Patent ID: 8351055
Filing Date: 2013-01-08
Classification: G06F

Abstract:
1. A display apparatus comprising: a display screen; a processor; and a memory device storing instructions which when executed by the processor, causes the processor to: display an image on the display screen; detect a light beam representing an input received from an external source, wherein inputs received from the external source are inputs destined for a plurality of points on the display screen; generate information on a target located on said display screen to represent a series of inputs received from said external source on the basis of a timewise or spatial relation between input portions located on said display screen as portions receiving inputs from said external source; and recognize an event representing a change of a state of said target on the basis of said information on said target and generating information on said event; wherein said information on a target is attributes of said target at least including: identification information peculiar to said target; and information of coordinates of a position representing an input portion integrated with said target; and wherein said position representing the input portion integrated with said target is the center of gravity of said input portion or the center of said input portion.