67results about How to "Simple correction" patented technology

Apparatus for monitoring a plurality of tissue viability parameters of a tissue layer element, in which two different illumination sources are used via a common illumination element in contact with the tissue. One illumination source is used for monitoring blood flow rate and optionally flavoprotein concentration, and collection fibers are provided to receive the appropriate radiation from the tissue. The other illuminating radiation is used for monitoring any one of and preferably all of NADH, blood volume and blood oxygenation state of the tissue element, and collection fibers are provided to receive the appropriate radiation from the tissue. In one embodiment, the wavelengths of the two illumination sources are similar, and common collection fibers for the two illuminating radiations are used. In another embodiment, the respective collection fibers are distanced from the illumination point at different distances correlated to the ratio of the first and second illuminating wavelengths.

A magnetic direction sensor can detect at higher precision the magnitude and direction of a detected magnetic field. The magnetic direction sensor has a measuring section, a storage section and an operating section. The measuring section has first and second MR elements, and detects resistance values of these elements in accordance with an attitude change of the sensor and the presence or absence of a bias magnetic field to be applied through a coil in a direction orthogonal to a magnetization direction of each pinned layer in the first and second MR elements. The storage section stores fixed data invariable in response to a detected magnetic field direction, in resistance values of these elements measured by the measuring section. The operating section calculates a detected magnetic field vector from variable data of resistance values of these elements measured by the measuring section, and fixed data stored in the storage section.

An apparatus for the production of pocketed coil springs is disclosed. The apparatus includes a coiling section in which a coil is formed from wire fed to the coiling section, the coiling section including coiling elements, whose position and/or orientation determines the form of the coil, and an encapsulation section in which the coil is inserted between juxtaposed sheets of material and in which the sheets of material are joined together to form a pocket enclosing the coil. The apparatus further includes programmable control means operably linked to the coiling elements in such a way as to control the position and/or orientation of the coiling elements.

The invention relates to a method of eliminating deformation of a wax mould for an ultrathin elongated working blade of a turbine, and belongs to the technical field of manufacturing of blades of aviation engines. The method overcomes disadvantages in the prior art, provides a scheme of carrying and installing the blade wax mould by utilizing a wax mould clamping fixture, and discloses a design scheme of the wax mould clamping fixture. In an actual development and production process of a turbine working blade, because the wax mould clamping fixture is utilized to carry and install the blade wax mould, deformation of the blade wax mould is effectively controlled, and the deformation amount of the turbine working blade manufactured by utilization of the blade wax mould is reduced from original about 1 mm to now about 0.3 mm. Because the deformation amount is reduced, blade correction becomes relatively easy, thus avoiding generation of correction cracks, increasing the yield of precision casting of the turbine working blade by about 20%, largely reducing the rejection rate of the blade and largely saving the production cost.

A circuit arrangement for determining a frequency drift in a phase locked loop includes a type I phase locked loop having a phase comparator, a charge pump, a loop filter, an oscillator and also a frequency divider in a feedback path of the control loop. A device is coupled to the phase locked loop for the purpose of determining a pulse length of the actuating voltage signal at at least two different times during an operation of the control loop. Furthermore, a computing unit is connected to an output of the device. It is designed for forming a difference between the pulse lengths at the at least two different times, as a result of which a phase and frequency drift of an output signal of the control loop can be determined.

The present invention discloses a lens distortion correcting method and system used for automatic optical detection. The method comprises the processes of selecting an uneven checkerboard as a calibration board, and obtaining a distorted figure; carrying out the angular point rough extraction on the distorted figure; carrying out the accurate angular point extraction on the roughly extracted dense angular points via the erosion and dilation and the blob analysis to obtain the real angular points; calculating a distortion model parameter between the coordinates of the real angular points and the ideal diagram angular point coordinates; according to the distortion model parameter and the coordinate of each pixel point in an ideal diagram, calculating the coordinate of each pixel point in the distorted figure; obtaining a pixel value corresponding to the coordinate of each pixel point in the distorted figure according to the coordinate of each pixel point in the distorted figure. According to the present invention, with the usage of the uneven checkerboard, the edge feature points are more and denser, so that the actual situation is approached better, and the calculated distortion model parameter is more reasonable. By the erosion and dilation and the blob analysis, the real angular points are extracted, the angular point extraction precision is high, and a distortion correction effect is good.

The present invention provides a method and system by which a service provider is able to verify the benefit eligibility of a patient. Methods and systems of the claimed invention are used to create one or more queries to verify a patient's insurance benefits in a database to determine the eligibility of the claim. Embodiments of the invention are also used to verify a patient's claims history.

