KVM (Keyboard Video Mouse) switching device with double-user-side interaction

Abstract

The utility model discloses a KVM (Keyboard Video Mouse) switching device for dual-user-side interaction, which comprises a USB (Universal Serial Bus) switching module connected with a plurality of USB uplink ports and connected to a USB hub, and each USB uplink port can be respectively used for being connected with a computer; the USB concentrator is connected to a plurality of USB downlink ports, and any one of the USB downlink ports is used for accessing external equipment; the HDMI switching module is connected to a plurality of HDMI input ports and is connected to the HDMI distributor, and each HDMI input port can be respectively used for being connected to a computer; the HDMI distributor is connected to a plurality of HDMI output ports, and any HDMI output port is used for being connected with display output; and the management control module is connected with the HDMI switching module and the USB switching module to output a control signal so as to control the switching of the user terminal. The problem that the user management efficiency is affected due to the fact that an existing single-user KVM switching device is not flexible enough to use is solved.

Description

Technical Field

[0001] The present application relates to the field of computer hardware, and in particular to a dual-user-end interactive KVM switching device. Background Art

[0002] KVM switching devices have the advantages of convenient unified monitoring and management, low cost, and high resource utilization. They are widely used in industrial monitoring, IT corporate offices, financial securities, college education and other fields, and can enable a single user to switch and control multiple computers. As the application scenarios of KVM switching devices gradually diversify, users often need to view a variety of scheduling information during video monitoring. KVM switching devices operated by a single user are not flexible enough to use, which affects user management efficiency. Summary of the invention

[0003] The embodiment of the present application provides a dual-user-end interactive KVM switching device, which supports dual-user-end display and operation and has better usability, thereby solving the problem that the existing single-user KVM switching device is not flexible enough to use and affects user management efficiency.

[0004] The embodiment of the present application provides a dual-client interactive KVM switching device, comprising:

[0005] The USB switch module is connected to multiple USB upstream ports and connected to a USB hub. Each USB upstream port can be used to connect to a computer;

[0006] A USB hub connected to a plurality of USB downstream ports, any of which is used to access an external device;

[0007] HDMI switch module, connected to multiple HDMI input ports, and connected to HDMI distributor, each HDMI input port can be used to connect to a computer;

[0008] An HDMI distributor connected to a plurality of HDMI output ports, any of which is used to connect to a display output;

[0009] The management control module is connected to the HDMI switching module and the USB switching module to output a control signal to control the switching of the user terminal.

[0010] Optionally, the USB hub is connected to four USB downstream ports in total, wherein two USB downstream ports form a group, and are respectively used to connect to mice and keyboards of two groups of users.

[0011] Optionally, the HDMI distributor is connected to two HDMI output ports so as to access two displays through the two HDMI output ports to display information for two groups of users respectively.

[0012] Optionally, the HDMI distributor is implemented based on the MS9332 chip.

[0013] Optionally, the number of USB upstream ports connected to the USB switching module and the number of HDMI input ports connected to the HDMI switching module correspond to the number of computers.

[0014] Optionally, a switch button is also included, which is connected to the management control module to provide a physical button to send the control signal.

[0015] Optionally, the USB switching module is an analog switch chip, which is implemented using a CH444P chip.

[0016] The KVM switching device of the embodiment of the present application supports dual-user terminal display and operation and has better usability, thereby solving the problem that the existing single-user KVM switching device is not flexible enough to use and affects the user management efficiency.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 This is an example of the architecture of the KVM switch device according to an embodiment of the present application;

[0020] Figure 2 The schematic diagram is a schematic diagram of the principle of the HDMI distributor of the KVM switching device according to the embodiment of the present application. DETAILED DESCRIPTION

[0021] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0022] The embodiment of the present application provides a dual-client interactive KVM switching device, comprising:

[0023] The USB switch module is connected to multiple USB upstream ports and connected to a USB hub. Each USB upstream port can be used to connect to a computer.

[0024] The USB hub is connected to a plurality of USB downstream ports, and any of the USB downstream ports is used to access an external device.

[0025] The HDMI switching module is connected to multiple HDMI input ports and connected to the HDMI distributor. Each HDMI input port can be used to connect to a computer.

[0026] An HDMI distributor is connected to a plurality of HDMI output ports, and any of the HDMI output ports is used to connect to a display output.

[0027] The management control module is connected to the HDMI switching module and the USB switching module to output a control signal to control the switching of the user terminal.

[0028] In some embodiments, a switch button is also included, which is connected to the management control module to provide a physical button to issue the control signal.

[0029] In some specific embodiments, the KVM switching device corresponding to dual-user interaction includes 3 USB upstream ports, a USB switching module, a USB hub, 4 USB downstream ports, a switching button, a management control module, 3 HDMI input ports, an HDMI switching module, an HDMI distributor, and 2 HDMI output ports.

[0030] Among them, Figure 1 As shown, the first USB upstream port and the first HDMI input port are connected to computer 1, the second USB upstream port and the second HDMI input port are connected to computer 2, and the third USB upstream port and the third HDMI input port are connected to computer 3. After the user presses the switch button, the management control module synchronously outputs an enable control signal to the USB switching module and the HDMI switching module according to the button signal, the USB switching module connects the first USB upstream port, the second USB upstream port, or the third USB upstream port to the USB hub, and the HDMI switching module outputs the video signal of the corresponding first HDMI input port, the second HDMI input port, or the third HDMI input port to the HDMI distributor.

