CN2859956Y - Set up box - Google Patents
Set up box Download PDFInfo
- Publication number
- CN2859956Y CN2859956Y CNU2005201142059U CN200520114205U CN2859956Y CN 2859956 Y CN2859956 Y CN 2859956Y CN U2005201142059 U CNU2005201142059 U CN U2005201142059U CN 200520114205 U CN200520114205 U CN 200520114205U CN 2859956 Y CN2859956 Y CN 2859956Y
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- CN
- China
- Prior art keywords
- top box
- processing module
- descrambler
- multichannel
- condition receiving
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Abstract
The utility model discloses a set-top box which belongs to a pay TV system field. The set-top box comprises a main set-top box having a tuner (1), a multi-channel condition receiving and processing module (4), a smart card (2), a multi-channel descrambler (5), an A/V decoder (3), an IP packaging module (6) and a network interface (7), and auxiliary set-top boxs; an output of the tuner is connected with the multi-channel condition receiving and processing module which is connected and intercommunicated with the smart card, an output of the multi-channel condition receiving and processing module is connected with the multi-channel descrambler, one output of the multi-channel descrambler is joined with the A/V decoder and the other output of the multi-channel descrambler is joined with the IP packaging module whose output is connected to the network interface communicated with the plurality of auxiliary set-top boxs by means of a network. The set-top box can simultaneously decode multi-path encrypted digital channels only by a smart card, thereby each family user only needs to pay a smart card.
Description
Technical field
The utility model belongs to field of pay television systems, particularly relates to a kind of set-top box that is used to realize the many television sets of an intelligent cassette tape.
Background technology
Digital Television be 21 century the information industry field have the most active industry of revolutionary development.Nearly 3.5 hundred million the simulated television users of China will transform to Digital Television, and therefore in nearest 10 years, the market demand of set-top box is very considerable.Operational mode according to present conditional access system (CAS), it all is the mode that a top box of digital machine is joined a sheet smart card, and Subscriber Management System (SMS) also mostly are quantity statistics numbers of users according to smart card, and calculated every month or annual service charge to the user.
With reference to figure 1, it shows the principle brief analysis of conditional access system.Set-top box obtains Program Association Table (PAT) and conditional access table (CAT) with the program transport streams demultiplexing, therefrom obtains user authorization management information (EMM) and authorizes enciphered message (ECM).Contain the authorization message whether user can watch certain program channel among the EMM, ECM contains the scrambling control word (CW) that is used for deciphering channel.EMM and ECM give intelligent card in processing by the CA intelligent card interface, smart card finds and checks the EMM that distributes to oneself therein, and it is decrypted the authorized key of computing with user key, with this authorization key ECM is decrypted computing again, obtain scrambling control word (CW), and give the scramble process circuit with CW corresponding program is carried out the descrambling computing, and the code stream behind the descrambling is exported to decoder or multimedia processor.
With reference to figure 2, it shows the prior art set-top box according to above-mentioned principle design.It has tuner, single channel condition receiving processing module, smart card, single channel descrambler, A/V decoder; The output of tuner links to each other with single channel condition receiving processing module, single channel condition receiving processing module is connected with smart card and interactive communication, the output of single channel condition receiving processing module is connected with the single channel descrambler, the output of single channel descrambler link to each other with the A/V decoder with TV that the A/V decoder is connected on show.Wherein:
Tuner extracts digital signal from the carrier wave of propagating by physical media (radio wave or coaxial cable).Its at first be tuned to characteristic frequency and filter carrier wave, then digital signal demodulation from carrier wave come out.Therefore, the signal that comes out from tuner has been the digital signal of broadcast program.
Smart card is the part of condition receiving system (CAS), and whom it is responsible for controlling can be watched and can when watch for what program.Commercial digital TV broadcast service uses CAS to encrypt and protect their programme content.Smart card comprises user's authorization message.The smart card inspection is included in the channel information in the broadcasting stream, thereby determines whether the user has the right to watch this channel.If the user has the right to watch, smart card then returns decryption key to be used to decipher specific channel.
