Multifunctional wireless screen projection circuit and wireless screen projection equipment

Abstract

The utility model relates to the technical field of wireless screen projection, discloses a multifunctional wireless screen projection circuit and wireless screen projection equipment, and realizes efficient and flexible processing and adaptive display of various signal sources by integrating a first signal processing sub-circuit and a second signal processing sub-circuit. Specifically, the first signal processing sub-circuit can automatically detect and access at least one path of target signal source and convert the target signal source into a first signal of a unified preset protocol according to the type of the signal source, and then the second signal processing sub-circuit converts the first signal into a second signal meeting different display requirements. And finally, single-signal or multi-signal wireless screen projection display can be realized on the display equipment. Signal access and signal conversion are subjected to sub-module processing by adopting two sub-circuits, so that the signal processing efficiency can be improved while redundant signal interference is reduced; in addition, the circuit can adapt to display requirements of different signals, and flexibility and convenience of screen projection display are improved.

Description

Technical Field

[0001] This utility model relates to the field of wireless screen projection technology, and in particular to a multifunctional wireless screen projection circuit and a wireless screen projection device. Background Technology

[0002] Currently available wireless screen mirroring devices typically use a configuration where one HDMI TX transmitter corresponds to one HDMI RX receiver, or one USB-A TX transmitter corresponds to one HDMI RX receiver, forming a complete point-to-point wireless screen mirroring system. However, such devices have significant limitations: users are restricted by the fixed interfaces, meaning the device can only be used with a single signal source. Users cannot flexibly change the interface, greatly reducing the user experience. Utility Model Content

[0003] This utility model provides a multifunctional wireless projection circuit that is compatible with the access requirements of various interface signal source devices, thereby improving the ease of use and practicality of the multifunctional wireless projection circuit.

[0004] To address the aforementioned technical problems, the first aspect of this utility model discloses a multifunctional wireless screen projection circuit, which includes a first signal processing subcircuit and a second signal processing subcircuit, wherein:

[0005] The signal input terminal of the first signal processing sub-circuit is used to connect to at least one target signal source to be projected onto the screen; the signal output terminal of the first signal processing sub-circuit is communicatively connected to the signal input terminal of the second signal processing sub-circuit; the signal output terminal of the second signal processing sub-circuit is used to connect to the display device to be projected onto the screen.

[0006] The first signal processing sub-circuit is configured to, after detecting the access of at least one of the target signal sources, convert the target signal source into a first signal that matches a preset protocol according to the signal transmission interface corresponding to each target signal source, and transmit all the first signals to the second signal processing sub-circuit.

[0007] The second signal processing sub-circuit is configured to convert the first signal into a second signal adapted to the display requirements of the display device according to the signal transmission interface corresponding to each first signal, and transmit all the second signals to the display device so as to perform signal display on at least one second signal through the display device, wherein the signal display includes single signal display or multi-signal display.

[0008] As an optional implementation, in the first aspect of this utility model, the second signal processing sub-circuit includes a first communication module, a first main control chip, and a first signal interaction module, wherein:

[0009] The first end of the first communication module is communicatively connected to the signal output end of the first signal processing sub-circuit; the second end of the first communication module is electrically connected to the first end of the first main control chip; the second end of the first main control chip is electrically connected to the first end of the first signal interaction module; the second end of the first signal interaction module is used to connect to the display device to be projected.

[0010] The first communication module is used to receive each of the first signals transmitted by the first signal processing sub-circuit, convert the first signal into a serial port protocol signal adapted to the first main control chip, and transmit the serial port protocol signal to the first main control chip.

[0011] The first main control chip is used to perform signal conversion on each serial port protocol signal according to the display requirements of the display device, and transmit the second signal corresponding to the serial port protocol signal to the first signal interaction module;

[0012] The first signal interaction module is used to transmit all the second signals to the display device.

[0013] As an optional implementation, in the first aspect of this invention, the second signal processing sub-circuit further includes a wireless communication module, wherein:

[0014] The third terminal of the first main control chip is electrically connected to the first terminal of the wireless communication module; the second terminal of the wireless communication module is used to receive external wireless communication signals.

[0015] The wireless communication module is used to perform a first wireless communication control through the communication antenna configured accordingly. The first wireless communication control includes receiving a WIFI signal and transmitting the received WIFI signal to the first main control chip. The WIFI signal is used to enable the first main control chip to access a wireless local area network.

[0016] The wireless communication module is further configured to perform a second wireless communication control via the communication antenna, the second wireless communication control including hotspot transmission and / or Bluetooth interaction.

