| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 378111000 | Voltage regulated | 24 |
| 20090175419 | VOLTAGE GENERATOR OF A RADIATION GENERATOR - A voltage divider of a voltage generator is provided. The divider comprises an input terminal opposite an output terminal, a measurement resistor electrically connected in series between the input terminal and the output terminal, a footer resistor electrically connected in parallel between the output terminal and electrical ground, and a footer capacitor electrically connected in parallel between the output terminal and electrical ground. A value of the footer resistor is at least a magnitude smaller relative to a value the measurement resistor. The divider further includes a reactive bypass component having a first end electrically connected in parallel to the measurement resistor. | 07-09-2009 |
| 20090245467 | SYSTEM AND METHOD OF FAST SWITCHING FOR SPECTRAL IMAGING - A system includes a generator configured to output at least one voltage level and an x-ray source configured to generate x-rays directed toward an object. The system includes a module coupled to the output of the generator and to an input of the x-ray source and configured to switch or assist in switching an output to the x-ray source between a first voltage level and a second voltage level. | 10-01-2009 |
| 20110002446 | Computed tomography systems - A power delivery system for computed tomography includes at least one transformer (e.g., an isolation transformer, a coupling transformer, an adaptation transformer), a rotary transformer, and at least two power inverters. The rotary transformer includes a stationary winding disposed on a stationary side and a rotational winding disposed on a rotating side. The isolation or adaptation transformer is coupled to the stationary winding or the rotating winding of the rotary transformer. At least two power inverters are constructed and arranged to provide power to the primary winding of the rotary transformer. The high-voltage unit is disposed on the rotating side and connected to receive power from the rotational winding and constructed to provide power to an X-ray source. | 01-06-2011 |
| 20110286580 | High-voltage x-ray generator - A power supply for a device which has a load, comprising a first resonant generator and a second resonant generator, coupled in parallel, each generator having a phase output. The power supply further comprises a control circuit coupled to the first and second generators controlling the first and second phase outputs, wherein the first phase output and the second phase output are summed to provide a variable power supply to the load. | 11-24-2011 |
| 20110311027 | OUTPUT CURRENT SENSING METHOD IN DISCONTINUOUS DC-TO-DC VOLTAGE CONVERTER - The present invention refers to high-voltage generators, in particular to a step-down DC-to-DC converter circuit (buck converter) for supplying a DC output voltage out which may e.g. be used in a voltage supplying circuitry of an X-ray radiographic imaging system. According to the invention, the peak value of the buck converter's storage inductor current L is controlled by a control circuit μC′ which regulates the on-time Δt | 12-22-2011 |
| 20120155613 | METHOD AND SYSTEM FOR ACTIVE RESONANT VOLTAGE SWITCHING - Methods and systems for active resonant voltage switching are provided. One active resonant switching system includes a voltage switching system having one or more active resonant modules to provide a switching voltage output. Each of the resonant modules includes a plurality of switching devices configured to operate in open and closed states to produce first and second voltage level outputs from a voltage input. The resonant modules also include a capacitor connected to the switching devices and configured to receive a discharge energy during a resonant operating cycle when switching an output voltage from the first voltage level to the second voltage level, wherein the capacitor is further configured to restore system energy when switching from the second to first voltage level. The resonant modules further include a resonant inductor configured to transfer energy to and from the capacitor. | 06-21-2012 |
| 20120155614 | METHOD AND SYSTEM FOR PASSIVE RESONANT VOLTAGE SWITCHING - Methods and systems for passive resonant voltage switching are provided. One passive resonant switching system includes a voltage switching system having one or more passive resonant modules to provide a switching voltage output. Each of the passive resonant modules include switching devices configured to operate in open and closed states to produce first and second voltage level outputs from a voltage input. The passive resonant modules also include a capacitor connected to the one or more switching devices and configured to receive a system discharge energy during a resonant operating cycle when switching an output voltage from the first voltage level to the second voltage level, and to be recharged when switching from the second to first voltage level. The passive resonant modules further include a resonant inductor and an additional switching device. | 06-21-2012 |
