JP3503925B2 - Multi-image display device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screen display technique and a stereoscopic image display technique applied to a multi-channel television, a display device for a video game, etc., and particularly to a plurality of observers using one display element. On the other hand, the present invention relates to a multi-image display device capable of simultaneously observing different plane images or stereoscopic images.

[0002]

2. Description of the Related Art A two-screen display device capable of simultaneously displaying two kinds of images on the same screen has been proposed (JP-A-9-46622). In this prior art,
First and second image output devices for outputting image information for the left and right observers, and vertically driven by image signals for the left and right observers from the first and second image output devices. A display body formed by alternately arranging aligned pixel groups in the lateral direction; and a lenticular lens arranged on the front surface of the display body so as to correspond to the left and right observer pixel groups, Different images are displayed on the left and right observer pixel groups. However, this 2
The screen display device does not have a remote controller that allows an observer to change only the display image that he or she is observing on the spot. You have to go up and change the display image. Further, in the above-mentioned conventional image display device, there is no description about a stereoscopic image, and two or more observers cannot stereoscopically view at the same time.

[0003]

DISCLOSURE OF THE INVENTION The present inventors have proposed an image display device provided with means for allowing a plurality of observers to observe different images using a single display element. There is. This image display device is composed of a liquid crystal display element 101 and a parallax barrier (slit array) 102, for example, as shown in FIG. 25. By inputting different image signals to the respective pixels 101A to 101D of the liquid crystal display element 101, A plurality of observers A to D are allowed to observe different plane images or stereoscopic images.

However, since the image display device described above does not have means for detecting the direction and position of the observer with respect to the liquid crystal display element 101, the image display device is required to change only the display image being observed. There was a problem in that the user had to specify his own viewing direction or viewing position.

The present invention has been made in view of the above circumstances, and a plurality of observers selectively controls an image in the direction in which each observer is observing (including switching between a two-dimensional image and a three-dimensional image). The purpose (problem) is to solve the above problems by making it possible.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 uses a remote control device, and an observer himself or herself with respect to the image display device for each direction by using the remote control device. The multi-image display device according to claim 1, wherein the viewing direction is automatically detected without specifying the viewing direction, and only the display image being viewed by the viewer can be selectively controlled. , An image display element for each direction that allows a plurality of observers to simultaneously observe different planar images or stereoscopic images on a single display, and the observer operates from the spot to transmit a signal and Of the remote control device for selectively controlling the display image being observed by the observer, and the image display element for each direction of the observer operating the remote control device. The remote controller of the viewing direction that
When detecting from the direction in which the roll device signal is emitted,
The display image from the signal of the remote control device
And an observation direction detecting means for detecting a signal for selecting .

According to a second aspect of the present invention, the remote control device is used, and when the remote control device is operated, the viewing direction is automatically set even if the viewer does not specify his own viewing direction with respect to the direction-specific image display element. Is detected so that only the display image observed by the observer can be selectively controlled, and the degree of freedom with respect to the observation position when there are a plurality of observers is increased so that each observer can change the observation position. A multi-image display device according to claim 2, wherein a good image can be observed without moving.
An image display element for each direction that allows a plurality of observers to simultaneously observe different two-dimensional images or three-dimensional images with one display, and the observer operates from the spot to transmit a signal and to the display image is observed with a remote control device for selectively controlling the viewing direction with respect to the direction-specific image display device of the viewer to manipulate the remote control device the remote control instrumentation
Is detected from the direction in which the
Select the display image from the signal of the remote control device
And a display direction changing means for changing the direction of the direction image displayed by the direction-specific image display element.

The invention according to claim 3 enables more accurate control of the display direction by recognizing the observation direction of each observer when there are a plurality of observers. Is to enable a good image to be observed. In the multi-image display device according to claim 1, in the multi-image display device according to claim 1 or 2, the image selection signal from the remote control device and the time Is provided with a memory device for storing the signal of the observation direction.

