CN211959397U - Signal transmission system - Google Patents
Signal transmission system Download PDFInfo
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- CN211959397U CN211959397U CN202020869025.6U CN202020869025U CN211959397U CN 211959397 U CN211959397 U CN 211959397U CN 202020869025 U CN202020869025 U CN 202020869025U CN 211959397 U CN211959397 U CN 211959397U
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Abstract
The embodiment of the utility model provides a relate to the communication technology field, disclose a signal transmission system, signal transmission system includes: a wireless transmitting device and a wireless receiving device; the wireless transmitting device is used for being connected with a signal source, receiving the signal input by the signal source and transmitting the signal to the wireless receiving device; the wireless receiving device is used for being connected with display equipment, receiving the signal transmitted by the wireless transmitting device and transmitting the signal to the display equipment. The utility model provides a signal transmission system can be when improving the convenience of use, and use cost is low.
Description
Technical Field
The embodiment of the utility model provides a relate to communication technology field, in particular to signal transmission system.
Background
With the increase of high-definition signal sources and display devices, people have an increasing demand for switching different signal source contents to any one display device, and therefore audio and video matrix devices have come into play. The traditional audio and video matrix equipment consists of a matrix main body and a plurality of receivers, and a matrix host is responsible for signal access, matrix switching and signal output. The audio/video matrix on the market is connected with the signal source and the display device by a wired connection (the wired connection includes using an HDMI cable, a coaxial cable, a network cable, an optical fiber cable, etc.).
The inventor finds that at least the following problems exist in the prior art: the matrix host is usually placed together with the signal source, the placement position is fixed, if the display equipment is far away from the signal source, a signal extender needs to be added, and the use convenience is low; the number of receivers of the matrix host is fixed, and when an input signal source or display equipment needs to be increased, the matrix host with more paths (namely, more receivers) needs to be replaced again, so that the use cost is higher.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the present invention is to provide a signal transmission system, which can improve the convenience of use and has a low use cost.
In order to solve the above technical problem, an embodiment of the present invention provides a signal transmission system, including:
a wireless transmitting device and a wireless receiving device; the wireless transmitting device is used for being connected with a signal source, receiving the signal input by the signal source and transmitting the signal to the wireless receiving device; the wireless receiving device is used for being connected with display equipment, receiving the signal transmitted by the wireless transmitting device and transmitting the signal to the display equipment.
Compared with the prior art, the implementation mode of the utility model is provided with the wireless transmitting device and the wireless receiving device, in the transmission process of signals, the wireless transmitting device receives the signals input by the external signal source, then transmits the signals to the wireless receiving device, the wireless receiving device transmits the signals to the display equipment after receiving the signals transmitted by the wireless transmitting device, so that the display equipment plays corresponding video or audio, through the wireless transmission between the wireless transmitting device and the wireless receiving device, the signal transmission between the display equipment and the signal source is not influenced by the distance between the display equipment and the signal source, the situation that the matrix host and the signal source are usually put together and the placing position is fixed, and if the display equipment is far away from the signal source, a signal extender needs to be added in the prior art is avoided, the convenience of the signal transmission system is improved; in addition, when a new signal source or display equipment needs to be added, only a new wireless transmitting device or a new wireless receiving device needs to be correspondingly added, the situation that the whole matrix host needs to be replaced when an input signal source or display equipment needs to be added in the prior art is avoided, and the use cost of the signal transmission system is greatly reduced.
In addition, the number of the wireless transmitting devices is N, each wireless transmitting device corresponds to one signal source, wherein N is an integer greater than 1; the wireless receiving device comprises a transmitting device selection unit for sending a pairing request to one of N of the wireless transmitting devices; the wireless transmitting device receiving the pairing request is used for transmitting the signal input by the signal source corresponding to the wireless transmitting device to the wireless receiving device.
In addition, the number of the wireless transmitting devices is 1, and one wireless transmitting device corresponds to a plurality of signal sources; the wireless receiving device comprises a signal source selection unit, wherein the signal source selection unit is used for sending a signal request to the wireless transmitting device, and the signal request comprises a signal category to be received; and the wireless transmitting device is used for selecting one signal from the N signal sources as a signal source to be input according to the signal category after receiving the signal request, and transmitting the signal input by the signal source to be input to the wireless receiving device.
