Patent application number | Description | Published |
20080258600 | High-Frequency, High-Voltage Electron Switch - A high-frequency, high-voltage electron switch includes an electron source, a steering mechanism, a mask or anode plate, and a target. The electron source produces a beam of electrons with a voltage of at least about 1 kV that impinges upon the anode plate. The steering mechanism scans the electron beam across the anode plate at a scanning frequency of at least about 10 MHz. A hole or aperture is provided in the anode plate that allows the electron beam to pass through and produce a pulsed, high-voltage current in the target with a very high-frequency repetition rate and a very fast rise time. The pulsed, high-voltage current produced in the target can be used to cause a high-voltage source to turn on and off. | 10-23-2008 |
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 |
20090066391 | High voltage, high speed, high pulse repetition rate pulse generator - A high voltage, high speed, and high repetition rate pulse generator solves the high pulse repetition rate limitations associated with RF power amplifiers. The pulse generator employs resonant techniques to provide current limiting features that allow for continued high voltage, high speed, and high repetition pulse rate operation of the pulse generator without impairment of the pulse generator during both short circuit and open circuit load conditions. | 03-12-2009 |
20090108759 | High effficiency and high bandwidth plasma generator system for flow control and noise reduction - A plasma generation system includes a pulse generator having at least one switch and that is configured to convert a DC voltage to a desired high frequency, high breakdown voltage pulse sufficient to break down a high-breakdown voltage gap, wherein all pulse generator switches are solely low to medium voltage, high frequency switches, and further configured to apply the breakdown voltage to a plasma load for the generation of plasma. In one application, the plasma generation system is useful to manipulate the flow of jets and provide highly efficient acoustic noise reduction. | 04-30-2009 |
20090219071 | Transmission line based high voltage pulse generator - A high voltage, fast pulse rise/fall time, and high repetition rate pulse generator solves the high pulse repetition rate limitations associated with RF power amplifiers and gap switch type pulse generators. The pulse generator employs a transmission line architecture and structural techniques that allow for continued high voltage, fast rise/fall time, and high repetition pulse rate operation of the pulse generator without impairment of the pulse generator while exceeding performance characteristics achievable with conventional RF power amplifiers and gap switch type pulse generators. | 09-03-2009 |
20100301702 | HIGH GAIN MINIATURE POWER SUPPLY FOR PLASMA GENERATION - A high gain pulse generator includes a piezoelectric transformer (PT) that is driven by an input power stage to drive the PT at a desired PT resonant frequency such that at least one PT characteristic substantially matches at least one non-linear load characteristic such as, without limitation, a plasma load characteristic to deliver a desired pulse to the non-linear load. | 12-02-2010 |
20110074361 | ANTIFERROELECTRIC CAPACITOR-ENABLED POWER CONVERTER - A power converter utilizes one or more nonlinear composite film capacitors constructed solely of polymer anti-ferroelectric (AFE) particle composites and configured as DC-link bus capacitors providing an energy buffer to reduce DC-link voltage ripple. | 03-31-2011 |
20120144832 | PASSIVE AIR-FUEL MIXING PRECHAMBER - A gas turbine combustion system passive air-fuel mixing prechamber includes one or more fuel passages. Each fuel passage includes at least one downstream fuel injection orifice. One or more fluid conduits connect an upstream portion of at least one fuel passage with one or more air passages such that pressure drops across each fuel injection orifice substantially self-equalize in a passive manner with corresponding air passage pressure drops over a broad range of fuel lower heating value (LHV) from about 150 Btu/scf to about 900 Btu/scf of fuel passing through the fuel passage while mixing with air passing through one or more connected fluid conduits. The effective area of each fluid conduit relative to the corresponding fuel and air passages is dependent upon the desired fuel LHV operating range. | 06-14-2012 |
20130107590 | SOLID STATE PULSED POWER GENERATOR | 05-02-2013 |
20130162322 | HIGH SPEED LOW LOSS GATE DRIVE CIRCUIT - A gate drive circuit includes an insulated gate semiconductor switch. A controlled current source is connected to the semiconductor switch gate terminal to provide a gate drive circuit that is responsive to recycled gate charge corresponding to an internal gate capacitance of the insulated gate semiconductor switch. | 06-27-2013 |
20130322602 | INTERNAL SHIELDING X-RAY TUBE - An x-ray tube is presented. One embodiment of the x-ray tube includes a cathode unit configured to emit electrons. The x-ray tube further includes an anode unit positioned to receive the emitted electrons, wherein the anode unit includes a base having a target surface configured to generate x-rays when the emitted electrons impinge on the target surface. Also, the anode unit includes a first shielding unit enclosing the base to attenuate at least a first portion of the generated x-rays within the anode unit. | 12-05-2013 |
