1973results about How to "Avoid cumbersome" patented technology

<heading lvl="0">Abstract of Disclosure</heading> Before use, a population of tamper-resistant cryptographic enforcement devices is partitioned into groups and issued one or more group keys. Each tamper-resistant device contains multiple computational units to control access to digital content. One of the computational units within each tamper-resistant device communicates with another of the computational units acting as an interface control processor, and serves to protect the contents of a nonvolatile memory from unauthorized access or modification by other portions of the tamper-resistant device, while performing cryptographic computations using the memory contents. Content providers enforce viewing privileges by transmitting encrypted rights keys to a large number of recipient devices. These recipient devices process received messages using the protected processing environment and memory space of the secure unit. The processing result depends on whether the recipient device was specified by the content provider as authorized to view some encrypted digital content. Authorized recipient devices can use the processing result in decrypting the content, while unauthorized devices cannot decrypt the content. A related aspect of the invention provides for securing computational units and controlling attacks. For example, updates to the nonvolatile memory, including program updates, are supported and protected via a cryptographic unlocking and validation process in the secure unit, which can include digital signature verification.

The invention belongs to the technical field of multimedia and in particular relates to a method and a system for recommending music. The method comprises the following steps of: a, accessing a page server through a mobile terminal, browsing page information, and requesting a resource server to acquire page data which is required, wherein the page data comprises music resources and music recommending data; b, recording behaviors of users on accessing of the page server, and recording music acquisition behaviors of the users on the resource server and music resource information which is acquired; c, acquiring behavior records of the users, and classifying the users according to the behavior records; and d, classifying songs in a song classification mode, and generating corresponding song recommending lists according to different user types. By adoption of the invention, the users can more quickly and more effectively listen to favorite songs, so that personalization requirements of the users are met, and a contradiction between mass of the songs and the personalization of user favor is solved.

The invention concerns a device for adjusting the position of a screw (13) that is able to move a part of a surgical instrument, said device (4) comprising: —a stem (41) comprising a tip (42) suited to the head (130) of the screw (13), —an actuated system (45) for driving said stem (41) in rotation, —communication means to communicate with a control unit (21), such that the control unit (21) transmits to the actuated system (45) the number of turns to apply to the stem (41) to reach the target position of the screw (13). The invention also concerns a surgical system for alignment of surgical guide means (14, 15), comprising: —a positioning unit comprising a fixed part (11) and a mobile part (12) supporting the surgical guide means (14, 15), the position of said mobile part (12) being adjustable with respect to the fixed part (11) by screws (13), —a referencing unit for detecting the position of the positioning unit with respect to a target position of the surgical guide means, —a control unit (21) for computing the target position of screws (13), —said device (4) for adjusting the positions of the screws (13).

The invention discloses a pointer instrument reading identification method. The method comprises the steps of extracting a dial plate, removing interference, and correcting the dial plate by using affine transformation; performing circle detection and straight line detection on the dial plate to obtain predicted circle center and pointer angle; based on features of a scale connected domain on thedial plate, screening out the scale connected domain, performing linear fitting on the scale connected domain, calculating an intersection point of every two fitting straight lines, and performing screening verification on a to-be-selected circle center by utilizing the predicted circle center and pointer angle to obtain the circle center of the dial plate, wherein a distance from the centroid ofthe scale connected domain to the circle center on the dial plate is the radius of the dial plate; and according to information such as the circle center of the dial plate, the radius of the dial plate, the straight lines of a pointer, extracting an arc scale bar of the dial plate, expanding the arc scale bar in a rectangular shape, then according to horizontal coordinate distribution of scale onthe rectangular scale bar, performing minimum and maximum scale detection, noisy point removal and scale insertion, and finally in combination with the pointer angle, calculating reading of the dial plate. The method is high in universality and high in timeliness; and the reading has relatively high accuracy.

