Station CCTV system multi-picture processor detection device

Abstract

The utility model provides a station CCTV system multi-picture processor detection device, and belongs to the technical field of equipment detection. The station CCTV system multi-picture processor detection device comprises a multipath serial digital interface SDI signal generation circuit, a high-definition multimedia interface HDMI signal generation circuit and a display module. The input end of the multipath SDI signal generation circuit is connected with a signal source; the output end of the multi-path SDI signal generation circuit is connected with the input end of the multi-picture processor; the input end of the HDMI signal generation circuit is connected with the output end of the multi-picture processor; the output end of the HDMI signal generation circuit is connected with the display module; the display module is used for displaying pictures. The station CCTV system multi-picture processor detection device provided by the utility model is not limited by test time, and can carry out function detection on the CCTV system multi-picture processor without setting up an independent test device, thereby reducing the detection cost.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment detection, in particular to a multi-picture processor detection device for a CCTV system in a station. Background Art

[0002] In subway station closed-circuit television (CCTV) systems, a multi-image processor stitches and combines multiple video channels, then outputs the processed images to an LCD monitor for display. The spliced ​​images provided by the processor provide train crews with information about the platform and passengers boarding and alighting, and provide train dispatchers and station staff with a spliced ​​image display of any monitored station.

[0003] There are currently two ways to test the functions of the multi-image processor of the station CCTV system. One is to connect the multi-image processor to be tested to the station CCTV system for testing. The other is to build a set or part of the station CCTV system test equipment to meet the test requirements.

[0004] If the multi-screen processor to be tested is connected to the station CCTV system for testing, there will be problems such as testing inconvenience and limited testing time. To solve this problem, a set or part of the station CCTV system test equipment can be built for testing, but this testing method has the problem of high testing cost. Utility Model Content

[0005] The utility model provides a station CCTV system multi-picture processor detection device, which is used to solve the technical problem of high detection cost of the station CCTV system multi-picture processor in the prior art.

[0006] The utility model provides a multi-image processor detection device for a station CCTV system, comprising a multi-channel serial digital interface SDI signal generation circuit, a high-definition multimedia interface HDMI signal generation circuit and a display module;

[0007] Among them, the input end of the multi-channel SDI signal generation circuit is connected to the signal source; the output end of the multi-channel SDI signal generation circuit is connected to the input end of the multi-screen processor; the input end of the HDMI signal generation circuit is connected to the output end of the multi-screen processor; the output end of the HDMI signal generation circuit is connected to the display module; and the display module is used to display the picture.

[0008] In some embodiments, the multi-channel SDI signal generation circuit includes an HDMI-SDI signal conversion module and an SDI signal amplification module;

[0009] The input end of the HDMI-SDI signal conversion module is connected to the signal source; the output end of the HDMI-SDI signal conversion module is connected to the input end of the SDI signal amplification module; and the output end of the SDI signal amplification module is connected to the input end of the multi-image processor.

[0010] In some embodiments, the SDI signal amplification module includes one or more SDI signal distributors;

[0011] Each SDI signal splitter is used to split the input SDI signal into two channels.

[0012] In some embodiments, the HDMI-SDI signal conversion module includes an HDMI signal receiver and a digital video signal converter;

[0013] The input end of the HDMI signal receiver is connected to the signal source; the output end of the HDMI signal receiver is connected to the digital video signal converter; the input of the HDMI signal receiver is an HDMI signal, and the output is a differential digital signal;

[0014] The output end of the digital video signal converter is connected to the input end of the SDI signal amplification module; the input of the digital video signal converter is a differential digital signal, and the output is an SDI signal.

[0015] In some embodiments, the HDMI signal generation circuit includes an SDI signal receiver and an HDMI signal converter;

[0016] The input end of the SDI signal receiver is connected to the output end of the multi-image processor; the output end of the SDI signal receiver is connected to the HDMI signal converter; the SDI signal receiver is used to amplify the input SDI signal;

[0017] The output end of the HDMI signal converter is connected to the display module; the input of the HDMI signal converter is an SDI signal, and the output is an HDMI signal.

