Automatic switching system of television transmitter

Abstract

The utility model discloses an automatic switching system of a television transmitter, and relates to the technical field of radio and television. The television transmitter automatic switching system comprises at least two transmitters, a system controller, a coaxial module, a decision module and an antenna feed tube, wherein the transmitter is respectively connected with the coaxial module and the decision module; the coaxial module is also connected with the decision module, the system controller and the antenna feed tube; the antenna feed tube is also connected with the decision module; the decision module is also connected with the system controller; and the system controller is used for sending the transmitter switching instruction to the coaxial module, so that the coaxial module switches the transmitter connected with the antenna feed tube based on the transmitter switching instruction. According to the embodiment of the utility model, automatic switching is realized according to the first signal of the terrestrial digital radio frequency signal, the limitation that the existing system can only respond to power failure for switching is effectively solved, the guarantee capability of a transmitter for safe broadcasting is improved, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of broadcast television technology especially relates to a television transmitter automatic switching system. BACKGROUND

[0002] With the development of digital broadcast television programs, users have higher and higher requirements for the stability of broadcast television programs. In order to ensure the stable broadcast of digital broadcast television programs, the automatic switching function of the transmitter is crucial for the transmitting station.

[0003] The existing transmission system mainly deals with the detection of abnormal transmitter power in terms of automatic switching function. However, for image abnormalities caused by the modulation module, manual judgment and manual switching operation are still needed, which undoubtedly greatly reduces the efficiency of emergency disposal. Under the background of increasingly strict requirements of broadcast television, the existing transmitter automatic switching detection mechanism still lacks satisfactory implementation of automatic switching function for broadcast signal monitoring. Therefore, how to realize intelligent decision-making of automatic switching under abnormal signal conditions has become a technical problem to be solved at present. UTILITY MODEL CONTENT

[0004] The utility model provides a broadcast frequency channel switcher to solve the problem of intelligent decision-making of automatic switching under abnormal signal conditions in the prior art.

[0005] According to an aspect of the utility model, a television transmitter automatic switching system is provided, wherein the television transmitter automatic switching system comprises at least two transmitters, a system controller, a coaxial module, a decision module and an antenna feed pipe.

[0006] The transmitters are connected with the coaxial module and the decision module respectively, and are used to transmit terrestrial digital radio frequency signals to the coaxial module and the decision module.

[0007] The coaxial module is also connected with the decision module, the system controller and the antenna feed pipe, and is used to generate a connection signal and send it to the decision module, and receive the transmitter switching instruction sent by the system controller to switch the transmitter connected with the antenna feed pipe.

[0008] The antenna feed pipe is also connected with the decision module, and is used to transmit the terrestrial digital radio frequency signal of the connected transmitter to the decision module as a first signal.

[0009] The decision module is also connected with the system controller, and is used to receive the connection signal, the terrestrial digital radio frequency signal and the first signal to determine the transmitter switching instruction, and send the transmitter switching instruction to the system controller.

[0010] The system controller is used to send the transmitter switching command to the coaxial module, so that the coaxial module switches the transmitter connected to the antenna feed tube based on the transmitter switching command.

[0011] In one embodiment, the system controller is also connected to the transmitter to acquire the operating status of the transmitter, generate control commands based on the operating status, and send them to the transmitter so that the transmitter adjusts the operating status based on the control commands.

[0012] In one embodiment, the decision module includes: a comparison unit and a decision unit;

[0013] The comparison unit is connected to the transmitter, the antenna feed tube and the decision unit, and is used to receive the ground digital radio frequency signal and the first signal, generate a comparison result based on the abnormality of the ground digital radio frequency signal and the first signal, and send the comparison result to the decision unit.

[0014] The decision unit is also connected to the coaxial module and the system controller, and is used to determine the decision result based on the comparison result, and generate a transmitter switching command based on the decision result and the connection signal.

[0015] In one embodiment, the comparison unit includes: a receiving unit and a comparison unit;

[0016] The receiving unit is connected to the transmitter, the antenna feed tube, and the comparison unit, and is used to receive the ground digital radio frequency signal and the first signal;

[0017] The comparison unit is also connected to the decision unit and is used to obtain a comparison result based on the ground digital radio frequency signal and the first signal.

