CN1832393B - Digital content propagation method based on digital copyright management system - Google Patents
Digital content propagation method based on digital copyright management system Download PDFInfo
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- CN1832393B CN1832393B CN200510053739XA CN200510053739A CN1832393B CN 1832393 B CN1832393 B CN 1832393B CN 200510053739X A CN200510053739X A CN 200510053739XA CN 200510053739 A CN200510053739 A CN 200510053739A CN 1832393 B CN1832393 B CN 1832393B
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Abstract
This invention discloses a numeric content transmission method based on DRM system, in which, a content providing party asks DRM system to test the copyright and recording of the numeric contents being transmitted by networks by a storage and transmission device, the DRM system estimates the propagation times of said numeric contents while testing the copyright and recording so that when a party having the right to call needs to pick up the ordered data of the contents, it gets the statistic result by interacting with the DRM system, which sends the contents with successful copyright test to the content receiving party.
Description
Technical field
The present invention relates to digital copyright management (DRM) technology, relate in particular to digital content propagation method based on the DRM system.
Background technology
In mobile service network, digital content distribution business such as downloading business, information series business and mobile flow medium service are by providing digital contents such as picture, audio frequency, video and KJAVA program for the user, and satisfy well the user demand, promote user's business experience.Therefore, the digital content distribution business is occupied most important position in the professional value chain in future.But, because digital content is easy to duplicate, cause distribution service to be difficult to protect the possessory rights and interests of digital content product, make industry can't obtain healthy and orderly development.
At present, the intellectual property protection of most of digital content product realizes by the DRM technology.The DRM technology is to realize the precondition of digital information product by network selling, promptly adopts the DRM technology can stop effectively by network and computer bootlegging, copy, transmission digital information product.Adopt the DRM system of DRM technology can protect the digital information product not to be subjected to the attack of following behavior:
The user without permission, by the deception or the deciphering online the watching or off-line playing stream media content of mode;
Authorized user with digital content to preserve or distribution without the form of protection;
3. the user carries out operation outside the license limitations scope to digital content;
4. authorized user offers other people use with the licence of oneself.
In addition, the DRM system can also be by carrying out reproduction time restriction, broadcasting time restriction and management to information content product being strengthened in the hardware environment binding of licence and user's use etc. to the user.
The DRM system has all distributed the content unique identification of a uniqueness for each legal digital content, and has set up the corresponding relation of content unique identification and service supplier (SP), copyright rule, contents attribute etc.Before the permission user of DRM system downloads and transmits; embedded the content unique identification of self in the protected digit content; so that the DRM system is by detecting this content unique identification; and correspond to information such as corresponding copyright rule, contents attribute and SP, thereby realize authentication to digital content.Foregoing uniqueness sign exists with the DRM content format (DCF) of digital watermarking or Open Mobile Alliance (OMA) regulation usually.Wherein, digital watermarking is meant with method for processing signals and embeds hidden mark that in digitized multi-medium data this mark has only by the detector of special use or reader and could extract.In the content unique identification of DCF form then is included in the medium type of version number, unencrypted digital content, the first-class information of metadata message except that digital content object according to the form of OMA regulation.
There are following two kinds of content uniquely identified methods of salary distribution in the present DRM system:
A kind of is the content unique identification method of salary distribution of having only SP and DRM to participate in.Under this mode, SP at first sends the digital content register requirement to the DRM system, and the original digital content of desire protection is submitted to the DRM system, requires to register in the DRM system; Then, the DRM system is that original digital content is distributed the content unique identification, and be embedded in this digital content with digital watermarking form or DCF form, simultaneously, the DRM system preserves the user profile that the SP, contents attribute, permission of content unique identification and this digital content download and whether allows information such as forwarding in self database; Then, the DRM system will include content uniquely identified digital content and return to SP, after SP preserves this digital content, wait for user's download.
In another mode, except SP and DRM system, also participated in distribution content uniquely identified process such as store-and-forward units such as Download Server.Under this mode, SP at first sends the digital content register requirement to the DRM system, and the original digital content of desire protection is submitted to the DRM system, requires to register in the DRM system; Then, the DRM system is that original digital content is distributed the content unique identification, and be embedded in this digital content with digital watermarking form or DCF form, simultaneously, the DRM system preserves the user profile that the SP, contents attribute, permission of content unique identification and this digital content download and whether allows information such as forwarding in self database; Then, the DRM system will include content uniquely identified digital content and send on the store-and-forward unit, and application is stored this digital content; After store-and-forward unit has been accepted the application of DRM system, self preserving this digital content, and (URL) address, unified resource location that will deposit this digital content returns to SP by the DRM system, after SP receives the URL address of this digital content, waits for user's download.
When the user wants to obtain certain digital content from SP, at first send the download digital content request of information such as carrying digital content sign and this subscriber identity code to SP, SP searches corresponding digital content according to the sign of the digital content in this request, and submit to the DRM system by the digital content that store-and-forward unit will carry this SP service code, subscriber identity code, request is carried out copyright and is detected; Then, the DRM system detects this digital content, seek the content unique identification that wherein carries, if can find, then the DRM system is an index with this content unique identification, in self database, find the record of this digital content, and digital content is carried out authentication according to this record, the SP information that is about in the record compares, judges with the SP of SP service code representative whether the active user has the right to download this digital content etc., and definite copyright testing result, if can not find the content unique identification, think that then the copyright testing result is that copyright detects failure; Subsequently, the DRM system returns to store-and-forward unit with the copyright testing result, if copyright detects successfully, then store-and-forward unit is handed down to the user with digital content, otherwise store-and-forward unit informs that the user can't provide the download of digital content.
