CN101247503A - Digital multimedia broadcasting system and authorization method thereof - Google Patents
Digital multimedia broadcasting system and authorization method thereof Download PDFInfo
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- CN101247503A CN101247503A CNA200710063966XA CN200710063966A CN101247503A CN 101247503 A CN101247503 A CN 101247503A CN A200710063966X A CNA200710063966X A CN A200710063966XA CN 200710063966 A CN200710063966 A CN 200710063966A CN 101247503 A CN101247503 A CN 101247503A
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Abstract
The present invention provides a digital multimedia broadcasting system and the authorizing method thereof. The digital multimedia broadcasting system comprises a front subsystem, an authorizing subsystem and a terminal subsystem, wherein, the front subsystem is used for transmitting the broadcasting program which is ciphered by the authorizing subsystem to the terminal subsystem. The terminal subsystem comprises a plurality of terminals provided with duplex channel, and the authorizing method comprises the following procedures: activating the terminal; transmitting the authorizing application by the terminal subscriber to the authorization subsystem for requesting to transmit the authorization information comprising the encryption key; informing the front subsystem and transmitting the authorization information to the terminal through the broadcasting channel when the authorizing subsystem have received the authorization request; and obtaining the authorization system by the terminal and executing the subsequent operation. The system and method presented by the invention use the mode of informing the front end broadcasting to transmit the authorization information when the terminal is on-line for authorizing the terminal. Although the capacity of the broadcasting channel is similarly taken, but the authorization information is transmitted according to request, a plurality of times of circulating broadcasting need not to be executed. The capacity of the broadcasting channel being taken and the time are reduced.
Description
Technical field
The present invention relates to DMB, relate in particular to a kind of digital multimedia broadcasting system and authorization method thereof.
Background technology
Existing broadcast system is unidirectional information distributing system, and its feature is a bit to send, and multiple spot receives, and unidirectional information is propagated, and it can give thousands of terminals with a large amount of information distributings simultaneously.Typically broadcast system for example: traditional broadcasting, TV etc.DMB is the digitized broadcasting system, is worldwide widely used at present information release model, and ripe market comprises: digital television broadcasting is cable, ground, satellite etc. for example; Digital audio broadcasting is cable, ground, satellite etc. for example.On the market many new Digital television broadcastings have also appearred simultaneously, as: Mobile Multimedia Broadcasting, IP multimedia broadcasting etc.
As shown in Figure 1, existing broadcast system 1 comprises several parts such as front terminal system 10, terminal subsystem 20, authorization subsystem 30 usually.Wherein, front terminal system 10 is responsible for that digital programs broadcast and management, and for example, digital television station front terminal system broadcasts digital broadcast program, managing programm broadcast time etc.; Terminal subsystem 20 comprises a plurality of terminals, and it is the receiving equipment of broadcast program, respectively the receiving front-end subsystem broadcast program of broadcasting and play or handle; Authorization subsystem 30 is responsible for the broadcast program of front terminal system is carried out encipherment protection; after the content of encrypted protection sends terminal subsystem to; must could be play by terminal deciphering through the affirmation of authorization subsystem 30; and terminal must obtain necessary mandate, could play broadcasted content.
Under the condition of conventional digital multimedia broadcasting, because broadcast system is unidirectional, and the available machine time of terminal is uncertain, therefore adopts broadcast (sites) in turn to send usually to the mandate of single terminal.Front terminal system 10 behind the starting up of terminal, just can receive the authorization message to oneself with the authorization message broadcast (sites) in turn in a period of time.If a large amount of terminals is authorized, just need be to the mandate of each terminal broadcast (sites) in turn all, as shown in Figure 1.
Because the broadcast channel capacity of digital multimedia broadcasting system 1 is limited, and terminal quantity is in continuous increase, for example in existing digital multimedia broadcasting system, usually can support the terminal use of 1,000,000 magnitudes, in this case, the circulation mandate can take bigger channel capacity, if channel capacity is also limited, then once the time of mandate will extend in the circulation transmission.This will cause terminal can not in time receive authorization message.
At the new Digital multi-media broadcasting system, in the satellite mobile multimedia broadcast system, because the terminal quantity super large may reach 100,000,000 users, therefore and the broadcast channel capacity is very limited, adopts the mode of broadcast type mandate can not reach the needs of system's operation fully.
The main mode of existing realization digital multimedia broadcasting system mandate is that the front terminal system is with the authorization message broadcast (sites) in turn.Broadcast (sites) in turn why is because the terminal reception of when starting shooting can not be known by the front terminal system.For example: in existing digital television broadcasting system, terminal is the TV set-top box of family, and the TV set-top box available machine time of each family and duration all are uncertain, see TV possible every night, also may see one time TV a week; May be to see 2 hours, also may be to see 10 minutes.Therefore, by the broadcast (sites) in turn mandate, can guarantee as long as starting up of terminal and continue for some time after, just can receive authorization message.
