CN219834217U - Recording and broadcasting host equipment - Google Patents

Abstract

The utility model discloses a recording and broadcasting host device, which comprises: the device comprises a main control processor, a video input processing module, a first HDMI interface unit, a second HDMI interface unit, a third HDMI interface unit, a universal serial bus output unit and a liquid crystal display output unit; the video input processing module converts the video input signal into a target video input signal in form and sends the target video input signal to the main control processor; the main control processor is used for processing the target video input signal into at least four video sources according to the received video source demand information, and outputting the at least four video sources through the first HDMI interface unit, the second HDMI interface unit, the third HDMI interface unit, the universal serial bus output unit and the liquid crystal display output unit according to the video source demand information. The display device connected with the recording and broadcasting host device can realize four-screen different display, meets the display output requirement under the teaching scene, and improves the adaptive use scene and the display effect of the recording and broadcasting host device.

Description

Recording and broadcasting host equipment

Technical Field

The utility model relates to the technical field of interactive teaching, in particular to recording and broadcasting host equipment.

Background

The recording and broadcasting host equipment plays an important role in links such as audio and video information processing, acquisition, transmission, recording and broadcasting and the like as terminal hardware equipment for education informatization and teaching activity informatization.

The conventional recording and broadcasting host is often applied to interactive teaching in a recording and broadcasting application scene, so that audio and video information of a main speaker in an interactive process is transmitted to a cloud through a network to realize bidirectional transmission. When the recording and broadcasting host is applied to an interactive classroom, the interactive classroom often uses one to two real devices to display different video pictures in the interactive teaching process.

However, in general, only a small number of display output interfaces are configured in the recording host, where the number of display output interfaces is related to the number of native HDMI (High Definition Multimedia Interface, high-definition multimedia interface) output interfaces of the recording host, and when the number of display devices to be connected to the recording host exceeds the number of display output interfaces, a certain one of the display output interfaces is often expanded by a distributor. However, the pictures expanded by the distributor belong to duplicate pictures, and it is difficult to display different video sources on all the connected display devices, so that the richness of video presentation in the interactive classroom is reduced.

Disclosure of Invention

The utility model provides a recording and broadcasting host device, which is used for outputting different video picture information on a plurality of display devices connected with the recording and broadcasting host device according to display requirements, and simultaneously realizing direct docking of the recording and broadcasting host device and conference software in an all-in-one machine or a computer, thereby improving the adaptation use scene and the display effect of the recording and broadcasting host device.

According to an aspect of the present utility model, there is provided a recording and playing host device, including a main control processor, a video input processing module, a first HDMI interface unit, a second HDMI interface unit, a third HDMI interface unit, a universal serial bus output unit, and a liquid crystal screen output unit;

the first HDMI interface unit is connected with a first native HDMI output interface of the main control processor; the second HDMI interface unit is connected with a second native HDMI output interface of the main control processor; the third HDMI interface unit is connected with the data pulse output interface of the main control processor through the first video conversion unit; the universal serial bus output unit is connected with a universal serial bus output interface of the main control processor; the liquid crystal screen output unit is connected with the mobile industry processor output interface of the main control processor through a second video conversion unit;

The video input processing module is in communication connection with the main control processor and is used for receiving video input signals, converting the video input signals into target video input signals, and sending the target video input signals to the main control processor;

the main control processor is used for processing the target video input signal into at least four video sources according to the received video source demand information, and outputting the at least four video sources through the first HDMI interface unit, the second HDMI interface unit, the third HDMI interface unit, the universal serial bus output unit and the liquid crystal display output unit according to the video source demand information.

In one possible implementation, the video input processing module includes an HDMI input interface unit, a third video conversion unit, and a switch chip;

the HDMI input interface unit is connected with the mobile industry processor input interface of the main control processor through the third video conversion unit and is used for transmitting the HDMI input signal to the third video conversion unit when the HDMI input signal is received, performing form conversion on the HDMI input signal by the third video conversion unit to obtain a target video input signal, and transmitting the target video input signal to the main control processor through the mobile industry processor input interface;

And the switch chip is connected with the main control processor through a bus and is used for integrating all video streams and sending the video streams to the main control processor through the bus when receiving the video streams input by at least one camera.

In one possible implementation manner, the recording and playing host device further includes: an audio processing module;

the audio processing module is in communication connection with the main control processor and is used for receiving the audio input signal, processing the audio input signal to obtain an audio output signal, integrating the audio input signal and the audio output signal and then sending the integrated audio input signal and the audio output signal to the main control processor;

the main control processor is also used for aligning the target video input signal with the audio output signal so as to align pictures corresponding to at least four video sources with audio corresponding to the audio output signal.