In addition, the number of the wireless receiving devices is M, each wireless receiving device corresponds to one display device, wherein M is an integer greater than 1.
In addition, the number of the wireless receiving devices is 1, and one wireless receiving device corresponds to a plurality of display devices; the wireless receiving device is used for transmitting the signals to the M pieces of display equipment after receiving the signals transmitted by the wireless transmitting device.
In addition, the wireless transmitting device comprises a signal receiving unit, a transmitting signal processing unit and a wireless transmitting unit; the signal receiving unit is used for receiving the signal input by the signal source; the emission signal processing unit is used for carrying out normalization processing on the signal input by the signal source to obtain a characteristic signal which can be received by the wireless emission unit; the wireless transmitting unit is used for transmitting the characteristic signal to the wireless receiving device.
In addition, the wireless transmitting apparatus further includes a transmitting apparatus control unit; the transmitting device control unit is respectively connected with the signal receiving unit, the transmitting signal processing unit and the wireless transmitting unit, and is used for controlling the signal receiving unit to send the signal input by the signal source to the transmitting signal processing unit and controlling the transmitting signal processing unit to send the characteristic signal to the wireless transmitting unit. Through the arrangement, the control of each functional unit is realized, so that the signal transmission system is more automatic and intelligent.
In addition, the wireless receiving apparatus includes a wireless receiving unit, a received signal processing unit, and a signal output unit; the wireless receiving unit is used for receiving the signal transmitted by the wireless transmitting device; the receiving signal processing unit is used for restoring the signal sent by the wireless transmitting device to obtain an audio/video signal which can be received by the display equipment; the signal output unit is used for inputting the audio and video signals into the display equipment.
In addition, the wireless reception apparatus further includes a reception apparatus control unit; the receiving device control unit is respectively connected with the wireless receiving unit, the received signal processing unit and the signal output unit, and is used for controlling the wireless receiving unit to send the signal transmitted by the wireless transmitting device to the received signal processing unit and controlling the received signal processing unit to send the audio and video signal to the signal output unit. Through the arrangement, the control of each functional unit is realized, so that the signal transmission system is more automatic and intelligent.
In addition, the wireless receiving apparatus further includes a display device control unit; the display equipment control unit is used for receiving a control signal sent by a user and controlling the display equipment according to the control signal.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of a signal transmission system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wireless transmitting device according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wireless receiving apparatus according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a signal transmission system according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a signal transmission system according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a signal transmission system according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the invention. However, the technical solution claimed in the present invention can be realized without these technical details and various changes and modifications based on the following embodiments.
The first embodiment of the present invention relates to a signal transmission system 100, which has a specific structure as shown in fig. 1, including:
a wireless transmitting device 1, a wireless receiving device 2; the wireless transmitting device 1 is used for being connected with the signal source 3, receiving the signal input by the signal source 3 and transmitting the signal to the wireless receiving device 2; the wireless receiving device 2 is used for connecting with the display device 4, receiving the signal transmitted by the wireless transmitting device 1 and transmitting the signal to the display device 4.
Specifically, the Wireless transmitter 1 in the present embodiment transmits a signal to the remote Wireless receiver 2 by using a Wireless transmission technology, which may be WIFI, 5G, Wireless HD, or the like, and it should be understood that the present embodiment does not specifically limit the type of the Wireless transmission technology.
It is to be understood that the display device 4 in this embodiment may be a television, a computer, or the like, and the present embodiment does not specifically limit the type of the display device 4.
