CN113747220A - Method and system for realizing DVB (digital video broadcasting) receiving of mobile terminal based on coaxial gateway - Google Patents
Method and system for realizing DVB (digital video broadcasting) receiving of mobile terminal based on coaxial gateway Download PDFInfo
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- CN113747220A CN113747220A CN202111036165.0A CN202111036165A CN113747220A CN 113747220 A CN113747220 A CN 113747220A CN 202111036165 A CN202111036165 A CN 202111036165A CN 113747220 A CN113747220 A CN 113747220A
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- dvb
- tuner
- mobile terminal
- network controller
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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
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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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
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access 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]
- H04N21/40—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
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- 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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a method and a system for realizing DVB (digital video broadcasting) broadcast reception of a mobile terminal based on a coaxial gateway. The invention can receive DVB television signals and network signals and carry out data transmission with a mobile phone or a tablet personal computer, thereby realizing that mobile terminals such as a mobile phone end or a tablet personal computer end and the like can access the Internet while watching cable television DVB broadcasts.
Description
Technical Field
The invention relates to the technical field of cable television DVB (digital video broadcasting), in particular to a method and a system for realizing that a mobile terminal receives DVB broadcast based on a coaxial gateway.
Background
Cable operators currently transmit DVB broadcast television signals and internet data signals using a coaxial cable access network. The DVB television has the advantages of small occupied bandwidth and high transmission efficiency, but can be watched only through a set top box and a television at present, cannot cover mobile terminals such as mobile phones and tablet personal computers, and is increasingly not in line with the watching habit of current users.
Compared with the mode that the mobile terminal watches the internet video through the mobile network, the mode that the video is watched through DVB broadcast has the advantages of obviously saving bandwidth, saving energy, protecting environment and the like, high-definition television can be smoothly watched, user experience is good, and the situations that the mobile internet television is blocked, delayed and the like due to insufficient bandwidth of the mobile network are avoided.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, and provides a method and a system for realizing that a mobile terminal receives DVB (digital video broadcasting) broadcast based on a coaxial gateway, so as to solve the problem that the mobile terminal can only surf the internet through a coaxial cable access network and cannot watch DVB television broadcast under the environment covered by the coaxial cable access network.
In order to achieve the purpose, the invention provides the following technical scheme:
a system for realizing mobile terminal receiving DVB broadcast based on coaxial gateway is characterized in that: the device comprises a first tuner, a video descrambler, a CA card, a network controller, a WIFI transceiver and a network interface exchange controller, wherein the first tuner is electrically connected with the video descrambler, the video descrambler is electrically connected with the CA card on one hand and the network controller on the other hand, the network controller is electrically connected with the WIFI transceiver on the one hand and the network interface exchange controller on the other hand.
Further, the first tuner has a demodulation function, and can convert a DVB broadcast signal into a TS stream and deliver the TS stream to the video descrambler.
Furthermore, the system also comprises a second tuner and a DOCSIS module, wherein the second tuner is electrically connected with the DOCSIS module, and the DOCSIS module is electrically connected with the port switching controller.
Furthermore, the first tuner, the second tuner, the video descrambler, the CA card, the network controller, the network interface switching controller, the WIFI transceiver and the DOCSIS module are integrated on the same circuit board.
Further, the input ends of the first tuner and the second tuner are connected with a coaxial cable for transmitting DVB television and network signals in a common mode.
A method for realizing mobile terminal receiving DVB broadcast based on coaxial cable gateway is characterized in that: the first tuner converts DVB television signals into TS (transport stream) and sends the TS to the video descrambler, the video descrambler is matched with the CA card to descramble the TS and sends the descrambled TS to the network controller, the network controller encapsulates the descrambled TS into tcp (transmission control protocol) data, and the tcp data is sent to the mobile terminal through the WIFI transceiver, so that the DVB broadcast of the cable television is received through the mobile terminal;
the second tuner converts network signals into TS (transport stream) or intermediate frequency signals and sends the TS or intermediate frequency signals to the DOCSIS module, the TS or intermediate frequency signals are demodulated and decoded by the DOCSIS module and then sent to the network controller, and the network controller sends the TS or intermediate frequency signals to the mobile terminal through the WIFI transceiver to realize the access of the mobile terminal to the internet.
