JPH06347723A - Display device - Google Patents

Abstract

PURPOSE:To observe a stereoscopic video together with a background video. CONSTITUTION:A video for the left eye and video for the right eye are alternately switched by every field and displayed on a display part 11. An observer observes the videos through a half mirror 13 and liquid crystal shutter spectacles 112. When the video for the left eye is displayed on the display part 11, the spectacles 112 make observation only by the left eye of the observer possible, and when the video for the right eye is displayed, the spectacles 112 make the observation only by the right eye possible. Thus, the stereoscopic video (virtual image) 100 is observed. Since the half mirror 13 transmits the background video, the observer observes the background.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device capable of displaying a predetermined image together with a background image.

[0002]

2. Description of the Related Art FIG. 8 shows the configuration of an example of a conventional display device. A predetermined image (a monaural image that is not a stereoscopic image) is displayed on the display unit 11. The display unit 11 is composed of, for example, an LCD, a CRT or the like. The image displayed on the display unit 11 is reflected by the half mirror (beam splitter) 13 and the eyes 14 of the observer.
Is incident on. Thereby, the observer observes the image displayed on the display unit 11 as the virtual image 19.

[0003]

By the way, in the conventional device, what is displayed is not a stereoscopic image but a monaural image, and its display position also corresponds to the positional relationship between the display unit 11 and the half mirror 13. Then, the fixed position was decided uniquely, and there was a problem that the change was scarce.

Although an observer can observe the background 20 of the virtual image 19 through the half mirror 13,
When the background 20 is bright, the virtual image 19 becomes relatively dark,
There is a problem that the virtual image 19 becomes difficult to see.

The present invention has been made in view of such a situation, and enables a stereoscopic image to be displayed instead of a monaural image, and the virtual image 19 becomes difficult to see even when the background 20 is bright. It suppresses that.

[0006]

A display device according to claim 1 is a display unit for displaying a predetermined image composed of a left-eye image and a right-eye image corresponding to a parallax of a human eye, and a display unit. When the left-eye image is displayed on the display unit 11, the half mirror 13 that reflects the image displayed on the display 11 toward the viewer and transmits the background image facing the viewer toward the viewer, A liquid crystal shutter that allows the observer's left eye to be observed, the right eye to be unobservable, and allows the observer's right eye to be observed and the left eye to be invisible when the right eye image is displayed. And eyeglasses 112.

According to a second aspect of the present invention, a display device displays a predetermined image including a left-eye image and a right-eye image corresponding to the parallax of a human eye, and displays a background image facing the observer to the observer. When the left eye image is displayed on the display 111 and the display 111 as a display unit that is transparent to the viewer, the left eye of the observer can be observed, and
When the right eye is unobservable and the right eye image is displayed,
The liquid crystal shutter glasses 112 make it possible to observe the right eye of the observer and not to observe the left eye.

[0008]

In the display device according to claim 1, corresponding to the left-eye image and the right-eye image displayed on the display unit 11, only one of the left eye and the right eye of the observer is displayed by the liquid crystal shutter glasses 112. Since it is made observable, the observer can observe a stereoscopic image. At this time, the background image can be observed through the half mirror 13.

In the display device according to the second aspect, the liquid crystal shutter glasses 112 observe only one of the left eye and the right eye of the observer corresponding to the left eye image and the right eye image displayed on the display 111. to enable. This allows the observer to observe the stereoscopic image and the background image via the display 111. When an image is displayed on the display 111, the background image becomes invisible due to the image. Therefore, even when the background is bright, the display 111
It is possible to suppress the difficulty of seeing the image.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of an embodiment of a display device of the present invention. In this embodiment, for example, an NTSC video signal generated by the computer 4 is output to the display unit 11 and displayed.
The display unit 11 is composed of, for example, an LCD, a CRT or the like. The image displayed on the display unit 11 is reflected by the half mirror (beam splitter) 13. The observer observes this reflected light through the liquid crystal shutter glasses 112.

The liquid crystal shutter spectacles 112 are spectacles 112L facing the left eye and spectacles 112 facing the right eye of the observer.
It is composed of R.

