CN103634628A - Digital domestic multimedia gateway with DRM (Data Rights Management) protection - Google Patents
Digital domestic multimedia gateway with DRM (Data Rights Management) protection Download PDFInfo
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Abstract
The invention discloses an implementation scheme for a digital domestic multimedia gateway with DRM (Data Rights Management) protection. Through the scheme, the receiving of broadcasting and digital television signals and the accessing to broadcasting and television bilateral networks can be realized, a front-end CAS (Conditional Access System) is supported, the CA (Conditional Access) descrambling and the DRM encryption protection and authorization management for the received digital television signals can be finished, the gateway is locally encrypted again, the transmission to a terminal covered with a domestic network is output through the IP (Internet Protocol) format of the gateway, and a DRM client end based on hardware (a security chip) or software is embedded in the terminal, so that the connection protection for a plurality of terminals is realized through a DRM module inside the multimedia gateway. Through the scheme, not only can a plurality of interactive service functions be realized, but also the terminal investing cost and the terminal upgrading cost of operators can be effectively lowered, the obstruction of set-top boxes for many kinds of interactive services in the future is eliminated, the security level of content protection is increased, and the benefit of content providers and the operators is well guaranteed. The scheme not only is an effective means of tri-network integration, but also becomes the mainstream model of the future development for broadcasting and television operators.
Description
Technical field
The present invention relates to a kind of realization of digital home multimedia gateway of the DRM of having protection, be under the jurisdiction of digital television techniques, network service, digital copyright protecting field.
Background technology
Along with the high speed development of digital information, digital home becomes the another high-tech product that the information age gives us already.User is the jumping development that has jointly promoted whole digital family system transition to service operator for intelligentized tight demand and traditional radio and TV operator.In addition, cable TV network relies on the wide huge advantage of its frequency spectrum, to become the most important a part of Internet resources of Future Social Development, the interactive application such as digital TV in high resolution, VOD, video telephone, multi-medium data, the Internet are provided for user, the continuous expansion of realization from basic service to value-added service, the vision of gradual perfection " integration of three networks ".
DRM (Digital Rights Management) can be translated as: digital copyright management.Refer to more usufructuary technology that publisher is used for controlling protected object; these technical protections have digitized content (for example: software, music, film) and hardware, process the use restriction of certain example of digital product. this term easily and copyright protection obscure.The technology in the digital media content on electronic equipment that is applied in that copyright protection refers to, the right to use of these digital media content can be controlled and limit to DRM resist technology after using.Digital copyright management (DRM) is along with wide-scale distribution on the internet of electronic audio frequency video frequency program and a kind of new technology growing up.The copyright that its objective is protection Digital Media, prevents the bootlegging of Digital Media technically, or makes to a certain extent to copy very difficult, and end user could use Digital Media after must be authorized.
As a technical foundation of the integration of three networks, Conditional Access (CA) guarantees to only have authorized user or family just to have the right of using a certain business, and all the other uncommitted users can not use this business.Yet, because there is different definition in current different CA producer or adopts different standards the internal mechanism of oneself, cause broadcasting and TV terminal area to be cut apart, hindered the development of horizontal market; And current CAS does not support the IP terminals such as PC, panel computer, smart mobile phone yet, does not support home network distribution and management and two-way mutual business; The most important thing is, its fail safe is subject to extensive query, is faced with three large natural enemies: network is shared, soft cracking and control word (CW) staticize.
Home gateway is as an indispensable important component part of whole digital home, it is playing the part of the pivotal player of forming a connecting link: to being externally connected with line TV network, wireless broadband network etc., internally connect and control various intelligent terminals and household electrical appliance in home network, realizing One-to-All Broadcast and two-way services to the seamless access of home network.By home gateway, user can pass through the Internet Long-distance Control and managing family smart machine whenever and wherever possible.Therefore can find out, home gateway is the necessary equipment that connects multi-screen, is the effective way that broadcasting and TV complete transition.Its cardinal principle is that transferring digital television signal to IP Stream data flow transmits, and in receiving part, can adopt the player that has reception IP bag and obtain TS code stream to carry out broadcast program.
