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104results about How to "Reduce CPU load" patented technology
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File sharing system with data mirroring by storage systems
InactiveUS7281032B2Reduces CPU loadBalance i/o loadData processing applicationsMultiple digital computer combinationsFile sharing systemClustered file system
A system for optimizing data access is provided. The system includes a cluster file system server, a number of cluster file system clients, and a storage system. The storage system includes disk drives organized as paired master disk drive and one or more mirrored disk drives having copies of the data stored on the master disk drive. When a file is needed, the server determines which pair has the needed file, and then determines which disk drive within the pair should be accessed. The determination is made to balance the access load within the pair, and can select to retrieve the file from the drive which is least frequently accessed. The identification of the disk drive to be accessed is then forwarded to the client thereby allowing the client to access the appropriate disk drive to retrieve the file.
Owner:HITACHI LTD
Video coding system
ActiveUS20050152451A1Reduce CPU loadReduce loadPicture reproducers using cathode ray tubesCode conversionSystem structureDigital video
Disclosed is a digital video coding system and more particularly technology capable of reducing the load of a CPU (Central Processing Unit) that controls a video coding system for implementing a digital video data compression / decompression standard such as MPEG-1, 2, 4, H.261 or H.263. In a conventional video coding system, the circuit configuration and control method of a variable-length encoder are becoming increasingly complex with the development of a video compression / decompression standard. In a conventional system structure, a complex control operation must be carried out, such that there is a problem in that the load of the CPU controlling the video coding system increases. Thus, the video coding technology is provided to reduce the load of the CPU necessary for controlling a VLC (Variable Length Coding) unit.
Owner:CS TECH CO LTD
Concentrated network equipment managing method
InactiveCN1441569ARealize managementRealize centralized managementData switching networksPrivate IPTopology information
This invention discloses a cluster management method for network equipments including the manage orders line users to assign a device as the manage equiopment from the network equipments collecting topology information within the specified hop numbers, the manage orders the line user to decide if it sets up an equipment manage cluster or equipments in the cluster and allocate every member equipment including distributing private IP address and its number, then the equipment will carry out the cluster management.
Owner:HUAWEI TECH CO LTD
Apparatus for controlling hybrid automatic repeat request (HARQ) in a mobile communication system
ActiveUS7594153B2Reduce CPU loadEnergy efficient ICTError prevention/detection by using return channelData controlPhysical layer
An apparatus for controlling a Hybrid Automatic Repeat Request (HARQ) is provided. In the apparatus, a physical layer includes a decoder for decoding a control message received over the packet data control channel, a demodulator for demodulating packet data received over the packet data channel, and a turbo decoder for decoding the demodulated packet data. A physical layer's HARQ controller determines whether to demodulate and decode the received packet data depending on a decoding result of the control message, outputs the decoded control message to the demodulator and the turbo decoder for demodulation and decoding of the received packet data, controls output of a response signal according to decoding result of the packet data, and delivers the turbo-decoded packet data to an upper layer.
Owner:SAMSUNG ELECTRONICS CO LTD
Packet relay apparatus
InactiveUS20080175240A1Reduce CPU loadSimple methodSpecial service provision for substationData switching by path configurationReachabilityProcess control
In a first-hop router, a reachability monitor monitors RP (Rendezvous-Point) reachability, and the number of times when a response time is not shorter than a predetermined time is stored in a RP management table. An RP selection process controls not to select RP whose reachability from the first-hop router is not stable, so that PIM Register transmission to an unstable RP is suppressed.
Owner:ALAXALA NETWORKS
Distributed type tone mixing system in multimedia conference
InactiveCN101252452AReduce CPU loadReduce latencySpecial service provision for substationSpecial service for subscribersVideo serverClient-side
Owner:杭州红杉赛联通讯技术有限公司
Identification and business management for network user
InactiveCN1510862ASolve multicast businessSolving Bandwidth Business ProblemsUser identity/authority verificationData switching networksBusiness managementBroadband
This invention relates to broadband access field, specially relates to a method by which can make certification to network users and carry out operational management, first build up the network analysis situs of access equipment on the access server, and register the capacity of access equipment; the access equipment sends the basic information of users to the access sever, the access server sends the certification information of users to AAA server, the AAA server confirms this certification of users has passed, sends the passing information and authorization message to the access equipment, after the access equipment receives the authorization message, completes stated action, implements the certification and operational management to users. This method can complete the control for multicast, broadband operation on the bottom layer access equipment.
