78results about How to "Reduce storage space usage" patented technology

The present application discloses a distributed storage system. The distributed storage system comprises an agent module, a metadata service module and a plurality of storage service modules, wherein each storage service module manages at least one storage node; and the metadata service module is used for maintaining a global first level mapping table, and the storage service module is used for maintaining a second level mapping table. As adoption of a two-level metadata organization, when data is written, if same data exists, actual writing is not carried out, thereby reducing the data writing operation and fulfilling the aim of deleting the global duplicated data. The present application further discloses a corresponding data read-write method. The application scheme can achieve the following technical effects: achieving an online global duplicate data delete in the distributed storage system, thereby reducing the actual storage space; and when writing the data, as the duplicate data does not need the actual writing operation, thereby saving the data communication and bandwidth of the application systems and the storage systems, and improving the storage efficiency.

The invention provides an intelligent video perimeter rail system and a control method thereof, belonging to the technical field of video monitoring. The intelligent video perimeter rail system comprises front-end subsystems, a middle transmission subsystem, and a back-end center monitoring subsystem. Each front-end subsystem consists of an automatic tracer and a plurality of fixed video alarms; the middle transmission subsystem consists of a wireless router, a switchboard and a transmission cable; the back-end center monitoring subsystem comprises a center server, a monitoring host and a client; the front-end subsystems are connected in a wired, wireless or combined wired and wireless transmission manner; and the front-end subsystems are connected with the back-end center monitoring subsystem in a wired, wireless or combined wired and wireless transmission manner. Intelligent analyzing modules are arranged in the video alarms and the automatic tracer in an embedded mode, thereby reducing a report negative rate and a false positive rate in a traditional solution. The intelligent video perimeter rail system records and alarms after an abnormal target enters a prevention area through intelligent analysis, so that the network bandwidth is effectively reduced; the cost is reduced; and the technical defects and problems in automatic alarming, tracing, recording triggered by alarming, real-time transmission long-distance monitoring can be solved.

In order to solve the problems such as large amount of calculation, more storage space occupation and higher requirements to band width in a group key negotiation method in the prior technology. The invention provides a method of generating a group of secret keys as well as a system and equipment carrying out the method, which belongs to the network communication field. The method comprises the steps that: group members forms a logic ring, system parameters are selected and each member and a neighboring member generate a secret key and an intermediate value shared by the two members and issue the intermediate value; secret keys of other members shared by two members are calculated according to all intermediate values received to generate a group of keys. The system comprises a logic ring forming module, a system parameter selecting module, a message receiving and transmitting module and a group key generating module. The equipment comprises a logic ring forming module, a system parameter selecting module, a D-H public key value calculating module, a shared key generating module, an intermediate value generating module, a message receiving and transmitting module and a group key generating module. The technology provided by the invention solves the problems in the prior technology and is easy to use.

The invention discloses an Hbase-based internet log data inquiring method. The Hbase-based internet log data inquiring method includes inputting RowKey field values through a client, and sending an internet log inquiring request to the Hbase; subjecting the Hbase to acquiring a RowKey range meeting conditions according to the input RowKey field values, to be specific, the length of the RowKey is smaller than a preset length threshold value; according to the RowKey field values, subjecting the Hbase to finding out the corresponding column family range within the RowKey range and returning the column values of the found column families to the client, to be specific, all the internet log fields are saved in a column of a column family; subjecting the client to receiving and analyzing the column values. The invention further discloses an Hbase-based internet log data inquiring device. The Hbase-based internet log data inquiring method and device has the advantages that inquiry performance of the internet log data is improved, memory space occupation is decreased, and direct inquiry of the internet list data is facilitated for the external interfaces.

The embodiment of the invention discloses a picture combination method and device, relates to the picture processing technology, can solve the problem in the prior art that an amount of selected pictures is restricted, can improve the diversity of a picture combination layout template and reduces disk space occupation amounts. The picture combination method comprises the following steps: selecting a supergraph template and a subgraph template from a combination template library, and utilizing the subgraph template to fill a subarea of the supergraph template to form a picture combination layout template; and according to the picture combination layout template, combining pictures to be combined. The picture combination device comprises a template generation unit and a combination unit, wherein the template generation unit is used for selecting the supergraph template and the subgraph template from the combination template library and utilizing the subgraph template to fill the subarea of the supergraph template to form the picture combination layout template, and the combination unit is used for combining the pictures to be combined according to the picture combination layout template. The picture combination method and device is suitable for an occasion that various pictures are combined to form one combination picture.

