Signal switching system and signal switching method

Abstract

The present application relates to a signal switching system and a signal switching method. The system can receive a first input signal of a user device through an external interface and output it to a first operating system control unit, so that the first operating system control unit displays the first input signal through a display screen; the first switch can conduct the signal channel between the first switch and the second switch according to the first switching instruction, so that the output signal of the input device is transmitted to the second switch; the second switch conducts the signal channel between the second switch and the external interface according to the first switching instruction, so that the second switch transmits the received output signal to the user device through the external interface, so that while the first input signal is transmitted using the external interface of the interactive tablet, the external interface is reused, and the first switch and the second switch are automatically switched to realize the transmission of the output signal of the input device to the user device, so that the input device on the interactive tablet is switched to the user device for use.

Description

Technical Field

[0001] The present application relates to the technical field of signal switching, and in particular to a signal switching system and a signal switching method. Background Art

[0002] With the rapid development of network technology and information technology, social integration is faster and the demand for remote communication is greater. Interactive tablets (such as smart conference tablets) are equipped with remote conference video systems. They can simultaneously transmit audio and video signals wirelessly under ordinary networks, with real-time and non-delayed transmission and high stability. No matter where the participants are, they can hold real-time meetings over long distances (such as across countries and regions); screens are shared in real time in different places, which is as vivid and realistic as being in the same room. At the same time, smart conference tablets use high-definition LCD screens as displays and Android systems as operating platforms. Cameras, microphones and other peripherals can be switched between Windows and Android systems. The CAMERA (camera) is generally a 4K high-definition camera, and the MIC (Microphone) is generally a microphone array of more than 8MIC; while the camera pixels of user devices are usually lower than 4K, and the MIC is a microphone array of less than 8MIC; for example, laptops are generally single MIC, and the camera pixels are generally less than 720P.

[0003] In the prior art, when a user device is connected to an interactive tablet, usually during the interaction between the user device and the interactive tablet, the user device can only use its own peripherals such as a camera and a microphone. If high-quality peripherals such as a camera and a microphone are needed, additional corresponding peripherals need to be added, resulting in a significant increase in hardware costs and low convenience of use. Summary of the invention

[0004] Based on this, it is necessary to provide a signal switching system and a signal switching method that can automatically switch signal channels so that high-quality peripherals on an interactive tablet can be switched to user devices for use in response to the above technical problems.

[0005] A signal switching system, comprising:

[0006] A first operating system control unit, the first operating system control unit is used to connect to the display screen;

[0007] An external interface, the external interface is connected to the first operating system control unit; the external interface is also used to connect to the user device; the external interface is configured to receive a first input signal of the user device, and transmit the first input signal to the first operating system control unit, so that the first operating system control unit processes the first input signal, and transmits the processed signal to the display screen for display;

[0008] A first switch, wherein a first input end of the first switch is used to connect to an input device, and a first output end of the first switch is connected to a first operating system control unit;

[0009] A second switch, wherein a first input end of the second switch is connected to a second output end of the first switch, the second input end of the second switch is used to connect to an external interface, and a first output end of the second switch is connected to the external interface;

[0010] Among them, the first switch is configured to open the signal channel between the first switch and the second switch according to the first switching instruction, so that the output signal of the input device is transmitted to the second switch through the first switch; the second switch is configured to open the signal channel between the second switch and the external interface according to the first switching instruction, so that the second switch transmits the received output signal to the user device through the external interface.

[0011] Optionally, it further includes a second operating system control unit, the second operating system control unit is connected to the first operating system control unit, and the second operating system control unit is connected to the third output terminal of the first switch;

[0012] When the second operating system control unit is in working state, the first switch is also configured to open the signal channel between the first switch and the second operating system control unit according to the second switching instruction, so that the output signal of the input device is transmitted to the second operating system control unit through the first switch.

[0013] Optionally, a third switch is further included, wherein a first input end of the third switch is connected to a second output end of the second switch, a first output end of the third switch is connected to a first operating system control unit, and a second output end of the third switch is connected to a second operating system control unit;

[0014] When the first operating system control unit is in the working state, the second switch switches on the signal channel between the second switch and the external interface, the signal channel between the second switch and the third switch, and switches on the signal channel between the third switch and the first operating system control unit according to the third switching instruction, so that the second input signal of the user device is transmitted to the first operating system control unit through the second switch and the third switch in sequence;

[0015] When the second operating system control unit is in a working state, the second switch switches the signal channel between the second switch and the external interface, the signal channel between the second switch and the third switch, and switches the signal channel between the third switch and the second operating system control unit according to the fourth switching instruction, so that the second input signal of the user device is transmitted to the second operating system control unit through the second switch and the third switch in sequence.

[0016] Optionally, the external interface is a TYPEC interface; the first input signal is a DP signal, and the second input signal is a USB signal.

[0017] Optionally, when the first operating system control unit is in a working state, the first switch is also configured to switch on the signal channel between the first switch and the first operating system control unit according to a fifth switching instruction, so that the output signal of the input device is transmitted to the first operating system control unit through the first switch.

[0018] Optionally, a first hub is also included, and the first hub is connected between the input device and the first input end of the first switch.

[0019] Optionally, a second hub is also included, and the second hub is connected between the second output end of the second switch and the first input end of the third switch.

[0020] Optionally, the input device includes any one or any combination of the following: a camera module, a sound module, and a touch module.

