CN105611398B - A kind of method and apparatus using Conditional Access Module network data - Google Patents
A kind of method and apparatus using Conditional Access Module network data Download PDFInfo
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- CN105611398B CN105611398B CN201511028020.0A CN201511028020A CN105611398B CN 105611398 B CN105611398 B CN 105611398B CN 201511028020 A CN201511028020 A CN 201511028020A CN 105611398 B CN105611398 B CN 105611398B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Computer And Data Communications (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention is suitable for digital TV technology.Provide a kind of method and apparatus using Conditional Access Module network data.The method using Conditional Access Module network data includes: that the Microsoft Loopback Adapter that connection is established with host is configured in Conditional Access Module；Address and the port information of upstream data and target device are obtained by Microsoft Loopback Adapter；Upstream data is sent to target device according to the address of target device and port information according to the communications protocol with Host Negotiation；Microsoft Loopback Adapter is written after the downlink data that host is got is encapsulated with the format of ether packet, so that networking client obtains downlink data from Microsoft Loopback Adapter.The invention enables Conditional Access Modules can accurately parse any request of data from client, valid data are sent to network operator, Conditional Access Module is allowed to pass through network insertion to watch IP network program, allow user that can watch different programs in any time period, gives user a kind of completely new experience.
Description
Technical field
The invention belongs to digital TV technologies more particularly to a kind of using Conditional Access Module network data
Method and apparatus.
Background technique
The rise of Digital Television period is gradually instead of simulated television, but DTV is for simulated television
The change of signal form does not touch the circulation way of media content.With the rapid development of IP network, more Internet resources
Become the supplement of digital television program well.For conventional conditions receiving module, mainly integrated CA module can only
Single treatment DVB program, is not able to satisfy the demand of average family gradually.As Incumbent is transformed into more comprehensive IP
The network architecture supports network television and other equipment, IP network product to facilitate existing operator deployment one more extensively
Client device and be dedicated to the business model of the wider array of new DTV of range of opening so that a kind of be based on condition reception
Module (Conditional Access Module, CAM) Lai Shixian IPTV comes into being.
Traditional technology Conditional Access Module can only descramble the DVB program from front end, cannot be into for IPTV internet program
The corresponding descrambling work of row.At the integrated library CA with network function, once integrated client needs to carry out Internet resources
When relevant operation, can only single utilization Host LSC resource and server simple data request interaction, can not handle from IP
The internet program of network operator.
Since CAM can only handle the TV programme from traditional DVB operator, section entitlement program is needed to pass through net
Network carries out authorization identifying processing.Traditional method does not have NIC device module (to turn for the data to be transmitted user due to CAM
It is changed to the format that other equipment can identify on network, is transmitted by network medium), all-network functional interface requires CAM
(some column network interfaces of such as connect, send/recv, sendto/recvfrom) are realized by redefining encapsulation.
The networking client for integrating non-open source, the call relation of all-network interface belongs to nontransparent shape for CAM
State, encapsulation function interface not can solve increasingly complicated network environment demand.When networking client is in inquiry network device state
When, it can frequently malfunction because CAM does not have network equipment file, so that client cannot be accurately obtained network equipment shape
State, the normal workflow for affecting networking client of high degree.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus using CAM network data, it is intended to solve the prior art
It can only be realized by redefining encapsulation when middle playing network television program and realize difficult problem caused by program plays.
The embodiments of the present invention are implemented as follows, a method of using CAM network data, this method comprises:
The Microsoft Loopback Adapter that connection is established with host is configured in CAM；
Address and the port information of upstream data and target device are obtained by Microsoft Loopback Adapter；
Upstream data is sent to according to the address of target device and port information according to the communications protocol with Host Negotiation
Target device；
Microsoft Loopback Adapter is written after the downlink data that host is got is encapsulated with the format of ether packet, for networking client
Downlink data is obtained from Microsoft Loopback Adapter.
The embodiment of the present invention also provides a kind of device using CAM network data, which includes:
Microsoft Loopback Adapter configuration module, for configuring the Microsoft Loopback Adapter for establishing connection with host in CAM；
Upstream data obtains module, for obtaining the address and port of upstream data and target device by Microsoft Loopback Adapter
Information；
Upstream data sending module, for according to the communications protocol with Host Negotiation by upstream data according to target device
Address and port information are sent to target device；
Downlink data writing module, the downlink data for getting host are empty to be written after the format encapsulation of ether packet
Quasi- network interface card, so that networking client obtains downlink data from Microsoft Loopback Adapter.
