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6703787 |
Signal generation and correction circuit and method for correcting digital signals
A Signal generation and correction circuit with an LED diode (D1) and a photo-transistor (Q1) having corresponding inputs and outputs (d1e, d1a and q1e, q1a), as well as connecting lines (1, 2)...
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6544330 |
Bonded, walk-off compensated optical elements
A bonded, walk-off compensated crystal, for use with optical equipment, and methods of making optical components including same.
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6534920 |
Horizontal deflection circuit and bidirectional horizontal deflection apparatus
An amplitude control circuit controls the amplitude of a correction signal periodically changing in a parabolic form at vertical scanning intervals based on the level of an amplitude control signal...
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5939843 |
Adaptive convergence adjustment for multi-scan monitor
The present invention relates to a multi-frequency display system and method for providing color convergence. The system comprises a convergence circuit that is configured to receive a first set...
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5801768 |
Purity adjusting apparatus using beam position simulation
Adjustment of an electron beam landing position during thermal expansion of a shadow mask in a color cathode ray tube (CRT) on a production line of color television receivers is performed by...
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5189338 |
Photomultiplier tube having reduced tube length
A photomultiplier tube includes a tube, a focussing electrode unit formed with a photoelectron transmission hole whose center is positioned offset from a central axis of the tube and a dynode...
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5083849 |
Light signal sampling system
A sampling streak oscilloscope responsive to a light input signal stores charges on a CCD target by means of an electron beam rapidly scanned across a narrow dimension of the CCD target in...
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4999703 |
Automatic image correction method and apparatus for projectors utilizing cathode ray tubes
A system for automatically achieving convergence of the individual color images emitted by a color projector (11). The system employs a test pattern generator (71) which generates a number of test...
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4884011 |
Light-detecting device
A light-detecting device for converting a light to an electrical signal utilizes a charge multiplication function and has a stable gain.The light-detecting device comprises a photo-electric...
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4835602 |
Color projection television system with apparatus for correcting misconvergence and misgeometry which calculates coefficients of equations representing deflection correction waveforms
A projection television convergence method and apparatus allow rapid and simple correction of low-order misconvergence and misgeometry problems. A hybrid system employs digital programmable...
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4642529 |
Apparatus and method for measuring linewidth and convergence in a color cathode ray tube display system
Apparatus for providing precise convergence measurements of electron beams in a CRT display by sensing the displacement of brightness peaks as an array of phosphorescent regions are sequentially...
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4635095 |
Method for measuring the convergence of a three-gun shadow-mask cathode-ray tube and a device for the application of said method
Monochrome bar patterns approximately seven millimeters in width are produced on the screen of a three-color television picture tube by means of a video signal having a substantially Gaussian...
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4593308 |
Automatic correction of centering and convergence errors in CRT displays
An improved system for the automatic correction of centering and convergence errors in a cathode ray tube display is disclosed. The system includes a first masked light sensor (12) positioned on...
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4364079 |
Process of analysis of the convergence of a cathode-ray tube with three ganged guns and a device forming a pick-up allowing implementation of this process
A process of analysis of convergence along two orthogonal components of the three guns in a color television tube with ganged guns involves, for example, placing an analysis slit 20 in front of the...
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4291256 |
Alignment or correction of energy beam type displays
Multiple energy beams in a display, such as a color TV tube or computer terminal, can be accurately aligned or corrected using information acquired with a photodetector having a single sensitive...
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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...
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4126813 |
Direct view device
The invention includes an electron tube such as an image intensifier which utilizes a channel-type electron multiplier. The multipler is made of a perforated glass plate made in a manner such that...
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4095136 |
Image tube employing a microchannel electron multiplier
In an image tube, a microchannel electron multiplier plate is disposed between the photocathode and a cathodoluminescent output screen for multiplying the electron current of electron images....
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4035834 |
Beam landing indicator for color cathode ray tube
A system for quickly and easily making accurate purity and yoke adjustments of a color cathode ray tube of a television receiver utilizes a separate oscilloscope display of vector beam landing...
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3983437 |
Electromagnetic radiation detector
An electromagnetic radiation detector including a collimating window, a cathode member having a photoelectric emissive material surface angularly disposed to said window whereby radiation is...
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3969699 |
Image dissector with many apertures for Hadamard encoding
An improved image dissector camera tube system for improving the signal-to-noise ratio in which the aperture plate of the image dissector has a plurality of apertures, the apertures individually...
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3955117 |
Optical pulse demodulator
A fast scanning optical cathode ray tube with an array of electron multiplier output channels across the sweep path provides demodulation of short pulse code modulated optical signals. The cathode...
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3950669 |
Erasing method for storage tube employing raster scan
The time duration of an erasing cycle is shortened and "raster burn" is reduced by first applying potentials which result in a substantially uniform charge over the storage surface by means of...
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RE28773 |
Charge image storage method and apparatus
The information stored on the dielectric target of a bistable storage tube is read out nondestructively employing a pulsed electron beam. The electron beam is turned on for a period having a...
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3949264 |
Electronic storage tube target structure and method of operation
An electronic storage tube of the electron beam modulated type employing a target structure of the "coplanar grid" type in which the coplanar grid is a multilayered structure having at least one...
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3925702 |
Method and apparatus for improving the readout characteristics of electronic storage tubes
A method and apparatus for improving the readout characteristics of electronic storage tubes utilizing a stored potential pattern wherein a periodic varying voltage is applied to either the cathode...
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3914600 |
Electron image integration intensifier tube
An optical or photon image is converted by a photocathode to an electron ge. A semiconductor plate receives the electron image on a first side thereof. For an electronically controlled time, the...