The invention according to claim 4 eliminates the trouble of handing over the remote control device among a plurality of observers when selecting an image, and realizes a smoother operating environment. An image display device according to claim 1 or 2 is characterized in that a plurality of remote control devices having different transmission and reception wavelengths and observation direction detecting means corresponding thereto are provided.

According to a fifth aspect of the invention, the display direction changing means according to the second aspect is realized with a simple and compact structure, and the multi-image display device according to the fifth aspect is the second aspect. In the multi-image display device, the image display device for each direction is composed of an image display device and a slit array, and the display direction changing means is provided with one of the slit array or the image display device of the image display device for each direction. It is characterized in that the direction of the direction image displayed by the direction-specific image display element is changed by moving the image in parallel and horizontally.

According to a sixth aspect of the present invention, the remote control device is used, and the observer does not have to specify his / her observation position (direction and distance) with respect to the direction-specific image display element when operating the remote control device. The observation position is automatically detected so that only the display image observed by the observer can be selectively controlled, whereby the limitation of the observation distance left in the invention of claim 2. The problem described in claim 1 is largely solved, and a good image can be observed at a desired observation distance. In the multi-image display device according to claim 6, one display body is different for a plurality of observers. An image display element for each direction capable of simultaneously observing a two-dimensional image or a three-dimensional image, and an observer operates from the spot to transmit a signal to selectively display the image being observed. The remote control device for controlling the remote control device and the viewing direction of the observer who operates the remote control device with respect to the image display element for each direction .
Detect from the direction in which the signal of the moat control device is emitted.
From the signal of the remote control device
Observation direction detecting hand for detecting a signal for selecting the display image
And a step of the observer using the observation direction detecting means.
An observation position detecting means for detecting an observation position with respect to the direction-specific image display element; and a display area changing means for changing an area in which each direction image displayed by the direction-specific image display element can be independently observed. Characterize.

According to a seventh aspect of the present invention, the observation region changing means according to the sixth aspect is realized with a simple and compact structure. In the multi-image display device according to the seventh aspect, the multi-image display device according to the sixth aspect is described. In the multi-image display device, the image display element for each direction is composed of an image display element and a slit array, and the display area changing means is provided with one of the slit array or the image display element of the image display element for each direction. On the other hand, by moving in the vertical direction and in the parallel and horizontal directions, the area in which each direction image displayed by the direction-specific image display element can be independently observed is changed.

The invention according to claim 8 makes it possible to control the display area more accurately by recognizing the observation position of each observer when there are a plurality of observers. Is to enable a good image to be observed. In the multi-image display device according to claim 8, in the multi-image display device according to claim 6, an image selection signal from the remote control device and observation at that time are performed. A memory device for storing the position signal is provided.

The invention according to claim 9 eliminates the trouble of handing over the remote control device among a plurality of observers when selecting an image, and realizes a smoother operating environment. An image display device according to claim 6 is characterized in that a plurality of remote control devices having different transmission and reception wavelengths and an observation position detecting means corresponding thereto are provided.

According to a tenth aspect of the present invention, the observation position of the observer is further specified so that a good image can be observed, compared with the ninth aspect. In the multi-image display device according to the sixth aspect, the observation position detection means detects a position apart from the position of the remote control device by a predetermined distance when viewed from the direction-specific image display element side as an observation position. To do.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the configuration, operation and action of the present invention will be described in detail with reference to the illustrated embodiments.

First, an embodiment for claim 1 is shown in FIG. FIG. 1 shows a configuration example of a multi-image display device. This multi-image display device allows a plurality of observers to simultaneously observe different plane images or stereoscopic images on a single display body. Directional image display element 1, remote control device 3 for the observer to operate from the spot to selectively control the display image being observed, and direction of the observer operating the remote control device 3. The image selection signal of the infrared light transmitted from the remote control device 3 is provided with the observation direction detection element 2 for detecting the observation direction with respect to the image display element 1. Then, the observation direction detecting element 2 detects the direction in which the infrared light is emitted and is modulated. It is configured to receive an image selection signal included in the outside light.

