219 results about "Pulse processing" patented technology

Apparatus and method assure the electrical characteristics of a stimulation waveform to an electrode of an Implantable Neuro Stimulator. The embodiment comprises a regulator, a measurement module, a generator, and a processor. The generator provides an input signal to the regulator. The regulator consequently regulates the input signal in order to form a pulse that is applied to the electrode. The processor instructs the measurement module to perform an electrical measurement that is indicative of an amplitude of the pulse. If the electrical measurement is sufficiently different from a desired value, the processor instructs the generator to be reconfigured in order that the amplitude of the pulse is within an acceptable value. A redundant capacitor pair may be inserted in a capacitor arrangement in order to compensate for a reduced battery voltage, or a detected faulty component such as a capacitor or a regulator may be replaced with a redundant component.

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 method and apparatus for discriminating the types of radiation interacting with an integrated radiation detector having of a pulse-mode operating photosensor which is optically coupled to a gamma-ray scintillator sensor and a neutron scintillator sensor and uses an analog to digital converter (ADC) and a charge to digital converter (QDC) to determine scintillation decay times and classify radiation interactions by radiation type. The pulse processing provides for, among other things, faithful representation of the true energy spectrum of the gamma radiation field and allows for radioisotope identification by searching for the presence of characteristic energy lines in the gamma energy spectrum. The pulse shape discrimination method ensures that the high sensitivity and resolution of the isotope identification function is not affected during operation in mixed neutron-gamma fields.

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.

The invention relates to the technical field of speech, in particular to a real-time speech endpoint detection method and device. The method comprises the following steps that signal framing and emphasis are carried out; pulse removal processing is carried out; direct current components are removed; the short-time energy and zero-crossing rate of each frame of signal are calculated; windowing processing is carried out; spectrum reduction processing is carried out; spectral entropy is calculated; transformation smooth spectral entropy is calculated; a speech frame and a noise frame are preliminarily judged; the transformation smooth spectral entropy and a threshold are processed; a start frame and end frame in a speech segment are judged. The real-time speech endpoint detection method and device have the advantages that according to the conditions under which a signal is judged and a judged result, thresholds of parameters, such as a spectrum reduction threshold, the transformation smooth spectral entropy, the corresponding short-time energy, corresponding short-time average energy and a spectrum reduction power spectrum are weighted and updated, so that the thresholds are more andmore accurate, and finally the judged speech start frame and end frame are also more and more accurate; the method can efficiently and accurately detect speech in real time.

The circuit utilized for measuring resistances by using pulse modulation technique comprises the capacitance C1, the charging circuit, the discharging circuit, the comparator, the controller and the pulse-processing module etc. and the output of the comparator controls On / Off of the charging circuit and the discharging circuit. The resistance value can be calculated out from the number of the charging and the discharging period. The method is easy to be realized by using single chip with comparator build in, providing the measuring function of multi-channel, multi-range and high accuracy. Combining with thermistor, hygristor and photoresistor, the invented circuit can constitute the measuring, controlling and alarming devices based on temperature, humidity and light intensity.

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.

The invention discloses a method for improving roundness of a metal thin-wall cylindrical workpiece by pulsed magnetic pressure, and relates to a method for improving roundness of a metal thin-wall cylindrical workpiece. The method solves the problems that the existing cylindrical workpiece shape correction method has the disadvantages of complex mechanism and die, uneasy operation and low accuracy of shape correction, and the existing cylindrical workpieces have the disadvantages of easy wearing surface, residual stress, short service life, difficult sealing, high cost and difficult operation, both of which are not favorable for the small-batch and diversified development trend. The method comprises the following steps: step one: the metal thin-wall cylindrical workpiece is arranged in a high-accuracy shape correction die, and magnetic impulse processed coils are placed in the cylindrical workpiece; step two: a high-frequency pulse capacitor bank is used for discharging the magnetic pulse processing coils, high-frequency pulse acts on the cylindrical workpiece to cause the cylindrical workpiece to generate high-speed deformation and generate impact contact and adhere to the die. The invention has the advantages of simple mechanism and die, high machining accuracy, long service life and low cost, and is favorable for the small-batch and diversified development trend, etc.

It is possible to effectively configure an antenna system of simple structure in a limited space. A mono pulse radar device includes an antenna unit having an array antenna (wide-beam array antenna)(area K1) formed by a part of the antenna element as a constituting element of the antenna unit and narrow-beam array antennas formed with a narrower beam width than the array antenna. Mono pulse processing is performed according to an output of a predetermined pair of array antennas (areas K2, K3) among the plurality of array antennas formed as the narrow-beam array antennas.

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 charged particle beam apparatus that easily discriminates the angles and energy of the SE or the BSE, and images information necessary for a sample to be observed.The charged particle beam apparatus having a charged particle source that emits a primary charged particle beam, a condenser lens that condenses the primary charged particle beam on a sample, and a detector that detects secondary charged particles emitted from a radiated point on the sample, the charged particle beam apparatus including: a pulse processing unit that subjects a signal from the detector to pulse processing, and creates energy distribution information of the secondary charged particles; and a control unit that selects information in an arbitrary energy region of the energy distribution information, and display an image on a display unit.

