166results about How to "Low computing performance" patented technology

In an audio transmission system, an input signal is split up into two spectral portions in a transmitter. These spectral portions are coded by their own respective coder. The low-frequency signal portion is coded by a regular narrow-band coder and the high frequency portion is coded using a coder that outputs LPC codes and signal amplitude codes. In the receiver, the low frequency signal portion is reconstructed by a narrow-band decoder and the high frequency portion is reconstructed by applying a high pass filter to a white noise signal and applying an LPC filter that is controlled by the LPC codes to this filtered white noise signal and adjusting the signal amplitude with an amplifier that is controlled using the amplitude codes of the transmitter. The reconstructed low frequency signal and the reconstructed high frequency signal are then combined to yield a reconstructed output signal containing both frequency ranges.

A control system includes a clustered architecture having a master controller, a central control section including one or more first remote controllers under direct control of the master controller, and a distributed control section including a cluster controller controlled by the master controller. The cluster controller controls the activities of one or more second remote controllers. Each of the first and second remote controllers are utilized to drive one or more axes.

An apparatus and a method used to determine the speed and direction of the wind experienced by a wind turbine are provided. The apparatus comprises at least one sensor fixed to the rotor of the wind turbine, an angular sensor to measure the angular position of the rotor of the wind turbine, and a circuit which converts the relationship between the output of the at least one sensor and the output of the angular sensor into the speed and direction of the wind experienced by the wind turbine. According to the invention, the sensing apparatus can measure the wind speed and direction in three dimensions. In addition, mounting the sensors directly to the rotor of the wind turbine results in a very simple and robust installation. Mounting the sensors directly to the rotor also eliminates the turbulence from the rotor and the nacelle of the wind turbine from affecting the sensors.

An information communication method selects between a visible light communication mode in which information is obtained from a subject using an image sensor having a plurality of exposure lines and a normal imaging mode. The method includes obtaining first image data by image capture with a first exposure time in the normal imaging mode. When an image is presented that prompts a user of a terminal device including the image sensor to move the terminal device to enable the information to be obtained, second image data is obtained by image capture with a second exposure time, shorter than the first exposure time, in the visible light communication mode. The information is obtained by demodulating data specified by a direction in a pattern of a bright line appearing in the second image data and corresponding to the exposure lines that is substantially perpendicular to the exposure lines.

There is provided a device capable of evaluating a composition by a computer in the Internet. First, a task of a composition corresponding to the grade level of a learner and evaluation tasks are presented on the Internet. A compositional essay created by the learner according to the presented tasks and terms is evaluated by multiple methods associated with the evaluation tasks and the evaluation result is distributed to a grader responsible for evaluating the learner by means such as e-mail. The grader adds a comment to the evaluation result, records it in the server on the Internet, and displays the evaluation result in a graph or the like so that the learner can easily know the evaluation result. The apparatus for grading and evaluating compositional essays of the present invention is characterized in that (1) a compositional essay is divided into multiple fields such as structure, subject matter, expression, and topic and each of these fields is evaluated by the presence or lack of specified keywords and (2) the individuality of the content is evaluated by the amount and range of unique vocabulary contained in the compositional essay.

Methods and apparatuses for detecting and recovering from a buffer overflow attack are provided. A method of recovering an operation state of a processor from a buffer overflow attach includes: detecting whether a buffer overflow attack is made on any write operation while storing write operations that are potential targets of buffer overflow attacks in a predetermined location instead of an original destination to store write operations; storing the contents stored in the predetermined location at a predetermined interval in the original destination for storing write operations if no buffer overflow attack is detected and discarding unsafe write operations subsequent to a buffer overflow attack if a buffer overflow attack is detected; and ignoring the unsafe write operations subsequent to the buffer overflow attack if a buffer overflow attack is detected. Therefore, a buffer overflow attack occurring in a computer can be effectively detected, and damage of a system which is attacked can be minimized and the system can be recovered or return to the original state before the attack. A system can be effectively protected while minimizing reduction in performance of the computer system according to a method used to implement the present invention, thereby greatly improving the environments under which the computer and the Internet are used.