The invention discloses an account clearing method and device, terminal equipment and a storage medium. The method comprises the following steps: acquiring user account information from an account database; setting an account level of the user account information according to identity information and an authentication state; determining problem accounts from the user account information accordingto a preset judgment condition according to the account level, the telephone number and the identity information; and computing the activity degree of each problem account according to the login frequency of the problem account in the preset time slot; screening out a to-be-cleared account from the problem accounts according to the preset screening condition based on the identity information, thetelephone number, the activity degree, the product purchasing record, and the account level; and removing the to-be-cleared account from the account database. Through the technical scheme disclosed bythe invention, the to-be-cleared account can be timely and automatically removed in the premise of not influencing the use of the user, and the occupancy on the storage space of the database is reduced at the same time, and the system performance is improved.

The invention discloses a program version backing method and device and an intelligent mobile terminal. The program version backing method comprises the following steps: after a backing request of an installation program to be backed in the intelligent mobile terminal selected by a user is responded, obtaining a stored target backing version number of the installation program to be backed; and according to the target backing version, obtaining an installation file corresponding to the target backing version, and carrying out installation on the basis of the installation file. The method can be used for obtaining the target installation file on the basis of the stored backing version number, and the version backing of the installation program selected by the user can be realized while the low occupancy rate of a memory space is guaranteed, and the program version backing method is convenient in operation, simple and easy in realization, so that the user can more freely select the installation version of an application program or an additional plugin required by the user.

The invention relates to a method for measuring IEC (International Electrical Commission) standard voltage flicker. The method includes initializing a measuring system, collecting voltage peak, preprocessing data, processing data based on a table look-up algorithm, processing data based on a frequency compensation algorithm, calculating short-time voltage flicker value, and calculating long-time voltage flicker value. With the simplified calculating process, RAM storage space occupancy rate is reduced, sampling continuity is guaranteed, and measurement accuracy is ensured.

The invention provides a logistics order data processing method and device in order to solve a problem that zombie logistic orders occupies extra storage spaces of a storage server and slows down inquiry speed. The logistic order data processing method comprises steps of monitoring data changing information broadcasted by a logistic order database, filtering the data changing information, and executing following operations after a set time duration on logistic orders expressed by identifiers contained in data changing information obtained after filtering; and the following operations comprise steps of inquiring a current order state of the logistic order in the logistic order database, if the order state of the logistic order after changing is consistent with a current order state, determining the order type of the logistic order, if the order type of the logistic order is the logistic order associated with an external transaction order, determining a current order state of the external transaction order associated with the logistic order, and changing the order state of the logistic order in the logistic order database according to the current order state of the determined external service order.

The invention discloses a method and device for generating a barcode image, and belongs to the field of computer technologies. The method comprises the steps that a wearable device receives a barcode generation instruction and acquires an original barcode plaintext corresponding to the barcode generation instruction; the wearable device performs code conversion on the original barcode plaintext according to a coding rule pre-stored in a firmware code to obtain a barcode value; and the wearable device draws the barcode value into a barcode image according to the firmware code and displays the barcode image. By means of the method, equipment similar to the wearable device having a small storage space can integrate the firmware code in a system program so as to implement generation of a barcode image under an embedded platform.

The present invention provides a compression based deduplication performance and deduplication rate improving method. The method comprises the steps of: S1, acquiring to-be-transmitted data and data length after deduplication; S2, compressing the data after deduplication; S3, replacing the data and the data length after deduplication with the data and the data length after compression; S4, comparing the data length after deduplication with the data length after compression; and S5, adding a difference value after comparison into a numerical value for calculating a deduplication ratio. The compression based deduplication performance and deduplication rate improving method and system disclosed by the present invention can improve the deduplication ratio and performance of deduplication, thereby better reducing the occupied data storage space, network occupied network bandwidth and data protection window time.

The invention discloses a context- adaptive quotient and remainder encoding method used for sensing data of wireless sensing nodes. The method comprises the following steps of orderly calculating differences of N sensing data to be encoded to obtain original difference values; respectively converting the original difference values to obtain the difference data, wherein the initial data digit D is 1, and i is equal to 1; using 2D as a divisor to obtain a quotient Q and a remainder R when the present difference data is used as a dividend; carrying out fixed-length encoding to the quotient, and carrying out length-variable encoding to the remainder; enabling the data digit D to be equal to the digit of the present difference data; and judging whether the next uncoded different data exists or not, if so, i is equal to i plus one, and executing the step 3, and if not, accomplishing the encoding to obtain the quotient and remainder codes of the difference data. The context- adaptive quotient and remainder encoding method used for sensing data of wireless sensing node has high compression ratio on both slowly changed data and non-slowly changed data, and can be smoothly operated among sensing nodes to realize lossless data compression. The context-adaptive quotient and remainder encoding algorithm used for sensing data of wireless sensing nodes has the advantages of low operation complexity and small occupied storage space.

