Patent ID: 8933883
Filing Date: 2015-01-13
Classification: G06F

Abstract:
1. A light-tracking receiver for tracking and receiving a flickering light beam from a light-pointing device, the light-tracking receiver comprising: an image sensor for receiving the flickering light beam and generating a plurality of digital signals forming a plurality of successive two-dimensional frames; a digital signal processor for processing said plurality of digital signals and outputting output signals; and a central processing unit for determining light spot patterns of the flickering light beam according to a position and frequencies of the light spot pattern of the of the flickering light beam in a plurality of successive two-dimensional frames by analyzing an appearance and disappearance frequency of the light spot patterns in said plurality of successive two-dimensional frames wherein the frequency of the light spot patterns of the flickering light beam is determined according to a capture rate of the plurality of successive two-dimensional frames.