CN112637650B - Conditional access module - Google Patents

Conditional access module Download PDF

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Publication number
CN112637650B
CN112637650B CN202110001200.9A CN202110001200A CN112637650B CN 112637650 B CN112637650 B CN 112637650B CN 202110001200 A CN202110001200 A CN 202110001200A CN 112637650 B CN112637650 B CN 112637650B
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China
Prior art keywords
module
television
broadcast
conditional access
network
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CN202110001200.9A
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CN112637650A (en
Inventor
姜沛源
李明崖
刘华预
向柄宇
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Guowei Group Shenzhen Co ltd
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Guowei Group Shenzhen Co ltd
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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
    • 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]
    • 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
    • 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
    • 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 condition receiving 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, a special channel is established, 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 taking electricity from a television to supply power to the condition receiving module and sending multimedia data acquired by the condition receiving module to the television for playing. The conditional access module can directly establish communication connection with the broadcast television network server.

Description

Conditional access module
Technical Field
The invention relates to the field of digital televisions, in particular to a conditional access module.
Background
The digital television conditional access module (Conditional Access Module, CAM) is a solution provided for the multi-secret technology, and the whole decryption and descrambling process can be completed by using the digital television conditional access module, so that the actual separation of the machine and the card is realized. The digital television condition receiving module is mainly used for receiving the data of the transmission stream processed by the digital television host, judging whether the current user belongs to a paid legal user according to the content of the data and the information carried by the digital television host, if so, filtering the encrypted scrambling information in the transmission stream, sending the encrypted scrambling information back to the digital television host for decoding processing, and if not, not carrying out any processing on the transmission stream and returning the encrypted scrambling information to the original state.
Because of the limited resources of CAM cards, direct access to the Internet network has been lacking. At present, 2 main network access modes exist, one is to access a network through host transfer, the dependence degree of the mode on the host is higher, the host is required to access the Internet, the CAM and the data communication of the host have enough bandwidth, the communication is smooth, the realization of the module by the hosts of different brands is quite different, the compatibility problem is easy to introduce, and the practical value is low. The other is that the CAM itself forms a Wi-Fi module, and accesses the Internet through a Wi-Fi network, and the scheme requires the existence of Wi-Fi signals in the use environment due to the characteristic of small coverage area of Wi-Fi, so that limitation exists.
Disclosure of Invention
The invention aims to solve the technical problem that the use 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, there is provided a conditional access module, including:
the eSIM module is used for storing the identity information of the conditional access module, and the identity information is used for carrying out identity verification on the conditional access module by the broadcast television network server;
the cellular network module is used for carrying out wireless communication with the broadcast television network server, carrying out identity verification with the broadcast television network server by adopting the identity information in the eSIM module, and establishing a special channel;
the DRM module is used for carrying out digital copyright authentication on the multimedia content provided by the broadcast television network server and obtaining 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 television network server;
and the USB module is used for taking 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 for playing.
In the 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 analysis module and outputting the decoded data to a television through the USB module.
In the 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 the 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;
and a demodulator for demodulating the received digital television broadcast signal into a TS stream.
In the 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 path for the CAM through the eSIM and the cellular network, can provide large-bandwidth data communication, and make up for the defect of the prior standard in the aspect of network access; the problem of higher peak current in the starting process of a cellular network module is solved through a USB4.0 interface supporting high power; the USB interface of the television is detected, the signal receiving mode of the television is judged, the support for the audio and video output mode is increased on the basis of being compatible with the CI mode, and the automatic selection of the mode is realized through the bottom layer drive.
Drawings
Fig. 1 is a schematic diagram of a conditional access module according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, in an 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, digital rights management) module 3, an IP network data parsing module 4, a decoding module 5, a trans-tolerance module 6, a broadcast data parsing module 7, a descrambling module 8, and a USB module 9. The following description will be given separately.
The eSIM module 1 is used for storing the identity information of the conditional access module, and the identity information is used for the broadcast television network server to carry out identity verification on the conditional access module. It should be noted that eSIM is an Embedded-SIM card. esims are devices that embed a traditional SIM card directly onto a device chip, rather than being added to the device as a separate removable component, without the user having to insert a physical SIM card.