Audio/video (A/V) decoder is the element that is used for the digital audio/video signals of descrambling is converted to analog audio/video signal, and conversion is for signal is presented on the conventional simulation TV.
Single channel condition receiving processing module is the core of traditional CAS, and it designs channel of single treatment.This module is coordinated to realize the most urgent task of commercial undertaking between broadcasting stream, smart card, descrambler, and it can be authentification of user, content verification and deciphering.This is the basis of commercial undertaking's success business model.Its workflow is as follows: this module obtains necessary channel information and authorized user message reprocessing broadcasting stream at it.This module then with the smart card reciprocation with authenticated user (if any), and check user's validity and the validity that this user watches this particular channel.If this user has the right to watch this channel, then it is worked to obtain decryption key with smart card, and this decryption key sends to descrambler with this particular channel of descrambling/deciphering.
The content descrambling that the single channel descrambler is used for particular channel is clear program stream, and it is from condition receiving processing module receiving and deciphering key, the decryption key and the broadcasting stream of particular channel is applied to Descrambling Algorithms, thereby produces the clear program stream of this channel.
Though above-mentioned technology can solve the problem of watching of Digital Television, for each domestic consumer, more may be that many TVs are arranged.According to prior art, want every TV and all can watch Digital Television, then must be equipped with set-top box according to the quantity of television set in the family.Like this, have in a family the subscriber household of several set-top box, he just is defaulted as a plurality of users by Subscriber Management System (SMS), and must all pay its expense to every card/each box.Such pattern obviously can not allow these buy the willing acceptance of domestic consumer of many set-top box.So in fact each digital-TV operator mode of all taking to subsidize set-top box and installation in a large number attracts clients.This has caused the huge cost pressure of television operator.
Summary of the invention
The purpose of this utility model is to provide a set-top box, and it uses a sheet smart card just can solve the working method of multichannel enciphered digital channel simultaneously, and is applied to need not to connect up at home on the wireless digital communication platform of one family formula.So not only saved the subsidy of digital-TV operator greatly, also effectively strengthened the attraction of Digital Television for the client for set-top box and installation.
The utility model set-top box comprises primary set-top box, and primary set-top box has tuner, condition receiving processing module, smart card, descrambler, A/V decoder; The output of tuner links to each other with the condition receiving processing module, and the condition receiving processing module is connected with smart card and interactive communication, and the output of condition receiving processing module is connected with descrambler; It is characterized in that: this set-top box also comprises a plurality of secondary set-top box, and secondary set-top box has A/V decoder separately; Described primary set-top box also comprises IP packetization module and network interface, described condition receiving processing module is a multichannel condition receiving processing module, described descrambler is the multichannel descrambler, one of output of described multichannel descrambler links to each other with the A/V decoder, all the other outputs of described multichannel descrambler link to each other with the IP packetization module, the output of IP packetization module links to each other with network interface, and network interface is communicated by letter with a plurality of secondary set-top box by means of network.
Described a plurality of secondary set-top box is 1-10.
Described multichannel condition receiving processing module is a 2-11 channel condition receiving processing module.
Described multichannel descrambler is a 2-11 channel descrambler.
Described network interface is to communicate by letter with secondary set-top box by wireless mode or Ethernet.
Described multichannel condition receiving processing module is coordinated to realize the hot job of authentification of user, content verification and deciphering on a plurality of channels simultaneously between a plurality of broadcasting streams, smart card, multichannel descrambler.2-11 channel and relevant channel information that multichannel condition receiving processing module is asked from a plurality of broadcasting stream demultiplexings, and they are multiplexed with a broadcasting stream again, with authentification of user, content verification and a plurality of secret key decryption that is used for carrying out simultaneously all these channels.
Described multichannel descrambler obtains a plurality of passwords also with a plurality of channels of these password descramblings from multichannel condition receiving processing module, thereby produces a plurality of streams of broadcasting clearly.One of described clear broadcasting stream is sent to the A/V decoder in the primary set-top box, to show on connected TV.
Described IP packetization module is carried out multiplexing to other the clear broadcasting stream from the multichannel descrambler and packing, and sends to other secondary set-top box through network interface.
Brief Description Of Drawings
Fig. 1 is the schematic diagram of conditional access system in the prior art.
