CN101448131A - Digital broadcast condition reception intelligent-sharing system based on wireless network - Google Patents
Digital broadcast condition reception intelligent-sharing system based on wireless network Download PDFInfo
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- CN101448131A CN101448131A CNA2008102466937A CN200810246693A CN101448131A CN 101448131 A CN101448131 A CN 101448131A CN A2008102466937 A CNA2008102466937 A CN A2008102466937A CN 200810246693 A CN200810246693 A CN 200810246693A CN 101448131 A CN101448131 A CN 101448131A
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Abstract
The invention relates to a digital broadcast condition reception intelligent-sharing system based on a wireless network, which comprises a main control terminal and a plurality of shared terminals correspondingly correlative to set-top boxes respectively. The main control terminal is communicated with the correlative set-top boxes by simulating the information exchange process of a smart IC card through a standard machine card interface, and is communicated with the smart IC card by simulating the information exchange behavior of the set-top boxes; and the shared terminals are communicated with the correlative set-top boxes thereof by simulating the information exchange behavior of the smart IC card through the standard machine card interface, obtain authorized control information and authorized management information from shared correlative set-top boxes and send the information to the main control terminal for the calculation of control words needed by business descrambling, and send control word parameters received from the main control terminal to the set-top boxes. The technical scheme of the digital broadcast condition reception intelligent-sharing system can realize that a plurality of receiving terminals of the same user receive the encryption business at the same time in a controlled area through sharing and using one smart IC card including the business authorization.
Description
Technical field
The present invention relates to the digital broadcasting technical field, relate in particular to a kind of digital broadcast condition reception intelligent-sharing system based on wireless network.
Background technology
It is that the control user of digital broadcast network operator is to authorizing the core technology of service information access process that condition receives (CA, Conditional Access) system.Reasonable in design, effectively, flexibly condition receiving system be not only guarantee operator can access the needs of rational repayment to the initial investment of business tine, also be simultaneously the important means that the terminal use reduces rating cost, rich cultural life intension.
The condition receiving system of digital broadcasting has experienced the development in analog-and digital-two generations.The key code system of first generation analogue system system carries out scrambling in main website to analog signal based on equipment, has only the user terminal that descrambler has been installed normally to watch.The equipment of analogue system is cracked easily and is duplicated, to analog signal add, scramble process also easily causes decrease in image quality, be accompanied by the development of digital video transmission technology, become the main implementation of current digital broadcast condition reception technique based on the second-generation system of digital interference and the processing of control information multi-level encryption.
Fig. 1 is the formation and the operation principle schematic diagram of digital broadcasting conditional access system in the prior art, as shown in the figure, professional up main website 11 is according to fast-changing control word (CW, Control Word) Business Stream is carried out digital interference and handle, the CW parameter of service terminal 12 using systems issue carries out can normally watching program after the scramble process to business.Main website carries out the two-stage encryption to the CW parameter and forms authorization control message (ECM, Entitlement ControlMessage) and entitlement management message (EMM, Entitlement Management Message), ECM, EMM message and business carry out being broadcast to the terminal use with the road after the multiplexing process.ECM and EMM message that 13 pairs of set-top box 14 of the intellective IC card that the user held provide are decrypted calculating, obtain current effective CW parameter.Set-top box 14 utilizes the CW parameter of intellective IC card 13 feedbacks that business is carried out scramble process, exports the multimedia service terminal then to and plays.Can there are differences between the ECM that different CA system manufacturers is adopted and the encryption generating algorithm of EMM message, but for the consideration of compatibility, " machine, the card " interface that is used to exchange ECM, EMM message and CW parameter between intellective IC card and the set-top box is a standard.
