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Patent Application Titled "3d/2d Multi-Primary Color Image Device and Method for Controlling the Same" Published Online

July 1, 2014



By a News Reporter-Staff News Editor at China Weekly News -- According to news reporting originating from Washington, D.C., by VerticalNews journalists, a patent application by the inventors PHAN, Gia Chuong (Hong Kong, CN); WONG, Hon Wah (Hong Kong, CN), filed on February 14, 2014, was made available online on June 19, 2014.

The assignee for this patent application is Vp Assets Limited.

Reporters obtained the following quote from the background information supplied by the inventors: "The invention relates to an image device, and particularly to a three-dimensional (3D)/two-dimensional (2D) multi-primary color image device which can display a 3D image, a 2D image and a mixed 2D/3D image, and a method for controlling the same.

"Display devices capable of displaying 3D images have been developed. 3D image display systems that have been studied so far can be classified into a type which uses glasses and a type which is glass free. Wearing glasses may have negative impact on users watching 3D contents. The more user friendly glass free 3D image display device includes an optical unit such as a parallax barrier, a lenticular lens or a second LCD which is used to direct two slightly different images, one to the left eye and one to the right eye for forming a 3D image.

"Recently have active studies also been made to permit a 3D image display device to display a 2D image. The conventional approach is to make the aforementioned images for the left eye and for the right eye match with each other and display the same image. Referring to FIG. 1, it shows a conventional 3D display device. The conventional 3D display device 10 includes a plurality of RGB pixel groups 11 for the left eye and a plurality of RGB pixel groups 12 for the right eye. For example, the RGB pixel group 11 includes a red dot (R1) 111, a green dot (G1) 112 and a blue dot (B1) 113 for the left eye, and the RGB pixel group 12 includes a red dot (R2) 121, a green dot (G2) 122 and a blue dot (B2) 123 for the right eye. In this case, the same information should be displayed over two pixels, thus reducing the resolution to a half.

"U.S. Pat. No. 7,705,844 teaches a method to arrange two RGB pixels in a square instead of 1 RGB stripe pixel so that double density can be obtain in the horizontal direction, thus compensating the loss of resolution by dividing a left image and a right image. The downside is that the gate line number increases by three, thus reducing dramatically the pixel clock and TFT LCD pixels do not have enough time to be fully charged, specially for amorphous LCD display.

"U.S. Pat. No. 7,050,020 teaches a method to use 2 lenticular lenses to maintain the full resolution in 2D display mode in shifting one lenticular lens against another lenticular lens by half a lens pitch. The problem is still the complicated construction of the display with moving lenticular lenses, besides higher cost and easy wear and tear.

"U.S. Pat. No. 8,466,954 teaches a display which alternately presents images from at least two video feeds and in which a synchronized, shuttered filter device is used that only permits the viewing of images from one of the video feeds. It is a time-sharing arrangement to allow multiple viewers to view different images on the same display. The downside is that the frame rate is reduced and so the visual quality of the display is degraded."

In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventors' summary information for this patent application: "The present invention is to provide an image device. The image device includes a plurality of pixel groups. Each pixel group includes a plurality of dots arranged in a predetermined identical matrix form, and each pixel group has at least one first color dot, at least one second color dot, at least one third color dot and at least one fourth color dot. The first color dot comprises at least two first color sections controlled independently, the second color dot comprises at least two second color sections controlled independently, the third color dot comprises at least two third color sections controlled independently, and the fourth color dot comprises at least two fourth color sections controlled independently.

"The present invention is to provide a method for controlling the above image device. The method of the invention comprises the steps of: (a) first sub-pixel rendering and color space converting input data for a first image in a first color space, and outputting multi-primary color section signals for the first image in the second color space; and (b) second sub-pixel rendering and color space converting the input data for a second image in the first color space and outputting multi-primary color section signals for the second image in the second color space.

"It is an object of the invention to provide a thin, simple and low-cost 3D image/2D image display device which ensures seamless switching between the display of a 3D image, the display of a 2D image and the display of a mixed 2D/3D image with full resolution and high brightness.

"It is another object of the invention to provide a multi-primary color image device such as RGBW using virtual pixel of one single color to represent a full RGB color pixel by means of sub-pixel rendering and color space conversion.

"It is another object of the invention to display multiple images simultaneously to multiple groups of viewers.

BRIEF DESCRIPTION OF THE DRAWING

"Further advantageous measures are described in the dependent claims. The invention is shown in the attached drawing and is described hereinafter in greater detail.one group of viewers

"FIG. 1 shows a conventional 3D display device;

"FIG. 2 shows the image device according to a first embodiment of the invention;

"FIGS. 3A and 3B show one section of a color dot is for displaying a first image while another section of the same color dot is for displaying a second image according to the first embodiment of the invention;

"FIG. 4 shows the image device according to a second embodiment of the invention;

"FIGS. 5A and 5B show one section of a color dot is for displaying a first image while another section of the same color dot is for displaying a second image according to the second embodiment of the invention;

"FIG. 6 shows the image device according to a third embodiment of the invention;

"FIGS. 7A and 7B show one section of a color dot is for displaying a first image while another section of the same color dot is for displaying a second image according to the third embodiment of the invention;

"FIG. 8 shows a block diagram for illustrating the method for controlling the image device according to the invention.

"FIG. 9 shows the RGBW image device according to the first embodiment of the invention;

"FIGS. 10A and 10B show one section of a color dot is for displaying a first image while another section of the same color dot is for displaying a second image according to the first embodiment of the invention;

"FIG. 11 shows the RGBW image device according to the second embodiment of the invention;

"FIGS. 12A and 12B show one section of a color dot is for displaying a first image while another section of the same color dot is for displaying a second image according to the second embodiment of the invention;

"FIG. 13 shows the RGB image device according to the third embodiment of the invention;

"FIGS. 14A and 14B show one section of a color dot is for displaying a first image while another section of the same color dot is for displaying a second image according to the third embodiment of the invention; and

"FIG. 15 shows the image device according to a fourth embodiment of the invention."

For more information, see this patent application: PHAN, Gia Chuong; WONG, Hon Wah. 3d/2d Multi-Primary Color Image Device and Method for Controlling the Same. Filed February 14, 2014 and posted June 19, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=5103&p=103&f=G&l=50&d=PG01&S1=20140612.PD.&OS=PD/20140612&RS=PD/20140612

Keywords for this news article include: Asia, China, Hong Kong, Vp Assets Limited.

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Source: China Weekly News


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