391 results about "Simple computation" patented technology

Disclosed are an apparatus and method for controlling a radiation direction of a small sector antenna, used for a small wireless transmission device having limited power and calculation capabilities, capable of operating at a low power consumption with the necessity of simple calculation capabilities or without the necessity of even a few calculation capabilities. The apparatus for controlling a radiation direction of a small sector antenna includes a plurality of capacitance blocks including a plurality of capacitors each having one end commonly connected to corresponding parasitic elements and having a different capacitance. Capacitors having a capacitance corresponding to a radiation direction are selectively connected to corresponding parasitic elements through a plurality of switching units and a controller, thereby simplifying controlling and reducing power consumption for controlling the radiation direction.

The invention provides an off-the-shelf product solution to target the specific needs of commercial users with naturally parallel applications. A top-level, public API provides a simple “compute server” or “task farm” model that dramatically accelerates integration and deployment. A number of described and claimed adaptive scheduling and caching techniques provide for efficient resource and / or network utilization of intermittently-available and interruptible computing resource in distributed computing systems.

A coordinate input device interpolates sampling data, using less input data and simpler computing. The input data (coordinate information indicative of an input trace) are sampled both with a predetermined cycle (Tn), and at the end of a predetermined time interval after the sampling of the cycle Tn is complete. As a result of the two different samplings, not only the coordinate point determined by the sampling of cycle Tn, but also information indicative of a tangent vector at each coordinate point on the input trace are obtained. The coordinate point and the associated tangent vector information are thus output, so that a trace more faithful to the input trace is obtained using fewer coordinate points.

An input image signal 101 is divided into MC block units and, when coding processing is performed in these divided units, a motion compensation section 107 generates a motion-compensated prediction image 106a by detecting movement amounts in predetermined MC block units, a smoothing filter section 124 performs, with respect to the prediction image 106a, smoothing of pixels located at the boundaries of adjoining MC blocks on the basis of predetermined evaluation criteria, and a prediction residual signal 108, which is obtained from the difference between the prediction image 106b obtained by the smoothing, and the input image (input image signal 101), is encoded. Accordingly, it is possible to use relatively straightforward computation to perform processing, with respect to a prediction frame image generated by block-unit motion-compensated interframe prediction (MC), to adaptively smooth a discontinuous waveform generated between MC blocks of the prediction frame image, whereby the efficiency of low bit rate coding that employs interframe MC is improved.

Circuits, architectures, methods and algorithms for joint channel-code decoding of linear block codes, and more particularly, for identifying and correcting one or more errors in a code word and / or for encoding CRC (or parity) information. In one aspect, the invention focuses on use of (i) remainders, syndromes or other polynomials and (ii) Gaussian elimination to determine and correct errors. Although this approach may be suboptimal, the present error checking and / or detection scheme involves simpler computations and / or manipulations than conventional schemes, and is generally easier to implement logically. Since the complexity of parity-based error correction schemes increases disproportionately to the number of potential error events, the present invention meets a long-felt need for a scheme to manage error detection and / or correction in systems (such as magnetic recording applications) where there may be a relatively large number of likely error events, thereby advantageously improving reliability and / or performance in channel communications.

Light-splitting elements are arranged in at least two columns and two rows to form two pairs 1a, 1b and 1c, 1d. Each element splits incident light into light rays and makes them fall on a portion of a photosensing section right under itself and an adjacent photosensitive cell. The element 1a splits the incident light so that a primary color ray C1 and its complementary color ray C1′ enter an adjacent cell 2b and an underlying cell 2a, respectively. The element 1b makes a primary color ray C2 and its complementary color ray C2′ enter an underlying cell 2a and an adjacent cell 2a, respectively. The element 1c does the same as the element 1b. And the element 1d makes a primary color ray C3 and its complementary color ray C3′ enter an adjacent cell 2c and an underlying cell 2d, respectively. These photosensitive cells 2 perform photoelectric conversion, thereby outputting an electrical signal representing the intensity of the incident light. By carrying out simple calculations between the outputs of these cells, a color signal and a luminance signal are generated.