In addition, as a kind of, numeral or analog signal (deriving from wire cable, satellite antenna, broadband network and terrestrial broadcasting etc.) can be transformed to the basic equipment of TV signal, conventional set-top box but seldom possesses the ability of the interactive application such as ultra high-definition Digital Television (4K), 3D movie theatre, the Internet, video request program (VOD), video telephone, ecommerce (B2C), thereby can not truly realize the conversion from traditional one way traffic to New Times two-way services.Therefore, current Set Top Box pattern is restricting transition and the development of CHINA RFTCOM Co Ltd.Meanwhile, OTT business is also in the long term growth of constantly impacting traditional radio and TV operator's basic service and value-added service.
Therefore, the test CHINA RFTCOM Co Ltd that faces final and decisive juncture must be initiatively ready for the challenge, and utilizes the advantage of CHINA RFTCOM Co Ltd to carry out integration of three networks business, adapts to the development in epoch in technology and operation mode.In view of traditional C A, Set Top Box lag significantly behind the epoch, its fail safe, function and cost can not meet the demand of integration of three networks business, CHINA RFTCOM Co Ltd should adopt in conjunction with DRM technology and the new standards system of new digital family multi-media gateway and China, support multi-screen business, integration of three networks business and family network service, ensure content, network and user security under multi-service!
Summary of the invention
Have in view of that, the present invention proposes a kind of implementation of digital home multimedia gateway of the DRM of having protection.This scheme can realize the reception to broadcast digital television signals, and the access to radio and television bilateral network.And this multimedia gateway is supported front end CAS (condition receiving system); can complete the CA descrambling of received digital television signal and DRM encipherment protection and empowerment management; at gateway local re-encrypted again; the terminal transmission that IP formatted output by gateway covers to home network; the built-in drm agent based on hardware (safety chip) or software in this terminal, protects the connection of multiple terminals thereby the DRM module by multimedia gateway inside realizes.
The present invention is owing to having taked above technical scheme, it has the following advantages: can effectively use the hardware resource of intelligent terminal to realize the basic service of Digital Television, can realize unidirectional and Bidirectional networking protection (CA+DRM), the Internet OTT content protecting and user management, home network and equipment control and protection (DRM), local storage protection-Push VOD and DVR/PVR, (Android under different system, iOS, MS, Linux etc.) intelligent terminal safety management and protection, equipment interface connects protection (Ethernet, USB, HDMI etc.), family's slave management, the protection of cloud application, online and off-line watermark, utilize USB key the various functions such as to protect to used equipment and intelligence, not only effectively reduce operator's terminal input cost and terminal staging cost, and the obstruction of elimination Set Top Box to multiple interactive service in future, improved the safe class of content protecting, the interests of content supplier and operator have been ensured well.This scheme is the effective means of the integration of three networks, more will become the prevailing model of radio and TV operator's future development.
Below in conjunction with drawings and Examples, the present invention is further described.
Accompanying drawing explanation
Fig. 1 is a kind of digital home multimedia gateway of the DRM of having protection
Fig. 2 is the digital home gateway of a kind of CA of employing and DRM
Fig. 3 is the digital home gateway of a kind of DRM of employing and smart card
Fig. 4 is a kind of DCAS+ChinaDRM home gateway (Set Top Box) system
Fig. 5 is the system of DCAS+ gateway
Fig. 6 is the system of ChinaDRM+ gateway
Embodiment
In the embodiment shown in fig. 1, this system by broadcast digital TV tuning demodulator module, DRM independence safety chip, possess digital television signal and process and realize the SOC its main operational unit of network routing function, ethernet controller module, WiFi module, radio and television bi-directional network interface (comprising built-in CableMODEM module, EOC module or EPCN module etc.), Ethernet WAN mouth and LAN mouth, USB interface, SD card interface etc. and form.
