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1124 results about "Microsecond" patented technology
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A microsecond is an SI unit of time equal to one millionth (0.000001 or 10⁻⁶ or ¹⁄1,000,000) of a second. Its symbol is μs, sometimes simplified to us when Unicode is not available. A microsecond is equal to 1000 nanoseconds or ¹⁄1,000 of a millisecond. Because the next SI prefix is 1000 times larger, measurements of 10⁻⁵ and 10⁻⁴ seconds are typically expressed as tens or hundreds of microseconds.
Internet-based system and method for fairly and securely enabling timed-constrained competition using globally time-sychronized client subsystems and information servers having microsecond client-event resolution
InactiveUS20020026321A1Avoiding shortcoming and drawbackBetterment of human societyBuying/selling/leasing transactionsVideo gamesTime responseTTEthernet
An improved system and method of fairly and securely enabling timed-constrained competitions over the Internet among millions of competitors while compensating for the variable network communication latencies experienced by client machines used by the competitors. The system employs globally time-synchronized Internet information servers and client machines in order to synchronize the initial display of each invitation to respond (e.g. stock price to buy or sell, query to answer, or problem to solve) on a client machine so each competitor can respond to the invitation at substantially the same time, regardless of his or her location on the planet, or the type of Internet-connection used by his or her client machine. Also, by using globally time-synchronized client machines, each competitor's response is securely time and space stamped at the client machine to ensure that competitor responses are resolved within microsecond accuracy.
Owner:REVEO
Devices and methods for non-invasive capacitive electrical stimulation and their use for vagus nerve stimulation on the neck of a patient
ActiveUS20120029601A1Avoid stimulationElectrotherapyMagnetotherapy using coils/electromagnetsMedicinePeak value
A non-invasive electrical stimulation device shapes an elongated electric field of effect that can be oriented parallel to a long nerve, such as a vagus nerve in a patient's neck, producing a desired physiological response in the patient. The stimulator comprises a source of electrical power, at least one electrode and a continuous electrically conducting medium in which the electrode(s) are in contact. The stimulation device is configured to produce a peak pulse voltage that is sufficient to produce a physiologically effective electric field in the vicinity of a target nerve, but not to substantially stimulate other nerves and muscles that lie between the vicinity of the target nerve and patient's skin. Current is passed through the electrodes in bursts of preferably five sinusoidal pulses, wherein each pulse within a burst has a duration of preferably 200 microseconds, and bursts repeat at preferably at 15-50 bursts per second.
Owner:ELECTROCORE
Systems and methods for cardiac tissue electroporation ablation
ActiveUS8221411B2Surgical instruments for aspiration of substancesSurgical forcepsCirculatory timeHigh pressure
Cardiac electroporation ablation systems and methods in which pulsed, high voltage energy is delivered to induce electroporation of cells of cardiac tissue followed by cell rupturing. In some embodiments, the delivered energy is biphasic, having a cycle time of not more than 500 microseconds.
Owner:MEDTRONIC INC
Pulsewidth electrical stimulation
A process for stimulating tissue such as cardiac tissue, nerve tissue, and brain tissue. In one step of the process, there is delivered an electrical stimulating signal to the tissue that contains from about 10 to about 1,000 individual pulses. Each individual pulse has a duration of from about one microsecond to about 100 microseconds and is discontinuous, with a spacing between adjacent pulses of at least from about 1 microsecond to about 100 microseconds. The individual pulses have a voltage of from about 10 millivolts to about 100 volts.
