CN101198010A - Digital television user authorization method - Google Patents
Digital television user authorization method Download PDFInfo
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- CN101198010A CN101198010A CNA2006101193238A CN200610119323A CN101198010A CN 101198010 A CN101198010 A CN 101198010A CN A2006101193238 A CNA2006101193238 A CN A2006101193238A CN 200610119323 A CN200610119323 A CN 200610119323A CN 101198010 A CN101198010 A CN 101198010A
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- authorization
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- authorization message
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- top box
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Abstract
The invention discloses a digital television user authorization method capable of sending an authorization message to a digital television user without a complex CA system, greatly reducing the overall cost of the system, and also meeting the requirements of a digital television head end system. The technical proposal is that: the authorization method comprises the following steps: defining the authorization message; defining a packaging standard of a transmission stream containing the authorization message according to the DVB standard; packaging the authorization message into the transmission stream according to the packaging standard after encoding the authorization message; a set-top box receiving the transmission stream, carrying out addressing and checking whether authorization is obtained or not after finding the authorization message. The invention is applicable to the authorization during digital television software development.
Description
Technical field
The present invention relates to a kind of authorization method, relate in particular to the authorization method in a kind of digital television software exploitation.
Background technology
Along with the acceleration of Digital Television is promoted, Digital Television is more and more universal.Various sponsored programs such as quasi-video request program etc., all will have corresponding charge method.Guarantee carrying out of these value-added services, just must encrypt, simultaneously the user is authorized to have only authorized user just can enjoy the right of the value-added service of watching these charges to these information.
Generally adopt the CA system to come the user is carried out the authorization message transmission and authorized user is managed at present, but existing C A system definition is very complicated, whole system provide and very expensive, be unfavorable for popularizing of Digital Television.
Summary of the invention
The object of the present invention is to provide a kind of authorization method of digital cable customers, it makes does not need the CA system of complexity to the transmission of the authorization message of digital cable customers, greatly reduce the cost of whole system, can finely satisfy the requirement of Digital Television head-end system again.
Technical scheme of the present invention is: a kind of authorization method of digital cable customers comprises:
The definition authorization message;
In the give a definition packing standard of the transport stream that comprises those authorization messages of the standard of DVB;
After those authorization messages are encoded, those authorization messages are packaged into transport stream with this packing standard;
Set-top box receives this transport stream, carries out addressing, finds and checks whether it obtains the authorization after the authorization message wherein.
The authorization method of above-mentioned digital cable customers, wherein, described authorization message is stored in one or more bytes, and each bit in the byte is represented a kind of licensing status.
The authorization method of above-mentioned digital cable customers, wherein, the process of definition packing standard further comprises:
The definition of privately owned field, the authorization message of 256 set-top box of each field carrying, those authorization messages are stored in this field continuously;
Set-top box addressing definition, not take the addressing that the mode of playing bandwidth obtains 4 bytes, the table_id_extension field that preceding two bytes utilize this privately owned field to define is carried out addressing, the 3rd the versionnumber field that byte adopts this privately owned field to define, the 4th byte is that a set-top box information takies a byte;
Information on services points to definition, and the NIT table by information on services indicates pairing PID of this authorization message code stream and sublist thereof.
The authorization method of above-mentioned digital cable customers, wherein, authorization message adopts static Huffman encoding.
The relative prior art of the present invention has following beneficial effect: the authoring system of digital cable customers of the present invention is followed the definition according to the DVB standard fully, on the digital television service platform authorization message is set, and is packaged into to be sent to terminal set top box after TS flows.User's receiving terminal of only obtaining the authorization could normally be watched program.The present invention is not because need be by the CA system, makes the cost that has reduced system when satisfying subscriber authorisation.
Description of drawings
Fig. 1 is the flow chart of embodiment of the authorization method of digital cable customers of the present invention.
Fig. 2 is the code schematic diagram of privately owned Field Definition of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 shows the flow process of authorization method of the present invention, is the detailed description to each step in the flow process below.
Step S1: definition authorization message.The authorization message of supposing each set-top box in the present embodiment is a byte, and 8 bit wherein can identify 8 kinds of different licensing statuss.If licensing status during more than 8, can be extended to a plurality of bytes as requested.Before set-top box was dispatched from the factory, the authorization command of each set-top box can be configured to default value.
Step S2: in the give a definition packing standard of the transport stream that comprises these authorization messages of DVB standard.The authorization message of all set-top box all is packaged into the TS code stream according to the standard of DVB, is referred to as the AUTS code stream.
The standard of packing can comprise:
The definition of privately owned field (private-section).The authorization message of 256 set-top box of each field (section) carrying, these 256 information leave in the section continuously.The concrete mode of privately owned Field Definition as shown in Figure 2.
