Switchable wired keyboard and system thereof

Abstract

The invention discloses a switchable wired keyboard and a system thereof, and relates to the technical field of keyboard control. The switchable wired keyboard comprises a keyboard body, a main control module, a switching module and a plurality of expansion interfaces, the switching module is arranged in the keyboard body and electrically connected with the main control module and the expansion interfaces, and the switching module is used for switching off the connection of the first terminal and switching on the connection of the second terminal according to a switching signal output by the main control module; the plurality of expansion interfaces are arranged on one side of the width direction of the keyboard body and are used for establishing communication connection with connecting equipment and supplying power to the connecting equipment; wherein the plurality of expansion interfaces comprise a plurality of input interfaces which are used for receiving output signals of the terminal; and the plurality of output interfaces are used for outputting the output signals acquired by the input interfaces to input equipment. The invention aims to improve the comprehensive performance of the keyboard.

Description

Technical Field

[0001] The invention relates to the technical field of keyboard control, and in particular to a switchable wired keyboard and a system thereof. Background Art

[0002] With the development of the times, the amount of information processed in work, life, and games is increasing. The number of computers, tablets, and mobile phones owned by individuals or families is increasing, and the functions are becoming more and more diverse. The functions of some tablets and mobile phones can replace computers to a certain extent. However, in actual use, there is often only one monitor, a set of headphones or speakers, and a set of keyboards, mice, or touchpads. And how to conveniently share this set of peripherals has become increasingly important. Otherwise, it is necessary to assign a set of input and display devices to each PC host, each tablet and mobile phone. For this reason, KVM switches, docking stations, hubs and other devices have become key devices for switching and connecting multiple devices. However, placing KVM switches, docking stations, hubs and other devices in a limited space will take up a large space, and KVM switches, docking stations, hubs and other devices have certain similarities in functions, which also leads to the problem of overlapping functions. Summary of the invention

[0003] The main purpose of the present invention is to provide a switchable wired keyboard, aiming to improve the comprehensive performance of the keyboard.

[0004] To achieve the above-mentioned purpose, the present invention proposes a switchable wired keyboard, which includes a keyboard body, a main control module, a switch module, and a plurality of expansion interfaces;

[0005] The switching module is disposed in the keyboard body and is electrically connected to the main control module and the plurality of expansion interfaces respectively. The switching module is used to disconnect the connection of the first terminal and connect the connection of the second terminal according to the switching signal output by the main control module;

[0006] The plurality of expansion interfaces are arranged on one side of the keyboard body in the width direction and are used to establish a communication connection with a connection device and to supply power to the connection device;

[0007] The plurality of expansion interfaces include:

[0008] A plurality of input interfaces, wherein the plurality of input interfaces are electrically connected to an output end of the terminal and are used to receive an output signal of the terminal;

[0009] Multiple output interfaces, the multiple output interfaces are electrically connected to the input end of the signal input device, and the multiple output interfaces are used to output the output signals obtained by the input interface to the signal input device.

[0010] In one embodiment, the switching module includes a plurality of switch circuits, and the plurality of switch circuits are used to switch on or off the path between the input interface and the terminal according to the switch signal output by the main control module;

[0011] When any of the switch circuits is in the on state, the other switch circuits will be turned off.

[0012] In one embodiment, the switching module also includes a signal enhancement circuit, the input end of the signal enhancement circuit is electrically connected to the multiple input interfaces, the output end of the signal enhancement circuit is electrically connected to the multiple output interfaces, and the signal enhancement circuit is used to enhance the output signal and output it to the multiple output interfaces.

[0013] In one embodiment, the plurality of expansion interfaces include at least one of Type-C, USB, HDMI, VGA, and DP interfaces.

[0014] In one embodiment, the switchable wired keyboard also includes a permission determination module, which is used to output a determination signal to the main control module according to an input permission signal, so that the main control module outputs a switch signal to turn on or off the path between the input interface corresponding to the determination signal and the terminal.

[0015] In one embodiment, the switchable wired keyboard further includes a voice module, which is disposed on a side of the keyboard body facing away from the plurality of expansion interfaces, and is used to receive voice signals and output them to the main control module;

[0016] The main control module is used to output a corresponding switching signal to the switching module according to the voice signal, so that the switching module performs a corresponding action.