The invention relates to a message synchronization method and device, electronic equipment and a storage medium, and belongs to the technical field of Internet. The message synchronization method comprises the following steps: receiving a synchronization request which is sent by a first client of first equipment and comprises time information; wherein the time information comprises the moment whenthe first client establishes communication connection with a background server and the receiving moment of the latest message in the first client; sending the synchronization request to a second client located in a second device, so that the second client determines a to-be-synchronized message according to the time information and uploads the to-be-synchronized message to a preset position; andnotifying the first client to obtain the to-be-synchronized message from the preset position so as to perform message synchronization according to the to-be-synchronized message. The message synchronization method and device can solve or improve the problem of message asynchronization of the main first device.

The invention provides a detection device for an ultrasonic transmitter and an ultrasonic receiver. The detection device for the ultrasonic transmitter comprises a processor, a sound card and a first ultrasonic receiver, wherein the processor is electrically connected with the sound card, and an output end of the first ultrasonic receiver is electrically connected with an input end of the sound card; and the first ultrasonic receiver receives ultrasonic waves transmitted by means of the ultrasonic transmitter of terminal equipment, the ultrasonic waves is subjected to signal conversion by means of the sound card, and then the processor judges whether the ultrasonic transmitter of the terminal equipment is qualified. The detection of the ultrasonic transmitter of the terminal equipment does not require manual operation, and the signal conversion is completely implemented by means of the detection device for the ultrasonic transmitter and the detection device for the ultrasonic receiver internally, thereby improving the detection efficiency.

The embodiment of the invention provides a video downloading method and device, and relates to the technical field of multimedia. The method comprises the steps of detecting that a user triggers a downloading operation in a video playing interface, and sending prompting information to the user; receiving downloading periods of time input by the user; sending a video downloading request carrying a video identifier and the downloading periods of time to a server; receiving and storing partial video data sent by the server according to the video downloading request, wherein the server carries out segmentation cutting on the video data corresponding to the video identifier by taking preset duration as a unit in advance, and the partial video data comprises segmented video data corresponding to the downloading periods of time. When the user wants to download the partial video data, the partial video data can be downloaded only by inputting the periods of time corresponding to the partial video data needing to be downloaded. The traffic of terminal equipment is effectively reduced. The occupation of the video data not required by the user to the storage space of the terminal equipment is reduced.

The invention discloses a cold and hot judgment method for mass data in a distributed storage system, which comprises the following steps of: counting the access frequency of data by adopting a multi-version hash table, and determining the cold and hot conditions of the data according to the access frequency. The method mainly comprises the steps of selecting a proper number of Hash functions, calculating corresponding Hash results of accessed indexes through the Hash functions in each time of data access, and then increasing values of the Hash results at corresponding positions in a Hash table of a current version; After multiple times of access, carrying out attenuation by switching the hash table of the current version and removing the first bits of all the hash tables of the version, so that the influence of old information is reduced; And finally, determining the cold and hot of the data by counting the data access information in all versions of hash tables. Compared with other methods in the field, the method has the advantages that higher cold and hot data judgment accuracy can be provided when the memory space with the same size is used, the cold and hot data are favorablyand respectively processed, and the system performance is improved.

The invention provides a data communication method which is applied to a communication gateway. The method comprises: firstly, generating the variable list according to the predefined variable data structure of each lower computer device, and the variables of each lower computer device in the variable list being continuously stored according to the preset rule, so that the communication gateway occupies a small storage space and has high storage efficiency when caching the variable data of the lower computer devices; then, generating a variable list index according to the variable data structure and the variable list; when a first data request frame from data request equipment is received, the communication gateway can send a first data request frame to the lower computer device accordingto a unique identifier of the requested lower computer device carried by the first data request frame, a requested variable and a variable list index, and quickly determine the storage position of therequested variable in the variable list, and then reading data corresponding to the requested variable from the variable list according to the determined storage position and returning the data to the data request device. The method is high in retrieval speed and high in response efficiency.

