190results about How to "Fast reading and writing" patented technology

The invention belongs to the technical field of the information memory and particularly relates to a ferroelectric oxide/semiconductor sequentially composite film diode resistance change memory. The resistance change memory comprises a substrate, a bottom electrode, a ferroelectric oxide/semiconductor composite memory function layer and a top electrode, and is prepared by the following method which comprises the following steps: developing compound electrodes, such as strontium ruthenium, lanthanum nickel and the like, or metal on the monocrystal strontium titanate or SiO2/Si substrate to serve as the bottom electrode; then developing the ferroelectric oxide/semiconductor composite film function layer by a pulsed laser deposition or radio frequency magnetron sputtering method; and developing the metal top electrode to form a single diode memory unit structure. The polarity of the diode changes with the orientation of the electric domain. The ferroelectric oxide/semiconductor composite film diode resistance change memory has the advantages of high memory density, good information retentivity and low power consumption.

The invention discloses a storage method of a real-time database. The storage method comprises the following steps: filtering historical data by a lossy compression algorithm; when the historical data is subjected to an exception examination of lossy compression, writing the historical data into a current memory table and an operation log buffer zone; when the current memory table is full, compressing and writing the historical data in the current memory table into a minute-level historical data file, and applying for a new memory table as the current memory table; combining a plurality of minute-level historical data files into a day-level historical data file by a combination thread at preset time of each day; combining a plurality of day-level historical data files into a month-level historical data file at the preset time of each month; combining a plurality of month-level historical data files into a year-level historical data file in the preset time of each year. The storage method supports multi-core optimization and solid state disk optimization, and data writing-in full-sequence operation is guaranteed since a file block structure design is adopted. The storage method has higher historical data reading and writing speed, and requirements on historical data processing by an integrated supervision and control system can be met.

The invention provides a multi-mode co-location system and method for an intelligent vehicle. The method comprises the steps of collecting road images and scene images of a vehicle travel section, andacquires GNSS position information; if the GNSS position information is received, taking the GNSS position information as positioning information; if the GNSS position information is not received, checking whether the vehicle travel section pre-establishes a visual map database, and if not, using a visual odometer-based vehicle positioning technology to perform position acquisition according to the collected road images; and if so, performing location acquisition by the vehicle positioning technology constructed based on the visual map database according to the collected scene images; or merging the location information obtained by the vehicle positioning technology based on the visual map database and the vehicle positioning technology based on the visual odometer. The invention combinesthree positioning technologies, which can well solve the problem that the GNSS blind zone cannot obtain the positioning information.

Disclosed is a magnetoelectric effect based magnetoelectric memory element of a ferroelectric/ferromagnetic composite thin film. Ferroelectric and ferromagnetic thin films are deposited on a Pt/Ti/SiO<2>/Si composite substrate in sequence to prepare a laminated structure; the chemical structural formula of the ferroelectric thin film with a piezoelectric effect is 0.5Ba(Zr<0.2>Ti<0.8>) O<3>-0.5(Ba<0.3>Ca<0.7>)TiO<3>(BZT-BCT); the thin film with a magnetostrictive effect is Fe<0.7>Ga<0.3>; the preparation method comprises the steps of preparing the ferroelectric ceramic thin film through radio frequency magnetron sputtering, and preparing the ferromagnetic thin film by direct current magnetron sputtering. The magnetoelectric effect based magnetoelectric memory element has the advantages as follows: the memory element is nonvolatile, capable of keeping the polarized and magnetized states under externally-applied voltage, and low in power consumption; the memory unit has good ferroelectric, piezoelectric and ferromagnetic performances at the room temperature; and the maximum electric field control magnetic resistance effect 6% is obtained when the externally applied bias voltage is 20V.

