TWI519882B - Multi-screen projecting system - Google Patents

Description

Multi-screen projection system

The present invention relates to a multi-screen projection system, particularly a system in which two or more image generating devices and a permeable screen are provided in one visual direction, and a multi-level visual effect is produced through projection images at different positions.

In projection technology, the general method is to connect an image source (such as a computer, video player) to a projector, which is processed by the imaging circuit and the optical component and projected onto a projection screen.

In the application of the conventional projector, a machine is usually used to project a picture with a projection screen; further, the image generated by the image source can be processed into a plurality of pictures that can be spliced by image processing, respectively. Projectors are projected onto a larger projection screen and finally present a larger size picture.

There is also a conventional technique for generating a visually stereoscopic effect using projection technology. Such techniques usually use two different projectors to project two superimposed images of different viewing angles on one projection screen, and then use the surface structure of the projection screen. Reflecting the images of different viewing angles, the left and right images are presented in the eyes of the viewer, thus producing a stereoscopic visual effect.

The invention provides a multi-screen projection system, which comprises a plurality of image generating devices and a projection screen, thereby presenting a projection image different from the prior art, the main One of the objectives is to present different levels of display images in a visual direction through a plurality of opaque projection screens, each of which can be generated by image generating devices at different positions, so that the viewer can view the overlap from a specific direction. Several images can be seen in multiple images.

According to an embodiment, a multi-screen projection system includes two or more image generating devices, such as a projector or a display having a backlight, and two or more light transmissive positions may be provided at positions corresponding to the image generating devices. A projection screen for respectively displaying two or more images projected by the image generating device.

In the hardware setting, the positions of the projection screens are substantially along a visual direction, that is, a visual direction of a viewer, and adjacent projection screens have a spacing, and corresponding groups of image generating devices and projection screens are Set the locations to have the same or different distances.

In one embodiment, if the image generating devices are displays, the displays are disposed on one side of the plurality of projection screens and may be at an angle of nearly 45 degrees to each other to facilitate generating a projected image in the aforementioned visual direction.

Moreover, in order to allow viewers to view images that are reasonably superimposed, the brightness of the screens on these projection screens may be different according to the position of the viewer, so that the final superimposed image does not cause uneven illumination due to differences in projection positions. The problem.

In order to further understand the technology, method and effect of the present invention in order to achieve the intended purpose, reference should be made to the detailed description and drawings of the present invention. The drawings and the annexed drawings are intended to be illustrative and not to limit the invention.

10‧‧‧Video Player

12‧‧‧Image processing device

101‧‧‧First projection device

102‧‧‧Second projection device

103‧‧‧third projection device

107‧‧‧First projection screen

108‧‧‧Second projection screen

109‧‧‧ Third projection screen

121‧‧‧Image Distribution Unit

122‧‧‧Time synchronization unit

123‧‧‧Brightness adjustment unit

124‧‧‧Image Correction Unit

20‧‧‧ visual direction

201‧‧‧First projection device

202‧‧‧Second projection device

203‧‧‧First projection screen

204‧‧‧Second projection screen

40‧‧‧ visual direction

401‧‧‧First projection device

402‧‧‧Second projection device

403‧‧‧third projection device

407‧‧‧First projection screen

408‧‧‧second projection screen

409‧‧‧ third projection screen

41‧‧‧First projection direction

42‧‧‧second projection direction

43‧‧‧ Third projection direction

60‧‧‧ visual direction

601‧‧‧First display device

602‧‧‧Second display device

603‧‧‧ Third display device

607‧‧‧First projection screen

608‧‧‧Second projection screen

609‧‧‧ Third projection screen

1 is a schematic view showing an embodiment of a multi-screen projection system of the present invention; 2 is a schematic view showing a first embodiment of a multi-screen projection system according to the present invention; FIG. 3 is a schematic view showing a second embodiment of the present invention; FIG. 4 is a schematic view showing a second embodiment of the multi-screen projection system of the present invention; 2 is a schematic diagram of a system; FIG. 6 is a schematic view showing a third embodiment of the multi-screen projection system of the present invention.

The present invention describes a multi-screen projection system, one of the purposes of which is to see a superimposed image of a plurality of images presented by projection screens at different positions in one visual direction, and a floating projection technique is used to present a kind of image. It is different from the multi-level visual effects of the projection technology applied by the prior art.

For a related system device, reference may be made to the schematic diagram of an embodiment of the multi-screen projection system of the present invention shown in FIG.

