200 results about "Pulse pattern" patented technology

An electroporation device which may be used to effectively facilitate the introduction of a macromolecule into cells of a selected tissue in a body or plant. The electroporation device comprises an electro-kinetic device (“EKD”) whose operation is specified by software or firmware. The EKD produces a series of programmable constant-current pulse patterns between electrodes in an array based on user control and input of the pulse parameters and allows the storage and acquisition of current waveform data. The electroporation device also comprises a replaceable electrode disk having an array of needle electrodes, a central injection channel for an injection needle, and a removable guide disk.

Apparatus and methods for encoding sensory input information into patterns of pulses and message multiplexing. In one implementation, the patterns of pulses are polychronous (time-locked by not necessary synchronous), and a retinal prosthetic encodes the input signal into the polychronous patterns for delivery via stimulating electrodes. Different polychronous patterns simultaneously encode different sensory signals; (such as different features of the image), thus providing for message multiplexing. Increasing data transmission capacity allows for a reduction in the number of electrodes required for data transmission. In one implementation, an adaptive feedback mechanism is employed to facilitate encoder operation. In another aspect, a computer vision system is described.

A directed sequential hazard assessment weather radar system detects weather and hazards with low latency and high confidence in a hazard detection mode to detect a region of reflectivity and changes to an assessment mode after detecting the region of reflectivity. The weather radar system scans a volume in front of an aircraft to detect the region of reflectivity in the hazard detection mode using a multiscan process and a reflectivity pulse pattern. The weather radar system determines presence of a hazard in the region of reflectivity after detecting the region. The weather radar system changes to a turbulence pulse pattern in the assessment mode and scans the region of reflectivity with an auxiliary sweep to determine turbulence. The directed sequential hazard assessment weather radar system performs a qualification process by scheduling an additional radar scanning auxiliary sweep to determine if the turbulence is real.

An autonomous active medical implantable device, with a power supply and a wake-up circuit that responds to receipt of specific pulses transmitted through the interstitial tissues of the body transmitter device (40) generates trains of modulated pulses applied to electrodes (22, 24), and a receiver (50) processes (e.g., filter, amplify and demodulate) pulses collected on electrodes (22′, 24′). The receiver circuits (50) are selectively activated from a dormant (sleep) state in which they are not powered by a power source (34), to an operational (active) state in which they are powered and able to process (e.g., filter, amplify and demodulate) the collected pulses specific wake-up pulse train, configured in a predetermined characteristic pulse pattern triggers passive wake-up circuits (66) in the receiver (50) to switch the receiver circuits from the sleep state to the operational state.

An autonomous active medical implantable device, with a power supply and a wake-up circuit that responds to receipt of specific pulses transmitted through the interstitial tissues of the body. A transmitter device (40) generates trains of modulated pulses applied to electrodes (22, 24), and a receiver (50) processes (e.g., filter, amplify and demodulate) pulses collected on electrodes (22′, 24′). The receiver circuits (50) are selectively activated from a dormant (sleep) state in which they are not powered by a power source (34), to an operational (active) state in which they are powered and able to process (e.g., filter, amplify and demodulate) the collected pulses. A specific wake-up pulse train, configured in a predetermined characteristic pulse pattern, triggers passive wake-up circuits (66) in the receiver (50) to switch the receiver circuits from the sleep state to the operational state.

Introduce a pulse length control mechanism to generate virtual multi-level output pulses for a Class-D Amplifier, which has only 2 physical output levels. Typically a Sigma-Delta-Modulator converts the input signal into high frequency low bit rate. The disclosed invention adds functions to transform the SDM signal into pulses with equivalent multi-level time-voltage areas and adds a pulse-length-control mechanism to produce various output pulse patterns, where the summations of the positive and negative pulses, within one sampling period, result in time-voltage area values, corresponding to 3 or more digital levels. Thus the invention produces higher signal quality at lower sampling rates.

