Video matrix system
By adopting a video processor and main controller that supports multi-channel video input and output in the video matrix system, combined with other key modules, the traditional video matrix system is solved, and a high integration, low complexity and high functionality video matrix system is realized.
Patent Information
- Application Number
- CN202421235088.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
Traditional video matrix systems have problems such as huge size, high energy consumption and difficulty in maintaining.
A video matrix system is designed, using a video processor that supports multi-channel video input and output, combined with the main controller and the receiving module to realize the reception, processing and output of multiple videos. The system also includes components such as ESD protection module, analog-to-digital conversion module, digital-to-analog conversion module and electronic switches.
Through highly integrated design, the complexity and cost of the device are reduced, the volume is reduced, and the installation and movement is facilitated, while improving the functionality and maintainability of the system.
Smart Images
Figure CN222602466U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of video display, in particular to a video matrix system. Background Art
[0002] With the development of multimedia technology and the increasing requirements for video display in conferences, exhibitions and other occasions, traditional video matrix systems often have the problem of low integration. For example, common video matrix systems usually use multiple processing units and multiple video codec chips, which results in a large system size, high energy consumption and difficult maintenance. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a video matrix system in view of the technical defects of the prior art such as large volume, high energy consumption and difficult maintenance.
[0004] The technical solution adopted by the utility model to solve the technical problem is: constructing a video matrix system, including:
[0005] A video processor supporting multi-channel video input and output, the video processor comprising: N video input interfaces for respectively accessing one channel of video signals, and N video output interfaces for respectively outputting one channel of video signals, wherein N is greater than or equal to 2;
[0006] A receiving module for receiving control instructions input by a user;
[0007] A main controller is respectively connected to the video processor and the receiving module, and is used to control the video processor to process the video signal input from the corresponding video input interface and output it through the corresponding video output interface according to the control instruction.
[0008] Preferably, it also includes: 2N ESD protection modules, and N of the ESD protection modules are connected one-to-one between N video sources and N video input interfaces of the video processor, and the other N ESD protection modules are connected one-to-one between N video output interfaces of the video processor and N displays.
[0009] Preferably, the video processor further comprises: an I2S audio input interface, an I2S audio output interface, M digital audio input interfaces for respectively accessing one digital audio signal, and M digital audio output interfaces for respectively outputting one digital audio signal, wherein M is greater than or equal to 2;
[0010] The video matrix system further includes an analog-to-digital conversion module, a digital-to-analog conversion module, M first electronic switches, and a second electronic switch, wherein:
[0011] The first input ends of the M first electronic switches are connected to the M digital audio sources in a one-to-one correspondence, and the first output ends of the M first electronic switches are connected to the M digital audio input interfaces of the video processor in a one-to-one correspondence; the second input ends of the M first electronic switches are connected to the M digital audio output interfaces of the video processor in a one-to-one correspondence, and the second output ends of the M first electronic switches are connected to the M digital speakers in a one-to-one correspondence;
[0012] The input end of the analog-to-digital conversion module is connected to an analog audio source, the output end of the analog-to-digital conversion module is connected to a first input end of the second electronic switch, the first output end of the second electronic switch is connected to an I2S audio input interface of the video processor, the I2S audio output interface of the video processor is connected to a second input end of the second electronic switch, the second output end of the second electronic switch is connected to the input end of the digital-to-analog conversion module, and the output end of the digital-to-analog conversion module is connected to an analog speaker.
[0013] Preferably, the receiving module includes at least one of the following: an infrared remote control receiving module, a key module, and a touch screen module.
[0014] Preferably, the video input interface is an HDMI input interface, and the video output interface is an HDMI output interface; or,
[0015] The video input interface is a DP input interface, and the video output interface is a DP output interface; or,
[0016] The video input interface is a DVI input interface, and the video output interface is a DVI output interface.
[0017] Preferably, the main controller is an MCU of model STM32F207ZGT; the video processor is an audio and video processing chip of model MS1826.
[0018] Preferably, the video matrix system further comprises an RJ45 network port, a network port transformer, and an Ethernet transceiver which are connected in sequence, and the RJ45 network port is also connected to a host computer, and the Ethernet transceiver is also connected to the main controller.
[0019] Preferably, the video matrix system further comprises a DB9 port and an RS232 transceiver which are connected in sequence, and the DB9 port is also connected to a central control device, and the RS232 transceiver is also connected to the main controller.
