JPH10153990A - Picture display device and three-dimensional display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a picture display device and a three-dimensional display device outputting a specific picture in the direction of a watcher as a watch moves. SOLUTION: This device is provided with a display element 1 displaying a picture, a slit 2 of which an opening position can be changed, a lens 3 transmitting a picture displayed on the display element 1 to an opening position, the other lens 4 outputting a picture from the opening position to a watcher side, and a controller 5 having plural frame memories, the controller 5 selects a frame memory based on information from a position detector 7, transfers a picture recorded in a frame memory to the display element 1, also selects an opening position, and controls an output direction of the picture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image display device and a stereoscopic display device capable of displaying different images by changing an observation position.

[0002]

2. Description of the Related Art At the University of Cambridge, UK, a display capable of continuously changing the light output direction and displaying images taken from different angles to allow the observer to change the position of the face so that the observer can view stereoscopically is studied. (Ref. 1, "The Seventh Eurographics Workshop on Graphics Hardware")
(SRLang, the Seventh Eurographics Workshop on Gr
aphics Hardware 5-6 1992)). The principle of this method is shown in FIG.
Shown in

In FIG. 7, images taken from a plurality of angles are continuously displayed on a display element 71 within a unit time, and the opening position of a slit 72 is moved in the direction of an arrow by a controller 75 in conjunction therewith. The optical path formed by the lens 73 and the lens 74 changes, and images are displayed in directions corresponding to the respective photographing directions of the plurality of images output from the image generator 76. By changing the angle at which the observer views the image,
Images in different directions can be obtained.

[0004]

However, in the above-mentioned conventional method, in order to display an image in a direction other than the direction of the observer in the case of only one observer, when the plurality of images are n, Is 1 / n, and the loss of brightness is large. Further, there is a problem that the observer can observe only in the lateral direction.

[0005]

According to the present invention, there is provided an image display apparatus comprising: display means for displaying an image; a slit capable of changing an opening position; and an image displayed by the display means being transmitted to the opening position. A lens, another lens for outputting an image from the opening position to the observer side, a position detector for detecting the position of the observer, a plurality of frame memories for recording images, and the position detector A controller for selecting the frame memory based on the information from the controller, transferring the image recorded in the frame memory to the display means, and controlling the output direction of the image by selecting an opening position. And

The three-dimensional display device of the present invention comprises: an image display means for displaying an image; a slit capable of changing an opening position; a lens for transmitting an image displayed by the image display means to the opening position; Another lens for outputting an image from the opening position to the observer side, a position detector for detecting the positions of the left and right eyes of the observer, a plurality of frame memories for recording images, and the position detector So that different images enter the left and right eyes based on the information from
A controller is provided for selecting the frame memory, transferring an image recorded in the frame memory to the image display means, and controlling the output direction of the image by selecting the opening position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The feature of the present invention is to equip a position detector, determine the position of the observer, select an image to be displayed based on the position information of the observer, and further output the image in the direction in which the observer is present. Set the opening position of the slit, further detect the position of the observer's eyes,
By setting the image and the opening position so that different images selected for the left and right eyes are input, the image is output only in the direction of the observer's position, so that there is no loss of brightness and stereoscopic vision is easy. It is.

First, the configuration of the present invention will be described. FIG. 1 shows a principle diagram of an image display device according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a plurality of display elements as display means for displaying an image, 2 denotes an electrically operated slit capable of changing an opening position, and 3 denotes an image of the display element 1 through an opening of the slit 2. A lens 4 for transmitting the image to a position is a lens for transmitting an image from the slit 2 to an observer, and the slit 2 is disposed between the lens 3 and the lens 4.

Reference numeral 5 denotes a plurality of frame memories (not shown) having a function as an image memory for recording a plurality of images, and selects the frame memory based on information from the position detector 7 to select the frame memory. A controller which transfers the image recorded in the image display device to the display element 1 and controls the output direction of the image by selecting the opening position of the slit 2, 6 is an image generator for generating an image, and 7 is an observation for observing the image. It is a position detector that detects the position of a person. Incidentally, the position detector 7 may detect the position of the eyes of the observer.