Owner:BIOPHAN TECH
Tandem time of flight mass spectrometer and method of use
InactiveUS20050242279A1Rapid MS-MS analysisEasy to separateTime-of-flight spectrometersIsotope separationRelative energyMass analyzer
To provide comprehensive (i.e. rapid and sensitive) MS-MS analysis, the inventor employs a time-nested separation, using two time-of-flight (TOF) mass spectrometers. Parent ions are separated in a slow and long TOF1, operating at low ion energy (1 to 100 eV), and fragment ions are mass analyzed in a fast and short TOF2, operating at much higher keV energy. Low energy fragmentation cell between TOF1 and TOF2 is tailored to accelerate fragmentation and dampening steps, mostly by shortening the cell and employing higher gas pressure. Since separation in TOF1 takes milliseconds and mass analysis in TOF2—microseconds, the invention provides comprehensive MS-MS analysis of multiple precursor ions per single ion pulse. Slow separation in TOF1 becomes possible with an introduction of novel TOF1 analyzers. The TOF-TOF could be implemented using a static TOF1, here described on the examples of spiratron, planar and cylindrical multi-pass separators with griddles spatial focusing ion mirrors. Higher performance is expected with the use of novel hybrid TOF1 analyzers, combining radio frequency (RF) and quadratic DC fields. RF field retains low-energy ions within TOF1 analyzer, while quadratic DC field improves resolution by compensate for large relative energy spread.
Owner:LECO CORPORATION
Method and a device for electro microsurgery in a physiological liquid environment
A method and device for electrical emulation of pulsed laser is disclosed. The device utilizes high voltage electrical discharges of sub-microsecond duration in a liquid medium to produce cavitation bubbles of sub-millimeter size for use in high speed precision cutting. Such bubbles are produced by a micro-electrode (1.6) having a central wire having a diameter of 1 microns to 100 microns embedded in an insulator. A coaxial electrode (1.9) surrounds the insulator, and may be spaced from the outer surface of the insulator to provide a path for removing tissue.
Owner:NANOPTICS
Intelligent light source with synchronization with a digital camera
InactiveUS20060038916A1Easy to upgradeMaintain consistencyTelevision system detailsElectroluminescent light sourcesWaveform shapingPhotodiode
An intelligent light source for use with the test of a digital camera module provides a plurality of shapes of light. A fast light pulse is created with turn-on and turn-off transitions less than or equal to one microsecond. Other waveform shapes comprise a ramp and a sinusoid, and all shapes can be made to occur once or repetitively. The magnitude of the light has a range from 0.01 LUX to 1000 LUX, and the ramp has a ramp time that has a range from microseconds to 100 ms. The light comprises of a plurality of colors created by serial connected strings of LED devices, where the LED devices in a string emit the same color. The light emanating from the light source is calibrated using a photo diode and the control of a tester by adjusting offset voltages of a DAC controlling a current through the LED strings.
Owner:RPX CORP
Global synchronization unit (GSU) for time and space (TS) stamping of input data elements
InactiveUS20020069076A1Avoiding shortcoming and drawbackBetterment of human societySatellite radio beaconingBuying/selling/leasing transactionsTime responseTTEthernet
An improved system and method of fairly and securely enabling timed-constrained competitions over the Internet among millions of competitors while compensating for the variable network communication latencies experienced by client machines used by the competitors. The system employs globally time-synchronized Internet information servers and client machines in order to synchronize the initial display of each invitation to respond (e.g. stock price to buy or sell, query to answer, or problem to solve) on a client machine so each competitor can respond to the invitation at substantially the same time, regardless of his or her location on the planet, or the type of Internet-connection used by his or her client machine. Also, by using globally time-synchronized client machines, each competitor's response is securely time and space stamped at the client machine to ensure that competitor responses are resolved within microsecond accuracy.
Owner:REVEO
Ophthalmic surgery method using non-contact scanning laser
InactiveUSRE37504E1Low-powerLow-cost and effectiveLaser surgeryDiagnosticsSystem parametersOphthalmic surgery
A refractive laser surgery process is disclosed for using compact, low-cost ophthalmic laser systems which have computer-controlled scanning with a non-contact delivery device for both photo-ablation and photo-coagulation in corneal reshaping. The basic laser systems may include flash-lamp and diode pumped UV solid state lasers (193-215 nm), compact excimer laser (193 nm), free-running Er:glass (1.54 microns), Ho:YAG (2.1 microns), Q-switched Er:YAG (2.94 microns), and tunable IR lasers, (750-1100) nm and (2.5-3.2) microns. The advantages of the non-contact, scanning device used in the process over other prior art lasers include being safer, reduced cost, more compact and more precise and with greater flexibility. The theory of beam overlap and of ablation rate and coagulation patterns is also disclosed for system parameters. Lasers are selected with energy of (0.01-10) mJ, repetition rate of (1-10,000), pulse duration of 0.01 nanoseconds to a few hundreds of microseconds, and with spot size of (0.05-2) mm for use with refractive laser surgery.
