Patent ID: 8408720
Filing Date: 2013-04-02
Classification: G06F,H04N

Abstract:
1. An image display apparatus for emitting laser light, displaying a first image on a first projection surface, and displaying a second image on a second projection surface comprising: a laser light source for outputting said laser light; a scanner for scanning said laser light; a light splitting element for splitting said laser light scanned by said scanner into a first laser beam directed to said first projection surface and a second laser beam directed to said second projection surface; a photodetector for detecting said second laser beam reflected by an external object on said second projection surface; and a controller for controlling an operation of said image display apparatus, said controller being configured: to allow said scanner to operate at a prescribed scanning frequency, to execute processing of accepting image data and increasing luminance of a pixel in a designated region included in accepted said image data, to control output of said laser light by said laser light source based on said image data subjected to said processing and said scanning frequency, to calculate a position of said external object based on a scanning position of said laser light at a light detection timing of said photodetector, and to create an instruction to change said second image based on calculated said position, wherein said controller is configured to define a region including calculated said position as said designated region, and a size of said designated region is larger than a distance of movement of said object in a time interval between changes of said second image.