The present invention enables CAM accurately to parse any data from client by the Integrated Virtual network interface card in CAM
Request, such as IP network data packet, Ethernet data bag, TCP/UDP data packet and UDP network packet, CAM pass through parsing
Valid data can be sent to network operator by the physical link of host or digital television interaction by respective protocol data,
It allows CAM to pass through network insertion to watch IP network program, allows user that can watch different programs in any time period, it is a kind of to user
Completely new experience.
Detailed description of the invention
Fig. 1 is the flow chart for descrambling the method for TV programme in the prior art；
Fig. 2 is the flow chart for the method using CAM network data that the embodiment of the present invention one provides；
Fig. 3 is the communication flow diagram of the client that an example of the invention provides and server；
Fig. 4 is the flow chart of the method provided by Embodiment 2 of the present invention using CAM network data；
Fig. 5 is the flow chart for the method using CAM network data that the embodiment of the present invention three provides；
Fig. 6 is the structural schematic diagram for the device using CAM network data that the embodiment of the present invention four provides；
Fig. 7 is the structural schematic diagram for the device using CAM network data that the embodiment of the present invention five provides.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention directly can not obtain corresponding TV programme from network operator for current CAM, be merely able to single
Descramble the digital television program from DVB, bring user can not arbitrary viewing network screen program the problem of, accordingly
Using the Integrated Virtual network interface card in CAM, CAM is allowed to pass through network insertion host or digital television interaction to watch IP network program,
Allow user that can watch different programs in any time period.
Fig. 1 is now provided in order to distinguish the method for receiving network video data, Fig. 1 is to descramble TV programme in the prior art
The flow chart of method, as shown in Figure 1, mainly including the following steps:
CAM handles the request of data from Client client, gets number of request by ICP/IP protocol stack Packet analyzing
According to interacting word TV IDTV LSC session resource by host Host/ will request authorization Key information to be sent to authorization
Server, Key Server can be authorized based on the unique ID attribute of CAM, for example Chip ID unique identification is believed when CAM factory
Breath etc..The Key information that CAM has got Key Server return identifies CAM authorized success.It only authorizes successfully,
CAM could go to request corresponding program stream information according to normal flow；
Host Host is received from authorization server Server response data, and CAM then passes through dynamic scan LSC
Session resource gets response data according to mapping management matching process；
After CAM completes authorization, start to request Stream information to Server, again by LSC resource by solicited message
It is sent to Server；
Stream payload is sent to Host by Server, and CAM passes through LSC session resource acquisition to stream information；
CAM continues according to program stream information to authorization server request descrambling Key；
Host gets descrambling Key and informs CAM by LSC session；
After CAM gets descrambling Key, Stream is descrambled, and clear stream is conveyed to Host or IDTV by TS interface and is played.
Embodiment one
Fig. 1 is the flow chart provided by Embodiment 2 of the present invention using CAM network data, is had below with reference to Fig. 1
Body describes the method according to an embodiment of the invention using CAM network data, as shown in Figure 1, this method includes
Following steps:
S201, the Microsoft Loopback Adapter that connection is established with host is configured in CAM.
Wherein, Microsoft Loopback Adapter and host establish an implementation of connection for example:
(1) CAM is by Adapter module dynmaic establishing virtual network card equipment, and routing iinformation is arranged, it is ensured that comes from
Client end data homomergic flow enters virtual network card equipment；
(2) Microsoft Loopback Adapter driving receives the SYN handshake from the end Client, and Adapter module calls LSC resource
To obtain the linking status between Host physical link and Server, and result is passed back to Adapter module, Adapter mould
Block sends SYN+ACK message and gives the end Client, acknowledges receipt of the message from the end Client, and Adapter is responded at the end Client
ACK, such Client and Adapter complete the foundation of link by these three message segments.This process is known as three-way handshake.
S202, address and the port information that upstream data and target device are obtained by Microsoft Loopback Adapter.
Wherein, an implementation of the step is for example:
Client sends data Payload to Server, handles by Microsoft Loopback Adapter, Adapter module passes through TCP/IP
Protocol stack is analyzed and acquired by the ether packet of the Ack+Payload from the end Client.
S203, upstream data is sent out according to the address of target device and port information according to the communications protocol with Host Negotiation
Give target device；
Wherein, an implementation of the step is for example:
Payload data are sent to host by LSC session by Adapter module, then again loopback ACK packet to void
Quasi- trawl performance.Client completes to send.
