CN1741063A - Digital data copyright protection system - Google Patents
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- CN1741063A CN1741063A CNA2005101097236A CN200510109723A CN1741063A CN 1741063 A CN1741063 A CN 1741063A CN A2005101097236 A CNA2005101097236 A CN A2005101097236A CN 200510109723 A CN200510109723 A CN 200510109723A CN 1741063 A CN1741063 A CN 1741063A
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Abstract
A digital data copyright protection system especially for unencrypted data t o protect a copyright thereof while charging a user appropriate royalties therefor. In the digital data copyright protection system, super distributio n data is received by a super distribution data receiving unit (401) for stora ge in a super distribution data storage region (402). Right management information is acquired by an RMI acquiring unit (403) for storage in an RMI storage region (404). Unencrypted data is read by a data reading unit (406), encrypted by a data encrypting unit (408) with a key extracted by a content key extracting unit (405), and then is provided with the right management information in an RMI adding unit (409) for storage. Once the data is throug h with a purchase processing in a purchase processing unit (412), the data is decrypted by the content decrypting unit (414), and is played back by a reproduction control unit (415) and a speaker (416), or provided with an ID stored in a user ID storage region (418) by a distributor ID adding unit (411) for output.
Description
The application is is " on August 30th, 2000 ", application number the applying date for " 00801899.5 ", be entitled as dividing an application of " digital data copyright protection system ".
Technical field
The present invention relates to a kind of digital data copyright protection system, relate in particular to a kind of copyright that is used to protect music data, collect the system of suitable usage charges therefrom simultaneously to the user.
Background technology
In recent years, CD (laser disc) is owing to music becomes the medium that receive an acclaim.This CD is easy to carry about with one, so people are convenient to they are brought other people and allow them appreciate.Music distribution between this hand and the hand is usually millions of.The problem here is, almost can't protect CD not to be subjected to copy right piracy (being unauthorized copying) influence.In addition, easily this CD being copied into recently can be at the commercial CD-R that buys (CD-R).As the medium that before have been recorded in the music data among the CD, MD (compact disk) also begins to receive an acclaim.Therefore, can duplicate music data, and if music data is enjoyed by other people, then these copyright holders will suffer damage beyond the scope of the Copyright Law by them.
In order to prevent this easy replication, in 9-34841 (97-34841) number day disclosure bulletin, disclosed a kind of legacy system, be used for before the CD distribution, CD being encrypted, on network, send decryption key, and therefore keep accounts.Equally, Online Music is issued and is kept accounts popular apace on network.
But by this legacy system, Online Music distribution and book keeping operation are individualized one to one, and therefore this music data issue between the user not as CD hand adversary and issued the ground costliness.Up to now, promote the distribution of music data also not become Online Music distribution publication.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of copyright protecting system in particular for the Online Music distribution, this system has realized its protection by collect suitable usage charges for the copyright of music data, and has promoted the distribution of music data.
The present invention has following characteristics, in order to achieve the above object.
First aspect of the present invention is at a kind of digital data copyright protection system, be used for collecting suitable usage charges to the user, protect the copyright of numerical data simultaneously, this system comprises: the content distribution unit, can on network, issue the super release data that comprises described numerical data; A plurality of digital data record and reproducers that link to each other by described network, each can store the super release data that receives from described content distribution unit, online described numerical data, and the described super release data that will be stored in wherein sends to other people; With the book keeping operation processing unit, can on described network, communicate by letter with reproducer with described digital data record, and handle through overregistering, to collect described usage charges, wherein, each all communicated by letter described digital data record and reproducer with described book keeping operation processing unit before reproducing described numerical data, with by described network from described content distribution unit or other digital data records and reproducer when receiving super release data, handle through handle the purchase of preparing for described book keeping operation, with before distribution, sender ID is added to by described network, from described content distribution unit or the super release data that receives of other digital data records and reproducer, wherein, when the super release data of handling for being subjected to keeping accounts is provided with described sender ID, described book keeping operation processing unit is handled through bonus according to the user by sender ID definition.
As mentioned above, in first aspect, provide a kind of digital data copyright protection system, can protect copyright, collected suitable usage charges to the user simultaneously, and by using bonus to lure user's release data to make the copyright holder obtain interests greatly.
According to a second aspect of the invention at a kind of digital data record and reproducer, the content that can storage package be contained in the numerical data of encrypting under first system, and super release data with authorization administration information admin table of the content key that is used for described first system, and can be by communicating by letter with the book keeping operation processing unit that is connected by network, reproducing described content through handling the back for the purchase of book keeping operation processing preparation, described apparatus characteristic is to comprise: super release data receiving trap can receive described super release data from the outside; Super release data memory storage can be stored described super release data; Buy treating apparatus, can handle by described purchase, be stored in the content that comprises in the super release data in the described super release data memory storage with reproduction according to user's instruction; DAA can extract described super release data from described super release data memory storage; The contents decryption device can be when carrying out described purchase and handle, and under described first system, to being stored in the super release data deciphering in the described super release data memory storage, and extracts described content; Transcriber can reproduce the content of being extracted by described contents decryption device; With sender ID adding apparatus, can be to as encrypting for first user ID of the exclusive identifying information of equipment, and first user ID that will encrypt is added to the super release data by described DAA extraction, exports with the outside.
As mentioned above, in second aspect, provide a kind of digital data record and reproducer, can collect suitable usage charges, and correspondingly comprised super release data, protected copyright such as contents such as music by distribution to the user.
A third aspect of the present invention is at a kind of book keeping operation processing unit, can store super release data, and pass through network, from can after book keeping operation is handled, reproducing the digital data record and the reproducer of content, reception is corresponding to the book keeping operation control information of described super release data, represent that who has issued the sender ID of described super release data, and corresponding to the record of described numerical data and the sender ID of reproducer, described book keeping operation processing unit comprises: book keeping operation process information receiving trap, can receive described book keeping operation control information and described sender ID: sender's authorization device can receive described sender ID and identification sender; The book keeping operation treating apparatus can be according to the book keeping operation control information that is received by described book keeping operation process information receiving trap, to the processing of keeping accounts of the sender by described sender's authorization device definition; With the bonus treating apparatus, the sender that can define for the sender ID that is received by described book keeping operation processing receiving trap carries out bonus and handles.
As mentioned above, in the third aspect, provide a kind of book keeping operation processing unit; can protect copyright; simultaneously collect suitable usage charges, and by giving the user bonus, lure user's release data and make the copyright holder obtain interests more by sender ID definition to the user.
The invention provides a kind of digital data reproducing apparatus, be used to obtain to comprise the encrypted content of encrypted digital content and ID, to reproduce digital content, this digital data reproducing apparatus comprises: receiving trap can receive described encrypted content from the outside; The contents decryption device can be deciphered described encrypted content; Transcriber can reproduce decrypted digital content; The ID extraction element can extract an ID who is included in the encrypted content that is received by described receiving trap; With the ID adding apparatus, enough user-dependent the 2nd ID with the described equipment of use of energy replace the described ID in described encrypted content, and to the outside of described reproducer output encrypted content.
The present invention also provides a kind of numerical data reproducting method that is applied to digital data reproducing apparatus, be used to obtain to comprise the encrypted content of encrypted digital content and ID, to reproduce digital content, this numerical data reproducting method comprises: receiving step is used for receiving from the outside described encrypted content; The contents decryption step is used to decipher described encrypted content; Reproduce step, be used to reproduce decrypted digital content; The ID extraction step is used for extracting an ID who is included in the encrypted content that is received by described receiving step; Add step with ID, be used for the described ID that replaces at described encrypted content with user-dependent the 2nd ID that uses described equipment, and to the outside of described reproducer output encrypted content.
From below in conjunction with accompanying drawing, detailed description of the present invention, these and other purposes of the present invention, characteristics, aspect and advantage will be more obvious.
Description of drawings
Fig. 1 is a block scheme, and the structure according to the digital data copyright protection system of the first embodiment of the present invention is shown;
Fig. 2 is the diagrammatic sketch that the structure of first super release data is shown;
Fig. 3 is the diagrammatic sketch that the structure of second super release data is shown;
Fig. 4 illustrates the diagrammatic sketch that how user receive him under this copyright protecting system super release data is issued to other user;
Fig. 5 is the block scheme that the structure of the digital data record of first embodiment and reproducer is shown;
Fig. 6 is the diagrammatic sketch that illustrates by general computer implemented first kind of digital data record and reproducer 1011;
Fig. 7 illustrates digital data record and the reproducer process flow diagram for the operation that obtains authorization administration information;
Fig. 8 is the diagrammatic sketch that the structure of authorization administration information admin table is shown;
Fig. 9 is the diagrammatic sketch that the structure of super release data management information 1605 is shown;
Figure 10 is the process flow diagram that the operation that digital data record and reproducer be used to reproduce is shown;
Figure 11 illustrates the block scheme that sender ID increases the detailed structure of unit 411;
Figure 12 is the block scheme that the detailed structure of buying processing unit 412 is shown;
Figure 13 is the diagrammatic sketch that an example of record keeping process information is shown;
Figure 14 illustrates the process flow diagram that digital data record and reproducer are used to buy the operation of processing;
Figure 15 is the block scheme that the detailed structure of record keeping processing unit 801 is shown;
Figure 16 illustrates record keeping processing unit 801 be used to the to keep accounts process flow diagram of the operation handled;
Figure 17 is the block scheme that illustrates according to the structure of the digital data record of second embodiment and reproducer;
Figure 18 is the diagrammatic sketch of structure that the SDAF bag of a third embodiment in accordance with the invention is shown;
Figure 19 a is that other structure that the SDAF bag is shown is determined diagrammatic sketch to 19c;
Figure 20 illustrates how the SDAF title to be divided into the diagrammatic sketch that SDAF wraps;
Figure 21 is the diagrammatic sketch that an example of SDAF bag is shown;
Figure 22 is the diagrammatic sketch that the stem structure is shown;
Figure 23 and 24 illustrates source code, uses C Plus Plus to describe the stem structure;
Figure 25 a is that diagrammatic sketch how to determine the CEL attribute list is shown to 25c, wherein uses the tag structure:
Figure 26 is the diagrammatic sketch that the corresponding relation between key pair and the CEL is shown;
Figure 27 illustrates source code, uses C Plus Plus to describe key to structure;
Figure 28 illustrates the diagrammatic sketch of how being found CEL by pilot data;
Figure 29 is the diagrammatic sketch of an example that the structure of pilot data is shown;
Figure 30 is the diagrammatic sketch of another example that the structure of pilot data is shown;
Figure 31 is the specification table that the MPEG2-AAC that imposes on audio frequency CEL is shown;
Figure 32 is the specification table that the JPEG that imposes on image C EL is shown;
Figure 33 is the specification table that the MPEG-1 frame that imposes on image C EL is shown;
Figure 34 is the specification table that the PNG that imposes on image C EL is shown;
Figure 35 is the specification table that the MPEG2 that imposes on video CEL is shown;
Figure 36 is the diagrammatic sketch that the structure of time search mapping is shown:
Figure 37,38a and 38b are table and the diagrammatic sketch that is shown specifically the stem that comprises in the time search mapping;
Figure 39 is shown specifically each the table that is included in the time search mapping:
Figure 40 is the table that an example of CEL steering gear is shown:
Figure 41 a is the diagrammatic sketch that example how to issue the SDAF bag is shown to 41c;
Figure 42 a is the diagrammatic sketch that the example that how to produce the SDAF bag is shown to 42c;
Figure 43 is the outside diagrammatic sketch of portable music player;
Figure 44 is the block scheme of an example that the structure of Date Conversion Unit is shown;
Figure 45 is the block scheme that another example of Date Conversion Unit structure is shown.
Embodiment
First embodiment
With reference to Fig. 1,2 and 3, what describe below is digital data copyright protection system according to the first embodiment of the present invention.Fig. 1 is the diagrammatic sketch that the structure of digital data copyright protection system is shown.
Digital data copyright protection system comprises first to the 3rd digital data record and reproducer 1011 to 1013, is used to issue the content server 102 of numerical data, and is used for the record keeping server 103 by the processing of keeping accounts.Have by returning the interconnection of special net.Here, time special net is unrestricted, can be telephone wire.Private, satellite broadcasting net or catv network.The quantity of digital data record and reproducer here is not problem.
Among Fig. 1, first to the 3rd digital data record and reproducer 1011 to 1013 are by the PC representative that is connected to the Internet.The user reproduces on his/her digital recording and reproducer by the Internet or by such as medium receiving digital datas such as music CD.
Fig. 2 and 3 is the diagrammatic sketch that specifically illustrate the structure of the numerical data of issuing by the Internet.Numerical data among Fig. 2 comprises authorization administration information 203 and content 205.Authorization administration information 203 comprises record keeping control information 201 and content key 202.Content 205 is made of one or more music datas 204.Below, the numerical data of this configuration is called first kind of super release data.
Record keeping control information 201 comprises about information such as the validity of content quotation, preview, number of previews.Record keeping control information 201 can also comprise about being the accounting management of foundation and the information of quantity to listen to number of times (being listening to of each listener's pre-determined number) for example.Content key 202 is used for encryption and decryption to content 205.In advance content 205 is encrypted by content key 202.In advance authorization administration information is encrypted under predetermined encryption system by the key that is different from content key 202.This key is called authorization administration information key (not shown), and is typically stored in the software that can operate in first to the 3rd digital data record and reproducer 1011 to 1013.Software is used by user installation.Here, the authorization administration information key can be to information encryption in the hardware that is exclusively used in it and deciphering.