Sensory input processing apparatus and methods useful for adaptive encoding and decoding of features. In one embodiment, the apparatus receives an input frame having a representation of the object feature, generates a sequence of sub-frames that are displaced from one another (and correspond to different areas within the frame), and encodes the sub-frame sequence into groups of pulses. The patterns of pulses are directed via transmission channels to detection apparatus configured to generate an output pulse upon detecting a predetermined pattern within received groups of pulses that is associated with the feature. Upon detecting a particular pattern, the detection apparatus provides feedback to the displacement module in order to optimize sub-frame displacement for detecting the feature of interest. In another embodiment, the detections apparatus elevates its sensitivity (and / or channel characteristics) to that particular pulse pattern when processing subsequent pulse group inputs, thereby increasing the likelihood of feature detection.

A system for accurate measurement and monitoring of AC or DC electrical current flowing through electrical conductors includes one or more current sensors, a receiver, and one or more calibration signal generators (“CSG's”) that can be plugged into outlets or otherwise coupled to the conductors so as to add automated, time-varying calibration signals to the conductors, such as current pulses or pulse patterns. The sensors are placed on a circuit breaker panel, around a cable, or otherwise near the conductors. The receiver distinguishes the calibration signals by their timing, pulse patterns, frequencies, or other time-varying features, uses their known amplitudes to calibrate the sensitivity of each sensor to each conductor, and determines the current flowing in each conductor. Among other applications, the invention can monitor building current usage, CO and data center power usage and distribution, and power line current leakage, and can calibrate invasive and / or non-invasive current sensors.

A system for forming a periodic pulse pattern in a sample includes a movable stage having the sample loaded thereon, a pulse laser for generating a laser beam of pulses, an objective lens for focusing the laser beam to the sample to form a pattern of pulses in the sample, and a controller for adjusting the movement speed of the movable stage to set a period of the pulse pattern. The pulse pattern includes a spot pattern or a line pattern made by a slit provided between the pulse laser and the objective lens.

Audible noise in resonant switching power converter during low-power burst mode operation is reduced by spreading the spectrum generated by the bursts, thereby reducing the amplitude of audio spectrum peaks in the current supplied through the resonant tank from a switching circuit. The spreading can be accomplished by varying the intervals between the bursts and / or by varying a pulse pattern within the bursts. The pulse pattern within the bursts can be varied by varying the number of pulses in the bursts, the polarity of the initial pulse of the bursts, and / or the duration of pulses within the bursts either uniformly or randomly. The burst pulse pattern may also be selected in alternation from a set of pulse patterns stored in a memory and the selection may be made randomly or systematically.

A method for displaying images on a display having backlight is disclosed, where the images is updated periodically with a period. The method comprises the steps of: generating a signal with a pulse pattern for each period depending on the contents of an image to be displayed in that period; and activating backlight in accordance with the signal. Further, a display (100) comprising a display panel (102) and a backlight unit, wherein the backlight unit comprises a controller (104) and a lighting device is disclosed. The controller (104) is arranged to generate a control signal, and the lighting device is arranged to provide backlight to the display panel (102) according to the control signal, wherein the control signal comprises a pulse pattern depending on contents of displayed images.

Disclosed are methods and devices for ultrasound-mediated non-invasive deep brain neuromodulation impacting one or a plurality of points in a neural circuit using intersecting ultrasound beams. Depending on the application, this can produce short-term effects (as in the treatment of post-surgical pain) or long-term effects in terms of Long-Term Potentiation (LTP) or Long-Term Depression (LTD) to treat indications such as neurologic and psychiatric conditions. Multiple beams intersect and summate at one or a plurality of targets. The ultrasound transducers are used with control of direction of the energy emission, intensity, frequency (carrier frequency and / or neuromodulation frequency), pulse duration, pulse pattern, and phase / intensity relationships to targeting and accomplishing up-regulation and / or down-regulation.

A neurostimulation system configured for providing neurostimulation therapy to a patient. A user customizes a pulse pattern on a pulse-by-pulse basis. Electrical stimulation energy is delivered to at least one electrode in accordance with the customized pulse pattern.

