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7612342 |
Very bright scintillators
The present application discloses methods and devices for increasing the light output of a scintillator. Using the methods of the present disclosure, a very high intensity electric field is applied...
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7573046 |
Thermal field emission electron gun with reduced arcing
One embodiment relates to a thermal field emission electron gun. The electron gun includes a high-vacuum chamber, a thermal field emission cathode including a filament and a tip, a suppressor...
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7187345 |
Image forming method and charged particle beam apparatus
An image forming method and a charged particle beam apparatus suitable for suppressing the inclination of charging when scanning a two-dimensional area with a charged particle beam. A third...
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6690339 |
Method and circuit arrangement for controlling the operating point of a cathode ray tube
A method and a circuit arrangement for controlling the operating point of a cathode ray tube ( 3 ) for use in image technology applications. A video signal ( 1 ) is supplied to both the tube ( 3 )...
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6624578 |
Cathode ray tube having multiple field emission cathodes
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...
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6614189 |
Funnel for color CRT
A color CRT having a body portion coupled to a panel, a neck portion in which an electron gun is installed and a yoke portion formed to be connected between the body portion and the neck portion...
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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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6465943 |
Winding apparatus and winding method of deflection coil, and deflection yoke thereby
Openings which are formed by dividing pins, are formed on a side section of a horizontal deflection coil within a range of 20 to 35% of a length of the horizontal deflection coil from a larger...
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6335594 |
Frame assembly in flat cathode ray tube
Frame assembly in a flat cathode ray tube, the flat cathode ray tube including a panel glass 1 having a fluorescent material coated on an inside surface, a funnel glass 2 fixed to rear of the...
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H002010 |
Double cusp gyro gun
A gyrotron gun that generates gyrating electron beams in a controllable manner suitable for use in a wide range of gyro-amplifiers and gyro-oscillators is disclosed. The gyrotron comprises first...
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6313831 |
Device for synchronizing a power drive signal of a monitor and a method therefor
A device for synchronizing a power drive signal of a monitor, and a method therefor. The device comprises a central processing unit to receive a horizontal synchronization signal outputted from a...
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6262543 |
Oscilloscope intensity regulation apparatus
An oscilloscope intensity regulation apparatus is disclosed. The oscilloscope displays wave-forms with the regulated intensity in spite of various wave-form repetition rates or sweep ranges. The...
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6242863 |
Spot killer circuit
A signal for executing a spot killer operation is generated when power is turned OFF, and the signal for the spot killer operation is generated in the power ON state based on a control signal. By...
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6211908 |
Television apparatus with supplementary kinescope blanking and spot burn protection circuitry
Supplementary grid blanking and spot burn protection are provided in a receiver/monitor (10) by a grid bias control circuit (50) including a blanking signal generator (60) that produces a blanking...
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6211629 |
Cut-off level setting
The cut-off level (Vcod) of a drive signal (Vd) of a cathode ray tube (3) is (Ib1, Ib2) occurring at these two levels (Vd1, Vd2).
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5994841 |
Circuit for biasing display device by compensating for a varying leakage current
A circuit apparatus and method is disclosed for determining the actual beam current of a display device having at least one cathode and that actual beam current is used to both correctly bias a...
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5793448 |
Cathode ray tube packages
A cathode ray tube package includes a cathode ray tube assembly and a housing assembly including a deflection coil and/or at least one focus coil. The cathode ray tube assembly includes a collar...
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5786668 |
Electromagnetic field shielding circuit for a display
An electromagnetic field shielding circuit is disclosed. The circuit comprises a phrase inverting circuit, coupled to a turn in the secondary windings, for generating an inverted phase with respect...
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5747933 |
Moire interference detection for raster-scanned cathode ray tube displays
A Moire interference detection apparatus for a raster-scanned cathode ray tube display is provided. The apparatus comprises a band-pass filter for generating an output signal in response to a...
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5714843 |
CRT spot killer circuit responsive to loss of vertical synchronizing signal
An improved spot elimination circuit for a monitor capable of Display Power Management Signaling function prevents an occurrence of a focused beam spot from the phosphor screen of a cathode ray...
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5714842 |
Automatic cutoff control for a DC coupled CRT video drive
The present invention, generally speaking, provides for automatic cutoff control in a DC coupled CRT video drive using a low DC supply voltage and circuitry that is lower in power consumption than...
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5712532 |
Scalable CRT display device and phase synchronous circuit for use in display device
A CRT display device capable of displaying a signal from the existing image signal source, in which a vertical frequency is approximately fixed and a horizontal frequency is widely distributed...
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5705891 |
Power supply for reducing the power consumption of digital oscilloscope
In a digital oscilloscope for indicating an input signal waveform on a display, all or part of the circuits which constitute the oscilloscope are de-energized in accordance with at least one of an...
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5682083 |
Spot removing circuit for a CRT with grid control means
A spot removing circuit for a display device is disclosed. The spot removing circuit comprises a rectifying and smoothing portion for rectifying and smoothing the voltage outputted from a flyback...
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5675219 |
Degaussing circuit for wide-range ac
An automatic degaussing circuit provides a video display apparatus with a degaussing capability over a wide range of ac mains sources. An ac mains source is coupled to a degaussing coil by a series...
