Multi-channel multi-signal video matrix switching device

Abstract

A multi-channel multi-signal video matrix switching device comprises a case, an interface card slot arranged on the case, a plurality of data interfaces arranged in the interface card slot, a single-chip microcomputer mechanism electrically connected with the data interfaces, and a panel key electrically connected with the single-chip microcomputer mechanism and arranged on the case. The single-chip microcomputer mechanism is used for processing and outputting an input signal, a temperature detection mechanism is arranged in the case, and the single-chip microcomputer mechanism comprises a single-chip microcomputer body, a data cross switching chip connected with the single-chip microcomputer body, a video processing chip electrically connected with the data cross switching chip, and an output processing chip electrically connected with the video processing chip; the output processing chip is electrically connected with the data interface. The multi-channel multi-signal video matrix switching device provided by the utility model can support the input and output of different signals, improves the compatibility of the device, is simple in structure, and reduces the operation burden of workers.

Description

Technical Field

[0001] The utility model belongs to the field of multimedia signal control, and in particular relates to a multi-channel multi-signal video matrix switching device. Background Art

[0002] Video matrix switching device (video matrix switcher) is a high-performance intelligent matrix switching device designed for display switching of high-resolution image signals. According to different ways of realizing video switching, video matrix can be divided into analog matrix and digital matrix.

[0003] Video matrix switchers generally use a variety of fixed and independent processing units for switching and distributing video signals, and the signal interface is fixed, and it is impossible to freely select DP, HDMI, VGA, DVI, 3G-SDI, CVBS, YPBPR, Fiber, HDBaseT and other interface forms as input and output signal sources, and the above-mentioned devices must also be integrated and connected through various signal format conversion and transmission equipment and high-definition cables, making the entire system complex to build. For users, the operation is cumbersome, and post-installation debugging and after-sales training are required. In addition, daily debugging and maintenance are also relatively complicated. Therefore, a matrix switching device with multiple video channels and transmitting multiple video signals is needed. The utility model solves this technical problem. Utility Model Content

[0004] The utility model provides a multi-channel multi-signal video matrix switching device, which can support the input and output of different signals, improves the compatibility of the device, has a simple structure, and reduces the operating burden of staff.

[0005] A multi-channel multi-signal video matrix switching device comprises a chassis, an interface card slot arranged on the chassis, a plurality of data interfaces arranged in the interface card slot, a single-chip microcomputer mechanism electrically connected to the data interface, and a panel button electrically connected to the single-chip microcomputer mechanism and arranged on the chassis, wherein the single-chip microcomputer mechanism is used to process and output input signals, and a temperature detection mechanism is arranged in the chassis.

[0006] Furthermore, the single-chip microcomputer mechanism includes a single-chip microcomputer body, a data cross-switch chip connected to the single-chip microcomputer body, a video processing chip electrically connected to the data cross-switch chip, and an output processing chip electrically connected to the video processing chip.

[0007] Furthermore, the plurality of data interfaces include interfaces of different formats respectively.

[0008] Furthermore, the temperature detection mechanism adopts a temperature sensor, and the temperature sensor is connected to the single chip microcomputer mechanism.

[0009] Furthermore, the chassis is provided with an air inlet and an air outlet to facilitate ventilation inside the chassis.

[0010] Furthermore, a plurality of the data interfaces can be detachably connected to the interface card slot, thereby realizing free combination of different interfaces.

[0011] The technical effects of the utility model are as follows:

[0012] (1) This device realizes the input and output of signals of various formats by setting up several data interfaces and processing the video signals through a single-chip microcomputer mechanism, which effectively solves the difficulty of incompatibility of various signals due to the wide variety of video signal sources in conference projects, thereby improving compatibility;

[0013] (2) The data cross-switching chip in the single-chip microcomputer mechanism can ensure that each audio and video signal is transmitted through a dedicated channel, ensuring the real-time display of the signal image;

[0014] (3) Several data interfaces are detachably installed on the interface card slot, which makes it easy for the staff to randomly combine different data interfaces according to actual needs and install them on the interface card slot, thereby avoiding the disadvantages of poor compatibility caused by fixed interfaces, so that the device can receive and output different signals;

[0015] (4) The temperature sensor can monitor the temperature of the air inlet and outlet of the chassis and other key locations in real time, so that users can know the internal temperature of the chassis in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a connection block diagram of the utility model.

[0017] Figure 2 It is the circuit principle diagram of the single chip microcomputer body in the utility model.

[0018] Figure 3 This is a circuit schematic diagram of the temperature sensor in the utility model.

[0019] Figure 4 This is a schematic diagram of the DP data interface in the present utility model.

[0020] Figure 5 It is a schematic diagram of the HDMI data interface in the utility model.

[0021] Figure 6 It is the principle diagram of the VGA data interface in the utility model.

[0022] Figure 7 This is a schematic diagram of the DVI data interface in the utility model.

[0023] Figure 8 It is a schematic diagram of the 3G-SDI and CVBS data interface in the utility model.

[0024] Fig. 9 It is a schematic diagram of the YPBPR, Fiber, and HDBaseT data interfaces in the present utility model.

[0025] Among them, the figure markings are: 1. chassis; 2. interface card slot; 3. data interface; 4. microcontroller body; 5. data cross-switching chip; 6. video processing chip; 7. output processing chip; 8. temperature sensor. DETAILED DESCRIPTION

[0026] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments and drawings.

