CN101405719B

CN101405719B - Method for moving and sharing digital contents and rights object and device thereof

Info

Publication number: CN101405719B
Application number: CN2007800092656A
Authority: CN
Inventors: 李承帝; 金兑炫; 秋渊成; 希兰·库玛·凯沙瓦穆斯
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2006-03-17
Filing date: 2007-03-16
Publication date: 2012-07-18
Anticipated expiration: 2027-03-16
Also published as: CN101405719A; KR20070094567A; KR101356493B1

Abstract

Device and method for moving digital rights management (DRM) contents and rights object (RO). The method comprises joining a plurality of devices to a specific domain (group) by a user, and moving a domain RO through a multimedia card such as a wire/wireless physical media (e.g., a secure memory card) such that the domain RO may be shared therebetween; and reproducing DRM contents for the domain RO by the devices that have joined the domain by using the domain RO.

Description

Move and the method and the equipment thereof of shared digital content and right objects

Technical field

The present invention relates to digital copyright management (DRM:Digital Rights Management), in particular, relate to the method and the equipment thereof of mobile and shared DRM content and right objects (RO:Rights Object).

Background technology

On the whole; Digital copyright management (DRM) is the technology that a kind of right objects to digital content (RO) is protected and RO is carried out system management, and this technology provides and prevented the bootlegging content, obtains RO, the protection and the Managed Solution of generation/mobile content and consumption RO and content.

Fig. 1 is the Organization Chart that illustrates according to the DRM system of prior art.

As shown in the figure, the DRM system is to being controlled to content user issue, that only consume in the authority at RO by content supplier.Content supplier is and the corresponding entity of content release center (CI:ContentIssuer) or copyright issue center (RI:Rights Issuer).

CI issue is by the content (hereinafter be referred to as DRM content) of specific encryption method protection with the user capture that prevents not have access rights, and the required right objects (RO) of RI issue consumption DRM content.

The DRM agency is installed receiving DRM content and RO from CI or RI at the equipment place, and through analyzing consumption that " licence (License) " that comprise among the RO comes the control DRM content at the corresponding device place.Licence is made up of " permission (Permission) " and " restriction (Constraint) ".

Yet there is following demand in DRM technology of the prior art.

User with a plurality of equipment hopes the shared DRM content in each equipment place in a plurality of equipment.

In addition, the user with a plurality of equipment hopes to set up specific group or territory, in this territory, to share the RO of DRM content and DRM content.

In addition, must move (transmission) DRM content and RO through the wire/wireless physical medium between each equipment, to share.

Summary of the invention

Therefore, the purpose of this invention is to provide a kind of method that between a plurality of equipment, moves the right objects (RO) of (transmission) digital copyright management (DRM) content and DRM content through physical medium.

In order to realize these purposes, a kind of method that in the DRM system, moves RO is provided, comprising: the user joins first equipment and one or more second equipment in the special domain; Said first equipment is issued center (RI) from copyright and is received the first information relevant with territory RO; Said first equipment moves the said first information to the 3rd equipment; And said the 3rd equipment moves the said first information to said second equipment.

Preferably, this method comprises that also said first equipment is from said RI acceptance domain RO and one or more territory content.

The step of sending the first information to the 3rd equipment is included in said first equipment before said the 3rd equipment moves the said first information, by said the 3rd equipment said first equipment is carried out authentication.

The step of sending the first information to second equipment is included in said the 3rd equipment before said second equipment moves the said first information, by said the 3rd equipment said second equipment is carried out authentication.

The step that said first equipment and one or more second equipment are joined in the said special domain comprises: said user registers said first equipment and said one or more second equipment to said RI; Said first equipment receives the domain list that is provided by said RI; Said first equipment is selected said special domain in said domain list; And said first equipment and said one or more second equipment joined in the said special domain.