20140064456 | MOTION CORRECTION SYSTEM AND METHOD FOR AN X-RAY TUBE - A motion correction system and method for motion correction for an x-ray tube is presented. One embodiment of the motion correction system includes a sensing unit coupled to an x-ray tube to determine a distance with which an impingement location of an electron beam generated by the x-ray tube deviates from a determined location due to motion of the x-ray tube. The motion correction system further includes a control unit coupled to the sensing unit to generate a control signal corresponding to the distance with which the impingement location of the electron beam deviates. Also, the motion correction system includes a deflection unit coupled to the control unit to steer the electron beam to the determined location based on the generated control signal. | 03-06-2014 |
20140112449 | SYSTEM AND METHOD FOR COLLIMATING X-RAYS IN AN X-RAY TUBE - An apparatus and method for providing a predefined x-ray field is presented. Briefly in accordance with one aspect of the present disclosure, the apparatus includes a cathode unit configured to emit electrons within a vacuum chamber. The apparatus further includes an anode unit configured to generate x-rays when the emitted electrons impinge on a target surface of the anode unit. Also, the apparatus includes a collimating unit comprising a primary set of blades disposed in the vacuum chamber at a first distance from the anode unit for collimating the generated x-rays to provide the predefined x-ray field at a detector. | 04-24-2014 |
20140146585 | SYSTEM AND METHOD FOR POWER CONVERSION - A power converter is provided. The power converter includes a converter leg including switches for converting power. The power converter also includes a controller for switching the switches using a pulse width modulation technique. The power converter further includes an interface inductor coupled to the converter leg for avoiding a reverse recovery of current in the switches during operation. | 05-29-2014 |
20150023468 | SYSTEM AND METHOD FOR REDUCING A WEIGHT OF AN X-RAY SOURCE - A portable x-ray system includes a light weight x-ray head including an x-ray tube and a high voltage (HV) tank, wherein the HV tank comprises a compact voltage multiplier configured to receive a low voltage signal and generate a high voltage signal based on the received low voltage signal. Also, the portable x-ray system includes a carrying case comprising low voltage power electronics coupled to the light weight x-ray head through a low voltage cable, and configured to send the low voltage signal to the light weight x-ray head. In addition, the low voltage power electronics is distributed in a predefined space in the carrying case in such a way that a weight of the light weight x-ray head is counter weighed by a weight of the low voltage power electronics to stabilize the portable x-ray system when the light weight x-ray head is rotated in one or more directions. | 01-22-2015 |
20150131328 | SYSTEM AND METHOD FOR POWER CONVERSION - A power conversion system is presented. The system includes a power source coupled to a power converter and a controller. The controller is configured to determine a value of at least one parameter corresponding to the power source. Additionally, the controller is configured to provide a first portion of the at least one parameter to the power converter and modify an operating frequency of the power converter, duty ratio of the power converter, or a combination thereof. Furthermore, the controller is configured to obtain an electrical quantity at an output of the power converter based on the modified operating frequency, the modified duty ratio, or a combination thereof. Also, the controller is configured to deliver a combination of the electrical quantity obtained at the output of the power converter and a second portion of the at least one parameter to a load. Method for converting power is also presented. | 05-14-2015 |
20150138859 | SYSTEM AND METHOD FOR POWER CONVERSION - A power conversion system is presented. The power conversion system includes a power converter. The power converter includes at least two circuits, where each of the at least two circuits includes two or more phase legs, where each of the two or more phase legs includes at least two semiconductor switches. Also, the at least two circuits includes an interphase reactor configured to couple one of the two or more phase legs to at least one other phase leg in the two or more phase legs. Moreover, the power conversion system includes a controller configured to obtain a switching pattern for each of the at least two semiconductor switches of the at least two circuits and selectively switch each of the at least two semiconductor switches based on the obtained switching pattern to reduce a common mode signal in the power conversion system. Method for power conversion is also presented. | 05-21-2015 |
20150311708 | SYSTEM AND METHOD FOR HYBRID ENERGY CONVERSION - A system and method for conditioning DC power received from hybrid DC power sources is disclosed. A power conversion circuit is coupled to a respective DC power source to selectively condition the output power generated thereby to a DC bus voltage. The power conversion circuit includes a switch arrangement and capacitors arranged to provide a charge balancing in the power conversion circuit. A controller in operable communication with the switch arrangement receives inputs on a DC bus voltage and at least one parameter related to operation of the DC power source, and determines an adjustable voltage to be output from the conversion circuit to the DC bus based on the received inputs. The controller then selectively controls operation of the switch arrangement in order to generate the determined adjustable voltage. | 10-29-2015 |
Patent application number | Description | Published |
