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    • 104. 发明授权
    • 16-state adaptive noise predictive maximum-likelihood detection system
    • 16状态自适应噪声预测最大似然检测系统
    • US08077764B2
    • 2011-12-13
    • US12360777
    • 2009-01-27
    • Evangelos S. EleftheriouRobert A. HutchinsSedat Oelcer
    • Evangelos S. EleftheriouRobert A. HutchinsSedat Oelcer
    • H03H7/30
    • H04L25/03299H04L25/03197H04L2025/03617
    • A 16-State adaptive NPML detector is provided for a tape drive which addresses weaknesses of a conventional fixed, 8-state EPR4 detector. Rather than having a fixed target channel, the detector is programmable to allow a range of target channels and can support “classical” partial response channels such as PR4 or EPR4 by programming predictor or whitening filter coefficients. In one embodiment, two filter coefficients may be set via XREG inputs or dynamically determined through the use of an LMS algorithm allowing the detector to adapt the predictor coefficients as data is being read. Another embodiment provides a detector for an EPR4 target in which the whitening filter has one coefficient. Components of the detection system include the detector itself, an LMS engine, a coefficient engine and a noise predictive or whitening filter. Coefficients from the LMS engine may be loaded or stored dynamically based upon conditions in the tape drive.
    • 为磁带驱动器提供了16状态自适应NPML检测器,其解决了常规固定的8状态EPR4检测器的缺点。 不是具有固定的目标通道,检测器可编程以允许一定范围的目标通道,并且可以通过编程预测器或白化滤波器系数来支持“经典​​”部分响应通道,例如PR4或EPR4。 在一个实施例中,可以经由XREG输入来设置两个滤波器系数,或者通过使用LMS算法动态地确定,允许检测器在正在读取数据时调整预测器系数。 另一个实施例提供了一种用于EPR4目标的检测器,其中白化滤波器具有一个系数。 检测系统的组件包括检测器本身,LMS引擎,系数引擎和噪声预测或增白滤波器。 可以根据磁带驱动器中的条件动态地加载或存储来自LMS引擎的系数。
    • 109. 发明申请
    • WRITE-ERASE ENDURANCE LIFETIME OF MEMORY STORAGE DEVICES
    • 内存存储设备的写保护寿命寿命
    • US20110029715A1
    • 2011-02-03
    • US12511577
    • 2009-07-29
    • Xiao-yu HuEvangelos S. EleftheriouRobert Haas
    • Xiao-yu HuEvangelos S. EleftheriouRobert Haas
    • G06F12/02G06F12/00
    • B62D35/001G06F12/0246G06F2212/1044G06F2212/7205G06F2212/7211G11C16/349G11C16/3495
    • A memory management system and method for managing memory blocks of a memory device of a computer. The system includes a free block data structure including free memory blocks for writing, and sorting the free memory blocks in a predetermined order based on block write-erase endurance cycle count and receiving new user-write requests to update existing data and relocation write requests to relocate existing data separately, a user-write block pool for receiving youngest blocks holding user-write data (i.e., any page being updated frequently) from the free block data structure, a relocation block pool for receiving oldest blocks holding relocation data (i.e., any page being updated infrequently) from the free block data structure, and a garbage collection pool structure for selecting at least one of user-write blocks and relocation blocks for garbage collection, wherein the selected block is moved back to the free block data structure upon being relocated and erased.
    • 一种用于管理计算机的存储器件的存储器块的存储器管理系统和方法。 该系统包括一个空闲块数据结构,包括用于写入的空闲存储器块,并且基于块写擦除耐久循环计数以预定顺序对可用存储器块进行排序,并且接收新的用户写入请求以更新现有数据和重定位写请求 重新定位现有数据,用于从空闲块数据结构接收持有用户写入数据(即,任何频繁更新的页面)的最小块的用户写入块池,用于接收保存重定位数据的最旧块的重定位块池(即, 任何不经常更新的页面)以及用于选择用于垃圾回收的用户写入块和重定位块中的至少一个的垃圾收集池结构,其中所选择的块被移动回到空闲块数据结构 被搬迁和删除。
    • 110. 发明申请
    • MEMORY MANAGEMENT IN A NON-VOLATILE SOLID STATE MEMORY DEVICE
    • 非易失性固态存储器件中的存储器管理
    • US20110022931A1
    • 2011-01-27
    • US12835783
    • 2010-07-14
    • Evangelos S. EleftheriouIlias IliadisRobert HaasXiaoyu Hu
    • Evangelos S. EleftheriouIlias IliadisRobert HaasXiaoyu Hu
    • H03M13/05G06F11/10
    • G06F11/1068G11C16/349G11C16/3495
    • A computer-implemented method of managing a memory of a non-volatile solid state memory device by balancing write/erase cycles among blocks to level block usage. The method includes: monitoring an occurrence of an error during a read operation in a memory unit of the device, wherein the error is correctable by error-correcting code; and programming the memory unit according to the monitored occurrence of the error; wherein the step of monitoring the occurrence of an error is carried out for at least one block; and wherein said step of programming comprises wear-leveling the monitored block according the error monitored for the monitored block. A computer system and a computer program-product is also provided.The non-volatile solid state memory device includes: a memory unit having data stored therein; and a controller with a logic for programming the memory unit according to a monitored occurrence of an error during a read operation. The method includes: monitoring an occurrence of an error during a read operation in a memory unit of the device; and programming the memory unit according to the monitored occurrence of the error.
    • 一种计算机实现的通过平衡块之间的写入/擦除循环来平衡块使用来管理非易失性固态存储器件的存储器的方法。 该方法包括:在设备的存储器单元中的读取操作期间监视错误的发生,其中可通过纠错码校正错误; 并根据所监视的错误发生来对存储器单元进行编程; 其中,针对至少一个块执行监视错误发生的步骤; 并且其中所述编程步骤包括根据所监视的块监测的误差来磨损所监视的块。 还提供了计算机系统和计算机程序产品。 非易失性固态存储装置包括:具有存储在其中的数据的存储单元; 以及控制器,具有用于根据在读取操作期间监视的错误发生来对存储器单元进行编程的逻辑。 该方法包括:在设备的存储器单元中的读取操作期间监视错误的发生; 并根据监视出现的错误对存储器单元进行编程。