[0021] Optionally, the first operating system control unit is used to execute the Android operating system; the second operating system control unit is used to execute the Windows operating system.

[0022] A signal switching method, comprising:

[0023] Acquire a first input signal of a user device, process the first input signal, and transmit the processed signal to a display screen for display;

[0024] Obtaining a switching request, and generating a first switching instruction according to the switching request;

[0025] The first switching instruction is transmitted to the first switch and the second switch respectively; the first switching instruction is used to instruct the first switch to turn on the signal channel between the first switch and the second switch, so that the output signal of the input device is transmitted to the second switch through the first switch; the first switching instruction is also used to instruct the second switch to turn on the signal channel between the second switch and the external interface, so that the second switch transmits the received output signal to the user device through the external interface.

[0026] One of the above technical solutions has the following advantages and beneficial effects:

[0027] In the above-mentioned signal switching system, the signal switching system can be arranged in an interactive flat panel and connected to a display screen through a first operating system control unit. The external interface is connected to the first operating system control unit; the external interface is connected to a user device, and the external interface can receive a first input signal of the user device, and transmit the first input signal to the first operating system control unit, so that the first operating system control unit processes the first input signal, and transmits the processed signal to the display screen for display. The first input end of the first switch is connected to the input device, and the first output end of the first switch is connected to the first operating system control unit. The first input end of the second switch is connected to the second output end of the first switch, the second input end of the second switch is connected to the external interface, and the first output end of the second switch is connected to the external interface; and then the first switch can, according to the first switching instruction, conduct the signal channel between the first switch and the second switch, so that the output signal of the input device is transmitted to the second switch through the first switch. The second switch can, according to the first switching instruction, conduct the signal channel between the second switch and the external interface, so that the second switch transmits the received output signal to the user device through the external interface. While using the external interface of the interactive tablet to transmit the first input signal, the external interface is multiplexed, and the first switch and the second switch are automatically switched to transmit the output signal of the input device to the user device, so that the input device (such as a high-pixel camera, etc.) on the interactive tablet is switched to the user device for use. When the user device is connected to the external interface, the application can upload the first input signal to the display screen for display, and can also switch by controlling the first switch and the second switch to switch, so as to switch the input device out for the user device to use, thereby achieving the purpose of the user device using the input device of the interactive tablet. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a first structural diagram of the signal switching system in an embodiment of the present application.

[0029] Figure 2 This is a second structural diagram of the signal switching system in an embodiment of the present application.

[0030] Figure 3 This is a third structural diagram of the signal switching system in an embodiment of the present application.

[0031] Figure 4 This is a fourth structural diagram of the signal switching system in an embodiment of the present application.

[0032] Figure 5 This is a fifth structural diagram of the signal switching system in an embodiment of the present application.

[0033] Figure 6 Schematic diagram of the signal switching method in the embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0035] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0037] In order to solve the problem that in the traditional process of user equipment interacting with the interactive tablet, the user equipment can only use its own peripherals such as cameras and microphones. If high-quality peripherals such as cameras and microphones are needed, corresponding peripherals need to be added, which greatly increases the hardware cost and reduces the convenience of use. In one embodiment, Figure 1 As shown, a signal switching system is provided, including a first operating system control unit 110, an external interface 120, a first switch 130, and a second switch 140. The first operating system control unit 110 is used to connect to a display screen 150. The external interface 120 is connected to the first operating system control unit 110, and the external interface 120 is also used to connect to a user device 160. The external interface 120 is configured to receive a first input signal of the user device 160, and transmit the first input signal to the first operating system control unit 110, so that the first operating system control unit 110 processes the first input signal, and transmits the processed signal to the display screen 150 for display. The first input end of the first switch 130 is used to connect to an input device 170, and the first output end of the first switch 130 is connected to the first operating system control unit 110. The first input end of the second switch 140 is connected to the second output end of the first switch 130, the second input end of the second switch 140 is used to connect to the external interface 120, and the first output end of the second switch 140 is connected to the external interface 120.

[0038] Among them, the first switch 130 is configured to, according to the first switching instruction, turn on the signal channel between the first switch 130 and the second switch 140, so that the output signal of the input device 170 is transmitted to the second switch 140 through the first switch 130; the second switch 140 is configured to, according to the first switching instruction, turn on the signal channel between the second switch 140 and the external interface 120, so that the second switch 140 transmits the received output signal to the user device 160 through the external interface 120.

[0039] The signal switching system can be applied to an interactive tablet, which can be, but is not limited to, a smart conference tablet and a smart display screen 150. The first operating system control unit 110 refers to a control unit that can execute the first operating system. In one example, the first operating system control unit 110 can be a SOC (System on Chip) control unit. The display screen 150 can be a display screen 150 of an interactive tablet, for example, the display screen 150 can be a liquid crystal display screen 150. The external interface 120 can be an interface integrated inside the interactive tablet, and the external interface 120 can be used to connect the user device 160. For example, the user device 160 can be plugged into the external interface 120 to establish a connection between the user device 160 and the external interface 120, and then the user device 160 can transmit the first input signal to the interactive tablet through the external interface 120, so that the content corresponding to the first input signal can be displayed through the display screen 150 on the interactive tablet. In one example, the first input signal can be a video signal. The external interface 120 can be a hot-swappable interface. The user device 160 can be, but is not limited to, a laptop, a tablet computer, a desktop computer, a mobile phone, etc.