Owner:LASERSIGHT TECH
Apparatus and method for the treatment of headache
A battery-operated transcutaneous electrical nerve stimulator (TENS) to treat headache pain in an abortive and / or preventive manner. The TENS unit and its electrodes are built into a unitary device which facilitates a self-administered treatment. In some embodiments, the pulses are monophasic. In other embodiments, pairs of biphasic pulses are provided, wherein each pair of biphasic pulses includes a first pulse having a first polarity separated by a gap in time from a second pulsed having an opposite polarity. In some embodiments, each pulse in each biphasic pair is of a duration equal to that of the other pulse of the pair. In some embodiments, the duration of each pulse is between about 50 microseconds and about 400 microseconds, and the gap in time between pulses of a pair is between about 50 and 100 microseconds.
Owner:COVALIN ALEJANDRO
Device for the electrotherapeutic treatment of tension headaches
A device is for the electrotherapeutic treatment of headaches such as tension headaches and migraines. An electrode support (10) has a shape and is size selected so as to allow, independently from the subject, the excitation of the afferent paths of the supratrochlear (2) and supraorbital (3) nerves of the ophthalmic branch (1) of the trigeminal nerve. An electrical circuit includes a programmable signal generator suitable for creating pulses of a duration of between 150 and 450 microseconds with a maximum increase in intensity of 0 to 20 milliamperes at a rate of less than or equal to 40 microamperes per second and with a step up in intensity not exceeding 50 microamperes.
Owner:ORSAN MEDICAL TECH
Devices and methods for non-invasive capacitive electrical stimulation and their use for vagus nerve stimulation on the neck of a patient
ActiveUS20120029591A1Avoid stimulationElectrotherapyMagnetotherapy using coils/electromagnetsMedicineNon invasive
A non-invasive electrical stimulation device shapes an elongated electric field of effect that can be oriented parallel to a long nerve, such as a vagus nerve in a patient's neck, producing a desired physiological response in the patient. The stimulator comprises a source of electrical power, at least one electrode and a continuous electrically conducting medium in which the electrode(s) are in contact. The stimulation device is configured to produce a peak pulse voltage that is sufficient to produce a physiologically effective electric field in the vicinity of a target nerve, but not to substantially stimulate other nerves and muscles that lie between the vicinity of the target nerve and patient's skin. Current is passed through the electrodes in bursts of preferably five sinusoidal pulses, wherein each pulse within a burst has a duration of preferably 200 microseconds, and bursts repeat at preferably at 15-50 bursts per second.
Owner:ELECTROCORE
High-frequency electroporation for cancer therapy
ActiveUS20120109122A1Enhanced couplingMore predictable and uniform treatment outcomesElectrotherapySurgical instruments for heatingDiseaseAdjuvant
The present invention relates to the field of biomedical engineering and medical treatment of diseases and disorders. Methods, devices, and systems for in vivo treatment of cell proliferative disorders are provided. In embodiments, the methods comprise the delivery of high-frequency bursts of bipolar pulses to achieve the desired modality of cell death. More specifically, embodiments of the invention relate to a device and method for destroying aberrant cells, including tumor tissues, using high-frequency, bipolar electrical pulses having a burst width on the order of microseconds and duration of single polarity on the microsecond to nanosecond scale. In embodiments, the methods rely on conventional electroporation with adjuvant drugs or irreversible electroporation to cause cell death in treated tumors. The invention can be used to treat solid tumors, such as brain tumors.
Owner:VIRGINIA TECH INTPROP INC
Interference Classification with Minimal or Incomplete Information
ActiveUS20110188544A1Amplitude-modulated carrier systemsAmplitude demodulationMonitor modeFrequency spectrum
Interference classification with minimal or incomplete information. Receivers in access points and in other network devices on a wireless digital network may be switched to a spectrum monitor mode in which they provide amplitude-versus-frequency information for a chosen part of the spectrum. This may be performed by performing a FFT or similar transform on the signals from the receiver. Receivers are calibrated with known interference sources in controlled environments to determine peaks, pulse frequency, bandwidth, and other identifying parameters of the interference source in best and worst case conditions. These calibrated values are used for matching interference signatures. Calibration is also performed using partial signatures collected over a short period in the order of microseconds. These partial signals may be used to detect interferers while scanning. Another aspect of the invention is to record the variation of noise floor in the presence of interference sources. Multiple interference sources may be detected. While data collection is performed in one or more APs, classification may be performed in theAP or on other systems associated with the network collecting and processing spectrum information from one or more APs.