Although on such as realization details such as " scrambling algorithms ", exist certain difference, system frame structure shown in Figure 1 and operation principle still are widely used in DVB (Europe), ATSC (U.S.) and CMMB multiple digit broadcasting systems such as (China), and the notion of ECM, EMM message and CW parameter all occupies an important position in the realization of said system.Because the running of condition receiving system does not rely on the physical layer implementation of broadcast system, thereby condition receiving system shown in Figure 1 can be applied in the digital broadcast network based on multiple transmission technologys such as DVB-S, DVB-S2, DVB-C, DVB-T and ABS-S.
An important prerequisite hypothesis is followed in the design of system shown in Figure 1: " it is professional that any user who has bought service authorization of each moment only uses a station terminal to receive ", this hypothesis has implied a kind of rigid equivalence relation between user and the terminal.Under the constraint of this prerequisite hypothesis, current the system design mode that adopts usually is: payment multimedia broadcast network operator combination condition receiving system manufacturer provides to the paying customer and is storing individual distributing key (PDK, Personal Distributed Key) intellective IC card of information and ECM, EMM decipherment algorithm, set-top box and intellective IC card are abideed by the complete secure service receiving terminal of principle formation that " machine, card " uses in pairs.Effective service authorization of every intellective IC card binding, the user buys many sheet smart cards as required and pays corresponding cost, and operator is reduced to the distribution process of service authorization the sales process of intellective IC card.The operation of the whole Fare Collection System under " machine, card " use pattern in pairs is simple relatively, thereby has obtained bigger development and occupied dominant position in the design of current condition receiving system.Although this pattern has played important impetus in the development of payable broadcasts business, user and receiving terminal are carried out drawback that rigid equivalent processes brings be accompanied by economic development and constantly highlighting in recent years.
Being accompanied by the rapid economy development and the people constantly strengthens the needs that enrich the life of the spirit, the demand that the user buys a plurality of service terminal equipment while watching encrypted programs constantly increases the whole new set of applications pattern of this formation a kind of " single user, multiple terminals among a small circle, ".Owing to there are differences between the user that current condition receiving system designing institute is implicit and equivalence relation between the terminal and this new application model, thereby can't solve the problem of secure service controlled access in the new applied environment technically.According to current condition receiving system operation mode, if the user uses a plurality of terminals to receive one group of secure service of having bought mandate simultaneously, although the user does not obtain extra amount of information, still must repeat paying to operator and apply for a plurality of effective intellective IC cards according to " machine, card " matching used principle.On the other hand, operator also should not be adopted as the user repeat apply for re-set price, provide preferential mode to solve the current difficulty that faces.Be accompanied by the continuous expansion of network size, operator presents the trend of reduction constantly to terminal use's ability to supervise.Be subjected to the restriction of cost, whether operator can not be confined to the scope of application in the scope of a validated user by investigating many IC-cards judging user applies in minute detail in the hair fastener stage, can not in use monitor effectively the enforcement of every IC-card.If this fraud that the user distributes to other users with the intellective IC card of a plurality of associations of being held can not be controlled effectively, operator will be faced with the great fee flows danger of going wrong.This refusal of user is that the supervision cost pressure of same set of professional resentment that repeats paying and operator is the original architectural framework of expansion under the current new application model, makes up two important motive forces of brand-new solution.
In addition, needs for the value preserving of the equipment up-front investment of paying network, framework to the digital broadcast condition reception is done globality, subversive brand-new design also is worthless, and solution must be based on solving the new problem that faces when the basic framework that precondition receives.
Summary of the invention
The purpose of this invention is to provide a kind of digital broadcast condition reception intelligent-sharing system, to solve the problems referred to above that condition receiving system exists in the prior art based on wireless network.
In order to achieve the above object, technical scheme of the present invention proposes a kind of digital broadcast condition reception intelligent-sharing system based on wireless network, comprise respectively and the corresponding related main control terminal of each set-top box and several shared terminals,
Described main control terminal, the related set-top box with master control of information interaction behavior by standard machine card artificial intelligence IC-card communicates, and the information interaction behavior of replicating machine top box and described intellective IC card communicate; Described main control terminal is obtained authorization control message and entitlement management message and is sent to described intellective IC card from related set-top box of master control or shared terminal, and correspondence sends the control word parameter that obtains from described intellective IC card to related set-top box of described master control or shared terminal again.