In related art technique, an average neutral point voltage is detected via a low-pass filter. Time constant of the low-pass filter must be set to cover the entire output frequency band of an inverter and voltage fluctuation due to modulated signal must be separated from that due to a short circuit to ground. According to the present invention, whether abnormality such as a short circuit to ground or to supply occurs in output lines can be determined based on an actual neutral point voltage of a motor, which changes in a stepwise fashion in conformity to a PWM pulse pattern output by an inverter device, and a normal neutral point voltage which depends on a PWM pattern output by the inverter device. Highly reliable abnormality detection in accordance with the waveform of the neutral point voltage and stable abnormality detection not depending on the inverter output frequency are feasible.

Systems and methods for stimulation of neurological tissue generate stimulation trains with temporal patterns of stimulation, in which the interval between electrical pulses (the inter-pulse intervals) changes or varies over time. Compared to conventional continuous, high rate pulse trains having regular (i.e., constant) inter-pulse intervals, the non-regular (i.e., not constant) pulse patterns or trains that embody features of the invention provide a lower average frequency.

In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into segments, each of which is divided into a plurality of subintervals. All of the pulses within the segments have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different segments by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head.

When a space region shorter than the radius of a beam spot is formed, pre-heating with an assist pulse is not performed, and an off pulse pattern is fixed at a base power level. When a space region longer than the radius of the beam spot and shorter than the diameter of the beam spot is formed, an assist pulse is applied to the end of the space region to be formed. The length of the assist pulse is made greater, the longer the space region to be formed. Further, when a space region longer than the diameter of the beam spot is formed, an assist pulse is applied to the end of the space region to be formed, and the length of the assist pulse is kept constant regardless of the length of the space region to be formed.

According to the invention, a record mark is formed by: using one ON-pulse pattern and one ON-pulse pattern following it when the record mark to be formed is shorter than a specified length X (nT<X); and using two ON-pulse patterns and two ON-pulse patterns respectively following them when the record mark to be formed is longer than the specified length X (nT>X). This makes is possible to secure a heat amount per unit time sufficiently in forming a short record mark even when a targeted recording linear velocity is high. Also, an unwanted heat pocket becomes hard to arise in the record layer even when a sufficient heat amount per unit time is secured in forming a long record mark. Therefore, it becomes possible to form a record mark having a good shape even when data is recorded at a high linear velocity.

A method is provided for remote controlling of mouse cursor functions of a computer device is disclosed. The method includes: tracking movement of a handheld pointing device in a three dimensional monitoring space based on a directional carrier sent by the handheld pointing device; modulating the directional carrier with a pulse pattern based on a corresponding manual operation action at the handheld pointing device; converting the tracked movement of the handheld pointing device in corresponding movement information; converting the movement information of the handheld pointing device in valid desktop coordinates for the computer device and moving a mouse cursor to these coordinates; demodulating the directional carrier and evaluating the pulse pattern in order to determine a corresponding manual operating action at the handheld pointing device; and taking corresponding action if a defined manual operating action at the handheld pointing device is determined.

A method for producing a set of inbound pulse patterns and detection vectors for lengths longer than 4 cycles in an AC waveform. These are used for generating inbound messages in a two-way automatic communication system (TWACS). The method uses Hadamard matrices adapted to generate a set of detection vectors by permuting rows of a matrix and removing certain columns of the matrix to meet system design requirements. The method can be extended to any length and modified to accommodate multiple pulses per half-cycle to support higher data rates.

A non-contact power transfer apparatus includes a power transmission unit including a power transmission coil, a power transmission circuit, a current detection circuit, and a unit detection means and a first microcomputer with a control circuit for controlling each of the circuits. The non-contact power transfer apparatus also includes a power reception unit having a power reception coil, a rectification smoothing circuit, a series regulator, a charge battery unit with a rechargeable battery, a switching element for pulse-charging and a second microcomputer with a control circuit for controlling the series regulator and the switching element. As such, the power reception unit receives power via the power reception coil, while the rectification smoothing circuit and series regulator generate a set voltage. The set voltage is used to start the second microcomputer to apply an initial reset and a pulse pattern as an ID authentication pattern to the switching element.

