| 摘要 |
PURPOSE: To provide a three-dimensional image without requiring any wiring between a monitor side device and spectacles by outputting a signal to a shutter means so as to alternately switch the shield and transmission of the shutter means to right and left eyes corresponding to the output of a synchronizing signal separated by a synchronizing signal separator circuit. CONSTITUTION: A video signal from a monitor 7 and external light are inputted to a photodetection sensor 1 embedded in the spectacle frame of shutter spectacles 6, the external light component is removed and the video signal is outputted. The video signal is inputted to a vertical synchronizing separator circuit 2, and a vertical synchronizing signal is separated. That synchronizing signal is inverted by a switching circuit 3, inputted to a delay circuit 4 and delayed so that total delay time can be one field. A shutter driving circuit 5 is operated corresponding to the signal from the delay circuit 4, shutter drive signals are outputted to a right lens 6R and a left lens 6L of the shutter spectacles 6, and the shutter is switched to shield and transmission synchronously with the switching of video signals. |
