Matches 1 - 50 out of 97 1 2 >


Match Document Document Title
6310434 Picture display device having an improved bandwidth  
A picture display device having a cathode which includes two electric current conductors between which a video signal is applied, for applying a video signal to the cathode to modulate an electron...
6175392 Method and apparatus for improving the color convergence of projection-based displays  
System and method for improving color convergence in projection display systems employs one or more mirror units disposed for reflecting light from the projection lens to a display screen, each...
6057883 Circuit for controlling the picture tube in a television receiver  
A circuit for controlling the picture tube in a television receiver. In order to generate a high peak white on the screen of the picture tube, it is desirable to drive the output amplifiers at full...
5793166 Image display device comprising a cathode ray tube  
An image display device (1) which includes a cathode ray tube is provided with a cathode system (2) for the emission of a plurality of electron beams (3) whereby a phosphor screen (4) is scanned in...
5777698 Apparatus for reducing moire interference in color cathode ray tubes  
An apparatus for reducing Moire interference in a color cathode ray tube produced due to inconsistent spacing of scanning lines with respect to the dot pitches of a shadow mask during the display...
5712538 CRT display device comprising a filter in the cathode modulator  
A phosphor screen in a display device is scanned by separate electron beams in order to generate images of different frequency content in one color in substantially the same part of the phosphor...
5592238 Field-sequential projection display  
A single-tube type projection display with high light efficiency includes phosphors of three primary colors formed on upper, middle and lower portions of a faceplate of a CRT. Images of three...
5418426 Picture tube having a plurality of guns  
It is known to provide a large screen area using a picture tube having a plurality of guns. The object is to provide a transition of continuous brightness, so that the partial picture transitions...
5337092 Image display apparatus  
The television apparatus of the present invention is a apparatus which displays an image corresponding to a television signal, where an image signal is received and, by use of the received image...
5257096 Monitor television receiver  
A monitor television receiver for displaying or supplying a color video output has a circuit for measuring the cathode currents of electron guns for three primary colors in a cathode-ray tube. A...
5214499 System for making raster location adjustments on a multi-color display screen  
A system for making location adjustments on a display screen raster having horizontal and vertical lines crossing at crossing points includes a cursor which is moveable to the crossing points. The...
5040058 Raster graphic helmet mountable display  
A helmet mountable display includes electronic apparatus for ultimately providing sweep lines of a full color raster graphic image and electromechanical apparatus for disposing the sweep lines to...
4954901 Television receiver with two electron beams simultaneously scanning along respective verticaly spaced apart lines  
A television receiver for providing a non-interlaced display of a received television signal intended for interlaced display includes a cathode ray tube having first and second cathodes, control...
4884874 Method of addressing display regions in an electron beam-addressed liquid crystal light valve  
An electron beam addressed liquid crystal light modulator or "valve" (10) includes a liquid crystasl cell (40) having a target surface (45) which a writing electron beam (60a) and an erasing...
4800433 Progressive scanning conversion system for television image display apparatus  
A progressive scanning conversion circuit for converting video signals corresponding to an original image from a predetermined format video signals having an increased scan line rate, the video...
4765717 Liquid crystal light valve with electrically switchable secondary electron collector electrode  
An electron beam addressed liquid crystal light modulator or "valve" includes a liquid crystal cell having a target surface which a writing electron beam and an erasing electron beam address to...
4763048 Method and circuit for controlling the operating point of a video amplifier  
When controlling the working point of video output stages in monitors, data display cathode ray tubes (CRTs) (10) and the like, in which the scanning raster is applied to the screen of the CRT...
4748497 Television receiver automatic color temperature adjusting system with start up control  
An automatic color temperature adjusting system for a television receiver which is capable of eliminating an unstable picture condition during the turn on transition period. The automatic color...
4723158 Method and apparatus for performing scan line diagnostic testing in a video monitor during a last-line overscan of a normal display raster  
A disclosed last-line overscan system and method allow for sampling of video display characteristics such as RGB cathode currents during each frame of displayed video for an underscanned video...
4692793 Circuit for blanking the video of a television set for a time after turn-on  
A color picture tube for displaying a color picture which has a signal supply that includes a plurality of primary color signal channels for supplying a plurality of primary color signals to the...
4686429 CRT color convergence measurement  
A computer controlled system for measuring convergence in a multi-electron beam color cathode ray tube (CRT) provides a high speed coarse search and fine search sequence for locating the position...
4679065 Automatic white control circuit for color television receiver  
A color television receiver with automatic reference white control circuit has negative feedback loops for automatically adjusting the amplitude of each cathode driving voltage of R, G and B...
4654712 High frequency wide bandwith video amplifier with high tracking linearity  
A wide bandwith video amplifier circuit with a high output DC voltage bias and which is capable of high tracking linearity. The video amplifier circuit comprises an AC pre-amplifier, a DC restorer...
4633299 Color temperature control circuit using saturation level detector  
A color television receiver is disclosed, which includes a circuit for detecting a color saturation level of a color from red, green and blue primary color signals or from color difference signals...
4631576 Nonuniformity correction system for color CRT display  
A system for the correction of nonuniformities in both color and brightness as provided for the correction of such nonuniformities in a color CRT display. The system employs correction signals...
