Kvm system

A switching device and switching system technology, applied in the direction of equipment, cable transmission adaptation, electrical digital data processing, etc., can solve the poor performance of KVM switching devices, increase the reaction time of KVM switching devices to video signals, increase the cost of KVM switching devices and modules and other issues to achieve the effect of reducing production costs and simplifying the motherboard circuit

Inactive Publication Date: 2010-01-27
ATEN INT CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the KVM switching system of the fifth type belonging to the network cable, since the video signal is transmitted in the form of a differential signal, it is inevitable to use the video encoding circuit 171 and the video decoding circuit 172
However, the video decoding circuit will not only increase the cost of the KVM switch device and modules, but also increase the response time of the KVM switch device to video signals, resulting in poor performance of the KVM switch device

Method used

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Embodiment Construction

[0028] see Figure 2a . The keyboard-video-mouse (KVM) switching system of the present invention is used to transmit single-ended video signals. The KVM switching system includes a module 28 , a KVM switching device 29 and a signal transmission line 23 . The console 12 receives the video signal from the computer 11, and the video signal is directly transmitted through the signal line, which is a so-called single-ended video signal. Such as Figure 2a As shown, the single-ended video signal from the computer 11 is transmitted to the console 12 through the signal transmission line 23 through the module 28 and the KVM switching device 29. This single-ended video signal is not encoded or decoded, because the video signal transmitted from the computer to the console It is not converted into a differential signal, so no encoding or decoding is required.

[0029] Please also see Figure 2b and Figure 2c . These two figures show several signal lines of the signal transmission ...

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Abstract

A keyboard-video-mouse (KVM) system is disclosed. The KVM system comprises a module, a KVM switch and a signal cable. The module transmits a single-ended video signal from a computer, converts a universal asynchronous receiver / transmitter (UART) signal to an input / output (IO) signal, and transmits the IO signal to the computer. The KVM switch receives the single-ended video signal from the module and outputs the UART signal to the module. The signal cable transmits the single-ended video signal from the module to the KVM switch and transmits the UART signal from the KVM switch to the first module.

Description

technical field [0001] The present invention relates to a keyboard-video-mouse (keyboard-video-mouse, KVM for short) switching system, in particular to communication in the KVM switching system. Background technique [0002] Communication between KVM switching devices and modules is a very important part of designing a KVM switching system. For example, many factors such as signal transmission lines, connectors, signal converters, and transmission distances must be considered comprehensively. For a well-designed KVM switching system, video signal (video signal), keyboard signal (keyboard signal, referred to as KB signal), mouse signal (mouse signal, referred to as MS signal), etc. can be correctly transmitted in the switching system . [0003] There are two main types of communication technologies commonly used in KVM switching systems: the KVM communication method of the D-sub video terminal and the KVM communication method of the fifth category network cable (CAT 5 cable)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/023G06F3/14G06F3/038H04N7/10H04B3/40
CPCG09G2370/047G06F3/023G06F3/1423G06F3/038G06F3/14G09G2370/24
Inventor 刘一力
Owner ATEN INT CO
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