Interface conversion device, PC module and interactive panel

Abstract

The embodiment of the utility model discloses an interface conversion device, a PC (Personal Computer) module and an interactive tablet. The interface conversion device comprises a first switching module, at least two display interfaces and a first pin interface, the static end of the first switching module is connected with the first pin interface, and the at least two display interfaces are respectively connected with one movable end of the first switching module; the first switching module is used for generating a first control signal according to a received selection instruction, sending the first control signal to the first pin interface, and switching a target moving end connected with the static end according to the selection instruction; the first pin interface is used for being connected with a PC module so as to send a first control signal to the PC module and transmit signal data received from the PC module to the static end, the signal data is generated by the PC module according to the first control signal, and on the basis that an original pin interface of the PC module is kept, various display signals can be tested through the interface conversion device; and the production cost of the PC module with the multi-signal type function is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of interface conversion technology, and in particular to an interface conversion device, a PC module, and an interactive tablet. Background Art

[0002] The PC module and the interactive tablet are connected through a pin interface with a preset number of pins (e.g., 80P IN, 120P IN, 40P IN interfaces). The whole machine supplies power to the PC module or transmits audio and video signals through the pin interface. After the PC module is produced, it is necessary to test the PC module in advance to verify whether there are any abnormalities in its function. In the prior art, a test card is usually used to complete the test of the PC module.

[0003] In the past, the whole machine could only process HDMI signals, so the pin interface in the original PC module could only transmit HDMI signals. With the development of technology, the new whole machine can also process DP signals and EDP signals. If the signal processing capability of the new whole machine is upgraded, the corresponding standard output interface of DP signal and EDP signal is directly added to the PC module, which will cause a major change in the overall structure of the original PC module. For this reason, there is an urgent need for a PC module that can transmit DP signal and EDP signal while maintaining the original pin interface. At the same time, a corresponding test card is also needed, and the test card can complete the test of HDMI signal, DP signal and EDP signal. Utility Model Content

[0004] The embodiments of the present application provide an interface conversion device, a PC module and an interactive tablet, which can transmit a variety of display signals and test a variety of display signals while maintaining the original pin interface of the PC module.

[0005] The embodiment of the present application provides an interface conversion device, which is applied to an interactive tablet including a PC module and a display screen. Specifically, the interface conversion device includes a first switching module, at least two display interfaces and a first pin interface;

[0006] The static end of the first switching module is connected to the first pin interface, and the at least two display interfaces are respectively connected to a dynamic end of the first switching module; each of the at least two display interfaces is connected to a display interface of the display screen;

[0007] The first switching module is used to generate a first control signal according to the received selection instruction, send the first control signal to the first pin interface, and switch the target moving end connected to the static end according to the selection instruction;

[0008] The first pin interface is used to connect with the PC module to send the first control signal to the PC module and transmit the signal data received from the PC module to the static end, the signal data being generated by the PC module according to the first control signal.

[0009] As described above, by providing an interface conversion device with a first switching module to perform interface conversion of the output signal type of the PC module, a relatively low-cost first switching module can be used to implement testing of a variety of display signals through the interface conversion device while maintaining the original pin interface of the PC module. There is no need to make major changes to the overall structure of the original PC module, thereby reducing the cost of producing PC modules with multiple signal type functions.

[0010] In one embodiment, the first switching module includes a first switching switch and at least one gold pin jumper button;

[0011] The static end of the first switch is connected to the first pin interface, and the control end of the first switch is connected to the gold pin jumper button;

[0012] At least two display interfaces are connected to a movable end of the first switch;

[0013] The gold pin jumper button is used to generate a first control signal according to the received selection instruction, and send the first control signal to the control end and the first pin interface;

[0014] The first switch is used for switching the target moving end connected to the static end according to the first control signal received by the control end.

[0015] In the above, a first switching switch and at least one gold pin jumper button are arranged in the interface conversion device, so that the interface conversion device realizes the selection confirmation of the display interface based on the at least one gold pin jumper button, and switches the corresponding transmission channel based on the first switching switch to realize the switching of the display interface, so that the interface conversion function can be realized through the switching switch and the gold pin jumper button at a relatively low price, and a variety of display signals can be tested through the interface conversion device on the basis of maintaining the original pin interface of the PC module, without changing the overall structure of the original PC module, thereby reducing the cost of producing PC modules with multi-signal type functions.

[0016] In one embodiment, the first switching module includes a first switching switch and a first control chip;

[0017] The static end of the first switch is connected to the first pin interface, and the control end of the first switch is connected to the first control chip;

[0018] The first control chip is used to generate a first control signal according to the received selection instruction, and send the first control signal to the control terminal and the first pin interface;

[0019] The first switch is used for switching the target moving end connected to the static end according to a first control signal received from the control end.

[0020] As described above, the first switching switch and the first control chip are arranged in the interface conversion device, so that the interface conversion device can realize automatic switching of transmission channels based on the first control chip and the first switching switch, thereby improving the degree of automation of the PC module interface conversion. In addition, by realizing automatic switching of transmission channels through the first control chip and the first switching switch, it is possible to test a variety of display signals through the interface conversion device on the basis of maintaining the original pin interface of the PC module, without making major changes to the overall structure of the original PC module, thereby reducing the cost of producing PC modules with multiple signal type functions.

[0021] In one embodiment, the display interface includes an HDMI interface, a DP interface, and an EDP interface;

[0022] The HDMI interface, the DP interface and the EDP interface are respectively connected to a moving end of the first switching module.

[0023] In one embodiment, when the display interface includes an EDP interface, the interface conversion device further includes a backlight source module;

[0024] The input end of the backlight source module is connected to the control end of the first switching module or the gold pin jumper button or the first control chip;

[0025] The output end of the backlight source module is connected to the EDP interface;

[0026] The first switching module or the gold pin jumper button or the first control chip is also used to generate a backlight control signal according to the received selection instruction, and send the backlight control signal to the input end of the backlight light source module;

[0027] The backlight source module is used to perform backlight control on a display device connected to the EDP interface according to a backlight control signal.

