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    • 1. 发明申请
    • TWO STAGE CHECKSUMMED RAID STORAGE MODEL
    • 两级检查RAID存储模式
    • WO2012052800A8
    • 2013-06-20
    • PCT/IB2010003263
    • 2010-10-21
    • ORACLE INT CORPBOURBONNAIS ROCHSANOUILLET BLAISE
    • BOURBONNAIS ROCHSANOUILLET BLAISE
    • G06F11/10
    • G06F3/0689G06F11/1076G06F2211/109
    • A method for writing a logical data block to storage. The method includes receiving a request to write a logical data block to a storage pool, allocating a number of physical log blocks in a RAID log and a parity block for the logical data block, and writing the logical data block and the parity block to the physical log blocks. The number of the physical log blocks are less than a number of disks storing the RAID log. The method further includes allocating space in a physical slab block in a RAID slab for the logical data block, copying data including the logical data block to the space in the physical slab block, and updating, in the RAID slab, a checksum corresponding to the physical slab block and a parity block that includes the data stripe having the physical slab block based on the data copied.
    • 一种将逻辑数据块写入存储的方法。 该方法包括接收向存储池写入逻辑数据块的请求,在RAID日志中分配多个物理日志块和用于逻辑数据块的奇偶校验块,以及将逻辑数据块和奇偶校验块写入到 物理日志块。 物理日志块的数量少于存储RAID日志的磁盘数。 该方法还包括在逻辑数据块的RAID板中分配物理板块中的空间,将包括逻辑数据块的数据复制到物理板块中的空间,以及在RAID板中更新与 物理板块和奇偶校验块,其包括基于所复制的数据的具有物理板块的数据条带。
    • 5. 发明申请
    • MEMORY DEVICE WITH SPECULATED BIT FLIP THRESHOLD
    • 具有定位位移片的存储器件
    • WO2015152922A1
    • 2015-10-08
    • PCT/US2014/032818
    • 2014-04-03
    • EMPIRE TECHNOLOGY DEVELOPMENT LLC
    • ZHANG, Tong
    • G06F11/10
    • G06F11/1096G06F11/1012G06F2211/109G11C29/50004G11C2029/5004H03M13/1108H03M13/1177
    • Technologies are described for systems, devices and methods effective to decode data read from a memory. Coded data may be stored in a buffer. A parity check syndrome vector may be calculated by a bit flip module, based on the coded data and based on a parity matrix. The parity check syndrome vector may include unsatisfied bits. The parity check syndrome vector may be stored in the buffer. The bit flip module may calculate a speculated bit flip threshold based on a feature of the parity matrix. The bit flip module may determine, based on the parity check syndrome vector, a number of unsatisfied parity checks participated in by a particular bit of the coded data. The bit flip module may flip the particular bit in response to the number of unsatisfied parity checks for the particular bit being greater than or equal to the speculated bit flip threshold.
    • 描述了有效解码从存储器读取的数据的系统,设备和方法的技术。 编码数据可以存储在缓冲器中。 可以通过位翻转模块,基于编码数据并基于奇偶矩阵来计算奇偶校验校验子矢量。 奇偶校验矩阵向量可以包括不满足的比特。 奇偶校验校验子载体可以存储在缓冲器中。 位翻转模块可以基于奇偶校验矩阵的特征来计算推定的位翻转阈值。 位翻转模块可以基于奇偶校验校验子矢量确定由编码数据的特定比特参与的多个不满足的奇偶校验。 响应于特定位的不满足奇偶校验的数量大于或等于推定的位翻转阈值,位翻转模块可以翻转特定位。
    • 8. 发明申请
    • DYNAMICALLY CONFIGURATED STORAGE ARRAY WITH IMPROVED DATA ACCESS
    • 具有改进的数据访问的动态配置存储阵列
    • WO2002095758A1
    • 2002-11-28
    • PCT/US2002/015749
    • 2002-05-17
    • TACHYON SEMICONDUCTOR CORPORATION
    • PATTI, Robert
    • G11C7/00
    • G06F11/1008G06F2211/109G11C11/401G11C29/42G11C29/4401G11C29/70G11C29/76G11C29/846G11C2029/0407
    • A reconfigurable memory[10, 50, 101, 102, 300] having M bit lines[12] and a plurality of row lines[13], where M>l. The memory includes an array of memory storage cells[15], each memory storage cell[15] storing a data value. The data value is read from or into the storage cells[15] by coupling that data value to one of the bit lines[12] in response to a row control signal on one of the row lines. A row select circuit generates[43] the row control signal on one of the row lines in response to a row address being coupled to the row select circuit[43]. The row select circuit[43] includes a memory for storing a mapping of the row addresses to the row lines that determines which of the row lines is selected for each possible value of the row address. The memory includes a plurality of sense amplifiers[21], one such sense amplifier being connected to each of the bit lines[13] for measuring a signal value on that bit line. A controller[40, 105, 205, 305] that is part of the memory tests the memory storage cells both at power up and run time to detect defective memory storage cells. The controller[40, 105, 205, 305] uses an error correcting code scheme to detect errors during the actual operation of the memory. The memory includes sufficient spare rows and columns to allow the controller to substitute spares for rows or columns having defective memory storage cells.
