Patent ID: 8282222
Filing Date: 2012-10-09
Classification: G01B,G02B,G03B,H04N

Abstract:
1. A device for scanned image projection, comprising: a light projection device that is arranged to generate an image on a projection screen by projecting a light beam on the projection surface; a tracer beam generator that is arranged to project a tracer beam on the projection surface; a location detector that is arranged to detect the location of a spot formed by the light beam on the projection surface by detecting a reflection of the tracer beam, such that the detected location includes a set of coordinates that define the location of the spot relative to the projection screen, and wherein the location detector is further arranged to provide location information based on the detected location; and a processor that is configured to predict a subsequent position of the light beam on the projection surface by determining a scanline trajectory of the light beam on the projection surface based, at least in part, on the location information; and further configured to control the light projection device to generate the image by controlling an intensity of each color component of the light beam based on the predicted subsequent position.