JPS62176394A - Pseudostereoscopic video display device - Google Patents

Abstract

PURPOSE:To prevent the flicker from being struck by providing field memories for the right and left eyes respectively storing picture signals for the right and left eyes and constantly displaying pictures for the right and left eyes on picture display devices for the right and left eyes. CONSTITUTION:The picture signals for the right and left eyes are alternately reproduced from a video disk 10 by a video disk player 11, at the same time, a switching signal 12a is generated, switches S1-S3 are switched to a contact (a) side when the picture signal for the left eye is generated, and to a contact (b) side when the picture signal for the right eye is generated, respectively. When the picture signal for the left eye is generated, the signal is directly inputted to the picture display device 1 for the left eye and displayed and when the picture signal for the right eye is generated, the picture signal for the left eye recorded before one field in the field memory 8 for the left eye is inputted and displayed. Similarly, in the picture display device 2 for the right eye, after the picture signal for the right eye is directly or once stored in the field memory 9, thereafter, inputted and displayed and the pictures for the right and left eyes are constantly displayed on the picture display devices 1, 2.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention provides a display device that uses one image memory such as a video disk to create two images for the right eye and for the left eye, and displays an image with a three-dimensional effect. It is related to.

[Conventional technology]

Conventionally, when playing back a video package in which the right-eye and left-eye image signals of the TV signal of the television standard format are recorded in chronological order for each field, when playing the right-eye image, the right-eye image is Since the image is displayed only on the display device, nothing is displayed on the left-eye image display device, and when playing back images for the left eye, the image is displayed only on the left-eye image display device, so nothing is displayed on the right-eye image display device. It didn't show up.

FIG. 3 shows the configuration of a conventional pseudo-stereoscopic image display device. In the figure, 1.2 is a left-eye and right-eye image display device that displays left-eye and right-eye images, respectively, and 3 is a left-eye image display device 1. 4 is a polarizing plate placed in front of the screen of the right-eye image display device 2, and both polarizing plates 3.
4 have a phase difference of 90° from each other. 5 is a polarizing plate for the left eye that has the same phase as the polarizing plate 3; 6 is a polarizing plate for the right eye that has the same phase as the polarizing plate 4; 7 is a polarizing plate for the right eye that has the same phase as the polarizing plate 4; and 7, the light that is incident on one surface is transmitted, and the light that is incident on the other surface is reflected. The transparent half mirror faces the left-eye image display device 1, and the reflective surface faces the right-eye image display device 2. Reference numeral 10 denotes a video disk on which right-eye and left-eye image signals of a TV signal of a television standard system, for example, the NTSC system, are recorded in time series for each field, and 11 a video disk on which image signals are generated by reproducing the video disk 10. A player, which also generates a switching signal 12, which will be described later. S is a switch for changing the connection between the video disc player 11 and both image display devices 1.2, and has contacts a and b. 12
is a switching signal for switching the switch S to the contact point a or contact point s when reproducing an image for the left eye or for the right eye, respectively.

Next, the reproducing operation of the conventional device will be explained with reference to FIG. FIG. 2 is a diagram showing the switching timing of the switch according to the switching signal, and FIG. 4 is a time-frequency characteristic diagram of brightness and darkness that causes flickering to the eye.

First, the video disc player 11 alternately reproduces left-eye and right-eye image signals from the video disc 10.
At the same time, a switching signal 12 is generated from the player 11, whereby the switch S is switched to contact a when the left-eye image signal is generated and to contact s when the right-eye image signal is generated. The alternately generated left-eye and right-eye image signals are input to the left-eye and right-eye image display bags W1 and W2, respectively, and displayed. The displayed image for the left eye passes through the polarizing plate 3 and the half mirror 7, and passes only through the polarizing plate 5 for the left eye to be seen with the left eye, while the image for the right eye passes through the polarizing plate 3 and the half mirror 7.
The light passes through, is reflected by the half mirror 7, passes only through the right eye polarizing plate 6, and is seen by the right eye.

By viewing the left-eye image and the right-eye image, which are alternately switched and displayed in this way, with the left eye and the right eye, respectively, it is possible to see an image with a pseudo-stereoscopic effect.

[Problem that the invention seeks to solve]

Conventional pseudo-stereoscopic image display devices are configured as described above, so one eye can only see an image every other field, and the temporal frequency of brightness and darkness per eye is 30 Hz in the case of the NTSC system. As shown in Figure 4, there was a problem in that flicker was noticeable.

The present invention was made in order 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 images with a three-dimensional effect in the same manner as before, and that does not cause flickering. shall be.

[Means for solving problems]

A pseudo-stereoscopic image display device according to the present invention is provided with field memories for left eye and right eye for storing image signals for left eye and right eye, respectively, and outputs the image signal for left eye from the generating means to the image display device for left eye and The image signal of the right eye field memory is input to the right eye image display device at the same time as the image signal is input to the field memory, and the right eye image signal from the generating means is input to the right eye image display device and the field memory at the same time. The image signal of the field memory is input to the left eye image display device.

[Effect]

In the present invention, left-eye and right-eye field memories are provided for storing left-eye and right-eye image signals, respectively, and when the left-eye image signal from the generating means is input to the left-eye image display device, the right-eye image signal is input to the left-eye image display device. When the image signal in the field memory is input to the right eye image display device and the right eye image signal from the generating means is input to the right daily image display device, the image signal in the left eye field memory is input to the left eye image display device. As a result, the left-eye and right-eye images are always displayed on the left-eye and right-eye image display devices, and the images can be viewed in both memories at all times.
/,> You can view images with a three-dimensional effect without experiencing flicker.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a pseudo-stereoscopic image display device according to an embodiment of the present invention, and in the figure, 1 to 7.10 indicate the same reference numerals as in FIG. 3. 8 is a left eye field memory for storing a left eye image signal, 9 is a right eye field memory for storing a right eye image signal, and 11 is a video disc player that reproduces the video disc 10 to generate an image signal. This also generates a switching signal 12a, which will be described later. S, ,S, ,S, is video disc player 1
1. Field memory for left eye/right eye 8, 9, left eye/
This is an interlocking switch for switching the signal connection between the right eye image display device 1 and 2, and the contact a side (al + a2 +
a3) or b side (bt, bz, b,) in conjunction with each other. 12a each sets the switches S1, Sz, and S3 to the contact a side (at+at) during left-eye or right-eye image reproduction.