[0040] The first switch 130 may include one input terminal (i.e., the first input terminal) and three output terminals (i.e., the first output terminal, the second output terminal, and the third output terminal). The first input terminal of the first switch 130 may be connected to the input device 170. In one example, the first input terminal of the first switch 130 may be directly connected to the input device 170; the first input terminal of the first switch 130 may also be indirectly connected to the input device 170. The first switch 130 may switch the corresponding output terminal on according to the corresponding switching instruction. For example, the first switch 130 may switch on the second output terminal according to the first switching instruction, thereby switching on the signal channel between the first switch 130 and the second switch 140. It should be noted that when any one of the three output terminals of the first switch 130 is turned on, the other two output terminals are in a closed state. The first switching instruction may be generated by the first operating system control unit 110. For example, the first switching instruction may be a level signal (e.g., a high level signal or a low level signal), and the first switching instruction may also be a PWM signal of a corresponding duty cycle. For example, when a user needs to perform a signal switching operation, he or she may send a request to the interactive tablet by key input or language input, and then the first operating system control unit 110 of the interactive tablet may obtain the corresponding switching request and generate a first switching instruction according to the switching request.

[0041] The input device 170 may be an input device 170 integrated on the interactive tablet, for example, the input device 170 may be a camera on the interactive tablet, etc. The input device 170 may output a corresponding output signal based on the first input signal transmitted by the user device 160. The second switch 140 may include two input terminals (i.e., a first input terminal and a second input terminal) and two output terminals (i.e., a first output terminal and a second output terminal). The first output terminal of the second switch 140 may be connected to the external interface 120. In one example, the first output terminal of the second switch 140 may be directly connected to the external interface 120. The second switch 140 may switch the corresponding output terminal on according to the corresponding switching instruction. For example, the second switch 140 may switch on the first output terminal of the second switch 140 according to the first switching instruction, thereby switching on the signal channel between the second switch 140 and the external interface 120. It should be noted that when any one of the two output terminals of the second switch 140 is turned on, the other output terminal is in a closed state. The first switching instruction may be generated by the first operating system control unit 110. For example, the first switching instruction may be a level signal (such as a high level signal or a low level signal), and the first switching instruction may also be a PWM signal of a corresponding duty cycle. Exemplarily, the signal channel between the second switch 140 and the external interface 120 may include an input signal channel and an output signal channel. When the first output terminal of the second switch 140 is turned on, the output signal channel between the second switch 140 and the external interface 120 is turned on; when the second input terminal of the second switch 140 is turned on, the input signal channel between the second switch 140 and the external interface 120 is turned on. Among them, the output signal channel and the input signal channel may share a signal channel.

[0042] Exemplarily, based on the first operating system control unit 110 connecting to the display screen 150; the external interface 120 connecting to the first operating system control unit 110; the external interface 120 connecting to the user device 160; the first input end of the first switch 130 connecting to the input device 170, and the first output end of the first switch 130 connecting to the first operating system control unit 110; the first input end of the second switch 140 connecting to the second output end of the first switch 130, the second input end of the second switch 140 connecting to the external interface 120, and the first output end of the second switch 140 connecting to the external interface 120; and then plugging the user device 160 into the external interface 120, so that the user device 160 establishes a connection with the interactive tablet, and then the user can operate the user device 160, and transmit the first input signal of the user device 160 to the external interface 120, and then the external interface 120 can receive the first input signal of the user device 160, and transmit the first input signal to the first operating system control unit 110, so that the first operating system control unit 110 processes the first input signal and transmits the processed signal to the display screen 150 for display. In addition, the user can operate the user device 160 to perform a signal switching operation, and then the first operating system control unit 110 generates a corresponding first switching instruction according to the switching request, and transmits the first switching instruction to the first switch 130 and the second switch 140 respectively, so that the first switch 130 conducts the signal channel between the first switch 130 and the second switch 140 according to the first switching instruction, so that the output signal of the input device 170 is transmitted to the second switch 140 through the first switch 130; the second switch 140 conducts the signal channel between the second switch 140 and the external interface 120 according to the first switching instruction, so that the second switch 140 transmits the received output signal to the user device 160 through the external interface 120, so as to use the input device 170 on the interactive tablet end at the user device 160 end. In one example, the user can operate the interactive tablet to perform a signal switching operation, and then the first operating system control unit 110 can generate a corresponding first switching instruction according to the switching request. In another example, the first operating system control unit 110 can generate a corresponding first switching instruction according to the acquired first input signal.

[0043] In the above embodiment, while the first input signal is transmitted through the external interface 120 of the interactive tablet, the external interface 120 is multiplexed, and the first switch 130 and the second switch 140 are automatically switched to realize the transmission of the output signal of the input device 170 to the user device 160, so that the input device 170 (such as a high-pixel camera, etc.) on the interactive tablet is switched to the user device 160 for use. When the user device 160 is connected to the external interface 120, the first input signal can be uploaded to the display screen 150 for display, and the first switch 130 and the second switch 140 can be controlled to switch, so that the input device 170 is cut out for the user device 160 to use, so that the user device 160 uses the input device 170 of the interactive tablet.

