CN1620137A - Authorization system and method - Google Patents
Authorization system and method Download PDFInfo
- Publication number
- CN1620137A CN1620137A CN 200310116774 CN200310116774A CN1620137A CN 1620137 A CN1620137 A CN 1620137A CN 200310116774 CN200310116774 CN 200310116774 CN 200310116774 A CN200310116774 A CN 200310116774A CN 1620137 A CN1620137 A CN 1620137A
- Authority
- CN
- China
- Prior art keywords
- user
- mandate
- stb
- thresholding
- authentication server
- Prior art date
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- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000013475 authorization Methods 0.000 title claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000012790 confirmation Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 3
- 201000004569 Blindness Diseases 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
- H04N21/65—Transmission of management data between client and server
- H04N21/658—Transmission by the client directed to the server
-
- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
-
- 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
- H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A authoritative system contains front end CA, set-top-box (STB) connected with CA, certification server connected with CA, bi-directional module connected respectively with certification and STB. Said invention also provides certification method used in STB end and certification server, and solves the defect of low effect and can not authorize in time of current authoritative system.
Description
Technical field
The present invention relates to the digital cable TV technical field, specifically finger is applied to a kind of authoring system and the method in the digital cable TV system.
Background technology
Along with the user is more and more higher to the requirement of TV programme, traditional antenna that passes through comes the traditional tv of received television program to meet the demands, and cable TV is used widely because the abundant high TV programme of quality can be provided.
The application of cable TV mainly is to carry out on cable television network, because networking needs cost, so operator generally all will charge to the cable TV subscriber, but in traditional cable television network, because the imperfection of authoring system, freely receive cable TV so some disabled users usually occur, so in the digital television system of rising day by day in recent years, for effectively control TV user paying, just introduced condition receiving system CAS (Conditional Access System), described CAS act as: in the mandate of front end (Head End) leading subscriber, and TV programme is encrypted, have only validated user to be decrypted at user's receiving terminal to TV programme through authorizing, watch program normally, the user of process mandate is not owing to can't decipher, and normally TV reception has so just reached the purpose that the control user pays dues.
The system configuration of CAS as shown in Figure 1 in the prior art, security system comprises three infill layers: to be scrambler carry out scrambling according to control word CW (Control Word) to the audio/video code stream of MPEG2 to lowermost layer, the access control information of channel forms Entitlement Control Message (Entitlement Control Message, ECM), the subscriber authorisation generation Entitlement Management Message that CA provides according to Subscriber Management System SMS (EntitlementManagement Message, EMM).Wherein, EMM is at the user, and ECM is at TV programme, EMM and ECM information and TV program information multiplexing together transport stream (Transfer Stream, TS) in by the coaxial hybrid network of light (HFC) Network Transmission.But, because the bandwidth of HFC (the coaxial hybrid network of light) network is limited, enough bandwidth for transmission can be arranged in order to guarantee TV programme, just must limit the bandwidth that EMM and ECM take.When customer volume is very big, as surpassing 1,000,000 grades, EMM information will be magnanimity, and under the situation of limited bandwidth, the time that the user obtains the authorization will be long, even can have influence on and normally watch program.
In the prior art commonly used authoring system as shown in Figure 2, as seen, network is a kind of unidirectional broadcast network at present, user's EMM information is multiplexingly to be broadcast to the user in TS flows.There is following shortcoming in existing systems:
1, owing to be unidirectional network, so digital TV front-end can't perception user's online state, EMM information has only continuous wheel to broadcast, and then when the EMM amount of information is very big, will take too much bandwidth, sometimes even influence user's TV reception.
2, owing to be unidirectional network, so no matter whether the user online, whether set-top box starts shooting, all however this user of broadcasting who stops EMM information, and under the not online situation of user, these information are again invalid, so cause the waste of information;
3, owing to be unidirectional network, so the mandate to the user generally can continue longer a period of time, and the user receives after the mandate, digital TV front-end does not also know that the user is authorized, so long period of time Inner Front End also to ceaselessly repeat to send these authorization messages, and these information also are invalid in this case.
In a word, existing authoring system has the shortcoming that mandate efficient is low and can not in time authorize.
Summary of the invention
The object of the invention is to provide a kind of authoring system and method, to solve the shortcoming that mandate efficient that existing authoring system exists is low and can not in time authorize.
For achieving the above object, the invention provides following technical scheme:
A kind of authoring system, it comprises: front end CA; Set-top box (STB) is connected with described front end CA, and described system also comprises: authentication SERVER is connected with described front end CA; Two-way modules is connected with described authentication SERVER and described STB respectively.
Built-in or hang with a subscriber identification module outward among the described STB.
Pass passage once between described authentication SERVER and two-way modules.
