Digital display circuit in double-machine KVM (keyboard, video and mouse) sharing device

Abstract

The invention relates to a digital display circuit in a double-machine KVM (keyboard, video and mouse) sharing device, and belongs to the field of display and self-adaptive control circuits of KVM sharing devices in civil aviation air transportation control systems. The system comprises a processor MCU (microprocessor control unit), a first multiplexer, a second multiplexer, a monitor and a main machine graphics card, wherein the main machine graphics card is connected with the second multiplexer, the first multiplexer, the second multiplexer, the monitor and the main machine graphics card are respectively connected with an output interface of the processor MCU, the first multiplexer is connected with the second multiplexer, and the monitor is connected with the first multiplexer and the second multiplexer. The digital display circuit has the advantages that the self-adaptive output of display resolution is realized when the double-machine KVM sharing device is in a hidden opening condition, the compatible displaying of various DVI interface monitors is realized, the requirement of civil aviation air traffic control on the KVM display and self-adaptive process is met, and the problem of the prior art that the different types of monitors cannot be compatible in the KVM sharing device is solved.

Description

technical field [0001] The invention relates to the field of KVM sharer display and self-adaptive control circuit applied in the traffic management system of civil aviation, in particular to a digital DVI "squeeze open" display circuit in a dual-machine KVM sharer. Background technique [0002] KVM is an acronym for the words Keyboard (keyboard), Mouse (mouse), and Video (video). A KVM sharer is a computer peripheral device that enables multiple computer hosts to share a set of keyboards, mice, and monitors. It switches between each computer host by pressing a hot key on the keyboard. Because there are many interfaces for computer keyboards, mice, and monitors, there are various forms of KVM sharers. The common keyboard and mouse interfaces are: PS / 2 interface and USB interface; the display interface is also divided into analog and digital. Common Common analog signal display interfaces include VGA interface and 5BNC interface. Common digital signal display interfaces inclu...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem in the prior art that KVM sharers cannot be compatible with different types of displays, the present invention provides a digital DVI "open" display circuit in a dual-machine KVM sharer, which can realize compatibility in a dual-machine KVM sharer Different types of monitors and DVI shared display circuits that support "open" mode

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