[0020] Preferably, it also includes:
[0021] An indication module connected to the main controller and used for indicating the operating status.
[0022] Preferably, a power module is also included, and the power module includes:
[0023] Power interface for connecting to an external 12V DC power supply;
[0024] A power protection circuit connected to the power interface and used for power protection;
[0025] A first DC / DC module connected to the power protection circuit and used for converting a 12V DC voltage into a 5V DC voltage;
[0026] A voltage stabilizing module connected to the first DC / DC module and used to convert a 5V DC voltage into a 3.3V DC voltage and supply power to the main controller;
[0027] a third electronic switch, wherein a first end of the third electronic switch is connected to an output end of the first DC / DC module;
[0028] A second DC / DC module connected to the second end of the third electronic switch and used to convert the 5V DC voltage into a 1.1V DC voltage and power the video processor;
[0029] a third DC / DC module connected to the second end of the third electronic switch and used for converting the 5V DC voltage into a 1.5V DC voltage and supplying power to the video processor;
[0030] a fourth DC / DC module connected to the second end of the third electronic switch and used for converting the 5V DC voltage into a 2.5V DC voltage and supplying power to the video processor;
[0031] A fifth DC / DC module is connected to the second end of the third electronic switch and is used for converting the 5V DC voltage into a 3.3V DC voltage and supplying power to the video processor.
[0032] By implementing the technical solution of the utility model, the video matrix system uses a video processor that supports multi-channel video input and output. Therefore, only one main controller and one video processor are needed to realize the reception, processing and output of multi-channel videos. This highly integrated design reduces the complexity and cost of the device, while reducing the size of the device, making it easy to install and move. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:
[0034] Figure 1 This is a logical structure diagram of the first embodiment of the video matrix system of the utility model;
[0035] Figure 2This is a logical structure diagram of the second embodiment of the video matrix system of the utility model;
[0036] Figure 3 yes Figure 2 Application connection diagram of the video matrix system;
[0037] Figure 4 It is a logical structure diagram of the first embodiment of the power supply module in the video matrix system of the utility model. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0039] Figure 1 1 is a logical structure diagram of the first embodiment of the video matrix system of the utility model. The video matrix system of this embodiment includes a video processor 11, a main controller 12 and a receiving module 13. Among them, the video processor 11 supports four-channel (i.e., N=4) video input and output, and includes: four video input interfaces for accessing one video signal, four video output interfaces for outputting one video signal, and it should be understood that in other embodiments, N can be other numbers greater than or equal to 2, such as 6, 8, etc. The receiving module 13 is used to receive control instructions input by the user, and the control instructions include, for example: input / output channel selection instructions, and may also include video segmentation instructions, video splicing instructions, resolution switching instructions, brightness adjustment instructions, contrast adjustment instructions, OSD subtitle customization instructions, etc. The main controller 12 is connected to the video processor 11 and the receiving module 13 respectively. For example, the main controller 12 is connected to the video processor 11 via I2C, and is used to control the video processor 11 to process the video signal input by the corresponding video input interface and output it through the corresponding video output interface according to the control instruction.
[0040] Through the technical solution of this embodiment, the video matrix system uses a video processor that supports multi-channel video input and output. Therefore, only one main controller and one video processor are needed to realize the reception, processing and output of multi-channel videos. This highly integrated design reduces the complexity and cost of the device, while reducing the size of the device, making it easy to install and move.
[0041] Figure 2It is a logical structure diagram of the second embodiment of the video matrix system of the utility model. In the video matrix system of this embodiment, the main controller 12 is an MCU of the model STM32F207ZGT, which is responsible for coordinating and controlling the working logic sequence of each module. The video processor 11 is an audio and video processing chip of the model MS1826, so that efficient data processing and video encoding and decoding can be achieved. Moreover, the video processor supports ultra-clear picture quality input / output of four-way HDMI and 4K resolution, and can provide clear and delicate video display effects to meet the needs of high-end conferences and exhibitions; it also supports the input / output of four-way digital audio signals and the input / output of one-way analog balanced audio signals; it also supports seamless switching, video segmentation, video splicing, OSD subtitle customization, resolution switching, brightness adjustment, contrast adjustment and other functions, which can meet the video display needs in different occasions. It should be understood that the video input / output interface of the video processor of this embodiment is an HDMI interface, but in other embodiments, the video input / output interface of the video processor can also be a DP input / output interface or a DVI input / output interface.
