CN101529462A - Method and system for providing a content subscription service - Google Patents
Method and system for providing a content subscription service Download PDFInfo
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- CN101529462A CN101529462A CN200680055786A CN200680055786A CN101529462A CN 101529462 A CN101529462 A CN 101529462A CN 200680055786 A CN200680055786 A CN 200680055786A CN 200680055786 A CN200680055786 A CN 200680055786A CN 101529462 A CN101529462 A CN 101529462A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2463/00—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00
- H04L2463/101—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00 applying security measures for digital rights management
Abstract
The present invention provides methods and system of distributing digital content governed by a digital license. The license has identification data for licensed content and is transmitted to a client device. A first and second items of content is transmitted to the client after receipt by the client device. The first and second items of content has first and second identification data respectively different from each other. The portion of the first and second items of content is in encrypted form. The encrypted portion of the first and second items of content is decrypted if the first and second identification data corresponds to the identification data for licensed content. The identification data for licensed content remains unchanged after the license is transmitted to the client.
Description
Technical field
The present invention relates to field of content delivery.More specifically, the present invention relates to distribute the field of the digital content of managing by digital license.
Background technology
The supplier of digital video content, audio content or other type content usually is loath for sending this content and do not carry out content protecting effectively via the Internet.Although have the technology that content is provided via the Internet for the content provider, yet do not have possessory mandate regardless of having, digital content is all duplicated in the nature of things easily.The Internet allows content to send from the owner, but same technology also allows to distribute at large content undelegated, that duplicate.
Digital copyright management (DRM) is the digital content protection model that progressively uses in recent years, is used as being used for the method for protected file distribution.DRM generally includes the complex set of technology and business prototype, to protect Digital Media or other data and to provide income to the content owner.
Many known DRM systems use memory device, the hard disk drive (HDD) assembly of computing machine for example, one group of unencrypted content (or other data) that its content owner provides.Content in the memory device resides in the trusted area of fire wall back.In trusted area, can be to content-encrypt resident on the memory device.Content server receives the content of encrypting and encapsulates the content of encrypting from memory device and is used for distribution.License server has the description of the authority and the service regeulations of the content that is associated with encryption, and related encryption key.(content server and license server are that content supplier (for example operating room) or service provider have or the part of the system of content supplier that controls sometimes.) playback equipment or client receive that the content of encrypting is used to show and receive the licence of specifying access rights from license server from content server.
Some DRM handles and is made up of following processing: the request content item, with this item of content key encryption, in the content digital license memory contents key, the distribution of contents of encryption sent to playback equipment, to playback equipment under the service regeulations of the digital license file that comprises content key and decrypt content files and appointment in digital license and plays it.
Yet because increasing content is delivered to the terminal user, these known DRM schemes may cause burden for interior perhaps service provider's server.For each request that each user carries out specific content item, need server to create " bag " (" package "), comprise the generating solution decryption key, generate content licenses and encrypted content itself.
For the distribution that comprises commercial reservation (subscription) model, use wherein known DRM scheme that content provider server has been caused increasing burden as each content item of subscriber's " packing ".If the content of user-accessible thus increased and may surpass the content of being paid along with the past of time situation, then may appear in advance for being used for licence payment of content subscription in the user.
Therefore, the method and system that improves of expecting a kind of protection mechanism is finished sending of the data protected or medium.
Summary of the invention
The method and system of distribution by the digital content of digital license management disclosed.According to some embodiment of the present invention, be convenient to licence and content are issued the user, so that after receiving licence, but the rights of using of a plurality of content items of a licence administrative client equipment reception.And licence has the data that are arranged in institute's licensed content identification field, and it remains unchanged after licence is received by the user.Therefore, embodiments of the invention can be used as the part of subscription business model, issue a licence to client thus, a plurality of content items can be sent to client thereafter and are used under the control of this licence by it.
In one aspect, the licence that will have the identification data that is used for institute's licensed content sends to client.The first content item sends to client after licence is received by client.The first content item has the first content identification data, and at least a portion of first content item is an encrypted form.Similarly, the second content item sends to client after licence is received by client.The second content item has the second content identification data that is different from the first content identification data.At least a portion of second content item is an encrypted form.
If the identification data of first content identification data licensed content corresponding to being used for is then deciphered the first content item.Similarly, if the identification data of second content identification data licensed content corresponding to being used for is then deciphered the second content item.After licence sent to client, the identification data that is used for institute's licensed content remained unchanged.
In another aspect, the first content item sends to client with the second content item at different time points, wherein about at least one day time interval of time point each interval.
In another aspect, licence has first sub-key, and the first content item has second sub-key, and the second content item has the 3rd sub-key.Use first and second sub-keys to generate first decruption key, and use the first and the 3rd sub-key to generate second decruption key.Use first decruption key deciphering first content item, and use second of second decruption key deciphering.