[0017] In one embodiment, the switchable wired keyboard further includes a power module, the input end of the power module is electrically connected to the power access end, and the power module is used to convert the input voltage into a plurality of different voltage values ​​and output them;

[0018] Among them, a plurality of different voltage values ​​are the power supply voltages of each module in the switchable wired keyboard.

[0019] In one embodiment, the switchable wired keyboard further includes a prompt circuit, the input end of the prompt circuit is electrically connected to the main control module, and the prompt circuit is used to output a prompt signal according to the prompt control signal output by the main control circuit;

[0020] Wherein, the prompt signal is set corresponding to the terminal.

[0021] In one embodiment, the switchable wired keyboard includes a heat dissipation component, an input end of the heat dissipation component is electrically connected to the main control module, and the heat dissipation component is used to reduce the temperature of the keyboard body according to a heat dissipation control signal output by the main control circuit.

[0022] The present invention further provides a switchable wired keyboard system, which includes the switchable wired keyboard and a connecting device as described in any one of the above.

[0023] The technical solution of the present invention adopts a switchable wired keyboard. The switchable keyboard includes a keyboard body, a main control module, a switching module, and multiple expansion interfaces. The output signal of the terminal is received through the input interface in the expansion interface, and the connection of the first terminal is turned off and the connection of the second terminal is turned on through the switching module, so that the switching of signal inputs of different terminals is realized. The switching module outputs the switching input signal to the input device through the output interface. In addition, multiple expansion interfaces can also power the connected devices while establishing a communication connection with the connected devices. By integrating the functions of devices such as KVM switches, docking stations and hubs into the keyboard, the comprehensive performance of the keyboard is effectively improved, and the problem of area occupation due to repeated functions is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of a switchable wired keyboard of the present invention;

[0026] Figure 2 It is a structural schematic diagram of another embodiment of the switchable wired keyboard of the present invention;

[0027] Figure 3 FIG. 4 is a schematic diagram of a module of another embodiment of the switchable wired keyboard of the present invention.

[0028] Description of Figure Numbers:

[0029] 10. Main control module; 20. Switching module; 21. Switching circuit; 22. Signal enhancement circuit; 30. Extension interface; 31. Input interface; 32. Output interface; 40. Authority determination module; 50. Voice module; 60. Power module; 70. Prompt circuit; 80. Heat dissipation component.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their 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 at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] With the development of the times, the amount of information processed in work, life, and games is increasing. The number of computers, tablets, and mobile phones owned by individuals or families is increasing, and the functions are becoming more and more diverse. The functions of some tablets and mobile phones can replace computers to a certain extent. However, in actual use, there is often only one monitor, a set of headphones or speakers, and a set of keyboards, mice, or touchpads. And how to conveniently share this set of peripherals has become increasingly important. Otherwise, it is necessary to assign a set of input and display devices to each PC host, each tablet and mobile phone. For this reason, KVM switches, docking stations, hubs and other devices have become key devices for switching and connecting multiple devices. However, placing KVM switches, docking stations, hubs and other devices in a limited space will take up a large space, and KVM switches, docking stations, hubs and other devices have certain similarities in functions, which also leads to the problem of overlapping functions.

[0035] Therefore, the present invention proposes a switchable wired keyboard, which includes a keyboard body, a main control module 10, a switch module 20, and a plurality of expansion interfaces 30;

[0036] The switching module 20 is disposed in the keyboard body and is electrically connected to the main control module 10 and the plurality of expansion interfaces 30 respectively. The switching module 20 is used to disconnect the connection of the first terminal and connect the connection of the second terminal according to the switching signal output by the main control module 10;

[0037] The plurality of expansion interfaces 30 are arranged on one side of the keyboard body in the width direction, and are used to establish a communication connection with a connection device and to supply power to the connection device;

[0038] The plurality of expansion interfaces 30 include:

[0039] A plurality of input interfaces 31, wherein the plurality of input interfaces 31 are electrically connected to an output end of the terminal and are used to receive an output signal of the terminal;

[0040] Multiple output interfaces 32, the multiple output interfaces 32 are electrically connected to the input end of the signal input device, and the multiple output interfaces 32 are used to output the output signal obtained by the input interface 31 to the signal input device.

