Patent ID: 8463961

Claim:
A video signal switching apparatus for supplying video signals from a one of a plurality of video sources of a plurality of computers to a display device, the apparatus including: a digital video signal switching circuit including a plurality of source digital video interfaces each configured to be connected to a one of the plurality of video sources, wherein each respective video source of the plurality of video sources is associated with a different respective individual computer of the plurality of computers, a monitor digital video interface configured to be connected to the display and a digital video data switch selectively providing a video signal path for a digital video signal between the monitor digital video interface and a one of the source interfaces; an analogue video switching circuit separate to the digital video signal switching circuit and including a plurality of source analogue video interfaces each configured to be connected to a one of the plurality of video sources, a monitor analogue video interface configured to be connected to the display and an analogue video data switch selectively providing a video signal path for an analogue video signal between the monitor analogue video interface and a one of the source analogue video interfaces; and control circuitry which provides a selection signal causing the analogue and digital video switching circuit to switch in synchrony to provide a video signal path for a digital video signal between the monitor digital video interface and a one of the source digital video interfaces, and to provide a video signal path for an analogue video signal between the monitor analogue video interface and a one of the source analogue video interfaces to select one of the respective video sources for display on the display device; wherein the digital video signal switching circuit, the analogue video switching circuit, and the control circuitry reside in a common switching unit.