32results about How to "Accuracy of estimation" patented technology

An inspection method includes an array process of forming a TFT array on a substrate to fabricate an active matrix panel, an inspection process of carrying out a performance test on the fabricated active matrix panel, and a cell process of mounting an OLED on the active matrix panel after the inspection process. In the inspection process, variation in parasitic capacitance through a pixel electrode is measured when driving TFTs constituting the active matrix fabricated in the array process are turned on and when the driving TFTs are turned off, and open / short defects in the driving TFTs are thereby inspected.

An adaptive antenna radio communication device comprises a divided band direction estimating unit (4) for estimating the direction by calculating the cross correlations between a pilot signal and sub-carrier signals of the respective divided bands received by an array antenna (1) and calculating a spatial profile from correlation matrices determined by combining the correlation values between antenna elements of the different sub-carriers according to the output of the cross correlation calculation; a divided band array weight creating unit (5) for creating a weight of a receive array having a directional beam in the direction of estimation for each divided band; and a sub-carrier directivity creating unit (6) for creating a directivity by multiplication-combining the created receive array weight with the corresponding sub-carrier signal.

An ultrasound imaging apparatus and method comprises a transducer array, a positioning device for the array, a reflector, a multiplexer, a transmitter / receiver, an image reconstruction and signal processing apparatus, and a monitor. The transducer array and the reflector are located on two sides of an object which are opposite to each other. Every channel of the transducer array can independently transmit and receive signal, and the reflector is used to reflect the transmitted signal from any channel. Thus, the system can collect the echoes from the reflector for all transmit / receive combinations, and then extract from the echoes the time-of-flight data and the attenuation data necessary for estimating the sound velocities and the attenuation coefficients, respectively. When estimating the sound velocities and the attenuation coefficients of different tissues in an object, the B-mode image is applied to provide the segmentation information of the object in order to improve the estimation accuracy. The invention can be used to obtain the ultrasound B-mode image, the sound velocities, and the attenuation coefficients of an object, and can be extended to obtaining other parameters, such as elastic modulus, with a single apparatus.

A stopping position control apparatus of an internal combustion engine includes an engine friction model for calculating the friction around a crankshaft, which calculates friction in the internal combustion engine, and a transmission friction model for calculating the friction around the crankshaft, which calculates friction in a transmission. When a clutch arranged between the internal combustion engine and the transmission is engaged, a crankshaft stopping position is calculated based on the friction calculated by both the engine friction model and the transmission friction model.

A method and apparatus for extracting an envelope curve of a spectrogram, for use in measurement of blood flow velocity by using spectral Doppler techniques, the method comprising steps of: processing RF ultrasound echo signals to obtain Doppler signals; performing spectral analysis on the Doppler signals, to obtain a corresponding power spectrum P(f); estimating a forward maximum frequency fmax+ and a backward maximum frequency fmax− for the Doppler signals at a predetermined moment, according to the power spectrum P(f) of the Doppler signals at the predetermined moment; determining a noise frequency range according to the two maximum frequencies, so as to estimate an average noise power E; and correcting the forward maximum frequency and the backward maximum frequency by using the average noise power E. With the method of the invention, influence from the SNR and bandwidth on the envelope curve may be reduced, so as to be useful for accurate computation of blood flow parameters.

A fuel cell system according to the invention includes: a detecting unit (6, 12) that detects an operation parameter of the fuel cell; an internal resistance estimating unit (20) that sets the internal resistance of the fuel cell a basic internal resistance; a flow rate measuring unit (3) that measures the airflow rate; a pressure measuring unit (4) that measures the air pressure; a determining unit (20) that determines the IR-free output characteristic of the fuel cell; a setting unit (20) that sets the basic output characteristic of the fuel cell; an output current measuring unit (8) that measures the output current of the fuel cell; an output voltage measuring unit (9) that measures the output voltage of the fuel cell; and a calculating unit (20) that corrects the basic output characteristic using the output current and the output voltage.

An inspection method includes an array process of forming a TFT array on a substrate to fabricate an active matrix panel, an inspection process of carrying out a performance test on the fabricated active matrix panel, and a cell process of mounting an OLED on the active matrix panel after the inspection process. In the inspection process, variation in parasitic capacitance through a pixel electrode is measured when driving TFTs constituting the active matrix fabricated in the array process are turned on and when the driving TFTs are turned off, and open / short defects in the driving TFTs are thereby inspected.

