IMAGE PROJECTION APPARATUS AND METHOD OF CONTROLLING SAME

摘要

An image projection apparatus includes: an illuminance sensor for measuring surrounding illuminance; an image data processing unit that increases a gradation value of the image data in accordance with brightness of the image data; a set information storage unit for storing at least two or more pieces of correspondence information for each range of the obtained illuminance, the information indicating correspondence between the brightness of the image data and power a light source that increases in accordance with the brightness; a total control unit for determining the lamp power by referring to a table indicating the correspondence information, based on the obtained brightness of the image and the illuminance; and a projection unit for projecting with the determined lamp power the image data, wherein in the correspondence information, a value of the lamp power is set lower as the illuminance becomes lower.

主权项

1. An image projection apparatus, comprising:
an external connection unit configured to receive an input of image data; an illuminance sensor configured to measure surrounding illuminance; an image data processing unit configured to increase a gradation value of the image data in accordance with brightness of the image data; a set information storage unit configured to store therein at least two or more pieces of correspondence information for each range of the obtained illuminance, the pieces of correspondence information indicating correspondence between the brightness of the image data and lamp power of a lamp serving as a light source, the lamp power increasing in accordance with the brightness; a total control unit configured to determine the lamp power of the lamp by referring to a table indicating the correspondence information stored in the set information storage unit, based on the obtained brightness of the image and the illuminance; and a projection unit configured to project with the determined lamp power the image data having the gradation value increased, wherein in the correspondence information, a value of the lamp power is set lower as the illuminance becomes lower.