Cardiac Output (CO) has traditionally been difficult, dangerous, and expensive to obtain. Surrogate measures such as pulse rate and blood pressure have therefore been used to permit an estimate of CO. MEMS technology, evolutionary computation, and time-frequency signal analysis techniques provide a technology to non-invasively estimate CO, based on precordial (chest wall) motions. The technology detects a ventricular contraction time point, and stroke volume, from chest wall motion measurements. As CO is the product of heart rate and stroke volume, these algorithms permit continuous, beat to beat CO assessment. Nontraditional Wavelet analysis can be used to extract features from chest acceleration. A learning tool is preferable to define the packets which best correlate to contraction time and stroke volume.

A distributed gaming platform is provided wherein mobile devices (e.g., a smartphone) with motion sensors are used as input controllers of a game. A cloud-based gaming rules engine manages multiple players and the content for display in the game. The game output is displayed on any web-enabled display which is physically distinct from the mobile device. Multiple players may simultaneously play the same game, or different games, in multiple geographic locations.

A harmonic-characteristics based current pattern matching method for the non-intrusive power load monitoring and disaggregation is provided in this present invention, on the basis of establishing the load signature database, which comprises electrical appliance registration and load state word space initialization, data acquisition and data preprocessing, feasible state word space search based on table looking-up, the optimal matching of current pattern, and display and output of the monitoring and disaggregation results. The method improves the accuracy of disaggregation, and can achieves exact identification of operating states of appliances, and also can reduce the cost.

An information processing program causes a computer to execute: encoding information to be transmitted, to determine a luminance change frequency; and outputting a signal of the determined luminance change frequency to cause a light emitter to change in luminance according to the determined luminance change frequency to transmit the information. In the encoding, each of a first frequency and a second frequency different from the first frequency is determined as the luminance change frequency. In the outputting, each of a signal of the first frequency and a signal of the second frequency is output as the signal of the determined luminance change frequency, to cause the light emitter to change in luminance according to the first frequency during a first time and change in luminance according to the second frequency during a second time different from the first time after the first time elapses.

A method for displaying thumbnails on a mobile device includes allocating at least two buffers in a storage system of the mobile device, where the at least two buffers comprise a displayed thumbnail buffer and a current thumbnail buffer. Indices of the thumbnails on are displayed on a display screen of the mobile device, and thumbnails from the displayed thumbnail buffer are read if the thumbnails correspond to the indices are found in the displayed thumbnail buffer. In addition, the method further includes reading the thumbnails from the current thumbnail and displaying the thumbnails on the display screen of the mobile device.

The invention relates to a positioning system and method based on bionic polarized light navigation. The positioning system comprises an electronic compass, a bionic polarized light angle sensor, a horizontal sensor, an astronomical calendar query module and a computer, wherein the computer is respectively and mutually connected with the electronic compass, the bionic polarized light angle sensor and the astronomical calendar query module. The positioning system and method disclosed by the invention combine astronomical navigation with the polarized light navigation, obtain the longitude and latitude of an observing point through calculation and realize positioning by natural phenomena without man-made systems, such as a secondary planet and a radio base station; and the positioning system disclosed by the invention has the advantages of simple structure, low requirement on calculated performance, low production cost, less positioning process step, short time, high measurement accuracy and very high practicability.

A method for capturing a sequence of video images, by means of an imager including an estimation of the parameters of a model of global motion between successive images. In one embodiment, the method comprises a measurement of local motions on edges of the images, and the estimation of the parameters of the global motion model is performed using the result of the measurement of local motions on the edges of the images.

A method of reconstructing an (n+1)-dimensional image function ƒ representing a region of investigation comprises determining the image function ƒ from n-dimensional or less dimensional Radon data comprising a plurality of projection functions pθ(t) measured corresponding to a plurality of predetermined projection directions (Θ), wherein the image function ƒ is determined as a sum of polynomials multiplied with values of the projection functions pθ(t). Imaging methods, imaging devices, and computer tomography devices using this reconstruction method are described.

The invention claims a feature recognition method of motor imaginary electroencephalogram signal based on CBLSTM algorithm model. The algorithm model comprises the following steps S1: collecting EEG signals; S2, preprocessing the original EEG signal; S3, extracting frequency domain characteristics of EEG signals by using convolution neural network; S4, extracting time domain features of EEG signals by using a two-way long-short-term network; 5, classify that EEG signals by the softmax regression method; S6: Output the final EEG signal classification result. The invention effectively improves the recognition rate of a plurality of EEG signals.