| 20120189103 | X-Ray Imaging System With Cabling Precharging Module - An X-ray imaging system can include an X-ray tube, an X-ray generator, a precharging module and a triaxial cable. The X-ray tube can be configured to generate an X-ray emission and include an anode, a cathode and a filament. The X-ray generator can be coupled with the X-ray tube and include a high voltage module and a low voltage module. The high voltage module can be being configured to supply a dosing voltage across the X-ray tube and the low voltage module can be configured to supply a dosing current to the filament. The precharging module can be configured to supply a precharge voltage. The triaxial cable can electrically connect the X-ray generator to the X-ray tube. The outer shield conductor of the triaxial cable can carry a ground voltage, the inner shield conductor can carry the precharge voltage and the center conductor can carry the dosing voltage. | 07-26-2012 |
| 20130070901 | OPTIMIZED SWITCHING FOR A MULTILEVEL GENERATOR - A method for the generation of drive signals for a multilevel generator comprising a number of cells that may be switched independently of each other is provided. Each of the cells is provided to output a cell voltage based on a respective drive signal. The drive signals of the cells overall output a multilevel quantized reference signal. The method includes splitting the multilevel quantized reference signal such that at least two drive signals of different cells contribute to a quantization level of the quantized reference signal in a predetermined period. | 03-21-2013 |
| 20130142311 | METHOD FOR THE AUTOMATIC CONTROL OF MAXIMUM POWER FOR X-RAY APPARATUSES, AND DEVICE REQUIRED FOR SAME - A method of operating an x-ray unit that supplies the maximum power at all times, for which the supply or input voltage at the x-ray tube must be half the power supply voltage ((Vbat)/2 or (Vline)/2), which will be termed the reference voltage (Vref). In case of a deviation from the reference voltage, the method modifies the current supplied, changing the exposure time so that the maximum power is delivered at all times. In short, it is based on a method that regulates the tube current as a function of the supply voltage (of the batteries or the grid). | 06-06-2013 |
| 20140205071 | TRANSMISSION-TYPE X-RAY TARGET AND RADIATION GENERATING TUBE INCLUDING THE SAME - A transmission-type X-ray target includes a flat plate-shaped diamond substrate having a first surface and a second surface facing the first surface and a target layer that is located on the first surface. A residual stress of the first surface is lower than a residual stress of the second surface. | 07-24-2014 |
| 20150124932 | POWER SYSTEM OF X-RAY TUBE AND METHOD OF CONTROLLING THE SAME - A method of controlling a power system of an X-ray tube is provided to supply power to the X-ray tube and control the emission operation of the X-ray tube. The method includes following steps: First, it is to judge whether a high voltage operation of the X-ray tube is started up. Afterward, a high voltage reference signal is gradually increased when the high voltage operation of the X-ray tube is started up. Afterward, it is to judge whether the high voltage reference signal is increased to an upper limit voltage level. Finally, the emission operation of the X-ray tube is executed when the high voltage reference signal is increased to the upper limit voltage level. | 05-07-2015 |
| 20160020058 | X-RAY SOURCE, HIGH-VOLTAGE GENERATOR, ELECTRON BEAM GUN, ROTARY TARGET ASSEMBLY, ROTARY TARGET, AND ROTARY VACUUM SEAL - Disclosed herein are a high-voltage generator ( | 01-21-2016 |
| 20190150255 | X-RAY GENERATING APPARATUS | 05-16-2019 |
| 378112000 | Automatic | 10 |
| 20080285716 | SYSTEM AND METHOD FOR HIGH VOLTAGE TRANSIENT SUPPRESSION AND SPIT PROTECTION IN AN X-RAY TUBE - A system and method to improve the high voltage performance of an x-ray tube with electrostatic deflection of an electron beam focal spot. The system and method provides protection of bias circuits from high voltage transients and spit protection in x-ray tubes through the use of a high voltage transient suppression and spit protection circuit assembly coupled between the bias circuits of a high voltage generator and an x-ray tube vacuum housing of an x-ray generation system. | 11-20-2008 |
| 20090034686 | X-RAY APPARATUS - An X-ray apparatus includes a converter into which there is integrated a control logic circuit configured to regulate the supply voltage of a high-voltage power supply source of the X-ray apparatus. To this end, the intelligent voltage-voltage, converter is placed between the power battery and the capacitor bank. This intelligent converter is capable of determining the optimum voltage to be delivered to the generator for the radiology examination to be undertaken in regulating the current of the power battery at the necessary level of current. | 02-05-2009 |
| 20100098217 | FAST SWITCHING CIRCUIT FOR X-RAY IMAGING APPLICATIONS - A system is provided, which includes a rotatable gantry for receiving an object to be scanned. The system includes an x-ray source for projecting x-rays of two different energy levels towards the object and also a power supply, which energizes the x-ray source to two different voltage levels at a predetermined rate for generating x-rays at two different energy levels. The power supply in the system includes a fixed voltage source to input a voltage to a switching module with number of identical switching stages. Each stage in the switching module consists of a first switch, which charges a capacitor in a conducting state and output a first voltage, a second switch, which connects the fixed voltage source and the capacitor in series to output a second voltage in a conducting state and a diode which blocks a reverse current from the capacitor to the power supply. | 04-22-2010 |