In order to realize these purposes, a kind of method of in the DRM system, sharing RO is provided, this method may further comprise the steps: first equipment sends and its relevant first information of territory RO that has to the 3rd equipment; The user is said the 3rd equipment and said first device separates, then with said the 3rd equipment said second equipment of packing into; Said second equipment receives the said first information from said the 3rd equipment; And the said first information of said second equipment utilization is decoded to territory RO, and utilizes decoded territory RO to consume the DRM content.

In order to realize these purposes, a kind of equipment that in the DRM system, moves RO also is provided, this equipment comprises: the socket of assembling and dismounting multimedia entity; Transceiver, its one or more signal of transmitting-receiving is registered to issue center (RI) through the visit copyright, and receives the domain list that said RI provides; The display that shows said domain list; The DRM agency, its processing signals joins in the special domain of from said domain list, being selected by this user with one or more equipment with the user; Storer, it stores territory environment (domain context) and territory RO that said RI provides; And processor, its processing signals is consumed the DRM content to utilize said territory environment and said territory RO, and to the Multimedia Mobile that is installed in said spigot (transmit or send) said territory environment and said territory RO.

According to a further aspect in the invention, the method that in the DRM system, moves RO may further comprise the steps: first equipment moves the encryption key that (transmit or send) decodes to the RO of digital content to one or more second equipment; And said one or more second equipment is according to the RO of user's request to another second equipment mobile digital content.

According to another aspect of the invention, a kind of method that in the DRM system, moves RO may further comprise the steps: first equipment is to the RO of one or more second equipment mobile digital content; And between said first equipment and said second equipment, move the encryption key that (transmit or send) decodes to the RO of said digital content.

According to a further aspect in the invention; A kind of equipment that in the DRM system, moves RO is provided; This equipment comprises: the DRM agency; It issues the RO of center (RI) receiving digital contents from copyright, thereby moves encryption key or the corresponding RO that (transmit or send) decodes to the RO of said digital content to another equipment.

Description of drawings

Fig. 1 is the Organization Chart that DRM (digital copyright management) system according to prior art is shown;

Fig. 2 is the block diagram that the DRM system of first embodiment according to the present invention is shown;

Fig. 3 is the figure that is illustrated in the process of the RO of mobile digital content in the DRM system of second embodiment according to the present invention;

Fig. 4 is illustrated in the renewal of the RO of mobile digital content in the DRM system of the 3rd embodiment according to the present invention and the figure of verification process;

Fig. 5 is the figure that is illustrated in the process of the RO of mobile digital content in the DRM system of the 4th embodiment according to the present invention;

Fig. 6 is the figure that is illustrated in according to the process of the RO of mobile digital content in the DRM system of fifth embodiment of the invention;

Fig. 7 is the figure that is illustrated in according to the process of the RO of mobile digital content in the DRM system of sixth embodiment of the invention;

Fig. 8 illustrates through utilizing to come the process flow diagram of the method for mobile domains RO according to the smart card of seventh embodiment of the invention;

Fig. 9 is the XML pattern and the figure that is included in the parameter in this message that illustrates according to adding of the present invention territory request message;

Figure 10 is the XML pattern and the figure that is included in the parameter in this message that illustrates according to adding domain response message of the present invention;

Figure 11 is the figure that is illustrated in according to moving the process of RO in the DRM system of eighth embodiment of the invention; And

Figure 12 for schematically illustrated according to the perhaps block diagram of the equipment of RO that is used in the mobile digital of the present invention.

Embodiment

Now will be in detail with reference to preferred implementation of the present invention, its example shown in the drawings.

The present invention is applied to use digital copyright management (DRM) system and the DRM equipment of digital publishing rights.Yet the present invention also can be applicable to comprise all communications fields of the wire/wireless communication that DRM is special-purpose.

First conception of the present invention is that the user joins a plurality of equipment (terminal) in the special domain (group); And a plurality of equipment come mobile domains right objects (RO) through the multimedia card such as wire/wireless physical medium (for example safe memory card), with shared domain RO between a plurality of equipment.Second conception of the present invention is the DRM content that a plurality of equipment utilizations territory RO implements (consumption or use or broadcast) territory RO.The present invention also provide a kind of between equipment (for example, terminal) RO of mobile digital content or the instant authentication method of domain key.

