WO2008113959A1

WO2008113959A1 - Use of access rights to content

Info

Publication number: WO2008113959A1
Application number: PCT/FR2008/050318
Authority: WO
Inventors: Pascal Nourry; Jennifer Autier; Pierre Fevrier
Original assignee: France Telecom
Priority date: 2007-02-28
Filing date: 2008-02-26
Publication date: 2008-09-25

Abstract

The invention relates to the field of access to contents managed by access rights, and in particular to the use of access rights. The present invention proposes that the use of access rights to content is subordinated to the preliminary execution of an action. For example, a film writing access request will be satisfied by the use of the appropriate access right only right after the visualisation of the copyrights of said film, and a free access request only after visualising the commercials, while a pay access request does not require any preliminary action. The invention relates to an object RO for access rights to a content that comprises: a content identifier IdC; at least one access right to said content R; and for at least one of said at least one access rights R, a use rule P of said access right R that subordinates at least one use of said access right to the execution of at least one of the at least one identified actions (A1...AI) for said access right R depending on at least one predetermined criterion.

Description

Using access rights to content

The invention relates to the field of access to content managed by access rights and, particularly, the use of access rights.

Previously, the exchange of large content such as multimedia content (music, movies, etc.) was based on analog signals that degrade with each manipulation: copy, editing, transmission. Therefore, little attention was given to the management of rights related to operations (reading, copying, editing, transfer, etc.) on these content also called access rights to content.

The development of communication networks and, in particular, the Internet has made it possible and easy to exchange such content in a digital format (music, movies, games, etc.). Content databases have been created by publishers and distributors to facilitate the purchase of these contents. However, digital content does not degrade after repeated storage, copying, reading, printing, editing, or transmission: a management of access rights of use on these contents then became necessary.

The management of access rights on digital content (called Digital Rights Management or DRM) and conditional access systems (called Conditional Access System or CAS) were born from this need.

The management of the rights of access on digital contents proposes to control by technical measures of protection the use made of the digital contents. It provides, in particular, to limit or make impossible the transfer of works from one device to a means of storage (limitation of the copy) or to another device.

The architecture of digital rights management systems is based on the separation of content and associated access rights (called Rights Object or RO) and on the encryption of content. Only a terminal capable of managing access rights, for example a terminal comprising an access rights management agent, having the decryption key is capable of decrypting the content. This key is transmitted encrypted by the device for generating access rights to this terminal of the user. Thus, the terminal receives the access rights concerning the content, these access rights including the key. These access rights are received either at the same time as the content or on request to consult an encrypted content available to the terminal. Thus, access rights or DRM licenses are linked to the terminal for security reasons.

In the case of the management of the access rights on digital contents as in the case of the systems of conditional access, the right of access is forced to a terminal or a user for a content, a channel of transmission or a flow over a predetermined period of time, and a type of access. Thus, a user has or does not have access rights, for example, in reading to a specific movie. And, if he has the rights of access, if he requires access to this film, he accesses it.

However, the user of a versatile digital disc such as the commercially available pre-recorded DVD will generally be required to view the copyright prior to viewing the film. To do this, the copyright and the first chapter of the film are recorded in a single stream with a blocking of the functions of advance and fast return of the player during the viewing of the copyright does not allow a standard DVD player to zap the copyright.

Such a solution using stream construction also exists in content streaming. This solution could be used in CAS type systems but is rigid.

Today, there is no such conditioning of access to content in DRM type systems. In addition, this type of technique is not possible in the case of downloaded content unless generally restricting the features offered to the user in the software for reading protected content. The present invention proposes to condition the use of the rights of access to a content to the prior realization of an action. For example, a request for access to the writing of a film will be satisfied by the use of the right of access only after viewing the copyright of this film, a request for free access after viewing the advertisement while the same request for paid access will not require any prior action.

The invention also makes it possible, for the same right of access to a content, to modify the action to be performed prior to the use of the right of access to the content according to one or more of the following elements: access required, the applicant, the distributor, the time of year, etc.

Thus, if the user requires read access to a documentary at a time t when the sponsor is the company A, the invention makes it possible to condition the use of the read access right to this documentary, after verifying that the the user has this right of access, for example, to the viewing of an advertising spot of the company A. And, if the sponsor changes, the same user always having the right of read access to this documentary applicant, after change of sponsor, again, read access to documentary, the invention allows, then, to condition the use of the right of reading of the documentary to, for example, the visit of the website of the new sponsor.