[0018] In some embodiments, it further includes a signal status judgment circuit and an indication module;

[0019] The input end of the signal status judgment circuit is connected to the input end of the HDMI signal generation circuit; the output end of the signal status judgment circuit is connected to the indication module; the signal status judgment circuit is used to monitor the signal status; and the indication module is used to indicate whether the signal status is abnormal.

[0020] In some embodiments, the indication module includes an indicator light;

[0021] When the signal status judgment circuit detects that the signal status is abnormal, the indicator light is displayed in a first color; the first color is used to indicate that the signal status is abnormal;

[0022] When the signal status judgment circuit detects that the signal status is normal, the indicator light is displayed in a second color; the second color is used to indicate that the signal status is normal.

[0023] In some embodiments, the input end of the signal state determination circuit is further connected to the output end of the multi-channel SDI signal generation circuit;

[0024] The input end of the signal state judgment circuit is also connected to the output end of the HDMI signal generation circuit.

[0025] In some embodiments, a cooling fan is further included;

[0026] The cooling fan is located above or beside the multi-channel SDI signal generating circuit and the HDMI signal generating circuit; the cooling fan is used to dissipate heat for the device.

[0027] In some embodiments, the station CCTV system multi-image processor detection device further includes a power module;

[0028] The power supply module is connected to the input end of the multi-channel SDI signal generating circuit, the input end of the HDMI signal generating circuit, the input end of the multi-screen processor, the input end of the display module and the cooling fan; the power supply module is used to provide DC12V / DC5V dual output.

[0029] The utility model provides a station CCTV system multi-screen processor detection device, comprising a multi-channel serial digital interface (SDI) signal generating circuit, a high-definition multimedia interface (HDMI) signal generating circuit, and a display module. The input end of the multi-channel SDI signal generating circuit is connected to a signal source; the output end of the multi-channel SDI signal generating circuit is connected to the input end of the multi-screen processor; the input end of the HDMI signal generating circuit is connected to the output end of the multi-screen processor; the output end of the HDMI signal generating circuit is connected to the display module; and the display module is used to monitor and display the status of the output signal of the HDMI signal generating circuit. The utility model does not require access to the station CCTV system for testing, is not limited by test time, and does not require the construction of an independent testing device to perform functional testing on the CCTV system multi-screen processor, thereby reducing the testing cost of the multi-screen processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 The utility model is a schematic diagram of a multi-image processor detection device for a station CCTV system.

[0032] Figure 2 It is a schematic diagram of a multi-channel SDI signal generating circuit provided by the utility model.

[0033] Figure 3 This is a schematic diagram of the HDMI signal generating circuit provided by the utility model.

[0034] Figure 4 The utility model is a schematic diagram of the front panel structure of a multi-image processor detection device for a station CCTV system.

[0035] Figure 5 The utility model is a schematic diagram of the rear panel structure of a multi-image processor detection device for a station CCTV system.

[0036] Figure 6 The utility model is a schematic diagram of the installation stud structure of the multi-image processor detection device of the station CCTV system provided by the present invention.

[0037] Reference numerals:

[0038] 110: multi-channel SDI signal generation circuit; 120: HDMI signal generation circuit; 130: display module; 140: multi-screen processor; 150: signal source. DETAILED DESCRIPTION

[0039] The working principle of the multi-screen processor of the CCTV system in railway stations is as follows: the digital video signal output by the camera is transmitted to the communication equipment room via an Ethernet switch, decoded by a digital video decoder and outputting multiple video images to the multi-screen processor. After the images are spliced ​​and combined, the video signal is output and transmitted to (or transmitted to via a high-definition optical terminal) an LCD monitor for display.

[0040] Currently, the functional testing of the multi-image processor is carried out by connecting the multi-image processor to the station CCTV system. This will affect the normal operation of the station CCTV system and bring inconvenience to the testing of the multi-image processor. Alternatively, a simulation test can be carried out by building one or part of the station CCTV system test equipment, and the test time is no longer limited, but this will increase the testing cost.