This is a switching signal for switching to the b side (bt, bz, bs).

Next, the reproduction operation of this apparatus will be explained with reference to FIG. FIG. 2 is a diagram showing the switching timing of the switch according to the switching signal, and FIG. 4 is a diagram showing the time-frequency characteristics of brightness and darkness that confuses the eye with flicker.

First, the video disc player 11 alternately reproduces left-eye and right-eye image signals from the video disc 10.
At the same time, the switching signal 12a is generated from the player 11, and the switches S, ~S, are set to the contact a side (a, xa,) when the left eye image signal is generated, and to the contact side when the right eye image signal is generated. (bt"bz).The left eye and right eye image signals alternately generated are switched to switches St, St, or S, respectively.
The signal is input to the left-eye/right-eye image display device 1.2 via the switch S1, and is also input to the left-eye/right-eye field memory 8.9 via the switch S1. When a left eye image signal is generated, the signal is directly input to the left eye image display device 1 and displayed, and when a right eye image signal is generated next, the signal is input to the left eye image display device 1. The left-eye image signal recorded one field before in the left-eye field memory 8 is manually input and displayed. On the other hand, in the right eye image display device 2, the right eye image signal is similarly input and displayed either directly or after being stored in the -H field memory 9, and as a result, the right eye image signal is input and displayed on each left eye and right eye image display device 1.2. is for the left eye.

The right eye image will always be displayed. Kannon then sends the images for the left eye and right eye to the polarizing plates 3 and 4. half mirror 7
, through the left-eye and right-eye polarizing plates 5.6, the images can be viewed continuously with the left and right eyes, respectively.

In this way, with this device, Fuyume can see all the fields, and the temporal frequency of the brightness and darkness of the eyes is twice that of the conventional one6.
0Hz, and flicker is hardly felt.

In the above embodiment, the left-eye image and the right-eye image are combined using a half mirror, but they may also be projected onto a screen and combined. Also, the left-eye level and right-eye level of the switching signal can be set arbitrarily. It is also possible to reverse the contact points a and b of the switch while maintaining the correspondence. Furthermore, the television signal is not limited to the NTSC system, but may be any standard television system, such as the PAL system or the SECAM system.

In addition, in the above embodiment, in order to generate the image signals for the left eye and the right eye, a video disk in which the image signals for the right eye and the left eye of the television signal of the television standard system are recorded in time series for each field, and this is reproduced. A video disk player is used, but other video packages in which television signals of the television standard format are recorded in chronological order with images for the right eye and left eye, and a player for reproducing the same may also be used. Furthermore, any system may be used as long as it generates right-eye and left-eye image signals of the television standard format in time series for each field.

〔Effect of the invention〕

As described above, according to the present invention, left-eye and right-eye field memories are provided for storing left-eye and right-eye image signals, respectively, and the left-eye image signal from the generating means is input to the left-eye image display device. When the right eye field memory is input to the right eye image display device, the image signal from the left eye field memory is input to the right eye image display device, and when the right eye image signal from the generating means is input to the right eye image display device, the image signal from the left eye field memory is input to the right eye image display device. Since the image is input to the image display device for the winter, the image can be viewed continuously at all times, and the temporal frequency of brightness and darkness is doubled compared to the conventional image, which has the effect of making flicker almost unnoticeable. be.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a pseudo-stereoscopic image display device according to an embodiment of the present invention, FIG. 2 is a diagram showing switch switching timing according to a switching signal in an embodiment of the present invention and a conventional example, and FIG. 3 4 is a configuration diagram showing a conventional pseudo-stereoscopic image display device.
The figure is a time-frequency characteristic diagram of brightness and darkness that causes flickering to the eye. In the figure, 1 is an image display device for the left eye, 2 is an image display device for the right eye, 3.4 is a polarizing plate, 5 is a polarizing plate for the left eye, 6 is a polarizing plate for the right eye, 7 is a half mirror, and 18 is a field memory for the left eye. , 9 is a field memory for the right eye, 10 is a video disc, 11 is a video disc player, St , St
, Sz are switches. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) Generating means for time-sequentially generating right-eye and left-eye image signals for each field of a television signal in accordance with the television standard system, and generating right-eye and left-eye images, respectively, based on the right-eye and left-eye image signals, respectively. A right-eye and left-eye image display device for displaying images, a screen for projecting right-eye and left-eye images from both of the image display devices through polarizing plates having a phase difference of 90°, and a screen for displaying images on the screen. In a pseudo-stereoscopic image display device that displays images pseudo-stereoscopically, the pseudo-stereoscopic image display device includes right-eye and left-eye polarizers having the same phase as each of the above-mentioned polarizers for viewing through the image signals. and a field memory for the right eye and a field memory for the left eye for respectively storing the image signal for the right eye and inputting the image signal for the right eye outputted from the generating means to the image display device for the right eye and the field memory for the left eye. is input into the left-eye image display device, and the left-eye image signal output from the generating means is input into the left-eye image display device and field memory, and at the same time, the image signal of the right-eye field memory is input into the right-eye image display device. 1. A pseudo-stereoscopic video display device comprising: a control means for inputting information to an image display device.