CN1691177B - Modulator, modulation method and method of manufacturing an optical recordable medium - Google Patents
Modulator, modulation method and method of manufacturing an optical recordable medium Download PDFInfo
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- CN1691177B CN1691177B CN 200510052441 CN200510052441A CN1691177B CN 1691177 B CN1691177 B CN 1691177B CN 200510052441 CN200510052441 CN 200510052441 CN 200510052441 A CN200510052441 A CN 200510052441A CN 1691177 B CN1691177 B CN 1691177B
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Abstract
A modulator includes a replacement processing unit which replaces a part of main information code-converted in a main information converter with specific information code-converted in a specific information converter and a direct-current component suppress processing unit which performs direct-current component suppress processing for the main information which has undergone the replacement processing in the replacement processing unit. The direct-current component suppress processing can be performed for the main information after the replacement processing of the main information with the specific information to prevent deterioration in direct-current component suppress characteristics due to the replacement processing.
Description
Technical field
The present invention relates to replace the modulating device of the part of main information with customizing messages.
Background technology
Have and on the recording medium of CD (Compact Disk), DVD (Digital Versatile Disk) etc., write down the situation about hiding Info that is not disclosed as purpose to the user.For example, when various content records such as crypto image, sound, article under the situation on the recording medium and encrypted content together, its key of decoding as the record that hides Info.By realizing content regeneration and two aspects that prevent illegal copies like this, seek to be included in the protection of the works in the content.
In addition, disclose with the modulators modulate encrypting key different and be recorded in technology (opening 2003-109302) on the recording medium with reference to the spy with the modulator of information data block.In addition, disclose the 2nd information that comprises the 1st information K1 of the composition that is used for decoded content with transformation rule φ 1, φ 2 conversion respectively and comprise the composition that is used to the 1st information of deciphering and be recorded in technology (opening 2003-122637) on the recording medium with reference to the spy.
Consider to modulate main information with the 1st, the 2nd modulation system respectively and hide Info to generate the main information modulated signal and the modulation signal that hides Info, use the modulation signal that hides Info to replace the part of main information modulated signal, it is recorded on the recording medium.That is, imbed signal record to what in main information modulated signal, imbed the modulation signal that hides Info in recording medium.
In the method, by imbed the signal main information of can regenerating with the 1st modulation system demodulation.Though the part of main information modulated signal is replaced into the modulation signal that hides Info,, can reproduces main information with the front of the displacement that hides Info by implementing correction process to imbedding signal.And, because only otherwise using the 2nd modulation system just to be difficult to regeneration hides Info, so can keep the secrecy that hides Info.
But,, then might in main information, produce wrong transmission if this method for example is useful among the DVD.Though in main information, be replaced into the mistake that the position that hides Info becomes main information, also may in main information, making a mistake on the position in addition.This erroneous transmissions can cause because of the modulation treatment on main information and the fillet that hides Info.In addition, to main information hide Info imbed might be in flip-flop that main information is applied suppresses to handle confusion reigned, become the reason of flip-flop rejection characteristic deterioration.
By to imbedding the customizing messages that hides Info etc. in the main information, the characteristics of signals of main information might deterioration as mentioned above.
In view of the above problems, in embodiments of the present invention, be provided at the modulating device of imbedding the characteristics of signals deterioration of seeking to reduce main information when customizing messages such as hiding Info in the main information.
Summary of the invention
In one embodiment of the present invention, provide the modulating device that possesses with lower unit: the main information conversion unit that main information is carried out code conversion with the 1st modulation system; With 2nd modulation system different with the 1st modulation system based on the customizing messages converter unit that customizing messages is carried out code conversion through the main information of code conversion; Part through the main information of above-mentioned code conversion is replaced into through the customizing messages of the above-mentioned code conversion replacement Treatment unit with the output channel bit stream, is scattered in a plurality of physical sectors of above-mentioned channel bit stream through the customizing messages of above-mentioned code conversion; The flip-flop that suppresses the flip-flop of above-mentioned channel bit stream suppresses the unit.
In another embodiment of the present invention, provide a kind of modulating device that has with the lower part: according to status information, with the main information conversion unit of the 1st modulation system code conversion master information; Customizing messages converter unit with the 2nd modulation system code conversion customizing messages different with the 1st modulation system; Part through the main information of above-mentioned code conversion is replaced into customizing messages through above-mentioned code conversion, the replacement Treatment unit of its object information as channel bit stream output; Calculate the DSV control module of the DSV value of above-mentioned channel bit stream; The DSV value that goes out with above-mentioned displacement result, aforementioned calculation is the status register of output state information accordingly.
In another embodiment of the present invention, provide a kind of modulating device that possesses with the lower part: with the main information conversion unit of the 1st modulation system code conversion master information; Customizing messages converter unit with the 2nd modulation system code conversion customizing messages different with the 1st modulation system; Part through the main information of above-mentioned code conversion is replaced into customizing messages through above-mentioned code conversion, the replacement Treatment unit of its object information as channel bit stream output; Calculate the DSV value of above-mentioned channel bit stream, suppress the DSV control module of the flip-flop of above-mentioned main information of being replaced.
In another embodiment of the present invention, provide a kind of modulating device that possesses following function: according to the main information conversion unit of status information with the 1st modulation system code conversion master information; According to the customizing messages converter unit of status information with the 2nd modulation system code conversion customizing messages different with the 1st modulation system; Part through the main information of above-mentioned code conversion is replaced into customizing messages after above-mentioned code conversion, the replacement Treatment unit of its object information as channel bit stream output; According to the displacement result who adopts above-mentioned replacement Treatment unit, export from least a information converting output unit of the information converting of through main information after the above-mentioned code conversion or the customizing messages after above-mentioned code conversion, selecting; Calculate the DSV control module of the DSV value of this channel bit stream; According to the output of above-mentioned information converting output unit and from the output of above-mentioned DSV control module, the status register of output state information.
In another embodiment of the present invention, a kind of modulating device that has with the lower part is provided: storage is the main information data before the code conversion, NextState information, based on be mapped the 1st main information conversion table of expression and the main information data before the code conversion, NextState information, based on the be mapped main information memory cell of the 2nd main information conversion table of expression of the 2nd code after the code conversion of status information of the 1st code after the code conversion of status information; According to the above-mentioned the 1st, the 2nd main information conversion table, code conversion master information is exported above-mentioned by the main message code converter unit of code conversion for the main information of the channel bit of each specified length separately to the 1st terminal, the 2nd terminal; Calculating outputs to the 1DSV computing unit through the 1DSV value of the main information of code conversion of above-mentioned the 1st terminal; Calculating outputs to the 2DSV computing unit through the 2DSV value of the main information of code conversion of above-mentioned the 2nd terminal; According to above-mentioned the 1st, 2DSV value, determine the status information determining unit of the status information in above-mentioned main information conversion table, used; Imbed customizing messages, judge that 1 number in the main information region of code conversion is the odd even identifying unit of odd number or even number; According to the result of determination in above-mentioned odd even identifying unit, with the customizing messages converter unit of the 2nd modulation system code conversion customizing messages different with the 1st modulation system; Part through the main information of above-mentioned code conversion is replaced into customizing messages through above-mentioned code conversion, the replacement Treatment unit of its result as channel bit stream output.
In another embodiment of the present invention, provide a kind of modulating device that possesses with the lower part: with the main information conversion unit of the 1st modulation system code conversion master information; Handle the connection rule list that the adjacent channel bit in front and back makes up according to expression, from through the main information of above-mentioned code conversion, generating the connection rule treatments unit of main information modulated signal; With the 2nd modulation system code conversion customizing messages different, generate the customizing messages converter unit that is included in the customizing messages figure signal of untapped pattern in above-mentioned the 1st modulation system with the 1st modulation system; The replacement Treatment unit of the part of the main information modulated signal of above-mentioned generation with the customizing messages figure signal displacement of above-mentioned generation.
The customizing messages modulation signal of above-mentioned generation (for example is divided into a plurality of parts, title division and latter end, the perhaps part more than 3), also can comprise the pattern that the more than one part among above-mentioned a plurality of part is not used in above-mentioned the 1st modulation system.
The customizing messages modulation signal of above-mentioned generation (for example is divided into a plurality of parts, title division and latter end, the perhaps part more than 3), also can comprise the combination that the connection more than 2 in above-mentioned a plurality of part is not used in above-mentioned connection rule treatments unit.