To the technical term that use among the present invention be described below.

Terminal of the present invention is called equipment, and the terminal comprises all types of terminals of consumption digital content.Promptly; Equipment of the present invention comprises mobile communication terminal (for example, user equipment (UE), mobile phone, cell phone, DMB phone, DVB-H phone, PDA and PTT), DTV, GPS navigation appearance, portable game machine, MP3 and other household electrical appliance that use digital content.Therefore in the present invention, term " terminal " is identical with term " equipment ".Equipment of the present invention comprises communication module, Web/WAP browser, DRM agency, media renderer and media library and storer.

The set of domain representation equipment perhaps has the group of one or more equipment.The territory is the object by copyright issue center (RI:Rights Issuer) or territory mechanism (DA:domain authority) management, and the territory has corresponding domain key.Domain key is used for encoding and/or decoded domain RO.Territory RO is issued by RI, and comprises the RO by the DRM content of domain key coding.Encryption key through being included among the RO of territory is decoded to the DRM content, can use the DRM content so that have the user of domain key.Therefore, the equipment (that is, each DRM agency of equipment) that only joins special domain can utilize domain key to come decoded domain RO, and can utilize decoded territory RO to implement the DRM content.The DRM agency is installed on the particular device to add and/or leaving domain.The DRM agency also moves to another DRM agency in the territory through the wire/wireless medium with territory RO.

The RO of DRM content is divided into state RO is arranged (Stateful RO) and stateless RO (StatelessRO).Stateless RO is the RO that equipment is not managed status information (State Information).State RO is arranged is the equipment control status information accurately to utilize permission and the RO of restriction in the RO.Restriction by state information management comprises " at interval ", " counting ", " timing ", " accumulation " etc.

Status information is indicated the available quantity of RO, and one has status information of state RO management.Can wait supervisor status information through modes such as " timing ", " countings " or through modes such as " residual count ", " residue at interval ".

The DRM content can be by content release center (CI) or RI issue.

Connected device is represented and can be directly connected to the equipment on the RI through wired or wireless mode.On the contrary, connection device does not represent not to be directly connected to equipment on the RI, that do not have communication function.

Smart card is represented such as medium or the equipment of safe memory card (for example SIM or MMC) physical storage and/or agency to be installed on this smart card.

Hereinafter, will the method and apparatus that in DRM according to the present invention system, moves RO be elaborated.

Fig. 2 is the block diagram that the DRM system of first embodiment according to the present invention is shown.

As shown in the figure; The content release center (CI) 50 and one or more that comprise copyright issue center (RI) 40, the actual DRM content of issue of the RO of issue DRM content according to DRM of the present invention system receive the equipment (terminal) (for example, first equipment 10 among Fig. 2 and second equipment 30) of RO and DRM content respectively from RI 40 and CI 50.

First equipment 10 and second equipment 30 comprise communication module, Web/WAP browser, DRM agency, media renderer and media library and storer.

Each DRM agency who is installed in first equipment 10 and second equipment 30 receives RO and DRM contents from RI 40 or CI 50, and through the consumption that the DRM content is controlled in permission and/or the restriction analyzed in the RO, perhaps RO is upgraded or mobile.

DRM content and/or RO are stored among the DRM agency in first equipment 10, perhaps are stored among the DRM agency of physical medium (not shown) (for example, smart card).Correspondingly, the user of first equipment 10 can move key (for example, domain key) or the RO that decodes in order to the RO to the DRM content through physical medium to second equipment 30.

Yet the RO of DRM content might not be movably.The user of first equipment 10 must obtain permission (for example, the mobile permission of RO) from RI 40 or CI 50, RO is moved to the user of second equipment 30.In addition, when having consumed the RO of DRM content fully, the user of first equipment 10 can buy new RO from RI 40 or CI 50, perhaps can upgrade RO to RI 40 requests.

In case through buying or upgrading the mobile permission that RO has obtained the DRM content, then the user of first equipment 10 can move the user to second equipment 30 with its RO.

