Multipurpose direct sowing machine mainboard

Abstract

The utility model discloses a multipurpose direct broadcasting machine mainboard, which comprises a processing module, the processing module is connected with a power supply module, the power supply module comprises a DC power supply switching module and a battery, and the DC power supply switching module is electrically connected with the battery so as to charge the battery and supply power to the processing module; a multi-interface module; a multifunctional extension module; and an audio acquisition and processing chip. Intelligent switching between DC power supply and battery power supply is achieved, and the cruising ability and safety of equipment are remarkably improved; by integrating the multi-interface module and the multifunctional expansion module, efficient connection and cooperative work of various external devices are supported, and the compatibility and expansibility of the system are remarkably enhanced; and the Wi-Fi 6 wireless communication module is adopted, so that the multi-device parallel connection requirement is met, the data transmission rate and stability are further improved, and excellent performance and user experience are provided in a high-load live broadcast scene.

Description

TECHNICAL FIELD

[0001] The utility model relates to live equipment mainboard technical field, especially to a multipurpose live machine mainboard. BACKGROUND

[0002] In recent years, the rapid development of the live industry has driven the upgrading of related hardware equipment, and live equipment has gradually evolved from traditional single-function to multi-function and high-performance. As an important tool to meet the live needs, the design of the core component mainboard of the live machine is directly related to the performance and user experience of the equipment. The traditional live machine mainboard design usually has the following problems: low function integration: the traditional mainboard can usually only meet the basic video and audio processing functions, cannot efficiently connect multiple external devices, and cannot be compatible with multiple communication interfaces. Insufficient interface: the number of expansion interfaces of the traditional mainboard is limited, and it is difficult to adapt to the demand for parallel use of multiple interfaces in the live scene, such as simultaneously connecting external microphones, cameras, display screens, etc. Limited wireless communication performance: the wireless communication module in the traditional mainboard mostly uses early Wi-Fi technology, which has low speed and insufficient stability, and cannot support efficient connection of multiple devices. Low power management efficiency: due to the characteristics of long-time operation of live equipment, the power management system of the traditional mainboard cannot meet the requirements of long endurance and safe power supply, and is prone to problems such as overheating and power failure. To solve the above problems, the existing technology gradually improves the power management, multi-interface expansion and wireless communication functions, but still has the problems of insufficient integration and poor function expansion. SUMMARY

[0003] Therefore, the utility model provides a multipurpose live machine mainboard, which can realize efficient power management, multi-interface compatibility and wireless communication performance improvement, and also considers the flexible integration of function modules. The utility model provides the following technical scheme:

[0004] A multipurpose live machine mainboard, comprising a processing module, the processing module being connected with:

[0005] A power module, the power module comprising a DC power supply switching module and a battery, the DC power supply switching module being electrically connected with the battery to realize charging of the battery and power supply to the processing module;

[0006] A multi-interface module, the multi-interface module comprising a TYPE-C interface, a TYPE-A interface, an HDMI-IN interface, an HDMI-OUT interface, a LINE-IN interface and an AUDIO-OUT interface;

[0007] A multi-function expansion module, the multi-function expansion module comprising a USB-HUB chip, the USB-HUB chip being in communication connection with the TYPE-C interface and the TYPE-A interface;

[0008] The multifunctional expansion module further comprises an audio acquisition and processing chip, which is in communication connection with the LINE-IN interface and the AUDIO-OUT interface.

[0009] Optionally, further comprising:

[0010] A wireless communication module, which comprises a wifi module in communication connection with the processing module;

[0011] A signal management module in communication connection with the processing module through a GPIO interface;

[0012] A connection module, through which the processing module is electrically connected with the power module, the multi-interface module and the multifunctional expansion module.

[0013] Optionally, the USB-HUB chip is connected with a USB-Switch chip, and a data pin of the USB-Switch chip is connected with the TYPE-C interface.

[0014] The TYPE-C interface acquires the OTG signal sent by the processing module, and the USB-HUB chip is connected with the TYPE-A interface to realize the USB-Switch chip switching the USB-HUB chip connection or single path connection through the OTG signal.

