Recording and broadcasting host and recording and broadcasting system

Abstract

The embodiment of the invention discloses a recording and broadcasting host and a recording and broadcasting system, and the recording and broadcasting host is additionally provided with a sound mixing circuit, a storage battery and a plurality of switching circuits on the basis of an existing recording and broadcasting host, and carries out the transmission of sound source signals through different channels in different power supply states. In a commercial power supply state, through switching of the switching circuit, sound sources accessed by the audio interfaces are transmitted to the audio processing circuit for sound mixing, and the sound sources are sent to the audio output interface by the audio processing circuit and output to external sound production equipment for playing. When the mains supply is cut off and external sound production equipment needs to be used for sound amplification, power can be supplied through the storage battery, and sound sources accessed into the audio interfaces are transmitted to the sound mixing circuit for sound mixing through switching of the switching circuit and are transmitted to the audio output interface through the sound mixing circuit to be output to the external sound production equipment for playing. In a recording and broadcasting classroom, through switching of various switching circuits, sound amplification can be realized with as accurate energy consumption as possible according to various use requirements.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of media devices, and in particular to a recording and broadcasting host and a recording and broadcasting system. Background Art

[0002] Recording and broadcasting equipment is increasingly used in teaching scenarios. It is mainly to collect different audio and video signals to realize the recording and transmission of audio information in teaching scenarios. Among them, audio signals include teacher area audio, student area audio, courseware audio, etc. Classroom speakers are becoming more and more popular as a way to replace high-pitched sound and increase teaching experience.

[0003] Generally speaking, in a recording and broadcasting classroom equipped with both speakers and a recording and broadcasting host, the audio source devices such as the teaching all-in-one machine and the teacher's handheld wireless microphone that output the audio in the courseware as a linear audio signal can all be used as the terminal devices used by the recording and broadcasting host as the audio source. These terminal devices need to be connected to the recording and broadcasting host by wired or wireless means. The clip-on wireless microphone includes three wireless devices - two wireless microphones and a wireless audio receiver. Generally, the built-in wireless audio receiver is built into the recording and broadcasting host. All audio input sources are mixed by the built-in audio processing unit of the recording and broadcasting host and then connected to the speaker by the LINE OUT of the recording and broadcasting host to realize local sound amplification. In order to realize local sound amplification, the recording and broadcasting host must be in a normal power supply working state. However, in actual use, since the classroom does not need to use the recording and broadcasting host in every class, from the perspective of energy saving, the recording and broadcasting host is usually turned off or powered off. When the recording and broadcasting host is turned off, the audio cannot be transferred to the speakers through the recording and broadcasting host for external playback, so the teacher cannot use the sound reinforcement when giving a lecture, which to a certain extent causes the hardware equipment to be idle; or in order to use the speakers, the recording and broadcasting host needs to be turned on in non-recording scenarios, resulting in a waste of resources. Overall, the energy efficiency cost of the existing recording and broadcasting classroom is relatively high. Summary of the invention

[0004] The present invention provides a recording and broadcasting host and a recording and broadcasting system to solve the technical problem of high energy efficiency cost in existing recording and broadcasting classrooms.

[0005] In a first aspect, an embodiment of the present application provides a recording and broadcasting host, including multiple audio input components, multiple input switching circuits, a mixing circuit, an audio processing circuit, an output switching circuit, a switching control circuit, an audio output interface, a battery, and a charging circuit;

[0006] Each audio input component is used to access a different audio source, and the output end of each audio input component is respectively connected to the input end of a different input switching circuit, and each input switching circuit includes a first forwarding end and a second forwarding end, each first forwarding end is respectively connected to a different first input end of the mixing circuit, and each second forwarding end is respectively connected to a different second input end of the audio processing circuit;

[0007] The first output terminal of the mixing circuit is connected to the first signal input terminal of the output switching circuit, and is used to process the audio signal received through the first input terminal to obtain a first mixed signal, and output the first mixed signal through the first output terminal;

[0008] The second output terminal of the audio processing circuit is connected to the second signal input terminal of the output switching circuit, and is used to process the audio signal received through the second input terminal to obtain a second mixed signal, and output the second mixed signal through the second output terminal;

[0009] The control end of the switching control circuit is connected to the controlled end of the input switching circuit and the controlled end of the output switching circuit, and is used to conduct the second forwarding end and the corresponding second input end, the second output end and the second signal input end when the mains power supply is detected; and is used to conduct the first forwarding end and the corresponding first input end, the first output end and the first signal input end when the battery power supply is detected;

[0010] The signal output end of the output switching circuit is connected to the audio output interface, and the audio output interface is used to connect to an external sound device;

[0011] The audio processing circuit is powered by the mains, the storage battery is used to supply power to power-consuming devices other than the audio processing circuit when the mains is disconnected, and the charging circuit is used to charge the storage battery.