[0041] In this embodiment, the main control module 10 can be implemented by a main controller, such as DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), MCU (Microcontroller Unit), SOC (System On Chip), etc. The main control circuit is mainly responsible for coordinating and controlling the data acquisition, processing, decision-making and response of the actuator of each circuit and module in the switchable wired keyboard. The use of different main controllers will directly affect the performance, cost, power consumption and development flexibility of the system. In actual applications, it can be determined according to the needs of specific application scenarios, such as processing speed, power consumption limit, cost budget, development cycle and system scalability. In actual projects, multiple types of processors may be used in combination to achieve optimal system performance and efficiency.

[0042] In this embodiment, the switching module 20 includes a plurality of switch circuits 21, and the plurality of switch circuits 21 are used to turn on or off the path between the input interface 31 and the terminal according to the switch signal output by the main control module 10; wherein, when any of the switch circuits 21 is in the on state, the remaining switch circuits 21 will be turned off. It can be understood that the plurality of switch circuits 21 can be implemented by a multiplexing circuit. Multiplexing dynamically selects one or more of the plurality of input signals through one or a group of control signals and transmits them to a common output channel, thereby realizing the selective conduction of the output of the terminal. Taking the analog multiplexing circuit as an example, it is usually composed of a series of CMOS tube switches, which are controlled by the switch signal output by the main control module 10, and determine which terminal's output signal is connected and turned on according to the switch signal output by the main control module 10. Each switch can be regarded as a basic switch circuit 21, and the multiplexer is the result of these switch circuits 21 being arranged and controlled according to a specific logic to realize the free selection of input signals. For example, when the switchable wired keyboard is connected with terminal A, terminal B, and terminal C. At this time, the work is performed by terminal A, and terminal A obtains and outputs signals through the switchable wired keyboard. The switchable wired keyboard outputs the video signal output by terminal A to the display screen, and inputs the signals output by the keyboard body and the mouse into terminal A, which are processed by terminal A and displayed on the display screen. The user selects the terminal to be switched through a single key or a combination of keys in the keyboard body, or a fixed key. For example, if the user needs to switch terminal B, the pre-set combination of keys can be triggered so that the main control module 10 in the switchable wired keyboard obtains the signal, and outputs the switching signal to the switching module 20, so that the switching module 20 turns off the communication connection of terminal A and turns on the communication connection of terminal B. Users can quickly switch between different terminals through the keys on the keyboard body, which saves desktop space and improves switching efficiency.

[0043] Furthermore, the switching module 20 also includes a signal enhancement circuit 22, the input end of the signal enhancement circuit 22 is electrically connected to the multiple input interfaces 31, and the output end of the signal enhancement circuit 22 is electrically connected to the multiple output interfaces 32. The signal enhancement circuit 22 is used to enhance the output signal and output it to the multiple output interfaces 32.

[0044] In this embodiment, since the signal may be attenuated after long-distance transmission or multiple switching. The signal enhancement circuit 22 includes an amplifier circuit, especially for video signals, the amplifier circuit can increase the signal strength to ensure that the video signal is still complete and correct when it reaches the signal receiving device. Among them, the selection and design of the amplifier circuit need to consider the bandwidth and distortion of the signal to avoid introducing noise or reducing the image quality. In addition, the signal enhancement circuit 22 also includes a signal equalization circuit for compensating for the phase distortion and amplitude attenuation generated by the signal during transmission. Especially for high-speed digital signals, equalization technology is essential for maintaining signal integrity. The equalization circuit can be passive (such as an RC network) or active (integrated circuit). The active equalization circuit can adjust the signal characteristics more accurately and is suitable for more complex application environments. In order to reduce the impact of electromagnetic interference and other external factors on the signal, the signal enhancement circuit 22 will integrate a filter to filter out unwanted noise and maintain the purity of the signal. Further, the signal enhancement circuit 22 also includes measures such as photoelectric isolation and voltage / current limiting to prevent instantaneous high voltage or electrostatic discharge from damaging the circuit, while also enhancing the stability of the system.