As shown in FIG. 2, the directional image display element 1 is a slit array (parallax barrier) in which a plurality of openings (slits) 5a are arranged on the front surface of a liquid crystal display element 4 which is one display. By arranging 5, the pixel groups that can be observed through the slits 5a are switched according to the change of the observation position. In the case of this embodiment, the slit array (parallax barrier) 5 is provided with slits 5a at a ratio of one to four columns of pixels 4A to 4D on the liquid crystal display element 4, and each pixel 4A.
By inputting different image signals to 4D,
In this direction, the pixels viewed through the slits 5a, that is, the images are different, and as shown in FIG.
The plane image can be observed at the observation position D, and the stereoscopic image can be observed at the observation positions of the observers E to G.

On the other hand, in the observation direction detecting element 2, as shown in FIG. 3, a slit 2e and a wavelength filter 2f are arranged in front of two photodiodes 2a and 2b arranged side by side, and incident on the two photodiodes 2a and 2b. The observation direction can be detected by obtaining the ratio of the intensities of the infrared light from the remote control device 3 thus obtained by the comparator 2c. At the same time, the image selection signal is detected from the sum signal of the two photodiodes 2a and 2b detected by the adder 2d. The observation direction signal and the image selection signal detected by the observation direction detection element 2 are the image display element 1 for each direction.
Is sent to a control circuit (not shown), and only the image in the display direction corresponding to the signal in the observation direction is switched to the image selected by the image selection signal.

Further, the remote control device 3 transmits an image selection signal by modulating infrared light, like the remote control device used in various electric products such as general televisions and air conditioners at present. Is configured as follows.

By configuring the multi-image display device as described above, it is possible to select only the image viewed by the observer operating the remote control device 3 among the plurality of observers as the target image. become.

By the way, in the area indicated by b in FIG. 4, when different images are displayed in four directions, an area (crosstalk area) in which a good image cannot be observed due to a mixture of adjacent images, etc. Shows this area b
A good image cannot be observed when the observer is located at. Therefore, in the invention of claim 2, the observation direction detecting element 2
The display direction of the image display element 1 for each direction is adjusted according to the signal of the observation direction obtained by the above so that the observer operating the remote control device 3 can observe a good image regardless of the position. FIG. 5 shows an embodiment for the present invention.
Shown in. In FIG. 5, the rotary stage 6 is arranged under the direction-specific image display element 1. However, the components other than the rotary stage 6 are the same as those of the first embodiment (FIG. 1).
Is the same as the case of 3). The rotating stage 6 is disposed below the direction-specific image display element 1, and is linked to the signal from the observation direction detection element 2 in a direction in which the observer can observe a good image. Operate so that the display direction of can be changed.

By doing so, for example, as shown in FIG. 6, when there are two observers A and B at the observation position and they want to observe different plane images, the image of the right observation region and the left are observed. When an observer A in the crosstalk region b where the images of the observation region of FIG. 2 are mixed and observed operates the remote control device 3 to select the target image, the direction-specific image display element 1 receives the signal and selects it. At the same time that the displayed image is displayed, the rotary stage 6 moves to be arranged as shown in FIG. 7, and each of the viewers A and B can observe a good image.

In the case of this example, it is sufficient to control the rotating operation of the rotary stage 6 to a position where an observer who operates the remote control device 3 can observe a good image. 8 is located at the position shown in FIG. 8, if the same control is performed, the crosstalk region b may come to the position of the observer B as shown in FIG. Therefore, such control is not sufficient.

Therefore, in the invention of claim 3, when a certain observer operates this at another observation position before operating the remote control device 3, the operation information is sequentially stored in the memory. The display direction control signal is processed by combining these pieces of information with the information on the observation direction detected by the observation direction detection element 2 when the observer operates the remote control device 3. An example of this is as follows:
Assuming the case of being limited to human observers, there is a control signal processing algorithm as shown in the flowchart of FIG.
Actually, this signal processing is performed by a control circuit (arithmetic processing unit (CPU) or memory device (ROM, RAM), not shown) arranged between the observation direction detection element 2, the image display device 1 for each direction and the rotary stage 6. The signal processing circuit, the drive control electric circuit of each part, and the like) are used.
With such a configuration, when the observer is arranged as shown in FIG. 6, the display direction is controlled as shown in FIG. 7, and
In the case of the arrangement of the observer as shown in FIG. 8 or FIG.
By controlling the display direction as described above, it becomes possible to control the display direction so that two observers can simultaneously observe a good image.