[0015] Optionally, the power module comprises a 12V-DC interface, which is connected with a DC-DC step-down chip, and the DC-DC step-down chip is electrically connected to the processing module, the multifunctional expansion module and the multi-interface module.

[0016] Optionally, the power module further comprises a power supply switching module, which comprises a battery management chip connected to the battery.

[0017] The power module further comprises a MOS tube switching circuit and a voltage comparator, the MOS tube switching circuit selects P-channel and N-channel MOS tubes as switching devices of the power supply path, and the voltage comparator is connected to the DC-DC step-down chip and the battery management chip to detect the input voltage and the battery voltage and transmit the signals to the battery management chip, and the DC voltage is detected by the voltage comparator, and when it is higher than the set threshold, it is switched to DC power supply.

[0018] Optionally, the multi-interface module further comprises a first bridge chip, and the TMDS signal lines of the HDMI-IN interface are connected to the HDMI input pins of the bridge chip through differential signal lines to realize conversion of HDMI and MIPI signals.

[0019] The multi-interface module further comprises a signal conversion chip and a second bridge chip, and the signal lines D+ and D- of the TYPE-C interface and the TYPE-A interface are connected to the signal conversion chip through the USB interface of the second bridge chip, and the second bridge chip converts the signals of the TYPE-C interface and the TYPE-A interface into TMDS signals and then outputs the TMDS signals to the HDMI-OUT interface.

[0020] Optionally, the audio signal lines of the LINE-IN interface are connected to front-end filtering and amplification circuits on the mainboard, the audio signals are connected to the analog input pins of the audio acquisition and processing chip, the I2S data pins of the audio acquisition and processing chip are connected to the I2S end of the processing module, and the power supply pins of the audio acquisition and processing chip are connected to the DC power supply switching module.

[0021] Optionally, the wifi module is connected to the processing module through the SDIO interface thereof, and the wifi module further inlays a Bluetooth module, and the Bluetooth module is connected to the processing module through the UART interface and the PCM interface.

[0022] According to the technical scheme of the utility model, the multi-purpose live broadcast machine mainboard realizes intelligent switching of DC power supply and battery power supply by optimizing the power management module, significantly improves the endurance and safety of the equipment, supports efficient connection and collaborative work of various external devices by integrating the multi-interface module and the multi-functional expansion module, significantly enhances the compatibility and expansibility of the system, adopts the Wi-Fi 6 wireless communication module, meets the multi-device parallel connection demand, and further improves the data transmission rate and stability, thereby providing excellent performance and user experience in a high-load live broadcast scene. BRIEF DESCRIPTION OF DRAWINGS

[0023] For the purpose of illustration but not limitation, the utility model will be described in conjunction with the embodiments of the utility model and the drawings, in which:

[0024] Figure 1 It is the circuit structure schematic view of USB-HUB chip in the embodiment of the utility model;

[0025] Figure 2 It is the circuit structure schematic view of 12V DC interface in the embodiment of the utility model;

[0026] Figure 3is a circuit structure schematic diagram of the DC-DC step-down chip in the embodiment of the utility model;

[0027] Figure 4 is a circuit structure schematic diagram of the HDMI-IN interface in the embodiment of the utility model;

[0028] Figure 5 is a circuit structure schematic diagram of the HDMI-OUT interface in the embodiment of the utility model;

[0029] Figure 6 is a circuit structure schematic diagram of the LINE-IN interface in the embodiment of the utility model;

[0030] Figure 7 is a circuit structure schematic diagram of the wifi module in the embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to make the personnel in the technical field better understand the scheme of the application, the technical scheme in the embodiment of the application will be described clearly and completely in combination with the drawings in the embodiment of the application. Obviously, the described embodiment is only a part of the embodiment of the application, rather than all the embodiments. Based on the embodiment in the application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the application.