The present invention relates to a method of simultaneously performing packet detection, symbol timing acquisition, and carrier frequency offset estimation in parallel using multiple correlation detection and a Bluetooth apparatus using the same, in which the Bluetooth apparatus receiving a frequency modulated signal includes a frequency demodulating unit converting the received signal into a similar amplitude modulated signal; and multiple correlation detectors generating multiple correlation indices from the converted signal, on a basis of an access address received from a link layer and a plurality of carrier frequency offset search windows. According to the present invention, since packet detection, symbol timing acquisition and carrier frequency offset estimation are simultaneously performed in parallel in the relatively long access address reception interval instead of the short preamble signal reception interval.

A solution for estimating frequency offset in a radio telecommunication system is provided. According to the solution, an estimate for frequency offset between a radio frequency carrier wave of a received signal and frequency of a local oscillator used for downconverting the received signal in a receiver is calculated by utilizing an approximation of Gauss-Hermite integration. Parameters of the receiver are adjusted according to the frequency offset estimate in order to retrieve information from the received signal.

Property value estimation employs a comparable sales technique that calculates a feature distance between a target property and corresponding comparable properties. Determining estimated values for properties includes performing a regression based upon property features for properties in a relatively large geographical area. A set of comparable properties from a section of the relatively large geographical area is identified, and a feature distance between each property from the set of comparable properties and a target property is calculated using information from the regression. The feature distance provides a quantified indication of the difference between each property from the set of comparable properties and the target property for the plurality of property features. An estimated value for the target property is then determined based upon a value of each of the comparable properties and adjustments based upon the calculated feature distances.

A disparity estimation device calculates, for each of first pixels of a first image and each of second pixels of a second image, a first census feature amount and a second census feature amount, calculates, for each of the first pixels, a first disparity value of the first pixel with integer accuracy, extracts, for each of the first pixels, reference pixels located in positions corresponding to the first disparity value and a near disparity value close to the first disparity value from the second pixels, calculates sub-pixel evaluation values based on the relationship between the pixel values of the first pixel and the neighboring pixel and the pixel values of each of the reference pixels and the neighboring pixel, and estimates a second disparity value of the first pixel with sub-pixel accuracy by equiangular fitting.

A trained neural network model is a neural network model which has been trained based on Nyquist plots of a plurality of modules of which full charge capacity is within a reference range. A processing system determines to which of a first group of modules of which full charge capacity is within the reference range and a second group of modules of which full charge capacity is out of the reference range a module belongs, based on discriminant analysis in which at least one feature value extracted from the Nyquist plot of the module is adopted as an explanatory variable. When the processing system determines that the module M belongs to the first group, the processing system estimates a full charge capacity of the module by using the trained neural network model.

A method of half-pixel interpolation and quarter-pixel interpolation are adapted for reducing the impact of aliasing within motion estimation. To estimate a motion vector with quarter-pixel accuracy more efficiently, the improved method is able to skip checking certain points using the uni-modal assumption. In an embodiment, a diamond based refinement is implemented. Within the diamond based refinement are half-pel refinement and quarter-pel refinements. Furthermore, within the half-pel refinement are methods for on-the-fly interpolation and pre-computed interpolation. Within quarter-pel refinement, the method depends on whether four neighbor half-pel points are checked or just one or two half-pel points. Moreover, within each of the different embodiments is the ability to focus on quality or speed wherein different methods are implemented to maximize the desired function. In another embodiment, a square based refinement is implemented.

A vehicle is equipped with an electric storage device, a drive motor, an auxiliary that can be driven by a regenerative electric power, and a control unit. The control unit performs a non-chargeable control for causing the auxiliary to consume the regenerative electric power when the electric storage device is in a non-chargeable state, and performs a specific maneuver control for causing the auxiliary to consume the regenerative electric power even when the electric storage device is in a chargeable state in the case where an operational maneuver for making a change to an operation mode in which a larger amount of the regenerative electric power is generated is performed with the regenerative electric power generated.

A global positioning system device and an ionosphere error estimation method thereof are provided. The global positioning system device is connected to a plurality of dual-band base stations, and receives a plurality of ionosphere pierce point coordinates and a plurality of ionosphere errors from the dual-band base stations. The global positioning system device calculates a user ionosphere error by an interpolation method based on the ionosphere pierce point coordinates and the ionosphere errors of the dual-band base stations and a user ionosphere pierce point coordinate of the global positioning system device.