The invention discloses a mobile terminal which is provided with a positive screen and a back screen. The mobile terminal comprises a state judgment module, a degree judgment module and a switching module; the state judgment module is used for judging whether the mobile terminal is currently in a rotating state or not when a first screen of the mobile terminal is in a bright screen state, wherein the first screen is the positive screen or the back screen; the degree judgment module is used for judging whether rotation of the mobile terminal reaches the preset rotation degree or not when the mobile terminal is currently in a rotating state; the switching module is used for switching display content in the first screen to a second screen for displaying when rotation of the mobile terminal reaches the rotation speed, wherein the second screen is the positive screen or the back screen and is different from the first screen. The invention further discloses a screen content switching method. According to the mobile terminal and the screen content switching method, switching of the content between the two screens can be automatically completed when a user uses the mobile terminal with the two screens, and therefore the user experience is improved.

The invention discloses a method for nonlinearly constructing the three-dimension model of a human face from a single image under the support from a three-dimension human face database. A group of characteristic points are extracted first according to an input image, and then, the parameters of head gestures in the input image are automatically estimated according to an average human face model in the human face base; after the gesture is restored, a neighborhood is determined in the three-dimension human face database for a given human face image according to a similarity measuring function; wherein, the value of the neighborhood is adaptively determined through a cross verification algorithm; an individualized three-dimension human face model is synthesized through a neighborhood interpolation algorithm; finally, a texture mapping is solved through the extracted characteristic points. In the method for constructing the three-dimension model of the human face, a high-precision three-dimension human face animation can be obtained and applied to separate single image under different experimental conditions so as to synthesize the three-dimensional model, thus ensuring a sense of reality of the human face animation; meanwhile, a verbose of manual division of the human face lacune area can be avoided; the production efficiency of the human face animation is enhanced; the method is more stable and efficient relative to the iterative algorithm in the calculating process of generating the three-dimension human face model; furthermore, the generated three-dimension human face model has textural information; a high-precision three-dimension human face animation with the sense of reality can be generated in real time.

The invention relates to the technical field of image processing, and proposes a brain disease classification system based on a self-attention mechanism, aiming at solving the technical problems of low classification accuracy caused by the complicated process of preprocessing, feature extraction and feature selection of magnetic resonance images required in the classification and diagnosis of brain diseases. For this purpose, the brain disease classification system based on the self-attention mechanism in the invention comprises the following steps: pre-processing the acquired human brain magnetic resonance images of the brain disease patients to obtain the gray matter density map of the human brain; using a pre-constructed brain disease classification model to classify the gray matter density map to obtain a brain disease category of the brain disease patient, wherein The pre-constructed brain disease classification model is a three-dimensional convolutional neural network model basedon the self-attention mechanism. The system shown in the embodiment of the invention can quickly and accurately classify the categories of brain diseases.

The invention discloses a recurrent neural network (RNN)-based social network message bust detection method and system, and relates to the technical field of popularity prediction of contents in social networks. The method comprises the following steps: acquiring history messages published and forwarded by a user in a social network, and preprocessing the history messages to obtain a history forwarding time sequence; carrying recurrent neural network training on the history messages and the history forwarding time sequence, and generating a prediction model; and acquiring messages published and forwarded by the user in real time, generating a forwarding time sequence according to the messages, inputting the forwarding time sequence into the prediction model to generate feature expressions, inputting the feature expressions into a fully-connected neural network to carry out classification, and outputting the classification result in a softmax manner so as to complete the social network message burst detection.

