CN106998480B - Method, LNB and system for interactive verification of direct broadcast satellite television - Google Patents

Method, LNB and system for interactive verification of direct broadcast satellite television Download PDF

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CN106998480B
CN106998480B CN201710149408.9A CN201710149408A CN106998480B CN 106998480 B CN106998480 B CN 106998480B CN 201710149408 A CN201710149408 A CN 201710149408A CN 106998480 B CN106998480 B CN 106998480B
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lnb
top box
set top
data
broadcast satellite
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CN106998480A (en
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李燕如
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Techtotop Microelectronics Co Ltd
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Techtotop Microelectronics 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]
    • H04N21/20—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
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • H04N21/25816—Management of client data involving client authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0869—Network architectures or network communication protocols for network security for authentication of entities for achieving mutual authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
    • 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
    • H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Power Engineering (AREA)
  • Computer Graphics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The invention discloses a method for interactive verification of a direct broadcast satellite television, an LNB and a system, wherein the method comprises the following steps: after the set top box and a direct broadcast satellite tuner LNB form signal connection, the LNB acquires ID data of the set top box and carries out validity verification on the set top box based on the ID of the set top box; and when the LNB verifies that the set-top box is legal, a direct broadcast satellite signal channel is established between the set-top box and the LNB. In the embodiment of the invention, the validity verification of the set top box can be realized based on the LNB, a signal channel can be established only by verifying the set top box authorized by the radio and television administration department, and the whole direct broadcast satellite television signal can be received based on the signal channel.

Description

Method, LNB and system for interactive verification of direct broadcast satellite television
Technical Field
The invention relates to the technical field of direct broadcast satellite televisions, in particular to a direct broadcast satellite television interactive verification method, a set top box and a system.
Background
With the development of information technology, a direct broadcast television satellite tuner is greatly popularized in rural areas, but as market emulational set-top boxes and positioning-free set-top boxes are more and more, even more state-bidding set-top boxes are taken to cities for use, the market of local wired digital set-top boxes is impacted, and confusion is caused to market and management. The central office of radio and television has thus introduced a product with a direct broadcast television satellite tuner receiving GNSS signals, the ultimate objective of which is to provide the subscribers of the radio and television users with a stable, high-quality, low-cost product that meets their technical needs, providing the customers with satisfactory products and services.
The LNB module with the positioning function has the following functions: the direct broadcast satellite television signal receiving device can receive a direct broadcast satellite television signal in a Ku waveband, and outputs an intermediate frequency signal of the direct broadcast satellite television signal of 950 MHz-1450 MHz through signal processing such as amplification, combination, filtering, down-conversion, intermediate frequency amplification and the like; meanwhile, the GNSS signals can be received, and the received GNSS signals are filtered and amplified; and finally, combining the direct broadcast television satellite intermediate frequency signal and the GNSS signal and then sending the combined direct broadcast television satellite intermediate frequency signal and the GNSS signal to a satellite receiver or a set top box for demodulation.
For each live broadcast satellite television terminal user, the live broadcast satellite television system is only one receiving system; the system receives satellite television signals through an outdoor down converter (namely LNB in common words), feeds the received television signals into an indoor set top box through a radio frequency cable for decoding, and then sends the decoded television signals to a television for playing.
At present, the system is a relatively mature direct broadcast satellite television receiving system, and the existing village communication and the existing household communication adopt the system, so that great social benefits are brought to vast rural areas and remote areas. Compared with the closed circuit television system in the city, the system has lower investment and is very popular in vast rural areas and remote areas. Some non-qualified manufacturers are also producing the relevant equipment and selling it through underground channels, which severely disturb the market. At present, the set top box and the LNB cannot be interactively verified, so that a non-qualified mountain village manufacturer can easily imitate the set top box, the LNB and the like, the function of a direct broadcast satellite television receiving system is realized, the market is disturbed, and potential safety access hazards are increased.
Disclosure of Invention
The invention aims to solve the problems, and provides a method for realizing the interaction of ID data between a set top box and an LNB (Low noise Block), which limits the set top box without qualification to realize the function of a direct broadcast satellite television receiving system, ensures the safety of system access and ensures that legal users use satellite television services.
