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    • 4. 发明申请
    • METHOD AND APPARATUS FOR RESOLVING PHYSICAL BLOCKS ASSOCIATED WITH A COMMON LOGICAL BLOCK
    • 用于解决与普通逻辑块相关的物理块的方法和装置
    • WO2004040431A2
    • 2004-05-13
    • PCT/US0328430
    • 2003-09-10
    • SANDISK CORPCHANG ROBERT CQAWAMI BAHMANSABET-SHARGHI FARSHID
    • CHANG ROBERT CQAWAMI BAHMANSABET-SHARGHI FARSHID
    • G06F3/06G06F12/02
    • G06F3/0619G06F3/064G06F3/0679G06F12/0246
    • Methods and apparatus for determining which of a plurality of physical blocks associated with a logical block is more recently associated with the logical block are disclosed. According to one aspect of the present invention, a method for resolving associations of a first physical block and a second physical block to a logical block associated with a non-volatile memory system includes obtaining a first identifier associated with the first physical block and obtaining a second identifier associated with the second physical block. The identifiers are compared to ascertain whether the first identifier indicates that the first physical block is more recently associated with the logical block. The method also includes completing an operation arranged to provide contents associated with the logical block to the first physical block when it is determined that the first identifier indicates that the first physical block is more newly associated with the logical block.
    • 公开了用于确定与逻辑块相关联的多个物理块中的哪一个最近与逻辑块相关联的方法和装置。 根据本发明的一个方面,一种用于解决第一物理块和第二物理块与与非易失性存储器系统相关联的逻辑块的关联的方法包括获得与第一物理块相关联的第一标识符并获得 与第二物理块相关联的第二标识符。 比较标识符以确定第一标识符是否指示第一物理块最近与逻辑块相关联。 当确定第一标识符指示第一物理块更新地与逻辑块相关联时,该方法还包括完成被布置为将与逻辑块相关联的内容提供给第一物理块的操作。
    • 5. 发明申请
    • MEMORY DEVICE UPGRADE
    • 存储设备升级
    • WO2010021975A3
    • 2010-04-22
    • PCT/US2009054015
    • 2009-08-17
    • SANDISK CORPYUAN POCHANG ROBERT CSABET-SHARGHI FARSHIDYAN MEIQAWAMI BAHMAN
    • YUAN POCHANG ROBERT CSABET-SHARGHI FARSHIDYAN MEIQAWAMI BAHMAN
    • G06F21/10
    • G06F21/10G06F2221/0711G06F2221/0782
    • Technology for replacing a first storage unit operatively coupled to a device is provided. Content of the first storage unit is sent to a new storage unit that serves as the replacement of the first storage unit. In one embodiment, the content is first sent to a trusted third-party server and then transferred from the server to the new storage unit. A portion of the content on the new storage unit is adjusted in one embodiment to maintain content security features that were implemented in the first storage unit. The upgrading can be performed under the control of a software entity that is installed on the device. In various embodiments, the first storage unit may be bound to a third storage unit prior to the upgrade process. In such cases, the process can include measures to bind the new storage unit to the third storage unit.
    • 提供了用于更换可操作地耦合到设备的第一存储单元的技术。 第一存储单元的内容被发送到用作第一存储单元的替换的新存储单元。 在一个实施例中,内容首先被发送到可信的第三方服务器,然后从服务器转移到新的存储单元。 在一个实施例中调整新存储单元上的内容的一部分以维持在第一存储单元中实现的内容安全特征。 升级可以在设备上安装的软件实体的控制下执行。 在各种实施例中,第一存储单元可以在升级过程之前被绑定到第三存储单元。 在这种情况下,该过程可以包括将新存储单元绑定到第三存储单元的措施。
    • 6. 发明申请
    • METHOD AND SYSTEM FOR MANAGING KEYS AND/OR RIGHTS OBJECTS
    • 管理对象和/或权利对象的方法和系统
    • WO2007094874A3
    • 2007-12-06
    • PCT/US2006060928
    • 2006-11-15
    • SANDISK CORPRASIZADE OKTAYQAWAMI BAHMANJOGAND-COULOMB FABRICECHANG ROBERT CSABET-SHARGHI FARSHID
    • RASIZADE OKTAYQAWAMI BAHMANJOGAND-COULOMB FABRICECHANG ROBERT CSABET-SHARGHI FARSHID
    • G06F21/10G06F21/78
    • G06F21/78G06F21/10
    • One or more rights objects (RO) files may be used for storing RO's preferably in the protected area available only to authenticated users. A RO navigation file is stored preferably in an unprotected public area containing status bits, where each status bit identifies whether a location in a RO file contains a valid RO or not. Preferably, there is a one-to-one correspondence between the location for a RO in a RO file and a location in the RO navigation file for the status bit which identifies whether its corresponding location in the RO file contains a valid RO or not. Whether a particular location in a RO file contains a valid RO or not can be found by checking its corresponding status bit in the RO navigation file. By finding out whether a particular location in a RO file contains a valid RO or not in this manner, it is possible to delete ROs without having to go through an authentication process. The process of finding an empty slot in the RO file for storing a new RO is also simplified. This greatly increases the efficiency of RO management. A similar system may be used for management of content encryption/ encryption keys for protecting content files.