Above-mentioned connection processing unit generating run length is limited in the main information modulated signal in the specialized range, and untapped pattern also can be the pattern that surpasses the running length of afore mentioned rules scope in above-mentioned the 1st modulation system.
In another embodiment of the present invention, provide the modulator approach that possesses following steps: according to the main information data before the conversion, NextState information, based on the 1st code after the code conversion of status information be mapped the expression the 1st main information conversion table, with the main information data before the conversion, NextState information, based on the 2nd code after the code conversion of status information be mapped the expression the 2nd main information conversion table, code conversion master information is to the 1st terminal, the 2nd terminal is exported above-mentioned by the step of code conversion for the main information of the channel bit of each specified length separately; Calculating is output on above-mentioned the 1st terminal 1DSV value through the main information of code conversion; Calculating outputs to the step through the 2DSV value of the main information of code conversion of above-mentioned the 2nd terminal; According to above-mentioned the 1st, 2DSV value, determine the step of the status information in above-mentioned main information conversion table, used; Judge that 1 number in the main information region of code conversion of imbedding customizing messages is the odd number or the step of even number; According to above-mentioned result of determination, with the step of the 2nd modulation system code conversion customizing messages different with the 1st modulation system; Part through the main information of above-mentioned code conversion is replaced into customizing messages through above-mentioned code conversion, the step of its object information as channel bit stream output.
In another embodiment of the present invention, provide a kind of modulator approach: the step of main information being carried out code conversion with the 1st modulation system with following steps; With 2nd modulation system different with above-mentioned the 1st modulation system based on the step of customizing messages being carried out code conversion through the main information of above-mentioned code conversion; Part through the main information of above-mentioned code conversion is replaced into through the customizing messages of the above-mentioned code conversion step with the output channel bit stream, is scattered in a plurality of physical sectors of above-mentioned channel bit stream through the customizing messages of above-mentioned code conversion; The step that suppresses the flip-flop of above-mentioned channel bit stream.
In another embodiment of the present invention, the manufacture method that possesses the following steps optical record medium is provided, possess: the step that generates encrypted key data; Generation comprises the step of the main information of all data; Generate the step that hide Info different with above-mentioned all information; The step of above-mentioned main information being carried out code conversion with the 1st modulation system; Carry out the step of code conversion with the 2nd modulation system different to hiding Info based on main information through above-mentioned code conversion with above-mentioned the 1st modulation system; With through the displacement of the customizing messages of above-mentioned code conversion through the part of the main information of above-mentioned code conversion step with the output channel bit stream, be scattered in a plurality of physical sectors of above-mentioned channel bit stream through the customizing messages of above-mentioned code conversion; The step that suppresses the flip-flop of above-mentioned channel bit stream; Through the key data of above-mentioned encryption, be embedded to step on the optical record medium through the channel bit stream of above-mentioned inhibition.
In another embodiment of the present invention, provide the manufacture method of the stamper that possesses following steps: the step that generates encrypted content-data; Be created on the step that is encrypted in the encrypted key data of using in the decoding of content-data through above-mentioned; Generation comprises the step of the main information of all data; Generate the step of the customizing messages different with above-mentioned all data; With the 1st modulation system code conversion is above-mentioned main information, the step of the main information that is made of channel bit; According to the connection rule list of the combination of representing the channel bit that the processing front and back are adjacent, from through the main information of above-mentioned code conversion, generating the step of main information modulated signal; With the 2nd modulation system code conversion customizing messages different, generate the step that is included in the customizing messages modulation signal of untapped pattern in above-mentioned the 1st modulation system with the 1st modulation system; Replace the part of the main information modulated signal of above-mentioned generation with the customizing messages modulation signal of above-mentioned generation, generate the step of encrypted output data; The step of imbedding the stamper of recording medium through above-mentioned content data encrypted, through the key data of above-mentioned encryption, through the output data of above-mentioned encryption.
In another embodiment of the present invention, provide the manufacture method of the stamper that possesses following steps: the step that generates encrypted key data; Generation comprises the step of the main information of all data; Generate the step of the customizing messages different with above-mentioned all data; With the 1st modulation system code conversion is above-mentioned main information, the step of the main information that is made of channel bit; Handle the connection rule list that the adjacent channel bit in front and back makes up according to expression, from through the main information of above-mentioned code conversion, generating the step of main information modulated signal; With the 2nd modulation system code conversion customizing messages different, generate the step that is included in the customizing messages modulation signal of untapped pattern in above-mentioned the 1st modulation system with above-mentioned the 1st modulation system; Replace the part of the main information modulated signal of above-mentioned generation with the customizing messages modulation signal of above-mentioned generation, generate the step of encrypted output data; The step of imbedding the stamper of recording medium through the key data of above-mentioned encryption, through the output data of above-mentioned encryption.
In another embodiment of the present invention, provide a kind of modulating device that possesses with the lower part: with the main information conversion unit of the 1st modulation system code conversion master information; Customizing messages converter unit with the 2nd modulation system code conversion customizing messages different with the 1st modulation system; Inhibition suppresses processing unit through the flip-flop of the flip-flop of the main information of above-mentioned code conversion; Part through the main information of above-mentioned inhibition is replaced into replacement Treatment unit through the customizing messages of above-mentioned code conversion.
In another embodiment of the present invention, provide a kind of modulating device that possesses with the lower part: with the main information conversion unit of the 1st modulation system conversion master information; Handle the connection rule list that the adjacent channel bit in front and back makes up according to expression, from through the main information of above-mentioned code conversion, generating the connection rule treatments unit of main information modulated signal; With the 2nd modulation system code conversion customizing messages different, generate the customizing messages converter unit that is included in the customizing messages modulation signal of untapped pattern in above-mentioned the 1st modulation system with above-mentioned the 1st modulation system; Inhibition suppresses processing unit through the flip-flop of the flip-flop of the main information of above-mentioned code conversion; Part through the main information modulated signal of above-mentioned inhibition is replaced into replacement Treatment unit through the customizing messages modulation signal of above-mentioned generation.
Description of drawings
Fig. 1 is the figure that shows the disc recording apparatus of embodiment of the present invention 1.
Fig. 2 is a block scheme of showing the inner details that constitutes of modulating unit shown in Figure 1.
Fig. 3 A is the figure of an example of the code change table that uses in the conversion that is illustrated in the code table unit.
Fig. 3 B is illustrated in the figure that code connects an example of the connection map table that uses in the processing of processing unit.
Fig. 4 A is other the figure of example of the code conversion table that uses in the conversion that is illustrated in the code change unit.
Fig. 4 B is illustrated in other the figure of example that code connects the connection map table that uses in the processing of processing unit.
Fig. 5 is the mode chart of the formation example of explanation medium mark modulation signal.
Fig. 6 shows the process flow diagram of main information modulated signal being imbedded the order of medium mark modulation signal.
Fig. 7 is the figure that shows the comparative example of the inner detailed and Fig. 2 correspondence that constitutes of modulating unit shown in Figure 1.
Fig. 8 is a modulator shown in Figure 7, is the time diagram of showing an example of the tracer signal polarity when having modulated main information.
Fig. 9 A～9D is a mode chart of showing the data rows of passing when modulating with modulator shown in Figure 2.
Figure 10 A～10C is a mode chart of showing the data rows of passing when connecting rule treatments, is the figure of the comparative example of exploded view 9A～9D.
Figure 11 A～11D is the mode chart that is illustrated in the data rows of passing when connecting rule treatments, is the figure of the comparative example of exploded view 9A～9D.
Figure 12 is the mode chart that is illustrated in the Frame structure that generates in the data frame generating unit.
Figure 13 is the mode chart of showing from the ECC piece of PO/PI generation unit output.
Figure 14 shows that error correction symbol external PO from PO interleaved units R06 output is by the mode chart of the ECC piece of decentralized configuration.
Figure 15 is what to show from the output of medium token-replacement unit, has made up the mode chart of physical sector of the state of medium marking signal.
Figure 16 A～16E is the mode chart that is illustrated in the data rows of passing in the modulation treatment of variation 1 of the present invention.
Figure 17 A～17C is the mode chart that is illustrated in the data rows of passing in the modulation treatment of variation 2 of the present invention.