[0042] Combination Figure 2 and Figure 3 , compared with the video matrix system of this embodiment Figure 1 The embodiment shown also includes eight ESD protection modules 141, 142, and four of the ESD protection modules 141 are connected one-to-one between four video sources and N video input interfaces of the video processor, and the other four ESD protection modules 142 are connected one-to-one between N video output interfaces of the video processor and N displays. In this embodiment, four video signals are input to the video processor 11 via the ESD protection module 141, and are processed by the internal algorithm of the video processor 11 and then output to the video output interface via the four ESD protection modules 142. Moreover, the ESD protection modules 141, 142 can effectively protect against electrostatic shock and surge when the HDMI interface is hot-plugged.
[0043] In this embodiment, combined Figure 2 and Figure 3The video processor also includes an I2S audio input interface, an I2S audio output interface, four (i.e., M=4) digital audio input interfaces for respectively accessing one digital audio signal, and four digital audio output interfaces for respectively outputting one digital audio signal. It should be understood that in other embodiments, M can be any natural number greater than or equal to 2. Moreover, the video matrix system also includes an analog-to-digital conversion module 17, a digital-to-analog conversion module 18, four first electronic switches 15, and a second electronic switch 16, wherein the first electronic switch 15 uses an electronic switch of model SGM3157, and the second electronic switch 16 uses an electronic switch of model TS3A44159. The analog-to-digital conversion module 17 uses an integrated chip of model ES7243E, and the digital-to-analog conversion module 18 uses an integrated chip of model ES8156. In this embodiment, the first input ends of the four first electronic switches 15 are connected to four digital audio sources in one-to-one correspondence, the first output ends of the four first electronic switches 15 are connected to four digital audio input interfaces of the video processor in one-to-one correspondence, the second input ends of the four first electronic switches 15 are connected to four digital audio output interfaces of the video processor in one-to-one correspondence, and the second output ends of the four first electronic switches 15 are connected to four digital speakers in one-to-one correspondence. The input end of the analog-to-digital conversion module 17 is connected to the analog audio source, the output end of the analog-to-digital conversion module 17 is connected to the first input end of the second electronic switch, the first output end of the second electronic switch 16 is connected to the I2S audio input interface of the video processor 11, the I2S audio output interface of the video processor 11 is connected to the second input end of the second electronic switch 16, the second output end of the second electronic switch 16 is connected to the input end of the digital-to-analog conversion module 18, and the output end of the digital-to-analog conversion module 18 is connected to the analog speaker. In this embodiment, four digital audio signals (SPDIF_IN) are input to the video processor 11 through the four first electronic switches 15 to embed digital audio. Four digital audio signals (SPDIF) are outputted by the video processor 11 through four first electronic switches 15 to realize the de-embedding of digital audio. After the analog balanced audio signal (AUDIO_IN) is converted by the analog-to-digital conversion module 17, it is inputted to the video processor from the second electronic switch 16 to perform the embedding of analog balanced audio. Moreover, the analog-to-digital conversion module 17 communicates with the MCU 11 through I2C to realize the control of logical data, and the analog-to-digital conversion module 17 communicates with the video processor 11 through I2S to realize the digital transmission of audio. The audio signal of the video processor 11 can be converted to the digital-to-analog conversion module 18 through the second electronic switch 16 to output the analog balanced audio (AUDIO_OUT) to realize de-embedding. Moreover, the digital-to-analog conversion module 18 communicates with the MCU 11 through I2C, and the digital-to-analog conversion module 18 communicates with the video processor 11 through I2S.
[0044] like Figure 2 and Figure 3As shown, the receiving module 13 of this embodiment includes: an infrared remote control receiving module, a button module, and a touch screen module. In this embodiment, there are multiple ways for users to control the video matrix system: the infrared signals of different wavelengths are transmitted by the remote control, and the infrared remote control receiving module receives and decodes them and transmits them to the MCU, so as to realize the remote control of the switching of various functions of the video matrix system; the user can realize the operation of basic functions, such as mode switching, channel switching, etc., through the function buttons on the video device; the user can seamlessly switch, video splitting, video splicing, OSD subtitle customization, resolution switching, brightness adjustment, contrast adjustment, volume adjustment and other functions through the touch screen module.
