Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
49results about How to "Guaranteed hit rate" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Periphery searching method and device of points of interest
ActiveCN102176206AGuaranteed hit rateImprove hit rateInstruments for road network navigationSpecial data processing applicationsData miningAlgorithm
The embodiment of the invention discloses a periphery searching method and device of points of interest, relating to the field of navigation. The periphery searching method and device of the points of interest can reduce the searching range and POI (point of interest) searching time in an area with higher POI density on the premise of ensuring a certain hit ratio, and enlarge the searching area and improve the hit ratio of POI searching in an area with low POI density. The periphery searching method of the points of interest comprises the steps of: obtaining the position of a reference point around the point of interest, and obtaining the distribution density of points of interest in the area unit to which the reference point belongs according to the position of the reference point; calculating the searching distance of the points of interest according to the distribution density of the points of interest; creating a searching area of the points of interest by taking the position of the reference point as the center and the searching distance as the searching radius; and searching the points of interest in the searching area according to keywords input by a user, and obtaining thepoint of interest matched with the key words. The periphery searching method and device of the points of interest, disclosed by the embodiment of the invention, are mainly used in the periphery searching process of the points of interest.
Owner:SHENZHEN TRANSSION HLDG CO LTD
Data block inquiring method for supporting data de-duplication program
InactiveCN102467572AGuaranteed hit rateReduce the problem of read queriesSpecial data processing applicationsData deduplication
The invention discloses a data block inquiring method for supporting a data de-duplication program, which improves the speed for the data de-duplication program to inquire the data blocks. The inquiring method comprises the following steps: storing a hash index list into a server; producing data blocks and hash values by a client according to input files; sending an inquiring request to the server by the client, wherein the inquiring request records the hash values of corresponding data blocks; sending a storage requirement to the client by the server when the server stores no hash values, and adding received hash values into the hash index list; building a corresponding associated data index list to the hash index list, and recording the data block information associated with the hash values in the associated data index list; returning the hash values in the corresponding associated data index list to the client according to the hash value when the hash value is stored in the server.
Owner:深圳优依购服饰有限责任公司
Method and device for updating cache resources
ActiveCN106657249AGuaranteed hit rateReduced scope of update checksTransmissionCache serverResource information
The invention provides a method and a device for updating cache resources. The method, which is applied to a cache server of a content delivery network CDN, comprises the following steps: receiving a resource request message from a user side, wherein the resource request message contains target resource information of a requested target resource; looking for the target resource information in a pre-created hit table, wherein the hit table is used to save the corresponding relationship between the resource information of locally downloaded cache resources and the aging time; if the target resource information is not found in the hit table and the target resource is locally cached, checking whether the target resource needs to be updated; and if the target resource needs to be updated, updating the target resource, and adding the target resource information and the aging time set for the target resource information to the hit table. According to the embodiments of the invention, by setting the aging time for the cache resource information and introducing the aging time to the hit table, the range of cache resource update check is narrowed, and the update efficiency is improved.
Owner:HANGZHOU DPTECH TECH
CPU affinity-based virtual CPU dynamic binding method
InactiveCN101976201AImprove execution efficiencyGuaranteed hit rateMultiprogramming arrangementsSoftware simulation/interpretation/emulationOperating systemPerception
The invention discloses a CPU affinity-based virtual CPU dynamic binding method under a multi-core platform. Two modules, namely a guest operating system CPU affinity perception engine and a virtual CPU dynamic binder are used in the method. The guest operating system CPU affinity perception engine acquires CPU affinity information of a process to be executed from Guest OS, and provides the information for the virtual CPU dynamic binder by adopting quantified VAC (Value of Affinity Coefficient) CPU affinity coefficient value; and the virtual CPU dynamic binder module executes the corresponding strategy through the CPU affinity information provided by the guest operating system CPU affinity perception engine to realize dynamic binding of a virtual CPU.
