Samsung Electronics Co., Ltd.

Chang-wan Hong

Young-sun Kim

Jong-sul Min

Sang-whoe Dho

Sang-su Lee

Young-Soo Han

Chang-yeong Kim

Yung-jun Park

Sung-sik Kim

Jung-young Son

Seong-deok Lee

Sang-hoon Lee

Jeong-il Kang

Ho-young Lee

Yang-seock Seo

Dong-ha Kim

Chung-Wook Roh

Seung-soo Kang

Sang-hak Kim

Han-il Ko

Jong-bae Park

Tae-hong Jeong

Sung-soo Jung

Koichi Sono

Tac-hong Jeong

Disclosed is a display apparatus including: a display unit; a power supply unit which supplies power to at least one external device; and a controller which displays on the display unit an at least one indicating image indicating an at least one power supply area of the display unit supplying power to the at least one external device, and controls the power supply unit to supply power to the at least one external device placed on the at least one power supply area in a wireless manner.

Display apparatus for supplying power to an external device and control method thereof

A method of removing a Moire pattern in a 3D image display apparatus using complete parallax. The method of removing a Moire pattern in a 3D image displaying system with an image display device having an image display panel and a unit for providing complete parallax, by intersecting the image display panel and the unit with each other at a predetermined angle. The unit is an intersection lenticular plate or a micro lens array plate located at a front or rear of the image display panel.

Method of removing Moire pattern in 3D image display apparatus using complete parallax

A display device and method for supplying stable electric power for a light source are provided. A display device comprises a plurality of light sources, a variable electrical power supply which supplies electric power for the light sources, a switching unit which is connected in series with the light sources, and a controller which controls the variable electrical power supply so that voltage across both ends of the switching unit is consistently held in relation to voltage across both ends of the light sources.

Display device and control method thereof

A 3D image displaying unit in which 2D and 3D images are interchangeable. The 3D image displaying unit includes an image display panel which displays 2D or 3D images, and an optical plate which is provided behind the image display panel and refracts an incident light to the image display panel. Also, the 3D image displaying unit includes a first flat display device which displays a multi-viewpoint image in a case where the 3D image is displayed, and is transparent in a case where the 2D image is displayed, an optical plate which refracts lights that are incident from the first flat display device and provides parallax in a predetermined direction, and a display unit which provides the lights that pass through the optical plate with a parallax in the vertical direction to a parallax provided by the optical plate in the case where the 3D image is displayed, and displays the corresponding 2D image in the case where the 2D image is displayed.

Image displaying unit of a 3D image system having multi-viewpoints capable of displaying 2D and 3D images selectively

A method and apparatus for reducing false contour in a digital display apparatus including a plasma display panel (PDP) using pulse number modulation are provided. The apparatus includes a data converter, which processes an image signal such that a gray level of the image signal exists within a predetermined range; an error diffuser, which diffuses an error between a gray level of a current pixel in a current frame of the image signal and a gray level of the current pixel in the current frame after being subjected to gray-level change, to pixels adjacent to the current pixel in the current frame; a gray-level changing unit, which calculates a difference in a gray level between each pixel in the current frame of the image signal and a pixel corresponding to the current frame pixel in a previous frame of the image signal, and changes the gray level of the current frame pixel based on the gray level difference such that transition in an emission pattern of higher weighted subfields among subfields, which illuminate according to the gray level of the current frame pixel, between the current frame pixel and the previous frame pixel is minimized; and a subfield converter, which converts a subfield according to a gray level output from the gray-level changing unit.

Method and apparatus for reducing false contour in digital display panel using pulse number modulation

Disclosed is a plasma display panel. The plasma display panel comprises a lower substrate and an upper substrate, which are spaced apart by a predetermined distance from each other to define a plurality of discharge cells therebetween; a plurality of barrier ribs disposed between the lower substrate and the upper substrate; a plurality of address electrodes formed in parallel with one another on an upper surface of the lower substrate; a plurality of discharge electrodes formed in a direction crossing the address electrodes on a lower surface of the upper substrate; and a fluorescent layer formed on an inner wall of the discharge cells, wherein the upper substrate comprises a plurality of light guides, which are formed in parallel with the plurality of address electrodes to focus and output visible light generated from the discharge cells by a discharge, the light guides having a light incident surface.

Plasma display panel with light guides for improving contrast

Disclosed is a plasma display panel comprises a lower substrate and an upper substrate, spaced apart by a predetermined distance to define a discharge space therebetween; a plurality of barrier ribs between the lower substrate and the upper substrate, partitioning the discharge space to form a plurality of discharge cells; a plurality of address electrodes formed in parallel on the upper surface of the lower substrate; a plurality of discharge electrodes formed at an angle to the address electrodes on the lower surface of the upper substrate; a fluorescent layer formed on the inner walls of the discharge cells; and an external light shielding member formed on the upper substrate, preventing external light from entering the discharge cells, wherein the lower surface of the upper substrate has a plurality of cylindrical lenses, corresponding to each of the discharge cells.