Described return path is: PSTN net (public switch telephone network), GSM net (a kind of mobile network), CABLE net (cable television network), 3G net (3G (Third Generation) Moblie net) or satellite network.
A kind of authorization method is applied to the STB end, comprises the steps:
A1, STB start;
B1, authentication SERVER initiatively initiate authentication;
C1, authentication SERVER judge whether the life cycle of authorizing surpasses thresholding, if do not surpass thresholding, then this time identifying procedure finishes; If the life cycle of authorizing has surpassed thresholding, then wait for the new mandate that front end is sent, if do not wait until, then continue to initiate authentication in specified time limit;
D1, obtain new mandate after authentication SERVER send confirmation to STB.
A kind of authorization method is applied to front end CA, comprises the steps:
The user that A2, authentication Server perceive certain identity reaches the standard grade;
B2, authentication SERVER judge whether user's mandate surpasses thresholding, if do not surpass thresholding then the flow process termination; Otherwise send new mandate in the exchange channels outside broadcast channel in band or the band;
C2, judge whether to want wait acknowledge message, if, then ceaselessly send new the mandate, if not, then finish to authorize.
Thresholding among the described step B2 is less than the thresholding that defines among the STB, so that front end CA finds that at STB mandate sends new mandate before overtime.
Front end CA is divided into two different priority queries with the user, and formation is deposited to authorize and surpassed thresholding but also do not have overtime user, and the overtime user of mandate is deposited in a formation.
The priority of depositing the overtime user's of mandate formation is higher than to deposit authorizes the formation that surpasses thresholding but also do not have overtime user.
After adopting the solution of the present invention, have following advantage:
1, mandate of the present invention is finished by utilizing user's online information, so avoid the blindness wheel of EMM information to broadcast effectively, has improved the efficient of Digital Television authoring system greatly;
2,, further shorten and authorize expired user to obtain the time of new mandate by expired user is provided with priority;
3, owing to increased return path, so can broadcast EMM targetedly, no longer blindly take turns for not online user and the user that obtained the authorization and broadcast EMM information, save a large amount of bandwidth;
4, because EMM information is broadcast the raising greatly of efficient, and improve the mandate priority of authorizing expired user, made expired user can in time obtain new mandate.
Description of drawings
Fig. 1 is a cas system structure chart in the prior art;
Fig. 2 is a unidirectional broadcast network networking diagram of the prior art;
Fig. 3 is the structure chart of authoring system of the present invention;
The flow chart that Fig. 4 specifically holds at STB for authorization method of the present invention;
Fig. 5 for authorization method of the present invention specifically at the flow chart of front end.
Embodiment
Please refer to Fig. 3, be authoring system structure chart provided by the invention, authoring system provided by the invention comprises:
Front end CA (Condition Access);
Set-top box (STB), be connected with described front end CA, in described STB built-in or outside hang with a subscriber identification module, that transmit between front end CA and STB is transport stream TS (Transfer Stream), described transport stream comprises: Entitlement Control Message ECM (Entitlement Control Message), front end CA produces Entitlement Management Message EMM (EntitlementManagement Message) and TV program information according to the subscriber authorisation that Subscriber Management System SMS provides, wherein, EMM is at the user, ECM is at TV programme, EMM and ECM information and TV program information multiplexing together in transport stream TS (Transfer Stream) lining by HFC (the coaxial hybrid network of light) Network Transmission;
Authentication SERVER is connected with described front end CA;
Two-way modules is connected with described authentication SERVER and described STB respectively.
Between described authentication SERVER and two-way modules, pass passage once, in Fig. 3, indicate with four-headed arrow, in actual applications, this return path has multiple choices, as: PSTN (common switch telephone network), GSM (a kind of mobile network), CABLE (cable television network) etc., even can also be 3G (3G (Third Generation) Moblie net) or satellite network.When the user reached the standard grade, it is online that the authentication SERVER that links to each other with front end CA perceives the user by return path; When the user shuts down, then notify front end CA user off-line by return path.When front end CA perceive the user online after, promptly judge to authorize whether expired, if be about to expired then repeatedly send new mandate to the user by in-band channel; The user receives after the mandate, by return network notice front end.
Below in conjunction with Fig. 4 and Fig. 5 authorization method of the present invention is described in detail:
Please refer to Fig. 4, be the flow chart that authorization method of the present invention is specifically held at STB, it comprises: A1, STB start; B1, authentication SERVER initiatively initiate authentication; Whether the life cycle that C1, authentication SERVER judge to authorize surpasses thresholding (thresholding is the subscriber authorisation that an is provided with lead before overtime, surpasses this lead, illustrate that subscriber authorisation will be soon overtime), if surpass thresholding, then this time identifying procedure end; If the life cycle of authorizing has surpassed thresholding, then wait for the new mandate that front end is sent, if do not wait until (may be authentication message lose cause) in specified time limit, then continue to initiate authentication; D1, obtain new mandate after authentication SERVER send confirmation to STB, arrive this, authorization flow finishes.
