68results about How to "Better signal to noise ratio" patented technology

A combined information display and information input device comprising a matrix of independently addressable light emitting devices and a plurality of light sensing devices, the light emitting devices comprising organic light emitting diodes comprising organic light emitting material positioned between a low work function electrode and a high work function electrode characterized in that the light sensing devices comprise organic photovoltaic devices comprising at least an organic electron donor and at least an organic electron acceptor positioned between a high work function electrode and a low work function electrode. The combined information display and information input device has application as a touch screen, for example for a mobile communication device.

The invention concerns a position sensor, designed in particular for detecting a steering column torsion, consisting of a first magnetic structure including a plurality of magnets and a second magnetic structure including two ferromagnetic rings (6, 7) having a plurality of teeth (11, 12) and defining an air gap wherein is placed at least a magneto-sensitive element (15), the two magnetic structures being respectively integral with two parts in relative rotation. The invention is characterised in that the two ferromagnetic rings (6, 7) are nested and have each a substantially tubular part forming axially oriented teeth (11, 123) connected by a flux-closing zone (13, 14), the detecting air gap being delimited by said flux-closing zones.

A system for determining a distance to an object including a solid-state light source for projecting a pattern of discrete spots of laser light towards the object in a sequence of pulses; a detector having a plurality of picture elements, for detecting light representing the pattern of discrete spots as reflected by the object in synchronization with the pulses; and a processor to calculate the distance to the object as a function of exposure values generated by the picture elements. The picture elements are configured to generate exposure values by accumulating, for each pulse of the sequence, a first amount of electrical charge representative of a first amount of light reflected by the object during a first time window and a second electrical charge representative of a second amount of light reflected by the object during a second time window, the second time window occurring after the first time window.

Methods of selecting spectral elements and system components for a multivariate optical analysis system include providing spectral calibration data for a sample of interest; identifying a plurality of combinations of system components; modeling performance of a pilot system with one of the combinations of system components; determining optimal characteristics of the pilot system; and selecting optimal system components from among the combinations of system components.

An overhead microphone assembly using multiple unidirectional microphone elements. The microphone assembly is installed overhead, generally above all the desired sound sources and below the undesired sound sources. The signals from these multiple microphone elements are fed into a microphone steering processor which can mix and gate the signals to ensure the best signal/noise ratio. The steering processor may also track the sound source dynamically when such tracking (source locating) is desired. The resulting audio signal from the steering processor may be further processed, such as echo canceling, noise reduction and automatic gain control.

Multiple RFID integrated circuit microradio chips are located at the feed point of an RFID tag antenna for greater reliability, elimination of testing and to take advantage of coherent microradio operation for increased gain and power, better signal-to-noise ratios, improved range and low bit error rates.

Assay devices comprising substrates functionalized to comprise probe species on multiple separate regions are provided. Ten thousand to a hundred thousand separate regions can be provided in a substrate of one square centimeter. The separate regions can comprise separate probe species, or in another embodiment, multiple different probe species can be present on each single functionalized region. The probe species are selected to be specific for binding to target species of interest in a sample. Methods and systems for making these devices are also provided. The devices are useful, for example for assaying molecules in a human sample that are reactive to a large number of different allergens placed on the substrate.

A system and a method for automatic restoration of isotropic degradations of a digital image, based on receiving a blurred image by an image capture assembly, automatically finding proper step edge, calculating the PSF from the step edge, and restoring the blurred image by means of a processor, and with the option to display the resorted image by means of an output assembly.

A method for obtaining an increased update rate in an indoor acoustic positioning system (300) for determining the position of one or more identification tags (100), comprising transmitting from an identification tag (100) an acoustic spread spectrum sequence that is unique to the identification tag (100), receiving the spread spectrum sequence in a detector unit (200) and recording the arrival time of the spectrum sequence, and comparing the spectrum sequence with stored values of the spectrum sequences used by all the identification tags (100) in the positioning system (300). A system (300) for obtaining an increased update fate in indoor acoustic positioning comprises at least one identification tag (100) that transmits a spread spectrum sequence, at least one detector unit (200) that detects and records the spread spectrum sequence and its arrival time, a network (215) that connects several detector units (200) together by signals, and at least one central unit (310) for collecting and interpreting processed data from the detector units (200) via the network (215), and processing means in the central unit(s) (310) for determining the position of a specific identification tag (100).

