News Column

Researchers Submit Patent Application, "Display Apparatus and Method", for Approval

June 27, 2014



By a News Reporter-Staff News Editor at Health & Medicine Week -- From Washington, D.C., NewsRx journalists report that a patent application by the inventors Nam, Dong Kyung (Yongin-si, KR); Park, Ju Yong (Seoul, KR); Hwang, Kyu Young (Hwaseong-gi, KR); Ha, In Woo (Seoul, KR), filed on May 7, 2013, was made available online on June 12, 2014 (see also Samsung Electronics Co., Ltd.).

The patent's assignee is Samsung Electronics Co., Ltd.

News editors obtained the following quote from the background information supplied by the inventors: "One or more example embodiments of the present disclosure relate to a general display such as a TV, a monitor, a display of a portable device, an advertising display, an educational display field, and the like, and more particularly, to a high density light field display apparatus and method for reproducing and displaying a three-dimensional (3D) image without causing fatigue due to 3D viewing.

"A 3D image display apparatus may refer to an image display apparatus that may provide different images reflecting a viewpoint difference in the left eye and the right eye of a human to make a 3D effect.

"A 3D image display apparatus may include a stereoscopic type display providing a left eye viewpoint image and a right eye viewpoint image, and a multi-view image providing an image from more various viewpoints.

"Recently, the 3D image apparatus in the form of eyewear has become common considering marketability such as ease of technical configuration, a unit cost of production, and the like. To alleviate the inconvenience in wearing and keeping 3D eyewear, an interest in a non-eyewear type of the 3D display apparatus has increased.

"When configuring a 3D display, viewing fatigue due to a convergence-accommodation conflict may occur. Research is being carried out to resolve the convergence-accommodation conflict using a light field image display technique, and the like.

"The light field display corresponds to a concept including a widely known integral photography scheme, and the like, which may generate a light field on a space using a sufficient number of directional lights, and may configure a 3D image without a convergence-accommodation conflict occurring.

"However, a full HD (high definition) image content is becoming common. Thus, to provide a high density light field to generate an HD image, resources available in a display apparatus may be insufficient to provide a high density light field to generate an HD image in 3D."

As a supplement to the background information on this patent application, NewsRx correspondents also obtained the inventors' summary information for this patent application: "The foregoing and/or other aspects are achieved by providing a display apparatus including a position sensor to sense an eye position of a user, a controller to set a virtual viewing window corresponding to the eye position of the user, and to provide a control signal generating a directional light toward the viewing window, and a light generator to generate the directional light based on the control signal.

"The display apparatus may include a light modulator to modulate an intensity of the directional light based on the control signal.

"The position sensor may include at least one camera that may photograph the eye position of the user.

"The position sensor may include at least one camera that may identify the eye position of the user by photographing an identifier fixed around the eye position of the user.

"The light generator may include a backlight to generate a non-directional light, a variable slit to convert, based on the control signal, the non-directional light to a plurality of point light sources, each having a different position, and a lens to generate a directional light toward the viewing window by refracting at least a part of the plurality of the point light sources.

"Here, the variable slit may correspond to a plurality of pixels of a liquid crystal display (LCD) panel.

"The controller may include an eye position detector to calculate a coordinate value of the eye position of the user on a space coordinate using the sensed eye position of the user, and a viewing window setting unit to determine at least one of a position of the viewing window and a size of the viewing window to cover the eye of the user using the coordinate value of the eye position of the user.

"The controller may further include a directional light source controller to control a control signal to generate a directional light toward the viewing window, and a light field image generator to provide a control signal to generate a 3D image of a light field scheme by adjusting an intensity of the directional light toward the viewing window.

"The foregoing and/or other aspects are achieved by providing a display method including sensing an eye position of a user, setting a virtual viewing window corresponding to the eye position of the user, and generating a directional light toward the viewing window.

"The display method may further include displaying, on the viewing window, a light field image by controlling the directional light.

"The generating of the directional light may include generating a non-directional light using a backlight, converting, using a variable slit, the non-directional light to a plurality of point light sources, each having a different position, and generating a directional light toward the viewing window by refracting at least a part of the plurality of point light sources using a refracting lens.

"The setting of the virtual viewing window may include calculating a coordinate value of the eye position of the user on a space coordinate using the sensed eye position of the user, and determining, to cover the eye of the user using the coordinate value of the eye position of the user, at least one of a position of the viewing window and a size of the viewing window.

"The foregoing and/or other aspects are achieved by providing a display apparatus. The display apparatus includes a position sensor to sense an eye position of a user using at least one of a visible light band camera, an infrared camera, and a depth camera, a controller to set a size of a virtual viewing window and to determine a position of the virtual viewing window based on the eye position of the user and a size of the eye, and to provide a control signal to generate a directional light toward the virtual viewing window, and a light generator including a backlight providing a standard light source, a variable slit to modulate the standard light source to a point light source at a predetermined position, and a lens to generate, based on the control signal, the directional light by refracting the point light source toward the virtual viewing window.

"The foregoing and/or other aspects are achieved by providing a display method. The display method includes continuously tracing a pupil position of an eye of a viewer of a display, dynamically setting a virtual viewing window of the display to correspond to the continuously traced pupil position, and generating an image in the virtual viewing window while not generating an image in portions of the display that do not correspond to the virtual viewing window.

"Additional aspects of embodiments will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

"These and/or other aspects will become apparent and more readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings of which:

"FIG. 1 illustrates a display apparatus according to example embodiments;

"FIG. 2 illustrates a diagram to describe a progression of a directional light for generating a viewing window and a high density light field image which are set by a controller of the display apparatus of FIG. 1;

"FIG. 3 illustrates a diagram of generating a high density light field image in a viewing window by a light generator and a light modulator of the display apparatus of FIG. 1;

"FIG. 4 illustrates a diagram to describe an example of a parameter calculation process to design a light generator of the display apparatus of FIG. 1;

"FIG. 5 illustrates a flowchart of a display method according to example embodiments;

"FIGS. 6A, 6B, 6C and 6D illustrate diagrams of a generating process of a high density light field image using the display method of FIG. 5;

"FIG. 7 illustrates a flowchart of the display method of FIG. 5;

"FIG. 8 illustrates a configuration of a controller of the display apparatus of FIG. 1; and

"FIG. 9 illustrates a diagram of a generating process of a high density light field image in the detailed configuration of the controller of FIG. 1."

For additional information on this patent application, see: Nam, Dong Kyung; Park, Ju Yong; Hwang, Kyu Young; Ha, In Woo. Display Apparatus and Method. Filed May 7, 2013 and posted June 12, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4691&p=94&f=G&l=50&d=PG01&S1=20140605.PD.&OS=PD/20140605&RS=PD/20140605

Keywords for this news article include: Samsung Electronics Co. Ltd.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Health & Medicine Week


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