Described shared terminal, information interaction behavior by standard machine card artificial intelligence IC-card communicates with shared related set-top box, related set-top box is obtained authorization control message and entitlement management message is sent to described main control terminal from sharing, and sends the control word parameter that receives from described main control terminal to sharing related set-top box.
In the above-mentioned digital broadcast condition reception intelligent-sharing system, described main control terminal further comprises:
The first machine card interface module, the information interaction behavior that is used for the artificial intelligence IC-card communicates with the related set-top box of described master control;
The second machine card interface module, the information interaction behavior and the described intellective IC card that are used for the replicating machine top box communicate;
The main control end wireless communication module, be used for receiving authorization control message and the entitlement management message that described shared terminal sends, and intellective IC card is sent to described shared terminal by wireless network again according to the control word parameter that described authorization control message and entitlement management message calculate by wireless network.
In the above-mentioned digital broadcast condition reception intelligent-sharing system, described shared terminal further comprises:
The machine card interface module, the information interaction behavior that is used for the artificial intelligence IC-card communicates with described shared related set-top box;
Share the end wireless communication module, be used for to be sent to described main control terminal from authorization control message and the entitlement management message that described shared related set-top box is obtained, and receive being decrypted that described main control terminal sends and calculate resulting control word parameter by intellective IC card by wireless network.
In the above-mentioned digital broadcast condition reception intelligent-sharing system, described main control terminal also comprises:
The cooperation information storage module is used to store shared terminal and the cooperation work authorization information of main control terminal and corresponding wireless transmitting system physical layer running parameter; Then described shared terminal sends the Frame that adds the cooperation work authorization information according to predefined wireless transmitting system physical layer running parameter to main control terminal;
Cooperation information authentication module, be used for extracting the cooperation work authorization information of Frame that shared terminal sends, with judge whether to allow to transmit described Frame after the corresponding cooperation work information of described cooperation information storage module storage is carried out verification to intellective IC card, in it sends Frame, add the cooperation work authorization information simultaneously in this.
In the above-mentioned digital broadcast condition reception intelligent-sharing system, described main control terminal also comprises:
The transmission power adjustment module is used for limiting by the maximum transmission power of regulating described main control end wireless communication module the distribution of described shared terminal
Technical scheme of the present invention is by obtaining and utilize the relevant control of the professional scramble process process of wireless network transmissions condition receiving system parameter, make up between set-top box and the intellective IC card and be used for the virtual bridge of information interaction, thereby realization condition receiving system work-based logic concerns on the aspect virtual interacting of " one-to-many " relation between the service authorization and a plurality of service terminal, realizes that a plurality of receiving terminals of same user in the controlled area use a mode that comprises the intellective IC card of service authorization to receive secure service simultaneously by sharing.
Description of drawings
Fig. 1 is the formation and the operation principle schematic diagram of digital broadcasting conditional access system in the prior art;
Fig. 2 is the digital broadcast condition reception intelligent-sharing system embodiment schematic diagram that the present invention is based on wireless network;
Fig. 3 is the structural representation of main control terminal and shared terminal among Fig. 2 embodiment.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Fig. 2 is the digital broadcast condition reception intelligent-sharing system embodiment schematic diagram that the present invention is based on wireless network, as shown in the figure, this system 20 comprises intellective IC card 21 and a plurality of set-top box, and respectively with the corresponding related main control terminal 23 of each set-top box and several shared terminals 24, wherein related with main control terminal 23 set-top box is called the related set-top box 221 of master control, and the set-top box related with shared terminal 24 then is called shares related set-top box 222.Main control terminal 23, the related set-top box 221 with master control of information interaction behavior by standard machine card artificial intelligence IC-card communicates, and the information interaction behavior of replicating machine top box and intellective IC card 21 communicate, it obtains ECM and EMM information and is sent to intellective IC card 21 from related set-top box 221 of master control or shared terminal 24, and correspondence sends the CW information of obtaining from intellective IC card 21 to related set-top box 221 of master control or shared terminal 24 again; Shared terminal 24, information interaction behavior by standard machine card artificial intelligence IC-card communicates with shared related set-top box 222, related set-top box 222 is obtained ECM and EMM information is sent to main control terminal 23 from sharing, and sends the CW information that receives from main control terminal 23 to sharing related set-top box 222.
