Patent ID: 9602788
Date: 2017-03-21
CPC Classifications: E04H,G03B,H04N

Claim:
1. A projection device management system comprising: two or more projection devices which project images on a plurality of projection surfaces, creating a unified image on the entire plurality of projection surfaces; and a management device which corrects the image projected by the projection device based on analyzed differences in shape, material, color, reflectivity or brightness of the plurality of projection surfaces on which the two or more projection devices create a unified image, and manages information for maintenance of each projection device, the information for maintenance including operation time information of a lamp or a cooling fan installed in the projection device, brightness information of the lamp, information on difference in brightness between lamps installed in the two or more projection devices, position information of the projection device, or temperature or humidity information of the projection device, wherein the two or more projection devices are installed in the same theater, wherein the plurality of projection surfaces are arranged so as not to be parallel to each other, and to surround an auditorium in the theater, and wherein the plurality of projection surfaces comprise different types of projection surfaces.