In one possible implementation, an audio processing module includes: the device comprises an audio processing unit, a first audio input unit, a first audio output unit, a second audio input unit, a third audio input unit, a second audio output unit and a microphone receiving unit;

the first audio input unit, the first audio output unit, the second audio input unit, the third audio input unit, the second audio output unit and the microphone receiving unit are respectively in communication connection with the audio processing unit;

The first audio input unit is correspondingly arranged with the first audio output unit, and the second audio input unit and the third audio input unit are correspondingly arranged with the second audio output unit;

the first audio input unit is used for collecting a first audio input signal, and the first audio input signal is a linear stereo audio signal;

the first audio output unit is used for outputting a first audio output signal which is a linear stereo audio signal;

the second audio input unit is used for collecting a second audio input signal, and the second audio input signal is a linear stereo signal;

the third audio input unit is used for collecting a third audio input signal, and the third audio input signal is one path of HDMI audio signal;

the second audio output unit is used for outputting a second audio output signal which is a linear stereo audio signal;

the microphone receiving unit is used for receiving microphone input signals, wherein the microphone input signals are two paths of audio input signals;

and the audio processing unit is used for processing the input first audio input signal, the second audio input signal, the third audio input signal and the microphone input signal and outputting the generated first audio output signal and second audio output signal through the first audio output unit and the second audio output unit.

In one possible implementation manner, the recording and playing host device further includes: a wired internet of things module;

the wired internet of things module is connected with the main control processor through a serial port and is used for realizing the serial port function through a preset level conversion chip when the whole recording and broadcasting host equipment is in a power-off state.

In one possible implementation manner, the recording and playing host device further includes: a wireless internet of things module;

the wireless internet of things module is connected with the main control processor through a universal serial bus interface and is used for triggering an interrupt mechanism through received starting information when the recording and broadcasting host equipment is in an integral shutdown state so that the main control processor controls the recording and broadcasting host equipment to be electrified;

and the wireless internet of things module is also used for transmitting the received shutdown information to the main control processor through the universal serial bus interface when the recording and broadcasting host equipment is in a startup state, so that the main control processor controls the recording and broadcasting host equipment to shutdown.

In one possible implementation manner, the wireless internet of things module is further configured to wirelessly connect with an external sound box and perform volume control on the external sound box according to the received volume control instruction.

In one possible implementation manner, the recording and playing host device further includes: a network processing module;

The network processing module is in communication connection with the main control processor and is used for sending the video source and the audio output signal to the external network for live broadcast or interactive transmission.

In one possible implementation manner, the network processing module is further configured to supply power to an IP-based terminal that is in the same intranet as the recording and playing host device, and exchange network information with the IP-based terminal.

In one possible implementation, the first video conversion unit is a converter for converting the data pulse signal into an HDMI signal; the second video conversion unit is a converter for converting the mobile industry processor signal into an embedded display port signal.

The embodiment of the utility model provides a recording and broadcasting host device, which comprises: the device comprises a main control processor, a video input processing module, a first HDMI interface unit, a second HDMI interface unit, a third HDMI interface unit, a universal serial bus output unit and a liquid crystal display output unit; the first HDMI interface unit is connected with a first native HDMI output interface of the main control processor; the second HDMI interface unit is connected with a second native HDMI output interface of the main control processor; the third HDMI interface unit is connected with the data pulse output interface of the main control processor through the first video conversion unit; the universal serial bus output unit is connected with a universal serial bus output interface of the main control processor; the liquid crystal screen output unit is connected with the mobile industry processor output interface of the main control processor through a second video conversion unit; the video input processing module is in communication connection with the main control processor and is used for receiving video input signals, converting the video input signals into target video input signals, and sending the target video input signals to the main control processor; the main control processor is used for processing the target video input signal into at least four video sources according to the received video source demand information, and outputting the at least four video sources through the first HDMI interface unit, the second HDMI interface unit, the third HDMI interface unit, the universal serial bus output unit and the liquid crystal display output unit according to the video source demand information. By adopting the technical scheme, the master control processor in the recording and broadcasting host equipment processes the target video input signals acquired by the video input processing module to obtain at least four different video sources, and the output of the video sources is finished through five different output interfaces on the master control processor, so that the first HDMI interface unit, the second HDMI interface unit, the third HDMI interface unit, the universal serial bus output unit and the liquid crystal display output unit on the recording and broadcasting host equipment can output video signals corresponding to the four different video sources at the same moment, and meanwhile, as the universal serial bus output interface is arranged in the recording and broadcasting host equipment, conference software in an all-in-one machine or a computer can be directly in butt joint with the recording and broadcasting host, the problems that the interfaces of the traditional recording and broadcasting host machine for directly outputting the video signals are fewer, the display equipment connected with the master control processor is difficult to simultaneously display the contents of a plurality of different video sources, and the display output requirements under a teaching scene cannot be met are solved, and the adaptation use scene and the display effect of the recording and broadcasting host equipment are improved.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a recording and playing host device according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a recording and playing host device according to a second embodiment of the present utility model;

fig. 3 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model;

fig. 4 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model;

fig. 5 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model;

