CN114268618A - KVM switch remote control system and method - Google Patents
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Abstract
The invention discloses a remote control method and a system for a KVM switch, wherein the method comprises the following steps: the KVM switch collects image data output by each electronic terminal connected to the KVM switch and sends the image data to the main control terminal by a controlled terminal which is in communication connection with a remote main control terminal through the Internet; the KVM switch simulates a USB input device to process a keyboard or mouse input signal generated by the main control end through the controlled end and outputs the keyboard or mouse input signal to the corresponding controlled electronic terminal; the KVM switch emulates USB input equipment to form storage equipment and displays the storage equipment in the controlled electronic terminal. By the invention, as long as the network connected with the KVM switch can surf the Internet, the main control end can be connected with the KVM switch at any position of the Internet and control any PC or server host connected with the KVM switch, so that the remote access to the KVM is more convenient.
Description
Technical Field
The invention relates to the technical field of remote control, in particular to a KVM switch remote control system and method.
Background
KVM is an abbreviation for Keyboard Video Mouse. The KVM switch allows you to access and control the computer by directly connecting to the keyboard, video and mouse (KVM) ports. KVM technology has evolved from the first basic SOHO office type to enterprise IT infrastructure management systems. Servers and devices located in multiple remote locations can be easily accessed directly from the kvm client management software. The KVM over IP solution has a sophisticated multi-site failover functionality, a direct interface that conforms to the new server management standard (IPMI), and a function to map local storage media to a remote location. KVM products have been upgraded and developed for two generations from emergence to advancement:
1. analog KVM technique
The analog KVM switch system directly connects the keyboard, video, and mouse on any computer. It provides a simple plug and play installation system that is completely independent of software and network operating systems and enables users to access multiple computers in real time. Analog KVM is best suited for environments where the user and system are co-located, and is an ideal technique for accessing centralized multi-PC and multi-chassis environments.
2. IP-Based KVM switcher solution
IP-Based KVM switches represent a new generation of KVM switch technology. Different from the traditional method for using the KVM switch in the past, the IP-Based KVM switch is a digital device, and is connected with the remote over-IP of the KVM switch through the existing network, so that a plurality of computers connected to the KVM device can be remotely controlled. In contrast to analog KVM switches, digital KVM switches capture and convert keyboard, display, and mouse analog signals to digital signals. These digital signals are then encrypted, compressed and can be securely transmitted in a TCP/IP network. The greatest advantage of the IP-based KVM switch is flexibility. The user does not have to connect the KVM switch directly with a cable or remotely with an extender, connect the network port of the IP-Based KVM switch to the existing backbone network, and access and control all computers connected to the KVM device "anytime and anywhere" through WAN, LAN, Internet or intranet.
However, when using the IP-Based KVM switch, the remote operator needs to know the network address of the KVM, and it is difficult to remotely access the KVM if the IP is insufficient or the KVM is located in the intranet.
Disclosure of Invention
The present invention provides a remote control system and method for a KVM switch, so as to solve the problem of the prior art that remote access to KVM is cumbersome and inconvenient.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a KVM switch remote control system, which comprises a main control end and a KVM switch, wherein the KVM switch comprises:
the controlled end is in communication connection with a remote main control end through the Internet and is remotely controlled by the main control end; the controlled end is displayed in a webpage of a network browser running at the main control end in real time; the master control terminal interacts with the controlled terminal through a webpage and displays the controlled terminal successfully establishing connection in a list form; the master control end manages the service, the process, the user and the file of the remote controlled end through the browser;
the image processing module is used for acquiring image data output by each electronic terminal connected to the KVM switch through HDMI and sending the image data to the main control terminal through the controlled terminal;
and the USB analog processing module is used for simulating USB input equipment to process a keyboard or mouse input signal which is received by the controlled terminal and generated by the main control terminal, outputting the keyboard or mouse input signal to the corresponding controlled electronic terminal, simulating the USB input equipment to form storage equipment, and displaying the storage equipment in the controlled electronic terminal.
Preferably, the KVM switch simulates itself a keyboard/mouse input device through a dedicated chip, and injects the keyboard input or mouse input generated by the remote host into the finally controlled computer through the dedicated chip.
Preferably, the KVM switch uses a dedicated chip to collect image data from VGA or HDMI, and uses another dedicated chip to compress the data into standard streaming media image data, and meanwhile, the code rate can be dynamically adjusted according to the bandwidth conditions of both sides to provide higher image fluency.
