CN220457482U - Wireless audio and video signal transmission extender - Google Patents
Wireless audio and video signal transmission extender Download PDFInfo
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- CN220457482U CN220457482U CN202320958259.1U CN202320958259U CN220457482U CN 220457482 U CN220457482 U CN 220457482U CN 202320958259 U CN202320958259 U CN 202320958259U CN 220457482 U CN220457482 U CN 220457482U
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- 239000004606 Fillers/Extenders Substances 0.000 title claims abstract description 15
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- 238000004891 communication Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
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- 230000001360 synchronised effect Effects 0.000 description 2
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Abstract
The utility model provides a wireless audio and video signal transmission extender, which comprises a transmitting end and a receiving end, wherein the transmitting end comprises a transmitting end shell and a built-in transmitting end circuit main board, the transmitting end circuit main board comprises an HDMI input interface, a first main control processor, a first control key, a local loop interface and a first wireless transmission module, the receiving end comprises a receiving end shell and a built-in receiving end circuit main board, and the receiving end circuit main board comprises an HDMI output interface, a second control key, a second main control processor and a second wireless transmission module.
Description
Technical Field
The utility model relates to the field of wireless audio and video transmission, in particular to a wireless audio and video signal transmission extender.
Background
HDMI (high definition multimedia interface) is a full digital video and audio transmission interface, which can provide a data transmission bandwidth of up to 18bps, and can transmit uncompressed audio signals and high-resolution video signals. Meanwhile, the signal transmission is not required to be subjected to digital/analog or analog/digital conversion, and the highest quality video signal transmission can be ensured. With the progress and development of electronic technology, the audio and video field gradually develops from the earliest analog signals to digital high definition, new signal formats and new high definition interface types are continuously emerging, so that the connection between devices is problematic, and the problems are mainly represented by multiple interface types, complicated wiring and wiring, and difficult maintenance. The development of wireless technology starts to appear in the market as a few products for wireless transmission of audio and video, so that the problem is expected to be solved. Wireless transmission audio and video products generally comprise a signal transmitting end and a signal receiving end. The signal transmitting end is connected with the information source equipment, the receiving end is connected with the display, and the signal transmitting end and the receiving end are connected by adopting radio frequency.
Although the existing wireless transmission audio and video products solve the problem of wiring, the existing wireless transmission audio and video products still have a plurality of defects due to technical limitations. The most common problems are the following:
first, the image quality is poor and the definition is not high. The high-definition audio and video data has huge quantity, and is usually transmitted after the code rate is reduced by encoding compression before transmission. At present, an H.264 coding mode is commonly adopted, and the picture resolution can only reach 1080PFHD level.
Secondly, the HDMI signals and the control signals need to be transmitted in a long distance, when the multipath signals are processed in the signal receiving device, the signals are easy to interfere, and the displayed images are easy to blur.
Third, the transmission distance is close. Most wireless transmission products on the market have a transmission open distance of 30 meters, and under the condition that environments such as indoor wall penetration and the like are complex, the transmission open distance is usually less than 10 meters, which cannot be achieved under the condition that a few large conference rooms or stations are far away from squares.
Disclosure of Invention
The utility model aims to provide a wireless audio and video signal transmission extender so as to solve the technical problem in the background technology.
In order to achieve the foregoing objective, the present application includes a transmitting end and a receiving end, where the transmitting end includes a transmitting end housing and a built-in transmitting end circuit board, where the transmitting end circuit board includes an HDMI input interface, a first main control processor, a first control key, a local loop interface, and a first wireless transmission module, and the first main control processor is connected to the HDMI input interface, the first control key, the local loop interface, and the first wireless transmission module, respectively; the receiving end comprises a receiving end shell and a built-in receiving end circuit main board, the receiving end circuit main board comprises an HDMI output interface, a second control key, a second main control processor and a second wireless transmission module, and the second main control processor is respectively connected with the HDMI output interface, the second control key and the second wireless transmission module.
In some embodiments, the transmitting end further includes an IR transmitting module, the transmitting end converts the preset electrical signal into an infrared light signal through the IR transmitting module, and the infrared light signal is transmitted to a video source device coupled with the transmitting end through the IR transmitting module to control the video source device.
In some embodiments, the receiving end further comprises an IR receiving module, and the receiving end receives an infrared light signal sent by the remote controller through the IR receiving module and converts the infrared light signal into an electrical signal.