[0012] In a second aspect, an embodiment of the present application provides a recording and broadcasting system, including the recording and broadcasting host of the first aspect.

[0013] In the above-mentioned recording and broadcasting host and recording and broadcasting system, the recording and broadcasting host is newly equipped with a mixing circuit, a battery and a plurality of switching circuits, and the audio source signal is transmitted through different channels under different power supply states. Under the mains power supply state, by switching the switching circuit, the sound sources connected to each audio interface are transmitted to the audio processing circuit for mixing, and are sent by the audio processing circuit to the audio output interface for output to the external sound device for playback. When the mains power is disconnected and an external sound device is needed for sound amplification, it can be powered by a battery, and by switching the switching circuit, the sound sources connected to each audio interface are transmitted to the mixing circuit for mixing, and are sent by the mixing circuit to the audio output interface for output to the external sound device for playback. In the recording and broadcasting classroom, by switching various switching circuits, sound amplification can be achieved with the most accurate energy consumption possible according to various usage requirements, effectively reducing the energy efficiency cost of the recording and broadcasting classroom. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a recording and broadcasting host provided in an embodiment of the present application.

[0015] Figure 2 The figure is a schematic diagram of the structure of an existing recording and broadcasting host.

[0016] Figure 3 A schematic diagram of the structure of another recording and broadcasting host provided in an embodiment of the present application.

[0017] Figure 4 for Figure 1 The diagram shown is a circuit connection diagram of the recording and broadcasting host when it is powered by AC power.

[0018] Figure 5 for Figure 1 The diagram shown is a circuit conduction diagram of the recording and broadcasting host when powered by a battery. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0020] It should be noted that the present application specification does not enumerate all optional implementation modes. After reading the present application specification, those skilled in the art should be able to understand that as long as the technical features do not contradict each other, any combination of the technical features can constitute an optional implementation mode.

[0021] like Figure 2As shown, in the existing recording and broadcasting host 20, there are multiple audio input components, such as a first wired audio interface 221 and a second wired audio interface 223 for accessing multiple wired audio sources (such as a teaching all-in-one machine, a handheld microphone receiver), and a wireless audio receiving module 222 for multiple wireless audio sources (such as a clip-on wireless microphone). The audio signals received from all audio sources are given to the audio processing circuit 210 in the recording and broadcasting host 20 for mixing processing under the mains power supply state, and the final processed mixed audio is sent to the external sound device through the audio output interface 230 for playback. In this process, only when the recording and broadcasting host 20 is in the power-on working state can the audio be played through the external sound device. In fact, the main function of the recording and broadcasting host 20 is recording and broadcasting teaching. Recording and broadcasting teaching is an application scenario with a relatively small proportion in daily teaching. If the recording and broadcasting host 20 is not started for non-recording and broadcasting teaching, the function of the hardware device will be idle, and it cannot meet the use requirements of the teaching scene where amplification is required; if the recording and broadcasting host 20 is started every time there is a need for amplification, unnecessary energy consumption will be generated. Overall, the energy efficiency cost of using recording-related hardware in recording classrooms is relatively high.

[0022] In response to the above technical problems, this solution proposes a recording and broadcasting host and a recording and broadcasting system, in which the recording and broadcasting host adds a mixing circuit, a battery and multiple switching circuits, and transmits the audio source signal through different channels under different power supply states. Under the mains power supply state, by switching the switching circuit, the sound sources connected to each audio interface are transmitted to the audio processing circuit for mixing, and are sent by the audio processing circuit to the audio output interface to be output to the external sound device for playback. When the mains power is disconnected and an external sound device needs to be used for sound amplification, it can be powered by a battery, and by switching the switching circuit, the sound sources connected to each audio interface are transmitted to the mixing circuit for mixing, and are sent by the mixing circuit to be output to the external sound device for playback. In the recording and broadcasting classroom, by switching various switching circuits, sound amplification can be achieved with the most accurate energy consumption possible for various usage needs.