[0045] In this embodiment, the plurality of expansion interfaces 30 include at least one of Type-C, USB, HDMI, VGA, and DP interfaces. Specifically, the plurality of expansion interfaces 30 cover standards widely used in the technical field to adapt to the connection requirements of different devices, thereby greatly improving the versatility and flexibility of the device. Among them, the Type-C interface, as a new generation of universal interface standards, supports high-speed data transmission, power transmission, and video signal output, realizes a convenient design that can be plugged in both directions, and is suitable for the latest notebook computers, smart phones, tablets and other devices, providing users with a minimalist and efficient connection experience. Considering its universality and compatibility, the USB interface included in the expansion interface 30 supports a wide range of peripheral connections, such as a mouse, a U disk, a hard disk, etc., ensuring good compatibility with traditional and modern devices, and meeting the diverse needs of users' daily office and entertainment. In order to directly support high-definition video output, the HDMI interface configured on the keyboard can seamlessly connect to display devices such as televisions and monitors, which is convenient for users to display multimedia or enjoy high-definition film and television content without the need for additional adapters, simplifying the operation process. Although VGA is an older video interface standard, it is still widely used in certain specific environments or old display devices. Therefore, the inclusion of a VGA interface ensures the applicability of the keyboard in various places. In response to high-end display requirements, the DP interface provides higher bandwidth and better digital video signal transmission capabilities, and is particularly suitable for connecting high-resolution displays or multi-screen settings, meeting application scenarios such as professional graphic design, games, or audio and video editing that have strict requirements on image quality. Through the integration of the above-mentioned multiple interfaces, users can easily manage terminal switching, realize data exchange between devices, video signal transmission, and power supply, which greatly improves work efficiency and ease of use, and meets the needs of users for diversified and efficient connections. It should be understood that there are partially overlapping interfaces between multiple input interfaces 31 and multiple output interfaces 32, and this type of interface belongs to a data interaction interface, which has both signal input and signal output. For example, data storage devices such as USB flash drives have both signal input and signal output.

[0046] The technical solution of the present invention adopts a switchable wired keyboard. The switchable keyboard includes a keyboard body, a main control module 10, a switching module 20, and multiple expansion interfaces 30. The output signal of the terminal is received through the input interface 31 in the expansion interface 30, and the connection of the first terminal is turned off and the connection of the second terminal is turned on through the switching module 20, so that the switching of signal inputs of different terminals is realized. The switching module 20 outputs the switching input signal to the input device through the output interface 32. In addition, the multiple expansion interfaces 30 can also provide power to the connected devices while establishing a communication connection with the connected devices. By integrating the functions of devices such as KVM switches, docking stations and hubs into the keyboard, the comprehensive performance of the keyboard is effectively improved, which not only improves the cleanliness of the desktop environment, but also greatly enhances the convenience and work efficiency of users operating between multiple devices.

[0047] In one embodiment of the present invention, the switchable wired keyboard also includes an authority determination module 40, which is used to output a determination signal to the main control module 10 according to the input authority signal, so that the main control module 10 outputs a switch signal to turn on or off the path between the input interface 31 corresponding to the determination signal and the terminal.

[0048] In this embodiment, the authority determination module 40 can be implemented in an embedded system, such as a single-chip microcomputer or other microcontroller. In the factory initialization setting of the switchable wired keyboard, the manufacturer can set the authority corresponding to each input interface 31 in the authority determination module 40 to different initialization authority passwords. The user can change the authority corresponding to each input interface 31 to a personal password according to the initialization authority password, and the previous personal password must be entered in the subsequent password change process to improve the security of multi-terminal use. In order to further achieve the matching of the input interface 31 and the terminal, when the switchable wired keyboard establishes a communication connection with the terminal, the switchable wired keyboard will obtain the device information of the terminal, and when the user sets a personal password for a certain input interface 31 and the terminal, the personal password will be automatically bound to the device information of the terminal to avoid manually switching the connection between the terminal and the input interface 31 of the switchable wired keyboard, thereby circumventing the problem of authority determination and further improving the security of terminal use. For example, the user is a financial futures practitioner. In order to timely understand the market conditions, economic information and local financial system information of different futures markets, multiple terminals and multiple displays are usually set up, and some of this type of information may be important personal information. Therefore, the user can set a personal password corresponding to part of the input interface 31 and the terminal through the authority determination module 40 in the switchable wired keyboard. Specifically, when the switchable wired keyboard is connected to three terminals, terminal A, terminal B, and terminal C. The user stores important personal information in terminal C. When the user switches from terminal A or terminal B to terminal C, the display will display that a personal password needs to be entered to confirm whether the user has the switching authority. When the user enters the personal password, the password will be input into the authority determination module 40 in the switchable wired keyboard in the form of an authority signal, and the authority determination module 40 will match the input authority signal with the preset authority signal stored in the memory. When the input authority signal matches the preset authority signal stored in the memory, the authority determination module 40 will output a correctly matched determination signal to the main control module 10, so that the main control module 10 outputs a switch signal to conduct the path between the input interface 31 and terminal C, and shuts off the path between the input interface 31 and terminal A or terminal B. When the input permission signal does not match the preset permission signal stored in the memory, the permission determination module 40 will output a match error determination signal to the main control module 10, so that the main control module 10 maintains the existing terminal conduction state. It should be understood that the permission determination module 40 is integrated in the switchable wired keyboard and does not rely on cloud data, so it can work without a network.