[0028] As described above, when the control end of the first switching module or the gold pin jumper button or the first control chip determines to output signal data through the EDP interface, that is, when a selection instruction for selecting the EDP interface to output signal data is received, a corresponding backlight control signal is generated, and a corresponding backlight light source module is set in the interface conversion device. The backlight light source module performs backlight control on the display device connected to the EDP interface based on the backlight control signal, so that there is no need to change the overall structure of the PC module that is not originally provided with the EDP interface and the corresponding backlight light source module. On the basis of maintaining the original pin interface of the PC module, the backlight signal can be tested through the interface conversion device, thereby avoiding major changes to the overall structure of the original PC module, such as changes in the PCB board design and the addition of the backlight control module layout and the addition of the EDP output interface, etc., thereby reducing the cost of producing PC modules with multiple signal type functions.

[0029] In one embodiment, the interface conversion device further includes a power supply socket;

[0030] The power supply socket is connected to the first pin interface and the backlight light source module. The power supply socket is used to receive power supply energy and transmit the power supply energy to the first pin interface and the backlight light source module.

[0031] In one embodiment, the backlight source module includes a buck-boost submodule and a brightness control submodule;

[0032] The voltage input end of the buck-boost submodule is connected to the power supply socket, the voltage output end of the buck-boost submodule is connected to the EDP interface, and the control end of the buck-boost submodule is connected to the control end of the first switching module or the gold pin jumper button or the first control chip;

[0033] The input end of the brightness control submodule is connected to the control end of the first switching module or the gold pin jumper button or the first control chip, and the output end of the brightness control submodule is connected to the EDP interface;

[0034] The first switching module or the gold pin jumper button or the first control chip is also used to generate a first backlight control signal and a second backlight control signal according to the received selection instruction, and send the first backlight control signal to the control end of the buck-boost submodule, and send the second backlight control signal to the input end of the brightness control submodule;

[0035] The buck-boost submodule is used to receive the power supply energy provided by the power supply socket through the voltage input terminal, and perform buck-boost processing on the power supply energy according to the first backlight control signal received by the control terminal to obtain output power, and transmit the output power to the EDP interface through the voltage output terminal;

[0036] The brightness control submodule is used to perform backlight control on a display device connected to the EDP interface according to the received second backlight control signal.

[0037] The embodiment of the present application also provides a PC module, including a controller, a second switching module, and a second pin interface;

[0038] The static end and the control end of the second switching module are both connected to the second pin interface, and at least two first signal output ports of the controller are respectively connected to a dynamic end of the second switching module;

[0039] The control terminal and the second signal output port of the controller are both connected to the second pin interface;

[0040] The second pin interface is used to connect with the interface conversion device to transmit the first control signal received from the interface conversion device to the control end of the controller and the control end of the second switching module, and send the first signal data received from the static end of the second switching module and the second signal data received from the second signal output port of the controller to the interface conversion device;

[0041] The controller is used to send the generated first signal data to the active end of the second switching module through the corresponding first signal output port according to the first control signal received by the control end thereof, and send the generated second signal data to the second pin interface through the second signal output port according to the first control signal;

[0042] The second switching module is used for switching the target moving end to which its static end is connected according to the first control signal received by its control end.

[0043] As described above, by adding a relatively low-priced second switching module to the PC module, it is possible to transmit multiple display signals while maintaining the original pin interface of the PC module, avoiding major changes to the overall structure of the original PC module, such as changes to the PCB board design, thereby reducing the cost of producing PC modules with multiple signal type functions.

[0044] In one embodiment, the second switching module includes a second switching switch and a second control chip;

[0045] The static end of the second switch is connected to the second pin interface, the control end of the second switch is connected to the first control output end of the second control chip, and at least two first signal output ports of the controller are respectively connected to a dynamic end of the second switch;

[0046] The second control output terminal of the second control chip is connected to the control terminal of the controller;

[0047] The control input terminal of the second control chip is connected to the second pin interface;

[0048] The second pin interface is used to transmit the first control signal received from the interface conversion device to the control input end of the second control chip, and to send the first signal data received from the static end of the second switch and the second signal data received from the second signal output port of the controller to the interface conversion device;

[0049] The second control chip is used for transmitting the first control signal received at its control input terminal to the control terminal of the second switch through its first control output terminal, and transmitting to the control terminal of the controller through its second control output terminal;

[0050] The controller is used to send the generated first signal data to the active end of the second switch through the corresponding first signal output port according to the first control signal received by the control end thereof, and send the generated second signal data to the second pin interface through the second signal output port according to the first control signal;

[0051] The second switching module is used for switching the target moving end connected to the static end according to the first control signal of the control end.

[0052] As described above, by adding a relatively low-priced second switching switch to the PC module, it is possible to transmit multiple display signals while maintaining the original pin interface of the PC module, avoiding major changes to the overall structure of the original PC module, such as changes to the PCB board design, thereby reducing the cost of producing PC modules with multiple signal type functions. In addition, by setting the first control chip in the PC module to realize automatic switching of the second switching switch, the degree of automation of the PC module switching signal data transmission channel is improved. In addition, by realizing automatic switching of the signal data transmission channel through the second control chip and the second switching switch, there is no need to make major changes to the overall structure of the original PC module, thereby reducing the cost of producing PC modules with multiple signal type functions.

[0053] The embodiment of the present application also provides an interactive tablet, including the above-mentioned PC module.

[0054] The interface conversion device, PC module and interactive tablet provided in the embodiments of the present application have the following beneficial effects:

[0055] The interface conversion of the output signal type of the PC module is performed by an interface conversion device provided with a first switching module. The low-cost first switching module can be used to test various display signals through the interface conversion device while maintaining the original pin interface of the PC module. There is no need to make major changes to the overall structure of the original PC module, thereby reducing the cost of producing PC modules with multiple signal type functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1It is a first structural schematic diagram of an interface conversion device provided in an embodiment of the present application.