[0018] In one embodiment, the receiving unit includes: a terrestrial digital radio frequency decoding unit and a video decoding unit;

[0019] The ground digital radio frequency decoding unit is connected to the transmitter, the antenna feed tube, and the video decoding unit, and is used to receive the ground digital radio frequency signal and the first signal, convert the ground digital radio frequency signal and the first signal into a data stream format, and send the ground digital radio frequency signal and the first signal in the data stream format to the video decoding unit;

[0020] The video decoding unit is also connected to the decision unit and is used to convert the ground digital radio frequency signal in data stream format and the first signal into an image format.

[0021] In one embodiment, the transmitter and the decision module, the transmitter and the coaxial module, the antenna feed tube and the coaxial module, and the antenna feed tube and the decision module are connected by radio frequency signal lines;

[0022] The system controller is connected to the coaxial module, the system controller to the transmitter, and the system controller to the decision module via data control lines.

[0023] In one embodiment, the coaxial module generates a connection signal while simultaneously being connected to both the transmitter and the antenna feed tube.

[0024] In one embodiment, the transmitter switching instructions generated by the decision module include hold and reversal.

[0025] In one embodiment, the comparison results generated by the comparison unit correspond one-to-one with the decision results generated by the decision unit.

[0026] In one embodiment, the transmitter transmits the terrestrial digital radio frequency signal via an exciter associated with the transmitter.

[0027] The technical solution of this utility model embodiment involves a transmitter transmitting a terrestrial digital radio frequency signal to a coaxial module and a decision module. The coaxial module generates a connection signal and sends it to the decision module. The antenna feed tube sends the terrestrial digital radio frequency signal transmitted by the connected transmitter as a first signal to the decision module. The decision module 4 receives the connection signal, the terrestrial digital radio frequency signal, and the first signal to determine a transmitter switching command and sends the transmitter switching command to the system controller. The system controller sends the transmitter switching command to the coaxial module so that the coaxial module switches the transmitter connected to the antenna feed tube based on the transmitter switching command. This achieves automatic switching according to the first signal of the terrestrial digital radio frequency signal, effectively solving the limitation of existing systems that can only switch in response to power failures, improving the transmitter's ability to ensure safe broadcasting, and enhancing the user experience.

[0028] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of an automatic reversing system for a television transmitter according to Embodiment 1 of this utility model;

[0031] Figure 2 This is a schematic diagram of another automatic reversing system for a television transmitter provided according to Embodiment 1 of this utility model;

[0032] Figure 3 This is a schematic diagram of an automatic reversing system for a television transmitter according to Embodiment 2 of this utility model;

[0033] Figure 4 This is a schematic diagram of an automatic reversing system for a television transmitter according to Embodiment 3 of this utility model;

[0034] Figure 5 This is a schematic diagram of an automatic reversing system for a television transmitter according to Embodiment 4 of this utility model;

[0035] Figure 6 A schematic diagram of the signal flow of an automatic reversing system for a television transmitter, provided according to Embodiment 4 of this utility model;

[0036] Figure 7 A signal sampling schematic diagram according to Embodiment 4 of this utility model;

[0037] Figure 8 A schematic diagram of a decision module according to Embodiment 4 of this utility model;

[0038] Figure 9 A schematic diagram of the signal flow of another automatic switching system for a television transmitter, provided in Embodiment 4 of this utility model. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Example 1

[0042] Figure 1 This is a structural schematic diagram of an automatic reversing system for a television transmitter according to Embodiment 1 of this utility model. This embodiment is applicable to situations where automatic reversing of a television transmitter is required, such as... Figure 1 As shown, the automatic switching system for the television transmitter includes: at least two transmitters 10, a system controller 20, a coaxial module 30, a decision module 40, and an antenna feed tube 50;

[0043] The transmitter 10 is connected to the coaxial module 30 and the decision module 40 respectively, and is used to transmit ground digital radio frequency signals to the coaxial module 30 and the decision module 40.