A position sensor 112a is attached to the liquid crystal shutter glasses 112. The three-dimensional coordinate measuring device 3 includes a liquid crystal controller 3a and a sensor controller 3
The liquid crystal controller 3a is configured by b, and controls the shutter operation of the liquid crystal shutter glasses 112. The sensor controller 3b monitors the output of the position sensor 112a, detects the three-dimensional position of the liquid crystal shutter glasses 112, digitizes the position information, and outputs it as digital information to the computer 4. There is. Calculator 4
Supplies a signal corresponding to the vertical synchronizing signal of the video signal output to the display unit 11 and a field discrimination signal to the liquid crystal controller 3a. The liquid crystal controller 3a responds to this vertical synchronization signal by spectacles 112L and spectacles 112R.
It is designed to switch between and.

FIG. 2 shows a more detailed configuration example of the position sensor 112a attached to the liquid crystal shutter glasses 112 and the sensor controller 3b. As shown in the figure, the sensor controller 3b has a source (quadrature coil) 24. The source 24 includes a coil 24x that generates a magnetic field in the x-axis direction, a coil 24y that generates a magnetic field in the y-axis direction, and a coil 24z that generates a magnetic field in the z-axis direction. The position calculation unit 22 drives these three coils in a time division manner via the drive circuit 23. As a result, the magnetic fields in the x, y, and z directions are sequentially generated.

On the other hand, the position sensor 112a also has a coil 112ax for detecting a magnetic field in the x-axis direction, a coil 112ay for detecting a magnetic field in the y-axis direction, and a coil 112az for detecting a magnetic field in the z-axis direction. Position sensor 112
The detection signals detected by these coils of a are supplied to the detection circuit 21 of the sensor controller 3b.

The detection circuit 21 digitizes the detection signal supplied from each coil of the position sensor 112a and outputs it to the position calculation section 22. That is, the position calculator 22 receives the detection signals corresponding to the magnetic fields generated by the source 24 in the three axial directions. The position calculation unit 22 receives the position of the liquid crystal shutter glasses 112 in the three-dimensional direction from this input,
And posture (azimuth, elevation and roll)
Is calculated and the calculation result is output to the computer 4.

The position sensor 112a and the sensor controller 3b as described above are, for example, 3 manufactured by Polhemus.
Commercialized as SPACE ™. Alternatively, the position sensor 112a and the sensor controller 3
b is Cry of Stereo Graphics, Inc.
It is also possible to apply a measurement method using ultrasonic waves, which is commercialized as stall EYES (trademark).

FIG. 3 shows an electrical configuration of the display device shown in FIG. As shown in FIG.
The video signal output by is output to the display unit 11 and displayed. This display image is composed of a left eye image and a right eye image corresponding to the parallax of the human eye. Then, for example, the left-eye image is an odd-field image, and the right-eye image is an even-field image. That is, the left-eye image and the right-eye image are alternately displayed for each field.

The computer 4 outputs a signal to the display unit 11 and a signal corresponding to the vertical synchronizing signal of the video signal to be displayed (FIG. 4A).
And the field discrimination signal (FIG. 4B) are output to the liquid crystal controller 3a. The liquid crystal controller 3a switches the shutters of the left eyeglass 112L and the right eyeglass 112R in synchronization with these signals. That is, when the left-eye image (image in the odd field) (FIG. 4C) is displayed on the display unit 11, the left eyeglass 112L is controlled so as to transmit light. Further, the right glasses 112R are controlled so that light does not pass therethrough. On the other hand, when the right eye image (image of an even field) is displayed on the display unit 11, the right eyeglass 112R is controlled to transmit light and the left eyeglass 112L is controlled to block light. .

That is, the observer observes this image with the left eye when the left eye image is displayed on the display unit 11, and with the right eye when the right eye image is displayed on the display unit 11. Will be observed. As a result, the observer observes this display as the stereoscopic image 100.

Furthermore, the computer 4 includes a position sensor 1
The position data of the liquid crystal shutter glasses 112 output by 12a is input via the sensor controller 3b.
The computer 4 corrects the video signal output and displayed on the display unit 11 from these data, and even if the observer changes the observation position (including the posture), the stereoscopic image 100 is
The display is controlled so that it always appears in a fixed position.

FIG. 5 schematically shows how a stereoscopic image is displayed by an observer. As shown in the figure,
The left-eye image and the right-eye image displayed on the display unit 11 are reflected by the half mirror 13, and the liquid crystal shutter glasses 11
It is incident on the observer's eye 14 via 2. As described above, the left-eye image is incident on the observer's left eye, and the right-eye image is incident on the observer's right eye. As a result, the viewer will recognize this image as a stereoscopic image (virtual image) 100.