[0057] Figure 2 is a second structural schematic diagram of an interface conversion device provided in an embodiment of the present application;

[0058] Figure 3 is a third structural schematic diagram of an interface conversion device provided in an embodiment of the present application;

[0059] Figure 4 is a structural schematic diagram of a backlight source module provided in an embodiment of the present application;

[0060] Figure 5 is a first structural schematic diagram of a PC module provided in an embodiment of the present application;

[0061] Figure 6 is a second structural schematic diagram of a PC module provided in an embodiment of the present application;

[0062] Figure 7 is a third structural schematic diagram of a PC module provided in an embodiment of the present application;

[0063] Figure 8 is a first structural schematic diagram of an interactive tablet provided in an embodiment of the present application;

[0064] Fig. 9 is a second structural schematic diagram of an interactive tablet provided in an embodiment of the present application;

[0065] Fig.10 is a third structural schematic diagram of an interactive tablet provided in an embodiment of the present application;

[0066] Fig.11 This is a fourth structural diagram of an interactive tablet provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0068] With the development of technology, the interactive flat panel can process not only HDMI signals, but also DP signals and EDP signals. If the signal processing capability of the new whole machine is upgraded, the corresponding standard output interface of DP signal and EDP signal can be directly added to the PC module, which will lead to a major change in the overall structure of the original PC module.

[0069] Therefore, a PC module that can transmit DP signal and EDP signal while maintaining the original pin interface is urgently needed. At the same time, a corresponding test card is also needed, and the test card can complete the test of HDMI signal, DP signal and EDP signal.

[0070] The present application performs interface conversion of the output signal type of the PC module by providing an interface conversion device with a first switching module (the interface conversion device is applied to an interactive flat panel including a PC module and a display screen). By using the first switching module with a relatively low cost, it is possible to test a variety of display signals through the interface conversion device while maintaining the original pin interface of the PC module. There is no need to make major changes to the overall structure of the original PC module, thereby reducing the cost of producing PC modules with multiple signal type functions.

[0071] Figure 1 It is a first structural schematic diagram of an interface conversion device provided in an embodiment of the present application.

[0072] like Figure 1 As shown, the interface conversion device 11 includes a first switching module 111, at least two display interfaces 112 and a first pin interface 113. The static end of the first switching module 111 is connected to the first pin interface 113, and the at least two display interfaces 112 are respectively connected to a dynamic end of the first switching module 111. Each of the at least two display interfaces 112 is connected to a display interface of the display screen.

[0073] The first switching module 111 is used to generate a first control signal according to the received selection instruction, send the first control signal to the first pin interface 113, and switch the target moving end connected to the static end according to the selection instruction.

[0074] The first pin interface 113 is used to connect with the PC module 12 to send the first control signal to the PC module 12 and transmit the signal data received from the PC module 12 to the static end, the signal data being generated by the PC module 12 according to the first control signal.

[0075] After the static end of the first switching module 111 receives the signal data, the first switching module 111 switches the target dynamic end connected to the static end according to the selection instruction. Therefore, the first switching module 111 transmits the signal data received by the static end to the corresponding display interface 112 through the target dynamic end, so as to realize the switching of the display interface 112, so that the signal data sent by the PC module 12 can be transmitted to the corresponding display interface 112 according to the actual selection instruction. Compared with the existing PC module 12 which only has an interface for transmitting HDMI signals, the present application performs interface conversion of the output signal type of the PC module 12 by providing an interface conversion device 11 with the first switching module 111. The interface type of the PC module 12 can be expanded by using the first switching module 111 with a relatively low cost. On the basis of maintaining the original pin interface of the PC module 12, multiple display signals can be tested by the interface conversion device 11. There is no need to make major changes to the overall structure of the original PC module 12, such as no need to change the PCB board design of the PC module 12 and the addition of external interfaces, so as to avoid adding large additional costs, thereby reducing the cost of producing PC modules 12 with multiple signal type functions.

[0076] It should be noted that the interface conversion device 11 can be used as a test card to achieve the test function. In the actual use of the PC module 12, the interface conversion device 11 can also be used as a switching device between the PC module 12 and a corresponding complete machine (such as a display device) with a DP signal and an EDP signal standard interface, that is, the PC module 12 is connected to the corresponding complete machine (such as a display device) through the interface conversion device 11.

[0077] In one embodiment, the display interface 112 includes an HDMI interface, a DP interface, and an EDP interface.

[0078] The HDMI interface, the DP interface and the EDP interface are connected to a moving end of the first switching module 111 respectively.

[0079] Exemplarily, when it is necessary to output corresponding DP signal data through the DP interface, the user can input a corresponding selection instruction through the first switching module 111. The first switching module 111 is used to generate a first control signal according to the received selection instruction, send the first control signal to the first pin interface 113, and switch the target dynamic end connected to the static end according to the selection instruction. That is, the target dynamic end at this time is the dynamic end connected to the DP interface, and thus the first switching module 111 forms a state in which the static end and the DP interface are connected.

[0080] The first pin interface 113 is used to connect with the PC module 12 to send the first control signal to the PC module 12. The PC module 12 generates DP signal data according to the received first control signal, and transmits it to the static end of the first switching module 111 through the first pin interface 113.

[0081] Based on the fact that the static end of the first switching module 111 is in a state of being connected to the DP interface at this time, after the static end of the first switching module 111 receives the DP signal data, it transmits it to the DP interface through the target dynamic end, thereby outputting the corresponding DP signal data to the corresponding display device through the DP interface.

[0082] Compared with the existing PC module 12 that only has an interface for transmitting HDMI signals, the present application uses an interface conversion device 11 provided with a first switching module 111 to convert the interface type of the output signal of the PC module 12, such as switching to a DP interface. The first switching module 111 with a relatively low cost can be used to test a variety of display signals through the interface conversion device 11 while maintaining the original pin interface of the PC module 12, without making major changes to the overall structure of the original PC module 12. For example, there is no need to change the PCB board design of the PC module 12 and the addition of external interfaces, thereby avoiding the increase of large additional costs, thereby reducing the cost of producing PC modules 12 with multiple signal type functions.

[0083] Figure 2 This is a second structural schematic diagram of an interface conversion device provided in an embodiment of the present application.

[0084] Reference Figure 2 The first switching module 111 includes a first switching switch 111a and at least one gold pin jump cap button 111b.