The authorization administration information key is stored in the zone that can't allow the user reach by normal operations.This zone that below user is beyond one's reach is called the zone of maintaining secrecy.Here, the zone of often will maintaining secrecy is arranged in the built-in storer of common computer device, but also can be arranged on specialized hardware, in storer or the medium.
Numerical data among Fig. 3 comprises user ID 301 and first kind of super release data 302 as shown in Figure 2.So be called second kind of super release data below the data of configuration.
User ID among Fig. 3 represents to be used to discern the information that numerical data is issued to another person's user.In predetermined encryption system, user ID 301 is encrypted, and offer each user individually.User ID 301 is stored in the above-mentioned secret zone, and can be made up of several users specific I D.This specific user ID produces when being installed to above-mentioned this software in the copyright protecting system, or is provided by network by billed services device 103 or miscellaneous equipment.The possibility that several specific user ID are formed user ID 301 is kept and is described below.
CD (external record medium 417 will be described below) comprises the content identification information of content (music data) and this content of identification in this embodiment.Content identification information is used to discern music title by the code representative that is called ISRC (international standard record code).
The content of hypothetical record on CD do not encrypted.The CD here wherein combines the zone (CD-DA) that is used for CD and the enhancing CD in CD-ROM zone.In addition, Na Li CD-ROM zone can be stored in encrypted rights management information 203 in the predetermined encryption system.
What describe below is numerical data distribution in this copyright protecting system.Suppose that a user A buys by first digital data record and reproducer 1011 and reproduced some numerical datas (typically, music), and he finds oneself to like these data, and plan suggestion user B and buy these data.In this case, user A can be stored in these numerical datas in the medium, and brings the user B with it, or directly these data is sent to user B by the Internet.Because user A needn't worry to describe these numerical datas and resembles what (for example, music title, singer's name), so for two of them, everything goes well with your work carries out for this, and user B has only received the data from user A.Then, user B may also find oneself to like this music, and it is recommended another user C.If based on use the behavior of this wide dispersion numerical data is charged, then the copyright holder can enjoy the interests of bringing thus.Basically, developed this copyright protecting system under the circumstances.
Fig. 4 is the diagrammatic sketch that specifically illustrates the copyright protecting system that is used for above-mentioned this situation.In the figure ear, suppose user A by first digital data record and reproducer 1011 by content server 102 down-load music data (step 1), and to the 103 online payments (step 2) of billed services device.Then, user A sends to music data the user B (step 3) of operation second digital data record and reproducer 1012.User B is that music data is to the 103 online payments of billed services device.After this, user B sends to music data the user C (step 5) of operation the 3rd digital data record and reproducer 1013.User C is that music data is to billed services device 103 online payment (step 6).Here, the user has the right to select for the music data payment music data not to be recommended other people natch.
Equally, this copyright protecting system can be to user's charge in the music data distribution is handled, and this brings wider interests to the copyright holder.In addition, system can leave such as awards such as complimentary tickets and issue music data to encourage the user between them.Detailed content will be described after will staying.
Digital data record and reproducer by user's operation are then described now.Fig. 5 is the block scheme that the structure of first digital data record and reproducer 1011 is shown.Digital data record among Fig. 5 and reproducer comprise that super release data receiving element 401, super release data storage area 402, RMI obtain unit 403, RMI storage area 404, content key extraction unit 405, data sensing element 406.Data compression unit 407, DEU data encryption unit 408, RMI increases unit 409, data access unit 410.Sender ID increases unit 411, buys processing unit 412, content decryption unit 414, playback control unit 415, loudspeaker 416 and user ID storage area 418.
Here notice that loudspeaker 416 can be connected to digital data record and reproducer in the outside.In addition, as below describing, RMI is set obtains unit 403, RMI storage area 404, content key extraction unit 405, data sensing element 406, data compression unit 407, DEU data encryption unit 408 and RMI and increase unit 409, ciphered data etc. is converted to super release data.If do not need this conversion, will omit these elements.Here second with the 3rd digital data record and reproducer 10u and 1013 structures on identical with first digital data record with reproducer 1011, therefore no longer describe.
This digital data record and reproducer are generally realized by PC.Fig. 6 is the diagrammatic sketch that the structure of first digital data record that realized by general computer installation and reproducer 1011 is shown.
Equipment among Fig. 6 comprises the information process unit 2 that can carry out data processing and other parts of control, the program storage unit 3 of the program data that can be stored as the operation information processing unit and need, and the output unit 4 that can show various information and reproduction and outputting music data etc. for the user, can receive user instruction and from the input block 5 of external memory media data, can store general data storage unit 6 such as the data of super release data, can store the data (in the zone that normal operations can't be visited) for user cipher device private data storage unit 7 and can be by the communication unit 8 of the Internet and various server communications.These no parts connect by the synergic system bus.
Here, information process unit 2 is carried out these different pieces of informations processing by program.Program storage in program storage unit 3, and is sent to information process unit 2 as required.Can so dispose program storage unit 3, programme information is stored into such as (comprising hard disk unit or semiconductor memory) recording mediums such as read-only storages or such as CD (being CD, DVD) and semiconductor memory card etc. alternately in the recording medium.
If but the recording medium of using is alternate type, it can with the program exchange of new in addition storage.
General data storage cell 6 is made of and storer that can write readable such as hard disk drive and semiconductor memory etc., and storage does not need the data (such as super release data) to user cipher device.Private data storage unit 7 can be such as storeies such as hard disk or specialized hardwares, or the inner storer that is provided with the storage area of encryption, and will need the data storage of user cipher device in the general operation zone that is beyond one's reach.Communication unit 8 can for example be made of modulator-demodular unit and router, and by the Internet, with content server 102, billed services device 103, or other digital data record is communicated by letter with reproducer.
Here notice that digital data record and reproducer are not limited to PC, can also realize by the so-called STB (top box is set) of recorded announce program.
Describe below as shown in Figure 5 first digital data record and the operation of reproducer 1011.The work difference of this equipment between super release data and clear data.What will describe below is first kind of situation, and promptly user A receives super release data, i.e. first super release data as shown in Figure 2 or the second super release data shown in Figure 3.In Fig. 5, from content server 102, the second or the 3rd digital recording and reproducer 1012 or 1013 (by other user operation), or the first and second super release data are offered super release data receiving element 401 such as external record medium 417 such as CD.Then data storage is arrived super release data storage area 402.The memory location of data is write in the super release data management information that is stored in the secret zone (will be discussed in more detail below).Though can provide the zone of maintaining secrecy separately by other storage area, in this equipment, it is arranged in the super release data storage area 402.
Second kind of situation is described below, and wherein, user A is from receiving the unencrypted music data such as external record medium such as CD 417.This unencrypted music data can be from content server 102 or other device.But, if such situation then almost can't realize the protection to copyright, so do not consider this data here.In addition, do not increase unit 409 and configuration digital data record and reproducer if do not use RMI to obtain unit, RMI storage area 404, content key extraction unit 405, data sensing element 406, data compression unit 407, DEU data encryption unit 408 and RMI, then do not carry out following operation.
In Fig. 5, data sensing element 406 is read the unencryption music data from external record medium 417, and it is corresponding to the content 205 that comprises voice data 204.RMI obtains unit 403 and obtains authorization administration information from content server 102 or external recording medium 417.The authorization administration information that obtains is stored in the RMI storage area 404.
Fig. 7 is a process flow diagram, first digital data record and reproducer 1011 is shown for obtaining the detail operations of authorization administration information.In step S901, RMI obtains unit 403 from obtaining content identification information such as external record medium such as CD 417.Content identification information be for identification content provide such as identification codes such as ISRC or heading messages.
In step 902, RMI obtains unit 403 and determines whether external record medium 417 have the authorization administration information (by the content identification information regulation that obtains) corresponding to content.If have, then program enters step S903, otherwise enters step S904.
In step S903, RMI obtains unit 403 and obtains authorization administration information from external record medium 417.Program enters step S905 then.Notice that the authorization administration information that is recorded on the external record medium 417 is encrypted in predetermined encryption system.Here, authorization administration information can be recorded in such as external record medium such as CD, or block such as SC (secure digital) in the secret zone of the recording medium that waits other type.
In step S904, RMI obtains unit 403 and communicates by letter with content server 102 on (ground of maintaining secrecy), and obtains authorization administration information.Then, program enters step S905.
In step S905, the authorization administration information that obtains is stored in the RMI storage area 404, specifically, store in the predetermined secret zone that is arranged on digital data record and reproducer 1011.Perhaps, in predetermined encryption system, authorization administration information is encrypted, and decryption key only is stored in the secret zone.
In step S906, the relevant information of authorization administration information that RMI acquisition unit 403 will obtain recently is added in the authorization administration information admin table, and this admin table is used for managing the authorization administration information of RMI storage area 404.
Fig. 8 is the diagrammatic sketch that the exemplary mechanism of authorization administration information admin table is shown.The authorization administration information admin table comprises call number 1501, content identification information 1502 among Fig. 8, and authorization administration information stored position information 1503.Call number 1501 is assigned to each authorization administration information in the RMI storage area 401 with ascending sequence.In example shown in Figure 8, RMI storage area 404 has seven different authorization administration informations.
Compress the content of reading by data compression unit 407 in a predefined manner from data sensing element 406.Though needn't compressed content, for for the Internet transmission/reception, littler data size is preferably.For the area size of storage, also be like this.
By the content-encrypt of 408 pairs of compressions of DEU data encryption unit, the key that is used for encrypted content is to be taken out from the authorization administration information that is stored in RMI storage area 404 by content key extracting unit 405.RMI increases unit 409 authorization administration information is added to by in DEU data encryption unit 408 ciphered data.So that produce the first super release data.The first super release data of this generation is stored in the super release data storage area 402, and its memory location is write the super release data management information that is stored in the secret zone.
Fig. 9 illustrates in the diagrammatic sketch of exemplary mechanisms of super release data management information 1605.Super release data management information 1605 among Fig. 9 comprises: call number 1601, data storage location information 1602, and purchase state 1603.Call number 1601 is assigned to each the super release data that is stored in the super release data storage area 402 with ascending sequence.The position of the super release data storage of data storage location information 1602 expressions.In example shown in Figure 9, super release data is stored in seven different files.Whether the super release data of purchase state 1603 expressions is purchased.
If arrive the super release data of super release data storage area 402 is from one in the super release data receiving element 401, and then the purchase state 1603 corresponding to data is " also not buying ".After having finished the book keeping operation processing that below will describe, purchase state 1603 changes over " purchase ".Here, purchase state 1603 can be by predetermined numeral or mark (corresponding to predetermined bit) expression.
If reach the super release data of super release data storage area 402 and be one by data encryption to reading from external record medium 417 by data sensing element 406, and increase that unit 409 is converted to super release data with these data and the data that obtain by RMI, then the purchase state 1603 corresponding to these data is " purchase ".This is because the user has bought external record medium 417.
To describe digital data record and the operation of reproducer 1011 in Fig. 5 below, this operation is used to reproduce this super release data that is stored in wherein, and these data are issued to other user.
With reference to Fig. 5,, extract command unit (not shown) order data addressed location 410 and read suitable super release data from super release data storage area 402 according to the instruction of user's a certain content of reproduction.Data storage cell 410 is followed this instruction then.
But under the situation of finishing book keeping operation processing or preview, content decryption unit 414 is from being taken out content 205 as shown in Figure 2 by the super release data that data access unit 410 extracted and extracted.The reproduction of content that playback control unit 415 controls are extracted is ordered loudspeaker 416 outputting audio datas then.
Describe the operation of this content decryption unit 414 and playback control unit 415 below in detail with reference to Figure 10.Figure 10 is a process flow diagram, is depicted as to reproduce to be stored in the processing that the super release data in the super release data storage area 402 is carried out.
In step S1301, content decryption unit 414 is taken out the content key 202 this authorization administration information 203 that is included in as shown in Figure 2 and the control information 201 of keeping accounts from the super release data of being extracted by data access unit 410.As has been described, specific software is suitable for the authorization administration information key to this decrypts information.
In step S1303, content decryption unit 414 is consulted super release data management information 1605, and checks whether the purchase state 1603 of the super release data that will reproduce is " buying ".If program jumps to step S1305, otherwise, step S1304 entered.
In step S1304, content decryption unit 414 is consulted the book keeping operation control information 201 that comprises in the authorization administration information 203 of deciphering, but and checks whether preview.If of course, then program enters step S1305, otherwise this is the knot card of this processing, and the content of abandoning deciphering.Preview is fine if having several times, then consults number of times in book keeping operation control information 201.Can preview for number of times, can those number of times of preview whenever listen to and once subtract one.