[0041] Based on the above technical problems, the present invention proposes a multi-screen processor detection device for a station CCTV system, comprising a multi-channel serial digital interface SDI signal generating circuit, a high-definition multimedia interface HDMI signal generating circuit and a display module; wherein the input end of the multi-channel SDI signal generating circuit is connected to the signal source; the output end of the multi-channel SDI signal generating circuit is connected to the input end of the multi-screen processor; the input end of the HDMI signal generating circuit is connected to the output end of the multi-screen processor; the output end of the HDMI signal generating circuit is connected to the display module; and the display module is used to monitor and display the status of the output signal of the HDMI signal generating circuit. There is no need to connect to the station CCTV system for testing, and there is no limit on the test time. There is no need to build an independent test device to perform functional testing on the CCTV system multi-screen processor, which reduces the testing cost of the multi-screen processor.

[0042] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] Figure 1 This is a schematic diagram of the multi-image processor detection device for the station CCTV system provided by the present invention. Figure 1 As shown, the utility model provides a station CCTV system multi-image processor detection device, comprising:

[0044] A multi-channel serial digital interface SDI signal generating circuit 110, a high-definition multimedia interface HDMI signal generating circuit 120 and a display module 130;

[0045] Among them, the input end of the multi-channel SDI signal generating circuit 110 is connected to the signal source 150; the output end of the multi-channel SDI signal generating circuit 110 is connected to the input end of the multi-screen processor 140; the input end of the HDMI signal generating circuit 120 is connected to the output end of the multi-screen processor 140; the output end of the HDMI signal generating circuit 120 is connected to the display module 130; and the display module 130 is used to display the picture.

[0046] Specifically, in the embodiment of the present application, the detection of the multi-image processor is described by taking a four-image processor as an example, and can be expanded to different multi-image processors in actual application.

[0047] The quad-image processor uses the Phase Alteration Line (PAL) system, with HD-SDI (1080P) / 75Ω video input and HD-SDI (1080P) / 75Ω video output. Based on the quad-image processor's input signal requirements, multiple signal conversion and processing modules are used to simulate and generate the required input signals. The output signals are then converted and connected to the display module, where the display determines whether the quad-image processor is functioning properly.

[0048] In an embodiment of the present application, a signal source is connected to the input end of a multi-channel SDI signal generation circuit to provide an input signal to the multi-channel SDI signal generation circuit. The input signal is a High Definition Multimedia Interface (HDMI) signal. The signal is input to the multi-channel SDI signal generation circuit, converted and processed, and then output as a multi-channel SDI signal (if the processor to be detected is a four-screen processor, then it is a four-channel SDI signal here).

[0049] The output of the multi-channel SDI signal generation circuit is connected to the input of the multi-viewer processor. The multi-channel SDI signal generation circuit outputs four SDI signals to the quad-viewer processor, which synthesizes the four SDI signals and adds channel information such as date, time, and location according to user requirements, and outputs a single SDI signal.

[0050] The output of the multi-image processor is connected to the input of the HDMI signal generation circuit. The quad-image processor outputs the processed SDI signal to the HDMI signal generation circuit, which converts the SDI signal into an HDMI signal, allowing a display device such as a monitor to view the displayed content.

[0051] The display module can be a monitor. In order to monitor whether there are any abnormalities in the signal output by the HDMI signal generation circuit, the monitor is connected to the output terminal of the HDMI signal generation circuit. The monitor displays the final output image. The user views the image displayed on the monitor. If the displayed image is clear, without jitter or color difference, it indicates that the multi-image processor and SDI device are normal. Otherwise, it is determined that the multi-image processor and / or SDI device are faulty.

