Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7933381 | HF frequency tuning device An HF frequency tuning device includes a resonance cavity in which an HF is introduced, a phase detecting section which generates a sign data representing a sign of a phase difference between a traveling wave and a reflected wave included in the HF in the resonance ... | 04/26/2011 |
| 7352594 | Stage for rectifying a three-phase current The rectification stage (18) having: an autotransformer (40) for twelve-phase rectification; two rectifiers (50A, 50B) each of which is connected at the input to three separate phases of... | 04/01/2008 |
| 7327827 | X-ray high voltage device A semiconductor switch 12 connected in series with a smoothing capacitor 12 is constituted by connecting in parallel a diode 13D which permits to flow current regenerated from energy of electric charges stored in a high voltage capacitor 17 | 02/05/2008 |
| 7305065 | X-ray generator with voltage doubler Between terminals of secondary windings in a high-voltage transformer (3), there are connected in parallel input side terminals of a plurality of diode full bridge circuits each via voltage maintaining means such as a capacitor maintaining a voltage peak valu... | 12/04/2007 |
| 7254260 | Method and apparatus for compressing image signals A plurality of radiation image signals respectively representing a plurality of radiation images of an object, which radiation images have been formed with several kinds of radiation having different energy distributions, are obtained. An energy subtraction image si... | 08/07/2007 |
| 7175345 | Dental x-ray apparatus A dental x-ray apparatus (10) includes a tube head (11) formed from a cast zinc material. Structural components of tube head (11) include such component (20) formed from a plastic material impregnated with a high molecular weight substanc... | 02/13/2007 |
| 7110499 | High-voltage supply for an X-ray device The disclosed, embodiments relate to a high-voltage supply (11, 13, 23) for an X-ray device. The X-ray device comprises an X-ray tube (15) and a high voltage generator(1), for generation of the high voltage necessary for operating the X-ray tube... | 09/19/2006 |
| 7079700 | Image processing apparatus, image processing method, storage medium, and program There are disclosed an image processing apparatus and method, and the like, which can obtain a high-quality image, the dynamic range or partial pixel value range of which has been changed while suppressing or avoiding collapse of the edge structure of an image or ge... | 07/18/2006 |
| 7076111 | Image processing apparatus, image processing method, storage medium, and program There are provided an image processing apparatus and method. In this apparatus and method, high-frequency components are converted by multiple-frequency transformation in accordance with tone conversion used to change the dynamic range, thereby obtaining a high-qual... | 07/11/2006 |
| 7054125 | X-ray protector The present X-ray protector requires no raising of a voltage to be impressed to a cathode ray tube (CRT) and no complicated control procedure for testing the X-ray protector's operation. The voltage applied to the CRT is detected by a detection winding of a flyback ... | 05/30/2006 |
| 7050539 | Power supply for an X-ray generator A power supply for X-ray generators which includes at least one inverter (11, 12, 13), at least one transformer (111, 121, 131) and at least one voltage cascade (112, 122, 132) for generating a supply voltage for an X-ray tube (15). In or... | 05/23/2006 |
| 7016468 | X-ray tube preheat control A current feedback circuit in a dental imaging apparatus, which measures the x-ray tube current produced by the x-ray filament. During preheat, when the tube current is sensed to be appropriate for production of a constant rate of electrons, preheat is stopped, and ... | 03/21/2006 |
| 6945694 | Dental X-ray apparatus A dental x-ray apparatus (10) includes a tube head (11) formed from a cast zinc material. Structural components of tube head (11) include such component (20) formed from a plastic material impregnated with a high molecular weight substanc... | 09/20/2005 |
| 6816573 | X-ray generating apparatus, X-ray imaging apparatus, and X-ray inspection system The voltage applied to a first grid electrode 71 of an X-ray tube 11 by a grid voltage control section 110 is controlled with reference to a predetermined negative voltage from a negative voltage generating section 112 when an object 5... | 11/09/2004 |
| 6765987 | Resonant plasma x-ray source An improved efficiency x-ray source comprised of a fluorescent x-ray tube and resonant high voltage power supply. The fluorescent x-ray tube is an arc discharge tube filled with a low-pressure vapor, xenon for example, that is excited by high-frequency, high-voltage... | 07/20/2004 |
| 6418191 | X-ray apparatus and line connection therefor X-ray apparatus has a d.c.-a.c. converter circuit supplied with energy that is connected via a line connection to a high-voltage transformer supplying the high-frequency operating voltage to an X-ray tube. The line connection has a first and a second cond... | 07/09/2002 |
| 5978446 | Arc limiting device using the skin effect in ferro-magnetic materials A high voltage power supply includes a high voltage high frequency generator (10) having outputs (12, 14). An arc limiting device (20) is connected in series to the outputs (12, 14) of the generator (10). The arc limiting device (20) includes two coils (2... | 11/02/1999 |
| 5914999 | High-frequency voltage generator for supplying an X-ray tube An arbitrary voltage distribution can be achieved in a high-voltage generator which supplied an X-ray tube having a metallic central part, wherein the anode voltage and the cathode voltage are generated in the high-voltage generator by two series-connecte... | 06/22/1999 |
| 5694449 | Method and system for detecting and correcting erroneous exposures generated during x-ray imaging The present invention discloses a method and system for detecting and correcting an erroneous exposure generated during x-ray imaging of a patient. In the present invention, x-ray imaging settings for imaging the patient are selected. X-ray beam quality a... | 12/02/1997 |
| 5661774 | Dual energy power supply The disclosed dual energy baggage scanning assembly includes a CT scanning system, and a conveyor belt for transporting items through the CT scanning system, and an improved power supply for the X-ray source of the CT scanner so that a dual energy beam is... | 08/26/1997 |