Further, according to the invention of claim 4, by providing each observer with a remote control device, the observation direction can be detected without the troublesome work of handing the remote control device between the observers. The display direction can be controlled and the display image can be selected. Here, as in the above-described embodiment, an embodiment in the case where there are two observers is shown in FIG. In the multi-image display device shown in FIG. 12, two observation direction detection elements 2-1 and 2-2 and remote controllers 3-1 and 3 are provided.
-2 and two prepared observation direction detection elements 2 are provided.
The configurations of -1, 2-2 are similar to those of FIG. 3, but different wavelength filters 2f are used so as to obtain different reception wavelengths, and accordingly, the remote control device 3-
The transmission wavelengths of 1 and 3-2 are also adjusted to the reception wavelengths of the observation direction detection elements 2-1 and 2-2 corresponding to the transmission wavelengths. By doing so, the mutual remote control devices 3
The operation information transmitted from -1, 3-2 is detected without interference, and the control signal processing as shown in FIG. 10 of the above embodiment becomes possible.

By the way, in the embodiment shown in FIG.
Although the rotary stage 6 is used for the control of the display direction, if the invention of claim 5 described below is used, the control of the display direction can be performed without using such a large device. An embodiment for this is shown in FIGS. 13 and 14. 13 and 14 are diagrams showing a configuration example of the image display device for each direction, and the basic configuration of the image display device 1 for each direction is the same as that of FIG. 2, but in this embodiment, a slit array is formed by a driving device not shown. The (parallax barrier) 5 can be moved in the direction shown by the arrow. With this configuration, for example, by moving the slit array 5 from the state of FIG. 13 to the state of FIG. 14 and moving the position of the slit (opening) 5a of the slit array 5 to the left, The direction can be moved to the left side in the figure. As a method of driving the slit array 5, it is effective to drive the slit array 5 by a normal motor through a gear or the like, or an ultrasonic motor or the like for more precise control.

The above description has been centered on the case where an observer observes a two-dimensional image, but as described above, the direction-specific image display element 1 used in the multi-image display device of the present invention displays a stereoscopic image, and further, It is also possible to simultaneously display a stereoscopic image and a planar image to different observers. For example, in FIG.
When three observers are in the observation positions of E, C, and D in 3D, respectively, a stereoscopic image is displayed for the observer of E, and C and D.
It is possible to allow different observers to observe different two-dimensional images. However, in order to form such a state, it is necessary to limit the observation position. With respect to this problem, it is possible to correct the deviation of the display position with respect to the horizontal direction by using the method of detecting the viewing direction and controlling the display direction with respect to the viewing direction as in the invention of claim 2. However, when the stereoscopic display is included, it is necessary to control the observation distance, and this method alone is insufficient. For example, when there are two observers at the position shown in FIG. 15 and one observes a stereoscopic image and the other observes a planar image, it is not enough to change the display direction. It is possible.

Therefore, in the invention of claim 6, the position of the observer is detected, and the display direction control and crosstalk node (point M in FIG. 15) and the direction-specific image display element 1 are provided.
This problem was solved by controlling the distance of. An example of this will be described below.

FIG. 16 is a schematic perspective view of a multi-image display device showing an embodiment of claim 6. First, for one remote control device 3, two observations constructed in the same manner as in FIG. Prepare the direction detection elements 2-1 and 2-2,
As shown in FIG. 16, they are arranged on the image display element 1 for each direction with a predetermined interval. By doing so, the position (direction and distance) of the remote control device 3 can be obtained from the directions of the remote control device 3 obtained by the respective observation direction detection elements 2-1 and 2-2 by the triangulation method. .