Figure 18 A～18D is the mode chart that is illustrated in the data rows of passing in the modulation treatment of variation 3 of the present invention.
Figure 19 shows that demodulation imbeds the block scheme that the demodulating equipment of the main information modulated signal of medium mark modulation signal constitutes example.
Figure 20 is the figure that is illustrated in an example of the order of encrypted content in the regeneration special-purpose cd.
Figure 21 is the figure that is illustrated in an example of the order of decoded content in the regeneration special-purpose cd.
Figure 22 is the figure of an example of the processing sequence when being illustrated in record regenerating and making with CD.
Figure 23 is illustrated in the figure of record regenerating with an example of the order of encrypted content in the CD.
Figure 24 is illustrated in the figure of record regenerating with an example of the order of decoded content in the CD.
Figure 25 is the block scheme of the details of showing that the inside of the modulation treatment unit of embodiment 2 constitutes.
Figure 26 is the block scheme of the details of showing that the inside of the modulation treatment unit of embodiment 3 constitutes.
Figure 27 is the block scheme of the details of showing that the inside of the modulation treatment unit of embodiment 4 constitutes.
Figure 28 is the block scheme of the details of showing that the inside of the modulation treatment unit of embodiment 5 constitutes.
Embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.
(embodiment 1)
Fig. 1 is the figure that shows the disc recording apparatus of embodiment of the present invention 1.
At this, on the main information of content-data (Contents Data), media key block (MKB:MediaKey Block) and all data (RP-Data) etc., imbed the medium mark (MM) as hide Info (customizing messages a kind of), D writes to recording medium.
Content-data is the data of expression reflection, sound etc.Because the encrypted back of this content-data writing recording medium D, so generally be in Fig. 1, before input, to become encrypted encrypted content (Enc-contents).So the content and the encrypted content of (flat literary composition) in this figure because before not needing difference to encrypt are only as content-data.
Media key block (MKB), all data (RP-Data), and medium mark (MM) all is the information that is used to protect content-data.
Media key block (MKB), medium mark (MM) are key elements of the encrypting key of decoding encrypted content.
All data (RP-Data) are as literary property, trade mark right, and the data of knowing proprietorial objects such as title.If all data are the data with works such as data of reflection, sound, then become the object of literary property.In addition, under the situation of all data performance trade mark functions, can become the object of trade mark right.As the situation of performance trade mark function, can be set forth in a CD 10 and be placed on dish when driving (regenerating unit) and going up, the situation of regeneration pictorial trademark.When showing in store, as its result, all data allow client see as trade mark.
At this, as main information, as hiding Info, but this division is not absolute in some sense, can be arranged to different therewith divisions yet medium mark (MM) media key block (MKB), all data.And the information together handled of content-data as main information, the information in this main information of being embedded in as hiding Info (customizing messages a kind of).
Main information is imported into data frame generating unit R01, puts Frame (Data frame) structure into the packet of adopting the 2K byte in order.Meanwhile, go up additional ID error-detecting symbol (IED) in the sector identifier corresponding (ID:Sector-TD) with each Frame.The Frame that generates in data frame generating unit R01 is input to EDC generation unit R02, additional sectors identifier (ID) and preliminary date (RSB), and then generate and additional error detected symbol (EDC:Error Detection Code) (with reference to Figure 12 described later).
Frame from EDC generation unit R02 output is input to scramble unit R 03, overlapping scrambling signal on the main information in Frame.The signal that this scrambling signal is normally determined based on a part of data of sector identifier (ID).The Frame of handling through scramble is imported into ECC piece generation unit R031, generates the ECC piece from 16 groups of Frames.The ECC piece is input to PO/PI generation unit R051, generates additional error correction symbol external PO and internal symbol PI (with reference to Figure 13 described later).
Be imported into PO interleaved units R06 from the ECC piece of PO/PI generation unit R051 output, the error correction symbol external PO in the decentralized configuration ECC piece (with reference to Figure 14 described later).Its result, the ECC piece becomes decentralized configuration error correction symbol external PO, and the structure of the record sets of sectors of additional error correction internal symbol PI.These record sectors are modulated processing among additional and the 1st modulating unit R07 in synchronizing signal (Sync), the appended synchronization signal.
On the other hand, medium mark (MM) is the special-purpose error correction symbol of additional agents mark (MM) (MM-Pa) in medium mark odd even (MM-Pa) generation unit R11, becomes error correction additional agents mark (MM+MM-Pa), and is modulated in the 2nd modulating unit R13.
Modulated record sector and modulated medium mark are imported into medium mark (MM) permute unit R14, generate tracer signal (with reference to Figure 15 described later) after the part of the main information modulated signal of record in the sector is replaced into medium mark modulation signal.This tracer signal is by recording medium writing unit R08 writing recording medium D.
Additional and the 1st modulating unit R07, the 2nd modulating unit R13 with these synchronizing signals (Sync), and medium mark (MM) permute unit R14 carry out the modulation of main information, imbedding of hiding Info, these cell population as modulation treatment unit R 071.
Fig. 2 is the block scheme of the details of showing that the inside of modulation treatment unit R 071 shown in Figure 1 constitutes.But the part additional relevant with synchronizing signal (Sync) omitted.The code table of this figure (Code table) unit 11, status register (State Register) 12, and code connection (Code Connector) processing unit 13 is corresponding with the 1st modulating unit R07 of Fig. 1, the medium mark modulation unit (MM Modulation) 14 of this figure is corresponding with the 2nd modulating unit R13, and the change-over switch S of this figure and DSV control module (DSVController) 15 are corresponding with medium mark (MM) permute unit R14.Replace them, can consider when change-over switch S and medium token-replacement unit R 14 are corresponding, DSV control module 15 is attached to element on the modulator R071.In addition, can consider that also code table unit 11 and code connect processing unit 13 with when the 1st modulating unit R07 is corresponding, status register 12 is attached to element on the 1st modulating unit R07.
Main information is imported into code table unit 11 as data word (Data word) B (t) and is transform code (coded word: X (t) Code Word) by code conversion.Code table unit 11 be stored in storer or for code conversion by in the memory storage of high speed.In code table unit 11,1 data word is prepared a plurality of states (State), based on carrying out code conversion by the selected state of selection signal from status register.In this figure, in code table unit 11, with data word B (t) selection mode S (t) accordingly, the designation data of output NextState (Next State) S (t+1).
The indicator signal of NextState (Next State) S (t+1) is used in the state of next transform code (Data word) B (t+1) is selected with status register (StateRegister) 12 storages.
The transform code X (t) of 11 outputs then is sent to code connection (Code Connector) processing unit 13 from the code table unit, adopts figure shift to connect rule and handles, and is transformed to connect coded word (Connector Code Word).Code connects processing unit 13 when having produced under the situation of AD HOC in intersymbol joining part, be transformed to another pattern.Its result by connecting the transform code of each data word (symbol), can prevent in violation of rules and regulations.
As medium mark converter unit (MM Modulation) the 14 code conversion medium marks (MM) that hide Info with modulator, generate medium marker code word (MM Code Word).This conversion is based on the transformation rule different with main information.
Change-over switch S can replace the part of main information with hiding Info by switching the signal that is input to DSV control module (DSV Controller) 15 with connecting coded word (main information) and medium mark transform code (hiding Info).That is, carry out to main information hide Info imbed.
DSV control module (DSV Controller) 15 is handled the position information of the part of the signal imported by counter-rotating, controls the flip-flop that becomes in the NRZI of the tracer signal signal is passed near " 0 ".Because the flip-flop of signal is represented with (DSV:DigitalSum Value) with signal, counter-rotating connects the position of the part of coded word, the inhibition control (DCC:DC component suppress control) of carrying out flip-flop make at the appointed time signal with (DSV) near 0.
At this,, be that the signal (imbedding the signal that hides Info) that has made up medium marking signal (MM) is carried out so flip-flop suppresses control because before DSV control module (DSV Controller) 15, dispose change-over switch S.Its result by imbedding of hiding Info, can prevent that flip-flop from suppressing the confusion of control.And, its details of aftermentioned.
In addition, connect (Code Connector) processing unit 13 from medium mark modulation unit (MM Modulation) 14 to code and transmit control signal, in the zone of combining medium marking signal (MM), stop to connect rule treatments.Its result hides Info by imbedding after connecting rule treatments, can prevent and imbed (displacement) position mistake in addition.And, its details of aftermentioned.
