NONVOLATILE SEMICONDUCTOR MEMORY DEVICE FOR SUPPORTING HIGH SPEED SEARCH IN CACHE MEMORY
    1.
    发明申请
    NONVOLATILE SEMICONDUCTOR MEMORY DEVICE FOR SUPPORTING HIGH SPEED SEARCH IN CACHE MEMORY 有权
    用于支持高速缓存搜索的非易失性半导体存储器件

    公开(公告)号:US20080195803A1

    公开(公告)日:2008-08-14

    申请号:US12029665

    申请日:2008-02-12

    IPC分类号: G06F12/00

    摘要: A method for reducing a memory map table search time when employing a semiconductor memory device as a temporary memory of large capacity storage device, and a semiconductor memory device therefore, are provided. A MAP RAM is prepared for storing map table data related to the nonvolatile memory area in the volatile memory area. At an initial power-up operation, it is determined whether a logical address is searched for from the map table data while the map table data existing in a map storage area of the nonvolatile memory area is loaded into the MAP RAM. A physical address corresponding to the logical address is provided as an output, when the logical address is searched for. Search time for a memory map table is reduced and read performance in a high speed map information search is increased.

    摘要翻译: 提供一种用于在采用半导体存储器件作为大容量存储器件的临时存储器时减少存储器映射表搜索时间的方法,以及半导体存储器件。 准备MAP RAM用于存储与易失性存储器区域中的非易失性存储器区域相关的映射表数据。 在初始加电操作中,确定存在于非易失存储器区域的映射存储区域中的映射表数据是否被加载到MAP RAM中时,从地图表数据中搜索逻辑地址。 当搜索逻辑地址时,提供与逻辑地址对应的物理地址作为输出。 降低了存储器映射表的搜索时间,并且增加了在高速地图信息搜索中的读取性能。

    SECURE MULTIMEDIA CARD AND MEMORY CARD SYSTEM
    2.
    发明申请
    SECURE MULTIMEDIA CARD AND MEMORY CARD SYSTEM 审中-公开
    安全多媒体卡和内存卡系统

    公开(公告)号:US20070192634A1

    公开(公告)日:2007-08-16

    申请号:US11668419

    申请日:2007-01-29

    IPC分类号: G06F12/14

    CPC分类号: G06F21/10 G06F12/1441

    摘要: Provided are a secure multimedia card (secure MMC) and a memory card system having the same. The memory card system may include a host, and a secure MMC having a user data area accessed by a normal command and a restricted area accessed by a secure command, wherein the user data area in communication with the host stores user data and the restricted area stores access restriction data. The restricted area may be accessed in the secure MMC even though the interface unit in the host does not support commands requesting the access to the restricted area in the secure MMC.

    摘要翻译: 提供了一种安全多媒体卡(安全MMC)和具有该多媒体卡的存储卡系统。 存储卡系统可以包括主机和具有由正常命令访问的用户数据区域和由安全命令访问的受限区域的安全MMC,其中与主机通信的用户数据区域存储用户数据和限制区域 存储访问限制数据。 即使主机中的接口单元不支持请求访问安全MMC中的限制区域的命令,也可以在安全MMC中访问限制区域。

    SOLID STATE MEMORY (SSM), COMPUTER SYSTEM INCLUDING AN SSM, AND METHOD OF OPERATING AN SSM
    3.
    发明申请
    SOLID STATE MEMORY (SSM), COMPUTER SYSTEM INCLUDING AN SSM, AND METHOD OF OPERATING AN SSM 有权
    固态存储器(SSM),包括SSM的计算机系统以及操作SSM的方法

    公开(公告)号:US20090119353A1

    公开(公告)日:2009-05-07

    申请号:US12255759

    申请日:2008-10-22

    IPC分类号: G06F12/02 G06F12/00

    摘要: In one aspect, a determination is made as whether partition metadata of a solid state memory has changed, and if so, the partition metadata is analyzed to locate invalid data stored in the solid state memory. This analysis may include determining that a file system type of a partition has changed, and invalidating data in response to the changed file system type. Alternately, or in addition, the analysis may include determining that a partition has changed, and invalidating data in response to the changed partition.

    摘要翻译: 在一个方面,确定固态存储器的分区元数据是否已经改变,如果是,则分析分区元数据以定位存储在固态存储器中的无效数据。 该分析可以包括确定分区的文件系统类型已经改变,并且响应于改变的文件系统类型使数据无效。 或者或另外,分析可以包括确定分区已经改变,并且响应于改变的分区使数据无效。