Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7929064 | Optical unit, video display apparatus, and color switching method A projection-type video display apparatus has a polarizing beam splitter for matching light, which is outputted by a light source unit, to one of S polarizing light and P polarizing light, an optical characteristics switching element for electrically and periodicall... | 04/19/2011 |
| 7483086 | Illumination optical system, projection video system using the same, and integral-type video display An illumination optical system includes a light source for emitting a plurality of different colors of light, a plurality of rotating optical scanners, and a plurality of scanning lenses. Each of the optical scanners has a reflecting surface that is formed helically... | 01/27/2009 |
| 7474360 | Optical unit, video display apparatus, and color switching method A projection-type video display apparatus has a polarizing beam splitter for matching light, which is outputted by a light source unit, to one of S polarizing light and P polarizing light, an optical characteristics switching element for electrically and periodicall... | 01/06/2009 |
| 7441907 | Light source driving method A light source driving method for controlling a first and a second light source assembly of a projection apparatus to turn on and off at least once during each 1/n frame time is provided. The first light source assembly includes first color light sources and third c... | 10/28/2008 |
| 7431463 | Light emitting diode projection display systems A projection display system has at least one light-recycling illumination system and at least one imaging light modulator. The light-recycling illumination system includes a light source that is enclosed within a light-recycling cavity. The light source is a plurali... | 10/07/2008 |
| 7430022 | Color display device The invention relates to a color display device for display a color image and a method of operating such display. The color display device is provided with a plurality of picture elements, two selectable light sources having different predetermined radiance spectra,... | 09/30/2008 |
| 7419269 | Display device and projector To provide a display device and a projector capable of enhancing the quality of dynamic images, of reducing limitations on light sources, enhancing the utilization efficiency of light, and of displaying images in full color, illumination light emitted from a light s... | 09/02/2008 |
| 7412654 | Apparatus and method for handling special windows in a display An apparatus and method for handling special windows in a display comprises a window manager in an operating system that is called by application programs to create special windows. The window manager embeds static key signals including encoded special window inform... | 08/12/2008 |
| 7410261 | Multicolor illuminator system In an image projection system, there are at least two light illumination units producing illumination light beams of respective first and second primary colors. A first beamsplitter is disposed to split at least a portion of the first illumination light beam into su... | 08/12/2008 |
| 7404643 | Projector having polarization conversion element A projector has an illumination system, an electro-optical modulator, a projection optical system, and a scanning system. The illumination system has a light source, a first lens array, a second lens array, a polarization conversion element and a superposing lens. T... | 07/29/2008 |
| 7404644 | Time-sequential colour projection A time-sequential colour projector comprises a pixellated light valve (2), such as a liquid crystal device, and a plurality of light sources (30, 31, 32). The light sources (30, 31, 32) direct light on different sets of pixels of the light valve... | 07/29/2008 |
| 7397484 | Method for displaying an image A method of displaying an image including receiving a plurality of corresponding to an image data, wherein each of the plurality of frames includes a plurality of color sub-frames; sequentially displaying the color sub-frames corresponding to a first frame in a firs... | 07/08/2008 |
| 7379123 | Sequential display system with changing color order To sequentially display pictures in a television signal, a first picture is separated into sets of red, green and blue segments, with each segment of each color interleaved with the segments of the other colors in a first sequence for display in that sequence. Each ... | 05/27/2008 |
| 7372447 | Microdisplay for portable communication systems The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a hand held communication display device. The system can employ an LED il... | 05/13/2008 |
| 7367677 | High efficiency lighting system, scrolling unit and projection system employing the same A highly efficient lighting system, a scrolling unit, and a projection system adopting the highly efficient lighting system and the scrolling unit are provided. The scrolling unit has at least one lens cell. From the viewpoint of light incident upon the at least one... | 05/06/2008 |
| 7364306 | Field sequential light source modulation for a digital display system A digital display system consists of an image modulator and multiple light modulators. An image processing system processes an incoming data stream, scans processed data to an image modulator and controls for the light modulators. Other user inputs and sensors are u... | 04/29/2008 |
| 7362336 | Four color digital cinema system with extended color gamut and copy protection A color display system including a display device for four or more visible color primaries and a processor for controlling the four or more color primaries to selectively render portions of an image or image sequence such that visually equivalent colors displayed in... | 04/22/2008 |
| 7362493 | Micromirror and post arrangements on substrates A micromirror of a micromirror array of a spatial light modulator used in display systems comprises a mirror plate attached to a hinge that is supported by two posts formed on a substrate. Also the mirror plate is operable to rotate along a rotation axis that is par... | 04/22/2008 |
| 7358930 | Display system with scrolling color and wobble device A display system for displaying an image based upon image data includes an image processing unit configured to define a plurality of sub-frame images including a first sub-frame image and at least a second sub-frame image based upon the image data; a scrolling color... | 04/15/2008 |
| 7359008 | Dynamic range and contrast enhancement for microdisplay The invention relates to a light valve system that enhances the contrast ratio for light and dark video images and reduces contouring artifacts. The light valve system comprises a color selection device configured to temporally attenuate component color bands of lig... | 04/15/2008 |