[0052] The station CCTV system multi-screen processor detection device provided in the embodiment of the present application uses the signal output by the multi-channel SDI signal generation circuit to simulate the input signal of the multi-screen processor, and combines the HDMI signal generation circuit to simulate the working process of the multi-screen processor in the station CCTV system, and adds a display module to display the final output image. The user can check the image display status and understand whether the multi-screen processor is normal, thereby realizing the functional detection of the multi-screen processor and reducing the detection cost.

[0053] In some embodiments, the multi-channel SDI signal generation circuit includes an HDMI-SDI signal conversion module and an SDI signal amplification module;

[0054] The input end of the HDMI-SDI signal conversion module is connected to the signal source; the output end of the HDMI-SDI signal conversion module is connected to the input end of the SDI signal amplification module; and the output end of the SDI signal amplification module is connected to the input end of the multi-image processor.

[0055] Specifically, the multi-channel SDI signal generation circuit includes an HDMI-SDI signal conversion module and an SDI signal amplification module.

[0056] The input end of the HDMI-SDI signal conversion module is connected to the signal source. The signal source outputs the HDMI signal to the HDMI-SDI signal conversion module, and the HDMI-SDI signal conversion module converts the input HDMI signal into an SDI signal.

[0057] The output of the HDMI-SDI signal conversion module is connected to the input of the SDI signal amplification module. The SDI signal output from the HDMI-SDI signal conversion module is input to the SDI signal amplification module, which amplifies the SDI signal and distributes it into multiple SDI signals. If the multi-view processor is a quad-view processor, the HDMI-SDI signal conversion module outputs four SDI signals.

[0058] The output of the SDI signal amplifier module is connected to the input of the multi-view processor. The SDI signal amplifier module transmits the output four-channel SDI signals to the quad-view processor, which synthesizes the four-channel SDI signals and adds channel information such as date, time, and location according to user requirements, and outputs a single SDI signal.

[0059] In some embodiments, the SDI signal amplification module includes one or more SDI signal distributors;

[0060] Each SDI signal splitter is used to split the input SDI signal into two channels.

[0061] Specifically, the SDI signal amplification module includes one or more SDI signal distributors, each of which is used to distribute the input SDI signal into two channels.

[0062] For the functional test of the four-image processor, two SDI signal distributors are required. One SDI signal passes through these two SDI signal distributors and outputs four SDI signals.

[0063] Optionally, the SDI signal distributor can use an SDI signal driver (GV8500). The SDI signal amplification module has a built-in automatic detection function, which can automatically identify compatible SDI signal formats and achieve distortion-free and delay-free distribution of one high-definition SDI signal into four signals.

[0064] The station CCTV system multi-screen processor detection device provided in the embodiment of the present application simulates multiple SDI signals input to the multi-screen processor through an HDMI-SDI signal conversion module and an SDI signal amplification module, so that when performing functional testing on the multi-screen processor, there is no need to connect the multi-screen processor to the actual station CCTV system, nor is there a need to install an independent test system. Instead, an additional circuit is used to generate a measurement signal and connect it to the multi-screen processor. The operation is simple and convenient, the application flexibility is improved, and the detection cost is low.

[0065] In some embodiments, the HDMI-SDI signal conversion module includes an HDMI signal receiver and a digital video signal converter;

[0066] The input end of the HDMI signal receiver is connected to the signal source; the output end of the HDMI signal receiver is connected to the digital video signal converter; the input of the HDMI signal receiver is an HDMI signal, and the output is a differential digital signal;

[0067] The output end of the digital video signal converter is connected to the input end of the SDI signal amplification module; the input of the digital video signal converter is a differential digital signal, and the output is an SDI signal.

[0068] Specifically, the HDMI-SDI signal conversion module includes an HDMI signal receiver and a digital video signal converter.

[0069] The input end of the HDMI signal receiver is connected to the signal source. The signal source outputs the HDMI signal and transmits it to the HDMI signal receiver, which converts the HDMI signal into a differential digital signal.

[0070] Optionally, the HDMI signal receiver can be an HDMI1.3 receiving chip (EP9351), which is compatible with HDMI1.3 and below signal formats, and supports HDMI signal input timings including 480I, 576I, 720P, 1080I and 1080P.

