578results about How to "Reduce the risk of loss" patented technology

The invention discloses a method for storing a mass of small files on the basis of a master-slave distributed file system, and aims to solve the problem about storing the mass small files in the master-slave distributed file system. The technical scheme includes that the method includes that a mass small file storage system is deployed and initialized, and then small files are created and read by a SmallFileAPI (small file-application program interface) of a client side according to a command received from a keyboard. When the small files are created by a system, the SmallFileAPI creates data files of the small files according to small file paths obtained from the client side, writes in small file data and simultaneously creates small file indexes at data nodes; when the small files are read by the system, data node information corresponding to a parent directory is acquired according to the small file paths, an index request is transmitted to any of the data nodes, and finally the small file data are read from the data files according to index information. By the aid of the method, the problem about mass of storage metadata of the mass of small files is solved, writing efficiency of the mass small file storage system is improved, and reliability of the system is guaranteed.

The invention discloses an active anti-loss system and an anti-loss method for a handheld device, comprising a handheld device and a short-distance wireless communication device for communicating with the handheld device, wherein the handheld device or the short-distance wireless communication device output an alarm when detecting that the signal intensity in between reaches a set threshold value, so that when moving away from the short-distance wireless communication device, the handheld device output an alarm to remind an owner of the loss of the handheld device. The method conducts real time detection of the distance between the handheld device and the short-distance communication device such as a Bluetooth device, an infrared device, etc. and actively outputs an alarm when the distance goes beyond a threshold value to remind the owner to prevent the handheld device from being lost, thereby reducing the risks of losing the handheld device. The active anti-loss method can not only prevent the handheld device from being stolen, but also prevent the handheld device from being stolen due to the carelessness of the owner.

The security receptacle for packages provides protection for delivered packages and parcels. The receptacle is fabricated from a flexible, weather-resistant, cut-resistant material capable of expanding to accommodate variously sized packages. A lockable, zippered top is provided to securely close the receptacle. The bottom of the receptacle is adapted to accommodate a cable lock to secure the container to a stationary object. A facility is provided to store the receptacle when not in use,

The invention provides a disk array reconstruction method. The improved disk array reconstruction method comprises the following steps of: A, counting error counts in disks in a redundant array of independent disks (RAID) system; B, judging whether the error count in one disk of the RAID system exceeds a preset threshold value or not, if so, executing a step C, otherwise returning to the step a; C, setting the disk as a warning disk, activating a preset hot spare disk and replicating existing data in the warning disk into the hot spare disk; and D, after the replication, deleting the warning disk from the RAID system and substituting the hot spare disk for the error disk as the component disk of the RAID system. In the scheme, the risk of data loss in the reconstruction process can be effectively reduced and the reconstruction process is accelerated.

The invention provides a data partition storage method and a system boot method of an embedded system, wherein the data partition storage method comprises the following steps: packaging each partition files including a Bootloader partition file, one or two Image partition files containing kernels and root file systems, and other user data partition files; respectively adding header information to all the partition files except the Bootloader partition file, the header information being used for identifying attributes of a current partition file; and writing each partition files into a FLASH chip in a sector alignment manner. In embodiments according to the invention, a centralized partition table dose not need to be set, not requiring implementation of centralized management, thereby, enabling simple and convenient use and improved safety, avoiding a risk of incapability of positioning each partition after the centralized partition table being damaged; functions of each partition are independent from each other, rendering no effect on each other, thereby, reducing data loss risk; partition data is organized in a compact manner, which enables the system to be more concise.

The invention discloses a video backup method and system based on a security and protection home gateway. The video backup method comprises the following steps that: the home gateway of a network video system periodically sends a link detection report to a server and judges whether a current network state is normal or not according to a link reply report responded by the server; if the current network state is normal, the home gateway uploads current video data of the network video system to the server; and if the current network state is abnormal, the home gateway stores the current video data of the network video system to a local storage space of the home gateway. The video backup method and system provided by the invention solve the problem that a home gateway monitoring video cannot be stored into a long-distance video storage server when the long-distance video storage server or a network is abnormal in the prior art through a local data backup mechanism when the network is abnormal, so that the integrity of video data can be effectively ensured, and the risk of losing the video data can be reduced.