The invention discloses an SSD controller based on native PCIe interface and a control method of the SSD controller. The SSD controller is characterized by comprising the following steps that when a CPU writes data to an SSD, a DMA controller guides PCIe data flows in a PCIe terminal into a DDR controller and then buffers the PCIe data flows into a DDR, meanwhile, the CPU transmits description information of the data flows to a NandFlash controller through the DMA controller, an address control module judges the effectiveness of data after receiving the description information, the data flows are verified through an ECC module from the DDR, the data flows are converted into data flows of an ONFI interface time sequence through an LLD drive module and written into the SSD. Intermediate protocol conversion does not exist in the SSD controller of the native PCIe interface, expenditure is small, and bandwidth waste is few; parallel processing can be performed, and read-write speed of the SSD is high; no mechanical structure exists, the service life is long, the capacity for resisting severe environment is high, and industrial-grade storage requirements are met; the structure is simple, capacity configuration is flexible, and the SSD controller is not limited to upgrading of NandFlash chips.

The invention discloses a live video processing and time shifting method, a video processing device and a cloud storage system, and the method comprises the steps: obtaining a live video at the beginning of live broadcast; dividing the live video into a plurality of video slices according to a specified time interval, and establishing index files of the plurality of video slices; and uploading theplurality of video slices obtained through division and the index file to a cloud storage system. According to the technical scheme provided by the invention, the processing efficiency of the time shifting request can be improved.

The invention discloses a data consistency storage method and system for an object storage device, and the system comprises a plurality of distributed servers, i.e., an OSD which is used for storing the data part of a file, optimizing the data distribution, supporting the prefetching of data, and managing the metadata of each object; and a plurality of metadata servers, namely MDSs, which are usedfor storing the attributes of the objects and providing metadata services, namely storing the information of the data of the objects stored in the distributed servers. By implementing the method andthe system, data inconsistency among a plurality of servers is eliminated; the read-write speed is high, sharing is facilitated, large-scale, high-reliability, high-performance and super-fusion storage application can be achieved, and the method is suitable for application scenarios where the requirements for expandability and storage performance are continuously improved.

The invention discloses a mixed file system based on different storage media. The storage media comprise non-volatile small-granularity addressing media and non-volatile large-granularity addressing media, and the two kinds of media are addressed according to the unified sequence. The non-volatile small-granularity addressing media are used for storing metadata of the file system, and the non-volatile large-granularity addressing media are used for storing data of the file system. The file system calls different granularities of reading or writing for different address ranges under different situations. According to the mixed file system, large data volume reading and writing and small data volume reading and writing are allocated to the corresponding media according to different situations, the reading and writing speed is improved, and the storing efficiency of the file system is improved. The storage space is fully utilized, superfluous redundancy does not exist, additional I/O is reduced, and reading and writing performance is improved. The mixed file system has the high reliability, expandability and I/O speed.

The invention relates to a multi-channel flash memory controller, which solves the defect of slow data read-write speed of a flash memory data in the prior art. The controller comprises an IDE interface module, a microprocessor and a flash memory management module which are connected with one another through two-port caches, wherein the flash memory management module comprises a flash memory interface command resolving unit, an inner management unit, a data interface management unit, a channel arbitration unit, a channel cache and a flash memory sequence unit; the data interface management unit, the channel arbitration unit and the flash memory sequence unit are sequentially connected; the data interface management unit and the channel arbitration unit are connected with the flash memory interface command resolving unit through the inner management unit; and a data transmission channel is independent of a command transmission channel. The multi-channel flash memory controller has the advantages of fast flash memory read-write speed, high data read-write reliability, high error correcting capacity, and long flash memory service life.

The invention relates to a one-card and multi-meter multi-mode charging radio frequency card prepaid intelligent water meter and a charging method. The intelligent water meter comprises a valve driving circuit, a power management circuit, a display module, a read-write card module, a storage and a microprocessor; the read-write card module is used for reading a card; the microprocessor comprises an allocation module, a card information collection module, a total water consumption calculation module, a valve status monitoring module, a power judgment module, a flow collection module and a differential charging module; the allocation module is used for allocating limiting charge and charging differentials for the differential charging module; the card information collection module is used for reading and writing the recharge amount from the read-write card module; the total water consumption calculation module is used for sending a pulse signal according to a flow sensor to calculate the total dosage and sending the total dosage to the differential charging module. According to the one-card and multi-meter multi-mode charging radio frequency card prepaid intelligent water meter and the charging method, a one-card and multi-meter mode is adopted, only one user card is needed by old user transformation with multiple water meters, and the management difficulty to the users is reduced.