[0017] As an optional implementation, in the first aspect of this invention, the second signal processing sub-circuit further includes a wired communication module, wherein:

[0018] The fourth terminal of the first main control chip is electrically connected to the first terminal of the wired communication module; the second terminal of the wired communication module is used to access the target signal interface;

[0019] The wired communication module is used to access a wired local area network (LAN) signal through the target signal interface and transmit the LAN signal to the first main control chip. The LAN signal is used to enable the first main control chip to access the LAN.

[0020] As an optional implementation, in the first aspect of this utility model, the second signal processing sub-circuit further includes a device data interaction module, wherein:

[0021] The fifth terminal of the first main control chip is electrically connected to the first terminal of the device data interaction module; the second terminal of the device data interaction module is used to connect to an external target interaction device.

[0022] The device data interaction module is used to perform data transmission or power supply with the target interactive device based on OTG technology; the target interactive device is a device that supports OTG function.

[0023] As an optional implementation, in the first aspect of this utility model, the second signal processing sub-circuit further includes a key display module, wherein:

[0024] The sixth terminal of the first main control chip is electrically connected to the first terminal of the button display module; the second terminal of the button display module is used to connect an external button display component.

[0025] The button display module is used to receive button display instructions from the button display component and transmit the button display instructions to the first main control chip;

[0026] The first main control chip is also used to execute key function responses and / or control the display of status indicator lights according to the key display instructions.

[0027] As an optional implementation, in the first aspect of this utility model, the second signal processing sub-circuit further includes a window debugging module, wherein:

[0028] The seventh terminal of the first main control chip is electrically connected to the first terminal of the window debugging module; the second terminal of the window debugging module is used to connect an external window debugging device.

[0029] The window debugging module is used to acquire window debugging information transmitted by the first main control chip and transmit the window debugging information to the window debugging device. The window debugging information is used to perform software debugging on the first main control chip.

[0030] As an optional implementation, in the first aspect of this utility model, the first signal processing sub-circuit includes a second communication module, a second main control chip, and a second signal interaction module, wherein:

[0031] The first end of the second communication module is used to access at least one target signal source to be projected onto the screen; the second end of the second communication module is electrically connected to the first end of the second main control chip; the second end of the second main control chip is electrically connected to the first end of the second signal interaction module; the second end of the second signal interaction module is electrically connected to the first end of the first communication module.

[0032] The second communication module is used to receive all the target signal sources to be projected and transmit all the target signal sources to the second main control chip. All the target signal sources include at least one of HDMI signal source, USB-A signal source and TYPE-C signal source.

[0033] The second main control chip is used to convert each target signal source into a first protocol signal that matches a preset first data transmission protocol according to the signal transmission interface corresponding to each target signal source, and transmit the first protocol signal to the second signal interaction module through the second communication module;

[0034] The second signal interaction module is used to convert each of the first protocol signals into a second protocol signal that matches a preset second data transmission protocol, as a first signal; and is also used to transmit each of the first signals to the first communication module.

[0035] As an optional implementation, in the first aspect of this utility model, the first data transmission protocol includes the SDIO protocol; the second data transmission protocol includes the WIFI 2.4G / 5G protocol.

[0036] The second aspect of this utility model discloses a wireless screen projection device, which includes a device body and a multi-functional wireless screen projection circuit as disclosed in any of the first aspects.

[0037] Implementing this utility model has the following beneficial effects:

[0038] This invention provides a multifunctional wireless projection circuit and a wireless projection device. By integrating a first signal processing sub-circuit and a second signal processing sub-circuit, it achieves efficient and flexible processing and adaptive display of multiple signal sources. Specifically, the first signal processing sub-circuit can automatically detect and connect to at least one target signal source, and convert it into a first signal with a unified preset protocol according to the signal source type. Then, the second signal processing sub-circuit converts the first signal into a second signal adapted to different display requirements, ultimately supporting wireless projection display of single or multiple signals on the display device. That is, the joint processing of the first and second signal processing sub-circuits for different target signal sources enables the circuit to be compatible with and adapt to the projection needs of different target signal sources, improving the circuit's compatibility and versatility. In particular, by using two sub-circuits to process signal access and signal conversion in modules, redundant signal interference can be reduced while improving signal processing efficiency. In addition, the circuit can adapt to the display requirements of different signals, improving the flexibility and convenience of projection display, and thus increasing the stickiness of the circuit. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of a multifunctional wireless projection circuit disclosed in an embodiment of this utility model;

[0041] Figure 2 This is a schematic diagram of another multifunctional wireless projection circuit disclosed in an embodiment of this utility model;

[0042] Figure 3 This is a schematic diagram of the structure of the second signal processing sub-circuit disclosed in an embodiment of this utility model;

