Patent ID: 8648964
Filing Date: 2014-02-11
Classification: G06F,G09G,H04N

Abstract:
1. A multi-projection display system that joins together projected images that are projected onto a screen from a plurality of projector units to display the image as one image comprising: a plurality of sensor units that are provided in correspondence with said projector units and that detect brightness for each color of projected images that are projected onto said screen from said projector units and supply the detection results as output; wherein said projector units each include: an image signal correction unit that judges whether there is an adjacent projector unit arranged adjacent to its own projector unit, that generates a brightness correction table on the basis of the image signal of a specific picture element of a projected image realized by said adjacent projector unit and on the basis of the brightness of said specific picture element of the projected image of said adjacent projector unit that is detected by said sensor unit for matching the brightness of the projected image of its own projector unit with the brightness of the projected image of the adjacent projector unit, that refers to the generated brightness correction table to correct brightness for each color of image signals that are applied as input to its own projector unit, and that supplies as output brightness-corrected image signals that follow correction; and an image projection unit that projects light of each color onto a screen in accordance with image signals that are supplied from said image signal correction unit to display an image.