[0032] It should be noted that the terms "first", "second" and the like in the specification of the application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0033] It should be noted that the features in the embodiments of the application and the embodiments can be combined with each other without conflict. The embodiments of the application will be described in detail below in combination with the drawings.

[0034] Reference Figures 1-7 The embodiment discloses a multi-purpose live broadcast machine mainboard, including a processing module, the processing module is connected with power module, multi-interface module, multifunctional expansion module, wireless communication module, signal management module and connecting module, wherein

[0035] The power module comprises a DC power supply switching module and a battery, the DC power supply switching module is electrically connected with the battery to realize charging of the battery and power supply of the processing module. The power module further comprises a 12V-DC interface, a DC-DC step-down chip, a battery management chip, a MOS switch circuit and a voltage comparator. The input pin of the 12V-DC interface is connected to the VIN pin of the DC-DC step-down chip, the output pin is connected to the power input end (VCC) of the multi-interface module and the processing module, the battery is connected to the MOS switch circuit through the BAT pin of the battery management chip, the MOS switch circuit selects P-channel and N-channel MOS tubes as switching devices of the power path, and the control end of the switch circuit is connected to the output end of the voltage comparator. The input end of the voltage comparator is connected to the DC voltage and the battery voltage signal respectively, which is used for real-time detection of the input voltage, when the DC voltage is higher than the set threshold, the MOS tube is triggered to switch to the DC power supply path. Otherwise, the battery is used for power supply when the battery is connected. Further, the DC-DC step-down chip is electrically connected to the processing module, the multifunctional expansion module and the multi-interface module.

[0036] The multi-interface module includes a TYPE-C interface, a TYPE-A interface, an HDMI-IN interface, an HDMI-OUT interface, a LINE-IN interface, and an AUDIO-OUT interface. The D+ and D- pins of the TYPE-C interface are connected to the uplink port of the USB HUB chip through the USB Switch chip. The TMDS signal line of the HDMI-IN interface is connected to the HDMI input pin of the first bridge chip, and the MIPI output pin of the bridge chip is connected to the processing module through a differential signal line. The TMDS signal of the HDMI-OUT interface is generated by the second bridge chip, which receives signals from the TYPE-C and TYPE-A interfaces through a signal conversion chip. The audio signal line of the LINE-IN interface is connected to the front-end filtering and amplification circuit, and after processing, it enters the AINL and AINR pins of the audio acquisition and processing chip. Specifically, the TMDS signal (Data0, Data1, Data2, CLK) of the HDMI-IN interface is connected to the HDMI input pin of the first bridge chip through a differential signal line. The first bridge chip converts the TMDS signal into a MIPI signal, and the output end (D0-D3) thereof is connected to the MIPI interface of the processing module through a high-speed data line, for display screen signal transmission. The signal of the HDMI-OUT interface is generated by the second bridge chip, which receives the data signal (D+, D-) of the TYPE-C interface and the TYPE-A interface, and completes the conversion of the USB signal to the TMDS signal through a signal conversion chip. The converted signal is connected to the HDMI-OUT interface through a TMDS differential signal line. The audio signal line (L, R) of the LINE-IN interface is connected to the front-end filtering and amplification circuit, and then transmitted to the AINL and AINR pins of the audio acquisition and processing chip. The I2S output pin (SDATA) of the audio acquisition and processing chip is connected to the I2S interface of the processing module through an I2S bus, for digital processing of the audio signal.

[0037] The multifunctional expansion module comprises a USB-HUB chip to realize the expansion connection of one USB signal to multiple devices, wherein the USB-HUB chip is in communication connection with the TYPE-C interface and the TYPE-A interface. The uplink port of the USB-HUB chip is connected to the output end of the USB-Switch chip, and the downlink port is connected to two TYPE-A interfaces respectively. Specifically, the data pin (D+, D-) of the USB-Switch chip is connected to the TYPE-C interface, and the output end thereof is connected to the uplink port of the USB HUB chip. The TYPE-C interface obtains the OTG signal sent by the processing module, and the downlink port of the USB-HUB chip is connected with the TYPE-A interface to realize the connection of the USB-Switch chip to the USB-HUB chip or single path connection through the OTG signal.