Owner:HUAWEI TECH CO LTD
Method and system for recovering lost media data packet
InactiveCN101719809AImprove data transmission qualitySave bandwidthError prevention/detection by using return channelData switching networksData streamCode redundancy
Owner:深圳智衡技术有限公司
Method and system for performing data transfer with a flash storage medium
InactiveUS20140149637A1Reduce CPU loadMemory adressing/allocation/relocationInput/output processes for data processingDirect memory accessFlash memory controller
This invention discloses a method for data transfer between a host memory and a flash memory module through direct memory access (DMA), and a related data-transfer subsystem. In one embodiment, the subsystem comprises a DMA controller, a flash-memory controller, a data buffer for buffering data transferred between the DMA controller and the flash-memory controller, and a status-register group for storing a current status of the data buffer. The DMA controller and the flash-memory controller are configured such that both of them are allowed to update the current status and to detect a change of the current status during the data transfer, so that a substantial part of the data transfer's process is executed through direct interaction between the DMA controller and the flash-memory controller without involving a central processing unit. The subsystem may further comprise a command storing unit for storing command packages for execution by the flash-memory controller.
Owner:HONG KONG APPLIED SCI & TECH RES INST
Snapshot creating method and apparatus
ActiveUS7120767B2Reduces data communication amount and necessary storage capacityReduce CPU loadData processing applicationsInput/output to record carriersOperating systemDisk controller
In the storage-based snapshot creation, a block-selection specifying unit provided on a NAS processing unit specifies a block, which becomes necessary for the generation of snapshot data, to a specified-block analyzing unit within a disk apparatus. Moreover, a disk controller generates the snapshot data on the block specified as the snapshot target, while making an inquiry to the specified-block analyzing unit. This makes it possible to create the snapshot in a storage-capacity reduced manner, and to specify the snapshot creation in a partition, file, or directory unit.
Owner:RAKUTEN GRP INC
Microcomputer and motor control system provided therewith
InactiveUS20100007294A1Improve accuracyQuick conversionProgramme controlMotor/generator/converter stoppersMicrocomputerDigital data
A microcomputer which obtains a rotor position signal from a biphase signal delivered by a resolver mounted on an electric motor according to a rotation phase of a rotor relative to a stator, thereby controlling the motor based on the rotor position signal. The microcomputer includes a digital signal converter which is configured by hardware and converts the biphase signal delivered from the resolver into a digital data position signal, the digital signal converter being mounted on a single chip.
Owner:KK TOSHIBA
Information processing apparatus, controller and file reading method
InactiveUS20070136549A1Increase efficiencyHigh efficiencyMemory systemsInput/output processes for data processingMemory controllerInformation processing
In a memory, a file is stored at discontinuous page addresses. The information thereon is recorded in FAT of the memory. When an application program in a host system performs a read operation for the file, a FAT system refers to the FAT to read out page indexes of the file. Then, the page indexes are stored in a page index buffer included in a memory controller. When a DMAC outputs a read command, a page index transfer sequencer replaces an address part of this read command with the page indexes and outputs page-replaced read commands to the memory.
Owner:MEGACHIPS
Method and apparatus for capturing an image
InactiveUS20090190013A1Quality improvementLow costTelevision system detailsPrintersElectronic shutterReference image
A method for capturing an image using an image capturing module with multiple pixels configured in a 2-dimensional matrix and a focal plane electronic shutter function which sequentially slides the exposure timing by constant interval by pixel group which is a unit of predetermined number of the pixels while scanning; the method includes an image data input process for detecting shutter operation, obtaining a reference image while skipping one or more of the pixel groups by sequentially sliding the exposure timing by the constant interval, and obtaining a target image while not skipping pixel groups to be captured, a motion data detection process for calculating the motion data of the target image based on the reference image, and a distortion compensation process for compensating for distortion in the target image according to the motion data.
Owner:RPX CORP
Inverter apparatus
ActiveUS20060239047A1Low areaReducing calculation loadSingle-phase induction motor startersMotor/generator/converter stoppersTriangular waveSine wave
A CPU calculates, based on a frequency command value for driving a motor and on a state quantity of the motor, an output-voltage command value in which only the phase advances while amplitude is constant in each calculation period, without reducing the calculation period. An ASIC reflects the output-voltage command value in a triangular wave signal in a time-series order to compare with each other, and outputs a PWM signal to a switching circuit. Thus, a waveform of an output voltage is made close to a sine wave irrespective of an output frequency being high or low, and a processing load of the CPU is reduced.