In order to realize the aim of the invention, the invention provides a method for realizing the interactive verification of the live broadcast satellite television based on LNB, which comprises the following steps:
after the set top box and a direct broadcast satellite tuner LNB form signal connection, the LNB acquires ID data of the set top box and carries out validity verification on the set top box based on the ID of the set top box;
and when the LNB verifies that the set-top box is legal, a direct broadcast satellite signal channel is established between the set-top box and the LNB.
The LNB acquiring the ID data of the set top box includes:
the LNB sends an ID query request to the set top box and receives ID data of the set top box fed back to the LNB by the set top box based on the ID query request; or
And receiving the ID data of the set top box sent by the set top box.
And the LNB acquires the ID data of the set top box based on a baseband transmission mode or acquires the ID data of the set top box based on a subcarrier frequency band transmission mode.
Before the step of establishing a direct broadcast satellite signal channel between the set top box and the LNB, the method further comprises the following steps:
and the LNB sends the ID data of the LNB to the set top box, and the ID data of the LNB is used for verifying the validity of the LNB by the set top box.
The sending, by the LNB, the ID data of the LNB to the set top box includes:
and the LNB receives the ID query command sent by the set top box, and the LNB feeds back the ID data of the LNB to the set top box based on the ID query command.
Correspondingly, the invention also provides an LNB, comprising:
the acquisition module is used for acquiring the ID data of the set top box after the set top box and the direct broadcast satellite tuner LNB form signal connection;
the verification module is used for verifying the validity of the set top box based on the ID of the set top box;
and the interaction control module is used for establishing a direct broadcast satellite signal channel between the set top box and the LNB when the LNB verifies that the set top box is legal.
The acquisition module includes:
the receiving unit is used for receiving the ID data of the set top box sent by the set top box;
and the sending unit is used for sending the ID inquiry request to the set top box.
And the LNB acquires the ID data of the set top box based on a baseband transmission mode or acquires the ID data of the set top box based on a subcarrier frequency band transmission mode.
The LNB module further includes:
and the sending module is used for sending the ID data of the LNB to the set top box, and the ID data of the LNB is used for verifying the validity of the LNB by the set top box.
The sending module is further used for receiving the ID query command sent by the set top box and feeding back the ID data of the LNB to the set top box based on the ID query command.
Correspondingly, the invention also provides a system for interactive verification of the direct broadcast satellite television, which comprises the following steps:
the set top box is used for establishing a direct broadcast satellite signal interaction channel between the set top box and the LNB when the LNB verifies that the set top box is legal;
the LNB is used for acquiring the ID data of the set-top box after the set-top box and the direct broadcast satellite tuner LNB form signal connection, and carrying out validity verification on the set-top box based on the ID of the set-top box; and when the set-top box is verified to be legal, a direct broadcast satellite signal channel is established between the set-top box and the LNB.
The set top box is also used for acquiring the ID data of the LNB and verifying the legality of the LNB based on the ID of the LNB; and when the LNB is verified to be legal, establishing a direct broadcast satellite signal interaction channel between the set-top box and the LNB.
After the scheme is adopted, the beneficial effects of the invention comprise: the method can realize the validity verification of the set-top box based on the LNB, can establish a signal channel only when the set-top box authorized by the radio and television administration department is verified, and can realize the reception of the whole direct broadcast satellite television signal based on the signal channel. In addition, the set top box and the LNB can realize mutual authentication, so that the set top box and the LNB can be used as a receiving function of a live action television signal when the devices which are mutually authenticated are legal devices. In the implementation process of the invention, the validity verification is realized through the threshold time or the threshold times, and the multiple handshake process of the whole verification process is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for performing live broadcast satellite television interactive verification based on a set-top box in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a system for interactive verification of direct broadcast satellite television in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a set-top box structure in an embodiment of the invention;
fig. 4 is a schematic structural diagram of an acquisition module in the set-top box in the embodiment of the present invention;
fig. 5 is a flowchart of a method for performing live broadcast satellite television interactive authentication based on LNBs in an embodiment of the present invention;
FIG. 6 is a schematic diagram of an LNB architecture in an embodiment of the invention;
FIG. 7 is a block diagram of an embodiment of an acquisition module;
FIG. 8 is a schematic circuit diagram of a system for live satellite television interactive verification in an embodiment of the invention;
FIG. 9 is a schematic diagram of the principle of interactive control between an LNB and a set top box based on a baseband transmission mode in the embodiment of the present invention
Fig. 10 is a flowchart of a method for interactive authentication between an LNB and a set-top box in an embodiment 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.
