Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed are 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.

Abstract: 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.

Abstract: A cathode-ray tube (CRT) assembly of a projection television is provided. The CRT assembly includes a CRT for creating an image, a lens for magnifying the image created in the CRT and projecting the image onto a screen, a coupler, disposed between the CRT and the lens, within which a cooling liquid receptacle filled with a cooling liquid is provided, a cooling liquid pouring inlet disposed on one side of the coupler and pouring the cooling liquid into the cooling liquid receptacle, and an oilpack connected to the cooling liquid receptacle so that a portion of the cooling liquid is contained when the cooling liquid filled in the cooling liquid receptacle expands.

Abstract: A scan format converter for converting a video format by bi-sigmoid interpolation. In the scan format converter, a memory controller has a look-up table at which first and second displacement values for pixel points of a video format to be converted are stored, controls transmission of color signals input from an external device, and reads the first and second displacement values for the pixel points of the color signals from the look-up table. A mode detector detects horizontal and vertical sync signals input from the external device and outputs a video format detection signal representing a mode of the currently input video format to the memory controller. A memory temporarily stores the color signals.

Abstract: A semiwide-screen television receiver which can provide a horizontally extended picture on a screen. The receiver receives and displays on a cathode ray tube (CRT) an image signal having a 12:9 screen aspect ratio (AR), and includes a cathode ray tube having a horizontal dimension which is larger than that of a conventional CRT having a 4:3 screen aspect ratio. A deflection unit including an inductance variation device for adjusting the inductance value of a horizontal deflection coil is provided, so as to minimize an inductance dispersion of the deflection unit.

Abstract: 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.

Abstract: A rear projector employing an image display uses a polymer dispersion liquid crystal (PDLC) panel which suppresses a turbulent reflection due to a high light refractive index. Accordingly, a slim appearance is attained since a light separating/synthesizing system is eliminated, and the resolution and brightness of the image is improved by precisely and easily controlling the change of the light pathway.

Abstract: A remote control method for controlling a video apparatus such as a television or videocassette recorder includes the steps of displaying a cursor on a display screen in response to a movement of the remote controller; displaying a main menu according to a key input of the remote controller while a cursor is displayed on the display screen; selecting the desired main menu by moving the cursor and displaying a sub-menu belonging to the selected main menu while the main menu is displayed on the display screen; displaying a control menu belonging to the selected sub-menu when the desired sub-menu is selected by moving the cursor while the sub-menu is displayed; and performing the corresponding function when the desired function is selected by moving the cursor while the control menu is displayed, to thereby select the menu by a cursor and reduce the number of function keys of the remote controller, and thus easily control the video apparatus.

Abstract: An automatic channel selecting and/or tuner diagnosing method for a double-tuner television receiver is provided. The method includes the following steps. Performing a first channel selection operation via a first tuner to search for a first channel on which a first broadcast signal is transmitted. Determining if the first tuner receives the first broadcast signal. Performing a second channel selection operation via a second tuner to search for a second channel on which a second broadcast signal is transmitted when the first tuner does not receive the first broadcast signal after performing the first channel selection operation. Determining if the second tuner receives the second broadcast signal. Outputting a first message indicating that the first tuner has a malfunction when the second tuner receives the second broadcast signal.

Abstract: An optical system of an LCD projector includes a light beam splitter for passing only a specific wavelength of light emitted from a light source and reflecting another wavelength. Two reflection type LCDs for a black-and-white signal and a color signal, respectively, are placed in correspondence with the light of the respective wavelengths, split by the light beam splitter. The LCDs either transmit or scatter the light of the respective wavelengths according to whether the particular LCD is turned on or off, so that the resolution can be improved by projecting the LCD for the black-and-white signal together with the LCD for the color signal.