CN1835552A - Device and method of realizing expendable machine card separation in digital television system - Google Patents
Device and method of realizing expendable machine card separation in digital television system Download PDFInfo
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- CN1835552A CN1835552A CNA2005101353872A CN200510135387A CN1835552A CN 1835552 A CN1835552 A CN 1835552A CN A2005101353872 A CNA2005101353872 A CN A2005101353872A CN 200510135387 A CN200510135387 A CN 200510135387A CN 1835552 A CN1835552 A CN 1835552A
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Abstract
The apparatus comprises a mainframe, an IC card and a USB card. The mainframe comprises a core integrated circuit for demodulating, de-multiplexing and decoding the digital TV program. The mainframe and the IC card are connected through the hardware interface of the IC card. In the IC card there is a conditionally receiving system, for decoding the authorization data and encryption control word of digital TV, for use in controlling the watching right of user to the specific TV program. In the USB card there is a value added service unit for de-multiplexing, de-scrambling and decoding the digital TV signals. The mainframe is connected to USB card through the hardware interface of the USB card. The IC card and USB card are connected through communication bus in the mainframe.
Description
Technical field
The present invention relates to the cable TV technical field, realize the expendable machine card separation device and method in particularly a kind of digital television system.
Background technology
In digital television system, can condition receiving system (Conditional Access System:CAS) be for commercial object some broadcast service to be implemented access control, determine a digital receiving equipment specific broadcast program is presented to end user's system.Say to narrow sense, the basic purpose of CAS is in television system the user to be carried out authorization control and empowerment management, thereby realize the paid service of Fare Collection System, it guarantees that the user who has authorized can receive corresponding mandate TV programme and service business, and undelegated user then can't obtain this kind business.
Separation between machine and card is necessary condition and the basic guarantee that realizes that the level of digital television system is sold and developed in a healthy way at i.e. separating of CAS and main frame (set-top box or all-in-one), is decided to be the fundamental state policy of China's Digital Television development by the Ministry of Information Industry and General Bureau of Radio, Film and Television.
Up to the present, the scheme of separation between machine and card has three kinds, is respectively: based on the kilocalorie scheme of pcmcia interface, USB interface-based kilocalorie scheme with based on the lesser calorie scheme of integrated circuit (IC) card.Wherein, the core concept based on the kilocalorie scheme of PCMCIA and USB interface is to be realized demultiplexing, descrambling, decoding and the complete CA authentication and the deciphering of all digital television programs by kilocalorie.Based on the kilocalorie of PCMCIA and USB interface have higher communicate by letter, calculating and storage capacity, therefore, the kilocalorie scheme can realize the separation between machine and card of Digital Television basic service and preferably such as the expansion of value-added services such as Internet visit, video detection, enhanced electron program menu and interactive game.The core concept of lesser calorie scheme is to be realized authentication and the deciphering of CAS by IC-card, is realized demultiplexing, descrambling and the decoding of digital television program by set-top box (or all-in-one).Because the cost of IC-card is lower, therefore, the lesser calorie scheme can satisfy the development strategy of China's Digital Television in the early stage preferably.
But all there is shortcoming separately in three kinds of schemes, can not independently satisfy the demand of Digital Television separation between machine and card.At first, for the kilocalorie scheme, though the performance of pcmcia card and USB card is higher, their cost is higher equally.Yet at the initial stage that Digital Television is promoted, market only needs basic digital television receiving function, does not need the high-performance of pcmcia card and USB card, adopts the kilocalorie scheme obviously to increase the popularization cost, can not satisfy current demand.Secondly, for the lesser calorie scheme, though the IC-card cost is lower, its function is limited, can't realize complicated value-added service.Along with the popularization of Digital Television, the demand of value-added service is bound to constantly increase.Adopt the lesser calorie scheme obviously not meet the demand of Digital Television future development.
Summary of the invention
The present invention promptly is the defective that exists in the above-mentioned prior art, and a kind of expendable machine card separation method that in digital television system, realizes that proposes, this method can realize rising in value expanded function, guarantees that simultaneously cost is lower.