[0043] Figure 4 This is a schematic diagram of the structure of the first communication module disclosed in this embodiment of the utility model;

[0044] Figure 5 This is a schematic diagram of the structure of the first main control chip disclosed in this embodiment of the utility model;

[0045] Figure 6 This is a schematic diagram of the structure of the first signal interaction module disclosed in this embodiment of the present utility model;

[0046] Figure 7 This is a schematic diagram of the structure of the second communication module disclosed in an embodiment of this utility model;

[0047] Figure 8 This is a schematic diagram of the structure of the second main control chip disclosed in an embodiment of the present utility model;

[0048] Figure 9 This is a schematic diagram of the structure of the second information interaction module disclosed in this embodiment of the utility model;

[0049] Figure 10 This is a schematic diagram of the structure of a wireless screen projection device disclosed in an embodiment of this utility model. Detailed Implementation

[0050] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0051] It should be noted that, unless otherwise expressly specified and limited, the term "electrical connection" in the specification, claims, and accompanying drawings of this utility model should be interpreted broadly. For example, it can be a fixed electrical connection, a detachable electrical connection, or an integral electrical connection; it can be a mechanical electrical connection, an electrical-electrical connection, or a connection that allows for communication; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements. Furthermore, the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] Example 1

[0053] Please see Figure 1 , Figure 1 This is a schematic diagram of a multifunctional wireless screen projection circuit disclosed in an embodiment of this utility model. This circuit can be applied to wireless screen projection devices, but this utility model embodiment does not limit its application. Figure 1 As shown, the multi-functional wireless projection circuit includes a first signal processing sub-circuit 10 and a second signal processing sub-circuit 20, wherein:

[0054] The signal input terminal of the first signal processing sub-circuit 10 is used to connect to at least one target signal source to be projected onto the screen; the signal output terminal of the first signal processing sub-circuit 10 is communicatively connected to the signal input terminal of the second signal processing sub-circuit 20; the signal output terminal of the second signal processing sub-circuit 20 is used to connect to the display device to be projected onto the screen.

[0055] The first signal processing sub-circuit 10 is used to, after detecting the access of at least one target signal source, convert the target signal source into a first signal that matches a preset protocol according to the signal transmission interface corresponding to each target signal source, and transmit all the first signals to the second signal processing sub-circuit 20.

[0056] The second signal processing sub-circuit 20 is used to convert the first signal into a second signal that adapts to the display requirements of the display device according to the signal transmission interface corresponding to each first signal, and transmit all the second signals to the display device so as to perform signal display on at least one second signal through the display device. The signal display includes single signal display or multi-signal display.

[0057] It is evident that implementation Figure 1 The described multi-functional wireless projection circuit integrates a first signal processing sub-circuit and a second signal processing sub-circuit to achieve efficient and flexible processing and adaptive display of multiple signal sources. Specifically, the first signal processing sub-circuit can automatically detect and connect to at least one target signal source, and convert it into a first signal with a unified preset protocol according to the signal source type. Then, the second signal processing sub-circuit converts the first signal into a second signal adapted to different display requirements, ultimately supporting wireless projection display of single or multiple signals on the display device. That is, the joint processing of different target signal sources by the first and second signal processing sub-circuits enables the circuit to be compatible with and adapt to the projection needs of different target signal sources, improving the circuit's compatibility and versatility. In particular, by using two sub-circuits to process signal access and signal conversion in modules, redundant signal interference can be reduced while improving signal processing efficiency. In addition, the circuit can adapt to the display requirements of different signals, improving the flexibility and convenience of projection display, which is conducive to increasing the stickiness of the circuit.

[0058] In an optional embodiment, such as Figure 2 As shown, Figure 2 This is a schematic diagram of another multifunctional wireless projection circuit disclosed in an embodiment of this utility model, as shown below. Figure 2 As shown, the second signal processing sub-circuit 20 includes a first communication module 201, a first main control chip 202, and a first signal interaction module 203, wherein:

[0059] The first end of the first communication module 201 is communicatively connected to the signal output end of the first signal processing sub-circuit 10; the second end of the first communication module 201 is electrically connected to the first end of the first main control chip 202; the second end of the first main control chip 202 is electrically connected to the first end of the first signal interaction module 203; the second end of the first signal interaction module 203 is used to connect to the display device to be projected.

[0060] The first communication module 201 is used to receive each first signal transmitted by the first signal processing sub-circuit 10, convert the first signal into a serial port protocol signal adapted to the first main control chip 202, and transmit the serial port protocol signal to the first main control chip 202.