In some embodiments, the first control key is configured to generate a first control instruction according to a latest data transmission request within a specified unit time, and send the first control instruction to the receiving end communicatively connected to the sending end, so as to implement pairing with an SSID of the receiving end, restore initial setting, and switch channels according to the control instruction.
In some embodiments, the second control key is configured to generate a second control instruction according to a latest data transmission request within a specified unit time, and send the second control instruction to a transmitting end communicatively connected to the receiving end, so as to pair with an SSID of the transmitting end, restore initial setting, and switch channels according to the control instruction.
In some embodiments, the wireless communication frequency of the communication association of the first wireless transmission module or the second wireless transmission module is 5.1 GHz-5.8 GHz, and an IEEE 802.11ax wireless transmission protocol is adopted.
In some embodiments, the transmitting end or the receiving end is powered by a DC-DC power supply.
In summary, the present application includes the following beneficial technical effects: through setting up sender and receiver, be connected sender and information source equipment, be connected receiver and playback devices, sender and receiver adopt wireless communication, the signal that information source equipment output can be through wireless transmission for the transmission to the receiver, this scheme adopts the comparatively mature 5G frequency channel of present technique, effectively solve the space limitation problem of traditional information source equipment and player wired transmission mode, support HDMI signal and IR signal synchronous transmission, simultaneously, all support multiple mode input control command at sender and receiver, easy and simple to handle can adapt to more complicated operational environment.
Drawings
Fig. 1 is a block diagram of a wireless transmission system according to an embodiment of the present utility model.
Fig. 2 is a diagram of a wireless 5G band and a corresponding number of channels according to an embodiment of the present utility model.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "disposed" or "connected" to another element, it can be directly or indirectly disposed on the other element. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.
Specific example 1: referring to fig. 1 and 2, the transmitter includes a transmitter 10 and a receiver 30, the transmitter 10 includes a transmitter 10 housing 20 and a built-in transmitter 10 circuit board 10, the transmitter 10 circuit board 10 includes an HDMI input interface 11, a first main control processor 14, a first control key 15, a local loop interface 13 and a first wireless transmission module 16, and the first main control processor 14 is respectively connected with the HDMI input interface 11, the first control key 15, the local loop interface 13 and the first wireless transmission module 16; the receiving end 30 includes a receiving end 30 housing 40 and a built-in receiving end 30 circuit board 30, the receiving end 30 circuit board 30 includes an HDMI output interface 35, a second control key 33, a second main control processor 34, and a second wireless transmission module 31, and the second main control processor 34 is connected to the HDMI output interface 35, the second control key 33, and the second wireless transmission module 31, respectively.
In the present embodiment, the HDMI input interface 11 can be used for: and acquiring the ultra-high definition video from the video source equipment. Wherein the ultra-high definition video may include, but is not limited to: ultra-high definition video in YUV format, ultra-high definition video in RGB format, screen content video in YUV format, or screen content video in RGB format; the high-definition video data may further include, but is not limited to, the following features: the resolution may be: 1080P, 4K, or 8K resolution; the frame rate may be 30FPS, 60FPS, 100FPS, or 120FPS; high dynamic range HDR (High Dynamic Range Imaging).
In this embodiment, the first main control processor 14 adopts an h.265 coding manner, which has the characteristics of extremely low code rate, high quality image, strong fault tolerance capability, strong network adaptability and the like, the bandwidth required by the coded signal in the network transmission process is relatively small, the coded signal is very suitable for wireless network transmission of audio and video signals, the coder packs and transmits the IR transparent auxiliary control signals together while coding, synchronous transmission of the control signals is completed, and after coding is completed, the data stream is packed into a data packet based on the TCP/IP network standard, and then the signal is transmitted through the wireless transmission module.
In this embodiment, the transmitting end 10 further includes an IR transmitting module 12, where the IR transmitting module 12 is installed in the housing of the transmitting end 10, and an output end of the IR transmitting module 12 is connected to an input end of the first main control processor 14; the receiving end 30 further includes an IR receiving module 32, where the IR receiving module 32 is installed in the receiver housing, and an output end of the IR receiving module 32 is connected to an input end of the second main control processor 34, and the IR receiving module 32 can remotely control operations such as switching of contents of a signal source device, switching on and switching off of the signal source device by using a remote controller of the client device.