The invention belongs to the technical field of power distribution network unmanned aerial vehicle patrolling, and particularly relates to a power transmission network intelligent patrolling device based on an unmanned aerial vehicle. The power transmission network intelligent patrolling device comprises the unmanned aerial vehicle and an online power taking assembly arranged in the unmanned aerial vehicle. The power transmission network intelligent patrolling device is characterized in that the unmanned aerial vehicle comprises a light vehicle body and a rotor wing assembly arranged on the light vehicle body. The online power taking assembly is arranged on the lower side of the unmanned aerial vehicle body. The rotor wing assembly comprises a tubular hollow supporting barrel, a rotor wing, a driving motor and a storage battery, the rotor wing and the driving motor are arranged at the outer end of the supporting barrel, and the storage battery is arranged in the supporting barrel. Therotor wing assembly comprises a first rotor wing assembly body arranged on the front side of the light vehicle body and second rotor wing assembly bodies symmetrically arranged on the two sides of themiddle of the light vehicle body. The power transmission network intelligent patrolling device based on the unmanned aerial vehicle is light and simple in overall mass and perfect in function.

The embodiment of the invention provides a data processing method and device. The data processing method comprises the steps: obtaining to-be-processed time series data, and dividing the time series data into first time series data and second time series data; coding the first time sequence data based on a dictionary coding algorithm to generate a first coded value; coding the second time sequence data based on a column compression algorithm to generate a second coded value; and generating processed time sequence data according to the first coded value and the second coded value. According to the data processing method, the time sequence data is divided into two parts according to the data type, and the compression coding method corresponding to each part of time sequence data is adopted to perform compression coding on the time sequence data, so that the size of the time sequence data is greatly reduced, the occupation of the time sequence data on the storage space of the database is reduced, and the data volume of the time sequence data written into the database is increased.

The invention provides a double flat plate-supported three-dimensional mouth mask which comprises a filter material component, a face connecting component, an elastic planar supporting frame, two tying belts and a tying belt supporting plate in the shape of a rectangular flat plate. The tying belts are hitched to hitching portions of the tying belt supporting plate; the peripheral edge of the elastic face connecting component is fixedly combined with the peripheral edge of the filter material component to form a mouth mask body having an internal support space and a turned edge shape; the outer periphery of the supporting frame matches the peripheral edge of the internal support space in shape; the size of the outer peripheral edge of the supporting frame is greater than the size of the peripheral edge of the internal support space; the supporting frame is detachably installed in the internal support space; the peripheral edge of the supporting frame is pressed against a combination edge of the internal support space formed by combining the filter material component and the face connecting component to form an outward-protruding three-dimensional mouth mask structure. The invention also provides a manufacture method for the double flat plate-supported three-dimensional mouth mask. The double-flat plate-supported three-dimensional mouth mask has larger filter area and filter space, is comfortable to wear, and is convenient to machine, pack and transport.

The invention discloses a mail receiving method and device, wherein the method comprises the steps of: comparing the sending mailbox address of a mail with pre-stored mailbox addresses in a pre-set white list; and, when the sending mailbox address of mail is matched with a pre-stored mailbox address in the pre-set white list, receiving the mail, and otherwise, refusing the mail. According to the mail receiving method and device provided in the embodiment of the invention, the sending mailbox address of the mail is compared with the pre-stored mailbox addresses in the pre-set white list; when the sending mailbox address of mail is matched with a pre-stored mailbox address in the pre-set white list, the mail is received; and otherwise, the mail is refused; therefore, the mail can be sent toa user only in the sending mailbox address in the pre-set white list; all kinds of junk mailboxes are shielded; the user is prevented from being harassed by junk mails; and simultaneously, the junk mail storage space occupation problem at a server side can be reduced.

The invention discloses an encrypted instant messaging system and a communication method for protecting data safety. The communication system comprises a first client and a server. The first client comprises a first private account module used for storing a public key and a private key of a first user. A first contact account module is used for storing a public key of a second user. A first ECDH module is used for performing ECDH encryption on the private key of the first user and the public key of the second user to obtain a first secret key. A first AES module is used for performing AES encryption on the original information through a first secret key to obtain encrypted information. A first data transceiving module is used for sending the encrypted information to the server. The encrypted instant messaging system for protecting the data safety has the beneficial effects that all messages of the provided encrypted instant messaging system for protecting the data safety are asymmetrically encrypted. Only two parties participating in communication can know the messages. All encryption and decryption are completed at a user terminal, and a server cannot steal plaintext data of a user.

The invention relates to an RTL (Right To Left) layout adaption method and device based on Android, a storage medium and electronic equipment. The method comprises the following steps that: segmentinga page to be adapted to obtain each independent element on the page to be adapted; independently defining each independent element to determine the layout of each independent element; according to the layout of each independent element, generating the RTL layout file of the page to be adapted; and when the RTL layout function of an Android system is enabled, calling the RTL layout file to displaythe page to be adapted according to the RTL layout. Through the technical scheme of the invention, the RTL layout of the page to be adapted can be flexibly configured, RTL layout pictures do not needto be created and stored, the use of resource files can be reduced, and the occupation of the storage space of an Android system App is lowered.

