45results about How to "Guaranteed recoverability" patented technology

The invention discloses a switch clock synchronization controller and a control method for a time-triggered network. The switch clock synchronization controller comprises a curing module used for restoring a PCF frame sending sequence, a compression module used for calculating an SM clock deviation average value, an optimal compression point selection module, a local clock module used for correcting a local clock and generating a new PCF frame, a cluster detection module used for detecting a network state and a state machine control module used for coordinating the work of the modules. The curing module imports a transparent clock for identifying the transmission delay and a maximum transmission delay for restoring the sending sequence and moments of the PCF frames for solving the problem of lagged clock synchronization; the compression module adopts a hardware mode to realize a three-level streamline dynamic compression algorithm for improving the calculation precision and efficiency of clock synchronization; and a compression point having the largest member number and closest to a receiving window end moment is used as the optimal compression point to ensure that all nodes in a synchronization state in the network can be detected.

The method includes following steps: after receiving request for changing cross connections, configuration controller calculates request so as to obtain new CLOS matrix; configuration controller issues new CLOS matrix to group of cross node; waiting for ready signal returned from all cross nodes in group of cross node; after ready for preparing switching, each cross node returns ready signal to configuration controller; after all ready signals are returned, configuration controller sends out synchronous switching signal to inform each cross node to carry out switching operation for the cross matrix; after receiving 'synchronous switching signal' from configuration controller, each synchronous node switches to new matrix instantly. Configuration controller is composed of communication circuit, control line and state line.

The invention discloses a method for realizing two paths of voice communication based on a webpage. The method comprises the following steps: a streaming media server authenticates the rights of received audio information commands sent by two communication parties; and after the authentication is passed, the two communication parties upload audio streams to the streaming media server respectively and communicate with each other through two paths established through the two communication parties. The invention also discloses a system for realizing two paths of voice communication based on a webpage. By adopting the method and the system, two paths of safe voice communication can be realized without downloading any software.

The invention relates to the technical field of information security, provides a data transmission method and system based on visible light and a storage medium, and is used for solving the technical problem that high-security transmission of data between networks with different security levels cannot be realized in an absolute physical unidirectional isolation network environment in the prior art. The method comprises the following steps: performing encryption and forward error correction code processing on an access request received in a first security level network to obtain a forward error correction code corresponding to the access request; transmitting the forward error correction code to one end connected with the second security level network through one-way visible light, and restoring effective information in the access request from the forward error correction code; and initiating access to the second security level network according to the effective information.

First, the method backs up data of device terminal to device management (DM) server. The said data includes individualization data of software program and device terminal. When data of device terminal are lost or in error, the method can restore the backed data to terminal. When software program at terminal is in error, the method can down load the backed software, as well as installs and configures software in order to recover data and software of device terminal. Storing terminal data in DM server, the invention guarantees recoverability of device terminal data especially private data.

The invention provides an operation intercept based repentance method of a distributed critical task system, comprising the following steps of: firstly carrying out redundancy backup on important files of the system to ensure the recoverability of data information; secondly intercepting the operation information of the system by an operation intercepter in real time and writing into an operation log; and analyzing captured operation records by an operation analyzer and writing unrecoverable operation or operation which does not need to be recovered into redundant files by an operation storageand processing the operation which needs to be recovered by a repenter. When the system is faulty, the repenter carries out repentance recovery on the system through three continuous steps of operation rollback, operation restoration, operation resetting and solves the problem of inconsistency possibly generated in the repenting process through a consistency manager according to a graded compensation strategy.

The invention relates to a method for storing and accessing file sets under a tree directory structure in a database, which can effectively solve the problems of overall storage and random access when file sets are stored in and extracted from a database system. The technical scheme is as follows: the overall storage extracts the directory structure, file data and attributes of the file sets froma file system to a local memory; organization structure object is serialized; data blocks are stored in the database; the random access recovers the directory structure of the file sets; corresponding files in the database are accessed according to user selection to read out the directory structure data blocks stored in the database; the directory structure data blocks are recovered to data structure objects by reverse serialization; and the information of the directory structure objects are shown to users in the forms of visible file node data structure, directory node data structure and file set directory structure objects. The invention solves the difficult technical problem that files are not supported to be directly stored and randomly accessed in the database in the prior art, thereby having enormous economic and social benefits.