It more than is the downloading process of digital content in the existing DRM system.The another kind of mode that digital content is propagated on network is to transmit, and promptly user A is transmitted to user B by DRM system and store-and-forward unit with a certain digital content.The detailed process that digital content is transmitted is as follows:
At first, user A is carried on the identity code of self and the digital content of desire forwarding in the request of forwarding, sends to store-and-forward unit.Store-and-forward unit detects request by sending copyright to the DRM system, and identity code and the digital content of user A are submitted to up; Then, the DRM system detects digital content, seek the content unique identification that wherein carries, finding under this content uniquely identified situation, in its data storehouse, search out corresponding record, and judge that according to record can this digital content be forwarded, thereby determine the copyright testing result, if the DRM system can't find the content unique identification from digital content, judge that then copyright detects failure; DRM returns to store-and-forward unit with the copyright testing result then, if copyright detects successfully, then store-and-forward unit is handed down to user B with digital content, otherwise store-and-forward unit informs that user A can't transmit this digital content.
The process of above-mentioned DRM system downloads and forwarding digital content as seen, can't add up seniority among brothers and sisters to the download and the hop count of digital content in the method for existing DRM system spreading digital content, the pouplarity of each digital content in the user can't in time be understood by SP and operator, thereby can't upgrade the kind of digital content at user's request; In addition,, therefore be not easy to, be unfavorable for professional carrying out the quantitative statistics of existing network Business Stream because the download and the forwarding situation of digital content in the concrete time period can't be known in operator.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of digital content propagation method, realize that digital content is downloaded and the seniority among brothers and sisters statistics of hop count based on the DRM system.
For achieving the above object, the invention provides a kind of digital content propagation method based on the DRM system, this method is: the DRM system expands self preserving content uniquely identified database in advance, promptly except content unique identification and corresponding copyright rule, contents attribute and service supplier SP information, also increase the download time of digital content, and when the DRM system is digital content distribution content unique identification, the download time of described digital content is designated as 0; Digital content provider carries out copyright by store-and-forward unit request DRM system to the digital content of desiring to spread through the internet and detects and record; The DRM system carry out that copyright detects and record in, the download time of this digital content is added up so that a side who has the right to call is when needing to extract the digital content ranking data, by with the DRM system obtain described statistics alternately; The DRM system detects successful digital content by store-and-forward unit with copyright and is handed down to the digital content recipient.
Described digital content provider may further comprise the steps by the method that store-and-forward unit request DRM system carries out copyright detection and record to the digital content of desiring to spread through the internet:
A11. digital content receive direction digital content provider sends the download digital content request that carries digital content sign and digital content recipient identity code;
A12. the digital content provider is according to the digital content sign of carrying in the digital content download request that receives, after searching the required digital content of digital content recipient, with service code and the digital content recipient identity code of this digital content, be handed down to store-and-forward unit together with this digital content provider;
A13. store-and-forward unit digital content, digital content provider's service code and the digital content recipient identity code that will come from the digital content provider sends to the DRM system, and request is carried out copyright to this digital content and detected.
Described DRM system carry out that copyright detects and record in, the method that the download time of this digital content is added up comprises:
The A2.DRM system carries out the content uniquely identified to the digital content of being received and detects, and the DRM database is carried out the detection of the record of this content unique identification correspondence, and the detection of digital content recipient being downloaded authority; And judge whether all to detect success, if, judge that then the copyright testing result is that copyright detects successfully, and the download time of this digital content is added 1, otherwise, judge that the copyright testing result is that copyright detects failure;
Described DRM system detects the method that successful digital content is handed down to the digital content recipient by store-and-forward unit with copyright:
The A3.DRM system returns the copyright testing result to store-and-forward unit, and store-and-forward unit judges whether the copyright testing result that receives is that copyright detects successfully, if then store-and-forward unit is handed down to the digital content recipient with digital content; Otherwise store-and-forward unit is according to the copyright testing result, and indicating to the digital content recipient to provide download.
Described steps A 2 may further comprise the steps:
The A21.DRM system detects the content unique identification in the digital content of being received, and judges whether to detect the content unique identification, if, execution in step A22 then, otherwise, execution in step A25;
The A22.DRM system is that index is retrieved with this content unique identification in self database, and judges whether to retrieve the record of this content unique identification correspondence, if, execution in step A23 then, otherwise, execution in step A25;
A23. the user profile downloaded of the permission that in database, comprises in the pairing record according to digital content recipient's identity code of receiving and this content unique identification, whether the digital content recipient who judges this digital content recipient identity code correspondence has the authority of downloading this digital content, if, execution in step A24 then, otherwise, execution in step A25;
A24. judge that the copyright testing result is that copyright detects successfully, and the download time of this digital content is added 1, finish detection of this DRM copyright and download time seniority among brothers and sisters statistics flow process;
A25. judge that the copyright testing result is that copyright detects failure, finish detection of this DRM copyright and download time seniority among brothers and sisters statistics flow process.
Described steps A 25 is judging that the copyright testing result is that this method further comprised: determine failure cause, and failure cause is carried in the copyright testing result after copyright detected failure;
When then in described digital content, detecting the failure of content unique identification, determine that failure cause is: do not have the content unique identification;
When detecting the record failure of content unique identification correspondence in the DRM database, determine that failure cause is: digital content is not protected by copyright;
When the digital content recipient haves no right to download described digital content, determine that failure cause is: have no right to download.
