Patent ID: 8325223

Claim:
A system for providing respective video signals to at least two viewers, the system comprising: a control unit; and a display connected to said control unit; wherein the control unit is operable to control the display to alternately display an image from a first video signal and an image from a second video signal, to synchronize a first shuttered filter to the display such that the first filter is shuttered when the second video signal image is displayed, and to synchronize a second shuttered filter to the display such that the second filter is shuttered when the first video signal image is displayed, wherein the first and second video signals correspond to left and right perspectives of a three-dimensional scene viewed by a first viewer, wherein the control unit is further operable to time multiplex display of the first and second video signal images on the display with display of images from a third video signal and to synchronize the display of the images from the third video signal with operation of a third shuttered filter such that the third shuttered filter is shuttered when the first or second video image is displayed and the first and second shuttered filters are shuttered when the third video signal image is displayed thereby providing only the first and second video signal images to a first viewer using said first and second shuttered filters and providing only the third video signal image to a third viewer using said third shuttered filter.