[0044] The coaxial module 30 is also connected to the decision module 40, the system controller 20 and the antenna feed tube 50, and is used to generate connection signals and send them to the decision module 40, and to receive transmitter switching commands sent by the system controller 20 to switch the transmitter 10 connected to the antenna feed tube 50;

[0045] The antenna feed tube 50 is also connected to the decision module 40, and is used to send the ground digital radio frequency signal transmitted by the connected transmitter 10 as the first signal to the decision module 40;

[0046] The decision module 40 is also connected to the system controller 50 and is used to receive the connection signal, the ground digital radio frequency signal and the first signal to determine the transmitter switching command, and send the transmitter switching command to the system controller 20;

[0047] The system controller 20 is used to send a transmitter switching command to the coaxial module 30, so that the coaxial module 30 switches the transmitter 10 connected to the antenna feed tube 50 based on the transmitter switching command.

[0048] In this embodiment, the transmitter 10 is connected to the coaxial module 30 and the decision module 40 respectively. The coaxial module 30 is also connected to the decision module 40, the system controller 20 and the antenna feed tube 50. The decision module 40 is also connected to the system controller 50, and the antenna feed tube 50 is also connected to the decision module 40. The transmitter 10, the system controller 20, the coaxial module 30, the decision module 40 and the antenna feed tube 50 can be wired to ensure the transmission of information between the transmitter 10, the system controller 20, the coaxial module 30, the decision module 40 and the antenna feed tube 50.

[0049] In one embodiment, the transmitter and the decision module, the transmitter and the coaxial module, the antenna feed tube and the coaxial module, and the antenna feed tube and the decision module can be connected by radio frequency signal lines, and the system controller and the coaxial module, the system controller and the transmitter, and the system controller and the decision module can be connected by data control lines, such as data lines or control lines.

[0050] It should be noted that transmitter 10 can be used to process and amplify television program signals, and then transmit them in the form of radio frequency signals, i.e., transmit terrestrial digital radio frequency signals. These terrestrial digital radio frequency signals can be radio frequency signals, enabling viewers to receive television programs through their television sets. The number of transmitters 10 can be at least two, including a main transmitter and a backup transmitter. In one embodiment, transmitter 10 transmits terrestrial digital radio frequency signals via an exciter associated with the transmitter.

[0051] The system controller 20 can coordinate the operation of each module and make decisions based on transmitter switching commands. The system controller 20 can communicate with the coaxial module 30 to issue transmitter switching commands so that the coaxial module 30 can perform automatic switching operations.

[0052] The coaxial module 30 is a device that enables the switching of connections between at least two transmitters 10 and the antenna feed tube 50. Generally, the coaxial module 30 has four connectors, which can be connected to the antenna and two transmitters 10 sequentially in a clockwise direction. The internal mechanism of the coaxial module 30 can be driven by a motor to achieve a one-to-one connection between the transmitter 10 and the antenna feed tube 50. The connection signal refers to the indication signal used to indicate the connection between the transmitter 10 and the antenna feed tube 50. In actual operation, the connection signal can be an interlocking signal. In one embodiment, the coaxial module 30 generates the connection signal when it is simultaneously connected to both the transmitter 20 and the antenna feed tube 50.

[0053] The decision module 40 can issue commands according to certain logical operation requirements to control the coordinated operation of the input, operation, and output parts. The decision module 40 may include a microcontroller unit (MCU), a single-chip microcomputer, a central processing unit (CPU), a calculator, and a server, or other logic operation devices with data processing and / or program execution capabilities. The decision module 40 can generate transmitter switching commands based on the ground digital radio frequency signals transmitted by the transmitter 10 and the ground digital radio frequency signals fed back by the antenna feed tube 50. The transmitter switching command refers to the indication information used to control the switching of the transmitter 10. In actual operation, the transmitter switching command can be used to control the rotation of the coaxial module 30 to achieve automatic switching of the transmitter 10. In one embodiment, the transmitter switching command generated by the decision module 40 includes hold and reverse commands; that is, the transmitter switching command can control the operation of the coaxial module 30. In one embodiment, the transmitter switching command can be an interlocking signal.

[0054] Antenna feed tube 50 is a special transmission line used to transmit signals. It is usually used to connect the antenna and the transmitter 10. Antenna feed tube 50 can transmit the ground digital radio frequency signal transmitted by the transmitter 10 to the antenna. The antenna can transmit the received ground digital radio frequency signal to the receiver for broadcast. At the same time, antenna feed tube 50 can also send the ground digital radio frequency signal transmitted by the transmitter 10 as the first signal to the decision module 40 so that the decision module 40 can generate a transmitter switching command.