According to the method for carrying out live broadcast satellite television interactive verification based on the set top box, disclosed by the embodiment of the invention, after the set top box and a live broadcast satellite tuner LNB form signal connection, the set top box acquires ID data of the LNB and carries out validity verification on the LNB based on the ID of the LNB; and when the set-top box verifies that the LNB is legal, establishing a direct broadcast satellite signal interaction channel between the set-top box and the LNB.
It should be noted that the verification process of the set-top box may be completed in an initial installation process of the live broadcast satellite television receiving system, for example, when a worker installs an LNB at home or configures the set-top box, an installation test is first performed, and after the installation test is completed, the validity authentication of the LNB may be realized based on the set-top box, so that it is ensured that the whole live broadcast satellite television receiving system can complete the reception of a live broadcast satellite television signal based on the receiving system.
It should be noted that the verification process performed by the set top box may be that when a normal television is turned on, for example, the set top box is turned on, the receiving of the live broadcast satellite television signal is realized through the connected LNB, and the verification process of the LNB needs to be performed after the television system is turned on, so that it is ensured that the whole live broadcast satellite television receiving system can complete the receiving of the live broadcast satellite television signal based on the receiving system.
It should be noted that the verification process performed by the set-top box may be a verification process in which the set-top box is triggered to verify the LNB based on a time threshold in the normal television playing process, for example, the verification is performed after ten minutes of normal television playing, or the verification is performed by the receiving system once every hour, and the like.
In a further implementation process, when the set top box acquires the ID data of the LNB, the LNB may also acquire the ID data of the set top box, and the ID data of the set top box is used for the LNB to verify the validity of the set top box. After the legality is verified, a direct broadcast satellite signal interaction channel is established between the set top box and the LNB, and the authentication mode ensures that authentication equipment is legal, so that the function of legally receiving a direct broadcast satellite television signal by a receiving system is realized.
According to the method for realizing the interactive verification of the live broadcast satellite television based on the LNB, disclosed by the embodiment of the invention, after the set top box and the live broadcast satellite tuner LNB form signal connection, the LNB acquires the ID data of the set top box and carries out validity verification on the set top box based on the ID of the set top box; and when the LNB verifies that the set-top box is legal, a direct broadcast satellite signal channel is established between the set-top box and the LNB.
It should be noted that the verification process of the LNB may be completed in an initial installation process of the live broadcast satellite television receiving system, for example, when a worker installs the LNB at home or configures a set-top box, an installation test is first performed, and after the installation test is completed, the validity authentication of the LNB may be implemented based on the set-top box, thereby ensuring that the whole live broadcast satellite television receiving system can complete the reception of the live broadcast satellite television signal based on the receiving system.
It should be noted that the verification process performed by the LNB may be that when the normal television is turned on, for example, the set top box is turned on, the receiving of the live broadcast satellite television signal is realized through the connected LNB, and the verification process of the LNB needs to be performed after the television system is turned on, so that it is ensured that the whole live broadcast satellite television receiving system can complete the receiving of the live broadcast satellite television signal based on the receiving system.
In a further implementation process, when the LNB acquires the ID data of the set top box and the set top box can also acquire the ID data of the LNB, the ID data of the LNB is used for the set top box to verify the validity of the LNB. After the legality is verified, a direct broadcast satellite signal interaction channel is established between the set top box and the LNB, and the authentication mode ensures that authentication equipment is legal, so that the function of legally receiving a direct broadcast satellite television signal by a receiving system is realized.
Fig. 1 shows a flowchart of a method for performing live broadcast satellite television interactive verification based on a set-top box in an embodiment of the present invention, including the following steps:
s101, after the set top box and a direct broadcast satellite tuner LNB form signal connection, the set top box acquires ID data of the LNB;
in a specific implementation process, the set top box sends an ID query command to the LNB and receives ID data of the LNB fed back to the set top box by the LNB.
In a specific implementation process, the set top box can send an ID query command to the LNB based on a baseband transmission mode; or an ID query command is sent to the LNB based on the manner of subcarrier band transmission.
In a specific implementation process, the set top box enters timing waiting, and judges whether to enter the validity verification of the LNB or not based on threshold time and/or overtime threshold times.
S102, performing validity verification on the LNB based on the ID of the LNB, entering S103 if the LNB is verified to be valid, otherwise ending the process;
s103, when the set top box verifies that the LNB is legal, a direct broadcast satellite signal interaction channel is established between the set top box and the LNB;
and (6) ending.