Owner:HEWLETT-PACKARD ENTERPRISE DEV LP
Manufacturing method of silicon thin film solar cell
InactiveUS20050022864A1Lower performance requirementsIncrease currentFinal product manufactureSemiconductor/solid-state device manufacturingHigh frequency powerSilicon thin film
To uniformly form a silicon thin film for a solar cell, having an i layer formed with crystalline silicon, on a substrate of a large area to provide a high power solar cell, in a manufacturing method of a silicon thin film solar cell, a silicon thin film, having a structure such that an i layer is sandwiched between a p layer and an n layer, is formed on a substrate with a high frequency plasma CVD method, wherein i layer is formed with crystalline silicon using plasma with pulse-modulated high frequency power, one cycle of pulse modulation includes an ON state for outputting high frequency power and an OFF state for not outputting, an output waveform is modulated to be rectangular, a time of the ON state is 1-100 microseconds, and a time of the OFF state is 5 microseconds or longer.
Owner:SHARP KK
Electromagnetic energy distributions for electromagnetically induced mechanical cutting
Output optical energy pulses including relatively high energy magnitudes at the beginning of each pulse are disclosed. As a result of the relatively high energy magnitudes which lead each pulse, the leading edge of each pulse includes a relatively large slope. This slope is preferably greater than or equal to 5. Additionally, the full-width half-max value of the output optical energy distributions are between 0.025 and 250 microseconds and, more preferably, are about 70 microseconds. A flashlamp is used to drive the laser system, and a current is used to drive the flashlamp. A flashlamp current generating circuit includes a solid core inductor which has an inductance of 50 microhenries and a capacitor which has a capacitance of 50 microfarads.
Owner:BIOLASE TECH INC
Device and methods for non-invasive electrical stimulation and their use for vagal nerve stimulation
ActiveUS20110230938A1Avoid stimulationElectrotherapyArtificial respirationMedicineSacral nerve stimulation
A non-invasive electrical stimulation device shapes an elongated electric field of effect that can be oriented parallel to a long nerve, such as a vagus nerve in a patient's neck, producing a desired physiological response in the patient. The stimulator comprises a source of electrical power, at least one electrode and a continuous electrically conducting medium in which the electrode(s) are in contact. The stimulation device is configured to produce a peak pulse voltage that is sufficient to produce a physiologically effective electric field in the vicinity of a target nerve, but not to substantially stimulate other nerves and muscles that lie between the vicinity of the target nerve and patient's skin. Current is passed through the electrodes in bursts of preferably five sinusoidal pulses, wherein each pulse within a burst has a duration of preferably 200 microseconds, and bursts repeat at preferably at 15-50 bursts per second.
Owner:ELECTROCORE
FPGA matrix architecture
ActiveUS20130226764A1Guaranteed normal executionLower latencyFinanceTransmissionData processing systemLatency (engineering)
High volume data processing systems and methods are provided to enable ultra-low latency processing and distribution of data. The systems and methods can be implemented to service primary trading houses where microsecond delays can significantly impact performance and value. According to one aspect, the systems and methods are configured to process data from a variety of market data sources in a variety of formats, while maintaining target latencies of less than 1 microsecond. A matrix of FPGA nodes is configured to provide ultra-low latencies while enabling deterministic and distributed processing. In some embodiments, the matrix can be to configured to provide consistent latencies even during microburst conditions. Further book building operations (determination of current holdings and assets) can occur under ultra-low latency timing, providing for near instantaneous risk management, management, and execution processes, even under micro-burst conditions. In further embodiments, a FPGA matrix provides a readily expandable and convertible processing platform.