The cellular network module 2 is configured to perform wireless communication with a broadcast and television network server through a mobile network of a communication operator, perform identity verification with the broadcast and television network server by adopting 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 cellular network module can be directly connected to a broadcast network server to acquire multimedia program information without adopting a local wired network or a WiFi network.
The DRM module 3 is used for carrying out digital copyright authentication on the multimedia content provided by the broadcast television network server and obtaining the right for accessing the multimedia content. It should be noted that, after the condition receiving module establishes communication connection with the broadcast and television network server through the cellular network module 2, if the multimedia content with digital rights needs to be obtained, the DRM module 3 and the broadcast and television network server need to be adopted to perform digital rights authentication, and the corresponding multimedia content can be obtained after the authentication is passed.
The IP network data parsing module 4 is configured to parse network data acquired by the cellular network module 2 from a broadcast and television network server. It should be noted that, the network data obtained by the cellular network module 2 from the broadcast and television 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 audio multimedia format multimedia data, such as MPEG-2 data.
The decoding module 5 is configured to decode the multimedia data parsed by the IP network data parsing module 4, and output the decoded data to a television through the USB module 9. It should be noted that, the signal transmission between the condition receiving module and the television has two modes, namely, a video output mode and a CI (Common Interface) mode, and in the video output mode, the multimedia data output by the IP network data analyzing module 4 is decoded in the decoding module 5 and then directly transmitted to the television for playing. In the CI mode, the 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 directly transmits the multimedia data in MPEG-2 format to the television through the USB module 9.
The capacity conversion module 6 is configured to convert the multimedia data parsed by the IP network data parsing module 4 into a multimedia format that can be processed by the decoding module 5 or a television. In the video output mode, the capacity conversion module 6 converts the multimedia data parsed by the IP network data parsing module 4 into a multimedia format that can be processed by the decoding module 5. In the CI mode, the capacity transferring module 6 converts the multimedia data analyzed by the IP network data analyzing module 4 into an MPEG-2 format which can be processed by a television.
The broadcast data parsing module 7 is configured to parse a digital television broadcast signal. The broadcast data parsing module includes a tuner and a demodulator. The tuner is used for receiving digital television broadcast signals. The demodulator is used for demodulating the received digital television broadcast signal into TS stream. In some national or regional policies, the condition receiving module is required to be able to process not only IP network data but also digital television broadcast signals. Therefore, in the embodiment of the present invention, the broadcast data parsing module 7 is used for parsing the digital television broadcast signal.
The descrambling module 8 is configured to descramble the data parsed by the broadcast data parsing module 7, and send the descrambled data to a television through the USB module 9 for playing.
The USB module 9 is used for taking 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 electricity is taken from the television through the USB module 9. Meanwhile, the USB interface of the television is detected, the signal receiving mode of the television is judged, the support for the audio and video output mode is increased on the basis of being compatible with the CI mode, and the automatic selection of the mode is realized through the bottom layer drive.
In summary, by adopting the conditional access module and the conditional access system, the direct network access way is provided for the CAM through the eSIM and the cellular network, and the large-bandwidth data communication can be provided, so that the defect of the existing standard in the aspect of network access is overcome; the problem of higher peak current in the starting process of a cellular network module is solved through a USB4.0 interface supporting high power; the USB interface of the television is detected, the signal receiving mode of the television is judged, the support for the audio and video output mode is increased on the basis of being compatible with the CI mode, and the automatic selection of the mode is realized through the bottom layer drive.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (7)

1. A conditional access module, comprising:
the eSIM module is used for storing the identity information of the conditional access module, and the identity information is used for carrying out identity verification on the conditional access module by the broadcast television network server;
the cellular network module is used for carrying out wireless communication with the broadcast television network server, carrying out identity verification with the broadcast television network server by adopting the identity information in the eSIM module, and establishing a special channel;
the DRM module is used for carrying out digital copyright authentication on the multimedia content provided by the broadcast television network server and obtaining 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 television network server;
the USB module is used for taking electricity 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 for playing,
the USB module is also used for detecting a USB interface of the television, judging a signal receiving mode of the television and realizing automatic selection of the mode through bottom driving.
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 analysis module and outputting the decoded data to a 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 access module of claim 4, wherein the broadcast data parsing module comprises:
a tuner for receiving a digital television broadcast signal;
and a demodulator for demodulating the received digital television broadcast 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.
CN202110001200.9A 2021-01-04 2021-01-04 Conditional access module Active CN112637650B (en)

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