Fig. 3 is the figure that is illustrated in the process of the RO of mobile digital content in the DRM system of second embodiment according to the present invention.

With reference to Fig. 3, user A has bought the RO of specific DRM content.

Then, when user A will be when user B moves the RO of specific DRM content, user A moves RO (S10) to device request.

Whether the equipment inspection user A that receives request has the permission (S11) that RO is moved to another user.

As check result, if user A has permission, then this equipment is issued center (shown by dashed lines) to the RO that user B moves specific DRM content via copyright, perhaps directly moves RO (S12) to user B.

Fig. 4 is illustrated in the renewal of the RO of mobile digital content in the DRM system of the 3rd embodiment according to the present invention and the figure of verification process.

As shown in Figure 4, when user A will be when user B moves the RO of DRM content, user A moves RO (S20) to the DRM of equipment proxy requests.

Whether the equipment inspection user A that receives request has the permission (S21) of mobile RO.

As check result, if user A does not have permission, then whether environment inquiry user A hopes the (not shown) that secures permission.If user A hopes to secure permission, then the inlet of device access RI (portal) is with secure permission (S22).This access process is to be carried out according to DRM agency's request by the Web/WAP browser.Here, equipment utilization is stored in the inlet that DCF RL URL or RL URL in the RI environment visit RI.RI provides link to be used to upgrade the triggering (S23) of RO with download on inlet.

When equipment when RI sends the RO update inquiry information (S24), RI sends RO response message (S25) authorizing to user A when moving permission to this equipment.And when RI did not authorize mobile permission to user A, RI sent error message (error message) to this equipment.

When RI authorized mobile permission to user A, user A was to the required expense of inlet payment of RI, and the additional permissions of selection, upgrades RO (S26) thus.

User A has the permission of mobile RO through the RO after upgrading, and equipment moves to user B via copyright issue center with the RO of user A, and perhaps direct RO with user A moves to user B (S28).

Like Fig. 2 to shown in Figure 4, to the RO that moves and do not mean that simple mobile digital content of the RO of digital content.That is, during the mobile digital content, the RO between the member of territory moves and not only comprises the simple RO of moving, but also comprises the key that mobile (transmit or send) decodes to RO after subscriber equipment is generating the territory.

Fig. 5 is the figure that is illustrated in the process of the RO of mobile digital content in the DRM system of the 4th embodiment according to the present invention.Process among Fig. 5 and the process something in common among Fig. 3 are: at first encryption key is transferred to the territory member to share, then through the wire/wireless physical medium RO is moved to the territory member.

With reference to Fig. 5, subscriber equipment A is as territory mechanism, and management is as territory member's subscriber equipment B and subscriber equipment C.Device A can be the RI among Fig. 2, and equipment B and equipment C can be respectively the terminals.

Territory mechanism (device A) moves to equipment B and equipment C to share with domain key.Here, domain key is used for territory RO is decoded.

Then, when device A moved to equipment B or equipment C through wire/wireless physical medium (entity) with territory RO, its domain key of each equipment utilization read corresponding territory RO, thus the digital content that consumption is hoped.Here, each equipment is not stored received territory RO.

Preferably; Physical storage medium (entity) is a multimedia card, and comprises smart card, subscriber identification module (UIM:User Identity Module) card (the perhaps subscriber's identification module under the GSM situation (SIM:Subscriber Identity Module) card), safe mmc card and various storage card.Physical storage medium comprises microprocessor and memory device, thus processing command and store a certain amount of data.

Fig. 6 is the figure that is illustrated in according to the process of the RO of mobile digital content in the DRM system of fifth embodiment of the invention.

With reference to Fig. 6, at first RO is moved to each equipment, so that share, then encryption key is moved to each equipment through the wire/wireless physical medium.

Device A (territory mechanism) moves to equipment B and equipment C to share with territory RO.Through domain key territory RO is encrypted.