[0071] The output end of the HDMI signal receiver is connected to the digital video signal converter. The HDMI signal receiver outputs a differential digital signal, which is transmitted to the digital video signal converter. The digital video signal converter converts the differential digital signal into an SDI signal and outputs it to the SDI signal amplification module.

[0072] Optionally, the digital video signal converter may be a digital video signal conversion chip (GV7600).

[0073] Figure 2 This is a schematic diagram of a multi-channel SDI signal generation circuit provided by the present invention. Figure 2 As shown, the HDMI signal is input to the HDMI signal receiver, which converts the HDMI signal into a differential digital signal and outputs it to the digital video signal converter; the digital video signal converter converts the differential digital signal into an SDI signal and outputs it to the SDI signal amplification module; the SDI signal amplification module amplifies the SDI signal, distributes it into four-channel SDI signals, and transmits it to the four-screen processor.

[0074] The station CCTV system multi-screen processor detection device provided in the embodiment of the present application simulates multiple SDI signals input to the multi-screen processor through an HDMI signal receiver, a digital video signal converter and an SDI signal amplification module, so that when performing functional testing on the multi-screen processor, there is no need to connect the multi-screen processor to the actual station CCTV system, nor is there a need to install an independent test system. The operation is simple and convenient, the application flexibility is improved, and the detection cost is low.

[0075] In some embodiments, the HDMI signal generation circuit includes an SDI signal receiver and an HDMI signal converter;

[0076] The input end of the SDI signal receiver is connected to the output end of the multi-image processor; the output end of the SDI signal receiver is connected to the HDMI signal converter; the SDI signal receiver is used to amplify the input SDI signal;

[0077] The output end of the HDMI signal converter is connected to the display module; the input of the HDMI signal converter is an SDI signal, and the output is an HDMI signal.

[0078] Specifically, the HDMI signal generating circuit includes an SDI signal receiver and an HDMI signal converter. The SDI signal receiver is used to amplify the input SDI signal.

[0079] Figure 3 This is a schematic diagram of the HDMI signal generating circuit provided by the present invention, such as Figure 3 As shown, the input of the SDI signal receiver is connected to the output of the multi-image processor. The multi-image processor combines the four SDI signals and adds channel information, then outputs a single SDI signal to the SDI signal receiver. The SDI signal receiver processes and amplifies the input SDI signal.

[0080] The output of the SDI signal receiver is connected to the HDMI signal converter. After the SDI signal is processed and amplified by the SDI receiver, it is converted into an HDMI signal by the HDMI signal converter.

[0081] Optionally, the HDMI signal converter may be an HDMI converter (ANX8560), which may convert SD-SDI, HD-SDI, and 3G-SDI signals into HDMI signals.

[0082] The station CCTV system multi-screen processor detection device provided in the embodiment of the present application realizes the conversion of SDI signals to HDMI signals through an SDI signal receiver and an HDMI signal converter, so that the SDI signal output by the multi-screen processor is converted into an HDMI signal, so that the display content can be observed on the display device, allowing the user to know the signal status and determine whether the multi-screen processor is operating normally.

[0083] In some embodiments, it further includes a signal status judgment circuit and an indication module;

[0084] The input end of the signal status judgment circuit is connected to the input end of the HDMI signal generation circuit; the output end of the signal status judgment circuit is connected to the indication module; the signal status judgment circuit is used to monitor the signal status; and the indication module is used to indicate whether the signal status is abnormal.

[0085] Specifically, the station CCTV system multi-image processor detection device also includes a signal state judgment circuit and an indication module.

[0086] The signal status determination circuit includes a single-chip microcontroller. An input of the signal status determination circuit is connected to an input of an HDMI signal generation circuit and is configured to monitor the signal status of the input signal of the HDMI signal generation circuit, i.e., the output signal of the multi-image processor. An output of the signal status determination circuit is connected to an indicator module, which is configured to provide feedback of the monitoring result of the signal status determination circuit to a user in the form of an indication.