The present invention discloses a motor control method which uses a Space Vector Pulse Width Modulation (SVPWM). Data and instruction data are detected according to the operation state of the motor of the present carrier wave period and the modulation signal of each phase SPWM vector corresponding to the carrier wave period is computed. According to the modulation signal of each SPWM vector, the zero sequence component of the carrier wave period is added and the modulation signal of each phase SVPWM vector in the carrier wave period is obtained. The duty cycle of each phase of the carrier wave period is obtained according to the modulation signal of the SVPWM vector. Based on the duty cycle of the carrier wave period, a PWM control signal corresponding to each phase is generated. According to the PWM control signal, a PWM driving signal of the upper and lower bridge arms of a corresponding inverter is generated to control the turning on or off of each bridge arm of the inverter during the present carrier wave period. The method and device of the present invention have few steps to obtain the SVPWM signal, a simple computation and can use a cheaper chip to control the motor real time.

The invention discloses an automatic exposure control method for a digital photographic device. According to the automatic exposure control method, a partitioning counted brightness weight model corresponding to a photographing application scenario of the digital photographic device, the target brightness of a target frame image of the photographing application scenario and an exposure curved line corresponding to the photographing application scenario are selected, and the brightness of a current image is calculated in a partitioned mode; then, the average brightness of whole images is calculated, an environment photometry compensation coefficient is determined according to the average brightness, a difference value Delta Bv between the brightness of an image of a current frame and the target brightness serves as an adjustment condition, and the exposure time and an aperture value of a next frame are determined. According to the automatic exposure control method, image brightness estimation is carried out in the manner of adjusting different weight coefficients in a self-adaptation mode according to different scenarios and different collection targets, and photographing scenarios in actual application can be represented better; under the condition of not increasing the software cost and the hardware cost, accurate control over automatic exposure is achieved through simple calculation, and the photographing quality can be effectively improved.

A game progress control device administers positions of player characters and a referee using positions corresponding to their waists. A shadow image generating device generates shadow images of all the player characters and the referee character who appear on the screen of the monitor. A density setting device sets the density of each shadow based image based on the position of the appearing character on a soccer field using an x-coordinate of his waist. Accordingly, the shadow images of specified densities belonging to the individual appearing characters can be generated by simple calculation.

A method and apparatus for determining capacitance of wires in an integrated circuit is described. The capacitance information derived according to the invention can be used, for example, to calibrate a parasitic extraction engine or to calibrate an integrated circuit fabrication process. The capacitance information can also be used for timing and noise circuit simulations, particularly for deep sub-Micron circuit design simulations. Briefly, the invention allows measurement of both total capacitance of a line and cross coupling capacitance between two lines by applying predetermined voltage signals to specific circuit elements. The resulting current allows simple computation of total capacitance and cross coupling capacitance. Multiple cross coupling capacitance can be measured with a single device, thus improving the art of library generation, and the overall method is free of uncertainties related to transistor capacitance couplings. The capacitance values obtained can then be used to calibrate procedures, processes, devices, etc.

The invention provides a method for identifying a trip mode based on mobile phone signal data. The method is characterized by comprising the following steps of: establishing a virtual sensor network; then configuring reasonable value ranges of three properties of five trip modes according to prior knowledge, wherein the value ranges are represented by using segmented linear functions and are called as probability mapping functions; acquiring the mobile phone signal data; computing a probability numerical value based on a line by using path matching based on the virtual sensor network; computing probability numerical values based on three properties such as distance, time consumption and speed; and judging which trip mode a mobile phone user belongs to by using the probability numerical values. The method has the advantages that: the conventional communication network resource is fully relied on, a method which realizes flexible structure, easiness of expansion and simple computation is adopted, the mobile phone signal data of a single complete trip process of a traveler are taken as inputs, automatic identification of five conventional trip modes is realized, and trip mode-relatedinformation with high timeliness is further acquired.