[0061] The first main control chip 202 is used to perform signal conversion on each serial port protocol signal according to the display requirements of the display device, and transmit the second signal corresponding to the serial port protocol signal to the first signal interaction module 203;

[0062] The first signal interaction module 203 is used to transmit all the second signals to the display device.

[0063] In this optional embodiment, the first communication module, as the starting point of the signal processing chain, is responsible for receiving various first signals from the first signal processing sub-circuit and converting them into serial port protocol signals compatible with the first main control chip. This conversion process not only ensures stable signal transmission but also effectively reduces signal loss and interference during transmission, thereby improving the accuracy and reliability of signal processing.

[0064] In this optional embodiment, the first main control chip, as the core of signal processing, can perform precise signal conversion on each serial port protocol signal according to the specific display requirements of the display device, and generate the corresponding second signal, ensuring that the signal quality and display effect finally displayed on the device reach the best state.

[0065] In this optional embodiment, the first signal interaction module, as the endpoint of the signal processing chain, is responsible for transmitting all second signals to the display device. Through this specially designed first signal interaction module, signal transmission between the wireless projection circuit and the display device can be executed efficiently and stably.

[0066] In this optional embodiment, please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of the second signal processing sub-circuit disclosed in an embodiment of this utility model. It should be noted that... Figure 3 The circuit structure used is illustrated with the example of connecting an HDMI signal. Figure 3 As shown, the first communication module 201 can correspond to the following in practical applications: Figure 3The WIFI module of CDW-B18731B; the first main control chip 202 can be adopted Figure 3 The H313 chip in the middle; the first signal interaction module 203 can correspond to Figure 3 The signal transmission function implemented by the HDMI interface RX receiver.

[0067] In this optional embodiment, for Figure 3 For the circuit structure of the WIFI module of CDW-B18731B, please refer to [link / reference]. Figure 4 , Figure 4 This is a schematic diagram of the structure of the first communication module disclosed in this embodiment of the utility model;

[0068] In this optional embodiment, for Figure 3 Please refer to the circuit structure corresponding to the H313 chip in the text. Figure 5 , Figure 5 This is a schematic diagram of the structure of the first main control chip disclosed in this embodiment of the present invention; wherein, Figure 5 The H313 main control chip circuit shown mainly includes the following functional modules: U18 is a clock generation circuit; UD1, UD2, UD3, and UD4 constitute the dynamic random access memory of the H313 system; UM1 constitutes the memory of the H313 system, mainly storing the main program that can call the system to work normally and for storing data information.

[0069] In this optional embodiment, for Figure 2 Please refer to the circuit structure corresponding to the first signal interaction module 203. Figure 6 , Figure 6 This is a schematic diagram of the structure of the first signal interaction module disclosed in this embodiment of the present invention. Figure 6 The JH1 is an HDMI interface connector. Figure 6 UH1, UH2, DH2, DH3, DH4, DH5, and DH7 are ESD electrostatic protection devices, mainly providing circuit protection for HDMI signals and enhancing circuit reliability.

[0070] As can be seen, in this optional embodiment, by providing an efficient and coordinated signal processing chain, efficient processing and adaptive display of multiple signal sources are achieved, thereby improving the ease of use and reliability of the circuit.

[0071] In another alternative embodiment, such as Figure 2 As shown, the second signal processing sub-circuit 20 further includes a wireless communication module 204, wherein:

[0072] The third terminal of the first main control chip 202 is electrically connected to the first terminal of the wireless communication module 204; the second terminal of the wireless communication module 204 is used to receive external wireless communication signals.

[0073] The wireless communication module 204 is used to perform a first wireless communication control through the communication antenna configured accordingly. The first wireless communication control includes receiving WIFI signals and transmitting the received WIFI signals to the first main control chip 202. The WIFI signals are used to enable the first main control chip 202 to access the wireless local area network.

[0074] The wireless communication module 204 is also used to perform a second wireless communication control via a communication antenna, the second wireless communication control including hotspot transmission and / or Bluetooth interaction.

[0075] In this optional embodiment, by integrating a wireless communication module capable of accessing a wireless local area network, not only are the user's network connection steps simplified, but the network compatibility and data transmission speed of the circuit are also significantly improved, providing a data foundation for a high-definition, real-time screen projection experience.

[0076] In this optional embodiment, the wireless communication module is not limited to Wi-Fi signal reception; it also extends to include diversified wireless communication control capabilities such as hotspot transmission and / or Bluetooth interaction. The hotspot transmission function allows the circuit to create a hotspot for direct connection and data transmission with other devices without external network access, greatly expanding the circuit's application scenarios and ease of use. The Bluetooth interaction function further enhances the circuit's compatibility with other Bluetooth devices, providing users with more diverse connection and interaction options.