4604647 Cathode ray tube driver circuit  
A driver circuit for a CRT is disclosed wherein opposite polarity control signals are derived from a single video color signal and are applied to the cathode and grid of an electron gun of the CRT...
4590463 Digital control of color in CRT display  
The color of a pixel produced on the face of a CRT is determined by the n bits of a hue/saturation digital input signal which is applied to a decoder to select one of 2n output lines of the...
4502073 Noise suppressing interface circuit in a kinescope bias control system  
An interface circuit in a kinescope bias control system includes a transistor with a base electrode coupled to the output of a kinescope drive amplifier in a television receiver, an emitter...
4494146 Wideband kinescope driver amplifier  
A kinescope driver amplifier comprises a resistive feedback network coupled from the output to the input of the amplifier. The feedback network includes first and second series resistor of mutually...
4449148 Image display apparatus  
A flat type display apparatus includes an electron beam source for emitting a row of a large number of electron beams, and a phosphor screen having a phosphor layer which emits light in response to...
4418359 Omnispectravision  
A system for providing a visual color display of multi-spectral and/or multi-sensor data particularly that provided by a trichroic infrared scanning system, which includes the assignment of visible...
4361850 Color television receiver with character display function  
A color television receiver has a decoder for producing red, green and blue driving currents which are applied to red, green and blue control circuits, respectively, for combining these three...
4348688 Multibeam cathode ray tube apparatus  
Multibeam cathode ray tube apparatus incorporates control circuits for maintaining the relative intensity of the beams over a range of settings of the brightness control. As applied to a three beam...
4347528 G2 Set-up circuit for a television receiver  
A circuit is disclosed for establishing proper video output voltages in a color television receiver prior to setting the receiver's G2 voltage. In the preferred embodiment, the circuit includes...
4346399 Color temperature control circuit  
A color temperature control circuit for a color television receiver having a color decoder circuit supplied with a composite video signal and for generating red, green and blue primary color...
4322742 Method and apparatus for improving the sharpness of a video picture  
A method and apparatus for improving the sharpness of a video picture displayed on the screen of a cathode ray tube. At least one electron beam scans the screen in line-scanning and vertical...
4322741 Image dividing system for use in television  
An image dividing system for use in television wherein the optical image of a subject is divided into parts and picked up by means of a plurality of exclusive image pickup tubes assigned thereto...
4285008 Color picture reproducing device  
A capacitor is provided between each cathode of a three-electron-gun color picture tube with three first grids earthed and each transistor amplifier for amplifying each primary color signal. The...
4277798 Automatic kinescope biasing system with increased interference immunity  
Apparatus is disclosed in a video signal processing system for automatically monitoring and controlling the blanking (black) current level of an image reproducing kinescope having cathode and grid...
4271247 Color picture tube with screen having light absorbing areas  
A tube of the shadow mask type having a line screen and a slit aperture mask wherein the slits are arranged in columns and the slits in each column are separated by web portions of the mask is...
4200882 Color television CRT beam current correction circuit  
Multi-gun color television display apparatus having for each gun an identical beam current reference level control system wherein the relative position of a reference level in the video signal and...
4196446 Television picture tube having enhanced resolution and color purity  
A color television receiver system has a cathode ray picture tube including an imaging faceplate having deposits of multi-color phosphor targets thereon. The tube includes a three-beam electron gun...
4193086 Convergence detecting device for color picture tube  
A pattern signal for sequentially displaying crisscross patterns of three primary colors of red, green and blue is supplied to a color picture tube. Two television cameras pick up the pattern...
4160995 Bias setting apparatus for use with television receivers  
A color television receiver having a circuitry for automatically adjusting the cut-off points of the electron guns, i.e. for adjusting the bias of each electron gun to make the guns responsive to...
4122485 Method and apparatus for simulating magnetic environment of television receivers  
A set of auxiliary deflection coils are placed on opposite sides of a multi-beam color television picture tube having a deflection yoke and color purity adjustment apparatus. The tube is operated...
4118731 Video amplifier with suppressed radio frequency radiation  
A wide bandwidth video amplifier suitable for driving a kinescope of a television receiver exhibits suppressed radio frequency (RF) harmonic radiation. The amplifier includes a transistor having a...
4110787 Combined blanking level and kinescope bias clamp for a television signal processing system  
In a video signal processing system including a kinescope for reproducing an image in response to an image representative video signal, a circuit for clamping a periodic blanking level of the video...
4082996 Video amplifier including an A-C coupled voltage follower output stage  
A video amplifier suitable for providing amplified image-representative signals to an image reproducing device having a capacitive input impedance component comprises a first wideband amplifier...
4070691 Stabilizing system for cathode ray tube  
The invention pertains to a video display apparatus which includes a cathode ray tube having at least one electron gun and means for deriving a source of excitatory voltage signal representative of...
4053927 Chrominance amplifier control circuit providing simultaneous adjustment of gain and DC level  
In a circuit for setting a chrominance signal controlling the emission of an electron beam in the picture tube of a color television receiver, the circuit including an amplifier connected to...
Matches 1 - 50 out of 97 1 2 >