For achieving the above object, the invention provides the realization expendable machine card separation device in a kind of digital television system, comprise main frame, integrated circuit card; Described main frame is set-top box or the all-in-one with receiving digital television program function, comprises the core integrated circuit, and described core integrated circuit is used to realize demodulation, demultiplexing and the decoding of digital television program; Described main frame is connected by the integrated circuit card hardware interface with integrated circuit card; Be provided with condition receiving system in the described integrated circuit card, the deciphering of the basic authorization data of described condition receiving system realization Digital Television and the deciphering of encryption control word are used to control the rating right of user to the optional network specific digit TV programme.
Further, described integrated circuit card is the integrated circuit card that meets ISO/IEC 7816 standards.Further, this device also comprises the USB card; Described USB card is the external expansion card based on usb bus, is provided with the value-added service unit of expansion, is used to handle the required demultiplexing of digital television signal, descrambling, decoding; Described main frame is crossed USB card hardware interface with the USB cartoon and is connected.Further, described integrated circuit card is crossed the interior communication bus of described main frame with the USB cartoon and is connected, and described integrated circuit card carries out authentication and deciphering to value-added service, with the use right of control user to specific value-added service.
The present invention also provide in a kind of digital television system realize expendable machine card separation method, this method can realize basic digital receiving television program with, described basic digital receiving television program is realized by following step:
(1) main frame is by tuner receiving digital television program;
(2) main frame is to the filtercondition of integrated circuit card querying condition receiving system, and integrated circuit card sends filtercondition to main frame;
(3) main frame is handled the data of digital television program according to filtercondition, filters out the condition receiving system data designated, and these data are sent to integrated circuit card;
(4) integrated circuit card is handled the filtered data that main frame sends, and comprises the authentication to user authorization data, and ciphered data is decrypted, and send to main frame;
(5) integrated circuit card judges whether authentication and deciphering be correct, if correct, execution in step (7) then, otherwise, execution in step (6);
(6) integrated circuit card sends error code to main frame, and finishes whole process.
(7) integrated circuit card sends the data that the TV programme descrambling is used to main frame, and main frame carries out descrambling with data to TV programme according to descrambling, and is sent to display device.
Further, be provided with safe storage in the integrated circuit card, the filtercondition described in the step (2) is stored in the interior safe storage of integrated circuit card.
Further, this method can also realize value-added service, and described value-added service realizes by following step:
(11) main frame receives the value-added service data;
(12) main frame is to the filtercondition of USB card inquiry value-added service;
(13) main frame is handled the value-added service data according to filtercondition, filters out the value-added service data designated, and these data are sent to the USB card;
(14) the USB card sends authorization data and enciphered data to integrated circuit card;
(15) integrated circuit card is handled authorization data and enciphered data that the USB card sends, comprises the authentication to user authorization data, and ciphered data is decrypted;
(16) integrated circuit card judges whether authentication is correct with deciphering, if correct, execution in step (18), if incorrect, execution in step (17);
(17) integrated circuit card sends error code to the USB card, and finishes whole process;
(18) integrated circuit card sends the data that usefulness is deciphered in value-added service to the USB card, and the USB card is decrypted value-added service with data according to deciphering, and is sent to other treatment facilities.
Further, be provided with safe storage in the described integrated circuit card, the filtercondition described in the step (2) is stored in the interior safe storage of integrated circuit card.
Further, be provided with safe storage in the described USB card, the filtercondition described in the step (12) is stored in the interior safe storage of USB card.
Further, in the described step (14), the USB card is directly to send authorization data and enciphered data to integrated circuit card.
Further, in the described step (14), the USB card is realized by following method to integrated circuit card transmission authorization data and enciphered data: the USB card sends to main frame and is used to filter the filtercondition that sends authorization data and enciphered data, sends authorization data and enciphered data according to filtercondition to integrated circuit card by main frame again.
Further, in the described step (18), integrated circuit card is the data that directly send value-added service deciphering usefulness to the USB card.