The invention discloses a method and device for writing data into. The method includes obtaining of the data to be written into, a strip matched with the volume of the obtained data to be written into is determined from a disk storage system according to the volume of the obtained data to be written into, wherein the disk storage system includes multiple strips different in depth, each strip includes n data strip units and m verification strip units, the data to be written into is divided into n data strip units, the m verification strip units are calculated out through an erasure code algorithm, and the n data strip units and the m verification strip units are written into the determined strip. According to the volume of the data to be written into, the strip of the suitable depth is selected, the data to be written into is written into the selected strip through the erasure code algorithm, and the effects that the throughput is improved by selecting the strip with the large depth when the volume of the data is large, and when the volume of the data is small, the strip with small depth is selected, so that the risks of delayed writing and data losing are reduced.

The invention relates to the field of data management and discloses a block chain technology-based health detection data management system. The system comprises a plurality of terminal nodes, a plurality of super nodes, at least one user group and a root node server, wherein each terminal node corresponds to a service terminal device for bearing user health detection; the service terminal device is used for generating health detection data and caching the health detection data; the user group includes at least one super node; the root node server is used for converting the terminal nodes to the super nodes according to running time of the terminal nodes and system resource abundance degree, and establishing the user group; and the root node server is also used for synchronizing the health detection data stored between the super nodes in the user group. The invention also discloses a block chain technology-based health detection data management method. According to the block chain technology-based health detection data management system and the block chain technology-based health detection data management method, the safety, completeness and reliability of the user health detection data which are stored in a distributed system for a long time can be effectively guaranteed.

The invention relates to mobile terminals, in particular to a mobile terminal and a combined terminal device formed by splicing the multiple mobile terminals. The mobile terminal comprises a display screen, a first side surface, a second side surface, a first magnetic attraction element and a second magnetic attraction element, the first side surface and the second side surface which are parallel are located on the two reverse sides of the display screen, the first magnetic attraction element is arranged on the first side surface, the second magnetic attraction element is arranged on the second side surface, and when another mobile terminal is spliced with the current mobile terminal, the first magnetic attraction element on the first side surface of the current mobile terminal can be attracted to the second magnetic attraction element on the second side surface of another mobile terminal so that the first side surface of the current mobile terminal can be attached to the second side surface of another mobile terminal in an aligned mode. Due to the first magnetic attraction element and the second magnetic attraction element, the mobile terminal does not need to be specially provided with inserting grooves for splicing, and accordingly the using hand feeling of the mobile terminal is kept.

The invention relates to a system and a method for terminal password login; wherein the method comprises that the following steps: input the account voucher; input the login password of user; verify the login password of the user according to at least two preset passwords with different administrative authorities; assign the authorities to the user. With the method of setting at least two passwords with different administrative authorities in the terminal password login system, the invention has the advantages that the user can acquire the corresponding administrative authority by inputting different passwords according to the actual operating situation; thus the prior risk of losing all the administrative authorities caused by the stealing of the password is reduced and the loss of the user is also reduced.

The invention discloses a safe storage system and method for off-chain data of a block chain. The method comprises the steps of reading current off-chain data, and after preprocessing, generating a data authentication code of the current off-chain data according to a policy for generating data authentication codes, wherein the data authentication code can be used for authenticating all off-chain data; verifying the correctness of written off-chain data and the corresponding data authentication code, and writing the off-chain data which is authenticated successfully into a backup buffer area; according to a set policy for writing data into a main chain of the block chain by the system, writing the processed off-chain data on the backup buffer area into the main chain of the block chain. According to the safe storage system and method for the off-chain data of the block chain, by introducing reliable storage of a third party, the loss problem of the off-chain data is solved; by utilizing the characteristic that the data authentication code of the current off-chain data can be used for authenticating all the off-chain data, the loss risk of the off-chain data can be further reduced, the reliability and security of a block chain branching technique are improved, and meanwhile the authentication speed is increased.

The invention discloses a network information security protection system based on the Internet. The network information security protection system comprises a cloud platform, a registration and loginunit, a database, an information auditing unit, an intrusion detection module, a user management module, an alarm unit and a protection unit. The method comprises the following steps: detecting systemdata through an intrusion detection module, acquiring illegal access times, virus type quantity and vulnerability quantity of a system, acquiring a system intrusion coefficient Y through a formula, and comparing the system intrusion coefficient Y with an intrusion coefficient threshold value: if the system intrusion coefficient Y is less than or equal to the intrusion coefficient threshold value,judging that intrusion does not exist in the system; generating a system security signal and sending the system security signal to the cloud platform; if the system intrusion coefficient Y is greaterthan the intrusion coefficient threshold, judging that intrusion exists in the system, generating a system danger signal and sending the system danger signal to an alarm unit. After the system is detected, viruses are eliminated before data loss of the system, so that the data security is improved, and the risk of data loss is reduced.