The invention discloses a space-time trajectory accompanying analysis method and related components, and the method comprises: obtaining the original data of a collection object, carrying out the coding of spatial data in the original data, generating a character string, adding the character string to the original data, and generating preprocessing data; writing the preprocessed data into a time sequence library Druid, and pre-aggregating the preprocessed data by the time sequence library according to time granularity during writing to realize initial deduplication; receiving a trajectory query request for the target object, searching data and performing secondary deduplication to generate a first spatial-temporal trajectory of the target object and a second spatial-temporal trajectory ofthe accompanying object; and determining the number of accompanying times of the second space-time trajectory and the first space-time trajectory, and determining the accompanying degree of each second space-time trajectory and the first space-time trajectory. Rough deduplication is realized through the pre-aggregation operation by utilizing the time sequence library, data redundancy is avoided, space occupation is reduced, the secondary deduplication calculation speed is increased, a nonlinear data model does not need to be constructed for fitting during adjoint analysis, and the calculationcomplexity is reduced.

The embodiment of the invention provides a data query method and device, an index generation method and device and electronic equipment. The data query method comprises the steps that to-be-queried information used for querying multi-dimensional data is obtained, and the to-be-queried information comprises information of first multi-dimensional data to be queried; a first one-dimensional code corresponding to the first multi-dimensional data and a preset bitmap index storing a multi-dimensional data index are obtained, and the multi-dimensional data index is generated according to a second one-dimensional code corresponding to second multi-dimensional data; collecting a bitmap block file corresponding to the first one-dimensional code according to the bitmap index; According to the obtained bitmap block file, obtaining first multi-dimensional data queried by the to-be-queried information. Through the embodiment of the invention, the retrieval efficiency is higher.

The invention discloses data storage and retrieval methods and devices, a computer readable storage medium and electronic equipment, and belongs to the technical field of computer data. The data storage method comprises the following steps: acquiring a json text, the json text being in a json object format; processing the json text and outputting an mxkv record; and writing the mxkv record into a memory after data compression. The data retrieval method comprises the following steps: acquiring a specified target key value; and in the mxkv record of the data storage method, finding a value corresponding to the specified target key value according to the specified target key value. The computer readable storage medium can be used for implementing the steps of the data storage method and / or the data retrieval method. When the data method is applied to store key-value data, the key-value data can have high compression performance, high loading performance and high query performance at the same time.

The invention discloses a UVM-based large-scale memory read-write verification platform and a method thereof. Based on the UVM, the time and the space consumed by the verification platform are balanced by automatically judging dense and sparse storage behaviors of large-scale storage and differentially treating storage target areas, so that the occupied storage space during operation can be reduced, and the simulation speed is increased. The simulation verification platform model which is flexible in configuration, simple in operation and light in weight operation is provided for a large-scalememory read-write design module, and stable design and high-quality output can be guaranteed.

The embodiment of the invention discloses a node admittance matrix direct listing and writing method and device in a compressed storage form, wherein the method comprises the steps: obtaining node information of a network node and branch information of a network branch, carrying out node numbering of the network node, and defining the column vector of a node admittance matrix in the compressed storage form; and defining and constructing a node number column vector of a target network node and an admittance column vector of a target network branch, and finally performing splicing column writingon the node number column vector and the admittance column vector based on the column vector of the node admittance matrix to obtain a direct column writing result of the node admittance matrix and enter a cycle. According to the method and device, the unnecessary calculation amount increased by calculation and storage of a large number of zero elements is reduced, and the problem that the load flow calculation efficiency is seriously influenced due to the fact that the time required for forming the node admittance matrix is long is solved. The generation time of the node admittance matrix issaved, and the occupied memory and hard disk storage space are greatly reduced.

The invention discloses a block chain data storage method and device, equipment and a medium, and relates to the technical field of block chains. The method comprises the steps of updating a world tree of local data according to write data in a transaction request execution result in a process of executing each transaction request of a current block to generate a new data point and a new world tree root, the new data point being an entity data point or a patch data point of an existing entity data point; storing the new world tree root corresponding to the current block; and if it is determined that the existing block becomes the current snapshot block meeting the snapshot condition, updating a world tree of the current snapshot block into a snapshot world tree according to a transaction request between the previous snapshot block and the current snapshot block, the data point of the snapshot world tree being an entity data point. According to the technical scheme of the embodiment ofthe invention, a hybrid storage mode of the snapshot world tree and various state world trees is combined, and the processing time performance and the space performance of storage are both considered.