forming by 2048 bytes of collecting (S2).2052 bytes that comprise EDC are divided into 18 114 byte data unit (S3).Encrypt first data cell (S4), and add 9 byte physical addresss (S5) in its front.Add the pseudo-data of 93 bytes to comprise physical address 123 byte data unit, and, whereby 32 byte parities are appended to data cell by RS (248,216,33) system coding.93 bytes of removing interpolation produce 155 byte frame data (S6), and afterwards with its 17PP modulation.At last, add the complete linking frames (S7) that 30 above-mentioned channel bit frame synchronization form 1932 channel bit in the front of frame data.
The processing (S4-S7) of order described above is applied to next 114 byte datas of dividing forms another linking frames.Two linking frames that form are like this write link area, as a result of, form the structure shown in Fig. 4 a.
When encrypting each 114 byte data unit with above-mentioned processing, as previously described in encryption, use physical address.Write on first and second linking frames that the identical or different physical address that is arranged in the RUB before or after the link area is used for link area.Under the situation of using different addresses, this first linking frames is used and is write on linking frames address before, and the use of second linking frames writes on linking frames other addresses afterwards.
As previously mentioned, the physical address that be written in each linking frames may be made up of 4 byte actual addresses, the reservation of 1 byte and 4 byte parities.In this situation, 4 byte parities are produced 5 bytes by using RS (9,5,5) channel coded system.
In addition, 4 byte actual addresses are made up of 27 bit addresses and 5 bit addresses identifiers, and this address designator is used for distinguishing the independent physical address in link area.
A pair of " 00000/11110 " or " 00001/11111 " may be used as address designator.In person's (or latter) the situation, " 00000 " (or " 00001 ") is inserted in the physical address in the linking frames before use, simultaneously another linking frames is inserted in " 11110 " (or " 11111 ").
In the above description, described new frame synchronization " FS n ", they are different with synchronous " FS0-FS6 " of Frame in writing on physical cluster, and can be used for linking frames.Use and the situation of the synchronous different new frame synchronization of Frame under, in order to protect the digital content that is recorded on the BD-ROM, will be written in the frame synchronization that the data in the physical cluster are used in the linking frames and encrypt not by illegal copies.
Though the content with this ciphered data that will be recorded on the BD-ROM copies CD-RW to, for example, on the BD-RE, " FS n " can not copy on the BD-RE in the new frame synchronization on the linking frames, and it is not created in the BD-RE recording process yet.In other words, being used for encrypted secret key is unavailable in the process of the content that is reproduced in the copy on the BD-RE, makes that it cannot be decrypted.Therefore, can protect the content on BD-ROM not to be subjected to illegal copies.
Above-mentioned structure according to the link area of high-density read-only recording medium of the present invention guaranteed when being reproduced by Disc player or disc drives, the reproduction compatibility of itself and re-writable recording medium (such as BD-RE).In addition, the structure of this link area make it can be used for Disc player or disc drives come by from rewritable recording medium very fast tell read-only recording medium, if necessary, and carry out suitable operation.In addition, by above-mentioned recording mode, Useful Information can be stored in the link area reliably.
Though described exemplary embodiment of the present invention in conjunction with high density, read-only recording medium, it should be understood by one skilled in the art that, instruction of the present invention also can be applicable to other recording medium, such as recordable, rewritable or once rewritable medium and relative method and apparatus.
Although disclose some specific embodiment of the present invention, should notice that the present invention also may be embodied as other form under the situation that does not break away from its spirit and essential characteristic.Therefore, should think that the present invention is exemplary aspect all and is not restrictive, by the scope of the present invention of additional claim indication, and all variations in claim and equivalent scope and implication all are intended to be contained in wherein.