937results about How to "Achieve recovery" patented technology

The invention discloses a method and a system for realizing block chain private key protection based on key segmentation, and aims to solve a technical problem that a private key of a block chain is lack of security and cannot be retrieved. The method for realizing block chain private key protection based on key segmentation comprises that hard encryption for a block chain private key supporting mobile phone equipment certificate authentication and password authentication is realized by taking a mobile phone as a terminal carrier and using a cipher machine and an authentication server of the cloud; and the block chain private key is segmented by using a threshold algorithm, and multi-party participating key backup and key recovery/retrieval is realized. The method comprises (1) a registration procedure, (2) a private key utilization procedure, (3) a private key backup procedure, and (4) a private key recovery/retrieval procedure. The system structurally comprises a cipher machine and an authentication server of the cloud and a mobile phone acting as the terminal carrier. The method and the system disclosed by the invention can realize safe storage, safe utilization, multi-party participating backup and multi-party participating retrieval of the block chain private key.

The invention relates to the field of occupation of the mass data memory space and backup and recovery of historical data, and in particular provides a data recovery and synchronization method based on log snapshots. The data recovery and synchronization method based on the log snapshots adopts log files with given format to record changed information of data of databases each time; the changed information is formatted, positioned and stored into the log files; an analytic program calls an approximate algorithm to acquire effective data on set time points by means of multithreading; the data is temporarily stored into a temporary table, and abstract data snapshots are generated according to the temporary table; and data recovery and synchronization is realized by utilization of the snapshots. The data recovery and synchronization method based on the log snapshots can greatly reduce the burden of a database system, obviously improve the efficiency of the database system and an application system, save a great deal of memory space, and reduce the operation cost of the systems.

The embodiment of the invention discloses an image processing method and device, electronic equipment and a storage medium. The method comprises the steps that an image frame sequence is acquired, theimage frame sequence comprises to-be-processed image frames and one or more image frames adjacent to the to-be-processed image frames, the to-be-processed image frames and the image frames in the image frame sequence are subjected to image alignment, and multiple pieces of alignment feature data are obtained; a plurality of similarity features between a plurality of alignment feature data and alignment feature data corresponding to the to-be-processed image frame are determined based on the plurality of alignment feature data, and weight information of each alignment feature data in the plurality of alignment feature data is determined based on the plurality of similarity features; and according to the weight information of each alignment feature data, the plurality of alignment feature data is fused to obtain fusion information of the image frame sequence for obtaining the processed image frame corresponding to the to-be-processed image frame, thereby improving the quality of multi-frame alignment and fusion in image processing, and enhancing the display effect of image processing.

The invention discloses a block chain secret key recovering method based on a multi-party security computing technology, and a medium, for preventing the permission of a core node from being overlarge, allowing the backup and recovery of a private key to be safer, and thus protecting user rights. The technical scheme is as follows: the mandate and recovery of the block chain secret key are performed by using the multi-party security computing technology. A governmental agency with legal validity can be introduced to be networked with a third-party agent for verifying identity validity of the user, so as to effectively verify and endorse the user identity. On the basis of effective endorsing, the user and the secret key management service provider perform security cooperative computing on the private key, so that the private key of the user is backed up and recovered in an encrypted manner. According to the method provided by the invention, the user identity management can be achieved,the permission of the privilege node is minimized, and the user identity is effectively verified through introducing the third-party agent, and thus the requirement of secrete key mandate of the nodeuser is met.

The invention discloses a chronic disease health management system and method. The system comprises a health monitoring and acquisition apparatus, an information acquisition and processing module, a management module, a terminal device and a real-time tracking and monitoring module, wherein the health monitoring and acquisition apparatus acquires health information of a chronic disease patient and generates health data; the information acquisition and processing module processes, analyzes and assesses the acquired health data and generates analysis and assessment result data of the chronic disease patient; a management scheme is generated through the management module and sent to the terminal device so as to perform intervention management on the chronic disease patient; and the real-time tracking and monitoring module tracks and monitors the health information of the chronic disease patient in real time, evaluates an intervention management feedback effect and continuously adjusts and perfects the management scheme. According to the system and method, effective management can be carried out for dangerous factors of chronic disease crowds and professionalized and personalized 8S health management schemes can be provided for chronic disease patients.

The invention discloses a mixed format signal optical fiber transmission device. The mixed format signal optical fiber transmission device comprises a sending end, a fiber channel and a receiving end, wherein the sending end converts input camera link format video image signals and multi-channel universal serial signals into optical signals, the optical signals are sent to the receiving end through the fiber channel, and the receiving end receives the optical signals and restores the optical signals to original video image signals and multi-channel universal serial data signals. The mixed format signal optical fiber transmission device is suitable for optical fiber transmission of the camera link video image signals and the multi-channel universal serial signals in all configuration modes, the transmission of mixed format signals in a single-fiber channel at different rates can be achieved through multiplexing of a transmission bus, and consumption of extra fiber channels and devices is reduced. According to the mixed format signal optical fiber transmission device, electrical signal conversion processing and transmission control are achieved through a field programmable gate array (FPGA) device, the requirement for actual functions is met, meanwhile, the usage of application-specific integrated circuits is reduced, the advantage of high integration and universalization degrees can be achieved, and supports can be provided for further function extension and performance upgrading.