Fig. 6 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model;

fig. 7 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

Fig. 1 is a schematic structural diagram of a recording and broadcasting host device according to a first embodiment of the present utility model, which is applicable to a case where a plurality of display devices connected to the recording and broadcasting host device in an interactive teaching process display video pictures of different video sources at the same time. As shown in fig. 1, the recording and playing host device 1 includes: the video processing device comprises a main control processor 10, a video input processing module 11, a first HDMI interface unit 12, a second HDMI interface unit 13, a third HDMI interface unit 14, a universal serial bus output unit 15 and a liquid crystal display output unit 16.

The first HDMI interface unit 12 is connected to the first native HDMI output interface 101 of the main control processor 10; the second HDMI interface unit 13 is connected to the second native HDMI output interface 102 of the main control processor 10; the third HDMI interface unit 14 is connected to the data pulse output interface 103 of the main control processor 10 through the first video conversion unit 17; the universal serial bus output unit 15 is connected with the universal serial bus output interface 104 of the main control processor 10; the lcd output unit 16 is connected to the mobile industry processor output interface 105 of the main control processor 10 through the second video conversion unit 18.

The video input processing module 11 is communicatively connected to the main control processor 10, and is configured to receive a video input signal, convert the video input signal into a target video input signal, and send the target video input signal to the main control processor 10.

The main control processor 10 is configured to process the target video input signal into at least four video sources according to the received video source demand information, and output the at least four video sources through the first HDMI interface unit 12, the second HDMI interface unit 13, the third HDMI interface unit 14, the universal serial bus output unit 15, and the liquid crystal display output unit 16 according to the video source demand information, respectively.

In this embodiment, the main control processor 10 can be specifically understood as a System On Chip (SOC) for integrating, processing, transmitting and managing the audio signal and the video signal received in the teaching interaction scene. The video input processing module 11 may be specifically understood as a data processing conversion module that receives video data from multiple sources outside the recording and playing host device 1 and performs format conversion processing on the received video data to obtain video data meeting the processing requirements of the main control processor 10, and optionally, the video input processing module 11 may be formed by multiple video format conversion chips or switch chips, and the video input processing module 11 may be adaptively set according to the actual input video data format and the video format required by the main control processor 10, which is not limited in the embodiment of the present utility model. The first HDMI interface unit 12, the second HDMI interface unit 13, and the third HDMI interface unit 14 can be specifically understood as one type of HDMI interface provided on the recording and playing host device 1 for outputting audio/video data in a line, wherein the transmitted signal is a signal converted into a transmission-minimized differential form (Transition Minimized Differential Signal, TMDS). The universal serial bus (Universal Serial Bus, USB) output unit 15 is specifically understood as an output interface provided on the recording and playing host device 1, and is used for outputting audio and video data in a USB protocol for docking with USB video devices. The lcd output unit 16 may be specifically understood as an output interface provided on the recording and playing host device 1, and configured to output the video data output by the main control processor 10 in a display protocol corresponding to the lcd for docking of the lcd.

In this embodiment, the first native HDMI output interface 101 and the second native HDMI output interface 102 may be specifically understood as HDMI output interfaces that the host processor 10 itself has and can directly output TMDS signals. The data pulse output interface (Display Prot) 103 is specifically understood as an output interface which the host processor 10 itself has to output signals in the DP protocol. The USB output interface 104 is specifically understood as an output interface which the host processor 10 itself has and which outputs signals according to the USB protocol. The mobile industry processor output interface (Mobile Industry Processor Interface, MIPI) 105 is specifically understood as an output interface that the host processor 10 itself has to output signals in MIPI specification protocol. The first video conversion unit 17 can be understood as a converter for converting the video data of the DP signal type into the HDMI signal to satisfy the output requirement of the third HDMI interface unit 14. The second video conversion unit 18 may be understood as a converter for converting the MIPI signal type of video data into an embedded display port signal to meet the output requirements of the lcd output unit 16. Alternatively, the first video conversion unit 17 and the second video conversion unit 18 may be conversion chips, or may be other types of format conversion elements, which is not limited in the embodiment of the present utility model.