Suppose that the front terminal system need support 1,000,000 authorization terminal.Each terminal has 2 authorization messages, and every authorization message size is 50 bytes.Front terminal system utilizable mandate broadcast channel capacity is 500kbps.The time that can calculate the mandate broadcast transmission with 1,000,000 terminals so once needs is: 1,000,000 * 2 * 50 * 8/500k=1600 second, about 25 minutes.
That is to say that starting up of terminal just can guarantee to receive mandate at least 25 minutes.If the authorized quantity of each terminal increases or number of terminals increases, this time also can be multiplied.If this time has surpassed the average available machine time length of ordinary terminal, then have a lot of terminals and can't in the available machine time, receive mandate, can make a big impact to front end operation and terminal use's use.
Under the situation that above-mentioned mandate circulation send mode is few at terminal quantity, authorized quantity is few, the broadcast channel capacity is sufficient, because circulation sends the time less of once authorizing, therefore front end operation and terminal use being used does not have big influence substantially.But in the new digital multi-media broadcasting system, terminal quantity possibility super large reaches 100,000,000 users, and the broadcast channel finite capacity has only below the 500kbps, and then this circulation authorizes send mode can not satisfy the demands fully.This defective is that the characteristics of this mandate broadcast technology itself cause.When start shooting because can not know terminal, so must adopt the mode of broadcast (sites) in turn to send mandate, when causing the large user to measure, user's experience descends.
Summary of the invention
For solve the traditional broadcast mandate can not be in time when the large user measures to the problem of authorization terminal, the present invention proposes the authorization under a kind of new Digital multimedia broadcast conditional, this mode is applied to digital multimedia broadcasting system, can solve the problem to authorization terminal well.
The present invention proposes a kind of authorization method of digital multimedia broadcasting system, this digital multimedia broadcasting system comprises front terminal system, authorization subsystem and terminal subsystem, wherein, the front terminal system is used to issue the broadcast program of encrypting through authorization subsystem and arrives described terminal subsystem, described terminal subsystem includes a plurality of terminals, and this authorization method comprises the following steps: steps A: starting up of terminal; Step B: the terminal use sends authorized application to authorization subsystem, and request sends the authorization message that includes encryption key; Step C: after authorization subsystem receives authorized application, notice front terminal system, the front terminal system sends to described terminal with authorization message by broadcast channel; Step D: the terminal information of obtaining the authorization, carry out subsequent operation.
Wherein, in step B, the terminal use sends authorized application and comprises to the step of authorization subsystem: the terminal use applies for obtaining the authorization by the front end website of login authorization subsystem.
Wherein, in step B, the terminal use sends authorized application and comprises to the step of authorization subsystem: the make a telephone call to front end customer service application of authorization subsystem of terminal use is obtained the authorization.
Wherein, in step B, the terminal use sends authorized application and comprises to the step of authorization subsystem:
The terminal use sends the authorized application short message and obtains the authorization to the front end customer side application of authorization subsystem.
Wherein, step D comprises: terminal is play and/or is handled described broadcast program deciphering back according to the encryption key in the authorization message.
The present invention also proposes a kind of digital multimedia broadcasting system, comprise front terminal system, authorization subsystem and the terminal subsystem that comprises a plurality of terminals, wherein, described front terminal system is used to issue the broadcast program encrypted through authorization subsystem to described terminal subsystem; Described authorization subsystem and front terminal system and terminal subsystem are coupled, and are used for informing that to described broadcast program encryption and according to terminal use's authorized application the front terminal system sends authorization message to described terminal; Described terminal subsystem and aforementioned front terminal system and aforementioned authorization subsystem are coupled, and are used to receive broadcast program, send authorized application and receive authorization message, and play and/or handle after utilizing encryption key in the authorization message to program decryption.
In addition, apply for obtaining the authorization in the described terminal use front end website of logining authorization subsystem.
In addition, described terminal use dials the authorized application phone and obtains the authorization to the application of the front end customer side of authorization subsystem.
In addition, the terminal use sends the authorized application short message and obtains the authorization to the application of the front end customer side of authorization subsystem.
The system and method that the present invention proposes is after utilizing terminal online, the method broadcast transmission authorization message of notice front end.Advantage is:
1, once authorizes and get final product, broadcast (sites) in turn repeatedly, channel capacity that reduces to take and time;
2, in broadcast channel capacity tolerance band, can support the authorization terminal of super large quantity;
No matter what of 3 terminal quantities, terminal can in time be obtained mandate, and operation system and end-user experience are all had very big benefit.
Description of drawings
Fig. 1 is the structural representation of existing broadcast system;
Fig. 2 is the structural representation of digital multimedia broadcasting system of the present invention;
Fig. 3 is the flow chart of the embodiment of authorization method of the present invention.