Further, in the described step (18), integrated circuit card is achieved in that to the data that the USB card sends value-added service deciphering usefulness integrated circuit card sends the data of value-added service deciphering usefulness earlier to main frame, and main frame is decrypted processing to value-added service then, and sends to the USB card.
Compared with prior art, the extendible machine-card separation method that the present invention proposes is applicable to digital TV integrated machine, digital TV set-top box, IPTV set-top box and any device with receiving digital television program function, the real expendable machine card of realizing separates, and has following remarkable advantage:
(1) combination of main frame and IC-card can realize basic digital television receiving function, and cost is lower, is fit to the initial stage large-scale promotion;
(2) when the increase in demand of user to value-added service, main frame can directly load the USB card and realize value-added service, satisfies the demand of expanded application;
(3) because the USB card has been peeled off CAS function (being realized by IC-card), the cost of USB card can reduce.Different USB cards can be realized different functions at different user's requests, thereby the demand that further segments market promotes the popularization of value-added service;
(4) owing to only need the mutual data relevant with value-added service between USB card and the main frame, amount of communication data and speed significantly reduce, thereby have reduced communication and computing demand to the USB card, can further reduce the cost of USB card.
Description of drawings
Fig. 1 is according in the specific embodiment of the invention, the expendable machine card separation interface schematic representation of apparatus in digital television system.
Fig. 2 is in the specific embodiment of the invention, realizes the flow chart of basic digital receiving television program in digital television system.
Fig. 3 is in the specific embodiment of the invention, realizes the flow chart of value-added service in digital television system.
Fig. 4 is in the specific embodiment of the invention, the another kind of implementation method flow chart of step 504 among Fig. 3.
Fig. 5 is in the specific embodiment of the invention, the another kind of implementation method flow chart of step 507 among Fig. 3.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further introduced, but not as a limitation of the invention.
With reference to shown in Figure 1, be the expendable machine card separation interface schematic representation of apparatus in the digital television system, whole device is made up of main frame 100, IC-card 200 and USB card 300.Set-top box or the all-in-one of main frame 100 for having receiving digital television program function, its nucleus equipment comprises core integrated circuit (IC) 101, IC-card hardware interface 102, USB card hardware interface 103 and communication bus 104 etc.Wherein core I C101 realizes the functions such as demodulation, demultiplexing and decoding of digital television program; IC-card hardware interface 102 realization main frames 100 are communicated by letter with IC-card 200; USB card hardware interface 103 realization main frames 100 are communicated by letter with USB card 300; Communication bus 104 realization IC-cards 200 are communicated by letter with USB card 300.
IC-card 200 is the integrated circuit card that meets ISO/IEC 7816 standards, loading environment receiving system 201, and the deciphering of the deciphering of the basic authorization data of realization Digital Television and encryption control word is used to control the rating right of user to the optional network specific digit TV programme.USB card 300 is the external expansion card based on usb bus, loads the value-added service 301 of expansion, can and handle functions such as the required demultiplexing of digital television signal, descrambling, decoding not with the IC-card hardware interface.USB card 300 communicates with IC-card 200 by the communication bus 104 that main frame 100 provides, and carries out authentication and deciphering by 200 pairs of value-added services of IC-card, with the use right of control user to specific value-added service.
Fig. 2 is the flow chart that one example is realized basic digital receiving television program in digital television system according to the present invention.