The invention relates to potassium feldspar decomposition and comprehensive utilization technology and in particular relates to a process for decomposing potassium feldspar by adopting a low-temperature semidry method for comprehensive utilization. The process comprises the steps of fully mixing potassium feldspar, fluorite and sulfuric acid, then adding the mixture to a converter reactor to react at 180-250 DEG C, separating SiF4 and HF generated through a reaction from a system under the condition of negative pressure, carrying out absorption with ethanol and water solution to prepare white carbon black, recovering fluorine resources in the process from the solution in the forms of ammonium fluoride and other aids by adopting the method of adding ammonia water and applying the recovered fluorine sources to decomposition of potassium feldspar and carrying out a series of processes such as extraction on the solids after a reaction to obtain calcium sulfate whisker, potassium fluosilicate, aluminium hydroxide and ferric sulfate products. Compared with the method for decomposing potassium feldspar by a high temperature method, the process has the advantages that the reaction conditions are mild and the requirements for equipment are lower; the white carbon black is directly prepared through gas hydrolysis, thus avoiding the tedious course from solid phase separation; and the fluorine resources introduced to the decomposition course are recycled by adopting the mode of ammonium fluoride, thus avoiding waste of the fluorine resources.

The invention discloses a 3D face cartoon animation method based on region segmentation and subsection learning. The invention has the following steps of: first obtaining sparse 3D movement capturing data and 3D face surface mesh; next calibrating the control point corresponding to the movement capturing data on the 3D face gridding; separating the rigidity and non-rigidity movement in the movement capturing data, and aligning the movement capturing data and the face model in static state; clustering the acmes of the face model based on the cosine distance of the displacement vector of the movement capturing data and the manifold distance of the 3D face gridding acmes; training the segmented surface patch to be subsection radial basis function; and fusing the border movement via the advanced Voronoi-Cell arithmetic. The invention can execute the automatic regional segmentation to a single face model, and model the face non-rigidity movement via subsection radial basis function to form the face cartoon with the third dimension.

The invention discloses an online upgrading method for a DSP chip. According to the upgrading method, the DSP chip of each node is subjected to online program upgrading through a CAN communication bus; and the DSP chip is a DSP chip of TMS320F2833x series. The DSP chip of each node is subjected to the online program upgrading through the CAN bus, so that the efficiency and speed of performing online upgrading and program replacement on a target board are greatly improved, and a complex program writing process and inconvenience caused by embedded box packaging are avoided.

The invention discloses an effective correlated theme model data process method and a system, wherein the method comprises: in task initiation phase, firstly offering an initiation model M0 through a master control node and synchronizing the model to all computation nodes and then dividing task set and distributing the set onto a plurality of computation nodes for computation; in task execution phase, processing a plurality of data, wherein in each turn, firstly processing local parallel computation on working thread of each computation node to obtain theme distribution and model statistics of the node file sub set, and then sending the theme distribution and model statistics to a master control node for collection and judging whether the data process results converge or not. The system of the invention comprises a master control node and a plurality of computation nodes, which form a cluster computer system for computation. The invention can greatly improve computation speed and expand computation aims.

The invention relates to a preparation method of a titanium dioxide/graphene composite photocatalyst. The invention is to solve the technical problems that titanium dioxide in a titanium dioxide/graphene compound prepared by the traditional method has a large particle size and low photocatalytic efficiency. The preparation method comprises the following steps that: tetrabutyl titanate is added to a graphene oxide dispersion solution, a concentrated acid is added to adjust the acidity after ultrasonic dispersion, and then deionized water is added to continue to carry out ultrasonic treatment to obtain sol; and then the sol is transferred to a hydrothermal reaction kettle to be subjected to hydrothermal reaction, and then is washed and dried to obtain the titanium dioxide/graphene composite photocatalyst. The particle size of the titanium dioxide in the composite photocatalyst provided by the invention is 5 to 10nm, and the composite photocatalyst can be used for visible light catalytic degradation of methyl orange, and the catalytic efficiency can reach 75% within 2 hours. The titanium dioxide/graphene composite material provided by the invention can be used as a photocatalytic material, a solar cell material and a lithium ion battery cathode material.