It can be understood that the receiving end 30 sends a wireless signal, where the wireless signal is an infrared remote control signal sent by the receiving end 30 in response to an infrared remote control device, and the IR receiving module 32 is used to convert the wireless signal into an infrared remote control signal and send the infrared remote control signal to the source device, so that the source device sends an audio/video signal to the sending end 10 in response to the infrared remote control signal; the transmitting end 10 receives the audio/video signal sent by the source device, and sends the video signal to the receiving end 30 through the first wireless transmission module 16, so that the receiving end 30 outputs the audio/video signal to be transmitted to the playing device.
In this embodiment, the first control key is configured to generate a first control instruction according to a latest data transmission request in a specified unit time, and send the first control instruction to a receiving end 30 communicatively connected to the transmitting end 10, so as to implement pairing with an SSID of the receiving end 30, restore initial setting, and channel switching according to the control instruction.
In this embodiment, the working signal flow of the receiving end 30 is opposite to that of the transmitting end 10, the receiving end 30 receives the network data sent by the transmitting end 10 through the second wireless transmission module 31, and then performs error correction, decoding, decryption and decompression on the data, and then restores the RGB/YUV digital video signal and the digital audio signal to output.
The second control key 33 is configured to generate a second control instruction according to a latest data transmission request within a specified unit time, and send the second control instruction to the transmitting end 10 communicatively connected to the receiving end 30, so as to pair with an SSID of the transmitting end 10, restore initial setting, and switch channels according to the control instruction.
In this embodiment, the first control key and the second control key 33 can be used to obtain the man-machine interaction data by selecting the wireless transmission frequency, including a key, a touch screen or a touch backhaul device, generate a control instruction according to the latest data transmission request in a unit time, and send the SSID pairing, the initial setting recovery and the channel switching instruction to the receiving end 30 communicatively connected to the signal transmitting end 10, where the unit time can be set as required, and the specific operation flow is as follows:
1) And pressing the channel switching key of the sending end 10 for 5 seconds, and flashing the WiFi indicator lamp to indicate that the SSID pairing mode is entered.
2) The receiver channel switch key is pressed for 5 seconds long, and the WiFi indicator light flashes to indicate that the SSID pairing mode has been entered.
3) When the SSID pairing is successful, the WiFi indicator lights of the sender 10 and the receiver change from flash to slow flash or always on.
4) And pressing the channel switching key of the transmitting end 10 for 10 seconds for a long time, and flashing a signal indicator lamp to indicate that the mode of restoring the factory setting is entered.
5) And pressing the receiver channel switching key for 10 seconds for a long time, and flashing a signal indicator lamp to indicate that the mode of factory setting restoration is entered.
6) The short pressing of the channel switch button by the transmitting end 10 indicates switching channels, or the short pressing of the channel switch by the receiver after successful pairing.
In this embodiment, the sending end 10 and the receiving end 30 can realize SSID pairing, initial setting recovery and transmission of channel switching instructions only by controlling the keys, and the first wireless transmission module and the second wireless transmission module 31 both adopt 5DBI omni-directional antennas. The wireless communication frequency of the first wireless transmission module and the second wireless transmission module 31 is not 5.1 GHz-5.8 GHz, and the IEEE 802.11ax wireless transmission protocol is adopted.
In some embodiments, the first control key 15, the first host processor 14, the first wireless transmission module 16, the second control key 33, the second host processor 34, and the second wireless transmission module 31 are all powered by a DC-DC power supply.
It should be noted that the first wireless transmission modules all use 5DBI omni-directional antennas, in other words, the 5DBI omni-directional antennas are applied to the 5.8GHz image transmission system and are designed for vertical polarization. The azimuth and elevation beam widths reach a wide coverage of 360 degrees and 55 degrees.
The use of the wireless audio and video signal transmission extender is described below in the following 2 scenarios, respectively.
Application scenario 1:
the scene comprises a sending end and a receiving end.
The first wireless transmission module in the transmitting end can be used for transmitting the received protocol data stream to the receiving end; that is, the transmitting end transmits the received protocol data stream to the receiving end through the first wireless transmission module.