[0044] In order to improve the versatility of the signal switching system and the convenience of application on the dual-system interactive tablet. In an example, Figure 2 As shown, the signal switching system further includes a second operating system control unit 180 , which is connected to the first operating system control unit 110 , and the second operating system control unit 180 is connected to the third output terminal of the first switch 130 .

[0045] When the second operating system control unit 180 is in a working state, the first switch 130 is also configured to turn on the signal channel between the first switch 130 and the second operating system control unit 180 according to a second switching instruction, so that the output signal of the input device 170 is transmitted to the second operating system control unit 180 through the first switch 130.

[0046] Among them, the second operating system control unit 180 refers to a control unit that can execute the second operating system. In one example, the second operating system control unit 180 can be a control unit for executing the Windows operating system. The first operating system control unit 110 can be a control unit for executing the Android operating system. That is, the first operating system control unit 110 can be used to execute the Android operating system; the second operating system control unit 180 can be used to execute the Windows operating system. The first operating system control unit 110 and the second operating system control unit 180 can be connected via an HDMI (High Definition Multimedia Interface) cable. It should be noted that when the first operating system control unit 110 executes the first operating system, the second operating system control unit 180 suspends the execution of the second operating system; when the second operating system control unit 180 executes the second operating system, the first operating system control unit 110 suspends the execution of the first operating system. That is, in a dual-system interactive tablet, switching back and forth between the first operating system and the second operating system can be achieved.

[0047] Based on the connection between the second operating system control unit 180 and the first operating system control unit 110, the second operating system control unit 180 is connected to the third output terminal of the first switch 130. Then the user device 160 establishes a connection with the interactive tablet. If the second operating system control unit 180 is in a working state and the first operating system control unit 110 is in a non-working state (that is, when the interactive tablet is currently in the second operating system state), the first operating system control unit 110 generates a second switching instruction, and transmits the second switching instruction to the first switch 130, so that the first switch 130 turns on the third output terminal of the first switch 130 according to the second switching instruction, that is, turns on the signal channel between the first switch 130 and the second operating system control unit 180, so that the output signal of the input device 170 is transmitted to the second operating system control unit 180 through the first switch 130. It should be noted that the second switching instruction can also be generated by the second operating system control unit 180. For example, the second operating system control unit 180 can generate the second switching instruction according to the current working state and the received input signal, and transmit the second switching instruction to the first switch 130. The first switching instruction may be a level signal (such as a high level signal or a low level signal), and the first switching instruction may also be a PWM signal with a corresponding duty cycle.

[0048] For example, after the user device 160 establishes a connection with the interactive tablet, when the user device 160 transmits a USB (Universal Serial Bus) signal to the external interface 120, if the interactive tablet is currently in the Windows system state and no switching request is received, then at this time, the third output terminal of the first switch 130 is turned on, so that the output signal of the input device 170 is transmitted to the second operating system control unit 180 through the first switch 130. After the user device 160 establishes a connection with the interactive tablet, when the user device 160 transmits a video signal to the external interface 120, if the interactive tablet is currently in the Windows system state and no switching request is received, then at this time, the third output terminal of the first switch 130 is turned on, so that the output signal of the input device 170 is transmitted to the second operating system control unit 180 through the first switch 130, thereby improving the versatility of the signal switching system and enhancing the convenience of application on the dual-system interactive tablet.

[0049] In order to further improve the diversity of signal switching, the signal input by the user equipment 160 can be transmitted in different operating systems. In one example, Figure 3As shown, the signal switching system also includes a third switch 190, the first input end of the third switch 190 is connected to the second output end of the second switch 140, the first output end of the third switch 190 is connected to the first operating system control unit 110, and the second output end of the third switch 190 is connected to the second operating system control unit 180.

[0050] When the first operating system control unit 110 is in the working state, the second switch 140, according to the third switching instruction, conducts the signal channel between the second switch 140 and the external interface 120, the signal channel between the second switch 140 and the third switch 190, and conducts the signal channel between the third switch 190 and the first operating system control unit 110, so that the second input signal of the user device 160 is sequentially transmitted to the first operating system control unit 110 through the second switch 140 and the third switch 190. When the second operating system control unit 180 is in the working state, the second switch 140, according to the fourth switching instruction, conducts the signal channel between the second switch 140 and the external interface 120, the signal channel between the second switch 140 and the third switch 190, and conducts the signal channel between the third switch 190 and the second operating system control unit 180, so that the second input signal of the user device 160 is sequentially transmitted to the second operating system control unit 180 through the second switch 140 and the third switch 190.

[0051] The third switch 190 may include one input terminal (i.e., a first input terminal) and two output terminals (i.e., a first output terminal and a second output terminal). The first input terminal of the third switch 190 is connected to the second output terminal of the second switch 140. In one example, the first input terminal of the third switch 190 may be directly connected to the second output terminal of the second switch 140; the first input terminal of the third switch 190 may be indirectly connected to the second output terminal of the second switch 140. The third switch 190 may switch on the corresponding output terminal according to the corresponding switching instruction. For example, the third switch 190 may switch on the first output terminal of the third switch 190 according to the third switching instruction, thereby switching on the signal channel between the third switch 190 and the first operating system control unit 110. The third switch 190 may also switch on the second output terminal of the third switch 190 according to the fourth switching instruction, thereby switching on the signal channel between the third switch 190 and the second operating system control unit 180. It should be noted that when any one of the two output terminals of the third switch 190 is turned on, the remaining output terminal is turned off.