In the steps A 3 store-and-forward unit to the digital content recipient indicate can't provide download after, this method further comprises: store-and-forward unit indicates the reason that download can't be provided according to the failure cause that carries in the copyright testing result to the digital content recipient.
Described digital content provider is: service supplier SP; Digital content recipient is: the user.
A side who has the right to call is SP, then describedly may further comprise the steps by the method for obtaining described statistics alternately with the DRM system:
C11.SP sends the digital content ranking data request of obtaining that carries this SP service code to the DRM system;
The C12.DRM system retrieves qualified digital content ranking data, and returns to SP according to the received digital content ranking data request of obtaining in self database;
C13.SP generates the digital content ranking list of this SP according to the digital content ranking data that receives.
A side who has the right to call is an operator, then describedly may further comprise the steps by the method for obtaining described statistics alternately with the DRM system:
C21. operator sends the digital content ranking data request of obtaining that carries the condition of obtaining to the DRM system;
The C22.DRM system is according to the digital content ranking data request of obtaining that receives, and retrieval meets the digital content ranking data of the condition of obtaining in self database, and returns to operator;
C23. operator generates the digital content ranking list that self needs according to the digital content ranking data that receives.
A kind of digital content propagation method based on digital copyright management DRM system, the DRM system expands self preserving content uniquely identified database in advance, promptly except the user profile of content unique identification and corresponding copyright rule, contents attribute, service supplier SP, the user profile that allows download and permission forwarding, also comprise the content unique identification the hop count of corresponding digital content, and when the DRM system is digital content distribution content unique identification, the hop count of described digital content is designated as 0; Digital content provider carries out copyright by store-and-forward unit request DRM system to the digital content of desiring to spread through the internet and detects and record; The DRM system carry out that copyright detects and record in, the hop count of this digital content is added up so that a side who has the right to call is when needing to extract the digital content ranking data, by with the DRM system obtain described statistics alternately; The DRM system detects successful digital content by store-and-forward unit with copyright and is handed down to the digital content recipient.
Described digital content provider by the method that store-and-forward unit request DRM system carries out copyright detection and record to the digital content of desiring to spread through the internet is:
The digital content that digital content provider will transmit is submitted to store-and-forward unit together with the code of self; Store-and-forward unit sends to the DRM system with digital content and the digital content provider identity code that receives again, and request is carried out copyright to this digital content and detected.
Described DRM system carry out that copyright detects and record in, the method that the hop count of this digital content is added up comprises:
The B2.DRM system carries out the content uniquely identified to the digital content of being received and detects, and the DRM database is carried out the detection of the record of this content unique identification correspondence, and the detection of digital content providers being transmitted authority; And judge whether all to detect success, if, judge that then the copyright testing result is that copyright detects successfully, and the hop count of this digital content is added 1, otherwise, judge that the copyright testing result is that copyright detects failure;
Described DRM system detects the method that successful digital content is handed down to the digital content recipient by store-and-forward unit with copyright:
The B3.DRM system returns the copyright testing result to store-and-forward unit, and store-and-forward unit judges whether the copyright testing result that receives is that copyright detects successfully, if then store-and-forward unit is handed down to the digital content recipient with digital content; Otherwise store-and-forward unit indicates and can't transmit to the digital content provider according to the copyright testing result.
Described step B2 may further comprise the steps:
The B21.DRM system detects the content unique identification in the digital content of being received, and judges whether to detect this content unique identification, if, execution in step B22 then, otherwise, execution in step B25;
The B22.DRM system is that index is retrieved with this content unique identification in self database, and judges whether to retrieve the record of this content unique identification correspondence, if, execution in step B23 then, otherwise, execution in step B25;
B23. the user profile of transmitting according to the permission that comprises in the digital content provider's identity code that receives and the pairing record of this content unique identification, whether the digital content provider who judges this digital content provider code correspondence has the authority of transmitting this digital content, if, execution in step B24 then; Otherwise, execution in step B25;
B24. judge that the copyright testing result is that copyright detects successfully, and the hop count of this digital content is added 1, finish detection of this DRM copyright and hop count seniority among brothers and sisters statistics flow process;
B25. judge that the copyright testing result is that copyright detects failure, finish detection of this DRM copyright and hop count seniority among brothers and sisters statistics flow process.
Described step B25 is judging that the copyright testing result is that this method further comprised: determine failure cause, and failure cause is carried in the copyright testing result after copyright detected failure;
When then in described digital content, detecting the failure of content unique identification, determine that failure cause is: do not have the content unique identification;
When detecting the record failure of content unique identification correspondence in the DRM database, determine that failure cause is: digital content is not protected by copyright;
When the digital content provider haves no right to transmit described digital content, determine that failure cause is: have no right to transmit.
Among the step B3 store-and-forward unit to the digital content provider indicate can't transmit after, this method further comprises: store-and-forward unit indicates the reason that can't transmit according to the failure cause that carries in the copyright testing result to the digital content provider.
A side who has the right to call is SP, then describedly may further comprise the steps by the method for obtaining described statistics alternately with the DRM system:
C11.SP sends the digital content ranking data request of obtaining that carries this SP service code to the DRM system;
The C12.DRM system retrieves qualified digital content ranking data, and returns to SP according to the received digital content ranking data request of obtaining in self database;
C13.SP generates the digital content ranking list of this SP according to the digital content ranking data that receives.
