56results about How to "Avoid reading and writing" patented technology

The invention relates to a video detecting data storage method and relative system, which uses network to connect the data processor and the storage device. Wherein, said method comprises: dividing the video data into several data blocks and sending the data blocks to the storage device to be stored; reading stored data block to recover the video data; the data processor divides the stored data into several data blocks in same size, and assembles several data blocks into the data units in the same size; building index for each data unit; according to the index, reading the data block of storage device to recover the video data. The inventive video detecting data processor will directly process block operation on the storage device, to realize high-efficiency access to the video data of video detecting network, to improve the reliability and application flexibility of video data.

The invention discloses a multi GPU calculation based reverse time migration imaging method of a 3D TTI medium. According to the method, a stable second-order coupling equation set serves as a calculation model, finite SV wave components are given to enhance the wave field spreading stability, an anisotropy parameter matching method is used to suppress interference of pseudo-transverse waves, uniform anisotropy boundaries corresponding to a random speed boundary and other parameters are introduced, storage of large amount of wave field data and frequency disk reading and writing are avoided, and a GPU-based CUDA platform is used to realize high-performance parallel calculation. According to the invention, a second-order coupling quasi-acoustic equipment in the TTI medium is solved in a difference method on the basis of multi-GPU parallel calculation technology, wave field spreading is stable, pseudo-transverse waves are suppressed effectively, application of the random boundary reduces wave field storage and disk reading and writing, a multi-asynchronous-flow high parallel strategy of multi GPU calculation is used, the calculation efficiency is improved obviously, and the imaging method meets requirements for industrialization of anisotropy reverse time migration.

The invention relates to a method for head attitude compensation. The method comprises: according to display time of at least two rendered image frames, predicting rendering completion time t1 of a to-be-displayed image frame; according to the t1, calculating display start time t2 of the to-be-displayed image frame; according to the t2, calculating first time, predicting a first time head attitude Q, according to the head attitude Q, rendering the to-be-displayed image frame; according to start time a of any completed display cycle, calculating start time t of a to-be-displayed cycle; according to the t and the display cycle T, calculating second time, to obtain a second time head attitude Q', and according to the Q and the Q', calculating a head attitude compensation matrix; according to the attitude compensation matrix, performing attitude compensation calculation on the to-be-displayed image frame; according to vertex coordinates after attitude compensation and vertex coordinates of the to-be-displayed image frame, calculating a correction coefficient; and according to the correction coefficient, calculating a display image frame after the head attitude compensation. The method and the device accurately compensate head attitude of the to-be-displayed image frame, so that smear phenomenon and dizzy feeling in VR system use are reduced.

The invention discloses a high-performance and easy-to-expand key value storage method utilizing a differential index mechanism. The method is characterized by comprising the steps of differential index design, partial separation of key value data pairs, data dynamic partition management based on a key value range and range query optimization. Due to the fact that a two-layer storage architectureis adopted and the hash index is established for the hot data of the disorder layer, the system can fully utilize the locality principle of the data to accelerate access to the hot data, and low indexmemory overhead and efficient data query efficiency are guaranteed; in addition, parts of the key value data pairs are separately stored, so that the merging efficiency is greatly improved; secondly,dynamic partition management is carried out on data in different key value ranges, transverse horizontal expansion of key value storage is achieved, and it is guaranteed that efficient read-write performance can be obtained under large-scale data storage; and finally, merging strategy based on the number of files is designed, log files are read in parallel by adopting a multi-thread technology, and range query is accelerated in combination with a pre-reading mechanism.

Provided in the invention is a shock-proof method of a vehicle-mounted mechanical hard disk. The method is applied to a vehicle-mounted recording device containing an electronic storage medium. The method comprises: vibration warning zone information is obtained; if a current vehicle is driven into the vibration warning zone, the vehicle-mounted recording device uses the electronic storage medium to carry out recording and storage; if the current vehicle is driven out of the vibration warning zone, the vehicle-mounted recording device uses a mechanical hard disk to carry out recording and storage. According to the technical scheme provided by the embodiment of the invention, the vehicle-mounted recording device can get vibration zone information in advance and thus switches the mechanical hard disk to the electronic storage medium in advance, thereby substantially prolonging the service life of the mechanical hard disk in the vehicle-mounted recording device. Besides, because the electronic storage medium is only used for buffering, the capacity is low, so that the device cost is increased little.

The embodiment of the present invention provides a file processing method, device and system. The method comprises: receiving an access request sent by user equipment; according to the access request, accessing share-file system directory of equipment to be accessed and obtaining the share file of the equipment to be accessed; and if the file type supported by user equipment corresponding to an identification of the user equipment is not same with the file type supported by the equipment to be accessed corresponding to an identification of the equipment to be accessed, according to the file type supported by the user equipment and the file type of the equipment to be accessed, transforming the share file type and sending the share file after transforming to the user equipment. The embodiment of the present invention, by carrying out a transmitting process of the share file type, realizes the intercommunication among the equipments without increasing hardware cost and complex drive program development.