Embodiment
Core content of the present invention is: after utilizing terminal online, the mode of notice front end broadcast transmission authorization message is to authorization terminal.The present invention still is to use broadcast mode to send authorization message, yet is not use broadcast (sites) in turn authorization as described in the prior art, but according to the application of terminal, only broadcast transmission authorization message in needs.
Authorizing is exactly the terminal that the authorization message that comprises the program encryption key is sent to appointment, does not have the terminal of authorized information just can't handle program like this, and the terminal of the information of only obtaining the authorization could be handled program.
Further describe technical scheme of the present invention below in conjunction with the drawings and specific embodiments.
Fig. 2 is the structural representation of digital multimedia broadcasting system 1 ' of the present invention, and as shown in Figure 2, this broadcast system 1 ' comprises front terminal system 10 ', terminal subsystem 20 ' and authorization subsystem 30 ' at least.Wherein, front terminal system 10 ' is responsible for digital program and broadcasts and manage, for example: digital television station front end subsystem responsible is broadcasted the time of digital broadcast program, managing programm broadcast etc., and in addition, it also sends the terminal of authorization message to appointment according to the notice of authorization subsystem 30 '; Authorization subsystem 30 ' is coupled respectively with front terminal system 10 ' and terminal subsystem 20 ', it is responsible for the broadcast program of front terminal system 10 ' is encrypted, receive the authorized application that particular terminal sends, and notice front terminal system 10 ' sends authorization message to described particular terminal; Terminal subsystem 20 ' includes a plurality of terminals 201
n(n is a positive integer), it is the receiving equipment of broadcast program, be responsible for simultaneously sending authorized application to authorization subsystem, send authorization message with the request front end, its utilizes the encryption key in the authorization message that broadcast program is decrypted after receiving broadcast program, then plays or subsequent operation such as processing again.
Need to prove, the obtain the authorization mode of information of terminal of the present invention is: behind starting up of terminal, user by this terminal can send authorization message by certain mode notified on authorization subsystem 30 ', then send authorization message to above-mentioned terminal by authorization subsystem 30 ' notice front terminal system 10 ', this terminal can receive required authorization message, and then the deciphering broadcast program, play, subsequent operation such as processing.
And that terminal use's notified on authorization subsystem 30 ' can send the mode of authorization message is varied, and the mode of front end website that for example can be by the login authorization subsystem applies for authorizing; The perhaps mode of front end customer service phone that also can be by directly dialing this authorization subsystem; Also or can send short message, the fax or the like, the present invention not with this as restriction.
Enumerating preferred embodiment at authorization method of the present invention below describes.
Please refer to Fig. 3, present embodiment realizes that the step of method of the present invention is as follows:
Step 300: starting up of terminal;
Step 302: the terminal use sends authorized application to authorization subsystem, and request sends the authorization message that includes encryption key;
Step 304: after authorization subsystem receives authorized application, notice front terminal system, the front terminal system sends to described terminal with authorization message by broadcast channel;
Step 306: terminal is obtained the authorization, and carries out subsequent operation.
In above-mentioned steps 300, terminal keeps open state, to guarantee to receive smoothly authorization message.
In above-mentioned steps 302, the terminal use can for example can apply for authorizing by variety of way to authorization subsystem application mandate by the front end website of login authorization subsystem; Also can apply for authorizing by the front end customer service phone of directly dialing authorization subsystem; Or can authorize note, fax to authorization subsystem or the like mode by sending application, the present invention not with this as restriction.Above-mentioned concrete realizing method has been widely used in each technical field, does not repeat them here.
In above-mentioned steps 304, the front terminal system obtains the authorized application of above-mentioned terminal from authorization subsystem, promptly can send authorization message to above-mentioned terminal by broadcast channel, because this authorization message and acyclic transmission, therefore, although it also takies broadcast channel, but owing to be to send as required, saved the broadcast channel capacity greatly, again because terminal is in open state, can receive authorization message at any time, therefore also save the time simultaneously.
In above-mentioned steps 306, terminal has received authorization message, can utilize the encryption key in the authorization message that received broadcast program is deciphered, thereby carries out subsequent operations such as broadcast program, processing programme content.
Here need to prove, can comprise some identification terminals or user's information in terminal use's the authorized application, so that front terminal system distributing authentication information according to this avoids mistake to send out.Certainly, also can comprise the information of paying the fees in the above-mentioned authorized application, so that the judgement of carrying out disbursement and sattlement or whether authorizing.
In order to make reading public can know application of the present invention, enumerate application example below and further specify the present invention.