The present invention involves a method and an apparatus capable of calculating, in real time, option-embedded coupon bearing bonds by option adjusted spread and linear approximation. The linear approximation uses a first order partial derivative to calculate a vector of sensitivities of bond price against yield curve by which an nth order linear approximation of the bond price can be approximated. The apparatus comprises a plurality of trader's workstations, one of which may serve as an option adjusted spread lattice engine for full lattice computation. The trader's workstations may be actuated by a triggering object, which receives yield curve, bond price, spread, volatility and other bond information updates from a database server. For each security, the Lattice Engine uses the lattice method to compute the price of the security and a vector of partial derivatives of the security price with respect to the yield curve. While other workstations, upon receiving any update of the yield curve, use the results of the Lattice Engine to perform first order approximation of the security prices. Since linear approximation is a simple calculation, the price update of a large number of securities can be carried out in real time. Because the Lattice Engine recalculates the first order partial derivatives when the yield curve has changed significantly, the linear approximations are very accurate in general.

The invention discloses a method for measuring power transmission line pole and tower inclination based on video differences, comprising the following steps: acquiring a pole and tower image through a fixed-focus camera, pretreating the pole and tower image to obtain data of the pretreated image, and calculating an angle of inclination of the power transmission line pole and tower according to the data of the pretreated image. According to the invention, the angle of inclination of the power transmission line pole and tower is acquired only by image processing and simple calculation without establishing accurate mathematical models, and the enforcement is simple; global data of the angles of inclination of the whole power transmission line poles and towers can be acquired by programming to centralized processing images and carry out relative calculation in a remote monitoring center, thus the invention is beneficial for realizing the automatic security monitoring, so that the invention has important social significance.

A method for quickly measuring the radon exhalation rate in a closed-loop manner comprises a measurement process and a computation process. During the measurement process, a long time interval is adopted, that is, measurement is conducted once for every 5-120 min, and once measurement is a period. Through the adoption of measured data in two periods, an accurate radon exhalation rate can be obtained quickly through a simple computational method; during the measurement process, the two measurement periods are equal. A radon meter adopting the frequently-used electrostatic collection method actually measures the concentration of <218>Po and is obvious in measurement delay. When the radon meter adopting the frequently-used electrostatic collection method measures a variable radon concentration in a tracking manner, a measured value has to be corrected; through the correction on the measured value, an accurate radon exhalation rate can be obtained quickly.

A fall detection device is provided, which accomplishes a fall judgment on acceleration by a simple calculation and improves uniformity of effective threshold value for the acceleration judgment as to a direction of an applied acceleration vector. The fall detection device produces a fall detection signal, when an absolute value of each axis component of an acceleration measured by a three-axis acceleration sensor is less than a first threshold value, and when a sum of the absolute values of the axis components of the acceleration is less than a second threshold value that is 1.5 times to twice the first threshold value.

This invention is a one-dimensional elementary motion detector that measures the linear optical flow in a small subsection of the visual field. This sensor measures motion by tracking the movement of a feature across the visual field and measuring the time required to move from one location to the next. First a one-dimensional image is sampled from the visual field using a linear photoreceptor array. Feature detectors, such as edge detectors, are created with simple circuitry that performs simple computations on photoreceptor outputs. The detection of the feature's location is performed using a winner-take-all (WTA) mechanism on feature detector outputs. Motion detection is the performed by monitoring the location of the high WTA output in time to detect transitions corresponding to motion. The correspondence problem is solved by ignoring transitions to and from the end lines of the WTA output bus. Speed measurement is performed by measuring the time between WTA output transitions. This invention operates in a one-dimensional subspace of the two-dimensional visual field. The conversion of a two-dimensional image section to a one-dimensional image is performed by a specially shaped photoreceptor array which preserves image information in one direction but filters out image information in the perpendicular direction. Thus this sensor measures the projection of the 2-D optical flow vector onto the vector representing the sensor's orientation. By placing several of these sensors in different orientations and using vector arithmetic, the 2-D optical flow vector can be determined.