[0077] In this optional embodiment, such as Figure 3 As shown, the wireless communication module 204 can correspond to the following in practical applications. Figure 3 The CDW-47822CS features a wireless communication module 204 that implements wireless LAN functionality via an SDIO interface. Furthermore, the module 204 can connect to external Wi-Fi signals via a 2.4G or 5G antenna to achieve wireless LAN capabilities. Additionally, the CDW-47822CS can also function as a wireless router and include Bluetooth, allowing it to broadcast a hotspot and enable other devices to access the internet.

[0078] It is evident that providing a wireless communication module capable of accessing Wi-Fi, compatible with hotspot transmission and Bluetooth transmission not only improves the wireless connection speed and compatibility of the circuit, but also provides users with more diverse connection and interaction options, enhancing the flexibility and convenience of the circuit, and improving its applicability.

[0079] In yet another alternative embodiment, such as Figure 2 As shown, the second signal processing sub-circuit 20 also includes a wired communication module 205, wherein:

[0080] The fourth terminal of the first main control chip 202 is electrically connected to the first terminal of the wired communication module 205; the second terminal of the wired communication module 205 is used to access the target signal interface;

[0081] The wired communication module 205 is used to access the wired local area network signal through the target signal interface and transmit the wired local area network signal to the first main control chip 202. The wired local area network signal is used to enable the first main control chip 202 to access the wired local area network.

[0082] In this optional embodiment, such as Figure 3 As shown, the wired communication module 205 can correspond to the following in practical applications. Figure 3 The EPHY's functional modules / interfaces / ports include an RJ45 interface. The wired communication module 205 is directly connected to the RJ45 interface, and accesses the wired LAN signal through this RJ45 interface to realize the wired network internet access function.

[0083] As can be seen, in this optional embodiment, by introducing a wired communication module capable of accessing a wired network, not only is the data transmission speed and stability of the circuit improved, but users are also provided with more flexible network access options, thus improving the flexibility of the circuit's network access and further enhancing the circuit's applicability.

[0084] In another alternative embodiment, such as Figure 2 As shown, the second signal processing sub-circuit 20 also includes a device data interaction module 206, wherein:

[0085] The fifth terminal of the first main control chip 202 is electrically connected to the first terminal of the device data interaction module 206; the second terminal of the device data interaction module 206 is used to connect to an external target interaction device.

[0086] The device data interaction module 206 is used to perform data transmission or power supply to the target interactive device based on OTG technology; the target interactive device is a device that supports OTG function.

[0087] In this optional embodiment, the target interactive device can be a keyboard, mouse, USB flash drive, or other similar device.

[0088] In this optional embodiment, such as Figure 3 As shown, the data interaction module 206 of this device can correspond to... Figure 3 The device has a USB0 or ​​USB OTG function module / port / interface, and the data interaction module 206 of the device is an OTG upgrade or can realize the data interaction function of USB 2.0.

[0089] In this optional embodiment, the circuit, through a device data interaction module integrated with the first main control chip, can seamlessly connect to and support various target interactive devices with OTG functionality. Whether for data transmission or device power supply, the user simply connects the target device to the circuit via the device data interaction module to easily achieve rapid data exchange or provide stable power support to the target device.

[0090] As can be seen, in this optional embodiment, by providing a data interaction device that can be directly connected to various target interaction devices, the data interaction function of the circuit is expanded, while the convenience and practicality of the data interaction of the circuit are improved.

[0091] In yet another alternative embodiment, such as Figure 2 As shown, the second signal processing sub-circuit 20 also includes a key display module 207, wherein:

[0092] The sixth terminal of the first main control chip 202 is electrically connected to the first terminal of the key display module 207; the second terminal of the key display module 207 is used to connect an external key display component.

[0093] The button display module 207 is used to receive button display commands from the button display component and transmit the button display commands to the first main control chip 202;

[0094] The first main control chip 202 is also used to execute key function responses and / or control the display of status indicator lights according to key display instructions.

[0095] In this optional embodiment, such as Figure 3 As shown, the button display module 207 can correspond to... Figure 3 The GPIO function module / port / interface, further, the button display module 207 can be subdivided into Figure 3 The system includes a KEY submodule and an LED submodule; the GPIO port is used to implement the button function of the KEY submodule and the status indicator function of the LED submodule.

[0096] As can be seen, in this optional embodiment, by integrating the button display module, efficient interaction between the button display component and the first main control chip is achieved, enabling users to directly trigger system function responses through button operation and observe the feedback of status indicator lights in real time. This further expands the interactive functions of the circuit and improves the ease of use and intuitiveness of the user.

