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85 results about "Level mapping" patented technology
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Hybrid 2-Level Mapping Tables for Hybrid Block- and Page-Mode Flash-Memory System
InactiveUS20090193184A1Memory architecture accessing/allocationMemory adressing/allocation/relocationVirtual fieldFrequency counter
A hybrid solid-state disk (SSD) has multi-level-cell (MLC) or single-level-cell (SLC) flash memory, or both. SLC flash may be emulated by MLC that uses fewer cell states. A NVM controller converts logical block addresses (LBA) to physical block addresses (PBA). Most data is block-mapped and stored in MLC flash, but some critical or high-frequency data is page-mapped to reduce block-relocation copying. A hybrid mapping table has a first-level and a second level. Only the first level is used for block-mapped data, but both levels are used for page-mapped data. The first level contains a block-page bit that indicates if the data is block-mapped or page-mapped. A PBA field in the first-level table maps block-mapped data, while a virtual field points to the second-level table where the PBA and page number is stored for page-mapped data. Page-mapped data is identified by a frequency counter or sector count. SRAM space is reduced.
Owner:SUPER TALENT ELECTRONICS
Method and apparatus for in-situ detection and isolation of aircraft engine faults
A method for performing a fault estimation based on residuals of detected signals includes determining an operating regime based on a plurality of parameters, extracting predetermined noise standard deviations of the residuals corresponding to the operating regime and scaling the residuals, calculating a magnitude of a measurement vector of the scaled residuals and comparing the magnitude to a decision threshold value, extracting an average, or mean direction and a fault level mapping for each of a plurality of fault types, based on the operating regime, calculating a projection of the measurement vector onto the average direction of each of the plurality of fault types, determining a fault type based on which projection is maximum, and mapping the projection to a continuous-valued fault level using a lookup table.
Owner:GENERAL ELECTRIC CO
Method and device for processing and presenting medical images
InactiveUS20090257657A1Easy to checkShorten the timeImage enhancementImage analysisDisplay deviceMagnification
The present invention relates to a method for processing and presenting at least a first image (102) and a second image (103), these images being digital medical images. A first step in the method is performing image registration between the first image (102) and the second image (103) to generate a pixel-level mapping between both images. The registration takes into account a region-level correspondence between the first image (102) and the second image (103) A second step is presenting the first image (102) and the second image (103) simultaneously on a display (103). A third step is presenting a first magnification (104) of a region of interest (106) in the first image (102) and a second magnification (105) of a corresponding region (108) in the second image (103). The corresponding region (108) in the second image (103) being determined based on the pixel-level mapping.
Owner:IBBT +3
Scalable algorithms for mapping-based XML transformation
InactiveUS20080235260A1Data processing applicationsDigital data processing detailsSchema mappingStreaming XML
A computer-implemented method for use with an extensible markup language (XML) document includes inputting a high-level mapping specification for a schema mapping; and generating a target XML document based on the mapping. The method may perform schema mapping-based XML transformation as a three-phase process comprising tuple extraction, XML-fragment generation, and data merging. The tuple extraction phase may be adapted to handle streamed XML data (as well as stored / indexed XML data). The data merging phase may use a hybrid method that can dynamically switch between main memory-based and disk-based algorithms based on the size of the XML data to be merged.
Owner:IBM CORP
Distributed storage system and data read-write method for same
ActiveCN105242881AReduce storage space usageSave bandwidthInput/output to record carriersComputer moduleService module
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.
Owner:深圳创新科软件技术有限公司 +1
Service quality monitoring platform and method of Internet of things based on big data
ActiveCN108848515ARealize active monitoring and early warningImprove user perceptionTransmissionWireless communicationInformation securityService department
The invention discloses a service quality monitoring platform and method of Internet of things based on big data. The monitoring platform comprises a data acquisition unit, a data processing unit, a service quality monitoring unit, an abnormality early warning unit and abnormality locating unit, wherein the data processing unit is used for establishing a two-level mapping relationship between a KPI and an abnormal cause; the service quality monitoring unit is used for calculating the dynamic threshold value of the key KPI of each cell, and generating an industry number key KPI report with hourgranularity; the abnormality early warning unit is used for comparing KPI data in the industry number key KPI report with a dynamic threshold value corresponding to a monitoring period, and outputting an abnormal user number; and the abnormality locating unit is used for locating the cause of KPI abnormality according to the confidence level of the mapping relationship. Through adoption of the service quality monitoring platform and method, real-time detection and location of service quality problems can be realized, and a service department is supported to grasp the service volume and activity of an Internet of Things card in time. Moreover, the information security risk is detected and evaluated in order to perform effective intervention immediately.