| 20100254515 | INVERTER DEVICE AND X-RAY HIGH-VOLTAGE DEVICE USING THE INVERTER DEVICE - There is provided an inverter device that can detect short-circuit of a switching element of an inverter circuit even under a load condition that a PWM driving signal is very small. The inverter device is provided with means for independently supplying a short-circuit detecting PWM driving signal to respective switching elements S | 10-07-2010 |
| 20110103552 | VOLTAGE STABILIZATION FOR GRID-CONTROLLED X-RAY TUBES - The present embodiments improve the radiation monochromy of an x-ray device with a control electrode for controlling a flow of electrons generated between a cathode and an anode. A correction voltage is generated in accordance with a correction function. This correction voltage is used for correction of a voltage applied between the anode and the cathode in terms of a constant voltage, even in the period of control using the control electrode. The voltage applied between the anode and the cathode is corrected with the generated correction voltage. | 05-05-2011 |
| 20110235783 | X-RAY GENERATING APPARATUS AND CONTROL METHOD THEREOF - An X-ray generating apparatus controls driving of an X-ray tube. The X-ray tube includes an electron source emitting electrons due to application of a voltage, a transmission-type target generating an X-ray due to collision of electrons emitted from the electron source, and a shield member disposed between the electron source and the transmission-type target, the shield member having an opening that electrons emitted from the electron source pass through, and blocking an X-ray that scatters toward the electron source. When generating the X-ray, application of a voltage to the transmission-type target is started, and emission of electrons from the electron source is caused after passage of a predetermined period indicating a time period from starting voltage application until the transmission-type target reaches a predetermined voltage. When stopping X-ray generation, application of the voltage to the transmission-type target is stopped after stopping the emission of electrons from the electron source. | 09-29-2011 |
| 20120039442 | HIGH-VOLTAGE APPARATUS, AND RADIATION SOURCE AND RADIOSCOPIC APPARATUS HAVING THE SAME - In a high-voltage apparatus according to this invention, a predetermined voltage is applied to a rotating anode after waiting until the number of rotations increases to such an extent that the rotating anode is not damaged. That is, X-rays of desired intensity are already outputted from a point of time when the voltage is applied to the rotating anode. Therefore, diagnosis can be performed immediately after the voltage is applied to the rotating anode. That is, unlike the prior art, there is no need to wait until X-ray intensity becomes suitable for diagnosis after X-ray emission is started, and there is no need to irradiate the patient with unnecessary X-rays. Therefore, the patient can be inhibited from being irradiated with excessive X-rays (with an improvement made in a response from when the operator gives instructions for starting fluoroscopy until emission of X-rays suitable for diagnosis). | 02-16-2012 |
| 20120140894 | METHOD AND X-RAY DEVICE TO DETERMINE THE VALUE OF THE TUBE VOLTAGE - In a method and x-ray device to determine the value of an x-ray tube voltage to generate at least one image of defined tissue to be examined, at least one provided parameter is used that establishes or describes the desired image quality; based on the dependency of the contrast of the defined tissue to be examined on the spectrum of the x-ray radiation or on the value of the tube voltage of the x-ray tube. The tube voltage is determined also based on a contrast-to-noise ratio that is constantly maintained under consideration of the aforementioned parameter such that the dose of x-ray radiation applied to the patient is optimally low upon setting the value of the tube voltage at the x-ray tube and the acquisition of at least one x-ray projection of the defined tissue. | 06-07-2012 |
| 20160183355 | SELECTING SCANNING VOLTAGES FOR DUAL ENERGY CT SCANNING | 06-23-2016 |
| 20160192466 | Energy Imaging With Controlled Rise And Fall Times - Rise times and fall times provided by a high voltage generator are controlled to maintain image quality during such scans. The rise and fall times are controlled by first measuring rise and fall times at each transition. Then, a closed-loop controller is used to adjust control parameters of the high voltage generator, based on an error determined from the measurement, to achieve substantially constant rise and fall times. This invention may be based on the implementation of two closed-loop controllers on rise and fall time of fast-kV exposures. As a result, image quality may be improved and system calibration time may be reduced. | 06-30-2016 |
