CN220730771U - Signal synchronous switching device of keyboard display - Google Patents

Abstract

The utility model provides a signal synchronous switching device for a keyboard display, including a display and a keyboard, wherein the display is provided with a controller, a first Bluetooth and a button, wherein the controller is connected to the first interface and the second interface of the display, and the input signal of the first interface or the second interface is selected by pressing the button, wherein the controller is connected to the second Bluetooth of the keyboard through the first Bluetooth, and data communication is performed with the keyboard through the Bluetooth, wherein the control panel of the keyboard is connected to the first host through the second Bluetooth, and is simultaneously connected to the first Bluetooth, and is connected to the second host through a 2.4g wireless WiFi module. According to the selection of the button, the keyboard and the display are synchronously switched to the corresponding host for connection, so that the keyboard and the display are "bound", and there is no need to switch the keyboard/display again after the signal of the display/keyboard is switched, thereby reducing the operation of erroneous input and facilitating the utilization efficiency of different hosts by users.

Description

A signal synchronous switching device for keyboard display

Technical Field

The utility model relates to a computer device, in particular to a signal synchronous switching device for a keyboard and a display.

Background technique

In current offices, one person usually occupies one workstation. When working, as the sources of information are different, such as personal affairs and company affairs, it will become messy if they are all processed on the same computer host. However, if two computers are used for such a situation, two different computers will be needed. If they are both laptops, they can be placed on the workstation, but sometimes there are two desktops, which requires two sets of computers. Each set of computers has a computer host, monitor, keyboard and mouse. Now the mouse and keyboard can use wireless devices, reducing the use of wires, but the monitor and host are still indispensable.

Existing monitors usually have two different input ports, such as VGA, HDMI and DVI, as well as DP. Monitors now also have the function of controlling and switching different interfaces. By pressing the buttons on the monitor, you can select the corresponding connection port and then input the signal of the port. In this way, two monitors can use the same monitor. For the mouse, a wireless mouse can reduce the space occupied, but a keyboard cannot do so. Therefore, how to use the same keyboard and the same monitor to switch signals synchronously is a problem that needs to be considered.

For the above problems, the most typical application of the current multi-video source switching device is the multi-computer switch (Keyboard Video Mouse, KVM), which can access and control the computer by directly connecting the keyboard video and mouse ports. It can select one signal from multiple signals and send it out, and use a set of keyboard and mouse to control the selected signal, that is, one display and a set of mouse and keyboard can control multiple computers in time-sharing.

For example, patent number 202010234738.X provides a control switching system for multiple hosts and displays, and patent number 202220568098.0 provides a desktop control device for switching multiple video sources. However, the current KVM mainly switches signals by controlling the buttons on the KVM, and the existing KVM has a complex internal structure, occupies space, and is not suitable for using wireless devices. It is not suitable to use KVM on personal desks.

Currently, there are keyboards that support 2-3 hosts, such as the Logitech K580 keyboard and the K380 keyboard. When in use, if the keyboard operation is successful, if two or three hosts use the same monitor, it will be necessary to operate the monitor again, which will cause inconvenience in use, especially when only switching the signal on the screen and using the mouse of the host where the corresponding signal is located, but forgetting to switch the keyboard, the input from the keyboard is actually for another host, causing misoperation. Therefore, a device for synchronous switching of the keyboard and monitor is needed.

Utility Model Content

The utility model provides a keyboard-display signal synchronization switching device, which solves the problem that when switching signals on the keyboard side, the display also needs to switch signals, so that the keyboard and the display cannot correspond to the same host. The technical solution is as follows:

A signal synchronization switching device for a keyboard display comprises a display and a keyboard, wherein the display is provided with a controller, a first Bluetooth and a key, wherein the controller is connected with a first interface and a second interface of the display, and an input signal of the first interface or the second interface is selected by pressing the key, wherein the controller is connected with a second Bluetooth of the keyboard via the first Bluetooth, and performs data communication with the keyboard via Bluetooth, wherein a control panel of the keyboard is connected with a first host via the second Bluetooth, and is simultaneously connected with the first Bluetooth, and is connected with a second host via a 2.4G wireless WiFi module.

There are two buttons, the first button selects the input signal of the first interface and connects to the first host; the second button selects the input signal of the second interface and connects to the second host.

The first interface and the second interface adopt two of VGA, DP, HDMI and DVI.

The controller is also connected to a first indicator light and a second indicator light, both of which use dual-color display lights to display the signal input status of the first interface and the second interface respectively. When blue, it means that the corresponding interface is in use, red, it means that the corresponding interface is waiting, and when it is off, it means that there is no signal input to the corresponding interface.

