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| Number | Title | Issue Date |
| 7880818 | Device and method for correcting kinescope scan distortion We describe a device and an associated method that includes an EHT signal processing module to generate a compensated gain signal responsive to a first EHT signal. A field fly-back processing module generates a first correcting signal responsive to a first VFB signa... | 02/01/2011 |
| 7408595 | Method and apparatus for image correction The disclosed embodiments relate to a system and method for correcting a video image. In an exemplary embodiment, an image processing unit (21) comprises an image offset generator (56) configured to calculate a baseline measurement for a first display ... | 08/05/2008 |
| 7379614 | Method for providing services on online geometric correction using GCP chips Disclosed is a method for providing services on online geometric correction using, in which information related with GCP (Ground Control Point) used for correcting geometric distortion of an image collected by an aircraft or a satellite are transmitted online throug... | 05/27/2008 |
| 7372509 | Focus voltage amplifier A dynamic focus amplifier for generating a dynamic focus voltage for a focus electrode for a cathode ray tube at a capacitive load includes a source of a periodic signal at a horizontal deflection frequency. A pull-down transistor is responsive to the periodic signa... | 05/13/2008 |
| 7293881 | Video projector for dome screen A video projector projects an image without reducing the resolution, onto the full dome surface by the use of a single-eye fisheye lens. The video projector has a single-eye fisheye lens for projecting a beam of light from an image display device onto the dome surfa... | 11/13/2007 |
| 7283177 | Method and apparatus for controlling the functions of an image capturing apparatus A control apparatus for remotely controlling one of adjusting functions of an image capturing apparatus, including contrast, gamma, sharpness, and aperture. The control apparatus transmits to the image capture apparatus a first command requesting a current value of ... | 10/16/2007 |
| 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 |
| 7262563 | 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 spaced ... | 08/28/2007 |
| 7252386 | Keystone distortion correction of a projector The method comprises the steps of: capturing an output image projected on an actual projection surface; outputting imaging information that includes brightness information having a correlation to a brightness; and correcting a distortion of the output image in relat... | 08/07/2007 |
| 7234007 | Adjustable elasticity FIFO buffer have a number of storage cells equal to a frequency offset times a number of data units in a data stream A method of processing a data stream through a buffer is performed in accordance with a write clock and a read clock. The buffer has a plurality of sequentially numbered storage cells. The method includes the steps of selecting an initial preload value, with the sel... | 06/19/2007 |
| 7233370 | Method for correcting for distortion of projected image, program for correcting image distortion, and projection-type image display device An image distortion correction method is provided which is capable of correcting for distortion of a projected image by designating an arbitrary correction point by using a simple and easy operation without independently providing a display device and/or a pointing ... | 06/19/2007 |
| 7233118 | Line deflection circuit for a television receiver A line deflection circuit for a television receiver having a deflection coil, an S capacitor for S correction of the linearity of the deflection, the capacitor being connected in series with the deflection coil, and having means for changing over the linearity of th... | 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 |
| 7227593 | Apparatus for preventing auto-convergence error in projection television receiver Disclosed is a video display an auto-convergence error in a projection television receiver (TV) capable of preventing generation of an error when an auto-convergence is performed. The apparatus includes a screen for displaying an image signal, first to eighth sensin... | 06/05/2007 |
| 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 |
| 7212218 | Video display apparatus and video display method When the combination of the image signal and contents each having various aspect ratios is displayed on the display with various aspect ratios, an image display device that generates a proper display screen with simple operation or automatically is provided. The ima... | 05/01/2007 |
| 7204596 | Projector with tilt angle measuring device A projector having a tilt angle measurement device is provided with: a projection device for projecting an image onto a projection surface; a tilt angle measurement device for calculating the tilt angle that is formed between the axis of projection of the projection... | 04/17/2007 |
| 7187345 | Image forming method and charged particle beam apparatus An image forming method and a charged particle beam apparatus suitable for suppressing the inclination of charging when scanning a two-dimensional area with a charged particle beam. A third scanning line located between a first scanning line and a second scanning li... | 03/06/2007 |