The invention relates to a fisheye image correction method and device. The fisheye image correction method comprises the steps of acquiring an optical imaging center of an initial fisheye image to becorrected, and converting image coordinates of the initial fisheye image into image physical coordinates; performing correction on the initial fisheye image according to a preset mapping relation to obtain a longitudinal repair image of the initial fisheye image; performing a primary rotation operation on the longitudinal repair image to obtain a rotated image, wherein the rotating angle of the primary rotation operation is odd times of 90 degrees; performing correction of the rotated image according to the mapping relation to obtain a preliminary repair image of the initial fisheye image; andperforming a secondary rotation operation on the preliminary repair image to obtain a target corrected image of the initial fisheye image, wherein the secondary rotation operation and the primary rotation operation are identical in angle and opposite in direction. According to the invention, the reading and writing efficiency of a memory in the image correcting process is improved, and the correcting process is simple and flexible.

Absorption spectrometer and method for measuring the concentration of a gaseous component of interest in a measurement gas, wherein to compensate influence of changes in an optical path length in the absorption spectrometer on a measured result, light from the laser is modulated with at least one pilot frequency in the MHz range, the measurement signal is analyzed in a phase-sensitive manner for the pilot frequency, phase information obtained during this analysis is compared with phase information obtained during calibration of the absorption spectrometer, where the measured result is corrected as a function of the difference between the two items of phase information. Alternatively, light from the laser is modulated with two pilot frequencies, where signal components contained in the measurement signal with the pilot frequencies are detected in a phase-sensitive manner and the difference between the phase information of the two signal components obtained in this operation is analyzed.

Method for analyzing a sample including a species to be characterized and a reference species, includes:

• • acquiring one or more complex free induction decay (FID) signal(s) (S(t)),
  • obtaining a FID spectrum S(ω) by applying a Fourier transform to the signal S(t), with the FID spectrum obtained including two portions, each extending from the resonance frequency of the reference species (F_0ref) and respectively on either side of F_0Ref, with the frequency of the species to be characterized located on a portion of the spectrum;
  • modeling the signal of the reference species from the real and complex parts of the at least one complex FID signal;
  • obtaining a spectrum Sref(ω) of the reference species including the reference species only,
  • obtaining a modified FID {tilde over (S)}(ω) spectrum;
  • applying a reverse Fourier transform to {tilde over (S)}(ω) to obtain a modified signal {tilde over (s)}(t);
    • calculating the module of the {tilde over (s)}(t) modified FID signal.

A method for operating an internal combustion engine is provided in which fuel is withdrawn from a high-pressure accumulator and injected into a combustion chamber of at least one cylinder of the internal combustion engine, the method including the steps of detecting under conditions of angular synchronism a pressure of the fuel in the high-pressure accumulator during a first injection into the at least one cylinder and during a later, second injection into the at least one cylinder; ascertaining a gradient of the detected pressure; ascertaining a frequency-transformed spectrum of the detected pressure and a frequency-transformed spectrum of the ascertained gradient; correcting the frequency-transformed spectrum of the detected pressure by the frequency-transformed spectrum of the ascertained gradient; and ascertaining a cylinder-individual injection quantity of fuel, which was injected into the at least one cylinder, from the corrected frequency-transformed spectrum of the detected pressure.

A thermal material-processing method wherein between the working spot of an electron beam and a workpiece a relative motion is brought about. Prior to the actual thermal treatment an effective processing contour is ascertained, in that the working spot of the electron beam executes, in accordance with the stored data of an ideal processing contour, a relative motion in relation to the workpiece, and on this relative motion a scan motion is superimposed which is directed transversely to the ideal processing contour. In this manner, both geometrical and magnetically conditioned deviations of the points of incidence of the electron beam on the workpiece can be compensated.

An algorithm for a non-redundant multi-error correcting binary differential demodulator simplifies error detection and reduces memory requirements in circuits embodying the same. The demodulator includes a differential detectors (DD) module, an error signal generator (ESG) module, and an error detection-and-correction (EDAC) module. The DD module receives modulated binary input at each of (k+1) differential detectors, each producing (k+1) outputs. The ESG module combines the (k+1)² output signals with k corrected feedback signals to derive syndromes orthogonal to an erroneous bit to be corrected and generates 2k error signals from the syndromes. The EDAC module generates a correction factor from the 2k error signals and combines the factor with the output of the first order detector delayed by k bits to correct an erroneous bit. The k corrected feedback signals may be derived by successively delaying the corrected erroneous bit. Simplified higher order demodulators may be constructed using a nested hierarchy of lower order demodulators based on the algorithm.

A method for determining the frequency of current ripples contained in the armature current signal of a commutated direct current (DC) motor includes determining frequency spectral results of the current signal and of a motor electric operating parameter. The frequency spectral results are subtracted from one another to determine the frequency spectral result of the current ripples contained in the current signal. The current ripple frequency is determined from the frequency spectral result of the current ripples contained in the current signal. The operating parameter may be the armature voltage signal, or the armature current signal at a different motor operating state than the motor operating state of the current signal used in the step of determining the current signal frequency spectral result. The rotational speed of a motor shaft is determined based on the current ripple frequency. The shaft rotational position is determined based on the rotational shaft speed.