Compared with the prior art, the implementation mode of the utility model is provided with the wireless transmitting device 1 and the wireless receiving device 2, in the transmission process of signals, firstly, the wireless transmitting device 1 receives the signals input by the external signal source 3, then transmits the signals to the wireless receiving device 2, the wireless receiving device 2 transmits the signals to the display equipment 4 finally after receiving the signals transmitted by the wireless transmitting device 1, so that the display equipment 4 plays corresponding video or audio, through the wireless transmission between the wireless transmitting device 1 and the wireless receiving device 2, the signal transmission between the display equipment 4 and the signal source 3 is not influenced by the distance between the display equipment and the signal source, the condition that the matrix host and the signal source are usually put together and the placing position is fixed in the prior art, and if the display equipment is far away from the signal source, the signal extender needs to be added is avoided, the convenience of the signal transmission system 100 is improved; in addition, when a new signal source or display equipment needs to be added, only a new wireless transmitting device or a new wireless receiving device needs to be correspondingly added, the situation that the whole matrix host needs to be replaced when an input signal source or display equipment needs to be added in the prior art is avoided, and the use cost of the signal transmission system is greatly reduced.
In this embodiment, there are N wireless transmission devices 1, and each wireless transmission device 1 corresponds to one signal source 3, where N is an integer greater than 1; the wireless reception device 2 includes a transmission device selection unit (not shown) for sending a pairing request to one of the N wireless transmission devices 1; the wireless transmission device 1 that receives the pairing request is configured to transmit a signal input by the signal source 3 corresponding to the wireless transmission device to the wireless reception device 2. It is to be understood that the size of N is not particularly limited in this embodiment, and different wireless transmitting apparatuses 1 may be provided according to the number of signal sources.
More specifically, the number of the wireless receiving apparatuses 2 is M, and each wireless receiving apparatus 2 corresponds to one display device 4, where M is an integer greater than 1.
Referring to fig. 1, taking the value of N as 4 and the value of M as 5 as an example, there are four wireless transmitting devices 1 in fig. 1, which are respectively connected to four signal sources 3; in fig. 1, five wireless receiving apparatuses 2 are respectively connected to five display devices 4, each wireless receiving apparatus 2 is provided with a transmitting apparatus selecting unit, each wireless receiving apparatus 2 can send a pairing request to any one wireless transmitting apparatus 1, specifically, assuming that a user wants to watch a video a on a certain display device 4, and a signal sent by a first signal source 3 is transmitted to the display device 4 to enable the display device 4 to play the video a, the wireless receiving apparatus 2 corresponding to the display device 4 sends the pairing request to the wireless transmitting apparatus 1 corresponding to the first signal source 3, after the wireless transmitting apparatus 1 receives the pairing request, the first signal source 3 outputs a signal to the wireless transmitting apparatus 1 through an HDMI or other interface, and then the wireless transmitting apparatus 1 transmits the signal to the wireless receiving apparatus 2 through a wireless transmission technology, so that the display device 4 plays the video a.
Referring to fig. 2, the wireless transmitting apparatus 1 in the present embodiment includes a signal receiving unit 11, a transmitting signal processing unit 12, and a wireless transmitting unit 13; the signal receiving unit 11 is used for receiving the signal input by the signal source 3; the emission signal processing unit 12 is used for carrying out normalization processing on the signal input by the signal source 3 to obtain a characteristic signal which can be received by the wireless emission unit 13; the wireless transmitting unit 13 is used for transmitting the characteristic signal to the wireless receiving device 2. Specifically, the signal receiving unit 11 in this embodiment includes different interface types (such as HDMI, DVI, SDI, etc.) so as to receive various types of signals, the signal receiving unit 11 sends the received external signal to the transmission signal processing unit 12, the transmission signal processing unit 12 converts the received external signal into a format that can be received by the wireless transmitting unit 13, and finally the wireless transmitting unit 13 completes wireless transmission of the audio/video signal and the control signal.
It should be mentioned that the wireless transmitting device 1 in this embodiment may further include a transmitting device control unit 14, where the control unit 14 is respectively connected to the signal receiving unit 11, the transmitted signal processing unit 12, and the wireless transmitting unit 13 in a communication manner, and is configured to control the signal receiving unit 11 to send the signal input by the signal source 3 to the transmitted signal processing unit 12, and also control the transmitted signal processing unit 12 to send the characteristic signal to the wireless transmitting unit 13. Through the arrangement, the control of the functional units is realized, so that the signal transmission system 100 is more automatic and intelligent.