[0023] The following is a detailed description of the various embodiments of the present invention.

[0024] Please refer to Figure 1, a recording and broadcasting host 10 provided in an embodiment of the present application includes: multiple audio input components (for example, a first wired audio interface 121 and a second wired audio interface 123 for multiple wired audio sources, and a wireless audio receiving module 122 for a wireless audio source), multiple input switching circuits (for example, a third audio switching circuit 141 corresponding to the first wired audio interface, a second audio switching circuit 142 corresponding to the wireless audio receiving module 122, and a first audio switching circuit 143 corresponding to the second wired audio interface), a mixing circuit 150, an audio processing circuit 110, an output switching circuit ( Figure 1 In the figure, the fourth audio switching circuit 144 is defined according to the switching function), the switching control circuit 170, the audio output interface 130, the battery 161 and the charging circuit 162.

[0025] exist Figure 1 In the recording and broadcasting host 10 shown, each audio input component (the first wired audio interface 121, the second wired audio interface 123 and the wireless audio receiving module 122) is used to access a different audio source, and the output end of each audio input component is respectively connected to the input end of a different input switching circuit (the third audio switching circuit 141, the second audio switching circuit 142 and the first audio switching circuit 143), and each input switching circuit includes a first forwarding end and a second forwarding end, each first forwarding end is respectively connected to a different first input end on the mixing circuit 150, and each second forwarding end is respectively connected to a different second input end on the audio processing circuit 110.

[0026] The first output end of the mixing circuit 150 is connected to the first signal input end of the output switching circuit (ie, the fourth audio switching circuit 144), and is used to process the audio signal received through the first input end to obtain a first mixed signal, and output the first mixed signal through the first output end.

[0027] The second output end of the audio processing circuit 110 is connected to the second signal input end of the output switching circuit (ie, the fourth audio switching circuit 144), and is used to process the audio signal received through the second input end to obtain a second mixed signal, and output the second mixed signal through the second output end.

[0028] The control end of the switching control circuit 170 is connected to the controlled end of the input switching circuit (the third audio switching circuit 141, the second audio switching circuit 142 and the first audio switching circuit 143) and the controlled end of the output switching circuit (i.e., the fourth audio switching circuit 144), and is used to turn on the second forwarding end and the corresponding second input end, as well as the second output end and the second signal input end when the AC power supply is detected; and to turn on the first forwarding end and the corresponding first input end, as well as the first output end and the first signal input end when the battery 161 is detected to be powering the circuit.

[0029] The signal output end of the output switching circuit (ie, the fourth audio switching circuit 144 ) is connected to the audio output interface 130 , and the audio output interface 130 is used to connect to an external sound device.

[0030] The audio processing circuit 110 is powered by the mains, the battery 161 is used to supply power to power consuming devices other than the audio processing circuit when the mains is disconnected, and the charging circuit 162 is used to charge the battery 161. The battery 161 supplies power to the mixing circuit 150 and the wireless audio receiving module 122, for example.

[0031] In the above-mentioned recording and broadcasting host, a mixing circuit, a battery and multiple switching circuits are newly added, and the audio source signal is transmitted through different channels under different power supply states. Under the mains power supply state, by switching the switching circuit, the sound sources connected to each audio interface are transmitted to the audio processing circuit for mixing, and are sent by the audio processing circuit to the audio output interface to be output to the external sound device for playback. When the mains power is disconnected and an external sound device needs to be used for sound amplification, it can be powered by a battery, and by switching the switching circuit, the sound sources connected to each audio interface are transmitted to the mixing circuit for mixing, and are sent by the mixing circuit to be output to the external sound device for playback. In the recording and broadcasting classroom, by switching various switching circuits, sound amplification can be achieved with the most accurate energy consumption possible for various usage needs.