[0085] Among them, the gold needle jump cap button 111b is used to receive the user's selection instruction. In this application, a gold needle jump cap button 111b may correspond to a display interface 112, and the user can select the corresponding display interface 112 by pressing or toggling the gold needle jump cap button 111b, and the pressing operation or toggling operation is the corresponding selection instruction. For example, the display interface 112 includes an HDMI interface, a DP interface, and an EDP interface, and the corresponding gold needle jump cap button 111b is button A, button B, and button C. When button A is pressed or toggled, it represents the selection of the HDMI interface output; when button B is pressed or toggled, it represents the selection of the DP interface output; when button C is pressed or toggled, it represents the selection of the EDP interface output. Generate a corresponding first control signal according to the selection instruction. The first control signal may be a GIPO signal, for example, the first control signal (i.e., GIPO signal) corresponding to the HDMI interface output is 00, the first control signal (i.e., GIPO signal) corresponding to the DP interface output is 10, and the first control signal (i.e., GIPO signal) corresponding to the EDP interface output is 01.

[0086] The static end of the first switch 111a is connected to the first pin interface 113, and the control end of the first switch 111a is connected to the gold pin jumper button 111b. At least two display interfaces 112 are connected to a dynamic end of the first switch 111a.

[0087] The gold pin jumper button 111 b is used to generate a first control signal according to the received selection instruction, and send the first control signal to the control end and the first pin interface 113 .

[0088] The first switch 111a is used to switch the target moving end connected to the static end according to the first control signal received by the control end.

[0089] For example, when the corresponding DP signal data needs to be output through the DP interface, the user can receive the corresponding selection instruction through the corresponding gold pin jumper button 111b (such as button B) and generate a first control signal, such as a GPIO signal 10.

[0090] The gold pin jumper button 111 b sends the first control signal (GPIO signal 10 ) to the first pin interface 113 and the control end of the first switch 111 a .

[0091] The first switching switch 111a switches the target dynamic end connected to the static end according to the first control signal (GPIO signal 10) received by its control end, that is, the target dynamic end at this time is the dynamic end connected to the DP interface, so the first switching switch 111a forms a state in which the static end and the DP interface are connected.

[0092] The first pin interface 113 is used to connect with the PC module 12 to send the first control signal (GPIO signal 10) to the PC module 12. The PC module 12 generates DP signal data according to the received first control signal (GPIO signal 10), and transmits it to the static end of the first switch 111a through the first pin interface 113. Since the static end of the first switch 111a is in a state of being connected to the DP interface at this time, after the static end of the first switch 111a receives the DP signal data, it is transmitted to the DP interface through the target dynamic end, so as to output the corresponding DP signal data to the corresponding display device through the DP interface. Compared with the existing PC module 12 which only has an interface for transmitting HDMI signals, the interface conversion device 11 provided with the first switching switch 111a and the gold pin jumper button 111b performs interface conversion of the output signal type of the PC module 12, for example, switching to the DP interface. The interface type of the PC module 12 can be expanded through the first switching switch 111a and the gold pin jumper button 111b of relatively low cost, and can test a variety of display signals through the interface conversion device 11 on the basis of maintaining the original pin interface of the PC module 12, without making major changes to the overall structure of the original PC module 12. For example, there is no need to change the PCB board design of the PC module 12 and the addition of external interfaces, etc., to avoid adding large additional costs, thereby reducing the cost of producing the PC module 12 with multiple signal type functions.

[0093] As described above, a first switching switch 111a and at least one gold pin jumper button 111b are provided in the interface conversion device 11, so that the interface conversion device 11 realizes the selection confirmation of the display interface 112 based on the at least one gold pin jumper button 111b, and switches the corresponding transmission channel based on the first switching switch 111a to realize the switching of the display interface 112, so that the interface conversion function can be realized through the relatively low-priced switching switch and the gold pin jumper button 111b, without changing the overall structure of the original PC module 12, thereby reducing the cost of producing the PC module 12 with multiple signal type functions.

[0094] Figure 3 This is a third structural schematic diagram of an interface conversion device provided in an embodiment of the present application.

[0095] Reference Figure 3 The first switching module 111 includes a first switching switch 111a and a first control chip 111c. The first control chip 111c is used to realize automation, and can preset an execution strategy, and generate a corresponding first control signal according to the preset execution strategy, so that the interface conversion device 11 can perform a corresponding receiving conversion operation according to the first control signal.

[0096] For example, the display interface 112 includes an HDMI interface, a DP interface, and an EDP interface, and the preset execution strategy is to sequentially output the HDMI interface, the DP interface, and the EDP interface, so the first control chip 111c can be used to generate the corresponding first control signal once according to the preset execution strategy. The first control signal can be a GIPO signal, for example, the first control signal (i.e., GIPO signal) corresponding to the HDMI interface output is selected as 00, the first control signal (i.e., GIPO signal) corresponding to the DP interface output is selected as 10, and the first control signal (i.e., GIPO signal) corresponding to the EDP interface output is selected as 01. For example, the first control chip 111c generates GIPO signal 00, GIPO signal 10, and GIPO signal 01 in sequence based on the trigger of the preset execution strategy (which can be a selection instruction), so that the interface conversion device 11 sequentially performs the transmission of corresponding signal data and interface switching according to GIPO signal 00, GIPO signal 10, and GIPO signal 01.

[0097] The static end of the first switch 111a is connected to the first pin interface 113, and the control end of the first switch 111a is connected to the first control chip 111c.

[0098] The first control chip 111 c is used for generating a first control signal according to the received selection instruction, and sending the first control signal to the control terminal and the first pin interface 113 .

[0099] The first switch 111a is used to switch the target moving end connected to the static end according to a first control signal received from the control end.

[0100] For example, when the corresponding DP signal data needs to be output through the DP interface, the user can receive the corresponding selection instruction (which may be the selection instruction generated by the preset execution strategy) through the first control chip 111c, and generate the corresponding first control signal according to the first selection instruction, such as the GPIO signal 10.

[0101] The first control chip 111c sends the first control signal (GPIO signal 10) to the first pin interface 113 and the control end of the first switching switch 111a. The first switching switch 111a switches the target moving end connected to the static end according to the first control signal (GPIO signal 10) received by its control end, that is, the target moving end at this time is the moving end connected to the DP interface, so the first switching switch 111a forms a state where the static end and the DP interface are connected. The first pin interface 113 is used to connect to the PC module 12 to send the first control signal (GPIO signal 10) to the PC module 12, and the PC module 12 generates DP signal data according to the received first control signal (GPIO signal 10), and transmits it to the static end of the first switching switch 111a through the first pin interface 113.