As a means for changing the display area, it is also possible to attach an XY stage for parallel translation in the front, rear, left, and right directions to the direction-dependent image display element 1 provided with the rotary stage 6 as shown in FIG. However, in this method, the device becomes large-scale and the installation space must be wide. Therefore, based on the invention of claim 7, in the directional image display element 1 having the same configuration as in FIG. As shown in FIG. 17, the display area is controlled so that the slit array (parallax barrier) 5 can be controlled to move forward, backward, leftward and rightward (directions indicated by arrows in the drawing) with respect to the paper surface. Thus, in the case of FIG. 15, the slit array 5 of the direction-specific image display element 1 shown in FIG. 17 is moved in the upper right direction on the paper surface to bring the state of FIG. It becomes possible to make such a display area. Here, in FIG.
The same planar image is displayed in the two display areas on the right side of 5. Further, if parallax images are displayed in the two areas on the right side and are displayed as shown in FIG. 20, the two observers A and B can observe different stereoscopic images.

In the above invention as well, similar to the problem described in the third embodiment, inconvenience occurs when the display area is controlled using the observation position information of only one observer. For example, from the state of FIG. 15 where the control is required as shown in FIG. 19, the display area may be set as shown in FIG. 21 because only the information on the observation position of the observer A is known.

Therefore, according to the invention of claim 8, when a certain observer operates this at another observation position before operating the remote control device 3, the operation information is stored in the memory of the above-mentioned control electric circuit. The information is sequentially stored in the above, and the control signal of the display area is processed by combining these information and the information when the observer operates the remote control device 3. As an example for this, assuming a case where the number of viewers is limited to 2 as in the above example, there is a control signal processing algorithm as shown in the flowchart of FIG. By doing so, in the case of FIG.
It is possible to control the display area where the human observers A and B can simultaneously observe a good image.

Further, according to the invention of claim 9, by providing each observer with a remote control device, it is possible to detect each observation position without the troublesome work of handing the remote control device between the observers. The display area can be controlled and the display image can be selected. Here, similar to the above-described embodiment, an embodiment in the case where there are two observers is shown in FIG. In the multi-image display device shown in FIG. 23, four observation direction detection elements 2-1 and 2-2 are arranged on the image display element for each direction 1 at predetermined intervals.
2, 2-3, 2-4 are arranged and two remote control devices 3-1 and 3-2 are prepared. Four prepared observation direction detection elements 2-1, 2-2, 2-3,
The basic configuration of 2-4 is the same as that of FIG. 3, but two sets of a set of observation direction detection elements 2-1 and 2-3 and a set of observation direction detection elements 2-2 and 2-4 are provided. These two sets are configured by using different wavelength filters having different reception wavelengths, and accordingly, the transmission wavelengths of the two remote control devices 3-1 and 3-2 also correspond to the respective observation directions. It is set to the reception wavelength of the detection element. By doing so, the mutual remote control devices 3-
The operation information transmitted from 1 and 3-2 is detected by the corresponding set of observation direction detecting elements without interference, and the processing as in the embodiment shown in FIG. 22 described above becomes possible.

By the way, as can be seen from FIG. 19 or 20, when observing a stereoscopic image, it is necessary to detect the position of the head of the observer as accurately as possible. It becomes impossible to observe a good stereoscopic image with both eyes positioned at. Normally, the remote control device 3 is operated in one of the hands of the observer toward the direction of the image display element according to the holding direction as shown in FIG. Therefore, in the conventional method in which the position of the remote control device 3 (actually the position of the light emitting source 3a) is used as the observation position, an error occurs in the observation position by the amount indicated by the correction distance in the figure.

Therefore, as means for more accurately and simply obtaining the position of the observer's head, in the invention of claim 10, the detected position of the remote control device 3 (of the light emitting source 3a) is corrected by a predetermined correction distance. The position added with was set as the observation position. For example, if the remote control device 3 is operated with the elbow bent slightly as shown in FIG. 24, the correction distance may be set to about 50 cm. As a result, the observation position of the observer is specified, and the stereoscopic image can be better observed.

