Method for projecting an image

摘要

A method of projecting an image onto a viewing surface uses scanning projector, such as a laser-beam-steering pico projector, which scans a laser beam across the viewing surface. Each pixel area on the viewing surface which is included within images defined by a high intensity display digital video data, and each pixel area on the viewing surface which is included within images defined by a low intensity display digital video data are scanned. The projector beam illuminates each pixel area on the viewing surface which is included within images defined by the high intensity display digital video data for a greater period of time than is spent illuminating each pixel area on the viewing surface which is included within images defined by other digital video data.

主权项

1. A method of projecting an image onto a viewing surface with a projector which repeatedly scans a laser beam across the viewing surface in a first scanning direction at a first scanning speed and repeatedly scans the laser beam across the viewing surface in a second scanning direction at a second scanning speed, said second direction being orthogonal to said first scanning direction and said second scanning speed being less than said first scanning speed, to display digital video data, comprising the steps of:
identifying that portion of the digital video data that is high intensity display digital video data and the portion of the digital video data that is low intensity display digital video data; providing a laser-beam-steering pico projector responsive to a digital video input for directing the projector beam in repeating sequence to each of a plurality of pixel areas on said viewing surface and illuminating said pixel areas with a color and intensity of laser beam light defined by digital video data provided at said digital video input; supplying digital video data to said digital video input of said laser-beam-steering pico projector; and altering the scanning speed of said laser-beam-steering pico projector such that the beam illuminates each pixel area on said viewing surface which is included within images defined by said high intensity display digital video data for a greater period of time than is spent illuminating the other pixel areas, wherein said each pixel area on said viewing surface which is included within images defined by said high intensity display digital video data for a greater period of time than is spent illuminating the other pixel areas represent construction points and lines.