    • 可以使用一个或多个权限对象(RO)文件来存储RO,优选地在仅对经认证的用户可用的保护区域中。 RO导航文件优选地存储在包含状态位的未受保护的公共区域中,其中每个状态位识别RO文件中的位置是否包含有效的RO。 优选地,在RO文件中的RO的位置与用于状态位的RO导航文件中的位置之间存在一一对应关系,该状态位标识其在RO文件中的相应位置是否包含有效的RO。 通过检查RO导航文件中相应的状态位,可以找到RO文件中的特定位置是否包含有效的RO。 通过查找RO文件中的特定位置是否包含有效的RO,以这种方式,可以删除RO而无需经过身份验证过程。 在RO文件中找到用于存储新的RO的空槽的过程也被简化。 这大大提高了RO管理的效率。 类似的系统可以用于管理用于保护内容文件的内容加密/加密密钥。
    • 8. 发明申请
    • WEAR LEVELING IN NON-VOLATILE STORAGE SYSTEMS
    • 非易失性存储系统中的磨损水平
    • WO2004040578A3
    • 2004-07-15
    • PCT/US0328194
    • 2003-09-10
    • SANDISK CORPCHANG ROBERTQAWAMI BAHMANSABET-SHARGHI FARSHID
    • CHANG ROBERTQAWAMI BAHMANSABET-SHARGHI FARSHID
    • G06F12/02G11C16/34
    • G06F12/0246G06F2212/1036G06F2212/7211G11C16/349
    • Methods and apparatus for performing wear leveling in a non-volatile memory system are disclosed. According to one aspect of the present invention, a method for allocating non-volatile memory that is divided into elements includes grouping the elements into a first group, a second group, and a third group. The first group includes erased elements with relatively low wear and the second group includes erased elements with relatively high wear. The method also includes determining when a first element included in the third group is to be replaced by a second element included in the first group. Contents of the first element are copied into the second element obtained from the first group. The contents are then erased from the first element, and the second element is associated with the third group. Associating the second element with the third group includes substantially disassociating the second element from the first group.
    • 公开了用于在非易失性存储器系统中执行磨损均衡的方法和设备。 根据本发明的一个方面,用于分配被划分为元素的非易失性存储器的方法包括将元素分组为第一组,第二组和第三组。 第一组包括磨损相对较低的擦除元件,第二组包括磨损较高的擦除元件。 该方法还包括确定包括在第三组中的第一元素何时将被包括在第一组中的第二元素替换。 第一个元素的内容被复制到从第一个组获得的第二个元素中。 内容然后从第一个元素中删除,第二个元素与第三个组关联。 将第二元素与第三组相关联包括将第二元素与第一组基本分离。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR GROUPING PAGES WITHIN A BLOCK
    • 在块中分组页的方法和装置
    • WO2004040453A2
    • 2004-05-13
    • PCT/US0328047
    • 2003-09-10
    • SANDISK CORPCHANG ROBERT CQAWAMI BAHMANSABET-SHARGHI FARSHID
    • CHANG ROBERT CQAWAMI BAHMANSABET-SHARGHI FARSHID
    • G06F12/00G06F12/02
    • G06F12/0246
    • Methods and apparatus for efficiently enabling pages within a block to be accessed are disclosed. According to one aspect of the present invention, a method for writing data into a first block in a non-volatile memory which includes pages that are grouped into groups which each include two or more pages involves determining when a first group is available to receive the data. When it is determined that the first group is available to receive the data, the data is written into a first page included in the first group. The method also includes determining when a second group is available to receive the data if it is determined that the first group is not available to receive the data, and writing the data into a second page included in the second group when it is determined that the second group is available to receive the data.
    • 公开了用于有效地启用要访问的块内的页面的方法和装置。 根据本发明的一个方面,一种将数据写入非易失性存储器中的第一块中的方法,所述非易失性存储器包括分组为分组的页面,每个组包括两个或多个页面,包括确定第一组何时可用于接收 数据。 当确定第一组可用于接收数据时,数据被写入包括在第一组中的第一页。 该方法还包括如果确定第一组不可用于接收数据,则确定第二组何时可用于接收数据,并且当确定第二组中确定第 第二组可以接收数据。