Step 401: main frame is by tuner receiving digital television program;
Step 402: main frame is to the filtercondition of IC-card querying condition receiving system, and this filtercondition is stored in the interior safe storage of IC-card, can write in the hair fastener process, also can dynamically update by network, and IC-card sends filtercondition to main frame;
Step 403: main frame is handled the data of digital television program according to filtercondition, filters out the condition receiving system data designated, and these data are sent to IC-card;
Step 404:IC card is handled the filtered data that main frame sends, and comprising the authentication to user authorization data, and ciphered data is decrypted.In representative processing procedure, authorization data is carried by the EMM packet, is the business cipher key of encrypting (SK), and IC-card is decrypted EMM with the personal key (PDK) that is stored in the card, the SK after obtaining to decipher, and be stored in the IC-card.Enciphered data is carried by the ECM packet, is the scrambling control word (CW) of encrypting, and IC-card is decrypted ECM with SK, obtains the CW of deciphering, and sends to main frame;
Whether step 405:IC card is judged authentication and is deciphered correct;
If step 406:IC card receives wrong authorization data or enciphered data, perhaps make a mistake to the authentication of authorization data with to the deciphering of enciphered data, then send error code, and finish whole process to main frame.
After step 407:IC card success authentication and the deciphering, send the data that the TV programme descrambling is used to main frame.In representative processing procedure, these descrambling data are control word;
Step 408: main frame carries out descrambling with data to TV programme according to descrambling, and is sent to display device, finishes the rating process of basic digital television program.
Fig. 3 is the flow chart that one example is realized value-added service in digital television system according to the present invention.
Step 501: main frame receives the value-added service data;
Step 502: main frame is to the filtercondition of USB card inquiry value-added service, and this filtercondition is stored in the interior safe storage of USB card, can write in the hair fastener process, also can dynamically update by network;
Step 503: main frame is handled the value-added service data according to filtercondition, filters out the value-added service data designated, and these data are sent to the USB card;
Step 504:USB card directly sends authorization data and enciphered data to IC-card, and communicating by letter between USB card and the IC-card realized by the communication bus of main frame;
Referring to Fig. 4, be in the specific embodiment of the invention, the another kind of implementation method of step 504 among Fig. 3, this step can be:
Step 601:USB card sends to main frame and is used to filter the filtercondition that sends authorization data and enciphered data;
Step 602: main frame sends authorization data and enciphered data according to filtercondition to IC-card;
Step 505:IC card is handled authorization data and enciphered data that the USB card sends, comprising the authentication to user authorization data, and ciphered data is decrypted.Whether IC-card is judged authentication and is deciphered correct;
If step 506:IC card receives wrong authorization data or enciphered data, perhaps make a mistake to the authentication of authorization data with to the deciphering of enciphered data, then send error code, and finish whole process to the USB card;
After step 507:IC card success authentication and the deciphering, directly send the data of value-added service deciphering usefulness to the USB card;
Referring to Fig. 5, be in the specific embodiment of the invention, the another kind of implementation method of step 507 among Fig. 3, this step can be:
Step 701:IC sends the data of value-added service deciphering usefulness earlier to main frame;
Step 702: main frame is decrypted processing to value-added service, and sends to the USB card;
Step 508:USB card is decrypted value-added service with data according to deciphering, and be sent to other treatment facilities, for different value-added services, described alignment processing equipment can be computer, game machine and memory device etc., to finish the complete procedure of value-added service.
Claims (12)
1, realize the expendable machine card separation device in a kind of digital television system, it is characterized in that: this device comprises main frame, integrated circuit card;
Described main frame is set-top box or the all-in-one with receiving digital television program function, comprises the core integrated circuit, and described core integrated circuit is used to realize demodulation, demultiplexing and the decoding of digital television program;
Described main frame is connected by the integrated circuit card hardware interface with integrated circuit card;
Be provided with condition receiving system in the described integrated circuit card, the deciphering of the basic authorization data of described condition receiving system realization Digital Television and the deciphering of encryption control word are used to control the rating right of user to the optional network specific digit TV programme.
2, realize the expendable machine card separation device in a kind of digital television system as claimed in claim 1, it is characterized in that: described integrated circuit card is the integrated circuit card that meets ISO/IEC 7816 standards.
3, the expendable machine card separation device of realizing in a kind of digital television system as claimed in claim 1, it is characterized in that: this device also comprises the USB card;
Described USB card is the external expansion card based on usb bus, is provided with the value-added service unit of expansion, is used to handle the required demultiplexing of digital television signal, descrambling, decoding;
Described main frame is crossed USB card hardware interface with the USB cartoon and is connected.