The concrete constitute and function of each module is described respectively below.
Tuning demodulator module is 1.: the channel in broadcast digital TV transmission network is carried out to tuning and channel demodulation, and output MPEG-2TS stream, and by TS, flow SPI interface and be 2. connected with DRM independence safety chip.1. tuning demodulator module realizes and being connected of SOC by I2C bus, completes corresponding control.
DRM independence safety chip is 2.: the digital TV broadcast signal 1. receiving through tuning demodulator module completes the work of CA descrambling at DRM independence safety chip in 2.; and then 2. the clear stream of descrambling is carried out to the processing of DRM superencipher at DRM independence safety chip, then the TS of the secondary DRM protection TS stream spi bus of flowing through is sent in SOC.2. DRM independence safety chip is realized and being connected of SOC by I2C bus, completes corresponding control.
CableMODEM (EOC) module is 4.: by this module, connect the radio frequency port of television network broadcast, connect the bilateral network of television network broadcast, realize the carrying to the two-way services of television network broadcast.
Ethernet WAN mouth 5. with LAN mouth 6.: the television network broadcast signal that gateway receives is encrypted and the processing such as IP encapsulation through inner descrambling, DRM, then passes through LAN mouth and 6. deliver in family's multi-terminal equipment.5. Ethernet WAN mouth mainly completes the access to family broadband.
WiFi module is 7.: 7. WiFi module is used for realizing the network focus AP function of gateway of the present invention, realizes the connection to family's multi-terminal equipment.
SOC chip module is 3.: 3. SOC chip module is the core processing unit of gateway of the present invention, 3. SOC chip module comprises SOC chip and Flash and RAM data and software storage chip, complete to receive tuning demodulator module 1., DRM independence safety chip 2., CableMODEM (EOC) module 4., the WiFi module control function of unit such as 7., and the operation that completes drive software, application software, realize network route, TS stream IP encapsulation, TS flows through the critical functions such as filter, VLAN control, equipment control, user management, DRM computing.
SD card interface 9. with USB mouth 8.: 8. 9. gateway be connected the multiple memory devices such as SD card, TF card, USB flash disk, USB portable hard drive through SD card interface with USB mouth, to support the functions such as digital TV data transmission service, network data are shared, P2P network-caching.
This system just can realize the reception to broadcast digital television signals, and the access to radio and television bilateral network.Simultaneously can connect the broadband network of registering one's residence by WAN mouth realizes and being connected of the Internet.Gateway in this system can complete the CA descrambling of received digital television signal and secondary DRM encipherment protection.And the connection to family multiple terminals by the LAN mouth on gateway and WiFi Interface realization, by the DRM module realization of intra-gateway, the connection of multiple terminals is protected.And the built-in SD card interface of family digital TV gateway and USB interface, can support the connection to multiple memory device.
In embodiment illustrated in fig. 2; tuner is converted into TS stream by RF signal; TS stream is being formed to new TS stream TS ' by CA system; and then again obtain new TS stream TS by DRM system "; finally by IP transducer by TS " be converted to the player that IP bag offers intelligent terminal in digital home network, so just realized by multimedia gateway and having completed carrying out the function of DRM encipherment protection with the data of terminal transmission.
In the embodiment shown in fig. 3, similar with the embodiment in Fig. 2, just the separated conventional smart card that adopts of CA is realized.
In the embodiment shown in fig. 4, in this embodiment, employing be DCAS and ChinaDRM system, wherein first live class program is converted into TS by the multiplexing interference in DCAS and flows, and injects digital TV network by live broadcast system.But not live class program is first converted to TS by the pre-encryption subsystem of ChinaDRM, flow, and then inject digital TV network by bi-directional service management systems such as play-on-demand program, program push.Whole front end process is completed by systems such as authentication center and ChinaDRM key management and Certificate Authorities, and accepts DRM license of right and complete alternately by IP bilateral network and terminal household gateway (inserting UDRM safety chip).