[0052] The third switching instruction may be generated by the first operating system control unit 110, such as the third switching instruction may be a level signal (such as a high level signal or a low level signal), and the third switching instruction may also be a PWM signal of a corresponding duty cycle. The fourth switching instruction may be generated by the second operating system control unit 180, such as the fourth switching instruction may be a level signal (such as a high level signal or a low level signal), and the fourth switching instruction may also be a PWM signal of a corresponding duty cycle. Exemplarily, the signal switching system may switch instructions accordingly according to the current operating system state and the acquired input signal type transmitted by the user device 160. For example, when the first operating system control unit 110 is in a working state and the input signal transmitted by the user device 160 detected is a second input signal, the first operating system control unit 110 may generate a third switching instruction. For another example, when the second operating system control unit 180 is in a working state and the input signal transmitted by the user device 160 detected is a second input signal, the second operating system control unit 180 may generate a fourth switching instruction.

[0053] Based on the first input end of the third switch 190 being connected to the second output end of the second switch 140, the first output end of the third switch 190 being connected to the first operating system control unit 110, and the second output end of the third switch 190 being connected to the second operating system control unit 180, the user device 160 is connected to the interactive tablet. If the first operating system control unit 110 is in a working state and the second operating system control unit 180 is in a non-working state (that is, when the interactive tablet is currently in the first operating system state), the first operating system control unit 110 generates a third switching instruction, and transmits the third switching instruction to the second switch 140 and the third switch, respectively. The switch 190 enables the second switch 140 to turn on the second output terminal and the second input terminal of the second switch 140 according to the third switching instruction, that is, to turn on the signal channel between the second switch 140 and the third switch 190, and to turn on the signal channel between the second switch 140 and the external interface 120; the third switch 190 enables the first output terminal of the third switch 190 according to the third switching instruction, that is, to turn on the signal channel between the third switch 190 and the first operating system control unit 110, so that the second input signal of the user device 160 is transmitted to the first operating system control unit 110 through the second switch 140 and the third switch 190 in sequence.

[0054] If the second operating system control unit 180 is in a working state and the first operating system control unit 110 is in a non-working state (i.e., the interactive tablet is currently in the second operating system state), a fourth switching instruction is generated by the second operating system control unit 180, and the fourth switching instruction is transmitted to the second switch 140 and the third switch 190 respectively, so that the second switch 140 turns on the second output end and the second input end of the second switch 140 according to the fourth switching instruction, that is, turns on the signal channel between the second switch 140 and the third switch 190, and turns on the signal channel between the second switch 140 and the external interface 120; the third switch 190 turns on the second output end of the third switch 190 according to the fourth switching instruction, that is, turns on the signal channel between the third switch 190 and the second operating system control unit 180, so that the second input signal of the user device 160 is transmitted to the second operating system control unit 180 through the second switch 140 and the third switch 190 in sequence.

[0055] Exemplarily, when the user device 160 is connected to the interactive tablet, and the user device 160 transmits a USB signal to the external interface 120, if the interactive tablet is currently in the Android system state, then the second output end and the second input end of the second switch 140 are turned on, and the first output end of the third switch 190 is turned on, so that the USB signal of the user device 160 is transmitted to the first operating system control unit 110 through the external interface 120, the second switch 140 and the third switch 190 in sequence. When the user device 160 is connected to the interactive tablet, and the user device 160 transmits a USB signal to the external interface 120, if the interactive tablet is currently in the Windows system state, then the second output end and the second input end of the second switch 140 are turned on, and the first output end of the third switch 190 is turned on, so that the USB signal of the user device 160 is transmitted to the second operating system control unit 180 through the external interface 120, the second switch 140 and the third switch 190 in sequence, thereby improving the diversity of signal switching, so that the signal input by the user device 160 can be transmitted in different operating systems.

[0056] In one example, the external interface 120 is a TYPEC (USB Type-C) interface; the first input signal is a DP (DisplayPort) signal, and the second input signal is a USB signal. The external interface 120 is a TYPEC interface, that is, the external interface 120 can be used to transmit USB signals and DP signals, and the external interface 120 signal can also be used for external charging. For example, when the user device 160 is plugged into the external interface 120, power can be provided to the user device 160 through the external interface 120.

[0057] Exemplarily, when the first operating system control unit 110 is in a working state, the first switch 130 is also configured to turn on the signal channel between the first switch 130 and the first operating system control unit 110 according to a fifth switching instruction, so that the output signal of the input device 170 is transmitted to the first operating system control unit 110 through the first switch 130.

[0058] When the user device 160 establishes a connection with the interactive tablet, if the first operating system control unit 110 is in a working state and the second operating system control unit 180 is in a non-working state (i.e., the interactive tablet is currently in the first operating system state), the first operating system control unit 110 generates a fifth switching instruction, and transmits the fifth switching instruction to the first switch 130, so that the first switch 130 turns on the first output end of the first switch 130 according to the fifth switching instruction, that is, turns on the signal channel between the first switch 130 and the first operating system control unit 110, so that the output signal of the input device 170 is transmitted to the first operating system control unit 110 through the first switch 130. It should be noted that the fifth switching instruction can also be generated by the first operating system control unit 110. For example, the first operating system control unit 110 can generate the fifth switching instruction according to the current working state and the received input signal, and transmit the fifth switching instruction to the first switch 130. Among them, the fifth switching instruction can be a level signal (such as a high level signal or a low level signal), and the fifth switching instruction can also be a PWM signal with a corresponding duty cycle.

