Keyboard-video-mouse switch and operating method thereof

摘要

A keyboard-video-mouse (KVM) switch and an operating method thereof are disclosed. The KVM switch is coupled between at least one peripheral device and controlled computers. The method includes steps of: determining whether the hot-key mode of KVM switch is started; if yes, when the KVM switch receives a first signal from a specific controlled computer of the controlled computers, directly passing the first signal to a corresponding specific peripheral device of the at least one peripheral device; when the KVM switch receives a second signal in response from the specific peripheral device within a predetermined period of time, determining whether the second signal includes a specific data; if yes, replacing the specific data in the second signal with an irrelevant data to form a third signal and transmitting the third signal to the specific controlled computer. The irrelevant data corresponds to the specific controlled computer and has no effect on the specific controlled computer.

主权项

1. A method for operating a keyboard-video-mouse (KVM) switch, the KVM switch being coupled between at least one peripheral device and a plurality of controlled computers, the method comprising:
(a) determining whether a hotkey mode of the KVM switch is initiated; (b) if the determination in step (a) is affirmative, when the KVM switch receives a first signal from a specific one of the controlled computers, directly forwarding the first signal to a corresponding specific one of the plurality of peripheral devices; (c) when, within a predetermined time interval after forwarding the first signal, the KVM switch receives from the specific peripheral device a second signal in response, determining whether the second signal contains a predetermined data; and (d) if the determination in step (c) is affirmative, replacing the predetermined data in the second signal with an irrelevant data to generate a third signal, and transmitting the third signal to the specific controlled computer, wherein the irrelevant data corresponds to the specific controlled computer and has no effect on the specific controlled computer.