Furthermore, the mobile terminal adopts a mobile phone or a tablet computer.
Further, a playing client is installed on the mobile phone or the tablet computer, the user can select a certain DVB program in the favorite DVB broadcast through the playing client, the mobile phone or the tablet computer sends the information of the DVB program selected by the user to the network controller, and the network controller controls the first tuner to work in the frequency band containing the DVB program according to the information of the DVB program, so that the first tuner can transmit the TS stream containing the program to the video descrambler.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adds the function of descrambling the DVB television by de-CA on the basis of the DOCSIS gateway, realizes the problem that the mobile terminal watches the DVB broadcast television in the coverage range of the cable television to the home, and the mobile terminal does not need to watch the broadcast television through the mobile internet, thereby consuming less network resources and having good user experience.
2. The invention is provided with the first tuner, the second tuner and the corresponding DVB TS stream processing and network processing module, can be respectively used for receiving DVB television signals and Internet signals and respectively used for carrying out data transmission with a mobile phone or a tablet personal computer, and can realize Internet connection while watching cable television DVB broadcast through a coaxial cable network by using a mobile terminal (the mobile phone or the tablet personal computer and the like).
Drawings
Fig. 1 is a schematic block diagram of the structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a system for realizing that a mobile terminal receives DVB broadcasts based on a coaxial gateway includes a first tuner 1, a video descrambler 2, a CA card 3, a network controller 4, a WIFI transceiver 5, and a network interface switching controller 6, where the first tuner 1 is electrically connected to the video descrambler 2, the video descrambler 2 is electrically connected to the CA card 3 on one hand and the network controller 4 on the other hand, and the network controller 4 is electrically connected to the WIFI transceiver 5 on one hand and the network interface switching controller 6 on the other hand.
In the invention, the first tuner 1 has a demodulation function and can convert DVB broadcast signals into TS streams and then transmit the TS streams to the video descrambler 2.
The invention also comprises a second tuner 8 and a DOCSIS module 9, wherein the second tuner 8 is electrically connected with the DOCSIS module 9, and the DOCSIS module 9 is electrically connected with the network port exchange controller 6.
In the invention, a first tuner 1, a second tuner 8, a video descrambler 2, a CA card 3, a network controller 4, a network interface exchange controller 6, a WIFI transceiver 5 and a DOCSIS module 9 are integrated on the same circuit board. Thus, integration, miniaturization, and space saving can be achieved.
In the invention, the input ends of the first tuner 1 and the second tuner 8 are connected with a coaxial cable for transmitting DVB television and network signals. Thereby enabling the first tuner 1 to receive DVB television signals and the second tuner 8 to receive DOCSIS signals, i.e. network signals.
A method for realizing DVB broadcast reception of a mobile terminal based on a coaxial gateway specifically comprises the following steps:
the first tuner 1 converts DVB television signals into TS (transport stream) and sends the TS to the video descrambler 2, the video descrambler 2 is matched with the CA card 3 to descramble the TS (namely, video stream, the same below), the descrambled TS is sent to the network controller 4, the network controller 4 encapsulates the descrambled TS into tcp (transmission control protocol) data, and the tcp data is sent to mobile terminals such as a mobile phone 10 or a tablet computer 7 through the WIFI (wireless fidelity) transceiver 5, so that the DVB broadcasting of cable television is watched through the mobile terminals such as a mobile phone end or a tablet computer end.