Owner:WUHAN HONGXIN TECH SERVICE CO LTD
Method and apparatus for in-situ detection and isolation of aircraft engine faults
ActiveUS20060142976A1Analogue computers for vehiclesMachine part testingDecision thresholdLookup table
A method for performing a fault estimation based on residuals of detected signals includes: determining an operating regime based on a plurality of parameters; extracting predetermined noise standard deviations of the residuals corresponding to said operating regime and scaling the residuals; calculating a magnitude of a measurement vector of the scaled residuals and comparing the magnitude to a decision threshold value; extracting a mean direction and a fault level mapping for each of a plurality of fault types, based on the operating regime; calculating a projection of the measurement vector onto the mean direction of each of the plurality of fault types; determining a fault type based on which projection is maximum; and mapping the projection to a continuous-valued fault level using a lookup table.
Owner:GENERAL ELECTRIC CO
Multi-level mapping of tape error recoveries
Method and apparatus are provided for presenting various levels of detail about successful error recoveries and background hardware optimizations during the recording and retrieval of digital information on magnetic tape. A first, Band Summary, report presents a high-level summary of recovery methods by data band and wrap. A second, Detail Summary, report presents a mid-level summary of recovery methods by track and longitudinal position (LPOS) region within one wrap of a band on the tape. A third, ERP Summary, report presents a low-level summary of errors and specific recovery methods and optimizations by LPOS region within each wrap. Such “telescoping” views permit pattern analysis to be performed at different resolutions. Thus, correlations of possible interactions between hardware and microcode activities that result in changes of the nominal operating point of the drive may be identified. Possible failure patterns may also be identified and fed back to design personnel and incorporated in microcode design changes for more effective ERP.
Owner:GOOGLE LLC
Multi-level mapping of tape error recoveries
Method and apparatus are provided for presenting various levels of detail about successful error recoveries and background hardware optimizations during the recording and retrieval of digital information on magnetic tape. A first, Band Summary, report presents a high-level summary of recovery methods by data band and wrap. A second, Detail Summary, report presents a mid-level summary of recovery methods by track and longitudinal position (LPOS) region within one wrap of a band on the tape. A third, ERP Summary, report presents a low-level summary of errors and specific recovery methods and optimizations by LPOS region within each wrap. Such “telescoping” views permit pattern analysis to be performed at different resolutions. Thus, correlations of possible interactions between hardware and microcode activities that result in changes of the nominal operating point of the drive may be identified. Possible failure patterns may also be identified and fed back to design personnel and incorporated in microcode design changes for more effective ERP.
Owner:GOOGLE LLC
Method for power-down protection of storage system, storage controller and electronic equipment
ActiveCN106502928AIncrease costReduce capacityMemory architecture accessing/allocationMemory loss protectionElectricityControl store
The invention discloses a method for power-down protection of a storage system, a storage controller and electronic equipment, relates to the technical field of communications, and can solve the problem that the storage system needs to spend a lot of time on recovering mapping relations. The method comprises the steps that when previous disconnection of a CPU belongs to abnormal disconnection, the storage controller determines index information in second-level and third-level mapping lists level by level according to index information of a first-level mapping list and reads mapping relations of all the data in a log cache area, as well as mapping relations of all the data in a log area; the acquired mapping relations are sent to the CPU; and when the mapping relation of at least one piece of data in the log cache area or the mapping relation in the log area is different from the mapping relation in the third-level mapping list, the storage controller will replace the mapping relation in the third-level mapping list, update the index information of the second-level and first-level mapping lists level by level and store the updated mapping relation which is changed before and after updating in the second-level mapping list to a DRAM. The method disclosed by the invention is applicable to the storage system.
Owner:HUAWEI TECH CO LTD
Method and electronic equipment for forming, updating and recovering mapping table
ActiveCN105224478AImprove securityMemory loss protectionMemory architecture accessing/allocationSolid-state storageRestoration method
The invention discloses a method and a kind of electronic equipment for forming, updating and recovering a mapping table, wherein the mapping table comprises a first-level mapping table and a second-level mapping table, and the formation method comprises that all the logic pages from a host are mapped into physical pages of an NAND on a solid-state storage through page-level mapping to form the second-level mapping table; and a first physical address is acquired, the first physical address is a physical storage address of a first block in the second-level mapping table, the first physical address and corresponding first identification information form a mapping relation in a mapping unit of the first-level mapping table, and the first identification information is identification information of the first block.