In another embodiment, will have identification data that is used for institute's licensed content and licence and send to client with play count data.The first content item sends to client after licence is received by client.At least a portion of first content item is an encrypted form.The first content item has the first content identification data and is made up of N discrete usable items of subcontent, and wherein N is the integer greater than 2.If the identification data of first content identification data licensed content corresponding to being used for is then deciphered at least a portion of P of N discrete usable items of subcontent, wherein P is the integer less than N, and wherein P corresponding to the play count data.The identification data and the play count data that are used for institute's licensed content remain unchanged after licence sends to client.In other embodiments, N discrete usable items of subcontent can be made up of N TV programme, perhaps can be made up of N musical works.
In another embodiment, provide the data structure that is used to send to client and is used to permit the first group of a plurality of content item that uses for client.In first group of a plurality of content item each has the first content identification field.Data structure comprises the first licence identification field, is used to specify each the identity in first group of a plurality of content item, and is used for preserving the first group id data of identity corresponding to each of first group of a plurality of content item.After data structure sent to the time point of client, the first licence identification field and a plurality of first content identification field were suitable for allowing when client receives first group of a plurality of content item client to use first group of a plurality of content item.The first group id data are suitable for remaining unchanged after data structure sends to client.
There is other aspect for the present invention.Therefore it should be understood that the front only is the short-summary of certain embodiments of the invention and aspect.Quote additional embodiments and aspect below.It is also understood that and to make many changes for disclosed embodiment, and do not depart from the spirit or scope of the present invention.Therefore the general introduction of front is not intended to limit the scope of the invention.But scope of the present invention should be determined by claims and equivalent thereof.
Description of drawings
According to the following description of the preferred embodiment of being done in conjunction with the accompanying drawings, these and/or others of the present invention and advantage will become obviously and be more readily understood, in the accompanying drawings:
Fig. 1 is the simplified block diagram that the content according to some embodiment that is used for distributing contents provides system;
Fig. 2 is the simplified block diagram that is used for the hardware environment of client device according to an embodiment of the invention;
Fig. 3 is the simplified block diagram that the content according to some embodiment that is used for distributing contents provides the part of system;
Fig. 4 is the reduced graph according to the digital license of certain embodiments of the invention;
Fig. 5 is the reduced graph according to a digital content items of certain embodiments of the invention;
Fig. 6 is the reduced graph according to another digital content items of certain embodiments of the invention;
Fig. 7 is the reduced graph according to another digital content items of certain embodiments of the invention;
Fig. 8 is the reduced graph according to another digital content items of certain embodiments of the invention;
Fig. 9 illustrates the figure of the appointment of identification field values according to an embodiment of the invention; With
Figure 10 is the simplified flow chart according to the method for the distributing contents of certain embodiments of the invention.
Embodiment
Now will be in detail with reference to embodiments of the invention, its example is shown in the drawings, wherein spreads all over the same label of accompanying drawing and refers to same element.Will be appreciated that, can use other embodiment, and can make the variation of structure and operation, and can not depart from scope of the present invention.
With reference to figure 1, show and use the example arrangement that content of the present invention provides system 10.Content provides system 10 to handle protected content, and it can comprise video data, voice data, view data, text data etc.Each of license server 12, content server 14 and accounting server 16 all is connected to client 18 and is connected to each other via network 20, and described network 20 for example is the Internet.In this example, only show a client 18, but it will be understood to those of skill in the art that any amount of client connectable to network 20.
Content server 14 provides content to client 18.License server 12 is authorized client 18 and is used the necessary licence 22 with subscription section 24 of content.Accounting server 16 is used for when to client 18 licensures 22 client 18 being chargeed.Although the embodiment that illustrates shows three servers of communicating by letter with client 18, will be understood that all these server capabilitys can be included in than three number of servers that illustrate still less or in the more service device here.
Fig. 2 shows the example arrangement of client 18.With reference to figure 2, central processing unit (CPU) 30 is carried out as the various processing operations that program guided storage in the ROM (read-only memory) (ROM) 32 or be loaded into random-access memory (ram) 36 from storage unit 34.RAM 36 also stores CPU30 and carries out various processing as required and operate necessary data etc.
CPU 30, ROM 32 and RAM 36 are via bus 38 interconnection.Bus 38 also connects the input equipment 40 be made up of for example keyboard and mouse, by the output device of for example forming 42, for example based on the storage unit 34 of hard disk drive with for example based on the communication facilities 44 of modulator-demodular unit, network interface unit (NIC) or other terminal adapter based on display unit and the loudspeaker of CRT or LCD.
ROM 32, RAM 36 and/or storage unit 34 storages are used for the function software of enabler client 18 operations.Impact damper 46 receive via network 20 and buffering from the continuous part of the fluidisation encrypted content of content server 14 (Fig. 1), use the required related decruption key (not shown) of deciphering institute's encrypted content simultaneously.The content of encrypting sends to demoder 48 with related decruption key.Demoder 48 uses decruption key deciphering and the decode content that is associated with content.
Communication facilities 44 is handled via network 20 executive communications, and the data that provide from CPU 30 are provided, and exports the data that receive from network 20 to CPU 30, RAM 36 and storage unit 34.Storage unit 34 utilizes CPU 30 transmission information with storage and deletion information.Communication facilities also with other client transmissions simulating signal or digital signal.