[0102] Based on the fact that the first switching switch 111a at this time is in a state where the static end and the DP interface are turned on, after the static end of the first switching switch 111a receives the DP signal data, it is transmitted to the DP interface through the target dynamic end, so as to output the corresponding DP signal data to the corresponding display device through the DP interface. Compared with the existing PC module 12 which only has an interface for transmitting HDMI signals, the interface conversion device 11 provided with the first switching switch 111a and the first control chip 111c performs interface conversion of the output signal type of the PC module 12, for example, switches to the DP interface, so that the interface conversion device realizes automatic switching of the transmission channel based on the first control chip 111c and the first switching switch 111a, thereby improving the degree of automation of the interface conversion of the PC module 12.

[0103] In addition, the first control chip 111c and the first switching switch 111a are used to realize automatic switching of transmission channels. On the basis of maintaining the original pin interface of the PC module 12, various display signals can be tested through the interface conversion device 11. There is no need to make major changes to the overall structure of the original PC module 12. For example, there is no need to change the PCB board design of the PC module 12 and the addition of external interfaces, thereby avoiding the increase of large additional costs, thereby reducing the cost of producing PC modules 12 with multi-signal type functions.

[0104] In one embodiment, the first control chip 111 c is connected to the first pin interface 113 via a serial port.

[0105] In one embodiment, when the display interface 112 includes an EDP interface, refer to Figure 1-3 The interface conversion device 11 also includes a backlight source module 114 .

[0106] The input end of the backlight source module 114 is connected to the control end of the first switching module 111 or the gold pin jumper button 111b or the first control chip 111c. The output end of the backlight source module 114 is connected to the EDP interface. The first switching module 111 or the gold pin jumper button 111b or the first control chip 111c are also used to generate a backlight control signal according to the received selection instruction, and send the backlight control signal to the input end of the backlight source module 114. The backlight control signal includes a VDDEN signal, an EDP_BKLTEN signal and an EDP_BKLTCTL signal, and the aforementioned three backlight control signals can be simulated by a GPIO signal, for example, a GPIO signal 00 represents a VDDEN signal, a GPIO signal 10 represents an EDP_BKLTEN signal, and a GPIO signal 00 represents an EDP_BKLTCTL signal. The backlight source module 114 is used to perform backlight control on a display device connected to the EDP interface according to the backlight control signal.

[0107] As mentioned above, when the control end of the first switching module 111 or the gold pin jumper button 111b or the first control chip 111c determines to output signal data through the EDP interface, that is, when a selection instruction for selecting the output signal data of the EDP interface is received, a corresponding backlight control signal is generated, and a corresponding backlight light source module 114 is set in the interface conversion device 11. The backlight light source module 114 performs backlight control on the display device connected to the EDP interface based on the backlight control signal, so that there is no need to change the overall structure of the PC module 12 that is not originally provided with the EDP interface and the corresponding backlight light source module 114. On the basis of maintaining the original pin interface of the PC module 12, the backlight control signal can be tested through the interface conversion device 11, avoiding major changes to the overall structure of the original PC module 12, such as changes in the PCB board design and the addition of the layout of the backlight control module and the addition of the EDP output interface, etc., thereby reducing the cost of producing PC modules 12 with multiple signal type functions.

[0108] In one embodiment, referring to Figure 1-3 , the interface conversion device 11 also includes a power supply socket 115. The power supply socket 115 is connected to the first pin interface 113 and the backlight light source module 114, and the power supply socket 115 is used to access the power supply energy and transmit the power supply energy to the first pin interface 113 and the backlight light source module 114. Among them, there is a corresponding power supply pin in the first pin interface 113, and the power supply socket 115 is connected to the corresponding power supply pin in the first pin interface 113. Based on the fact that the first pin interface 113 is used to connect to the PC module 12, the power supply energy of the power supply socket 115 provides power supply energy to the PC module 12 through the power supply pin of the first pin interface 113. In addition, the power supply socket 115 transmits the power supply energy to the backlight light source module 114, so that the backlight power supply can perform backlight control on the display device connected to the EDP interface according to the power supply energy and the backlight control signal.

[0109] Figure 4 It is a structural schematic diagram of a backlight source module provided in an embodiment of the present application.

[0110] Reference Figure 1-4 The backlight source module 114 includes a buck-boost submodule 114a and a brightness control submodule 114b.

[0111] The first switching module 111 or the gold needle jump cap button 111b or the first control chip 111c are also used to generate a first backlight control signal and a second backlight control signal according to the received selection instruction, and send the first backlight control signal to the control end of the buck-boost submodule 114a, and send the second backlight control signal to the input end of the brightness control submodule 114b.

[0112] The voltage input end of the buck-boost submodule 114a is connected to the power supply socket 115, the voltage output end of the buck-boost submodule 114a is connected to the EDP interface, and the control end of the buck-boost submodule 114a is connected to the control end of the first switching module 111 or the gold pin jumper button 111b or the first control chip 111c.

[0113] The control end of the buck-boost submodule 114a is used to receive a first backlight control signal sent by the control end of the first switching module 111 or the gold pin jumper button 111b or the first control chip 111c. The first backlight control signal is a backlight power supply enable signal.

[0114] The buck-boost submodule 114a is used to receive the power supply energy provided by the power supply socket 115 through its voltage input terminal, and to buck-boost the power supply energy according to the first backlight control signal received by the control terminal to obtain output power, and to transmit the output power to the EDP interface through the voltage output terminal.

[0115] For example, the power supply energy received at the input end of the buck-boost submodule 114a is 19V power supply energy. Assuming that the first backlight control signal enables the buck-boost submodule 114a to perform a voltage reduction process, the buck-boost submodule 114a performs a voltage reduction process on the received 19V power supply energy according to the first backlight control signal received at its control end to obtain a 12V output voltage (i.e., a backlight power supply voltage). The buck-boost submodule 114a transmits the 12V output voltage to the EDP interface, so that the EDP interface provides backlight power supply (i.e., 12V backlight power supply) for the corresponding display device.

