Wired same-screen device with wireless router
The technical field is as follows:
the invention relates to the technical field of wireless on-screen devices, in particular to a wired on-screen device which has a router function and can transmit wireless WiFi and is provided with a wireless router.
the traditional audio and video playing device (i.e. the av Source) and the display device (i.e. the av Sink) are all connected by wire, the connection is not an ethernet interface, earlier analog signals are transmitted through interfaces such as CVBS or VGA, the distortion is larger, later digital signals are transmitted by using techniques such as HDMI, but cable connection is always available, with the increase of household consumption audio and video devices, more and more cables are provided in the house, the wiring is inconvenient, the appearance is not beautiful, and the reliability is higher, later the HDMI organization proposes the wireless HDMI standard, but has not been realized so far, israeli companies use the analog radio frequency technology to directly modulate audio and video into radio waves, the display device receives the radio waves and demodulates the radio waves, because the digital compression technology is not adopted, the bandwidth occupation is very large, the power consumption is very large, and its high-radiation antenna array is not suitable for household, of course the greatest advantage of this technique is that the signal delay is small. With the progress of chip design and manufacturing technology, the compression and decompression of high-definition video signals can be completed within dozens of milliseconds, which lays a foundation for the wireless screen transmission technology and the appearance of wireless screen receivers.
The wireless on-screen device is a device which can transmit video, audio, pictures and other files in a mobile device to another playing device through a wireless network. In use, the on-screen transmitter output interface is connected to the device input interface to be displayed (for example, using an HDM interface). The transmitter should carry an APP itself. And inserting the on-screen displayer into the display equipment (such as a computer, a television and the like). The mobile phone setting, display and wireless display are opened, the equipment is searched, and the equipment can be connected on the same screen. The same-screen device is widely applied to families and works of people at present. However, the traditional wireless screen sharing device also has certain defects that the traditional screen sharing device does not have the networking function, the emitted AP hotspots are not networked, and a user connects the screen sharing device through a mobile phone to cause the mobile phone to disconnect the network. For example, see patent nos.: 201620232065.3, which discloses a screen sharing device, the technical proposal adopted by the screen sharing device is as follows: the method comprises the following steps: the wireless receiving unit is used for receiving the data from the main control unit, the data processing unit is used for processing the data, the data output unit is used for outputting the data, and the serial port control unit is used for controlling the output equipment. The technical scheme is a basic technology of the same-screen device, and does not solve the problem that the same-screen device cannot be networked. In addition, see patent application nos.: 201610077632.7, which discloses a method and a terminal for the same screen. The technical scheme also does not solve the problem that the same-screen device cannot be networked.
The invention content is as follows:
the invention aims to overcome the defects of the prior art and provides a wired screen sharing device with a wireless router, wherein the screen sharing device also has the function of the wireless router.
In order to solve the technical problems, the invention adopts the following technical scheme: a wired screen sharing device with a wireless router comprises a main control unit, a wired network interface, a network receiver, a power interface, a storage unit, a video output interface, an audio output interface and a wireless transmission unit, wherein the wired network interface, the network receiver, the power interface, the storage unit, the video output interface, the audio output interface and the wireless transmission unit are connected with the main control unit; the wired network interface receives the data transmitted by the network, transmits the received network data to the main control unit through the network receiver, and transmits the data to the wireless transmission unit after the data is converted by the main control unit.
Further, in the above technical solution, the power interface adopts a 5V/2A Micro USB type interface, and supplies power to the main control unit through the power interface.
Further, in the above technical solution, the wired network interface adopts an RJ45 interface, and the RJ45 interface is connected to the main control unit through a network receiver.
Further, in the above technical solution, the video output interface adopts any one or a combination of the following interfaces: HDMI interface, VGA interface.
Further, in the above technical solution, the audio output interface is an earphone interface.
Furthermore, in the above technical solution, the on-screen device is further provided with a key, and the key is connected with the main control unit.
Further, in the above technical solution, the storage unit includes a DDR for storing data when the program runs and a flash for storing a code.
Further, in the foregoing technical solution, the main control unit includes a video decoding unit and an audio decoding unit.
Further, in the above technical solution, the CPU includes a video decoding unit and an audio decoding unit, the video decoding unit receives video data, performs video decoding, and then sends the video data to the HDMI/VGA interface output signal, and the audio decoding unit receives audio data, performs audio decoding, and then sends the audio data to the audio output interface output signal.
The invention can be applied to mobile terminal equipment such as mobile phones, flat panels and the like, not only has the function of the existing same screen device, but also has the function of wireless routing.
Description of the drawings:
FIG. 1 is a circuit configuration diagram of the same screen device of the present invention
The specific implementation mode is as follows:
the embodiments of the present invention will be further described with reference to the following detailed description and accompanying drawings.
As shown in fig. 1, the present invention is a wired co-screen device with a wireless router, the co-screen device comprising: the main control unit 10, the wired network interface 11, the network receiver 12, the power interface 21, the storage unit, the video output interface 61, the audio output interface 71 and the wireless transmission unit. The wired network interface 11 receives data transmitted by a network, transmits the received data to the main control unit 10 through the network receiver 12, and transmits the data to the WiFi module 81 in the wireless transmission unit after being converted by the main control unit 10, and the WiFi module 81 further has a WiFi antenna 82. The main control unit 10 of the present invention adopts a CPU with model number RK 3036.
Specifically, the power interface 21 is a 5V/2A Micro USB type interface, and the power is supplied to the main control unit 10 through the power interface 21.
The wired network interface 11 adopts an RJ45 interface, and the RJ45 interface 11 is connected with the main control unit 10 through a network receiver 12.
The video output interface 61 adopts any one or a combination of the following interfaces: HDMI interface, VGA interface.
The audio output interface 61 is a headphone interface.
The on-screen device is also provided with a key 51, and the key 51 is connected with the main control unit 10.
The memory unit includes a DDR 41 for storing data and a flash 31 for storing code when the program is run.
The main control unit 10 includes a video decoding unit and an audio decoding unit.
The principle of the invention is as follows: the RJ45 network port interface is through the net twine, and network data receives via network receiver 12, sends to wiFi module 81 after main control unit 10 conversion, and the IP address is unified management and distribution by wiFi module 81 to wireless wiFi signal is launched by wiFi antenna 82 of wiFi module 81. After mobile terminal equipment such as a mobile phone, a tablet and the like is connected with the WiFi signal, the mobile terminal equipment not only can be connected with the Internet and use a same-screen device as a router, but also can project a mobile terminal screen onto a display; the HDMI/VGA interface 61 can select which interface is used as an output interface to be connected to a display according to actual conditions; the audio output interface 71 can be connected with an external earphone to listen to the audio information sent by the main control unit 10; the key 51 is a physical key, a short press is used for switching a 2.4G/5.8G signal mode of the WiFi module 81, and a long press is used for restoring factory settings; the DDR 41 is used for storing data when a program runs; the flash 31 is used for storing codes; after the data processing of the CPU 10, the WiFi module 81 sends a WiFi signal through the WiFi antenna 82, and the mobile terminal can connect the WiFi signal and project the content of the mobile terminal to the display through the HDMI/VGA interface 61 of the same screen device. After the same screen device is plugged with a network cable, the WiFi signal sent by the WiFi module 81 has a network access function, which is equivalent to a wireless router.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, and those skilled in the art may make modifications and variations within the spirit of the present invention, and all modifications, equivalents and modifications of the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.