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| Number | Title | Issue Date |
| 7358877 | Obsolescence mitigation for electron bombarded semiconductor tubes in programmable waveform digitizers Method for replacing Electron Bombarded Semiconductor (EBS) tubes in a waveform digitizer having an analog input interface and a digital output interface, the EBS tubes being interposed between the analog input interface and the digital output interface, in which th... | 04/15/2008 |
| 7327372 | Color correcting parameter calculator, image color correcting device, method of calculating color correcting parameters, and program therefor In a color correcting parameter calculator, a color correcting unit 11 calculates a target color by executing color correction processing of an input color on a reference side while a reference side color perception value calculator unit 13 calculates ... | 02/05/2008 |
| 7271853 | Apparatus and method for correcting distortion of image and image displayer using the same An apparatus and a method for correcting a distorted image is capable of correcting an optical distortion of an image and misconvergence by prewarping an inputted image without using a convergence yoke, and an image displayer using the same. The apparatus for correc... | 09/18/2007 |
| 7268837 | Method and system for automated convergence and focus verification of projected images A method and system that objectively measures the convergence and focus of a 2 or 3 spatial light modulator (SLM) projection display. The system uses five (5) CCD cameras and a frame grabber to store red, green, and blue (R-G-B) data from selected pixels located in ... | 09/11/2007 |
| 7263672 | Methods, systems, and data models for describing an electrical device A method and system are described for creating a metadata text file corresponding to a geometry of a physical layout and/or a circuit layout of an electrical device. The layouts are defined in a user interface. A text file having metadata elements in a hierarchical ... | 08/28/2007 |
| 7233707 | Image processing system, projector, program, information storage medium, and image processing method A projector includes a projection section which projects an all-white image and an all-black image onto a screen, a sensor which generates first sensing information by sensing the all-white image and generates second sensing information by sensing the all-black imag... | 06/19/2007 |
| 7227592 | Self-correcting rear projection television In a rear projection television, cathode ray tubes are mounted inside an enclosure so that each cathode ray tube projects output images onto a rear projection screen using a corresponding electron beam. Calibration images are generated for each cathode ray tube. A c... | 06/05/2007 |
| 7220003 | Image-projecting apparatus The present invention discloses an image-projecting apparatus which employs an AF (auto-focusing) system suitable for use conditions of the image-projecting apparatus and is capable of securing satisfactory AF accuracy under bright conditions. The image-projecting a... | 05/22/2007 |
| 7215362 | Auto-calibration of multi-projector systems The method for automatically calibrating a multi-projector system with at least two projectors, a digital camera and a control unit for controlling the projectors and the camera is performed according to the following steps: produc... | 05/08/2007 |
| 7199533 | Convergence control apparatus for video display A convergence control apparatus for a video display is provided. In the apparatus, a convergence controller receives a vertical synchronization signal and a horizontal synchronization signal and then outputs a vertical convergence correction voltage and a horizontal... | 04/03/2007 |
| 7170239 | Circuit and method for reducing east-west geometry mismatch between the top and bottom of a raster display The present disclosure describes a technique for reducing east-west geometry mismatch between the top and bottom of a raster display. This is accomplished by generating a horizontal correction signal that does not have any discontinuities. Since there are no discont... | 01/30/2007 |
| 7166972 | Vertical deflection apparatus A vertical deflection apparatus supplies a vertical deflection current to a vertical deflection coil to deflect an electron beam in the vertical direction of a screen. The apparatus includes: a vertical deflection current output circuit that outputs a vertical defle... | 01/23/2007 |
| 7158193 | Image misconvergence correction apparatus for less switching noise influence Disclosed is an image misconvergence correction apparatus having a correction value generation unit for calculating a convergence correction value to correct misconvergence occurring when a video signal is scanned on a display device; an amplification unit for perfo... | 01/02/2007 |
| 7129655 | Image distortion correction apparatus capable of correcting misconvergence using an amplifier An image distortion correction apparatus is disclosed which can correct misconvergence using a D-class amplifier. The image distortion correction apparatus has an image processor for detecting an image signal and horizontal/vertical synchronous signals from a signal... | 10/31/2006 |
| 7097311 | Super-resolution overlay in multi-projector displays A technique, associated system and computer executable program code, for projecting a superimposed image onto a target display surface under observation of one or more cameras. A projective relationship between each projector being used and the target display surfac... | 08/29/2006 |
| 7068283 | Gamma correction only gain/offset control system and method for display controller A display controller provides luminance values to a display, where values for contrast and brightness for the display are constructed within a gamma correction mapping table. The display controller has an original gamma correction mapping table, a gamma correction t... | 06/27/2006 |
| 7053966 | Adjusting convergence apparatus and method Disclosed is a projection image display apparatus, specified in a convergence adjusting apparatus employing a spline interpolation scheme. In the projection image display apparatus, the convergence adjusting apparatus includes controller for selecting sections arran... | 05/30/2006 |
| 7034901 | Convergence optimization in a projection display A projection display comprises three cathode ray tubes each having a deflection yoke and convergence yoke and each tube generating a raster for projection. One of the three cathode ray tubes has the convergence yoke coupled for current flow in a direction opposite t... | 04/25/2006 |
| 7034900 | Color display device and method utilizing convergence correction In a color display device, apparatus and method are provided to produce a convergence correction signal based on digital convergence correction values. The data rate by which the data is supplied to the apparatus varies, depending on the area of the display correspo... | 04/25/2006 |
| 7012633 | Color calibration method for imaging color measurement device A color calibration method for an imaging color measurement device utilizes a detector array, a plurality of optical elements, and multiple instances of irradiation of the detector array for a single measurement. A flat-fielding correction error correction matrix of... | 03/14/2006 |