Owner:NOVASPARKS INC
Method and device for electro microsurgery in a physiological liquid environment
A method and device for electrical emulation of pulsed laser is disclosed. The device utilizes high voltage electrical discharges of sub-microsecond duration in a liquid medium to produce cavitation bubbles of sub-millimeter size for use in high speed precision cutting. Such bubbles are produced by a micro-electrode (1.6) having a central wire having a diameter of 1 microns to 100 microns embedded in an insulator. A coaxial electrode (1.9) surrounds the insulator, and may be spaced from the outer surface of insulator to provide a path for removing tissue.
Owner:NANOPTICS
High frequency electroporation for cancer therapy
ActiveUS20160287314A1Enhanced couplingMore predictable and uniform treatment outcomesElectrotherapySurgical instruments for heatingDiseaseIn vivo
Owner:VIRGINIA TECH INTPROP INC
High-voltage analog circuit pulser with feedback control
Owner:PULSE BIOSCI INC
Low inductance high energy inductive ignition system
PCT No. PCT / US96 / 19898 Sec. 371 Date Apr. 21, 1999 Sec. 102(e) Date Apr. 21, 1999 PCT Filed Dec. 12, 1996 PCT Pub. No. WO97 / 21920 PCT Pub. Date Jun. 19, 1997A high power, high energy inductive ignition system with a parallel array of multiple ignition coils Ti (2a, 2b) and associated 600 volt unclamped IGBT power switches Si (8a, 8b), for use with an automotive 12 volt storage battery (1), the system having an internal voltage source (12) to generate a voltage Vc approximately three times the peal primary coil current with coils Ti of low primary inductance of about 0,5 millihenry and of open E-type core structure for spark energy in the range of 120 to 250 mj, the system using a lossless snubber and variable control inductor (6) to provide very high circuit and component efficiency and high coil energy density, in mj / gm, three times that of conventional inductive ignition systems, and high output voltage of 40 kilovolts with fast rise time of 10 microseconds.
Owner:WARD MICHAEL A V
Method for electrochemical metallization and planarization of semiconductor substrates having features of different sizes
A method for filling recesses of different sizes on a semiconductor substrate comprising immersing a semiconductor substrate having a surface provided with recesses of different sizes in an electroplating bath containing ions of a metal to be deposited on the surface; immersing a counter electrode in the plating bath; passing an electric current between the substrate and the counterelectrode; wherein, in a first electroplating step, the electric current is a modulated reversing electric current comprising a train of pulses that are cathodic with respect to the substrate and pulses that are anodic with respect to the substrate, whereby the pulse train in the first step has a first period, the cathodic pulses have an on-time of from about 0.83 microseconds to about 50 milliseconds and the anodic pulses have an on-time of from about 42 microseconds to about 99 milliseconds, the cathodic and anodic pulses have a charge transfer ratio of the cathodic pulses to the anodic pulses that is greater than one; in a second electroplating step, the electric current is a, modulated reversing electric current comprising a train of pulses that are cathodic with respect to the substrate.
Owner:FARADAY TECH INC
Ion implantation and deposit method of high-power composite pulse by magnetic control sputtering
ActiveCN101838795AIncrease ionization rateHigh bonding strengthVacuum evaporation coatingSputtering coatingPhase differenceHigh pressure
The invention discloses an ion implantation and deposit method of high-power composite pulse by magnetic control sputtering, which belongs to the field of material surface treatment technology and solves the problems of large particles and low film deposit efficiency in an adopted method in which negative high voltage pulse is applied to a workpiece. The method disclosed by the invention comprises the steps of: 1. placing the workpiece on a sample platform in a vacuum chamber, connecting the workpiece with a high-voltage pulse power supply, and connecting a magnetic control sputtering target source with a magnetic control sputtering power supply; and 2. implanting and depositing: when the vacuum degree in the vacuum chamber is lower than 10-2Pa, introducing working gas until the vacuum degree in the vacuum chamber reaching 0.011-10 Pa, starting up the high-voltage pulse power supply, adjusting the voltage value of output pulse of the high-voltage pulse power supply to 0.5-100kV, adjusting the pulse frequency to 0-1000Hz, adjusting the pulse width to 0-500 microseconds, starting up the magnetic control power supply, adjusting required process parameters by direct-current luminance pre-ionization, and controlling the voltage phase difference of the two power supplies to be -1000-1000 microseconds to perform the ion implantation and deposit.