When device A was passed through the wire/wireless physical medium to equipment B or equipment C territory mobile cryptographic key, each equipment utilization domain key read territory RO, thus the digital content of the consumption expectation.Here, each equipment is not stored the domain key that receives.When between equipment, transmitting domain key, domain key is sent to the equipment cancellation of another equipment or deletes this domain key.

Fig. 7 is the figure that is illustrated in according to the process of the RO of mobile digital content in the DRM system of sixth embodiment of the invention.The 6th embodiment among Fig. 7 is more more concrete than the realization of the 5th embodiment among Fig. 6.

With reference to Fig. 7, suppose that specific user's (hereinafter, being referred to as user A) has two DRM equipment (that is, first equipment 10 and second equipment 30).First equipment 10 is the connected device (for example, mobile communication terminal) with communication function, and second equipment 30 is not for having the not connection device (for example, MP3 player) of communication function.Suppose that user A has multimedia entity (for example, smart card) 20, this multimedia entity is for can be through being inserted into the physical medium that first equipment 10 or second equipment 30 are consumed.

As shown in Figure 7, user A (not shown among Fig. 2) with the equipment (being mobile phone 10 or MP3 player 30) of he or herself join by RI40 generate and the special domain (that is territory A60) of management in (S1).Here, first equipment 10 is from RI acceptance domain key.Can domain key be moved to first equipment 10 from RI40 through territory environment (domaincontext).This territory environment is included in smart card 20 places RO required information (for example domain key, area identifier, expired time etc.) in territory is installed.

User A is through first equipment, 10 visit RI and/or CI, thus the territory RO (S2) of reception DRM content and DRM content.

User A attempts sharing DRM content and/or the territory RO that first equipment 10 is had with second equipment 30 that adds territory A60.User A can utilize the smart card 20 and first equipment 10 (mobile communication terminal) and second equipment (MP3 player) to share DRM content and/or territory RO.That is, user A moves to smart card 20 and is present in territory environment (S3) on first equipment 10, that be used to install territory RO, and smart card 20 is installed on second equipment 30 (S4).Can DRM content and/or territory RO directly be moved to second equipment 30 from first equipment 10 through the wire/wireless channel.Can DRM content and/or territory RO be moved to smart card 20 from first equipment 10, in the storer that is stored in smart card 20, and then move to second equipment 30 from smart card 20.

User A can be through second equipment 30, utilize the territory environment that is stored in the smart card 20 that territory RO is installed, and then utilizes territory RO to implement the DRM content.

When between first equipment 10 and the smart card 20 and at smart card 20 and second equipment, 30 mobile domains environment the time, carry out authentication processing respectively.

Hereinafter, will explain in more detail the signal flow between the equipment in the DRM system among Fig. 7 with reference to Fig. 8.

Fig. 8 illustrates utilization comes the method for mobile domains RO according to the smart card of seventh embodiment of the invention process flow diagram.Content supplier (CP:content provider) can be RI or CI, and RI can be the inlet of CP.

Suppose that user A has two DRM equipment (that is, first equipment 10 and second equipment 30).First equipment 10 is the connected device (for example, mobile communication terminal) with communication function, and second equipment 30 is not for having the not connection device (for example, MP3 player) of communication function.Suppose that user A is can be through being inserted into the physical medium that first equipment 10 and second equipment 30 are consumed, and have multimedia entity (for example smart card) 20.

User A utilizes first equipment 10 to visit RI 40 (S31), and to RI 40 registration first equipment 10 and second equipment 30 (S32).User A at first registers first equipment 10 to RI 40, and then to RI 40 registration second equipment 30 (not connection device).

User A joins in the special domain (for example territory A) (S33) with first equipment 10.This special domain is by one in a plurality of territories of RI 40 generations and management.

When RI 40 inquiry when second equipment 30 also adds among the territory A that access customer A registered as first equipment 10, user A joins second equipment (not connection device) among the A of territory.That is, 30: the second equipment of user A notice RI is his or her another equipment, and browses the territory content of downloading through first equipment 10 (S34).RI 40 moves the domain list (S35) that it generates and manage oneself to first equipment 10.Then, the user selects special domain (for example territory A) that second equipment will add (S36) from domain list.