An object of the invention relates to a method for generating rules for using rights of access to a content comprising an identification of at least one action for a right of access to a content according to at least one criterion predetermined so that a rule of use of said access right conditions at least one use of the right of access to an achievement of at least one of said at least one identified action.

In one variant of the invention, an object of the invention concerns a method of generating access rights objects to a content comprising:

• a generation of a right of access to a content and

A generation of a rule of use of said access right conditioning at least one use of said right of access to a performing at least one of the at least one action identified for said access right based on at least one predetermined criterion.

Another subject of the invention concerns a method of managing the use of rights of access to a content comprising a control of use of a right of access to a content according to a rule of use of said content right of access so that said usage rule conditions at least one use of said right of access to said content to an achievement of at least one of the at least one action identified for said access right based on at least a predetermined criterion.

Advantageously, said method for managing the use of access rights further comprises triggering said realization of said at least one of said at least one action prior to said usage control. Thus, the risk of a false positive control of the realization of an action prior to access to a content is zero since the process triggers the realization of the action.

Advantageously, this method of managing the use of access rights further comprises a control of said right of access to said content controlling the triggering of said realization and / or the control of use of said access right.

The invention also relates to a method of accessing a content comprising:

• a request to access a content,

• a generation of a right of access to that content and

A generation of a rule of use of said access right conditioning at least one use of said right of access to a realization of at least one of the at least one action identified for said access right according to less a predetermined criterion,

At least one transmission of said content, of said right of access to said content, of said rule of use of said right of access to said content,

A control of said right of access to said content, A control of use of said right of access to said content according to said rule of use of said access right, said usage control being controlled by said control of said access right,

Access to said content controlled by said usage control of said right of access to said content.

In a variant of the invention, an object of the invention relates to an object of rights of access to a content comprising:

An identifier of a content, at least one access right to said content and,

For at least one of said at least one access right, a rule for using said access right conditioning at least one use of said right of access to a realization of at least one of the at least one action identified for said access right; access right according to at least one predetermined criterion.

In a variant of the invention, an object of the invention relates to a content management object management object generator comprising:

Means for generating a right of access to a content; and means for generating a rule for using said access right conditioning at least one use of said right of access to a realization of at least one one of the at least one action identified for said access right based on at least one predetermined criterion.

In a variant of the invention, an object of the invention concerns a device for managing the use of rights of access to a content comprising:

• Means for managing rights of access to content according to a right of access to a content, and • Means of controlling the use of a right of access to a content according to a rule of use of said access right so that said usage rule conditions at least one use of said right of access to said content to an achievement of at least one of the at least one action identified for said right of access to function of at least one predetermined criterion, said usage control means being controlled by said rights management means.

In a variant of the invention, an object of the invention relates to a terminal comprising

Means for managing rights of access to content according to a right of access to a content, and

Means of controlling the use of a right of access to a content according to a rule of use of said access right so that said usage rule conditions at least one use of said access right auditing the content of at least one of the at least one action identified for said access right based on at least one predetermined criterion, said usage control means being controlled by said rights management means; access, and • access means to a content controlled by said means for controlling the use of said right of access to said content.

Another object of the invention relates to a computer program comprising program code instructions for executing the steps of the management method of using rights of access to a content mentioned above when said program is executed. on a computer.

The features and advantages of the invention will appear more clearly on reading the description, given by way of example, and related figures which represent:

FIG. 1, a content access system based on the management of access rights to the content implementing the invention,

FIGS. 2a and 2b, respectively, an example of means for generating an access right usage rule and a block diagram of the method for generating an access right usage rule according to the invention ,

FIG. 3, an access rights usage object generator according to a variant of the invention,

FIG. 4, an example of an object of use PO of a right of access R to a content C, FIG. 5, an exemplary object of law RO such as that used by the system according to FIG. 1,

FIGS. 6a and 6b, an example, respectively, of means and method for managing use of said access right R to content C according to the invention.

The present invention conditions the use of right of access to a content, such as a right to read a film used to read the film, to the achievement of an action prior to the use of this right, for example viewing the copyright of the content, viewing an advertisement, or connecting to a site associated with the content, etc. Thus, in an economic model of content financing and, in particular, of their copyright in advertising, the use of access rights to the content to access the content will be conditional upon the viewing / listening of advertising to the public. origin of financing.