Owner:BEIHANG UNIV
Method and device for determining search intention of user
ActiveCN111680207AMatch the actual search intentFit hit rateNeural architecturesNeural learning methodsSearch wordsFeature vector
The invention provides a method and a device for determining a search intention of a user. The method comprises the following steps: constructing a to-be-searched target knowledge graph and semantic concept feature vectors of entities according to an initial entity set; constructing a heterogeneous node graph and a corresponding first adjacent matrix; receiving a historical search click event, andestablishing a supervision model of the first adjacent matrix; receiving a current search keyword, and generating a candidate search intention extension entity set according to the current search keyword and the to-be-searched target knowledge graph; performing intention reasoning on the candidate search intention extension entity set by utilizing a supervision model to obtain a to-be-extended search keyword result set corresponding to the search intention; determining a target search keyword sequence corresponding to the search intention according to the to-be-extended search keyword resultset and the semantic concept feature vector. Therefore, when the search term input by the user has diversity, fuzziness and ambiguity, the knowledge graph and the semantic concept feature vector can be used for reasoning, expanding and filling the search term, so that the search is clearer.
Owner:EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
Web caching method based on comment description
The invention aims to provide a web caching method based on comment description. In a controller, data caching of the method is set through @before (CacheInterceptor.class). A cache which is set by the controller of the method is eliminated through @Before(EvictInterceptor.class). According to the web caching method, programming operation by means of Java API is not used, thereby preventing operation error of a programmer. A user does not require considering a problem of caching a certain object into a certain cacheName. Different interceptor configurations are used in a cache reading operation and a cache eliminating operation. No parameter exists and the workload of the programmer is greatly reduced. The web caching method supports clustering arrangement of multiple cache servers. Furthermore a cache server is shutdown and offline, or the cache server goes online again, cache plug-ins are adapted automatically, thereby automatically adjusting distribution of the caches, and ensuring a fact that the cache hit rate reaches an expected number.
Owner:CHINA YOUKE COMM TECH
Buffer area management method for NAND flash memory
The invention discloses an NAND flash memory-oriented buffer area management method, which comprises the following steps of: dividing a database buffer area into a cold clean linked list, a cold dirtylinked list and a mixed linked list, and numbering the cold clean linked list, the cold dirty linked list and the mixed linked list according to an overall access sequence; on the overall logic, thebuffer area is regarded as a single linked list organized according to an access sequence, a time window concept is provided, and data pages accessed in the latest period of time are covered; when buffer replacement occurs, checking whether a data page pointed by the tail of the linked list is in a time window or not according to the priority sequence of the cold clean linked list, the cold dirtylinked list and the mixed linked list; if so, searching a next linked list; and if not, directly replacing. According to the method, the flash memory write operation frequency is reduced while a relatively high hit rate is obtained, so that higher cache income is obtained, and the overall performance of the storage system is improved.
Owner:XI AN JIAOTONG UNIV
Dalvik virtual machine just-in-time compilation (JIT) acceleration method based on software Cache
InactiveCN103092618AReduce correlationReduce conflictSoftware simulation/interpretation/emulationSoftware cacheJust-in-time compilation
The invention discloses a Dalvik virtual machine just-in-time compilation (JIT) acceleration method based on a software Cache. The technical scheme includes that firstly, the software Cache is built in a Dalvik virtual machine, the software Cache adopts two-group connection structure and is added before a local code hash table; secondly, when a local code is found through a bytecode address, the local code is firstly found in the software Cache, when the local code is found out, the local code is directly accessed, when the local code is not found out, the local code is found in the local code hash table, when the local code is found out in the local code hash table, contents in lines of the software Cache are selected and written, when the local code is not found out, a compiling thread is waken up to compile the bytecode into the local code, and the local code hash table and the corresponding lines in the software Cache are simultaneously updated. Due to the fact that times of finding the local code hash table with a complex Hash algorithm in the Dalvik virtual machine are reduced, the Dalvik virtual machine JIT acceleration method based on the software Cache has the advantages of reducing system overhead of finding the local code hash table, thereby improving performance of a whole Android system.