Owner:MITSUBISHI ELECTRIC CORP
Hard disk recorder and information recording reproducing apparatus
InactiveUS20030215222A1Simply performedSimple processTelevision system detailsElectronic editing digitised analogue information signalsHard disk recorderReal-time computing
Owner:FUNAI ELECTRIC CO LTD
Smart jms network stack
InactiveUS20100070650A1Improve usabilitySimplified management systemDigital computer detailsTransmissionJava Message ServiceStreaming data
In a client server network, the invention provides improved message routing, useful in sending a plurality of subscriber messages from a single Server published message. The invention provides all the benefits of TCP delivery with most of the efficiency of IP multicast delivery. The invention provides for a Controller associated in the Client Server communication, where the Controller effectively routes the Server message to subscribed Clients. The invention provides efficient distribution of streaming data to one or more consumers in a way that enables easy integration in consuming applications. The invention provides means to implement a Java Message Service (JMS) distribution adapter in hardware. The invention further provides for hardware implementation of various wire protocol transforms.
Owner:METAFLUENT
Data storage method and device
InactiveCN107665093AImprove compression efficiencyReduce the load on the CPUInput/output to record carriersData compressionOperating system
The invention discloses a data storage method. The method comprises the steps that when a write data request is received, to-be-stored data corresponding to the write data request is subjected to sampling and processing to obtain sample data, information entropy of the sample data is calculated, and whether the to-be-stored data can be compressed or not can be judged according to the information entropy obtained through calculation; if it is judged that the to-be-stored data can be compressed according to the information entropy, the to-be-stored data is compressed and then written into a storage system; if it is judged that the to-be-stored data can not be compressed according to the information entropy, the to-be-stored data is written into the storage system. The invention further provides a data storage device. Accordingly, the problem that when the data is compressed and stored, due to the fact that the data compression efficiency is low and the CPU burden of the system is large,I / O delay is caused is solved.
Owner:SANGFOR TECH INC
Method of realizing sampling data stream low-delay transmission based on 10 gigabit Intel network card
ActiveCN108123894AReduce CPU loadSolve the key problems of big data transmissionProgram initiation/switchingResource allocationTimestampFrame based
The invention belongs to the field of radio and satellite navigation simulator and relates to a method of realizing sampling data stream low-delay transmission based on a 10 gigabit Intel network card. The method comprises the steps of (S1) loading a drive program and initializing the 10 gigabit Intel network card; (S2) mapping each caching node in a data caching block queue into memory space of an application program; (S3) sending time mark messages to the 10 gigabit Intel network card every 1 ms at a digital-analogue conversion device end; (S4) after reception of the time mark messages whichare sent every 1 ms is interrupted, parsing timestamp information in the time mark messages by the drive program; (S5) starting to generate sampling data at the 1 ms by the application program when the drive program sets a 1 ms time d arrival mark; (S6) obtaining caching node data based on the timestamp information; (S7) composing an Ethernet transmitting frame based on the caching node data; (S8) assigning a packet head and a packet body to two different DMA transmission descriptors, separately, configuring the DMA transmission descriptors to DMA engine register space of the 10 gigabit Intelnetwork card and starting up data transmission.
Owner:HUNAN SATELLITE NAVIGATION INFORMATION TECH CO LTD
Dual-stack BFD detection method and dual-stack BFD detection system
ActiveCN110086689AReduce in quantityReduce the load on the CPUData switching networksCommunication linkDistributed computing
The invention provides a dual-stack BFD detection method and a dual-stack BFD detection system. The system comprises a first device and a second device, and a plurality of IPV4 BFD sessions and a plurality of IPV6 BFD sessions are operated between the first device and the second device. The method comprises the steps of detecting whether one IPV4 BFD session and one IPV6 BFD session share the sameport of the first device and the same port of the second device or not, and if yes, associating the IPV4 BFD session with the IPV6 BFD session; if the two BFD sessions associated with each other areboth in the UP state, combining the messages corresponding to the two sessions, that is, sending the BFD messages packaged twice through the IPV4 protocol and the IPV6 protocol to the second device; and using the second device to decapsulate the encapsulated BFD message twice to obtain a BFD message, and then performing IPV4 BFD session processing and IPV6 BFD session processing respectively. Dueto the combining processing of the session messages, the number of the messages can be reduced to 1 / 2 of the number of the messages in the original technical scheme, so that the network congestion ona communication link can be reduced.
Owner:HANGZHOU DPTECH TECH
Linux network card driving controller of dual-network redundant Ethernet controller
The invention discloses a Linux network card driving controller of a dual-network redundant Ethernet controller. The Linux network card driving controller comprises a system bus protocol control module, a control status register module, a receiving transmission control module, a receiving data buffer zone, a redundant channel switching control module, and a MAC protocol control module. The systembus protocol control module is configured to receive a system bus and is connected with the control status register module and the MAC protocol control module; the control status register module connected with the receiving data buffer zone and the redundant channel switching control module by the receiving transmission control module is used for receiving and sending a GMII interface signal; andthe MAC protocol control module connected with the control status register module and the receiving transmission control module is used for receiving and sending an MII interface signal through a first PHY management module to realize MAC layer protocol control during data communication. According to the invention, the Linux network card driving controller has the high reliability; and accurate and efficient allocation, utilization and recycling of the memory resource buffer zones and descriptors are realized.