[0097] In another alternative embodiment, such as Figure 2 As shown, the second signal processing sub-circuit 20 also includes a window debugging module 208, wherein:

[0098] The seventh terminal of the first main control chip 202 is electrically connected to the first terminal of the window debugging module 208; the second terminal of the window debugging module 208 is used to connect an external window debugging device.

[0099] The window debugging module 208 is used to acquire window debugging information transmitted by the first main control chip 202 and transmit the window debugging information to the window debugging device. The window debugging information is used to perform software debugging on the first main control chip 202.

[0100] In this optional embodiment, such as Figure 3 As shown, the window debugging module 208 can correspond to the following in practical applications. Figure 3 The UART0 function module / port / interface in the middle is used to implement software debugging and window information printing functions through the window debugging module 208.

[0101] As can be seen, in this optional embodiment, by integrating the window debugging module, efficient information interaction between the first main control chip and the external window debugging device is realized, providing an intuitive and convenient interface for software debugging, which is conducive to improving the flexibility and efficiency of circuit development and maintenance.

[0102] In yet another alternative embodiment, such as Figure 2 As shown, the first signal processing sub-circuit 10 includes a second communication module 101, a second main control chip 102, and a second signal interaction module 103, wherein:

[0103] The first end of the second communication module 101 is used to access at least one target signal source to be projected onto the screen; the second end of the second communication module 101 is electrically connected to the first end of the second main control chip 102; the second end of the second main control chip 102 is electrically connected to the first end of the second signal interaction module 103; the second end of the second signal interaction module 103 is electrically connected to the first end of the first communication module 201.

[0104] The second communication module 101 is used to receive all target signal sources to be projected and transmit all target signal sources to the second main control chip 102. All target signal sources include at least one of HDMI signal source, USB-A signal source and TYPE-C signal source.

[0105] The second main control chip 102 is used to convert the target signal source into a first protocol signal that matches the preset first data transmission protocol according to the signal transmission interface corresponding to each target signal source, and transmit the first protocol signal to the second signal interaction module 103 through the second communication module 101.

[0106] The second signal interaction module 103 is used to convert each first protocol signal into a second protocol signal that matches a preset second data transmission protocol, as a first signal; and is also used to transmit each first signal to the first communication module 201.

[0107] In this optional embodiment, the first data transmission protocol includes the SDIO protocol; the second data transmission protocol includes the WIFI 2.4G / 5G protocol.

[0108] In this optional embodiment, please refer to the specific circuit structure of the second communication module 101. Figure 7 , Figure 7 This is a schematic diagram of the structure of the second communication module disclosed in an embodiment of the present invention; wherein, Figure 7 JH01 is an HDMI standard interface male connector used to receive HDMI signals from external computers; Figure 7 UH02, UH03, and UH04 are electrostatic discharge protection circuits, mainly used to protect the HDMI interface JH01 from damage caused by electrostatic discharge.

[0109] In this optional embodiment, please refer to the specific circuit structure of the second main control chip 102. Figure 8 , Figure 8 This is a schematic diagram of the structure of the second main control chip disclosed in this embodiment of the present invention. The second main control chip can be an integrated circuit module T31 or T23 (T23 is fully compatible with T31 ​​circuits), mainly implementing video signal processing, image encoding processing, and basic input / output control signals, etc. Figure 8 U6 in the system is external FLASH storage, which is the memory for the main program that ensures the normal operation of the system. Figure 8 Y1 in the circuit provides the basic clock signal for T31.

[0110] In this optional embodiment, please refer to the specific circuit structure of the second signal interaction module 103. Figure 9 , Figure 9 This is a schematic diagram of the structure of the second signal interaction module disclosed in an embodiment of this utility model. Figure 9 The second signal interaction module 103 shown can convert the received SDIO protocol signal into a WIFI 2.4G / 5G protocol signal and transmit it through the radio frequency antenna (this radio frequency antenna corresponds to...). Figure 9 (AN1 and AN2 in the text).

[0111] As can be seen, in this optional embodiment, by integrating the second communication module, the second main control chip, and the second signal interaction module, efficient reception and protocol conversion of various target signal sources (such as HDMI, USB-A, TYPE-C, etc.) for screen projection are achieved. The second main control chip converts the target signal source into a first protocol signal (such as the SDIO protocol), which is then further converted into a second protocol signal (such as the WIFI 2.4G / 5G protocol) by the second signal interaction module for wireless transmission through the first communication module. This detailed module setup improves the flexibility of signal processing and transmission efficiency, providing users with a more convenient and efficient screen projection experience.