[0031] In some embodiments, the USB hub is connected to four USB downstream ports in total, wherein two USB downstream ports form a group, and are used to connect to the mouse and keyboard of two groups of users respectively.

[0032] In some embodiments, the HDMI distributor is connected to two HDMI output ports so as to access two displays through the two HDMI output ports to display information for two groups of users respectively.

[0033] The USB hub is connected to 4 USB downstream ports in total. The first USB downstream port and the second USB downstream port are connected to the first user's mouse 1 and keyboard 1 respectively. The third USB downstream port and the fourth USB downstream port are connected to the second user's mouse 2 and keyboard 2 respectively. The HDMI distributor is connected to 2 HDMI output ports in total to output the computer video signal to two display screens at the same time. The first HDMI output port is connected to the first user's display screen 1, and the second HDMI output port is connected to the second user's display screen 2. The two users can view and operate the current computer through their respective keyboards, mice, and display screens.

[0034] The KVM switching device of the embodiment of the present application supports dual-user terminal display and operation and has better usability, thereby solving the problem that the existing single-user KVM switching device is not flexible enough to use and affects the user management efficiency.

[0035] In some embodiments, the HDMI distributor is implemented based on the MS9332 chip. Figure 2 As shown in the figure, the circuit is an HDMI distributor of a KVM switch device that supports dual-user end display and operation. U3 is an HDMI distributor chip that distributes the input video signal 1 to 2. The HDMIRXCP, HDMIRXCN, HDMIRX0P, HDMIRX0N, HDMIRX1P, HDMIRX1N, HDMIRX2P, HDMIRX2N, RXDDCSCL, RXDDCSDA, and HDMIRXHPD pins are connected to the video output signal of the HDMI switch module and serve as the video input port of U3. The HDMITX related pins serve as the video output signal port of U3. The HDMI distributor is a key component of this KVM switch device, which realizes the dual-screen display of a computer video signal.

[0036] In some embodiments, the number of USB upstream ports connected to the USB switch module and the number of HDMI input ports connected to the HDMI switch module correspond to the number of computers. In some embodiments, the USB switch module is an analog switch chip, which is implemented using a CH444P chip.

[0037] Specifically, the USB switching module in the embodiment of the present application is an analog switch chip, specifically a two-way four-choice low-resistance broadband bidirectional analog switch, which can realize multi-choice switching of up to 4 USB signals. In this embodiment, the three signal input channels of the chip are used to perform three-choice switching of USB signals. A chip of the CH444P model can be used. The chip realizes switching of three computers according to the enable control of the high and low level signals output by the management control module. The USB hub is a CH334F chip. The HDMI switching module is a three-input and one-output switch chip for HDMI signals, and the channel selection is controlled by the high and low level signals output by the management control module. The HDMI distributor is a chip of the MS9332 model.

[0038] To apply the switching device of the embodiment of the present application, first, connect the KVM switching device to three computers, keyboard, mouse, and display screen, turn on the power of the KVM switching device, and initialize each module. After the user presses the switch button, the management control module controls the USB switching module and the HDMI switching module according to the key signal of the switch button to switch the computer to be operated. Two sets of keyboards and mice are used with the same computer, and two display screens are used for two users to view the display content of the computer at the same time.

[0039] The KVM switching device of the present embodiment is controlled by buttons. The KVM switching device can connect two sets of keyboards, mice, and displays to a computer at the same time, allowing two users to cooperate in viewing and operating the same computer, thereby increasing the practicality of the KVM switching equipment and improving the management efficiency of the system.

[0040] It should be noted that in the embodiments of the present application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0041] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0042] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A dual-client interactive KVM switching device, characterized in that: include: The USB switch module is connected to multiple USB upstream ports and connected to a USB hub. Each USB upstream port can be used to connect to a computer; A USB hub connected to a plurality of USB downstream ports, any of which is used to access an external device; HDMI switch module, connected to multiple HDMI input ports, and connected to HDMI distributor, each HDMI input port can be used to connect to a computer; An HDMI distributor connected to a plurality of HDMI output ports, any of which is used to connect to a display output; The management control module is connected to the HDMI switching module and the USB switching module to output a control signal to control the switching of the user terminal.

2. The dual-client interactive KVM switching device according to claim 1, characterized in that: The USB hub is connected to four USB downstream ports in total, wherein two USB downstream ports form a group, and are respectively used to connect the mouse and keyboard of two groups of users.

3. The dual-client interactive KVM switching device according to claim 2, characterized in that: The HDMI distributor is connected to two HDMI output ports so as to access two displays through the two HDMI output ports and display information for two groups of users respectively.

4. The dual-client interactive KVM switching device according to claim 3, characterized in that: The HDMI distributor is implemented based on the MS9332 chip.

5. The dual-client interactive KVM switching device according to claim 1, characterized in that: The number of USB upstream ports connected to the USB switching module and the number of HDMI input ports connected to the HDMI switching module correspond to the number of computers.

6. The dual-client interactive KVM switching device according to claim 1, characterized in that: It also includes a switch button connected to the management control module to provide a physical button to send out the control signal.

7. The dual-client interactive KVM switching device according to claim 1, characterized in that: The USB switching module is an analog switch chip, which is implemented using a CH444P chip.

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