In this embodiment, the video input signal may be specifically understood as video data acquired by the recording host device 1 or input into the recording host device 1 for processing, delivering, and managing by the recording host device 1. The target video input signal may be specifically understood as a video signal obtained by performing format conversion on video input signals of different formats from different sources, and may be input to the main control processor 10 for direct processing. The video source requirement information may be specifically understood as instruction information that is determined according to the actual situation or is input into the recording and playing host device, and is used to instruct the main control processor 10 to process the received video signal. The video source may be specifically understood as a video file that is obtained by the main control processor 10 performing processing such as encoding and decoding on multiple paths of video in the target video input signal, and may be output.

Specifically, in the recording and playing host device 1, the video input processing module 11 is communicatively connected to the main control processor 10. When the video input processing module 11 receives a plurality of different types of video input signals input by a teacher end or a camera end, format conversion is performed on the video input signals by using corresponding conversion chips in the video input processing module 11, and the video signals which can be processed by the main control processor 10 after conversion are determined as target video input signals and sent to the main control processor 10. The main control processor 10 processes the target video input signal according to the video source demand information received in advance, for example, a certain path of video in the target video input signal can be combined to obtain at least four different video sources, meanwhile, according to the video source demand information, the types of video sources respectively output by the first native HDMI output interface 101, the second native HDMI output interface 102, the data pulse output interface 103, the universal serial bus output interface 104 and the mobile industry processor output interface 105 in the main control processor 10 are determined, each video source is output through the corresponding output interface, so that the first HDMI interface unit 12, the second HDMI interface unit 13, the third HDMI interface unit 14, the universal serial bus output unit 15 and the liquid crystal screen output unit 16 realize the output of the corresponding video source, and further, among a plurality of video display devices connected with the first HDMI interface unit 12, the second HDMI interface unit 13, the third HDMI interface unit 14, the universal serial bus output unit 15 and the liquid crystal screen output unit 16, four different video frame information can be output according to the display demand, for example, the video frame display device connected with each interface unit can be respectively output in a panoramic view, a teacher, a special teacher, a student, a special teacher, a special student, a special teacher, or the like.

The embodiment of the utility model provides a recording and broadcasting host device, which comprises: the device comprises a main control processor, a video input processing module, a first HDMI interface unit, a second HDMI interface unit, a third HDMI interface unit, a universal serial bus output unit and a liquid crystal display output unit; the first HDMI interface unit is connected with a first native HDMI output interface of the main control processor; the second HDMI interface unit is connected with a second native HDMI output interface of the main control processor; the third HDMI interface unit is connected with the data pulse output interface of the main control processor through the first video conversion unit; the universal serial bus output unit is connected with a universal serial bus output interface of the main control processor; the liquid crystal screen output unit is connected with the mobile industry processor output interface of the main control processor through a second video conversion unit; the video input processing module is in communication connection with the main control processor and is used for receiving video input signals, converting the video input signals into target video input signals, and sending the target video input signals to the main control processor; the main control processor is used for processing the target video input signal into at least four video sources according to the received video source demand information, and outputting the at least four video sources through the first HDMI interface unit, the second HDMI interface unit, the third HDMI interface unit, the universal serial bus output unit and the liquid crystal display output unit according to the video source demand information. By adopting the technical scheme, the master control processor in the recording and broadcasting host equipment processes the target video input signals acquired by the video input processing module to obtain at least four different video sources, and the output of the video sources is finished through five different output interfaces on the master control processor, so that the first HDMI interface unit, the second HDMI interface unit, the third HDMI interface unit, the universal serial bus output unit and the liquid crystal display output unit on the recording and broadcasting host equipment can output video signals corresponding to the four different video sources at the same moment, and meanwhile, as the universal serial bus output interface is arranged in the recording and broadcasting host equipment, conference software in an all-in-one machine or a computer can be directly in butt joint with the recording and broadcasting host, the problems that the interfaces of the traditional recording and broadcasting host machine for directly outputting the video signals are fewer, the display equipment connected with the master control processor is difficult to simultaneously display the contents of a plurality of different video sources, and the display output requirements under a teaching scene cannot be met are solved, and the adaptation use scene and the display effect of the recording and broadcasting host equipment are improved.

Example two

Fig. 2 is a schematic structural diagram of a recording and playing host device according to a second embodiment of the present utility model. The technical solution of the embodiment of the present utility model is further refined on the basis of the above technical solution, where the video input processing module 11 includes an HDMI input interface unit 111, a third video conversion unit 112, and a switch chip 113, and the structure of the refined recording and playing host device 1 is shown in fig. 2.

The HDMI input interface unit 111 is connected to the mobile industrial processor input interface 106 of the main control processor 10 through the third video conversion unit 112, and is configured to send the HDMI input signal to the third video conversion unit 112 when the HDMI input signal is received, convert the HDMI input signal into a target video input signal by the third video conversion unit 112, and send the target video input signal to the main control processor 10 through the mobile industrial processor input interface 106.