Bus 38 also is connected with driver 50 as required, on described driver 50, load for example disk, CD, magneto-optic disk or semiconductor memory, be used for any computer program that reads or other data from these recording mediums are installed in the storage unit 34.
Although not shown, content server 14, license server 12 and accounting server 16 (Fig. 1) also all are configured to have the computing machine of the configuration substantially the same with the configuration of the client 18 shown in Fig. 2.Although Fig. 2 shows a kind of configuration of client 18, yet alternative embodiment comprises the computer equipment of set-top box, personal computer, portable playback device or any other type.
Provide in the system 10 in content, licence and content server 12,14 send licence 22 and content (Fig. 1) to client 18.Require licence 22 to make client 18 can use protected content of encrypted form normally such as (promptly present, reproduce, duplicate, execution).
Use one or more encryption keys to dispose and encrypt each content item by service provider organization.Client 18 is deciphered based on license information and content and is reproduced the content item that is received.In certain embodiments, license information comprises rights of using, for example surpass it and just cannot use the cut-off date of content item, the number of times that can use content, the reproducible recording medium that arrives of content, for example the number of times of CD and the number of times that content can be fetched into portable set.
Fig. 3 shows being used for to content granted rights and the mechanism that is used to use content according to the embodiment of the invention.
With reference to figure 3, show license server 62, licence 64, client 66 and a plurality of content item.License server 62 is issued the merchant and is had or control and licence 64 issued and belong to user client 66 by credible.By client 66 downloads or reception and available be a plurality of content items, in this example, comprise:
(i) comprise five the main contents item 68a-68es of title for five series of TV programs of " Sex and the City-series 1 ", " Sex and the City-series 2 ", " Sex and the City-series 3 ", " Sex and the City-series 4 " and " Sex and the City-series 5 ";
(ii) comprise title and be " montage: Sex and the City-series 1 ", " montage: Sexand the City-series 2 ", " montage: Sex and the City-series 3 ", " montage: Sexand the City-series 4 " and five montages of " montage: Sex and the City-series 5 " or five clip content item 70a-70f of attached giving (bonus) track, wherein each is associated with the main contents item 68a-68f with similar title.
(iii) title is " video preview # 1 ", " video preview # 2 " etc., up to ten video preview content item 72a-72j of " video preview #10 ", comprise preview to the video content of ten films, other TV programme (can be other " Sex and the City " program or different TV programme) or other type; With
(iv) title is " audio preview # 1 ", " audio preview # 2 " etc., up to ten audio preview item 74a-74j of " audio preview #10 ", comprises ten musical workss, for example song or musical instrument, the perhaps preview of the audio content of other type.
Depend on condition and authority that licence 64 is authorized, the one or more of these content items can be used by client 66.Yet, if licence 64 not to one or more granted rights of these content items, they can not be used, although they can be received and storage by client 66 with unavailable form.
Fig. 4 is licence 64 and some data that comprises in licence 64 or the reduced representation of information according to an embodiment of the invention.With reference to figure 4, licence 64 has subscription section 76 and subkey section 78.Subkey section 78 comprises one or more sub-keys 80, and it can be used for generating one or more decruption keys as following further illustrated.Subscription section 76 comprises main contents identification field 82, preview identification field 86, montage identification field 84 and play count field 88.As following further illustrated, value or attribute data can be inserted in these fields, are used to control visit or the use of client 66 to some content item.
Fig. 5 is that title is the reduced representation of the main contents item 68a of " Sex and the City-series 1 ".With reference to figure 5, content item 68a has subscription section 102, subkey section 104 and content regions 106.Subkey section 104 comprises one or more sub-keys 108, and it can be by one or more related sub-key 80 (Fig. 4) combination that comprises in client 66 and the licence 64, uses algorithm to derive to be used for one or more decruption key (not shown) of content thus.Therefore, in order to strengthen the DRM security, client 66 must have licence 64 and content item 68a so that each from licence 64 and content item 68a is extracted sub-key, and it is used to derive one or more decruption keys then.
Subscription section 102 comprises main contents identification field 110, wherein can place corresponding to this main contents item the value or the attribute data of the identity of " Sex and the City-series 1 " 68a.Content regions 106 comprises ten discrete usable items of subcontent, in this example ten sections fragments or the program 112a-112j for forming series " Sex and the City-series 1 " 68a main contents.In this example, fragment 112a-112j is named as " serial 1-fragment 1 ", " serial 1-fragment 2 ", arrives " Series1-fragment 10 ".Although Fig. 5 shows content item " Sex and the City-series 1 " 68a, will be understood that remaining four main contents item 68b-68e (Fig. 3) have similar content structure.
And, will be understood that alternative embodiment comprises the main contents item of being not only television series, also comprise can be each other the main contents item of relevant (as in television series) or the TV Festival destination aggregation (mda) that can have nothing to do each other.The main contents item also can comprise film, documentary film, theatrical production, speech, music video, musical works and other audio frequency, visual or audio/visual content.These main contents items can comprise or can not comprise discrete available sub-content item.