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3887810 |
Photon-multiplier imaging system
A photo-imaging system having substantially increased sensitivity is described. Impinging photons are focused upon a photo-emissive cathode of an electron accelerating tube. The cathode comprises a...
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3883773 |
Device comprising a television camera tube
A device having a television camera tube in which an electron beam, moving under the influence of line and frame deflection means, scans the target plate, during scans to return the potential of...
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3875457 |
Field responsive photoluminescent display devices
Improved image storage and display devices of the type which includes a layer of phosphor material which is stimulated to emit light through photoluminescence. The intensity of emitted light is...
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3851205 |
JUNCTION TARGET MONOSCOPE
A signal display system having a visual display and a display signal generator in which a semiconductor junction target has a high conductivity P layer, a low conductivity N layer, and a surface...
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3842251 |
RADAR DATA MAP CORRELATOR
The phase or "chirped" video return of a synthetic aperture radar which carries two-dimensional information of target positions is modulated onto the "write" beam of a storage tube. The "read" beam...
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3841928 |
PRODUCTION OF SEMICONDUCTOR PHOTOELECTRIC CONVERSION TARGET
In the process for making semiconductor photoelectric conversion targets used in a vidicon comprising an N-type semiconductor wafer having an array of P-type regions in a surface thereof, and an...
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3838309 |
DIRECT VIEW STORAGE TUBE HAVING A LATERAL FIELD NEUTRALIZING ELECTRODE ADJACENT THE STORAGE GRID
A transmission type direct storage tube in which a lateral field neutralizer electrode is positioned adjacent the transmission storage electrode to confine the lateral effects of charge on the...
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3818262 |
TARGETS FOR TELEVISION PICKUP TUBES
An improved target for a television camera tube comprises a single layer of material with portions of the material treated to form a P-type region, while other portions may be treated to form a...
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3814979 |
SMOOTHING OPTICAL CATHODE RAY TUBE
An image dissector is combined with an optical cathode ray tube to provide detection and observation of very short duration low level pulses of light. The cathode ray tube includes a photocathode,...
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3814977 |
IMAGE STORAGE DEVICE
An electro-optic information storage device for converting an optical or electron image into an intensified optical output image and, by the process of optical feedback, continuously refreshing the...
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3809946 |
MULTIPLE FUNCTION VIDICON TUBE INCLUDING A TRANSMISSION GRID
An improved vidicon tube is produced by adding a transmission grid to a standard vidicon tube. The improved tube serves as an image buffer which is compatible with broadband and narrowband...
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3806756 |
IMAGE TUBE
An optical image is projected onto a planar surface of a photocathode that derives an electron beam replica of the image. A target electrode displaced relative to the photocathode so that it does...
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3803443 |
CHARGED PARTICLE BEAM SCANNING DEVICE WITH ELECTROSTATIC CONTROL
A plurality of control plates are sandwiched between a cathode and a target to control the flow of charged particles such as electrons and ions therebetween. Each control plate has a plurality of...
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3800276 |
ACOUSTIC IMAGE CONVERSION TUBE
1. An underwater acoustic device comprising in combination a substantially igid front wall member of sound transparent material, a rear wall member of piezoelectric material spaced back of said...
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3798494 |
NON-STORAGE ELECTRON MULTIPLIER OPERATION OF TRANSMISSION STORAGE TUBE
A method and apparatus is described for providing non-storage electron multiplier operation of transmission storage tubes and other cathode ray tubes employing a transmission mesh target and a...
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3798495 |
ELECTROOPTICAL CORRELATOR TUBE USING SECONDARY EMISSION MODULATION
An electron discharge device of the image orthicon type having a barrier mesh electrode member disposed adjacent to the target mesh electrode of the electron image section. Positive or negative...
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3796908 |
ELECTROOPTICAL CORRELATOR TUBE HAVING A REAR TARGET MESH ELECTRODE
An electron discharge device of the image orthicon type having a storage target member and adjacent target mesh electrode provided with a substantially similar mesh electrode on the opposing side...
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3790844 |
IMAGE COMPARISON TUBE AND METHOD OF COMPARING RADIATION IMAGES
An image comparison tube stores a first image on a storage electrode and projects a deflectable second image thereon to provide an output signal dependent upon the coincidence of the two images....
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3781838 |
PRODUCTS OF COMBUSTION DETECTOR
A products of combustion detector is provided wherein a spark-gap is exposed to the ambient atmosphere and a varying potential is applied thereto of a peak magnitude less than that required to...
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3775636 |
DIRECT VIEW IMAGING TUBE INCORPORATING VELOCITY SELECTION AND A REVERSE BIASED DIODE SENSING LAYER
A direct view imaging tube which incorporates a reversed biased diode array sensing structure for sensing input radiation to modulate a velocity selection type image section.
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3774236 |
IMAGE CONVERTER UTILIZING THE COMBINATION OF AN ELECTROSTATIC DEFLECTION FIELD AND A MAGNETIC FOCUSING FIELD
An image converter tube is provided wherein a pattern of radiation falling on a photoconductive target leaves a corresponding pattern of conductivity which is used to modulate a floodbeam which...
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3774066 |
INTERACTIVE-DISPLAY STORAGE CATHODE RAY TUBE
Modification of a display storage cathode ray tube that employs an electron beam for impingement on an insulating phosphor to switch the latter from an OFF state (low voltage) to its ON state (high...
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3767961 |
ARRANGEMENTS INCLUDING IMAGE INTENSIFIER DEVICES
An image intensifier arrangement is operated in a manner which allows observance of preselected events which occur during the occurrence of other events which may mask them. Normally the first...
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