A method for capturing a sequence of video images, using an imager including an estimation of the parameters of a model of global motion between successive images. The method may include measurement of local motions on edges of the images, with the estimation of the parameters of the global motion model performed using the result of the measurement of local motions on the edges of the images.

A system (100) of processing audio data, comprising a decoding unit (102) and a determining unit (102, 106) having first determining means (102) and second determining means (106). The decoding unit (102) is adapted to decode encoded audio data to generate decoded audio data. The first determining means (102) is adapted to determine properties of the decoded audio data and / or of reproduction conditions under which the decoded audio data is to be reproduced, and the second determining means (106) is adapted to determine an amount of reverberation and / or of cross-talk to be added to the decoded audio data based on the determined properties of the decoded audio data and / or of the determined reproduction conditions under which the decoded audio data is to be reproduced.

Provided is an inter-frame wavelet coding apparatus that can reduce the computation complexity of a decoder by adjusting a decomposition level and a filter length based on the information amount of a frame during wavelet transform and a method therefor. The inter-frame wavelet coding apparatus includes: a Motion Compensated Temporal Filtering (MCTF) unit for computing a motion vectors of a group of pictures (GOP) and filtering the GOP with respect to the temporal axis, to thereby obtain filtered frame; a wavelet transforming unit for performing spatial wavelet transform on the filtered frame and outputting a wavelet coefficient; a quantization unit for quantizing the wavelet coefficient; an entropy coding unit for entropy-coding the motion vector computed in the MCTF unit and the quantized wavelet coefficient, to thereby generate an entropy-coded bit stream; and a wavelet filter managing unit for selecting a decomposition level and a filter length for the wavelet transforming unit based on motion estimation information of the GOP video computed in the MCTF unit, wherein the decomposition level and the filter length are included in the entropy-coded bit stream.

A method for detecting a fault in an exciter circuit, suitable for use in a brushless generator, the exciter circuit including (a) an exciter armature winding, having a plurality of armatures, arranged to generate a multiphase AC signal, each armature of the plurality of armatures providing a respective sub-signal component of the multiphase AC signal, and (b) a rectifier circuit for receiving the sub-signals via the respective armatures, the rectifier circuit comprising a plurality of components arranged to rectify the sub-signals to provide a rectified output signal, wherein the method includes the steps of: acquiring a respective operational sub-value for a first characteristic of each of at least two of the respective sub-signals; deriving an operational value indicative of a relationship between the acquired respective operational sub-values; determining whether a fault has occurred in the exciter circuit on the basis of the derived operational value.

In order to realize asynchronous type system assuring the consistency of data with the function of disk subsystems without the need of introducing new software to a host unit and without the deterioration of the performance of a main center, in a remote copy system which copies the data to the disk subsystems of the remote center for duplicating the data in the disk subsystems of the main center, the disk subsystems give serial numbers and times to the data together with writing said data to the storage devices in the disk subsystem and transfer said data to the other disk subsystems, and the other disk subsystems arrange the two or more data in the sequence of the serial numbers, decide the oldest time among the latest time given to each of the disk subsystems communicating among the disk subsystems and the data given with the time not later than the decided oldest time are the objects of writing to each of the disk storage devices.

In a method for the controlled execution of a program (26), the program (26) being intended for a virtual machine (VM, VM′), on a portable data carrier, wherein the data carrier has a processor that executes at least a first and a second virtual machine (VM, VM′), the program (26) is executed both by the first and by the second virtual machine (VM, VM′). If, during execution of the program (26), a difference is found between the operating state of the first virtual machine (VM) and the operating state of the second virtual machine (VM′), execution of the program is aborted. A data carrier and a computer program product exhibit corresponding features. The invention provides a technique for the controlled execution of a program, which technique prevents security risks due to an attack or a malfunction of the data carrier.

For steering a vehicle around obstacles, proceeding along a path from a starting position to an end position, the path including linear sub-paths which are defined by an increment η and a steering angle δ, a method includes: a) determining a maximum steering angle range and a maximum and a minimum increment range; b) determining the present distance eP from the end position, the target angle θO, and the angle difference eθ between the present vehicle angle and the target angle; c) performing an optimization method for ascertaining a sub-path by minimizing the value of a cost function lO assigned to the sub-path; d) determining the new position by adding the ascertained sub-path to the present position; and e) repeating steps (b) through (d) until the end position is reached.