A side who has the right to call is an operator, then describedly may further comprise the steps by the method for obtaining described statistics alternately with the DRM system:
C21. operator sends the digital content ranking data request of obtaining that carries the condition of obtaining to the DRM system;
The C22.DRM system is according to the digital content ranking data request of obtaining that receives, and retrieval meets the digital content ranking data of the condition of obtaining in self database, and returns to operator;
C23. operator generates the digital content ranking list that self needs according to the digital content ranking data that receives.
Use the present invention, in the process that digital content is propagated by the DRM system, can realize downloading seniority among brothers and sisters statistics with hop count.Particularly, the present invention has following beneficial effect:
1. among the present invention, the DRM system is when carrying out copyright detection and record to the digital content that will be downloaded or transmit, propagation times to this digital content is added up, promptly when the copyright authentication success, the download or the hop count of this digital content are added 1, thereby obtain the ranking data of this digital content, realize the seniority among brothers and sisters statistics.
2. use the digital content propagation method based on the DRM system of the present invention, when SP or operator when needed, mutual by with the DRM system obtains the digital content ranking data that belongs to the digital content ranking data of this SP and meet the condition of obtaining of this operator respectively.SP or operator obtain required digital content ranking list after the ranking data that is obtained is carried out respective handling, develop direction for the follow-up digital content of SP or operator reference frame is provided.
3. operator can compare hinge with the digital content ranking data that this and last time obtain, and draws the propagation condition in the network of digital content in this section period, is convenient to add up the existing network service traffics, helps professional carrying out.
Description of drawings
Fig. 1 is the digital content method for down loading flow chart that the present invention is based on the DRM system.
Copyright detects Fig. 2 and the method flow diagram of record for DRM system among Fig. 1 carries out.
Fig. 3 is the digital content retransmission method flow chart that the present invention is based on the DRM system.
Copyright detects Fig. 4 and the method flow diagram of record for DRM system among Fig. 3 carries out.
Fig. 5 carries out the method flow diagram that the digital content ranking data represents for the present invention to SP.
Fig. 6 carries out the method flow diagram that the digital content ranking data represents for the present invention to operator.
Embodiment
For making purpose of the present invention, technical scheme clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
The present invention is a kind of digital content propagation method based on the DRM system, and its basic thought is: digital content provider passes through store-and-forward unit with the digital content of desiring to spread through the internet, and request DRM system carries out copyright and detects and record; The DRM system adds up the propagation times of this digital content when carrying out copyright detection and record, and then the DRM system will be handed down to the digital content recipient through the digital content that copyright detects by store-and-forward unit again; And when calling the side needs extraction of ranking data when having the right, the DRM system sends to this called side with statistics.
Digital content propagation mode of the present invention comprises download and transmits two kinds.For the digital content downloading process that the present invention is based on the DRM system, the provider of digital content is SP, and the recipient is the user; For the digital content repeating process that the present invention is based on the DRM system, the provider of digital content is the user A that has this digital content, and the recipient of digital content is user B.
Be embodiment with the download and the repeating process of digital content respectively below, describe the digital content propagation method that the present invention is based on the DRM system.
Embodiment 1: based on the digital content method for down loading of DRM system.
In the present embodiment, the DRM system expands self preserving content uniquely identified database in advance, promptly except information such as content unique identification and corresponding copyright rule, contents attribute and SP, has also increased download time.And, when the DRM system is digital content distribution content uniqueness when sign, the download time of this digital content is designated as 0.
As shown in Figure 1, the present invention's DRM system digits content download method that can carry out digital content download time seniority among brothers and sisters statistics may further comprise the steps:
Step 101. user sends the download digital content request that carries digital content sign and subscriber identity code to SP.
When the user wants to obtain certain digital content from SP, then in this step by clicking the link that provides on the SP website or to modes such as SP send SMS message, request SP download digital content, indicate the digital content that to download by the digital content sign simultaneously, by indicate the recipient of this digital content such as subscriber identity codes such as subscriber phone numbers, so that the DRM system carries out issuing of digital content and charging etc.
Step 102.SP with service code and the subscriber identity code of this digital content together with this SP, is handed down to store-and-forward unit after self search the required digital content of user.
In this step, SP is according to the digital content sign of carrying in the digital content download request, self searching corresponding digital content, then this digital content is sent to store-and-forward unit, indicate concrete SP under this digital content by the SP service code simultaneously, and indicate the user of this digital content of request by subscriber identity code.
Digital content, SP service code and subscriber identity code that step 103. store-and-forward unit will come from SP send to the DRM system, and request is carried out copyright to this digital content and detected.
In this step, store-and-forward unit can be by multiple modes such as message or signalings, whether legal request DRM system carries out copyright to the digital content that comes from SP and detects, whether have the right to download this digital content so that determine current digital content and active user.
When step 104.DRM system carries out the copyright detection to digital content, carry out download time seniority among brothers and sisters statistics.
Database in the present embodiment DRM system except content unique identification and corresponding copyright rule, contents attribute, SP, user profile that permission is downloaded and the information such as user that allow to transmit, also comprise this content unique identification the download time of corresponding digital content.
With reference to Fig. 2, in this step, the DRM system carries out the method that copyright detects and the download time seniority among brothers and sisters is added up and may further comprise the steps:
Step 201～202.DRM system detects the content unique identification in the digital content of being received, and judges whether to detect this content unique identification, if then execution in step 203; Otherwise, execution in step 207.
This place DRM system searches for and discerns the various information that comprised in the digital content that comes from store-and-forward unit, so that find the content unique identification that wherein exists with digital watermarking or DCF form.