Referring to fig. 3, the wireless receiving apparatus 2 includes a wireless receiving unit 21, a received signal processing unit 22, and a signal output unit 23; the wireless receiving unit 21 is used for receiving signals transmitted by the wireless transmitting device 1; the received signal processing unit 22 is configured to restore the signal sent by the wireless transmitting apparatus 1 to obtain an audio/video signal that can be received by the display device; the signal output unit 23 is used for inputting the audio and video signal into the display device. Specifically, the wireless receiving unit 21 in this embodiment can receive the wireless signals transmitted by each wireless transmitting device 1 (the control signals in the wireless signals are bidirectional, such as infrared signals, RS-232, and the like); the received signal processing unit 22 can restore the received signal to the original format of the audio/video signal and the control signal; the signal output unit 23 completes the output of audio/video signals, which include different interface types (such as HDMI, DVI, SDI, etc.).
It is worth mentioning that the wireless receiving device 2 further includes a receiving device control unit 24; the receiving device control unit 24 is respectively connected to the wireless receiving unit 21, the received signal processing unit 22 and the signal output unit 23, and is configured to control the wireless receiving unit 21 to send the signal transmitted by the wireless transmitting device 1 to the received signal processing unit 22, and also to control the received signal processing unit 22 to send the audio/video signal to the signal output unit 23. Through the arrangement, the control of the functional units is realized, so that the signal transmission system 100 is more automatic and intelligent.
Note that the wireless reception apparatus 2 further includes a display device control unit 25; the display device control unit 25 is configured to receive a control signal sent by a user, and control the display device according to the control signal. The user can control the pause, play, etc. of the DVD and can also select the input signal source through the display device control unit 25. The display device control unit 25 may be a remote controller (i.e., a user performs control via the remote controller), or may be hardware installed in the display device (i.e., a user performs key selection on the display device), and the present embodiment is not particularly limited thereto.
The second embodiment of the present invention relates to a signal transmission system 200, which is substantially the same as the first embodiment, and mainly differs therefrom in that: in the present embodiment, as shown in fig. 4, there is one wireless transmission device 1, and one wireless transmission device 1 corresponds to a plurality of signal sources 3; the wireless receiving device 2 comprises a signal source selection unit, wherein the signal source selection unit is used for sending a signal request to the wireless transmitting device 1, and the signal request comprises the type of a signal to be received; the wireless transmitting device 1 is used for selecting one signal source from the plurality of signal sources 3 as a signal source to be input according to the signal category after receiving the signal request, and transmitting the signal input by the signal source to be input to the wireless receiving device 2; the wireless receiving apparatus 2 is plural, and each wireless receiving apparatus 2 corresponds to one display device 4.
It can be understood that, the number of the signal sources 3 shown in fig. 4 is 4, and the number of the wireless receiving apparatus 2 and the number of the display devices 4 are 5, and the number of the signal sources 3, the number of the wireless receiving apparatuses 2 and the number of the display devices 4 are not particularly limited in practical application and may be set according to practical requirements.
Compared with the prior art, the implementation mode of the utility model is provided with the wireless transmitting device 1 and the wireless receiving device 2, in the transmission process of signals, firstly, the wireless transmitting device 1 receives the signals input by the external signal source 3, then transmits the signals to the wireless receiving device 2, the wireless receiving device 2 transmits the signals to the display equipment 4 finally after receiving the signals transmitted by the wireless transmitting device 1, so that the display equipment 4 plays corresponding video or audio, through the wireless transmission between the wireless transmitting device 1 and the wireless receiving device 2, the signal transmission between the display equipment 4 and the signal source 3 is not influenced by the distance between the display equipment and the signal source, the condition that the matrix host and the signal source are usually put together and the placing position is fixed in the prior art, and if the display equipment is far away from the signal source, the signal extender needs to be added is avoided, the convenience of the signal transmission system 100 is improved; in addition, when a new signal source or display equipment needs to be added, only a new wireless transmitting device or a new wireless receiving device needs to be correspondingly added, the situation that the whole matrix host needs to be replaced when an input signal source or display equipment needs to be added in the prior art is avoided, and the use cost of the signal transmission system is greatly reduced.
