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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 5842088 | Method of calibrating a spatial light modulator printing system A method for calibrating a printing system using a spatial light modulator. The spatial light modulator is an array of individually activated elements, all of which are set in a predetermined state, such as the ON state. Light is then directed onto the ar... | 11/24/1998 |
| 5826974 | Spherical illuminator A spherical illuminator (10, 40, 50, 60) having an upper diffuser (17, 47, 56, 62) with a concave surface, and having either an opposing reflector (18, 41) or an opposing lower diffuser (57, 63) with a concave surface. The two concave surfaces are placed ... | 10/27/1998 |
| 5825194 | Large integrated circuit with modulator probe structures A method of testing a large integrated circuit (10) of modular design. Test equipment is connected to a dedicated testing pad section (20) for each circuit section (22, 24, 34) of each module (12, 14, 16). The circuit section under test is tested via the ... | 10/20/1998 |
| 5818095 | High-yield spatial light modulator with light blocking layer A semiconductor device with an optically active region which receives light, and has a layer of metal which blocks the light from the substrate. The substrate contains addressing circuitry which can experience current leakage if photocarriers are allowed ... | 10/06/1998 |
| 5817569 | Method of reducing wafer particles after partial saw A method of fabricating a monolithic device, preferably a micromechanical device, from a wafer (20) by carefully selecting the composition of two or more layers of photoresist (52,54). The present invention comprises choosing compatible photoresist layers... | 10/06/1998 |
| 5815641 | Spatial light modulator with improved peak white performance A spatial light modulator based imaging system (30) with improved peak white performance characteristics. The apparent dynamic range of the spatial light modulator (74) is increased by adding light to pixels neighboring a saturated pixel. An apparent bloo... | 09/29/1998 |
| 5815220 | Color demodulation for digital television A digital sampling and separation unit (12) for a television receiver (10) of a composite video signal, such as an NTSC signal, which has a color subcarrier. The video signal is sampled at a frequency selected in accordance with the invention. This freque... | 09/29/1998 |
| 5812303 | Light amplitude modulation with neutral density filters A system and method for increasing the number of bits available for use in a video display system that includes at least one spatial light modulator. The system uses a wheel (30) of three colors, or a color wheel that is clear, including at least one segm... | 09/22/1998 |
| 5808780 | Non-contacting micromechanical optical switch A micromechanical optical switch (30). A reflective surface with two angled reflective surfaces (32,34) positioned opposite a micromechanical device (12). The micromechanical device is positioned such that light input along a path (36) to a first (32) of ... | 09/15/1998 |
| 5797060 | Electrophotographic printing subsystem with self-monitoring and adjustment An electrophotographic subsystem (130) with on-board monitoring and adjusting capabilities. The subsystem contains a photoreceptor, at least one toner dispenser, a light sensor and a processor. The processor monitors either light received from a light-ima... | 08/18/1998 |
| 5796526 | Illumination optics for spatial light modulator Variations on the Koehler illumination system, used for providing light to be reflected from, or transmitted by, an SLM. An anamorphic illumination system (10) uses multiple light sources (11) and a cylindrical lens (14) to provide an elongated and compre... | 08/18/1998 |
| 5794095 | Intelligent printing system A toner dispenser with on-board intelligence. The toner dispenser includes a reservoir of toner material and memory that stores the characteristics and amount of that toner material contained within. A coil resides inside the reservoir to allow the system... | 08/11/1998 |
| 5793936 | Center-line anti-aliasing for digital printing A method of eliminating the effects of aliasing when printing objects having opposing edges. A center line between the opposing edges is identified. (FIG. 3). "Opposing pixels" on the edges are also identified and assigned offsetting grayscale values. (FI... | 08/11/1998 |
| 5790205 | Method of increase sharpness in digital displays A method for processing video data for increased sharpness. The data undergoes a process by which it is filtered in two dimensions. Using separable, one-dimensional filters, the process cores the data to prevent noise enhancement and applies gain to the r... | 08/04/1998 |
| 5786843 | Two-dimensional modulation for line screen printing An improved method of line screen printing. Instead of screening the image with only one set of lines, the image is also screened with a second set of lines, which are substantially orthogonal to those of the first set. (FIG. 3). The screening is accompli... | 07/28/1998 |
| 5777694 | Color wheel with plastic film filters A color wheel (15) for use in a display system (10). The color wheel (15) is comprised of a rigid hub (23) and an outer perimeter of color filter segments (21), which are made from a thin plastic material.... | 07/07/1998 |
| 5777589 | Color display system with spatial light modulator(s) having color-to-color variations in data sequencing Methods of reducing artifacts in SLM-based display systems (10, 20), whose images are based on data displayed by bit-weight for pulse-width modulated intensity levels. A first method is suitable for systems (20) that use multiple SLMs (14) to concurrently... | 07/07/1998 |
| 5774604 | Using an asymmetric element to create a 1XN optical switch An architecture for a compact, 1×N optical switch. The switch package receives light from an input optical fiber (12b), which is directed over a well or gap at the bottom of which lies a micromechanical structure (10). If the structure is in an unaddress... | 06/30/1998 |
| 5774252 | Membrane device with recessed electrodes and method of making A membrane device is provided in which a plurality of ridges (14) and recesses (16) are formed proximate to a substrate (12). Electrodes (18) are formed within the recesses (16). A spacer (20) supports a membrane (22). Application of a potential differenc... | 06/30/1998 |
| 5771060 | Method for printing control in the process direction Higher quality printing is difficult in implementation in spatial light modulator printers. The two major problems are accomplishing gray scale within the line time constraints, and eliminating staircasing artifacts within the images printed (81). It can ... | 06/23/1998 |