In step S1305, content decryption unit 414 is suitable for the content key 202 that extracts, with the encrypted content deciphering to comprising in the super release data by data storage cell 410 visits and extraction.In addition, the reproduction of content of playback control unit 415 controls to extracting ordered for example outputting music of loudspeaker then.Here,, increase the number of times of listening in the authorization administration information 203 for the number of times of listening to of recorded content, and then to information encryption, and change back the super release data that stores in the super release data storage area 402.Similarly, when the number that allows preview is set up, the number in authorization administration information 203 is reduced, and then this information is encrypted once more, and rotates back into the super release data that is used to store.In addition, if keep accounts, then the corresponding states of buying 1603 is converted to " also not buying " at once after playing for listening to each time.
The situation of content distribution being given other user is described below.With reference to Fig. 5, issue the order of some super release data corresponding to the user, be similar to the situation of reproduction, extract 410 visits of command unit order data addressed location and extract the super release data that is suitable for.It is specific user ID search subscriber ID storage area 418 that sender ID increases unit 411, so that produce the super release data 505 of work post thus.The second super release data 505 that is produced is sent to second digital data record and reproducer 1012.Here, data can send to other digital data record and reproducer safely, or are recorded in the recording medium (such as SD card etc.) that is easy to carry about with one, and pass in other user's hands.
Below, describe structure and operation that sender ID increases unit 411 in detail.Figure 11 illustrates the block scheme that sender ID increases the detailed structure in unit 411.Sender ID among Figure 11 increases unit 411 and comprises that user ID obtains unit 501, user ID ciphering unit 502, user ID increases unit 503 and management information obtains unit 504.
User ID obtains unit 501 from the zone of maintaining secrecy, and promptly user ID storage area 418 obtains specific user ID.Specific user ID is the identification code that offers each user or digital data record and reproducer uniquely.Here notice that specific user ID can be stored in the user ID storage area 418 in advance, or can provide server or billed services device 103 to provide by ID by preset program.
Management information obtains unit 504 and reads the super release data management information 1605 that is stored in the secret zone by data access unit 410.After this, the purchase state of reading in the super release data management information 1,605 1603 is input to user ID ciphering unit 502.
Then, user ID ciphering unit 502 will be write user ID and obtain the user ID that unit 501 obtains by the purchase state 1603 that management information obtains to import unit 504.Typically, user ID is made of ID and purchase state.After this, user ID ciphering unit 502 is encrypted user ID under predetermined encryption system.
User ID increase unit 503 will by user ID ciphering unit 502 encrypt user ID be added to by 410 visits of data access unit and the super release data extracted, produce the second super release data 505 thus.
Being not to be provided with under the situation of the first super release data of user ID 301 by data access unit 410 visit and the super release data extracted, can only provide the sender ID.On the other hand, the second super release data for being provided with user ID can add sender ID in every way.
For example, can before sender ID adds, remove the user ID that has been provided with, or follow according to the number of times order by sender ID.Under the situation of back, promptly sender ID is a plural number, and its quantity can be restricted to several at last.Here, user ID is assumed to be latter two, specifically, the sender ID back of this equipment is another sender ID, and this sender ID belongs to that equipment of issuing these data.
In this manner, no matter (promptly by 410 visits of data access unit and the super release data of extracting which kind of type, the first and second super release data), user ID increases unit 503 and adds the user ID of encryption in its stem, thus user ID be at the most latter two.Produce the second super release data 505 thus.
The purchase that describes below in digital data record and the reproducer 1011 is handled.As mentioned above, the super release data that is stored in the super release data storage area 402 comprises the also data for buying.Therefore, according to user's purchase instruction, buy command unit (not shown) order purchase processing unit 412 and read super release data storage area 402 for the super release data that is suitable for.Then, buy processing unit 412 and follow order, handle by book keeping operation then.
Figure 12 is the block scheme that the detailed structure of buying processing unit 412 is shown.Purchase processing unit 412 among Figure 12 comprises RMI extraction unit 601, book keeping operation control information extraction unit 602, sender ID extraction unit 603, book keeping operation process information generating unit 604, book keeping operation process information transmitting element 605, transmitter ID transmitting element 606, normal termination receiving element 607 and super release data management information rewriting unit 608.
RMI extraction unit 601 extracts authorization administration information from reading super release data 610.Then, book keeping operation control information extraction unit 602 extracts the book keeping operation control information from the authorization administration information that is extracted by RMI extraction unit 601.If the super release data of reading has added Any user ID, then sender ID extraction unit 603 extracts user ID, and command accounting process information generating unit 604 adds the user ID of extracting then.Book keeping operation process information generating unit 604 will add the book keeping operation control information of extracting by the user ID that sender ID extraction unit 603 extracts, so that produce book keeping operation process information 611.Similarly, the book keeping operation process information transmitting element 605 book keeping operation process information 611 that will so produce sends to billed services device 103.
Figure 13 is the diagrammatic sketch that the exemplary configurations of book keeping operation process information 611 is shown.Book keeping operation process information 611 among Figure 13 comprises the book keeping operation control information 702 of being extracted by book keeping operation control information extraction unit 602, and the user ID of being extracted by sender ID extraction unit 603 701.Here, when the super release data of reading did not add user ID, book keeping operation process information 611 only comprised book keeping operation control information 702.The user ID of being extracted by sender ID extraction unit 603 701 can not only comprise and belongs to the sender ID that data is issued to the user of equipment, can also be included in another relevant in the data distribution of front user sender ID.
Send this book keeping operation process information 611 as shown in figure 13 at book keeping operation process information transmitting element 605) simultaneously or when just having finished, sender ID transmitting element 606 sends to billed services device 103 with sender ID612 (it is the specific user ID that obtains from the zone of maintaining secrecy, and is used to discern the sender).Typically, subsequently this information is sent to one group of data.
Normal termination receiving element 607 receives book keeping operation processing normal termination from billed services device 103 and notifies 613, and this notice informs that normally having finished book keeping operation handles.Handle normal termination and notify 613 in case receiving book keeping operation, the purchase state 1603 that super release data management information rewriting unit 608 will be stored in the super release data management information 1605 in the super release data storage area 402 does not change over " buying " from " also buying ".
Below by the operation that is used to buy this super release data with reference to flow chart description shown in Figure 14.In step S1201 as shown in figure 14, RMI extraction unit 601 extracts authorization administration information from the super release data 610 of reading.
In step S1202, the authorization administration information deciphering of the above-mentioned authorization administration information key of book keeping operation control information extraction unit 602 usefulness to extracting.Carry out this deciphering by above-mentioned special software.In step S1203, book keeping operation control information extraction unit 602 extracts the book keeping operation control information from the authorization administration information of deciphering.With the book keeping operation control information of extracting is with an information that comprises in the book keeping operation process information 611.
In step S1204, sender ID extraction unit 603 determines whether the super release data of reading is the second super release data.If then program enters step S1205, otherwise jump to step S1207.
In step S1205, sender ID extraction unit 603 extracts user ID from the second super release data.In step S1206, sender ID extraction unit 603 adds the book keeping operation control information with the user ID of extracting then, so that produce book keeping operation process information as shown in figure 13.
In step S1207, book keeping operation process information transmitting element 605 process information 611 of will keeping accounts sends to billed services device 103.Meanwhile, or subsequently, sender ID transmitting element 606 obtains sender ID from the zone of maintaining secrecy, and then sender ID is sent to billed services device 103.
In step S1208, passing through billed services device 103 through after handling required time, normal termination receiving element 607 determines whether that having sent book keeping operation processing normal termination from billed services device 103 notifies 613.If then program enters step S 1209, otherwise turn back to step S 1207.Here, if the processing no matter among the step S1207 has repeated how many times, all send book keeping operation and handle normal termination and notify 613, billed services device 103 all drops.Correspondingly, the processing (not shown) of being scheduled to is with the control mistake.
In step S1209, super release data management information rewriting unit 608 is read super release data management information 1605 from super release data storage area 402, purchase state 1603 is not wherein changed into " oneself buys " from " also buying ", and then this information is recorded super release data storage area 402.
In the foregoing description, suppose the book keeping operation process information to be sent to online the bloated server of note.But, can store the book keeping operation process information into digital data record and reproducer, send to the billed services device any in suitable then.
The structure and the operation of the billed services device 103 of the processing of keeping accounts then, are described.Figure 15 is the diagrammatic sketch that the structure of the book keeping operation processing unit 801 that is arranged in the billed services device 103 is shown.Book keeping operation processing unit 801 shown in Figure 15 comprises book keeping operation process information receiving element 802, sender's granted unit 803, book keeping operation processing unit 804, normal termination circular unit 805, sender ID extraction unit 806, sender ID decryption unit 807 and bonus processing unit 808.
Book keeping operation process information receiving element 802 receives from buying the book keeping operation process information that processing unit 412 sends.The process information of keeping accounts then arrives book keeping operation processing unit 804 and sender ID extraction unit 806.The user ID 612 that sender's granted unit 803 receives from the purchase processing unit 412 of first digital data record and reproducer 1011 is assigned to the sender then.
According to the book keeping operation control information that comprises in the book keeping operation process information that receives, book keeping operation processing unit 804 is according to the processing of keeping accounts of the user by 803 appointments of sender's granted unit.Normal termination notification unit 805 will be kept accounts then and be handled normal termination and notify the 613 purchase processing units 412 that send in first digital data record and the reproducer 1011.
If for book keeping operation process information 611 provides the user ID that is assigned to the sender, sender ID extraction unit 806 extracts sender ID.As mentioned above, the sender ID of extraction can be current also can be the sender ID of front.807 pairs of sender ID deciphering of extracting of sender ID decryption unit by sender ID extraction unit 806.Bonus processing unit 808 is handled by bonus according to the user of the user ID appointment of deciphering.Describe in detail below.
The detail operations of book keeping operation processing unit 801 is described below with reference to Figure 16.Figure 16 is a process flow diagram, and the processing to each the no part in the book keeping operation processing unit 801 is shown.
In step S1401, book keeping operation process information receiving element 802 receives book keeping operation process information 611 from buying processing unit 412, and sender's granted unit 803 receives sender ID from buying processing unit 412.
In step S1402, book keeping operation processing unit 804 is for the user who by sender's granted unit 803 is the sender ID appointment that the receives processing of keeping accounts.This processing is to carry out according to the book keeping operation control information that is included in by in the suffered book keeping operation process information of book keeping operation process information receiving element 802.Here, as has been described, the book keeping operation control information for example comprises, if the bill that book keeping operation needs.
In step S1403, the sender ID extraction unit 806 book keeping operation process information that book keeping operation process information receiving element 802 receives that determines whether to serve as reasons provides Any user ID.If then program enters step S1404, otherwise jump to step S1406.
In step S 1404, sender ID decryption unit 807 is deciphered user ID in a predefined manner.Here, user ID can be the sender ID of current or front.
In step S1405, bonus processing unit 808 carries out bonus for the user by the user ID appointment through deciphering to be handled.Thus, the user will obtain giving a discount or complimentary ticket, and this is effective for book keeping operation next time.Here, as mentioned above, the user who gives this bonus can be current also can be the sender of front.If this is the case, bonus processing unit 808 compare sender's of the front to(for) current sender increases the face amount of discounting rate or complimentary ticket.This is because the sender is the relevant people of directly pre-data distribution, and the sender of front is indirect.
For the user ID of deciphering provides above-mentioned accounting information.Correspondingly, the user comparison of having bought music data of 808 pairs of bonus processing units also not have the user of purchase to increase discounting rate or complimentary ticket face amount.
As from as can be known above-mentioned, in this numerical data copyright protecting system, the contribution that user's pay by putting it to one's account and he do distribution has determined discounting rate or bonus face amount.In this manner, the user may be ready purchase data or put in the distribution of data, to increase his/her prize value.This user's participation has been arranged, and this numerical data copyright protecting system can make the copyright holder be benefited to a greater degree, protects their copyright simultaneously.
In foregoing, user's bonus exemplarily is to give a discount or complimentary ticket, but is not limited thereto.Bonus can be changed into the point that can change along with commodity, commodity, or special service, any can, as long as bonus has attracted the user well.
(second embodiment)
Digital data copyright protection system according to a second embodiment of the present invention is the same with described in first embodiment almost.Specifically, identical among the content server 102 here and billed services device 103 and first embodiment.In addition, the digital data record here is also almost identical with the reproducer structure.Return this, in a second embodiment, only describe the place that is different from first embodiment.Any identical parts all use identical parameter, no longer describe here.
Figure 17 is a block scheme, and the digital data record of second embodiment and the structure of reproducer are shown.In Figure 17, the super release data receiving element 401 of digital data record and reproducer 1701 treasure-houses.Super release data storage area 402, RMI obtain unit 403, RMI storage area 404, content key extraction unit 405, data sensing element 406, data compression unit 407, DEU data encryption unit 408.RMI increases unit 409, data access unit 410, sender ID increase unit 411, buys processing unit 412, content decryption unit 414, playback control unit 415, loudspeaker 416, user ID storage area 418, data increase unit 1702, additional information storage unit 1703, display 1704.
As from as can be known above-mentioned, different with first digital data record of first embodiment and reproducer 1011 is that being provided with data in addition increases unit 1702, additional information storage unit 1703, and display 1704.Data are described below increases the operation of unit 1702.
Here, show customer-furnished view data in the schedule time of reproducing content.Reproduction control information is used for the reproduction of control content.For example, if a plurality of, then reproduction control information control control sequence and time, come reproducing audio data, or the control time shows customer-furnished view data.