A method for estimating the distance (d) of a receiver (102) from a radio transmitter (101) includes the steps of: receiving (602) radio signals (103, 701) irradiated by the transmitter (101), which include components from which at least three tones (1,2,3,4) are extracted, each having a different frequency; measuring (606) a first phase difference (Δφ₂₁) between first two tones (1, 2) of the at least three tones, whose frequencies (f₁, f₂) have a first spacing, and measuring a second phase difference (Δφ₄₃) between second two tones (3, 4) of the at least three tones, whose frequencies (f₃, f₄) have a second spacing, wherein one of the first spacing or second spacing is greater than the other; estimating (607, 611, 613) the distance (d) on the basis of the first phase difference (Δφ₂₁) and the second phase difference (Δφ₄₃).

A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include controlling the engine in response to detecting opening of an exhaust valve after deactivation based measured or inferred exhaust pressure changes after deactivation. In one embodiment, controlling the engine includes reactivating one or more deactivated cylinders/valves, inhibiting subsequent deactivation, and/or storing a diagnostic code in a computer readable storage medium in response to detecting valve opening after deactivation.

When an addition/averaging process is done for pixels in the same color in a unit pixel block in a stage reading pixel information to a horizontal signal line, the addition/averaging process is also done for a noise component added in a signal process from the pixels to the horizontal signal line. Thus, a problem arises in the signal-to-noise ratio. Each of signal processing circuits of a column signal processing circuit part is provided with reverse amplifiers which output signals of pixels transmitted by a vertical signal line at a low impedance, and with feedback capacitances which are adjustably connected in parallel to these reverse amplifiers, the signal processing circuit being disposed at every column. These feedback capacitances are used to do row wise and column wise pixel addition for the pixels in the same color in the unit pixel block to take out pixel signals for a single pixel in simulation.

A method for diagnosing certain types of cancers provides a nanoparticle agent to be uptaken by cancer cells for diagnosis and treatment of certain cancers. A compound containing nanoparticles is directed toward a tumor site, and then a predetermined time period passes to allow the nanoparticles to be uptaken by the cancer cells. Imaging is then performed on the nanoparticles by an appropriate imaging device to determine the concentration of nanoparticles uptaken by the cancer cells. Finally, image data provided by the imaging device is analyzed to determine the concentration of nanoparticles and thereby determine whether a tumor is present. The nanoparticle agent can further be employed as a treatment of certain cancers. After the uptake of nanoparticles into the cells, a predetermined field applied to the nanoparticles for a sufficient period of time activates the magnetic cores of the nanoparticles to include hyperthermia-mediated destruction of the cancer cells.

A sensor includes a resonant transducer, the resonant transducer being configured to determine the composition of an emulsion. The composition of the emulsion is determined by measuring the complex impedance spectrum values of the mixture of the emulsion and applying multivariate data analysis to the values.

The invention proposes a method for imaging at least one microscopic property of a sample and an apparatus with which the proposed method can be carried out. In the method, at least one coherent illumination light with at least one illumination wavelength is produced by means of at least one light source. The illumination light is imaged onto at least one region on or within the sampled. Detection light emitted by the sample is split at least partially into incoherent detection light and into coherent detection light by means of at least on physically separating beam splitter. The coherent detection light is at least partially separated from the coherent illumination light by at least one beam-splitter element. The coherent detection light is detected. The proposed method can be used in particular for investigating the sample by means of coherent anti-Stokes-Raman scattering.

A communication and speech enhancement system featuring a first transducer designed to be temporarily affixed to a human such as a hospital patient to convert the audible vibrations of human speech into an electrical signal. The transducer provides this electrical signal to one or more electronic modules which modify and enhance the signal. The enhanced signal may then be amplified and converted back into audible sound by means of a second transducer. A user of the system controls the electronic modules through a user interface. In an embodiment, one or both of the user interface and second transducer feature smooth surfaces amenable to cleaning sterilizing with liquid agents.

An imaging device for imaging an anaesthetized animal such as a rodent (rats or mice or other animals), with the device having a split array coil capable of providing at least two channels for use in a restraining assembly with animal bed for magnetic resonance imaging (MRI) the animal in real-time in a non-destructive manner.

In a hearing aid the transmission and amplification of a useful signal is to be improved, especially in difficult environments, i.e. those susceptible to interference signals. To this end it is proposed that signals be transmitted between a first hearing aid worn by a first hearing aid wearer and a second hearing aid worn by a second hearing aid wearer. In this case the transmitted signals can consist of control parameters, sound field characteristic values or an audio signal. Further it is possible for the signal transmission between the first hearing aid and the second hearing aid to be under-taken via at least one further hearing aid which is worn by at least one further hearing aid wearer. The third hearing aid fulfills the function of a relay station in this case. Through the invention a signal with improved signal-to-noise ratio can be fed directly to the hearing of a hearing aid wearer or the signal processing of a hearing aid can be better adapted to the relevant environmental situation.