FIG. 1 illustrates a content access system based on the management of content access rights, in particular of the DRM type, implementing the invention. A user U wishes to access a content C of an SP service provider on his terminal TP (for example, to play a movie C on a TP player or to write a music C with a recorder TP).

If the TP terminal has C content in a protected form

PC terminal dialogue with RA rights management agent to require a right of access req A. RA rights management agent fetches req _RA RO access rights from a rights server RI it transmits the access rights R in the form of rights object RO, for example license.

If the terminal TP does not have the content C, the terminal communicates with the content server CP to request the content req C. The content server CP transmits the content C in a protected form PC to the terminal

TP and dialog with the rights server Rl to require reqcp RO that it transmits the R access rights as a rights object RO to the rights management agent RA associated with the terminal TP. In a variant that is not illustrated, the content server CP transmits the protected content PC to the terminal TP and the request for content req C triggers a dialogue between the rights management agent RA and the rights server R1 to require reqRA RO to transmit rights of access R in the form of rights object RO to the agent of RA rights management associated with the terminal TP.

Rights generating means 1 of said rights server R1 produce at least one access right to said content C and means for generating usage rules 20 of said rights server R1 produce at least one use rule P of said right R. The rights object RO then has the access rights R and the rules of use P.

The rights management agent RA interprets the object of rights RO and possibly extracts the actions A to be made prior to access to the content C. For this, the rights management means 5 of said management agent RA rights check whether the request for access of the user U is authorized by the right of access R of the right object RO. If this is the case, the rights management means 5 control rights utilization control means 6. The control means 6 trigger the realization by means of execution 7 (in particular, a reader if it is to read an advertisement), then the verification of the realization of the action A identified by the rule of use P of the access right R by means of verification here integrated with the means of execution 7. Once the Action A performed, the verification means return to the control means 6, then transmitting a production information of A. Then, the control means 6 authorizes the use of the right of access R which results in the the right management agent RA gives the access Cmd to the content C to the terminal TP of the user U. Thus, the access means 8 of the terminal TP access the content C, if necessary by decrypting the content PC protected using the Cmd access command.

In one variant of the invention, the rights management agent RA comprises the execution means 7. In another variant of the invention, the terminal TP comprises the execution means 7. In a variant of the invention, the rights management agent RA comprises the verification means.

In a variant of the invention, the control means 6 comprise the verification means.

In a variant of the invention, the content server CP comprises the rights server R1. Thus, when requesting a content req C content server CP, it generates the rights object RO with at least one access rights R and, where appropriate, at least one rule of use P of the access right R associated with the requested content C by the user U, and transmits the protected content PC and the access rights object RO to the terminal TP of the user U.

In a variant not illustrated, the user U addresses a front-end device, in particular a web portal, which redirects the requests Req ^ RO and ReqC respectively to the right server R1 and the content server CP. In return, this front-end device retrieves respectively the rights object RO and the protected content PC and transmits them to the user U.

FIG. 2a illustrates an example of means for generating a rule for using said access right 20. The method implemented will be read in FIG. 2b. The usage rule generator 20 may be integrated with a rights server R 1 generating rights objects as shown in FIG. 1 or with a rights usage object generator 2 (illustrated in FIG. 3). . The user rules generator 20 receives a request for rules of use req P. Said request for rules req P is, in the example of application of FIG. 1, a request for rights object from req _RA RO the rights management agent RA or reqcp RO of the content server CP.

The use rule generator 20 comprises means for identifying actions 202. When the rules generator 20 receives a request for rules req P, the identification means 202 identifies IDENT at least one action A, according to predetermined criteria Crt. The predetermined criteria Crt are, in a variant of the invention, extracts EXTR at least in part from the request for rules req P using extraction means 201. These criteria Crt comprise, in particular, at least one element of the following list: identification of said content C for which a rule for the use of access rights is required, identification of said access right R for which a usage rule is required, identification of the user U requiring access to content C for which an access rights rule is required, identification of the terminal TP requiring access to content C for which a rule for the use of access rights is required, identification of the content server distributing the C content for which an access rights rule is required, an instance of an RA rights management agent, the instant of the request, etc.