DEU data encryption unit 408 makes has the voice data encryption that is increased the view data of unit 1702 addings by data.Certainly, can only encrypt voice data.Now and below, digital data record and reproducer 1701 are operated with first digital data record that is similar to first embodiment and the mode of reproducer 1011, no longer describe.
Here notice that in display 1704 as shown in figure 17, loudspeaker 416 is used to reproduce content, and display 1704 can also be used for display image.As describing with reference to Fig. 6, when realizing equipment by ordinary individual's computer, display can be that CRT or other equipment are to show various information.Thus, when content comprises view data, image will be presented on the display 1704 that is subjected to the PC welcome.
As described previously, according to this numerical data copyright protecting system, no longer need to encrypt CD and come to get suitable usage charges, and protect its copyright.In addition, by the reproduction control information of customer-furnished image and audio frequency, more interesting with the audio content of super release data distribution.
(the 3rd embodiment)
According to the 3rd embodiment,, the content distribution form of so-called SDAF (secure digital audio format) is described below as specific examples in the super release data described in first to second embodiment.With reference to Figure 18 to 39, the details of relevant SDAF is at first described, describe how to use SDAF with reference to Figure 18 to 39 then.
Content distribution form (SDAF) according to present embodiment is used to describe content of multimedia, comprises audio frequency.Image, video, text and file data.Here being called the SDAF title with the described content of multimedia of SDAF.Here each the expression data that comprises the SDAF title are called content element (below be abbreviated as CEL).Assign a CEL identifier exclusive in the SDAF title (below be abbreviated as CELID) for each CEL.
This SDAF title is issued in the unit that the SDAF title is divided into so-called SDAF bag.Assign a Packet Identifier exclusive in whole publishing system for each SDAF bag.Figure 18 is the figure that an example of SDAF bag is shown.As shown in figure 18,
SDAF title 2000 is made of a plurality of SDAF bags.Each bag 2001 is made of stem 2011, pilot data 2012, a plurality of CEL 2013 and quotation (offer) 2014.
Figure 19 a is the figure that three types SDAF bag is shown to 19c.Be similar to Figure 18, the complete packet 2001 shown in Figure 19 c comprises stem 2011, pilot data 2012, a plurality of CEL 2013 and offers 2014.Quotation bag 2002 shown in Figure 19 a comprises stem 2011, pilot data 2012 and offers 2014, but how not comprise CEL 2013.CEL bag 2003 shown in Figure 19 b comprises stem 2011 and a plurality of CEL 2013.Because pilot data 2012 is that broadcast SDAF title is required, thus complete bag 2001 and quotation bag 2002 can only be play, and can not ce play L bag 2003.
The CEL bag is used for cutting apart the SDAF title according to distribution channel.For example, when using the CD-ROM distribution, the SDAF title is recorded among the CD-ROM as a complete bag.On the other hand, when issuing, the SDAF title is divided into a complete bag and a plurality of CEL wraps and issue by the Internet.For example, the SDAF title being divided into a complete bag that comprises audio frequency CEL and a plurality of CEL that comprises video CEL (consulting) from complete bag wraps and issues.
In addition, as shown in figure 20, can be divided into a plurality of SDAF bags to the SDAF title by magnetic track (track).In bag shown in Figure 20 is cut apart, the SDAF title 2020 of the voice data that comprises five magnetic tracks is divided into three bags 2021 to 2023.First to H bag 2021 to 2023 has bag title Slnglel, SlngleZ and album (collection of records) respectively.First and Th bag 2021 and 2022 comprise that all the audio frequency CEL and being used to of a magnetic track controls the pilot data of the broadcast of this CEL.The 3rd bag 2023 comprises one corresponding to the audio frequency CEL of three magnetic tracks and be used for the pilot data that controlling packet is contained in first to three guarantees 2021 to 2023 all audio frequency CEL broadcast.Like this, by the SDAF title being divided into a plurality of SDAF bags, can make the size decreases of each data, and be easy to handle each data.
Below be described according to the order of the stem, quotation, pilot data and the CEL that constitute the SDAF bag.
Figure 22 is the figure that the structure of stem 2031 is shown.In stem 2031, store the data of the following stated successively, stem is of a size of hexadecimal BCH.Notice that the C Plus Plus shown in can Figure 23 and 24 is described the structure of stem 2031.Figure 23 and 24 illustrates the continuous source code that is divided into two, before cutting apart, after source code 2062 shown in Figure 24 is connected on source code shown in Figure 23 2061.
At the section start of stem 2031, having stored the indication file is the magic number 2041 (4 bytes) of SDAF form.The value of magic number 2041 is character string " SDAF ".Then, stored the version number 2042 (4 bytes) of SDAF.Then, bag ID 2043 (16 bytes) and bag size 2044 (4 bytes) have been stored.Then, stored the number 2047 of the CEL in pilot data positional information 2045 (SDAFLOCAT10N.NAV among Figure 23), quotation positional information 2046 (SDAFLOCATIONOFFER among Figure 23) and the bag.Then, store the CEL information 2048 (SDAF.LOCAT10N.CE among Figure 24) of each CEL.At last, stored the CEL attribute list 2049 of the attribute of indicating each CEL.
The position and the size of pilot data positional information 2045 indication pilot data 2032.The position and the size of the 2046 indication quotations 2034 of quotation positional information.These two information all are made of side-play amount (offset) (4 bytes) and each size (4 bytes) thereof with SDAF bag section start.
CEL information 2048 is by CELID20S1 (16 bytes), CEL type 2052 (2 bytes).CEL encryption type 2053 (2 bytes), CEL Data Position information 2054 and CEL attribute list positional information 2055 constitute.CLE ID20S1 is a content element identifiers exclusive in the SDAF title.CEL type 2052 is got any value in audio frequency, image, video, text and the file.CEL encryption type 2053 indication is used for algorithm that CEL is encrypted.CEL Data Position information 2054 and CEL attribute list positional information 2055 all are made of side-play amount (4 bytes) and each size (4 bytes) thereof with SDAF bag section start.If side-play amount or be of a size of 0 then means not have data.
CEL attribute list 2049 is to the specified attribute inventory of each CEL type.Audio frequency CEL attribute list (SDAFATTRWUDIO among Figure 24) comprises the CODEq coding decoder at least), measure in the number of number, sample frequency and the voice-grade channel of the position of changing.Image CEL attribute list (SDAFHTTRGRAPHIC among Figure 24) comprises height and the width and the encryption type of image at least.Video CEL attribute list comprises height and the width and the encryption type of video at least.The text attribute table comprises the encryption type of text at least, moves (muSlc shift) JID (Japanese Industrial Standards) such as Unicode (Unified coding standard) or music.File CEL attribute list comprises that at least the MIME multipurpose internet mail extends) type.
CEL attribute list 2049 is not defined as the table of regular length, but defines to the variable length marks structure shown in the 25c with Figure 25 a.If the usage flag structure, then shown in Figure 25 a, storage mark length and Tag ID before data.For example, visual CEL attribute list is made of attribute tags 2063 and encryption type mark 2064.The usage flag structure is come the no element of named list, thereby can be added to a new table element this data layout or can only change data layout by increasing by a mark.Specify the CEL attribute list by using the mark structure that very likely extends.
Then, quotation 2014 is described.As mentioned above, quotation comprises that a plurality of keys are to the purchase rule right with each key.Each key is to being made of the decruption key and the CEL.ID that are used for CEL is decrypted.Figure 26 is the figure that the corresponding relation between key pair and the CEL is shown.As shown in figure 26, key is made of decruption key 2073 and CEL.ID2074 2072, and each key relates to each CEL2071 to 2072.Quotation comprises that not only the key that is included in the CEL in the SDAF bag is right, comprises that also all keys of the CEL in the SDAF bag that is included in same SDAF title are right.In other words, when a SDAF title being divided into a plurality of SDAF bag, an independent SDAF comprises a quotation, and this quotation comprises that all keys that are included in the CEL in this SDAF title are right.
Use is used to describe the language (being called the managing entitlement language) of the right service condition of key and describes the purchase rule.The right service condition of key comprises to be bought date, life cycle and whether has bought specific CEL or SDAF title.Buy rule by using these service conditions to specify, thereby can sell same CEL with different prices according to these conditions.
Then, pilot data 2012 is described.Pilot data is created by creator of content, thereby the user can use CEL most effectively, limits the logical organization of SDAF title
In SDAF, use XML (extensible Markup Language (and SGML " (it is the mark descriptive language of text formatting) describe pilot data.When coming the data of description structure, use the mark structure of text formatting with XML.Therefore, to compare with binary data be redundant to the data of describing with * ML.But adopting XML is because it has splendid expandability.
In order from pilot data, to consult CEL, use the CEL steady arm.The CEL steady arm be adopt '? ' (question mark) as the bag ID of separator and being connected in series of CEL.ID.Yet for the CEL that is included in the SDAF bag that comprises pilot data, bag ID and separator are omitted, and CEL ID becomes the CEL steady arm.The CEL steady arm can be specified CEL, and irrelevant with the physical address of CEL.
Figure 28 illustrates the figure that how to use the CEL steady arm to consult CEL from pilot data.In Figure 28, pilot data 2081 and expression data 2082 are shown example of work.Expression data 2082 comprise with the audio frequency CEL 2083 of MPEGZ-AAC coding and the visual CEL 2084 that encodes with JPE6.The bag ID of audio frequency CEL 2083 and CEL-ID are 1, and the bag ID of visual CEL 2084 and CEL_ID are respectively 1 and 2.In the case, be included in CEL steady arm in the pilot data 2081 " 1? 1 " indicating its bag DD is the audio frequency cEL 2083 of " 1 " for " 1 " and cEL.[D.The cEL steady arm " 1? 2 " indicating its bag ID is the visual CEL 2084 of " 2 " for " 1 " and CEL.ID.From then on example after having created the SDAF title, has only variation among the bag ID of CEL steady arm just to cause the variation of the structure of SDAF bag as can be known.Therefore, can constitute the SDAF title single bag or the SDAF title is divided into a plurality of SDAF bags.
Figure 29 and 30 is the figure that illustrate based on the structure of the pilot data of following manifestation mode.Each rectangle represents one of pilot data not have plain.The arrow indicator element A that moves no plain B from elements A to comprises as the element B that derives from (derivation) element.Set each of each arrow section start indicates that indication is as follows: " indicate this element to comprise 0 or the more nothing element that derives from; Ten these no elements of indication comprise 1 or more daughter element:? indicate this no element to comprise 0 or 1 daughter element.Do not comprise a project P without any arrow if there is plain A, then mean elements A project P as an attribute.The sports representative CEL steady arm that underscore is arranged.The character string that the PCDATA representative is made of the character that is included in the predetermined character set.This representation specified with the LE of factory (title) element be the hierarchy of root.
TITLE element 2101 is described shipment (shipping) information of SDAF title.This element has three attribute: UPC, VERS10N (version) and LANGUAGE (language).UPC attribute description UPC (Universial Product Code), it is the international standard of product code.The version number of VERS1DN attribute description SDAF navigational structure.The LANGUAGE attribute description is according to the language form of ID0639.Its default value is " en " of indication English.
The METADATA no datat) information such as kind of element 2102 description such as PLAYLIST (playing list) or TRACK (magnetic track) elements.The METADATA element has a TYPE (type) attribute.The type of TYPE attribute description METADATA element.
ASSOC element 2103 is described being included in the reference information of the CEL in other SDAF title.This element has the REF attribute.REF attribute description CEL steady arm.
PLAYLIST does not have plain 2105 and describes playing list, and it is an elementary cell of SDAF title.Playing list is corresponding to the collection of records in the conventional package media, and is included in all SDAF titles.The PLAYLIDT element can comprise MENU (menu) element, and it is a menu of playing list.PLAYLIST unit have five attributes: the NAME title), ARTIST (artist), PRODUCTID product IDs), THUBMNAILID thumbnail ID) and ONSTART (beginning).The title of NAME attribute description playing list.The PRODUCTID attribute description is corresponding to the information of the catalog code among the CD.The CELD steady arm of typical visual CEL in the THUMBNAILID attribute description playing list.The ONSTART attribute description is play the operation of playing list.If the ONSTART attribute is " MENU ", then player stops to play the inventory menu that displays the play simultaneously.If " TRACK ", then player begins to play first TRACK element that is included in the PLAYLIST element.All PLAYLIST do not have element and have at least one TRACK and do not have plain 2106.
TRACK element 2106 is described the magnetic track that comprises an audio frequency CEL.The TRACK element can comprise magnetic track menu, slideshow, text, file and other.
T RAC K element has seven attribute: ID.NAME, ARTID, ISRC, AUD101D (audio frequency ID), TSM; D and TRUMBNAILID.Exclusive identification code in the ID attribute description SDAF title.The title of NAME attribute description TRACK element.ARTID the artistical name of attribute description.IDRC attribute description IDRC (international standard record code).AU D101D attribute description relates to the CEL steady arm of the audio frequency CEL of TRACK element.The TSMID attribute description is corresponding to the CEL steady arm of the time search mapping of audio frequency CEL.The time search mapping is described afterwards.The CEL steady arm of typical visual CEL in the TRUMBNAILID attribute description TRACK element.