| 5602897 | High-voltage power supply for x-ray tubes An x-ray tube of a CT scanner is powered by a high-voltage power supply (26). The high-voltage power supply includes a plurality of sections (102) each having three straight-up transformers (48) which receive three 120° phase shifted alternating current ... | 02/11/1997 |
| 5444757 | X-ray generator An x-ray generator has a power rectifier connected to a high-frequency inverse rectifier and having a high-voltage transformer supplied by the rectifier. In order to achieve low losses in the operation of the high-voltage transformer with a low internal c... | 08/22/1995 |
| 5363286 | High voltage generator A high voltage generator comprises a transformer unit for boosting an inputted AC voltage and a rectifier unit for rectifying the AC voltage boosted by the transformer unit, the transformer unit and the rectifier unit being assembled as high voltage compo... | 11/08/1994 |
| 5347571 | X-ray tube arc suppressor A high frequency voltage generator (10) produces a high positive voltage and a high negative voltage. A parallel connected coil (26) and diode (30) are connected between the high voltage supply and a target (44) of an x-ray tube (40). A second parallel co... | 09/13/1994 |
| 5257304 | High-voltage power device and power pack for X-ray tube In a high-voltage power device for X-ray tubes, a single magnetic circuit is used to couple a primary circuit to two separate secondary circuits. Each of these secondary circuits comprises a series of secondary windings, each connected to a rectifier-doub... | 10/26/1993 |
| 5210780 | Low ripple x-ray generator A high-frequency x-ray generator having low high-voltage ripple at the x-ray tube with a small amount stored energy in the high-voltage circuit and low drive frequency has a series of secondary windings each connected to a high-voltage rectifier having a ... | 05/11/1993 |
| 5187737 | Power supply device for X-ray tube A power supply device for an X-ray tube includes first and second capacitors connected in series at one ends thereof which are connected with a secondary winding of a high-tension transformer. Connectedly arranged between a positive output terminal and th... | 02/16/1993 |
| 5155754 | High frequency supply for an x-ray tube A high-frequency supply for use with an x-ray tube having a central metallic tap includes two inverse rectifiers each having a high-voltage transformers, forming two series-connected high-voltage rectifiers. The tap of the x-ray tube is electrically conne... | 10/13/1992 |
| 5148459 | Power source for X-ray system In a power source device for X-ray system, circuit units are mounted on chassises, respectively and chassises are fixed in a casing and are electrically insulated from the casing by insulative members. The circuit units are electrically connected through ... | 09/15/1992 |
| 5111493 | Portable X-ray system with ceramic tube A small, hand held X-ray machine is constructed to be readily portable, including a portable power supply, yet is sufficiently powerful to take an X-ray of a human patient. The X-ray machine includes a ceramic X-ray tube which is resistant to shocks and v... | 05/05/1992 |
| 5034973 | X-ray generator comprising switching voltage regulator to reduce harmonic current components for supplying constant power In a voltage generating system for an X-ray diagnosis apparatus, a smoothing filter is arranged between a rectifying circuit connected to an AC power source and a smoothing capacitor. In the smoothing filter, by a switching operation for a current from th... | 07/23/1991 |
| 5008913 | Measuring and damping resistor arrangement for a high-voltage apparatus The invention relates to a measuring and damping resistor arrangement for a high-voltage apparatus. The measuring resistor arrangement preferably includes several series-connected resistors which are arranged on a support and which are capacitively bridge... | 04/16/1991 |
| 4839915 | Inverter type X-ray apparatus In an inverter type X-ray apparatus comprising an inverter including a plurality of switching elements operated alternately to generate an AC voltage having a rectangular waveform, a high voltage transformer transforming the AC voltage of rectangular wave... | 06/13/1989 |
| 4797908 | Voltage-resonance type power supply circuit for X-ray tube A power supply circuit of voltage resonance type for supplying a high DC voltage to an X-ray tube includes a transformer, a capacitor for forming a resonance circuit in cooperation with a primary winding of the transformer, and a rectifier circuit coupled... | 01/10/1989 |
| 4783795 | X-ray generator system An X-ray generator system has first and second switching devices such as transistors which are complementarily turned on and off to intermittently apply a DC voltage to the primary winding of a transformer for thereby inducing a high voltage across second... | 11/08/1988 |
| 4768216 | Dynamic calibration for an X-ray machine A dynamic calibration and self-check circuit for a mobile X-ray machine. A high voltage regulator circuit provides dynamic regulation of peak anode voltage and a tube current regulator circuit provides dynamic regulation of the X-ray filament current whic... | 08/30/1988 |
| 4742535 | Inverter type X-ray apparatus Disclosed is an inverter type X-ray apparatus comprising a DC-DC converter for converting a DC voltage into a different DC voltage, an inverter for inverting an output voltage of the DC-DC converter into an AC voltage, a high voltage transformer for trans... | 05/03/1988 |
| 4741010 | High voltage generating apparatus for x-ray tube A high voltage generating apparatus for an X-ray tube comprises an inverter for converting a DC voltage into an AC voltage, a high voltage transformer for boosting an output voltage of the inverter, a rectifier for converting an output voltage of the tran... | 04/26/1988 |
| 4737974 | Inverter type switching power supply with transformer and short circuit arrangement therefor An inverter-type switching power supply circuit which comprises an inverter for converting the DC output of a DC power source to an AC output, a transformer for receiving the AC output of the inverter, a rectifier for rectifying the output of the transfor... | 04/12/1988 |
| 4725938 | High voltage resonant DC/DC converter A high voltage DC/DC converter including a voltage resonance switching circuit formed by a coreless transformer, a GTO thyristor switching element connected between the primary winding of the transformer and a D.C. source, and a voltage resonance capacito... | 02/16/1988 |