| 6999133 | Digital correction module for video projector Digital correction module for video projector where a correction module is provided to give a non-linear re-imaging of an image so that it is displayed correct on a non-ideal screen (curved screen) where a correction module is provided in each of a plurality of vide... | 02/14/2006 |
| 6995810 | Method and system for automated convergence and focus verification of projected images A method and system that objectively measures the convergence and focus of a 2 or 3 spatial light modulator (SLM) projection display. The system uses five (5) CCD cameras and a frame grabber to store red, green, and blue (R-G-B) data from selected pixels located in ... | 02/07/2006 |
| 6982766 | Digital raster correction A projection display uses a matrix of digital correction factors defining deflection correction factors between which linear interpolation is used for intermediate points on the display. A circuit for generating a correction signal to correct image distortion on a d... | 01/03/2006 |
| 6952242 | Convergence correction of a CRT screen or projector A control signal for controlling a correction circuit for at least one electron beam that scans a screen line by line, the amplitude of which varies along each line according to a curve of a first type determined by line parameters, each of the line parameters varyi... | 10/04/2005 |
| 6939011 | Image processing system, projector, program, information storage medium and image processing method To provide an image processing system and the like which can more exactly correct the distortion in an image by reducing the influence of color in an area onto which the image is projected, a projector is provided with a correction section which corrects image signa... | 09/06/2005 |
| 6932479 | Image processing system, projector, program, information storage medium and image processing method To provide an image processing system and the like which can correct a distortion in a projected image automatically and adequately, a projector has an area sensor section which senses a sensing region onto which an image is projected and outputs sensing information... | 08/23/2005 |
| 6879352 | Convergence measuring apparatus and method thereof A convergence measuring apparatus and a measuring method thereof. The apparatus for measuring a convergence includes: a first camera for obtaining the certain pattern formed on the cathode ray tube; a light path dividing section for processing the certain pattern fo... | 04/12/2005 |
| 6836298 | Apparatus and method for correcting distortion of image and image displayer using the same An apparatus and a method for correcting a distorted image is capable of correcting an optical distortion of an image and misconvergence by prewarping an inputted image without using a convergence yoke, and an image displayer using the same. The apparatus for correc... | 12/28/2004 |
| 6804569 | Distributed manufacturing with feedback Methods and apparatus implementing a technique for assembling a device, such as a digital convergence monitor, at more than one site where data is supplied from a first site to a second site and then the data is used in assembly of the device at the second site. In ... | 10/12/2004 |
| RE38574 | Method and apparatus for reducing visibility of damping wires in aperture grill display tubes A method and apparatus for reducing visibility of damping wire artifacts in aperture grill display tubes comprises a sensor device for locating the artifacts and responsively generating amplitude values, a processor for receiving the generated amplitude values and r... | 08/31/2004 |
| 6784947 | Image display apparatus and method of correcting image on image display apparatus against inclination by terrestrial magnetism An image display apparatus which employs a cathode ray tube displays, when an image displayed on a screen of the cathode ray tube is to be corrected against an inclination caused by the terrestrial magnetism, a reference for correction is displayed on the screen of ... | 08/31/2004 |
| 6753932 | Method and apparatus for controlling convergence of color signals An image processing apparatus is disclosed by which correction of convergence and correction of distortion of an image can be performed with a high degree of accuracy. Correction data to be used for correction of position errors of the three colors of red, green and... | 06/22/2004 |
| 6741295 | Preventing doming phenomena In a method of preventing doming phenomena, luminance histogram distribution values are obtained (10) from a luminance signal, the various luminance histogram distribution values are processed and normalized (12), the luminance histogram distribution v... | 05/25/2004 |
| 6711597 | Interpolation method using pre-emphasized input samples A method for producing a plurality of successive output data values defining an output curve that approximates an input curve defined by a plurality of input sample values, the output data values having a higher sampling frequency than the input sample values, the m... | 03/23/2004 |
| 6707509 | Method for adjusting convergence in a projection television receiver A method for adjusting convergence in a projection television receiver, in which a marker contained in a projected image is adjusted by a manipulated variable to illuminate a photosensor arranged adjacent to the projection screen. The method employs two markers whic... | 03/16/2004 |
| 6704064 | Method and apparatus for convergence correction in a television receiver A convergence method for color television receiver comprises the steps of emitting a test signal from a control circuit to a first convergence channel to generate a current of a predetermined intensity in a convergence coil assigned thereto. The control c... | 03/09/2004 |
| 6704758 | Interpolation method for smooth convergence correction A method for generating a convergence correction curve from a plurality of successive output data values determined from a plurality of input sample values smaller in number than the plurality of output data values, the method comprising the steps of: def... | 03/09/2004 |
| 6686707 | Method and apparatus for providing a dynamic rotational alignment of a cathode ray tube raster A method and apparatus used to step and correct the position of raster lines in a sinusoidal or zig-zag deflection system. By combining the magnetic flux generated with a rotation "twister" coil and a vertical deflection coil, scan lines can be uniformly ... | 02/03/2004 |
| 6686710 | Circuit and method for regulating current using autobias A circuit for regulating a signal, such as a cathode current. The circuit has an input stage for inputting a signal and for producing a sense signal based thereon. The circuit may input timing signals and have a first stage for comparing a first reference... | 02/03/2004 |
| 6600276 | Automatic convergence control method and apparatus for projection television A convergence control method and apparatus for a projection television are provided. The convergence control apparatus includes an image signal decoder, a convergence control unit, and a main microcomputer. The image signal decoder processes an input imag... | 07/29/2003 |