Specifically, one part of the TS stream carries information of a PMT table and a CAT table, and the other part (most part) is EMM and ECM video information, the video descrambler 2 sends the TS stream carrying the PMT table and the CAT table to the network controller 4, and the network controller 4 analyzes information such as EMM _ PIDS, ECM _ PIDS, and casystems from the TS stream;
the network controller 4 sets PID (mark, the same below) of EMM and ECM to the video descrambler 2, the video descrambler 2 judges PID of TS stream according to PID of EMM and ECM, and transmits the part of TS stream containing video information of EMM and ECM of the PID back to the network controller 4 in real time;
because the CA card 3 stores therein an encrypted system number, an ECM key, and an EMM key, the network controller 4 decrypts the encrypted EMM video information using the EMM key to determine whether the program is authorized, and decrypts the EMM video information using the ECM key to obtain a CW word (i.e., a codeword, the same applies below) if the program is authorized;
the network controller 4 sets the CW word to a register corresponding to the video descrambler 2, and the video descrambler 2 descrambles the scrambled TS stream by using the CW word, that is, the descrambled TS stream is sent to the network controller 4.
It should be noted that, a playing client (APP) is installed on the mobile phone 10 or the tablet computer 7, the user may select a certain DVB program in the favorite DVB broadcast through the playing client (APP), the mobile phone 10 or the tablet computer 7 sends information of the DVB program selected by the user to the network controller 4, and the network controller 4 controls the first tuner 1 to operate in a frequency band including the DVB program according to the information of the DVB program, so that the first tuner 1 may transmit a TS stream including the program to the video descrambler 2.
The second tuner 8 converts the network signal into a TS stream or an intermediate frequency signal and sends the TS stream or the intermediate frequency signal to the DOCSIS module 9, the TS stream or the intermediate frequency signal is demodulated and decoded by the DOCSIS module 9 and then sent to the network controller 4, and the network controller 4 sends the TS stream or the intermediate frequency signal to the mobile terminals such as the mobile phone 10 or the tablet computer 7 through the WIFI transceiver 5, so that the mobile terminals such as the mobile phone terminal or the tablet computer terminal access the internet.
It should be noted that, before watching DVB (digital video broadcasting) broadcast, the mobile phone 10 or the tablet computer 7 needs to be connected to the internet through the WIFI transceiver 5, the network controller 4, the second tuner 8 and the DOCSIS module 9.
After the mobile phone 10 or the tablet computer 7 accesses the internet, the IP address of the server of the radio and television operator can be automatically detected through the multicast message; if the IP address of the server of the radio and television operator can not be manually filled in to establish network connection;
the network controller 4 will automatically check whether the program list needs to be updated at intervals, if so, the program list is updated, that is, the channel is searched, and certainly, the channel can be searched by clicking a channel searching button on a client (hereinafter referred to as a client) installed on the mobile phone 10 or the tablet computer 7 and used for playing the television program, so that the network controller 4 obtains the channel table from the TS stream; after the channel searching is completed, the mobile phone 10 or the tablet computer 7 can request the program list and display all television channels on the client;
clicking a play button of a certain television program on a client, controlling the first tuner 1 by the network controller 4 according to channel information stored in the channel searching process, and then forwarding the corresponding program to the mobile phone 10 or the tablet computer 7 according to the process, so as to realize watching of cable television DVB broadcast by mobile terminals such as the mobile phone terminal or the tablet computer terminal.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (8)
1. A system for realizing mobile terminal receiving DVB broadcast based on coaxial gateway is characterized in that: the device comprises a first tuner, a video descrambler, a CA card, a network controller, a WIFI transceiver and a network interface exchange controller, wherein the first tuner is electrically connected with the video descrambler, the video descrambler is electrically connected with the CA card on one hand and the network controller on the other hand, the network controller is electrically connected with the WIFI transceiver on the one hand and the network interface exchange controller on the other hand.
2. The system for enabling a mobile terminal to receive DVB broadcasts based on a coaxial gateway according to claim 1, wherein: the first tuner has a demodulation function and can convert DVB broadcast signals into TS streams and then transmit the TS streams to the video descrambler.
3. The system according to claim 1, wherein the system for enabling the mobile terminal to receive the DVB broadcast based on the coaxial gateway is characterized in that: still including second tuner and DOCSIS module, the second tuner with the DOCSIS module electricity is connected, the DOCSIS module with the network port switching controller electricity is connected.