In embodiment shown in Fig. 5, the system example that adopts DCAS and gateway to realize.Wherein, CHINA RFTCOM Co Ltd can take DCAS system to carry out safety management, and television services is arrived to gateway by cable TV network, Internet service can be completed alternately by wide area network (WAN) by Service control interface and user management interface and gateway by Broadcasting Cable Network, is that software client is embedded in multimedia player in the terminal of home network.So just can be directly by gateway by WiFi come with multiple intelligent terminal (PC, Pad, phone etc.) complete live such as DTV, review, the function such as program request, OTT business, social TV.
In embodiment shown in Fig. 6; also can adopt the form of ChinaDRM and gateway to realize; from different in Fig. 5 embodiment be; the built-in client based on DRM in the terminal of home network; and software client can be embedded in multimedia player; so just, can complete after digital television signal is transformed into IP packet and by player, be completed the functions such as broadcasting, search, and can complete the function that data to transmitting with terminal are carried out DRM encipherment protection by multimedia gateway.
Claims (14)
1. a digital home multimedia gateway system with DRM protection, is characterized in that:
There is digital television signal to the function of IP format conversion;
There is DRM content and equipment protection pre-managing function, multimedia gateway is supported front end CAS (condition receiving system) or deciphering and the empowerment management of DRM system to the encrypted content of transmission, at gateway local re-encrypted again, the terminal transmission that the IP formatted output by gateway covers to home network;
The built-in drm agent based on hardware (safety chip) or software in the terminal of home network, software client can be embedded in multimedia player.
2. IP formatted output according to claim 1, the method comprises Ethernet interface, WiFi interface, power line carrier or EOC interface etc.
3. terminal according to claim 1, the method includes but not limited to television set, Set Top Box, PC, panel computer, mobile phone, network player, multi-media player, Web TV rod, intelligent TV set etc.
4. cas system according to claim 1, the method comprises to be taked to download conditional access system DCAS.
5. multimedia gateway according to claim 1, this is characterised in that supports route, VLAN, HTTP, udp protocol, and the output such as Ethernet network interface, WiFi interface, power line carrier or EOC interface, and support the home networks such as UPnP, DLNA, and complete the function that digital television signal is transformed into IP packet.And complete by multimedia gateway the function that data to transmitting with terminal are carried out DRM encipherment protection.
6. multimedia gateway according to claim 1, the method comprises the Set Top Box that contains this function, it is characterized in that connecting the multiple memory devices such as SD card, TF card, USB flash disk, USB portable hard drive, to support the functions such as digital TV data transmission service, network data are shared, P2P network-caching.
7. digital television signal according to claim 5 is transformed into the method for IP packet, and this is characterised in that and adopts DRM to realize the protection to TS stream.
8. according to the player system described in claim 1, this has been characterised in that, and DRM authorizes, the function of TS stream deciphering.
9. multimedia player according to claim 1, this has been characterised in that and has received IP packet, has obtained the function of TS code stream.
10. according to the player system described in claim 1, this has been characterised in that the playing function of digital television code stream, and possesses the functions such as program searching, electronic program list (EPG), program Play Control.
11. according to the DRM protection described in claim 1, the mandate of the method gateway support and player terminal mandate.
12. according to the digital television signal described in claim 1, and this feature includes, but are not limited to the broadcast digital television signals of all cable TVs, terrestrial television and the satellite television standards such as DVB-C, DVB-T, Chinese ground standard DTMB, DVB-S, DVB-S2.