The invention can realize the validity verification of the LNB based on the set-top box, and can establish a signal channel only when the LNB authorized by the radio and television administration department is verified, and can realize the reception of the whole direct broadcast satellite television signal based on the signal channel. In addition, the set top box and the LNB can realize mutual authentication, so that the receiving function of the direct broadcast satellite television signal can be realized only when the mutual authentication equipment is legal equipment. In the implementation process of the invention, the validity verification is realized through the threshold time or the threshold times, and the multiple handshake process of the whole verification process is ensured.
Specifically, fig. 2 shows a schematic structural diagram of a system for interactive verification of direct broadcast satellite television in an embodiment of the present invention, where the system includes:
the set top box is used for acquiring the ID data of the LNB after the set top box and the direct broadcast satellite tuner LNB form signal connection, and carrying out validity verification on the LNB based on the ID of the LNB; when the LNB is verified to be legal, a direct broadcast satellite signal interaction channel is established between the set-top box and the LNB;
and the LNB is used for establishing a direct broadcast satellite signal interaction channel between the set top box and the LNB when the set top box verifies that the LNB is legal.
In a specific implementation process, the LNB is further used for obtaining the ID data of the set top box, verifying the validity of the set top box based on the ID of the set top box, and establishing a direct broadcast satellite signal interaction channel between the set top box and the LNB after the validity of the set top box is verified.
In a specific implementation process, the set top box sends ID data of the set top box to the LNB, the ID data of the set top box is used for the LNB to verify the validity of the set top box, and the set top box sends the ID data of the set top box to the LNB based on an ID query command; or after receiving the ID inquiry request initiated by the LNB, the set top box sends the ID data of the set top box to the LNB.
Based on the system architecture of fig. 2, it can also be implemented as follows:
the set top box is used for establishing a direct broadcast satellite signal interaction channel between the set top box and the LNB when the LNB verifies that the set top box is legal; the LNB is used for acquiring the ID data of the set-top box after the set-top box and the direct broadcast satellite tuner LNB form signal connection, and carrying out validity verification on the set-top box based on the ID of the set-top box; and when the set-top box is verified to be legal, a direct broadcast satellite signal channel is established between the set-top box and the LNB. In a specific implementation process, the set top box is further used for obtaining the ID data of the LNB and verifying the validity of the LNB based on the ID of the LNB; and when the LNB is verified to be legal, establishing a direct broadcast satellite signal interaction channel between the set-top box and the LNB.
Correspondingly, fig. 3 shows a schematic structural diagram of a set-top box in the embodiment of the present invention, including:
the acquisition module is used for acquiring the ID data of the LNB after the signal connection is formed between the set top box and the direct broadcast satellite tuner LNB;
the verification module is used for verifying the validity of the LNB based on the ID of the LNB;
and the interaction control module is used for establishing a direct broadcast satellite signal interaction channel between the set top box and the LNB when the set top box verifies that the LNB is legal.
Specifically, fig. 4 shows a schematic structural diagram of an obtaining module in the set-top box according to the embodiment of the present invention, where the obtaining module includes:
a sending unit, configured to send an ID query command to the LNB;
and the receiving unit is used for receiving the ID data of the LNB fed back to the set top box by the LNB.
In a specific implementation process, the set top box sends an ID query command to the LNB based on a baseband transmission mode; or an ID query command is sent to the LNB based on the manner of subcarrier band transmission.
The acquisition module further comprises:
and the timing threshold unit is used for entering timing waiting after the sending unit sends the ID inquiry command and judging whether to enter the validity verification of the LNB or not based on the threshold time and/or the overtime threshold times.
Correspondingly, the set-top box further comprises:
and the sending module is used for sending the ID data of the set top box to the LNB, and the ID data of the set top box is used for verifying the validity of the set top box by the LNB.
Correspondingly, fig. 5 shows a flowchart of a method for performing live broadcast satellite television interactive authentication based on LNB in the embodiment of the present invention, where the steps are as follows:
s501, after the set top box and a direct broadcast satellite tuner LNB form signal connection, the LNB acquires ID data of the set top box;
in a specific implementation process, the LNB may send an ID query request to the set-top box, and receive ID data of the set-top box fed back to the LNB by the set-top box based on the ID query request; or the LNB may receive the set-top box ID data directly transmitted by the set-top box.