Step 203～204.DRM system is that index is retrieved with this content unique identification in self database, and judges whether to retrieve the record of this content unique identification correspondence, if then execution in step 205; Otherwise, execution in step 207.
First the recording start of DRM system from its data storehouse retrieved one by one, judge that the content unique identification that comprised in the record is whether identical with content unique identification in this digital content, if identical, then judge the current record that is recorded as content unique identification correspondence in this digital content; Otherwise, turn to next the bar record in the DRM database.
In this step, the DRM system at first gets access to from the record of this digital content correspondence has the pairing subscriber identity code of user of downloading authority, judge then whether received subscriber identity code is consistent with a subscriber identity code in the record, if judge that then the active user has the authority of downloading this digital content; Otherwise, judge that the active user does not have the authority of downloading this digital content.
When the DRM system finds the content unique identification from the digital content of being received, to find the record of the record of this content unique identification correspondence and this content unique identification correspondence to show in the DRM database current when having the authority of downloading this digital content, the DRM system gets the result that publishing right is detected as merit, allows the active user to download this digital content; And the DRM system adds 1 with the download time in the record of this content unique identification correspondence, realizes the seniority among brothers and sisters statistics to this digital content download time.
If do not cause this step to draw the copyright testing result of failure owing to detecting the content unique identification in the step 202, the copyright of then carrying in the copyright result at this place detects failure cause and is: do not have the content unique identification; If because step 204 does not retrieve the pairing record of content unique identification in the DRM database, and causing this step to draw the copyright testing result of failure, the copyright of then carrying in the copyright result at this place detects failure cause and is: digital content is not protected by copyright; If do not cause this step to draw the copyright testing result of failure owing to active user in the step 205 does not have the authority of downloading this digital content, then the failure cause that carries in the copyright testing result at this place is: have no right to download.
So far, detection of the copyright in the step 104 and download time seniority among brothers and sisters statistics are finished.
Step 105～106.DRM system returns the copyright testing result to store-and-forward unit, detects successfully if the copyright testing result is a copyright, and then store-and-forward unit is handed down to the user with digital content; Otherwise the failure cause that store-and-forward unit carries according to the copyright testing result indicates the reason that download can't be provided to the user.
So far the digital content downloading process based on the DRM system is finished in the present embodiment.
The transmission method of digital content in network can also be transmitted to user B by the user A that has this digital content except downloading.Introduce among the present invention digital content retransmission method below based on the DRM system.
Embodiment 2: based on the digital content retransmission method of DRM system.
In the present embodiment, the DRM system expands self preserving content uniquely identified database in advance, promptly except content unique identification and corresponding copyright rule, contents attribute, SP, user profile that permission is downloaded and the information such as user that allow to transmit, also comprise this content unique identification the hop count of corresponding digital content.And, when the DRM system is digital content distribution content uniqueness when sign, the hop count of this digital content is designated as 0.
As shown in Figure 3, the present invention's DRM system digits content forwarding method that can carry out digital content hop count seniority among brothers and sisters statistics may further comprise the steps:
The digital content that step 301～302. user A will transmit is submitted to store-and-forward unit together with the identity code of self, store-and-forward unit sends to the DRM system with the digital content that receives and the identity code of user A again, and request is carried out copyright to this digital content and detected.
After user A has downloaded an item of digital content from SP, desire to be transmitted to user B, then will be carried in this digital content such as the identity code as user A such as phone number of user A self, submit to store-and-forward unit.
After store-and-forward unit receives the identity code of digital content and user A, by multiple modes such as message or signalings, the digital content and the identity code that will come from user A send to the DRM system, whether legal and request DRM system carries out copyright to this digital content and detects, whether have the right to transmit this digital content so that determine current digital content and active user.
When step 303.DRM system carries out the copyright detection to digital content, carry out hop count seniority among brothers and sisters statistics.
Database in the present embodiment DRM system except information such as the content unique identification that comprises digital content and corresponding copyright rule, contents attribute and SP, also comprise this content unique identification the hop count of corresponding digital content.
With reference to Fig. 4, in this step, the DRM system carries out the method that copyright detects and the hop count seniority among brothers and sisters is added up and may further comprise the steps:
Step 401～402.DRM system detects the content unique identification in the digital content of being received, and judges whether to detect this content unique identification, if then execution in step 403; Otherwise, execution in step 407.
This place DRM system searches for and discerns coming from the various information that comprised in the digital content in the store-and-forward unit, so that find the content unique identification that wherein exists with digital watermarking or DCF form.
Step 403～404.DRM system is that index is retrieved with this content unique identification in self database, and judges whether to retrieve the record of this content unique identification correspondence, if then execution in step 405; Otherwise, execution in step 407.
First the recording start of DRM system from its data storehouse retrieved one by one, judge that the content unique identification that comprised in the record is whether identical with content unique identification in this digital content, if identical, then judge the current record that is recorded as content unique identification correspondence in this digital content; Otherwise, turn to next the bar record in the DRM database.
In this step, the DRM system at first gets access to from the record of this digital content correspondence has the pairing code of user of transmitting authority, whether the identity code of judging received user A then is consistent with an identity code in the record, if judge that then user A has the authority of transmitting this digital content; Otherwise, judge that the active user does not have the authority of transmitting this digital content.
When the DRM system finds the content unique identification from the digital content of being received, to find the record of the record of this content unique identification correspondence and this content unique identification correspondence to show in the DRM database current when having the authority of transmitting this digital content, the DRM system gets the result that publishing right is detected as merit, allows user A to transmit this digital content; And the DRM system adds 1 with the hop count in the record of this content unique identification correspondence, realizes the seniority among brothers and sisters statistics to this digital content hop count.