Fig. 6 is that title is the attached reduced representation of giving track or clip content item 70a of " montage: Sex and the City-series 1 ".With reference to figure 6, clip content 70a has subscription section 114, subkey section 116 and clip content district 118.Subkey section 116 comprises sub-key 120, and it can use algorithm to derive the decruption key that is used for this clip content item 70a by related sub-key 80 (Fig. 4) combination that comprises in client 66 and the licence 64 thus.
Subscription section 114 comprises montage identification field 122, wherein can place value or attribute data corresponding to this clip content item " montage: Sex and the City-series 1 " 70a identity.Content regions 118 comprises attached track or the clip content 124 of giving of main contents item " the Sex and the City-series 1 " 68a that is associated with series.Although Fig. 6 shows clip content item " montage: Sex and the City-series 1 " 70a, will be understood that remaining four clip content item 70b-70e (Fig. 3) have similar content structure.
Fig. 7 is that title is the reduced representation of the audio preview content item 74a of " audio preview # 1 ".With reference to figure 7, content 74a has subscription section 126, subkey section 128 and preview content district 130.Subkey section 128 comprises sub-key 132, and it can use algorithm to derive the decruption key (not shown) that is used for this audio preview content 74a by related sub-key 80 (Fig. 4) combination that comprises in client 66 and the licence 64 thus.
Fig. 8 is that title is the reduced representation of the video preview content item 72a of " video preview # 1 ".With reference to figure 8, content item 72a has subscription section 138, subkey section 140 and preview content district 142.Subkey section 140 comprises sub-key 144, and it can be by related sub-key 80 (Fig. 4) combination that comprises in client 66 and the licence 64, uses algorithm to derive to be used for the decruption key (not shown) of this video preview content 72a thus.
Be the description of the operation of one embodiment of the invention below.Fig. 9 is the figure that the appointment of attribute in the identification field that is placed on main contents item 68a-68e, clip content item 70a-70e, audio preview content item 74a-74j and video preview content item 72a-72j (Fig. 3) or Value Data is shown according to this example.In other words, in this example, be used for title and comprise value or attribute " 1 " for the content identification field 110 (Fig. 5) of the main contents item 68a of " Sex and the City-series 1 ".Similarly, be used for title and comprise value or attribute " 2 " for the content identification field 110 of the main contents item 68b of " Sex and the City-series 2 ", or the like.Set up similarly value designated mode for clip content 70a-70e (Fig. 3).Yet video uses different tag systems with the audio preview content item.All video preview content field items 146 (Fig. 8) comprise identical value, are value " 2 " in this example.Similarly, all items of audio preview content fields 134 (Fig. 7) comprise value " 1 ".
Yet, will be understood that other embodiments of the invention can be used and comprise another numbering system or the identification field values of alphanumeric name or variable etc. or the different system of attribute.
Licence utilizes the identification field of the various content items so insert, is convenient to licence and content are presented to the user, so that can be managed rights of using by a plurality of content items of client 66 receptions receiving licence 64 after.And the data in the identification field 82,84,86,88 of licence 64 remain unchanged after licence 64 is received.Therefore, some embodiment of the present invention can be used as the part of subscription business model, thus a license awarding is given client, and after this a plurality of content item can send to this client and used under the control of this licence by it.Content item can the user of being separated by desired and content supplier allows about one hour, one day, a week or At All Other Times at interval later time point for example send to client, if user payment has also received value with main contents identification field 82 licence 64 for " 1 ", will only can to use title be the content item 68a of " Sex and the City-series 1 " to client 66 so.Yet all ten the fragment 112a-112j in the series 1 will be available.In other words, client 66 reads the main contents identification field data that find in the licence 64 and these data is compared with the content identification field data that finds in main contents item 68a itself.If data corresponding mutually (for example, in the scope of their couplings or the value of falling into etc.), client 66 can be used content by using the one or more decruption keys that utilize sub-key to generate as previously mentioned so.Other content item, for example " Sex andthe City-series 2 " etc. although can be downloaded or be received by client 66 potentially, yet can not be used for 64 times at this licence in this example.
Play count field 88 (Fig. 4) in the licence 64 indicates how many fragments that can use in any given main contents item series.The content identification field 82 of supposing licence 64 has suitable Value Data therein, if the play count field is empty, can use all fragments so.On the other hand, for example, if licence 64 has content identification field value " 3 " and play count field value " 5 ", only can to use title be any five fragments of the content 68c of " Sex and the City-series 3 " to client 66 so.Yet, in this example,, cannot use different fragment more than five this licence 64 times.
As another example, if having, licence 64 comprises expression formula: the main contents identification field 82 of " 1≤[content i.d.]≤5 ", and play count field 88 is empty, and client 66 can be used all ten fragments in each of all five " Sex and the City " serial 68a-68e so.As another example, if the main contents identification field 82 of licence comprises expression formula: " 1||4 ", and the play count field is empty, and client 66 can be used only two specific main contents items so: all ten fragments of each among " Sex and the City-series 1 " 68a and " Sex and the City-series 4 " 68d.