Owner:XIAN MICROELECTRONICS TECH INST
Method and system for adaptively adjusting paging sending time number
ActiveCN103731875AReduce CPU loadReduce failureNetwork traffic/resource managementPagingResidence time
The invention discloses a method for adaptively adjusting the paging sending time number. The method includes the steps of obtaining configuration parameters CCCH and AG of a base station service cell, obtaining the twice-paging time number, the once-paging time number and the paging information request time number of the base station service cell, calculating a paging load, judging whether the current paging load is larger than or equal to a set paging load threshold value or not according to the current paging load, reducing the maximum paging information retransmission time number if the current paging load is larger than or equal to the set paging load threshold value, and increasing the maximum paging information retransmission time number if the current paging load is smaller than the set paging load threshold value. The invention further discloses a system for adaptively adjusting the paging sending time number. By means of the method and system, the maximum paging information retransmission time number can be dynamically and adaptively adjusted in real time, the load of a CPU can be lowered, the condition that retransmitted paging information loses efficacy due to long residence time is reduced, the use efficiency of an CCCH channel can be further improved, and indexes of the network paging success rate can be improved.
Owner:邳州市鑫盛创业投资有限公司
Inverter apparatus
ActiveUS7436144B2Total current dropTorque ripple reductionSingle-phase induction motor startersMotor/generator/converter stoppersPower inverterWave shape
A CPU calculates, based on a frequency command value for driving a motor and on a state quantity of the motor, an output-voltage command value in which only the phase advances while amplitude is constant in each calculation period, without reducing the calculation period. An ASIC reflects the output-voltage command value in a triangular wave signal in a time-series order to compare with each other, and outputs a PWM signal to a switching circuit. Thus, a waveform of an output voltage is made close to a sine wave irrespective of an output frequency being high or low, and a processing load of the CPU is reduced.
Owner:MITSUBISHI ELECTRIC CORP
DMA controller
InactiveUS8176221B2Easy to useFast switching speedEnergy efficient ICTEnergy efficient computingProcessor registerTime control
A DMA controller achieving real-time control of a DMA transfer relating to periodically operated peripheral devices at a low cost and with low power consumption. A typical embodiment of the invention is a DMA controller having: a counter for counting time; a counter comparator comparing a value of the counter and a counter value indicating an expected time of a DMA transfer; a peripheral device read unit reading a register of the peripheral device to acquire a state of a peripheral device by; and a state comparator comparing a value of the register read by the peripheral device read unit and a start condition of the DMA transfer, in which, with being triggered by establishment of a comparison result by the counter comparator, in accordance with a specified order, a processing of updating the counter value indicating the expected time of a DMA transfer to a value indicating a next expected time, a read of the register of the peripheral device by the peripheral device read unit, a comparison by the state comparator, and a DMA transfer on the condition that the comparison result by the state comparator is established are executed.
Owner:RENESAS ELECTRONICS CORP
File uploading processing method, device and server
The invention relates to a file uploading processing method, a device and a server. If a plurality of message digests are the same message digest, the file status of the file to be uploaded on the server is queried according to the received message digest, wherein, the message digest received for the first time is sent by the first client; according to the file state, if it is judged that the fileto be uploaded needs to be uploaded, only the upload request of the first client is processed, the file to be uploaded is uploaded through the first client, and the file state of the file to be uploaded is displayed on the other clients among the multiple clients. According to the upload request of the file upload, the server processes the input operation of only one file for the same file, and sends only the current upload state of the file to be uploaded to other clients, thereby reducing the burden of the server, saving the system storage resources, reducing the use of the bandwidth, and improving the transmission efficiency.
Owner:ZTE CORP
Apparatus and method for detecting rotation angle of rotating body
InactiveUS20080106229A1Reduce CPU loadMotor/generator/converter stoppersDC motor speed/torque controlPeak valueVIT signals
The rotation angle detection apparatus for detecting a rotation angle of a rotating body on the basis of a resolver signal outputted from a resolver mounted on the rotating body includes a first function of detecting a specific phase timing of the resolver signal, a second function of measuring a time needed for the resolver signal to reach from the specific phase timing to a peak thereof, a third function of generating a sampling timing in accordance with the time measured by the second function, a fourth function of sample-holding the resolver signal at the sampling timing to hold a peak value of the resolver signal, and a fifth function of computing the rotation angle of the rotating body on the basis of the peak value of the resolver signal held by the fourth function.
