Patent ID: 8167431
Filing Date: 2012-05-01
Classification: A63F,H04N

Abstract:
1. In an apparatus comprising an output for transmitting 2D video data and 3D video data, a method for activating 3D output of the apparatus comprising the steps of: coupling a peripheral device to a system bus of the apparatus via a system bus compatible cable; the peripheral device transmitting over the bus to an operating system of the apparatus a request to transmit to the output multiple image stream 3D video data and a request to access a video subsystem of the apparatus for monitoring a status of page flip signals; responsive to accessing the video subsystem, the peripheral device transmitting sync signals to at least one output of the peripheral device representing the page flip signals detected in response to monitoring the status of the page flip signals; the apparatus transmitting the multiple image stream 3D video data to the output in response to the request; coupling an input of a stereographic projection apparatus to the output of the apparatus; receiving at the stereographic projection apparatus input the multiple image stream 3D video data, each of the multiple image stream 3D video data containing a plurality of frames; and wherein the stereographic projection apparatus comprises an alternating polarizing filter for separately filtering images from each of the multiple image stream 3D video data at different polarization angles, wherein the alternating polarizing filter comprises a rotating filter wheel, and wherein the stereographic projection apparatus synchronizes rotation of the filter wheel with said alternately projecting images from each of the multiple image stream 3D video data in response to receiving the sync signals.