In a method and magnetic resonance imaging apparatus wherein magnetic resonance signals are simultaneously received from an examination subject by multiple reception coils, a single, uninterrupted pulse sequence is executed which includes reference scans of the subject with a first sequence kernel that is optimized for coil sensitivity calibration, immediately followed by a series of accelerated image scans with a second sequence kernel, different from the first sequence kernel, that is optimized for imaging. Coil sensitivity maps for the respective coils are calculated from the data acquired in the reference scans, and an image of the subject is reconstructed by operating on the image data with a parallel reconstruction algorithm employing the calculated coil sensitivity maps.

A method for inspecting a part is provided. The method includes applying a number of multifrequency excitation signals to a probe to generate a number of multifrequency response signals for the part being inspected. The method further includes performing a multifrequency phase analysis on the multifrequency response signals to inspect a subsurface of the part. An inspection system is provided and includes an eddy current (EC) probe configured to induce eddy currents in a part. The system further includes an eddy current instrument coupled to the EC probe and configured to apply multifrequency excitation signals to the EC probe to generate multifrequency response signals. The system further includes a processor configured to analyze the multifrequency response signals from the EC instrument by performing a multifrequency phase analysis, to inspect a subsurface of the part.

In a method to generate magnetic resonance (MR) images of an examination subject, MR signals are detected simultaneously with multiple coils, each coil having its own coil characteristic. In the detection of the MR signals, raw data space is incompletely filled with MR signals; with raw data space being undersampled in a central raw data region with a coherent acquisition pattern that is composed of a spatially repeating set of raw data points; and raw data space outside of the central raw data region is sampled with an incoherent acquisition pattern. The MR image is reconstructed from the detected MR signals, step-by-step in an iterative reconstruction procedure using a reconstruction matrix A, starting from an initial estimate; wherein the reconstruction matrix has continuing information about the coil characteristics with which the MR signals were detected.

The invention relates to a method for acquiring MR images (200-216) of an object, said object comprising at least first and second kinds of nuclei, the method comprising: acquiring (300; 304) first MR image data (200; 202; 204) of the object, wherein the first nuclei are excited, acquiring (302) second MR image data (206-216) of the object, wherein the second nuclei are excited, analyzing the first MR image data (200; 202; 204) determining motion parameters describing a motion of the object based on said analysis, motion correcting the first and/or second MR image data (206-216) using said motion parameters.

A method of interrogating an addressable array unit having a transparent substrate with a back surface, and an array with a plurality of different chemical features on a front surface. The method may include illuminating the features while the array is dry, with an interrogating light which is directed through the substrate from the back surface and onto the chemical features on the front surface. The light emitted from respective features in response to the interrogating light may be detected, which detected light has passed from the front surface, through the substrate and out the back surface. In one arrangement the light is emitted from locations of the features which are spaced from the front surface a distance of less than one-eighth of the wavelength of the illuminating light in a gas or a vacuum which is in contact with the dry array. Other methods and a package containing an addressable array are also provided.

Exemplary practice of the present invention provides an air vehicle and at least one interferometric double-path fiber optic sensor connected with the air vehicle. Each fiber optic sensor includes a pair of optical fibers, viz., an optical sensing fiber and an optical reference fiber, in a parallel and propinquus relationship. The paired optical fibers of each fiber optic sensor are attached to the air vehicle either (i) circumferentially around the fuselage or (ii) lengthwise along the fuselage or (iii) span-wise along the wings and across the fuselage, and are configured whereby the sensing fiber is exposed to the atmosphere and the reference fiber is not. Each fiber optic sensor senses atmospheric infrasound but does not sense atmospheric wind noise, which is negated by incoherency associated with design lengthiness of the optical fiber pair. Noise and strain due to temperature, vibration, and propulsion are neutralized via interferometric common mode rejection.

A system and method for frequency conversion in a frequency-conversion receiver is disclosed. The frequency-conversion receiver receives input RF signals carrying multiple channels. The frequency-conversion receiver converts the input RF signals to a wide IF band. The IF band is further processed by dividing the IF band into one or more frequency segments or by selecting a wideband frequency segment from the IF band. The wideband frequency segment or the one or more frequency segments are further down-converted, filtered and amplified to provide desired output IF signals, based on the number of channels required in the output IF signals.

Inspection of partially drilled microvias by fluorescence based optical imaging techniques, selective coaxial illumination and multivariable off-axis illumination and the use of comparative image analysis and the transformation of back reflected radiation by means of an integrated fluorescing plate mounted to the surface of a CCD or EMCCD array.