If do not cause this step to draw the copyright testing result of failure owing to detecting the content unique identification in the step 402, the copyright of then carrying in the copyright result at this place detects failure cause and is: do not have the content unique identification; If because step 404 does not retrieve the pairing record of content unique identification in the DRM database, and causing this step to draw the copyright testing result of failure, the copyright of then carrying in the copyright result at this place detects failure cause and is: digital content is not protected by copyright; If do not cause this step to draw the copyright testing result of failure owing to user A in the step 405 does not have the authority of transmitting this digital content, then the failure cause that carries in the copyright testing result at this place is: have no right to transmit.
So far, detection of the copyright in the step 303 and hop count seniority among brothers and sisters statistics are finished.
Step 304～305.DRM system returns the copyright testing result to store-and-forward unit, detects successfully if the copyright testing result is a copyright, and then store-and-forward unit is handed down to user B with digital content; Otherwise store-and-forward unit indicates the reason that can't transmit according to the failure cause that carries in the copyright testing result to user A.
So far the digital content repeating process based on the DRM system is finished in the present embodiment.
In the application of reality, the download of same digital content and transmit is usually finished by same DRM system, then in the database in the DRM system except information such as content unique identification and corresponding copyright rule, contents attribute and SP, also comprise simultaneously the foregoing unique identification the download time and the hop count of corresponding digital content.
Use of the present invention based on download of DRM system digits content or retransmission method, such as a have the right side of call number content ranking data such as SP, operator, when needs are known the ranking data of digital content, mutual by with the DRM system, obtain required digital content and download and hop count, said process is called as representing of digital content ranking data.
As shown in Figure 5, when a side of the call number content ranking data of having the right was SP, the exhibiting method of digital content ranking data may further comprise the steps:
Step 501.SP sends the digital content ranking data request of obtaining that carries this SP service code to the DRM system.
When SP need obtain to belong to the number of times that self digital content is downloaded and transmits, then in this step, SP was by modes such as message, signalings, the service code of representing the SP identity is carried on obtains in the request of digital content ranking data, sent to the DRM system.
Qualified digital content ranking data is retrieved according to the digital content ranking data request of obtaining that receives by step 502.DRM system in its data storehouse.
In this step, the DRM system at first parses the SP service code from coming from obtaining the request of digital content ranking data of SP; Then, be index with this SP service code, in the database of DRM system, retrieve, seek the record of the digital content that belongs to this SP, and obtain download and hop count in the above-mentioned record.
Step 503.DRM system returns to SP with the digital content ranking data that retrieves.
Step 504.SP generates the digital content ranking list of this SP according to the digital content ranking data that receives.
In this step, SP carries out statistical computation to the digital content ranking data that receives in step 503, generate the digital content ranking list of this SP, for example: the hop count of each digital content of the download time of each digital content of this SP and download ranking list, this SP and forwarding ranking list, the download time of all digital contents of this SP, the hop count of all digital contents of this SP etc.
By above-mentioned steps 501 to 504, SP can comparatively clearly obtain the pouplarity of himself various digital content in the user, and with this reference data as the direction of digital content exploitation later on.
As shown in Figure 6, when a side of the call number content ranking data of having the right was operator, the exhibiting method of digital content ranking data may further comprise the steps:
Step 601. operator sends the digital content ranking data request of obtaining that carries the condition of obtaining to the DRM system.
When operator need obtain information that digital content is downloaded and transmits, then in this step, operator was by message, signaling and direct mode such as accessing database, and the condition of will obtaining is carried on to be obtained in the request of digital content ranking data, sends to the DRM system.The condition of obtaining herein is meant that operator wants the type of the digital content ranking data that obtains, for example: the concrete hop count of each digital content that the concrete download time of each digital content that download time is preceding 50 and hop count, hop count are preceding 100 and the download of the digital content that all SP provide and hop count or the like.
Step 602.DRM system is according to the digital content ranking data request of obtaining that receives, and retrieval meets the digital content ranking data of the condition of obtaining in its data storehouse.
In this step, the DRM system at first parses the condition of obtaining from coming from obtaining the request of digital content ranking data of operator; Then, obtaining condition with this is index, retrieves in the database of DRM system, seeks to meet the digital content ranking data that this obtains condition.For example, when the condition of obtaining is the download time of each preceding 50 digital content of download time, then the DRM system retrieves self database and compares hinge, at first obtain the record of the maximum digital content correspondence of download time, then the order of successively decreasing according to download time obtains the record of each digital content correspondence.
Step 603.DRM system returns to operator with the digital content ranking data that retrieves.
Step 604. operator generates the digital content ranking list that self needs according to the digital content ranking data that receives.
In this step, operator carries out statistical computation to the digital content ranking data that receives in step 603, generate the needed digital content ranking list of this operator, for example: the digital content ranking data of all SP of obtaining digital content ranking data and last time of all SP of current acquisition is compared hinge, draw the SP ranking list in this section period.
So far, finished digital content ranking data representing to operator.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. digital content propagation method based on digital copyright management DRM system, it is characterized in that, the DRM system expands self preserving content uniquely identified database in advance, promptly except content unique identification and corresponding copyright rule, contents attribute and service supplier SP information, also increase the download time of digital content, and when the DRM system is digital content distribution content unique identification, the download time of described digital content is designated as 0; Digital content provider carries out copyright by store-and-forward unit request DRM system to the digital content of desiring to spread through the internet and detects and record; The DRM system carry out that copyright detects and record in, the download time of this digital content is added up so that a side who has the right to call is when needing to extract the digital content ranking data, by with the DRM system obtain described statistics alternately; The DRM system detects successful digital content by store-and-forward unit with copyright and is handed down to the digital content recipient.