The MARKER identifier) element 2107 is described the identifier of the beginning that is used for finding the TRACK element.This element has two attribute: TIME (time) and NAME.The TIME attribute is described the position of this identifier with millisecond.
The title of this identifier of NAM E attribute description.
SL; DESHOW (slideshow) element 2110 is described the slideshow that shows lantern slide or menu with predetermined demonstration at interval.This yuan have four attribute: ID, NAME, TYPE and INTERVAL (at interval).Exclusive identifier in the ID attribute description SDAF title.The title of NAME attribute description slideshow.Information category in the TYPE attribute description magnetic track is such as head or run-out captions, the lyrics, staff note, biography, set of images or sales promotion etc.The demonstration of INTERVAL attribute description lantern slide or menu at interval.
TEXT (text) element 2113 is described text message.With the text data form text message is described.Perhaps, but the part of referenced text CEL is come specify text information.The TEXT element has the attribute with SYNCTEXT element same type.
VIDEO (video) element 2114 is described any existing video CEL.This yuan have three classes: ID.VIDE01D video ID) and TYPE.Exclusive identifier in the ID attribute description SDAF title.The CEL steady arm of VIDE01D attribute description video CEL.Information category in the TYPE attribute description magnetic track is such as head or run-out captions, the lyrics, staff note, biography, set of images or sales promotion etc.
FILE (file) element 2115 is described any existing file CEL.This yuan have three attribute: ID, FILEID file ID) and TYPE.Exclusive identifier in the ID attribute description SDAF title.The CEL steady arm of FILEID attribute description file CEL.Information category in the fourth YPE attribute description magnetic track is such as head or run-out captions, the lyrics, staff note, biography, set of images or sales promotion etc.
The SLIDE lantern slide) element 2116 is described a lantern slide.This yuan have three type: ID, NAME and BACKGROUNDID (background ID).Exclusive identifier in the ID attribute description SDAF title.The title of NAME attribute description lantern slide.The CEL steady arm of visual CEL on the BACKGROUNDID attribute description lantern slide screen.
MENU attribute 2117 is described a menu.This menu has the button on one or more screens.MENU does not have and have four attribute: ID, NAME, BACKGROUNDID and SELECTID (SELECTID).Exclusive identifier in the ID attribute description SDAF title.The title of NAME attribute description menu.The CEL steady arm of the visual CEL that the BACKGROUNDID attribute description shows on menu screen.The SELECTID attribute description is used to specify the call number of the button that will set in selection mode.
Button element 2118 is described button on the screen that is arranged on the menu screen.As daughter element, button does not have element and comprises the one or more pairs of of TEXT button (text button) and COMMAND (order) element or GRAPHIC button (graphic button) and COMMAND element formation.Button does not have and have seven attributes: the INDEX index), TAB loudspeaker table symbol), on the UP), DOW then down), the RIGHT right side), a LEFv left side) and AUTOACT10N.INDEX attribute description MENU does not have call number exclusive in the element.The TAB attribute description is the set sequence number of each button on the menu successively circularly.Lay respectively in UP, DOWN, LEFT and the current button of RIDHT attribute description upwards, the call number of choosing the destination button downwards, left and to the right.The AUTOACTION attribute description indicates whether automatically state to be changed to from selection the sign (fIDg) of operation.
TEXT button element 2119 has been described by button on the screen of text representation.This no element has 11 attribute: X, Y, WIDTH (width), HEGHT (highly), FORNTS1ZE, NORMALCOLOR (standard colors), SELECTCOLOR (selection look), ACT1ONCOLOR (execution look).PLAYNINGCOLOR (broadcast look), TEXTID (text ID) and REFID (benchmark ID).X, Y, WIDTH and HEIDHT attribute use coordinate system to describe the display position of button separately, and wherein this coordinate system is taken as initial point with the upper left corner of menu.FONTS 1ZE does not have sketch and states relevant font size.NORMALCOLOR, SELECTCOLOR, ACT10NCOLOR and PLAYINGCOLOR attribute respectively with rgb format described when button state serve as normal, select, work and display color when playing.The TEXTID attribute description CEL steady arm of an external text CEL.The REFID attribute description by the identification number of TEXTREF element among the TEXTCEL of TEXTID appointment.
GRAPH only button element 2120 has described the button on the screen, and this button indication is a figure.This element has 8 attribute: X, Y, WIDTH, HEIGHT, NORMALID (standard I D), SELECTID (SELECTID), ACT10NID (carrying out ID), and PLAYINGID (playing ID).X, Y, WIDTH and HEGHT attribute use coordinate system to describe the display position of button separately, and wherein coordinate system is got the menu upper left corner as initial point.NORMALID, SELECTID, ACT10NID and each self-described of PLAYINGID attribute when button state be respectively normal, select, the CEL steady arm of work and the image C EL that shows when playing.
COMMAND (order) element 2121 has been described the navigation operation for the moment by the button on the sub-screen as the user.This element has two attribute: TYPE (type) and TARGET (target).The TYPE attribute description SHOW (projection), FUNCT10N (function), GOTO (turning to), NEXT (next one), and any one SHOW order in PREVIDUS (preview) order is used for showing the element by the appointment of TARGET () attribute.The FUNCTION order is used to carry out the element by the appointment of TARGET attribute.When display menu, use this order.* O fourth O order is used for moving to element at the same level from the element of present demonstration.
N EXT order is used for moving to next element at the same level from the element of current demonstration.The PREVIDUS element is used for moving to from the element of current demonstration the element at the same level of front.The TARGET attribute description by the parameter of the order of TYPE attribute appointment.If specified the SHOW order, the identification number of the TARGET attribute description element that will show then.If specified the FUNCTION order, the identification number of the element that will carry out of TARGET attribute description then.If specified the GOTO order, then the TARGET attribute description peer of element of current demonstration do not have plain identification number.
TEXTRET does not have sketch and states the text kind of information, is used for consulting a text data part that is stored in TEXTCEL from pilot data.The text data that comprises in the TEXTREF element is consulted from pilot data by specifying TEXTREF not have plain identification number.The TEXTREF attribute has the ID attribute.Exclusive identification number in the ID attribute description SDAF title.
Below, CEL2013 is described.CEL has five types: audio frequency, image, video, text and file.In SDAF, every type CEL data layout and parameter have been specified.
The data that are included among the audio frequency CEL are to comply with the voice data limit complicacy file of MPEGZ-AAC (advanced audio decoding) coding].Note, in ID0/IDC13818-7, specify general sign indicating number one the 7th part of MPEGZ-AAC:1997 (E) infotech one lantern slide picture and related audio information, advanced audio sign indicating number (AAC).Suppose that by the MPEGZ-ACC bitstream encoded be ADTS (audio data transport stream) form.In addition, the parameter of describing among the ID0/IDC13818-7 is defined as the situation shown in figure draws.In these parameters, the parameter beyond samPlingfrequencyindex and the channelconflguratlon is owing to obtain limiting to the selection by the LC.profile of IDolEC13818-7 appointment.In addition, mean bit rate is 64 or 128kbp.
The data that comprise among the image C EL are according to JPEG, MPEG-1 frame or PNG (portable network figure) image encoded data.Figure 32,33 and 34 is respectively the table that the specification of JPEG, MPEG-I frame and PNG is shown.The specification that is applied to the cryptographic calculation rule of image C EL is limited to shown in these figure.
The data that comprise among the video CEL are the video datas according to the MPEGZ coding.Figure 35 is the table that the specification of MPEGZ is shown.The regulation that is applied to the cryptographic calculation rule of video CEL is limited to shown in Figure 35.
The data that comprise among the text CEL are PLAIN text or the XML texts among the SDAF.Encryption type is that solid size or music move JS.
As the example of file CEL, the time search mapping CEL that comprises as the time search mapping of data is described now.The time search mapping is the table that is made of the audio frame address.Figure 36 is the diagrammatic sketch that the structure of time search mapping is shown.As shown in figure 36, time search mapping 2090 is made of stem 2091 and a plurality of project 2092.Figure 37,38a and 38b are table and the diagrammatic sketch that information illustrates stem 2091.Shown in Figure 37,38a and 38b, stem 2091 comprises the playing duration time between the project, describes with millisecond and project sum.Figure 39 is the table that is shown specifically each project.As shown in figure 39, each project comprises the address of audio frame at its inlet point.First project represents to be included in the starting position of the audio frame among the audio frequency CEL.
Note, in the present embodiment, MPEGZ-AAC is used for the music data that compressed package is contained in audio frequency CEL.Perhaps, can use MP3 (MPEGI audio player 3), D0lbyAC3, or DTS (digital theatre system).
Below, with reference to Figure 40 to 45, describe and how to use SDAF.As mentioned above, SDAF is used to describe content of multimedia, and is mainly used in the form of the distribution of music data.SDAF can be applied to various types of recording mediums, be typically hard disk, such as CDs such as DVD-RAM with such as semiconductor memories such as storage cards.
Except the distribution of music data, SDAF can be used in combination with existing music data.For example, will describe below, SDAF can be used with the music data that meets DVD one audio standard.Similarly, SDAF can be applied to other recording medium, such as DVD one video, CD, video one CD and photo CD etc.
The music data that meets DVD one audio standard comprises LPCM (linear impulsive coded modulation) audio content and NPEG-; The two field picture content.The player display menu screen that meets DVD one audio standard is used for user's interactive operation.In DVD one audio standard, this menu screen is by the background image that preferentially is added to of the maximal value with four look video sub-image, is used for showing, and at video a plurality of rectangular areas is set in image and shows.This rectangular area is called button, and each button is assigned as an order.But the quantity of Show Color and the shape of button are limited, and content originator can't freely design menu screen thus.
Can by in advance with the data recording of the menu screen described among the SDAF in traditional DVD one audio disc, and when playing, use these data and the display menu screen.More particularly, DVD one audio disc has write down content of multimedia and the CEL steering gear of describing among the SDAF, is used for consulting original DVD one audio content from SDAF.Below, DVD one audio disc that records this data on it is called DVD one audio disc of extension, and the player that will be used to play DVD one audio disc of extension is called SDAF one and meets DVD one audio player.
Figure 40 is the diagrammatic sketch that illustrates corresponding to the example of the CEL steering gear of single DVD one audio disc.The CEL steering gear of each content that comprises in original DVD one audio disc of each line display.The CEL steering gear comprises CELID 2201, filename 2202, start address 2203 and end address 2204.CEL.ID2201 is a content designator exclusive in the disc.Filename 2202 is the titles that comprise the file of each content.Start and end address 2203 and 2204 is respectively the starting position of each content in the expression file and the offset value of end position.CEL steering gear record is called the DVDA of extension hereof.The MAP steering gear is recorded in the file of DVDA.MAP by name, for example in the SDAF catalogue in the ROM zone of DVD one audio disc that is arranged on expansion.
Can use the 80AF pilot data to describe all various Play Control functions, play and by the menu function of DVD one audio standard definition such as voice playing sequential control, lantern slide display image.For example, the MPEG-I frame background image that can preferentially be added to by the JPEG button image that will have any amount color is used for showing, and makes each button area and an order association realize menu function.
When the Play Control information translation that is comprised in DVD one audio disc is the SDAF pilot data, by using the CEL steering gear, be CEL.ID with the information translation of expression content.Menu screen is converted to the JPEG button image.The image setting that obtains is in position so, thereby by the background image that preferentially is added to.The pilot data and the button image that obtain in the manner described above are stored in the single SDAF bag, and are recorded in the file of SDAF.SDP by name, for example, the SDAF catalogue in the ROM zone of DVD one audio disc that is arranged at extension.The method of extending DVD one audio disc of playing will be described below.
To describe the SDAF player below, be used to play the content of multimedia of describing by SDAF.The SDAF player is play the music data of distribution in the following manner.At first, player searches bag ID and navigation information, collection needs the CEL.ID of the CEL of broadcast.Player uses several groups of bag ID that collect and CEL.ID search purchase database, to determine whether all purchased mistake of each CEL.If the CE that discovery is not also bought, the then quotation of player analysis of encoding, and by the predetermined price of existing electronic distribution system's payment.After the purchase, will be stored in key in the quotation to storing in the purchase database.If determine to find to need the SDAF that plays to wrap in player, player should wrap ID and send to data distribution equipment.Data distribution equipment wraps to SDAF of player distribution by the bag ID that receives.After having bought all CEL that need play, player uses the key that is stored in the purchase database to CE is deciphered so that play.At this moment, player is a Play Control explanation pilot data.
The SDAF title is divided into one or more SDAF bags, and is issued to player.Figure 41 a illustrates the figure that how to issue the SDAF bag to 41c.In the distributing method shown in Figure 41 a, bag 2301 only comprises audio content, only comprises image or video and graphic content and wrap 2302.In addition, consult the audio content that is included in 2301 from wrapping 2302.Thus, only bought wrap 2301 user can only the audio plays content.Except wrap also bought 2301 wrap 2302 user can playing image content and audio content.Equally, can specify the SDAF title on the existing magnetic track by CEL is added to.
In the distributing method shown in Figure 41 b, bag 2303 comprises a plurality of audio contents and picture material.Equally, single bag can comprise that all are included in the CE in the SDAF title.
