CN112637650A - Condition receiving module - Google Patents
Condition receiving module Download PDFInfo
- Publication number
- CN112637650A CN112637650A CN202110001200.9A CN202110001200A CN112637650A CN 112637650 A CN112637650 A CN 112637650A CN 202110001200 A CN202110001200 A CN 202110001200A CN 112637650 A CN112637650 A CN 112637650A
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- China
- Prior art keywords
- module
- television
- broadcast
- network
- conditional access
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a conditional access module which comprises an eSIM module, a cellular network module, a DRM module, an IP network data analysis module and a USB module, wherein the cellular network module adopts identity information in the eSIM module to carry out identity verification with a broadcast television network server and establish a special channel, the IP network data analysis module is used for analyzing network data acquired by the cellular network module from the broadcast television network server, and the USB module is used for getting electricity from a television to supply power to the conditional access module and sending multimedia data acquired by the conditional access module to the television to play. The conditional access module can directly establish communication connection with the broadcast network server.
Description
Technical Field
The invention relates to the field of digital televisions, in particular to a conditional access module.
Background
A Conditional Access Module (CAM) of digital television is a solution proposed for the multi-encryption technology, and the whole process of decryption and descrambling can be completed by using the CAM, thereby realizing the separation of the set and the card in the true sense. The digital television condition receiving module is mainly used for receiving the transmission stream data processed by the digital television host, judging whether the current user belongs to a paid legal user according to the content of the transmission stream data and the information carried by the module, if so, filtering out the encrypted scrambling information in the transmission stream, sending the encrypted scrambling information back to the digital television host for decoding, and if not, returning the transmission stream without any processing and directly returning the transmission stream.
Because of the limited resources of CAM cards, direct access to the Internet network has been lacking. At present, 2 network access modes are available, one mode is to access the network through host transfer, the dependence degree of the mode on the host is higher, firstly, the host is required to access the Internet, secondly, the data communication between the CAM and the host needs to have enough bandwidth, the communication is smooth, the actual situation is that the realization of the module by the hosts of different brands is different, the compatibility problem is easily introduced, and the practical value is not high. The other is that the CAM is a Wi-Fi module, the Internet is accessed through a Wi-Fi network, and due to the fact that Wi-Fi has the characteristic of small coverage area, the scheme requires that Wi-Fi signals exist in the using environment, and limitation exists.
Disclosure of Invention
The invention aims to solve the technical problem that the service environment of a conditional access module in the prior art is limited by a network, and provides the conditional access module.
In an embodiment of the present invention, a conditional access module is provided, which includes:
the eSIM module is used for storing the identity information of the condition receiving module, and the identity information is used for the broadcast television network server to carry out identity verification on the condition receiving module;
the cellular network module is used for carrying out wireless communication with the broadcast television network server, carrying out identity authentication with the broadcast television network server by adopting identity information in the eSIM module and establishing a special channel;
the DRM module is used for performing digital copyright authentication on the multimedia content provided by the broadcast television network server and acquiring the authority for accessing the multimedia content;
the IP network data analysis module is used for analyzing the network data acquired by the cellular network module from the broadcast network server;
and the USB module is used for getting power from the television to supply power to the condition receiving module and sending the multimedia data acquired by the condition receiving module to the television to be played.
In this embodiment of the present invention, the conditional access module further includes:
and the decoding module is used for decoding the multimedia data analyzed by the IP network data analyzing module and outputting the decoded data to the television through the USB module.
In this embodiment of the present invention, the conditional access module further includes:
and the capacity conversion module is used for converting the multimedia data analyzed by the IP network data analysis module into a multimedia format which can be processed by the decoding module or the television.
In this embodiment of the present invention, the conditional access module further includes:
and the broadcast data analysis module is used for analyzing the digital television broadcast signals.
In an embodiment of the present invention, the broadcast data parsing module includes:
a tuner for receiving a digital television broadcast signal;
a demodulator for demodulating the received digital television broadcasting signal into a TS stream.
In this embodiment of the present invention, the conditional access module further includes:
and the descrambling module is used for descrambling the data analyzed by the broadcast data analysis module.
In the embodiment of the invention, the USB module adopts a USB4.0 interface
Compared with the prior art, the conditional access module and the conditional access system provide a direct network access way for the CAM through the eSIM and the cellular network, can provide large-bandwidth data communication, and make up for the defects of the existing standard in the aspect of network access; the problem of high peak current in the starting process of a cellular network module is solved by supporting a high-power USB4.0 interface; the signal receiving mode of the television is judged by detecting the USB interface of the television, the support for the audio and video output mode is added on the basis of being compatible with the CI mode, and the mode is automatically selected by the bottom layer drive.
Drawings
Fig. 1 is a schematic structural diagram of a conditional access module according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, in the embodiment of the present invention, a conditional access module is provided, which includes an eSIM module 1, a cellular network module 2, a DRM (Digital Right Management) module 3, an IP network data parsing module 4, a decoding module 5, a transforming module 6, a broadcast data parsing module 7, a descrambling module 8, and a USB module 9. The following description will be made separately.
The eSIM module 1 is configured to store identity information of the condition acceptance module, where the identity information is used for the broadcast television network server to perform identity authentication on the condition acceptance module. Note that the eSIM is an Embedded-SIM, Embedded SIM card. esims are devices that embed a traditional SIM card directly onto the device chip rather than adding it as a separate removable component to the device, and the user does not need to plug in a physical SIM card.
The cellular network module 2 is configured to perform wireless communication with a broadcast network server through a mobile network of a communications operator, perform authentication with the broadcast network server using the identity information in the eSIM module 1, and establish a dedicated channel. The cellular network module 2 can support a 5G communication network and a 4G communication network, so that the multimedia program information can be directly connected to a broadcast network server to obtain without using a local wired network or a WiFi network.
