Patent ID: 8890992

Claim:
A mobile electronic device comprising: an image projecting unit that projects an image in a projection area; an imaging unit that captures the image projected by the image projecting unit, and a processing unit that performs projection processing for causing the image projecting unit to project a predetermined image based on predetermined image information, wherein the image projecting unit projects the predetermined image based on a first image information, the imaging unit obtains a second image information by using a captured predetermined image projected by the image projecting unit, the processing unit further comprises a comparison determination unit that determines whether the predetermined image is the same as the captured predetermined image by comparing the first image information and the second image information, the processing unit suppresses projection performed by the image projecting unit when the comparison determination unit determines that the predetermined image is not the same as the captured predetermined image, the predetermined image is projected by the image projecting unit in an area that is smaller than the projection area and is included in the projection area, and the processing unit is configured to set the time, during which the image projecting unit projects the predetermined image based on the first image information, to be shorter than an updated cycle time during which the image is to be changed.