The invention discloses a dynamically and smoothly expandable data acquisition system and method. The dynamically and smoothly expandable data acquisition system comprises a central data acquisition system and a data acquisition terminal, wherein the central data acquisition system comprises a gateway routing node, a data acquisition man aging node, data acquisition nodes, a security authenticating node, an acquired data storing node, a monitoring node, a time synchronizing service node, a security certificate storing node, a log managing node and a log storing node; the central data acquisition system communicates with the data acquisition terminal through a communication network; the data acquisition terminal transmits acquired device data to the data acquisition node, submits a data acquisition application form to the gateway routing node, acquires a node routing information form according to data fed back by the gateway routing node, and initiates a business report block transmission request to each data acquisition node for encrypted transmission of the data. According to the invention, the problems that the existing data acquisition system is high in expansion cost, poor in expansion capability and high in security risk under new application requirements are solved.

The invention discloses a land parcel spatio-temporal data storage method based on a dynamic correcting extension model of a ground state. The method comprises the following steps: based on the dynamic correcting extension model of the ground state, creating a present situation library, a process library and a history library, using a change tool to change a geographic space entity, simultaneously creating a temporal core associated index record change relation, and submitting changed data to the libraries; when the data in the history library exceed a maximum effective query threshold value, according to the best query value, creating variable granularity index factors and quick indexes of a ground state correcting zone; and according to the indexes, carrying out history recall, history recovery and regional history reproduction, and finally finishing land parcel spatio-temporal data storage. The method can accurately record the processes of land parcel history evolution, and can effectively manage the history time of spatial data, avoid complexity and fussiness of data record during land parcel change, improve the retrieval efficiency, ensure the requirement of quickly recalling land parcel data information at arbitrary historic moment, and ensure the requirement that the data at the same moment do not produce ambiguity.

The invention relates to a determining method and measuring device for particle accumulation emanation medium radon migration physical parameters. The method and the device may simultaneously determine the radon diffusion coefficient, the migration radon production rate, the medium permeability and the porosity of such medium. Measurement is performed by an experimental apparatus to determine the medium bottom hole radon concentration and the radon concentration of surface ambient air under the condition of pure diffusion equilibrium, the radon concentration value of the circulating gas and the gas pressure gradient of the medium at different times of two closed recirculation volumes. Then, the porosity [epsilon] of the porous medium, migration radon [alpha] generated by unit volume porous medium, the permeability k of the porous medium, and a diffusion coefficient D are used. The method may simultaneously determine multiple physical parameters. The device is simple in structure, low in manufacture and repair cost, and easy to operate.

The invention discloses a modeling and compensation method of a thermal error of a numerical control machine tool. The method includes the first step of searching heat points of the machine tool by means of an infrared imager, finding an area with a highest temperature in each heat area by means of heat infrared images of all portions of the machine tool displayed by the infrared imager, and arranging a temperature sensor at a position with the highest temperature in each heat area; the second step of taking heat source temperatures measured through tests as input signals and hot deformation of the machine tool as an output signal, and obtaining system pulse response models in the method of deconvolution; and the third step of sequentially inputting temperature change sequences and the corresponding machine tool pulse response models in compensation and carrying out the deconvolution to obtain a heat error predicted value of the machine tool. According to the modeling and compensation method, searching for best temperature measurement points is simple and quick; by the method of the deconvolution, the modeling precision is high; by means of the pulse response models, transportability is good; and the response speed is high, and real-time performance requirements for compensation of the machine tool can be completely met.

The invention provides a duplicate video identification method and device and a terminal. The method comprises the following steps: extracting a key frame of a video to be identified; extracting a visual feature vector according to a key frame of the video to be recognized, wherein the visual feature vector comprises a plurality of visual eigenvalues; obtaining a key frame of a stored video corresponding to a visual eigenvalue from a key frame image retrieval database; calculating a video similarity between the video to be identified and the stored video according to the key frame of the videoto be identified and the key frame of the stored video; judging whether the video to be identified and the stored video are duplicate video according to the video similarity. The method avoids the tedious process of calculating the similarity of key frame sequences in pairs for a large number of videos, improves the time efficiency of video repetition detection, and improves the recall rate and accuracy of video repetition detection.