The transmitting end transmits the received protocol data stream to the receiving end based on the 5G network through a first wireless transmission module; it should be noted that, the transmitting end obtains the multimedia data from the video source device through the HDMI input interface, compresses and encapsulates the multimedia data, obtains the protocol data stream, and sends the protocol data stream to the first wireless transmission module.
Application scenario 2:
the scenario may include, but is not limited to: the system comprises a sending end, a first receiving end and a second receiving end.
The first wireless transmission module in the transmitting end can be used for: and respectively transmitting the protocol data stream to the first receiving end and the second receiving end.
That is, the transmitting end transmits the protocol data stream to the first receiving end and the second receiving end respectively through the first wireless transmission module. The first display device coupled with the first receiving end and the second display device coupled with the second receiving end are controlled to respectively display the ultra-high definition video corresponding to the protocol data stream.
Compared with the prior art, the wireless audio and video signal transmission extender provided by the utility model adopts an H.265 coding mode, has the characteristics of extremely low code rate, high quality image, strong fault tolerance, strong network adaptability and the like, and the encoded signal requires relatively less bandwidth in the network transmission process, is suitable for wireless network transmission of audio and video signals, and simultaneously adopts the 5GHz frequency band which is mature in the prior art, adopts a 20MHz channel, realizes real-time wireless transmission of 4K@60HZ ultra-high definition video, adopts communication channel switching, has small channel interference and ensures that the transmission signal is more stable.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. A wireless audio and video signal transmission extender, characterized in that: the transmitting terminal comprises a transmitting terminal shell and a built-in transmitting terminal circuit main board, wherein the transmitting terminal circuit main board comprises an HDMI input interface, a first main control processor, a first control key, a local loop-out interface and a first wireless transmission module, and the first main control processor is respectively connected with the HDMI input interface, the first control key, the local loop-out interface and the first wireless transmission module; the receiving end comprises a receiving end shell and a built-in receiving end circuit main board, the receiving end circuit main board comprises an HDMI output interface, a second control key, a second main control processor and a second wireless transmission module, and the second main control processor is respectively connected with the HDMI output interface, the second control key and the second wireless transmission module.
2. The wireless audio-visual signal transmission extender of claim 1, wherein the transmitting end further comprises an IR transmitting module, the transmitting end converts a preset electrical signal into an infrared light signal through the IR transmitting module, and the infrared light signal is transmitted to a video source device coupled to the transmitting end through the IR transmitting module to control the video source device.
3. The wireless audio/video signal transmission extender of claim 1, wherein the receiving end further comprises an IR receiving module, and the receiving end receives an infrared light signal transmitted by the remote controller through the IR receiving module and converts the infrared light signal into an electrical signal.
4. The wireless audio/video signal transmission extender of claim 1, wherein the first control key is configured to generate a first control command according to a latest data transmission request within a specified unit time, and transmit the first control command to the receiving end communicatively connected to the transmitting end, so as to pair with an SSID of the receiving end, restore an initial setting, and switch channels according to the control command.
5. The wireless audio/video signal transmission extender of claim 1, wherein the second control key is configured to generate a second control command according to a latest data transmission request within a specified unit time, and transmit the second control command to a transmitting end communicatively connected to the receiving end, so as to pair with an SSID of the transmitting end, restore initial setting, and switch channels according to the control command.
6. The wireless audio and video signal transmission extender of claim 1, wherein the wireless communication frequency associated with the first wireless transmission module or the second wireless transmission module is between 5.1GHz and 5.8GHz, and an IEEE 802.11ax wireless transmission protocol is adopted.
7. The wireless audio video signal transmission extender of claim 1, wherein the first wireless transmission module or the second wireless transmission module employs a 5DBI omni-directional antenna.
8. A wireless audio video signal transmission extender as claimed in claim 1 wherein said transmitting or said receiving end is powered by a DC-DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320958259.1U CN220457482U (en) | 2023-04-18 | 2023-04-18 | Wireless audio and video signal transmission extender |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320958259.1U CN220457482U (en) | 2023-04-18 | 2023-04-18 | Wireless audio and video signal transmission extender |
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| Publication Number | Publication Date |
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| CN220457482U true CN220457482U (en) | 2024-02-06 |
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| CN202320958259.1U Active CN220457482U (en) | 2023-04-18 | 2023-04-18 | Wireless audio and video signal transmission extender |
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- 2023-04-18 CN CN202320958259.1U patent/CN220457482U/en active Active
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