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5672939 |
Moire control of a color display device
The present invention provides a horizontal (H) position modulator circuit for adjusting the horizontal impingement location of the electronic beam of a predetermined scan line and a vertical (V)...
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5656890 |
High-voltage stabilizer circuit for a monitor
A high-voltage stabilizer circuit for a monitor which stabilizes its output voltage by reducing the overshoot of the output voltage occurring when the power is on. According to the circuit, the...
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5616988 |
High energy-saving circuit for a display apparatus
A high energy-saving circuit for a display apparatus controls turn on and/or off of an AC voltage supply terminal by the simple circuitry of a sensor, an operation controller and an output unit for...
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5453661 |
Thin film ferroelectric flat panel display devices, and methods for operating and fabricating same
A flat panel display includes a ferroelectric thin film between first and second spaced apart electrodes. The ferroelectric thin film emits electrons upon application of a predetermined voltage...
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5418424 |
Vacuum ultraviolet light source utilizing rare gas scintillation amplification sustained by photon positive feedback
A source of light in the vacuum ultraviolet (VUV) spectral region includes a reflective UV-sensitive photocathode supported in spaced parallel relationship with a mesh electrode within a rare gas...
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5218270 |
Method and a coupling for decreasing the detrimental radiation caused by a cathode-ray tube
The object of the disclosure is a method and a coupling for decreasing the alternating current field produced by a cathode-ray tube in the environment. The said field or radiation is at least...
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5177402 |
Arc suppressor for electron gun
An arc suppressor is provided for an electron gun of the type used e.g. in semiconductor lithography equipment. The arc suppressor prevents damaging emission properties of the electron gun either...
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4980605 |
Oscilloscope triggering control circuit
A triggering control circuit varies a holdoff period for one sweep cycle whereby to lock triggering to a different, selected event viewable on an oscilloscope.
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4886999 |
Cathode ray tube apparatus with quadrupole electrode structure
A cathode ray tube apparatus comprises three cathodes arranged in line with each other in a first direction for emission of respective electron beams therefrom, a focusing electrode having first to...
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4859915 |
Line deflection circuit with dynamic S correction
In a line deflection circuit including an "S"0 correction capacitor in series with the deflection winding a second "S" capacitor is inserted in series with the first one, and there is impressed a...
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4858015 |
Video display driver coupling circuit
A video signal from a low impendance output of an amplifier device is conveyed to an image display device via a coupling path including first and second series connected resistors and a high...
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4742270 |
Degaussing circuit with residual current cutoff
A degaussing circuit for a video display apparatus eliminates residual degaussing current flow during operation of the video display apparatus. A capacitor is connected between coil of the...
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4734620 |
Resonant degaussing apparatus
First and second capacitors are charged prior to a degaussing interval. A first switch couples the first capacitor to a degaussing coil to initiate the degaussing interval. The first capacitor and...
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4727288 |
Digital wave observation apparatus
Digital wave observation apparatus includes first and second A/D converters to convert input signals of first and second channels into corresponding first and second digital signals. First and...
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4707638 |
Luminance adjusting system for a flat matrix type cathode-ray tube
A flat matrix cathode-ray tube (CRT) in which the brightness of a display picture can be readily adjusted according to environmental brightness. In the flat matrix CRT, the grid electrodes are made...
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4642518 |
Installation of electron beam metalworking
An installation for electron beam metalworking comprises an electron gun (1), a transformer and rectifier system producing a rectified high voltage supplied to the gun, a vacuum tube (23) disposed...
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4621217 |
Anti-aliasing filter circuit for oscilloscopes
A digital storage oscilloscope is provided with an anti-aliasing filter circuit utilizing a first plurality of switchable analog filters that bandwidth limit frequencies greater than half the...
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4596942 |
Field emission type electron gun
A field emission type electron gun comprises a cathode, a plurality of anodes opposing in series to the cathode and a filament for heating the anodes, all being contained in a vacuum tube. The...
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4589032 |
Ultra low power video amplifier
A logic signal controlled switching video amplifier is disclosed having minimal power dissipation. By utilizing diode and transistor amplifier switching techniques, charging and discharging...
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4535270 |
Resonant degaussing without residual magnetism
A resonant degaussing circuit provides rapid recovery for use with computer monitors or video display apparatus where frequent movement of the display apparatus occurs. The degaussing circuit...
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4525652 |
Auxiliary-voltage source for supplying electric circuits which are at a high potential
In an auxiliary-voltage DC source for supplying an electric circuit and, more particularly, one at a high potential in an electron gun without an isolation transformer, the primary winding of a...
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4503357 |
Cathode-ray tube
A cathode-ray tube has in a neck section of a hermetically sealed, evacuated envelope an electron-gun mount assembly in which of a cathode for emitting an electron beam, a first grid electrode...
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4489253 |
Automatic degaussing circuit with switch mode power supply
A degaussing circuit for a color television receiver has a continuously energized switch mode power supply feeding a voltage doubler coupled to a resonating capacitor connected in series with a...
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4438366 |
Cathode-ray tube driving apparatus
An improved apparatus for driving a cathode-ray tube (CRT) with minimized power consumption is disclosed. In the apparatus, a voltage regulator element (a Zener diode) supplying a regulated voltage...
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