| 5766369 | Method to reduce particulates in device manufacture An improved process for manufacturing semiconductor devices (10). The device, which could be a semiconductor wafer, an individual chip, or a device that has integrated within it semiconductor devices, such as a compact disk drive, is placed or held upside... | 06/16/1998 |
| 5764208 | Reset scheme for spatial light modulators A method for causing a micromechanical spatial light modulator to display data for a period less than its settling time. The modulator elements receive a first pulse (40) that causes them to release from their previous state, a bias voltage is removed and... | 06/09/1998 |
| 5751379 | Method to reduce perceptual contouring in display systems A method of pulse width modulation using a spatial light modulator (40) with a finite transition time. The method uses m bits per sample to digitize the incoming data, but apportions the LSB times for pulse width modulation based upon m-1 bits. The curren... | 05/12/1998 |
| 5748250 | Video display system with digital de-interlacing A line generator (31) for receiving fields of pixel data sampled from a video input signal and for generating additional lines of pixel data so that the display frames will have more lines than the fields. The line generator (31) has a motion detector (31... | 05/05/1998 |
| 5739941 | Non-linear hinge for micro-mechanical device A non-linear torsion hinge (12, 22) for a micro-mechanical device (10, 20) having a hinged movable element (11, 21). Each hinge (22) is comprised of two hinge strips (22a) spaced apart in the same plane, such that the axis of rotation of at least one of t... | 04/14/1998 |
| 5737038 | Color display system with spatial light modulator(s) having color-to-color variations in the data bit weight sequence Methods of reducing artifacts in SLM-based display systems (10, 20), whose images are based on data displayed by bit-weight for pulse-width modulated intensity levels. A first method is suitable for systems (20) that use multiple SLMs (14) to concurrently... | 04/07/1998 |
| 5729276 | Method for printing using horizontal offset Higher quality printing is difficult in implementation in spatial light modulator printers. The two major problems are accomplishing gray scale within the line time constraints, and eliminating staircasing artifacts within the images printed (81). It can ... | 03/17/1998 |
| 5729245 | Alignment for display having multiple spatial light modulators A method and structure for a display system having multiple spatial light modulators (SLMs) (16), each of which contributes an image of one color that is perceived by the viewer as a combined image. The SLMs (16) have more rows and columns of pixel elemen... | 03/17/1998 |
| 5721622 | Grayscale printing with spatial light modulator and sliding window memory A method for printing grayscale images that compensates for problems in the printing process. The presence of a defective element on a spatial light modulator (12) is compensated for using a background value. The background value is determined by the numb... | 02/24/1998 |
| 5719682 | Method of improved printing using a spatial light modulator A method for printing grayscale images that compensates for problems in the printing process. The presence of a defective element on a spatial light modulator (12) is compensated for with use of a white balancing area. If a column of the modulator (12) ha... | 02/17/1998 |
| 5717524 | Optical guide for increasing printer image width An optical guide (10, 40, 50, 60) for horizontally aligning two vertically stacked images generated by one or two SLMs. The optical guide has a channel separator (10a) that directs both images along two different paths. A pair of aligning reflectors (10b ... | 02/10/1998 |
| 5706123 | Switched control signals for digital micro-mirror device with split reset A method of providing control signals for resetting mirror elements (10,20) of a digital micro-mirror device (DMD) having reset groups (FIG. 4), or for resetting moveable elements of other micro-mechanical devices that operate with similar principles. A b... | 01/06/1998 |
| 5705299 | Large die photolithography An improved reticle (20) and method of using it to expose layers of wafers for large integrated circuits (10). The integrated circuit (10) is designed so that nonrepeating patterns are laid out in perimeter areas, distinct from the center area containing ... | 01/06/1998 |
| 5699168 | Grayscale printing with sliding window memory A method for printing grayscale images. A sliding window memory stores an array of exposure data. The memory is initialized (80) with zero values. The memory is then addressed (82) so that the last row of the array is filled with exposure data. A microima... | 12/16/1997 |
| 5696549 | Method of reducing print artifacts Higher quality printing is difficult in implementation in spatial light modulator printers. The two major problems are accomplishing gray scale within the line time constraints, and eliminating staircasing artifacts within the images printed (81). It can ... | 12/09/1997 |
| 5694250 | Optical guide for increasing printer image width An optical guide (10, 40, 50, 60) for horizontally aligning two vertically stacked images generated by one or two SLMs. The optical guide has a channel separator (10a) that directs both images along two different paths. A pair of aligning reflectors (10b ... | 12/02/1997 |
| 5691780 | Phase error control for color wheel A motor control unit (15c) for synchronizing a color wheel (15) to an incoming video signal and for re-synchronizing the color wheel after a channel change. The motor control unit (15c) has an error control unit (31), which detects an out-of-phase conditi... | 11/25/1997 |
| 5680258 | Optical guide for increasing printer image width An optical guide for horizontally aligning two vertically stacked images generated by one or two SLMs. The optical guide has a beam splitter that directs both images along two different paths. A first and a second aligning reflectors each disposed along e... | 10/21/1997 |
| 5680257 | Light collection optics for spatial light modulator Various light collection systems (10, 20, 30), for providing light to be reflected from, or transmitted by, an SLM. Two systems (10, 20) include reflectors (11, 21), which are designed to collect rear-emitted light from a source, as well as lenses (12, 22... | 10/21/1997 |
| 5680180 | Color balance compensation for digital display system with color wheel A method of detecting and compensating for colors displayed by a display system (10) that uses a light source (16) and a color wheel (15). A desired color balance is specified in terms of a power ratio of three primary colors. This ratio is then compared ... | 10/21/1997 |