[0116] The input end of the brightness control submodule 114b is connected to the control end of the first switching module 111 or the gold pin jump cap button 111b or the first control chip 111c, and the output end of the brightness control submodule 114b is connected to the EDP interface. The input end of the brightness control submodule 114b is used to receive the second backlight control signal sent by the control end of the first switching module 111 or the gold pin jump cap button 111b or the first control chip 111c. The second backlight control signal is a backlight brightness adjustment signal, including a VDDEN signal, an EDP_BKLTEN signal, and an EDP_BKLTCTL signal.

[0117] The brightness control submodule 114b is used to perform backlight control on the display device connected to the EDP interface according to the received second backlight control signal.

[0118] As described above, when the control end of the first switching module 111 or the gold pin jumper button 111b or the first control chip 111c determines to output the signal data through the EDP interface, that is, when a selection instruction for selecting the output signal data of the EDP interface is received, a corresponding backlight control signal is generated, and a corresponding backlight source module 114 is set in the interface conversion device 11. The buck-boost submodule 114a in the backlight source module 114 performs power supply enable control based on the first backlight control signal, so that the backlight source module 114 outputs the backlight power supply of the corresponding voltage value to the EDP interface, and provides backlight power supply for the display device connected to the EDP interface. By using the brightness control submodule 114b in the backlight light source module 114 to control the backlight of the display device connected to the EDP interface based on the second backlight control signal, the backlight control signal can be tested through the interface conversion device 11 while maintaining the original pin interface of the PC module 12, so that there is no need to change the overall structure of the PC module 12 that is not originally provided with the EDP interface and the corresponding backlight light source module 114, thereby avoiding major changes to the overall structure of the original PC module 12, such as changes in the PCB board design, adding a layout of the backlight control module, and adding changes to the EDP output interface, etc., thereby reducing the cost of producing PC modules 12 with multi-signal type functions.

[0119] This embodiment also provides a PC module. Figure 5 This is a first structural schematic diagram of a PC module provided in an embodiment of the present application.

[0120] Reference Figure 5 The PC module 12 includes a controller 121, a second switching module 122, and a second pin interface 123. The static end and the control end of the second switching module 122 are both connected to the second pin interface 123, and at least two first signal output ports of the controller 121 are respectively connected to a dynamic end of the second switching module 122.

[0121] For example, the controller 121 has two first signal output ports, namely a DDC port and an AUX port, wherein the DDC port is used to output the first signal data in the HDMI format, and the AUX port is used to output the first signal data in the DP format or the EDP format.

[0122] The DDC port and the AUX port of the controller 121 are respectively connected to a movable end of the second switching module 122. The control end and the second signal output port of the controller 121 are both connected to the second pin interface 123.

[0123] The second pin interface 123 is used to connect to the first pin interface 113 of the interface conversion device 11, so as to transmit the first control signal received from the interface conversion device 11 to the control end of the controller 121 and the control end of the second switching module 122, and to send the first signal data received from the static end of the second switching module 122 and the second signal data received from the second signal output port of the controller 121 to the interface conversion device 11.

[0124] The controller 121 is used to send the generated first signal data to the active end of the second switching module 122 through the corresponding first signal output port according to the first control signal received by its control end, and send the generated second signal data to the second pin interface 123 through the second signal output port according to the first control signal.

[0125] The second switching module 122 is used for switching the target dynamic end connected to its static end according to the first control signal received by its control end, so that the first signal data received from the target dynamic end is transmitted to the second pin interface 123 through its static end.

[0126] It should be noted that the signal data received by the interface conversion device 11 and transmitted by the PC module 12 based on the first control signal includes the first signal data and the second signal data.

[0127] The first signal data may be understood as an auxiliary signal, and the second signal data may be understood as a display signal.

[0128] Exemplarily, when the corresponding DP signal data needs to be output through the DP interface, based on the method provided in the above embodiment, the interface conversion device 11 sends the corresponding first control signal to the second pin interface 123 of the PC module 12 through the first pin interface 113. For example, if the first control signal corresponding to the DP interface is GIPO signal 10, the PC module 12 receives the first control signal (i.e., GIPO signal 10) based on the second pin interface 123, and sends the first control signal (i.e., GIPO signal 10) to the control end of the second switching module 122 and the control end of the controller 121. The controller 121 generates AUX signal data (i.e., first signal data) and DP display signal data (i.e., second signal data) corresponding to the DP signal data according to the first control signal (i.e., GIPO signal 10) received at its control end. The controller 121 outputs AUX signal data to the corresponding active end of the second switching module 122 through the AUX port. The second switching module 122 switches the target active end connected to its static end according to the first control signal (i.e., GIPO signal 10) received by its control end, that is, the target active end at this time is the active end connected to the AUX port, so the second switching module 122 forms a state in which the static end is connected to the AUX port. The AUX signal data is transmitted to the second pin interface 123 through the second switching module 122. The controller 121 outputs DP display signal data to the second pin interface 123 through the second signal output port. The second pin interface 123 transmits the received DP signal data (including AUX signal data and DP display signal data) to the first pin interface 113 of the aforementioned interface conversion device 11. The interface conversion device 11 transmits the DP signal data to the DP interface based on the aforementioned implementation method, so as to output the corresponding DP signal data to the corresponding display device through the DP interface.

[0129] In one embodiment, the PC module 12 may also be directly connected to the corresponding display device through the second pin interface 123, and send the corresponding signal data (eg, DP signal data) to the display device through the second pin interface 123 according to the first control signal (eg, GIPO signal 10) sent by the display device.

[0130] As mentioned above, by adding a relatively low-priced second switching module 122 in the PC module 12, the output switching of different types of signal data can be realized, and multiple display signals can be transmitted on the basis of maintaining the original pin interface of the PC module 12, thereby avoiding major changes to the overall structure of the original PC module 12, such as changes to the PCB board design and changes to the addition of standard interfaces, thereby reducing the cost of producing PC modules 12 with multi-signal type functions.

[0131] Figure 6 This is a second structural schematic diagram of a PC module provided in an embodiment of the present application.