[0112] The working principle of the multifunctional wireless projection circuit in this embodiment of the utility model is as follows:

[0113] In this embodiment of the invention, a second communication module detects in real time whether there is an input from a target signal source. After detecting the input of a target signal source, the second communication module stably receives the signal and filters redundant signals. Then, the accurate target signal source is transmitted to the second main control chip. The second main control chip performs the first-level signal processing before projection on the received target signal source. This first-level signal processing includes conventional video signal processing and signal encoding, and converts the target signal source into an SDIO protocol signal. Then, the second signal interaction module converts the SDIO protocol signal into a Wi-Fi signal that can be transmitted in the form of a Wi-Fi signal. The first signal is a 2.4G / 5G protocol signal. The second signal interaction module then sends this first signal to the receiving end where the display device to be projected is located. At the receiving end, the first communication module receives the signal and converts it into a serial port protocol signal, making the first signal recognizable by the first main control chip. The first main control chip then performs further conversion processing on the serial port protocol signal, converting it into a second signal compatible with the display device to be projected. Finally, the first signal interaction module transmits the second signal to the display device for projection. Furthermore, since the second communication module can access multiple target signal sources, the second signal transmitted by the first signal interaction module is also multi-channel. Therefore, the display device can simultaneously receive multiple second signals. Based on the structure of this multi-functional wireless projection circuit, the display device can perform single-signal or multi-signal display according to the user's actual projection needs.

[0114] Example 2

[0115] Please see Figure 10 , Figure 10This is a schematic diagram of the structure of a wireless screen projection device disclosed in an embodiment of the present invention. The wireless screen projection device includes a main body and any of the multifunctional wireless screen projection circuits as described in Embodiment 1. It should be noted that for a detailed description of the wireless screen projection device, please refer to the specific description of the multifunctional wireless screen projection circuit in Embodiment 1, which will not be repeated in this embodiment.

[0116] It is evident that implementation Figure 10 The described wireless projection device integrates a first signal processing sub-circuit and a second signal processing sub-circuit to achieve efficient and flexible processing and adaptive display of multiple signal sources. Specifically, the first signal processing sub-circuit can automatically detect and connect to at least one target signal source, and convert it into a first signal with a unified preset protocol according to the signal source type. Then, the second signal processing sub-circuit converts the first signal into a second signal adapted to different display requirements, ultimately supporting wireless projection display of single or multiple signals on the display device. That is, the joint processing of different target signal sources by the first and second signal processing sub-circuits enables the circuit to be compatible with and adapt to the projection needs of different target signal sources, improving the circuit's compatibility and versatility. In particular, by using two sub-circuits to process signal access and signal conversion in modules, redundant signal interference can be reduced while improving signal processing efficiency. In addition, the circuit can also adapt to the display requirements of different signals, improving the flexibility and convenience of projection display, which is conducive to increasing the stickiness of the circuit.

[0117] The foregoing has provided a detailed description of a multifunctional wireless projection circuit and a wireless projection device disclosed in the embodiments of this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. However, the above preferred embodiments are not intended to limit this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, based on the idea of ​​this utility model, there will be changes in the specific implementation and application scope without departing from the spirit and scope of this utility model. Therefore, the protection scope of this utility model is determined by the scope defined in the claims.

Claims

1. A multifunctional wireless projection circuit, characterized in that, The multi-functional wireless projection circuit includes a first signal processing sub-circuit and a second signal processing sub-circuit, wherein: The signal input terminal of the first signal processing sub-circuit is used to connect to at least one target signal source to be projected onto the screen; the signal output terminal of the first signal processing sub-circuit is communicatively connected to the signal input terminal of the second signal processing sub-circuit; the signal output terminal of the second signal processing sub-circuit is used to connect to the display device to be projected onto the screen. The first signal processing sub-circuit is configured to, after detecting the access of at least one of the target signal sources, convert the target signal source into a first signal that matches a preset protocol according to the signal transmission interface corresponding to each target signal source, and transmit all the first signals to the second signal processing sub-circuit. The second signal processing sub-circuit is configured to convert the first signal into a second signal adapted to the display requirements of the display device according to the signal transmission interface corresponding to each first signal, and transmit all the second signals to the display device so as to perform signal display on at least one second signal through the display device, wherein the signal display includes single signal display or multi-signal display.