[0032] As mentioned above, the switching control circuit 170 can switch the input audio source according to the power supply status of the recording and broadcasting host 10, and finally flow to the internal device that can be operated under the current power supply status for mixing, and switch the channel so that the device that can currently perform mixing will output to the audio output interface 130, thereby completing the established functions with accurate energy consumption under different power supply states, that is, efficiently utilizing the hardware and avoiding unnecessary energy consumption. On the whole, it can achieve amplification with the most accurate energy consumption possible for various usage requirements. Please refer to Figure 4 and Figure 5 , which have three arrow line thicknesses. Figure 4 The thickest arrow indicates that the battery 161 is currently supplying power. The battery 161 needs to supply power to the mixing circuit 150 and the wireless audio receiving module 122. The switching control circuit 170 also controls the conduction state of each switching circuit (including the input switching circuit and the output switching circuit). Figure 4 The second thick arrow line in the figure indicates that the audio signals inputted by all audio sources are finally mixed by the mixing circuit 150 and outputted to the audio output interface 130 through the fourth audio switching circuit 144 so that the external sound device can play the sound. Figure 4 correspond, Figure 5 It is the power supply and signal transmission process under the mains power supply state. The specific implementation process is similar to Figure 4 The states shown are substantially the same. The implementation details of specific mixing and sound playback can adopt a general processing strategy, which will not be repeated here. In the specific implementation process, because the accuracy of sound processing in local sound amplification is relatively low compared to the recording and broadcasting scenario, the mixing circuit 150 can be slightly weaker than the audio processing circuit 110 in processing power to reduce hardware costs. For the audio processing circuit 110, although the specific implementation details of its audio processing in the recording and broadcasting scenario are not described in the embodiments of the present application, it should be understood that it can support the audio processing effect in the recording and broadcasting scenario, at least according to the existing technology, it can support the audio processing effect in the recording and broadcasting scenario.

[0033] It should be noted that Figure 1 , Figure 3 , Figure 4 and Figure 5 It is just an exemplary recording and broadcasting host structure. In the implementation process, the number of wired audio interfaces is at least 2, or more, so as to support more comprehensive external devices and audio input. Correspondingly, the number of wireless audio receiving modules is at least 2 to meet the reception requirements of various and multiple wireless audio sources. According to the wireless signal format of the specific wireless audio source, the wireless audio receiving module is a Bluetooth module or a U-segment module, or it can be a Wi-Fi module.

[0034] In the specific implementation process, details can also be designed, such as integrating the switching control circuit 170 into a microcontroller to reduce the complexity of the circuit and the area of ​​the internal circuit board of the recording and broadcasting host 10. Figure 3 As shown, the recording and broadcasting host 10 also includes a solar panel 163 arranged on the surface of the body. The solar panel 163 is used to charge the battery 161 through the charging circuit 162 to ensure that when the device is not turned on for a long time, the remaining power of the battery 161 is guaranteed by green energy. In addition, a power prompt circuit 180 can also be provided. The power prompt circuit 180 is used to detect and prompt the remaining power of the battery 161 to ensure that the user can accurately view the power status. Specifically, sound and light reminders can be made when the remaining power reaches a low warning value. In addition to external reminders, for the recording and broadcasting host 10, the charging circuit 162 is also used to detect the remaining power of the battery 161, and charge the battery 161 according to the remaining power control to ensure that the power of the battery 161 supports the normal use of the user.

[0035] An embodiment of the present invention further provides a recording and broadcasting system, wherein the recording and broadcasting host includes the recording and broadcasting host in any of the above embodiments and has corresponding beneficial effects.

[0036] The recording and broadcasting system in the embodiment of the present invention includes the recording and broadcasting host in any of the above embodiments, and may also include various types of audio source devices (such as the teaching all-in-one machine, wireless microphone, etc. mentioned above), which are connected to the audio input components corresponding to the recording and broadcasting host in any of the above embodiments according to the corresponding audio output mode, such as the audio output port of the teaching all-in-one machine is connected to the wired audio interface, and the audio output port of the wireless microphone is connected to the wireless audio interface. The recording and broadcasting system in the embodiment of the present invention may also include a speaker, and the audio input port of the speaker is connected to the audio output interface.