The switch chip 113 is connected with the main control processor 10 through a bus, and is used for integrating each video stream and sending the integrated video stream to the main control processor 10 through the bus when receiving the video stream input by at least one camera.

In the present embodiment, the HDMI input interface unit 111 can be understood as an HDMI interface provided on the video input processing module 11 for receiving an HDMI type signal inputted from the outside. The third video conversion unit 112 can be specifically understood as a converter for converting video data of HDMI signal type into MIPI signal to satisfy the data processing requirements of the main control processor 10. The switch chip 113 may be specifically understood as a network device for forwarding video signals from different sources, and optionally, the switch chip 113 in the embodiment of the present utility model may be an ethernet switch, which is not limited in the embodiment of the present utility model. The mobile industry processor input interface 106 is specifically understood to be an input interface that the host processor 10 itself has to perform signal input in the MIPI specification protocol.

Specifically, when the video input processing module 11 receives the HDMI input signal through the HDMI input interface unit 111, the HDMI input signal is sent to the third video conversion unit 112 for format conversion, and since the third video conversion unit 112 is connected to the mobile industry processor input interface 106 of the main control processor 10, the HDMI input signal of HDMI type needs to be converted into a signal of MIPI form through the third video conversion unit 112, and the video input signal of MIPI form obtained after conversion is determined as the target video input signal, so that the target video input signal can be input into the main control controller 10 through the mobile industry processor input interface 106. For example, the HDMI input signal received by the HDMI input interface unit 111 may be a courseware input by a teacher via a computer or a teaching whiteboard. The switch chip 113 is used for receiving video streams input by at least one camera in the environment where the host device 1 is located, and since the switch chip 113 is connected with the main control processor 10 through only one bus, each received video stream is integrated in the switch chip 113, and the integrated video stream is sent to the main control processor 10 through the bus as a target video input signal. Optionally, the target video input signal input to the master processor 10 via the bus may include more than 8 video streams, which is not limited in this embodiment of the present utility model.

According to the embodiment of the utility model, the video input processing module provided with the HDMI input interface unit, the third video conversion unit and the switch chip is used for processing video input data of different sources by the recording and broadcasting host equipment, so that the applicability of the recording and broadcasting host equipment to different use scenes is improved, and the practicability is improved.

Further, fig. 3 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model, which is further optimized based on the technical solutions of the foregoing alternative embodiments, as shown in fig. 3, the recording and playing host device 1 further includes: an audio processing module 19.

The audio processing module 19 is communicatively connected to the main control processor 10, and is configured to receive an audio input signal, process the audio input signal to obtain an audio output signal, integrate the audio input signal and the audio output signal, and send the integrated audio input signal and the audio output signal to the main control processor 10.

The main control processor 10 is further configured to align the target video input signal with the audio output signal, so that the pictures corresponding to the at least four video sources are aligned with the audio corresponding to the audio output signal.

In this embodiment, the audio processing module 19 can be specifically understood as a module that receives audio data from multiple sources outside the host device 1, and integrates, processes, transmits and outputs the received audio data, so as to cooperate with the main control processor 10 to control the output video source to play audio.

Specifically, the audio processing module 19 is disposed in the recording and playing host device 1 and is in communication connection with the main control processor 10, and meanwhile, the audio processing module 19 can be in communication connection with elements on the recording and playing host device 1, such as audio data acquisition and receiving and audio output, and can implement receiving and acquisition of audio input signals with different sources through each audio data acquisition and receiving element, and can perform filtering, alignment, mixing and other processes on the audio input signals according to actual requirements to obtain audio output signals, so as to ensure that the audio input signals and the audio output signals can be stored, and so as to ensure audio and video synchronization output by the recording and playing host device, the audio input signals and the audio output signals integrated by the audio processing module 19 need to be sent to the main control processor 10. After receiving the audio input signal and the audio output signal, the main control processor 10 can align the target video input signal obtained by itself with the audio output signal, so that the pictures displayed by at least four video sources obtained after processing the target video input signal are aligned with the audio output signal, and the matching and stability of the audio and video displayed by the recording and playing host device 1 in the teaching interaction scene are improved.

Further, fig. 4 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model, which is further refined based on the technical solutions of the foregoing alternative embodiments, as shown in fig. 4, the audio processing module 19 includes: an audio processing unit 191, a first audio input unit 192, a first audio output unit 193, a second audio input unit 194, a third audio input unit 195, a second audio output unit 196, and a microphone receiving unit 197.

The first audio input unit 192, the first audio output unit 193, the second audio input unit 194, the third audio input unit 195, the second audio output unit 196, and the microphone receiving unit 197 are communicatively connected to the audio processing unit 191, respectively.

