Quotables
"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 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 |
| 6979944 | Display device shared between digital-to-analog converter for outputting convergence signal and dynamic focus signal Provided are a display device, and more particularly, a display device shared between a digital-to-analog converter for outputting a convergence signal and a digital-to-analog converter for outputting a dynamic focus signal, in a projection television using 3 cathod... | 12/27/2005 |
| 6922011 | Deflection system for cathode ray tubes The present invention relates to a display device comprising a cathode ray index tube (1) having a neck portion (1″) and a screen portion (1). The display device comprises an electron gun assembly (3) for generating a plurality of elect... | 07/26/2005 |
| 6580206 | Color display device with a deflection-dependent distance between outer beams A color display device having an electron gun, a display screen, a color selection electrode and a deflection unit. The distance between the electron beams in the x-direction is dynamically varied, whereby the distance in the deflection space decreases as... | 06/17/2003 |
| 5869923 | CRT with neck-gripping beam-correcting ferrite-ring assembly A rigid ferrite-containing ring and plastic holder are described for mounting on the neck of a color cathode ray tube (CRT) which ring is to be custom magnetized in order to provide correction of static convergence, color purity and/or frame errors in the... | 02/09/1999 |
| 5828189 | Process and apparatus for magnetizing a magnetic ring for static convergence correction in a CRT A process and apparatus are described for custom magnetizing a magnetic ferrite ring on the outside of the neck of a color cathode ray tube (CRT), in order to provide correction of convergence, color purity and frame errors in the CRT. The two step proces... | 10/27/1998 |
| 5473391 | Convergence displacement correcting device for projection-type image display apparatus and method thereof A projection-type image display apparatus, in which a correction raster shape correction circuit is supplied with a sawtoothed-shaped voltage changing in level in accordance with a static convergence regulation voltage for correcting respective raster sha... | 12/05/1995 |
| 5146411 | Computer-aided process for placement of CRT trim magnets A computer-aided process for calculating the orientation and strength of trim magnetic fields for a monochrome CRT uses a machine vision camera to establish the shape of the uncorrected raster. Using the distortion information and sensitivity mappings rep... | 09/08/1992 |
| 4642527 | In-line color picture tube apparatus with dynamic convergence correction device There is provided an in-line color picture tube apparatus with a dynamic convergence correction device. Dynamic convergence correction means is disposed between a self-convergence deflection yoke and a static convergence correction magnet assembly which a... | 02/10/1987 |
| 4588930 | Device for correcting an image on a picture tube having in-line electron guns and a coil assembly for the device In a deflecting yoke of an in-line type color picture tube, a pair of saturable reactors responsive to vertical deflection is connected to the horizontal deflecting coils so that horizontal deflection currents respectively flowing in two horizontal deflec... | 05/13/1986 |
| 4500816 | Convergence control apparatus for color cathode ray tube display systems An active convergence correction apparatus for a full color cathode ray tube display of the delta gun shadow mask type wherein the horizontal and vertical parabolic waveshape compensation signals are generated by squaring circuits responsive to the horizo... | 02/19/1985 |
| 4390815 | Apparatus for influencing electron beam movement An apparatus for influencing the movement of electron beams of a cathode ray tube comprises means for magnetizing a strip of magnetizable material disposed about the neck of the tube. The magnetizing means includes a pair of members each incorporating mag... | 06/28/1983 |
| 4211916 | Device for diagnosing microprogram computers The method for diagnosing microprogrammed computers consists of locating malfunctioning computer circuits with the aid of basic control data from which individual basic control words are selected under the control of diagnostic control data, and activatin... | 07/08/1980 |
| 4211960 | Method of manufacturing a static convergence unit, and a color display tube comprising a convergence unit manufactured according to the method The method according to the invention consists in the determination of data of the convergence errors of a color display tube, data being derived from the said determinations for determining the polarity and the intensity of magnetic poles of a structure.... | 07/08/1980 |
| 4105983 | Static convergence unit, and a color display tube comprising a convergence unit having permanent magnets An in-line CRT features a static convergence means. It has at most two permanent magnets in or around the tube neck before the deflection coils.... | 08/08/1978 |
