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    METHOD AND APPARATUS FOR IMPROVING THE READ ACCESS TIME IN A NON-VOLATILE MEMORY SYSTEM
    3.
    发明申请
    METHOD AND APPARATUS FOR IMPROVING THE READ ACCESS TIME IN A NON-VOLATILE MEMORY SYSTEM 审中-公开
    用于改善非易失性存储器系统中读取访问时间的方法和装置

    公开(公告)号：WO2003105155A1

    公开(公告)日：2003-12-18

    申请号：PCT/US2003/005354

    申请日：2003-02-20

    Applicant: SANDISK CORPORATION ,  MAK, Alexander, K. ,  PHAM, Long, C. ,  GROSS, Stephen, J. ,  TUERS, Edward, P. ,  QUADER, Khandker, N.

    Inventor： MAK, Alexander, K. ,  PHAM, Long, C. ,  GROSS, Stephen, J. ,  TUERS, Edward, P. ,  QUADER, Khandker, N.

    IPC: G11C7/10

    CPC classification number: G11C7/1057 ,  G11C7/1024 ,  G11C7/1051 ,  G11C16/26

    Abstract: Methods and apparatus for reducing read access times associated with obtaining stored data from a non-volatile memory system are disclosed. According to one aspect of the present invention, a method for providing data to a bus within a memory system that includes a storage area involves providing a first signal (REM) within the memory system and enabling an output buffer in response to the first signal. The first signal indicates that the data is to be provided to the bus from the storage area, and is of a first level which has a first duration. The output buffer provides the data from the storage area to the bus, and remains substantially enabled while the first signal is of the first level. In one embodiment, the method also includes providing a second signal (OE) as an input to the output buffer to enable the output buffer.

    Abstract translation: 公开了用于减少与从非易失性存储器系统获得存储的数据相关联的读访问时间的方法和装置。 根据本发明的一个方面，一种用于向包括存储区域的存储器系统内的总线提供数据的方法包括在存储器系统内提供第一信号（REM），并响应于第一信号启用输出缓冲器。 第一信号指示数据将从存储区域提供给总线，并且是具有第一持续时间的第一级。 输出缓冲器将数据从存储区域提供给总线，并且在第一信号处于第一级时保持基本使能。 在一个实施例中，该方法还包括提供第二信号（OE）作为输出到输出缓冲器以启用输出缓冲器。

    SYMBOL FREQUENCY LEVELING IN A DATA STORAGE SYSTEM
    5.
    发明申请
    SYMBOL FREQUENCY LEVELING IN A DATA STORAGE SYSTEM 审中-公开
    数据存储系统中的符号频率调整

    公开(公告)号：WO2004021576A1

    公开(公告)日：2004-03-11

    申请号：PCT/US2003/027322

    申请日：2003-08-29

    Applicant: SANDISK CORPORATION ,  GONGWER, Geoffrey, S. ,  GROSS, Stephen, J.

    Inventor： GONGWER, Geoffrey, S. ,  GROSS, Stephen, J.

    IPC: H03M7/00

    CPC classification number: H03M5/00 ,  H03M7/40

    Abstract: Methods and apparatus for transforming data into a format which may be efficiently stored in a non-volatile memory are disclosed. According to one aspect of the present invention, a method for storing information of a first data format in a memory system includes generating statistics associated with the first data format, and transforming the information from the first data format to a second data format using the statistics. Once the information is transformed into the second data format, the information is stored into a memory. Storing the information in the second data format in the memory includes storing an identifier that identifies a transformation used to transform the information to the second data format. In one embodiment, costs associated with storing the information in the second data format are less than or equal to costs associated with storing the information in the first data format.

    Abstract translation: 公开了将数据转换成可以有效地存储在非易失性存储器中的格式的方法和装置。 根据本发明的一个方面，一种用于将第一数据格式的信息存储在存储器系统中的方法包括生成与第一数据格式相关联的统计信息，以及使用统计信息将信息从第一数据格式转换为第二数据格式 。 一旦信息被转换成第二数据格式，信息被存储到存储器中。 以第二数据格式存储在存储器中的信息包括存储识别用于将信息变换为第二数据格式的变换的标识符。 在一个实施例中，与以第二数据格式存储信息相关联的成本小于或等于与以第一数据格式存储信息相关联的成本。

    INCREASING THE EFFECTIVENESS OF ERROR CORRECTION CODES AND OPERATING MULTI-LEVEL MEMORY SYSTEMS BY USING INFORMATION ABOUT THE QUALITY OF THE STORED DATA
    6.
    发明申请
    INCREASING THE EFFECTIVENESS OF ERROR CORRECTION CODES AND OPERATING MULTI-LEVEL MEMORY SYSTEMS BY USING INFORMATION ABOUT THE QUALITY OF THE STORED DATA 审中-公开
    通过使用关于存储数据质量的信息来提高错误修正代码的有效性和操作多级存储器系统

    公开(公告)号：WO2003100791A1

    公开(公告)日：2003-12-04

    申请号：PCT/US2003/014975

    申请日：2003-05-12

    Applicant: SANDISK CORPORATION

    Inventor： GUTERMAN, Daniel, C. ,  GROSS, Stephen, J. ,  GONGWER, Geoffrey, S.

    IPC: G11C29/00

    CPC classification number: G11C16/3418 ,  G06F11/1012 ,  G06F11/1072 ,  G11C11/56 ,  G11C11/5621 ,  G11C16/3431 ,  G11C29/00 ,  G11C29/42 ,  G11C29/76 ,  G11C2029/0411

    Abstract: The quality of data stored in a memory system in assessed by different methods, and the memory system is operated according to the assessed quality. The data quality (a) can be assessed during I-cad operations. Subsequent use of an Error Correction Code (a) can utilize the quality indications to detect and reconstruct the data with improved effectiveness. Alternatively, a statistics of data quality can be constructed and digital data values can be associated in a modified manner to prevent data corruption. In both cases the corrective actions can be implemented specifically on the poor quality data, according to suitably chosen schedules, and with improved effectiveness because of the knowledge provided by the quality indications. These methods can be especially useful in high-density memory systems constructed of multi-level storage memory cells.

    Abstract translation: 存储在存储器系统中的数据的质量通过不同的方法评估，并且存储器系统根据评估的质量进行操作。 数据质量（a）可以在I-cad操作期间进行评估。 随后使用纠错码（a）可以利用质量指示来检测和重建数据，并提高效率。 或者，可以构建数据质量的统计，并且可以以修改的方式将数字数据值相关联以防止数据损坏。 在这两种情况下，根据适当选择的时间表，纠正措施可以针对质量差的数据进行具体实施，并且由于质量指示提供的知识而提高了效率。 这些方法对于由多级存储单元构成的高密度存储器系统尤其有用。

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