[0037] When the recording and broadcasting system in the embodiment of the present invention is used to carry out teaching activities, if it is in the recording state, the recording and broadcasting host is powered by the mains, the audio processing in the recording and broadcasting host is performed by the audio processing circuit, the output end of each audio input component is connected to the audio processing circuit through the switching of the input switching circuit, and the audio signal output by each audio source device is directly sent to the audio processing circuit for processing, and is sent to the speaker by the audio processing circuit to realize on-site sound amplification. Of course, the audio processing circuit also has other audio processing and transmission services for recording in the recording state, which will not be explained separately here.

[0038] When the recording and broadcasting system in the embodiment of the present invention is used to carry out teaching activities, if it is in the normal teaching state, the recording and broadcasting host is powered by the battery, the audio processing in the recording and broadcasting host is performed by the mixing circuit, the output end of each audio input component is connected to the mixing circuit through the switching of the input switching circuit, and the audio signal output by each sound source device is directly sent to the mixing circuit for processing, and is sent to the speaker by the mixing circuit to realize on-site sound amplification. In this way, it is possible to realize that in the normal teaching state, all functions of the recording and broadcasting host do not need to be turned on, and sound amplification can be achieved under precise energy consumption through fine control of the operating state.

[0039] In general, the present application may be implemented in full hardware (e.g., control is implemented by pure circuits), or in the form of an embodiment combining software and hardware (e.g., control is implemented by a microprocessor or by pure circuits). Moreover, if implemented by microprocessor control, the present application may be implemented in the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0040] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0041] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A recording and broadcasting host, characterized in that: include: Multiple audio input components, multiple input switching circuits, a mixing circuit, an audio processing circuit, an output switching circuit, a switching control circuit, an audio output interface, a battery and a charging circuit; Each of the audio input components is used to access a different audio source, and the output end of each of the audio input components is respectively connected to the input end of a different input switching circuit, and each of the input switching circuits includes a first forwarding end and a second forwarding end, each of the first forwarding ends is respectively connected to a different first input end of the mixing circuit, and each of the second forwarding ends is respectively connected to a different second input end of the audio processing circuit; The first output terminal of the mixing circuit is connected to the first signal input terminal of the output switching circuit, and is used to process the audio signal received through the first input terminal to obtain a first mixed signal, and output the first mixed signal through the first output terminal; The second output terminal of the audio processing circuit is connected to the second signal input terminal of the output switching circuit, and is used to process the audio signal received through the second input terminal to obtain a second mixed signal, and output the second mixed signal through the second output terminal; The control end of the switching control circuit is connected to the controlled end of the input switching circuit and the controlled end of the output switching circuit, and is used to conduct the second forwarding end and the corresponding second input end, as well as the second output end and the second signal input end when the mains power supply is detected; Used to conduct the first forwarding end and the corresponding first input end, and the first output end and the first signal input end when it is detected that the battery is supplying power; The signal output end of the output switching circuit is connected to the audio output interface, and the audio output interface is used to connect to an external sound device; The audio processing circuit is powered by the mains, the storage battery is used to supply power to power consuming devices other than the audio processing circuit when the mains is disconnected, and the charging circuit is used to charge the storage battery.

2. The recording and broadcasting host according to claim 1, characterized in that: The multiple audio input components include a wired audio interface and a wireless audio receiving module.

3. The recording and broadcasting host according to claim 2, characterized in that: The number of the wired audio interfaces is at least 2.

4. The recording and broadcasting host according to claim 2 or 3, characterized in that: The number of the wireless audio receiving modules is at least 2.

5. The recording and broadcasting host according to claim 2 or 3, characterized in that: The wireless audio receiving module is a Bluetooth module or a U-band module.

6. The recording and broadcasting host according to any one of claims 1 to 3, characterized in that: The switching control circuit is integrated into a microcontroller.

7. The recording and broadcasting host according to any one of claims 1 to 3, characterized in that: It also includes a solar panel arranged on the surface of the machine body, and the solar panel is used to charge the storage battery through the charging circuit.

8. The recording and broadcasting host according to any one of claims 1 to 3, characterized in that: It also includes a power prompt circuit, which is used to detect and prompt the remaining power of the battery.

9. The recording and broadcasting host according to any one of claims 1 to 3, characterized in that: The charging circuit is also used to detect the remaining power of the battery and control the charging of the battery according to the remaining power.

10. A recording and broadcasting system, characterized in that: It includes the recording and broadcasting host described in any one of claims 1-9.

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