Owner:SHENZHEN YILIAN INFORMATION SYST CO LTD
Flash Translation Layer (FTL) address mapping method and device
ActiveCN106326134AThe mapping process is simpleThe implementation process is simpleMemory architecture accessing/allocationMemory adressing/allocation/relocationBlock levelComputer science
The embodiment of the invention discloses a Flash Translation Layer (FTL) address mapping method and device, relates to the technical field of communication, and can solve the problem that a page mapping method in the prior art is complex in implementation process, and thus a reading-writing process is high in delay. The method provided by the invention comprises the steps of dividing a logic address space into a plurality of logic address fields; building a virtual address space; building a page-level mapping table between each logic address field and a virtual address field corresponding to the logic address field, and a block-level mapping table between a virtual block in each virtual address field and a physical block in a physical address space mapped with the virtual block in the virtual address field; when a mainframe reads or writes data, a target logic page address corresponding to the data read or written by the mainframe is acquired; determining a target virtual page address according to the target logic page address and the page-level mapping table; and determining a target physical page address according to the target virtual page address and the block-level mapping table. The method and device provided by the invention are applicable to FTL address mapping.
Owner:HUAWEI TECH CO LTD +1
Two-layer and three-layer flash-memory devices, intelligent storage switch and two-layer and three-layer controllers
Suitable for the memory field, the invention provides three-layer flash-memory devices, an intelligent storage switch and three-layer controllers. A solid-state hard disk is provided with the intelligent storage switch for recycling the waste and utilizing the flash memory storage deleted by deletion from the segment data capacity. The extra storage beyond the segment data capacity is accessed in an undivided scattered data manner. When more bad blocks appear over time, the segment date capacity is reduced. A first-level mapping graph stores the segment data and scattered data capacity of all flash-memory channels and maps the scattered data and the segment data. Each flash-memory channel is provided with a NVMD, which is provided with a controller of relatively low level, wherein the controller converts the LBA to the PBA used for accessing a flash memory in the NVMD. Each NVMD performs the wear balance and the bad block remapping. The NVMD enables to recycle source flash-memory blocks and shadow flash-memory blocks. A two-level intelligent storage switch can start a three-level controller.
Owner:INFOMICRO ELECTRONICS (SHENZHEN) CO LTD
Method and device for conducting data reading and writing on storage device
ActiveCN104090730AReduce the number of erasuresExtended service lifeInput/output to record carriersMemory loss protectionData needsSelection system
Owner:FEITIAN TECHNOLOGIES
HDR (High Dynamic Range) video generation method applicable to LDR (Low Dynamic Range) video
ActiveCN106506983AReal-time conversionClear detailsTelevision system detailsColor television detailsMean squareCurve fitting
The invention discloses an HDR (High Dynamic Range) video generation method applicable to an LDR (Low Dynamic Range) video. The HDR video generation method comprises the following steps of: (1), converting a normal exposure image into a pseudo-exposure image having different brightness, and obtaining an HDR image of a first-frame LDR image for the LDR video; (2), inputting a vector x and a vector y, determining advantages and disadvantages of a fitted curve by judging the size of a mean-square error so as to find out a fitted curve having the minimum MSE, and correcting the generated fitted curve so as to find out an optimal fitted curve used as a curve fitting result between the LDR image and the HDR image; and (3), performing corresponding pixel-level mapping of each frame of the input LDR video by utilizing the optimal fitted curve so as to obtain the final HDR video sequence. Compared with the prior art, the complexity of the HDR video generation method disclosed by the invention is low; real-time conversion from the LDR video to the HDR video can be realized better; colour information of the generated HDR video relatively accords with human eye visual features; details are relatively clear; and included information are relatively enriched.
