CN210670337U - Distributed audio and video independent transmission system - Google Patents
Distributed audio and video independent transmission system Download PDFInfo
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- CN210670337U CN210670337U CN201922035055.7U CN201922035055U CN210670337U CN 210670337 U CN210670337 U CN 210670337U CN 201922035055 U CN201922035055 U CN 201922035055U CN 210670337 U CN210670337 U CN 210670337U
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Abstract
The utility model discloses a distributing type audio frequency and video independent transmission system. The system comprises a switch, a sending module, a receiving module and a client side, wherein the sending module, the receiving module and the client side are connected with the switch through a network. The utility model realizes the independent transmission of audio signals and video signals, can output the audio signals output by any sending module to any receiving module, and can play the audio signals through audio playing equipment; the video signal output by any sending module can also be output to any receiving module and played through the video playing device. Only by slightly improving, the sending module is connected with the audio playing equipment, and the receiving module is connected with the audio signal source, so that the audio signal can be transmitted from the receiving module to the sending module and played at the sending end; the audio signals can also be transmitted between different transmitting ends or different receiving ends and played at the transmitting ends or the receiving ends. The application scene of audio and video transmission is greatly widened.
Description
Technical Field
The utility model belongs to the technical field of audio and video transmission, concretely relates to independent transmission system of distributing type audio and video.
Background
At present, the field of audio and video transmission and monitoring mainly takes video signals as main signals. One common way to transmit audio and video signals is to transmit, receive, and play synchronously, i.e., to watch and listen to their audio. Such as a video signal. The transmission directions of the audio signal and the video signal are from the sending end to the receiving end.
However, in many application scenarios of distributed transmission modes (long-distance transmission, where the distance between a transmitting end and a receiving end, the distance between different transmitting ends, and the distance between different receiving ends are relatively long), the audio signal and the video signal transmitted simultaneously do not require strict synchronization; a video signal also does not require to be played in conjunction with a fixed audio signal, i.e. a video signal may have different dubbing. Although the video signal is still transmitted from the transmitting end to the receiving end, for the audio signal, the transmitting end and the receiving end are not strictly distinguished, and the audio signal can be transmitted from the transmitting end to the receiving end; or can be transmitted from the receiving end to the transmitting end; but also between different senders or between different receivers. Of course, this requires that the audio signal source can be disposed not only at the transmitting end, but also at the receiving end; the audio playing device can be arranged at the receiving end and also can be arranged at the sending end. Obviously, the current audio and video transmission mode is difficult to meet the requirements of the application scenarios.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a distributing type audio frequency and video independent transmission system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a distributed audio and video independent transmission system comprises a switch, a sending module, a receiving module and a client, wherein the sending module, the receiving module and the client are connected with the switch through a network; the number of the sending modules and the number of the receiving modules are both more than or equal to 1; wherein,
the sending module is used for coding the audio signals and/or the video signals output by the audio signal source and/or the video signal source and then respectively outputting the coded audio signals and/or the video signals to the switch;
the receiving module is used for decoding the audio signal and/or the video signal output by the switchboard and outputting the decoded audio signal and/or the decoded video signal to the playing equipment;
the client is used for sending a control instruction to the switch and realizing the switching of the audio and video signals through the switch;
the exchanger is used for switching the audio signal and/or the video signal output by one sending module to one receiving module under the action of the control command sent by the client.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a set up the switch and with the switch passes through sending module, receiving module and the customer end that the network links to each other, has realized audio signal and video signal's independent transmission. Under the control of the client, the audio signal output by any one sending module can be output to any one receiving module and played through the audio playing device; the video signal output by any sending module can also be output to any receiving module and played through the video playing device. The audio signal can be transmitted from the receiving module to the sending module and played at the sending end only by slightly improving, for example, the sending module is connected with the audio playing device, and the receiving module is connected with the audio signal source; the audio signals can also be transmitted between different transmitting ends or different receiving ends and played at the transmitting ends or the receiving ends. The application scene of audio and video transmission is greatly widened.
Drawings
Fig. 1 is a block diagram of a distributed audio/video independent transmission system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an application scenario according to the present invention.
In fig. 1: 1-switch, 2-sending module, 3-receiving module and 4-client.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the utility model provides a distributed audio and video independent transmission system, its component block diagram is shown in fig. 1, the system includes switch 1 and with switch 1 through the sending module 2, receiving module 3 and the customer end 4 that the network links to each other; the number of the sending modules 2 and the number of the receiving modules 3 are both more than or equal to 1; wherein,
the sending module 2 is used for coding the audio signals and/or the video signals output by the audio signal source and/or the video signal source and then respectively outputting the coded audio signals and/or the video signals to the switch 1;
the receiving module 3 is used for decoding the audio signal and/or the video signal output by the switch 1 and outputting the decoded audio signal and/or the decoded video signal to the playing equipment;
the client 4 is used for sending a control instruction to the switch 1 and realizing the switching of audio and video signals through the switch 1;
the switch 1 is used for switching the audio signal and/or the video signal output by a sending module 2 to a receiving module 3 under the action of a control command sent by a client 4.
In this embodiment, the system mainly comprises a switch 1, a sending module 2, a receiving module 3 and a client 4. Since the system is a distributed system, the distance between modules can be very large, such as in different cities. In order to realize long-distance transmission, the exchanger 1 is respectively connected with the sending module 2, the receiving module 3 and the client 4 through a network. Although only 1 transmitting module 2 and 1 receiving module 3 are shown in fig. 1, the number of them may be plural, and fig. 2 gives an example of 2 transmitting modules 2 and 2 receiving modules 3. Each module is described separately below.