Methods and systems for non-invasive neuromodulation of the spinal cord utilize a transducer to deliver pulsed ultrasound energy to up regulate or down regulate neural targets for the treatment of pain and other disease conditions. The systems provide control of direction of the energy emission, intensity, frequency, pulse duration, pulse pattern, mechanical perturbation, and phase / intensity relationships to achieve up regulation and / or down regulation. One embodiment focuses an elongate tubular ultrasound beam which can be aligned with a target region of the spinal cord.

There is provided an inkjet head printing device, which includes an inkjet head having an ink flow channel unit and a piezoelectric actuator unit, and a pulse generator that determines first pulse patterns to be applied to electrodes respectively corresponding to nozzles determined to eject the ink, each of the first pulse patterns having a first potential which causes each of the plurality of nozzles to eject the ink. The pulse generator further determines a second pulse pattern to be applied to at least one of electrodes respectively corresponding to nozzles determined not to eject the ink, the second pulse pattern having a second potential which does not cause each of the plurality of nozzles to eject the ink.

A portable hand-held battery powered eye pattern analyzer is provided that can analyze signal quality of a high speed digital communication network. The system is 10 times smaller in volume and 4 times lighter than the bench-top equivalent instruments. The system includes a housing containing a display, keypad, power supply, battery pack, and RF sampler board along with connections for electrical inputs, optical inputs, clock signal inputs, and clock recovery signal inputs. The sampler circuit board can support connections, such as a USB plug for attachment to a personal computer. The RF sampler board contains the following elements: (1) A dual sampler for two-channel electrical inputs. (2) An Optical-to-Electrical O / E conversion module. (3) A clock recovery unit (CRU) module to recover the clock from the electrical or optical pulse pattern signal. (4) A trigger circuit that accepts an input clock and uses that clock to trigger the sampling of the data signal. (5) A PRBS generator that could be used as stimulus for testing high speed devices, and (6) A controller such as an FPGA that processes the sampled signals and provides statistical analysis along with eye patterns to a display as controlled using the keyboard.

A neurostimulation system configured for providing neurostimulation therapy to a patient. A user customizes a pulse pattern on a pulse-by-pulse basis. Electrical stimulation energy is delivered to at least one electrode in accordance with the customized pulse pattern.

In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into portions, each of which is divided into a plurality of subintervals. All of the pulses within the portions have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different portions by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head.

A method and system for reconfiguring a multi-dimension sound system is disclosed. The method and system include a remote control that is capable of emitting a low-frequency sound wave pulse pattern, and a plurality of speakers, wherein each speaker includes a pulse counter that counts a number of sound wave pulses received from the remote control over a predetermined time period. The method and system further include an audio receiver that includes a digital audio encoding system. The receiver uses the respective sound wave pulse count from each of the speakers to compute the distance between the remote control and each speaker, and programs the digital audio encoding system with speaker delay times based on the computed distances.

A sensor includes a light source to emit a pulse light, a light receiver to receive light, emitted from the light source and reflected from an object, a range information acquisition unit to calculate information of a range to the object based on light emission timing at the light source and light reception timing at the light receiver and a speed of the pulse light emitted from the light source, and a pulse controller to control a pulse pattern of the pulse light emitted from the light source based on the range information calculated by the range information acquisition unit.

Systems and methods for stimulation of neurological tissue and generation stimulation trains with temporal patterns of stimulation, in which the interval between electrical pulses (the inter-pulse intervals) changes or varies over time. The features of the stimulation trains may be selected and arranged algorithmically to by clinical trial. These stimulation trains are generated to target a specific neurological disorder, by arranging sets of features which reduce symptoms of that neurological disorder into a pattern which is effective at reducing those symptoms while maintaining or reducing power consumption versus regular stimulation signals. Compared to conventional continuous, high rate pulse trains having regular (i.e., constant) inter-pulse intervals, the non-regular (i.e., not constant) pulse patterns or trains that embody features of the invention provide increased efficacy and / or a lower than average frequency.