Set-top box addressing definition has been adopted not take the addressing that the method for playing bandwidth obtains 4 bytes, and addressing range reaches 4294967295 space, can support 4294967295 user's receiving terminals.The table_id_extension field that wherein preceding 2 bytes adopt private-section to define is carried out addressing, the 3rd the versionnumber field that byte adopts private-section to define, the 4th byte is that a user profile takies a byte, the length of private-section is 256 bytes, address information all passes to the STB terminal user by the private-section intrinsic head and the form of data load like this, and does not need to take the broadcast bandwidth.
Information on services points to definition, and the sublist table_id that the NIT table by SI (Service Information, information on services) indicates under which PID and which PID is the authorization message code stream.Certainly, also can adopt other for example to point in other the table such as SDT table, BAT table.
Step S3: after these authorization messages are encoded, be packaged into transport stream with the packing standard of step S2 definition.The coded system of authorization message can have multiple, wherein a kind of coded system preferably is static Huffman encoding, at first to needing coded data to carry out two-pass scan: first pass is added up the frequency that each character occurs in the former data, the frequency values that utilization obtains is created Huffman tree, and an information of tree is preserved, the frequency values of character 0～255 is got up with the length sequential storage of 2～4 bytes, carry out decompress(ion) so that create same Huffman tree during decompress(ion).The Huffman tree that then obtains according to first pass for second time is encoded, and the code word that obtains behind the coding is stored.
Step S4: set-top box receives transport stream, carries out addressing, checks whether it obtains the authorization after finding authorization message wherein.If obtain the authorization, then can normally use, otherwise will be under an embargo.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (4)
1. the authorization method of a digital cable customers comprises:
The definition authorization message;
In the give a definition packing standard of the transport stream that comprises those authorization messages of the standard of DVB;
After those authorization messages are encoded, those authorization messages are packaged into transport stream with this packing standard;
Set-top box receives this transport stream, carries out addressing, finds and checks whether it obtains the authorization after the authorization message wherein.
2. the authorization method of digital cable customers according to claim 1 is characterized in that, described authorization message is stored in one or more bytes, and each bit in the byte is represented a kind of licensing status.
3. the authorization method of digital cable customers according to claim 1 is characterized in that, the process of definition packing standard further comprises:
The definition of privately owned field, the authorization message of 256 set-top box of each field carrying, those authorization messages are stored in this field continuously;
Set-top box addressing definition, not take the addressing that the mode of playing bandwidth obtains 4 bytes, the table_id_extension field that preceding two bytes utilize this privately owned field to define is carried out addressing, the 3rd the versionnumber field that byte adopts this privately owned field to define, the 4th byte is that a set-top box information takies a byte;
Information on services points to definition, and the NIT table by information on services indicates pairing PID of this authorization message code stream and sublist thereof.
4. the authorization method of digital cable customers according to claim 1 is characterized in that, authorization message adopts static Huffman encoding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610119323A CN100589550C (en) | 2006-12-08 | 2006-12-08 | Digital television user authorization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610119323A CN100589550C (en) | 2006-12-08 | 2006-12-08 | Digital television user authorization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101198010A true CN101198010A (en) | 2008-06-11 |
| CN100589550C CN100589550C (en) | 2010-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610119323A Expired - Fee Related CN100589550C (en) | 2006-12-08 | 2006-12-08 | Digital television user authorization method |
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| Country | Link |
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| CN (1) | CN100589550C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929659A (en) * | 2014-04-28 | 2014-07-16 | 四川金网通电子科技有限公司 | Method for controlling CA authorization prompts from basic frequency point and system thereof |
| CN106331868A (en) * | 2016-09-14 | 2017-01-11 | 北京四达时代软件技术股份有限公司 | Digital television program broadcast control method, terminal set-top box, and front-end broadcast system |
| CN113938716A (en) * | 2021-09-29 | 2022-01-14 | 北京风行在线技术有限公司 | Video authentication method and system based on bitmap storage |
-
2006
- 2006-12-08 CN CN200610119323A patent/CN100589550C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929659A (en) * | 2014-04-28 | 2014-07-16 | 四川金网通电子科技有限公司 | Method for controlling CA authorization prompts from basic frequency point and system thereof |
| CN103929659B (en) * | 2014-04-28 | 2017-10-27 | 四川金网通电子科技有限公司 | CA is controlled to authorize the method and its system pointed out from dominant frequency point |
| CN106331868A (en) * | 2016-09-14 | 2017-01-11 | 北京四达时代软件技术股份有限公司 | Digital television program broadcast control method, terminal set-top box, and front-end broadcast system |
| CN106331868B (en) * | 2016-09-14 | 2019-05-14 | 北京四达时代软件技术股份有限公司 | Digital television program control method for playing back, terminal set top box and front end broadcasting system |
| CN113938716A (en) * | 2021-09-29 | 2022-01-14 | 北京风行在线技术有限公司 | Video authentication method and system based on bitmap storage |
| CN113938716B (en) * | 2021-09-29 | 2024-03-22 | 北京风行在线技术有限公司 | Video authentication method and system based on bitmap storage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100589550C (en) | 2010-02-10 |
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Granted publication date: 20100210 Termination date: 20171208 |