In a specific implementation process, the set top box may obtain the ID data of the set top box by the LNB based on a baseband transmission mode, or obtain the ID data of the set top box by the LNB based on a subcarrier band transmission mode.
In a specific implementation process, the set top box enters timing waiting, and judges whether to enter the validity verification of the LNB or not based on threshold time and/or overtime threshold times.
S502, verifying the validity of the set-top box based on the ID of the set-top box, entering S503 if the set-top box is verified to be valid, otherwise ending the process;
s503, when the LNB verifies that the set-top box is legal, a direct broadcast satellite signal interaction channel is established between the set-top box and the LNB;
in a specific implementation process, the LNB may send the ID data of the LNB to the set top box, where the ID data of the LNB is used for the set top box to verify the validity of the LNB.
In a specific implementation process, the LNB may further receive an ID query command sent by the set-top box, and the LNB feeds back ID data of the LNB to the set-top box based on the ID query command.
The method can realize the validity verification of the set top box based on the LNB, only the set top box which belongs to the radio and television authorization is verified to establish a signal channel, and the whole direct broadcast satellite television signal can be received based on the signal channel. In addition, the set top box and the LNB can realize mutual authentication, so that the set top box and the LNB can be used as a receiving function of a live action television signal when the devices which are mutually authenticated are legal devices.
And (6) ending. Accordingly, fig. 6 shows a schematic structural diagram of an LNB in the embodiment of the present invention, where the LNB includes:
the acquisition module is used for acquiring the ID data of the set top box after the set top box and the direct broadcast satellite tuner LNB form signal connection;
the verification module is used for verifying the validity of the set top box based on the ID of the set top box;
and the interaction control module is used for establishing a direct broadcast satellite signal channel between the set top box and the LNB when the LNB verifies that the set top box is legal.
Specifically, fig. 7 shows a schematic structural diagram of an acquisition module in the LNB, where the acquisition module includes:
the receiving unit is used for receiving the ID data of the set top box sent by the set top box;
and the sending unit is used for sending the ID inquiry request to the set top box.
In a specific implementation process, the LNB acquires the ID data of the set top box based on a baseband transmission mode, or acquires the ID data of the set top box based on a subcarrier frequency band transmission mode.
In a specific implementation process, the LNB module further includes:
and the sending module is used for sending the ID data of the LNB to the set top box, and the ID data of the LNB is used for verifying the validity of the LNB by the set top box. Further, the sending module is further configured to receive an ID query command sent by the set top box, and feed back ID data of the LNB to the set top box based on the ID query command.
Specifically, fig. 8 shows a schematic circuit diagram of a system for interactive authentication of direct broadcast satellite television in an embodiment of the present invention, where the system includes an LNB portion and a set-top box portion, and the LNB and the set-top box are connected through only one transmission cable 6, where:
the LNB part comprises: the system comprises an antenna 1, an antenna 2, a GNSS positioning receiving unit, an LNB satellite television receiving unit, an LNB interaction control unit, a radio frequency combiner unit and a PMU power management unit, wherein the PMU power management unit supplies power to the whole LNB tuner;
the set-top box part mainly comprises: the system comprises a radio frequency shunt unit, a direct broadcast satellite signal processing unit, a GNSS positioning signal processing unit, a set-top box interaction control unit, a PMU power management unit and an MCU main control circuit unit, wherein the PMU power management unit can supply power for an LNB tuner and a set-top box of the set-top box;
the transmission cable 6 can transmit satellite television signals, GNSS positioning signals, interactive control signals between the LNB and the set top box and direct current power supply signals;
the GNSS radio frequency signal and the LNB intermediate frequency signal are combined through a radio frequency combiner 5;
GNSS includes but is not limited to BDS, GPS, GLONASS, the working mode includes single mode, dual mode or multi mode;
the GNSS positioning receiving unit 1 of the outdoor LNB part completes the amplification and filtering of the positioning signal;
the PMU power management unit 4 of the outdoor LNB part provides power supply for each unit of the LNB;
a radio frequency shunt unit 7 of the set-top box part completes the shunt of the GNSS radio frequency signal, the LNB intermediate frequency signal and the interactive control signal and feeds the direct current signal required by the LNB into the transmission cable;
the set-top box direct broadcast satellite signal processing unit 8 completes demodulation and signal processing of satellite television signals;
the set-top box positioning signal processing unit 9 completes signal processing and information processing of the GNSS positioning signal to obtain positioning information data;
the set-top box interactive control unit 10 completes information communication and control with the interactive control unit 3 of the outdoor LNB part;
the set-top box power management unit 11 provides power supply for each unit of the whole set-top box and provides power supply for the outdoor LNB;
the set-top box MCU main control circuit unit 12 completes the control processing of the whole set-top box and is connected with external equipment such as a television and the like through an external interface;
the set-top box television interface outputs audio signals and video signals, which are not limited in signal form, may be analog AV signals, high definition HDMI signals, YPbPr, VGA and the like;
the set top box external control interface and other circuit interfaces comprise a serial port, a USB port, a network port, a set top box panel control interface, a smart card interface and the like;
the antenna 1 and the antenna 2 are respectively and independently designed, wherein one path of the antenna realizes the receiving of direct broadcast satellite signals, and the other path of the antenna realizes the receiving and sending of GNSS signals.