[0037]

As described above, in the multi-image display device according to the first aspect, it is possible to allow a plurality of observers to simultaneously observe different plane images or stereoscopic images on a single display. Another image display element, a remote control device for an observer to operate from the spot to transmit a signal to selectively control the display image being observed, and the observer operating the remote control device the observation direction with respect to the direction-specific image display device remote
Detected from the direction in which the signal from the remote control device is emitted
From the signal of the remote control device
Since the observation direction detecting means for detecting the signal for selecting the display image is provided, it is possible to automatically operate the remote control device even if the observer does not specify his own observation direction with respect to the image display device for each direction when operating the remote control device. Thus, the observation direction is detected, and only the display image observed by the observer can be selectively controlled.

According to another aspect of the multi-image display device of the present invention, an image display element for each direction that allows a plurality of observers to simultaneously observe different planar images or stereoscopic images with one display body, and the observer. Operating from the spot
Remote control device and, said remote control device a viewing direction with respect to the direction-specific image display device of the viewer to manipulate the remote control device for selectively controlling a display image transmitted the signal are my observations
Is detected from the direction in which the signal of
Select the display image from the signal of the control device
By providing the observation direction detecting means for detecting a signal and the display direction changing means for changing the direction of the direction image displayed by the direction-specific image display element, the observer can change the direction when operating the remote control device. Even if the user does not specify his own viewing direction with respect to another image display element, the viewing direction is automatically detected and only the display image being viewed by the viewer can be selectively controlled, and a plurality of viewers The degree of freedom with respect to the observing position in the case of presence of an object is increased, and each observer can observe a good image without moving the observing position.

In the multi-image display device according to a third aspect, in the multi-image display device according to the first or second aspect, the image selection signal from the remote control device and the signal of the viewing direction at that time are stored. By including the memory device, it becomes possible to control the display direction more accurately by recognizing the viewing direction of each observer when there are multiple observers You will be able to observe various images.

In the multi-image display device according to claim 4, the multi-image display device according to claim 1 or 2 is provided with a plurality of remote control devices having different transmission and reception wavelengths and corresponding observation direction detecting means. , The trouble of handing the remote control device among a plurality of observers when selecting an image is eliminated, and a smoother operating environment is realized.

In the multi-image display device according to a fifth aspect, in the multi-image display device according to the second aspect, the image display element for each direction is composed of an image display element and a slit array, and the display direction changing means includes the By moving either the slit array or the image display element of the direction-specific image display element in the direction parallel and horizontal to the other, by changing the direction of the direction image displayed by the direction-specific image display element, The display direction changing means according to claim 2 is realized with a simple and compact structure.

According to another aspect of the multi-image display device of the present invention, an image display element for each direction that allows a plurality of observers to simultaneously observe different planar images or stereoscopic images with one display body, and the observer. Operating from the spot
Remote control device and, said remote control device a viewing direction with respect to the direction-specific image display device of the viewer to manipulate the remote control device for selectively controlling a display image transmitted the signal are my observations
Is detected from the direction in which the signal of
Select the display image from the signal of the control device
Observation direction detecting means for detecting a signal, and the observation direction detecting hand
A step to attach the image display element for each direction of the observer.
Of the remote control device by providing the observation position detecting means for detecting the observation position and the display area changing means for changing the area in which each direction image displayed by the direction-specific image display element can be independently observed. At the time of operation, even if the observer does not specify his own observation position (direction and distance) with respect to the image display device for each direction, the observation position is automatically detected and only the display image observed by the observer is selected. Control becomes possible. As a result, the problem of the limitation of the observation distance left in the invention of claim 2 is solved,
A good image can be observed at a desired observation distance.

A multi-image display device according to a seventh aspect is the multi-image display device according to the sixth aspect, wherein the image display element for each direction is constituted by an image display element and a slit array, and the display area changing means is the By moving either the slit array of the image display element for each direction or the image display element in the vertical direction and the parallel and horizontal direction with respect to the other, each direction image displayed by the image display element for each direction is independently displayed. By changing the observable region, the observing region changing means according to the sixth aspect can be realized with a simple and compact structure.