Suppose that the front terminal system has issued a movie program by broadcast mode, and this grade program only can be watched just after obtaining the authorization.At this moment, terminal 201
2Start, the user of this terminal wants to see this grade program, so it has dialed the customer service phone of authorization subsystem, require the mandate of this grade program, the information of oneself is provided simultaneously, so that front terminal system distributing authentication information according to this, after phone is received in the customer side of authorization subsystem, promptly notify the front terminal system to arrive above-mentioned terminal according to the end message distributing authentication information in own peculiar mode, the front terminal system is about to authorization message and has been issued to above-mentioned terminal immediately, so far, the terminal use can watch this grade program according to this authorization message.
The method of digital multimedia broadcasting system broadcast (sites) in turn mandate in the prior art, after " online broadcasting mandate " of the present invention scheme utilizes terminal online, the method broadcast transmission mandate of notice front end.Because broadcast (sites) in turn repeatedly only needs once to authorize to get final product, reduced the capacity and the time of the broadcast channel that takies.And in broadcast channel capacity tolerance band, can support the authorization terminal of super large quantity, and suppose that the front terminal system supports 100,000,000 users, each user application in every month is authorized 2 times.Then average per minute front end system need send authorized quantity and be: 100,000,000 * 2/ (30*24*60)=about 30,000, need send each second and authorize 500.If every authorization message size is 50 bytes, the mandate broadcasting desired volume that can calculate terminal so is 500 * 50 * 8=200kbps.In addition, no matter what of terminal quantity, terminal can in time be obtained mandate, and operation system and end-user experience are all had very big benefit.
Above embodiment only is explanation the present invention, and is not as restriction with this.
Claims (9)
1. the authorization method of a digital multimedia broadcasting system, this digital multimedia broadcasting system comprises front terminal system, authorization subsystem and terminal subsystem, wherein, the front terminal system is used to issue the broadcast program of encrypting through authorization subsystem and arrives described terminal subsystem, described terminal subsystem includes a plurality of terminals, it is characterized in that this authorization method comprises the following steps:
Steps A: starting up of terminal;
Step B: the terminal use sends authorized application to authorization subsystem, and request sends the authorization message that includes encryption key;
Step C: after authorization subsystem receives authorized application, notice front terminal system, the front terminal system sends to described terminal with authorization message by broadcast channel;
Step D: terminal is obtained the authorization, and carries out subsequent operation.
2. authorization method according to claim 1 is characterized in that, in step B, the terminal use sends authorized application and comprises to the step of authorization subsystem:
The terminal use logins the front end website application of authorization subsystem and obtains the authorization.
3. authorization method according to claim 1 is characterized in that, in step B, the terminal use sends authorized application and comprises to the step of authorization subsystem:
The terminal use dials the authorized application phone and obtains the authorization to the front end customer side application of authorization subsystem.
4. authorization method according to claim 1 is characterized in that, in step B, the terminal use sends authorized application and comprises to the step of authorization subsystem:
The terminal use sends the authorized application short message and obtains the authorization to the front end customer side application of authorization subsystem.
5. authorization method according to claim 1 is characterized in that step D comprises:
Terminal is play and/or is handled described broadcast program deciphering back according to the encryption key in the authorization message.
6. a digital multimedia broadcasting system comprises front terminal system, authorization subsystem and the terminal subsystem that comprises a plurality of terminals, it is characterized in that:
Described front terminal system is used to issue the broadcast program encrypted through authorization subsystem to described terminal subsystem;
Described authorization subsystem and front terminal system and terminal subsystem are coupled, and are used for informing that to described broadcast program encryption and according to terminal use's authorized application the front terminal system sends authorization message to described terminal;
Described terminal subsystem and aforementioned front terminal system and aforementioned authorization subsystem are coupled, and are used to receive broadcast program, send authorized application and receive authorization message, and play and/or handle after utilizing encryption key in the authorization message to program decryption.
7. broadcast system according to claim 6 is characterized in that, described terminal use logins the front end website of authorization subsystem and applies for obtaining the authorization.
8. broadcast system according to claim 6 is characterized in that, described terminal use dials the authorized application phone and obtains the authorization to the front end customer side application of authorization subsystem.
9. broadcast system according to claim 6 is characterized in that, the terminal use sends the authorized application short message and obtains the authorization to the front end customer side application of authorization subsystem.
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| CNA200710063966XA CN101247503A (en) | 2007-02-15 | 2007-02-15 | Digital multimedia broadcasting system and authorization method thereof |
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| CNA200710063966XA CN101247503A (en) | 2007-02-15 | 2007-02-15 | Digital multimedia broadcasting system and authorization method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998164B (en) * | 2009-08-17 | 2013-08-07 | 北京视博数字电视科技有限公司 | Program information generating method and terminal device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998164B (en) * | 2009-08-17 | 2013-08-07 | 北京视博数字电视科技有限公司 | Program information generating method and terminal device |
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Open date: 20080820 |