Owner:SOUTHEAST UNIV
Track monitoring system and method
ActiveCN110969118AReduce the number of matchesGuaranteed hit rateTelevision system detailsCharacter and pattern recognitionEngineeringPedestrian
The invention discloses a track monitoring system and method. The system includes: a first camera used for shooting an entrance of a monitoring range, a second camera for shooting an entrance of the monitoring range, a face detection module, and a server; the face detection module extracts first face information from a video shot by the first camera, and the tracking detection module extracts second face information and pedestrian position information from a video shot by the second camera; and the server performs face matching in a first face database according to the first face information,and writes the matched face data into a second face database, so that the matching number is reduced when the second face information extracted by the tracking detection module is matched. According to the invention, the calculation amount of face matching during pedestrian tracking can be greatly reduced. The method can be widely applied to the technical field of pedestrian tracking.
Owner:GRG TALLY VISION I T CO LTD +1
Configurable caching system and method
ActiveCN105117350AGuaranteed hit rateMemory adressing/allocation/relocationTransmissionRewrite engineProgramming language
The invention provides a configurable caching system and method. The system comprises a front-end scheduler and a front-end cache server. A related location rule and an embedded script Lua language are provided in the front-end scheduler. According to the system and the method provided by the invention, by using url rewriting technology and a self-defined header field value in the front-end scheduler, factors that may interfere with caching are eliminated, thereby ensuring a hit rate of caching to a maximum extent; it is ensured that different URLs are cached according to same logic; meanwhile, it is ensured that login users are provided with separate caching logic for a same URL.
Owner:MOLBASE SHANGHAI BIOTECH CO LTD
LRU and LFU united cache update method and network based on location variation
InactiveCN106973088AGuaranteed hit rateCalculation parameters are easy to obtainTransmissionCache hit rateHit ratio
The invention discloses a popular content cache update method, a communication device and a network applicable to a mobile cellular network. Content cached in a node is partially updated at the right time according to a node location relation by LRU and LFU cache update methods. According to the cache update method provided by the invention, a data size for updating the cache is greatly reduced. The update method is adjusted aiming at characteristics of the user node of the mobile cellular network based on the existing LRU and LFU cache content update method. Particularly, in view of limited information acquisition capacity and computing capacity of the node, the method can update the cache in real time by only using information such as the node location variation, received content request and time owned by the node, in combination with a content value model of the LRU and LFU, so that balancing between the computing overhead and a cache hit ratio is achieved to a certain degree.
Owner:PLA UNIV OF SCI & TECH
Transparent and universal file cache system
ActiveCN101710341AAchieve transparencyImprove versatilitySpecial data processing applicationsMessage queueSingle process
The invention relates to a file cache system, in particular to a transparent and universal file cache system. The system consists of five modules, namely a core module, a configuration management module, a massage queue management module, a communication module and a cache operation module. The whole system adopts a single-process and multithreading model, wherein the core module and the configuration management module operate in a thread 0; the communication module operates in a thread 1; the cache operation module operates in a thread 2; and the massage queue management module is shared globally. In the system, the core module is responsible for reading configuration information and initializing other functional modules. By the massage queue management module, other functional modules can realize mutual exclusion access to a massage queue. The system is communicated with a client by the communication module, receives a caching massage and delivers the cache massage to the cache operation module to process, and then returns a processing result to the client. By using the link modification technology, the transparent and universal file cache system can efficiently realize the file cache operation; moreover, by using the link modification technology, the system provides high transparency for application; and the modularization design and the excellent user interface make the system have excellent universality.