The Ai shares are, in particular, stored in storage means, such as a stock base. Said storage means are in particular integrated storage means 203 to the user rule generator 20 or external to it (not shown). Thus, the identification means 202 dialogs with the external storage means to require at least one action req A and receive said action Ai (arrows dashed outward from the generator of usage rules 20) or internal 203 to search the action Ai (double direction arrow in dotted line).

In another variant of the invention (not shown), the actions Ai are generated as a function of the action request req A request generation means A according to predetermined directives and predefined data in means for generating data. For example, the action identification means 202 transmit, according to the user U and the theme of the content, a request for generating an action consisting of the action of the user. display of a personalized advertising range consisting of advertising spots from a predefined advertising base according to the theme of the content and the age of the user.

Thus, for a right of access R to a content C, the action identification means 20 return one or more actions {4 Li _{/ / eχ} * - The use rule P of the access right R to the content C comprises at least the identified actions or an indicator of the actions identified [A ₁ } _{i≈1 / / eK} -.

In a variant of the invention, the identification means are adapted to search for an action to be performed prior to the use of an access right R and give a zero result meaning that no action is identified. In this case, the use rule P does not indicate the prior action or actions conditioning the use of a right of access but that the use is not conditioned to the completion of an action.

In a variant of the invention, the usage rule generator 20 comprises a means of writing 204 of a rule P as a function of identified actions {A,}. The writing means of a rule 204 write W the rule P of the use of the access right R as a condition to check before using the right R such that: the realization of the identified action Ai; performing one of the identified actions {A,}; the realization of J (J <l) of the identified actions {A,}; carrying out all identified actions {A,}; the realization of at least all the actions of an imperative subset [A ₁ ) _{ι = ι L} κ _{/ 6} κ '_> A ^e (4) of the identified actions {A,} and of an action identified as A , not belonging to the imperative subset (For example on a set of actions involving the visualization of the copyright, the visualization of several advertising spots, including a spot concerning a sponsor of the content, the use of the right of access to the content will be conditioned to the realization of imperative actions like the visualization of the copyright and the spot of the sponsor and of another action: the visualization of a spot chosen by the user);

In a variant of the invention, the writing means 204 write the rule P as a triggering of an action realization before the use of the access right R. The action realization comprising: the realization of the identified action Ai; performing one of the identified actions {A,}; the realization of J (J <1) of the identified actions {A,}; the realization of all identified actions {Aj}; performing at least all the actions of an imperative subset [A ₁ ) _{ML i </ eK} -, A ₁ e [A _1] of the identified actions {Ai} and an identified action Aj not belonging to not to the imperative subset; etc.

In another variant of the invention, the use rule P is written as a trigger and an action completion check before the use of the access right R.

Fig. 3 illustrates a rights usage object generator 2 for the case where the usage rule generation P is not integrated in a rights object generator R1. Thus, a right-of-use object PO having the usage rules P is transmitted separately from the usage rights R. The rights-using object generator 2 transmits a usage object PO with a right of use. R access to a content C on request PO req: RA rights management agent or the CP content server: the PO request consists in particular of the request for rights req RO or req Rl, either directly from means of controlling the use of access rights 6, etc.

The rights utilization object generator 2 comprises a usage rules generator 20, such as, in particular, the usage rule generator 20 illustrated in FIG. 2. The request for rules P is supplied to the generator of the user. rules of use 20 from the use object request req PO, and the use object PO is provided from the rule P generated by the usage rule generator 20.

In one variant of the invention, extraction means 21 extract data from the request for use object PO PO such that, in particular, directly the request for rules req P or data from which the resources of extraction 21 generate the request for rules req P, and / or identification of the access right for which a usage rule is required, etc. In a variant of the invention, combining means 22 fabricate an object of use PO from generated rules P and, possibly, data extracted from the request for use object PO.

FIG. 4 shows an example of an object of use PO from an access right R to a content C. The object of use of access rights PO includes an identifier of a right of access to a content ld _R and a rule of use P comprising identified actions (Ai ... Ai) conditioning the use of said access right R to the realization of at least one of said identified actions (A ₁ - A,).