In the multi-image display device according to claim 8, in the multi-image display device according to claim 6, a memory for storing an image selection signal from the remote control device and a signal of an observation position at that time. By providing a device, when there are multiple observers, by recognizing the observation position of each observer, it becomes possible to control the display area more accurately, and each observer You will be able to observe the image.

In the multi-image display device according to a ninth aspect, the multi-image display device according to the sixth aspect is provided with a plurality of remote control devices having different transmission / reception wavelengths and corresponding observation position detecting means. At the time of selection, the trouble of handing the remote control device among a plurality of observers is eliminated, and a smoother operating environment is realized.

In the multi-image display device according to a tenth aspect, in the multi-image display device according to the sixth aspect, the observation position detecting means is located at a predetermined position from the position of the remote control device when viewed from the direction-specific image display element side. The method according to claim 9, wherein a position separated by a distance is detected as an observation position.
The observation position of the observer is further specified, and a good image can be observed.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention and is a perspective view showing a schematic configuration of a multi-image display device.

FIG. 2 is a cross-sectional view schematically showing an example of a main configuration of an image display element for each direction of the multi-image display device shown in FIG.

FIG. 3 is a schematic configuration diagram showing an example of an observation direction detection element of the multi-image display device shown in FIG.

FIG. 4 is a diagram showing an example of display directions and display areas of image display elements for different directions in a multi-image display device of the present invention, and observation positions of a plurality of observers.

FIG. 5 is a view showing another embodiment of the present invention and is a plan view showing a schematic configuration of a multi-image display device.

FIG. 6 is a diagram showing an example of a display direction and a display area of the image display element for each direction and a viewing position of two viewers in the multi-image display device of the present invention.

FIG. 7 is a diagram showing another example of the display direction and display area of the image display device for each direction and the observation position of two observers in the multi-image display device of the present invention.

FIG. 8 is a diagram showing another example of the display direction and the display area of the direction-specific image display element in the multi-image display device of the present invention and the observation positions of two observers.

FIG. 9 is a diagram showing another example of the display direction and the display area of the direction-specific image display element in the multi-image display device of the present invention, and the observation positions of two observers.

FIG. 10 is a flowchart showing an example of an algorithm of control signal processing when controlling the display direction in the multi-image display device of the present invention.

FIG. 11 is a diagram showing another example of the display direction and the display area of the image display element for each direction in the multi-image display device of the present invention and the observation positions of two observers.

FIG. 12 is a diagram showing still another embodiment of the present invention and is a perspective view showing a schematic configuration of a multi-image display device.

13 is a cross-sectional view schematically showing an example of a main configuration and an operation of a direction-specific image display element of the multi-image display device shown in FIG.

FIG. 14 is a cross-sectional view schematically showing a state in which the slit array of the image display element for each direction shown in FIG. 13 has been moved.

FIG. 15 is a diagram showing another example of the display direction and the display area of the image display element for each direction and the observation positions of two observers in the multi-image display device of the present invention.

FIG. 16 is a view showing still another embodiment of the present invention and is a perspective view showing a schematic configuration of a multi-image display device.

FIG. 17 is a cross-sectional view schematically showing an example of the main configuration and operation of the image display element for each direction of the multi-image display device shown in FIG.

FIG. 18 is a sectional view schematically showing a state in which the slit array of the image display element for each direction shown in FIG. 17 has been moved.

FIG. 19 is a diagram showing another example of the display direction and the display area of the image display element for each direction in the multi-image display device of the present invention and the observation positions of two observers.

FIG. 20 is a diagram showing another example of the display direction and display area of the image display device for each direction and the observation positions of two observers in the multi-image display device of the present invention.

FIG. 21 is a diagram showing another example of the display directions and display areas of the image display elements for different directions and the observation positions of two observers in the multi-image display device of the present invention.

FIG. 22 is a flowchart showing an example of an algorithm of control signal processing when controlling the display area in the multi-image display device of the present invention.

FIG. 23 is a diagram showing still another embodiment of the present invention and is a perspective view showing a schematic configuration of a multi-image display device.

FIG. 24 is an explanatory diagram of an observation position correction method when there is an error between the position of the observer and the position of the remote control device.