Owner:XFUSION DIGITAL TECH CO LTD
Content central multi-hop cellular network routing method and device
ActiveCN104093181AReduce consumptionImprove resource utilizationPower managementHigh level techniquesContent IdentifierElectricity
The embodiment of the invention provides a content central multi-hop cellular network routing method and device. The method comprises the steps that a first node broadcasts content identifiers to nodes in the i-hop range of the first node, and therefore a second node in the i-hop range of the first node determines first routing information of a forwarded interest package, and a first directory node broadcasts content identifiers and a first directory node identifier to a second directory node and nodes within the coverage range of the first directory node. According to the method, forwarding nodes which are located in the same area with the position of target content are determined through the position of the target content, a forwarding node forwards the interest package in the direction of the position of the target content, and compared with the mode that the nodes inform all nodes in the network of cache content, consumption of wireless spectrum resources in the network is reduced, consumption of electricity in the nodes is reduced, the network resource utilization rate is improved, and the survival time of the network nodes is prolonged.
Owner:BEIJING UNIV OF POSTS & TELECOMM
An unstructured grid many-core coarseness parallel computing method
InactiveCN109684061AAddressing Adaptive IssuesImprove computing efficiencyProgram initiation/switchingResource allocationDecompositionSystem structure
The invention discloses an unstructured grid many-core coarseness parallel computing method. According to the method, on the basis of region decomposition of a first-level non-structural grid, second-level thread level region decomposition is added, each slave core solves a respective independent calculation region, the data hit rate of a slave core calculation task is ensured, and coarse-grainedparallelism of an MPI process level and coarse-grained parallelism of a slave core thread level are achieved. According to the method, the problem of adaptability of a common non-structural grid applied to a polymorphic heterogeneous processor can be solved, secondary load balance and coarse-grained many-core parallelization of a calculation core are automatically completed according to the scaleof non-structural grid data, and the calculation efficiency and the parallelization efficiency of numerical simulation of the non-structural grid on a heterogeneous system structure are improved.
Owner:JIANGNAN INST OF COMPUTING TECH
Flash memory data buffer area replacement method based on page access interval
InactiveCN107341112AGuaranteed hit rateReduce write operationsMemory architecture accessing/allocationMemory adressing/allocation/relocationDirty dataReplacement method
The invention discloses a flash memory data buffer area replacement method based on a page access interval. In the method, all data pages cached in the data buffer area are divided into hot dirty data pages, cold dirty data pages, hot clean data pages and cold clean data pages according to access interval characteristics and reading / writing characteristics of the data pages in the buffer area, and all the data pages are managed by using a primary data buffer area and a secondary data buffer area. When the cold data page access interval is less than the last hot data page in an LRU queue of the buffer area, conversion between cold and hot data pages is performed, and meanwhile, the cold data page in the LRU queue of the primary buffer area is moved into the secondary data buffer area. When the data buffer area page needs to be replaced, the cold clean data pages in the secondary buffer area are preferentially shifted out according to an LRU rule, and the influence on performance and service life of a flash memory due to too many times of write-back operations of the dirty data pages of the data buffer area is reduced under the premise of ensuring a hit rate.
Owner:XI AN JIAOTONG UNIV
A buffer management method for nand flash memory
The invention discloses a buffer management method for NAND flash memory, which divides the database buffer into a cold and clean linked list, a cold and dirty linked list and a mixed linked list, and the cold and clean linked list, the cold and dirty linked list and the mixed linked list are numbered according to the overall access sequence; in the whole Logically, the buffer is regarded as a singly linked list organized in order of access, and the concept of time window is proposed to cover the data pages accessed in the most recent period; Priority order, check whether the data page pointed to by the tail of the linked list is within the time window; if it is, then find the next linked list; if not, replace it directly. The present invention obtains a higher hit rate while reducing the number of flash write operations, thereby obtaining greater cache benefits and improving the overall performance of the storage system.
