214 results about "Pulse processing" patented technology

Pulsed processing methods and systems for heating objects such as semiconductor substrates feature process control for multi-pulse processing of a single substrate, or single or multi-pulse processing of different substrates having different physical properties. Heat is applied a controllable way to the object during a background heating mode, thereby selectively heating the object to at least generally produce a temperature rise throughout the object during background heating. A first surface of the object is heated in a pulsed heating mode by subjecting it to at least a first pulse of energy. Background heating is controlled in timed relation to the first pulse. A first temperature response of the object to the first energy pulse may be sensed and used to establish at least a second set of pulse parameters for at least a second energy pulse to at least partially produce a target condition.

A gamma ray detector assembly for a borehole logging system that requires the measure of gamma radiation with optimized gamma ray energy resolution and with fast emission times required to obtain meaningful measurements in high radiation fields. The detector assembly comprises a lanthanum bromide (LaBr3) scintillation crystal and a digital spectrometer that cooperates with the crystal to maximize pulse processing throughput by digital filtering and digital pile-up inspection of the pulses. The detector assembly is capable of digital pulse measurement and digital pile-up inspection with dead-time less than 600 nanoseconds per event. Pulse height can be accurately measured (corrected for pile-up effects) for 2 pulses separated by as little as 150 nanoseconds. Although the invention is applicable to virtually any borehole logging methodology that uses the measure of gamma radiation in harsh borehole conditions, the invention is particularly applicable to carbon / oxygen logging.

In a device for material processing by laser radiation, including a source of laser radiation emitting pulsed laser radiation for interaction with the material; optics focusing the pulsed processing laser radiation to a center of interaction in the material and a scanning unit shifting the positions of the center of interaction within the material. Each processing laser pulse interacts with the material in a zone surrounding the center of interaction assigned to the laser pulse so that material is separated in the zones of interaction. A control unit controls the scanning unit and the source of laser radiation such that a cut surface is produced in the material by sequential arrangement of zones of interaction. The control unit controls the source of laser radiation and the scanning unit such that adjacent centers of interaction are located at a spatial distance a ≦10 μm from each other.

A method of adjusting a response of an energy measuring filter, such as an FIR filter, of a pulse processor based on a slope of a preamplifier signal having a plurality of step edges each corresponding to a respective photon is provided that includes receiving a digital version of the preamplifier signal comprising a plurality of successive digital samples each having a digital value, the preamplifier signal having a portion defined by a first one of the step edges and a second one of the step edges immediately following the first one of the step edges, using the digital values of each of the digital samples associated with the portion to determine an average slope of the portion normalized by a length of the portion, and using the average slope of the portion normalized by a length of the portion to correct the response of the energy measuring filter.

An amplifier capable of driving an analog load is provided. The amplifier can be constructed and arranged to operate as at least one circuit selected from the group consisting of a class D amplifier, voltage regulator, audio amplifier, servo amplifier, servo control, digital control, switching power supply, and switching power amplifier. The amplifier comprises a sigma delta modulator (SDM), a pulse processing circuit, an output stage, and a feedback loop. The SDM produces a plurality of noise-shaped output pulses based upon an input signal (e.g., an analog input signal) to the amplifier and an error signal. The pulse processing circuit processes at least a portion of the plurality of noise-shaped output pulses to ensure that each of the noise-shaped output pulses in the portion contains an amount of energy that is as close as possible to the amount of energy in the other pulses. The output stage is coupled to the pulse processing circuit and has first state wherein the output stage provides analog noise-shaped output energy pulses to a load and a second state where the output energy delivered is essentially zero. The feedback loop is coupled between the output stage and the SDM. The feedback loop samples the energy provided to the load during the first state by measuring the load during the second state and generates an error signal based on the difference between the sampled portion of the noise-shaped output pulses and the input signal to the amplifier.

System for detection and depiction of objects in the path of marine vessels and for warning about objects that may constitute a risk to the navigational safety. The system includes a sweeping unit for illumination of objects within the field of view of the system, including a light source which emits a beam within the field of view of the system, an optical sensor and pulse processing unit including optical detectors for monitoring of the beam output power and generation of a start pulse for measurement of distance, for detection / reception of radiant energy reflected from objects, including measurement of distance to the reflecting object(s) based on the time delay between emitted and reflected light, including energy and peak effect of the pulses. The sweeping unit sweeps the beam and the optical detector's instantaneous field of view over the sweep area, by means of first and second sweeping mechanisms, to obtain directional information related to the instantaneous radiation direction relative to the vessel.

