270results about How to "Reduce Interfering Signals" patented technology

This invention is in the field of medical devices. Specifically, the present invention provides portable medical devices that allow real-time detection of analytes from a biological fluid. The methods and devices are particularly useful for providing point-of-care testing for a variety of medical applications.

A method and monitor for monitoring vital signs. In one embodiment, the vital signs monitor includes a housing sized and shaped for fitting adjacent the ear of a wearer and an electronic module for measuring vital signs. The electronic module for measuring vital signs is located within the housing and includes a plurality of vital signs sensing modules in communication with a processor. The plurality of sensing modules includes at least two of the modules selected from the group of a ballistocardiographic (BCG) module, a photoplethysmographic (PPG) module, an accelerometer module, a temperature measurement module, and an electrocardiographic (ECG) module. In one embodiment, the processor calculates additional vital signs in response to signals from the plurality of vital signs sensing modules.

A surface inspection system and method is provided which detects defects such as particles or pits on the surface of a workpiece, such as a silicon wafer, and also distinguishes between pit defects and particle defects. The surface inspection system comprises an inspection station for receiving a workpiece and a scanner positioned and arranged to scan a surface of the workpiece at the inspection station. The scanner includes a light source arranged to project a beam of P-polarized light and a scanner positioned to scan the P-polarized light beam across the surface of the workpiece. The system further provides for detecting differences in the angular distribution of the light scattered from the workpiece and for distinguishing particle defects from pit defects based upon these differences.

A base station communicates with mobile terminals existing within a subordinate cell, and in addition executes control to reduce interference from mobile terminals existing within adjacent cells. The base station measures the total interference power received from mobile terminals in all adjacent cells, and if the total interference power is greater than a preset value, issues a request to the base stations of all adjacent cells to reduce interference. The base station which has received the interference reduction request discriminates mobile terminals which impart interference to the base station which is the source of the interference reduction request, and reduces interference by either temporarily lowering the uplink data transmission rate or temporarily halting uplink data transmission for such mobile terminals.

A system and method for using magnetic resonance to track a medical device which attenuates interfering MR signals. The system comprises an MR tracking device comprising one or more radiofrequency (RF) tracking coils adapted to receive a magnetic resonance MR response signal from nuclei excited by an RF pulse. Ideally, the RF tracking coil only receives an MR response signal from nuclei in matter in the close vicinity of the tracking device. The tracking device is attached to medical device. The interfering signal tends to emanate from large objects or large volumes that are outside the close vicinity of the tracking device but which are still weakly coupled to the tracking device. A dephasing gradient is applied perpendicular to the readout gradient before the RF response signal is received thereby dephasing the interfering signal emanating from remote nuclei, which strongly attenuates the interfering signal while the MR response signal is substantially unaffected. The system can also detect errors in tracking location by checking the amplitude of the signal from each coil and the detected distance between each coil, and correcting for such errors by ignoring data from coils having low amplitude or location deviating from known location relative to the other coils.

The invention provides a linear voltage stabilizing circuit with low voltage difference. The linear voltage stabilizing circuit with the low voltage difference is provided with high power supply rejection ratio and comprises an error amplifier, a buffer circuit, a P-channel metal oxide semiconductor (PMOS) regulating transistor, a compensation circuit, a voltage division feedback circuit and an output circuit. The error amplifier is a novel error amplifier. Ratio of width to length ratio of a fifth PMOS tube and a sixth PMOS tube, ratio of width to length ratio of a seventh PMOS tube and an eighth PMOS tube and ratio of width to length ratio of a ninth N-channel metal oxide semiconductor (NMOS) tube and a tenth NMOS tube are all 1: K, and K is an integer greater than 1. The ratio of width to length ratio of the metal oxide semiconductor (MOS) tubes is changed, resistance of an output node of the error amplifier to a power supply is reduced, power interference enters from a current mirror low resistance point is amplified through current amplification technology, and power supply high frequency small signal interference in output signals of the error amplifier cannot be attenuated excessively. Therefore, the linear voltage stabilizing circuit with the low voltage difference enables power supply interference signals arriving at a PMOS regulating transistor grid to be varied according to variation of power supply voltage well, and improves the power supply rejection ratio of circuits.

An electronic wireless tire pressure monitoring apparatus is provided to install on an inflation valve on a tire for a direct signal transmission and a reliable detection. A pressure sensor is configured as a chip type semiconductor sensor and directly wire-bonded to a circuit board. Meanwhile, the pressure sensor is fixed by the pinch pin and the pinch pin holder in place, thereby defining an airtight chamber to allow for an accurate detection of the tire pressure with the pressure sensor. Moreover, the pinch pin and the pinch pin holder are used as electrically conducting means for power supply when the tire pressure detector is screwed on the tire valve. A disconnection is easily achieved when unscrewed. Therefore, the power-saving effect is achieved and no signals are falsely transmitted.