Owner:XI AN JIAOTONG UNIV
HEVC intra-frame angle mode selection method, device and equipment and readable storage medium
ActiveCN111800642AImprove encoding speedReduce coding timeInternal combustion piston enginesDigital video signal modificationAlgorithmVideo encoding
The invention belongs to the field of video coding, and discloses an HEVC intra-frame angle mode selection method, device and equipment and a readable storage medium, and the HEVC intra-frame angle mode selection method comprises the steps: obtaining a learning video frame image, and dividing the learning video frame image into a plurality of PU images; constructing a deep convolutional neural network; and learning and predicting the optimal angle mode of the current PU image from the PU image to obtain a deep convolutional neural network prediction model, embedding the deep convolutional neural network prediction model into an original HEVC coding process, and directly obtaining n mode candidate lists of an optimal angle mode through the deep convolutional neural network prediction modelto replace 35 angle modes during video frame image coding. According to the method, the deep convolutional neural network is introduced into HEVC video coding, the problem of PU angle mode selection suitable for being solved is learned from an original input video frame image, the video coding quality can be ensured, and the problem of long time in the video coding process is well solved.
Owner:中实燃气发展(西安)有限公司
Corrosion-resistant flat bulb steel used in cargo oil tank of oil tanker and smelting technology thereof
The invention relates to a corrosion-resistant flat bulb steel used in the cargo oil tank of an oil tanker and a smelting technology thereof. The C, Si, Mn, and Alt contents of the flat bulb steel are all controlled according to the classification society standards, and other elements are strictly controlled in a designed range. The steel can satisfy the classification society requirements, and can be used in the ship-making industry without authentication. The steel can be used in the cargo oil tank of an oil tanker without being painted, has a protective effect and a corrosion-resistant effect, can reduce the maintenance cost, and prolongs the service life of ship body.
Owner:NANJING IRON & STEEL CO LTD
Method and system for saving PostgresSQL shared memory
ActiveCN104809152AGuaranteed hit rateAvoid great wasteSpecial data processing applicationsMemory sharingData reconstruction
The invention provides a method for saving a PostgresSQL shared memory. The method comprises the steps of tracking and counting the times of updating and searching a table; if the times of updating and searching meet the set condition, triggering data reconstruction; reconstructing the row of the selected PK to a continuous data block; on the basis of 100000 records, 1000 8K data blocks are supposed to be used, and 1000 data are supposed to be accessed often, the method is that the 1000 records are stored in the continuous data block, and 10 8K data blocks are only needed, so that the 80K shared memory is needed, and as a result, the accuracy rate of the data access in the share area of the memory can be ensured, and the shared memory can be avoided large waste.
Owner:SHANGHAI TAIYU INFORMATION TECH
Excavator track steel BG45MnCrB and preparation method thereof
InactiveCN110904388AReduce purityGuaranteed uniformityProcess efficiency improvementExcavatorContinuous rolling
The invention belongs to the technical field of steel manufacturing and relates to excavator track steel BG45MnCrB and a preparation method thereof. The excavator track steel BG45MnCrB is produced byadopting a 180t converter+LF+RH+350*470 rectangular blank+ 800 continuous rolling process, the high-density and high-purity excavator track steel smelting technology is achieved, and the steel purityis effectively controlled.
Owner:BENGANG STEEL PLATES
Machine gun shooting door design method and system based on shooting scattering
PendingCN112485804AGuaranteed hit rateImprove shooting accuracyControl using feedbackElectromagnetic wave reradiationLaser rangingTarget surface
The invention discloses a machine gun shooting door design method and system based on shooting scattering, and the method comprises the steps: carrying out the frame selection of a target through a fire control observation and aiming system after the target is found, and enabling the target to serve as a target tracking frame; after a tracking target is determined, pulling the target to an observing and aiming center, and establishing a rectangular coordinate system with the target center as an original point; adjusting the target tracking frame to enable the edge of the target image to coincide with the edge of the target tracking frame so as to correct the size of the target tracking frame; performing laser ranging on the target, calculating the size and position of the shooting door according to the distance information, and displaying the shooting door in a display control terminal picture through imaging conversion; determining whether the shooting door is located in the target surface or not, if the shooting door is not located in the target surface, adjusting the pitch angle and the azimuth angle of the machine gun to enable the shooting door to enter the target surface, andmeanwhile imaging the target in the pitch direction in the center of a view field; and monitoring the state of a firing button, judging whether a firing condition is met or not when a shooter pressesdown the firing button, and controlling the machine gun to shoot based on the judgment result.