The invention relates to a network-based system for analyzing opinion information in a discrete text, belonging to the field of network information safety. The system comprises the following modules: a discrete text information acquisition module which acquires network information in a preset analysis cycle, a discrete text information tracking and restoring module which restores ellipsis and remote anaphora in the original content to obtain a text which contains a relatively complete text structure and semantic information, a semantic information mining and characteristic extracting module which realizes semantic information mining and characteristic extracting on text information by utilizing a latent semantic indexing technology, an opinion information clustering module which realizes information clustering by combining a niche genetic algorithm with a K-Means method, a hot opinion event discovery module which mines the hot opinion in the obtained topic and event, and a background information processing and data supporting center which analyzes data and provides a repertoire specially for a network, new words in the network, the existing class information and the existing hot topics. By applying the invention, the problem that information analysis is influenced as the text structure of the existing network opinion information is incomplete, ellipsis and remote anaphora are more and the new works in the network are more is solved, and the accuracy for discovery of the opinion and hot event is improved by adopting a high-efficiency clustering method.

The invention discloses a protection method for loop network with at least two nodes. Wherein, every node links on loop by the first and second loop ports; all loop ports interconnect on link layer and connect at least one other port of all nodes on network layer. This method comprises: setting the link layer transmission of loop port as broadcast means; when there is fault on loop network, two normal-working nodes near fault point turn the loop port connected to fault point to another loop port. This invention needs not to update transmission list and fault notice for fault recovery, has no primary and auxiliary nodes and ports as well as clogging port, and realizes the fast recovery and switch less than 50ms.

The invention discloses a microfluidic chip based on pneumatic micro pumps and a micro mixer. The microfluidic chip adopts a three-layer structure, a bottom layer is a glass substrate, and a gas drive layer and a liquid flow layer which are made of elastic materials are successively arranged on the substrate; the liquid flow layer comprises a micro mixing chamber, a plurality of micro liquid storage tanks and fluid channels, one end of each fluid channel is connected to the corresponding micro liquid storage tank, and the other end of each fluid channel is connected to the micro mixing chamber; the gas drive layer comprises the micro mixer, a plurality of pneumatic micro pumps and gas channels; externally-added pulse gas pressure is orderly controlled to enter the gas drive layer by an electromagnetic exhaust valve, the pneumatic micro pumps made of the elastic materials and the micro mixer are allowed to work, multiple channels of different solutions are orderly injected into the micro mixing chamber for mixing, so as to realize a purposeful trace chemical reaction. The microfluidic chip can be used for rapid, convenient and accurate realization of automated liquid transport and efficient mixing of a trace liquid, and has important practical significance.

The invention relates to a method for managing device setting information, wherein said method comprises that: presetting setting mark of setting information type, when user uses client to manage the device setting information, the client obtains setting mark and operation mark, and one or more marks of manage targets to be sent to server; the server operates setting information relative to the manage target and setting mark. The invention can manage and maintain the setting information of one or more devices, to improve working efficiency.

The invention discloses an imaging method and an imaging system of dynamic optical fields of multichannel space-time coding apertures, which comprise the steps of establishing a five-dimensional dynamic optical field module of space-time coding, introducing exposure time regarded as a time dimension into coding apertures based on a four-dimensional optical filed, and achieving space-time joint coding of a aperture mode and orthogonal space-time coding apertures based on multiplexing; estimating motion fields, eliminating motion blur, and achieving recovery of motion blur images based on exposure time coding; reestablishing multichannel depth super resolution; and achieving decoupling of motion fields and depth fields and recovering full focus images. Through multiplexing, signal to noise ratio of images and influence of shutter noise are reduced, and optical filed imaging quality is improved. Frequency response characteristics of the exposure time decoding and recovery of the motion blur images can improve definition of images after being recovered, and reestablishment of the depth super resolution improves depth resolution and modifies estimation errors of depth images with low resolution.

The invention discloses a method for storing transmission line integrated data based on HBase. The method comprises the steps of collecting the transmission line integrated data, wherein the transmission line integrated data comprise structural data and unstructured data; classifying the transmission line integrated data; building an Hbase table according to the classifying result; converting the transmission line integrated data in the Hbase table as byte arrays; sequentially storing the byte arrays into an HBase distributed database according to the format of the Hbase table, wherein the HBase distributed database is built on an HDFS (Hadoop Distributed File System). By adopting the method, the transmission line integrated data can be integrated with the HDFS and HBase; the problems that the original data are poor in information sharing, the information is in isolated island, and the unstructured data are difficult to process can be solved.

