45results about How to "Resolve data conflicts" patented technology

The invention discloses a PBKDF2 cryptographic algorithm accelerating device. The device comprises a CPU+FPGA (Field-Programmable Gate Array) heterogeneous system composed of an FPGA and a universal CPU. The invention further provides a PBKDF2 cryptographic algorithm accelerating method. The method comprises the following steps: 1) initial: computing a pre-computing part and a part before a loop body of a PBKDF2 algorithm is executed in a CPU, and transmitting a computed result to the FPGA via a bus interface; 2) loop: placing a computing-intensive loop body part in the PBKDF2 algorithm onto the FPGA, improving an acceleration effect and a resource utilization efficiency on the FPGA using an optimization means, and transmitting the computed result to the CPU via the bus interface; and 3) check: reading result data obtained after FPGA accelerated computing, and performing computed result summarization as well as check value computation and judgment.

The invention discloses an intelligent data platform for a data center and an implementation method thereof. The intelligent data platform for the data center comprises a data source, a front-end datadistribution processing interface module, a data cleaning module, a data warehouse module, a data analysis module and a data display module. According to the platform and the implementation method thereof provided by the invention, various monitoring data from different data sources can be effectively received, and a process of retrieving data with a great number of different attributes in a distributed processing method is prevented; and thus, the data access efficiency is greatly improved, and the operation stability of the data center is guaranteed.

The invention relates to the field of message transmitting and receiving technologies, and discloses a periodic and non-periodic mixed communication method and a periodic and non-periodic mixed communication system used for a low-speed serial bus. The periodic and non-periodic mixed communication method comprises the steps of: sending a data message to a server in a serial mode by a client, wherein a periodic message is sent in each period, and a non-periodic message is sent when encountering an unexpected situation; analyzing whether a conflict occurs when the data message is sent at the moment; if so, storing the data message in a buffer Buffer temporarily; setting a flag bit Flag to be 0 when the server receives a sending command, and setting the flag bit Flag to be 1 when receiving the data message; and judging types of a sub-message according to a Resp value, updating the data if the sub-message is a periodic message, and writing the data into RespBuffer if the sub-message is a non-periodic message. Through the arrangement of the Buffer and the Flag, the periodic message and the non-periodic message are transmitted and received in a serial mode, thereby preventing conflicts between the periodic message and the non-periodic message, and carrying out corresponding treatment on the periodic message and the non-periodic message quickly.

The invention relates to the technical field of data synchronization, in particular to a table-level bidirectional synchronization realization method and system based on a trigger. The method comprises the following steps: source data changes in a current base table are captured; the source data changes are triggered by a synchronization system and/or a common user; source data changes triggered by a dedicated user are filtered out the source data changes triggered by a non-dedicated user is written into a corresponding CDC table; The synchronization system reads records in the CDC table and synchronizes another base table participating in bidirectional synchronization according to the recorded data. The table-level bidirectional synchronization is realized, a special user is created for the synchronization system, corresponding to the special user ID, which is different from the ordinary user, so that the trigger can filter the record according to the user of the current triggering operation, thereby preventing the data change triggered by the synchronization system from being written into the CDC table, thus solving the problem of the cycle triggering of the bidirectional synchronization.

The invention relates to a communication method of a wireless sensor network, in particular to a medium access control method of a wireless sensor network. The medium access control method includes the following steps of initializing protocol operation, requesting to send information, detecting application situations, authorizing sending nodes to send information, sending data and releasing a channel, wherein when the sending nodes send the data to one receiving node, the receiving node sequences IDs of the sending nodes from small to large according to the amplitude of the IDs of the sending nodes, the sending modes send the data to the receiving node one by one according to the sequence, and the problem that when multiple sending nodes send the data to one receiving node, the sending nodes contend for the same channel, data conflicts are caused is solved. The method for solving the data conflicts is novel; according to the method, a related sequence replaces control information of medium access control in the wireless sensor network to solve the data conflict problem, the throughout capacity of the network can be effectively improved, and energy consumption is reduced.

The invention belongs to the field of medium-term and long-term load forecasting in power distribution system planning and short-term load forecasting in power distribution system planning, relating to a cooperative load forecasting method based on maximum informational entropy. The method comprises the following steps of: calculating the statistical characteristics of an original forecasting scheme; analyzing the confidence level of the original forecasting scheme; obtaining a cooperative probability distribution function; simultaneously taking the statistical characteristics of an upper level and a lower level as constraint information, and obtaining the cooperative probability distribution function based on the maximum informational entropy principle; and obtaining a cooperative forecasting principle: based on the cooperative probability distribution function, calculating mathematical expectation and maximum probability, and finally determining the high scheme, medium scheme and low scheme of cooperative load forecasting. The method applies the maximum informational entropy principle in the theoretical research of load forecasting under power grid cooperative planning mode, and can realize the information comprehension of multi-section, multi-path and multi-scheme, thereby effectively solving the problem of data collision of an upper level network and a lower level network, realizing the cooperative forecasting of the upper network and the lower network and providing the reference basis for the planning and operation of the power distribution system planning.