The operation of the embodiment constructed as described above will be described below. First, an image displayed on the display element 1 is output in a specific direction by the lens 3, the slit 2, and the lens 4. By determining the aperture position based on information from the position detector 7 and selecting a specific frame memory from a plurality of frame memories sent from the image generator 6 to the controller 5, a specific image can be specified only in a specific direction. Can be output.

FIG. 2 shows the principle of changing the direction of image output by selecting the opening position. From the image generator 6, n images captured from different directions within a specific time are sent to the controller 5. The controller 5 has n frame memories corresponding to the n images, and the transmitted images are sequentially stored in the n frame memories. When the first position is detected based on the information from the position detector 7, for example, FIG.
By selecting 1 and the opening position S1 of the first frame memory as shown in FIG. 2A, the data is output in the lower right direction on the paper of FIG. When the N-th position is detected based on the information from the position detector 7, it is output in the upper right direction on the paper of FIG. As described above, the image signal can be transmitted only in the direction of the observer based on the information from the position detector 7, so that the loss of brightness is reduced.

Next, the slit 2 will be described. For the slit 2, a liquid crystal display device driven by a matrix may be used, for example. When high speed is required, a ferroelectric liquid crystal may be used as a liquid crystal material. FIG. 3 shows the positions of the slits.

FIG. 3 (a) shows a slit in the vertical direction. Since the opening direction of the slit and the output direction of the image are orthogonal to the slit, the use of the slit in this direction allows the image to be moved horizontally to the observer. You can change the direction. Similarly, by using the slit of (b), it can be changed in the vertical direction, and by using the slit of (c), it can be changed in the oblique direction.

FIG. 4 shows the positional relationship between the opening position and the observable position. In FIG. 4 (a), if the slit is in the right direction on the paper, the observer can observe the image when moving in the right direction on the paper. In FIG. 4B, if the slit is in the downward direction on the paper, the observer can observe the image when moving in the upward direction on the paper.

FIG. 5 shows information from the position detector 7 and selection of an image. When the position detector 7 outputs the position information equally divided into n in the horizontal direction, for example, when the position 3 is selected, the frame memory 3 is selected and output, and the slit 3 is selected to output the image. Output in a specific direction becomes possible.

If the information from the position detector 7 is a signal from two or more places, a frame memory and a slit corresponding to each are selected and displayed in a time series in conjunction with each other, so that a plurality of directions are displayed. Can be displayed.

The display speed is set to 1 in consideration of the flickering of the eyes.
/ 60 seconds or 1/30 seconds as the unit time,
In the case of the name, information of one selected frame memory may be displayed in a unit time cycle. When there are a plurality of observers, the number of selected frame memories may be displayed in time series within a unit time in accordance with information from the position detector.

The position detector may be constituted by a television camera and an image processing device, and the screen to be photographed may be divided into a plurality of sections, and the position of the subject may be specified and output in the divided sections.

Further, a section of the position detector is made to correspond to a plurality of frame memories, and information from the position detector is
A specific frame memory may be selected and output to the image display device, and the opening position of the slit may be specified based on information from the position detector.

Further, an image is displayed on the display element a specified number of times in a unit time, and if the number of frame memories selected in the unit time is smaller than the specified number, the image of the selected frame memory is displayed in a unit. It may be displayed a plurality of times during the time.

FIG. 6 is a view showing a three-dimensional display device for realizing an image display method with binocular parallax according to an embodiment of the present invention, in which a plurality of pieces of image information are stored in a frame memory and an image is observed. The position of the observer (or the position of the eye) to be detected is detected by the position detector, a specific frame memory and a specific slit are selected, and an image is displayed to display a stereoscopic image following the position of the observer. It is characterized by doing.

In FIG. 6, reference numeral 31 denotes an image display means comprising a plurality of display elements for displaying a plurality of images, 32 an electrically operated slit capable of changing a plurality of opening positions, and 33 an image display. Image of means 31 is slit 3
Reference numeral 34 denotes a lens for transmitting the image from the slit 32 to the observer. The slit 32 is disposed between the lens 33 and the lens 34.