An image capturing device and an image capturing method thereof are disclosed. The image capturing device includes an image capturing module and a processing module. The image capturing module captures a plurality of temporary images corresponding to a scene. The processing module sequentially analyzes the temporary images and generates a plurality of analysis results. The processing module dynamically adjusts the sampling time of the image capturing module capturing each temporary image according to the analysis results. Moreover, the processing module selects some of the plurality of temporary images according to the analysis results to integrate images. The image capturing module stops capturing the temporary images based upon a stop signal, and finally a storage image is generated.

A position estimation device includes: a selector configured to select N wireless terminals and reselect N wireless terminals from M wireless terminals; a distance calculator configured to calculate distances among wireless terminals in a group consisting of a parent wireless terminal and the N wireless terminals based on information on power of radio signals of packets transmitted and received; a relative position calculator configured to calculate relative positions of the M wireless terminals based on the distances among the wireless terminals in the group for the N wireless terminals selected and reselected; and an absolute position converter configured to convert a relative position of a child wireless terminal into an absolute positon of the child wireless terminal based on the relative positions of the M wireless terminals and absolute positions of at least three of the M wireless terminals where the absolute positions are known.

A vehicle is equipped with an electric storage device, a drive motor, an auxiliary that can be driven by a regenerative electric power, and a control unit. The control unit performs a non-chargeable control for causing the auxiliary to consume the regenerative electric power when the electric storage device is in a non-chargeable state, and performs a specific maneuver control for causing the auxiliary to consume the regenerative electric power even when the electric storage device is in a chargeable state in the case where an operational maneuver for making a change to an operation mode in which a larger amount of the regenerative electric power is generated is performed with the regenerative electric power generated.

A composition of a focused portion corresponding to a portion of a molecular ion is estimated as a partial composition based on a mass of the focused portion. An initial composition search range is modified based on the partial composition. A composition of the molecular ion is estimated as an overall composition based on a mass of the molecular ion under a modified composition search range. A way of modifying the composition search range may include a method for modifying a lower limit to a range of the number of atoms and a method for adding a new range of the number of atoms associated with a new chemical element.

An electronic device, and a method for executing a plurality of processes with the electronic device, wherein, in a resource-conserving manner, rapid response times are achievable, in that the electronic device, during operation, executes first and second processes (P1, P2), of which the first processes (P1) are executable as approximate solutions (P1-A) and as detailed calculations (P1-C). The electronic device includes a processor for executing processes (P1, P2) and an electronic unit or a multitasking-capable operating system. The electronic unit includes a component, which recognizes whether the processor is active, and serves, while the processor is active and a simultaneous execution of at least two processes is required, for executing the first processes (P1), in that it, itself, determines the approximate solution (P1-A) and sets such in the place of a detailed calculation (P1-C) determined with the processor.

A deterioration state estimation system of a secondary battery includes: a state variable measurement unit which measures a state variable including an output current and an output voltage of the secondary battery in operation at each prescribed timing; a preprocessing unit which outputs input data calculated on the basis of the measured state variable; and a deterioration state estimation unit which estimates a deterioration state of the secondary battery in operation through a trained deterioration state model using the input data, wherein the preprocessing unit includes a state variable processing unit which sets a unit amount of charge / discharge and a most recent section closest to a current time and one or more previous sections before the most recent section as a desired section based on the unit amount of charge / discharge used for calculating the input data, calculates, as section data, an amount of voltage change based on the state variable for each set section, includes the calculated section data in the input data, and outputs the input data.

A position estimation device includes: a selector configured to select N wireless terminals and reselect N wireless terminals from M wireless terminals; a distance calculator configured to calculate distances among wireless terminals in a group consisting of a parent wireless terminal and the N wireless terminals based on information on power of radio signals of packets transmitted and received; a relative position calculator configured to calculate relative positions of the M wireless terminals based on the distances among the wireless terminals in the group for the N wireless terminals selected and reselected; and an absolute position converter configured to convert a relative position of a child wireless terminal into an absolute positon of the child wireless terminal based on the relative positions of the M wireless terminals and absolute positions of at least three of the M wireless terminals where the absolute positions are known.

A self-position estimation accuracy verification method includes a step of moving a mobile object to a first check point, a step of acquiring first check information, a step of starting a self-position estimation using the first check information as an initial value, a step of moving the mobile object to a second check point while continuing the self-position estimation, a step of acquiring second check information, and a step of calculating a deviation between a position and a posture of the mobile object on the map estimated by the self-position estimation at the second check point and a position and a posture of the mobile object on the map indicated in the second check information, and verifying the accuracy of the self-position estimation based on the deviation.