Fig. 3 is the concrete structure schematic diagram of main control terminal 23 and shared terminal 24 in the foregoing description, as shown in the figure, main control terminal 23 is a kind of interface simulation and the Data Bridge forwarding units between insertion machine top box 221 and the intellective IC card 24, it comprises: the first machine card interface module 231, and the related set-top box 221 with master control of information interaction behavior that is used for the artificial intelligence IC-card communicates; The second machine card interface module 232, the information interaction behavior and the intellective IC card 21 that are used for the replicating machine top box communicate; Main control end wireless communication module 233 is used for receiving ECM and the EMM information that shared terminal 24 sends by wireless network, and intellective IC card 21 is sent to shared terminal 24 by wireless network again according to the CW information that this ECM and EMM information calculations obtain.
Specifically, main control terminal 23 connects related set-top box 221 of master control and intellective IC card 21 respectively by two interface modules 231,232 that meet the ISO-7816 standard.Main control terminal 23 is carried out exchanges data by the related set-top box 221 with master control of " machine, card " interface of standard, and the Frame that comprises ECM and EMM message is obtained in the information interaction behavior of artificial intelligence IC-card, sends the Frame that comprises the CW parameter.Meanwhile, main control terminal 23 is also carried out exchanges data by " machine, the card " interface and the intellective IC card 21 of standard, and the information interaction behavior of replicating machine top box sends the Frame that comprises ECM and EMM message, obtains the Frame that comprises the CW parameter.
Continue as shown in Figure 3, the formation of shared terminal 24 is similar, because it does not insert intellective IC card, thereby only keeps and the machine card interface module 241 of sharing related set-top box 222 communications; Also comprise in addition and share end wireless communication module 242, it is used for will being sent to main control terminal 23 from sharing ECM and the EMM message that related set-top box 222 obtains by wireless network, and the CW parameter that is calculated by intellective IC card 21 that receives that main control terminal 23 sends.
As mentioned above, main control terminal 23 with between intellective IC card and the set-top box directly information exchange be divided into " set-top box and terminal " and " terminal and intellective IC card " two independently data exchange process.Set-top box required ECM and EMM message of decouples computation CW parameter constantly in the multiplexed Business Stream sends these information and drives the CW parameter that it calculates current use to intellective IC card 21 by the first machine card interface module 231 then.The information interaction of microprocessor artificial intelligence IC-card on the first machine card interface module 231 of junctor top box that main control terminal 23 is built-in is handled behavior, obtains the Frame that comprises ECM and EMM message.Simultaneously, main control terminal 23 sends ECM and EMM message to intellective IC card at the information interactive process that is connected to replicating machine top box on the second machine card interface module 232 of intellective IC card 21, and 21 of intellective IC cards begin to calculate the CW parameter of current use after receiving information.The exchanges data that shared terminal 24 and intellective IC card are 21 can't be finished in this locality, it is at first by sharing end wireless communication module 242 ECM and EMM message to be sent to main control terminal 23, then drive intellective IC card 21 by main control terminal 23 and calculate the CW parameter of current use, last main control terminal 23 is beamed back shared terminal 24 by main control end wireless communication module 233 with the CW parameter and is shared related set-top box 222 by its payment and use.Have relation one to one in order to guarantee to calculate resultant CW parameter and ECM, EMM message, main control terminal 23 need guarantee to calculate in deciphering once and not have new ECM, EMM message input intellective IC card 21 before finishing.The CW Parameters Calculation request that derives from a plurality of shared terminals 24 is cushioned, is lined up by main control terminal 23 and afterwards transfers to intellective IC card 21 processing according to the principle of First Come First Served (FCFS).