As Figure 41.In the shown distributing method, single SDAF title is divided into bag 2304,2305 and 2306, is used for distribution.Bag 2305 comprises the content of magnetic track # 1 and wraps 2306 contents that comprise magnetic track #2.In this distributing method, can select to wrap a distribution in 2305 and 2306.
In addition, in player, can produce a new SDAF bag, it comprises the content that the user has.Figure 42 a is that the figure that how to produce the SDAF bag is shown to 42c.In 42c, user Bao Shi is wrapped by the SDAF that the user produces at Figure 42 a, and the bag of buying is the SDAF bag of distribution.The content of being surrounded by thick line is owned by the user.Here suppose that the user has the data of being read by DC, that is, and the audio content of reading from CD, and the picture material that itself produces by him.
Shown in Figure 42 a, the user can produce the bag 2401 that comprises by his all audio contents own.In addition, shown in Figure 42 b, the user can produce and comprise by his all audio frequency own and the bag 2402 of picture material.In addition, as Figure 42.Shown in, the user can produce bag 2404, can find audio content the bag 2403 that is included in purchase from this bag.If play bag 2404, then play audio content and all picture materials of user in the bag that is included in purchase.Therefore, the image that is included in the bag of purchase can be changed into by with the image that produces, and maybe can be added in the bag of purchase by the new image that the user produces.
Below, the SDAF one that describes DVD one audio disc be used to play extension is suitable for DVD one audio player.Player replaces original Play Control information (meeting DVD one audio standard), the controls playing operation by obeying the pilot data of being described by SDAF.Player is read pilot data and CE steady arm from DVD one audio disc that extends, and operates by the pilot data that obedience is read.If find original audio content or picture material from pilot data, player is consulted c day steady arm, with the information of acquisition content stores in which position, and plays this content.Player is read background image from DVD one audio region on the disc, and from SDAF data read button image, and engage them with the display menu screen.
Equally, extend DVD one audio disc by using, existing DVD one audio player can carry out traditional broadcast, and SDAF one adaptation DVD one audio player can be by using the pilot data display menu screen of being described by SDAF.
In the foregoing description, SDAF bag and CEL steering gear are stored in the disc.Perhaps, this data can be by network download to player.This method can be applicable to be sold to user's CD and DVD.In addition, by this method, can consult by use U RL can be by the CEL of communication network access.
Data conversion equipment is described below, and this equipment is used for the content of multimedia of SDAF appointment is copied to the external memory media that is used for portable music player.Here, portable music player constitutes as external memory media by using semiconductor memory, it is characterized in that size is little, in light weight and with the ability of write data therein at a high speed.As shown in figure 43, portable music player comprise can videotex LCD 2501, be used for control plane 2502 that control audio plays and the earphone 2503 that is used for audio frequency output.In addition, the storage card 2500 that is used for stores audio data can be releasably attached to portable music player.Portable music player is play the audio content that meets MPEGZ-AAC, and videotex information.But the data record format of storage card is not SDAF, but exclusive form.
Figure 44 is the block scheme that the structure of data conversion equipment is shown, and the content that this equipment is used for being recorded on DVD one audio disc of extension is converted to predetermined form, and the content of conversion is write the storage card that is used for portable music player.Among Figure 44, suppose the picture material of LPCM one format audio content, MPEG-1 frame format, Play Control information and the other text message of being described by SDAF are recorded in the disc 2601.
At data conversion equipment as shown in Figure 44, data sensing element 2602 is read Play Control information from disc 2601, and provides it to Play Control information analysis unit 2603.The Play Control information of reading is analyzed in Play Control information analysis unit 2603, and whether can play with the content of inspection record on disc 2601 maybe needs conversion.
Then, data sensing element 2602 is read the content that can be play by portable music player in succession from disc 2601, and the content of reading is offered Date Conversion Unit 2605.At this moment, do not read the content that portable music player can't be play.The content that Date Conversion Unit 2605 is read according to the type conversion of storage card 2500.For example, can not change by the portable music player text message that connects broadcast that extends such as title etc.On the other hand, the audio content of LPCM one form is converted to the MPEGZ-ACC form, thereby portable music player can play content.
The Play Control information that Play Control information translation unit 2604 is analyzed according to Play Control information analysis unit 2603 produces the Play Control information that is used for portable music player.The Play Control information that data r/w cell 2606 produces Play Control information translation unit 2604, and the content of Date Conversion Unit 2605 conversions writes storage card 2500.
Notice that Date Conversion Unit as shown in figure 44 can be converted to predetermined format with any content except that audio content, and the content of conversion is write storage card 2500.In addition, the data record format of storage card can be other any forms except SDAF.Have, in order to support a plurality of external memory medias, data conversion equipment can comprise Date Conversion Unit, Play Control information translation unit and the data r/w cell that is used for each external memory media again.
In addition, if do not have on the pilot data record disc 2601 of SDAF description, then as shown in figure 45, will obtain lacking data by communication network.Among Figure 45, suppose identification number is recorded in the disc 2601.For example, the identification number that is used for CD is directory code, IDRC sign indicating number and other sign indicating numbers.
As mentioned above, content distribution form SDAF according to the present invention is the form that is used to describe content of multimedia, and is mainly used in the music data distribution.Also have, engage the function of using SDAF can extend existing music data with existing music data.
Note, as know the music data of describing among first to the 3rd embodiment and as follows by comparison diagram % and 18 according to the relation between the SDAF of present embodiment.That is, stem 40 as shown in Figure 3 is corresponding to as shown in figure 18 stem 2011.Navigation information 41 shown in Figure 3 is corresponding to pilot data shown in Figure 180 2012.Content 42 shown in Figure 3 is corresponding to CEL2013 shown in Figure 180.Accounting information 43 shown in Figure 3 is corresponding to quotation shown in Figure 180 2014.
Though described the present invention in detail, foregoing description all is an illustrative and nonrestrictive.Should be understood that under the situation that does not deviate from scope of the present invention and can carry out multiple other modifications and variations.
The 4th embodiment
As the 4th embodiment,, the content distribution form of so-called SDAF (secure digital audio format) is described below as the specific examples of the data that copyright is arranged described in first to the 3rd embodiment.According to Figure 18 to 39, at first SDAF is described in detail, then with reference to Figure 40 to 45, describe and how to use SDAF.
Use is described content of multimedia according to the content distribution form (SDAF) of present embodiment, and it comprises audio frequency, image, video, text and file data.Here will be called the SDAF title by the content of multimedia that SDAF describes.Here the expression data that each comprised the SDAF title are called content is not had element (the following CEL that is called simply).Each CEL assigns a CEL identifier, it be exclusive in the SDAF title (below be called CELID).
The SDAF title is divided into the unit that is called SDAF bag and issues.Each SDAF bag is assigned the identifier of a bag, and it is exclusive in the whole publishing system.Figure 18 is the diagrammatic sketch that the example of SDAF bag is shown.As shown in figure 18, a SDAF title 2000 is made of a plurality of SDAF bags.Each bag 2001 is made of stem 2011, pilot data 2012, a plurality of CEL2013 and a quotation 2014.
Figure 19 a is the diagrammatic sketch that the type of three kinds of SDAF bags is shown to 19c.Be similar to Figure 18, the complete bag 2001 shown in Figure 19 c comprises stem 2011, pilot data 2012, a plurality of CEL2013 and offers 2014.Quotation bag 2002 shown in Figure 19 a comprises stem 2011, pilot data 2012 and offers 2014, but do not comprise any CEL2013.CEL bag 2003 shown in Figure 19 b comprises stem 2011 and a plurality of CEL2013.Because pilot data 2012 needs to play the SDAF title, can play complete bag 2001 and quotation bag 2002 separately, but the CEL bag is not all right.
According to the distribution channel, cut apart the SDAF title with the CEL bag.For example, when when using the CD-ROM distribution, in CD-ROM, be complete bag with the SDAF header record.On the other hand, when issuing, the SDAF title is divided into a complete bag and a plurality of CEL wraps and issue by the Internet.For example, the SDAF title is divided into a CEL bag that comprises the complete bag of audio frequency CEL and comprise the video CEL that finds from complete bag, is used for distribution.
In addition, as shown in Figure 20, can pass through magnetic track, the SDAF title is divided into a plurality of SDAF bags.In the cutting apart of as shown in figure 20 bag, the SDAF title 2020 that will comprise the voice data of five magnetic tracks is divided into three bags 2021 to 2023.First to three guarantees 2021 to 2023 have respectively bag the name be called Slnglel, SlngID2, and album.First and second bags 2021 and 2022 all comprise the audio frequency CEL of a magnetic track and are used to control the pilot data of the broadcast of CEL.Three guarantees 2023 comprise the audio frequency CEL of three magnetic tracks and control all and are included in first the pilot data of broadcast of audio frequency CE in the three guarantees 2021 to 2023.Equally, by the SDAF title being divided into a plurality of SDAF bags, can make each data size littler, and easily control each data.
Stem, quotation, pilot data and the CEL that constitutes the SDAF bag described below in order.
Figure 22 is the diagrammatic sketch that the structure of stem 2031 is shown.In stem 2031, store the data that describe below successively, and the stem size is BCH according to 16 system number scales.Note, shown in Figure 23 and 24, can C+ ten language description stems 2031.Figure 23 and 24 is figure that continuous source code is shown, and this source code is divided into two, and before being cut apart, source code 2062 is as shown in figure 24 followed source code shown in Figure 23 2061.
In the beginning of stem 2031, the storage representation file is the magic number (magic number) 2041 (4 byte) of SDAF form.The value of magic number 2041 is character string " SDAF ".Then, the version number 2042 (4 byte) of storage SDAF.Then the ID2043 of storage package (1 byte) and the bag size 2044 (4 byte).Then, the quantity of storing pilot data positional information 2045 (the SDAF LOCATION NAV among Figure 23), quotation positional information 2046 (SDAFLOCAT10NOFFER among Figure 23) and wrapping the CEL in 2047.Then, store the CEL information 2048 (SDAFLOCAT10NCEL among Figure 24) of each CEL.At last, the CEL attribute list 2049 of the attribute of each CEL of storage representation.
The position and the size of pilot data positional information 2045 expression pilot data 2032.The position and the size of the 2046 expression quotations 2034 of quotation positional information.These two information all by from the beginning of SDAF bag depart from and the size (4 byte) of each constitutes.
CEL information 2048 is made of CEL.ID205 (16 byte), CEL type 2052 (2 byte), CEL encryption type 2053 (2 byte), CEL Data Position information 2054 and CEL attribute list positional information 2055.CEL.ID20S1 is a content element identifiers, and it is exclusive in the SDAF title.The algorithm that 2053 expressions of CEL encryption type are used to encrypt CEL.CEL Data Position information 2054 and CEL attribute list positional information 2055 all are to be made of side-play amount (4 byte) and each size (4 byte) thereof with the beginning of SDAF bag.If side-play amount or size are 0, mean not have data.
CEL attribute list 2049 is the inventories of specifying the attribute of each CEL type.Audio frequency CEL attribute list (the audio frequency SADFHTTRHUD10 among Figure 24) comprises quantity, sampling frequency and the voice-grade channel quantity of CODEC, quantized position at least.Image C EL attribute list (the SDAF ATTR GRAPHIC among Figure 24) comprises height and the width and the encryption type of image at least.Video CEL attribute list comprises height and the width and the encryption type of video at least.The text attribute table comprises the encryption type of text at least, moves JID (Japanese Industrial Standards) such as solid size or music.File CEL attribute list comprises mime type (extension of multi-usage internet message) at least.
CEL attribute list 2049 is defined as the on-fixed lengths table, but the variable length marks table, as Figure 25 a to shown in the 25c.If use this mark structure, mark lengths and Tag ID are stored in the data front, shown in Figure 25 a.For example, image C EL attribute list is by signature 2063 and 2064 expressions of encryption type mark.By using this mark structure named list element, new table element can be added to form thus, perhaps can only change data layout by adding a mark.The mark structure that has big expansion potential by use is specified the CEL attribute list.
Quotation 2014 is described below.As mentioned above, quotation comprise a plurality of keys to the right purchase of each key regulation.Each key is to being made of the decryption key and the CEL.ID that are used for CEL deciphering, Figure 26 be illustrate this key to the diagrammatic sketch of CEL correlativity.As shown in figure 26, key is to comprising decruption key 2073 and ID2074.Each key is relevant with each CEL2071 to 2072.Quotation comprises that not only the key of the CEL that is comprised in the SDAF bag is right, comprises that also the key of the CEL that comprises in the SDAF bag of identical SDAF title is right.In other words, when SDAF bag being divided into a plurality of SDAF bag, have only a SDAF to comprise quotation, and this quotation comprise that all keys that are included in the CEL in the SDAF title are right.
By using a kind of language description purchase regulation that is used to describe the right service condition of key, be called rights language.The right service condition of key comprises buys date, life cycle, and whether has bought specific CEL or SDAF title.Buy regulation by using these service conditions to specify, thus, can be according to condition, according to the identical CEL of different sell at competitives.
In SDAF, with XML (extensible SGML (eXtenSlble Markup Language)) pilot data is described, this language is the mark descriptive language of text formatting.When with XML data of description structure, use the mark structure of text formatting.Therefore, compare with binary data, the data of describing with * ML are tediously long.But, owing to having fabulous extendability, XML uses it.