Plasma display panel with improved brightness and contrast

A plasma display panel (PDP) is provided. The plasma display panel comprises a lower substrate and an upper substrate spaced apart by a predetermined distance, forming a discharge space; a plurality of barrier ribs between the lower substrate and the upper substrate, partitioning the discharge space to form a plurality of discharge cells; a plurality of address electrodes formed in parallel on the upper surface of the lower substrate; a plurality of discharge electrodes formed at an angle to the address electrodes on the lower surface of the upper substrate; a fluorescent layer formed on the inner wall of the discharge cells; and an external light shielding member formed on the upper substrate prevents external light from entering the discharge cells, wherein the upper substrate has a plurality of convex lenses parallel to the address electrodes, to focus generated visible light out of the PDP.

Plasma display panel enhancing a bright room contrast

A method and an apparatus for changing the brightness of an image are provided. The method for changing the brightness of an image includes obtaining a level incremental rate, which denotes the degree to which the brightness of three input color components, i.e., first, second and third color components, will be increased according to a determined color gamut, scaling the input color components using the level incremental rate and determining the results of the scaling as incremental values of the input color components, obtaining a fourth color component value using the incremental values, and obtaining output color components, the brightnesses of which are increased from those of the input color components, using the fourth color component value and the incremental values.

Method and apparatus for changing brightness of image

A cathode-ray tube (CRT) assembly of a projection television includes a CRT for creating an image, a lens for magnifying the image created in the CRT and projecting the image onto a screen, and a coupler disposed between the CRT and the lens. A cooling liquid receptacle is provided within the coupler, and is filled with a cooling liquid. For that purpose, a cooling liquid pouring inlet is disposed on one side of the coupler for pouring the cooling liquid into the cooling liquid receptacle, and an oilpack is connected to the cooling liquid receptacle so that a portion of the cooling liquid is contained therein when the cooling liquid in the cooling liquid receptacle expands due to heat generated by the CRT. The oilpack comprises a sealed space, a pack holder disposed between the sealed space and the cooling liquid pouring inlet, and an oilpack coupling mechanism formed on the pack holder.

CRT assembly of projection television

An image projecting apparatus having an optical switch of a non-square matrix structure, is provided. A light source emits a plurality of monochromatic lights having different wavelengths. A first light transmission unit includes of a plurality of optical fibers that allows monochromatic lights to be passed therethrough. An optical switch unit has a plurality of non-square matrix type reflecting mirrors to selectively reflect the monochromatic lights. The reflecting mirrors includes a first group placed at odd lines and a second group placed at even lines. A square-beam generation unit converts reflected monochromatic lights into square beams, and a panel transmits the monochromatic lights converted into square beams and forms monochromatic signals of a predetermined size.

Apparatus for image projecting having a matrix type of optical-switch

An image projecting apparatus including a light source that emits a plurality of monochromatic lights of different wavelength, a condenser lens that concentrates the plurality of monochromatic lights, a color separating device that has a plurality of dichroic mirrors which while rotating selectively reflect or transmit the plurality of incident monochromatic lights. A square beam generator receives the input of two reflected monochromatic lights from the color separating device almost simultaneously, thereby forming two square beams. A panel unit receives the two square beams generated, thereby forming respectively corresponding monochromatic color stripes thereon. By selectively reflecting or transmitting the plurality of incident monochromatic lights with the plurality of dichroic mirror wheels, light utilization at a panel increases. Further, since the two different monochromatic color stripes are simultaneously formed on the panel unit, partial overlapping of the monochromatic color stripes on the panel unit is prevented.

Color separating device using dichroic mirror wheel and image projecting apparatus using the same

An apparatus and method for controlling automatic adjustment of a power supply of a display panel driving system. According to the apparatus and method, a voltage of the power supply of the display panel driving system is automatically adjusted in order to have the best possible image quality. According to the apparatus and method, since the PDP driving power supply is not manually adjusted using the variable resistors as in the related art, but is automatically adjusted. The apparatus manufacturing process is simple, and deviation caused by the automatic adjustment of the power supply is decreased compared with the manual adjustment of the related art, by automatically adjusting the PDP driving voltage affecting to the contrast deviation and brightness deviation of the PDP image in the PDP driving power supply circuit so as to maintain the best possible image quality.

Apparatus and method for controlling automatic adjustment of power supply of display panel driving system

An image projecting apparatus has optical switches in first optical switch unit arranged in a square matrix arrangement, and a second optical switch unit of optical switches in single file for selectively reflecting the monochromatic lights reflected from the first optical switch unit. A light source irradiates a plurality of monochromatic lights of different wavelengths and the monochromatic lights are passed through the optical switches and a square beam generator such that they are incident on a panel unit to realize a monochromatic color stripe of a predetermined size. Light utilization increases through the use of first and second optical switch units, and overlapping between monochromatic color stripes can be prevented through the use of digital micromirror device (DMD) panel or liquid crystal on silicon (LCOS) panel of fast responsiveness.

Image projecting apparatus having optical switch

A projection screen for a rear projection television set includes a Fresnel lens for focusing incident image light so as to center on an optical axis of the projection screen, and an optical diffusion member including a lenticular lens portion for diffusing the image light received from the Fresnel lens, wherein the external surface of the optical diffusion member is made of glass. The projection screen provides a wider angle of view compared with the Fresnel lens made of acryl and is resistant to scratching or breakage.

Growing community of inventors

Yongin-si, South Korea

Chang-wan Hong