Fig. 3 A is the figure of an example of the code conversion table that uses in the conversion that is illustrated in code table (Code table) unit 11.In this figure, show the part of code conversion table be used for each data word of 8 (symbol data) is transformed to the coded word of 12 channel bit.Each data word (Data word) is transformed to 3 kinds of coded words according to state (State) 0～2.Corresponding definite NextState with the data word of conversion (Next-State).
At this, " * " determines with the relation of RLL code (Run Length Limited Code).The RLL code is restriction 0 continuous minimum value and a peaked modulation code, for example, (2,7) RLL represent to allow from minimum 2 times to maximum 7 times 0 continuous meanings.
" # " expression determines one of 0,1 with DSV control module (DSV Controller) 15, makes near the meaning of DSV 0.
Fig. 3 B is illustrated in the figure that code connects an example of the connection map table that uses in the processing in (Code Connector) processing unit 13.
In an example that connects rule treatments, (Previous Code Word Current Code Word) is meant under the situation of cover half formula when 2 continuous coded words of front and back in addition, is transformed to connect coded word (Concatenated Code Word).At this, "? " be illustrated in and connect the meaning that the rule treatments front and back keep initial value.
Fig. 4 A, 4B are illustrated in the code conversion table that uses in the conversion in the code table unit 11 respectively and the figure of other example of the connection map table that uses in code connects processing in the processing unit 13.At this, show basically with data word and determine coded word after the conversion that transform code does not have the situation of state dependence.After in code table unit 11, using (1,7) RLL code to carry out modulation, in code connection processing unit 13, connect rule treatments.
It is the part of code conversion table of the coded word of 12 channel bit that Fig. 4 A represents to be used for each data word of 2 (symbol data) code conversion.Basically 2 data word (Source data) is transformed to 3 coded word.But, be under the situation of " 00 " when data word, adding the coded word that 24 bit data word up and down are transformed to 6 passages.The reverse signal of its position is followed in " X " expression in this figure.That is, " X " is if its next bit is " 0 " then become " 1 ".If its next bit is " 1 " then become " 0 ".
Fig. 4 B is the figure of other example of employed connection map table in the processing that is illustrated in the code connection processing unit 13.
If rank " 100110 ", then become " 010 101 010 ", for repeat " 01 " with the code conversion table code conversion that Fig. 4 A represents.This signal is the shortest running length in (1,7) RLL, if its writing recording medium then read difficulty that becomes intactly.Therefore, connect rule treatments, prevent the repetition of " 01 ", from the recording medium that records this signal, read easily with the connection map table shown in Fig. 4 B.
Fig. 5 is the mode chart of the formation example of explanation medium mark modulation (MM Modulation) signal.
If consider the RLL rule, then operable pattern is restricted in the coded word after conversion (channel bit).Therefore, under the situation of data word (symbol data) conversion position coded word (channel bit), might use most bit pattern.That is, utilize the major part of the pattern conversion of main information, the code conversion that the remainder of the pattern conversion of main information is used for medium mark (hiding Info) becomes difficult.In order to keep the hiding property of medium marking signal, under the situation of the medium mark modulation signal of modulating it with the mapping mode inverse transformation (main information demodulation) the same with main information, first medium marking signal of need not regenerating.
At this, longer by the channel bit length of medium marking signal is arranged to than the channel bit of main information, make the modulating mode of the modulating mode of medium marking signal and main information different easily.That is,, on the part of this channel bit, be combined in the pattern that does not have to use in the channel bit pattern of main information, can on other parts, keep the code conversion function by the channel bit length of lengthening medium marking signal.For example, the channel bit length of medium marking signal is set to 2 times of main information channel bit length, makes the code conversion table that the medium marking signal is used.
In Fig. 5, medium mark modulation signal is split into channel bit [A] [B] [C].Channel bit [A] constitutes the title division (Header Part) of medium mark modulation signal, the latter end (End Part) that channel bit [B] [C] constitutes the medium modulation signal.
On this title division (Header Part), be combined in untapped bit pattern in the conversion channel bit pattern of main information.In addition, in latter end (End Part) combined transformation the bit pattern of medium marking signal.Like this, even use mapping mode inverse transformation medium mark modulation (MM Modulation) signal in the main information, first medium marking signal of also can not regenerating can keep the hiding property of medium mark modulation signal.In the bit pattern of latter end at this moment, can use with the medium marking signal of the same transformation rule institute conversion of main information.
And then, also can be arranged to channel bit [B] [C] separately center section (Middle Part), the latter end (End Part) of medium mark modulation signal.In this case, combination by title division (Header Part) and latter end (End Part), can be formed in untapped bit pattern in the conversion channel bit pattern of main information, at center section (Middle Part) combined transformation the bit pattern of medium mark.
Fig. 6 shows the process flow diagram of main information modulated signal being imbedded the order of medium mark modulation signal.
In main information modulated signal, be limited in the connection rule treatments (step S11) in the adjacent main information modulated signal in position imbedded with medium mark modulation signal.As mentioned above, be limited among Fig. 2, carry out by connecting processing unit 13 input control informations to code from medium modulating unit 14 at this.In addition, also can change this code and connect the restriction of handling, the code that inverse transformation has been carried out connects processing and returns former state.In addition, the example that carries out this inverse transformation is narrated afterwards.
Is medium mark modulation division of signal title division (Header Part) and latter end (End Part) (step S12).
The title division of modulation treatment medium mark modulation signal and latter end (step S13, S14).
And then, carry out imbed (the step S15) of medium mark modulation signal.Carry out the switching of change-over switch S by the moment at the title division of medium modulation signal, the part with the title division and the latter end of medium mark modulation signal are replaced main information modulated signal is input to DSV control module 15 to the signal after the displacement., by make change-over switch S turn back to main information modulated signal one side, main information modulated signal is input to DSV control module 15 thereafter.
Like this, the main information modulated signal of imbedding the medium modulation signal is input to the DSV control module, carries out flip-flop and suppress to handle (step S16).
At this moment, can carry out the modulation of medium marking signal as described below.Determine the bit pattern of the title division of medium mark modulation signal with medium marking signal A before the modulation and the main information modulated signal before this modulation.In addition, with remaining medium marking signal B, C, the title division of medium mark modulation signal before this and the bit pattern that after this back to back main information modulated signal is determined the latter end of medium mark modulation signal.
This code that is illustrated on the zone of imbedding the medium marking signal connects processing.Connect in the processing at this code, the bit pattern before can establishing main information modulated signal and imbedding does not change.Exchange mutually therewith also can while conversion medium mark modulation signal and adjacent with it main information modulated signal.Like this, become easier with the corresponding of RLL rule etc.In addition, its details is narrated afterwards.
(comparative example)
Fig. 7 represents the modulation treatment unit R shown in Figure 1 071 inner details that constitutes, and is the figure of the comparative example of expression and Fig. 2 correspondence.Main information modulated signal in code table unit 11, code connects processing unit 13x, and modulates in the DSV control module 15 and flip-flop suppresses to handle, and generates main information modulated signal.By switch this main information modulated signal and the medium mark modulation signal line output of going forward side by side with change-over switch S, generate the main information modulated signal of imbedding medium mark modulation signal.And then hypothesis was used the code conversion table of Fig. 3 A, 3B and was connect map table this moment.
In this mode, after connecting rule treatments,, be not this replacing section, and mistake (generation of error propagation) also might appear in the main information adjacent with replacing section by the part of main information modulated signal being replaced into medium mark modulation signal.In addition, might reduce the flip-flop rejection characteristic of the signal of being modulated.
Fig. 8 is a modulator shown in Figure 7, is the time diagram of an example of the tracer signal polarity of expression when having modulated main information.Order input and modulation are as the data rows " 22 " of coded word (Source Data), " 7B ", " 5C ".The modulation signal of this moment is used in the coded word (channel bit) of conversion in the modulator, before this code and the 2 value waveforms thereof through NRZI (NonReturn to Zero Inversion) conversion that are recorded on the recording medium are represented.The NRZI transform code is the tracer signal in the marker edge recording mode in the CD of CD and DVD etc., and the purpose that flip-flop suppresses control is the code control of using after this NRZI conversion, and it is zero making the accumulative total of amount of " 1 " and " 0 " poor.
