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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7924981 | X-ray generator A discharging part of an X-ray generator using a one-side earthed X-ray tube is earthed is identified on the basis of the tube voltage detected value and the tube current detected value. For the identification, the X-ray generator comprises a device comprising tube ... | 04/12/2011 |
| 7636422 | X-ray CT apparatus and X-ray tube current determining method This invention is provided to determine a tube current at the imaging of the heart by an X-ray CT apparatus in such a manner that image noise becomes constant. Upon determining a tube current of an X-ray tube at the time that the heart is imaged by an X-ray CT appar... | 12/22/2009 |
| 7409043 | Method and apparatus to control radiation tube focal spot size A method for controlling focal spot size changes of an x-ray source in an imaging system includes measuring focal spot sizes as a function of a plurality of x-ray source operating parameters, determining a calibration table or transfer function utilizing the measure... | 08/05/2008 |
| 7366283 | Method to control anodic current in an x-ray source An apparatus and method for an x-ray system includes an x-ray emitter having a first electrode and a second electrode. A high voltage supply is electrically connected to the first electrode. A power supply is electrically connected to the second electrode. A control... | 04/29/2008 |
| 7340035 | X-ray tube cathode overvoltage transient supression apparatus An imaging tube (30) includes multiple high voltage elements (64). A voltage-clamping device (70) is coupled between the high voltage elements (64) and prevents the occurrence of overvoltage transients in the minor insulation of an imagin... | 03/04/2008 |
| 7336762 | Scan program communication method and X-ray CT apparatus An X-ray CT apparatus includes a host and a scanner that executes a scan based on a scan program communicated from the host by means of communicating means. The X-ray CT apparatus also includes a communicating means which collectively communicate the calculated valu... | 02/26/2008 |
| 7327826 | X-ray imaging apparatus and operating method therefor, with subject thickness-dependent use of a scattered ray grid In order to achieve a particularly good image sharpness, in a method and apparatus for radiological imaging of an examination subject, a digital x-ray detector is arranged behind the subject and a scattered-ray grid is positionable between the subject and the x-ray ... | 02/05/2008 |
| 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 |
| 7286641 | Method and device for exposing x-ray images The invention relates to a method of controlling the exposure of an X-ray image. Starting values for the tube current, the tube voltage and the exposure duration are hereby set on the X-ray tube (10). Following the start of the exposure, the resultant dose ra... | 10/23/2007 |
| 7276911 | Detection of malfunctioning bulbs in decorative light strings A system for locating a malfunctioning bulb in a decorative light string uses an antenna that produces an output signal corresponding to the strength of the electric field produced by a portion of the light string near the antenna. An amplifier is coupled to the ant... | 10/02/2007 |
| 7274771 | Methods and systems for controlling exposure for medical imaging devices Methods and systems for controlling exposure for medical imaging devices is provided. The method includes varying the exposure level of X-rays within an X-ray imaging system to generate a plurality of images having different exposure levels and combining the plurali... | 09/25/2007 |
| 7262589 | Pulse width modulation power regulator and power supply system thereof A pulse width modulation (PWM) power regulator and a power supply system thereof are disclosed. The power supply system includes a central controller having a soft-starting circuit and at least one PWM power regulator, wherein the central controller and the PWM powe... | 08/28/2007 |
| 7233645 | Systems and methods for controlling an X-ray source A control system for an X-ray source includes a sensor interface for receiving one or more sensor signals representative of operation of the X-ray source; a programmable controller operative in response to the one or more sensor signals and a sequence of control ins... | 06/19/2007 |
| 7233647 | Radiation window and method of manufacture A radiation window device to transmit radiation as part of an x-ray source or detector includes a support to be subject to a substantial vacuum, and an opening configured to transmit radiation. A film is mounted directly on the support across the opening, and has a ... | 06/19/2007 |
| 7224769 | Digital x-ray camera Portable x-ray devices and methods for using such devices are described. The devices have an x-ray tube powered by an integrated power system. The x-ray tube is shielded with a low-density insulating material containing a high-Z substance. The devices can also have ... | 05/29/2007 |
| 7215733 | X-ray computed tomography apparatus A plurality of region-specific areas are set on a scanogram, and an image SD value is set for each region-specific area. A tube current calculating unit calculates a tube current value at each position on the basis of a tube current pattern in a tube current pattern... | 05/08/2007 |
| 7215739 | Active dose reduction device and method An active dose radiation device and method decreases the amount of x-rays which may be generated by an x-ray tube following termination of the x-ray exposure. One component of the x-ray system is connected to the device which has a plurality of electronic cells that... | 05/08/2007 |
| 7203270 | X-ray computed tomographic apparatus An X-ray computed tomographic apparatus includes a gantry, a reconstructing portion, and a tube current value determining portion. The gantry acquires projection data of an arbitrary range in a body axial direction by continuously moving a tabletop on which a subjec... | 04/10/2007 |