Please refer to Fig. 5, for authorization method of the present invention specifically at the flow chart of front end, it comprises: the user that A2, authentication Server perceive certain identity reaches the standard grade; B2, authentication SERVER judge that whether user's mandate surpasses thresholding (this thresholding can be less than the thresholding that defines among the STB, sends new mandate so that front end CA finds to authorize at STB before overtime), if not above thresholding then the flow process termination; Otherwise send new mandate in the exchange channels outside broadcast channel in band or the band; C2, judge whether to want wait acknowledge message, if, then ceaselessly send new the mandate, if not, i.e. expression has waited until and acknowledge message has arrived this that authorization flow finishes.
In addition, authorize the authorized time of overtime user in order further to shorten, front end CA can be divided into the user two different priority queries, formation is deposited to authorize and is surpassed thresholding but also do not have overtime user, the overtime user of mandate is deposited in a formation, the queue priority in back is higher, that is to say if find to authorize overtime user to reach the standard grade, and then preferentially sends this class user's mandate.
System and method provided by the invention has following advantage:
1, mandate of the present invention is to finish by the online information of utilizing the user, so effectively avoid EMM The blindness carousel of information has improved the efficient of DTV authoring system greatly;
2, by expired user is arranged priority, further shorten and to authorize expired user to obtain new mandate Time;
3, owing to increased return path, thus EMM can be broadcast targetedly, for not online User and the user that obtained the authorization be carousel EMM information no longer blindly, saves a large amount of bandwidth;
4, because EMM information is broadcast the greatly raising of efficient, and improved the mandate of authorizing expired user Priority is so that expired user can in time obtain new mandate.
Claims (9)
1, a kind of authoring system, it comprises: head end conditional receiving system (CAS); Set-top box (STB) is connected with described front end CA, it is characterized in that described system also comprises: certificate server (SERVER) is connected with described front end CA; Two-way modules is connected with described certificate server and described STB respectively.
2, the system as claimed in claim 1 is characterized in that, and is built-in or hang with a subscriber identification module outward among the described STB.
3, the system as claimed in claim 1 is characterized in that, passes passage once between described authentication SERVER and two-way modules.
4, system as claimed in claim 3 is characterized in that, described return path is: public switch telephone network (PSTN), GSM net, cable television network (CABLE net), 3G (Third Generation) Moblie net (3G net) or satellite network.
5, a kind of authorization method is applied to the STB end, it is characterized in that described method comprises the steps:
A1, STB start;
B1, authentication SERVER initiatively initiate authentication;
C1, authentication SERVER judge whether the life cycle of authorizing surpasses thresholding, if do not surpass thresholding, then this time identifying procedure finishes; If the life cycle of authorizing has surpassed thresholding, then wait for the new mandate that front end is sent, if do not wait until, then continue to initiate authentication in specified time limit;
D1, obtain new mandate after authentication SERVER send confirmation to STB.
6, a kind of authorization method is applied to front end CA, it is characterized in that, described method comprises the steps:
The user that A2, authentication Server perceive certain identity reaches the standard grade;
B2, authentication SERVER judge whether user's mandate surpasses thresholding, if do not surpass thresholding then the flow process termination; Otherwise send new mandate in the exchange channels outside broadcast channel in band or the band;
C2, judge whether to want wait acknowledge message, if, then ceaselessly send new the mandate, if not, then finish to authorize.
7, method as claimed in claim 6 is characterized in that, the thresholding among the described step B2 is less than the thresholding that defines among the STB, so that front end CA finds that at STB mandate sends new mandate before overtime.
8, method as claimed in claim 6 is characterized in that, front end CA is divided into two different priority queries with the user, and formation is deposited to authorize and surpassed thresholding but also do not have overtime user, and the overtime user of mandate is deposited in a formation.