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.

A plasma processing method for a plasma processing device is provided. The plasma processing device includes a reaction chamber, multiple Radio Frequency (RF) power supplies with different RF frequency outputs apply RF electric fields to the reaction chamber, the output of at least one pulse RF power supply has multiple output states, and the processing method includes a match frequency obtaining step and a pulse processing step. In the match frequency obtaining step, the output state of the pulse RF power supply is switched to make the reaction chamber have multiple impedances to simulate the impedances in the pulse processing step. The output frequencies of the variable frequency RF power supply are adjusted to match the simulated impedances. The adjusted output frequencies are stored as match frequencies. In the subsequent pulse processing step, the fast switched impedances are instantly matched by the stored match frequencies.

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.

A radio frequency identification device having sensing elements incorporated in the clock generators of its tags, which generate a leading code and an identification code. In the interrogator, the leading code is detected and its pulse width is measured for calculating sensing values and the baud rate in receiving the identification code. No analog to digital converter is needed in digitizing sensing values and only discrete signals exist in sensing signal generation and communication. The tag device is insensitive to variations in its power supply voltage obtained from a continuous wave RF carrier.

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.

The invention discloses a high-precision frequency measurement system based on a moving radiation source, which belongs to the technical field of frequency measurement. The high-precision frequency measurement system includes a reference signal source module, a measured signal source module, a first frequency conversion module, a second frequency conversion module, an analog signal processing module, a frequency divider module, a phase-locked frequency multiplier module, a pulse edge extraction module, a different-frequency quantization phase discrimination module, a phase difference pulse processing module, a pulse counting module and a count value storage module. By using a different-frequency quantization phase discrimination processing method, the precision of frequency measurement canbe greatly improved, and the survivability and safe reliability of the system under a complex background can be enhanced. The system is an important improvement to the prior art.

The invention belongs to the data processing field and relates to an adaptive forgetting factor-based clutter image update method and apparatus. The objective of the invention is to solve problems existing in the prior art. According to the adaptive forgetting factor-based clutter image update method, a forgetting factor is determined adaptively through similar measurement degree of observation values of clutter map units relative to historical clutter estimated values, and the determination steps of the forgetting factor are provided; when a signal to clutter ratio changes randomly, the adaptively variable forgetting factor can track the change rule of the signal to clutter ratio; a false alarm rate is maintained, and the stability of a clutter map is maintained. The adaptive forgetting factor-based clutter image update method includes the following steps that: delta theta and delta rho in a two-dimensional clutter map are set, and the sizes of the azimuth and range of clutter map units are respectively integer multiples of the sizes of the azimuth and range of a radar distinguishing unit, and a two-dimensional clutter map space is divided into a plurality of clutter map units delta S; in a clutter map establishment phase, radar original video signals are adopted as input, and a unit maximization method is adopted to perform intra-pulse processing; and after clutter map establishment is completed, the clutter map is updated through adopting a unit averaging method.

The invention relates to a technology for eliminating residual stress in steel, in particular to a pulse current processing method for eliminating the residual stress in the steel, which can effectively eliminate the residual stress in the steel and basically not influence organization structure in the steel simultaneously. The method carries out pulse current processing to the steel (such as quenching) with the residual stress, and the technological parameters of the pulse current comprise that discharge period is 10Mus to 1000Mus, maximum peak value current density is 10<3> to 10<5>A / cm<2>, and the duration of a single pulse is 10 to 10000Mus. The method is characterized in that: simultaneously maintaining the needed micro-structure, part of the material after pulse processing still fully eliminates the residual stress in the material; furthermore, the time of the pulse current processing is short, the efficiency is high, and the operation is convenient.

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.

Data acquired using a pulsed nuclear source are susceptible to two sources of error. One error is due to large statistical noise towards the end of an acquisition window. Another source of error is the contamination of the early portion of the data by borehole and other effects. The beginning of the processing window is adjusted based on the signal level at the end of the processing window for the preceding pulsing of the source. The end of the processing window is derived from statistical considerations.

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.

A fingerprint sensing device that measures the capacitance between an array of electrode plates and finger skin using pulse processing, in which pulse width rather than voltage level, is used for capacitance measurement and digital signal conversion. A pulse, the width of which is compared and adjusted with that of a reference pulse, is generated when voltage at sensing electrodes in discharging is compared with a reference voltage. The comparison results are then digitalized in a grade image sensor or output directly in a binary image sensor. The sensor can communicate with a CPU using serial communication, parallel communication, or memory map scheme. Since no A / D is used, there is no extra time and hardware cost for the conversion from analog signals to digital signals. Due to the pulse processing nature, the circuits can be configured insensitive to the change or fluctuation in voltage supply. This feature enables the sensing device work with a variety of voltages, and thus it can be better used in portable, battery powered or passive devices.

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.