Class 315/369 - Target controls deflection circuit

Subclass of Class 315 - Electric lamp and discharge devices: systems
Definition: Subject matter wherein the cathode-ray tube includes a target,
No. of patents: 33
Last issue date: 07/17/2007

Number	Title	Issue Date
7245316	Method and system for maintaining even tube burn-in An arrangement for maintaining even tube burn-in. The arrangement identifies active and inactive display regions on a display unit when video content is displayed on the display unit. When inactive display regions are identified the arrangement monitors the duration...	07/17/2007
7227318	Deflection device for projection tube and projection tube apparatus A deflection device for a projection tube includes a main deflection device for generating a raster and an auxiliary deflection device for correcting a convergence. The auxiliary deflection device includes a toroidal auxiliary horizontal coil, a saddle-type auxiliar...	06/05/2007
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
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
6833679	Method for forming an image on a screen of a cathode ray tube Apparatus and method are provided for using a multi-element field emission cathode in a color cathode ray tube. The field emission cathode may have from four to ten field emission arrays linearly arranged. The arrays are preferably formed from carbon-based material....	12/21/2004
6525494	Electron gun for color cathode ray tube An electron gun for a color CRT includes a triode including cathodes for emitting electron beams, a control electrode, and a screen electrode, at least two focusing electrodes on the same axis of the triode portion for forming a quadrupole lens, and a fin...	02/25/2003
6456017	Electron gun for cathode ray tube An electron gun for a cathode ray tube has a cathode structure, a control electrode, a screen electrode, focusing electrodes, and a final accelerating electrode. R, G, and B electron apertures of one pair of the focusing electrodes face each other to form...	09/24/2002
6452346	Color display device with deflection means and a co-operating pair of means for influencing the distance between electron beams A color cathode ray tube has quadrupole elements which increase and decrease the distance between the electron beams as a function of the deflection. Two co-operating elements have their windings connected in series with each other to minimize dissipation...	09/17/2002
6437523	Deflection circuits coupled via a filter A secondary winding of a horizontal flyback transformer of a horizontal deflection circuit develops a horizontal retrace pulse voltage. A secondary winding of a second transformer is coupled in series with a vertical deflection coil of a vertical deflecti...	08/20/2002
6369498	Electron gun for addressing secondary emission targets A dual-gun, single neck CRT focuses two beams, with significantly differing energies, onto a secondary emission target while maintaining compatibility with a standard fourteen-rotation stem and achieving FTU in excess of 95%. A pair of Einzel guns (write ...	04/09/2002
6359398	Method to control CRT phosphor aging Methods and apparatus are provided for equally aging a cathode ray tube (CRT). A video input terminal is coupled to the CRT and receives an external video signal. Control circuitry is provided, which detects the aspect ratio of the signal and determines w...	03/19/2002
6351085	Color cathode ray tube display As described above, according to the present invention, there is provided a color CRT display having a one-beam electron gun for reproducing colors by sequentially switching respective chrominance signals, R, G, and B, supplied to the one-beam electron gu...	02/26/2002
6323606	Monitor deflection circuit A monitor deflection circuit includes a bipolar power transistor for applying power from a high voltage supply to a horizontal deflection coil. The monitor deflection circuit further includes a base drive circuit for selectively turning the bipolar power ...	11/27/2001
6288502	Horizontal position adjusting circuit for raster A horizontal position adjusting circuit for a raster includes a reference voltage outputting unit for outputting a reference voltage to enable a raster to be centered on a fluorescent screen; a reference voltage adjusting unit for varying an output voltag...	09/11/2001
6274989	Dynamic damping clamper arrangement associated with s-shaping capacitor A resistor-capacitor-diode clamp is coupled to an S-capacitance of a horizontal deflection circuit output stage for reducing ringing by causing critical damping. The supply voltage of the output stage varies at a vertical rate parabolic manner for modulat...	08/14/2001
6211628	System for controlling the position of an electron beam in a cathode ray tube and method thereof A system and method for controlling an electron beam in accordance with the present invention includes an electron gun, a cathode ray tube with a faceplate, a deflection drive, a pair of positioning electrodes, an electron beam controller, and a pair of c...	04/03/2001
6124686	Horizontal deflection circuit A horizontal deflection circuit is provided in which a large retrace pulse voltage applied to a horizontal deflection yoke can be taken to reduce the deflection current and which is capable of easily performing horizontal image size adjustment and distort...	09/26/2000
