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Match Document Document Title
6924590 Color picture tube device with distortion correction coils  
A color picture tube device has a funnel glass, a pair of horizontal deflection coils, an insulating frame, and a pair of vertical deflection coils. The pair of horizontal deflection coils are...
6586893 Convergence correction device for electron beams in color picture tube and process of using  
A device for correcting residual mis-convergence errors in a color cathode ray tube, the tube including a narrow-necked section, located at the rear thereof, in which electron guns mounted therein...
6501238 Apparatus for correcting mis-convergence and geometric distortion in deflection yoke using variable resistance  
The present invention relates to a deflection yoke, and in particular, to an apparatus for correcting a mis-convergence and geometric distortion in a deflection yoke using a variable resistance,...
6498435 CRT display device to suppress electromagnetic radiation therefrom  
To construct a CRT display device capable of effectively suppressing unwanted radiation of electromagnetic waves occurring as a result of horizontal deflection or vertical deflection. A correction...
6380699 Color display tube device  
A first magnet that generates a magnetic field having the same polarity as that generated by a vertical deflection coil during a deflection toward the upper side is provided on a phosphor screen...
6359397 Deflection yoke and color cathode ray tube receiver using same  
In a deflection yoke for use in a color cathode ray tube receiver, two sets of sextuple pole coils formed of bifilar windings are disposed around the orbits of three electron beams emitted from an...
6291948 Image distortion correction circuit  
An image distortion correction circuit is provided in which a horizontal deflection current (IH) flows through horizontal correction coils (L1, L2) and a vertical deflection current (IV) flows...
6268705 Raster demodulation apparatus and method  
Raster demodulation apparatus for a raster-scanned cathode ray tube display comprises control means (400) for varying the shape of at least one scanned electron beam spot (661-663) in a direction...
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,...
5493179 Image display apparatus, computer apparatus, computer system equipped with both of them and control method of computer system  
A computer system executing a degaussing operation of a display monitor, an input-prohibiting/permitting operation of a display-adjusting key and a shifting operation to a waiting state is...
5350967 Inline electron gun with negative astigmatism beam forming and dynamic quadrupole main lens  
In an inline electron gun for use in a color cathode ray tube (CRT), a fixed, or static, electrostatic quadrupole in the low voltage beam forming region (BFR) exerts a negative astigmatism on the...
5177412 Color cathode ray tube apparatus  
A deflecting unit of a color cathode ray tube is constituted by a main deflecting section whose deflecting center is located on a phosphor screen side from an optimal deflecting center of the color...
5172035 Convergence system  
A system for generating magnetic fields to converge a plurality of electron beams in a cathode-ray tube including at least one convergence yoke having a core with a ring-shaped outer periphery and...
4864195 Color display system with dynamically varied beam spacing  
The improved color display system includes a cathode-ray tube and a magnetic deflection yoke positioned on the tube. The tube includes a faceplate having a phosphor screen thereon; a shadow mask...
4820958 Color cathode ray tube device  
Three electron beams are generated so that they are arranged in-line in a horizontal plane to impinge through a shadow mask on a phosphor screen consisting of red, green and blue phosphors. These...
4725763 Convergence correcting device capable of coma correction for use in a cathode ray tube having in-line electron guns  
A convergence correcting device for correcting mis-convergence of a cathode ray tube having in-line electron guns and, at the same time, correcting coma at the top and bottom of the screen, the...
4719391 Convergence circuit  
The convergence circuit has the bridge type rectifying circuit and the first potentiometer parallel-connected to this rectifying circuit and having the slide which is connected to the output...
4706115 Geometry adjustment circuit for a color video projector producing vertical amplitude, vertical linearity and horizontal trapezoid correction signals from a single user-controlled signal  
A geometry adjustment device for a color video projector having three monochrome tubes each projecting an image of a given color on a screen, comprising a geometry correction circuit adjustable by...
4704564 Convergence correction apparatus  
A convergence correction apparatus comprises a pair of horizontal deflecting coils and a pair of vertical deflecting coils constituting a deflection yoke of a self-convergence system color picture...
4662853 Method of manufacturing a color display tube and device for carrying out said method  
A method of and a device for use in manufacturing a color display tube in which magnetic poles are provided in or around the neck (4) of the tube envelope (1) and around the paths of the electron...
4641062 Method and apparatus for adjusting the static convergence and purity of color television tubes  
An apparatus for adjusting the static convergence and/or the purity of a color television tube particularly of the kind having a perforated mask. A magnetizable ring encircles the neck of the tube....
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...
4551657 Format reconfigurable CRT display  
A CRT display is provided with a multiple-pole, double-throw switching mechanism, which in conjunction with alternate circuitry provides a means for easily reconfiguring the CRT display...
4547707 Deflection yoke apparatus  
The deflection yoke apparatus comprises the deflection yoke and the correction coil device which is fitted to the deflection yoke. The deflection yoke is provided with a pair of horizontal...