The first audio input unit 192 is disposed corresponding to the first audio output unit 193, and the second and third audio input units 194 and 195 are disposed corresponding to the second audio output unit 196.

The first audio input unit 192 is configured to collect a first audio input signal, where the first audio input signal is a linear stereo audio signal.

The first audio output unit 193 is configured to output a first audio output signal, which is a linear stereo audio signal.

The second audio input unit 194 is configured to collect a second audio input signal, where the second audio input signal is a linear stereo signal.

The third audio input unit 195 is configured to collect a third audio input signal, where the third audio input signal is one path of HDMI audio signal.

The second audio output unit 196 is configured to output a second audio output signal, where the second audio output signal is a linear stereo audio signal.

The microphone receiving unit 197 is configured to receive a microphone input signal, where the microphone input signal is two paths of audio input signals.

The audio processing unit 191 processes the input first audio input signal, second audio input signal, third audio input signal, and microphone input signal, and outputs the generated first audio output signal and second audio output signal via the first audio output unit 193 and the second audio output unit 196.

The embodiment of the utility model realizes the processing and output of multi-source audio data through the audio processing module which is independently arranged and provided with a plurality of audio input units and audio output units, and simultaneously transmits the integrated audio input signals and audio output signals to the main control processor when carrying out audio processing, so that the main control processor can align the target video input signals obtained by the main control processor with the audio output signals, thereby aligning the pictures displayed by at least four video sources obtained after processing the target video input signals with the audio output signals and improving the matching and stability of the audio and video displayed by the recording and playing host equipment in the teaching interaction scene.

Further, fig. 5 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model, which is further optimized based on the technical solutions of the foregoing alternative embodiments, as shown in fig. 5, the recording and playing host device 1 further includes: and a wired internet of things module 20.

The wired internet of things module 20 is connected with the main control processor 10 through a serial port, and is used for realizing the serial port function through a preset level conversion chip when the whole recording and broadcasting host equipment 1 is in a power-off state.

In this embodiment, the wired internet of things module 20 is specifically understood as a module for supporting connection between other devices and the recording and playing host device 1 through a network cable or ethernet.

Specifically, by arranging the wired internet of things module 20 in the recording and broadcasting host device 1, the wired internet of things module 20 is connected with the main control processor 10 through a serial port, so that when the recording and broadcasting host device is in a complete machine shutdown state, the serial port of the main control processor 10 can realize a corresponding serial port function through a preset level conversion chip. The preset level shift chip may be an RS422 level shift chip or an RS425 level shift chip, which is not limited in the embodiment of the present utility model.

According to the embodiment of the utility model, the cable internet of things module is arranged in the recording and broadcasting host equipment, so that the connection between the recording and broadcasting host equipment and the equipment controlled by the recording and broadcasting host equipment or the equipment to be controlled is realized, the serial port function of the whole machine in the shutdown state is realized, and the relevance between the recording and broadcasting host equipment and each equipment in an application scene is enhanced.

Further, fig. 6 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model, which is further optimized based on the technical solutions of the foregoing alternative embodiments, as shown in fig. 6, the recording and playing host device 1 further includes: wireless internet of things module 21.

The wireless internet of things module 21 is connected with the main control processor 10 through the universal serial bus interface 107, and is used for triggering an interrupt mechanism through the received start-up information when the recording and broadcasting host equipment is in the whole shutdown state, so that the main control processor 10 controls the recording and broadcasting host equipment 1 to be powered on.

The wireless internet of things module 21 is further configured to send the received shutdown information to the main control processor 10 through the universal serial bus interface 107 when the recording and playing host device 10 is in a power-on state, so that the main control processor 10 controls the recording and playing host device 1 to perform shutdown.

The wireless internet of things module 21 is further configured to wirelessly connect with an external sound box, and perform volume control on the external sound box according to the received volume control instruction.

In this embodiment, the wireless internet of things module 21 can be specifically understood as a module supporting the connection between other devices and the recording and playing host device 1 based on the short-distance wireless communication technology and the wide-area wireless communication technology, and the control of other devices on the recording and playing host device 1 can be realized through the wireless internet of things module 21, and the control of other devices connected with the recording and playing host device 1 can be realized through the wireless internet of things module 21. The USB interface 107 is specifically understood as an interface which the host processor 10 itself has, and which performs signal input and output in the USB protocol. The start-up information is specifically understood as a signal which is given by a device connected wirelessly to the recording host device 1 and is used to trigger the recording host device 1 to start up. The shutdown information may be specifically understood as a signal that is given by a device that is wirelessly connected to the recording and playing host device 1 and is used to trigger the recording and playing host device 1 to shutdown. The external sound box can be specifically understood as a sound box which is in a wireless connection with the recording and broadcasting host equipment 1 and can be used for playing the audio data processed by the recording and broadcasting host equipment 1 in an application scene where the recording and broadcasting host equipment 1 is located.