Preferably, the image processing module compresses and processes image data output by each electronic terminal into standard streaming media digital image data, and the controlled terminal sends the standard streaming media digital image data to the main control terminal.
Preferably, the KVM switch is provided with an image input interface for connecting an image output end of each electronic terminal, an image output interface for externally connecting a display, a USB input interface for allowing USB equipment to simulate and connect a USB output interface of each electronic equipment, an RJ45 interface for network connection, and a power input interface for inputting a direct-current power supply.
Preferably, the KVM switch further comprises a network transformer for signal level coupling and signal filtering.
The invention also provides a KVM switch remote control method, which comprises the following steps:
s101, the KVM switch collects image data output by each electronic terminal connected to the KVM switch and sends the image data to a main control end by a controlled end which is in communication connection with a remote main control end through the Internet;
s102, simulating a USB input device by the KVM switch to process a keyboard or mouse input signal generated by the main control end through the controlled end and outputting the keyboard or mouse input signal to the corresponding controlled electronic terminal;
s103, the KVM switch simulates the USB input device to form a storage device and displays the storage device in the controlled electronic terminal.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the present invention provides a remote control system and method for KVM switch, as long as the network connected with the KVM switch can be accessed, the main control end can be connected with the KVM switch at any position of the Internet and control any PC or server host connected with the KVM switch, so the present invention does not need to know the network address of the KVM switch, and the remote access to the KVM is more convenient.
2. The remote control system and method for the KVM switch are simple to operate, effectively improve user experience, and are high in practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart of a KVM switch remote control method according to the present invention;
FIG. 2 is a functional block diagram of a KVM switch remote control system provided in the present invention;
FIG. 3 is a schematic diagram of a KVM switch provided in the present invention;
in the figure:
100: a KVM switch remote control system;
110: a KVM switch;
111: a USB analog processing module;
112: an image processing module;
113: a controlled end;
114: an image input interface;
115: an image output interface;
116: an RJ45 interface;
117: a USB input interface;
118: a power input interface;
120: a main control end;
s101 to S103.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a remote control system and a remote control method for a KVM switch, which are used for solving the problem that remote access to KVM is complicated and inconvenient in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1:
in the embodiment of the present invention, a main control end and a controlled end connected to the main control end via a network are provided, where the main control end is, for example, a PC or a mobile terminal (a mobile phone or a tablet computer), and the main control end has a display function, so that the main control end can realize subsequent control of the controlled end, and the controlled end can be displayed in a web page of a web browser running on the main control end in real time. The remote control of the main control end can realize intranet penetration in various complex network environments, and services, processes, users, files and the like of the remote controlled end can be managed through a browser.
Specifically, as shown in fig. 1, the present embodiment provides a remote control method for a KVM switch, including the following steps:
step S101, the KVM switch collects image data output by each electronic terminal connected to the KVM switch and a controlled terminal in communication connection with a remote main control terminal through the Internet sends the image data to the main control terminal. In this embodiment, a controlled terminal is pre-installed in the KVM switch, and the controlled terminal is in communication connection with the remote host through the internet and is remotely controlled by the remote host. In this embodiment, the master control end interacts with the controlled end through a web page and displays the controlled end successfully establishing connection in a list form.
As long as the network connected with the KVM switch can be accessed to the Internet, the main control end can be connected with the KVM switch at any position of the Internet and control any PC or server host connected to the KVM switch, so the invention does not need to know the network address of the position of the KVM and ensures that the KVM is accessed remotely more conveniently.
Specifically, in this embodiment, the KVM switch collects image data output by each electronic terminal connected to the KVM switch and sends the image data to a master by a controlled end in communication connection with a remote master through the internet: the KVM switch compresses the image data output by each electronic terminal into standard streaming media digital image data, and the controlled terminal sends the standard streaming media digital image data to the main control terminal.
Specifically, the KVM switch uses a dedicated chip to collect image data output from, for example, a PC terminal from a VGA or an HDMI, and uses another dedicated chip to compress the data into standard streaming media image data (H264), and simultaneously, the code rate can be dynamically adjusted according to the bandwidth conditions of both sides to provide higher image fluency.
Step S102, the KVM switch simulates a USB input device to process a keyboard or mouse input signal received from the master control terminal through the controlled terminal and outputs the keyboard or mouse input signal to the corresponding controlled electronic terminal.
