Patent ID: 7584306

Claim:
A KVM switch, for a set of user interface devices to share a plurality of computers, the KVM switch comprising: a switching device, arranged to route paths between the set of user interface devices and the computers, wherein the switching device has a remote processor; and at least one console module, electrically connected between the switching device and the set of user interface devices, the console module comprising: an input circuit, arranged to receive an input signal from the set of user interface devices, wherein the input signal represents information for controlling an On Screen Display (OSD); a console processor, arranged to convert the input signal received from the input circuit into an OSD information packet which represents information for controlling the OSD and transfer the OSD information packet to the remote processor, wherein the remote processor is arranged to control an OSD running status of the KVM switch and to generate an OSD update command according to the OSD running status and the OSD information packet which has been received from the console processor, the OSD update command being a command for updating the OSD; a display memory, arranged to store content for an OSD image, wherein the console processor is arranged to update the content according to the OSD update command received from the remote processor; an OSD generator, arranged to generate an On Screen Display (OSD) image based on the updated content provided from the display memory; and an overlap circuit, arranged to overlap the OSD image onto a video signal from the computers and output the overlapped video signal to the set of user interface devices.