The sending module 2 is mainly used for coding the input audio and video signals, and sending the audio and video signals to the switch 1 through a network after the audio and video signals are packaged. Therefore, the input terminal of the sending module 2 is generally connected to an audio/video signal source. The signal source can be a computer, and audio and video files are stored in a computer memory; or a camera or a microphone (if the output is analog signals, the analog signals need to be converted into digital signals by an acquisition card) and the like. The sending module 2 may be implemented by a programmable logic controller chip, or may be composed of a microprocessor, a peripheral circuit, and the like.
The receiving module 3 is mainly used for decoding the audio and video signals input by the switch 1 and outputting the decoded signals to audio and video playing equipment for playing. Therefore, the output terminal of the receiving module 3 is generally connected to an audio/video playing device. Similarly, the receiving module 3 may be implemented by a programmable logic controller chip, or may be composed of a microprocessor, a peripheral circuit, and the like. The audio playing device can be a loudspeaker, an earphone and the like; the video playback device can be a variety of video displays.
The client 4 is mainly used to send various control instructions to the switch 1. The client 4 can be realized by a personal computer and sends control instructions through human-computer interaction equipment such as a keyboard, a mouse and the like; of course embedded computers may also be used.
The switch 1 is mainly used for receiving a control instruction sent by the client 4 and realizing switching of audio and video signals. The switch 1 may select an appropriate network switch according to the network type and the number of the transmitting modules 2 and the receiving modules 3.
The audio signal and the video signal of the embodiment are separately and independently transmitted, and a plurality of transmission modes can be combined according to different quantities of the sending module 2 and the receiving module 3, so that the limitation that the audio signal and the video signal are bound together for transmission in the prior art is overcome. Fig. 2 shows a simpler application example, and the number of the sending module 2 and the receiving module 3 is 2. The first audio signal A1 and the first video signal V1 input by the first sending module are switched to the second receiving module and the first receiving module respectively after passing through the switch 1; the second audio signal a2 and the second video signal V2 inputted by the second sending module are switched to the first receiving module and the second receiving module respectively after passing through the switch 1. The audio signals a1 and a2 enable "crossover" transmission.
As an optional embodiment, the sending modules 2 are connected to an audio playing device, and the switch 1 switches, under the action of a control instruction sent by the client 4, an encoded audio signal output by one of the sending modules 2 to another sending module 2 for decoding, and then outputs the decoded audio signal to the audio playing device.
This embodiment provides a technical solution for transmitting audio signals between two transmitting modules 2. The present embodiment requires that the transmission module 2 has not only an encoding function but also a decoding function. In this embodiment, the audio signal is no longer conventionally transmitted from the transmitting end to the receiving end, and the transmitting end can play the audio signal as the receiving end. Thus, there is no strict distinction between transmission and reception for audio signals.
As an optional embodiment of the previous embodiment, the receiving modules 3 are connected to an audio signal source, and the switch 1 switches, under the action of a control instruction sent by the client 4, an encoded audio signal output by one of the receiving modules 3 to one of the sending modules 2 or the other receiving module 3 for decoding, and then outputs the decoded audio signal to the audio playing device.
This embodiment provides a technical solution for transmitting an audio signal from a receiving module 3 to a transmitting module 2 or between two receiving modules 3. The present embodiment requires that the receiving module 3 not only has a decoding function, but also has an encoding function, that is, both the transmitting module 2 and the receiving module 3 have both encoding and decoding functions. In this embodiment, the audio signal can also be transmitted from the receiving end to the transmitting end (in the reverse direction), and the receiving end can also be connected to the audio signal source like the transmitting end. It has further proved that the difference between transmission and reception is already small for audio signals.
The above description is only for the description of several embodiments of the present invention, but the scope of the present invention should not be considered as the protection scope of the present invention, in which all the equivalent changes or modifications or the equal-scale enlargement or reduction etc. made according to the design spirit of the present invention should be considered as falling into the protection scope of the present invention.
Claims (3)
1. A distributed audio and video independent transmission system is characterized by comprising a switch, a sending module, a receiving module and a client, wherein the sending module, the receiving module and the client are connected with the switch through a network; the number of the sending modules and the number of the receiving modules are both more than or equal to 1; wherein,
the sending module is used for coding the audio signals and/or the video signals output by the audio signal source and/or the video signal source and then respectively outputting the coded audio signals and/or the video signals to the switch;
the receiving module is used for decoding the audio signal and/or the video signal output by the switchboard and outputting the decoded audio signal and/or the decoded video signal to the playing equipment;
the client is used for sending a control instruction to the switch and realizing the switching of the audio and video signals through the switch;
the exchanger is used for switching the audio signal and/or the video signal output by one sending module to one receiving module under the action of the control command sent by the client.
2. The distributed audio-video independent transmission system according to claim 1, wherein the sending modules are connected to an audio playing device, and the switch switches the encoded audio signal output by one of the sending modules to another sending module for decoding under the action of a control instruction sent by the client, and then outputs the decoded audio signal to the audio playing device.
3. The distributed audio-video independent transmission system according to claim 2, wherein the receiving modules are connected to an audio signal source, and the switch switches the encoded audio signal output by one of the receiving modules to one of the transmitting modules or the other receiving module for decoding under the action of a control instruction sent by the client, and then outputs the decoded audio signal to the audio playing device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922035055.7U CN210670337U (en) | 2019-11-22 | 2019-11-22 | Distributed audio and video independent transmission system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922035055.7U CN210670337U (en) | 2019-11-22 | 2019-11-22 | Distributed audio and video independent transmission system |
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| CN210670337U true CN210670337U (en) | 2020-06-02 |
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| CN201922035055.7U Active CN210670337U (en) | 2019-11-22 | 2019-11-22 | Distributed audio and video independent transmission system |
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