Specifically, in this embodiment, the KVM switch simulates a keyboard/mouse input device itself through a dedicated chip, and injects the keyboard input or the mouse input generated by the remote host into the finally controlled computer through the dedicated chip.
In step S103, the KVM switch simulates USB input devices to form a storage device and displays the storage device in the controlled electronic terminal.
Specifically, in this embodiment, the KVM switch emulates a USB slave storage device (USB disk), so that the finally controlled computer can see one USB disk, thereby implementing operations such as installing a system remotely or exchanging files with the finally operating system. The data in the simulated USB flash disk is real to the computer and the content can be remotely added, modified and deleted.
In this embodiment, the KVM switch includes an image input interface for connecting an image output terminal of each of the electronic terminals, an image output interface for connecting an external display, a USB input interface for connecting a USB device to a USB output interface of each of the electronic devices, an RJ45 interface for network connection, and a power input interface for inputting a dc power.
In one embodiment, the KVM switch further comprises a network transformer for signal level coupling and signal filtering.
As shown in fig. 2, the present embodiment provides a KVM switch remote control system 100 corresponding to the above method embodiment, where the KVM switch remote control system 100 includes a host 120 and a KVM switch 110 equipped with a controlled end 113.
As shown in fig. 2 and 3, in the present embodiment, the KVM switch 110 includes: a USB analog processing module 111, an image processing module 112 and a controlled terminal 113.
Specifically, in this embodiment, the controlled end 113 is in communication connection with a remote host 120 through the internet and is remotely controlled by the host 120. As shown in FIG. 3, the controlled end 113 is stored in the memory of the KVM switch 110 and runs through the CPU/RAM/ROM support. In the embodiment, the controlled end 113 is pre-installed in the KVM switch 110, and the controlled end 113 is communicatively connected to the remote host 120 through the internet and is remotely controlled by the remote host 120. In this embodiment, the main control terminal 120 interacts with the controlled terminal 113 through a web page and displays the controlled terminal 113 that successfully establishes a connection in a list form.
As long as the network connected to the KVM switch 110 can be connected to the Internet, the host 120 can connect to the KVM switch 110 at any location on the Internet and control any PC or server connected to the KVM switch 110, so the present invention does not need to know the network address of the KVM, and thus it is more convenient to access the KVM remotely.
Specifically, in this embodiment, the image processing module 112 is configured to collect image data output by each electronic terminal connected to the KVM switch 110 and send the image data to the host 120 through the controlled terminal 113.
Specifically, in this embodiment, the image processing module 112 (i.e., the image process shown in fig. 3) compresses and processes the image data output by each electronic terminal into standard streaming digital image data, and the controlled terminal 113 sends the standard streaming digital image data to the master terminal 120.
As shown in fig. 3, specifically, the KVM switch 110 uses a dedicated chip to collect image data output from a VGA or HDMI, for example, the image data is a/D converted, a VNC (virtual network controller) is used to process the image, and another dedicated chip is used to compress the data into standard streaming media image data (H264), and simultaneously, the code rate can be dynamically adjusted according to the bandwidth conditions of the two parties to provide higher image fluency.
Specifically, in this embodiment, the USB analog processing module 111 (i.e., the USB process shown in fig. 3) is configured to simulate a USB input device (USBSoC) to process a keyboard (keyboard) or Mouse (Mouse) input signal generated by the host 120 and output the keyboard or Mouse input signal to the corresponding controlled electronic terminal through the controlled terminal 113, and simulate the USB input device to form a storage device and display the storage device in the controlled electronic terminal.
Specifically, in the present embodiment, the KVM switch 110 simulates a keyboard/mouse input device itself through a dedicated chip, and injects the keyboard input or the mouse input generated by the remote host 120 into the finally controlled computer through the dedicated chip.
Specifically, in this embodiment, the KVM switch 110 simulates USB slave storage devices (USB disks) so that the finally controlled computer can see one USB disk, thereby implementing operations such as installing a system remotely or exchanging files with the finally operating system. The data in the simulated USB flash disk is real to the computer and the content can be remotely added, modified and deleted.
In the present embodiment, as shown in fig. 2 and fig. 3, the KVM switch 110 is provided with an image input interface 114 (VGAIN shown in fig. 3) for connecting an image output end of each electronic terminal, an image output interface 115 (VGAOUT shown in fig. 3) for externally connecting a display, a USB input interface 117 (USB shown in fig. 3) for USB device analog connection to the USB output interface of each electronic device, an RJ45 interface 116 (RJ 45 shown in fig. 3) for network connection, and a power input interface 118 (powerrin shown in fig. 3) for inputting a dc power.