An autostereoscopic 3D display comprises a first unit (503) for generating an intermediate 3D image. The intermediate 3D image comprises a plurality of regions and the first unit (503) is arranged to generate a first number of image blocks of pixel values corresponding to different view directions for the region regions. The number of image blocks is different for some regions of the plurality of regions. A second unit (505) generates an output 3D image comprising a number of view images from the intermediate 3D image, where each of the view images correspond to a view direction. The display further comprises a display arrangement (301) and a driver (507) for driving the display arrangement (301) to display the output 3D image. An adaptor (509) is arranged to adapt the number of image blocks for a first region in response to a property of the intermediate 3D image or a representation of a three dimensional scene from which the first image generating unit (503) is arranged to generate the intermediate image.

There is described a diagnosis method and a system comprising a structure-born noise sensor which transmits, in a bandpass filtered manner, a measuring signal based on the mechanical resonance frequency and capacity thereof and on an inductance and an evaluating device in which the frequency, at which the measuring signal level exceeds a predetermined threshold value, is defined and which is used for producing an error signal, when the frequency exceeds a second predetermined threshold value. As far as the diagnosis performance requires a small number of electronic components and a low power supply, the diagnostic can be integrated into existing devices, in particular into process instrumentation field devised for which a restricted quantity of operating power is available. The method and the system can be used for identifying a valve leakage with the aid of an electro-pneumatic positional regulator.

Distributed traffic signal control system structured in four stages includes central control stage as first level, regional control stage as second level, key road junction control stage as third level. Characters are that road junction control stage or extended virtual road junction control stage as fourth level is setup under the third level. Main device is central controlling machine in the central control stage. Main device is regional controlling machine in the regional control stage in charge of coordinated controlling key road junction controlling machine. Main device is key road junction controlling machine in the key road junction control stage in charge of coordinated controlling road junction controlling machines or virtual road junction controlling machines. Main device is road junction controlling machine in charge of controlling traffic light on / off in road junction. Virtual road junction controlling machine exists in software logically, and does not exist physically.

The invention relates to the technical field of electric power equipment operation and maintenance management, and particularly relates to an electric power equipment state monitoring and evaluation and command system which comprises a panoramic data integration module, an equipment state health archive module, an equipment state monitoring module, an equipment operation and maintenance managementand control module, a data mining analysis module and a production command driving cabin module. The electric power equipment state monitoring and evaluation and command system has the advantages that access control, secondary data processing, unified modeling and storage can be carried out on accessed panoramic data by the panoramic data integration module, so that accurate and reliable data access can be guaranteed, and the electric power equipment state monitoring and evaluation and command system is excellent in retrieval and computational performance; data support service can be providedto follow-up equipment state monitoring and evaluation and production command by the equipment state health archive module; electric power equipment states can be monitored, evaluated and analyzed bythe equipment state monitoring module, the equipment operation and maintenance management and control module and the data mining analysis module on the basis of stored equipment state data, and accordingly intelligent support can be provided to accurately mastering equipment states, risk information and safety operation.

The invention discloses a wireless cellular network flow prediction method based on deep transfer learning and cross-domain data fusion, and belongs to the technical field of intelligent communication. Similarity among three services of short messages, telephones and the Internet and the similarity among different regions are analyzed, a plurality of cross-domain data sets is fused, and a space-time cross-domain neural network model is adopted to predict the wireless cellular traffic; a cross-service and region fusion transfer learning strategy based on a space-time cross-domain neural networkmodel (STC-N) is provided, and the prediction precision of a target domain is improved according to data characteristics of a source domain. The method can verify that the more comprehensive the considered data set is, the higher the prediction precision of the model is; in addition, the proposed transfer learning strategy can reduce the training data, calculation capability and generalization capability required for constructing the deep learning model.

A system for scanning cinematographic film so as to produce digital images corresponding to the images on frames of the film is provided. The system includes means for scanning the film, means for displaying the digital images obtained by scanning the film, and image processing means. The image processing means includes means for adjusting the appearance attributes of the digital images obtained and further includes (a) means for displaying the output signal level versus time in graphical form for the images obtained, and / or (b) means for displaying the luminance, chrominance and saturation of the images obtained in graphical form on polar axes.