Audio and video matrix switcher

Abstract

The utility model discloses an audio and video matrix switcher, and particularly relates to the field of matrix switchers. The technical key points are as follows: the matrix switcher comprises at least one Type-C input interface, at least one HDMI input interface, at least one Type-C output interface, at least one HDMI output interface, at least one audio output interface, a first converter, a second converter, a third converter, an HDMI audio and video processor, a control processing module and a power supply module; the at least one Type-C input interface is connected to the input end of the first converter, the output end of the first converter is connected to the input end of the HDMI audio and video processor, and the at least one HDMI input interface is connected to the input end of the HDMI audio and video processor; the output end of the HDMI audio and video processor is respectively connected with the input end of the second converter, the input end of the third converter and the at least one HDMI output interface, the output end of the second converter is connected with the at least one Type-C output interface, and the output end of the third converter is connected with the at least one audio output interface.

Description

Technical Field

[0001] The utility model relates to the field of matrix switchers, in particular to an audio and video matrix switcher. Background Art

[0002] With the rapid development of information technology, high-definition audio and video equipment is now ubiquitous in many fields, such as video surveillance and large conference rooms. An audio and video matrix controls the transmission of one or more audio and video signals to one or more display terminals, enabling flexible switching between multiple audio and video input signals and multiple audio and video output signals in the same scenario.

[0003] A Chinese patent application, published with the publication number CN209517343U, discloses an HDMI audio and video switcher, comprising a video switcher, four HDMI inputs, four HDMI outputs, four HDBT mirror outputs, four IR_IN inputs, four IR_OUT outputs, and one IR_EYE input. This device supports 4K@60Hz 4:4:4 HDMI resolution, and the four HDBT mirror outputs have a transmission distance of 70m (1080P) and 40m (4k×2k). Using bidirectional RS232 transmission, the device allows remote control of the matrix via RS232 or separate control of the remote end from the matrix's RS232 port. TCP / IP control is also supported, with the TR signal switching following the video signal to form an IR path. This device addresses the switching requirements for HDMI 2.0 outputs, allowing for switching between any one or more outputs.

[0004] Another Chinese patent, published with the publication number CN204761570U, discloses an HDMI signal matrix adapter comprising a signal input module, a signal output module, a matrix switching module sequentially connected to the signal input module, an audio and video processing module, and the signal output module. The command receiving module receives control commands from the MCU control module. The signal input module includes six HDMI signal inputs, and the signal output module outputs two HDMI signals. The matrix switching module is configured to selectively transmit HDMI input signals from the signal input module to the video processing module. This HDMI signal matrix adapter can simultaneously connect multiple high-definition signal sources to multiple high-definition signal terminals, outputting them to one or more display devices equipped with standard HDMI interfaces.

[0005] The above-mentioned existing technologies only support HDMI input and HDMI output, which is difficult to meet the signal switching requirements of scenarios such as audio and video devices with Type-C output interface and HDMI input interface display terminal, HDMI output interface and Type-C input interface display terminal.

[0006] Therefore, the present invention aims to provide an audio and video matrix switcher to solve the above-mentioned related problems. Utility Model Content

[0007] The technical problem to be solved by the present invention is that the existing technology only supports HDMI input and HDMI output, which is difficult to meet the signal switching requirements of scenarios such as audio and video equipment with Type-C output interface and display terminal with HDMI input interface, HDMI output interface and display terminal with Type-C input interface, etc. The purpose is to provide an audio and video matrix switcher, which solves the problem of single audio and video input and output interfaces in traditional audio and video matrices by setting a Type-C input / output interface and an HDMI input / output interface, and at the same time using a first converter to convert the audio and video signals input by the Type-C input interface into audio and video signals that can be processed by HDMI, and using a second converter to convert the audio and video signals output by the HDMI audio and video processor into audio and video signals that can be output by the Type-C output interface. The switch is more suitable for audio and video signal switching between audio and video output devices and display terminals in different scenarios.