Owner:TIANJIN UNIV
Memory address translation method for flash storage system
InactiveUS20140052899A1Shorten the timeMemory architecture accessing/allocationMemory adressing/allocation/relocationMemory addressPhysical address
A memory address translation method for flash storage system is disclosed. There are two level mapping tables to reduce overhead of mapping table management. In level-one mapping table, each entry contains two kinds of information, which one is the validation of this entry, called Valid Mark and the other is the location of level-two mapping. The level-one mapping table is always located on RAM, and never saved into flash memory. In level-two mapping table, each entry contains two kinds of information, which one is the validation of this entry and the other is the physical location of data in flash memory. The physical addresses of both data and level-two mapping table are dynamically determined. Level-two mapping table is loaded to RAM when it is needed to reference, and is saved into flash memory periodically if the content is updated.
Owner:STORART TECHSHENZHEN CO LTD
Image brightness adjustment method and device, storage medium and terminal
ActiveCN109685746AImprove applicabilityGood effectImage enhancementPixel brightnessComputer terminal
The embodiment of the invention discloses an image brightness adjustment method and device, a storage medium and a terminal. The method comprises the steps of obtaining a to-be-processed image; Performing scene recognition on the image, and determining the scene type of the image; Inputting the image into a brightness level mapping model corresponding to the scene type; Determining a brightness level corresponding to the image according to an output result of a brightness level mapping model; And carrying out brightness adjustment on the image based on the scene category and the brightness level to generate a brightness-adjusted target image. By adopting the technical scheme, the image brightness is adaptively adjusted according to the scene of the image and the brightness level of the image, a better effect can be achieved on the images with different scenes and different brightness levels, and the applicability of image brightness adjustment is improved. Meanwhile, the brightness level of the image can be simply, rapidly and accurately determined based on the pre-trained brightness level mapping model, and the image brightness adjustment efficiency is improved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Mapping table forming and loading methods and electronic device
ActiveCN105243025AShorten the timeImprove experienceMemory adressing/allocation/relocationMemory addressPhysical address
The invention discloses mapping table forming and loading methods and an electronic device. The forming method comprises: mapping a logic page from a host into a physical page of NAND on a solid state memory by using page-level mapping to form a secondary mapping table; obtaining a first physical address, wherein the first physical address is a physical memory address of a first block in the secondary mapping table; and forming a mapping relationship between the first physical address and corresponding first identification information in a mapping unit of a primary mapping table, wherein the first identification information is identification information of the first block, each mapping unit in the primary mapping table contains Q flag bits, and the flag bits are used for indicating historical access information of the block.
Owner:SHENZHEN YILIAN INFORMATION SYST CO LTD
Method and system for information retrieval
ActiveCN103365910AImprove accuracyRich left key entrySpecial data processing applicationsThe InternetRetrieval result
The invention discloses a method and system for information retrieval. The method for information retrieval comprises the steps of (1) carrying out the quadratic mapping process on a basic QA word list on the basis of extension of a query to generate a second-level mapped QA word list, wherein the basic QA word list comprises mapping from a high-frequency query to a keyword, first-level mapping in the second-level mapped QA word list is mapping from an extended query to the high-frequency query, and second-level mapping in the second-level mapped QA word list is mapping from the high-frequency query to the keyword; (2) carrying out searching on the second-level mapped QA word list according to an obtained query in an information retrieval request to obtain a keyword hit by the query, extracting posted internet information corresponding to the keyword, and using the posted internet information as a retrieval result. According to the method and system for information retrieval, the coverage rate of information retrieval results to the posted internet information can be improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD
GPS equipped devices that utilize geographical navigation bundles
ActiveUS8374777B2RelievingInstruments for road network navigationRoad vehicles traffic controlManifest fileData set
A method for providing and utilizing navigation data can include identifying a grid that includes a plurality of geographical regions. Each geographical region can have an associated navigation data set which includes street level mapping data. Linking references for each geographical region can be defined. Geographical navigation bundles can be identified that conform to an OSGi compliant framework. Each bundle can correspond to one of the geographical regions and can include a navigation data set and a manifest file. The manifest file can include a version, date, and the linking references. A GPS equipped device can dynamically install and activate the geographical navigation bundles. The GPS equipped device can perform at least one navigation process based upon the navigation data set. The GPS device can predict when new navigation data is needed and can automatically acquire suitable geographical navigation bundles in response to these predictions.