S204, Microsoft Loopback Adapter is written after encapsulating the downlink data that host is got with the format of ether packet, for network
Client obtains downlink data from Microsoft Loopback Adapter.
Wherein, an implementation of the step is for example:
(1) Adapter scans whether LSC session has the data for receiving and being transmitted to host from Server, receives it
Data packing is packaged into ether packet again afterwards calls downlink data to give Microsoft Loopback Adapter by system.
(2) Microsoft Loopback Adapter has data receiver to arrive, Client by calling socket interface to downlink data,
Adapter issues Ack packet by ICP/IP protocol stack Packet analyzing Microsoft Loopback Adapter and is properly received to expression data.
Further, above-mentioned target device includes network video server, and corresponding downlink data includes video data.
Wherein, it can integrate multiple client on a CAM, such as: the client of a request program content, it is multiple
Client is assisted, auxiliary client refers to the client for promoting image quality.
CAM includes User space and kernel mode two parts, CAM work User space be mainly responsible for ICP/IP protocol stack data
Packet dismantling and encapsulation write data into visional network driver by Syscall system calling.CAM passes through LSC (LSC agreement
It is a kind of standard communication protocol between CAM and Host/IRD/STB, LSC interface can play between Client and Server
Socket communication function served as bridge) CI interface, utilize Host LSC resource realize and Server between uplink and downlink Data Data hand over
Mutually.CAM calls accurate protocol packet data of the acquisition from the end Client by system, and CAM is obtained by analysis protocol stack count off evidence
The request of data at the end Client is got, and Server is sent to by LSC session, CAM is swept by LSC Session dynamic
It retouches and Host is got into Server response data, called in write-in visional network driver by syscall system, Client
End then gets the data information from the end Server by Socket interface calling.Microsoft Loopback Adapter drives work in kernel state
In, CAM can only be obtained the network data from virtual network card equipment by system method of calling or pass through application layer data
System method of calling is written in virtual network card equipment.
According to the present embodiment example for example, above-mentioned downlink data further includes the response that target device is sent to host
Data, optionally, this method further include:
Parse the address of the load data and target device in the response data of the heterogeneous networks client from host
And port information；
According to the mapping table of preset client and the communication protocol of target device, by parsing from client
Load data is Resealed according to the communication protocol of corresponding target device.
Since the communication between client Client and server Server is that measured socket Principle of Communication is real
Existing.Different Client source ports be it is different, it is source that Server can distinguish request data according to different source ports
In which Client.Data will not generate any interference.As long as ensuring source address and source port information, destination address and
Destination port information.Therefore the present invention is by screening the number between heterogeneous networks client and heterogeneous networks operator
According to channel, i.e. ClientA and ServerA, the data interaction between ClientB and ServerB is requested, and utilizes software check method
The uplink and downlink data from the end Client and the end Server can accurately be handled, it is ensured that data are not interfere with each other, and can establish safety
Data path.Perfect expansion of the CAM in the field IPTV of high degree.
The present embodiment realizes processing of the CAM to network data using software technology means, does not need to integrate on hardware
NIC module realizes that, by the Integrated Virtual network interface card in CAM card, can effectively make up CAM card does not have network adapter NIC
The functional defect of module allows CAM by watching IP with network access equipment (such as: host Host, digital television interaction IDTV)
Internet program allows user that can watch different programs in any time period.
Embodiment two
Fig. 4 is the flow chart of the method provided by Embodiment 2 of the present invention using CAM network data, as shown in figure 4,
Method provided in this embodiment using CAM network data is in the base including above-mentioned steps S201, S202, S203 and S204
It is further comprising the steps of on plinth:
S401, the received instruction for closing network connection of host is obtained；
The communication link that S402, closing and target device are established；
S403, the communication link of closing is sent to Microsoft Loopback Adapter for Microsoft Loopback Adapter release.
Fig. 3 is the communication flow diagram of the client that an example of the invention provides and server, according to the present embodiment
One realization scene is as shown in Figure 3, wherein concrete implementation mode for example:
(1) the current socket of Client Close, Adapter module can be resolved to Microsoft Loopback Adapter and issue Fin, Ack packet.
(2) Adapter is by the current LSC session of Free, and Close LSC session, host can be completed further
Link closing processing between Server.Adapter completes uplink to Microsoft Loopback Adapter by protocol encapsulation Ack packet to show simultaneously
Link is closed and is disposed.
The implementation method that Client client actively closes network connection is present embodiments provided, so that when user no longer needs
When being connected to the network, the instruction of network connection is closed by sending to local host or digital television interaction, enhances user
Experience.