[0059] For example, after the user device 160 establishes a connection with the interactive tablet, when the user device 160 transmits a USB signal to the external interface 120, if the interactive tablet is currently in the Android system state, then at this time, the first output end of the first switch 130 is turned on, so that the output signal of the input device 170 is transmitted to the first operating system control unit 110 through the first switch 130. After the user device 160 establishes a connection with the interactive tablet, when the user device 160 transmits a video signal to the external interface 120, if the interactive tablet is currently in the Android system state, then at this time, the first output end of the first switch 130 is turned on, so that the output signal of the input device 170 is transmitted to the first operating system control unit 110 through the first switch 130, thereby further improving the versatility of the signal switching system and enhancing the convenience of application on the dual-system interactive tablet.

[0060] In order to further improve the signal transmission efficiency and the convenience of signal switching, Figure 4 As shown, in one example, the signal switching system further includes a first hub 210 , which is connected between the input device 170 and the first input terminal of the first switch 130 .

[0061] Among them, the first hub 210 refers to a HUB hub, such as the first hub 210 can be a USB HUB hub. The input end of the first hub 210 is connected to the input device 170, and the output end of the first hub 210 is connected to the first switch 130. The input device 170 includes any one or any combination of the following: a camera module, a sound module, and a touch module. For example, the camera module can be used to output a CAMERA signal, the sound module can be used to output a MIC signal, and the touch module can be used to output a TOUCH signal. That is, the output signal of the input device 170 may include any one or any combination of the following: a CAMERA signal, a MIC signal, and a TOUCH signal. Then the input device 170 can transmit the output signal to the first switch 130 through the first hub 210, thereby transmitting the output signal through the conduction state of the corresponding output end of the first switch 130.

[0062] Exemplarily, if the input device 170 includes a camera module, a sound module, and a touch module, the camera module, the sound module, and the touch module are respectively connected to corresponding input ports of the first hub 210, that is, the camera module can transmit the CAMERA signal to the first switch 130 through the first hub 210, the sound module can transmit the MIC signal to the first switch 130 through the first hub 210, and the touch module can transmit the TOUCH signal to the first switch 130 through the first hub 210. When the first output end of the first switch 130 is turned on, the first switch 130 can transmit the CAMERA signal, the MIC signal, and the TOUCH signal to the first operating system control unit 110, so that the first operating system control unit 110 processes the CAMERA signal, the MIC signal, and the TOUCH signal. When the second output terminal of the first switch 130 is turned on, and the first output terminal of the second switch 140 is turned on, the first switch 130 can transmit the CAMERA signal, the MIC signal, and the TOUCH signal to the user device 160 in sequence through the second switch 140 and the external interface 120, so as to cut out the touch module, the camera module, and the sound module for the user device 160 to use, so as to achieve the purpose of the user device 160 using the camera, sound, touch and other devices of the interactive tablet. When the third output terminal of the first switch 130 is turned on, the first switch 130 can transmit the CAMERA signal, the MIC signal, and the TOUCH signal to the second operating system control unit 180, so that the second operating system control unit 180 processes the CAMERA signal, the MIC signal, and the TOUCH signal, thereby further improving the signal transmission efficiency and the convenience of signal switching.

[0063] In one example, if Figure 4As shown, the signal switching system further includes a second hub 220 , which is connected between the second output terminal of the second switch 140 and the first input terminal of the third switch 190 .

[0064] The second hub 220 refers to a HUB hub, such as a USB HUB hub. The input end of the second hub 220 is connected to the second switch 140, and the output end of the second hub 220 is connected to the third switch 190. The user device 160 is connected to the external interface 120, and the user device 160 transmits a USB signal to the external interface 120.

[0065] When the second output terminal and the second input terminal of the second switch 140 are turned on, the external interface 120 can transmit the received USB signal to the second switch 140, and then the second switch 140 can transmit the USB signal to the third switch 190 through the second hub 220. When the first output terminal of the third switch 190 is turned on, the third switch 190 can transmit the USB signal to the first operating system control unit 110, so that the first operating system control unit 110 processes the USB signal; when the second output terminal of the third switch 190 is turned on, the third switch 190 can transmit the USB signal to the second operating system control unit 180, so that the second operating system control unit 180 processes the USB signal.

[0066] In one example, if Figure 5 As shown, the CAMERA signal output by the camera module, the TOUCH signal output by the touch module, and the MIC signal output by the sound module are transmitted via the first hub (ie Figure 5 Then enter the first switch (i.e. Figure 5 Based on the switching of the first switch, the second operating system control unit (i.e. Figure 5 WINDOWS in the system), the first operating system control unit (i.e. Figure 5 ANDROID SOC) and the second switch (i.e. Figure 5 Based on the second switch (i.e. Figure 5 SW2 in the interface can receive CAMERA, TOUCH and MIC signals from SW1, and transmit CAMERA, TOUCH and MIC signals to the external interface (i.e. Figure 5 Based on the switching of the second switch and the multiplexing of the USB differential lines in the external interface, the third switch (i.e. Figure 5 SW3 in the middle) can receive the data through TYPEC, SW2, the second hub (i.e. Figure 5 USB signal of user device coming from USBHUB2).