[0049] In one embodiment of the present invention, the switchable wired keyboard further includes a voice module 50, which is disposed on the side of the keyboard body facing away from the plurality of expansion interfaces 30, and is used to receive voice signals and output them to the main control module 10;

[0050] The main control module 10 is used to output a corresponding switching signal to the switching module 20 according to the voice signal, so that the switching module 20 performs a corresponding action.

[0051] Furthermore, the voice module 50 includes a voice input unit and a voice recognition unit;

[0052] Wherein, the output end of the voice input unit is electrically connected to the input end of the voice recognition unit, and the voice input unit is used to obtain and output a voice signal;

[0053] The output end of the voice recognition unit is electrically connected to the input end of the main control module 10 , and the voice recognition unit is used to recognize an input voice signal and output a voice recognition signal to the main control module 10 .

[0054] In this embodiment, since the quality of the voice received by the voice module 50 will change due to its distance and direction from the sound source, the voice module 50 is arranged on the side of the keyboard body facing away from the multiple expansion interfaces 30, that is, the side facing the user. The voice input unit can be implemented by a microphone, etc. Among them, different degrees of influence will be presented for different voice input units. For directional microphones, the sensitivity of sounds coming from different directions is different. For example, a cardioid-pointing microphone mainly picks up sounds from the front, while the sounds from the sides and back will be weakened; an eight-shaped (or bi-directional) microphone is sensitive to sounds from the front and back, while the sounds from the sides are attenuated. Therefore, the orientation of the sound source relative to the microphone will directly affect the voice quality. Although the omnidirectional microphone receives sounds from all directions more evenly, in some cases, such as when the surrounding environment is noisy, the sound source in a specific direction will still be more prominent than other directions. In addition, as the distance from the sound source increases, the sound energy will decay according to the inverse square law of the distance, resulting in a decrease in voice quality. A farther sound source may also be more susceptible to environmental reflections and echoes, affecting the clarity and stereoscopic sense of the voice. Therefore, the voice input unit is arranged on the side facing the user, so as to better obtain the voice signal. The voice input unit converts the acquired voice signal into an electrical signal and outputs it to the voice recognition unit. Among them, the voice recognition unit includes a voice signal processing chip, a controller, a memory, etc. The electrical signal output by the voice input unit is amplified, filtered, analog-to-digital converted, etc. by the voice signal processing chip for further digital processing and analysis. The operation process of the entire module is controlled by a controller, such as a microcontroller (MCU) or a digital signal processor (DSP), including instruction parsing, function control, communication with other system components, etc. The memory stores voice data, algorithm models and program codes, such as Flash memory for storing firmware, and RAM for temporary data processing. Specifically, when the voice module 50 receives "switch to the second interface", the voice module 50 will obtain the voice information and match it with the voice information stored in the memory, thereby outputting a switching signal to the switching module 20, so that the switching module 20 switches to the terminal corresponding to the second interface. Through the voice module 50, the user can quickly switch the terminal by voice control without having to switch the terminal manually.

[0055] In one embodiment of the present invention, the switchable wired keyboard further includes a power module 60, the input end of the power module 60 is electrically connected to the power access end, and the power module 60 is used to convert the input voltage into a plurality of different voltage values ​​and output them;

[0056] Among them, a plurality of different voltage values ​​are the power supply voltages of each module in the switchable wired keyboard.