For example surmounts CEL from pilot data, use the CEL steady arm.The CEL steady arm is a string bag ID and ID, they adopt "? " as separator.But the CEI for being comprised in the SDAF bag that comprises pilot data omitted bag ID and separator, and CEL.ID is the CEL steady arm.The CEL steady arm can be specified CEL, and is irrelevant with the physical address of CEL.
Figure 28 is by using the CEL steady arm how to consult the diagrammatic sketch of CE from pilot data.In Figure 28, pilot data 2081 and expression data 2082 are shown as an example.Expression data 2082 comprise by the audio frequency CEL2083 that is encoded by MPEGZ-AAC with by JPCG image encoded CEL2084.The bag ID of audio frequency CEL2083 and CEL.ID are 1, and among the image C EL2084 those are respectively 1 and 2.In this case, and the CEL steady arm that comprises in the pilot data 2081 " 1? 1 " represent its bag ID " 1 ", audio frequency C the sixth of the twelve Earthly Branches 2083 of " CEL[D " " 1 ".CEL steady arm " 1 " " represent that it wraps DD " 1 ", the image C EL2084 of CEL[D " 2 ".As from this example, knowing, has only the variation of the structure that produces the SDAF title variation of the bag ID of CEL steady arm afterwards just causing SDAF bag.Therefore, the SDAF title can be constituted single bag, or the SDAF title is divided into a plurality of SDAF bags.
Figure 29 and 30 is according to following expression mode, and the figure of the mechanism of pilot data is shown.Each rectangle frame is represented an element of pilot data.Represent that as the arrow of signing in no plain B from elements A elements A comprises element B, as daughter element.Each mark that begins to be provided with at each arrow is expressed as follows: " the expression element comprises that 0 or more derivations do not have element; Ten expression elements comprise 1 or more daughter elements; And? the expression element comprises that 0 or 1 derives from the nothing element.If elements A comprises a project P (not having arrow), mean that then elements A has project P, as attribute.The project of underscoring is represented the CEL steady arm.The character string that the PC data representation is made of the character that is included in the predetermined character group.This expression will have title and not have plain hierarchy and be appointed as root.
Title does not have shipment (the sh towel ping) information that element 2101 has been described the SDAF title.This element has three attribute: UPC, VERS10N and LANGUAGE.UPC attribute description UPC (Universial Product Code), this is the international standard product code.The VERS10N attribute description version number of SDAF navigational structure.The LANGUAGE attribute has been described the type of language according to ID0639.Its default value is " en ", expression English.
No datat element 2102 has been described such as PL**[ID or information such as * * * cK element type.This no datat has the TYPE attribute.The TYPE attribute description metadata do not have plain type.
ASSOC element 2103 has been described the reference information to the CEL that comprises in other SDAF title.This element has the REF attribute.This REF attribute description the CEL steady arm.
PLAYLIST element 210S has described one and has shown inventory (playlist), and it is the elementary cell of SDAF title.Show inventory corresponding to the sleeve for phonograph record in traditional package media (slbu), and be included in all SDAF titles.The PLSYLIST element must comprise the MENU element, promptly shows the menu of inventory.PLAYLIST does not have element and has five attribute: NAME, ARTIST, PRODUCTID, THUBMNAILID and ONSTART.The NAME attribute description shows the title of inventory.The PRODUCTID attribute description is corresponding to the information of the directory code among the CD.The THUMBNAILID attribute description shows the CEL steady arm of typical image C EL in the inventory.The ONSTART attribute description is used to play the operation that shows inventory.If the ONSTSRT attribute is " PLAYLID ", player stops to play, and shows the menu of inventory simultaneously.If " TRACK ", then player begins to play PLAYLIST does not have a TRACK element that comprises in the element.All PLAYLIST elements have at least one TRACK element 2106.
TRACK element 2106 has been described the magnetic track that comprises an audio frequency CEL.The TRACK element can comprise magnetic track menu, slideshow, text, file and other.The TRACK element has seven attribute: ID.NAME, ARTIST, IDRC, AUDIOID, TSMID and THUMBA compare ID.ID attribute description exclusive identification number in SDAF title 2.The title of NAME attribute description TRACK element.The artistical name of ARTIST attribute description.ISRC attribute description ISR (ISRC).The AUDI01D attribute description do not have the CEL steady arm of plain audio frequency CEL about TRACK.The TSMID attribute description corresponding to the CEL steady arm of the time search of audio frequency CEL mapping.The time search mapping will be described below.The THUMBNAILID attribute description CEL steady arm of image C EL, it is typical in the TRACK element.
MARKER element 2107 has been described the mark that is used for seeking in the starting point of TRACK element.This no element has two attribute: TIME and NAME.The TIME attribute is with the position of millisecond descriptive markup.The title of NAME attribute description mark.
S LID S H OW element 2110 has been described and has been used at the predetermined demonstration gap playing lantern slides or the slideshow of menu.This element has four attribute: ID, NAME, TYPE and INTERVAL.The ID attribute description exclusive identification number in the SDAF title.The NAME attribute description title of lantern slide.The TYPE attribute description information category in the magnetic track, such as credit card, the lyrics (lyrics), staff note.Biography, image set or sales promotion.The INTERVAL attribute description demonstration gap of lantern slide or menu.
Text element 2113 is described text message.Text message is with the text data format description.Perhaps, can be by consulting TEXTCEL part specify text information.Text element has the attribute with SYNC text element system type.
Video elementary 2114 has been described any existing video CEL.This element has three attribute: ID.Video ID, and TYPE.Exclusive identification number in the ID attribute description SDAF title.The CEL steady arm of video ID attribute description video CEL.Information category in the TYPE attribute description magnetic track is such as credit card.The lyrics, staff note, biography, image set or sales promotion.
Document element 2115 is described any existing file CEL.This element has three attribute: ID, file ID and TYPE.Exclusive identification number in the ID attribute description SDAF title.The CEL steady arm of file ID attribute description file CEL.Information category in the TYPE attribute description magnetic track is such as credit card, the lyrics, staff note, biography, image set or sales promotion.
SLIDE element 2116 is described lantern slide.This element has three attribute: ID, NAME and BACKGROUNDID.Exclusive identification number in the ID attribute description SDAF title.NAME attribute description lantern slide title.BACKGROUND; The CEL steady arm of D attribute description lantern slide screen epigraph CEL.
MENU element 2117 has been described menu.Menu has the button on the one or more screens.The MENU element has four attribute: ID, NAME, BACKGROUNDID and SELECTID.Exclusive identification number in the ID attribute description SDAF title.NAME attribute description pad name.The CEL steady arm of the image C EL that shows on the BACKGROUNDID attribute description menu screen.SELECTID attribute description call number is used to specify the button that will be set to selection mode.
Button element 2118 has been described the button on the screen that is arranged on the menu screen.Do not have element as deriving from, button element comprises one or more pairs of TEXT﹠amp; Button and COMMAND element, perhaps GRAPHIC button and COMMAND element.Button element has seven attribute: INDEX, TAB, UP, DOWN.RIGHT, LEFT and AUTOACTION.Exclusive numbering in the INDEX attribute description MENU element.The continuous numbering that the TAB attribute description provides continuously for the button on the menu.U P, DOWN, LEFT and RIDHT attribute description lay respectively at the call number of purpose file button of the selection on top, following, the left side with respect to current button, the right.The AUTOACTIDN attribute description expression turntable whether automatically from choosing the mark of running.
TEXT﹠amp; Button does not have plain 2119 and has described the button on the screen, by text representation.This no element has seven attribute: X, Y, WIDTH, HEIGHT, FORNTS1ZE, NORMALCOLOR.SELECTCOLOR, ACIONCOLOR, PLAYINGCOLOR, TEXTID and REFID.X, Y, WIDTH and HEGHT attribute use coordinate system respectively, describe the display position of button, and wherein, the upper left corner of getting menu is as initial point.The FONTS1ZE element has been described font size.NORMALCOLOR, SELECTCOLOR, ACT10NCOLOR and PLAYINGCOLOR attribute respectively with rgb format described when button state serve as normal, select, running and the display color when playing.The TEXTID attribute description CEL steady arm of external text CEL.The REFID attribute description by the identification number of the TEXTREF element among the TEXTCEL of TEXTID appointment.
GRAPHIC button element 2120 has been described the button on the screen that is expressed as figure.This element has eight attribute: X, Y, WIDTH, HEIGHT, NORMALID, SELECTID, ACT10NID and PLAYINGID.X, Y, WIDTH and HEIGHT attribute divide other IJ to use coordinate system to describe the display position of button, wherein with the menu upper left corner as initial point.NORMALID, SELECTID, ACTIONID and PLAYINGID attribute describe respectively when the CEL steady arm of button state for figure CEL normal, that show when selecting, operating and playing.
COMMAND element 2121 has been described the navigation operation when the user pushes a button on the screen.This element has two attribute: TYPE and TARGET.The TYPE attribute description SHOW.In FUNCT10N, GOTO, NEXT and the PREV10US order any one.The SHOW order is used to show the element by the appointment of TARGET attribute.The FUNCT10N order is used to carry out the element by the appointment of TARGET attribute.When showing the inventory menu, use this order.The GOTO order is used for moving to from the no element of current demonstration the fraternal element of appointment.The PREVIOUS element is used for moving to from the element of current demonstration the fraternal element of front.The TARGET attribute description is by the parameter of the order of TYPE attribute appointment.If specify the SHOW order, the identification number of the TARGET attribute description element that will show then.If specify the FUNCTIDN order, the identification number of the element that will carry out of TARGET attribute description then.If specify the GOTO order, then the brother of the element of the current demonstration of TARGET attribute description does not have plain identification number.
The TEXTREF element has been described the text kind of information, is used for consulting from pilot data the part of the text data that is stored in TEXTCEL.By specifying TEXTREF not have plain identification number, consult TEXTREF from pilot data and do not have the text data that comprises the element.The TEXTREF attribute has the ID attribute.Exclusive identification number in the ID attribute description SDAF title.
CEL2013 is described below.CEL has five types: audio frequency CEL, image C EL, video CEL.Text CEL and file CEL.Data layout and parameter are assigned to the CEL of each type with SDAF.
Be that the data that comprise are voice datas among the audio frequency CEL, encode to such an extent that meet MPEGZ-AAC (Advanced Audio Coding) (low-complexity file).Notice that MPEGZ-AAC specifies MPEGZ-AAC with ISO/IEC13818-7:
1997 (E) infotech one moves the universal coding part 7 of image and related audio information, Advanced Audio Coding (AAC).Suppose that by M P EGZ-ACC bitstream encoded be ADTS (audio data transport stream) form.In addition, the parameter limit of describing among the ID011EC13818-7 is for as shown in figure 31.In these parameters, sampl ingfrequencyindex and channelconflguratlon are owing to the selection by the LC-file of ID0/IDC13818-7 appointment is restricted.In addition, mean bit rate is 64 or 128kbps.
The data epigraph data that comprised among the image C EL, it encodes to such an extent that meet JPEG, MPEG-1 frame, PNG (portable network figure).Figure 32,33 and 34 illustrates JPEG, the table of the specification of MPEG-I frame and PNG.The specification limits of algorithm that imposes on the encryption of image C EL is as shown in these figures situation.
The data that are included among the video CEL are video datas, encode to such an extent that meet MPEGZ.Figure 35 is the table that the specification of MPEGZ is shown.The specification limits of algorithm of encryption that imposes on video CEL is for as shown in figure 35.
The data that comprise among the text CEL are PLAIN text or XML texts of SDAF.Encryption type is that solid size or music move JID.
As the example of file CEL, description now comprises the time search mapping CEL of time search mapping as data.The mapping of this time search is a table, is made of the address of audio frame.Figure 36 is the figure that the structure of time search mapping is shown.As shown in figure 36, time search mapping 2090 is made of a stem 2091 and a plurality of project 2092.Figure 37,38a and 38b are form and diagrammatic sketch, are shown specifically stem 2091.As Figure 37, shown in 28a and the 38b, stem 2091 comprises the reproduction time between the project of describing with millisecond, and the project sum.Figure 39 is the table that is shown specifically each project.As shown in figure 39, each project comprises that audio frame goes into day the address of point at it.First project is represented the starting position of the audio frame that comprises among the audio frequency 0*L.
Notice that in the present embodiment, use MPEGZ-AAC compressed package is contained in the music data among the audio frequency CEL.Perhaps, can use MP3 (MPEGI audio layer 3), Doby one AC3, or DTS (Digital Theater System).
Describe how to use SDAF below with reference to Figure 40 to 45.As mentioned above, SDAF is the form that is used to describe content of multimedia, and is mainly used in the music data distribution.SDAF can be imposed on various types of recording mediums, typically hard disk, CD (such as DVD-RAM) and semiconductor memory (such as storage card).
Except the distribution of music data, SDAF can be used in existing music data and combines.For example, will describe below, SDAF can be used in combination with the music data that meets DVD one audio standard.Similarly, SDAF can be applied to other recording medium, such as DVD one video, CD, video one CD and CD photo.