The invention discloses an embedding method and an extracting method of reversible watermarks, belonging to the technical field of digital watermarks. The embedding method comprises the following steps of: sequentially reading the pixel values of digital images, and establishing a position sign sequence; compressing the position sign sequence, and regulating a pixel with the pixel value of 0 or 255; calculating forecast error sequences of the digital images, and selecting internal areas and parameters T which are needed in the embedding process; and embedding the reversible watermarks according to the selected parameters. The extracting method comprises the following steps of: sequentially reading the pixel values of the digital images, and extracting various kinds of auxiliary information; uncompressing the compressed position sign sequence to obtain the uncompressed position sign sequence; carrying out inverse solution referring to the embedding parameters so as to obtain embedding information; regulating the pixel values according to the position sign sequence; and finally, sequentially substituting the sequences for least significant bits of the pixel values, wherein carrier images can be completely recovered at the time. The invention can successfully realize the embedding and the extraction of the reversible watermarks on gray level images and the recovery of original images.

The invention discloses a data flashback method and apparatus for a database, and relates to the technical field of the database. The method comprises the steps of receiving a data recovery request, wherein the data recovery request comprises first time corresponding to a misoperation of the database; obtaining an operation record log of a misoperation part corresponding to the first time from operation record logs of the database, wherein the operation record log records non-inquiring operations on the database based on formats; analyzing operations in each line corresponding to the misoperation from the operation record log; and performing reverse operation corresponding to the misoperation on the database from the last line of the operations corresponding to the misoperation. The data flashback method and apparatus achieve the beneficial effects of relatively short use time, high recovery efficiency, and capability of effectively reducing influence on database visit by a user caused by relatively long recovery time.

The invention discloses a Gaussian blur image restoration method based on a generated antagonistic network, comprising two steps of training and learning the generated antagonistic network parametersand applying the generated antagonistic network to the Gaussian blur image restoration, and realizing end-to-end image restoration; generating countermeasure network consists of generator and discriminator. Generator and discriminator are mainly composed of convolution network layer. The training process of the network is: according to the constructed Gaussian fuzzy kernel set, the clear image isblurred, and the training set of clear image and blurred image data pairs is obtained, which is used to train and generate the antagonistic network. Given a single Gaussian blurred image, input the trained model, we can restore the clear image. By using the generated antagonistic network and learning and fitting ability of the convolution neural network, the invention can be further used for constructing a Gaussian blurred image restoration system to obtain a very good Gaussian blurred image restoration effect, and has important practical value in practice.

The invention discloses a communication receiver anti-interference method on the basis of blind signal separation and a system thereof, wherein the method comprises: utilizing a positive-negative 45 degree dual polarization antenna module to receive signals, changing a two way high frequency signal into an intermediate frequency analog signal, outputting an intermediate frequency digital signal by the intermediate frequency analog signal through analogue/digital conversion and after an orthogonal transformation module, then, carrying out digital down conversion, abstracting, filtering, and the like, transforming into a DSP baseband complex signal, obtaining a statistical independent signal after two ways are separated by the complex signal after passing through a linear blind signal separation algorithm module, carrying out self-adaptive equalization processing to a two way estimating signal after blind separation, counteracting crosstalk in a communication channel, utilizing a known modulation and demodulation method to demodulate a two way independent signal, analyzing a two way signal, and abstracting a useful signal. The invention does not need to use any other reference signals, adopts the linear blind signal separation algorithm to estimate the two way independent separation signal, the calculation complexity is low, and the disturbance to the communication receiver under the condition of low signal-to-noise ratio can be eliminated.

The invention discloses a hyperspectral image reconstruction method adopting deep learning. The hyperspectral image reconstruction method comprises steps that 1) a hyperspectral training data set is trained by adopting a sparse coding way to acquire a neural network; 2) space spectrum modulation of an original hyperspectral image of a target scene is carried out to acquire a two-dimensional sensor image; 3) the two-dimension sensor image acquired in the step 2) is reconstructed by using the neural network, and the reconstructed hyperspectral image of the target scene is acquired. The hyperspectral image reconstruction method is advantageous in that a problem of low hyperspectral imaging speed is solved, and the hyperspectral image having higher resolution is acquired.

The invention discloses a system and a method for copying and restoring data in cold-starting mode. The method comprises separating the hard disk into hidden partitions and customer partitions for copying and restoring user data information. The inventive system comprises a pre-setting module for setting a data copy/restore system on the hidden partitions; a starting module for judging computer staring type according to user inputting information after system BIOS starting, and deciding whether to start data copy/restore system according to the judging results; a copy module set in the data copy/restore system for copying data information in customer partition into the hidden partition; and a restore module set in the data copy/restore system for restoring data information in the hidden partition to the customer partition.