In one embodiment of the present invention, the KVM switch 110 further comprises a network transformer (PHY shown in FIG. 3) for signal level coupling and signal filtering.
In summary, according to the present invention, as long as the network connected to the KVM switch can be accessed to the Internet, the main control terminal can connect to the KVM switch at any position on the Internet and control any PC or server connected to the KVM switch, so that the present invention does not need to specifically know the network address of the KVM, which makes it more convenient to remotely access the KVM; the method is simple to operate, effectively improves user experience, and is high in practicability. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (7)
1. A KVM switch remote control system, comprising: including master control end and KVM switch, wherein, the KVM switch includes:
the controlled end is in communication connection with a remote main control end through the Internet and is remotely controlled by the main control end; the controlled end is displayed in a webpage of a network browser running at the main control end in real time; the master control terminal interacts with the controlled terminal through a webpage and displays the controlled terminal successfully establishing connection in a list form; the master control end manages the service, the process, the user and the file of the remote controlled end through the browser;
the image processing module is used for acquiring image data output by each electronic terminal connected to the KVM switch through HDMI and sending the image data to the main control terminal through the controlled terminal;
and the USB analog processing module is used for simulating USB input equipment to process a keyboard or mouse input signal which is received by the controlled terminal and generated by the main control terminal, outputting the keyboard or mouse input signal to the corresponding controlled electronic terminal, simulating the USB input equipment to form storage equipment, and displaying the storage equipment in the controlled electronic terminal.
2. The KVM switch remote control system of claim 1, wherein: the KVM switch simulates a keyboard/mouse input device per se through a special chip, and the keyboard input or the mouse input generated by the remote main control end is injected into a finally controlled computer through the special chip.
3. The KVM switch remote control system of claim 1, wherein: the KVM switch uses a special chip to collect image data from VGA or HDMI, and uses another special chip to compress the data into standard streaming media image data, and simultaneously, the code rate can be dynamically adjusted according to the bandwidth conditions of the two sides to provide higher image fluency.
4. The KVM switch remote control system of claim 1, wherein: the image processing module compresses and processes image data output by each electronic terminal into standard streaming media digital image data, and the controlled terminal sends the standard streaming media digital image data to the main control terminal.
5. The KVM switch remote control system of claim 1, wherein: the KVM switch is provided with an image input interface for connecting the image output end of each electronic terminal, an image output interface for externally connecting a display, a USB input interface for the USB equipment to be in analog connection with the USB output interface of each electronic equipment, an RJ45 interface for network connection and a power supply input interface for inputting a direct current power supply.
6. The KVM switch remote control system of claim 1, wherein: the KVM switch further comprises a network transformer for signal level coupling and signal filtering.
7. A KVM switch remote control method is characterized in that: the method comprises the following steps:
s101, the KVM switch collects image data output by each electronic terminal connected to the KVM switch and sends the image data to a main control end by a controlled end which is in communication connection with a remote main control end through the Internet;
s102, simulating a USB input device by the KVM switch to process a keyboard or mouse input signal generated by the main control end through the controlled end and outputting the keyboard or mouse input signal to the corresponding controlled electronic terminal;
s103, the KVM switch simulates the USB input device to form a storage device and displays the storage device in the controlled electronic terminal.
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| CN202111537484.XA CN114268618A (en) | 2016-11-10 | 2016-11-10 | KVM switch remote control system and method |
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| CN202111537484.XA CN114268618A (en) | 2016-11-10 | 2016-11-10 | KVM switch remote control system and method |
| CN201610989865.4A CN108076083A (en) | 2016-11-10 | 2016-11-10 | A kind of KVM switch long-range control method and system |
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| CN110071827B (en) * | 2019-04-09 | 2021-12-10 | 山东超越数控电子股份有限公司 | Terminal and system for realizing networked KVM |
| CN110109623B (en) * | 2019-04-30 | 2022-08-16 | 广州长图量传电子科技有限公司 | Method for realizing remote operation of USB flash disk of KVM system |
| CN112437112A (en) * | 2020-10-14 | 2021-03-02 | 中国气象局气象探测中心 | Wireless KVM control system |
| CN113835534A (en) * | 2021-08-16 | 2021-12-24 | 中国地质大学（武汉） | KVM system with virtual USB flash disk function |
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