FIG. 5 shows an example of an object of right RO such as that used by the system illustrated by FIG. 1. The right object RO defines the access rights R to a content C. The object of right RO comprises to do this an identifier of the content C, a right of access R audit content. In the example illustrated in FIG. 5, the access right R is defined by its constraints S and its conditions of use here illustrated by the actions Ai ... Ai of which at least one must be carried out prior to use. R. The constraints S advantageously comprise constraints related to a state measured at the time of reading the right object RO: an identifier of the terminal of the user TP requiring access to the content C and / or a period of validity of the right of access R.

Thus, by using a rights expression language, in particular Open Digital Rights Language (ODRL) or in English, or XRML, the invention is integrated in an object of right RO using a writing of the following form:

<action_to_be_realized> </ constraint> </ rights>

Where <rights></rights> tags frame the definition of a "rights" R access right, <constraint></constraint> tags frame the definition constraints such as the constraints S of Figure 5 not provided here and a use rule P defined here by the action Ai to achieve <action_to_be_realized> prior to the use of the right "rights" R.

In the case where a right of play <play> (the right of play is a combined right of reading and reproduction, ie display for a video, broadcasting for a music, etc.) is conditioned to the play of the message of advertising Orange_Avertisement.mp4, the writing of the right object RO contains at least the following lines of instructions: <play>

<play> Orange_Avertisement.mp4 </ play> </ constraint> </ play>

In the case where a play right <play> is conditional on the realization of several actions, here the game of copyright, the game of a moral level (indication of prohibition to a category of the population), and the display of a web page (here the homepage of the Orange France website), the writing of the right object RO contains at least the following lines of instructions: <play>

<play> copyright. mp4 </ play> <play> morality_notice.mp4 </ play> <display> http://www.orange.fr </ display>

</ constraint> </ play>

Or again, as the following handwriting of an object of right RO illustrates, the rule of use of the right R can introduce Boolean operations on the actions and / or order the actions: <play>

<A0> V1 = 0 </ A0><A1> V2 = 0 </ A1> <A2> V1 = <play> copyright.mp4 </ play></A2><A3> V2 = <play> morality_notice.mp4 </ play></A3><A4> If [(VI = I]) and (V2 = 1)]

Then <display> http://www.orange.fr </ display> Else <display> "You must first look at the copyright and morality notices" </ display> </ constraint> </ play>

Thus, the actions AO to A4 are to be performed prior to the use of the right of play of the associated content (for example the viewing of a film) in the order indicated. Namely: triggering the successive realization of actions AO then A1 then A2 then A3 and A4. The action AO initializes a parameter V1 to 0. Then, the action A1 initializes a parameter V2 to 0. In a third time, the action A2 checks the set of the copyright notice copyright.mp4. If the copyright notice has been played in its entirety, the parameter V1 changes its value and goes to 1. In a third step, the action A3 checks the set of morality_notice.mp4. If the morality note has been played in its entirety, the parameter V2 changes its value and goes to 1. In a fifth step, the action A4 is carried out, that is to say if the two parameters V1 and V2 have a value equal to 1 which means that the copyright and morality notices were played in full then the A4 action is to display the homepage of the Orange France site to possibly make purchases around the content, otherwise, a message is posted indicating the obligation to view the copyright and morality notices.

As has already been proposed, the use of a right R can be conditional on the realization of a single action Ai among several {Ai} identified for said right R left at the discretion of the user U.

<A1><choiceV>"Pressthe" 1 "key if you want to go to the Orange site or the" 2 "key if you want to see some advertising before seeing the movie"</ choice V>< / A1><A2> If (V = I) Then <display> http://www.orange.fr </ display> Else <play> Orange_Avertisement.mp4 </ play></constraint></play>

Thus, the action A1 triggers the realization of choice V which includes the display of the message indicated either "Press the key" 1 "if you want to go to the site of Orange or the key" 2 "if you want to see the advertisement before seeing the film "in our example, the reception of a signal associated with an interaction of the user U by means of a man-machine interface of the terminal TP of the user U (for example, at the pressure on a key or in contact with a predefined area of a touch screen or a voice command, etc.), and the passage of the parameter V to a value associated with the received signal (in our example V = 1 when the user presses the "1" key on its interface).

Once the A1 action has been performed, the action A2 is triggered to know if the parameter V has a value equal to 1, ie if the user has chosen the prior access to the Orange site, the display of the page host Orange France and if not, the game advertising message Orange_Avertisement.mp4.

