Patent ID: 7752648

Claim:
An interactive method comprising: receiving, at a display device, background video comprising encoded video frames, at least one encoded video frame comprising a plurality of sub-pictures, each of the plurality of sub-pictures comprising a different alternative background representing a possible outcome of an interactive video application; decoding said at least one encoded video frame to produce a decoded video frame; upsampling a first sub-picture of the plurality of sub-pictures of said decoded video frame to a first full upsampled video frame and displaying the first full upsampled video frame as a first alternative background; switching, at the display device, between the first sub-picture of the plurality of sub-pictures and a second sub-picture of the plurality of sub-pictures of said decoded video frame; and upsampling the second sub-picture to a second full upsampled video frame after the switching and displaying said second full upsampled video frame as a second alternative background instead of the first full upsampled video frame; displaying a display effect in response to the switching; and wherein the display effect comprises at least one of the following: an illusion of an image which is broader than an image displayed before the switching; an illusion of an image which is higher than the image displayed before the switching; an illusion of an image which is broader and higher than the image displayed before the switching; and an illusion of an image which is, with respect to the image displayed before the switching, at least one of the following: horizontally distorted; and vertically distorted.