3-dimensional personal computer system

The system is composed of a personal computer, a video display, video cassette recorder (VCR), two video cameras, a 3-D scope with TN-type, high-speed, liquid-crystal shutter, and 3-D adapter used for driving the 3-D scope. To achieve stereoscopic imaging, the system uses time-sharing alternate imaging based on binocular parallax. The time-sharing period is 1/60 second, which is a single vertical period of the NTSC TV standard. The system alternately presents images for the left and right eyes on the screen at a 1/60-second period while synchronously driving the 3-D scope in which liquid-crystal shutters alternately shut up the left and right eyes of the viewer. Thus, the viewer´s left eye always sees only the image for the left eye and the right eye always sees only that for the right eye.