[0038] The multifunctional expansion module further comprises an audio acquisition and processing chip in communication connection with the LINE-IN interface and the AUDIO-OUT interface. The audio signal line of the LINE-IN interface is connected to the front-end filtering and amplifying circuit on the mainboard, the audio signal is connected to the analog input pin of the audio acquisition and processing chip, the I2S data pin of the audio acquisition and processing chip is connected to the I2S end of the processing module, and the power pin of the audio acquisition and processing chip is connected to the DC power supply switching module. Specifically, the analog input end (AINL, AINR) of the audio acquisition and processing chip (ES8388) receives the LINE-IN signal, which is transmitted to the processing module through the I2S interface after internal analog-to-digital conversion. The power pin is connected to the output end of the power module to provide stable power supply for the audio chip.

[0039] The wireless communication module comprises a wifi module in communication connection with the processing module. Specifically, the power input end of the wifi module is provided with 3.3V through the DC-DC chip of the mainboard, and a power filter capacitor and an anti-interference circuit are designed in the circuit to ensure the stability of the wireless signal. The SDIO interface of the Wi-Fi module comprises a command pin (CMD), a clock pin (CLK) and a data pin (DAT0-DAT3), which are connected to the corresponding pins of the processing module respectively. The wifi module is connected to the processing module through the SDIO interface thereof, and the wifi module further has a Bluetooth module embedded therein, which is connected to the processing module through the UART interface and the PCM interface.

[0040] A signal management module is in communication with the processing module through a GPIO interface. An input pin of the GPIO interface is connected to a plug state signal of an external device (such as an HDMI or a USB), and an output pin is connected to a switch control end of the multifunctional expansion module. Through logical control of the processing module, dynamic detection of the device and switching of functions are realized.

[0041] A connection module is used to electrically connect the processing module with the power module, the multi-interface module and the multifunctional expansion module.

[0042] In summary, the DC power supply switching module, the battery management chip, the MOS tube switching circuit and the voltage comparator in the power module are cooperatively designed to realize intelligent switching between 12V DC power supply and battery power supply. When DC input is available, DC power supply is used preferentially and the battery is charged; when there is no DC input, the battery power supply is automatically switched to ensure long-term stable operation of the device. At the same time, a constant-current constant-voltage charging mode is adopted to avoid overcharging and overdischarging of the battery, thereby improving the power supply safety and the battery life. Meanwhile, the mainboard is integrated with various interface modules, including a TYPE-C interface, a TYPE-A interface, an HDMI-IN interface, an HDMI-OUT interface, a LINE-IN interface and an AUDIO-OUT interface, to meet diversified live streaming requirements. The HDMI-IN interface supports conversion of an HDMI signal to an MIPI signal through a bridge chip, so that the device can be used as an external screen. The HDMI-OUT interface supports conversion of a USB signal to an HDMI signal through a bridge chip to realize high-resolution output. The LINE-IN interface supports external audio device signal input to realize high-fidelity audio acquisition in cooperation with an audio processing chip. The AUDIO-OUT interface supports high-definition audio signal output to provide excellent sound quality experience for live streaming scenarios. Further, the USB HUB chip and the USB Switch chip in the multifunctional expansion module are used to realize expansion connection of one USB signal to multiple devices. Multiple external devices (such as a camera and a storage device) can be connected simultaneously without affecting the transmission performance. The USB Switch chip supports OTG signal switching to enable flexible switching of the TYPE-C interface between a host mode and a slave mode, thereby improving the adaptability and the function expansion capability of the device. The power module, the multi-interface module, the multifunctional expansion module, the wireless communication module and the signal management module are organically combined to form a highly integrated mainboard solution, thereby providing stable performance, efficient operation experience and excellent expansion capability.