Reference numeral 35 denotes a plurality of frame memories (not shown).
The frame memory is selected based on the information from the position detector 37, the image recorded in the frame memory is transferred to the image display means 31, and the opening position of the slit 32 is selected to output the image. Controller for controlling direction, 3
6 is an image generator for generating an image, and 37 is a position detector for detecting the positions of the left and right eyes of the observer who observes the image.

The operation of the present embodiment configured as described above will be described below. First, by adjusting the positional relationship between the shape of the lens 33 and the slit 32, the direction in which the display image is output can be narrowed.

At the observer's position, binocular parallax becomes possible by selecting an opening position such that images from two specific directions enter the left and right eyes independently of each other.
In addition, a plurality of left and right images are stored in a frame memory, and a signal from the position detector 37 is used to select one set of left and right images and one set of opening positions, thereby changing the viewpoint of the observer. It is possible to output a binocular parallax image in a different direction following the direction.

Incidentally, the position detector may be constituted by a television camera and an image processing device.

[0027]

As described above, according to the present invention, by detecting position information and selecting a frame memory and an opening position,
It is possible to output an image in a different direction only at the position of the observer while reducing the loss of brightness.

[Brief description of the drawings]

FIG. 1 is a diagram showing a basic configuration of an image display device according to an embodiment of the present invention.

FIG. 2 shows the same operation.

FIGS. 3A to 3C are views showing the same slit shape.

FIGS. 4A and 4B are diagrams showing selection of an observation position.

FIGS. 5A and 5B are diagrams showing selection of a slit and a memory frame.

FIG. 6 is a diagram showing a basic configuration of a stereoscopic display device according to an embodiment of the present invention.

FIG. 7 shows a conventional example.

[Explanation of symbols]

 Reference Signs List 1 display element 2 slit 3 lens 4 lens 5 controller 6 image generator 7 position detector

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Takimoto 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. 72) Inventor Kazunori Komori 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd.

Claims (6)

[Claims] 1. A display means for displaying an image, a slit capable of changing an opening position, a lens for transmitting an image displayed by the display means to the opening position, and an image from the opening position to an observer. Other lens to output to the side,
A position detector for detecting the position of the observer, a plurality of frame memories for recording an image, and the frame memory is selected based on information from the position detector and is recorded on the display unit in the frame memory. An image display device comprising: a controller that transfers an image and controls an output direction of the image by selecting an opening position. 2. A position detector comprising a television camera and an image processing device, wherein a screen to be photographed is divided into a plurality of sections, and a position of a subject is specified and output in the divided sections. 2. The image display device according to 1. 3. A section of a position detector is associated with a plurality of frame memories, a specific frame memory is selected and output to a display means based on information from the position detector, and information from the position detector is selected. 2. The image display device according to claim 1, wherein the position of the opening of the slit is specified by the following. 4. A display means for displaying an image a specified number of times within a unit time, wherein if the number of frame memories selected within the unit time is less than the specified number, the image of the selected frame memory is displayed as a unit. 2. The image display device according to claim 1, wherein the image is displayed a plurality of times within a time period. 5. The liquid crystal display device according to claim 1, wherein said display means is a liquid crystal display element arranged in a matrix, and selects one of a plurality of pixels constituting a slit for transmitting light based on information from said position detector, and displays one or a plurality of slits. The image display device according to claim 1. 6. An image display means for displaying an image, a slit capable of changing an opening position, a lens for transmitting an image displayed by the image display means to the opening position, and an image from the opening position. Another lens for outputting to the observer side, a position detector for detecting the positions of the left and right eyes of the observer, a plurality of frame memories for recording images, and left and right based on information from the position detector. The frame memory is selected, the image recorded in the frame memory is transferred to the image display means, and the opening position is selected and the image output direction is selected so that a different image enters each eye. A stereoscopic display device comprising a controller for controlling.