Owner:DENSO CORP
Data transmitting and receiving methods and devices
InactiveCN107241185AReduce CPU loadReduce occupancyKey distribution for secure communicationData transmissionEncryption
The application discloses data transmitting and receiving methods and devices. One specific embodiment of the data transmitting method comprises the following steps: transmitting data to be transmitted; randomly generating an encryption length; encrypting the data from a predetermined position till an encryption length reaches the abovementioned encryption length in order to generated encrypted data; generating message header information including the encryption length; and constructing the message header information and the encrypted data into a complete message for transmission. Through the embodiment, the problem of high CPU (Central Processing Unit) occupation rate of a data transmission end is solved. One embodiment of the data receiving method comprises the following steps: acquiring received data; reading the message header information in the data, and extracting a decryption length; and decrypting the data from a predetermined position till a decryption length reaches the abovementioned decryption length in order to generate decrypted data. Through the embodiment, the problem of high CPU occupation rate of a data receiving end is solved.
Owner:BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
3D printer temperature control system
ActiveCN106444899AImprove real-time performanceReduce CPU loadTemperature control using analogue comparing deviceBus interfaceHeating time
The invention discloses a 3D printer temperature control system. The 3D printer temperature control system comprises a bus interface module, a register file, a PID operation module and a temperature acquisition module which are sequentially connected, wherein the PID operation module is also connected with a heating module; the temperature acquisition module judges acquired temperature; if the acquired temperature is not out of range, temperature data is sent to the PID operation module; after calculation of the PID operation module is completed, an effective signal and PID control quantity are output to the heating module; the heating module adopts a PWM mode for heating; heating time is controlled by virtue of a PWM method according to the PID control quantity; the PID operation module is divided into four parts, namely scale operation, integration operation, differential operation and PID result operation; PID operation result is completed after six cycles. The 3D printer temperature control system disclosed by the invention has the advantages that PID operation result can be output once every six cycles by virtue of the PID operation module, and the heating module adopts a novel PWM hardware structure, so that real-time property, accuracy and stability of temperature control are effectively improved, CPU load is reduced, and function extension of the 3D printer can be facilitated.
Owner:CENT SOUTH UNIV
Method and apparatus for capturing an image
InactiveUS7978221B2Quality improvementReduce CPU loadTelevision system detailsPrintersElectronic shutterReference image
A method for capturing an image using an image capturing module with multiple pixels configured in a 2-dimensional matrix and a focal plane electronic shutter function which sequentially slides the exposure timing by constant interval by pixel group which is a unit of predetermined number of the pixels while scanning; the method includes an image data input process for detecting shutter operation, obtaining a reference image while skipping one or more of the pixel groups by sequentially sliding the exposure timing by the constant interval, and obtaining a target image while not skipping pixel groups to be captured, a motion data detection process for calculating the motion data of the target image based on the reference image, and a distortion compensation process for compensating for distortion in the target image according to the motion data.
Owner:RPX CORP
Microcomputer and motor control system provided therewith
InactiveUS8212515B2Quick conversionReduce CPU loadProgramme controlComputer controlDigital dataControl system
A microcomputer which obtains a rotor position signal from a biphase signal delivered by a resolver mounted on an electric motor according to a rotation phase of a rotor relative to a stator, thereby controlling the motor based on the rotor position signal. The microcomputer includes a digital signal converter which is configured by hardware and converts the biphase signal delivered from the resolver into a digital data position signal, the digital signal converter being mounted on a single chip.
Owner:KK TOSHIBA
Multimedia resource acquisition method, apparatus and system
ActiveCN101382959ARelieve operating pressureReduce CPU loadSpecial data processing applicationsCommunications systemComputer science
The invention discloses a multimedia resource obtaining method which comprises the steps: a multimedia resource saved in the form of vector points after hash process is stored by a first server uniformly; the first server determines a query point specified by a user and an identifier of a hashing bucket that the query point belongs to according to the request message transmitted by a client, and transmits a notification message carrying the identifier to a second server; and when determining the local existence of the hash bucket saved corresponding to the identifier according to the identifier carried in the notification message, the second server obtains at least one vector point nearest to the query point in the hash bucket and sends the at least one vector points to the client. In this way, operational pressure on the first server is released to a degree, thereby quickening the responding speed of a whole system in providing multimedia resource query service, and further improving user experience. The invention also discloses a communication device and a communication system simultaneously.
Owner:TSINGHUA UNIV +1
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