[0008] The utility model is achieved through the following technical solutions:

[0009] An audio and video matrix switcher includes at least one Type-C input interface, at least one HDMI input interface, at least one Type-C output interface, at least one HDMI output interface, at least one audio output interface, a first converter, a second converter, a third converter, an HDMI audio and video processor, a control processing module, and a power supply module;

[0010] At least one Type-C input interface is connected to the input end of the first converter, the output end of the first converter is connected to the input end of the HDMI audio and video processor, and at least one HDMI input interface is connected to the input end of the HDMI audio and video processor; the output end of the HDMI audio and video processor is respectively connected to the input end of the second converter, the input end of the third converter and at least one HDMI output interface, the output end of the second converter is connected to at least one Type-C output interface, and the output end of the third converter is connected to at least one audio output interface; the control processing module is connected to the HDMI audio and video processor, and the power supply module is connected to the control processing module.

[0011] Furthermore, the first converter is specifically a Type-C to HDMI converter; the second converter is specifically an HDMI to Type-C converter; and the third converter is specifically an audio digital-to-analog converter.

[0012] Furthermore, the matrix switcher also includes a display device, which is connected to the control processing module.

[0013] Furthermore, the matrix switcher also includes a network communication module, which is connected to the control processing module.

[0014] Furthermore, the matrix switcher further includes a step-down module, and the power supply module is connected to the control processing module via the step-down module.

[0015] Furthermore, there are two Type-C input interfaces, the first converter has two input ports and two output ports, the two Type-C input interfaces are respectively connected to the two input ports of the first converter in a one-to-one correspondence, and the two output ports of the first converter are respectively connected to the input end of the HDMI audio and video processor.

[0016] Furthermore, there are two Type-C output interfaces, the second converter has two input ports and two output ports, the output end of the HDMI audio and video processor is connected to the two input ports of the second converter, and the two output ports of the second converter are respectively connected to the two Type-C output interfaces in a one-to-one correspondence.

[0017] Furthermore, there are two HDMI input interfaces and two HDMI output interfaces, the output ends of the two HDMI input interfaces are connected to the input end of the HDMI audio and video processor, and the input ends of the two HDMI output interfaces are connected to the output end of the HDMI audio and video processor.

[0018] Furthermore, there are four audio output interfaces, the third converter has four input ports and four output ports, the four input ports of the third converter are all connected to the output end of the HDMI audio and video processor, and the four output ports of the third converter are respectively connected to the four audio output interfaces one by one.

[0019] Furthermore, the network communication module includes an Ethernet communication module and an RJ45 interface, one end of the RJ45 interface is connected to the control processing module through the Ethernet communication module, and the other end of the RJ45 interface is connected to the host computer.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] In the utility model, by setting a Type-C input / output interface and an HDMI input / output interface, a first converter is used to convert the audio and video signals input by the Type-C input interface into audio and video signals that can be processed by HDMI, and a second converter is used to convert the audio and video signals output by the HDMI audio and video processor into audio and video signals that can be output by the Type-C output interface. This solves the problem of the single audio and video input and output interface in the traditional audio and video matrix, and is more suitable for audio and video signal switching between audio and video output devices and display terminals in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0023] Figure 1 Schematic diagram of the structure of an audio and video matrix switcher in this embodiment;

[0024] Figure 2 This is a connection diagram of a step-down module of an audio and video matrix switcher in this embodiment.

[0025] Markings and corresponding parts names in the accompanying drawings:

[0026] 1. Type-C input interface; 2. HDMI input interface; 3. Type-C output interface; 4. HDMI output interface; 5. Audio output interface; 6. First converter; 7. Second converter; 8. Third converter; 9. HDMI audio and video processor; 10. Control processing module; 11. Power supply module; 12. Display device; 13. Network communication module; 131. Ethernet communication module; 132. RJ45 interface; 14. Step-down module. DETAILED DESCRIPTION

[0027] The following description of exemplary embodiments of the present disclosure is made in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0028] In this disclosure, unless otherwise specified, the use of terms such as "first" and "second" to describe various elements is not intended to limit the positional relationship, temporal relationship, or importance relationship of these elements. Such terms are only used to distinguish one element from another. In some examples, the first element and the second element may refer to the same instance of the element, while in some cases, based on the context of the description, they may also refer to different instances.

