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| Number | Title | Issue Date |
| 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 |
| 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 |
| 7141942 | Digital device for correcting the image formed on the screen of a cathode ray tube Device for correcting the line and/or frame fields of a deflector for cathode ray tube comprising: a current sensor for evaluating the value of a line current Il a series of comparators intended to compare the value of the line current Il w... | 11/28/2006 |
| 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 |
| 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 |
| 6972807 | Projection television and convergence control method thereof A projection television and a convergence control method thereof are provided. The projection television, which magnifies images displayed on cathode ray tubes (CRTs) for the colors red, green, and blue using lenses and projects the magnified images onto a screen, i... | 12/06/2005 |
| 6946770 | Electric motor In an electric motor having a brush holding portion for holding a brush and a pigtail holding means for holding a pigtail connected to the brush, on a holder surface of a brush holder, the pigtail holding means holds the pigtail in both a lateral direction along the... | 09/20/2005 |
| 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 |
| 6704056 | Horizontal deflection circuit and television receiver A video signal conversion part of a horizontal deflection circuit deletes a prescribed number of horizontal scanning lines from a vertical blanking interval of an input video signal and assigns a time corresponding to the deleted horizontal scanning lines... | 03/09/2004 |
| 6580233 | Cathode ray tube and intensity controlling method Disclosed is a cathode ray tube and a intensity controlling method achieving a reduced amount of factors for correcting intensity prepared and capable of performing proper intensity control so that the joint portion of split picture planes is inconspicuou... | 06/17/2003 |
| 6512339 | CRT display device In a CRT display device including a CRT (MM tube) having brightness higher than that in the background-art CRT, it is an object of the present invention to improve contrast and prevent conspicuous recognition of noises. A video signal modulation circuit (... | 01/28/2003 |
| 6483262 | Apparatus and method for ring spline convergence correction An apparatus and method for ring spline convergence correction for accurately affecting convergence at the outermost portion of a screen using ring spline interpolation are provided. Convergence correction data between seed data is output through an opera... | 11/19/2002 |
| 6437522 | Method for controlling digital dynamic convergence and system thereof The invention and method enable the astigmatism correction at each crossing point of a cross hatch pattern, thereby making high-resolution display possible. An appropriate voltage or current for controlling the magnetic field adjusting coils are generated... | 08/20/2002 |
| 6404146 | Method and system for providing two-dimensional color convergence correction A method and system for providing two-dimensional convergence correction for a color cathode ray tube (CRT) is disclosed. The CRT displays an input video signal comprising a stream of video scan lines which include red, green and blue color signals that a... | 06/11/2002 |
| 6373535 | Apparatus and method for adjusting convergence utilizing spine interpolation There is provided a convergence adjusting apparatus and method using spline interpolation in a projection image display device. In the convergence adjusting apparatus, a controller calculates the unknown coefficients of a cubic spline interpolation polyno... | 04/16/2002 |
| 6292235 | Distortion correction system with switchable digital filter A switchable digital filter interpolates distortion correction values. The distortion correction values together with interpolated distortion correction values are supplied as an output. Proper operation of the digital filter is disturbed by transient sig... | 09/18/2001 |
| 6208092 | Apparatus and method for digital deflection processing A digital deflection processing apparatus and method for a cathode ray tube are suitable for digitally and programmably correcting distortion in the cathode ray tube. The apparatus includes a synchronous signal and clock signal generating portion for gene... | 03/27/2001 |
| 6097447 | Digital deflection control system in projection TV A digital deflection control system in a projection TV is provided which digitally integrates the configuration for converting the digital horizontal deflection signal outputted from the DCS into an analog signal to be applied to the deflection coil as an... | 08/01/2000 |
| 6072544 | Method for obtaining signals in electronic devices by means of interpolation between interpolation point values A method is proposed for obtaining signals in electronic devices by means of interpolation between interpolation point values (W0 to W12), the interpolation point values (W0 to W12) being distributed linearly over a region. A number of interpolation value... | 06/06/2000 |
| 5793447 | Digital convergence apparatus A field memory stores convergence adjusting data which corresponds to a plurality of points on a display screen. An interpolation calculation circuit creates interpolation convergence adjusting data for correction points located between adjacent adjusting... | 08/11/1998 |
| 5790210 | Apparatus and method for digital convergence correction Among the total sampling points for digital convergence, a portion are selected as seed points. Correction data of each of the selected seed points is efficiently stored in a first memory. The correction data of the sampling points which are not stored is... | 08/04/1998 |