Fig. 2 is the structure chart of prior art set-top box.
Fig. 3 is the utility model set-top box fundamental diagram.
Fig. 4 is the structure chart of the utility model set-top box.
Embodiment
Below the utility model set-top box is elaborated.
With reference to figure 3, it shows the basic principle that realizes a family cassette tape multimachine, is that the EMM/ECM order that all are relevant all unifies to carry out on the primary set-top box and handle, and does not then have smart card on the secondary set-top box.
Specifically, with reference to figure 4, the utility model set-top box, comprise primary set-top box and 2 secondary set-top box, secondary set-top box has A/V decoder 3 separately, and primary set-top box has tuner 1, multichannel condition receiving processing module 4, smart card 2, multichannel descrambler 5, A/V decoder 3, IP packetization module 6 and network interface 7; The output of tuner 1 links to each other with multichannel condition receiving processing module 4, and multichannel condition receiving processing module 4 is connected with smart card 2 and interactive communication; Multichannel condition receiving processing module 4 is similar to single channel condition receiving processing module on function, it is coordinated to realize the hot job of authentification of user, content verification and deciphering on a plurality of channels simultaneously between a plurality of broadcasting streams, smart card, multichannel descrambler.3 channels and relevant channel information that multichannel condition receiving processing module is asked from a plurality of broadcasting stream demultiplexings, and they are multiplexed with a broadcasting stream again, with authentification of user, content verification and a plurality of secret key decryption that is used for carrying out simultaneously all these channels, thereby can handle these separate channels simultaneously.The output of multichannel condition receiving processing module 4 is connected with multichannel descrambler 5, and multichannel descrambler 5 obtains a plurality of passwords and with these three channels of these password descramblings, broadcasts stream clearly thereby produce three from multichannel condition receiving processing module 4.One of described clear broadcasting stream is sent to the A/V decoder in the primary set-top box, to show on connected TV.All the other outputs of described multichannel descrambler link to each other with IP packetization module 6, and 6 pairs of clear broadcasting streams from the multichannel descrambler of IP packetization module carry out multiplexing and packing, and send to other secondary set-top box through network interface by wireless mode or Ethernet.
Therefore, each family only needs cover the utility model set-top box and only need pay the pairing cost of use of a sheet smart card, and need not to pay the expense of many cards.
Claims (10)
1, a kind of set-top box comprises primary set-top box, and primary set-top box has tuner, condition receiving processing module, smart card, descrambler, A/V decoder; The output of tuner links to each other with the condition receiving processing module, and the condition receiving processing module is connected with smart card and interactive communication, and the output of condition receiving processing module is connected with descrambler; It is characterized in that: this set-top box also comprises a plurality of secondary set-top box, and secondary set-top box has A/V decoder (3) separately; Described primary set-top box also comprises IP packetization module (6) and network interface (7), described condition receiving processing module is a multichannel condition receiving processing module (4), described descrambler is multichannel descrambler (5), one of output of described multichannel descrambler (5) links to each other with A/V decoder (3), all the other outputs of described multichannel descrambler link to each other with IP packetization module (6), the output of IP packetization module (6) links to each other with network interface (7), and network interface is communicated by letter with a plurality of secondary set-top box by means of network.
2, set-top box according to claim 1, wherein said a plurality of secondary set-top box are 1-10.
3, set-top box according to claim 1, wherein said multichannel condition receiving processing module is a 2-11 channel condition receiving processing module.
4, set-top box according to claim 1, wherein said multichannel descrambler are 2-11 channel descrambler.
5, set-top box according to claim 1, wherein said network interface are to communicate by letter with secondary set-top box by wireless mode or Ethernet.
6, set-top box according to claim 1, wherein said multichannel condition receiving processing module is coordinated to realize the hot job of authentification of user, content verification and deciphering on a plurality of channels simultaneously between a plurality of broadcasting streams, smart card, multichannel descrambler.
7, set-top box according to claim 6,2-11 channel and relevant channel information that wherein said multichannel condition receiving processing module is asked from a plurality of broadcasting stream demultiplexings, and they are multiplexed with a broadcasting stream again, with authentification of user, content verification and a plurality of secret key decryption that is used for carrying out simultaneously all these channels.
