Patent ID: 8711157

Claim:
A switching device, comprising: a plurality of first interfaces respectively coupled directly to a plurality of computers; a third interface directly coupled to a display module; and a switching unit directly coupled to the first interfaces and the third interface; wherein the switching unit is used for selecting one of the first interfaces to be coupled to the third interface in response to a command, the switching unit comprises a processing unit for receiving the command, a plurality of first switches corresponding to the first interfaces, and a plurality of second switches corresponding to the first interfaces, a control terminal of each first switches is coupled to the processing unit, the first switches are respectively coupled between a control terminal of the second switches and a power source for controlling the corresponding second switch; the second switches are respectively coupled between the first interfaces and the third interface for connecting the corresponding first interface and the third interface when being turned on; when received the command, the processor unit controls one of the first switches corresponding to the received command to turn on, the corresponding second switch turns on for connecting the corresponding first interface with the third interface in response to the turned on first switch, the rest of the first interfaces disconnect with the third interface, thereby the display module receives and displays the video signal from the computer coupled with the first interface connected with the third interface.