Owner:WUHAN GUIDE INFRARED CO LTD
Periphery searching method and device of points of interest
ActiveCN102176206BGuaranteed hit rateImprove hit rateInstruments for road network navigationSpecial data processing applicationsAlgorithmUser input
Owner:SHENZHEN TRANSSION HLDG CO LTD
Cache replacement method and device based on energy consumption characteristics of MLC STT-RAM
ActiveCN112395221AReduce write-back energy consumptionGuaranteed forecast accuracyMemory architecture accessing/allocationEnergy efficient computingEngineeringComputer hardware
The invention discloses a cache replacement method and device based on energy consumption characteristics of an MLC STR-RAM, and belongs to the technical field of computer storage, the MLC STR-RAM isused as a system main memory, the method comprises the following steps: when cache replacement occurs in a final-stage cache, respectively calculating N indexes of each cache block in the final-stagecache according to N preset cache replacement algorithms, respectively recording the indexes as a first index, a second index,..., and an Nth index of the corresponding cache block, respectively estimating write-back energy consumption generated by refreshing the data in each cache block back to the main memory, and taking the estimated write-back energy consumption as an (N + 1) th index of the corresponding cache block; comprehensively judging the N + 1 indexes of each cache block to select the eliminated cache block as a target cache block; wherein N is an integer greater than or equal to 1; in the N cache replacement algorithms, each cache replacement algorithm selects an eliminated cache block according to a single index, and the indexes of different cache replacement algorithms are different. According to the method, the write-back energy consumption of the MLC STT-RAM main memory can be effectively reduced.
Owner:HUAZHONG UNIV OF SCI & TECH
Content-centric multi-hop cellular network routing method and device
ActiveCN104093181BReduce consumptionImprove resource utilizationPower managementHigh level techniquesElectricityContent Identifier
The embodiment of the invention provides a content central multi-hop cellular network routing method and device. The method comprises the steps that a first node broadcasts content identifiers to nodes in the i-hop range of the first node, and therefore a second node in the i-hop range of the first node determines first routing information of a forwarded interest package, and a first directory node broadcasts content identifiers and a first directory node identifier to a second directory node and nodes within the coverage range of the first directory node. According to the method, forwarding nodes which are located in the same area with the position of target content are determined through the position of the target content, a forwarding node forwards the interest package in the direction of the position of the target content, and compared with the mode that the nodes inform all nodes in the network of cache content, consumption of wireless spectrum resources in the network is reduced, consumption of electricity in the nodes is reduced, the network resource utilization rate is improved, and the survival time of the network nodes is prolonged.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Page resource acquisition method and device, electronic equipment and storage medium
PendingCN114064996AImprove acquisition hit rateGuarantee the hit rateWeb data indexingSpecial data processing applicationsComputer hardwareEngineering
The invention relates to a page resource acquisition method and device, electronic equipment and a storage medium, and relates to the technical field of information. The method comprises the steps that: a uniform resource locator URL of a client page is obtained, a packet identifier of an offline packet where a target resource is located is determined by analyzing the URL, and the target resource is the resource needed when the client page is loaded; according to the URL, a preset storage path of the target resource in the offline packet indicated by the packet identifier is generated; when the target resource is not obtained according to the preset storage path, a configuration file corresponding to the offline packet is obtained, the configuration file is used for recording storage path information corresponding to the preset storage path, and the storage path information is used for indicating an actual storage path of the target resource of the corresponding preset storage path in the offline packet; storage path information corresponding to the preset storage path is obtained from the configuration file; and the target resource is obtained from the offline packet according to the actual storage path indicated by the storage path information. According to the invention, the page loading speed is improved.