FIG. 6a illustrates an exemplary means for managing use of said access right R to the content C. Said utilization management means 6 are placed in interception of the access control Cmd _R given according to the right of access. access to the content C by access rights management means R to the content C such that the rights management means 5 illustrated in FIG.

In a variant of the invention, if the intercepted Cmd _R access command authorizes access, the access command Cmd _R activates, in addition, said utilization management means 6. Thus, if the management means rights 5 do not transmit access command or if the intercepted CmdR access command prohibits access, the usage management means 6 are not activated and, if necessary, directly transmit the access command CmdR at the terminal TP requests access (not shown).

In a variant of the invention (not shown), the usage management means 6 are active regardless of the information transported by the Cmd _R access control (authorization or prohibition). The utilization management means 6 comprise means for controlling the use 63 of a right of access to a content according to a usage rule P of said access right R to a content C of a kind that the rule of use P conditions the use of said right of access R to the realization of an action A or several actions (A ₁ ... Ai) (not shown).

In one variant of the invention, verification means 7 verify the implementation of VERIF action and transmit to the use control means 63 an information OK A for performing the action A according to the method illustrated in FIG. 6b . Thus, the control means 63 having received the information OK A for carrying out the action A command CNT the use of the access rights: authorization or prohibition OK / NOK.

In a variant of the invention, the usage control means 62 control a switch 64 for transmitting or stopping the access control Cmd _R TP terminal respectively following the completion or not of the action A.

In a variant of the invention, the means for managing use

6 furthermore comprise extraction means 61 making it possible to extract EXTR EXTR at least one action A from the usage rule P and to transmit it to the usage control means 63.

In one variant of the invention, the extraction means 61 transmit the action A to triggering means 62 triggering TRIG the embodiment EXE of the action A by means of execution.

In variants of the invention, the extraction means 61 have one or more functions taken in combination of the following list: the extraction means 61 make it possible to extract EXTR the actions (A ₁ ... Ai) of a usage rule P comprising several actions (Ai ... Ai) and transmitting them to the triggering means and / or the usage control means 63; the extraction means 61 make it possible to extract EXTR the actions (Ai ... Ai) and the order of the actions of a usage rule P comprising several ordered actions (Ai ... Ai) and to transmit them to the tripping means and / or means of controlling use 63; the extraction means 61 make it possible to extract EXTR from the Boolean logic and the actions (A ₁ ... Ai) from a usage rule P written with Boolean operators and comprising several actions (Ai ... Ai) , and to transmit them to the tripping means and / or the utilization control means 63.

In a variant of the invention, the triggering means 62 are able to read an order to trigger TRIG the received actions (A ₁ ... Ai) in the order received.

In a variant of the invention, the triggering means 62 are able to read a boolean logic and to receive values for triggering TRIG the received actions (A ₁ ... Ai) by following said logic as a function of said values.

In a variant of the invention, the use rule P comprises, for at least some actions A, an identifier of said actions. Thus, the execution means 7 receive the identifier of the action A to execute and will search in a database of actions (not shown) the action A to execute.

In a variant of the invention, once the action A has been carried out, verification means 7 transmit an embodiment information item OK A to the usage control means 63.

In a variant of the invention, the usage control means 63 interact with verification means 7 to require verification of the execution of the actions (possibly in the indicated order or logic) to the verification means 7 which transmit in return the realization information OK A. In a variant of the invention, the verification means 7 dialogue or include a brand detection tool that extracts a ticket in the video of an advertisement. The ticket being associated with an action A is verified by the verification means which transmit the information OK A for carrying out the action A.

In a variant of the invention, the utilization management means 6 are not in interception of the access control Cmd _R and refer to interception means (not shown in FIG. rights management RA a status indicating whether the use rule is satisfied or not allowing the interception means to, respectively, transmit or not the access command Cmd _R.

In a variant of the invention that is not illustrated, the usage management means 6 are external to the rights management agent RA.

Thus, the invention makes it possible to flexibly manage the use of a right of access subject to prior action.

It should be noted that the action prior to the use of a right to be carried out can make it possible to obtain an element essential to the use of said right. For example, reading an advertisement may make it possible to recover part or all of a key for decrypting the content. In this case, the rights management mechanism is sure that the previous action was performed before because without this action, the client could not recover part or all of this key.