[0055] In one embodiment, each transmitter 10 can transmit a terrestrial digital radio frequency signal. The decision module 40 can receive the terrestrial digital radio frequency signal transmitted by the transmitter 10 and the first signal transmitted by the antenna feed tube 50, determine the image corresponding to the terrestrial digital radio frequency signal and the first signal, determine the abnormal situation of the image, generate a transmitter switching command according to the abnormal situation, and send the transmitter switching command to the system controller 20. The system controller 20 can send the transmitter switching command to the coaxial module 30 so that the coaxial module 30 rotates its position based on the transmitter switching command and switches the transmitter 10 connected to the antenna feed tube 50. In actual operation, the abnormal situation of the image can be determined by a preset judgment logic. For example, taking two transmitters 10 as an example, when the image corresponding to the first signal is normal, regardless of whether the image corresponding to the ground digital radio frequency signal transmitted by the two transmitters 10 is normal, the generated transmitter switching command is to hold; when the image corresponding to the first signal is abnormal, if the image corresponding to the ground digital radio frequency signal transmitted by the two transmitters 10 is normal, the generated transmitter switching command is to switch off; when the image corresponding to the first signal is abnormal, and the image corresponding to the ground digital radio frequency signal transmitted by the two transmitters 10 is also abnormal, it can be considered that the front-end signal is abnormal, therefore, the generated transmitter switching command is to hold.

[0056] In this embodiment of the invention, a transmitter transmits a terrestrial digital radio frequency signal to a coaxial module and a decision module. The coaxial module generates a connection signal and sends it to the decision module. The antenna feed tube sends the terrestrial digital radio frequency signal transmitted by the connected transmitter as a first signal to the decision module. The decision module 4 receives the connection signal, the terrestrial digital radio frequency signal, and the first signal to determine a transmitter switching command and sends the transmitter switching command to the system controller. The system controller sends the transmitter switching command to the coaxial module so that the coaxial module switches the transmitter connected to the antenna feed tube based on the transmitter switching command. This achieves automatic switching according to the first signal of the terrestrial digital radio frequency signal, effectively solving the limitation of existing systems that can only switch over in response to power failures, improving the transmitter's ability to ensure safe broadcasting, and enhancing the user experience.

[0057] In one embodiment, Figure 2 This is a structural schematic diagram of another automatic reversing system for a television transmitter provided according to Embodiment 1 of this utility model, as shown below. Figure 2 As shown, the system controller 20 is also connected to the transmitter 10 to obtain the operating status of the transmitter 10, generate control commands based on the operating status and send them to the transmitter 10 so that the transmitter 10 can adjust its operating status based on the control commands.

[0058] The operating status can include running and shut down. Control commands refer to the instructions that control the transmitter 10 to change its operating status.

[0059] In this embodiment, the system controller 20 can communicate with the transmitter 10 and read its operating status. During automatic reversal control, the transmitter 10 must first be in a shut-off state to allow the coaxial module 30 to rotate. At this time, when the transmitter 10 is in a running state, the system controller 20 can generate a control command to shut down the transmitter 10, thus adjusting its operating status to shut down. After the coaxial module 30 has finished rotating, a control command to turn on the transmitter 10 (i.e., the fault-free transmitter) that needs to be connected to the antenna feed tube 50 can be sent, completing the automatic reversal of the transmitter 10.

[0060] Example 2

[0061] Figure 3 This is a schematic diagram of an automatic reversing system for a television transmitter according to Embodiment 2 of the present invention. This embodiment is a further explanation of the structure of an automatic reversing system for a television transmitter based on the above embodiment. Figure 3 As shown, the decision module 40 includes a comparison unit 41 and a decision unit 42.

[0062] The comparison unit 41 is connected to the transmitter 10, the antenna feed tube 50 and the decision unit 42. It is used to receive the ground digital radio frequency signal and the first signal, generate the comparison result based on the abnormal situation of the ground digital radio frequency signal and the first signal, and send the comparison result to the decision unit 42.

[0063] The decision unit 42 is also connected to the coaxial module 30 and the system controller 20 to determine the decision result based on the comparison result and generate a transmitter switching command based on the decision result and the connection signal.