The half mirror 13 reflects the light emitted from the display unit 11 toward the observer, and transmits the existing background image facing the observer. As a result, the observer can observe the stereoscopic image 100 in the background actually developed in front of his / her eyes.

FIG. 6 shows a second display device according to the present invention.
The example of is shown. In this embodiment, the display 1 in FIG. 1 is changed to the display 111. Other configurations are similar to those in FIG. That is, the display 111 in this embodiment is
For example, it is composed of a transmissive display such as an LCD. The display 111 alternately displays a left-eye image 100L and a right-eye image 100R for each field. Since the observer observes this image via the left eyeglass 112L or the right eyeglass 112R, respectively,
The stereoscopic image 100 will be observed.

When a predetermined image is displayed on the display 111, the light of the background image is blocked by the image displayed on the display 111 and cannot be observed. Therefore, it is possible to prevent the stereoscopic image 100 from being difficult to see even when the background is bright. still,
The display 111 is controlled to allow the background image to pass therethrough in the pixels where the left-eye image and the right-eye image are not substantially displayed.

FIG. 7 shows the left eye image 1 on the display 111.
When 00L and the right-eye image 100R are displayed, the stereoscopic image 10
The principle that 0 is observed is schematically shown.

That is, the left eye image 10 is displayed on the display 111.
When 0L is displayed, the right glasses 112R are closed and only the left glasses 112L are released. Therefore, the left eye 14L of the observer observes the left eye image 100L. On the other hand, when the right eye image 100R is displayed on the display 111, the left glasses 112L are closed and only the right glasses 112R are released. As a result, the observer observes the right eye image 100R with the right eye 14R. The left-eye image 100L and the right-eye image 100R are displayed at slightly different positions corresponding to the parallax. As a result, the composite image of the left-eye image 100L and the right-eye image 100R displayed alternately for each field becomes a stereoscopic image (virtual image) 100.

[0027]

As described above, according to the display device of the first aspect, the left-eye image and the right-eye image displayed on the display section are observed through the half mirror and the shutter glasses. It becomes possible to observe a stereoscopic image in the image.

Further, according to the display device of the second aspect, the left-eye image and the right-eye image displayed on the display unit capable of transmitting the background image are observed through the shutter glasses. Even when the image is bright, it is possible to easily observe the stereoscopic image.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a first embodiment of a display device of the present invention.

FIG. 2 is a diagram showing a more detailed configuration of a position sensor 112a and a sensor controller 3b shown in FIG.

FIG. 3 is a block diagram showing an electrical configuration of the embodiment shown in FIG.

FIG. 4 is a flowchart illustrating an operation of the embodiment of FIG.

5 is a diagram illustrating the principle of displaying a stereoscopic image according to the embodiment of FIG.

FIG. 6 is a diagram showing a configuration of a second embodiment of a display device of the present invention.

7 is a diagram illustrating the principle of displaying a stereoscopic image according to the embodiment of FIG.

FIG. 8 is a diagram showing a configuration of a conventional display device.

[Explanation of symbols]

 1 Display 3 3 Dimensional Coordinate Measuring Device 3a Liquid Crystal Controller 3b Sensor Controller 4 Calculator 11 Display 13 Half Mirror 19 Virtual Image 20 Background 21 Detection Circuit 22 Position Calculator 23 Drive Circuit 24 Source 100 Stereoscopic Image 111 Display 112 Liquid Crystal Glasses 112a Position Sensor

Claims (2)

[Claims] 1. A display unit for displaying a predetermined image consisting of a left-eye image and a right-eye image corresponding to the parallax of a human eye, and reflecting the image displayed on the display unit toward an observer. A half mirror that transmits a background image facing the observer toward the observer, and when the left eye image is displayed on the display unit, while allowing the observer to observe the left eye, A display device, comprising: shutter glasses that make the right eye of the observer invisible and the left eye of the observer invisible when the right eye is displayed. . 2. A display unit for displaying a predetermined image composed of a left-eye image and a right-eye image corresponding to the parallax of a human eye, and transmitting a background image facing the observer toward the observer. When the left eye image is displayed on the display unit, the left eye of the observer is observable, the right eye is not observable, and when the right eye image is displayed, the observer And a shutter eyeglass that allows the left eye to be invisible and the left eye to be invisible.