RI 40 moves trigger messages (for example, adding the territory trigger messages) to first equipment 10, so that user A can join second equipment 30 among the selected territory A (S37) through first equipment 10.First equipment 10 receives and adds the territory trigger messages, then to RI 40 send with second equipment 30 join among the A of territory request message (for example, adding the territory request message) (S38).Fig. 9 shows the XML pattern (XML schema) that adds the territory request message and is included in the parameter in this message.As shown in Figure 9, this adding territory request message comprises one or more parameter.This adding territory request message comprises the parameter of one or more device id (for example, sending the ID of first equipment 10 that adds the territory request message and the ID that will add second equipment 30 of territory A).

RI 40 sends as to the response message (for example, adding domain response message) of the response that adds the territory request message (S39).Here, add the territory environment that domain response message comprises second equipment 30.This territory environment is included in smart card 20 places RO required information (for example domain key, area identifier, expired time etc.) in territory is installed.

Figure 10 shows the XML pattern that adds domain response message and is included in the parameter in this message.Shown in figure 10, this adding domain response message comprises one or more parameter (element).At first, " domainInfo " element of parameter is an identifier, and will generate this element as long as RI 40 has issued domain key for the equipment (that is, first equipment 10 or second equipment 30) that adds territory A.Here, through each PKI of first equipment 10 and second equipment domain key is encoded.Secondly, " deviceID " parameter of " domainInfo " element is to use the device identifier of domain key.Yet " deviceID " parameter is not indicated the ID of smart card 20.RI 40 sends the tabulation that interior " deviceID " parameter of " domainInfo " element means RI 40 known device ID, and each equipment with identical deviceID can use domain key exclusively, and any miscellaneous equipment then can not use the territory content.The fact that the device id parameter is not included in " domainInfo " element means that all equipment that belong to user A all can not use the territory content.The 3rd, " SRMStore " parameter is the attribute in " domainInfo " element.The DRM agency that the JoinDomain agreement is carried out in the indication of " SRMStore " parameter is stored in domain key in the smart card 20.

First equipment is stored in (S40) in the smart card 20 with the territory environment that receives.Smart card 20 is constructed to separate (separating) with first equipment 10, and smart card 20 is in the installment state with corresponding assembling (installation) portion (for example, slot) of first equipment 10.Smart card 20 comprises storage space and the dedicated proxies that can carry out authentication processing.Smart card 20 be first equipment 10 that can be assembled to second equipment 30 in and the medium that can separate with second equipment 30 with first equipment 10, and be referred to as secure removable media (SRM:secure removable media).The agency who is exclusively used in smart card 20 is called the SRM agency.Smart card 20 is a physical medium, and comprises subscriber identification module (UIM) card (the perhaps card of the subscriber's identification module (SIM) under the GSM situation), safe mmc card and various storage card.

In S40, between first equipment 10 and smart card 20, carry out authentication processing (S41).More particularly, between the SRM of the DRM of first equipment 10 agency and smart card 20 agency, carry out authentication processing.In this authentication processing, use by the indicated information of parameter in the territory environment that is included among the step S39.After this authentication processing, the SRM of smart card 20 agency moves to smart card 20 with the territory environment from first equipment 10.Through authentication processing (S41), the SRM of smart card 20 agency can confirm whether the DRM agency of first equipment 10 is genuine DRM agency.If in authentication processing (S41), confirming the DRM agency of first equipment 10 is not genuine DRM agency, then cancel authentication processing.Said genuine DRM agency can be qualified communication and provide the territory content and act on behalf of relevant agency with SRM.

After accomplishing authentication processing, user A utilizes first equipment 10 to visit RI 40, thereby the territory content (for example, particular music file) of selecting its expectation (S42), and downloads this territory content (S43).