Specifically, fig. 9 shows a schematic diagram of a principle of interactive control between an LNB and a set top box based on a baseband transmission mode in the embodiment of the present invention, where:
the uplink is a link for the set top box to send data to the LNB, and the downlink is a link for the LNB to send data to the set top box. The set-top box sends an ID (identity) query command to the LNB, and the command data adopts a pulse FM0 coding mode; subsequently, after receiving the query command, the LNB transmits the ID data of the LNB (the data is unique, the data is written by a manufacturer who is authorized by a radio and television department when the LNB leaves a factory) to the set-top box through a downlink, and the set-top box identifies whether the ID is a legal ID, thereby completing the verification. The LNB ID data is also encoded using FM 0.
In a specific implementation process, when the set top box sends a query command to a user, the ID data of the set top box are simultaneously sent to the LNB, the LNB verifies the validity of the set top box based on the ID of the set top box, and when the validity is verified, the ID data of the LNB are sent to the set top box.
Specifically, interactive control between the LNB and the set-top box can be realized through a subcarrier frequency band transmission mode, and different from the lacing transmission mode, a subcarrier modulator needs to be added in the set-top box, and at this time, the query command sent by the set-top box to the LNB is frequency band data; and after receiving the query command, the LNB modulates the ID data on a subcarrier and sends the ID data to the set-top box, and the set-top box demodulates the ID data and identifies whether the ID is a legal ID or not, so that verification is completed, and the whole data coding mode can still adopt FM0 coding.
Specifically, fig. 10 shows a flowchart of a method for performing interactive authentication between an LNB and a set top box in the embodiment of the present invention, where the method includes the following steps:
starting;
when the LNB and the set-top box finish initial installation, or the set-top box starts receiving signals, or the television enters a receiving state, and re-enters the interactive verification mode after a certain time threshold value, namely the LNB and the set-top box perform an interactive verification process.
S1001, the set top box sends an ID query command to the LNB;
the ID query command also sends the set-top box's own ID data to the LNB.
S1002, the LNB receives the query command;
s1003, the set-top box verifies whether the set-top box ID is legal, if so, the step enters S1004, and if not, the step enters S1005;
s1004, the LNB sends ID data to the set top box, and the ID data comprises the ID of the LNB;
s1005, the LNB sends an inquiry error command to the set-top box, namely the set-top box can not obtain the ID data of the LNB finally, the final process can be finished, and a direct broadcast satellite television signal channel can not be established between the LNB and the set-top box;
s1006, when the set top box initiates the query to the LNB, the set top box waits for timing;
s1007, when the set-top box does not receive the information fed back by the LNB, the set-top box always judges whether the time is overtime, if not, the step goes to S1008, and if the time is overtime, the step goes to S1013;
it should be noted that the judgment of the timeout time may be to implement a preset time threshold, where the time threshold may be a unit of time, i.e., millisecond, second, minute, hour, and the like, and the time threshold is calculated by a specific value, such as 1 second, 0.5 second, and the like, and arbitrarily takes a value according to the time unit, so as to meet the condition setting.