The invention discloses a method for removing the blockage of an oil-water well through magnetic positioning pulse acidification, which is used for acidifying an oil well in an oil field. The method comprises the following steps of: clearing and reshaping a mine shaft with a drift size gauge, washing the mine shaft with active water, and substituting acidizing fluid for the active water in an oil pipe until the active water reaches the middle part of an oil layer; and lifting an oil outlet pipe, loading in a high-power pulse processing device, magnetically positioning a perforation interval of required measurement, checking data, starting the device to process, lifting the device to an interval needing to be processed to process again after meeting a design requirement, taking out the high-power pulse processing device after processing, loading a pump and completing the well after discharging liquid from a production well, and completing the well after loading a production oil pipe into a water injection well to backwash the water injection well. The method has the advantages that: the high-power pulse processing device can precisely position the perforation interval of the oil-water well; and after processing with the acidizing fluid during pulse processing, the processing radius and the processing efficiency of the acidizing fluid can be effectively guaranteed and blocking substances in ducts can be more effectively corroded.

A method of adjusting a response of an energy measuring filter, such as an FIR filter, of a pulse processor based on a slope of a preamplifier signal having a plurality of step edges each corresponding to a respective photon is provided that includes receiving a digital version of the preamplifier signal comprising a plurality of successive digital samples each having a digital value, the preamplifier signal having a portion defined by a first one of the step edges and a second one of the step edges immediately following the first one of the step edges, using the digital values of each of the digital samples associated with the portion to determine an average slope of the portion normalized by a length of the portion, and using the average slope of the portion normalized by a length of the portion to correct the response of the energy measuring filter.

The invention discloses an underwater radiation monitoring method and system. The underwater radiation monitoring system comprises a detecting module, a pulse processing module, an energy spectrum analyzing module and a power supply module, wherein the detecting module is used for detecting rays emitted by radiating particles in the water and converting the rays into electric pulse signals, and the detecting module comprises a plurality of detectors; the pulse processing module is used for amplifying and screening the electric pulse signals to generate pulse energy spectrum data; the energy spectrum analyzing module is used for analyzing pulse energy spectrum data by an anticoincidence method and a virtual efficiency graduation program to obtain nuclide activity concentration of radioactive substances; and the power supply module is used for supplying power to the detecting module, the pulse processing module and the energy spectrum analyzing module. According to the system of the embodiment of the invention, the plurality of the detectors are used for converting the rays emitted by the radiating particles in the water into electric pulse signals for monitoring, and the energy spectrum analyzing module is used for analyzing the measured signals, so that the nuclide activity concentration of radioactive substances is identified, the measuring efficiency and the nuclide distinguishing effect of the system are improved, and the influences of the environment radioactive factors to the measured result are lowered.

Processing workpieces such as semiconductor wafers or other materials with a laser includes selecting a target to process that corresponds to a target class associated with a predefined temporal pulse profile. The temporal pulse profile includes a first portion that defines a first time duration, and a second portion that defines a second time duration. A method includes generating a laser pulse based on laser system input parameters configured to shape the laser pulse according to the temporal pulse profile, detecting the generated laser pulse, comparing the generated laser pulse to the temporal pulse profile, and adjusting the laser system input parameters based on the comparison.

A device for material processing by laser radiation, including a source of laser radiation emitting pulsed laser radiation for interaction with the material, optics focusing the pulsed processing laser radiation to a center of interaction in the material, and a scanning unit shifting the positions of the center of interaction within the material. Each processing laser pulse interacting with the material in a zone surrounding the center of interaction assigned to the laser pulse so that material is separated in the zones of interaction. A control unit controls the scanning unit and the source of laser radiation such that a cut surface is produced in the material by sequential arrangement of zones of interaction. The control unit controls the source of laser radiation and the scanning unit such that adjacent centers of interaction are located at a spatial distance a ≦10 μm from each other.

The invention relates to a method and a pulse processing circuit (100) for the processing of current pulses (CP) generated by incident photons (X) in a piece of converter material, for instance in a pixel (11) of a radiation detector. Deviations of the pulse shape from a reference are detected and used to identify pulse corruption due to pile-up effects at high count rates and / or charge sharing between neighboring pixels. The deviation detection may for instance be achieved by generating, with a pulse shaper (110), bipolar shaped pulses from the current pulse (CP) and / or two shaped pulses of different shapes which can be compared to each other.

An opto-electronic device (100) for processing optical and electric pulses includes a photoconductor device (10) with a sensor section (11) which is made of a band gap material and which has electrical sensor contacts (12, 13), and a signal processing device (20) which is connected with the sensor contacts (12, 13), wherein the photoconductor device (10) is adapted to create a photocurrent between the sensor contacts (12, 13) in response to an irradiation with ultra-short driving laser pulses (1) having a photon energy smaller than the energy band gap of the band gap material, having a non-zero electric field component (3) oriented parallel with a line (4) between the electrical sensor contacts (12, 13), and causing a charge carrier displacement in the band gap material, and wherein the signal processing device (20) is configured for an output of an electric signal being characteristic for at least one of carrier-envelope phase (CE phase), intensity, temporal properties, spectral intensity and spectral phase of the driving laser pulses (1). Furthermore, a laser source device including the opto-electronic device and pulse processing method for processing optical and electric pulses are described.