The invention discloses a magnetic multilayer film as well as a magnetic logic element and a magnetic random access memory thereof. The magnetic multilayer film disclosed by the invention comprises a first antiferromagnetic layer, a first hard magnetic layer, a first non-magnetic metal layer, a second soft magnetic layer, a tunnel barrier layer, a third soft magnetic layer, a second non-magnetic metal layer, a fourth hard magnetic layer and a second antiferromagnetic layer from bottom to top, wherein the third magnetic layer is set to be have a first critical current capable of turning over the magnetization direction of the third magnetic layer and the second magnetic layer is set to be have a second critical current capable of turning over the magnetization direction of the second magnetic layer, and the first critical current is not equal to the second critical current. The magnetic logic element and the magnetic random access memory based on the magnetic multilayer film disclosed by the invention have the advantages of higher read-write speed, relatively small current density required by read-write operation and low consumed power, and energy saving.

The invention discloses a high-performance storage pool organization method and device. The method includes the steps that an SSD, an SAS disk and an SATA disk are converted into a first RAID5 disk, a second RAID5 disk and a third RAID5 disk respectively through an RAID5 distributed odd-even check strategy; the three RAID5 disks are organized into a layered storage pool; storage spaces with the same capacity are obtained from three storage layers of the storage pool respectively and organized into a logical volume with three layers; all data needing to be read and written are written into the high-performance storage layer of the logical volume, and the access popularity of the data is calculated; if the access popularity of the data is smaller than a first popularity hreshold value and larger than a second hot degree threshold value, the data are migrated to the intermediate-performance storage layer of the logical volume. According to the method, on the basis of guaranteeing the large capacity of the storage pool, the read-write speed of the data is increased, and the safety of the data is improved.

The invention belongs to the field of network cluster management, and provides a cluster monitor and management method and system. According to the method and system, key value type databases are created on a monitor node and all computing nodes respectively, and updating data of the computing nodes are synchronized to the monitor node through direct synchronization between the key value type databases. Due to the fact that the key value type databases are internal storage type non-relational databases, and have the high read-write speed and flexible data storage types, the time for achieving data synchronization through the databases is short, the competitive relation between the computing nodes is not large, the pressure of the monitor node can be effectively relieved, the network broadband utilization rate can be reduced, data zero redundancy, high availability and high expandability can be achieved, and in addition, a principle and method with grouping management easy are provided.

The invention provides a method and a device for transmitting audio data, wherein, the method enables an audio device to conduct the audio transmission by utilizing a pre-applied cache, and the cache is divided into at least two spaces. The method comprises a data prewriting step, a data writing step and a data reading step, wherein, during data pre-writing step, the audio data coming from a source device is prewritten into the cache; during the data writing step, the residual audio data is written in to a first free space of the two spaces; during the data reading step, the written data is read from a second space according to the written sequence of the audio data, and sent to a target device. In the invention, only one cache is applied and divided into a plurality of spaces, so that the flexibility of data processing is enhanced; and an FIFO memory which is originally arranged on an SRAM of an external device is arranged in a DMA, so that the SRAM of an internal chip of the external device is saved.

The invention provides a storage structure and a forming method thereof, wherein the storage structure comprises a substrate, a plurality of channel structures formed on the substrate, and a plurality of grid structures matched with the channel structures mutually, wherein each channel structure comprises multiple single crystal semiconductor layers and multiple oxide layers, which are alternatively stacked on the direction vertical to the substrate, at least one oxide layer is a single crystal oxide layer, and each grid structure comprises a grid dielectric layer adjacent to the channel structures and a grid layer adjacent to the grid dielectric layer. The storage structure has the advantages of simple preparation process, low cost, high reading-writing speed and high storage density.