The invention provides a device and a method for regulating interface access of a plurality of file systems on the same disk partition. A plurality of file systems comprise a first file system and at least one second file system, wherein the first file system is a file system positioned on a kernel layer; and the second file system is a file system positioned on a user layer. The regulating device is provided with a synchronization module for coordinating the operation of each file system on the disk partition. When any one of the file systems is used, the following operations of a detection step, an allowance step, a protection step and a synchronization step are carried out by the synchronization module. The invention effectively solves the problem of data contention which is possibly generated when a plurality of file systems simultaneously work.

The present invention discloses a data channel interference cancellation method, including: engaging in the bit-level channel recoding of received transmission block data, and engaging in the channel estimation of said encoded data and multiplexed data channel antenna data, thus obtaining channel estimation data; using said channel estimation data to engage in data channel reconstruction of the encoded data, wherein the unit used is the reconstruction unit; taking the difference of the obtained post-reconstruction data and the antenna data, thus achieving interference cancellation. The present invention additionally discloses a data channel interference cancellation system.

The invention discloses an efficient wireless seismic data transmission protocol design method based on LoRaWAN. The method comprises spread spectrum factor distribution based on a transmission weightand transmission time sequence distribution based on a hash function; the spread spectrum factor distribution is characterized in that a coarse-grained adjustment spread spectrum factor is adopted ata seismograph terminal, a gateway performs fine-grained adjustment by referring to the primary distribution result of the seismograph terminal to realize collision weight balance of channels with different spreading factors; and the transmission time sequence distribution is characterized in that according to the built-in GPS high-precision time service of the seismograph, hash function mapping is used for endowing the seismograph with a sending time sequence, uncertain collision is converted into deterministic collision, and large-scale and reliable wireless seismic data transmission networkconstruction is achieved. The method has the advantages that through the technical scheme, the network capacity can be effectively expanded, the data extraction rate of the network is improved, and the problems of data conflicts and network delay existing in a traditional method can be solved.

The invention relates to an electronic device and a method for accessing the electronic device. The electronic device comprises a storage device. The storage device comprises a first storage area and a second storage area, wherein the first storage area is used for storing label data, and the second storage area is used for storing general data. The electronic device and the method for accessing the electronic device can solve the problem of error pairing of the label data in the electronic device and device information in the prior art.

The invention provides an information flow control method. The method herein includes the following steps: acquiring the data that are input to cloud service; determining whether the data are sensitive data; if the data are sensitive data, based on the safety tag of the data, determining whether the data meet preset sensitive data input rules; and if the data do not meet preset sensitive data input rules, forbidding the inputting of the data to the cloud service. The aforementioned method can identify the sensitive data that may bring conflict of interest to the cloud service, blockages such sensitive data in an effective manner, can address data conflict in cloud composite service, and prevents the cloud service in the cloud composite service from having conflict of interest.

A time slot allocation and control method for a high-speed time division multiplexing communication bus performs time slot allocation and management through a bus controller, realizes data transmission between the bus controller and a remote terminal, is flexible in allocation method, can timely and effectively process various abnormal conditions on the bus, avoids data loss, and realizes the reasonable and effective time slot management and control; all data transmission is carried out under the command of the bus controller, the reliability is high, priorities are set for different data transmission requests, and the data requests with high real-time requirements can be sent in time and the transmission delay is small.

The invention relates to the technical field of data transmission management, in particular to a multi-master-to-multi-slave access arbitration method and system based on an FPGA and a storage medium. The read-write access data of each main port is subjected to standardized analysis through the interface conversion module, the decoded read-write access data is subjected to priority ranking arbitration processing through the arbitration module, and the read-write access data is subjected to priority ranking arbitration processing by expanding independent write address channels, write data channels, write response channels, read address channels, read data channels and read response channels. And orderly and stable transmission of read-write access data and corresponding response data between a plurality of master ports and a plurality of slave ports is carried out, so that a whole set of efficient interactive design method is provided, and arbitration logic optimization of accessing the plurality of slave ports by the plurality of master ports is realized. The problems of data conflict and stability in the multi-master and multi-slave communication process between a plurality of master ports on a chip and a plurality of slave function modules in an FPGA are solved.