[0043] The apparatus embodiments described above are only illustrative, and units illustrated as separate components can or can not be physically separate, and components illustrated as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected to achieve the purposes of the embodiments according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0044] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can occur depending on design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multipurpose on-board unit main board comprising a processing module, characterized in that, The processing module is connected with: a power module, the power module includes a DC power switching module and a battery, the DC power switching module is electrically connected with the battery to realize charging of the battery and power supply to the processing module; a multi-interface module, the multi-interface module includes a TYPE-C interface, a TYPE-A interface, an HDMI-IN interface, an HDMI-OUT interface, a LINE-IN interface and an AUDIO-OUT interface; a multifunctional expansion module, the multifunctional expansion module includes a USB-HUB chip, the USB-HUB chip is in communication connection with the TYPE-C interface and the TYPE-A interface; the multifunctional expansion module further includes an audio acquisition and processing chip, the audio acquisition and processing chip is in communication connection with the LINE-IN interface and the AUDIO-OUT interface.

2. The multipurpose on-farm unit mainframe as claimed in claim 1, wherein, Further comprising: a wireless communication module, the wireless communication module includes a wifi module, the wifi module is in communication connection with the processing module; a signal management module, the signal management module is in communication connection with the processing module through a GPIO interface; a connection module, the processing module is electrically connected with the power module, the multi-interface module and the multifunctional expansion module through the connection module.

3. The multipurpose on-farm unit mainframe as claimed in claim 1, wherein, The uplink port of the USB-HUB chip is connected with a USB-Switch chip, the data pin of the USB-Switch chip is connected with the TYPE-C interface; the TYPE-C interface acquires the OTG signal sent by the processing module, the downlink port of the USB-HUB chip is connected with the TYPE-A interface to realize that the USB-Switch chip switches USB-HUB chip connection or single path connection through the OTG signal.

4. The multipurpose on-farm unit mainframe as claimed in claim 1, wherein, The power module includes a 12V-DC interface, the 12V-DC interface is connected with a DC-DC step-down chip, the DC-DC step-down chip is electrically connected to the processing module, the multifunctional expansion module and the multi-interface module.

5. The multipurpose on-farm unit mainframe as claimed in claim 4, wherein, The power module further includes a power supply switching module, the power supply switching module includes a battery management chip, the battery management chip is connected to the battery; The power module further includes a MOS tube switching circuit and a voltage comparator, the MOS tube switching circuit selects P-channel and N-channel MOS tubes as switching devices of the power supply path, the voltage comparator is connected to the DC-DC step-down chip and the battery management chip to realize detection of input voltage and battery voltage, and signals are transmitted to the battery management chip, and the DC voltage is detected through the voltage comparator, and when the DC voltage is higher than the set threshold, the DC power supply is switched.

6. The multipurpose on-farm unit mainframe as claimed in claim 1, wherein, The multi-interface module further includes a first bridge chip, the TMDS signal line of the HDMI-IN interface is connected to the HDMI input pin of the bridge chip through a differential signal line to realize conversion of HDMI and MIPI signals; The multi-interface module further comprises a signal conversion chip and a second bridge chip, signal lines D+ and D- of the TYPE-C interface and the TYPE-A interface are connected to the signal conversion chip through a USB interface of the second bridge chip, and the second bridge chip converts the signals of the TYPE-C interface and the TYPE-A interface into TMDS signals and then outputs the TMDS signals to the HDMI-OUT interface.

7. The multipurpose on-farm unit mainframe as claimed in claim 4, wherein, An audio signal line of the LINE-IN interface is connected to a front-end filtering and amplifying circuit on a mainboard, the audio signal is connected to an analog input pin of the audio acquisition and processing chip, an I2S data pin of the audio acquisition and processing chip is connected to an I2S end of the processing module, and a power supply pin of the audio acquisition and processing chip is connected to the DC power supply switching module.

8. The multipurpose on-farm unit mainframe as claimed in claim 2, wherein, The wifi module is connected to the processing module through an SDIO interface thereof, the wifi module further inlaid with a Bluetooth module, the Bluetooth module is connected to the processing module through a UART interface and a PCM interface.

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