4. The system according to claim 3, wherein the system for enabling the mobile terminal to receive the DVB broadcast based on the coaxial gateway is characterized in that: the first tuner, the second tuner, the video descrambler, the CA card, the network controller, the network port exchange controller, the WIFI transceiver and the DOCSIS module are integrated on the same circuit board.
5. The system according to claim 3, wherein the system for enabling the mobile terminal to receive the DVB broadcast based on the coaxial gateway is characterized in that: the input ends of the first tuner and the second tuner are connected with a coaxial cable for transmitting DVB television and network signals in common.
6. A method for enabling a mobile terminal to receive DVB broadcasts based on a coaxial cable gateway according to any one of the systems of claims 1-5, wherein: the first tuner converts DVB television signals into TS (transport stream) and sends the TS to the video descrambler, the video descrambler is matched with the CA card to descramble the TS and sends the descrambled TS to the network controller, the network controller encapsulates the descrambled TS into tcp (transmission control protocol) data, and the tcp data is sent to the mobile terminal through the WIFI transceiver, so that the DVB broadcast of the cable television is received through the mobile terminal;
the second tuner converts network signals into TS (transport stream) or intermediate frequency signals and sends the TS or intermediate frequency signals to the DOCSIS module, the TS or intermediate frequency signals are demodulated and decoded by the DOCSIS module and then sent to the network controller, and the network controller sends the TS or intermediate frequency signals to the mobile terminal through the WIFI transceiver to realize the access of the mobile terminal to the internet.
7. The method for enabling a mobile terminal to receive DVB broadcasts based on a coaxial cable gateway as claimed in claim 6, wherein: the mobile terminal adopts a mobile phone or a tablet personal computer.
8. The method for enabling a mobile terminal to receive DVB broadcasts based on a coaxial cable gateway as claimed in claim 7, wherein: the mobile phone or the tablet personal computer is provided with a playing client, a user can select a certain favorite DVB program in DVB broadcast through the playing client, the mobile phone or the tablet personal computer sends information of the DVB program selected by the user to the network controller, and the network controller controls the first tuner to work in a frequency band containing the DVB program according to the information of the DVB program, so that the first tuner can transmit TS (transport stream) containing the program to the video descrambler.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111036165.0A CN113747220A (en) | 2021-09-06 | 2021-09-06 | Method and system for realizing DVB (digital video broadcasting) receiving of mobile terminal based on coaxial gateway |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111036165.0A CN113747220A (en) | 2021-09-06 | 2021-09-06 | Method and system for realizing DVB (digital video broadcasting) receiving of mobile terminal based on coaxial gateway |
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| CN113747220A true CN113747220A (en) | 2021-12-03 |
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| CN202111036165.0A Pending CN113747220A (en) | 2021-09-06 | 2021-09-06 | Method and system for realizing DVB (digital video broadcasting) receiving of mobile terminal based on coaxial gateway |
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| CN102946558A (en) * | 2012-11-19 | 2013-02-27 | 中国计量学院 | Method and device for receiving broadcasting digital television by intelligent mobile phone |
| CN203352720U (en) * | 2013-03-04 | 2013-12-18 | 广东智慧家庭物联网科技有限公司 | DVB digital television wireless broadcast gateway device |
| CN204244429U (en) * | 2014-12-16 | 2015-04-01 | 成都德鸿科技有限公司 | Ground digital television signal receives forwarded device |
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2021
- 2021-09-06 CN CN202111036165.0A patent/CN113747220A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080120667A1 (en) * | 2006-11-17 | 2008-05-22 | Texas Instruments Incorporated | Hybrid mpeg/ip digital cable gateway device and architecture associated therewith |
| CN201813496U (en) * | 2010-09-21 | 2011-04-27 | 北京歌华有线数字媒体有限公司 | Digital video broadcasting (DVB) video gateway system |
| CN202334795U (en) * | 2011-10-12 | 2012-07-11 | 北京歌华有线数字媒体有限公司 | Satellite broadcasting-based mobile wireless video service system |
| CN202679539U (en) * | 2012-06-21 | 2013-01-16 | 深圳国微技术有限公司 | Digital television signal forwarding apparatus and digital television watching system |
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