[0067] For example, when the external interface (i.e. Figure 5 When the user device inserted in TYPEC outputs a USB signal, if the dual-system interactive tablet is in the WINDOWS system state, the first switch (i.e. Figure 5 SW1 in the second operating system control unit (i.e. Figure 5 The signal channel of WINDOWS in the system is turned on, and the CAMERA signal, TOUCH signal, and MIC signal are transmitted to the second operating system control unit (i.e. Figure 5 The USB signal input from the external interface is transmitted to the second switch (i.e. Figure 5 SW2 in the , and through the second hub (i.e. Figure 5 USB HUB2 in the middle) and then transmits it to the third switch (i.e. Figure 5 SW3 in the , at this time the third switch (i.e. Figure 5 SW3 in the figure is used to switch to the second operating system control unit (i.e. Figure 5 The WINDOWS in the dual-system interactive tablet is turned on, and then the USB signal also enters the WINDOWS system. If the dual-system interactive tablet is in the Android system state, at this time the first switch (i.e. Figure 5 SW1 in the first operating system control unit (i.e. Figure 5 The signal channel of ANDROID SOC in the first operating system is turned on, and the CAMERA signal, TOUCH signal, and MIC signal are transmitted to the first operating system control unit (ie Figure 5 The USB signal input from the external interface is transmitted to the second switch (i.e. Figure 5 SW2 in the , and through the second hub (i.e. Figure 5 USB HUB2 in the middle) and then transmits it to the third switch (i.e. Figure 5 SW3 in the , at this time the third switch (i.e. Figure 5 SW3 in the figure is used to switch to the first operating system control unit (i.e. Figure 5 The ANDROID SOC in the device is turned on, and the USB signal also enters the Android system.

[0068] When the external interface (i.e. Figure 5 When the user device inserted in TYPEC outputs a video signal (i.e., DP signal), if the dual-system interactive flat panel is in the WINDOWS system state, the first switch (i.e. Figure 5 SW1 in the second operating system control unit (i.e. Figure 5The signal channel of WINDOWS in the system is turned on, and the CAMERA signal, TOUCH signal, and MIC signal are transmitted to the second operating system control unit (i.e. Figure 5 WINDOWS in the system). The video signal input from the external interface is processed and used as the input signal source of the Android system for the user to select. If the dual-system interactive tablet is in the Android system state, the first switch (i.e. Figure 5 SW1 in the first operating system control unit (i.e. Figure 5 The signal channel of ANDROID SOC in the first operating system is turned on, and the CAMERA signal, TOUCH signal, and MIC signal are transmitted to the first operating system control unit (ie Figure 5 The video signal from the external interface is processed and still serves as an input signal source of the Android system for users to choose.

[0069] If the dual-system interactive tablet is in the Android system state, and the user inputs the signal source as TYPEC, then the external interface (i.e. Figure 5 The video signal input from the TYPEC in the image is processed and then input to the first operating system control unit (i.e. Figure 5 ANDROID SOC in the system) and through the first operating system control unit (i.e. Figure 5 ANDROID SOC in the display (i.e. Figure 5 PANEL in the display; the first operating system control unit (ie Figure 5 After the ANDROID SOC in the device detects that a TYPE-C signal is input, the user will be asked whether to output the CAMERA signal, TOUCH signal, and MIC signal to the user device (such as a laptop). If the user chooses to output the CAMERA signal, TOUCH signal, and MIC signal to the user device (such as a laptop), the first switch (i.e. Figure 5 SW1 in the switch and the second switch (i.e. Figure 5 SW2 in the SW2 is turned on, and then the CAMERA signal, TOUCH signal, and MIC signal are sequentially transmitted through the first hub (i.e. Figure 5 USB HUB1 in the first switch (i.e. Figure 5 SW1 in), the second switch (i.e. Figure 5 SW2 in the Figure 5 TYPEC in), through the external interface (ie Figure 5 The USB differential line of TYPEC in the output is sent to the user device, so that the camera module, sound module, and touch module can be used by the user device, and the user device (such as a notebook or other peripherals) can use the external interface (i.e. Figure 5When the TYPEC video is projected, the USB differential line of the port can output the signals of the high-definition camera, array microphone and touch reverse control input device of the interactive tablet (such as a conference tablet).

[0070] In one example, by using the TYPE-C port of the interactive tablet to transmit the video signal of the user device, the USB differential line in the TYPE-C port is reused, and a first switch is set online. On the basis of meeting the full functions of USB, DP input and external charging of the traditional TYPE-C port, the output end of the first switch and the output end of the second switch can be automatically switched by identifying what signal is input at the TYPE-C port to adapt the USB differential line to be used as USB input or to cooperate with the input DP video signal to output the camera, microphone and touch signal of the interactive tablet to user devices such as laptops.

[0071] In one example, if Figure 6 As shown, a signal switching method is provided, comprising:

[0072] Step S610: acquiring a first input signal of a user device, processing the first input signal, and transmitting the processed signal to a display screen for display.

[0073] For a detailed description of the user device, obtaining a first input signal of the user device, processing the first input signal, and transmitting the processed signal to the display screen for display, please refer to the above content and will not be repeated here.

[0074] Step S610: obtaining a switching request, and generating a first switching instruction according to the switching request.

[0075] For the detailed description of the switching request, the first switching instruction, obtaining the switching request, and generating the first switching instruction according to the switching request, please refer to the above content, which will not be repeated here.