Owner:HARBIN INST OF TECH
Vagus nerve stimulation apparatus, and associated methods
InactiveUS20090105782A1Eliminate the problemEliminates battery life and replacement problemElectrotherapyArtificial respirationDiseasePower flow
Methods and apparatus for providing vagus nerve stimulation for the treatment of diseases such as depression and epilepsy that do not require an onboard, implanted power supply. Power may be supplied from outside of the body by near-field inductive coupling with an external power supply provided in a support article (e.g., garment) worn by the patient. Power may also be supplied by providing an antenna for harvesting ambient RF energy and converting it into DC power. In addition, the methods and apparatus provide for remote, wireless programming of the parameters that specify the nature of current pulses provided to the vagus nerve by probes implanted in the body of the patient. The preferred stimulation profile is 1-2 milliamp pulses of 250 microseconds in duration at a frequency of 20 to 30 Hz, wherein the profile is repeatedly on for 30 seconds and off for 5 minutes.
Owner:UNIVERSITY OF PITTSBURGH
Very high speed rate shaping fuel injector
ActiveUS7255290B2Simple processMinimize formationOperating means/releasing devices for valvesPiezoelectric/electrostriction/magnetostriction machinesParticulatesCombustion chamber
Owner:QUANTUM CONTROL WORKS L C
Radar level gauging using frequency modulated pulsed wave
ActiveUS20120169528A1Reduced Power RequirementsDecrease disturbing echoesLevel indicatorsAntenna detailsRadarCarrier signal
A method for measurement of a distance to a surface of a product kept in a tank method comprises transmitting a pulse train of distinct carrier wave pulses having a duration greater than 1 microsecond and shorter than 100 milliseconds, the pulse train has an average duty cycle of less than 50 percent, each pulse has a defined center frequency, selected according to a frequency scheme within a predetermined frequency range, greater than 5% of an average center frequency. The method further comprises correlating actual phase properties of received pulses with expected phase properties to provide an updated estimation of the distance.The present invention is based on transmitting a set of carrier wave pulses, each having a distinct frequency selected within a frequency range. The method is therefore referred to as a Frequency Modulated Pulsed Wave (FMPW).
Owner:ROSEMOUNT TANK RADAR
Fluorescence Detection
InactiveUS20080265177A1Bioreactor/fermenter combinationsBiological substance pretreatmentsUltravioletLight emission
A fluorescence detection system comprises a light source (22), dichroic mirror (32), excitation port (16), emission port (14), and a detector. The light source (22) is, for example, a pulsed ultraviolet LED, with a light emission that decays sufficiently rapidly to permit gated detection of fluorescence from a fluorescently-labelled species, at a time when it is distinguishable from autofluorescence. The detector is, for example, an electron multiplying CCD, with high gain on-chip amplification. A circuit (26) may be used to control a repeating cycle of (i) generation of a 20-200 microsecond UV. pulse; (ii) a gate delay of 1-5 microseconds; and (iii) a 10-800 microsecond detection period. This allows time-resolved-fluorescence-microscopy with real time or near real time operation.
Owner:MACQUARIE UNIV
System for plasma ignition by fast voltage rise
InactiveUS6633017B1Increase probabilityIncrease variabilityElectric discharge tubesArc welding apparatusSecondary electronsEngineering
An improved system of igniting a plasma using a rapid voltage rise and thus causing ions that may be pre-existing to create secondary electron emission or the like is provided. In one embodiment, the voltage rise can be timed to be comparable to the transit time of the electrons across the plasma. It can also be arranged to achieve a voltage rise in less than 1000 microseconds, to result in a transition time that is less than one hundred times the transit time, to maximize the emission of secondary electrons, or even to merely result in collision energies ranging from 5 to 500 electron volts. The transition time can be controlled through an ignition control that may be programmable, may involve charging output storage devices, or may involve delayed switching to supply the increased voltage to the plasma after the storage elements have been more fully charged.< / PTEXT>
Owner:ADVANCED ENERGY IND INC
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