The third embodiment of the present invention relates to a signal transmission system 300, which is substantially the same as the first embodiment, and mainly differs therefrom in that: in the present embodiment, as shown in fig. 5, there are 1 wireless reception apparatus 2, and one wireless reception apparatus 2 corresponds to a plurality of display devices 4; the wireless receiving device 2 is used for transmitting signals to the M display devices 4 respectively after receiving the signals transmitted by the wireless transmitting device 1, wherein M is an integer greater than 1; the wireless transmitting devices 1 are multiple, and each wireless transmitting device 1 corresponds to one signal source 3.
It can be understood that, the signal source 3 and the wireless transmitting apparatus 1 shown in fig. 4 are 4, and the display device 4 is 5, and the number of the signal source 3, the wireless transmitting apparatus 1 and the display device 4 is not particularly limited in practical application, and may be set according to practical requirements.
Compared with the prior art, the implementation mode of the utility model is provided with the wireless transmitting device 1 and the wireless receiving device 2, in the transmission process of signals, firstly, the wireless transmitting device 1 receives the signals input by the external signal source 3, then transmits the signals to the wireless receiving device 2, the wireless receiving device 2 transmits the signals to the display equipment 4 finally after receiving the signals transmitted by the wireless transmitting device 1, so that the display equipment 4 plays corresponding video or audio, through the wireless transmission between the wireless transmitting device 1 and the wireless receiving device 2, the signal transmission between the display equipment 4 and the signal source 3 is not influenced by the distance between the display equipment and the signal source, the condition that the matrix host and the signal source are usually put together and the placing position is fixed in the prior art, and if the display equipment is far away from the signal source, the signal extender needs to be added is avoided, the convenience of the signal transmission system 100 is improved; in addition, when a new signal source or display equipment needs to be added, only a new wireless transmitting device or a new wireless receiving device needs to be correspondingly added, the situation that the whole matrix host needs to be replaced when an input signal source or display equipment needs to be added in the prior art is avoided, and the use cost of the signal transmission system is greatly reduced.
The fourth embodiment of the present invention relates to a signal transmission system 400, and this embodiment is substantially the same as the first embodiment, and mainly differs therefrom in that: in the present embodiment, as shown in fig. 6, there is one wireless transmission device 1, and one wireless transmission device 1 corresponds to a plurality of signal sources 3; the wireless receiving device 2 comprises a signal source selection unit, wherein the signal source selection unit is used for sending a signal request to the wireless transmitting device 1, and the signal request comprises the type of a signal to be received; the wireless transmitting device 1 is used for selecting one signal source from the plurality of signal sources 3 as a signal source to be input according to the signal category after receiving the signal request, and transmitting the signal input by the signal source to be input to the wireless receiving device 2; the number of the wireless receiving devices 2 is 1, and one wireless receiving device 2 corresponds to a plurality of display devices 4; the wireless receiving apparatus 2 is configured to transmit signals to M display devices 4 respectively after receiving the signals transmitted by the wireless transmitting apparatus 1, where M is an integer greater than 1.
Compared with the prior art, the implementation mode of the utility model is provided with the wireless transmitting device 1 and the wireless receiving device 2, in the transmission process of signals, firstly, the wireless transmitting device 1 receives the signals input by the external signal source 3, then transmits the signals to the wireless receiving device 2, the wireless receiving device 2 transmits the signals to the display equipment 4 finally after receiving the signals transmitted by the wireless transmitting device 1, so that the display equipment 4 plays corresponding video or audio, through the wireless transmission between the wireless transmitting device 1 and the wireless receiving device 2, the signal transmission between the display equipment 4 and the signal source 3 is not influenced by the distance between the display equipment and the signal source, the condition that the matrix host and the signal source are usually put together and the placing position is fixed in the prior art, and if the display equipment is far away from the signal source, the signal extender needs to be added is avoided, the convenience of the signal transmission system 100 is improved; in addition, when a new signal source or display equipment needs to be added, only a new wireless transmitting device or a new wireless receiving device needs to be correspondingly added, the situation that the whole matrix host needs to be replaced when an input signal source or display equipment needs to be added in the prior art is avoided, and the use cost of the signal transmission system is greatly reduced.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (10)
1. A signal transmission system, comprising: a wireless transmitting device and a wireless receiving device;
the wireless transmitting device is used for being connected with a signal source, receiving the signal input by the signal source and transmitting the signal to the wireless receiving device;
the wireless receiving device is used for being connected with display equipment, receiving the signal transmitted by the wireless transmitting device and transmitting the signal to the display equipment.