    • 具有M个位线[12]和多个行线[13]的可重构存储器[10,50,101,102,300],其中M> 1。 存储器包括存储存储单元阵列[15],存储数据值的每个存储器存储单元[15]。 响应于行行之一上的行控制信号,将数据值从存储单元[15]读取或写入数据值[15]。 响应于行地址耦合到行选择电路[43],行选择电路在行行之一上生成行控制信号。 行选择电路[43]包括用于存储行地址到行行的映射的存储器,其确定为行地址的每个可能值选择行行。 存储器包括多个读出放大器[21],一个这样的读出放大器连接到每个位线[13],用于测量该位线上的信号值。 作为存储器的一部分的控制器[40,105,205,305]在上电和运行时间测试存储器存储单元以检测有缺陷的存储器存储单元。 控制器[40,105,205,305]使用纠错码方案在存储器的实际操作期间检测错误。 存储器包括足够的备用行和列,以允许控制器将具有缺陷存储器存储单元的行或列替换为备用。
    • 9. 发明申请
    • INTELLIGENT DISK-CACHE MEMORY
    • 智能盘存储器
    • WO1996041249A2
    • 1996-12-19
    • PCT/US1996006520
    • 1996-05-20
    • TRICORD SYSTEMS, INC.
    • TRICORD SYSTEMS, INC.ASZMANN, Lawrence, E.GUIDER, John, P.
    • G06F00/00
    • G11C29/74G06F11/1076G06F11/2015G06F12/0804G06F12/0866G06F2211/1009G06F2211/109
    • Method and apparatus for intelligently caching data in an intelligent disk subsystem connected to a main computer having a main memory. The disk subsystem includes a disk-cache memory having a first and a second memory bank. A first copy and a second copy of data are held in the first and second memory banks, respectively, wherein the first memory bank is coupled to a first battery and the second memory bank is coupled to a second battery. A detected failure occurring in either memory bank or either battery causes either the first copy or the second copy of data to be read, based on where a detected failure occurred. In one embodiment, successive read operations are routed to alternating memory banks. In one embodiment, read operations going to disk devices and returning data to the disk-cache memory are given a higher priority than write operations. In one embodiment, only write operation data are cached in the cache memory, but either read or write operations are completed using the data held in the cache memory.
    • 连接到具有主存储器的主计算机的智能磁盘子系统中智能缓存数据的方法和装置。 磁盘子系统包括具有第一和第二存储体的磁盘高速缓冲存储器。 数据的第一副本和第二副本分别保存在第一和第二存储体中,其中第一存储体耦合到第一电池,第二存储体耦合到第二电池。 根据检测到的故障发生的位置,在存储体或任一电池中发现的检测到的故障导致要读取数据的第一副本或第二副本。 在一个实施例中,连续的读取操作被路由到交替的存储体。 在一个实施例中,到磁盘设备的读取操作和将数据返回到磁盘高速缓冲存储器的读取操作被给予比写入操作更高的优先级。 在一个实施例中,只有写入操作数据被缓存在高速缓冲存储器中,而是使用保存在高速缓冲存储器中的数据来完成读取或写入操作。