8, set-top box according to claim 1, wherein said multichannel descrambler obtains a plurality of passwords also with a plurality of channels of these password descramblings from multichannel condition receiving processing module, thereby produces a plurality of streams of broadcasting clearly.
9, set-top box according to claim 8, one of wherein said clear broadcasting stream is sent to the A/V decoder in the primary set-top box, to show on connected TV.
10, set-top box according to claim 9, wherein said IP packetization module are carried out multiplexing to other the clear broadcasting stream from the multichannel descrambler and packing, and send to other secondary set-top box through network interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201142059U CN2859956Y (en) | 2005-07-20 | 2005-07-20 | Set up box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201142059U CN2859956Y (en) | 2005-07-20 | 2005-07-20 | Set up box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2859956Y true CN2859956Y (en) | 2007-01-17 |
Family
ID=37612811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201142059U Expired - Fee Related CN2859956Y (en) | 2005-07-20 | 2005-07-20 | Set up box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2859956Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018284B (en) * | 2007-03-06 | 2010-11-03 | 成都金亚科技股份有限公司 | A CATV set-top-box mother-son machine system |
| CN102075808A (en) * | 2011-01-25 | 2011-05-25 | 四川长虹电器股份有限公司 | Method for realizing multi-conditional access (CA) coexistence in set top box |
| CN102131065A (en) * | 2011-05-04 | 2011-07-20 | 深圳市同洲电子股份有限公司 | Method and system for controlling digital television primary-secondary machine, primary machine and secondary machines |
| CN102316374A (en) * | 2011-07-21 | 2012-01-11 | 深圳市九洲电器有限公司 | Household set-top box system |
| CN102497588A (en) * | 2011-11-22 | 2012-06-13 | 四川长虹电器股份有限公司 | Router with smart card for digital televisions and descrambling method |
| WO2014082498A1 (en) * | 2012-11-28 | 2014-06-05 | 中兴通讯股份有限公司 | Audio-video signal processing device and an audio-video playing device, system and method |
| CN105959755A (en) * | 2016-05-31 | 2016-09-21 | 烽火通信科技股份有限公司 | LTE uplink intelligent set top box system and implementation method therefor |
| 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 |
-
2005
- 2005-07-20 CN CNU2005201142059U patent/CN2859956Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018284B (en) * | 2007-03-06 | 2010-11-03 | 成都金亚科技股份有限公司 | A CATV set-top-box mother-son machine system |
| CN102075808A (en) * | 2011-01-25 | 2011-05-25 | 四川长虹电器股份有限公司 | Method for realizing multi-conditional access (CA) coexistence in set top box |
| CN102131065A (en) * | 2011-05-04 | 2011-07-20 | 深圳市同洲电子股份有限公司 | Method and system for controlling digital television primary-secondary machine, primary machine and secondary machines |
| CN102316374A (en) * | 2011-07-21 | 2012-01-11 | 深圳市九洲电器有限公司 | Household set-top box system |
| CN102497588A (en) * | 2011-11-22 | 2012-06-13 | 四川长虹电器股份有限公司 | Router with smart card for digital televisions and descrambling method |
| CN102497588B (en) * | 2011-11-22 | 2014-06-04 | 四川长虹电器股份有限公司 | Router with smart card for digital televisions and descrambling method |
| WO2014082498A1 (en) * | 2012-11-28 | 2014-06-05 | 中兴通讯股份有限公司 | Audio-video signal processing device and an audio-video playing device, system and method |
| CN103856808A (en) * | 2012-11-28 | 2014-06-11 | 中兴通讯股份有限公司 | Audio-and-video signal processing device, playing device, system and method |
| CN103856808B (en) * | 2012-11-28 | 2019-05-21 | 中兴通讯股份有限公司 | Audio-video signal processing equipment, playback equipment, system and method |
| CN105959755A (en) * | 2016-05-31 | 2016-09-21 | 烽火通信科技股份有限公司 | LTE uplink intelligent set top box system and implementation method therefor |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070117 Termination date: 20100720 |