[0064] The comparison result refers to the result generated by comparing the ground digital radio frequency signal and the first signal. The comparison result can include normal and abnormal. The decision result refers to the result generated based on the comparison result. In actual operation, the decision result can include hold and reversal. In one embodiment, the comparison result generated by the comparison unit 41 corresponds one-to-one with the decision result generated by the decision unit 42. The comparison unit 41 is connected to the transmitter 10, the antenna feed tube 50, and the decision unit 42, respectively. The decision unit 42 is also connected to the coaxial module 30 and the system controller 20.

[0065] In this embodiment, the comparison unit 41 can receive the terrestrial digital radio frequency signal and the first signal, and generate a comparison result based on any anomalies in the terrestrial digital radio frequency signal and the first signal. In actual operation, the comparison unit 41 can determine the image corresponding to the terrestrial digital radio frequency signal and the first signal, and then determine the comparison result through pre-set judgment logic. Simultaneously, the decision unit 42 can determine a decision result based on the comparison result. Table 1 shows the pre-set judgment logic.

[0066] Table 1 Decision Logic

[0067] Unit 1 Unit 2 Unit 3 Comparison result Decision result ○ ○ ○ ○ Hold ○ × ○ × Hold ○ ○ × × Hold ○ × × ○ Hold × × ○ × Machine down × ○ × × Machine down × × × ○ Hold × ○ ○ × Hold

[0068] In this context, "○" represents normal; "×" represents abnormal.

[0069] Unit 1 is the image image decoded from the first signal output by the first signal acquired through the antenna feed tube 50; Unit 2 is the image image decoded from the ground digital radio frequency signal output by the transmitter A exciter; and Unit 3 is the image image decoded from the ground digital radio frequency signal output by the transmitter B exciter. Considering practical factors such as error control, the following conclusions can be drawn: When the image in Unit 1 is normal, regardless of whether the images in Unit 2 and Unit 3 are normal, the decision output maintains its current state; when the image in Unit 1 is abnormal, and either Unit 2 or Unit 3 is normal, the decision output performs a reversal operation; when the image in Unit 1 is abnormal, and both Unit 2 and Unit 3 are also abnormal, it is more likely that the front-end signal is abnormal, therefore the decision output maintains its current state.

[0070] Decision unit 42 then determines the decision result based on the comparison result, and generates a transmitter switching command based on the decision result and the connection signal. In actual operation, both the connection signal and the transmitter switching command can be interlocked signals. When the decision result is to hold, the transmitter switching command can be to hold the connection state corresponding to the current connection signal; when the decision result is to switch, the transmitter switching command can be to switch the connection state corresponding to the current connection signal and then reconnect.

[0071] In one embodiment, when the connection signal is interlocking signal 1 and the transmitter switching command is interlocking signal 2, the correspondence between the decision result, the connection signal (interlocking signal 1), and the transmitter switching command (interlocking signal 2) is shown in Table 2.

[0072] Table 2. Correspondence between decision results and transmitter switching commands

[0073]

[0074] In other words, when the decision result is to hold, the interlock signal 2 is the direct output of the interlock signal 1; when the decision result is to switch, the transmitter 10 connected to the antenna feed tube 50 can be considered as a faulty transmitter, and the interlock signal 2 can simulate a fault by briefly performing the interlock signal of the faulty transmitter, so that the coaxial module 30 switches the transmitter 10 connected to the antenna feed tube 50.

[0075] Example 3

[0076] Figure 4 This is a structural schematic diagram of an automatic reversing system for a television transmitter according to Embodiment 3 of this utility model. This embodiment is a further explanation of the structure of an automatic reversing system for a television transmitter based on the above embodiments. Figure 4 As shown, the comparison unit 41 includes a receiving unit 411 and a comparison unit 412.

[0077] The receiving unit 411 is connected to the transmitter 10, the antenna feed tube 50 and the comparison unit 412, and is used to receive the ground digital radio frequency signal and the first signal;

[0078] The comparison unit 412 is also connected to the decision unit 42 and is used to obtain the comparison result based on the ground digital radio frequency signal and the first signal.