Continue as shown in Figure 3, main control terminal also comprises: cooperation information storage module 234, be used to store shared terminal and the cooperation work information of main control terminal and corresponding wireless transmitting system physical layer running parameter, carry out being provided with of corresponding information in this module after, shared terminal 24 can send the Frame that add cooperation work information to main control terminal 23 according to predefined wireless transmitting system physical layer running parameter; Cooperation information authentication module 235, then be used for extracting the cooperation work information of Frame that shared terminal sends, with its with cooperation information storage module 234 in the corresponding cooperation work information of storage carry out judging whether after the verification to allow to transmit these Frames to intellective IC card 21.
In conjunction with shown in Figure 2, main control terminal 23 promptly becomes center control nodes active in the shared system after inserting intellective IC card 21, and shared terminal 24 carries out the mutual of information by wireless network and main control terminal 23.The user at first operates the service relation of binding between shared and the main control terminal by " pairing " before the use first time, relevant cooperation work information promptly is retained in the 234 interior changes next time up to service relation of cooperation information storage module.Main control terminal 23 and shared terminal 24 are by " pairing " agreement physical layer work parameter, this parameter can be the center frequency point of Frequency Division Multiplexing system, the frequency hopping collection of illustrative plates of frequency-hopping system or the spreading code of spread spectrum system, and it depends on the specific implementation of physical layer.Shared terminal 24 physical layer running parameter by appointment carries out ECM, EMM transmission of Information, adds the cooperation work authorization information so that main control terminal 23 detects in the Frame.The Frame from shared terminal 24 is monitored, obtained to main control terminal 23 physical layer parameter by appointment, extract the cooperation work authorization information, the corresponding informance of holding with self carries out judging whether to allow this shared terminal 24 to carry out alternately with intellective IC card 21 after the verification.Shared terminal 24 also pays no attention to whether can obtaining the response of main control terminal 23, and it just transmits data simply between set-top box and intellective IC card, and abnormal conditions are responsible for processing by set-top box and intellective IC card.It is the star-network at center that main control terminal 23 constitutes with the main control terminal by wireless communication technology with shared terminal 24, does not need interactive information in the system between the shared terminal.
Continue as shown in Figure 3, main control terminal 23 also can be provided with transmission power adjustment module 236, and it is used for limiting by the maximum transmission power of regulating main control end wireless communication module 233 distribution of shared terminal 24.According to this application, main control terminal 23 can be chosen appropriate radio waves propagation model, the necessary maximum power parameter of reliable communication between computing terminal then, system is by extending on geometric space of setting power parameter limit shared region reasonably, the scale of control shared system, the rights and interests of balance user and operator.
More than be preferred forms of the present invention, according to content disclosed by the invention, those of ordinary skill in the art can expect some identical, replacement schemes apparently, all should fall into the scope of protection of the invention.
Claims (5)
1, a kind of digital broadcast condition reception intelligent-sharing system based on wireless network comprises and the corresponding related main control terminal of each set-top box and several shared terminals,
Described main control terminal, the related set-top box with master control of information interaction behavior by standard machine card artificial intelligence IC-card communicates, and the information interaction of replicating machine top box and described intellective IC card communicate; Described main control terminal is obtained authorization control message and entitlement management message and is sent to described intellective IC card and carries out the calculating of the required control word parameter of professional descrambling by it from the related set-top box of master control or shared terminal, correspondingly again sends the control word parameter that obtains from described intellective IC card to related set-top box of described master control or shared terminal;
Described shared terminal, information interaction behavior by standard machine card artificial intelligence IC-card communicates with shared related set-top box, related set-top box is obtained authorization control message and entitlement management message is sent to described main control terminal from sharing, and sends the control word parameter that receives from described main control terminal to sharing related set-top box.