[0027] See also Figure 1-Figure 9 A multi-channel multi-signal video matrix switching device includes a chassis 1, an interface card slot 2 arranged on the chassis 1, a plurality of data interfaces 3 arranged in the interface card slot 2, a single-chip microcomputer mechanism electrically connected to the data interface 3, and a panel button electrically connected to the single-chip microcomputer mechanism and arranged on the chassis 1. The single-chip microcomputer mechanism is used to process and output input signals, and a temperature detection mechanism is arranged in the chassis 1.

[0028] Furthermore, the single-chip microcomputer mechanism includes a single-chip microcomputer body 4 , a data cross-switch chip 5 connected to the single-chip microcomputer body 4 , a video processing chip 6 electrically connected to the data cross-switch chip 5 , and an output processing chip 7 electrically connected to the video processing chip 6 .

[0029] Furthermore, several of the data interfaces 3 include interfaces of different formats, such as DP data interface, HDMI data interface, VGA data interface, DVI data interface, 3G-SDI data interface, CVBS data interface, YPBPR data interface, Fiber data interface, HDBaseT data interface, etc., and several or more of the interfaces can be selected according to actual needs.

[0030] Furthermore, the temperature detection mechanism adopts a temperature sensor 8, and the temperature sensor 8 is connected to the single-chip microcomputer mechanism, and optionally, a display screen for displaying the temperature can be connected.

[0031] Furthermore, the chassis 1 is provided with an air inlet and an air outlet to facilitate ventilation inside the chassis 1 , and the temperature sensor 8 can be arranged at the air inlet, the air outlet and other key positions of the chassis 1 to monitor the temperature in real time.

[0032] Furthermore, several data interfaces 3 can be detachably connected to the interface card slot 2, so as to realize the free combination of different interfaces. Optionally, the interface card slot 2 can also be detachably connected to the chassis 1. The function of the interface card slot 2 is only to fix the data interface 3, and its shape is not limited. Those skilled in the art can design a specific shape structure based on the function of the interface card slot 2, which is not elaborated here.

[0033] The chassis 1 in this embodiment adopts an all-aluminum chassis 1 to ensure better anti-interference and electromagnetic shielding compatibility. The panel buttons set on the chassis 1 adopt Omron buttons, and the button life can reach more than 1 million times. The single-chip computer body 4 adopts a single-chip computer of model STM32F103R8T6, which adopts a programmable logic array circuit, has a faster running speed and a more stable system, and the temperature sensor 8 adopts a model LM75BIMX-3.

[0034] The working principle of the utility model is as follows:

[0035] First, according to actual needs, select a suitable data interface 3, and install the data interface 3 to the interface card slot 2 on the chassis 1, and then connect several data interfaces 3 to the single-chip computer body 4;

[0036] When the device starts working, the input signal is input to the single-chip computer body 4 through a part of the data interface 3, and then input to the data cross-switch chip 5. After cross-switching, the input signal is connected to the video processing chip 6 for video switching, signal processing algorithm, etc., and then the processed signal is transmitted to the output processing chip 7, and the output signal is encrypted and packaged and output through another part of the data interface 3;

[0037] Through the above method, the difficulties of incompatibility of various signals due to the wide variety of video signal sources in video conferencing projects are solved, and costs are saved to the greatest extent, which is conducive to system upgrades, expansions and maintenance, and meets the needs of various large-scale radio and television projects, multimedia conference halls, large-screen display projects, television teaching, command and control centers and other occasions.

[0038] The above embodiments are only preferred embodiments of the present utility model. Those skilled in the art can obtain other embodiments from the above embodiments without creative work. Therefore, the present application protects not only the above embodiments, but also the scope consistent with the principles and features of the present application.

Claims

1. A multi-channel multi-signal video matrix switching device, characterized in that: The invention comprises a chassis (1), an interface card slot (2) arranged on the chassis (1), a plurality of data interfaces (3) arranged in the interface card slot (2), a single-chip microcomputer mechanism electrically connected to the data interface (3), and a panel key electrically connected to the single-chip microcomputer mechanism and arranged on the chassis (1), wherein the single-chip microcomputer mechanism is used to process and output an input signal, and a temperature detection mechanism is arranged in the chassis (1).

2. The multi-channel multi-signal video matrix switching device according to claim 1, characterized in that: The single-chip microcomputer mechanism comprises a single-chip microcomputer body (4), a data cross-switch chip (5) connected to the single-chip microcomputer body (4), a video processing chip (6) electrically connected to the data cross-switch chip (5), and an output processing chip (7) electrically connected to the video processing chip (6).

3. The multi-channel multi-signal video matrix switching device according to claim 1, characterized in that: The plurality of data interfaces (3) respectively include interfaces of different formats.

4. The multi-channel multi-signal video matrix switching device according to claim 1, characterized in that: The temperature detection mechanism adopts a temperature sensor (8), and the temperature sensor (8) is connected to the single chip microcomputer mechanism.

5. The multi-channel multi-signal video matrix switching device according to claim 1, characterized in that: The chassis (1) is provided with an air inlet and an air outlet.

6. The multi-channel multi-signal video matrix switching device according to claim 1, characterized in that: A plurality of the data interfaces (3) are detachably connected to the interface card slot (2).

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