Owner:AIRBNB
GPS equipped devices that utilize geographical navigation bundles
ActiveUS20070143017A1RelievingInstruments for road network navigationRoad vehicles traffic controlManifest fileData set
A method for providing and utilizing navigation data can include identifying a grid that includes a plurality of geographical regions. Each geographical region can have an associated navigation data set which includes street level mapping data. Linking references for each geographical region can be defined. Geographical navigation bundles can be identified that conform to an OSGi compliant framework. Each bundle can correspond to one of the geographical regions and can include a navigation data set and a manifest file. The manifest file can include a version, date, and the linking references. A GPS equipped device can dynamically install and activate the geographical navigation bundles. The GPS equipped device can perform at least one navigation process based upon the navigation data set. The GPS device can predict when new navigation data is needed and can automatically acquire suitable geographical navigation bundles in response to these predictions.
Owner:AIRBNB
A method for realizing Chinese text classification and related equipment
InactiveCN109446333AFully extractedImprove accuracyText database clustering/classificationSemantic tool creationFeature vectorText categorization
The embodiment of the invention relates to the field of text classification, and discloses a method for realizing Chinese text classification and related equipment, and the method comprises the following steps of carrying out semantic expansion on a Chinese short text by using a Chinese pinyin sequence, and establishing a character mapping matrix and a word-level mapping matrix by using a word vector; carrying out convolution and downsampling operation on the character mapping matrix and the word-level mapping matrix to automatically extract a local feature vector of the Chinese short text; and after the local feature vectors are connected in series and fused, adding the local feature vectors into a normalized Softmax classifier to realize classification of the Chinese short text. Thus, based on the convolutional neural network model with the character mapping matrix and the word-level mapping matrix as joint input, the defect that the standard convolutional neural network is single indimension can be effectively overcome, the context information characteristics of the Chinese short text are extracted more sufficiently, and a classification result with higher accuracy is obtained.
Owner:深兰人工智能芯片研究院(江苏)有限公司
Merging method based on non-aligned update data in solid-state disk cache system
ActiveCN107589908AReduce lossImprove write request processing efficiencyInput/output to record carriersComputer moduleRe engineering
The invention discloses a merging method based on non-aligned update data in a solid-state disk cache system. Based on a FTL page level mapping module, a page level mapping module structure is redesigned, a merging page mapping module structure is added, an effect of storing the non-aligned update data in the cache system, which is from a plurality of logic blocks, into a solid-state disk after being merged is achieved, and the maximum utilization rate of a physical available storage space is ensured; meanwhile, aiming at write update read loss brought in by a non-aligned update operation, performance loss of an additional read operation request, which is brought in by a write update operation, is optimized; and in the other aspect, due to a case that by merged writing, actual writing times of the solid-state disk are sufficiently reduced, the internal available storage space is utilized to the greatest extent, so that a trigger rate of an internal garbage recovery operation is reduced, thereby indirectly prolonging the service life of the solid-state disk.
Owner:JINAN UNIVERSITY
Bit-level memory controller and a method thereof
ActiveUS20130151752A1Error detection/correctionMemory adressing/allocation/relocationMemory controllerOperating system
Owner:YEESTOR MICROELECTRONICS CO LTD
Dynamic two-level cache flash translation layer address mapping method based on page-level mapping
InactiveCN109739780ACache hit rate guaranteeReduce revisionsMemory systemsParallel computingCache hit rate
The invention provides a dynamic two-level cache flash memory translation layer address mapping method based on page-level mapping, and solves the problems that the current page-level address mappingcannot fully utilize sequential I / O locality and the I / O performance is reduced when a large number of random I / Os exist. According to the method, time locality and space locality of sequential I / O are utilized; a first-level cache L1Cache and a second-level cache L2Cache are set respectively, different cache management strategies are adopted on the two-level cache, the first-level cache L1Cache is used for caching a single address mapping item, and the second-level cache L2Cache is used for caching the whole mapping page; detecting a certain number of current I / O requests on the second-levelcache by adopting a spatial locality detection method, and extracting a corresponding mapping page into the second-level cache L2Cache if detecting that the current I / O requests have relatively high spatial locality; and meanwhile, the first-level cache L1 Cache dynamically adjusts the size of the first-level cache according to the cache hit rate, so that the I / O performance in a random I / O mode is ensured.