[0076] Step S610, transmitting the first switching instruction to the first switch and the second switch respectively; the first switching instruction is used to instruct the first switch to turn on the signal channel between the first switch and the second switch, so that the output signal of the input device is transmitted to the second switch through the first switch; the first switching instruction is also used to instruct the second switch to turn on the signal channel between the second switch and the external interface, so that the second switch transmits the received output signal to the user device through the external interface.

[0077] The first switch, the second switch, the input device, the user device, and the first switching instruction are transmitted to the first switch and the second switch respectively; the first switching instruction is used to instruct the first switch to turn on the signal channel between the first switch and the second switch so that the output signal of the input device is transmitted to the second switch through the first switch. Please refer to the above content for the specific description, which will not be repeated here.

[0078] In the above embodiment, it is possible to realize that while the first input signal is transmitted by using the external interface of the interactive tablet, the external interface is reused, and the output signal of the input device is transmitted to the user device through automatic switching by the first switch and the second switch, so that the input device (such as a high-pixel camera, etc.) on the interactive tablet is switched to the user device for use. When the user device is connected to the external interface, the first input signal can be uploaded to the display screen for display, and the first switch and the second switch can be controlled to switch, so that the input device is cut out for the user device to use, thereby achieving the purpose of the user device using the input device of the interactive tablet.

[0079] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A signal switching system, characterized in that: include: A first operating system control unit, wherein the first operating system control unit is used to connect to a display screen; an external interface, the external interface being connected to the first operating system control unit; the external interface being further used to connect to a user device; the external interface being configured to receive a first input signal from the user device, and transmit the first input signal to the first operating system control unit, so that the first operating system control unit processes the first input signal, and transmits the processed signal to the display screen for display; A first switch, wherein a first input end of the first switch is used to connect to an input device, and a first output end of the first switch is connected to the first operating system control unit; a second switch, wherein a first input end of the second switch is connected to a second output end of the first switch, the second input end of the second switch is used to connect to the external interface, and a first output end of the second switch is connected to the external interface; Among them, the first switch is configured to, according to a first switching instruction, turn on the signal channel between the first switch and the second switch, so that the output signal of the input device is transmitted to the second switch through the first switch; the second switch is configured to, according to the first switching instruction, turn on the signal channel between the second switch and the external interface, so that the second switch transmits the received output signal to the user device through the external interface.

2. The signal switching system according to claim 1, characterized in that: It also includes a second operating system control unit, the second operating system control unit is connected to the first operating system control unit, and the second operating system control unit is connected to the third output end of the first switch; When the second operating system control unit is in a working state, the first switch is also configured to switch on a signal channel between the first switch and the second operating system control unit according to a second switching instruction, so that the output signal of the input device is transmitted to the second operating system control unit through the first switch.

3. The signal switching system according to claim 2, characterized in that: Also includes a third switch, wherein a first input end of the third switch is connected to a second output end of the second switch, a first output end of the third switch is connected to the first operating system control unit, and a second output end of the third switch is connected to the second operating system control unit; When the first operating system control unit is in a working state, the second switch switches on a signal channel between the second switch and the external interface, a signal channel between the second switch and the third switch, and switches on a signal channel between the third switch and the first operating system control unit according to a third switching instruction, so that the second input signal of the user device is transmitted to the first operating system control unit through the second switch and the third switch in sequence; When the second operating system control unit is in a working state, the second switch switches on the signal channel between the second switch and the external interface, the signal channel between the second switch and the third switch, and switches on the signal channel between the third switch and the second operating system control unit according to a fourth switching instruction, so that the second input signal of the user device is transmitted to the second operating system control unit through the second switch and the third switch in sequence.

4. The signal switching system according to claim 3, characterized in that: The external interface is a TYPEC interface; the first input signal is a DP signal, and the second input signal is a USB signal.

5. The signal switching system according to claim 4, characterized in that: When the first operating system control unit is in a working state, the first switch is also configured to, according to a fifth switching instruction, turn on the signal channel between the first switch and the first operating system control unit so that the output signal of the input device is transmitted to the first operating system control unit through the first switch.

6. The signal switching system according to any one of claims 3 to 5, characterized in that: Also included is a first hub connected between the input device and a first input terminal of the first switch.

7. The signal switching system according to claim 6, characterized in that: A second hub is also included, and the second hub is connected between the second output terminal of the second switch and the first input terminal of the third switch.

8. The signal switching system according to claim 7, characterized in that: The input device includes any one or any combination of the following: a camera module, a sound module and a touch module.

9. The signal switching system according to claim 8, characterized in that: The first operating system control unit is used to execute the Android operating system; the second operating system control unit is used to execute the Windows operating system.

10. A signal switching method performed by the signal switching system according to claim 1, characterized in that: include: Acquire a first input signal of a user device, process the first input signal, and transmit the processed signal to a display screen for display; Obtaining a switching request, and generating a first switching instruction according to the switching request; The first switching instruction is transmitted to the first switch and the second switch respectively; the first switching instruction is used to instruct the first switch to turn on the signal channel between the first switch and the second switch, so that the output signal of the input device is transmitted to the second switch through the first switch; the first switching instruction is also used to instruct the second switch to turn on the signal channel between the second switch and the external interface, so that the second switch transmits the received output signal to the user device through the external interface.

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