The figure shows a video player 10, which is an image source, such as a video player, a computer device, a set top box, etc., which can generate multimedia content such as pictures and texts, which are generated by the video player 10. The dynamic or static picture can be edited to extract the picture to be displayed from different positions, and a plurality of images to be presented from different positions can be acquired by one image processing device 12, respectively, by being distributed by two or more image generating devices. The image includes processing of image distribution, time synchronization, and management of various projection devices, such as brightness adjustment, image correction, and the like.

According to an embodiment, the image processing device 12 outputs a video to a processing circuit before the respective image generating devices (101, 102, 103...), which may include performing an image distribution unit 121 for distributing the images to the plurality of image generating devices; the time synchronization unit 122 is It is used to synchronize the broadcast time between each image generating device, especially when broadcasting dynamic images, or switching between front and rear still images, all of which requires time synchronization.

The processing circuit may also include a brightness adjustment unit 123 that controls the brightness of each of the image generating devices (such as the brightness of the projection source, the brightness of the backlight), typically adjusted by considering the distance between the screens. Then, each image generating device is projected onto the screen. The image adjustment unit 124 of the upper screen adjustment.

In this example, the first projection device 101, the second projection device 102, and the third projection device 103 are respectively spaced apart by a certain distance, and are arranged corresponding to the respective projection screens. The displayed image is the first projection device 101 and the second projection device. 102 and the third projection device 103 are generated, and respectively correspondingly projected to the first projection screen 107, the second projection screen 108, and the third projection screen 109, including a static image and a dynamic image.

For example, a foreground and background image, originally in a flat image, is extracted from the foreground and background images by the above-described image distribution technique, and the foreground image is projected closer to each other by the multi-screen projection system of the present invention. On the projection screen of the viewer's position, and projecting the background image onto another projection screen that is closer to the viewer's position, a viewer with a depth of field is visually seen. In this case, the depth of field is the distance of the projection screen at different front and rear positions. One of the embodiments may refer to the schematic diagram of the first embodiment of the multi-screen projection system of the present invention shown in FIG. 2.

[First Embodiment]

2 shows two sets of projection devices and corresponding projection screens, and a first projection screen 203 and a second projection screen 204 are provided in the visual direction 20 of the viewer. The two have a distance, which can be adjusted according to actual needs. The material is a light transmissive gauze material, glass or plastic material, so that the viewer can see the screen projected as a background through the screen as a foreground projection in the visual direction.

In this example, the first projection device 201 and the second projection device 202 are fixed above the system, respectively projecting the image from the top to the bottom to the first projection screen 203 and the second projection screen 204, due to the angle relationship, the projection The screen should be corrected for the screen image as needed, such as trapezoidal or barrel correction.

The first projection device 201 projects the image onto the first projection screen 203, and the second projection device 202 projects the image onto the second projection screen 204. If the projected image is a motion image, the screens of the two projection devices 201, 202 should be time synchronized. Thereby, the images generated by the two image generating devices (such as a projector, a display, etc.) are projected onto the opaque screen, and multi-level visual effects are generated through the projected images at different positions.

3 is a system diagram showing the first embodiment, in particular, a perspective view of a viewing angle. The first projection screen 203 and the second projection screen 204 are disposed substantially along the visual direction 20, wherein the first projection device 201 and the first projection device 201 The second projection device 202 projects the screen from the top to the bottom to the first projection screen 203 and the second projection screen 204, respectively.

[Second embodiment]

Alternatively, each image generating device may be disposed above, such as the second embodiment of the multi-screen projection system of the present invention shown in FIG.

This example also has a plurality of projection screens in the visual direction 40, in this case three, including a first projection screen 407, a second projection screen 408 and a third projection screen 409, between adjacent light transmissive projection screens. There is a spacing, and a first projection device 401, a second projection device 402 and a third projection device 403 are provided under the system. The adjacent projection devices 401, 402, 403 also have a distance between them, which can compare the distance between the projection screens 407, 408, 409. . The distance between the devices described herein can be adjusted according to actual needs, and can be the same or different distances.

In this example, the three projection screens 407, 408, 409 respectively display the images projected by the image generating device, that is, the screens respectively generated by the projection devices 401, 402, and 403, but are not projected onto the corresponding positions in the corresponding positions, and even the distance between the devices may be The same or different. According to this example, the image generated by the first projection device 401 is projected to the third projection screen 409 via the first projection direction 41; the image generated by the second projection device 402 is projected to the first projection screen 407 via the second projection direction 42. The image generated by the third projection device 403 is projected onto the second projection screen 408 via the third projection direction 43. Finally, the viewer can see the superimposed image of the three screens respectively displayed along the visual direction 40. The distance and manner of projection can be adjusted by the actual set space and demand, and is not limited to the one shown in the figure.