2. the method for claim 1 is characterized in that, described digital content provider may further comprise the steps by the method that store-and-forward unit request DRM system carries out copyright detection and record to the digital content of desiring to spread through the internet:
A11. digital content receive direction digital content provider sends the download digital content request that carries digital content sign and digital content recipient identity code;
A12. the digital content provider is according to the digital content sign of carrying in the digital content download request that receives, after searching the required digital content of digital content recipient, with service code and the digital content recipient identity code of this digital content, be handed down to store-and-forward unit together with this digital content provider;
A13. store-and-forward unit digital content, digital content provider's service code and the digital content recipient identity code that will come from the digital content provider sends to the DRM system, and request is carried out copyright to this digital content and detected.
3. method as claimed in claim 2 is characterized in that, described DRM system carry out that copyright detects and record in, the method that the download time of this digital content is added up comprises:
The A2.DRM system carries out the content uniquely identified to the digital content of being received and detects, and the DRM database is carried out the detection of the record of this content unique identification correspondence, and the detection of digital content recipient being downloaded authority; And judge whether all to detect success, if, judge that then the copyright testing result is that copyright detects successfully, and the download time of this digital content is added 1, otherwise, judge that the copyright testing result is that copyright detects failure;
Described DRM system detects the method that successful digital content is handed down to the digital content recipient by store-and-forward unit with copyright:
The A3.DRM system returns the copyright testing result to store-and-forward unit, and store-and-forward unit judges whether the copyright testing result that receives is that copyright detects successfully, if then store-and-forward unit is handed down to the digital content recipient with digital content; Otherwise store-and-forward unit is according to the copyright testing result, and indicating to the digital content recipient to provide download.
4. method as claimed in claim 3 is characterized in that, described steps A 2 may further comprise the steps:
The A21.DRM system detects the content unique identification in the digital content of being received, and judges whether to detect the content unique identification, if, execution in step A22 then, otherwise, execution in step A25;
The A22.DRM system is that index is retrieved with this content unique identification in self database, and judges whether to retrieve the record of this content unique identification correspondence, if, execution in step A23 then, otherwise, execution in step A25;
A23. the user profile downloaded of the permission that in database, comprises in the pairing record according to digital content recipient's identity code of receiving and this content unique identification, whether the digital content recipient who judges this digital content recipient identity code correspondence has the authority of downloading this digital content, if, execution in step A24 then, otherwise, execution in step A25;
A24. judge that the copyright testing result is that copyright detects successfully, and the download time of this digital content is added 1, finish detection of this DRM copyright and download time seniority among brothers and sisters statistics flow process;
A25. judge that the copyright testing result is that copyright detects failure, finish detection of this DRM copyright and download time seniority among brothers and sisters statistics flow process.
5. method as claimed in claim 4 is characterized in that, described steps A 25 is judging that the copyright testing result is that this method further comprised: determine failure cause, and failure cause is carried in the copyright testing result after copyright detected failure;
When then in described digital content, detecting the failure of content unique identification, determine that failure cause is: do not have the content unique identification;
When detecting the record failure of content unique identification correspondence in the DRM database, determine that failure cause is: digital content is not protected by copyright;
When the digital content recipient haves no right to download described digital content, determine that failure cause is: have no right to download.
6. method as claimed in claim 5, it is characterized in that, in the steps A 3 store-and-forward unit to the digital content recipient indicate can't provide download after, this method further comprises: store-and-forward unit indicates the reason that download can't be provided according to the failure cause that carries in the copyright testing result to the digital content recipient.
7. as any described method of claim 2 to 6, it is characterized in that described digital content provider is: service supplier SP; Digital content recipient is: the user.
8. the method for claim 1 is characterized in that, a side who has the right to call is SP, then describedly may further comprise the steps by the method for obtaining described statistics alternately with the DRM system:
C11.SP sends the digital content ranking data request of obtaining that carries this SP service code to the DRM system;
The C12.DRM system retrieves qualified digital content ranking data, and returns to SP according to the received digital content ranking data request of obtaining in self database;
C13.SP generates the digital content ranking list of this SP according to the digital content ranking data that receives.
9. the method for claim 1 is characterized in that, a side who has the right to call is an operator, then describedly may further comprise the steps by the method for obtaining described statistics alternately with the DRM system:
C21. operator sends the digital content ranking data request of obtaining that carries the condition of obtaining to the DRM system;
The C22.DRM system is according to the digital content ranking data request of obtaining that receives, and retrieval meets the digital content ranking data of the condition of obtaining in self database, and returns to operator;
C23. operator generates the digital content ranking list that self needs according to the digital content ranking data that receives.
10. digital content propagation method based on digital copyright management DRM system, it is characterized in that, the DRM system expands self preserving content uniquely identified database in advance, promptly except the user profile of content unique identification and corresponding copyright rule, contents attribute, service supplier SP, the user profile that allows download and permission forwarding, also comprise the content unique identification the hop count of corresponding digital content, and when the DRM system is digital content distribution content unique identification, the hop count of described digital content is designated as 0; Digital content provider carries out copyright by store-and-forward unit request DRM system to the digital content of desiring to spread through the internet and detects and record; The DRM system carry out that copyright detects and record in, the hop count of this digital content is added up so that a side who has the right to call is when needing to extract the digital content ranking data, by with the DRM system obtain described statistics alternately; The DRM system detects successful digital content by store-and-forward unit with copyright and is handed down to the digital content recipient.