The invention provides a vaccine monitoring method and system based on an RFID electronic tag. Real-time online automatic acquisition, automatic information synchronous transmission and remote synchronous monitoring of the state of vaccines stored in the vaccine cabinet are realized by adopting radio frequency identification technology, identity authentication technology, temperature and humiditysensing technology and network technology, so that the operation and management efficiency can be greatly improved, the data is reliable, and potential risks can be controlled and reduced.

The invention discloses a solid-state drive cache achievement method and a solid-state drive. The solid-state drive cache achievement method is characterized in that an SCM is added in the solid-state drive, a hard drive controller regards the SCM as solid-state drive cache, a host writes host data into the solid-state drive, the SCM is firstly written to achieve data cache, a renewing program is set in the background, and the renewing program renews the cached data to a NAND storage unit of the solid-state drive, and recycles the corresponding cache; regarding the SCM, when the system is power off, data in the SCM can continue to be stored. The SCM replaces partial DRAM to be regarded as data cache, a read-write speed higher than flash memory can be provided, and the SCM is cheaper than the DRAM in cost. Data can be ceaselessly stored even under the state that a power source is lost, the operation at a byte level is supported, and the safety of the data can be guaranteed on the premise that the high data accessing speed is guaranteed.

The invention discloses a method for calculating the report length of an uplink queue with an ONU (optical network unit). The method comprises the following steps: an ONU creates an inlet packet length queue and an outlet packet length queue for each uplink queue, and the inlet packet length queue and the outlet packet length queue are stored at an SRAM and a DRAM respectively; when a new uplink data packet is added to each uplink queue of the ONU, the length of the uplink data packet is recorded in an inlet packet length queue corresponding to the uplink queue; when the length of data stored in the inlet packet length queue reaches Unit_dram, the data with the length of Unit_dram is stored in an outlet packet length queue corresponding to the uplink queue; the ONU creates n report queues for each uplink queue, and the n report queues are stored in the SRAM in an ONU chip. According to the method, only partial storage space of the SRAM needs to be occupied, the storage space of the DRAM is fully utilized, and the method has the advantages of high read-write speed and high efficiency.

The embodiment of the invention discloses a method for quickening the start of an embedded Linux system, which comprises the following steps of: logging in the embedded Linux system; optimizing a kernel processing speed on the basis of the embedded Linux system; tracking and analyzing a start process of the embedded Linux system to obtain a detailed report about time consumption for Linux start; and optimizing a process in the Linux system according to the detailed report about time consumption. By carrying out the method, the start speed of the embedded Linux system can be quickened. The invention provides a general method which is a method capable of providing start optimization for different embedded Linux systems.

The invention discloses a passive intelligent optical fiber network management system, comprising a radio frequency identification electronic tag, an optical distribution network frame, a plastic foot ring, a card reader and an application and control processing system, wherein a radio frequency identification core chip is arranged in the radio frequency identification electronic tag, the radio frequency identification core chip is composed of radio frequency current, a digital control circuit and an electrically erasable programmable read-only memory, a microstrip circuit is arranged on the radio frequency identification core chip, an antenna circuit is arranged in the microstrip circuit, the plastic foot ring is composed of a pigtail and a tray panel, the radio frequency identification electronic tag is bound on the pigtail, the plastic foot ring is connected to a service opening application interface and a resource management application interface, a pigtail port is connected with a tag base combination, and the card reader comprises a control unit, a high frequency interface for transmitting power and carrying out modulation-demodulation and an antenna connected at the outside of the high frequency interface. Compared with the prior art, the passive intelligent optical fiber network management system disclosed by the invention is a passive scheme and is used on outdoor passive line facility, the integration degree is high, and the working efficiency is high.