Patent ID: 9182852
Filing Date: 2015-11-10
Classification: G06F,H04N

Abstract:
1. A projection apparatus which cooperates with a pointing device, the projection apparatus comprising: an image input unit which inputs an image signal from an external device which is configured to output a plurality of screen sections; a projection unit which projects, on a screen, an image on which coordinate information common to the plurality of screen sections has been superimposed, according to the image signal input to the image input unit, wherein the plurality of screen sections are not simultaneously displayed; a coordinate acquisition unit which acquires, from the pointing device, a coordinate position based on the coordinate information superimposed on the image projected by the projection unit; an image processing unit which determines whether or not, in the image projected by the projection unit, image data of a projected image region corresponding to the coordinate position acquired by the coordinate acquisition unit includes predetermined image data; a correction unit which, when the image processing unit determines that the image data of the projected image region corresponding to the acquired coordinate position does not include the predetermined image data, corrects the coordinate position acquired by the coordinate acquisition unit by an increment of a given value that is based on a screen ID indicating which one of the plurality of screen sections the external device is currently outputting; and a transmission unit which transmits the coordinate position corrected by the correction unit to the external device.