Embodiment three
Fig. 5 is the flow chart for the method using CAM network data that the embodiment of the present invention three provides, as shown in figure 5,
Method provided in this embodiment using CAM network data is in the base including above-mentioned steps S201, S202, S203 and S204
It is specific further comprising the steps of on plinth:
S501, it inquires host and when target device disconnects, closes the downlink communicated with target device.
Fig. 3 is the communication flow diagram of the client that an example of the invention provides and server, according to the present embodiment
One realization scene is as shown in Figure 3, wherein concrete implementation mode for example:
(1) when Adapter inquires the already off connection between server of host, start at downlink closing
Reason；
(2) Adapter module sends Fin by protocol encapsulation, and Ack packet is receiving Fin to Microsoft Loopback Adapter, Microsoft Loopback Adapter,
Ack can be sent to Adapter to show confirmation break link after Ack.
The present embodiment provides the implementation methods that Server server end actively closes network connection, so that detecting server
When end is turned off network connection, the downlink communicated with server is closed, to avoid local active dial-up connection, so that
Technical solution provided by the invention is more complete, enhances the scalability of this programme.
Example IV
Fig. 6 is the structural schematic diagram for the device using CAM network data that the embodiment of the present invention four provides, and is tied below
Fig. 6 is closed to specifically describe the device according to an embodiment of the invention using CAM network data, as shown in fig. 6, should
Include: using the device 100 of CAM network data
Microsoft Loopback Adapter configuration module 10, for configuring the Microsoft Loopback Adapter for establishing connection with host in CAM；
Upstream data obtains module 20, for obtaining the address and end of upstream data and target device by Microsoft Loopback Adapter
Message breath；
Upstream data sending module 30, for according to the communications protocol with Host Negotiation by upstream data according to target device
Address and port information be sent to target device；
Downlink data writing module 40, the downlink data for getting host after the format encapsulation of ether packet to be written
Microsoft Loopback Adapter, so that networking client obtains downlink data from Microsoft Loopback Adapter.
Preferably, the device 100 for utilizing CAM network data further include:
Instruction acquisition module, for obtaining the received instruction for closing network connection of host；
Communication link closedown module, for closing the communication link established with target device；
Communication link sending module is discharged for the communication link of closing to be sent to Microsoft Loopback Adapter for Microsoft Loopback Adapter.
Downlink closedown module, for inquiring host and when target device disconnects, close and target device into
The downlink of row communication.
Device provided in this embodiment using CAM network data handles network number using CAM by using above-mentioned
According to method, can effectively make up the functional defect of the no network adapter NIC module of CAM card, allow CAM by and network connect
Enter equipment to watch IP network program, allows user that can watch different programs in any time period.
Embodiment five
Fig. 7 is the structural schematic diagram for the device using CAM network data that the embodiment of the present invention five provides, such as Fig. 7
Shown in utilize the device of CAM network data, which is including that above-mentioned Microsoft Loopback Adapter configuration module 10, upstream data obtain
In the case where modulus block 20, upstream data sending module 30 and downlink data writing module 40, specifically further include:
Resolution unit 21, load data in response data for parsing the heterogeneous networks client from host and
The address of target device and port information；
Encapsulation unit 31 will be solved for the mapping table according to preset client and the communication protocol of target device
The load data from client of analysis is Resealed according to the communication protocol of corresponding target device.
The present invention enables CAM accurately to parse any data from client by the Integrated Virtual network interface card in CAM
Request, such as IP network data packet, Ethernet data bag, TCP/UDP data packet and UDP network packet, CAM pass through parsing
Valid data can be sent to network operator by the physical link of host or digital television interaction by respective protocol data,
It allows CAM to pass through network insertion to watch IP network program, allows user that can watch different programs in any time period, it is a kind of to user
Completely new experience.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a television terminal equipment executes each reality of the present invention
Apply method described in example.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of method using Conditional Access Module network data, which is characterized in that the described method includes:
The Microsoft Loopback Adapter that connection is established with host is configured in Conditional Access Module；
Address and the port information of upstream data and target device are obtained by the Microsoft Loopback Adapter；
The upstream data is sent out according to the address of the target device and port information according to the communications protocol with Host Negotiation
Give the target device；
The Microsoft Loopback Adapter is written after the downlink data that host is got is encapsulated with the format of ether packet, for networking client
The downlink data is obtained from the Microsoft Loopback Adapter.