[0029] The terms used in the descriptions of various examples in this disclosure are for the purpose of describing specific examples only and are not intended to be limiting. Unless the context clearly indicates otherwise, if the number of elements is not specifically limited, the element may be one or more. In addition, the term "and / or" used in this disclosure encompasses any one and all possible combinations of the listed items.

[0030] Example

[0031] See also Figure 1-2 As shown, an audio and video matrix switcher includes at least one Type-C input interface 1, at least one HDMI input interface 2, at least one Type-C output interface 3, at least one HDMI output interface 4, at least one audio output interface 5, a first converter 6, a second converter 7, a third converter 8, an HDMI audio and video processor 9, a control processing module 10 and a power supply module 11;

[0032] At least one Type-C input interface 1 is connected to the input end of the first converter 6, the output end of the first converter 6 is connected to the input end of the HDMI audio and video processor 9, and at least one HDMI input interface 2 is connected to the input end of the HDMI audio and video processor 9; the output end of the HDMI audio and video processor 9 is respectively connected to the input end of the second converter 7, the input end of the third converter 8 and at least one HDMI output interface 4, the output end of the second converter 7 is connected to at least one Type-C output interface 3, and the output end of the third converter 8 is connected to at least one audio output interface 5; the control processing module 10 is connected to the HDMI audio and video processor 9, and the power supply module 11 is connected to the control processing module 10.

[0033] It should be noted that, in this embodiment, the HDMI audio and video processor 9 supports 4-channel HDMI1.4b protocol audio and video signal input, 4-channel HDMI1.4b protocol audio and video signal output, and 4-channel I2S protocol digital audio signal output. It supports receiving signal control instructions and freely switching any input signal to any output channel according to the instructions; the control processing module 10 adopts a low-power, high-performance microcontroller, the specific model is HC32F460KETA; it contains multiple communication interfaces such as I2C, USART, SPI, SDIO, and RMII.

[0034] Specifically, in this embodiment, by setting a Type-C input / output interface and an HDMI input / output interface, and using a first converter 6 to convert the audio and video signals input by the Type-C input interface 1 into audio and video signals that can be processed by HDMI, and using a second converter 7 to convert the audio and video signals output by the HDMI audio and video processor 9 into audio and video signals that can be output by the Type-C output interface 3, the problem of the single audio and video input and output interface in the traditional audio and video matrix is ​​solved, and it is more suitable for audio and video signal switching between audio and video output devices and display terminals in different scenarios.

[0035] As a possible implementation, the first converter 6 is specifically a Type-C to HDMI converter; the second converter 7 is specifically an HDMI to Type-C converter; and the third converter 8 is specifically an audio digital-to-analog converter.

[0036] It should be noted that, in this embodiment, the Type-C to HDMI converter can convert the audio and video input signals of the DP1.4a protocol into audio and video output signals of the MI1.4b protocol; the HDMI to Type-C converter can convert the audio and video input signals of the HDMI1.4b protocol into audio and video output signals of the DP1.4a protocol.

[0037] As a possible implementation, the matrix switcher further includes a display device 12 , which is connected to the control processing module 10 .

[0038] It should be noted that, in this embodiment, the display device 12 adopts a touch display capable of inputting control signals, and supports 4-wire SPI communication and communication connection with the control processing module 10 .

[0039] As a possible implementation, the matrix switcher further includes a network communication module 13 , which is connected to the control processing module 10 .

[0040] It should be noted that, in this embodiment, the network communication module 13 includes an Ethernet communication module 131 and an RJ45 interface 132. The device model used by the Ethernet communication module is RTL8201F. One end of the RJ45 interface 132 is connected to the control processing module 10 through the Ethernet communication module 131, and the other end of the RJ45 interface 132 is connected to the host computer. At the same time, the host computer includes a computer device, smart terminal or mobile terminal that can be used to issue control instructions.