| 7336290 | Method and apparatus for increasing a perceived resolution of a display According to one embodiment, a method of increasing a perceived resolution of a display includes directing light at a optical dithering element and repeatedly transitioning the optical dithering element from a first position to a second position and then back to the... | 02/26/2008 |
| 7333156 | Sequential colour visual telepresence system For implementing an anthropomorphic visual telepresence system with high resolution and low loop latency a sequential color video loop is provided. A sequential color camera sequentially captures color images, each captured image consisting of a portion of a single ... | 02/19/2008 |
| 7324279 | Dual modulator projection system A three dimensional display system 100 using two spatial light modulators and a single projection path. Light source 102 emits a white light beam 104 which typically is focused onto an aperture of a recycling integrator 106. The light bea... | 01/29/2008 |
| 7321354 | Microdisplay for portable communication systems The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a hand held communication display device. The system can employ an LED il... | 01/22/2008 |
| 7317438 | Field sequential liquid crystal display device and driving method thereof, and head mounted display A display with high resolution and reduced flicker of image. The driving method of this invention, or the field sequential driving method, divides one frame of image into a plurality of subframes, i.e., divides the period of one image frame into a plurality of subfr... | 01/08/2008 |
| 7314282 | Color-split optical engine architecture for projection displays A projection display may use a color wheel having radially displaced regions of different colors. As a result, at any instance of time on a spatial light modulator in a projection display, three vertically displaced segments may be utilized, each of which is exposed... | 01/01/2008 |
| 7312913 | Imaging light source with polarization and color recovery The present invention provides a polarized colored light source for a display system in which light of other polarization states and colors are recycled. The color can be scrolled synchronously with a display. In one embodiment, the invention includes a tunnel havin... | 12/25/2007 |
| 7311404 | Optical projection apparatus and projection-type image displaying apparatus A projection-type image displaying apparatus includes: a first color wheel for splitting a light ray from a light source into colored light rays according to color transmission characteristics by the wheel being rotated; a second color wheel for further splitting th... | 12/25/2007 |
| 7309134 | System and method for displaying projector system identification information A system and method of displaying identification information for a projector system are disclosed. The method includes projecting a display onto a viewing surface with the projector system, and projecting an identification image onto the viewing surface over at leas... | 12/18/2007 |
| 7300156 | Prism assembly for separating light A prism assembly is provided. The prism assembly comprises a first prism component having a triangular cross-section along an optical path, a second prism component having a first quadrilateral cross-section along the optical path, a third prism component having a s... | 11/27/2007 |
| 7295231 | Digital camera A digital camera includes a monitor. When outputting through-images on the monitor, high-resolution YUV data outputted from a signal processing circuit is thinned out and created into low-resolution YUV data. The low resolution YUV data of a current frame is written... | 11/13/2007 |
| 7290886 | Illuminating system and method for improving asymmetric projection An illuminating system and method for improving asymmetric projection includes a light source producing a light beam to form a light path, a projection lens disposed in the light path, a light valve inserted in the light path between the light source and the project... | 11/06/2007 |
| 7287860 | Display device, display method, and projector The invention provides a display device and a projector that can improve display performance with a simple structure without accompanying the enlargement of the device. The display device of the invention can include an illumination system capable of outputting a pl... | 10/30/2007 |
| 7289091 | Method of stably driving liquid crystal display apparatus and liquid crystal display apparatus using the method A method of stably driving a liquid crystal display apparatus and a liquid crystal display apparatus, the apparatus including a liquid crystal display panel having data electrode lines allocated for three colors and scan electrode lines crossing the data electrode l... | 10/30/2007 |
| 7289189 | Birefringent filter-based color generation scheme for a passive matrix display device The present invention provides a full color liquid crystal display of passive matrix design that includes a polarizer, an analyzer having a transmission axis, and at least one light generation stage positioned between the polarizer and analyzer for transmitting ligh... | 10/30/2007 |
| 7289090 | Pulsed LED scan-ring array for boosting display system lumens A display apparatus 200 includes a substrate 219 and a number of light emitting diodes (LEDs) 202 coupled to the substrate. An optical element 207 such as a shroud or an integrator rod is located adjacent to at least one of the LEDs. In o... | 10/30/2007 |
| 7284865 | Scrolling device with color separation and projection system incorporating same A scrolling device with color separation and a projection system incorporating same are disclosed. The scrolling device comprises a scrolling shaft and a plurality of dichroic mirrors that are spirally arranged as screw threads on the scrolling shaft. The scrolling ... | 10/23/2007 |
| 7283181 | Selectable color adjustment for image display A display system is configured to produce a color image formed of a plurality of differently colored images and may include at least one light source that directs light along an optical path, and at least one filter having a given optical filter characteristic. The ... | 10/16/2007 |
| 7281806 | System and method for projecting a video image with a temporal LED combiner The disclosed embodiments relate to a system and method for projecting video onto a screen. A video unit (10) comprising a first component (30) configured to create a first beam of light with a first polarity, a second component (40) configured ... | 10/16/2007 |
| 7280280 | Micro-lenses for CMOS imagers and method for manufacturing micro-lenses A micro-lens and a method for forming the micro-lens is provided. A micro-lens includes a substrate and lens material located within the substrate, the substrate having a recessed area serving as a mold for the lens material. The recessed can be shaped such that the... | 10/09/2007 |