[0045] like Figure 2 and Figure 3 As shown, the video matrix system of this embodiment also includes an RJ45 network port, a network port transformer, and an Ethernet transceiver connected in sequence, and the RJ45 network port is also connected to a host computer, and the Ethernet transceiver is also connected to a main controller. In this embodiment, the PC host computer is connected to the RJ45 network port, and the data operated by the user on the host computer can be protected by the network port transformer and then transmitted to the MCU by the Ethernet transceiver (for example, model DP83848C).
[0046] like Figure 2 and Figure 3 As shown, the video matrix system of this embodiment also includes a DB9 port and an RS232 transceiver connected in sequence, and the DB9 port is also connected to the central control device, and the RS232 transceiver is also connected to the main controller. In this embodiment, the central control device is connected through the DB9 port, and the RS232 transceiver converts the RS232 signal into a TTL level signal, and then performs UART communication with the MCU, so that remote control can be achieved.
[0047] like Figure 2 and Figure 3 As shown, the video matrix system of this embodiment also includes an indication module, which is connected to the MCU and is used to indicate the operating status, for example, whether the power supply is working normally, whether the MCU is running normally, and whether the signals of the four-way HDMI input / output interface are normal.
[0048] In this embodiment, the clock crystal provides the clock frequency for the MCU and the video processor. The reset module and the reset circuit can reset the MCU and the video processor respectively. The Flash is used as a memory to store the program data required by the MCU. The burning and debugging module is used for firmware burning and serial port debugging of the mainboard.
[0049] The video matrix system of the utility model also comprises a power supply module, and the power supply module supplies power to the whole device.
[0050] Figure 4The present invention is a logic structure diagram of the first embodiment of the power module in the video matrix system of the utility model. The power module of the embodiment includes: a power interface, a power protection circuit, a first DC / DC module, a voltage stabilizing module, a third electronic switch, a second DC / DC module, a third DC / DC module, a fourth DC / DC module, and a fifth DC / DC module. Among them, the power interface is used to access an external 12V DC power supply. The power protection circuit is connected to the power interface and is used to perform power protection. The first DC / DC module is connected to the power protection circuit and is used to convert a 12V DC voltage into a 5V DC voltage. The voltage stabilizing module is connected to the first DC / DC module and is used to convert a 5V DC voltage into a 3.3V DC voltage and power the main controller. The first end of the third electronic switch is connected to the output end of the first DC / DC module. The second DC / DC module is connected to the second end of the third electronic switch and is used to convert a 5V DC voltage into a 1.1V DC voltage and power the video processor. The third DC / DC module is connected to the second end of the third electronic switch and is used to convert a 5V DC voltage into a 1.5V DC voltage and power the video processor. The fourth DC / DC module is connected to the second end of the third electronic switch and is used to convert the 5V DC voltage into a 2.5V DC voltage and power the video processor. The fifth DC / DC module is connected to the second end of the third electronic switch and is used to convert the 5V DC voltage into a 3.3V DC voltage and power the video processor. In this embodiment, the power interface is connected to an external 12V DC power supply, and the power protection circuit protects the incoming power signal to prevent abnormal conditions such as short circuit, reverse connection, and electrostatic surge impact from causing damage to the subsequent stage. The first DC / DC module uses a DC-DC DC step-down chip with a model number of TPS54360BDDAR to convert the input 12V DC voltage into a 5V DC voltage to the lower-level voltage stabilizing module and other lower-level DC / DC modules, and also powers the touch screen. The voltage stabilizing module uses an LDO with a model number of MS1117-3.3V to reduce the 5V DC voltage to a 3.3V DC voltage, and power the infrared remote control receiving module, RS232 transceiver module, Ethernet transceiver module, and MCU. The third electronic switch is a soft switch, which controls the on and off of the 5V DC voltage and supplies power to each DC / DC module of the lower level. The second, third, fourth and fifth DC / DC modules of the lower level respectively use the adjustable step-down chip of model LP3201AB5F to provide 1.1V, 1.5V, 2.5V and 3.3V DC power to the video processor respectively. In addition, the DC / DC module of the lower level also supplies the generated 3.3V DC voltage to the analog-to-digital conversion module, the digital-to-analog conversion module and the SPDIF digital audio circuit.
[0051] The above description is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of the claims of the utility model.