[0057] In this embodiment, the power module 60 can be composed of a voltage conversion circuit, an auxiliary circuit, a power control circuit, etc. Among them, the voltage conversion circuit can be composed of an AC / DC voltage conversion circuit and a DC / DC voltage conversion circuit; the auxiliary circuit can include a filter circuit, a protection circuit, a voltage stabilization circuit, a detection circuit, etc.; the power control circuit can be implemented by, for example, PLC (Programmable Logic Controller), MCU (Microcontroller Unit), DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), SOC (System On Chip), etc. The input voltage is converted into the voltage actually required by the load through the voltage conversion circuit, and the output voltage is detected by the detection circuit, thereby outputting a voltage detection signal to the power control circuit, so that the power control circuit controls the voltage conversion circuit. Among them, the power control circuit adjusts the on and off time (pulse width modulation, PWM) of the switch element in the voltage conversion circuit through the obtained voltage detection signal to maintain the stability of the output voltage or current, so as to ensure that it can efficiently and stably convert the input power into the required output power.

[0058] In one embodiment of the present invention, the switchable wired keyboard further includes a prompt circuit 70, the input end of the prompt circuit 70 is electrically connected to the main control circuit, and the prompt circuit 70 is used to output a prompt signal according to the prompt control signal output by the main control circuit;

[0059] Wherein, the prompt signal is set corresponding to the terminal.

[0060] In this embodiment, the prompt circuit 70 can be implemented by an LED prompt circuit 70, a digital display circuit, etc. Among them, the main control module 10 establishes handshake communication with multiple expansion interfaces 30. When the expansion interface 30 is connected to a device, the main control module 10 will obtain the request signal input by the access device, and output a prompt control signal to the prompt circuit 70 according to the request signal. Take the prompt circuit 70 as an LED prompt circuit as an example, and the LED prompt circuit is provided with multiple groups. Further, the multiple groups of LED prompt circuits 70 are provided with diodes that display different colors when the circuit is turned on, and different colors are used to represent different connection states and switching states. In practical applications, the switchable wired keyboard is connected to multiple different terminals. Among them, the interface connected to the terminal in the switchable wired keyboard is marked, and a digital marking method can be used, such as interface 1, interface 2, etc. When interface 1 is connected to the first terminal and interface 2 is connected to the second terminal, the main control module 10 will obtain the request signals input by the first terminal and the second terminal. At this time, the main control module 10 will output a prompt control signal to the prompt circuit 70, so that the LED prompt circuits corresponding to interface 1 and interface 2 in the prompt circuit 70 are green and red respectively. Among them, green indicates that the current switchable wired keyboard selects the first terminal. The user can switch the switchable wired keyboard to select the second terminal output by himself. At this time, the LED prompt circuits 70 corresponding to interface 1 and interface 2 in the prompt circuit 70 are red and green respectively. The user can intuitively understand the currently selected terminal through the prompt signal output by the prompt circuit 70, so as to switch to the terminal actually needed.

[0061] It is important to understand that the switchable wired keyboard is compatible with the functions of the KVM switch and the type-c expansion dock. Therefore, it has a high degree of integration. Integrated devices may generate heat due to high-density integration, so it is necessary to consider the heat dissipation of the device to ensure the stability and reliability of the device under long-term use.

[0062] In one embodiment of the present invention, the switchable wired keyboard includes a heat dissipation component 80, the input end of the heat dissipation component 80 is electrically connected to the main control module 10, and the heat dissipation component 80 is used to reduce the temperature of the keyboard body according to the heat dissipation control signal output by the main control circuit.

[0063] In this embodiment, the heat dissipation component 80 can be implemented by two methods, namely, passive heat dissipation and active heat dissipation. Among them, the passive heat dissipation method can specifically adopt high thermal conductivity materials, such as aluminum alloy bottom shell, which can naturally conduct internal heat to the outside, and promote air circulation by increasing the surface area and optimizing the shell structure to achieve passive heat dissipation. It can be understood that when using the passive heat dissipation method, there is no need to establish an electrical connection with the main control module 10. Further, heat pipe technology or high-performance heat dissipation pads can be used internally to transfer heat more effectively from the heat source to the shell or heat sink. The active heat dissipation method can use an integrated small fan or a heat sink with a heat dissipation fan, actively exhaust or blow air, and help the heat to dissipate quickly. The internal temperature of the switchable wired keyboard when working is detected by setting a temperature detection device, and the temperature detection signal is input to the main control module 10. Among them, the temperature detection device can be multiple. The main control module 10 outputs a heat dissipation control signal to the heat dissipation component 80 according to the temperature detection signal to control the operation of the heat dissipation component 80, thereby reducing the working temperature of the keyboard itself. In addition, the temperature detection module will continuously obtain the temperature detection signal input by the temperature detection device, and the main control module 10 will continuously adjust the working state of the heat dissipation component 80 according to the temperature detection signal to automatically adjust the fan speed or adjust the working mode, balance performance and heat dissipation requirements, and avoid energy waste caused by excessive heat dissipation.