FIG. 25 is an explanatory diagram of a configuration and operation of a conventional multi-image display device.

[Explanation of symbols]

1: Image display elements by direction 2, 2-1, 2-2, 2-3, 2-4: Observation direction detection elements 2a, 2b: Photodiode 2c: Comparator 2d: Adder 2e: Slit 2f: Wavelength filter 3, 3-1 and 3-2: Remote control device 3a: Light emission source 4: Liquid crystal display elements 4A, 4B, 4C, 4D: Pixel 5: Slit array (parallax barrier) 5a: Opening (slit) 6: Rotation Stage (variable display direction)

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04N 13/04

Claims (10)

(57) [Claims] 1. An image display element for each direction that allows a plurality of observers to simultaneously observe different plane images or stereoscopic images on a single display body, and a signal that the observer operates from the spot. And a remote control device for selectively controlling the display image that is being observed,
The observation direction with respect to the direction-specific image display device of the viewer to manipulate the remote control device Rimotoko
When detected from the direction in which the control device signal is emitted
Both of the above are displayed from the signal of the remote control device.
A multi-image display device, comprising: an observation direction detecting means for detecting a signal for selecting an image. 2. An image display element for each direction that allows a plurality of observers to simultaneously observe different plane images or stereoscopic images on a single display body, and a signal that the observer operates from the spot. And a remote control device for selectively controlling the display image that is being observed,
The observation direction with respect to the direction-specific image display device of the viewer to manipulate the remote control device Rimotoko
When detected from the direction in which the control device signal is emitted
Both of the above are displayed from the signal of the remote control device.
A multi-image display device comprising: an observation direction detecting means for detecting a signal for selecting an image; and a display direction changing means for changing the direction of the direction image displayed by the direction-specific image display element. 3. The multi-image display device according to claim 1, further comprising a memory device for storing an image selection signal from the remote control device and a signal of an observation direction at that time. Characteristic multi-image display device. 4. The multi-image display device according to claim 1, further comprising a plurality of remote control devices having different transmission / reception wavelengths and an observation direction detecting means corresponding thereto. 5. The multi-image display device according to claim 2, wherein the image display element for each direction is composed of an image display element and a slit array, and the display direction changing means includes:
It is possible to change the direction of the directional image displayed by the directional image display element by moving either the slit array of the directional image display element or the image display element in a direction parallel and horizontal to the other. Characteristic multi-image display device. 6. An image display element for each direction that allows a plurality of observers to simultaneously observe different planar images or stereoscopic images on a single display body, and a signal that the observer operates from the spot. And a remote control device for selectively controlling the display image that is being observed,
The observation direction with respect to the direction-specific image display device of the viewer to manipulate the remote control device Rimotoko
When detected from the direction in which the control device signal is emitted
Both of the above are displayed from the signal of the remote control device.
An observation direction detecting means for detecting a signal for selecting an image;
The direction-specific image of the observer using the observation direction detection means
It is characterized by comprising an observation position detecting means for detecting an observation position with respect to the display element, and a display area changing means for changing an area in which each direction image displayed by the direction-specific image display element can be independently observed. Multi-image display device. 7. The multi-image display device according to claim 6, wherein the direction-specific image display element is composed of an image display element and a slit array, and the display area changing means includes:
By moving either the slit array or the image display element of the direction-by-direction image display element in the vertical direction and the parallel and horizontal direction with respect to the other, each direction image displayed by the direction-by-direction image display element is independent. A multi-image display device characterized by changing the area that can be observed with. 8. The multi-image display device according to claim 6, further comprising a memory device for storing an image selection signal from the remote control device and an observation position signal at that time. Multi-image display device. 9. The multi-image display device according to claim 6, comprising a plurality of remote control devices having different transmission and reception wavelengths and an observation position detecting means corresponding thereto. 10. The multi-image display device according to claim 6, wherein the observation position detecting means is an observation position at a position separated from the position of the remote control device by a predetermined distance when viewed from the direction-specific image display element side. A multi-image display device characterized by being detected as.