Then, if user A hopes to consume this territory content (for example, particular music file), then it can move to second equipment 30 with the territory content from first equipment 10 through the wire/wireless medium.Here, can come mobile domains content (for example, particular music file) with ultradistribution (super-distribution) mode.User A can be to smart card 20 mobile domains contents and/or corresponding domain key (S44).

User A is installed to smart card 20 in second equipment 30 (that is MP3 player) (S45).Then, whether the SRM of smart card 20 agency carries out authentication processing, be the true equipment (S46) that has added territory A to check second equipment.If confirm that in step S46 second equipment 30 is the true equipment that has added territory A, then 30 search of second equipment are stored in territory environment and the territory content (S47) in the smart card 20.Be installed in (being assemblied in) second equipment 30 (being the MP3 player) last time at smart card 20, user A can consume territory content (S48) through second equipment 30.Yet when smart card 20 separated with second equipment 30, user A can't consume the territory content through second equipment 30 again.

Figure 11 is the figure that is illustrated in according to moving the process of RO in the DRM system of eighth embodiment of the invention.

With reference to Figure 11, suppose by the special domain (for example, territory A60) in a plurality of territories of RI40 definition and management to comprise N equipment (the first equipment 10-N equipment).N equipment 70 moves to the external unit 80 that does not belong to territory A60 with territory RO, breaks away from territory A60 then.

N equipment 70 moves to external unit 80 via smart card 20 (for example, secure removable media (SRM)) with its territory environment and territory RO.That is, N equipment 70 moves to smart card 20 with territory environment and territory RO, and then smart card 20 moves to external unit 80 with territory environment and territory RO.After carrying out authentication processing and having formed safe lane, come mobile domains environment and territory RO through safe lane.With with Fig. 8 in the identical mode of authentication processing (S41 and 46) carry out this authentication processing, and the authentication processing certificate of necessity is cancelled tabulation (CRL:Certificate Revocation List) management.Behind successfully mobile domains environment and territory RO, deletion territory environment and territory RO from mobile device (that is N equipment 70).Owing to from N equipment 70, deleted territory RO, therefore N equipment 70 can not be consumed the territory content again.The external unit 80 that has received territory environment and territory RO must utilize the information that is included among this territory environment and the territory RO to come to RI40 registration territory environment and territory RO.Here, territory A60 can be the territory by OMA DRM2.0 definition, or the user domain that in the home entertainment network field, defines.

The territory environment and the territory RO that are stored in the smart card 20 are not moved to external unit 80, but are installed in external unit 80 (for example being inserted in the installation portion (for example, socket)) with the state that is stored in the smart card 20.Can directly implement to be installed in territory environment and the territory RO on the external unit 80 through external unit 80.Because smart card 20 has territory RO, so smart card 20 has served as the main body of content of consumption.

Hereinafter, will describe structure and the operation that is used for the equipment of mobile digital content and RO according to the present invention with reference to Figure 12.

Equipment of the present invention (terminal) comprises through multimedia to another equipment mobile domains environment, territory RO or the hardware of DRM content between each equipment, to share.Equipment 100 of the present invention comprises the socket 101 that multimedia (for example, smart card) is installed with separable mode.Multimedia comprises smart card, subscriber identification module (UIM) card, subscriber's identification module (SIM) card, safe mmc card and various storage card.The form of socket 101 is decided according to multimedia form.

Equipment 100 of the present invention comprises that receiving and transmitting signal is to register and to receive the transceiver 102 of the domain list that RI provides through visit RI.

Equipment 100 of the present invention is included in through processor 106 and handles the display 103 that the back shows the domain list that moves to transceiver 102.

Equipment 100 of the present invention comprises DRM agency 104, and its processing signals joins by in the special domain of selecting the domain list of user on being presented at display 103 with one or more equipment with the user so that can be in this special domain shared domain RO.

Equipment 100 of the present invention comprises that storage is from the territory environment that RI receives and the storer 105 of territory RO and other DRM contents.

Equipment 100 of the present invention comprises processor 106, and its processing signals is consumed the DRM content to utilize territory environment and territory RO, and handles moving to the multimedia territory environment and the territory RO that are installed on the socket 101.Processor 106 can be called as controller.The detail operations of equipment 100 of the present invention can be applied to the above-mentioned parts of Fig. 2 in Figure 11 with structure.

