Special KVM switch

[jddow]

I need a KVM switch which hides the fact that the monitor has been switched to another computer. Is there such a thing?

 

[Alabalcho]

Most old-school KVM switches (PS2 with VGA) do that.
What interfaces do you need?

 

[jddow]

Most old-school KVM switches (PS2 with VGA) do that.
What interfaces do you need?

I'll be more specific here. This is a Windows configuration. I am writing an application that involves 7 monitors. 6 of them are reserved for specific display elements that are placed on specific locations in the configured virtual screen layout. The 7th is a local control and monitoring function as well as the normal desktop display. I want something so that people using this configuration can use a KVM on that 7th display element without disarranging all the rest of the windows.

Usually it will be running with only the 6 monitors connected. I do not want the main desktop display to appear on that monitor. It would distract from the presentations and would lead to the monitors configuring themselves into some other display layout than when all 7 are present. Sometimes it will be started with the KVM switched to the computer for monitoring, configuring, and testing the presentation under manual control. Usually control will take place via a network connection from other programs which usually will live on other machines.

The really old switches are a problem because they use physical switches. Physical switch contacts corrode. And switch performance is more than slightly erratic as a result. And with modern components it seems that pulling the physical monitor connection and attaching it to a different machine results in the same lost monitor behavior. So it seems either EDID is being polled rather regularly or there is a specific pin or combination of pins that must be held at specific levels. If it's that latter option and somebody could point me to that information I can hack up connector adapters as needed. At the moment I am working with VGA displays through adapters as needed for the display adapters. That may make it easier, at least temporary. I fear handling this with HDMI or display port may be a royal pain in the fundament.

Thanks for your time.

{^_^}