20110188649 | VOIP DIAL PLAN ANALYSIS AND IMPROVEMENT BASED ON DESIGN PATTERNS - A computer implemented method that analyzes and improves a dial plan. A dial plan design template system receives an existing dial plan. The dial plan design template system models the existing dial plan as a directed graph. The dial plan design template system analyzes the directed graph to determine compliance with a set of edge rules. The dial plan design template system analyzes the directed graph to determine compliance with a set of connectivity type rules. | 08-04-2011 |
20110216897 | Providing Information by a Contact Center - A method for a contact center to provide information to one or more users in response to one or more inquiries from the one or more users is presented. For example, the method includes accessing, using at least one client adaptor, at least one agent group that includes at least one agent having knowledge regarding the one or more inquiries. The method further includes the at least one agent responding to the one or more inquiries using the at least one client adaptor. The at least one agent group has pre-existing communications infrastructure that is accessed by a computing platform of the contact center using the at least one client adaptor. | 09-08-2011 |
20120023044 | Issue Resolution in Expert Networks - Techniques are provided for improved issue resolution in an expert network. For example, a method comprises the following steps. Information is extracted comprising: content of one or more historical records associated with resolutions of one or more previous issues; and transfer routing sequences indicating routes through routing entities in an expert network that the one or more previous issues passed in order to be respectively resolved;. A model is computed based on at least a portion of the extracted information, wherein the computed model statistically captures one or more ticket transfer patterns among routing entities in the expert network. One or more future issue resolution routing recommendations are determined based on at least one of the one or more ticket transfer patterns captured by the computed model. | 01-26-2012 |
20140074443 | GENERATING AND EVALUATING EXPERT NETWORKS - A method comprises obtaining a model of at least one collaborative network, modeling at least one routing pattern for one or more nodes of a given collaborative network, simulating one or more virtual network topologies of the given collaborative network using the at least one model and the at least one routing pattern, and configuring a given one of the one or more virtual network topologies on the given collaborative network. The given collaborative network comprises a plurality of nodes and one or more edges between pairs of the plurality of nodes. At least one of the obtaining, modeling, simulating and configuring steps are performed by a processor device. | 03-13-2014 |
20140075318 | GENERATING AND EVALUATING EXPERT NETWORKS - A system comprises a modeling component, a routing component, a simulator component and a configuration component. The modeling component is operative to obtain at least one model of at least one collaborative network. The routing component is operative to model at least one routing pattern for one or more nodes of a given collaborative network. The simulator component is operative to simulate one or more virtual network topologies of the given collaborative network using the at least one model and the at least one routing pattern. The configuration component is operative to configure one or more given virtual network topologies on the given collaborative network. The collaborative network comprises a plurality of nodes and one or more edges between pairs of the plurality of nodes. The modeling component, routing component, simulator component and configuration component are executed by at least one processing device. | 03-13-2014 |
Patent application number | Description | Published |
20080285480 | Cooperative Wireless Communications - When it is advantageous to do so, a wireless LAN station sends data packets to a destination station via an intermediate station, instead of to the destination station directly. That is, the intermediate station, which serves as a helper to the source, forwards packets received from the source station to the intended destination station. This cooperative data transmission approach can result in system performance improvement, as long as the total time consumed by two-hop transmission (i.e., transmission via the helper station) is less than direct transmission. Such a determination may be made using rate information stored at each station. Specifically, using the rate information, signaling needed to set up a transmission, the amount of data to be transmitted, etc., transmitting the data directly and via a help station may be compared. | 11-20-2008 |
20090059815 | Self- organizing multi-channel mesh network - A system for self-organizing and auto-configuring mesh networks is disclosed. Special nodes (deemed special for their topological significance) are used as a starting point for forming clusters of fully connected nodes. Here, all nodes can communicate directly with one another and links are scheduled to meet the traffic requirements as indicated by their individual configuration and topological positions. Links that do not interfere with each other are scheduled to operate concurrently, thereby increasing the bandwidth offered by the whole system. When there is change to the system, such as leaving or introduction of a node, the system will adjust with minimum impact on its operation. Once all of the clusters are formed in a system, the clusters are now capable of inter-cluster communications with an increase in bandwidth for such communications. | 03-05-2009 |