An interference cancellation device comprises an input for a disturbed signal, a first frequency shifter, a bandpass filter, and a signal combiner. The first frequency shifter shifts the disturbed signal from an original frequency range to a filtering frequency range. The frequency-shifted signal is filtered by the bandpass filter. The filtered signal is supplied to the signal combiner which combines the filtered signal with the disturbed signal to substantially reduce the interference signal that is present in the disturbed signal. A method for interference signal cancellation is also proposed. Furthermore, a computer program product with instructions for the manufacture and a computer program product enabling a processor to carry out the method for interference signal cancellation are also proposed.

A method to be performed by a network system is proposed, for P2P communication to cancel interference, comprising steps of: determining the redundant code group information, according to the code group usage information of the cell in which two UEs to establish P2P connection camp and its adjacent cells; detecting the relative position between said two UEs and each of other active UEs in communication state in the cell where said two UEs are camping and its adjacent cells; if at least one UE of said two UEs causes radio interference to at least one of said active UEs according to the relative position, further determining whether said UE and said active UE are assigned in the same time slot; selecting a scrambling code from the redundant code group information and assigning it to said two UEs if said UE and said active are assigned in the same time slot, so that said two UEs can perform scrambling operation by using said scrambling code on P2P signals transferred between said two UEs.

A method of receiving a signal of a relay station in a wireless communication system is provided. The method includes: receiving backhaul resource allocation information from a base station; and receiving backhaul downlink data from the base station by using a radio resource indicated by the backhaul resource allocation information, wherein the radio resource includes a plurality of symbols in a time domain, and the plurality of symbols have boundaries which are shifted based on symbols included in a frequency band allocated to a macro user equipment, and wherein the radio resource includes a plurality of subcarriers in a frequency domain, and at least one subcarrier adjacent to the frequency band allocated to the macro user equipment among the plurality of subcarriers is set to a guard subcarrier in which the base station transmits no signal.

The invention discloses a UHF (Ultra High Frequency) broadband current sensor based on a Rogowski coil principle and a joint monitoring system, and belongs to the technical field of local discharge monitoring of cables. The magnetic core of the UHF broadband current sensor is partitioned into two half rings, and is made of an iron-based nanocrystalline alloy material; a winding is a copper lead which is 0.8 millimeter in diameter; a coil is of 15 turns. The joint monitoring system consists of the UHF broadband current sensor and a VHF (Very High Frequency) sensor, wherein the VHF sensor and the UHF broadband current sensor are used together for monitoring a running cable in real time; data are transmitted to an oscilloscope; the oscilloscope is connected with an industrial control computer. According to the UHF broadband current sensor, a local discharge signal can be calibrated, so that background noise interference can be eliminated effectively, and a local discharge waveform is extracted accurately. A detection test is performed on a middle joint of a real cable with local discharge in an experiment and on field, and a test result indicates that the sensitivity is below 10pV; interference signals can be reduced effectively; a basis is provided for the judgment of field personnel.

The invention provides a multi-target tracking method and system fusing geographic space information, and the method comprises the following steps: obtaining an internal parameter matrix and an external parameter matrix of a camera which shoots monitoring video data, and building a mapping model of an image space and a geographic space according to the internal parameter matrix and the external parameter matrix of the camera; Obtaining monitoring video data of a camera, performing target detection on the monitoring video data to obtain a foreground target, and tracking the foreground target toobtain a tracking track of the foreground target; And converting the obtained foreground target and the foreground target tracking trajectory into a geographic space by using the mapping model, and fusing the converted foreground target and foreground target tracking trajectory with a real map to realize visual expression of foreground target tracking in the real map. According to the technical scheme provided by the invention, the visual expression of the foreground target tracking in the real map can be obtained, and the problem that the visual effect of the tracking result is poor due to the fact that the foreground target tracking is not combined with the actual geographic space during multi-target tracking is solved.

An antijam filter and method for filtering interference signals from signals received from the desired user in spatially multiplexed wireless communication systems. The antijam filter estimates the interference from known and unknown sources, and uses that estimate to filter the interference from the received signals. The filtered desired user signals are rendered for further signal processing using existing methods. The antijam filter and method are modular, with applicability to a wide range of wireless communication systems employing multiple antennas at the receiver.

An image building module includes an image builder, a signal-shielding flexible film, and a signal shielding cover. The image builder includes a first image capturing element and a processing chip. The first image capturing element is used for capturing a first image. The processing chip is used for processing the first image. The signal-shielding flexible film covers the processing chip. The signal shielding cover covers the image builder and the signal-shielding flexible film. The signal shielding cover has a first through hole exposing the first image capturing element.