The music data that meets DVD one audio standard comprises LPCM (linear impulsive code modulated) audio content and MPEG-1 two field picture content.Meet the interactive operation display menu screen of the player of DVD one audio standard for the user.In DVD one audio standard, by preferential maximized four sub-video images are added to background image with demonstration, and a plurality of rectangular areas are set in video image at these, show this menu screen.These rectangular areas are called button, and each button appointment has an order.But, be that quantity and shape have some restrictions to the Show Color of button, so content originator can't freely design menu screen.
This problem can be by the menu screen data recording that will describe with SDAF in advance in traditional DVD one audio disc, and uses these data presentation menus and solve when playing.More particularly, with the content of multimedia of SDAF description, and the CEL steering gear, be used for consulting original DVD one audio content from SDAF.Below, DVD one audio disc that records this data on it is called DVD one audio disc of extension, and the player that will be used to play DVD one audio disc of extension is called DVD one audio player that meets SDAF.
Figure 40 is an example that illustrates corresponding to the CEL steering gear of single DVD one audio disc.Each line display is included in the CEL steering gear of each content in original DVD one audio disc.The CEL steering gear comprises CEL.ID2201, file name 2202, start address 2203 and end address 2204.This CELID2201 is an energy content designator exclusive in the disc.File name 2202 is the titles that comprise the file of each content.Start and end address 2203 and 2204 is offset values of representing each content in starting position and end position and the file respectively.The CEL steering gear is recorded in the file of DVDA.MAP by name, for example the SDAF catalogue in being arranged on the ROM zone of extending DVD one audio disc.
Can use the SDAF pilot data to describe all various Play Control functions that define by DVD one audio standard, such as voice playing sequential control, the broadcast of slideshow image and menu function etc.For example, can be added to MPEG-I frame background image,, realize menu function to show and each button area is associated with a catalogue by the JPEG button image that preferentially just has any amount CF.
When the Play Control information translation that comprises in DVD one audio disc is the SDAF pilot data, by using the CEL steering gear, be CELID with the information translation of expression content.Menu screen is converted to the JPEG button image.With the image setting that obtains in position so, so that preferentially be added to background image.The pilot data and the button image that obtain in the manner described above are stored in the single SDAF bag, and are recorded in the file of SDAF.SDP by name, for example the SDAF catalogue in the ROM zone of DVD one audio disc that is arranged on extension.The method of extending DVD one audio disc of playing will be described below.
The SDAF player is described below, is used to play the content of multimedia of describing by SDAF.The SDAF player is play the music data of being issued in the following manner.At first, player searches bag ID and navigation information are to collect the CEL.ID that plays required CEL.Player uses several groups of bag ID and CEL.ID search purchase database, determines whether each CEL is purchased.If it is purchased to find to go back neither one CEL, the then quotation of player analysis of encoding, and by the predetermined price of existing electronic distribution system's payment.After the purchase, will be stored in key in the quotation to storing in the purchase database.If determine not find to play required SDAF bag in player, player will wrap ID and be sent to data distribution equipment.This data distribution equipment will send to player with the SDAF bag by the bag ID that receives.Buying after all play needed CEL, player uses the key that is stored in the purchase database to the CEL deciphering, to play.At this moment, the player explanation is used for the pilot data of Play Control.
This SDAF title is divided into one or more SDAF bags, and sends to player.Figure 41 a is the diagrammatic sketch that example how to issue the SDAF bag is shown to 41c.In the distributing method shown in Figure 41 a, bag 2301 comprises only audio content, only comprises an image or video and graphic content and wrap 2302.In addition, consult the audio content that is included in 2301 from wrapping 2302.Therefore, only bought wrap 2301 user only can the audio plays content.Wrap 2302 user and can play graphical content and audio content except wrapping to have bought 2301.Equally, can specify the SDAF title in the existing magnetic track by CEL is added to.
In the distributing method shown in Figure 41 b, bag 2303 comprises a plurality of audio contents and graphical content.Equally, single bag can comprise the CEL that is comprised in all SDAF titles.
As Figure 41.In the shown distributing method, single SDAF title is divided into bag 2304,2305 and 2306, is used for distribution.Bag 2305 comprises the content of magnetic track # 1, and bag 2306 comprises the content of magnetic track #2.In this clearance method, one that may select to wrap in 2305 and 2306 is used for distribution.
In addition, in player, can produce new SDAF bag, it comprises the content that the user has.Figure 42 a is the figure that the example that how to produce the SDAF bag is shown to 42c.In 42c, user Bao Shi is wrapped by the SDAF that the user produces at Figure 42 a, and the bag of buying is the SDAF bag of distribution.The content that is centered on by thick line is that the user has.Here hypothesis, the user has the data of reading from CD, i.e. the audio content of reading from CD, and by his 1 graphical content of herself making.
Shown in Figure 42 a, the user can produce a bag 2401, comprises by his 7 audio contents of herself making.In addition, shown in Figure 42 b, the user can produce bag 2402, comprises his 1 audio frequency that herself has and graphical content.Have again, as Figure 42.Shown in, the user can make a bag 2404, can wrap 2404 audio contents of consulting in the bag 2403 that is included in purchase by this.If play bag 2404, then play audio content in the bag that is included in purchase and the graphical content that has by the user.Therefore, the image of image modification for being made by the user that is included in the bag of purchase maybe can be added in the bag of purchase by the new image that the user makes.
Below, DVD one audio player that meets SDAF is described, be used to play DVD one audio disc of extension.Player is by following the pilot data described by SDAF (but not original Play Control information, it meets DVD one audio standard) controls playing operation.Player is read pilot data and CEL steady arm from DVD one audio disc that extends, and by following the pilot data operation of reading.If find original audio content or picture material from pilot data, then player is consulted the CEL steady arm, obtaining information about the memory contents position, and play content.Player is read background image from DVD one audio region on the disc, and from SDAF data read button image, also in conjunction with them with the display menu screen.
Equally, by DVD one audio disc that use to extend, existing DVD audio player can be carried out traditional broadcast, can be by using the pilot data display menu screen of being described by SDAF and meet DVD one audio player that SDAF one adapts to.
In the foregoing description, SDAF bag and CEL steering gear are stored in the disc.Perhaps, this data can be arrived player by network download.This method can be used for giving CD and the DVD that is sold to the user.In addition, in this way, can consult by use URL can be by the CEL of communication network access.
Below, the data of description conversion equipment is used for the content of multimedia with the SDAF appointment is copied to external memory media, is used for portable music player.Here, constitute portable music player as external memory media by using semiconductor memory, and it is characterized in that size little, in light weight, can be at a high speed data be write wherein.Portable music player comprises, as shown in figure 43, can play text LCD 2501, be used to control the control plane 2502 of music and be used for the earphone 2503 of audio frequency output.In addition, the storage card 2500 that is used for stores audio data can be releasably attached to portable music player.Portable music player is play and is met the MPEGZ-AAC audio content, goes back videotex information.But the data record format of storage card is not SDAF, but exclusive form;
Figure 44 is a block scheme, the content that is used for being recorded on DVD one audio disc of extension is shown is converted to predetermined format, and the content of conversion is write the structure of the data conversion equipment of the storage card that is used for portable music player.In Figure 44, suppose LPCM one format audio content, MPEG-1 frame format picture material, record in the disc 2601 by the Play Control information of SDAF description and the text message that adds.
In data conversion equipment as shown in figure 44, data sensing element 2602 is read Play Control information from disc 2601, and provides it to Play Control information analysis unit 2603.The Play Control information of reading is analyzed in Play Control information analysis unit 2603, to determine whether the playing content that is recorded on the disc 2601, still needs conversion.
Then, data sensing element 2602 is read the content that can be play by portable music player continuously from disc 2601, and the content of reading is offered Date Conversion Unit 2605.At this moment, not reading can not be by the content of portable music player broadcast.The content that Date Conversion Unit 2605 is read according to the type conversion of storage card 2500.For example, do not change the text message of can be directly playing by portable music player, such as title etc.On the other hand, the audio content of LPCM one form is converted to the MPEGZ-AAC form, thereby portable music player can play content.
Play Control information translation unit 2604 produces the Play Control information that is used for portable music player according to the Play Control information of being analyzed by Play Control information analysis unit 2603.Data r/w cell 2606 will write storage card 2500 by the Play Control information of Date Conversion Unit 2604 generations and the content of being changed by Date Conversion Unit 2605.
Notice that the Date Conversion Unit among Figure 44 can be converted to predetermined format with the arbitrary content except audio content, and the content after will changing writes storage card 2500.In addition, the data record format of storage card can be the arbitrary format beyond the SDAF.Have, in order to support a plurality of external memory medias, data conversion equipment can comprise Date Conversion Unit, Play Control information translation unit and the data r/w cell of each external memory media again.
In addition, if the pilot data that does not have record to describe with SDAF on disc 2601, as shown in figure 45, the data that lack can obtain by communication network.In Figure 45, suppose identification number is recorded in the disc 2601.For example, the identification number of music CD is directory code, IDRC sign indicating number and other sign indicating number.
As mentioned above, be the form that is used to describe content of multimedia according to the content distribution form SDAF of present embodiment, and be mainly used in the music data distribution.In addition, the function of using SDAF can extend existing music data in conjunction with existing music data.
Note the super release data of in first and second embodiment, describing and as follows according to the relation between the 80*F of present embodiment.That is, comprise second embodiment about the additional information of the reproduction control information of view data and voice data corresponding to as shown in figure 18 pilot data 2012.View data shown in content 205 shown in Fig. 2 or voice data 204 and second embodiment is corresponding to as shown in figure 18 cELZo13.Authorization administration information admin table 2o3 as shown in Figure 2 is corresponding to as shown in figure 18 quotation 2014.
Though described the present invention in detail, foregoing description is illustrative rather than definitive thereof.Will be appreciated that and under the situation that does not deviate from scope of the present invention, many other modifications and variations can be arranged.
Commercial Application
In the present invention, digital data copyright protection system can be implemented in the hand adversary's of line music distribution phase Should, music distribution has promoted to extend better to protect simultaneously copyright, and therefore collects suitable making to the user Expense.
Claims (6)
1. digital data reproducing apparatus is used to obtain to comprise the encrypted content of encrypted digital content and ID, and to reproduce digital content, this digital data reproducing apparatus comprises:
Receiving trap can receive described encrypted content from the outside;
The contents decryption device can be deciphered described encrypted content;
Transcriber can reproduce decrypted digital content;
The ID extraction element can extract an ID who is included in the encrypted content that is received by described receiving trap; With
The ID adding apparatus, enough user-dependent the 2nd ID with the described equipment of use of energy replace the described ID in described encrypted content, and to the outside of described reproducer output encrypted content.
2. digital data reproducing apparatus as claimed in claim 1 is characterized in that, also comprises:
Dispensing device can send the information that comprises an ID who is extracted by described ID extraction element to the server that is provided at the described equipment outside.
3. digital data reproducing apparatus as claimed in claim 2 is characterized in that, described encrypted content also comprises the book keeping operation control information relevant with the bill of described digital content, and described digital content reproducer also comprises:
Book keeping operation control information extraction element can extract the book keeping operation control information that is included in the described encrypted content, wherein
Described dispensing device produces the book keeping operation process information and the process information of will keeping accounts is sent to the server that is provided at the described equipment outside, in this information, a described ID is added into the book keeping operation control information of being extracted by described book keeping operation control information extraction element.
4. numerical data reproducting method that is applied to digital data reproducing apparatus is used to obtain to comprise the encrypted content of encrypted digital content and ID, and to reproduce digital content, this numerical data reproducting method comprises:
Receiving step is used for receiving from the outside described encrypted content;
The contents decryption step is used to decipher described encrypted content;
Reproduce step, be used to reproduce decrypted digital content;
The ID extraction step is used for extracting an ID who is included in the encrypted content that is received by described receiving step; With
ID adds step, is used for the described ID that replaces at described encrypted content with user-dependent the 2nd ID that uses described equipment, and to the outside of described reproducer output encrypted content.
5. numerical data reproducting method as claimed in claim 4 is characterized in that, also comprises:
Forwarding step is used for sending the information that comprises an ID who is extracted by described ID extraction step to the server that is provided at the described equipment outside.
6. numerical data reproducting method as claimed in claim 5 is characterized in that, described encrypted content also comprises the book keeping operation control information relevant with the bill of described digital content, and described digital content reproducting method also comprises:
Book keeping operation control information extraction step is used for extracting the book keeping operation control information that is included in described encrypted content, wherein
Described forwarding step produces the book keeping operation process information and the process information of will keeping accounts is sent to the server that is provided at the described equipment outside, in this information, a described ID is added into the book keeping operation control information of being extracted by described book keeping operation control information extraction step.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP247920/99 | 1999-09-01 | ||
| JP247923/99 | 1999-09-01 | ||
| JP24792099 | 1999-09-01 | ||
| JP258582/99 | 1999-09-13 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00801899.5A Division CN1224872C (en) | 1999-09-01 | 2000-08-30 | Digital data copyright protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1741063A true CN1741063A (en) | 2006-03-01 |
Family
ID=36093436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101097236A Pending CN1741063A (en) | 1999-09-01 | 2000-08-30 | Digital data copyright protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1741063A (en) |
-
2000
- 2000-08-30 CN CNA2005101097236A patent/CN1741063A/en active Pending
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