[0079] The receiving unit 411 is connected to the transmitter 10, the antenna feed tube 50 and the comparison unit 412 respectively. The comparison unit 412 is also connected to the decision unit 42. The receiving unit 411, the transmitter 10, the antenna feed tube 50 and the comparison unit 412 and the decision unit 42 can be connected by wire.

[0080] In this embodiment, the number of receiving units 411 can be the sum of the number of transmitters 10 and the number of antenna feed tubes 50. Each receiving unit 411 can receive either a ground digital radio frequency signal or a first signal, and transmit the ground digital radio frequency signal and the first signal to the comparison unit 412. The comparison unit 412 can determine the comparison result of the ground digital radio frequency signal and the first signal according to the aforementioned preset decision logic, so as to realize the comparison of the ground digital radio frequency signal and the first signal.

[0081] Example 4

[0082] Figure 5 This is a schematic diagram of an automatic reversing system for a television transmitter according to Embodiment 4 of this utility model. This embodiment is a further explanation of the structure of an automatic reversing system for a television transmitter based on the above embodiments. Figure 5 As shown, the receiving unit 411 includes: a terrestrial digital radio frequency decoding unit 4111 and a video decoding unit 4112;

[0083] The ground digital radio frequency decoding unit 4111 is connected to the transmitter 10, the antenna feed tube 50 and the video decoding unit 4112. It is used to receive the ground digital radio frequency signal and the first signal, convert the ground digital radio frequency signal and the first signal into a data stream format, and send the ground digital radio frequency signal and the first signal in the data stream format to the video decoding unit 4112.

[0084] The video decoding unit 4112 is also connected to the decision unit 42 and is used to convert the ground digital radio frequency signal and the first signal in data stream format into an image format.

[0085] In this embodiment, the terrestrial digital radio frequency (RF) decoding unit 4111 can receive the terrestrial RF signal and the first signal, convert them into data stream format respectively, and then send the data stream format RF signal and the first signal to the video decoding unit 4112. The video decoding unit 4112 can convert the data stream format RF signal and the first signal into an image format. In actual operation, each receiving unit 411 includes a RF decoding unit 4111 and a video decoding unit 4112, which facilitates the determination of the image corresponding to the RF signal and the first signal.

[0086] In one embodiment, Figure 6 According to the signal flow diagram of the automatic switching system for a television transmitter provided in Embodiment 4 of this utility model, as shown below... Figure 6 The diagram illustrates a further explanation of the signal flow of an automatic switching system for a television transmitter, using the connection signal as interlocking signal 1 and the transmitter switching command as interlocking signal 2 as an example.

[0087] The comparison unit 41 acquires the ground digital radio frequency signal and the first signal through radio frequency sampling, determines the comparison result and inputs it to the decision unit 42. The decision unit 42 also receives the connection signal (interlocking signal 1) sent by the coaxial module 30 and generates a transmitter switching command (interlocking signal 2) which is input to the system controller 20.

[0088] In one embodiment, Figure 7 According to a signal sampling diagram provided in Embodiment 4 of this utility model, as follows: Figure 7 As shown, taking transmitter 10, which includes transmitter A and transmitter B, as an example, the coaxial module 30 is connected to the antenna feed tube 50, the transmitter A exciter, and the transmitter B exciter, respectively. The decision module 40 is connected to the antenna feed tube 50, the transmitter A exciter, and the transmitter B exciter, respectively, and is used to acquire the first signal and the ground digital radio frequency signal.

[0089] In one embodiment, Figure 8According to a schematic diagram of a decision module provided in Embodiment 4 of this utility model, as follows: Figure 8 As shown, the decision module 40 includes a comparison unit 41 and a decision unit 42. The comparison unit 41 includes a receiving unit 411 and a comparison unit 412. The receiving unit 1 receives the first signal through system feed tube coupling. The receiving unit 2 receives the ground digital radio frequency signal from transmitter A. The receiving unit 3 receives the ground digital radio frequency signal from transmitter B.