The invention discloses a backup and restore method for a DTV receiving terminal software system; wherein after the DTV receiving terminal guides a boot to normally start and load divers, a backup system is selected and entered, the user parameters or DTV receiving terminal software are stored in an external memory storage as backup through a backup system of the DTV receiving terminal; after the DTV receiving terminal guides the boot to normally start and the basic drivers are loaded, the DTV receiving terminal is connected with the external memory storage, a restore system is selected and entered, the loss data or system is restored through the restore system of the DTV receiving terminal. The DTV receiving terminal has backup or restore function, and accordingly reduces the data loss hazard.

The invention discloses a blockchain data sharing encryption and decryption method, equipment and a storage medium, which belong to the technical field of blockchains. The blockchain data sharing encryption and decryption method comprises the steps of: creating a homomorphic proxy re-encryption key pair private key A and public key A1 by at least one first party; encrypting a plaintext a to obtaina ciphertext a1; uploading the ciphertext a1 to a blockchain; creating a homomorphic proxy re-encryption key pair private key B and public key B1 by at least one second party; encrypting a plaintextb to obtain a ciphertext b1; uploading the ciphertext b1 to the blockchain; acquiring a public key C1 from an intelligent contract of the blockchain by the first party and the second party; performingproxy re-encryption on the public key C1 and the private key A to obtain a secret key rekey A by the first party, and uploading the secret key rekey A to the blockchain; and performing proxy re-encryption on the public key C1 and the private key B to obtain a secret key rekey B by the second party, and uploading the secret key rekey B to the blockchain, wherein the intelligent contract creates akey pair private C and public key C1 through homomorphic encryption. The blockchain data sharing encryption and decryption method solves the homomorphic problem of conducting safety calculation basedon private data of the blockchain, reduces the interaction process between users and the blockchain and between the users, moves some operations under the chain to the chain, and makes calculation more credible.

The invention discloses a block chain technology-based distributed power generation quality evaluation method and apparatus. The method comprises the steps of firstly classifying nodes of a distributed power generation system into sub-nodes, partial nodes and complete nodes; and secondly, sending online transaction records and evaluation functions of the sub-nodes to the subordinate partial nodes and all the complete nodes, and performing storage in a block chain mode. Compared with the prior art, the method has the advantages that the distributed power generation evaluation functions and transaction information data of the nodes are sent to the partial nodes and all the complete nodes of a region where the nodes are located; random hashing is performed at the partial nodes and the complete nodes; the distributed power generation related data information is added with time stamps; and block packaging is performed to generate a block chain of the complete nodes and a block chain of the partial nodes. Therefore, the data loss risk can be lowered, the data is ensured not to be tampered, and the cost of a database framework is properly reduced.

The present invention provides a method for location of following target and a following device. An image to be identified is obtained based on vision, image subblocks corresponding to image areas at each position in the image to be identified is subjected to image feature matching through standard image features, an image subblock having image features matching the standard image features is determined, and the relative position information of a following device and a following target is determined according to the position information of the image subblock in the image to be identified. A mode of the relative position information of the location following device of an image to be identified and the following target based on the vision is not easy to be interfered by a surrounding environment, the location precision is high, the following device is ensured to accurately track the following target, the following device does not need real-time observation and maintenance by users, and therefore the problems are avoided that user operation is complex, the time consumption is long and the like, the utilization efficiency of user tripping time is improved, and the risk of loss of a luggage box is greatly reduced.

A method of safeguarding against loss of data stored in a portable data storage device or loss of the data storage device itself is described. A user-carried backup device having memory and a wireless communication link for communicating with the portable data storage device is provided. The backup device and the portable data storage device communicate periodically or quasi-continuously over the wireless communication link and may backup data entered into the portable data storage device and check for removal of the portable data storage device. An alarm is activated to alert a user to loss of the portable data storage device if the portable data storage device is out of range of communication for a predetermined period.

The invention discloses an online packing machine which comprises a content conveying device and a filling box conveying device, wherein a content inlet and a content outlet are formed in the content conveying device; the content outlet is located above the filling box conveying device; the content conveying device is arranged as a power conveying device; the filling box conveying device is arranged as the power conveying device with an adjustable inclined angle; a running control device is arranged on the filling box conveying device; the content conveying device and the filling box conveying device are both arranged as conveyer belt conveying devices; a transition device is arranged at the content outlet; the running control device is arranged as a control switch or an automatic control device; the control switch or the automatic control device is used for controlling the filling box conveying device to work or stop. According to the online packing machine, the labor intensity can be relieved, the number of operators can be reduced, the production efficiency is high, the content breakage rate is low, and the online packing machine is suitable for different sizes of fruits and vegetables.