| 5694181 | Digital convergence correcting circuit A digital convergence correcting circuit for digitally correcting a convergence of R, G and B, which includes a memory for storing only seed data and a convergence correcting part for interpolating and latching the stored seed data with 16 points of sampl... | 12/02/1997 |
| 5537159 | Interpolation method and apparatus for improving registration adjustment in a projection television The nonlinear, deflection waveform used improve registration in a three picture tube projection television system is produced using interpolation of stored data setting points by first performing a reduced number of high-order interpolation calculations u... | 07/16/1996 |
| 5506481 | Registration error correction device A device for digital convergence correction of raster distortion correction of a picture displayed on a screen of a display device using a cathode-ray tube, in which scanning lines include a first class of scanning lines, called correction scanning lines,... | 04/09/1996 |
| 5463427 | Dynamic focusing device for cathode ray tube A dynamic focusing device for cathode ray tubes comprising a crosshatch pattern generator for providing a surface of cathode ray tubes with a crosshatch pattern indicating an adjustment point at which focusing control is carried out. The system uses corre... | 10/31/1995 |
| 5430357 | Uniformity correction signal generating apparatus for display image A uniformity correction signal generating apparatus includes a horizontal address signal generating unit and a vertical address signal generating unit for generating address signals (X) and (Y, y) having one-to-one correspondence to a position on a displa... | 07/04/1995 |
| 5398083 | Convergence correction apparatus for use in a color display A signal generating apparatus comprises: a scanning-line number detector (2) for detecting the number of scanning lines with receipt of a sync signal; a convergence memory (3) for storing convergence correction data; an on-screen display memory (5) for st... | 03/14/1995 |
| 5382984 | Digital convergence correction apparatus for color television receiver with cursor on screen A digital convergence apparatus detects the presence/absence, frequency and the number of scanning lines of inputted synchronizing signals, performs an interpolation between adjusting points corresponding to the detection signal to prepare a correction da... | 01/17/1995 |
| 5345280 | Digital convergence correction system and method for preparing correction data A digital convergence correction system and a method of preparing a convergence correction data used for an image display unit, including at least one cathode ray tube, are disclosed. Correction data at correction points at predetermined between adjusting... | 09/06/1994 |
| 5274307 | Single IC for CRT display control waveform generation A single IC chip, eight channel, correction waveform generator for CRT displays is disclosed. Each channel may output a different waveform to correct a different form of raster distortion. A correction waveform is developed for each type of display distor... | 12/28/1993 |
| 5216497 | Digital convergence apparatus including an extrapolating circuit A digital convergence apparatus detects the presence/absence, frequency and the number of scanning lines of inputted synchronizing signals, performs an interpolation between adjusting points corresponding to the detection signal to prepare a correction da... | 06/01/1993 |
| 5200815 | Convergence correction apparatus for a video projection system An image correction apparatus in which adjustment of a projector unit for widening projection with a plurality of projector tubes can be eliminated by setting specifications of the projecting optical system and by automatically calculating converging angl... | 04/06/1993 |
| 5194783 | Display apparatus based on a digital convergence scheme A digital convergence correction circuit for a CRT display unit deals with the problem of an excessive calculation time of the microprocessor expended for the vertical interpolation by using at least two pieces of ROM (read only memory) devices connected ... | 03/16/1993 |
| 4980614 | Convergence correction circuit A convergence correction circuit according to the present invention has a phased locked loop including a programmable counter. The programmable counter has programmable count start and end points. The output of the programmable counter is supplied to a me... | 12/25/1990 |
| 4977355 | Convergence control system A convergence control system for a television apparatus, for example a projection television, comprises: a plurality of channels, each channel having a digital memory for storing a set of grid coordinate values defining a convergence correction grid; and,... | 12/11/1990 |
| 4935674 | Digitally controlled convergence system A multi-channel, multiple deflection waveform generator for a convergence control system and the like comprises an analog circuit source for a plurality of basic waveforms and a basic waveform processor for each of a plurality of channels. Each of the cha... | 06/19/1990 |
| 4871948 | Memory mapped deflection correction system A memory mapped deflection correction system for use in correcting misconvergence in color CRTs. The invention utilizes predetermined convergence values by storing these values in an onboard memory. Apparatus for spatial domain interpolation interpolates ... | 10/03/1989 |
| 4687973 | Digital waveform generator In a cathode ray tube display system, correction factors for X and Y position, astigmatism, focus and shading are recorded for preselected locations in digital memory circuits. Those correction factors bordering the actual beam position are selected and a... | 08/18/1987 |
| 4682085 | Gullwing distortion corrected deflection circuitry for a square-planar picture tube Line and field deflection circuits generate line and field deflection currents in respective line and field deflection windings to scan a raster on the phosphor screen of a square-planar picture tube having an aspherical faceplate. The asphericity of the ... | 07/21/1987 |