The invention provides an equal-loudness contour-based loudness compensation method, which comprises the following steps of: regulating a volume of an input signal, measuring sound pressure levels corresponding to all available volume values, and in each sound pressure level, filtering an input signal by using a preset frequency filter, and multiplying by a weighting coefficient of the preset frequency filter to obtain a signal; and superposing the input signal in each sound pressure level in a plurality of sound pressure levels corresponding to all the available volume values and the signal obtained through filtering and weighting. The method overcomes the defect that when the conventional audio signal is small in volume, the loudness of partial frequency band is too low, and ears of a human body cannot feel the loudness, so that the heard sound is dry and tedious; by the method, the loudness of input signals of partial frequency band is compensated, the sound is loud and full and meets the requirement of people on acoustic comfort; moreover, a sound level meter and the filter and simple computation are only required to realize the loudness compensation of the audio signal, so that the structure is simple and the cost is low.

The invention discloses a parallel computation method for Newton power flow of a large-scale electric power system, which belongs to the technical field of safe analysis and computation of electric power systems. A modified equation set of the Newton power flow is resolved by using a computer according to a parallel cluster through a program in combination with parallelization technology for updating a Jacobian matrix by a generalized minimal residual method combined with a quasi-diagonal parallel preconditioner so as to realize parallelization of a power flow resolving process of the large-scale electric power system. The method does not need network partitioning in any form and has simple computation and high generality; a forward / backward sweeping dependency relationship does not exist inside an algorithm, and parallel efficiency and computation speed are high; and computation can be performed by the common parallel computer and the parallel cluster and the method is convenient to popularize and apply, and the like. The method can be applied to the parallel power flow computation of the electric power system and is particularly suitable for the parallel computation of the Newton power flow of a large-scale complex electric power system.

The invention discloses a Zigbee networks visible light positioning wireless charging system and a method. The system includes a wireless charging device and a Zigbee network node; the wireless charging device and the Zigbee network node communicate with each other through a Zigbee protocol; the wireless charging device includes a wireless charging module and a light source detection module; and the Zigbee network node comprises a gateway node, a coordinator and a terminal node, wherein the coordinator is used for coordinating the communication between the gateway node and the terminal node. As for a situation that wireless charging does not require accurate positioning, the invention provides a simple and convenient visible light positioning scheme. The visible light positioning scheme has the advantages of high positioning efficiency and simple computation, and can greatly improve wireless charging efficiency.

The invention discloses an individualized pharmacy report generation method and system. The method comprises the steps: acquiring sample information; inputting library data and original sequencing data obtained by genetic testing in advance; performing bioinformatics analysis on the original sequencing data; outputting a bioinformatics analysis result, carrying out examination and checking on a drug gene polymorphic site detection result and a corresponding bioinformatics analysis process, generating a risk drug list and a pharmacy guidance, and generating an individualized pharmacy report andthe like. According to the invention, the method is convenient to implement based on the computer program. Related data can be invoked automatically and conveniently as long as a checked person or another user inputs sample information at the user terminal; the individualized pharmacy report is generated and is outputted by the user terminal, so that the error caused by the manual operation is reduced. The user does not need to master the relevant medical and computer professional knowledge and only needs to make the simple compute operation, so that the user experience is improved. The individualized pharmacy report generation method and system can be widely applied to the technical field of the medical information engineering.

Disclosed is an apparatus for measuring a fluorescence lifetime. The apparatus for measuring the fluorescence lifetime comprises an excitation light generator that generates excitation light to be irradiated on a sample including fluorescence molecules; a fluorescence photon collecting unit that collects a plurality of fluorescence photons generated by irradiating the excitation light on the sample; a light sensor that converts the collected fluorescence photons into a fluorescence electrical signal; and a fluorescence lifetime signal processor that determines the fluorescence lifetime by calculating the average time of the fluorescence electrical signal with respect to a predetermined apparatus delay time. According to the above configuration, the present invention can accurately and precisely measure a fluorescence lifetime in a short measurement time by easy calculation.

The invention relates to a method for improving the message capacity of a mobile ad-hoc network by the combination of the link layer messages, belonging to the computer communication field. The method includes that firstly, the newly-produced network layer message is added into the different buffer queues of a sending buffer at the sending terminal according to the next hop address and the network layer message is combined with the message at the tail of the former queue and processed according to the length of the network layer message or is stored as an opposite message; when the received link layer message is extracted at the receiving terminal, the data length of the link layer is compared with the length of the network layer message and then judged, and each network layer message extraction is completed through cyclic processing. With the method of the invention, only little modification to the current protocol stack can help obviously improve the message capacity in the mobile ad-hoc network under high busy state; the method has the advantages of simple computation, small computation complexity and easy achievement.

