JPS62132491A - Display device of pseudo stereoscopic picture - Google Patents

Abstract

PURPOSE:To sharply reduce the occurrence of flickers, by providing a switching device which performs the picture switching of a display device and the opening/ closing switching of a shutter synchronously to each other. CONSTITUTION:A right-eye image and left-eye image respectively obtained from a right-eye camera 1 and left-eye camera 2 are inputted to a switching device 3 and projected to a CRT 4 under a condition where they are alternately switched to each other at every field at speed which is twice as fast as that of NTSC system by the switching device 3. Moreover, both windows of a shutter 5 are alternately opened and closed synchronously to the switching of the picture of the CRT 4 by the switching device 3. Since the switching of the picture of the CRT 4 and the opening and closing of the shutter 5 are synchronously performed at the speed which is twice as fast as that of conventional systems in such way, the time frequency of the bright and dark to one eye becomes 60Hz and a stereoscopic picture which is similar to those of conventional systems can be seen. Therefore, a pseudo stereoscopic picture can be seen under a condition where the occurrence of flickers is sharply reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display device that allows images from a video camera, a video disc, etc. to be viewed in pseudo-stereoscopic form.

[Conventional technology]

Conventionally, for example, a pseudo three-dimensional image was displayed on an NTSC screen. FIG. 1 shows the configuration of a conventional pseudo-stereoscopic image display device, and FIG. 2 is a diagram showing the characteristics of visual perception. In the figure, 1 is a right eye camera, 2 is a left eye camera,
3 is a switching device that switches the two images from the cameras 1 and 2 field by field, and in synchronization with it, alternately opens and closes a shutter, which will be described later, one eye at a time; 4 is a display device that displays the switched images; 5 is a viewer It is a shutter that is placed in front of the window and opens and closes alternately on both windows.

Next, the operation will be explained. The right-eye image and the left-eye image captured by the right-eye camera 1 and the left-eye camera 2 enter a switching device 3, and are alternately switched field by field by the switching device 3 and displayed on a display device 4. Further, the shutter 5 is operated in synchronization with the switching of images by the switching device 3 mentioned above.
, both windows of ivy 5 are opened and closed alternately. Here, when the right-eye and left-eye images are displayed, each of the right-eye and left-eye windows opens, and the other closes.

By synchronizing the switching of images on the display device and the opening and closing of the shutter in this way, the image displayed on the display device appears quasi-stereoscopic.

[Problem that the invention seeks to solve]

Since the conventional pseudo-stereoscopic image display device is configured as described above, the temporal frequency of brightness and darkness for one eye is NTSC.
In the method, it is 30Hz, and as shown in the second diagram,
There was a problem in that the frizz was quite noticeable.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a pseudo-stereoscopic image display device that can display pseudo-stereoscopic images in the same way as in the past, and in which flicker is not noticeable.

[Means for Solving the Problems] The pseudo-stereoscopic image display device according to the present invention is designed to mutually synchronize the image switching (negative) of the display device and the opening/closing of the shutter at a faster speed than the standard television system. This is what I did.

[Effect]

In this invention, since the cutting of the image on the display device and the opening and closing of the shutter are performed in synchronization at a high speed, the temporal frequency of brightness and darkness for one eye becomes large, and flicker is less likely to be felt.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure shows the configuration of a pseudo-objective three-dimensional image display device according to an embodiment of the present invention. In the figure, 1, 2, and 3 are the same as those in the conventional example. 4 is a CRT device W (display device) that interlaces at twice the speed of the NTSC system, and 5 is a shutter placed in front of the viewer, which alternately opens and closes two windows for the right and left eyes.

Next, the operation will be explained. The right-eye image and the left-eye image obtained from the right-eye camera 1 and the left-eye camera 2 enter the switching device 3, where they are alternately switched field by field at twice the speed of the NTSC system and sent to the CRT 4. It will be displayed. In addition, the shutter 5 alternately opens and closes both windows of the shutter 5 in synchronization with the switching of images on the CRT 4 by the switching device 3. Here, when images for the right eye and for the left eye are displayed, each of the windows for the right eye and the left eye opens, and the other window closes.

In this way, the switching of CRT images and the opening and closing of the shutter are synchronized at twice the speed of conventional systems, so the temporal frequency of brightness and darkness for each eye is 60 Hz, giving the same three-dimensional effect as before. You can view the image, and your eyes will hardly experience any flickering.

In addition, in the above embodiment, images directly input manually from the camera are used, but it is also possible to use a video package such as a video disc in which images for the right eye and images for the left eye are inputted from the camera and recorded in chronological order for each field. It may also be a reproduced image.

Furthermore, although the ink tracing speed of the display device is twice that of the NTSC system in the above embodiment, it does not matter how fast it can be as long as the flicker does not disturb the eyes due to brightness and darkness. In addition, in this embodiment, NT is used as the television control system.
The explanation is for the SC method, but PAL, SE
A standard method such as CAM may be used.

〔Effect of the invention〕

As described above, according to the present invention, the switching of images on the display device and the opening and closing of the shutter are synchronized at a faster speed than before, so that it is possible to display pseudo-stereoscopic images as in the past with a large flicker. There is an effect that can be seen by reducing it.

1? FIG. 2, which is a block diagram of the J-like stereoscopic image display device, is a time-frequency characteristic diagram of the brightness and darkness of the eyes.

In the figure, 1 is the right eye camera, 2 is the left eye camera,
3 is a switching device, 4 is a display device (CRT device), and 5 is a shutter.

Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) In a pseudo-stereoscopic display device that can display images in pseudo-stereoscopic form, two cameras are placed to serve as the right and left eyes, respectively, and the two images obtained from the cameras are displayed in a standard TV format. A display device that alternately switches and displays images with a number of images displayed per second that is greater than A pseudo-stereoscopic video display device comprising: a shutter that alternately opens and closes both windows in synchronization; and a switching device that switches images of the display device and opens and closes the shutter in synchronization with each other. .