At this, the part of tentation data row " 7B ", " AE " medium mark modulation Signal permuting.Different in the NRZI transform code of carrying out the data rows " 5C " under this conversion and the situation of not carrying out.This is because by replacement data row " AE ", the final waveform of the NRZI transform code of data rows " AE " is transformed to the cause of " 0 " from " 1 ".Be accompanied by the final wave form varies of the NRZI transform code of data rows " AE ", the polarity of the wave recording of data rows [5C] also changes thereupon.
Like this, by imbedding medium mark modulation signal, then the NRZI modulation code of its main information modulated signal changes, and flip-flop suppresses control system and gets muddled.
(shift conversion step in detail)
Fig. 9 A～9D is a mode chart of showing the data rows of passing when modulating with modulator shown in Figure 2.
Data word A shown in Fig. 9 A～D is the coded word A shown in Fig. 9 B～D by code conversion, and then is transformed to the coded word A ' shown in Fig. 9 C～D ' by connecting rule treatments.Then, adjacent coded word A ', the D ' contravariant in position with replacement media mark modulation signal is changed to the coded word A shown in Fig. 9 D, D.In detail, after coded word A '～D ' contravariant is changed to coded word A～D, coded word MM is imbedded coded word A～D.Thus, can obtain coded word A, MM (title), MM (end), D, code A and code D can regenerate from coded word A, MM (title), MM (end), D.Certainly, because imbed coded word MM (title), MM (end), so do not regenerate coded word B and C.Imbedding coded word MM cause is inverse transformation coded word A, D, so can reduce the number of times of wrong regeneration.In this inverse transformation, use the table of Fig. 4 B, and do not use the table of Fig. 3 A, 3B, 4A.On the contrary,, then obtain coded word A ', MM (title), MM (end), D ' if coded word MM is imbedded coded word A '～D '.Coded word A ', MM's (title) is right, coded word MM (title), D ' to because with to connect rule not corresponding, so in this case, coded word A ', MM (title), MM (end) D ' is not changed to coded word A～D by contravariant yet.Replace it, in transducer shown in Figure 2,, as a result of can realize same processing by stopping to connect rule treatments (replacing after coded word A '～D ' contravariant is changed to coded word A～D, imbedding word MM).
Thereafter, by coded word B ', C ' being replaced into the coded word MM of medium mark figure signal, generating code word row A, MM, D imbed medium mark modulation signal in main information modulated signal.
By such processing, if just correctly demodulation such as defective do not take place for coded word A, D.
When generating this medium mark modulation signal MM, coded word A, D are sent to medium mark modulation unit (MM Modulator) 14, select medium mark modulation signal to make modulation rule do not take place to violate in main information.Violation modulating rule in this said main information is meant the violation state processing, violates RLL etc.
(comparative example 1)
Figure 10 A～10C is the mode chart that expression ought not connect the data rows of passing under the situation of rule treatments, is the figure of the comparative example of presentation graphs 9A～9D.Imbed medium mark modulation signal merely at this.
Data word A～D shown in code conversion Figure 10 A generates the coded word A～D shown in Figure 10 B.At this moment, select the state of code conversion with the data word before data word A～D.And then, with medium mark modulation signal (MM) displacement coded word B, C, generate the main information modulated signal of having imbedded the medium mark modulation signal shown in Figure 10 C.
When the main information modulated signal that demodulation generates like this, differentiate the state that in the modulation of present coded word, uses with code word of future generation usually.Specifically, use and the corresponding status information demodulation code of coded word B word A, use and the corresponding status information demodulation code of coded word C word B.That is, with and the opposite flow process of state processing in when modulation state processing of separating timing.
Therefore, only be the state rule that conversion in medium mark modulation signal (MM) can be ignored coded word.For example, eliminate the information of the state of indication coded word A in Figure 10 A～10C, coded word A is in that to separate timing higher by the possibility of erroneous conversions.
In contrast, in Fig. 9 A～9D, when generating the medium modulation signal, because carry out modulation treatment, so do not have the danger that the information of the state of indication coded word is eliminated by the state corresponding with adjacent coded word.
(comparative example 2)
Figure 11 A～11D is a mode chart of showing the data rows of passing when connecting rule treatments, is the figure of the comparative example of exploded view 9A～Fig. 9 D.Imbed medium mark modulation signal merely at this.
Data word A～D shown in code conversion Figure 11 A generates the coded word A～D shown in Figure 11 B.At this moment, select the state of code conversion with data word A～D data word before this separately.And then, based on connecting rule, coded word A～D is changed to coded word A '～D ' (Figure 11 C).Thereafter, medium mark modulation signal (Figure 11 D) is imbedded with medium mark modulation signal (MM) displacement in the zone of coded word B ', C ' in main information modulated signal.
In this case, by with medium mark modulation signal (Code MM) displacement coded word B ', C ', when the regeneration of main information modulated signal, can not revert to coded word A, D to coded word A ', D '.That is, can not carry out demodulation based on connecting rule, data word A～D can not regenerate.
(details of handled data in disc recording apparatus)
Below, the details of the data of handling in the disc recording apparatus of Fig. 1 is described.
Figure 12 is the mode chart that is illustrated in the Frame structure that is generated among the data frame generating unit R01.Frame is made of sector identifier (ID), ID error-detecting symbol (IED), preparation data (RSB), master data (as the content-data of general data), error-detecting symbol (EDC).
Figure 13 be show to generate additional from PO/PI generation unit R051 output error correction symbol external PO and the mode chart of the ECC piece of internal symbol PI.Additional error correction symbol PO, PI on the data block of the Frame that constitutes 16 Figure 12.
Figure 14 shows the mode chart of dispersion from the ECC piece of the error correction symbol external PO of PO interleaved units R06 output.
Figure 15 shows from medium mark (MM) permute unit R14 to export the mode chart of the physical sector of the state of combining medium marking signal (MM).By medium mark modulation signal (MM) decentralized configuration on a plurality of physical sectors, make the error correcting capability of main information can be too not poor, can improve the recovery possibility of main information.The decentralized configuration of medium mark modulation signal is relevant with the raising of its hiding property.
(variation 1)
As mentioned above, be restricted to the pattern that in main information, does not produce the violation modulating rule usually as the selected pattern of medium mark modulation signal.Its result, in order to ensure the quantity of the pattern of medium mark modulation signal, medium mark modulation signal to imbed the zone big, separating the zone that timing regenerated by mistake and might increase in main information.
Figure 16 A～Figure 16 E is the mode chart that is illustrated in the data rows of passing in the shift conversion step different with Fig. 9 A～Fig. 9 D.
Data word A shown in Figure 16 A～D is transformed to the coded word A shown in Figure 16 B～D, and then, by connecting rule treatments, be transformed to the coded word A ' shown in Figure 16 C～D '.Then adjacent with the position of replacement media mark modulation signal coded word A ', D ' is changed to coded word A, D (Figure 16 D) by contravariant.Processing before this is the same with Fig. 9 A～Fig. 9 D.
, by coded word B ', C ' being replaced into the coded word MM of medium mark modulation signal, generate the coded word row A shown in Figure 16 E thereafter ", MM, D ", in main information modulated signal, imbed medium mark modulation signal.That is,, coded word row A, D are transformed to coded word row A respectively except coded word B ', C ' being replaced into the coded word MM of medium mark modulation signal ", D ".
At this moment, the coded word row A after the conversion is determined in the combination of coded word MM and coded word row A, D by medium mark modulation signal ", D ".This is because do not produce the cause of violating modulating rule in main information.At this, coded word A ", D " and the same with coded word row A, D when main demodulates information, be the pattern of return data word A, D.For example, when the result at the data word D of state 0 modulated is set to coded word D, can be set to coded word D " with the result that state 1 or 2 has been modulated data word D.In addition, the order of generation medium mark modulation signal MM is the same with the situation of Fig. 9 A～9D.
By such processing, the same with Fig. 9 A～Fig. 9 D, have only coded word B, C to have misdata, coded word A in main demodulates information side ", D " only otherwise producing defective etc. just can correctly regenerate.
(variation 2)
Figure 17 A～Figure 17 C is the mode chart that is illustrated in the data rows of passing when not connecting rule treatments on the locational data word that is connected in medium mark modulation signal (MM) displacement.The generation method of medium mark modulation signal is the same with the situation of Fig. 9 A～Fig. 9 D.