[0087] For example, a four-sided processor processes four SDI signals and outputs one SDI signal. When outputting it to the HDMI signal generation circuit, the signal status judgment circuit synchronously monitors the signal status of this SDI signal and feeds back the status information to the user through the indication module, so that the user can obtain information on whether the status of this SDI signal is abnormal.

[0088] The station CCTV system multi-screen processor detection device provided in the embodiment of the present application connects a signal status judgment circuit to the output end of the multi-screen processor or the input end of the HDMI signal generation circuit to monitor the status of the SDI signal output by the multi-screen processor, and displays the status information of the signal to the user through the indication module, thereby helping to determine whether the multi-screen processor is faulty.

[0089] In some embodiments, the input end of the signal state determination circuit is further connected to the output end of the multi-channel SDI signal generation circuit;

[0090] The input end of the signal state judgment circuit is also connected to the output end of the HDMI signal generation circuit.

[0091] Specifically, the input end of the signal status judgment circuit can also be connected to the output end of the multi-channel SDI signal generating circuit and the output end of the HDMI signal generating circuit, and the signal status of the output signal of the multi-channel SDI signal generating circuit, the output signal of the HDMI signal generating circuit, etc. can be monitored using the signal status of the output signal of the multi-channel SDI signal generating circuit, the output signal of the HDMI signal generating circuit, etc.

[0092] The station CCTV system multi-screen processor detection device provided in the embodiment of the present application has a signal status judgment circuit that can monitor the input / output signals of multiple circuits or devices, obtain the status of each input / output signal and indicate it to the user. When there is a problem with the display screen, it can help the user determine the cause of the fault or locate the fault position, thereby realizing accurate detection of the multi-screen processor and SDI equipment.

[0093] In some embodiments, the indication module includes an indicator light;

[0094] When the signal status judgment circuit detects that the signal status is abnormal, the indicator light is displayed in a first color; the first color is used to indicate that the signal status is abnormal;

[0095] When the signal status judgment circuit detects that the signal status is normal, the indicator light is displayed in a second color; the second color is used to indicate that the signal status is normal.

[0096] Specifically, the indication module includes one or more LED indicator lights.

[0097] Each indicator light can be set to indicate the signal status of a signal, and whether the signal status is normal or not is distinguished by two colors.

[0098] For example, when the signal status determination circuit detects an abnormal signal status, the indicator light displays a first color (e.g., red), notifying the user that the corresponding signal is abnormal and that the multi-viewer processor or SDI device is faulty. When the signal status determination circuit detects a normal signal status, the indicator light displays a second color (e.g., green), notifying the user that the corresponding signal is normal.

[0099] The station CCTV system multi-screen processor detection device provided in the embodiment of the present application indicates whether the signal status is normal or abnormal through the different colors of indicator lights, which is convenient for users to observe, enables users to quickly determine the location of the abnormality, and helps to better detect the multi-screen processor and SDI equipment.

[0100] In some embodiments, a cooling fan is further included;

[0101] The cooling fan is located above or beside the multi-channel SDI signal generating circuit and the HDMI signal generating circuit; the cooling fan is used to dissipate heat for the device.

[0102] Specifically, cooling fans are installed above or to the sides of each circuit to help dissipate heat from the detection device. This ensures the long-term normal operation of the station CCTV system multi-image processor detection device. Based on the station CCTV system multi-image processor detection device's low power consumption and low heat generation, the configuration of cooling fans further ensures the safety and reliability of the device's operation.

[0103] In some embodiments, the station CCTV system multi-image processor detection device further includes a power module;

[0104] The power supply module is connected to the input end of the multi-channel SDI signal generating circuit, the input end of the HDMI signal generating circuit, the input end of the multi-screen processor, the input end of the display module and the cooling fan; the power supply module is used to provide DC12V / DC5V dual output.