S1008, the set top box receives data fed back by the LNB, wherein the data can be ID information fed back by the LNB or can be an error inquiry command;
s1009, the set-top box judges whether the feedback data is ID data, if the feedback data is ID data, the step enters S1010, and if not, the step is finished;
s1010, the set top box judges whether the ID of the LNB is legal, if so, the step enters S1011, otherwise, the step enters 1012;
s1011, if the set top box judges that the LNB is legal, a direct broadcast satellite television signal channel can be established between the set top box and the LNB, and a direct broadcast satellite television signal can be received through an antenna of the LNB based on the direct broadcast satellite television signal channel;
s1012, the set top box judges that the LNB is illegal, and a direct broadcast satellite television signal channel cannot be established between the set top box and the LNB, so that an illegal receiving system is prevented from receiving direct broadcast satellite television signals;
s1013, the set top box records the overtime times;
s1014, the set-top box judges whether the overtime frequency exceeds 3, if the overtime frequency exceeds 3, the process is ended, and if the overtime frequency does not exceed 3, the process enters 1001 again;
in the specific implementation process, the threshold number of times may be any value, and is not limited to 3 times, for example, any value above the value 1 may satisfy the purpose set by this embodiment, including: 1, 2, 3, etc.
And (6) ending.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), FLASH, magnetic or optical disks, and the like.
The method, the LNB, and the system for interactive verification of a live broadcast satellite television provided by the embodiment of the present invention are described in detail above, a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (9)

1. A method for realizing direct broadcast satellite television interactive verification based on LNB is characterized by comprising the following steps:
after the set top box and a direct broadcast satellite tuner LNB form signal connection, the LNB acquires ID data of the set top box and carries out validity verification on the set top box based on the ID of the set top box;
when the LNB verifies that the set-top box is legal, a direct broadcast satellite signal channel is established between the set-top box and the LNB;
before the step of establishing a direct broadcast satellite signal channel between the set top box and the LNB, the method further comprises the following steps:
and the LNB sends the ID data of the LNB to the set top box, and the ID data of the LNB is used for verifying the validity of the LNB by the set top box.
2. The method for implementing live satellite television interactive verification based on LNB as claimed in claim 1, wherein the LNB obtaining ID data of the set-top box comprises:
the LNB sends an ID query request to the set top box and receives ID data of the set top box fed back to the LNB by the set top box based on the ID query request; or
And receiving the ID data of the set top box sent by the set top box.
3. The method for implementing interactive verification of direct broadcast satellite television based on LNB as claimed in claim 2, wherein said LNB obtains ID data of set-top box based on baseband transmission or obtains ID data of set-top box based on sub-carrier band transmission.
4. The method for implementing live satellite television interactive verification based on LNBs as claimed in claim 1, wherein the LNB sending the LNB ID data to the set top box includes:
and the LNB receives the ID query command sent by the set top box, and the LNB feeds back the ID data of the LNB to the set top box based on the ID query command.
5. An LNB, comprising:
the acquisition module is used for acquiring the ID data of the set top box after the set top box and the direct broadcast satellite tuner LNB form signal connection;
the verification module is used for verifying the validity of the set top box based on the ID of the set top box;
the interactive control module is used for establishing a direct broadcast satellite signal channel between the set-top box and the LNB when the LNB verifies that the set-top box is legal;
the LNB module further includes:
and the sending module is used for sending the ID data of the LNB to the set top box, and the ID data of the LNB is used for verifying the validity of the LNB by the set top box.
6. The LNB of claim 5, wherein the acquisition module comprises:
the receiving unit is used for receiving the ID data of the set top box sent by the set top box;
and the sending unit is used for sending the ID inquiry request to the set top box.
7. The LNB of claim 6, wherein the LNB obtains the set top box ID data based on baseband transmission or based on sub-carrier band transmission.
8. The LNB of claim 5, wherein the sending module is further configured to receive an ID query command sent by the set top box, and to feed back ID data of the LNB to the set top box based on the ID query command.
9. A system for interactive verification of live satellite television, comprising:
the set top box is used for establishing a direct broadcast satellite signal interaction channel between the set top box and the LNB when the LNB verifies that the set top box is legal;
the LNB is used for acquiring the ID data of the set-top box after the set-top box and the direct broadcast satellite tuner LNB form signal connection, and carrying out validity verification on the set-top box based on the ID of the set-top box; when the set-top box is verified to be legal, a direct broadcast satellite signal channel is established between the set-top box and the LNB;
the set top box is also used for acquiring the ID data of the LNB and verifying the legality of the LNB based on the ID of the LNB; and when the LNB is verified to be legal, establishing a direct broadcast satellite signal interaction channel between the set-top box and the LNB.
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