Client 66 is the content of the clip content identification field 84 (Fig. 4) in the subscription section 76 of occupancy permit 64 in a similar manner.Data in the clip content field 84 indicate which montage or the attached track content item of giving allows client 66 to use.Therefore, for example, if licence 64 has main contents identification field 82 that comprises value " 2 " and the clip content identification field 84 that comprises value " 2 ", not only can to use title be the main contents 68b of " Sex and the City-series 2 " to client 66 so, can also use clip content " montage: Sex and the City-series 2 " 70b.According to some business prototype, this licence 64 will spend more money than the licence of void value in the montage identification field, because the user can check montage or the attached track of giving that is associated with main contents, and check main contents itself.
Music and video preview identification field 134,136 (Tu7 ﹠amp; 8) operation in a different manner.Licence preview identification field 86 (Fig. 4) allow to be used following all situations: a kind of preview (for example video or audio frequency) another kind of or both.Therefore, for example, if the preview identification field 86 in the licence 64 comprises value " 1 ", so client 66 can use title be " audio preview # 1 ", " audio preview # 2 " ... ten audio preview content items of all of " audio preview #10 ", but client 66 can not be used any video preview content item (Fig. 9).On the other hand, if the preview identification field 86 in the licence 64 comprises value " 2 ", so client 66 can use title be " video preview # 1 ", " video preview # 2 " ... ten video preview content items of all of " video preview #10 ", but can not use any audio preview content item.In alternative embodiment, yet the Voice ﹠ Video preview content can marshalling in other is arranged, or the unique value in each of available their identification fields separately identifies individually.In this case, can control visit by the mode that is similar to aforesaid main contents item to preview content.
Figure 10 is the simplified flow chart according to the method for the distributing contents of certain embodiments of the invention.Licence with the identification data that is used for institute's licensed content sends to client 160.Subsequently, the first content item sends to client 162 after licence is received by client.The first content item has the first content identification data, and at least a portion of first content item is an encrypted form.The identification data of licensed content makes a determination 164 corresponding to being used for regard to the first content identification data then.If the data correspondence is deciphered the encryption section 168 of first content item so.
Next, the second content item sends to client 170.The second content item has the second content identification data that is different from the first content identification data, and at least a portion of second content item is an encrypted form.Yet, if frame 164 expression determine that to show data not corresponding, can not decipher the first content item so, and instead, process proceeds to frame 170, wherein the second content item sends to client.The identification data of licensed content makes a determination 174 corresponding to being used for regard to the second content identification data.If data are not corresponding, process stops 172 so.On the other hand, if the data correspondence is deciphered the encryption section 176 of second content item so.Spread all over said process, the identification data that is used for institute's licensed content remains unchanged after licence sends to client.
Therefore, provide the method and system of distribution by the digital content of digital license management.According to some embodiment, be convenient to licence and content are issued the user, but make after licence is received the rights of using of a plurality of content items that a licence administrative client equipment receives.And licence has the data in the institute's licensed content identification field that still remains unchanged after licence is received by the user.Therefore, embodiments of the invention can be used as the part of subscription business model, and thus, a license awarding is to client, and a plurality of thereafter content items can send to this client and be used under the control of this licence by it.
Although specific embodiment of the present invention has been quoted in top description, will be understood that, can not depart from spirit of the present invention can make many modifications.Claim is intended to cover as falling into these modifications in true scope of the present invention and the spirit.Therefore present disclosed embodiment is considered to illustrative and nonrestrictive in all respects, scope of the present invention is indicated by claim rather than aforementioned description, and the institute in the connotation of claim equivalent and scope changes so is intended to and is contained in wherein.
Claims (41)
1. the method for the content used by client of a distribution, described method comprises:
Licence is sent to described client, and described licence has the identification data that is used for institute's licensed content;
After described client receives described licence, the first content item is sent to described client,
At least a portion of wherein said first content item is an encrypted form, and wherein said first content item has the first content identification data;
After described client receives described licence, the second content item is sent to described client,
At least a portion of wherein said second content item is an encrypted form, and wherein said second content item has the second content identification data that is different from described first content identification data;
If the described identification data of described first content identification data licensed content corresponding to being used for is then deciphered the encryption section of described first content item; And
If the described identification data of described second content identification data licensed content corresponding to being used for is then deciphered the encryption section of described second content item,
The described identification data that wherein is used for institute's licensed content is suitable for remaining unchanged after described licence sends to described client.
2. method according to claim 1, wherein said first content item sends to described client with described second content item at different time points, wherein said about at least one hour time interval of time point each interval.
3. method according to claim 1, wherein said first content item sends to described client with described second content item at different time points, wherein said about at least one day time interval of time point each interval.
4. method according to claim 1, wherein said first content item comprises in first film and at least a portion first television series, and wherein said second content item comprises one montage in second film and at least a portion second television series.