9, method as claimed in claim 8 is characterized in that, the priority of depositing the overtime user's of mandate formation is higher than to deposit authorizes the formation that surpasses thresholding but also do not have overtime user.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101167742A CN100373946C (en) | 2003-11-21 | 2003-11-21 | Authorization system and method |
| PCT/CN2004/001324 WO2005050990A1 (en) | 2003-11-21 | 2004-11-22 | An entitlement system and method |
| HK05109086A HK1077146A1 (en) | 2003-11-21 | 2005-10-14 | An entertainment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101167742A CN100373946C (en) | 2003-11-21 | 2003-11-21 | Authorization system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1620137A true CN1620137A (en) | 2005-05-25 |
| CN100373946C CN100373946C (en) | 2008-03-05 |
Family
ID=34599083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101167742A Expired - Fee Related CN100373946C (en) | 2003-11-21 | 2003-11-21 | Authorization system and method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100373946C (en) |
| HK (1) | HK1077146A1 (en) |
| WO (1) | WO2005050990A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337478C (en) * | 2005-06-30 | 2007-09-12 | 广东省电信有限公司研究院 | A private key acquiring method for use in set-top box |
| CN101076109B (en) * | 2007-05-11 | 2010-05-19 | 天栢宽带网络科技（上海）有限公司 | Two-way CA system of digital TV-set and method for ordering and cancelling programm based on it |
| CN101582729B (en) * | 2009-05-26 | 2011-02-23 | 北京创毅视讯科技有限公司 | Method and system for acquiring service key, conditional access module and subscriber terminal |
| CN102761778A (en) * | 2012-07-30 | 2012-10-31 | 山东泰信电子股份有限公司 | Data encrypting and decrypting system and method based on bidirectional terminal |
| CN102761777A (en) * | 2012-07-30 | 2012-10-31 | 山东泰信电子股份有限公司 | Multiple-CA (conditional access) simulcrypt system and method |
| CN102868918A (en) * | 2012-09-27 | 2013-01-09 | 北京视博数字电视科技有限公司 | User authorization method and user authorization system |
| CN107343210A (en) * | 2017-07-06 | 2017-11-10 | 成都睿胜科技有限公司 | Unidirectional CA EMM bag data sending methods |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029261A1 (en) * | 2018-08-10 | 2020-02-13 | 华为技术有限公司 | Uplink access method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69807221T2 (en) * | 1997-06-06 | 2003-03-27 | Thomson Multimedia Inc | CONDITIONAL ACCESS SYSTEM FOR SET TOP BOXES |
| DE29802270U1 (en) * | 1998-02-10 | 1998-04-30 | Scm Microsystems Gmbh | Multimedia system, portable control device and communication module for use in this system |
| JP2002529025A (en) * | 1998-10-27 | 2002-09-03 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Broadcast network with interactive services |
| CN1413024A (en) * | 2001-10-08 | 2003-04-23 | 北京中视联数字系统有限公司 | Digital TV user management system |
| SE520674C2 (en) * | 2001-12-14 | 2003-08-12 | Television And Wireless Applic | Method and system for conditional access |
| CN1607831A (en) * | 2003-10-13 | 2005-04-20 | 成都润网科技有限公司 | Bidirectional real-time authentication digital television conditional receiving system |
-
2003
- 2003-11-21 CN CNB2003101167742A patent/CN100373946C/en not_active Expired - Fee Related
-
2004
- 2004-11-22 WO PCT/CN2004/001324 patent/WO2005050990A1/en active Application Filing
-
2005
- 2005-10-14 HK HK05109086A patent/HK1077146A1/en not_active IP Right Cessation
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337478C (en) * | 2005-06-30 | 2007-09-12 | 广东省电信有限公司研究院 | A private key acquiring method for use in set-top box |
| CN101076109B (en) * | 2007-05-11 | 2010-05-19 | 天栢宽带网络科技（上海）有限公司 | Two-way CA system of digital TV-set and method for ordering and cancelling programm based on it |
| CN101582729B (en) * | 2009-05-26 | 2011-02-23 | 北京创毅视讯科技有限公司 | Method and system for acquiring service key, conditional access module and subscriber terminal |
| CN102761778A (en) * | 2012-07-30 | 2012-10-31 | 山东泰信电子股份有限公司 | Data encrypting and decrypting system and method based on bidirectional terminal |
| CN102761777A (en) * | 2012-07-30 | 2012-10-31 | 山东泰信电子股份有限公司 | Multiple-CA (conditional access) simulcrypt system and method |
| CN102761777B (en) * | 2012-07-30 | 2015-07-15 | 山东泰信电子股份有限公司 | Multiple-CA (conditional access) simulcrypt system and method |
| CN102761778B (en) * | 2012-07-30 | 2016-05-04 | 山东泰信电子股份有限公司 | A kind of data encrypting and deciphering system and method based on bidirectional terminal |
| CN102868918A (en) * | 2012-09-27 | 2013-01-09 | 北京视博数字电视科技有限公司 | User authorization method and user authorization system |
| CN107343210A (en) * | 2017-07-06 | 2017-11-10 | 成都睿胜科技有限公司 | Unidirectional CA EMM bag data sending methods |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1077146A1 (en) | 2006-02-03 |
| WO2005050990A1 (en) | 2005-06-02 |
| CN100373946C (en) | 2008-03-05 |
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