Patent ID: 9113161
Filing Date: 2015-08-18
Classification: G09G,H04N

Abstract:
1. Video viewing glasses comprising: a couple of optical filters which allow light to transmit toward left and right eyes, respectively, a synchronizing signal receiver configured to receive four kinds of external synchronization signals, which include a first synchronization signal to open the optical filter for the left eye, a second synchronization signal to close the optical filter for the left eye, a third synchronization signal to open the optical filter for the right eye and a fourth synchronization signal to close the optical filter for the right eye; and an optical filter controller which generates internal synchronization signals in the video viewing glasses after the synchronizing signal receiver receives the four kinds of the external synchronization signals, the optical filter controller then operating the optical filters by means of the internal synchronization signals, wherein the optical filters have response characteristics defined so that it takes a first time length after the synchronizing signal receiver receives the four kinds of the external synchronization signals and a second time length after the optical filter controller generates the internal synchronization signals for an opening rate of the optical filters to be a predetermined value, and wherein the optical filter controller delays timings of generating the internal synchronization signals from a reception time of each of the four kinds of the external synchronization signals by a time length in correspondence to a difference between the first and second time lengths.