6124685	Method for correcting distortion of image displayed on display device, distortion detecting unit, distortion correcting unit and display device having such distortion correcting unit A method for correcting distortion of an image displayed on a screen of a display device. The method includes steps of taking a picture of a test pattern displayed on the screen of the display device in an adjusting state, extracting distortion informatio...	09/26/2000
6118232	Circuit for compensating deflection in a display unit without picture distortion A compensating circuit is for compensating distortion of a picture which is displayed on a display unit having a yoke. The compensating circuit controls a yoke current to compensate a picture distortion. The compensating circuit comprises a first generati...	09/12/2000
6081079	Horizontal deflection drive circuit using a plurality of FETs A horizontal deflection drive circuit using a plurality of FETs is provided, which includes a base drive current supply for receiving an oscillation pulse in a low level generated by an oscillation element, to perform switching operation, a P-channel FET ...	06/27/2000
5712691	Method and apparatus for area dependent dynamic blue de-focusing A method and projection television system for projecting images having a plurality of color components, includes a device for filtering a first color component signal from a composite signal to provide a filtered first color component signal. A defocusing...	01/27/1998
5428269	Methods and apparatus for improving cathode ray tube image quality A time-varying control signal is developed by a current sensor connecting the imaging screen and a closely proximate screen grid of a cathode ray tube as an imaging electron beam is operatively swept across the screen to produce images thereon. The contro...	06/27/1995
5361020	Methods and apparatus for improving cathode ray tube image quality A time-varying control signal is developed by a current sensor connecting the imaging screen and a closely proximate screen grid of a cathode ray tube as an imaging electron beam is operatively swept across the screen to produce images thereon. The contro...	11/01/1994
5168199	Horizontal linearity correction circuitry for cathode ray tube display An improved system for continuously detecting and correcting the display in a cathode ray tube for errors in size and linearity. The system employs a crystal oscillator as a reference frequency to determine absolute error which is represented as "size" on...	12/01/1992
5017842	Image display apparatus An image display apparatus which controls electron beams emitted from an electron source by electrodes having an arrangement of electron beam passage apertures and displays an image by irradiating the electron beams onto phosphors on a screen. The image d...	05/21/1991
4939413	Flat type cathode ray tube A flat type cathode ray tube. Electrode beams are vertically emitted from electron beam emitting sources along vertical scanning electrodes which have a strip-shaped configuration in horizontal direction and are insulated from each other and lined up in t...	07/03/1990
4636843	Deflection control apparatus for a beam index color television receiver Deflection control apparatus for a beam index color television receiver includes a phase-locked loop for synchronizing an oscillating signal with an index signal generated by an electron beam scanning index stripes on the screen of the cathode ray tube of...	01/13/1987
4635106	Beam index color cathode ray tube with color-identifying patterns of stripes disposed in beam run-in area of display surface A television receiver in which a plurality of picture-displaying fluorescent lines (3), which are disposed on a screen (2) as the display surface of a cathode ray-tube so as to extend in the horizontal direction (in the direction of the arrow X) as the be...	01/06/1987
4369396	Color cathode-ray tube apparatus with shadow mask In shadow mask color cathode-ray tube apparatus, the shadow mask is provided with slits or rows of slots extending from side to side of the mask and a line raster is constrained so that the lines of the raster are colinear with the slits, there being just...	01/18/1983
4322134	Electronic lens An coherent light optical system is described wherein a high frequency electrical signal modulates an optical signal. An electronic lens, whose optical properties may be easily controlled, results from control of the modulating signal. The principles of f...	03/30/1982
4321510	Electron beam system An electron source section including a first detecting sub-section and a first control sub-section and an image formation section including a second detecting sub-section and a second control sub-section are arranged in series. The first detecting sub-sec...	03/23/1982
4225880	Energy-efficient beam-index displays with programmable power supplies Programmable power supplies are made responsive to beam-index and timing signals in order to automatically control the size and position of the display on a cathode ray tube. The high voltage power supply is also made programmable, responsive to video sig...	09/30/1980
3968404	Arrangement for controlling the vertical deflection of a flying spot tube In the course of each horizontal blanking interval, the spot of the flying spot tube is deflected in the vertical direction causing an image of the spot to meet a perforation of the film in fixed space relationship with the film frame being scanned. A pul...	07/06/1976

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Class 315/369 - Target controls deflection circuit