In general, the various methods of the invention including, in particular, the methods for generating rules, methods for generating usage objects, methods for generating rights objects, methods for managing use, rights management methods and content access methods may be implemented by respective computer programs having program code instructions for executing the steps of the respective method when said program is executed on a computer .

Claims

A method for generating rules for using rights of access to a content, characterized in that said generation method comprises an identification (IDENT) of at least one action (A) for an access right (R) to a content (C) according to at least one predetermined criterion (Crt) so that a usage rule (P) of said access right (R) conditions at least one use of the access right (R ) an embodiment of at least one of said at least one action (A) identified.

2. A method for generating access objects to a content (C), characterized in that said generation method comprises:

• a generation of a right of access (R) to a content (C) and

A generation of a rule of use (P) of said right of access (R) conditioning at least one use of said right of access (R) to an achievement of at least one of the at least one action (A) identified for said access right (R) according to at least one predetermined criterion (Crt).

3. A method for managing the use of access rights to a content (C), characterized in that said management method includes a control (CNT) for using a right of access (R) to a content (C) according to a rule of use (P) of said access right (R) so that said usage rule (P) conditions at least one use of said access right (R) to said content ( C) an embodiment of at least one of the at least one action (A) identified for said access right (R) according to at least one predetermined criterion (Crt).

4. Management method of the use of access rights according to the preceding claim characterized in that said management method further comprises a trigger (TRIG) of said realization of said at least one of said at least one action (A) prior to said usage control (CNT).

5. Management method for the use of access rights according to any one of claims 3 or 4, characterized in that said management method further comprises a control of said right of access (R) to said content (C ) controlling the triggering (TRIG) of said realization and / or the control of use of said access right (R).

A method of accessing a content (C) characterized in that said access method comprises:

An access request req (C) to a content (C),

A generation of a right of access (R) to said content (C) and a generation of a usage rule (P) of said right of access (R) conditioning at least one use of said right of access (R) to an embodiment of at least one of the at least one action (A) identified for said access right (R) according to at least one predetermined criterion (Crt), • at least one transmission of said content ( C), of said right of access (R) to said content (C), of said rule of use (P) of said right of access (R) to said content (C),

A control of said right of access (R) to said content (C),

A control of use of said right of access (R) to said content (C) according to said rule of use (P) of said right of access (R), said usage control being controlled by said control of said right of access (R),

Access to said content (C) controlled by said control of use of said access right (R) to said content (C).

7. Object of access rights to a content characterized in that said management object comprises:

An identifier (idc) of a content (C),

At least one right of access (R) to said content (C) and,

For at least one of said at least one access right (R), a usage rule (P) of said access right (R) conditioning at least one use of said access right (R) to a realization of at least one of the at least one action (A) identified for said access right (R) according to at least one predetermined criterion (Crt).

8. Content access rights object generator (C) characterized in that said generator comprises:

Means for generating (1) a right of access (R) to a content (C) and

Means for generating (20) a usage rule (P) of said access right (R) conditioning at least one use of said access right (R) to an embodiment of at least one of the at least one of an action (A) identified for said access right (R) according to at least one criterion

(Crt) predetermined.

9. Device for managing the use of access rights to a content (C), characterized in that said management device comprises: • means for managing rights of access to a content (5) as a function of a right of access (R) to a content (C), and

Means for controlling the use of a right of access to a content (6) according to a rule of use (P) of said right of access (R) so that said rule of use ( P) conditions at least one use of said right of access (R) to said content (C) to an embodiment of at least one of the at least one action (A) identified for said access right (R) according to at least one predetermined criterion (Crt), said rights utilization control means (6) being controlled by said rights management means (5).

10. Terminal T (P) comprising

Means for managing rights of access to a content (5) according to a right of access (R) to a content (C), and

Means for controlling the use of a right of access to a content (6) according to a rule of use (P) of said right of access (R) so that said rule of use ( P) conditions at least one use of said right of access (R) to said content (C) to an embodiment of at least one of the at least one action (A) identified for said access right (R) according to at least one predetermined criterion (Crt), said rights utilization control means (6) being controlled by said rights management means (5), and

Content access means (8) controlled by said usage control means (6) for said access rights (R) to said content (C).

A computer program comprising program code instructions for executing the steps of the method according to any one of claims 3 to 5 when said program is executed on a computer.