[0132] Reference Figure 6 The second switching module 122 includes a second switch 122 a . The static end of the second switch 122 a is connected to the second pin interface 123 , and the control end of the second switch 122 a is connected to the second pin interface 123 .

[0133] At least two first signal output ports of the controller 121 are respectively connected to a moving end of the second switch 122a. The control end of the controller 121 is connected to the second pin interface 123. The second pin interface 123 is used to transmit the first control signal received from the interface conversion device 11 to the control end of the controller 121 and the control end of the second switch 122a, and send the first signal data received from the static end of the second switch 122a and the second signal data received from the second signal output port of the controller 121 to the interface conversion device 11.

[0134] The controller 121 is used to send the generated first signal data to the active end of the second switching switch 122a through the corresponding first signal output port according to the first control signal received by its control end, and send the generated second signal data to the second pin interface 123 through the second signal output port according to the first control signal.

[0135] The second switch 122a is used for switching the target dynamic end connected to its static end according to the first control signal of its control end, so that the first signal data received from the target dynamic end is transmitted to the second pin interface 123 through its static end.

[0136] Figure 7 This is a third structural schematic diagram of a PC module provided in an embodiment of the present application.

[0137] Reference Figure 7 The second switching module 122 includes a second switching switch 122a and a second control chip 122b. The static end of the second switching switch 122a is connected to the second pin interface 123, the control end of the second switching switch 122a is connected to the first control output end of the second control chip 122b, and at least two first signal output ports of the controller 121 are respectively connected to a dynamic end of the second switching switch 122a.

[0138] The second control output terminal of the second control chip 122b is connected to the control terminal of the controller 121; the control input terminal of the second control chip 122b is connected to the second pin interface 123. The second pin interface 123 is used to transmit the first control signal received from the interface conversion device 11 to the control input terminal of the second control chip 122b, and send the first signal data received from the static terminal of the second switch 122a and the second signal data received from the second signal output port of the controller 121 to the interface conversion device 11.

[0139] The second control chip 122b is used to transmit the first control signal received at its control input terminal to the control terminal of the second switch 122a through its first control output terminal, and transmit the control terminal of the controller 121 through its second control output terminal. The controller 121 is used to send the generated first signal data to the active terminal of the second switch 122a through the corresponding first signal output port according to the first control signal received at its control terminal, and send the generated second signal data to the second pin interface 123 through the second signal output port according to the first control signal.

[0140] The second switch 122a is used for switching the target dynamic end connected to its static end according to the first control signal of its control end, so that the first signal data received from the target dynamic end is transmitted to the second pin interface 123 through its static end.

[0141] Exemplarily, when the corresponding DP signal data needs to be output through the DP interface, based on the method provided in the above-mentioned embodiment, the interface conversion device 11 sends the corresponding first control signal to the second pin interface 123 of the PC module 12 through the first pin interface 113.

[0142] For example, if the first control signal corresponding to the DP interface is GIPO signal 10, the PC module 12 receives the first control signal (i.e., GIPO signal 10) based on the second pin interface 123, and sends the first control signal (i.e., GIPO signal 10) to the control input end of the second control chip 122b. The second control chip 122b is used to send the first control signal (i.e., GIPO signal 10) received at its control input end to the control end of the second switch 122a through its first control output end, and the second control chip 122b is also used to send the first control signal (i.e., GIPO signal 10) received at its control input end to the control end of the controller 121 through its second control output end. The controller 121 generates AUX signal data (i.e., first signal data) and DP display signal data (i.e., second signal data) corresponding to the DP signal data according to the first control signal (i.e., GIPO signal 10) received at its control end. The controller 121 outputs the AUX signal data to the active end corresponding to the second switch 122a through the AUX port. The second switch 122a switches the target moving end connected to the static end according to the first control signal (i.e., GIPO signal 10) received by the control end thereof, i.e., the target moving end at this time is the moving end connected to the AUX port, so that the second switch 122a forms a state in which the static end is connected to the AUX port. The AUX signal data is transmitted to the second pin interface 123 through the second switch 122a. The controller 121 outputs the DP display signal data to the second pin interface 123 through the second signal output port. The second pin interface 123 transmits the received DP signal data (including the AUX signal data and the DP display signal data) to the first pin interface 113 of the aforementioned interface conversion device 11.

[0143] The interface conversion device 11 transmits the DP signal data to the DP interface based on the aforementioned implementation manner, so as to output the corresponding DP signal data to the corresponding display device through the DP interface. Compared with the existing PC module 12 which only has an interface for transmitting HDMI signals, the present application performs output switching of different types of signal data of the PC module 12 by providing a second switching switch 122a and a second control chip 122b, for example, switching the output DP signal data, so that the PC module 12 can automatically switch the transmission channel based on the first control chip 111c and the first switching switch 111a, thereby improving the degree of automation of the interface conversion of the PC module 12.

[0144] In addition, by adding a relatively low-priced second switching switch 122a in the PC module 12, output switching of different types of signal data can be achieved, thereby realizing the transmission of multiple display signals on the basis of maintaining the original pin interface of the PC module 12, avoiding major changes to the overall structure of the original PC module 12, such as changes to the PCB board design and changes to the addition of standard interfaces, thereby reducing the cost of producing PC modules 12 with multiple signal type functions.

[0145] In one embodiment, the PC module 12 may also be directly connected to the corresponding display device through the second pin interface 123, and send the corresponding signal data (eg, DP signal data) to the display device through the second pin interface 123 according to the first control signal (eg, GIPO signal 10) sent by the display device.

[0146] The embodiment of the present application also provides an interactive tablet, including the above-mentioned interface conversion device and a PC module. Figure 8-Figure 11 The interactive tablet has the same functional effects as the aforementioned interface conversion device and PC module. Figure 8-Figure 11 For an introduction to , please refer to the above description, which will not be repeated here.

[0147] As mentioned above, the interface conversion device, PC module and interactive flat panel provided in the embodiments of the present application perform interface conversion of the PC module output signal type through an interface conversion device provided with a first switching module. The low-cost first switching module can be used to test multiple display signals through the interface conversion device while maintaining the original pin interface of the PC module. There is no need to make major changes to the overall structure of the original PC module, thereby reducing the cost of producing PC modules with multiple signal type functions.