| 7176908 | Picture display device and picture display method Video signals from a plurality of personal computers are written to a memory that stores video signals for a plurality of display screens through respective buffers. The video signals may be read from the respective buffers and displayed simultaneously on a single m... | 02/13/2007 |
| 7170550 | Television data management system Information about various adjustments made to TVs during assembly is entered into a database after each adjustment, to facilitate monitoring and reporting of the assembly process, so that corrective action when appropriate can be taken more quickly. ... | 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 |
| 7137890 | Modifying game image from wide to normal screen using moving or eye direction of character A game apparatus, a storage medium, a transmission medium and a program correspond to a normal screen and a wide screen. An image generation unit 150 comprises a wide image data generation unit 152, an image data conversion unit 160 and a render... | 11/21/2006 |
| 7131732 | Projector apparatus, inclination angle obtaining method, and projection image correction method In a projector to which the present invention is applied, a distance sensor measures distances between the projector and a plurality of points on a screen. An angle calculation unit obtains a formula representing a screen surface, based on plural pieces of distance ... | 11/07/2006 |
| 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 |
| 7102302 | Waveform generator for controlling an electron beam in a cathode ray tube A parabola generator for providing dynamic correction includes a capacitor source of a parabolic input signal at a frequency related to a horizontal deflection frequency coupled to a first terminal of the capacitor. A diode switch is coupled to a voltage at a refere... | 09/05/2006 |
| 7093940 | Adjustment in the amount of projected image distortion correction An exemplary aspect of the invention can provide a method for easily adjusting the distortion of a projected image. In adjusting the amount of distortion correction, values of the amount of distortion correction for a desired outline form to be formed based on desir... | 08/22/2006 |
| 7090361 | Bundled light based alignment and maintenance tool for projection systems The present invention relates to projection systems, more particularly to a method for visualising test pattern grids in such a projection system. An array of adjustable, directed light sources is described, which is to be used as a test pattern generator for... | 08/15/2006 |
| 7092045 | Projection-type display apparatus In measuring the angle of inclination of a liquid crystal projector with respect to the screen for automatically adjusting a trapezoidal distortion, the calculation of the angle of inclination by determining the distance from the screen using a distance sensor conve... | 08/15/2006 |
| 7071636 | Scanning circuit of electron tube displays The invention concerns a control circuit for an electron tube display comprising a deflection coil, the deflection coil being part of a scanning circuit and being coupled to a coil of a transformer powering a high voltage generator used to accelerate an electron bea... | 07/04/2006 |
| 7061552 | Method and apparatus to perform automatic digital convergence A method and apparatus for performing autoconvergence is described. An image having a first aspect ratio and a plurality of sides is received. The image is displayed on a display having a second aspect ratio and at least one sensor corresponding to each side of the ... | 06/13/2006 |
| 7061192 | Switching-type vertical deflection output circuit A switching-type vertical deflection output circuit comprises: an output-stage circuit constituted of first and second diodes and first and second switching elements, a smoothing circuit, a vertical deflection coil, a reference vertical sawtooth voltage generation u... | 06/13/2006 |
| 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 |
| 7014323 | Image processing system, projector, program, information storage medium and image processing method To provide an image processing system and the like which can perform an image distortion correction and focus adjustment approximately at the same time without changing a projecting position intended by a user, a projector includes: a distortion correcting section w... | 03/21/2006 |
| 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 |
| 6993207 | Method and apparatus for electronic image processing A method and apparatus for electronic image processing are described. One embodiment includes a method of resizing an electronic image that includes image data in two dimensions. The method includes memory-to-memory processing with separable x and y processing. Proc... | 01/31/2006 |
| 6992803 | RGB primary color point identification system and method A system and method for identifying primary color chromaticity coordinates of a red, green and blue light sources includes a tristimulus filter the receives the combined light generated by the light sources. The light sources are preferably a group of red, green and... | 01/31/2006 |
| 6989872 | Image distortion correcting device and image distortion correcting method A write PLL circuit generates a write clock signal for writing a video signal into a line memory. A readout PLL circuit generates a read clock signal for reading out the video signal stored in the line memory. An inner pincushion distortion correction voltage genera... | 01/24/2006 |
| 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 |
