Patent ID: 8102561

Claim:
A method of controlling video playback using a handheld display device having an image sensor, a transceiver and an opaque touch-sensitive screen, said method comprising the steps of: overlaying said screen on part of a printed substrate containing printed content associated with a video; imaging an area of the printed substrate and generating image data using an optical sensor; determining interaction data using said image data, said interaction data identifying a page description corresponding to the printed substrate; sending the interaction data to a computer system, thereby causing the computer system to identify the page description and retrieve display data corresponding to the printed content and video data associated with said printed content; receiving the display data and video data from the computer system; displaying, on said opaque screen, display information corresponding to said printed content underlying said screen together with at least one static element for controlling video playback, such that the opaque screen has real-time virtual transparency through the opaque screen to the printed content underlying said screen from a user's perspective to provide a virtual window to the printed content underlying said screen; and controlling video playback by interacting with said at least one static element via said touch-sensitive screen.