[0148] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0149] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0150] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0151] It should be noted that, in the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0152] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An interface conversion device, characterized in that: The interface conversion device is applied to an interactive tablet including a PC module and a display screen, and the interface conversion device includes a first switching module, at least two display interfaces and a first pin interface; The static end of the first switching module is connected to the first pin interface, and the at least two display interfaces are respectively connected to a dynamic end of the first switching module; each of the at least two display interfaces is connected to a display interface of the display screen; The first switching module is used to generate a first control signal according to the received selection instruction, send the first control signal to the first pin interface, and switch the target moving end connected to the static end according to the selection instruction; The first pin interface is used to connect with the PC module to send the first control signal to the PC module and transmit signal data received from the PC module to the static end, wherein the signal data is generated by the PC module according to the first control signal.

2. The interface conversion device according to claim 1, characterized in that: The first switching module includes a first switching switch and at least one gold pin jumper button; The static end of the first switch is connected to the first pin interface, and the control end of the first switch is connected to the gold pin jumper button; The at least two display interfaces are connected to a movable end of the first switch; The gold pin jump cap button is used to generate a first control signal according to the received selection instruction, and send the first control signal to the control end and the first pin interface; The first switch is used to switch the target moving end connected to the static end according to the first control signal received by the control end.

3. The interface conversion device according to claim 1, characterized in that: The first switching module includes a first switching switch and a first control chip; The static end of the first switch is connected to the first pin interface, and the control end of the first switch is connected to the first control chip; The first control chip is used to generate a first control signal according to the received selection instruction, and send the first control signal to the control terminal and the first pin interface; The first switch is used to switch the target moving end connected to the static end according to the first control signal received from the control end.

4. The interface conversion device according to any one of claims 1 to 3, characterized in that , the display interface includes an HDMI interface, a DP interface and an EDP interface; The HDMI interface, the DP interface and the EDP interface are respectively connected to a moving end of the first switching module.

5. The interface conversion device according to claim 4, characterized in that: When the display interface includes an EDP interface, the interface conversion device further includes a backlight source module; The input end of the backlight source module is connected to the control end of the first switching module or the gold pin jumper button or the first control chip; The output end of the backlight light source module is connected to the EDP interface; The first switching module or the gold pin jumper button or the first control chip are also used to generate a backlight control signal according to the received selection instruction, and send the backlight control signal to the input end of the backlight light source module; The backlight light source module is used to perform backlight control on a display device connected to the EDP interface according to the backlight control signal.

6. The interface conversion device according to claim 5, characterized in that: The interface conversion device also includes a power supply seat; The power supply socket is connected to the first pin interface and the backlight light source module, and the power supply socket is used to receive power supply energy and transmit the power supply energy to the first pin interface and the backlight light source module.

7. The interface conversion device according to claim 6, characterized in that: The backlight source module includes a buck-boost submodule and a brightness control submodule; The voltage input end of the buck-boost submodule is connected to the power supply socket, the voltage output end of the buck-boost submodule is connected to the EDP interface, and the control end of the buck-boost submodule is connected to the control end of the first switching module or the gold pin jumper button or the first control chip; The input end of the brightness control submodule is connected to the control end of the first switching module or the gold pin jump cap button or the first control chip, and the output end of the brightness control submodule is connected to the EDP interface; The first switching module or the gold pin jumper button or the first control chip is further used to generate a first backlight control signal and a second backlight control signal according to the received selection instruction, and send the first backlight control signal to the control end of the buck-boost submodule, and send the second backlight control signal to the input end of the brightness control submodule; The buck-boost submodule is used to receive the power supply energy provided by the power supply socket through the voltage input terminal, and perform buck-boost processing on the power supply energy according to the first backlight control signal received by the control terminal to obtain output power, and transmit the output power to the EDP interface through the voltage output terminal; The brightness control submodule is used to perform backlight control on a display device connected to the EDP interface according to the received second backlight control signal.

8. A PC module, characterized in that: It includes a controller, a second switching module and a second pin interface; The static end and the control end of the second switching module are both connected to the second pin interface, and at least two first signal output ports of the controller are respectively connected to a dynamic end of the second switching module; The control terminal and the second signal output port of the controller are both connected to the second pin interface; The second pin interface is used to connect to the interface conversion device according to any one of claims 1 to 7, so as to transmit the first control signal received from the interface conversion device to the control end of the controller and the control end of the second switching module, and to send the first signal data received from the static end of the second switching module and the second signal data received from the second signal output port of the controller to the interface conversion device; The controller is used to send the generated first signal data to the active end of the second switching module through the corresponding first signal output port according to the first control signal received by the control end thereof, and send the generated second signal data to the second pin interface through the second signal output port according to the first control signal; The second switching module is used for switching the target moving end to which its static end is connected according to the control end thereof receiving the first control signal.

9. The PC module according to claim 8, characterized in that: The second switching module includes a second switching switch and a second control chip; The static end of the second switch is connected to the second pin interface, the control end of the second switch is connected to the first control output end of the second control chip, and the at least two first signal output ports of the controller are respectively connected to a dynamic end of the second switch; The second control output terminal of the second control chip is connected to the control terminal of the controller; The control input terminal of the second control chip is connected to the second pin interface; The second pin interface is used to transmit the first control signal received from the interface conversion device to the control input end of the second control chip, and send the first signal data received from the static end of the second switch and the second signal data received from the second signal output port of the controller to the interface conversion device; The second control chip is used to transmit the first control signal received at its control input terminal to the control terminal of the second switch through its first control output terminal, and to transmit the first control signal to the control terminal of the controller through its second control output terminal; The controller is used to send the generated first signal data to the active end of the second switch through the corresponding first signal output port according to the first control signal received by the control end thereof, and send the generated second signal data to the second pin interface through the second signal output port according to the first control signal; The second switching module is used for switching the target moving end to which its static end is connected according to the first control signal of its control end.

10. An interactive tablet, characterized in that: It comprises the interface conversion device described in any one of claims 1 to 7, and the PC module described in claim 8 or 9.

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