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Patent Issued for Miniaturized Imaging Module, 3D Display System Using the Same and Image Arrangement Method

May 27, 2014



By a News Reporter-Staff News Editor at Journal of Technology -- Industrial Technology Research Institute (Hsinchu, TW) has been issued patent number 8723929, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventors are Chen, Wu-Li (Changhua, TW); Tsai, Chao-Hsu (Hsinchu, TW); Cheng, Shu-Chuan (Taichung, TW); Wu, Chang-Shuo (Xinzhuang, TW).

This patent was filed on July 22, 2010 and was published online on May 13, 2014.

From the background information supplied by the inventors, news correspondents obtained the following quote: "The disclosure relates in general to a miniaturized imaging module and a 3D display system, and more particularly to a multi-viewing zone miniaturized imaging module capable of improving 3D image quality, a multi-viewing zone 3D display system using the same and an image arrangement method thereof.

"The 3D image display which comes after the flat display is getting more and more popular. Currently, the resolution level of the flat display is still relatively low. In the development of the spatial multiplex 3D display system, the resolution distributed to each viewing zone is small, so the image quality of the 3D display system is thus restricted. Of the current methods for providing a high-resolution spatial multiplex 3D display system, a practical method is to increase the resolution of the 3D display system by way of projection. Currently, there are many different projection methods of the 3D display system. For example, a structure of 3D display system as indicated in FIG. 1 is disclosed in United States Patent Number US 2009/0190096.

"In FIG. 1, the 3D display system (that is, a miniaturized imaging module array 130) includes a plurality of miniaturized imaging modules 131.about.134 and a viewing zone modulating screen 110. Each miniaturized imaging module projects a segmented image of the image composed of a plurality of images having different view-angles. As indicated in FIG. 1, the miniaturized imaging modules 131.about.134 respectively project corresponding segmented images 121.about.124 onto four regions of the viewing zone modulating screen 110, wherein each segmented image is composed of a plurality of images having different view-angles, and the four segmented images 121.about.124 can construct a complete image 120. On the part of the viewing zone modulating screen 110, the viewing zone modulating screen 110 has a plurality of image regions for correspondingly receiving the segmented images 121.about.124 to form a plurality of images having different view-angles, wherein every two images having different view-angles construct a 3D display image.

"According to the above projection method, the segmented images 121.about.124 projected on the four regions of the viewing zone modulating screen 110 are overlapped. As indicated in FIG. 1, the segmented image 121 overlaps neighboring segmented images 122.about.124 at different positions. When the 3D display system is moved, special image processing such as the adjustment and calibration of display brightness and image color need to be performed on the overlapped regions of neighboring images needs. In addition to being subjected to a higher precision in the alignment of position, if the seam of the image overlapped regions cannot be eliminated, 3D image may be easily segmented at the boundary seam, and the stereoscopic sense and representation of depth of the 3D image may easily be damaged. In response to the occurrence of image overlapped regions, brightness adjustment and color calibration are required, and the higher precision is required in the alignment of positions.

"Moreover, the entire miniaturized imaging module array 130 being a single system is large in size, and system adjustment becomes more complicated and more difficult. When the terms of application change (for example, the entire system needs to display an even larger screen or perform an irregular splicing), the miniaturized imaging module array 130 must be accompanied with image processing, making the system more complicated. The impact of optical distortion caused by the miniaturized imaging module due to the optical tolerance in projection cannot be eliminated, largely increasing crosstalk during projection."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventors' summary information for this patent: "The disclosure is directed to a multi-viewing zone miniaturized imaging module capable of improving 3D image quality, a multi-viewing zone 3D display system using the same and an image arrangement method thereof. Each of the miniaturized imaging modules is an independent projection unit, and the rims of the display regions of the miniaturized imaging modules are eliminated through the design of a special mechanism, so that the deterioration in the stereoscopic sense caused by the frame effect generated during the formation of a large-sized 3D display system is reduced.

"According to a first aspect of the present disclosure, a 3D display system is provided. The 3D display system includes a plurality of multi-viewing zone miniaturized imaging modules and an image output module. The image output module is for editing, adjusting and distributing a multi-viewing zone image to the multi-viewing zone miniaturized imaging modules for display. Each multi-viewing zone miniaturized imaging module includes a housing, a projection unit and a viewing zone modulating screen. The projection unit and the viewing zone modulating screen are respectively disposed on two opposite sides inside the housing. In each multi-viewing zone miniaturized imaging module, the projection unit projects an image onto respective viewing zone modulating screen, and forms a plurality of viewing zones in front of the viewing zone modulating screen, wherein the image is a segmented image of an image composed of a plurality of images having different view-angles. All the viewing zone modulating screens of the multi-viewing zone miniaturized imaging module constitute a display screen.

"According to a second aspect of the present disclosure, a miniaturized imaging module is provided. The miniaturized imaging module includes a housing, a projection unit and a viewing zone modulating screen. The projection unit and the viewing zone modulating screen are respectively disposed on two opposite sides inside the housing, and a correspondence relationship between the projection unit and the viewing zone modulating screen can be modulated. Wherein, the projection unit projects a to-be-displayed multi-viewing zone image onto the viewing zone modulating screen, the viewing zone modulating screen distributes the projection multi-viewing zone image to different regions in the space, and two images belonging to different spaces constitute a 3D display image.

"According to a third aspect of the present disclosure, an image arrangement method of reducing the crosstalk of a 3D image is provided. The method includes the following steps:

"providing a miniaturized imaging module having a viewing zone modulating screen;

"providing a test pattern for defining the relationship between the actual positions of a plurality of sub-pixels generated from the projection by a projection unit and the ideal positions of a plurality of sub-pixels; and

"defining a pixel by re-arranging and re-grouping the actual positions of the sub-pixels closest to the ideal positions of the sub-pixels based on the relationship, obtained from the test pattern, between the actual positions and the ideal positions of the sub-pixels.

"The disclosure will become apparent from the following detailed description of the preferred but non-limiting embodiments. The following description is made with reference to the accompanying drawings."

For the URL and additional information on this patent, see: Chen, Wu-Li; Tsai, Chao-Hsu; Cheng, Shu-Chuan; Wu, Chang-Shuo. Miniaturized Imaging Module, 3D Display System Using the Same and Image Arrangement Method. U.S. Patent Number 8723929, filed July 22, 2010, and published online on May 13, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=61&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=3014&f=G&l=50&co1=AND&d=PTXT&s1=20140513.PD.&OS=ISD/20140513&RS=ISD/20140513

Keywords for this news article include: Industrial Technology Research Institute.

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Source: Journal of Technology


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