The embodiment of the invention discloses a distributed data dynamic storage method based on a block chain and electronic equipment. A specific embodiment of the method comprises the steps of obtaining to-be-stored target data and target metadata; generating a target data block set based on the target data; storing the target data block set in a storage node group; determining a storage relationship set based on the target metadata and the target data block set; storing the storage relationship set in at least one metadata management node; updating the block chain. According to the method, a target data block set is generated after a target data block to be stored is segmented and copied. The multi-copy target data block set ensures the security and restorability of the distributed storagedata. And the target data block set is stored in the storage node group, and the storage node with the highest current comprehensive performance index is dynamically selected for storage according tothe comprehensive performance index of each storage node in the storage node group, so that the storage efficiency and performance are improved.

The invention discloses a distributed cloud storage system based on an intelligent contract, which belongs to the technical field of information security. The method of the present invention includes six modules including initialization, generating blocks, signing, storing, deploying contracts and auditing. Compared with the existing cloud storage solution, the present invention can prevent single-point storage failure; can guarantee the confidentiality, availability and user control of outsourced data at a lower cost; can guarantee the anonymity of the identity of the data owner and lessor ; It can ensure that after the lessor stores the outsourced data according to the contract, the data owner cannot deny the storage service enjoyed, and it can also ensure that the mortgaged assets are automatically transferred to the lessor's account after each integrity audit.

The invention relates to the field of truffle artificial cultivation, and discloses a truffle lagoon recovery and tree inoculation method. The method comprises the steps of selecting mature truffle, cleaning mature truffle and pulping the truffle into juice, adding purified water into the truffle juice, manufacturing the juice into a juice suitable for being sprayed, adopting a manual sprayer forspraying the truffle juice to a lagoon needing to be recovered and a region suitable for inoculation, performing timely earthing on the place obtained after the truffle juice is sprayed, insolation isavoided, the phenomenon that the concentration is diluted by rainwater is avoided, and the operation region is observed and detected periodically. The truffle lagoon obtained after picking is completed or cultivation fails can be recovered, growth picking and cultivation recovery of the truffle lagoon are ensured, meanwhile, the recovery means can be used for truffle cultivation and planting, andthe wide application is achieved in the field of artificial truffle cultivation and planting.

An embodiment of the invention discloses a method for managing private key of user digital certificate, wherein the method comprises the following steps: generating the key pair of ciphered certificate; ciphering the private key in the key pair of ciphered certificate by the ciphering card with the common key in the preset key pair for obtaining digital envelop; authorizing the enciphered certificate by CA, and providing the enciphered certificate and digital envelop to the USB Key of user end; and deciphering the digital envelope according to the private key in the preset key pair for obtaining the private key of ciphered certificate. The embodiment of the invention simultaneously discloses a system for realizing the method. The embodiment of the invention ensures the security of privatekey of ciphered key in the transmission process. The embodiment of the invention also use KMC common key and KMC administrator common key for enciphering and backing up the private key of ciphered certificate, furthermore backs up the KMC private key and KMC administrator private key, and ensures the backup security and recoverability of private key of enciphered certificate.

The invention discloses a data backup method, system, device and storage medium under a private cloud architecture. The method includes the following steps: backing up the data of the management node every predetermined time, and backing up the data with the same name in chronological order Cyclic coverage; in response to the completion of the backup, start the backup receiving service; transfer the backup data to the local disk based on the backup receiving service, and transfer the backup data to the first and last reachable nodes in the private cloud based on the IP rule; and respond to When the management node fails, it sends data recovery requests to the local disk, the first and last reachable nodes, and receives backup data. The method, system, equipment and medium for data backup under the private cloud architecture proposed by the present invention transmit the backup data to the local, first and last reachable nodes respectively in the private cloud architecture to ensure data security to the greatest extent .