Owner:BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
An input method error correction method and device
ActiveCN106886294BEffective error correctionGuaranteed reliabilityInput/output processes for data processingAlgorithmEngineering
The invention provides an error correction method and apparatus for an input method. The error correction method for the input method comprises the steps of receiving an input first coded character string, and marking a coded character with touch force outside a current set touch force range during input in the first coded character string; deleting the marked coded character in the first coded character string and generating a second coded character string; determining candidate entries corresponding to the first coded character string; determining candidate entries corresponding to the second coded character string; and sorting the candidate entries according to a set rule and performing display. Through the error correction method for the input method, provided by an embodiment of the invention, the reliability of the candidate entries pushed to a user can be ensured.
Owner:BEIJING SOGOU TECHNOLOGY DEVELOPMENT CO LTD
Cache updating method based on node displacement and LFU record and network
The application provides a cache updating method based on node displacement and LFU records and a network. A popular content cache updating method suitable for a mobile network, a communication device and the network are used to partially update the popular contents cached in a node according to the displacement of the node in the network in combination with an LFU cache updating method. By adopting the cache updating method provided by the application, the data traffic consumed by updating the cache can be reduced; aiming at the obvious difference of the popular contents in different regions of the mobile network, the node displacement is taken into account when performing cache updates; particularly, in consideration of the own limited resources of the node, by adopting the method provided by the application, a content value model can be established and the cache can be real-timely updated by only using the location information that can be easily acquired by the node and the content request, time and other information received by the node in combination with the LFU record, and the validity of the stored data in the node cache can be improved without generating an additional calculation load.
Owner:宿州学院
CPU affinity-based virtual CPU dynamic binding method
InactiveCN101976201BImprove execution efficiencyGuaranteed hit rateMultiprogramming arrangementsSoftware simulation/interpretation/emulationOperational systemOperating system
The invention discloses a CPU affinity-based virtual CPU dynamic binding method under a multi-core platform. Two modules, namely a guest operating system CPU affinity perception engine and a virtual CPU dynamic binder are used in the method. The guest operating system CPU affinity perception engine acquires CPU affinity information of a process to be executed from Guest OS, and provides the information for the virtual CPU dynamic binder by adopting quantified VAC (Value of Affinity Coefficient) CPU affinity coefficient value; and the virtual CPU dynamic binder module executes the corresponding strategy through the CPU affinity information provided by the guest operating system CPU affinity perception engine to realize dynamic binding of a virtual CPU.
Owner:BEIHANG UNIV
A robot with functions of catching, releasing and kicking a ball
The invention discloses a robot with functions of catching, releasing and kicking a ball, relates to the technical field of robots, and comprises a ball catching device, a ball releasing device, a ball kicking device and an omnidirectional mobile platform based on a steering wheel; the ball catching device Hanging the net to catch the ball, cooperate with the gas spring to reduce the weight of the whole device and ease the impact force when catching the ball, adjust the inclination angle of the ball by adjusting the installation position of the movable end of the gas spring; the cylinder is connected with the protective baffle, The front cylinder is in a retracted state and is ready to catch the ball. When the ball is received, it is stretched out, which can prevent the ball from popping up and the robot from throwing the ball when it is moving at high speed. The kicking device is driven by a high-speed rodless cylinder, and the linear motion of the rodless cylinder is cleverly converted into the circular motion of the kicking rod through the rack and pinion mechanism, so as to execute the kicking action. The mobile platform includes a steering wheel train, which is characterized by the ability to complete a given curved motion at a very high speed so as to dynamically cooperate with other mechanisms to perform corresponding tasks.
Owner:江苏集萃复合材料装备研究所有限公司
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com