Owner:BEIHANG UNIV
Multi-queue based scheduling method and system
The invention discloses a multi-queue based scheduling method, which comprises the following steps: according to a multi-level stream classification strategy, performing circuit level mapping, user level mapping and / or service level mapping on a data packet, and putting the data packet in a mapping queue; and performing the scheduling in the circuit level, the user level and / or the service level according to a multi-queue scheduling algorithm. The invention also discloses a multi-queue based scheduling system, which comprises a multi-level strategy mapping module, a queue management module and a multi-level scheduling module, wherein the multi-level strategy mapping module is used for performing the circuit level mapping, the user level mapping and / or the service level mapping according to the multi-level stream classification strategy; the queue management module is connected with the multi-level strategy mapping module, and is used for putting the data packet in the mapping queue; and the multi-level scheduling module is connected with the queue management module, and is used for performing the scheduling in the circuit level, the user level and / or the service level according tothe multi-queue scheduling algorithm. Therefore, the method and the system can schedule data in the circuit level, the user level and the service level, realize complex traffic scheduling, and meet the increasingly complex QoS requirement.
Owner:ZTE CORP
Method and device for avoiding repeated storage of content in distributed cache cooperation
ActiveCN104901996AReduce traffic between domainsReduce trafficTransmissionTraffic capacityDistributed cache
The invention discloses a method for avoiding repeated storage of content in distributed cache cooperation. The method comprises the steps as follows: using a binary identifying method to perform binary identification on content data blocks; establishing two-level logic mapping tables based on the binary identification of the content data blocks to organize caching content, and performing cache cooperation on the caching content based on distributed Hash operation; receiving a request for a certain content data block from the external by an edge content router, forwarding the request to an internal node which is in charge of storing the content via two-stage routing, transmitting the data block with the node which is in charge of the corresponding content data block to the edge content router, and updating cache replacement control state information of corresponding items of the two-level mapping tables; and receiving a certain data block from the external by the edge content router, forwarding the data block to an internal node which is in charge of storing the content through two-stage routing, and establishing corresponding two-level mapping relationships in the routing forwarding process.. The method of the invention could avoid repeated storage of the content, thereby reducing network flow and improving user experience.
Owner:NANJING NORMAL UNIVERSITY
Power load abnormal data recognition and modification method based on nonparametric regression analysis
The invention discloses a power load abnormal data recognition and modification method based on nonparametric regression analysis. The method comprises the steps of 1, performing power utilization mode classification on power load data to obtain a common power utilization mode data set and a special power utilization mode data set; 2, extracting a load feature value at each moment from the obtained common power utilization mode data set by adopting a nonparametric regression analysis method; 3, forming an abnormal data field by using the extracted load feature values according to the selected confidence level; 4, performing load abnormal data recognition on load data in the common power utilization mode data set and the special power utilization mode data set by using the abnormal data field formed in step 3; and 5, modifying the recognized load abnormal value by using an improved introduced load level mapping relation and a weighted mean method considering the influence of feature values. The method can recognize and modify power load abnormal data including big industrial power load data, and simultaneously can overcome the defect of the load abnormal data recognition and modification theory on the aspect of power load data processing.
Owner:STATE GRID SHAANXI ELECTRIC POWER RES INST +1
Display panel driving device and driving method thereof
InactiveUS20080024525A1Low costReduce circuit complexityCathode-ray tube indicatorsInput/output processes for data processingComputer sciencePrimary color
Owner:CHUNGHWA PICTURE TUBES LTD
Method and system for improving pitch sensing ability of artificial cochlea
ActiveCN104307100AImproved pitch perceptionEar treatmentArtificial respirationTime domainEngineering
The invention is suitable for the field of medical apparatuses and discloses a method and a system for improving pitch sensing ability of an artificial cochlea. The method for improving the pitch sensing ability of the artificial cochlea includes a base frequency (F0) processing process and a loudness regulating process, wherein the base frequency (F0) processing process includes that extracting a real-time base frequency (F0) from a gathered sound signal, substituting the extracted base frequency (F0) into a pre-generated 'F0-sound level mapping function S (F0)', calculating to obtain an S(F0) function value, substituting the S(F0) function value into a formula, and calculating to obtain a gain function value; the loudness regulating process includes that multiplying the gain function value with a signal to be regulated so as to regulate the loudness of a time domain sound signal. The method and system for improving the pitch sensing ability of the artificial cochlea are capable of improving the pitch sensing ability of an artificial cochlea user in the aspects of melody, pronunciation and intonation, Chinese tone and the like through processing the base frequency (F0) and using the base frequency for the loudness regulation when the pitch sensing ability of the user is low.
Owner:SHENZHEN UNIV
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