[0041] As a possible implementation, the matrix switcher further includes a voltage reduction module 14 , and the power supply module 11 is connected to the control processing module 10 via the voltage reduction module 14 .

[0042] It should be noted that, in this embodiment, the step-down module 14 includes a 5.0V to 3.3V step-down chip with model number MP1495S, a 5.0V to 2.5V step-down chip with model number BL8039, a 5.0V to 1.5V step-down chip with model number BL8039, a 5.0V to 1.25V step-down chip with model number BL8039, and a 5.0V to 1.1V step-down chip with model number BL8039.

[0043] As a possible implementation method, there are two Type-C input interfaces 1, the first converter 6 has two input ports and two output ports, the two Type-C input interfaces 1 are respectively connected to the two input ports of the first converter 6 in a one-to-one correspondence, and the two output ports of the first converter 6 are respectively connected to the input end of the HDMI audio and video processor 9.

[0044] As a possible implementation, the number of Type-C output interfaces 3 is two, the second converter 7 has two input ports and two output ports, the output end of the HDMI audio and video processor 9 is connected to the two input ports of the second converter 7, and the two output ports of the second converter 7 are respectively connected to the two Type-C output interfaces 3 one by one.

[0045] It should be noted that in this embodiment, the number of Type-C input interface 1 and Type-C output interface 3 are both two. In other embodiments, they may be three, four, five, or other numbers. Both Type-C input interface 1 and Type-C output interface 3 support the DP1.4a protocol and have anti-static and lightning protection functions.

[0046] At the same time, the Type-C to HDMI converter has 2 input ports and 2 output ports, and the input ports correspond to the output ports one-to-one; the HDMI to Type-C processor also has 2 input ports and 2 output ports, and the input ports correspond to the output ports one-to-one.

[0047] As a possible implementation method, there are two HDMI input interfaces 2 and two HDMI output interfaces 4, the output ends of the two HDMI input interfaces 2 are connected to the input ends of the HDMI audio and video processor 9, and the input ends of the two HDMI output interfaces 4 are connected to the output ends of the HDMI audio and video processor 9.

[0048] It should be noted that in this embodiment, the number of HDMI input interfaces 2 and HDMI output interfaces 4 are both two, and in other embodiments, they may be three, four, five or other numbers. Both the HDMI input interface 2 and the HDMI output interface 4 support the HDMI1.4b protocol and have anti-static and lightning protection functions.

[0049] As a possible implementation, the number of audio output interfaces 5 is four, the third converter 8 has four input ports and four output ports, the four input ports of the third converter 8 are all connected to the output end of the HDMI audio and video processor 9, and the four output ports of the third converter 8 are respectively connected to the four audio output interfaces 5 one by one.

[0050] It should be noted that, in this embodiment, the device model used by the audio digital-to-analog converter is ES7144S, which has 4 digital audio signal input ports compliant with the I2S protocol and 4 analog audio signal output ports, with the input ports corresponding to the output ports one to one.

[0051] Working principle: The first converter 6 converts the audio and video signals input from the Type-C input interface 1 and outputs them to the HDMI audio and video processor 9. The HDMI audio and video processor 9 controls the channel connection and closing between the multi-channel input HDMI audio and video signals and the multi-channel output HDMI audio and video signals. The second converter 7 converts the HDMI audio and video signals from the HDMI audio and video processor 9 and outputs them to the Type-C output interface 3. The HDMI input interface 2 and the HDMI output interface 4 are respectively connected to the input port and output port of the HDMI audio and video processor 9; the audio digital-to-analog converter converts the digital audio signal of the HDMI audio and video processor 9 to the HDMI digital-to-analog converter. The signal is converted into an analog audio signal and output; the control processing module 10 is used to receive switching control instructions from the display device 12 and / or the network communication module 13, and then send signal switching instructions to the HDMI audio and video processor 9, and can also control the output of part of the power step-down module 14; the display device 12 is used for human-computer interaction, and the user can send control instructions through the display device 12 and transmit them to the control processing module 10, and at the same time can view the current status of each input interface and output interface; the network communication module 13 is used to connect to an external PC device, and then send instructions to the control processing module 10 through the host computer; the power supply module 11 is used to supply power to each module in the matrix switcher.