Specifically, a wireless internet of things module 21 is set in the recording and broadcasting host device 1, the wireless internet of things module 21 is connected with the main control processor 10 through a universal serial bus interface 107, and the recording and broadcasting host device 1 can be connected with a plurality of devices in an application scene through the wireless internet of things module 21 based on a short-distance wireless communication technology and a wide-area wireless communication technology. When the recording and broadcasting host device 1 is in the power-off state as a whole, if the wireless internet of things module 21 receives the power-on information given by the connected other devices, an interrupt mechanism is triggered according to the power-on information, and a level signal generated by the trigger interrupt mechanism is sent to the main control processor 10 through the universal serial bus interface 107, so that the main control processor 10 can control the entire system of the recording and broadcasting host device 1 to be powered on. When the recording and broadcasting host device 1 is in the on state, if the wireless internet of things module 21 receives the shutdown information given by the connected other devices, the shutdown information can be sent to the main control processor 10 through the universal serial bus interface 107, and the main control processor 10 can complete the shutdown processing of the recording and broadcasting host device 1 according to the received shutdown information. For example, other devices that give the shutdown information to the wireless internet of things module 21 may be a platform host in an interactive teaching scene, or may be other devices in different scenes, which is not limited in the embodiment of the present utility model. Further, when the external sound box in the usage scenario is included in other devices connected to the wireless internet of things module 21, the volume control command can be sent to the external sound box through the wireless internet of things module 21 based on the volume control command received by the recording and broadcasting host device 1, so as to control the volume of the connected external sound box.

According to the embodiment of the utility model, the wireless internet of things module is arranged in the recording host equipment, so that the wireless connection between the recording host equipment and other equipment in the application scene is realized, the wireless control of the recording host equipment on the other equipment in the application scene is realized, or the recording host equipment can accept the wireless control of the other equipment in the application scene, the control actions of the other equipment in the application scene are not required to be completed through other independent equipment, and the relevance between the recording host equipment and each equipment in the application scene is enhanced.

Further, fig. 7 is a schematic structural diagram of another recording and playing host device according to the second embodiment of the present utility model, which is further optimized based on the technical solutions of the foregoing alternative embodiments, as shown in fig. 7, the recording and playing host device 1 further includes: the network processing module 22.

The network processing module 22 is in communication connection with the main control processor 10, and is used for sending the video source and the audio output signal to the external network for live broadcast or interactive transmission.

The network processing module 22 is further configured to supply power to the IP-based terminal that is in the same intranet as the recording and playing host device 10, and exchange network information with the IP-based terminal.

In this embodiment, the network processing module 22 is specifically understood as a router for supporting the simultaneous operation of two network segments to perform transmission interaction on the data of the recording and playing host device 1.

Specifically, the recording and broadcasting host device 1 further includes a network processing module 22 communicatively connected to the main control processor 10, where the network processing module 22 may be composed of a dual-network segment network, and the external network is configured to integrate each video source obtained by processing the main control processor 10 and the audio output signal received by the main control processor 10, and then send the integrated audio output signal to the external network for live broadcasting or interactive transmission; the intranet can be used for providing a function of supplying power to the terminal based on the IP, and can also provide a network exchange function in the intranet, so that the recording and broadcasting host device 1 can be connected with the terminal based on the IP, and exchange network information with the terminal based on the IP through the intranet.

According to the embodiment of the utility model, the network processing module is arranged in the recording host equipment, so that the recording host equipment can realize the consideration of internal and external data transmission, the live broadcast and external interaction of the determined video source and audio output signals can be realized without external routing, and the use practicability of the recording host equipment is enhanced.

Further, the recording and playing host device 1 may further include a storage module, which is configured to store the target video input signal, the video source, the audio input signal, and the audio output signal generated in the working process of the recording and playing host device 1, and the operation logs of each module and the main control processor 10, where the storage module may be an external mechanical hard disk, may be a cloud end for implementing storage, or may be other types of storage media.