5. method according to claim 1, wherein said first content item comprises in film and at least a portion television series, and wherein said second content item comprises described one montage in described film and the described at least a portion television series.
6. method according to claim 1, wherein said licence has first sub-key, and wherein said first content item has second sub-key, and wherein said second content item has the 3rd sub-key, and described method also comprises:
Use described first and second sub-keys to generate first decruption key; And
Use the described first and the 3rd sub-key to generate second decruption key;
The encryption section of wherein deciphering described first content item comprises and uses described first decruption key to decipher described first content item; And
The encryption section of wherein deciphering described second content item comprises and uses described second decruption key to decipher described second content item.
7. the method for the content used by client of a distribution, described method comprises:
Licence is sent to described client, and described licence has the identification data that is used for institute's licensed content;
After described client receives described licence, at least five content items are sent to described client, at least a portion of in wherein said at least five content items each is an encrypted form, in wherein said at least five content items each has the first content identification data corresponding to value, and does not wherein have two described values to equate; And
If be used for each the described identification data of described first content identification data licensed content of described at least five content items, then decipher in described five content items the encryption section of each at least corresponding to being used for;
The described identification data that wherein is used for institute's licensed content is suitable for remaining unchanged after described licence sends to described client.
8. method according to claim 7, each in wherein said at least five content items sends to described client at different time points, the about at least one hour time interval of each each interval in the wherein said time point.
9. method according to claim 7, each in wherein said at least five content items sends to described client at different time points, the about at least one day time interval of each each interval in the wherein said time point.
10. method according to claim 7, wherein said at least five content items comprise at least five films.
11. method according to claim 7, wherein said at least five content items comprise at least five group TV programme.
12. method according to claim 7, wherein said at least five content items comprise at least five musical workss.
13. the method for the content that a distribution is used by client, described method comprises:
Licence is sent to described client, and described licence has the identification data that is used for institute's licensed content;
After described client receives described licence, at least five content items are sent to described client, at least a portion of in wherein said at least five content items each is an encrypted form, in wherein said at least five content items each has the first content identification data corresponding to value, and in wherein said at least five values each is equal to each other; And
If the described identification data of described first content identification data licensed content corresponding to being used for is then deciphered in described five content items the encryption section of each at least;
The described identification data that wherein is used for institute's licensed content is suitable for remaining unchanged after described licence sends to described client.
14. method according to claim 13, each in wherein said at least five content items sends to described client at different time points, the about at least one day time interval of each each interval in the wherein said time point.
15. method according to claim 13, each in wherein said at least five content items comprises video preview.
16. method according to claim 13, each in wherein said at least five content items comprises audio preview.
17. method according to claim 13, wherein said licence also has the licence sub-key, and in wherein said at least five content items each has the content sub-key, and described method also comprises:
Use described licence sub-key and described content sub-key generating solution decryption key;
Wherein decipher the encryption section of each in described at least five content items and comprise the encryption section that uses in described five content items of described decruption key deciphering each at least.
18. the method for the content that a distribution is used by client, described method comprises:
Licence is sent to described client, and described licence has the identification data that is used for institute's licensed content and has the play count data;
After described licence is received by described client, the first content item is sent to described client, at least a portion of wherein said first content item is an encrypted form, wherein said first content item has the first content identification data, and wherein said first content item comprises N discrete usable items of subcontent, and wherein N is the integer greater than 2; And
If the described identification data of described first content identification data licensed content corresponding to being used for, if and P is corresponding to described play count data, wherein P is the integer less than N, then deciphers each at least a portion that is no more than P in described N the discrete usable items of subcontent;
The described identification data and the described play count data that wherein are used for institute's licensed content are suitable for remaining unchanged after described licence sends to described client.
19. method according to claim 18, wherein said N discrete usable items of subcontent comprises N TV programme.
20. method according to claim 18, wherein said N discrete usable items of subcontent comprises N musical works.
21. a data structure that is used to send to client and is used to permit the first group of a plurality of content item that uses for described client, each in wherein said first group of a plurality of content item has the first content identification field, and described data structure comprises:
The first licence identification field is used to specify each the identity in described first group of a plurality of content item, and is used for preserving the first group id data of described identity corresponding to each of described first group of a plurality of content item;
The wherein said first licence identification field and described a plurality of first content identification field are suitable for after described data structure sends to the time point of described client allowing described client to use described first group of a plurality of content item when described client receives described first group of a plurality of content item; And
The wherein said first group id data are suitable for remaining unchanged after described data structure sends to described client.
22. data structure according to claim 21, at least a portion of each is encrypted in wherein said first group of a plurality of content item, and wherein said first group of a plurality of content item have a plurality of content sub-keys, and described data structure also comprises:
A plurality of licence sub-keys are suitable for using with described a plurality of content sub-keys, are applicable to a plurality of decruption keys of the encryption section of each in the described first group of a plurality of content item of deciphering with generation.