The invention discloses a data transmission method and device based on alliance chain, the method includes: dividing data into several data blocks, using different symmetric keys to encrypt data blocks correspondingly, generating and numbering ciphertexts of several data blocks and uploading them to the blocks chain; use the public key of the first node to encrypt the symmetric key, generate the first key ciphertext and upload it to the blockchain; use the private key of the first node to decrypt the numbered ciphertext from the blockchain, and obtain The number of the ciphertext of the data block to be queried by the second node; when the second node is allowed to query, use the public key of the second node to encrypt the corresponding symmetric key, generate the second key ciphertext, and pass the block chain Send to the second node, so that the second node uses its own private key to decrypt the second key ciphertext to obtain the corresponding symmetric key. The invention ensures the safety, controllability and recoverability of data, and simultaneously improves the efficiency of encryption and decryption.

The invention relates to IP (Internet Protocol) centralized dictation system and method. The IP centralized dictation system comprises an MGCP (Media Gateway Control Protocol) dictation module, a dictation management module, an information transmitting module, a dispatch terminal communication module and a magnetic disc management module, wherein the dictation management module comprises a dictation submodule, an information processing submodule, an audio alarm submodule, a dual-computer hot standby submodule and an interface management submodule. The IP centralized dictation method comprisesthe following steps of: starting a main program; acquiring operating parameters of the IP centralized dictation system, which include channel relevant parameters, magnetic disc pack information, and the like; acquiring an IP address and a port number of an information transmitting server, and connecting; dispatching an MGCP dictation library, and initializing the MGCP dictation library; dispatching a magnetic disc management library to carry out the automatic management of the magnetic disc; dispatching the dispatch terminal communication module to carry out communication by connecting with adispatch terminal; and judging whether a dual-computer hot standby working mode is adopted or not. The IP centralized dictation system which realizes the dictation of an analog telephone registered to a dispatcher, a digital telephone and an MGCP telephone has the advantages of simple installation, good tone quality, convenient inquiry and flexible playing.

The invention discloses a positioning device and a construction method for a composite supporting structure, comprising a water-stop curtain located around the bottom of a foundation pit, a core pile connected in the water-stop curtain, and a hoisting assembly connected to the core pile; The bottom end of the core pile is higher than the bottom end of the water-stop curtain, and an anchor cable is also connected between the core pile and the surrounding soil; the water-stop curtain is located at the toe of the slope protection slope, and its inner side is close to the edge line of the toe of the slope. Through the three-dimensional modeling in the early stage, the invention is conducive to deepening and controlling the construction of the composite supporting structure and the positioning components, and the positioning components can effectively ensure the positioning of the core piles in the later stage; by inserting the core piles in the stirring piles, it is beneficial to strengthen the water-stop curtain, In addition, the length of the core pile is less than the height of the water-stop curtain, which saves the construction cost while ensuring the strength. The slope protection is used to connect the positioning components for the bearing system, and combined with the setting of the pile positioning frame and its connected sliding components, it is possible to carry out the construction of small sites. The hoisting positioning on the upper part further ensures the convenience and accuracy of construction.

The invention discloses a file system implementation method and device, and the method comprises the steps that a first section of flash hardware equipment stores a first super block, a last section stores a second super block, the rest sections form M file storage spaces, each file storage space comprises a main file and a backup file, the first super block stores the file list information of the main file, the second super block stores the file list information of the backup file, and the first super block stores the file list information of the backup file; the second super block stores file list information of backup files; when a file is written, writing of a main file and writing of a backup file are carried out in sequence for each file storage space; during file updating, copying and writing from the main file in each file storage space, and updating the backup file after the writing of the main file is completed; and synchronizing file list information in the first super block and the second super block. The whole file management speed and reliability can be improved, and the recoverability of the written file is ensured.

The embodiment of the invention discloses a data downgrade storage method and device, belonging to the technical field of data storage. The method includes: obtaining the data to be stored, detecting whether there is an online stripe, and if there is no online stripe, assigning an offline stripe to the data; if the number of online blocks in the offline stripe is greater than the preset number in each stripe If the number of verification blocks is increased by 1, the data blocks and verification blocks will be redistributed in the online blocks of the offline stripes, where the number of verification blocks is the preset verification points in each stripe. Number of blocks; store data in offline stripes. It solves the problem that the RAID in the degraded state in the prior art will only continue to disperse and store the subsequently stored data, and no longer calculate and store the verification data. Once a data block fails to read and write, all data stored on the disk will The problem of data loss and irrecoverability achieves the effect of ensuring the recoverability of the data stored in the degraded RAID.