Claims
1. A video matrix system, characterized in that: include: A video processor supporting multi-channel video input and output, the video processor comprising: N video input interfaces for respectively accessing one video signal, N video output interfaces for respectively outputting one video signal, wherein N is greater than or equal to 2; a receiving module for receiving control instructions input by a user; and a main controller respectively connected to the video processor and the receiving module, and used to control the video processor to process the video signal input by the corresponding video input interface and output it through the corresponding video output interface according to the control instruction.
2. The video matrix system according to claim 1, characterized in that: Also includes: 2N ESD protection modules, and N of the ESD protection modules are connected one-to-one between N video sources and N video input interfaces of the video processor, and the other N ESD protection modules are connected one-to-one between N video output interfaces of the video processor and N displays.
3. The video matrix system according to claim 1, characterized in that: The video processor further includes: an I2S audio input interface, an I2S audio output interface, M digital audio input interfaces for respectively accessing one digital audio signal, and M digital audio output interfaces for respectively outputting one digital audio signal, wherein M is greater than or equal to 2; The video matrix system further includes an analog-to-digital conversion module, a digital-to-analog conversion module, M first electronic switches, and a second electronic switch, wherein: The first input ends of the M first electronic switches are connected to the M digital audio sources in a one-to-one correspondence, and the first output ends of the M first electronic switches are connected to the M digital audio input interfaces of the video processor in a one-to-one correspondence; the second input ends of the M first electronic switches are connected to the M digital audio output interfaces of the video processor in a one-to-one correspondence, and the second output ends of the M first electronic switches are connected to the M digital speakers in a one-to-one correspondence; The input end of the analog-to-digital conversion module is connected to an analog audio source, the output end of the analog-to-digital conversion module is connected to a first input end of the second electronic switch, the first output end of the second electronic switch is connected to an I2S audio input interface of the video processor, the I2S audio output interface of the video processor is connected to a second input end of the second electronic switch, the second output end of the second electronic switch is connected to the input end of the digital-to-analog conversion module, and the output end of the digital-to-analog conversion module is connected to an analog speaker.
4. The video matrix system according to claim 1, characterized in that: The receiving module includes at least one of the following: an infrared remote control receiving module, a key module, and a touch screen module.
5. The video matrix system according to claim 1, characterized in that: The video input interface is an HDMI input interface, and the video output interface is an HDMI output interface; or, The video input interface is a DP input interface, and the video output interface is a DP output interface; or, The video input interface is a DVI input interface, and the video output interface is a DVI output interface.
6. The video matrix system according to claim 1, characterized in that: The main controller is an MCU of model STM32F207ZGT; the video processor is an audio and video processing chip of model MS1826.
7. The video matrix system according to claim 1, characterized in that: The video matrix system also includes an RJ45 network port, a network port transformer, and an Ethernet transceiver which are connected in sequence, and the RJ45 network port is also connected to a host computer, and the Ethernet transceiver is also connected to the main controller.
8. The video matrix system according to claim 1, characterized in that: The video matrix system also includes a DB9 port and an RS232 transceiver which are connected in sequence, and the DB9 port is also connected to a central control device, and the RS232 transceiver is also connected to the main controller.
9. The video matrix system according to claim 1, characterized in that: Also includes: An indication module connected to the main controller and used for indicating the operating status.
10. The video matrix system according to claim 1, characterized in that: A power module is also included, and the power module includes: Power interface for connecting to an external 12V DC power supply; A power protection circuit connected to the power interface and used for power protection; A first DC / DC module connected to the power protection circuit and used for converting a 12V DC voltage into a 5V DC voltage; A voltage stabilizing module connected to the first DC / DC module and used to convert a 5V DC voltage into a 3.3V DC voltage and supply power to the main controller; a third electronic switch, wherein a first end of the third electronic switch is connected to an output end of the first DC / DC module; A second DC / DC module connected to the second end of the third electronic switch and used to convert the 5V DC voltage into a 1.1V DC voltage and power the video processor; a third DC / DC module connected to the second end of the third electronic switch and used for converting the 5V DC voltage into a 1.5V DC voltage and supplying power to the video processor; a fourth DC / DC module connected to the second end of the third electronic switch and used for converting the 5V DC voltage into a 2.5V DC voltage and supplying power to the video processor; A fifth DC / DC module is connected to the second end of the third electronic switch and is used for converting the 5V DC voltage into a 3.3V DC voltage and supplying power to the video processor.