23. data structure according to claim 21, wherein said first group of a plurality of content item comprise in a plurality of films and the many group TV programme, wherein said data structure also is used to permit the second group of a plurality of content item that comprises a plurality of montages, and each in wherein said a plurality of montage has the clip content identification field, and described data structure also comprises:
The second licence identification field is used to specify each the identity in described a plurality of montage, and is used for preserving the second group id data of described identity corresponding to each of described a plurality of montages;
Wherein, the described second licence identification field and described a plurality of clip content identification field are suitable for after described data structure sends to the time point of described client allowing described client to use described a plurality of montage when described client receives described a plurality of montage; And
The wherein said second group id data are suitable for remaining unchanged after described data structure sends to described client.
24. data structure according to claim 23, wherein, the at least a portion of each is encrypted in described first and second groups of a plurality of content items, and wherein said first and second groups of a plurality of content items have a plurality of content sub-keys, and described data structure also comprises:
A plurality of licence sub-keys are suitable for using with described a plurality of content sub-keys, are applicable to a plurality of decruption keys of the encryption section of each in the described first and second groups of a plurality of content items of deciphering with generation.
25. data structure according to claim 21, wherein said first group of a plurality of content item are many group TV programme, each group in wherein said many group TV programme is made up of N TV programme at least, and wherein N is the integer greater than 2, and described data structure also comprises:
The second licence field is used to specify the quantity of P TV programme, and wherein P is the integer less than N;
The wherein said second licence field is suitable for allowing described client to use being no more than the individual TV programme of P in the described TV programme of N at least.
26. data structure according to claim 21, wherein said first group of a plurality of content item are many group musical workss, each group in wherein said many group musical workss is made up of N musical works at least, and wherein N is the integer greater than 2, and described data structure also comprises:
The second licence field is used to specify the quantity of P musical works, and wherein P is the integer less than N;
The wherein said second licence field is suitable for allowing described client to use being no more than the individual musical works of P in the described musical works of N at least.
27. data structure according to claim 21, wherein said first group of a plurality of content item comprise in a plurality of films and the many group TV programme, wherein said data structure also is used to permit the second group of a plurality of content item that comprises a plurality of previews, and each in wherein said a plurality of preview has the preview content identification field, and described data structure also comprises:
The second licence identification field is used to specify each the identity in described a plurality of preview, and is used to preserve the second group id data corresponding to the identity of described a plurality of previews;
Wherein, the described second licence identification field and described a plurality of preview content identification field are suitable for after described data structure sends to the time point of described client allowing described client to use described a plurality of preview when described client receives described a plurality of preview, and
The wherein said second group id data are suitable for remaining unchanged after described data structure sends to described client.
28. data structure according to claim 27, the at least a portion of each is encrypted in wherein said first and second groups of a plurality of content items, and wherein said first and second groups of a plurality of content items have a plurality of content sub-keys, and described data structure also comprises:
A plurality of licence sub-keys are suitable for using with described a plurality of content sub-keys, are applicable to a plurality of decruption keys of the encryption section of each in the described first and second groups of a plurality of content items of deciphering with generation.
29. a computer-readable medium comprises as the data structure described in the claim 21,22,25 and 26 any one.
30. data structure that is used to send to client and is used to permit a plurality of content items that use for described client, in wherein said a plurality of content item each has the content identification field that has corresponding to the data of content identification value, and wherein all described content identification values are equal to each other, and described data structure comprises:
The licence identification field is used to specify each the identity in described a plurality of content item, and is used to preserve the data corresponding to the identity of described a plurality of content items;
Wherein, described licence identification field and described a plurality of content identification field are suitable for after described data structure sends to the time point of described client allowing described client to use described a plurality of content item when described client receives described a plurality of content item; And
Described data in the wherein said licence identification field are suitable for remaining unchanged after described data structure sends to described client.
31. data structure according to claim 30, each in wherein said a plurality of content items comprises video preview.
32. data structure according to claim 30, each in wherein said a plurality of content items comprises audio preview.
33. data structure according to claim 30, at least a portion of each is encrypted in wherein said a plurality of content items, and wherein said a plurality of content item has a plurality of content sub-keys, and described data structure also comprises:
At least one licence sub-key, at least one that is suitable in described a plurality of content sub-keys used, and is applicable at least one decruption key of the encryption section of each in the described a plurality of content items of deciphering with generation.
34. a computer-readable medium comprises as the data structure described in the claim 30,31 and 32 any one.
35. one kind is used to control the system of client to the use of first content item and second content item, described system comprises:
A kind of equipment with processing unit that can software routine; With
By the programmed logic that described processing unit is carried out, wherein said programmed logic comprises:
Be used to handle the device of licence with the identification data that is used for institute's licensed content; With
Be used for before described client receives described first and second content items, described licence being sent to the device of described client;
The described identification data that wherein is used for institute's licensed content is suitable for remaining unchanged after described licence sends to described client;
Wherein said first content item has the first content identification data, at least a portion of wherein said first content item is an encrypted form, and if the described identification data of described first content identification data licensed content corresponding to being used for then be suitable for by the deciphering of described client; And
Wherein said second content item has the second content identification data that is different from described first content identification data, at least a portion of wherein said second content item is an encrypted form, and if the described identification data of described second content identification data licensed content corresponding to being used for then be suitable for by the deciphering of described client.
