Patent ID: 8294752

Claim:
An image system, comprising: an image display device configured to display image; and image viewing eyeglasses used for viewing the image displayed by the image display device, wherein the image display device includes: a display portion configured to display the image in time series to be viewed using the image viewing eyeglasses; a synchronization signal generator configured to generate a synchronization signal in synchronization with frame of the image, the synchronization signal including prescribed bit series to transmit bit data described by the presence or absence of a pulse; and a synchronization signal transmitter configured to transmit the synchronization signal, and the image viewing eyeglasses include: an optical filter portion configured to adjust an amount of light transmitted to a left eye and/or a right eye of a viewer; a synchronization signal receiver configured to receive the synchronization signal transmitted from the synchronization signal transmitter; a synchronization signal analyzer configured to detect the bit series, analyze a pattern of the bit series during a predetermined detection time when the synchronization signal analyzer detects a first pulse received by the synchronization signal receiver, and generate control data to control the optical filter portion; and an optical filter controller configured to control the optical filter portion with the control data, wherein the image viewing eyeglasses comprise plural pairs of the image viewing eyeglasses, the synchronization signal transmitter transmits the synchronization signal to the synchronization signal receiver of each pair of image viewing eyeglasses, and the bit series of the synchronization signal received by the synchronization signal receiver of one of the plural pairs of the image viewing eyeglasses are different from the bit series of the synchronization signals received by the synchronization signal receiver of another pair of the image viewing eyeglasses.