The invention provides a method for managing an Android Launcher desktop. The method includes the following steps that firstly, after a Launcher is started, information of each page is obtained from a Launcher database; secondly, a corresponding menu option is selected from a Launcher interface and a desktop management interface is entered; thirdly, corresponding thumbnails are established for the pages and arranged in multiple thumbnail pages in a grid mode, the Launcher page displayed before the desktop management interface is entered corresponds to the thumbnail page of the corresponding thumbnail and a preset thumbnail buffering range, the page buffering page number range is divided, and the thumbnails of all the pages within the buffering page number range are loaded; fourthly, operations of blank page new establishment, ranking, desktop sharing, page combination and batch deletion are conducted. According to the method, page combination can be achieved in the desktop management interface, the functions of the interface are shared through a key, blank pages can be established in any position and can be deleted in batches, operation is simple, and the method is easy to implement.

The invention belongs to the pipe support field and specifically discloses a pipe single-arm sliding/guiding support component, which includes a pipe clip to clip the pipe and a single-arm structural beam; one end of the single-arm structural beam is fixedly connected with a single-rail sliding limit component so that the single-arm structural beam can be fixed on a post, a wall or a floor, etc.; the pipe clip is connected with the other end of the single-arm structural beam by a pipe connecting component to realize the sliding/guiding limitation required by the pipe. The support component provided by the invention occupies smaller area, and is convenient to arrange, and is not limited by the distance from the pipe to the support root, which reduces the unfavorable influence on the pipe caused by the friction between the support component and the unfavorable influence on the heat insulation of the pipe caused by the support.

The invention relates to an auxiliary fault detection system and a method which are applied in a production information system for assisting the fault detection operation of a circuit board, the auxiliary fault detection system comprises a detection module for detecting identifying information of the circuit board, detecting the circuit board in the fault detection operation and sending corresponding fault code information and fault position information, a database for storing the fault code information and the corresponding fault position information detected in the fault detection operation and storing the identifying information of the circuit board, an extraction module for extracting the fault code information corresponding to the circuit board from the production information system according to the detected identifying information, an inquiry module for extracting the corresponding fault position information from the database according to the fault code information, and a calculation module for calculating the respective proportion of each fault position contained in the fault position information according to the fault position information for reference.

The invention relates to a gas analysis system and belongs to the nitrogen oxide analysis field. The system detects the concentration of nitric oxide in the atmosphere by using the power of light generated in the gaseous phase reaction between O3 and nitric oxide (NO) gas. The method is called as a chemiluminescence method. The system is used to measure the concentration of NO, NO2 and the concentration NOX in the atmosphere continuously, reacts rapidly when the concentrations of NO, NO2 and NOX change and can measures stably for a long time; the system can be applied in many conditions of different temperatures and humidity without any impact on the measurement precision. All operation control can be accomplished on an operation panel. The concentration of gas is displayed on the LCD display screen on the operation panel. In addition to the display screen on the operation panel, terminals are also provided to provide measurement output signals. A filter and a sampling instrument are arranged at accessible positions and the whole system is reliable in design and convenient to maintain.

The invention belongs to the technical field of PCR (polymerase chain reaction), and particularly relates to a digital PCR chip with silicon substrate arrays and micro-reaction pools and a method for manufacturing the digital PCR chip. The digital PCR chip mainly comprises an upper cover and a chip. Micro-pores which are arrayed to form honeycombs are formed in the chip, and the upper cover is fixed onto a chip groove. The method includes particular steps of selecting a silicon chip with a single polished surface; cleaning the silicon chip; coating a layer of uniform photoresist on the polished surface of the silicon chip in a spinning manner; forming circular graphic arrays by means of exposure; etching silicon by the aid of a dry process in masks, namely, the circular graphic arrays to form micro-pore structures; removing the photoresist and scribing the chip to completely manufacture the digital PCR chip.