13. according to the cable TV signal described in claim 12, this feature comprises in the accessible radio and television bilateral network of family digital TV gateway, wired bilateral network that can form by built-in CableMODEM module access IPQAM and CMTS, also can be by the EPON+EOC bilateral network of built-in EOC receiver module access cable TV, also can be linked in the bilateral network of EPON+LAN of broadcasting and TV cable TV by WAN mouth, also can be linked into EPON+FTTH broadcasting and TV Fiber to the home network by register one's residence ONU and optical receiver of WAN mouth.By the connection to broadcasting and TV bilateral network, access wired broadband network, also can connect other broadband MODEM that registers one's residence by WAN and realize and being connected of the Internet.And can receive the broadcast digital television signals of a plurality of frequencies.
14. according to the safety chip described in claim 1, and this feature comprises independent safety chip, and it is by CA module, DRM proxy module, content descrambling module and be connected protection module etc. and be all integrated on an independent safety chip.
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| CN201310500821.7A CN103634628A (en) | 2013-10-23 | 2013-10-23 | Digital domestic multimedia gateway with DRM (Data Rights Management) protection |
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| CN201310500821.7A CN103634628A (en) | 2013-10-23 | 2013-10-23 | Digital domestic multimedia gateway with DRM (Data Rights Management) protection |
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| CN105163138A (en) * | 2015-08-21 | 2015-12-16 | 深圳市九洲电器有限公司 | CA (Conditional Access) authentication method and CA authentication system of video gateway |
| CN105430510A (en) * | 2015-12-02 | 2016-03-23 | 北京四达时代软件技术股份有限公司 | Video on demand method, gateway, smart terminal and video on demand system |
| CN105634808A (en) * | 2015-12-30 | 2016-06-01 | 上海下一代广播电视网应用实验室有限公司 | Realization method of authentication management system of wired intelligent device |
| CN105704526A (en) * | 2015-12-30 | 2016-06-22 | 北方联合广播电视网络股份有限公司 | DRM implementation method and system for digital television, television gateway and terminal |
| WO2017092687A1 (en) * | 2015-12-03 | 2017-06-08 | 国家新闻出版广电总局广播科学研究院 | Implementation method for media gateway/terminal supporting digital rights management (drm), and device therefor |
| CN108197436A (en) * | 2017-12-14 | 2018-06-22 | 安徽新华传媒股份有限公司 | A kind of digital copyright management platform towards mobile Internet |
| CN108282397A (en) * | 2017-12-26 | 2018-07-13 | 深圳数字太和科技有限公司 | A kind of hybrid network gateway for supporting plurality of access modes |
| CN115442186A (en) * | 2022-08-12 | 2022-12-06 | 大连天途有线电视网络股份有限公司 | Fusion gateway based on cable television network |
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| CN105163138A (en) * | 2015-08-21 | 2015-12-16 | 深圳市九洲电器有限公司 | CA (Conditional Access) authentication method and CA authentication system of video gateway |
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| CN105430510A (en) * | 2015-12-02 | 2016-03-23 | 北京四达时代软件技术股份有限公司 | Video on demand method, gateway, smart terminal and video on demand system |
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| WO2017092687A1 (en) * | 2015-12-03 | 2017-06-08 | 国家新闻出版广电总局广播科学研究院 | Implementation method for media gateway/terminal supporting digital rights management (drm), and device therefor |
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| CN105634808A (en) * | 2015-12-30 | 2016-06-01 | 上海下一代广播电视网应用实验室有限公司 | Realization method of authentication management system of wired intelligent device |
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| CN108197436A (en) * | 2017-12-14 | 2018-06-22 | 安徽新华传媒股份有限公司 | A kind of digital copyright management platform towards mobile Internet |
| CN108282397A (en) * | 2017-12-26 | 2018-07-13 | 深圳数字太和科技有限公司 | A kind of hybrid network gateway for supporting plurality of access modes |
| CN115442186A (en) * | 2022-08-12 | 2022-12-06 | 大连天途有线电视网络股份有限公司 | Fusion gateway based on cable television network |
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