Receiver systems and methods are provided for processing transmit signals S_tr that are received over a receive channel C_rcv which is formed by a plurality of receive paths. Method embodiments comprise the steps of a) receiving the transmit signals S_tr with a plurality of spatially separated antennas to form respective receive signals S_rcv, and b) spatially and temporally processing the receive signals S_rcv to form a combined corrected signal S_{crct<sub2>cmb </sub2>}that reduces errors in at least one signal parameter. Exemplary signal parameters include signal preambles, codes, spreading codes and modulations.

There is provided systems and methods for mitigating foreign interference by complementing a receiver of a wireless network, comprising: using antennas for reception of desired signals and interference signals; determining the presence of an interference signal originating from at least one foreign transmitting source in the received signals, and for determining a termination of the interference signal; determining the presence of a desired signal originating from the wireless communication network in the received signals; calculating a suitable combination of the received signals, wherein the effect induced by the interference signal is reduced and the impact of an interference cancellation on the desired signals is reduced; and providing the suitable combination to a receiver of a wireless communication network; wherein the method is performed complementary to the receiver of the wireless network and the antennas.

A complex orthogonal code in the present invention is one in which each row of a square matrix of N rows and N columns in which an element of an mth row and nth column is exp[2πj(m−1)(n−1)/N] (where j is an imaginary unit) is adopted as a code word. An optical orthogonal code for Optical Code Division Multiplexing/Optical Code Division Multiple Access (OCDM/OCDMA) is realized by a train of N-number of optical pulses corresponding to the argument (phase) of the code elements. An optical transmitter or optical receiver includes an optical correlator provided with a sampled Bragg grating having a plurality of Bragg gratings disposed serially at regular intervals inside an optical waveguide. The optical correlator is allocated any one of the code words. In the optical transmitter, an optical signal to be transmitted is encoded by the optical correlator. In the receiver, a received optical signal is decoded by the optical correlator. A high autocorrelation output is obtained only in a case where the code word used to encode the received optical signal and the code word allocated to the optical receiver match.

Where the additional data throughput is added using an amplitude offset or a combination of phase and amplitude offset, the legacy differential demodulator does not recover the amplitude information. The present invention provides a method for demodulating amplitude offsets in a differential modulation system in order to recover the amplitude information. The demodulated amplitude information may be used to recover the additional Level 2 data transmitted as an amplitude offset or combination phase and amplitude offset in a differential multiple phase shift keying (D-MPSK) transmission, such as across adjacent OFDM symbols and/or adjacent frequency subcarriers.

Disclosed are an interference signal processing method and device. In the method, a serving cell of an edge user measures information about an interference cell, and sends the information to the interference cell, so that the interference cell coordinates a pilot configuration parameter according to the information, thereby reducing interference signals generated by the interference cell for the edge user.

Resources available for large power base stations are controlled in a radio communication system in which mobile terminals with and without interference suppression capability are used together and in which a large power base station and small power base stations coordinate inter-cell interference control. A radio base station coordinates inter-cell interference control with at least one second radio base station forming a second cell within a first cell of the radio base station, the second cell having a smaller area than the first cell. The radio base station has a resource setter for setting a ratio of a first resource in which the radio base station is to execute radio communication and a second resource in which the radio base station is to stop radio communication according to the ratio of the number of mobile terminals capable of executing interference rejection combining to the total number of mobile terminals connecting to the radio base station or to at least one second radio base station.

The invention relates to a transport roller (19) of tobacco processing industry, comprising a containing hopper (66) for containing rod-shaped objects (52, 54) of the tobacco processing industry, wherein the rod-shaped objects (52, 54) can be orderly, transversely and axially arranged into at least one row. The transport roller (19) is characterized in that the transport roller (19) at least partially comprises a sucking device (80) on the circumference thereof; furthermore, the invention also relates to a machine of the tobacco processing industry, in particular to a filter tip connecting and assembling machine.

The invention relates to a method for detecting four tobacco-specific nitrosamines (TSNAs) in lateral exhaust gas of cigarettes by virtue of gas chromatography-tandem mass spectrometry. The method is characterized by comprising the steps of capturing the lateral exhaust gas of the cigarettes by virtue of a lateral fishtail cover preprocessed by an ascorbic acid solution and a Cambridge filter preprocessed by an ascorbic acid saturated methanol solution, washing the lateral fishtail cover with a hydrochloric acid solution, adding the washed hydrochloric acid solution and an TSNAs internal standard solution into a container in which the Cambridge filter is collected, extracting the Cambridge filter, processing extraction solution by virtue of a solid phase extraction column to obtain an eluate, drying the eluate with nitrogen, redissolving by virtue of dichloromethane to obtain a sample, and analyzing the sample by virtue of the gas chromatography-tandem mass spectrometry (GC-MS/MS). According to the method, the disadvantages of tedious preprocessing process, low detection sensitivity and strong matrix effect in an existing method are overcome, the preprocessing step of the sample is simplified, and the consumption of organic solvents is reduced; the method has the advantages that the detection is accurate, the sensitivity is high, and the repeatability is good.