It is obvious to those skilled in the art that parts that equipment 100 comprises that consumption DRM content is required and the parts among Figure 12, therefore omit its detailed description.

Clearly, those skilled in the art can modifications and variations of the present invention are under the situation that does not break away from the spirit or scope of the present invention.Therefore, the present invention is intended to contain these modifications of the present invention and the variation that falls in accompanying claims and the equivalency range thereof.

For example, smart card meter is shown in physical medium or the logical media or the equipment of mobile domains key between a plurality of equipment and/or territory content, and it is not limited to literal meaning.

A plurality of equipment (terminal) of on special domain, registering can be shared the DRM content.

In addition, can be through physical medium (for example, smart card) shared domain key and the territory content between a plurality of equipment that is called as SRM (secure removable media).

In addition, owing to have the user of a plurality of equipment can share DRM content and DRM content between a plurality of equipment RO, therefore can strengthen the consumption of digital RO.

Claims

One kind in digital copyright management (DRM) system from connected device to connection device mobile domains right objects not to share the method for said territory right objects by one or more equipment the special domain of joining, this method may further comprise the steps:

To copyright issue center (RI) registration first equipment and one or more second equipment, wherein said first equipment is the connected device with communication function, and said second equipment is not for having the not connection device of communication function;

Said first equipment is joined in the special domain, and said special domain is by one in a plurality of territories of said copyright issue center (RI) generation and management;

Said first equipment selects said special domain to add said second equipment from the domain list that receives from said copyright issue center (RI), and said copyright issue center (RI) generates and manage said domain list;

Said first equipment joins in the selected special domain said one or more second equipment to share said territory right objects;

Said first equipment receives the first information from said copyright issue center (RI); The said first information comprises and the relevant domain key of said territory right objects; The said first information comprises " domainInfo element "; And said " domainInfo element " be with to said first equipment that adds said special domain and the relevant information of said one or more second equipment issue domain key; Wherein said " domainInfo element " comprises each device id and the SRMStore parameter of said first equipment and said one or more second equipment; Said device id is meant that said first equipment and said one or more second equipment with this device id have added said special domain and therefore can use said domain key, and digital copyright management (DRM) agency of said SRMStore parameter indication execution JoinDomain agreement is stored in said domain key in the 3rd equipment;

Said first equipment stores the said first information in said the 3rd equipment into;

Said one or more second equipment receives the first information of being stored from said the 3rd equipment; And

The first information that said one or more second equipment utilization receives is decoded to said territory right objects, and utilizes decoded territory right objects to consume digital copyright management (DRM) content.
2. method according to claim 1, this method also comprise at least one from said copyright issue center (RI) acceptance domain content and territory right objects of said first equipment.
3. method according to claim 1; Wherein, Said first equipment comprises the step that the said first information stores in said the 3rd equipment: before said the 3rd equipment moves the said first information, by said the 3rd equipment said first equipment is carried out authentication at said first equipment.
4. method according to claim 1 wherein is included in said the 3rd equipment before said second equipment moves the said first information to the step that said second equipment moves the said first information, by said the 3rd equipment said second equipment is carried out authentication.
5. method according to claim 1, the wherein said first information are the territory environment.
6. method according to claim 1, the wherein said first information comprises the domain key that the territory right objects is decoded at least.
7. method according to claim 1, wherein said the 3rd equipment is the multimedia entity.
8. method according to claim 7, wherein said the 3rd equipment are secure removable media (SRM) or smart card.
9. method according to claim 1, this method also comprise by said second equipment and move the said first information to the 4th equipment, follow said second equipment and break away from said special domain.
10. method according to claim 9, this method also comprise at least one in said the 4th equipment mobile domains content and territory right objects of said second equipment.
11. method according to claim 1, wherein said the 3rd equipment are to carry out installed device with separable mode and said first equipment or said second equipment.