[0105] Specifically, the station CCTV system multi-screen processor detection device also includes a power supply module. The source module is connected to the input end of the multi-channel SDI signal generating circuit, the input end of the HDMI signal generating circuit, the input end of the multi-screen processor, the input end of the display module and the cooling fan. The power supply module is used to supply power to each circuit, display module, multi-screen processor and cooling fan.

[0106] Optionally, the power module uses the Mean Well industrial power module, which supports wide voltage (82V-264VAC) input, is small in size, has an operating temperature of up to 70 degrees, has short circuit, overload, and overvoltage protection, has high efficiency and high reliability and low electromagnetic interference, can isolate input and output to improve safety; supports DC12V / DC5V dual output, providing stable, sufficient and reliable power output for each part of the board and fan.

[0107] In the embodiment of the present application, the housing of the multi-image processor detection device of the station CCTV system is a metal housing with a height of 1U.

[0108] Figure 4 This is a schematic diagram of the front panel structure of the multi-image processor detection device for the station CCTV system provided by the present invention. Figure 4 As shown, the front panel is 480mm long and 44.4mm high. There are handles on either side of the front panel, each 25mm long and 44.4mm high. The front panel features a power switch (PWR SW), four LED indicators, an SDI input port (SDI INPUT), an HDMI output port (HDMI OUTPUT), and four SDI output ports (4 SDIOUT). The four SDI signals output by the SDI signal amplifier module are transmitted to the quad-view processor via the 4 SDI OUT ports. The one SDI signal output by the quad-view processor is transmitted to the SDI signal receiver via the SDI INPUT. The HDMI signal output by the HDMI signal converter is transmitted to the display via the HDMI OUTPUT. The four LED indicators indicate the status of the HDMI signal receiver's input signal, the output signal of the SDI signal amplifier module, the input signal of the SDI signal receiver (i.e., the output signal of the quad-view processor), and the output signal of the HDMI signal converter.

[0109] Figure 5 This is a schematic diagram of the rear panel structure of the multi-image processor detection device for the station CCTV system provided by the utility model. Figure 5 As shown, the rear panel is 430mm long and 44.4mm high. It houses the AC input, fuse, heat dissipation vents, and HDMI input. The signal source transmits HDMI signals to the HDMI receiver via the HDMI IN port, the power module supplies power to the detection device via the AC input, and the cooling fan dissipates heat through the heat dissipation vents.

[0110] Figure 6 This is a schematic diagram of the installation stud structure of the station CCTV system multi-image processor detection device provided by the utility model, such as Figure 6 As shown in the HDMI port dimensions on the left, 4.2mm is the narrow side height of the HDMI port, 6mm is the overall height of the HDMI port, and 15.6mm is the overall width of the HDMI port. In the copper pillar dimensions on the right, 10mm is the height from the bottom of the splitter to the baseboard, 10.5mm is the height from the "SDI to HDMI" connector to the baseboard, and 12.5mm is the height from the "HDMI to SDI" connector to the baseboard.

[0111] The multi-image processor testing device for a station CCTV system provided in an embodiment of the present application connects the multi-image processor and SDI equipment to a display, allowing for functional testing of the CCTV system multi-image processor by simply viewing the display screen. This simple and convenient operation saves time and effort. Furthermore, the test device has a certain degree of scalability, enabling not only testing of the multi-image processor but also functional and stability testing of the video decoder (i.e., HDMI-SDI signal conversion module) and SDI converter (i.e., HDMI-SDI signal conversion module).

[0112] It should be noted that the division of units / modules in the above embodiments of the present invention is schematic and is merely a logical function division. There may be other division methods in actual implementation.

[0113] It should also be noted that the terms "first," "second," and the like in this disclosure are used to distinguish similar objects, and are not intended to describe a specific order or precedence. It should be understood that the terms used in this disclosure are interchangeable where appropriate, such that embodiments of the disclosure can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "first" and "second" generally distinguish objects of the same type, and do not limit the number of objects. For example, the first object may be one or more.