(variation 3)
In Figure 18 A～Figure 18 D, after the displacement of having been undertaken by the processing shown in Figure 17 A～Figure 17 C in medium mark modulation signal (MM), coded word row A, D are transformed to coded word row A respectively ", D ".At this moment, with the coded word MM of medium mark modulation signal and the combination of coded word row A, D, the coded word row A after the same definite conversion with Figure 16 E ", D ".
(detuner)
Figure 19 shows that demodulation imbeds the block scheme of the example that the demodulating equipment of the main information modulated signal of medium mark modulation signal (MM) constitutes.
The channel bit stream (Channel bit stream) of imbedding the main information modulated signal of medium mark modulation signal is transfused to the connection rule and removes unit (Code Separator), releasing is based on the code conversion that connects rule, generating code word (a kind of inverse transformation).And then coded word is transfused to demodulation table unit (Decode Table), removes the code conversion based on code conversion table such shown in Fig. 3 A, generates data word.Thus, main information modulated signal under the state of having imbedded medium mark modulation signal by demodulation process.And then, in the processing in demodulation table unit (Decode Table), use from connecting rule and remove the option table information of unit output (with the relevant information of selection of table, specifically status information).
Carry out correction process by data word being input to the 1st correction process unit (ECC (1)), restore the data word of imbedding the preceding main information of (displacement) medium mark modulation signal.If from the viewpoint of correction process, be because imbed the same cause of misdata that medium mark and general defective in the main information produce.
The channel bit stream of imbedding the main information modulated signal of medium mark modulation signal (MM) also is imported into medium mark demodulating unit, carries out the demodulation of medium mark modulation signal.In the medium demodulating unit, the input media mark is imbedded positional information (MM Position), has only the object that becomes demodulation with the zone of this information representation in channel bit.
Because dispersion medium mark modulation signal and imbedding in main information modulated signal, so the demodulation of the medium mark modulation signal in medium mark demodulating unit and output thereof are intermittently carried out.So intermittently the medium mark restituted signal of output is input to medium mark error correction unit (ECC (2)), is concentrated at this.The medium mark restituted signal of being concentrated is become the medium marking signal of having implemented error correction by correction process like this.
In this correction process, can use the error flag that timing produces of separating at medium mark modulation signal.That is,, be judged to be in medium mark modulation signal and produce mistake, error flag can be provided in the time originally can not occurring in the pattern of separating the timing utilization of medium mark modulation signal.
At this moment, by in the modulation system of medium mark, using the mode different, can improve the reliability of error flag with the modulation system of main information.This has following reason.Even build the demodulation in the detuner of main information of medium mark modulation signal, in the modulator of main information, modulate once more, also use the modulating mode different with main information, make and do not return first medium marking signal (can not inverse transformation).Its result uses the high modulation system of the tediously long degree of conversion easily, and the tediously long degree of conversion wherein is to compare with the figure place that originally needs to have used more multidigit in medium mark modulation mode.In this case, in medium mark modulation mode, there is the unemployed pattern of a plurality of scripts.Its result, when the separating timing and unemployed pattern occurred originally of medium mark modulation signal, as in medium mark modulation signal, having taken place when wrong, can detect wrong possibility (can provide reliability high error correction error flag) is provided.
(application examples)
The example application of the modulation system of present embodiment is described.
1. in the recording processing of regeneration in the Special disc
Figure 20 is the figure that is illustrated in encryption order one example of the content in the regeneration special-purpose cd.
The dish fabricator obtains content 300 there from the copyright owner, and title key (Kt) 301.In addition, the dish fabricator obtains the media key of using (Km) in content-encrypt from copyright protection (CP) management organization, and with the media key block (MKB:MediaKey Block) of equipment key all living creatures one-tenth.
In cryptographic processing unit 307, title key (Kt) is encrypted generation encrypted content (Enc-Contents) as encrypting key to content.In cryptographic processing unit 306,, generate encrypted name key (Enc-TK) with the intrinsic key of medium (Kmu) encrypted name key (Kt).The intrinsic key of medium (Kmu) that uses this moment is by generating processing unit 3053 mixing capacity identifiers (Volume ID) 311 and media key (Km) generation with key.
Write in the processing unit 312 hiding Info, capacity identifier (Volume ID) is as hiding Info, be embedded in dish manufacturer and have in proprietorial all data (RP-data:Replicator Proprietary Data), generate and imbedded all data (RP-data+MM).In this hiding data writes processing in the processing unit 312, can be useful in the modulating device shown in the above-mentioned embodiment.That is, in this case all data (RP-data) as main information, capacity identifier (Volume ID) as the modulation that hides Info respectively, to imbedding that main information hides Info.
Making record such generation media key block (MKB), imbed all data (RP-data+MM), encrypted name key (Enc-TK), and the stamper of encrypted content (Enc-Comtents).And then, use this stamper, make the regeneration Special disc that records encrypted content.
2. in the Regeneration Treatment of regeneration in the special-purpose cd
Figure 21 is the figure that shows the Regeneration Treatment order of the regeneration dedicated medium made from order shown in Figure 20.At this, show with the data that are connected on AV (Audio/Video) the code translator plate that is installed on the computing machine and read the situation that drives the regenerative recording medium.
Data are read driving and are read media key block (MKB) from recording medium, imbed all data (RP-data+MM), encrypted name key (Enc-TK) and encrypted content (Enc-Contents).
Data read drive and AV code translator plate between carried out after the authentication processing, read driving to AV code translator plate output medium key piece (MKB), imbed all data (RP-data+MM) from data.The signal of output this moment driving side encryption, in the decoding of AV code translator plate one side, prevents improper the stealing on transmission lines with the time limit key.
Encrypted name key (Enc-TK) and encrypted content (Enc-Contente) are read driving from data and are not cryptographically directly transmitted to AV code translator plate.
Imbed all data (RP-data+MM) and be transfused to the detecting unit 330 that hides Info, be separated into the capacity identifier that all data (RP-data) and conduct hide Info.Processing in this hiding detecting unit 330 can be used expression in the above-described embodiment, the demodulation process of carrying out in detuner.That is, in this case all data as main information, the capacity identifier as hiding Info, is carried out demodulation respectively, carry out main information and separating of hiding Info.
In AV code translator plate one side, by a media key block (MKB) that receives, the equipment key is provided with (Device Key Set) 320 input MKB processing units 321 and extracts media key (Km) out.Media key (Km) and capacity identifier generate the intrinsic key of mixed generation medium (Kmu) in the processing unit 322 at key.
With medium fixedly key (Kmu) in decoding unit 323, decipher encrypted name key (Enc-TK), detect title key (Kt).With title key (Kt) decoding encrypted content (Enc-Contents), the content of literary composition is equalled in regeneration with decoding unit 308.
As mentioned above, the capacity identifier is recorded in the recording medium under as the state of imbedding all data (RP-data) that hides Info.Therefore, even the total data of copy recording medium, as long as can not separate the capacity identifier, decoding is just very difficult by the medium encrypted content of illicit copies.In addition, the capacity identifier is detected in driving because only and obtain transmitting between the AV code translator plate of authentication processing, all are stolen in transmission is difficult, can seek the actual effect of copyright protection.
3. record regenerating is with the recording processing in the CD
The situation of record regenerating with the recording processing in the CD that be useful in is described.At record regenerating with in the CD, in the time of can being divided into the manufacturing of CD and during user's record.
(1) during the manufacturing of recording medium
Contents processing when Figure 22 display record is regenerated with the manufacturing of CD.
The dish fabricator obtains the media key of using (Km) from copyright protection (CP) management organization content-encrypt, and with the media key block (MKB) of equipment key all living creatures one-tenth.
Write in the processing unit 312 hiding Info, medium mark (MM) is imbedded all data as hiding Info, generate and imbedded all data.Hiding Info at this writes in the processing in the processing unit, can be useful in the modulation replacement Treatment shown in the above-mentioned embodiment.That is, in this case, as main information, as hiding Info, modulation respectively is to imbedding that main information hides Info medium mark (MM) all data.
In addition, the dish fabricator prepares the media recognition symbol (M-ID:Mrdia ID) of unique identification record medium.