[0052] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An audio and video matrix switcher, characterized in that: The matrix switcher comprises at least one Type-C input interface (1), at least one HDMI input interface (2), at least one Type-C output interface (3), at least one HDMI output interface (4), at least one audio output interface (5), a first converter (6), a second converter (7), a third converter (8), an HDMI audio and video processor (9), a control processing module (10), and a power supply module (11); At least one Type-C input interface (1) is connected to the input end of the first converter (6), the output end of the first converter (6) is connected to the input end of the HDMI audio and video processor (9), and at least one HDMI input interface (2) is connected to the input end of the HDMI audio and video processor (9); the output end of the HDMI audio and video processor (9) is respectively connected to the input end of the second converter (7), the input end of the third converter (8) and at least one HDMI output interface (4), the output end of the second converter (7) is connected to at least one Type-C output interface (3), and the output end of the third converter (8) is connected to at least one audio output interface (5); the control processing module (10) is connected to the HDMI audio and video processor (9), and the power supply module (11) is connected to the control processing module (10).

2. The audio and video matrix switcher according to claim 1, characterized in that: The first converter (6) is specifically a Type-C to HDMI converter; the second converter (7) is specifically an HDMI to Type-C converter; and the third converter (8) is specifically an audio digital-to-analog converter.

3. The audio and video matrix switcher according to claim 1, wherein: The matrix switcher also includes a display device (12), and the display device (12) is connected to the control processing module (10).

4. The audio and video matrix switcher according to claim 1, wherein: The matrix switcher also includes a network communication module (13), which is connected to the control processing module (10).

5. The audio and video matrix switcher according to claim 1, characterized in that: The matrix switcher also includes a voltage reduction module (14), and the power supply module (11) is connected to the control processing module (10) via the voltage reduction module (14).

6. The audio and video matrix switcher according to claim 2, characterized in that: There are two Type-C input interfaces (1), the first converter (6) has two input ports and two output ports, the two Type-C input interfaces (1) are respectively connected to the two input ports of the first converter (6) in a one-to-one correspondence, and the two output ports of the first converter (6) are respectively connected to the input end of the HDMI audio and video processor (9).

7. The audio and video matrix switcher according to claim 1, characterized in that: The number of Type-C output interfaces (3) is two, the second converter (7) has two input ports and two output ports, the output end of the HDMI audio and video processor (9) is connected to the two input ports of the second converter (7), and the two output ports of the second converter (7) are respectively connected to the two Type-C output interfaces (3) in a one-to-one correspondence.

8. The audio and video matrix switcher according to claim 1, characterized in that: The number of the HDMI input interface (2) and the number of the HDMI output interface (4) are both two, the output ends of the two HDMI input interfaces (2) are both connected to the input end of the HDMI audio and video processor (9), and the input ends of the two HDMI output interfaces (4) are both connected to the output end of the HDMI audio and video processor (9).

9. The audio and video matrix switcher according to claim 2, characterized in that: The number of the audio output interfaces (5) is four, the third converter (8) has four input ports and four output ports, the four input ports of the third converter (8) are all connected to the output end of the HDMI audio and video processor (9), and the four output ports of the third converter (8) are respectively connected to the four audio output interfaces (5) in a one-to-one correspondence.

10. The audio and video matrix switcher according to claim 4, characterized in that: The network communication module (13) includes an Ethernet communication module (131) and an RJ45 interface (132), one end of the RJ45 interface (132) is connected to the control processing module (10) through the Ethernet communication module (131), and the other end of the RJ45 interface (132) is connected to the host computer.

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