A method and apparatus for determining capacitance of wires in an integrated circuit is described. The capacitance information derived according to the invention can be used, for example, to calibrate a parasitic extraction engine or to calibrate an integrated circuit fabrication process. The capacitance information can also be used for timing and noise circuit simulations, particularly for deep sub-micron circuit design simulations. Briefly, the invention allows measurement of both total capacitance of a line and cross coupling capacitance between two lines by applying predetermined voltage signals to specific circuit elements. The resulting current allows simple computation of total capacitance and cross coupling capacitance. Multiple cross coupling capacitance can be measured with a single device, thus improving the art of library generation, and the overall method is free of uncertainties related to transistor capacitance couplings. The capacitance values obtained can then be used to calibrate procedures, processes, devices, etc.

By a simple computation, orthogonal errors from an orthogonal modulator and an orthogonal demodulator are separately corrected. Based on the amplitude of a demodulated signal, an orthogonal-error detection unit (320) detects orthogonal errors from an orthogonal modulation unit (140) and an orthogonal demodulation unit (230). Specifically, according to the distribution of transmission signal points on an I-Q plane, demultiplexers (321 and 322) in an orthogonal-error detection unit (320) separate a demodulated signal into a signal on the I-axis and a signal on the Q-axis. Zero-crossing detection units (325 and 326) detect the amplitudes of the separated signals at the intersection of the I- and Q-axes. The orthogonal-error detection unit (320) detects the orthogonal errors based on results from comparing the amplitudes at said intersection. A gain control unit (330) controls settings for a transmission orthogonal-error correction unit (120) and reception orthogonal-error correction unit (250) according to the detected orthogonal errors.

The invention provides a camera optical axis direction calculation method based on high-precision posture information, and the method comprises the steps: calculating the orientation (shown in the description) of a camera optical axis in a rail coordinate system according to the orientation (shown in the description) of a scanning camera optical axis in a satellite system {b} and the conversion matrix Abo of the satellite system {b} relative to the rail coordinate system {o}; calculating the orientation (shown in the description) of the camera optical axis in an inertial coordinate system {i} according to the orientation (shown in the description) of the camera optical axis in the rail coordinate system {o} and a conversion matrix Aoi of the rail coordinate system {o} relative to the inertial coordinate system {i}; calculating the orientation (shown in the description) of the camera optical axis in an earth-fixed reference coordinate system according to the orientation (shown in the description) of the camera optical axis in the inertial coordinate system {i} and a conversion matrix (HG) of the inertial coordinate system {i} relative to the earth-fixed reference coordinate system. The method can achieve the real-time calculation on the ground and correct the orientation of the optical axis, also can enable the information of a rail and the earth-fixed reference coordinate system on the ground to be stored on a satellite in advance so as to autonomously carry out real-time calculation and correct the orientation of the optical axis, and can improve the imaging capability of the satellite in a simple mode.

The present invention is directed to improving the accuracy with which a stationary array sensor provides cross directional measurements by providing an offset compensation to the stationary array sensor using the output of a scanning sensor associated with the manufacturing process. Exemplary embodiments correlate outputs from the stationary sensor array and the scanning array using a data reconciliation process. For example, a practical, real time data reconciliation of measurements from the scanning sensor and measurements from the stationary array sensor is achieved by computing offsets using a bank of Kalman filters to correlate outputs from the two sensors for each measurement zone, wherein each filter possesses a relatively simple computational structure. The Kalman filters can fuse the outputs from the stationary array sensor and the scanning sensor to track, and compensate, drift of the stationary array sensor.

The invention discloses a data storage management method for an OTP flash memory under an embedded environment, which comprises the following steps of: performing classification management on a file system area and a user data area, and performing different data storage management methods on the two areas so as to realize effective management of the OTP flash memory. In common data storage, address mapping can be implemented by simple calculation and combination of a bad block table and a page replacing table so as to simplify the management algorithm complexity; and the consumption of system resources is reduced by adopting a forward programming method in a file system.