11. method as claimed in claim 10 is characterized in that, described digital content provider by the method that store-and-forward unit request DRM system carries out copyright detection and record to the digital content of desiring to spread through the internet is:
The digital content that digital content provider will transmit is submitted to store-and-forward unit together with the code of self; Store-and-forward unit sends to the DRM system with digital content and the digital content provider identity code that receives again, and request is carried out copyright to this digital content and detected.
12. method as claimed in claim 11 is characterized in that, described DRM system carry out that copyright detects and record in, the method that the hop count of this digital content is added up comprises:
The B2.DRM system carries out the content uniquely identified to the digital content of being received and detects, and the DRM database is carried out the detection of the record of this content unique identification correspondence, and the detection of digital content providers being transmitted authority; And judge whether all to detect success, if, judge that then the copyright testing result is that copyright detects successfully, and the hop count of this digital content is added 1, otherwise, judge that the copyright testing result is that copyright detects failure;
Described DRM system detects the method that successful digital content is handed down to the digital content recipient by store-and-forward unit with copyright:
The B3.DRM system returns the copyright testing result to store-and-forward unit, and store-and-forward unit judges whether the copyright testing result that receives is that copyright detects successfully, if then store-and-forward unit is handed down to the digital content recipient with digital content; Otherwise store-and-forward unit indicates and can't transmit to the digital content provider according to the copyright testing result.
13. method as claimed in claim 12 is characterized in that, described step B2 may further comprise the steps:
The B21.DRM system detects the content unique identification in the digital content of being received, and judges whether to detect this content unique identification, if, execution in step B22 then, otherwise, execution in step B25;
The B22.DRM system is that index is retrieved with this content unique identification in self database, and judges whether to retrieve the record of this content unique identification correspondence, if, execution in step B23 then, otherwise, execution in step B25;
B23. the user profile of transmitting according to the permission that comprises in the digital content provider's identity code that receives and the pairing record of this content unique identification, whether the digital content provider who judges this digital content provider code correspondence has the authority of transmitting this digital content, if, execution in step B24 then; Otherwise, execution in step B25;
B24. judge that the copyright testing result is that copyright detects successfully, and the hop count of this digital content is added 1, finish detection of this DRM copyright and hop count seniority among brothers and sisters statistics flow process;
B25. judge that the copyright testing result is that copyright detects failure, finish detection of this DRM copyright and hop count seniority among brothers and sisters statistics flow process.
14. method as claimed in claim 13 is characterized in that, described step B25 is judging that the copyright testing result is that this method further comprised: determine failure cause, and failure cause is carried in the copyright testing result after copyright detected failure;
When then in described digital content, detecting the failure of content unique identification, determine that failure cause is: do not have the content unique identification;
When detecting the record failure of content unique identification correspondence in the DRM database, determine that failure cause is: digital content is not protected by copyright;
When the digital content provider haves no right to transmit described digital content, determine that failure cause is: have no right to transmit.
15. method as claimed in claim 14, it is characterized in that, among the step B3 store-and-forward unit to the digital content provider indicate can't transmit after, this method further comprises: store-and-forward unit indicates the reason that can't transmit according to the failure cause that carries in the copyright testing result to the digital content provider.
16. method as claimed in claim 10 is characterized in that, a side who has the right to call is SP, then describedly may further comprise the steps by the method for obtaining described statistics alternately with the DRM system:
C11.SP sends the digital content ranking data request of obtaining that carries this SP service code to the DRM system;
The C12.DRM system retrieves qualified digital content ranking data, and returns to SP according to the received digital content ranking data request of obtaining in self database;
C13.SP generates the digital content ranking list of this SP according to the digital content ranking data that receives.
17. method as claimed in claim 10 is characterized in that, a side who has the right to call is an operator, then describedly may further comprise the steps by the method for obtaining described statistics alternately with the DRM system:
C21. operator sends the digital content ranking data request of obtaining that carries the condition of obtaining to the DRM system;
The C22.DRM system is according to the digital content ranking data request of obtaining that receives, and retrieval meets the digital content ranking data of the condition of obtaining in self database, and returns to operator;
C23. operator generates the digital content ranking list that self needs according to the digital content ranking data that receives.
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| CN101753607B (en) * | 2008-12-04 | 2013-07-03 | 联想(北京)有限公司 | Working device and method for server |
| CN102314567B (en) * | 2010-07-09 | 2014-05-07 | 中国移动通信有限公司 | Digital content use and control method and client-side equipment |
| US20130097089A1 (en) * | 2011-04-01 | 2013-04-18 | Robert Steele | System to identify multiple copyright infringements |
| CN103294935B (en) * | 2012-02-29 | 2016-03-09 | 北大方正集团有限公司 | A kind of control method of digital content read right, Apparatus and system |
| CN102750619B (en) * | 2012-07-03 | 2015-08-19 | 厦门简帛信息科技有限公司 | Digital resource publishing distribution system and method |
| CN106096343B (en) * | 2016-05-27 | 2019-09-13 | 腾讯科技（深圳）有限公司 | Message access control method and equipment |
| CN109299164B (en) * | 2018-09-03 | 2024-05-17 | 中国平安人寿保险股份有限公司 | Data query method, computer readable storage medium and terminal equipment |
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