The DRM module 3 is configured to perform digital rights authentication on the multimedia content provided by the broadcast television network server, and acquire a right to access the multimedia content. It should be noted that, after the conditional access module establishes a communication connection with the broadcast television network server through the cellular network module 2, if a multimedia content with a digital right needs to be acquired, the DRM module 3 needs to perform digital right authentication with the broadcast television network server, and the corresponding multimedia content can be acquired only after the authentication is passed.
The IP network data analyzing module 4 is configured to analyze the network data acquired by the cellular network module 2 from the broadcast network server. It should be noted that the network data acquired by the cellular network module 2 from the broadcast network server is an IP data packet under a network communication protocol, and the IP network data parsing module 4 parses the IP data packet to obtain multimedia data in an audio multimedia format, such as MPEG-2 data.
The decoding module 5 is configured to decode the multimedia data analyzed by the IP network data analyzing module 4, and output the decoded data to the television through the USB module 9. It should be noted that the signal transmission between the conditional access module and the television has two modes, namely a video output mode and a Common Interface (CI) mode, and in the video output mode, the multimedia data output by the IP network data parsing module 4 is decoded in the decoding module 5 and then directly transmitted to the television for playing. In the CI mode, multimedia data in MPEG-2 format supported by the television is transmitted to the television, and the decoding module 5 does not need to decode, and the multimedia data in MPEG-2 format is directly transmitted to the television through the USB module 9.
The capacity conversion module 6 is configured to convert the multimedia data analyzed by the IP network data analysis module 4 into a multimedia format that can be processed by the decoding module 5 or the television. In the video output mode, the capacity conversion module 6 converts the multimedia data analyzed by the IP network data analysis module 4 into a multimedia format that can be processed by the decoding module 5. In the CI mode, the capacity conversion module 6 converts the multimedia data analyzed by the IP network data analysis module 4 into an MPEG-2 format that can be processed by the television.
And the broadcast data analysis module 7 is used for analyzing the digital television broadcast signals. The broadcast data parsing module includes a tuner and a demodulator. The tuner is used for receiving digital television broadcasting signals. The demodulator is used for demodulating the received digital television broadcasting signals into TS streams. It should be noted that in some national or regional policies, not only the conditional access module is required to be able to process IP network data, but also the conditional access module is required to be able to process digital television broadcast signals. Therefore, in the embodiment of the present invention, the broadcast data parsing module 7 is used for parsing a digital television broadcast signal.
And the descrambling module 8 is used for descrambling the data analyzed by the broadcast data analyzing module 7 and then sending the descrambled data to a television for playing through the USB module 9.
And the USB module 9 is used for getting power from the television and sending the multimedia data obtained by the condition receiving module to the television for playing. It should be noted that, in the embodiment of the present invention, the USB module 9 adopts a USB4.0 interface. The condition receiving module is connected with the television through the USB module 9, and power is taken from the television through the USB module 9. Meanwhile, a USB interface of the television is detected, a signal receiving mode of the television is judged, support for an audio and video output mode is added on the basis of compatibility with a CI mode, and automatic selection of the mode is realized through bottom layer driving.
In summary, the conditional access module and the conditional access system of the invention provide a direct network access path for CAM through eSIM and cellular network, and can provide large bandwidth data communication, making up the deficiency of the existing standard in network access; the problem of high peak current in the starting process of a cellular network module is solved by supporting a high-power USB4.0 interface; the signal receiving mode of the television is judged by detecting the USB interface of the television, the support for the audio and video output mode is added on the basis of being compatible with the CI mode, and the mode is automatically selected by the bottom layer drive.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A conditional access module, comprising:
the eSIM module is used for storing the identity information of the condition receiving module, and the identity information is used for the broadcast television network server to carry out identity verification on the condition receiving module;
the cellular network module is used for carrying out wireless communication with the broadcast television network server, carrying out identity authentication with the broadcast television network server by adopting identity information in the eSIM module and establishing a special channel;
the DRM module is used for performing digital copyright authentication on the multimedia content provided by the broadcast television network server and acquiring the authority for accessing the multimedia content;
the IP network data analysis module is used for analyzing the network data acquired by the cellular network module from the broadcast network server;
and the USB module is used for getting power from the television to supply power to the condition receiving module and sending the multimedia data acquired by the condition receiving module to the television to be played.
2. The conditional access module of claim 1, further comprising:
and the decoding module is used for decoding the multimedia data analyzed by the IP network data analyzing module and outputting the decoded data to the television through the USB module.
3. The conditional access module of claim 2, further comprising:
and the capacity conversion module is used for converting the multimedia data analyzed by the IP network data analysis module into a multimedia format which can be processed by the decoding module or the television.
4. The conditional access module of claim 1, further comprising:
and the broadcast data analysis module is used for analyzing the digital television broadcast signals.
5. The conditional reception module of claim 4, wherein the broadcast data parsing module comprises:
a tuner for receiving a digital television broadcast signal;
a demodulator for demodulating the received digital television broadcasting signal into a TS stream.
6. The conditional access module of claim 4, further comprising:
and the descrambling module is used for descrambling the data analyzed by the broadcast data analysis module.
7. The conditional access module of claim 1, wherein the USB module employs a USB4.0 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001200.9A CN112637650B (en) | 2021-01-04 | 2021-01-04 | Conditional access module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001200.9A CN112637650B (en) | 2021-01-04 | 2021-01-04 | Conditional access module |
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| CN112637650A true CN112637650A (en) | 2021-04-09 |
| CN112637650B CN112637650B (en) | 2023-06-27 |
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| CN112637650B (en) | 2023-06-27 |
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