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Match Document Document Title
8242701 LED light source adapter  
An LED assembly adapted to mount in a bayonet type socket of the type having a slotted casing comprising the negative terminal and a central pin comprising the positive terminal in which a...
7030908 Method and circuit for spot-killer control in cathode-ray tube  
Disclosed are a method and an apparatus for preventing appearance of a zigzag flush of light in a cathode-ray tube at the time of turning it off. A train of power-off control pulses are produced...
6563496 Cut-off adjusting apparatus  
A cut-off adjusting apparatus in which a signal source for detecting cathode current is not required, the cost can be reduced, the cathode current can be detected with high precision, and the...
6528958 Display device and cathode ray tube  
The invention relates to a display device comprising a cathode ray tube including an electron source and an electron beam guidance cavity having an entrance aperture and an exit aperture for...
6307335 Braun tube discharge apparatus  
A Braun tube discharge apparatus that includes a so-called spot killer function. In the apparatus, an operational amplifier included in a vertical IC receives a vertical ramp signal from a...
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...
6069660 Automatic black level stabilizing apparatus  
An apparatus for automatically stabilizing the black level of a displayed picture when (1) an automatic black level stabilizing function is OFF, (2) black level error occurs between at an ON state...
6046552 Spot eliminating circuit of an image display device  
A spot is prevented from occurring on the center portion of a cathode ray tube when electric power is turned off by using a voltage charged in a capacitor which are used for outputting a vertical...
6020693 Method for reducing residual spot in cathode ray tube  
A method is provided for reducing a residual spot on a cathode ray tube when a power supply is turned off. The method is executed by applying a holding voltage being no less than the value of the...
5914574 Stray emission reduction circuit  
The most popular method for reducing stray emission effects in a cathode ray tube is to install a bleeder resistor at the flyback transformer of the tube. Such a bleeder resistor is, however,...
5883669 Display device using electron beam and method of erasing display screen  
A device having a display device employing a cathode-ray tube and an electron beam includes an on-screen display memory for storing data used to display white on an entire screen of the...
5719735 Device and method for protecting a CRT screen  
A device and method for protecting a CRT screen. The device includes first and second amplifying circuits for amplifying a video signal input thereto and outputting an amplified signal; a buffer...
5652483 Discharging a picture display tube  
Method of discharging a picture display tube (3) in a picture display device, and picture display device provided with a picture display tube discharge circuit, in which the picture display tube...
5266870 Stray emission prevention circuit for cathode ray tube  
A stray emission prevention circuit for a system having a cathode ray tube including a charging and discharging section for applying a system power supply voltage upon power-on of the system to...
5142206 Slow turn-on in a deflection circuit  
A horizontal oscillator, responsive to an on/off control signal, generates an output signal that is coupled via a driver stage to a control terminal of a horizontal deflection output transistor....
5134492 Method and device for limiting the current of a cathode-ray tube during the frame return time  
A limiter device essentially includes a comparator connected to a capacitor charged by a current proportional to the beam current and short-circuited by pulses during one line just after the frame...
4532457 Television receiver standby circuit  
A deflection generator of a television receiver includes a trace switch that during normal mode of operation is switched at a deflection rate to generate scanning current in a deflection winding....
4338623 Video circuit with screen-burn-in protection  
To prevent display screen burn-in of a picture having, for example, bright lines or other picture components remaining stationary for a long period of time, a video circuit is examined to detect...
4016554 Raster display apparatus  
In a raster display device, such as a cathode-ray tube, in which the display is computed on-the-fly, such as in the raster vector generator type, when the computation of a line, or group of lines,...
3980925 Beam mislanding correcting system  
A system for compensating for mislanding of electron beams on the screen of a color cathode ray tube resulting from thermal expansion of a beam selecting structure in the tube which comprises...
3944880 Cathode ray tube device of preheated type  
A cathode ray tube device includes a cathode ray tube of which cathode is heated in a waiting state as well as a normal operating state to emit an electron beam. The emitted electron beam in the...
3895259 Instant-on filament circuit  
A solid-state television receiver includes a cathode ray tube having a heater filament coupled to the secondary winding of a filament transformer having a gap in the magnetic core. The primary...
3863096 SPOT KILLER NETWORK FOR CATHODE RAY TUBE  
The accelerator grid of the electron gun of the cathode ray tube of a television receiver, for example, is biased positive relative to the potential of the cathode of the tube by being connected...
3801856 INSTANT-ON CIRCUIT FOR A TELEVISION RECEIVER  
The instant-on circuit cooperates with a horizontal deflection system of the type utilizing two bi-directionally conductive switching means which serve respectively as trace and commutating...
3771011 APPARATUS FOR SWITCHING INPUTS TO A DEFLECTION SYSTEM  
A system for applying scan voltages to and removing said voltages from high power deflection amplifiers in a manner which avoids overloading and damage to the amplifier is shown. Means are...
3767963 HIGH VOLTAGE HOLD DOWN CIRCUIT  
In a horizontal deflection circuit utilizing a voltage multiplier to develop the kinescope ultor voltage, any open circuiting of the damper diode can cause the input signal to the voltage...
3706904 SWEEP HOLD-OFF CIRCUIT  
A circuit for use with an oscilloscope sweep circuit includes an integrator for producing a control signal that establishes a substantially fixed hold-off time between the arming and triggering of...
3629645 TELEVISION RECEIVER PROTECTIVE SYSTEM FOR PREVENTING SCREEN BURN  
In a television receiver in which a television signal source is DC coupled to the cathode of a picture tube and circuit means including a brightness control is connected between the control grid...
3588608 CIRCUIT PROTECTION APPARATUS FOR DISABLING HIGH VOLTAGE TO A CATHODE-RAY TUBE  
3551733 MULTIPLE SWEEP DISPLAY  
3530236 SIGNAL CONVERTER TO DISPLAY PHYSIOLOGICAL SIGNALS ON CONVENTIONAL TELEVISION RECEIVERS  
3510722 PROTECTION CIRCUITS OR KINESCOPES  
3475637 CATHODE RAY TUBE WITH ELECTRON BEAM INTERCEPTOR  
3462640 SPOT-BURN PROTECTION CIRCUIT  
3448328 CATHODE RAY TUBE BRIGHT SPOT ELIMINATING CIRCUIT  
3437872 CATHODE RAY TUBE PROTECTION APPARATUS  
3408580 Oscilloscope device exhibiting reduced jitter  
3402316 Flux switch protective system for electrical apparatus  
3343061 Transistor circuit for developing a high voltage and including short-circuit protection means  
3277333 Storage tube system and method  
3164746 Sweep protection circuit  
3154716 Screen protection circuit for radar display device  
2998542 Off-centered sweep amplifiers  
2995683 Control circuit  
2951181 Sampling oscilloscope  
2948830 Electrical storage apparatus  
2928983 Electrical information storage apparatus  
2913621 Protection system for cathode ray tubes  
2888606 Modulation control for cathode ray tubes  
2882445 Protective circuit  

Matches 1 - 50 out of 61 1 2 >