4, realize the expendable machine card separation device in a kind of digital television system as claimed in claim 1, it is characterized in that: described integrated circuit card is crossed the interior communication bus of described main frame with the USB cartoon and is connected, described integrated circuit card carries out authentication and deciphering to value-added service, with the use right of control user to specific value-added service.
5, realize the expendable machine card separation method in a kind of digital television system, this method can realize basic digital receiving television program, it is characterized in that:
Described basic digital receiving television program is realized by following step:
(1) main frame is by tuner receiving digital television program;
(2) main frame is to the filtercondition of integrated circuit card querying condition receiving system, and integrated circuit card sends filtercondition to main frame;
(3) main frame is handled the data of digital television program according to filtercondition, filters out the condition receiving system data designated, and these data are sent to integrated circuit card;
(4) integrated circuit card is handled the filtered data that main frame sends, and comprises the authentication to user authorization data, and ciphered data is decrypted, and send to main frame;
(5) integrated circuit card judges whether authentication and deciphering be correct, if correct, execution in step (7) then, otherwise, execution in step (6);
(6) integrated circuit card sends error code to main frame, and finishes whole process;
(7) integrated circuit card sends the data that the TV programme descrambling is used to main frame, and main frame carries out descrambling with data to TV programme according to descrambling, and is sent to display device.
6, realize the expendable machine card separation method in a kind of digital television system as claimed in claim 5, it is characterized in that: this method can also realize value-added service, and described value-added service realizes by following step:
(11) main frame receives the value-added service data;
(12) main frame is to the filtercondition of USB card inquiry value-added service;
(13) main frame is handled the value-added service data according to filtercondition, filters out the value-added service data designated, and these data are sent to the USB card;
(14) the USB card sends authorization data and enciphered data to integrated circuit card;
(15) integrated circuit card is handled authorization data and enciphered data that the USB card sends, comprises the authentication to user authorization data, and ciphered data is decrypted;
(16) integrated circuit card judges whether authentication is correct with deciphering, if correct, execution in step (18), if incorrect, execution in step (17);
(17) integrated circuit card sends error code to the USB card, and finishes whole process;
(18) integrated circuit card sends the data that usefulness is deciphered in value-added service to the USB card, and the USB card is decrypted value-added service with data according to deciphering, and is sent to other treatment facilities.
7, the expendable machine card separation method in a kind of digital television system described in claim 5 is characterized in that:
Be provided with safe storage in the described integrated circuit card, the filtercondition described in the step (2) is stored in the interior safe storage of integrated circuit card.
8, the expendable machine card separation method in a kind of digital television system described in claim 5 is characterized in that:
Be provided with safe storage in the described USB card, the filtercondition described in the step (12) is stored in the interior safe storage of USB card.
9, the expendable machine card separation method in a kind of digital television system described in claim 5 is characterized in that:
In the described step (14), the USB card is directly to send authorization data and enciphered data to integrated circuit card.
10, the expendable machine card separation method in a kind of digital television system described in claim 5 is characterized in that:
In the described step (14), the USB card is realized by following method to integrated circuit card transmission authorization data and enciphered data: the USB card sends to main frame and is used to filter the filtercondition that sends authorization data and enciphered data, sends authorization data and enciphered data according to filtercondition to integrated circuit card by main frame again.
11, the expendable machine card separation method in a kind of digital television system described in claim 5 is characterized in that:
In the described step (18), integrated circuit card is the data that directly send value-added service deciphering usefulness to the USB card.