The invention relates to a pulsating array processing circuit for implementing wavefront control operation of a self-adapting optical system, arranging multiple processing elements into two linear structures to respectively complete convolution and recursion operations and using an addition processing element to link the two arrays together to implement the wavefront control operation; and n voltages are serially calculated in time-division multiplexing mode in an array, and the processing elements implement data transfer between adjacent elements by shift registers, avoiding memory read-write operation. And the arrays of the invention have features of data communication localization, and simple data and control streams, saving resources and convenient to implement with hardware.

The invention provides a plug-in work order auxiliary decision-making method and system based on artificial intelligence, and belongs to the technical field of artificial intelligence. According to the invention, a plug-in work order assistant scheme is adopted to reduce the transformation cost of a work order processing system of an enterprise, and the existing systems and processes are reused tothe maximum extent; meanwhile, the front platform and the rear platform of the plug-in work order assistant are deployed in an enterprise internal network, data is obtained in a page monitoring and interface butt joint mode, the reading and writing of the whole database are avoided, and the safety of the data is improved; secondly, the functions of user problem classification, automatic work order distribution, work order portrait construction and priority calculation, work order information automatic query and display, intelligent decision of a solution, automatic backfilling of scheme information and the like are achieved through the artificial intelligence technology, and the intelligent degree of work order processing is improved; and finally, the modularized algorithm module supportsthe development and optimization of an algorithm model in a work order assistant, so that the modeling efficiency is improved, and the transformation and deployment cost caused by the algorithm optimization after the system is online is reduced.

The invention relates to a joint photographic experts group (JPEG) image compression concurrency control method based on a digital signal processor (DSP), which comprises the following steps: adjusting a JPEG algorithm structure, adopting a step-by-step completed strategy for image data partitioning operation, namely encoding while partitioning, and simultaneously transferring partitioned data block units into an internal memory to be processed; opening up two memory areas in the internal memory; dividing JPEG algorithm by combination with encoding structure characteristics and a hardware structure of the DSP, achieving concurrency completion in the two memory areas in the internal memory through the DSP and a peripheral device enhanced direct memory access (EDMA), and achieving concurrent execution of the JPEG algorithm on the DSP based on the concurrency completion. The JPEG image compression concurrency control method prevents a processor from reading and writing an external memory, greatly prolongs JPEG encoding time, provides conditions for JPEG real-time processing, and improves utilization rate and algorithm execution efficiency of the DSP.

The invention provides an application account management method and device based on an android system. The application account management method includes the following steps: receiving an account login request of service request application; judging whether account reference records of the account login request and the service request application are matched; on yes judgment, increasing account reference count in the account reference records, conducting login processing according to the account login request, and feeding back account login succeeding information to the service request application. When the service request application conducts login, validity is verified, the reference records of the service request application are updated, intelligent account management is achieved, login of malice application is prevented, and data read-write of the malice application is avoided.

The invention discloses a state monitoring method of a distribution automation wireless public network communication system. The state monitoring method comprises the steps that a communication protocol is added between a distribution terminal and a wireless data transmission module, a CPU in the wireless data transmission module frequently issues AT instructions to obtain state data of a communication module, meanwhile, the CPU records the state data of the wireless data transmission module, the distribution terminal regularly and frequently issues state calling frames to the wireless data transmission module through the communication protocol, the wireless data transmission module correctly recognizes and receives the data calling frames, then replies state response frames to the corresponding distribution terminal and sends the state data to the corresponding distribution terminal according to the communication protocol, and the distribution terminal stores and analyzes the state data after obtaining the state data to judge the communication state of the distribution automation wireless public network communication system. By means of the state monitoring method, abnormal communication events of the distribution automation wireless public network communication system can be recorded and analyzed in time.

The invention relates to the field of function material design and high-performance calculation, in particular to a coarse particle parallel method and system for electromagnetic function material optimization design. The method comprises the steps of obtaining a serial version by taking a coarse particle as an independent execution module, and obtaining a parallel version by taking the coarse particle as a basic execution unit; further, processing a plurality of calculation tasks by adopting an allocation policy of random sorting, wherein the allocation policy of random sorting can thoroughly disrupt an allocation sequence of all the calculation tasks to obtain a new sequence of the calculation tasks; then, applying for allocating to-be-allocated calculation tasks in the new sequence by each calculation process through adopting a first-application first-allocation policy, and performing calculation until all the calculation tasks are finished; and finally, performing statistics on calculation results, performing targeting processing, comparing a processing result with an expected optimization goal, and judging whether the optimization goal is achieved or not. According to the coarse particle parallel method, the problem of low parallel calculation efficiency in electromagnetic function material optimization design at the present stage is effectively solved.