Manufacturing records these media key block (MKB), imbeds all data (RP-data+MM), and the record regenerating CD of media recognition symbol (Media ID).
(2) during user record
Figure 23 is the figure of the order when being illustrated in as shown in Figure 22 encryption content record on the record regenerating medium that constitutes.At this, show with the data on AV (Audio/Video) the scrambler plate that is mounted on computers to write the situation that driving is write down recording medium.
Driving is read media key block (MKB), media recognition symbol (M-ID), is imbedded all data (RP-data+MM) from recording medium.
Imbed all data and be imported into the detecting unit 2310 that hides Info, be separated into the medium mark (MM) that all data and conduct hide Info.In the processing in this hides Info detecting unit 2310, can be useful in the demodulating equipment shown in the above-mentioned embodiment.That is, in this case all data as main information, medium mark (MM) as the respectively demodulation that hides Info, is carried out main information and separating of hiding Info.
Generate medium mark identifier (MM-ID) with mixed cell 2312 blending agent identifiers (M-ID) and medium mark (MM).
Between driving and AV scrambler plate, carried out after the authentication processing, from driving to AV scrambler plate output medium key piece (MKB), medium mark identifier (MM-ID).The signal of output this moment is encrypted in driving one side with the time limit key, and is decoded in AV scrambler plate one side, prevents to be stolen by improper in transmission lines.
In AV scrambler plate one side,, extract media key (Km) out in equipment key setting (Device Key Set) the input MKB processing unit 2314 by the media key block (MKB) that receives.Media key (Km) and medium mark identifier (MM-ID) generate the intrinsic key of mixed generation medium (Kmu) in the processing unit at key.
In ciphering unit 2318,, generate encrypted content, be recorded on the recording medium with title key (TK) encrypted content.
In ciphering unit 2320,, generate encrypted name key (Enc-TK) and be recorded on the recording medium with the intrinsic key of medium (Kmu) encrypted name key (TK).
4. record regenerating is with the Regeneration Treatment in the CD
Figure 24 shows that reading out in the encrypted content decoding and the regeneration of writing down in the formation of Figure 23 puts down the figure of the order of civilian content.At this, show with the data on AV (Audio/Video) the code translator plate that is mounted on computers to write the situation that driving is write down recording medium.
Driving is read media key block (MKB), media recognition symbol (M-ID), is imbedded all data (RP-data+MM), encrypted name key (Enc-TK) and encrypted content (Enc-Contents) from recording medium.
Imbed all data (PR-data+MM) and be transfused to the detecting unit that hides Info, be separated into the medium mark (MM) that all data (RP-data) and conduct hide Info.In the processing in this hides Info detecting unit, can be suitable for the demodulating equipment of showing in the above-described embodiment.
Blending agent identifier (M-ID) and medium mark (MM) generate medium mark identifier (MM-ID) in mixed cell 2412.
Between driving and AV code translator plate, carried out after the authentication processing, from driving to AV code translator plate output medium key piece (MKB), medium mark identifier (MM-ID).The signal of output this moment driving a side by ciphering unit 2414～2416 encryptions, with decoding unit 2418～2420 decodings, prevents wrongful the stealing on transmission lines in AV code translator plate one side with the time limit key.
Encrypted name key (Enc-TK) and encrypted content (Enc-Contents) are read driver from data and are not cryptographically directly transmitted to AV code translator plate.
By acquired media key block (MKB) and equipment key setting (Device Key Set) are input to MKB processing unit 2422, extract media key (Km) in AV code translator plate one side out.Media key (Km) and medium mark identifier (MM-ID) generate the mixed back generation intrinsic key of medium (Kmu) in the processing unit at key.
In decoding unit 2426,, detect title key (Kt) with the intrinsic key of medium (Kmu) decoding encrypted name key (Enc-TK).In decoding unit 2428, decipher encrypted content (Enc-Contents) with title key (Kt), the content of the flat literary composition of regeneration.
As mentioned above, medium mark (MM) is recorded in the recording medium under as the state of imbedding all data (RP-data) that hides Info.Therefore, even the data of copy recording medium in all, as long as can not separating medium mark (MM), decoding be just very difficult by the encrypted content of the medium of illicit copies.In addition, medium mark (MM) is because only detect processing, so can guarantee the hiding property of medium mark (MM), the actual effect of seeking copyright protection in driver.
(embodiment 2)
Figure 25 shows that the inside of modulation treatment unit R 071 shown in Figure 1 constitutes the block scheme of details, and is corresponding with Fig. 2, is embodiments of the present invention 2.
The coded word (Code Word) of output is transfused to medium mark modulation unit (MM Modulation) 24 from code table (Code table) unit 21, uses when the modulation of medium mark (MM).
Use in the State Control of this information when the medium mark modulation.In addition, can handle together medium mark and the coded word of imbedding before and after it.That is, between medium mark and the coded word before and after it, use to connect rule, by imbedding the transmission that medium marking signal (MM) can reduce the mistake of generation.
In other respects because this figure in fact with Fig. 2 do not have different, all detailed.
(embodiment 3)
Figure 26 shows the modulation treatment unit R shown in Figure 1 071 inner block scheme that constitutes details, and is corresponding with Fig. 2, is embodiment 3.
At this, the processing in code table (Code table) unit 31 and code connection (CodeConnector) processing unit 33 is carried out continuously.
Connect connection coded word (the Connected Code Word) signal that has carried out the connection rule treatments in the processing unit 33 at code and be imported into medium marking of control unit (MMController) 36.The connection rule treatments that medium marking of control unit 36 is removed in connecting coded word, the coded word that connects rule treatments is input to medium mark modulation unit (MM Modulation) 34 and medium marking signal (MM) is together handled having removed.That is, in this medium mark modulation unit 34, consider to connect rule treatments medium marking signal (MM) and the coded word (Code Word) before and after it.
By switching from the connection coded word of DSV control module (DSV Controller) 35 outputs with change-over switch S, with the medium mark modulation signal (coded word that comprises its front and back) of 34 outputs, to imbedding that main information hides Info from medium mark modulation unit.
At this, the connection coded word signal from 35 outputs of DSV control module is input to medium marking of control unit 36.This is because medium marking of control unit 36 detects the number of " 1 " of first channel bit (Channel bit) in the zone of inserting the medium marking signals, and the number of " 1 " that can control the channel bit of the medium marking signal that inserts is set to the cause of counting equally.Its result can prevent owing to the deterioration of imbedding the flip-flop rejection characteristic that the medium mark produces in the signal after processing in DSV control module 35.
(embodiment 4)
Figure 27 shows that the inside of modulation treatment unit R 071 shown in Figure 1 constitutes the block scheme of details, and is corresponding with Fig. 2, is embodiment 4.
At this, code table unit 44 that main information is used and medium mark modulation unit 44 move side by side, respectively generating code word and medium modulation signal.At this moment, status register (StateRegister) 42 is shared in code table unit 41 that main information is used and medium mark modulation unit 44, and both can switch with change-over switch S1.In addition, the output of this switching and the coded word in change-over switch S2 and medium mark modulation signal is switched interlock and is carried out, according to whether in the medium marking signal, replacing, make code table unit 41 and 44 alternating movements of medium mark modulation unit (being) in order to make 44 actions of medium mark modulation unit on the character position of in the medium marking signal, replacing.
Be transfused to DSV control module 45 from the channel bit (Channel bit stream) of change-over switch S2 output, in the control of the status register 42 that adopts DSV control module 45, use.That is, DSV control module 45 monitors the accumulative total flip-flop of channel bit stream, changes the state of status register 42 expressions according to this supervision result.By according to this Status Change, code table unit 41 and 44 actions of medium mark modulation unit and carry out DSV control.
(embodiment 5)
Figure 28 relates to embodiments of the present invention 5, is illustrated in the situation of combination MM modulating device in the 8-16 modulation system shown in the dvd standard.
The modulation system that the front explanation is represented with dvd standard.In the modulation system of dvd standard, each symbol is prepared 4 states (State), constitute the code table unit so that the modulating rule in each symbol connects is not violated.And then be provided with 4 for the data word of a part and append state (State), carry out DSV control with it.Because synchronizing signal is selection mode also, thereby can carry out DSV control, by also carrying out DSV control with it.When can DSV the data word and the synchronizing signal of control come then, constitute a plurality of channel bit stream in the storer by respectively a plurality of pattern conversions being stored in separately, carry out DSV respectively independently and detect.Below come then when specific data word and the synchronizing signal that can carry out DSV control, select the few side of DSV in the stream in being stored in the storer of front, other stream goes out of use.Repeat finally to select the control of the pattern conversion of the few stream of DSV with such action.