[0090] In one embodiment, Figure 9 According to the signal flow diagram of another automatic switching system for a television transmitter provided in Embodiment 4 of this utility model, as shown in the diagram... Figure 9 As shown, an LGS-8G52+Hi2016 module can be used as the video decoding unit 4112. Data is transmitted to the video decoding unit 4112 via a High-Definition Multimedia Interface (HDMI). An MS2130 capture card is used as the video decoding unit connected to 4112. A computer and an STM32F103 are combined as a comparison unit 41. A TS5A23157 is used as a decision unit 42. The TS5A23157 is connected to the interlocking interface of the coaxial module 30 via an NC interface and to the interlocking interface of the system controller via a COM interface.

[0091] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0092] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic reversing system for a television transmitter, characterized in that, include: At least two transmitters, a system controller, a coaxial module, a decision module, and an antenna feed tube; The transmitter is connected to the coaxial module and the decision module respectively, and is used to transmit ground digital radio frequency signals to the coaxial module and the decision module; The coaxial module is also connected to the decision module, the system controller and the antenna feed tube, and is used to generate a connection signal and send it to the decision module, and to receive a transmitter switching command sent by the system controller to switch the transmitter connected to the antenna feed tube; The antenna feed tube is also connected to the decision module and is used to send the ground digital radio frequency signal transmitted by the connected transmitter as the first signal to the decision module; The decision module is also connected to the system controller and is used to receive the connection signal, the terrestrial digital radio frequency signal and the first signal to determine the transmitter switching command, and send the transmitter switching command to the system controller; The system controller is used to send the transmitter switching command to the coaxial module, so that the coaxial module switches the transmitter connected to the antenna feed tube based on the transmitter switching command.

2. The automatic reversing system for a television transmitter according to claim 1, characterized in that, The system controller is also connected to the transmitter and is used to acquire the operating status of the transmitter, generate control commands based on the operating status, and send them to the transmitter so that the transmitter can adjust the operating status based on the control commands.

3. The automatic reversing system for a television transmitter according to claim 1, characterized in that, The decision module includes: a comparison unit and a decision unit; The comparison unit is connected to the transmitter, the antenna feed tube and the decision unit, and is used to receive the ground digital radio frequency signal and the first signal, generate a comparison result based on the abnormality of the ground digital radio frequency signal and the first signal, and send the comparison result to the decision unit. The decision unit is also connected to the coaxial module and the system controller, and is used to determine the decision result based on the comparison result, and generate a transmitter switching command based on the decision result and the connection signal.

4. The automatic reversing system for a television transmitter according to claim 3, characterized in that, The comparison unit includes: a receiving unit and a comparison unit; The receiving unit is connected to the transmitter, the antenna feed tube, and the comparison unit, and is used to receive the ground digital radio frequency signal and the first signal; The comparison unit is also connected to the decision unit and is used to obtain a comparison result based on the ground digital radio frequency signal and the first signal.

5. The automatic reversing system for a television transmitter according to claim 4, characterized in that, The receiving unit includes: a terrestrial digital radio frequency decoding unit and a video decoding unit; The ground digital radio frequency decoding unit is connected to the transmitter, the antenna feed tube, and the video decoding unit, and is used to receive the ground digital radio frequency signal and the first signal, convert the ground digital radio frequency signal and the first signal into a data stream format, and send the ground digital radio frequency signal and the first signal in the data stream format to the video decoding unit; The video decoding unit is also connected to the decision unit and is used to convert the ground digital radio frequency signal in data stream format and the first signal into an image format.

6. The automatic reversing system for a television transmitter according to claim 1, characterized in that, The transmitter and the decision module, the transmitter and the coaxial module, the antenna feed tube and the coaxial module, and the antenna feed tube and the decision module are connected by radio frequency signal lines; The system controller is connected to the coaxial module, the system controller to the transmitter, and the system controller to the decision module via data control lines.

7. The automatic reversing system for a television transmitter according to claim 1, characterized in that, The coaxial module generates a connection signal when it is simultaneously connected to both the transmitter and the antenna feed tube.

8. The automatic reversing system for a television transmitter according to claim 1, characterized in that, The transmitter switching commands generated by the decision module include hold and reversal.

9. The automatic reversing system for a television transmitter according to claim 3, characterized in that, The comparison results generated by the comparison unit correspond one-to-one with the decision results generated by the decision unit.

10. The automatic reversing system for a television transmitter according to claim 1, characterized in that, The transmitter transmits the terrestrial digital radio frequency signal via an exciter associated with the transmitter.

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