The invention relates to a starting method and system of a solid-state hard disk under the condition of low temperature. The method comprises the following steps of: S1, using the host computer to power up the SSD; S2, starting to run the SSD internal loading firmware, initializing the peripheral equipment of the SSD firmware, and accessing a temperature sensor to obtain the on-board temperature;3, judging whether the on-board temperature is low than the threshold value; S4, shutting down an ECC engine and continuously reading the invalid fill data in the reserved block; 5, judging whether that on-board temperature reach a preset threshold value; S6, turning on the ECC engine, eatablishing the physical connection with host computer, rebuilding mapping table inside SSD, after rebuilding the mapping table, normally responding to the host computer to read and write commands. When the system is just powered on, the invention monitors the on-board temperature, when the on-board temperatureis lower than the threshold value, the invention initiates the empty reading of invalid data, causes the SSD to work in the high power consumption state, raises the on-board temperature, causes the NAND to work in the suitable temperature range, and correctly reads the data.

The invention provides an unknown program exception request monitoring method and device and an electronic device, and the method comprises the steps: monitoring whether a target request is received in a driving layer of terminal equipment through utilization of a microfiltration driver of a file system, and enabling the target request to be used for requesting to open a file; Under the conditionthat the target request is monitored, judging whether the target request is a behavior of reading and writing a disk by an unknown program request according to the requested file object and the equipment object corresponding to the file object by utilizing a microfiltration driver; under the condition that the target request is not the behavior of reading and writing the disk by the unknown program request, allowing to execute the target request; And intercepting the target request under the condition that the target request is an unknown program request reading and writing behavior on the disk. Through the method and the device, the problem that a file-level monitoring method cannot prevent a malicious program from directly reading and writing a disk in the prior art is solved.

An embodiment of the invention provides a method for detecting IP network bandwidth and an apparatus thereof. The IP network bandwidth can be detected without occupying too much storage space. The method comprises the following steps: a small base station downloads file data from a server and is connected to the server through an IP network; the small base station saves received data at a cache region of a memory by utilizing a virtual file system, and records data length of accumulated download; after the cache region is full, the small base station releases the cache region; after a file is downloaded, the small base station records total consumption time of downloading the file, and calculates IP network downlink bandwidth according to file total length and the total consumption time. According to a technical scheme provided by the embodiment, small base station storage space can be effectively saved when detecting the IP network bandwidth.

The invention provides a data read-write method and a control device of semiconductor processing equipment. The data read-write method comprises the following steps: S1, dividing a memory data area of a processor into a plurality of partitions; s2, establishing a plurality of memory mapping regions in one-to-one correspondence with the plurality of partitions; s3, monitoring a read identifier and a write identifier of each memory mapping area in real time; s4, correspondingly storing the data in the one or more partitions into the one or more memory mapping regions according to respective reading periods of the one or more memory mapping regions when monitoring that the reading identifiers of the one or more memory mapping regions are set to be read; and S5, correspondingly writing the data in the one or more memory mapping regions into the one or more partitions when monitoring that the writing identifiers of the one or more memory mapping regions are set to be written. According to the data read-write method provided by the invention, the read-write of redundant data can be effectively avoided, so that the read-write execution efficiency can be improved.

The embodiment of the invention discloses a method for flash memory write-in under a sector mode, comprising the following steps of: judging whether data exist in a temporary storage block after finding a logical block, a cache block and the temporary storage block of current operation, and if the data exist in the temporary storage block, reading the data and writing the data into the cache block; then, writing the data of the operation into the cache block until the remained data are not enough to be written full of the length of a page; and then, temporarily storing the data with the remained length on the temporary block to end the operation. The invention also provides a system for flash memory write-in under a sector mode according to the method for flash memory write-in. By using the method and device provided by the invention, frequent whole-block reading and writing can be avoided, and the reading and writing speeds of Flash are greatly increased.

The invention provides a memorizer partition isolating method and device and an electronic device. The method includes the steps of before read-write operation is conducted on the designated logic block address of an external storage device, establishing a read-write operation command containing a designated logic block address, judging whether the read-write operation command has execute permission or not, and correspondingly processing the read-write command according to the result of judgment on whether the read-write operation command has execute permission or not. The access of software to an unauthorized logic block address can be stopped under a limited scene, the read-write and damage of malicious software to secure data are effectively avoided, and the influences on system performance are small.

The embodiment of the invention provides a label printing device. The label printing device comprises a machine body and a read-write antenna. A paper channel frame is arranged in the machine body andprovided with a paper feeding channel, the paper feeding channel is used for allowing labels to pass through, the machine body is provided with a paper outlet, and the paper feeding channel communicates with the paper outlet and is used for communicating with the outside through the paper outlet. The read-write antenna is arranged in the machine body, located on the side, provided with the paperfeeding channel, of the paper channel frame and faces the paper feeding channel. According to the label printing device, when a label passes, the read-write antenna is located above the label, and therefore the problem that an antenna is arranged below a paper channel frame and cannot well penetrate through a metal sheet to read and write the label is avoided, and it can be guaranteed that the label is well read and written; and after the label is output through the paper outlet, the part, drooping due to gravity, of the label is far away from the read-write antenna at the moment, and the problem that previously, an antenna is arranged below a paper channel frame, and consequently, cross reading is prone to being caused when the label already output from the paper outlet is read and written is avoided.