The controller is ARM, and the model used is STM32.

The controller, the first Bluetooth and the button can be integrated in the display, the controller and the display chip share the same chip, and the button uses the function button of the display.

The control panel switches the second Bluetooth and 2.4g wireless WiFi modules through the keys on the keyboard, and the switching signal is sent to the first Bluetooth connected to the controller through the second Bluetooth.

The keys of the keyboard are equipped with indicator lights, which use dual-color display lights to display the signal input status of the first host and the second host respectively. When blue is used, it means that the corresponding interface is in use, and when red is used, it means that the corresponding interface is waiting. If it is not lit, it means that there is no signal input to the corresponding interface.

The signal synchronization switching device for the keyboard and display, according to the selection of the key, the keyboard and the display are synchronously switched to the corresponding host for connection, so that the keyboard and the display are "bound", and there is no need to switch the keyboard/display again after the signal of the display/keyboard is switched, which reduces the operation of erroneous input and facilitates the user's efficiency in utilizing different hosts.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of an application scenario of the signal synchronization switching device for a keyboard display;

FIG. 2 is a circuit diagram of the signal synchronization switching device of the keyboard display.

Detailed ways

As shown in Figure 1, the signal synchronization switching device of the keyboard and display is mainly used in the case where two hosts use the same display, and the keyboard and mouse are also wireless. In this embodiment, a display 1, a first host 2 and a second host 3 are provided. The display 1 is provided with at least two groups of different interfaces, such as VGA, DP, HDMI and DVI. The display outputs of the first host 2 and the second host 3 are both connected to the display 1 and connected to different interfaces.

The input of the first host 2 and the second host 3 both use a wireless keyboard 6, and the wireless keyboard 6 includes two wireless connection modes: Bluetooth and 2.4g wireless wifi module, wherein Bluetooth is set to be connected to the first host 2, and the 2.4g wireless wifi module is set to be connected to the second host 3. Furthermore, the first host 2 is also connected to a first mouse 4, and the second host 3 is also connected to a second mouse 5, and the first mouse 4 and the second mouse 5 are wireless or wired.

As shown in Figure 2, the signal synchronization switching device of the keyboard display includes a controller 15, a first Bluetooth 16 and a button 17. The controller 15 is connected to the first interface 11 and the second interface 12 of the display. The input signal of the first interface 11 or the second interface 12 is selected through the button 17. The controller 15 is connected to the second Bluetooth 8 of the keyboard through the first Bluetooth 16 and communicates data with the keyboard through Bluetooth.

The buttons 17 are provided with two, the first button selects the input signal of the first interface 11, sets the first interface 11 to adopt the VGA interface, and connects to the first host, then the display displays the data of the first host; the second button selects the input signal of the second interface 12, sets the second interface 12 to adopt the HDMI interface, and connects to the second host, then the display displays the data of the second host.

The controller 15 is also connected to the display chip 10 of the display. When there is no signal input to the first interface 11 and/or the second interface 12, the controller 15 obtains the signal input information of the first interface 11 and the second interface 12 through the display chip 10. The controller 15 is also connected to the first indicator light 13 and the second indicator light 14. The first indicator light 13 and the second indicator light 14 are both dual-color display lights, which are used to display the signal input status of the first interface 11 and the second interface 12 respectively. When blue is used, it means that the corresponding interface is in use, and when red is used, it means that the corresponding interface is waiting. If it is not lit, it means that there is no signal input to the corresponding interface.

The controller 15 is ARM, and the model used is STM32. The STM32 series is based on the ARM Cortex-M3 core designed specifically for embedded applications that require high performance, low cost, and low power consumption. It is divided into two different series according to performance: the STM32F103 "enhanced" series and the STM32F101 "basic" series. The enhanced series has a clock frequency of 72MHz, which is the highest performance product among similar products; the basic series has a clock frequency of 36MHz, and the performance is greatly improved compared to 16-bit products at the price of 16-bit products, which is the best choice for 16-bit product users. Both series have built-in 32K to 128K flash memory, and the difference is the maximum capacity of SRAM and the combination of peripheral interfaces. When the clock frequency is 72MHz, the code is executed from the flash memory, and the STM32 power consumption is 36mA, which is the lowest power consumption product on the 32-bit market, equivalent to 0.5mA/MHz. The advantage of Cortex should be the combination of low power consumption, low cost, and high performance (or two).