4494047 Convergence device for color-producing cathode ray tube  
An electron beam convergence device is provided for a cathode ray tube of the type including an electron beam gun for developing three electron beams disposed on the screen in linear array. First...
4227122 Convergence device for projection type color television system  
In a convergence device for a three primary-color projection type color television system with three cathode-ray tubes, it is known to use two separate cores respectively for dynamic and static...
4220897 Method of manufacturing a color display tube and color display tube manufactured according to said method  
A ring is provided to correct the convergence, color purity and frame errors of a color display tube which ring is magnetized as a multipole and which is secured in or around the tube neck and...
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...
4201932 Color purity adjusting method  
To adjust for color purity for a cathode ray tube, an auxiliary magnetic field magnetizes metallic components including the metal shadowmask. A remanent magnetic field is created upon removal of...
4138628 Magnetizing method for use with a cathode ray tube  
A magnetic material to be located adjacent a neck portion of a cathode ray tube includes magnetized regions for producing an electron beam moving magnetic field for moving at least one electron...
RE29740 Color cathode ray tube of the plural beam, single electron gun type  
A color cathode ray tube preferably of the single gun, plural beam type wherein the beams originate on a horizontal or vertical straight line and are directed into a field produced by a...
4027219 Device for displaying color television images  
A color television display tube comprising at least eight correction coils, arranged in one plane about the tube neck, for controlling the static convergence and possibly other aspects such as...
3935506 Device for radial, static and dynamic convergence of electron beams in a colour television display tube  
Thus far a substantial amount of energy was required for the two coils for the dynamic line frequency convergence in a device for radial, static and dynamic convergence. So as to improve this...
3930185 Display system with simplified convergence  
A large-screen wide-deflection angle color picture tube utilizes three coplanar electron beams. Convergence of horizontal lines on the picture tube viewing screen is accomplished by positioning a...
3898520 Deflection coils and system having two quadripolar fields at a forty five degree angle with respect to each other  
A deflection coil system in which two quadripolar field systems are produced in the deflection plane, namely one with its polar axes in the deflection directions and one with its polar axes along...
3894267 Convergence correction device  
A convergence correction device comprises a horizontal convergence correction coil; a vertical convergence correction coil; a means for providing the horizontal and vertical convergence correction...
3891889 Color convergence apparatus for a color television tube  
The convergence coils of a convergence yoke are provided components of current which are related to currents in a deflection yoke.
3887833 Color purity adjusting device for a color picture tube  
A color purity adjusting device for a color picture tube, provided with one or more types of correcting coils which are wound on the outer periphery of the color picture tube in order to correct...
3803444 TELEVISION DISPLAY APPARATUS EMPLOYING CONVERGENCE CORRECTION  
Colour television display apparatus using substantially non-anisotropic astigmatic deflection coils resulting in the convergence along the axes and in the corners of the display screen being...
3789258 ELECTRON BEAM AND DEFLECTION YOKE ALIGNMENT FOR PRODUCING CONVERGENCE OF PLURAL IN-LINE BEAMS  
In a color television display system in which a plurality of horizontal in-line electron beams are directed toward color phosphor elements of a color picture tube, substantial convergence of the...
3717788 CATHODE RAY TUBE ARRANGEMENT UTILIZING MAGNETIC SHUNTS FOR CONTROLLING COLOR REGISTRATION  
A control apparatus for a cathode ray tube of the shadow mask type has magnetic shunts movable in field-distorting proximity to electromagnets provided to influence magnetically the pole pieces...
3700954 COLOR PICTURE TUBE DEVICE  
A color picture tube device having a "blue" convergence pole piece and a pair of "red" and "green" convergence pole pieces provided therein, wherein the "red" and "green" convergence pole pieces...
3619687 COLOR TV TUBE HAVING CURVED CONVERGENCE DEFLECTION PLATES  
In a color picture tube of the single-gun, plural-beam type in which a central beam and two side beams originate in a common plane and are all made to pass through the center of an electron lens...
3617963 TEMPERATURE-COMPENSATED STATIC CONVERGENCE APPARATUS  
A temperature-compensated static convergence apparatus for establishing and maintaining a substantially constant magnetic flux field across an electron beam path in a tricolor cathode-ray tube has...
3560793 COLOR TELEVISION CONVERGENCE SYSTEM  
The convergence correction device for three-gun according to the invention is of the type comprising, for corrections at line and field period, for each red or green gun, a single magnetic circuit...
3553523 CONVERGENCE MEANS FOR PLURAL IN-LINE BEAM CATHODE RAY TUBE  
Horizontal convergence means for a plural in-line beam cathode ray tube wherein the horizontal static and dynamic convergences are accomplished by independently adjustable flux densities in two...
3500114 CONVERGENCE SYSTEM FOR A COLOR PICTURE TUBE  
3492526 DYNAMIC CONVERGENCE FOR PLURAL BEAM CATHODE-RAY TUBE  
3467881 COLOR PICTURE TUBE  
3462638 ELECTRON BEAM CORRECTION APPARATUS FOR COLOR PICTURE TUBE  
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