12, the expendable machine card separation method in a kind of digital television system described in claim 5 is characterized in that:
In the described step (18), integrated circuit card is achieved in that to the data that the USB card sends value-added service deciphering usefulness integrated circuit card sends the data of value-added service deciphering usefulness earlier to main frame, main frame is decrypted processing to value-added service then, and sends to the USB card.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2005101353872A CN1835552A (en) | 2005-12-31 | 2005-12-31 | Device and method of realizing expendable machine card separation in digital television system |
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| CNA2005101353872A CN1835552A (en) | 2005-12-31 | 2005-12-31 | Device and method of realizing expendable machine card separation in digital television system |
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| CNA2005101353872A Pending CN1835552A (en) | 2005-12-31 | 2005-12-31 | Device and method of realizing expendable machine card separation in digital television system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100508568C (en) * | 2007-07-30 | 2009-07-01 | 清华大学 | Machine-card separated graphic system based on C/S structure |
| WO2010017703A1 (en) * | 2008-08-12 | 2010-02-18 | 北京数码视讯科技股份有限公司 | Set-card separation method in digital tv receiving terminal |
| CN102307317A (en) * | 2011-08-10 | 2012-01-04 | 深圳国微技术有限公司 | System for implementing data value-added service (VAS) by CAM (conditional access module) card |
| CN102340702A (en) * | 2010-07-23 | 2012-02-01 | 航天信息股份有限公司 | IPTV (Internet protocol television) network playing system and rights management and descrambling method based on USB (Universal serial bus) Key |
| CN102780866A (en) * | 2012-08-08 | 2012-11-14 | 卢泳 | Modularized television |
| CN103037255A (en) * | 2011-09-30 | 2013-04-10 | 乐金电子(中国)研究开发中心有限公司 | Automatic adaptive method for conditional access module (CAM) card |
| CN103546785A (en) * | 2013-09-12 | 2014-01-29 | Tcl商用信息科技（惠州）股份有限公司 | Electronic equipment CA function realizing system and method based on USB (universal serial bus) |
| US20150296171A1 (en) * | 2014-04-11 | 2015-10-15 | Harman International Industries, Inc. | Portable media enhancement device |
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2005
- 2005-12-31 CN CNA2005101353872A patent/CN1835552A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100508568C (en) * | 2007-07-30 | 2009-07-01 | 清华大学 | Machine-card separated graphic system based on C/S structure |
| WO2010017703A1 (en) * | 2008-08-12 | 2010-02-18 | 北京数码视讯科技股份有限公司 | Set-card separation method in digital tv receiving terminal |
| CN102340702B (en) * | 2010-07-23 | 2013-07-24 | 航天信息股份有限公司 | IPTV (Internet protocol television) network playing system and rights management and descrambling method based on USB (Universal serial bus) Key |
| CN102340702A (en) * | 2010-07-23 | 2012-02-01 | 航天信息股份有限公司 | IPTV (Internet protocol television) network playing system and rights management and descrambling method based on USB (Universal serial bus) Key |
| CN102307317A (en) * | 2011-08-10 | 2012-01-04 | 深圳国微技术有限公司 | System for implementing data value-added service (VAS) by CAM (conditional access module) card |
| CN103037255A (en) * | 2011-09-30 | 2013-04-10 | 乐金电子(中国)研究开发中心有限公司 | Automatic adaptive method for conditional access module (CAM) card |
| CN103037255B (en) * | 2011-09-30 | 2017-06-30 | 乐金电子(中国)研究开发中心有限公司 | A kind of CAM cards automatic adaptation method |
| CN102780866A (en) * | 2012-08-08 | 2012-11-14 | 卢泳 | Modularized television |
| WO2014023190A1 (en) * | 2012-08-08 | 2014-02-13 | Lu Yong | Modularized television |
| CN103546785A (en) * | 2013-09-12 | 2014-01-29 | Tcl商用信息科技（惠州）股份有限公司 | Electronic equipment CA function realizing system and method based on USB (universal serial bus) |
| CN103546785B (en) * | 2013-09-12 | 2017-12-19 | Tcl商用信息科技（惠州）股份有限公司 | A kind of electronic equipment CA functions based on USB realize system and method |
| US20150296171A1 (en) * | 2014-04-11 | 2015-10-15 | Harman International Industries, Inc. | Portable media enhancement device |
| US9535455B2 (en) * | 2014-04-11 | 2017-01-03 | Harman International Industries, Inc. | Portable media enhancement device |
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