Furthermore, the controller 15, the first Bluetooth 16 and the button 17 can be integrated into the display, the controller 15 can share the same chip as the display chip, and the button 17 can be a function button of the display.

The control panel 7 of the keyboard is connected to the first host through the second Bluetooth 8, and is also connected to the first Bluetooth 16, and is connected to the second host through the 2.4g wireless WiFi module 9. The control panel 7 can also switch the second Bluetooth 8 and the 2.4g wireless WiFi module 9 through the keys of the keyboard, and the switching signal is sent to the controller 15 through Bluetooth to select the corresponding interface. Furthermore, the keys of the keyboard are provided with indicator lights to indicate the current signal selection. The indicator lights also use a two-color display light, which is used to display the signal input status of the first host and the second host respectively. When blue is used, it means that the corresponding interface is in use, and when red is used, it means that the corresponding interface is waiting. If it is not lit, it means that there is no signal input to the corresponding interface.

When in use, if both the first host and the second host are in the power-on state, the keys of the keyboard or the keys 17 connected to the controller 15 can play the role of switching the display input interface. The switching signal is sent to the display or keyboard where no key is pressed via Bluetooth to select the corresponding host, so that the keyboard input and display signal output of the same host are consistent, and the keyboard and display are switched synchronously.

If the first host is in sleep mode or shut down, the key 17 connected to the controller 15 is pressed, or the key of the first host is selected by the keyboard, and the controller 15 obtains information from the display chip 10 that there is no input signal from the first host, and then continues to display the input signal of the second host. At this time, the first indicator light 13 is off, which can also give instructions to the user. The operation of the second host in sleep mode or shut down is similar.

If there is no input signal from the two hosts, the display shows a black screen. When any key is pressed, the display shows that there is no signal input. At this time, the first indicator light 13 and the first indicator light 14 are also off, which can also give instructions to the user.

Therefore, users can determine the status of the host by observing the indicator light, and then operate the host or the mouse to achieve a better user experience.

The signal synchronization switching device for the keyboard and display, according to the selection of the key, the keyboard and the display are synchronously switched to the corresponding host for connection, so that the keyboard and the display are "bound", and there is no need to switch the keyboard/display again after the signal of the display/keyboard is switched, which reduces the operation of erroneous input and facilitates the user's efficiency in utilizing different hosts.

Claims (8)

1. A signal synchronization switching device for a keyboard display, characterized in that it includes a display and a keyboard, the display is provided with a controller, a first Bluetooth and a button, the controller is connected to the first interface and the second interface of the display, the input signal of the first interface or the second interface is selected by the button, the controller is connected to the second Bluetooth of the keyboard through the first Bluetooth, and data is communicated with the keyboard through Bluetooth, the control panel of the keyboard is connected to the first host through the second Bluetooth, and is connected to the first Bluetooth at the same time, and is connected to the second host through a 2.4g wireless WiFi module. 2. The signal synchronization switching device of the keyboard display according to claim 1 is characterized in that: there are two buttons, the first button selects the input signal of the first interface and connects to the first host; the second button selects the input signal of the second interface and connects to the second host. 3. The signal synchronization switching device of a keyboard display according to claim 1, wherein the first interface and the second interface adopt two of VGA, DP, HDMI and DVI. 4. The signal synchronization switching device of the keyboard display according to claim 1 is characterized in that: the controller is also connected to a first indicator light and a second indicator light, both of which use two-color display lights, which are respectively used to display the signal input status of the first interface and the second interface. When it is blue, it means that the corresponding interface is in use, and when it is red, it means that the corresponding interface is waiting, and when it is not lit, it means that there is no signal input to the corresponding interface. 5. The signal synchronous switching device of the keyboard display according to claim 1 is characterized in that: the controller is ARM, and the model used is STM32. 6. The signal synchronization switching device of the keyboard display according to claim 1 is characterized in that: the controller, the first Bluetooth and the button can be integrated in the display, the controller and the display chip share the same chip, and the button adopts the function button of the display. 7. The signal synchronization switching device of the keyboard display according to claim 1 is characterized in that: the control panel switches the second Bluetooth and 2.4g wireless WiFi modules through the keys of the keyboard, and the switching signal is sent to the first Bluetooth connected to the controller through the second Bluetooth. 8. The signal synchronization switching device of the keyboard display according to claim 1 is characterized in that: the keys of the keyboard are provided with indicator lights, which use two-color display lights to respectively display the signal input status of the first host and the second host. When blue is used, it means that the corresponding interface is in use, and when red is used, it means that the corresponding interface is waiting, and when it is not lit, it means that there is no signal input to the corresponding interface.