2. The multifunctional wireless projection circuit according to claim 1, characterized in that, The second signal processing sub-circuit includes a first communication module, a first main control chip, and a first signal interaction module, wherein: The first end of the first communication module is communicatively connected to the signal output end of the first signal processing sub-circuit; the second end of the first communication module is electrically connected to the first end of the first main control chip; the second end of the first main control chip is electrically connected to the first end of the first signal interaction module; the second end of the first signal interaction module is used to connect to the display device to be projected. The first communication module is used to receive each of the first signals transmitted by the first signal processing sub-circuit, convert the first signal into a serial port protocol signal adapted to the first main control chip, and transmit the serial port protocol signal to the first main control chip. The first main control chip is used to perform signal conversion on each serial port protocol signal according to the display requirements of the display device, and transmit the second signal corresponding to the serial port protocol signal to the first signal interaction module; The first signal interaction module is used to transmit all the second signals to the display device.

3. The multifunctional wireless projection circuit according to claim 2, characterized in that, The second signal processing sub-circuit further includes a wireless communication module, wherein: The third terminal of the first main control chip is electrically connected to the first terminal of the wireless communication module; the second terminal of the wireless communication module is used to receive external wireless communication signals. The wireless communication module is used to perform a first wireless communication control through a communication antenna configured accordingly. The first wireless communication control includes receiving a WIFI signal and transmitting the received WIFI signal to the first main control chip. The WIFI signal is used to enable the first main control chip to access a wireless local area network. The wireless communication module is further configured to perform a second wireless communication control via the communication antenna, the second wireless communication control including hotspot transmission and / or Bluetooth interaction.

4. The multifunctional wireless projection circuit according to claim 2 or 3, characterized in that, The second signal processing sub-circuit also includes a wired communication module, wherein: The fourth terminal of the first main control chip is electrically connected to the first terminal of the wired communication module; the second terminal of the wired communication module is used to access the target signal interface; The wired communication module is used to access a wired local area network (LAN) signal through the target signal interface and transmit the LAN signal to the first main control chip. The LAN signal is used to enable the first main control chip to access the LAN.

5. The multifunctional wireless projection circuit according to claim 4, characterized in that, The second signal processing sub-circuit also includes a device data interaction module, wherein: The fifth terminal of the first main control chip is electrically connected to the first terminal of the device data interaction module; the second terminal of the device data interaction module is used to connect to an external target interaction device. The device data interaction module is used to perform data transmission or power supply with the target interactive device based on OTG technology; the target interactive device is a device that supports OTG function.

6. The multifunctional wireless projection circuit according to claim 2, 3, or 5, characterized in that, The second signal processing sub-circuit also includes a key display module, wherein: The sixth terminal of the first main control chip is electrically connected to the first terminal of the button display module; the second terminal of the button display module is used to connect an external button display component. The button display module is used to receive button display instructions from the button display component and transmit the button display instructions to the first main control chip; The first main control chip is also used to execute key function responses and / or control the display of status indicator lights according to the key display instructions.

7. The multifunctional wireless projection circuit according to claim 6, characterized in that, The second signal processing sub-circuit also includes a window debugging module, wherein: The seventh terminal of the first main control chip is electrically connected to the first terminal of the window debugging module; the second terminal of the window debugging module is used to connect an external window debugging device. The window debugging module is used to acquire window debugging information transmitted by the first main control chip and transmit the window debugging information to the window debugging device. The window debugging information is used to perform software debugging on the first main control chip.

8. The multifunctional wireless projection circuit according to claim 2, 3, 5, or 7, characterized in that, The first signal processing sub-circuit includes a second communication module, a second main control chip, and a second signal interaction module, wherein: The first end of the second communication module is used to access at least one target signal source to be projected onto the screen; the second end of the second communication module is electrically connected to the first end of the second main control chip; the second end of the second main control chip is electrically connected to the first end of the second signal interaction module; the second end of the second signal interaction module is electrically connected to the first end of the first communication module. The second communication module is used to receive all the target signal sources to be projected and transmit all the target signal sources to the second main control chip. All the target signal sources include at least one of HDMI signal source, USB-A signal source and TYPE-C signal source. The second main control chip is used to convert each target signal source into a first protocol signal that matches a preset first data transmission protocol according to the signal transmission interface corresponding to each target signal source, and transmit the first protocol signal to the second signal interaction module through the second communication module; The second signal interaction module is used to convert each of the first protocol signals into a second protocol signal that matches a preset second data transmission protocol, as a first signal; and is also used to transmit each of the first signals to the first communication module.

9. The multifunctional wireless projection circuit according to claim 8, characterized in that, The first data transmission protocol includes the SDIO protocol; the second data transmission protocol includes the WIFI 2.4G / 5G protocol.

10. A wireless screen projection device, characterized in that, The wireless projection device includes a main body and further includes the multi-functional wireless projection circuit as described in any one of claims 1-9.

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