Figure 28 is the embodiment corresponding with the modulation system of such dvd standard.
This is modulated in 2 tables (master meter (Main table) substitutes table (Substitution table)) and carries out side by side.By from 2 tables modulation result separately, selecting the little side of DSV to export, control DSV.
In master meter,, define 16 modulation symbol to the data word of decimal representation from 0 to 256 and each of 4 states.In substituting table,, define 16 modulation symbol for from 0 to 87 data word of decimal representation and each of 4 states.
The value that storer a (2814) and storer b (2816) maintenance have been imported.
Shu Chu channel bit (a) and (b) (Channel bit (a) and (b)) DSV separately detects separately with DSV detecting device 2818,2820 like this, and testing result is input to DSV control module 2822.DSV control module 2822 by the output with change-over switch (dotting) state of a control register 2812, carries out DSV control according to this testing result.DSV control module 2822 is control its switch S (a) also, and the output of storer 2814,2816 is offered the preceding digit counter 2824 of displacement, delay cell 2828 selectively.
Digit counter (Transition bit counter) 2824 counting medium marking signals are imbedded " 1 " number of the channel bit (channel bit) in zone before the displacement, judge that its total number is odd number or even number, according to the result, the medium mark modulation is outputed to medium mark modulation unit 2826 with status signal.
In medium mark modulation unit 2826 and the medium mark together, input media mark modulation status signal makes the odd even of total of " 1 " of the channel bit before odd even and the displacement of total of " 1 " of medium mark modulation pattern consistent.By carrying out such processing, prevent that the medium mark from imbedding the deterioration of caused DSV characteristic.That is, when having carried out the NRZI conversion generating for tracer signal, the polarity of terminal section that makes the medium mark modulation pattern that explains orally in Fig. 8 is with not carry out the polarity of medium mark when imbedding consistent.And then small change only takes place among the DSV in stream is all, thereby can ignore it in the difference of the DSV in the MM mode region.
Thereafter, with change-over switch S (b) (Swich (b)), switch the data channel bit stream (Data channel bit stream) (it is by delay cell 2828) of main information, the channel bit of medium mark modulation signal (MM Code word) (in other words, adopt medium mark modulation signal to replace), generate the data channel bit stream.
(other embodiment)
Embodiments of the present invention are not limited to above-mentioned embodiment, can expand, change, and expansion, embodiment after changing are also contained in the technical scope of the present invention.
Claims (10)
1. modulating device possesses:
Main information is carried out the main information conversion unit of code conversion with the 1st modulation system;
With 2nd modulation system different with the 1st modulation system based on the customizing messages converter unit that customizing messages is carried out code conversion through the main information of code conversion;
Part through the main information of above-mentioned code conversion is replaced into through the customizing messages of the above-mentioned code conversion replacement Treatment unit with the output channel bit stream, is scattered in a plurality of physical sectors of above-mentioned channel bit stream through the customizing messages of above-mentioned code conversion;
The flip-flop that suppresses the flip-flop of above-mentioned channel bit stream suppresses the unit.
2. modulating device according to claim 1 is characterized in that:
Based on code conversion before and after the main information conversion table of the corresponding expression of channel bit of main information, the above-mentioned main information of code conversion.
3. modulating device according to claim 1 is characterized in that also comprising:
Based on the connection rule list of expression that the combination of the combination of channel bit adjacent before the handling channel bit adjacent with the processing back is mapped, to carry out the connection rule treatments unit of code conversion through the main information of above-mentioned code conversion.
4. modulating device according to claim 3 is characterized in that:
The channel bit through the main information of code conversion that above-mentioned connection rule treatments unit is pair adjacent with the channel bit that is replaced into customizing messages is not carried out code conversion.
5. modulating device according to claim 3 is characterized in that also comprising:
Connect regular anti-processing unit, make and be replaced into the adjacent channel bit of channel bit of customizing messages, promptly based on the state of above-mentioned connection rule list handle before the channel bit of the main information of code conversion returns to above-mentioned connection rule treatments.
6. modulating device according to claim 1 is characterized in that:
Main information constitutes with the channel bit of specified length, and based on using the status information by the regulation of the channel bit before the channel bit of code conversion to carry out the code conversion of above-mentioned main information.
7. modulating device according to claim 1 is characterized in that:
Above-mentioned main information comprises as all data of entitlement object and encrypted content, and above-mentioned customizing messages is configured for deciphering the part of the key of above-mentioned encrypted content.
8. modulator approach possesses:
Main information is carried out the step of code conversion with the 1st modulation system;
With 2nd modulation system different with above-mentioned the 1st modulation system based on the step of customizing messages being carried out code conversion through the main information of above-mentioned code conversion;
Part through the main information of above-mentioned code conversion is replaced into through the customizing messages of the above-mentioned code conversion step with the output channel bit stream, is scattered in a plurality of physical sectors of above-mentioned channel bit stream through the customizing messages of above-mentioned code conversion;
The step that suppresses the flip-flop of above-mentioned channel bit stream.
9. modulator approach according to claim 8 is characterized in that:
The step that suppresses above-mentioned flip-flop comprises the step of the DSV value that calculates above-mentioned channel bit stream.
10. the manufacture method of an optical record medium possesses:
Generate the step of encrypted key data;
Generation comprises the step of the main information of all data;
Generate the step that hide Info different with above-mentioned all information;
The step of above-mentioned main information being carried out code conversion with the 1st modulation system;
Carry out the step of code conversion with the 2nd modulation system different to hiding Info based on main information through above-mentioned code conversion with above-mentioned the 1st modulation system;
With through the displacement of the customizing messages of above-mentioned code conversion through the part of the main information of above-mentioned code conversion step with the output channel bit stream, be scattered in a plurality of physical sectors of above-mentioned channel bit stream through the customizing messages of above-mentioned code conversion;
The step that suppresses the flip-flop of above-mentioned channel bit stream;
Through the key data of above-mentioned encryption, be embedded to step on the optical record medium through the channel bit stream of above-mentioned inhibition.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004134666 | 2004-04-28 | ||
| JP2004-134666 | 2004-04-28 | ||
| JP2004134666A JP4220431B2 (en) | 2004-04-28 | 2004-04-28 | Modulation device, recording medium recording device, and recording medium |
| JP2005018590A JP4557729B2 (en) | 2005-01-26 | 2005-01-26 | Modulator |
| JP2005-018590 | 2005-01-26 | ||
| JP2005018590 | 2005-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1691177A CN1691177A (en) | 2005-11-02 |
| CN1691177B true CN1691177B (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510052441 Expired - Fee Related CN1691177B (en) | 2004-04-28 | 2005-02-28 | Modulator, modulation method and method of manufacturing an optical recordable medium |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4220431B2 (en) |
| CN (1) | CN1691177B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4557729B2 (en) * | 2005-01-26 | 2010-10-06 | 株式会社東芝 | Modulator |
| JP4461183B2 (en) * | 2008-02-22 | 2010-05-12 | 株式会社東芝 | Information recording medium and playback device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154756A (en) * | 1995-04-04 | 1997-07-16 | 松下电器产业株式会社 | Recording medium, recording method and apparatus, and reproduction method and apparatus |
| CN1410993A (en) * | 2001-09-27 | 2003-04-16 | 株式会社东芝 | Signal processing method, device and recording medium |
-
2004
- 2004-04-28 JP JP2004134666A patent/JP4220431B2/en not_active Expired - Fee Related
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2005
- 2005-02-28 CN CN 200510052441 patent/CN1691177B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154756A (en) * | 1995-04-04 | 1997-07-16 | 松下电器产业株式会社 | Recording medium, recording method and apparatus, and reproduction method and apparatus |
| CN1410993A (en) * | 2001-09-27 | 2003-04-16 | 株式会社东芝 | Signal processing method, device and recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005317136A (en) | 2005-11-10 |
| JP4220431B2 (en) | 2009-02-04 |
| CN1691177A (en) | 2005-11-02 |
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