2. utilizing the method for Conditional Access Module network data as described in claim 1, which is characterized in that the method
Further include:
Obtain the received instruction for closing network connection of host；
Close the communication link established with the target device；
The communication link of closing is sent to the Microsoft Loopback Adapter to discharge for the Microsoft Loopback Adapter.
3. utilizing the method for Conditional Access Module network data as described in claim 1, which is characterized in that the method
Further include:
It inquires the host and when the target device disconnects, closes the downlink chain communicated with the target device
Road.
4. utilizing the method for Conditional Access Module network data as described in claim 1, which is characterized in that the downlink
Data include the response data that target device is sent to host, the method also includes:
Parse the address of the load data and target device in the response data of the heterogeneous networks client from the host
And port information；
According to the mapping table of the communication protocol of preset networking client and target device, parsing is come from into network client
The load data at end is Resealed according to the communication protocol of corresponding target device.
5. utilizing the method for Conditional Access Module network data as described in claim 1, which is characterized in that pass through adaptation
Device Adapter parses the upstream data, the encapsulation upstream data and the downlink data is packaged into ether packet.
6. such as the method described in any one of claim 1 to 5 using Conditional Access Module network data, feature exists
In the target device includes network video server, and corresponding downlink data includes video data.
7. a kind of device using Conditional Access Module network data, which is characterized in that described device includes:
Microsoft Loopback Adapter configuration module, for configuring the Microsoft Loopback Adapter for establishing connection with host in Conditional Access Module；
Upstream data obtains module, for obtaining the address and port of upstream data and target device by the Microsoft Loopback Adapter
Information；
Upstream data sending module, for setting the upstream data according to the target according to the communications protocol with Host Negotiation
Standby address and port information is sent to the target device；
Downlink data writing module, the downlink data for getting host is to be written the void after the format encapsulation of ether packet
Quasi- network interface card, so that networking client obtains the downlink data from the Microsoft Loopback Adapter.
8. device as claimed in claim 7, which is characterized in that described device further include:
Instruction acquisition module, for obtaining the received instruction for closing network connection of host；
Communication link closedown module, for closing the communication link established with the target device；
Communication link sending module is released for the communication link of closing to be sent to the Microsoft Loopback Adapter for the Microsoft Loopback Adapter
It puts.
9. device as claimed in claim 7, which is characterized in that described device further include:
Downlink closedown module when disconnecting for inquiring the host and the target device, is closed and the mesh
The downlink that marking device is communicated.
10. such as the described in any item devices of claim 7 to 9, which is characterized in that described device further include:
Resolution unit, the load data and mesh in response data for parsing the heterogeneous networks client from the host
The address of marking device and port information；
Encapsulation unit will be parsed for the mapping table according to preset networking client and the communication protocol of target device
The load data from networking client Resealed according to the communication protocol of corresponding target device.
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| CN201511028020.0A CN105611398B (en) | 2015-12-31 | 2015-12-31 | A kind of method and apparatus using Conditional Access Module network data |
| PCT/CN2016/085103 WO2017113618A1 (en) | 2015-12-31 | 2016-06-07 | Network data distributing and processing method and apparatus based on conditional access module |
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| CN201511028020.0A CN105611398B (en) | 2015-12-31 | 2015-12-31 | A kind of method and apparatus using Conditional Access Module network data |
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| CN105554540B (en) * | 2015-12-31 | 2019-04-09 | 深圳国微技术有限公司 | The implementation method and device of a kind of network interface in condition receiving card |
| CN105611398B (en) * | 2015-12-31 | 2019-04-23 | 深圳国微技术有限公司 | A kind of method and apparatus using Conditional Access Module network data |
| CN106941616B (en) * | 2017-02-23 | 2020-02-14 | 深圳国微技术有限公司 | CAM card, multicast and repair implementation method based on CAM card and CAM card device |
| CN107026712B (en) * | 2017-03-06 | 2020-06-16 | 深圳国微技术有限公司 | Code stream transmission method and device |
| CN112637650B (en) * | 2021-01-04 | 2023-06-27 | 国微集团(深圳)有限公司 | Conditional access module |
| CN113518106A (en) * | 2021-04-06 | 2021-10-19 | 惠州市德赛西威智能交通技术研究院有限公司 | Virtual machine interaction system and method based on SOME/IP protocol |
| CN113891380B (en) * | 2021-09-30 | 2024-03-15 | 西安四叶草信息技术有限公司 | Virtual wireless network processing system and method |
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| WO2017113618A1 (en) | 2017-07-06 |
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