[0114] In the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0115] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage) containing computer-usable program code.

[0116] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A station CCTV system multi-image processor detection device, characterized in that: It includes a multi-channel SDI signal generation circuit, a high-definition multimedia interface HDMI signal generation circuit and a display module; Among them, the input end of the multi-channel SDI signal generation circuit is connected to the signal source; the output end of the multi-channel SDI signal generation circuit is connected to the input end of the multi-screen processor; the input end of the HDMI signal generation circuit is connected to the output end of the multi-screen processor; the output end of the HDMI signal generation circuit is connected to the display module; and the display module is used to display the picture.

2. The station CCTV system multi-image processor detection device according to claim 1, characterized in that: The multi-channel SDI signal generation circuit includes an HDMI-SDI signal conversion module and an SDI signal amplification module; The input end of the HDMI-SDI signal conversion module is connected to the signal source; the output end of the HDMI-SDI signal conversion module is connected to the input end of the SDI signal amplification module; and the output end of the SDI signal amplification module is connected to the input end of the multi-image processor.

3. The station CCTV system multi-image processor detection device according to claim 2, characterized in that: The SDI signal amplification module includes one or more SDI signal distributors; Each SDI signal splitter is used to split the input SDI signal into two channels.

4. The station CCTV system multi-image processor detection device according to claim 2, characterized in that: The HDMI-SDI signal conversion module includes an HDMI signal receiver and a digital video signal converter; The input end of the HDMI signal receiver is connected to a signal source; the output end of the HDMI signal receiver is connected to a digital video signal converter; the input of the HDMI signal receiver is an HDMI signal, and the output is a differential digital signal; The output end of the digital video signal converter is connected to the input end of the SDI signal amplification module; the input of the digital video signal converter is a differential digital signal, and the output is an SDI signal.

5. The station CCTV system multi-image processor detection device according to claim 1, characterized in that: The HDMI signal generating circuit includes an SDI signal receiver and an HDMI signal converter; The input end of the SDI signal receiver is connected to the output end of the multi-image processor; the output end of the SDI signal receiver is connected to the HDMI signal converter; the SDI signal receiver is used to amplify the input SDI signal; The output end of the HDMI signal converter is connected to the display module; the input of the HDMI signal converter is an SDI signal, and the output is an HDMI signal.

6. The station CCTV system multi-image processor detection device according to claim 1, characterized in that: It also includes a signal status judgment circuit and an indication module; The input end of the signal state judgment circuit is connected to the input end of the HDMI signal generating circuit; the output end of the signal state judgment circuit is connected to the indication module; the signal state judgment circuit is used to monitor the state of the signal; The indication module is used to indicate whether the signal status is abnormal.

7. The station CCTV system multi-image processor detection device according to claim 6, characterized in that: The indication module includes an indicator light; When the signal status judgment circuit detects that the signal status is abnormal, the indicator light is displayed in a first color; the first color is used to indicate that the signal status is abnormal; When the signal status judgment circuit detects that the signal status is normal, the indicator light is displayed in a second color; the second color is used to indicate that the signal status is normal.

8. The station CCTV system multi-image processor detection device according to claim 6, characterized in that: The input end of the signal state judgment circuit is also connected to the output end of the multi-channel SDI signal generation circuit; the input end of the signal state judgment circuit is also connected to the output end of the HDMI signal generation circuit.

9. The station CCTV system multi-image processor detection device according to claim 1, characterized in that: Also includes cooling fans; The cooling fan is located above or beside the multi-channel SDI signal generating circuit and the HDMI signal generating circuit; the cooling fan is used to dissipate heat for the device.

10. The station CCTV system multi-image processor detection device according to claim 9, characterized in that: The station CCTV system multi-image processor detection device also includes a power supply module; The power supply module is connected to the input end of the multi-channel SDI signal generating circuit, the input end of the HDMI signal generating circuit, the input end of the multi-screen processor, the input end of the display module and the cooling fan; the power supply module is used to provide DC12V / DC5V dual output.

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