The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. A recording and playing host device, comprising: the device comprises a main control processor, a video input processing module, a first HDMI interface unit, a second HDMI interface unit, a third HDMI interface unit, a universal serial bus output unit and a liquid crystal display output unit;

The first HDMI interface unit is connected with a first native HDMI output interface of the main control processor; the second HDMI interface unit is connected with a second native HDMI output interface of the main control processor; the third HDMI interface unit is connected with the data pulse output interface of the main control processor through a first video conversion unit; the universal serial bus output unit is connected with a universal serial bus output interface of the main control processor; the liquid crystal display output unit is connected with the mobile industry processor output interface of the main control processor through a second video conversion unit;

the video input processing module is in communication connection with the main control processor and is used for receiving video input signals, converting the video input signals into target video input signals in form and sending the target video input signals to the main control processor;

the main control processor is configured to process the target video input signal into at least four video sources according to the received video source demand information, and output the at least four video sources through the first HDMI interface unit, the second HDMI interface unit, the third HDMI interface unit, the universal serial bus output unit and the liquid crystal display output unit according to the video source demand information.

2. The recording and playing host device according to claim 1, wherein the video input processing module comprises an HDMI input interface unit, a third video conversion unit, and a switch chip;

the HDMI input interface unit is connected with a mobile industry processor input interface of the main control processor through the third video conversion unit and is used for transmitting the HDMI input signal to the third video conversion unit when the HDMI input signal is received, performing form conversion on the HDMI input signal by the third video conversion unit to obtain a target video input signal, and transmitting the target video input signal to the main control processor through the mobile industry processor input interface;

the switch chip is connected with the main control processor through a bus and is used for integrating the video streams and sending the integrated video streams to the main control processor through the bus when receiving the video streams input by at least one video camera.

3. The recording and playing host device of claim 1, further comprising: an audio processing module;

the audio processing module is in communication connection with the main control processor and is used for receiving an audio input signal, processing the audio input signal to obtain an audio output signal, integrating the audio input signal and the audio output signal and then sending the integrated audio input signal and the audio output signal to the main control processor;

The main control processor is further configured to align the target video input signal with the audio output signal, so that pictures corresponding to the at least four video sources are aligned with audio corresponding to the audio output signal.

4. The recording and playback host device of claim 3, wherein the audio processing module comprises: the device comprises an audio processing unit, a first audio input unit, a first audio output unit, a second audio input unit, a third audio input unit, a second audio output unit and a microphone receiving unit;

the first audio input unit, the first audio output unit, the second audio input unit, the third audio input unit, the second audio output unit and the microphone receiving unit are respectively in communication connection with the audio processing unit;

the first audio input unit is correspondingly arranged with the first audio output unit, and the second audio input unit and the third audio input unit are correspondingly arranged with the second audio output unit;

the first audio input unit is used for collecting a first audio input signal, and the first audio input signal is a path of linear stereo audio signal;

The first audio output unit is used for outputting a first audio output signal, and the first audio output signal is a path of linear stereo audio signal;

the second audio input unit is used for acquiring a second audio input signal, and the second audio input signal is a path of linear stereo signal;

the third audio input unit is configured to collect a third audio input signal, where the third audio input signal is one path of HDMI audio signal;

the second audio output unit is used for outputting a second audio output signal, and the second audio output signal is a path of linear stereo audio signal;

the microphone receiving unit is used for receiving microphone input signals, and the microphone input signals are two paths of audio input signals;

the audio processing unit is configured to process the input first audio input signal, second audio input signal, third audio input signal, and microphone input signal, and output the generated first audio output signal and second audio output signal via the first audio output unit and the second audio output unit.

5. The recording and playing host device of claim 1, further comprising: a wired internet of things module;

The wired internet of things module is connected with the main control processor through a serial port and is used for realizing the serial port function through a preset level conversion chip when the whole recording and broadcasting host equipment is in a power-off state.

6. The recording and playing host device of claim 1, further comprising: a wireless internet of things module;

the wireless internet of things module is connected with the main control processor through a universal serial bus interface and is used for triggering an interrupt mechanism through received starting information when the recording and broadcasting host equipment is in an overall shutdown state so that the main control processor can control the recording and broadcasting host equipment to be electrified;

the wireless internet of things module is further configured to send the received shutdown information to the master control processor through the universal serial bus interface when the recording and broadcasting host device is in a power-on state, so that the master control processor controls the recording and broadcasting host device to shutdown.

7. The recording and broadcasting host device of claim 6, wherein the wireless internet of things module is further configured to wirelessly connect with an external sound box and perform volume control on the external sound box according to the received volume control command.

8. The recording and playing host device of claim 3, further comprising: a network processing module;

The network processing module is in communication connection with the main control processor and is used for sending each video source and each audio output signal to an external network for live broadcast or interactive transmission.

9. The recording and playing host device according to claim 8, wherein the network processing module is further configured to supply power to an IP-based terminal that is in the same intranet as the recording and playing host device, and exchange network information with the IP-based terminal.

10. The playback host device of any one of claims 1 to 9, wherein the first video conversion unit is a converter for converting a data pulse signal into an HDMI signal; the second video conversion unit is a converter for converting the mobile industry processor signal into an embedded display port signal.