2. The signal transmission system according to claim 1, wherein the number of the wireless transmission devices is N, each of the wireless transmission devices corresponds to one of the signal sources, where N is an integer greater than 1;
the wireless receiving device comprises a transmitting device selection unit for sending a pairing request to one of N of the wireless transmitting devices;
the wireless transmitting device receiving the pairing request is used for transmitting the signal input by the signal source corresponding to the wireless transmitting device to the wireless receiving device.
3. The signal transmission system according to claim 1, wherein the number of said wireless transmission devices is 1, and one of said wireless transmission devices corresponds to a plurality of said signal sources;
the wireless receiving device comprises a signal source selection unit, wherein the signal source selection unit is used for sending a signal request to the wireless transmitting device, and the signal request comprises a signal category to be received;
and the wireless transmitting device is used for selecting one signal source from the plurality of signal sources as a signal source to be input according to the signal category after receiving the signal request, and transmitting the signal input by the signal source to be input to the wireless receiving device.
4. The signal transmission system according to claim 1, wherein the number of the wireless receiving apparatuses is M, each of the wireless receiving apparatuses corresponds to one of the display devices, and M is an integer greater than 1.
5. The signal transmission system according to claim 1, wherein the number of the wireless reception apparatuses is 1, and one wireless reception apparatus corresponds to a plurality of the display devices;
the wireless receiving device is used for transmitting the signals to the M pieces of display equipment after receiving the signals transmitted by the wireless transmitting device.
6. The signal transmission system according to any one of claims 1 to 5, wherein the wireless transmission apparatus includes a signal receiving unit, a transmission signal processing unit, and a wireless transmission unit;
the signal receiving unit is used for receiving the signal input by the signal source;
the emission signal processing unit is used for carrying out normalization processing on the signal input by the signal source to obtain a characteristic signal which can be received by the wireless emission unit;
the wireless transmitting unit is used for transmitting the characteristic signal to the wireless receiving device.
7. The signal transmission system according to claim 6, wherein the wireless transmission device further comprises a transmission device control unit;
the transmitting device control unit is respectively connected with the signal receiving unit, the transmitting signal processing unit and the wireless transmitting unit, and is used for controlling the signal receiving unit to send the signal input by the signal source to the transmitting signal processing unit and controlling the transmitting signal processing unit to send the characteristic signal to the wireless transmitting unit.
8. The signal transmission system according to any one of claims 1 to 5, wherein the wireless reception device includes a wireless reception unit, a received signal processing unit, and a signal output unit;
the wireless receiving unit is used for receiving the signal transmitted by the wireless transmitting device;
the receiving signal processing unit is used for restoring the signal sent by the wireless transmitting device to obtain an audio/video signal which can be received by the display equipment;
the signal output unit is used for inputting the audio and video signals into the display equipment.
9. The signal transmission system according to claim 8, wherein the wireless reception apparatus further comprises a reception apparatus control unit;
the receiving device control unit is respectively connected with the wireless receiving unit, the received signal processing unit and the signal output unit, and is used for controlling the wireless receiving unit to send the signal transmitted by the wireless transmitting device to the received signal processing unit and controlling the received signal processing unit to send the audio and video signal to the signal output unit.
10. The signal transmission system according to claim 8, wherein the wireless reception apparatus further comprises a display device control unit;
the display equipment control unit is used for receiving a control signal sent by a user and controlling the display equipment according to the control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020869025.6U CN211959397U (en) | 2020-05-21 | 2020-05-21 | Signal transmission system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020869025.6U CN211959397U (en) | 2020-05-21 | 2020-05-21 | Signal transmission system |
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| CN211959397U true CN211959397U (en) | 2020-11-17 |
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| CN202020869025.6U Active CN211959397U (en) | 2020-05-21 | 2020-05-21 | Signal transmission system |
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