[0064] The present invention also proposes a switchable wired keyboard system, which includes the switchable wired keyboard and the connection device as described above. It is worth noting that since the switchable wired keyboard system of the present invention is based on the above-mentioned switchable wired keyboard, the embodiments of the switchable wired keyboard of the present invention include all technical solutions of all embodiments of the above-mentioned switchable wired keyboard, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0065] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A switchable wired keyboard, characterized in that: The switchable wired keyboard includes a keyboard body, a main control module, a switch module, and multiple expansion interfaces; The switching module is disposed in the keyboard body and is electrically connected to the main control module and the plurality of expansion interfaces respectively. The switching module is used to disconnect the connection of the first terminal and connect the connection of the second terminal according to the switching signal output by the main control module; The plurality of expansion interfaces are arranged on one side of the keyboard body in the width direction and are used to establish a communication connection with a connection device and to supply power to the connection device; The plurality of expansion interfaces include: A plurality of input interfaces, wherein the plurality of input interfaces are electrically connected to an output end of a terminal and are used to receive output signals of the terminal; Multiple output interfaces, the multiple output interfaces are electrically connected to the input end of the signal input device, and the multiple output interfaces are used to output the output signals obtained by the input interface to the signal input device.

2. The switchable wired keyboard according to claim 1, characterized in that: The switching module includes a plurality of switch circuits, and the plurality of switch circuits are used to switch on or off the path between the input interface and the terminal according to the switch signal output by the main control module; When any of the switch circuits is in the on state, the other switch circuits will be turned off.

3. The switchable wired keyboard according to claim 1, characterized in that: The switching module also includes a signal enhancement circuit, the input end of the signal enhancement circuit is electrically connected to the multiple input interfaces, the output end of the signal enhancement circuit is electrically connected to the multiple output interfaces, and the signal enhancement circuit is used to enhance the output signal and output it to the multiple output interfaces.

4. The switchable wired keyboard according to claim 1, characterized in that: The multiple expansion interfaces include at least one of Type-C, USB, HDMI, VGA, and DP interfaces.

5. The switchable wired keyboard according to claim 1, characterized in that: The switchable wired keyboard also includes an authority determination module, which is used to output a determination signal to the main control module according to the input authority signal, so that the main control module outputs a switch signal to turn on or off the path between the input interface corresponding to the determination signal and the terminal.

6. The switchable wired keyboard as claimed in claim 1, characterized in that: The switchable wired keyboard further includes a voice module, which is arranged on the side of the keyboard body facing away from the plurality of expansion interfaces, and is used to receive voice signals and output them to the main control module; The main control module is used to output a corresponding switching signal to the switching module according to the voice signal, so that the switching module performs a corresponding action.

7. The switchable wired keyboard according to claim 1, characterized in that: The switchable wired keyboard further includes a power module, the input end of the power module is electrically connected to the power access end, and the power module is used to convert the input voltage into a plurality of different voltage values ​​and output them; Among them, a plurality of different voltage values ​​are the power supply voltages of each module in the switchable wired keyboard.

8. The switchable wired keyboard according to claim 1, characterized in that: The switchable wired keyboard further includes a prompt circuit, the input end of the prompt circuit is electrically connected to the main control module, and the prompt circuit is used to output a prompt signal according to the prompt control signal output by the main control circuit; Wherein, the prompt signal is set corresponding to the terminal.

9. The switchable wired keyboard as claimed in claim 1, characterized in that: The switchable wired keyboard includes a heat dissipation component, an input end of the heat dissipation component is electrically connected to the main control module, and the heat dissipation component is used to reduce the temperature of the keyboard body according to a heat dissipation control signal output by the main control circuit.

10. A switchable wired keyboard system, characterized in that: The switchable wired keyboard system comprises the switchable wired keyboard and a connecting device as described in any one of claims 1 to 9.

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