2, digital broadcast condition reception intelligent-sharing system as claimed in claim 1 is characterized in that, described main control terminal further comprises:
The first machine card interface module, the information interaction behavior that is used for the artificial intelligence IC-card communicates with the related set-top box of described master control;
The second machine card interface module, the information interaction behavior and the described intellective IC card that are used for the replicating machine top box communicate;
The main control end wireless communication module, be used for receiving authorization control message and the entitlement management message that described shared terminal sends, and intellective IC card is sent to described shared terminal by wireless network again according to the control word parameter that described authorization control message and entitlement management message calculate by wireless network.
3, digital broadcast condition reception intelligent-sharing system as claimed in claim 2 is characterized in that, described shared terminal further comprises:
The machine card interface module, the information interaction behavior that is used for the artificial intelligence IC-card communicates with described shared related set-top box;
Share the end wireless communication module, be used for will being sent to described main control terminal from authorization control message and the entitlement management message that described shared related set-top box is obtained by wireless network, and the control word parameter that calculates by intellective IC card that receives that described main control terminal sends.
4, the digital broadcast condition reception intelligent-sharing system of stating as claim 3 is characterized in that, described main control terminal also comprises:
The cooperation information storage module is used to store shared terminal and the cooperation work authorization information of main control terminal and corresponding wireless transmitting system physical layer running parameter; Then described shared terminal sends the Frame that adds the cooperation work authorization information according to predefined wireless transmitting system physical layer running parameter to main control terminal;
Cooperation information authentication module, be used for extracting the cooperation work authorization information of Frame that shared terminal sends, with judge whether to allow to transmit described Frame after the corresponding cooperation work authorization information of described cooperation information storage module storage is carried out verification to intellective IC card, in the Frame of its transmission, add the cooperation work authorization information simultaneously.
5, the digital broadcast condition reception intelligent-sharing system of stating as claim 2 is characterized in that, described main control terminal also comprises:
The transmission power adjustment module is used for limiting by the maximum transmission power of regulating described main control end wireless communication module the distribution of described shared terminal.
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| CNA2008102466937A CN101448131A (en) | 2008-12-29 | 2008-12-29 | Digital broadcast condition reception intelligent-sharing system based on wireless network |
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| CNA2008102466937A CN101448131A (en) | 2008-12-29 | 2008-12-29 | Digital broadcast condition reception intelligent-sharing system based on wireless network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964896A (en) * | 2010-03-01 | 2011-02-02 | 广东九联科技股份有限公司 | Digital television set-top box multi-terminal user viewing authorization system and authorization method thereof |
| CN102932692A (en) * | 2011-08-12 | 2013-02-13 | 华为终端有限公司 | Method and device for authenticating set-top box |
| CN104581239A (en) * | 2014-12-19 | 2015-04-29 | 广东九联科技股份有限公司 | Portable smart card terminal and set-top box system |
| CN108055557A (en) * | 2017-12-26 | 2018-05-18 | 北京四达时代软件技术股份有限公司 | A kind of de-scrambling method and relevant device |
-
2008
- 2008-12-29 CN CNA2008102466937A patent/CN101448131A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964896A (en) * | 2010-03-01 | 2011-02-02 | 广东九联科技股份有限公司 | Digital television set-top box multi-terminal user viewing authorization system and authorization method thereof |
| CN102932692A (en) * | 2011-08-12 | 2013-02-13 | 华为终端有限公司 | Method and device for authenticating set-top box |
| WO2013023519A1 (en) * | 2011-08-12 | 2013-02-21 | 华为终端有限公司 | Set top box authentication method and device |
| CN104581239A (en) * | 2014-12-19 | 2015-04-29 | 广东九联科技股份有限公司 | Portable smart card terminal and set-top box system |
| CN108055557A (en) * | 2017-12-26 | 2018-05-18 | 北京四达时代软件技术股份有限公司 | A kind of de-scrambling method and relevant device |
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