It is worth mentioning that this example shows that the image generated by each image generating device can adjust the screen to be projected according to needs. This consideration can be arranged according to the brightness of the image, the farther away from the viewer, the darker the brightness of the image; or because each image is Generating the arrangement on the screen presented by the device; or adjusting the spacing, angle, and tilt angle of each device (eg Figure 6), or adjustment of the front or back projection. These are all ways in which a multi-screen projection system can be adjusted to produce different visual effects.

FIG. 5 is a schematic view showing the stereoscopic angle of the system of the second embodiment. The figure corresponds to the side view of FIG. 4, clearly showing that the image generated by the first projection device 401 is projected onto the third projection screen 409, which is a front projection; the second projection The image generated by the device 402 is projected onto the first projection screen 407, which is a rear projection. Obviously, the projection device should generate a different image from the front projection, such as the left and right sides of the image; the image generated by the third projection device 403 is projected to the second projection. On screen 408, this is also a rear projection. Let the viewer see the superimposed image of the three screens in the visual direction 40.

The image generating device in the projection system of the present invention can be a projector, or a display device, and a display having a backlight. For an embodiment, reference may be made to the third embodiment shown in FIG.

[Third embodiment]

The figure shows a first projection screen 607 having a tilt angle, a second projection screen 608, and a third projection screen 609. The first display device 601 and the second display device 602 are respectively disposed below. The three display devices 603, wherein the number will be adjusted as needed, but at least two multi-screen projection effects that are likely to produce a ghost.

The first display device 601, the second display device 602, and the third display device 603 of this example may be a display having a backlight, so that there is sufficient brightness to project the display screen to the first projection screen on the adjacent side. 607. The second projection screen 608 and the third projection screen 609. Similarly, adjacent projection screens should have the same or different spacing according to requirements, and the corresponding display device also has corresponding spacing, and the tilt angle of the screen can be at a angle of nearly 45 degrees, which reflects the image with better effect. To the eyes of the viewer. Thus, the viewer can see multiple levels of superimposed images of different screen displays in the visual direction 60. Moreover, in order to present a consistent display effect and to eliminate image brightness attenuation caused by a certain distance, the brightness of the screen projected to each screen can be adjusted according to the distance from the viewer, and the brightness is adjusted. The adjustment of the backlight includes the adjustment of the brightness of the image itself, and the effect of the difference in brightness between the screens is also adjusted. For example, the screen projected on the projection screen farthest from the viewer is relatively bright, and the nearest one is relatively the most dark.

Therefore, the multi-screen projection system disclosed in the disclosure of the present invention can produce a multi-layer or three-dimensional visual effect by superimposing a plurality of screens to form a floating projection effect.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

20‧‧‧ visual direction

201‧‧‧First projection device

202‧‧‧Second projection device

203‧‧‧First projection screen

204‧‧‧Second projection screen

Claims (8)

A multi-screen projection system comprising: two or more image generating devices; corresponding to two or more light transmissive projection screens disposed on the two or more image generating devices, respectively displaying the two or more a picture projected by the image generating device, wherein the position of the two or more projection screens is substantially along a visual direction, and the adjacent two or more projection screens have a spacing, and the image generating device corresponding to each group Having the same or different distances from the projection screen according to the set position; wherein the brightness of the screen projected by the two or more image generating devices on the corresponding projection screen is different according to the position from the visual direction, wherein The picture projected on the projection screen furthest from the visual direction is relatively brightest, while the nearest one is relatively darkest. The multi-screen projection system of claim 1, wherein the image generating device is a projector. The multi-screen projection system of claim 1, wherein the image generating device is a display device. The multi-screen projection system of claim 3, wherein the display device is a display having a backlight. The multi-screen projection system of claim 4, wherein the two or more displays are disposed on one side of the two or more projection screens and are at an angle of nearly 45 degrees to each other. The multi-screen projection system of claim 2, wherein the two or more image generating devices are uniformly disposed above or below the two or more projection screens. The multi-screen projection system of claim 1, wherein the screen brightness of each projection screen is adjusted by adjusting a distance between each image generating device and a corresponding projected projection screen. A multi-screen projection system as described in claim 1, wherein the projection The screen material is a light permeable yarn material, glass or plastic material.