36. system according to claim 35, wherein said first content item comprises in first film and the first group of TV programme, and wherein said second content item comprises one montage in second film and the second group of TV programme.
37. system according to claim 35, wherein said first content item comprises in film and the one group of TV programme, and wherein said second content item comprises described one montage in described film and the described one group of TV programme.
38. system according to claim 35, wherein said licence also has first sub-key, and described first content item also has second sub-key, and described second content item also has the 3rd sub-key,
Wherein said client is suitable for using described first and second sub-keys to generate first decruption key and uses the described first and the 3rd sub-key to generate second decruption key, and
Wherein said first decruption key is used to decipher the encryption section of described first content item, and described second decruption key is used to decipher the encryption section of described second content item.
39. one kind is used to control the system of client to the use of first content item, described system comprises:
A kind of equipment with processing unit that can software routine; With
By the programmed logic that described processing unit is carried out, wherein said programmed logic comprises:
Be used to handle and have identification data that is used for institute's licensed content and device with licence of play count data; With
Be used for before described client receives described first content item, described licence being sent to the device of described client;
The described identification data and the described play count data that wherein are used for institute's licensed content are suitable for remaining unchanged after described licence sends to described client;
Wherein said first content item has the first content identification data, wherein said first content item is made up of N discrete usable items of subcontent, wherein N is the integer greater than 2, and at least a portion of each is an encrypted form in the individual discrete usable items of subcontent of wherein said N; And
Wherein, if if the described identification data of described first content identification data licensed content corresponding to being used for and P are corresponding to described play count data, wherein P is the integer less than N, being no more than P and being suitable for of at least a portion of each in then described N the discrete usable items of subcontent is by described client deciphering.
40. according to the described system of claim 39, wherein said N discrete usable items of subcontent comprises N TV programme.
41. according to the described system of claim 39, wherein said N discrete usable items of subcontent comprises N musical works.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2006/028853 WO2008013526A1 (en) | 2006-07-25 | 2006-07-25 | Method and system for providing a content subscription service |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101529462A true CN101529462A (en) | 2009-09-09 |
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| CN200680055786A Pending CN101529462A (en) | 2006-07-25 | 2006-07-25 | Method and system for providing a content subscription service |
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| Country | Link |
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| EP (1) | EP2044567A4 (en) |
| JP (1) | JP4959796B2 (en) |
| KR (1) | KR101301360B1 (en) |
| CN (1) | CN101529462A (en) |
| WO (1) | WO2008013526A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567625A (en) * | 2015-09-15 | 2018-01-09 | 谷歌有限责任公司 | Group license encryption and decryption |
| CN108804879A (en) * | 2017-05-03 | 2018-11-13 | 思科技术公司 | The method and system shared for content and service |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7065787B2 (en) | 2002-06-12 | 2006-06-20 | Microsoft Corporation | Publishing content in connection with digital rights management (DRM) architecture |
| CA2499356A1 (en) * | 2003-01-14 | 2004-07-29 | Matsushita Electric Industrial Co., Ltd. | Content reproduction device, license issuing server, and content reproduction system |
| US7716288B2 (en) * | 2003-06-27 | 2010-05-11 | Microsoft Corporation | Organization-based content rights management and systems, structures, and methods therefor |
| JP4778897B2 (en) * | 2004-03-09 | 2011-09-21 | パナソニック株式会社 | Content playback device |
| JP4734175B2 (en) * | 2006-05-22 | 2011-07-27 | 日本電信電話株式会社 | Content usage control system and content usage control method |
-
2006
- 2006-07-25 JP JP2009521725A patent/JP4959796B2/en not_active Expired - Fee Related
- 2006-07-25 EP EP20060800319 patent/EP2044567A4/en not_active Ceased
- 2006-07-25 CN CN200680055786A patent/CN101529462A/en active Pending
- 2006-07-25 WO PCT/US2006/028853 patent/WO2008013526A1/en active Application Filing
- 2006-07-25 KR KR1020097003752A patent/KR101301360B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567625A (en) * | 2015-09-15 | 2018-01-09 | 谷歌有限责任公司 | Group license encryption and decryption |
| CN108804879A (en) * | 2017-05-03 | 2018-11-13 | 思科技术公司 | The method and system shared for content and service |
| CN108804879B (en) * | 2017-05-03 | 2022-04-29 | 思科技术公司 | Method and system for content and service sharing |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101301360B1 (en) | 2013-09-16 |
| EP2044567A4 (en) | 2011-06-22 |
| WO2008013526A1 (en) | 2008-01-31 |
| KR20090045266A (en) | 2009-05-07 |
| JP4959796B2 (en) | 2012-06-27 |
| EP2044567A1 (en) | 2009-04-08 |
| JP2009545787A (en) | 2009-12-24 |
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Application publication date: 20090909 |