| 7197109 | Real-time digital x-ray imaging apparatus A x-ray diagnostic apparatus and methods perform Real-Time Digital Radiography with particular application in dental x-ray imaging modalities, such as Orthopantomography, Scannography, Linear Tomography and Cephalography, by using a versatile and robotized mechanica... | 03/27/2007 |
| 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 |
| 7145343 | Repair device for decorative light shunt A repair device for fixing a malfunctioning shunt across a failed filament in a light bulb in a group of series-connected miniature decorative bulbs includes a high-voltage pulse generator producing one or more pulses of a magnitude greater than the standard AC powe... | 12/05/2006 |
| 7142630 | X-ray computed tomography apparatus with X-ray intensity control An X-ray computed tomography apparatus includes an X-ray tube, a high voltage generator which generates a high voltage to be applied to the X-ray tube, an X-ray detector having a plurality of X-ray detection element lines, a scanogram generating unit which generates... | 11/28/2006 |
| 7116558 | Server rack A server and data stored in a memory element or a storage medium can be protected from harmful electromagnetic waves from the outside. Shield fingers are arranged along the circumferences of openings of a front door 16 of an upper main body 12 housing ... | 10/03/2006 |
| 7110505 | X-ray source and nondestructive inspector The present invention discloses an X-ray source comprising an X-ray source including a high-voltage applying part for generating an X-ray projecting from a bulb part; a power supply including an insulating block molding therein a voltage generating part for supplyin... | 09/19/2006 |
| 7106824 | X-ray computed tomographic apparatus An X-ray computed tomographic apparatus includes an X-ray tube which generates X-rays, an X-ray detecting unit which detects X-rays transmitted through a subject to be examined to acquire projection data, an image reconstructing unit which reconstructs image data fr... | 09/12/2006 |
| 7103134 | Computed tomography apparatus A computed tomography apparatus configured to assist an operator in easily and correctly making an imaging plan thereby reducing the burden of the operator. The computed tomography apparatus selects at least one of reconstruction methods or changes a parameter by th... | 09/05/2006 |
| 7085353 | X-ray tube The present invention discloses an X-ray tube comprising a vacuum envelope comprising a first tubular part having an X-ray exit window in an opening on a leading end side and an attachment flange on a base end side, and a second tubular part communicating with the i... | 08/01/2006 |
| 7079622 | Method for supplying power to a heating element of a source of radiation and corresponding source A method for determining the heating time constant of a cathode of an X-ray tube. The value of a boost current applied during a preliminary period must be a function of both a pre-existing heating holding current and a service current to be used subsequently. A mode... | 07/18/2006 |
| 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 |
| 7050532 | Imaging condition determining method and an X-ray CT apparatus An imaging condition determining method for an x-ray CT apparatus for performing imaging by a helical scan. The method includes making a table of various imaging conditions in advance, extracting at least one imaging condition from the table in accordance with age, ... | 05/23/2006 |
| 7038432 | Linear predictive controller A linear predictive system for a DC—DC converter including a linear predictive controller, first and second adders and a multiplier. The DC—DC converter generates an output signal and includes a digital compensation block that converts a feedback error signal in... | 05/02/2006 |
| 7035118 | Control means for a transistor switch circuit The invention relates to a control means for a transistor switch circuit controlling a power supply circuit for providing electric power to a load, comprising: a power supply stage having a transistor bridge circuit and an LC circuit with an inductor and filter capa... | 04/25/2006 |
| 7035379 | Radiation window and method of manufacture A radiation window device to transmit radiation as part of an x-ray source or detector includes a support to be subject to a substantial vacuum, and an opening configured to transmit radiation. A film is mounted directly on the support across the opening, and has a ... | 04/25/2006 |
| 7031433 | X-ray source and a nondestructive inspector The present invention discloses an X-ray source comprising an X-ray source including a high-voltage applying part for generating an X-ray projecting from a bulb part; a power supply including an insulating block molding therein a voltage generating part for supplyin... | 04/18/2006 |
| 7023960 | Method of adjusting the emission rate of radiation from a source of radiation To adjust the emission rate of radiation from an X-ray tube, the value of the current of the X-ray tube is modeled empirically by a second-order polynomial function depending on the heating current and a first-order polynomial function depending on the high voltage.... | 04/04/2006 |
| 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 |
| 7016461 | Real-time digital x-ray imaging apparatus An x-ray diagnostic apparatus and methods performs Real-Time Digital Radiography with particular application in dental x-ray imaging modalities, such as Orthopantomography, Scannography, Linear Tomography and Cephalography, by using a versatile and modular electroni... | 03/21/2006 |
| 7012988 | Method of controlling X-ray and X-ray apparatus therefor The invention relates to a method of controlling an X-ray apparatus containing an X-ray emitter. Control means for the X-ray apparatus are provided with exposure time correction data for given mains voltages and the current mains voltage is measured before and/or du... | 03/14/2006 |
| 6975698 | X-ray generator and slip ring for a CT system The present invention is directed to an apparatus for supplying power to a rotatable x-ray tube for generation of an x-ray beam for acquisition of CT data. The apparatus includes a slip ring to transfer power from a stationary inverter to a rotatable HV tank. The HV... | 12/13/2005 |
