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1. 发明申请

US20170285948A1 METHOD AND SYSTEM FOR MANAGING DATA IN NON-VOLATILE MEMORY 有权
公开(公告)号：US20170285948A1
公开(公告)日：2017-10-05
申请号：US15087104
申请日：2016-03-31
申请人： SanDisk Technologies Inc.
发明人： Nicholas James Thomas , Joseph Meza
IPC分类号： G06F3/06
CPC分类号： G06F3/064 , G06F3/0604 , G06F3/0616 , G06F3/0647 , G06F3/0659 , G06F3/0679 , G06F12/0246 , G06F2212/7211
摘要： Methods and systems for managing data storage in a non-volatile memory system are disclosed. The method may include receiving data, determining a data classification for the received data from a predetermined plurality of data classifications, writing the received data to an open block having only data of a same data classification as the determined data classification and, upon completely programming the open block, associating an epoch indicator where the epoch indicator defines a time period within which the block was created. When a block reclaim trigger is detected, only data within a same data classification and epoch may be reclaimed. An incrementing epoch indicator identifies a predetermined time granularity and is assigned to data such that earlier data and newer data are distinguishable. A system to implement the method may include a non-volatile memory and a controller configured to track and apply epoch and data-type classification information for data.

2. 发明授权

US09626312B2 Storage region mapping for a data storage device 有权
公开(公告)号：US09626312B2
公开(公告)日：2017-04-18
申请号：US14802783
申请日：2015-07-17
申请人： SANDISK TECHNOLOGIES INC.
发明人： Marina Frid , Igor Genshaft , Nicholas James Thomas
IPC分类号： G06F12/00 , G06F13/18 , G06F12/1009 , G06F12/02 , G06F3/06
CPC分类号： G06F13/18 , G06F3/061 , G06F3/064 , G06F3/0658 , G06F3/0688 , G06F12/0246 , G06F12/1009 , G06F2212/1024 , G06F2212/656 , G06F2212/7201 , G06F2212/7205 , G06F2212/7208
摘要： A data storage device includes a controller coupled to multiple groups of data storage dies, such as a meta-meta-die. The controller is configured to write data to a first meta-block if a storage size associated with a first group of data storage dies associated with a first priority is greater than or equal to a threshold storage size. The first meta-block includes a respective block of each data storage die of the first group. The controller is further configured to write the data to a second meta-block if the storage size associated with the first group is less than the threshold storage size. The second meta-block includes a respective block of each data storage die of the first group and further includes a respective block of each data storage die of the second group. Each data storage die of the second group is associated with a second priority.

3. 发明申请

US20170286291A1 METHOD AND SYSTEM FOR COMPACTING DATA IN NON-VOLATILE MEMORY 有权
公开(公告)号：US20170286291A1
公开(公告)日：2017-10-05
申请号：US15083723
申请日：2016-03-29
申请人： SanDisk Technologies Inc.
发明人： Nicholas James Thomas
IPC分类号： G06F12/02
CPC分类号： G06F12/0253 , G06F2212/1044 , G06F2212/2022 , G06F2212/7205
摘要： A system and method for compacting data in a non-volatile memory system that may reduce the need for control data updates is described. The method may include copying valid data from a source block to a destination block, and also writing new host data to the destination block, such that the offset position in the destination block of the copied data is the same as in the source block and fewer mapping table updates are needed for the copied data. The system may include a non-volatile memory system with a coarse granularity mapping table and a fine granularity mapping table where a controller in the non-volatile memory system is configured to only update the coarse granularity mapping table for compacted data written to a new block, but is configured to update both the fine and coarse granularity mapping tables for new host data written to the new block.

4. 发明授权

US09336133B2 Method and system for managing program cycles including maintenance programming operations in a multi-layer memory 有权
标题翻译：用于管理程序周期的方法和系统，包括多层存储器中的维护编程操作
公开(公告)号：US09336133B2
公开(公告)日：2016-05-10
申请号：US13826738
申请日：2013-03-14
申请人： SanDisk Technologies Inc.
发明人： Alan Welsh Sinclair , Nicholas James Thomas , Barry Wright
IPC分类号： G06F12/02 , G11C11/56
CPC分类号： G06F12/0246 , G06F2212/7202 , G11C11/56 , G11C2211/5641
摘要： A system and method for managing program cycles in a multi-layer memory are disclosed. The method includes a controller receiving a request to program data from a host and, in advance of programming data associated with the request, determining a program cycle for programming the data associated with the request. The programming cycle may be a set of a host data write programming operation and any maintenance programming operations on an amount of data already programmed in the plurality of memory layers that is necessary to provide free memory capacity for a subsequent request to program data from the host. The controller programs the data associated with the host request, and the amount of data to be programmed in maintenance operations, in predetermined programming units according to the determined program cycle.
摘要翻译：公开了一种用于管理多层存储器中的程序循环的系统和方法。该方法包括控制器，其接收来自主机的数据编程请求，并且在编程与该请求相关联的数据之前，确定用于编程与该请求相关联的数据的程序周期。编程周期可以是一组主机数据写入编程操作以及对已经在多个存储器层中编程的数据量的任何维护编程操作，这些数据量是必需的，以提供用于后续请求从主机编程数据的空闲存储器容量。控制器根据所确定的程序周期，在预定的编程单元中编程与主机请求相关联的数据以及在维护操作中要编程的数据量。

5. 发明申请

US20150186259A1 METHOD AND APPARATUS FOR STORING DATA IN NON-VOLATILE MEMORY 审中-公开
标题翻译：在非易失性存储器中存储数据的方法和装置
公开(公告)号：US20150186259A1
公开(公告)日：2015-07-02
申请号：US14144061
申请日：2013-12-30
申请人： SanDisk Technologies Inc.
发明人： Nicholas James Thomas , Jonathan Hsu , Igor Genshaft
IPC分类号： G06F12/02
CPC分类号： G06F12/0246 , G06F2212/7201
摘要： Apparatus and methods implemented therein are disclosed for storing data in flash memories. The apparatus comprises a flash memory having several physical blocks, a logical to virtual mapping table, a virtual to physical mapping table and a memory controller. The memory controller retrieves a virtual block address from the logical to virtual mapping table. The virtual block address corresponds to an entry in the virtual to physical mapping table. The entry in the virtual to physical mapping table contains a reference to a physical block. The memory controller uses the virtual block address to retrieve the reference to the physical block and stores data in the physical block. The memory controller copies the stored data from the physical block to a second physical block. The memory controller then replaces the reference to the physical block contained in the entry of the virtual to physical mapping table with a reference to the second physical block.
摘要翻译：公开了其中实现的装置和方法，用于将数据存储在闪速存储器中。该装置包括具有多个物理块的闪速存储器，逻辑到虚拟映射表，虚拟到物理映射表和存储器控制器。内存控制器从逻辑到虚拟映射表检索虚拟块地址。虚拟块地址对应于虚拟物理映射表中的条目。虚拟物理映射表中的条目包含对物理块的引用。存储器控制器使用虚拟块地址来检索对物理块的引用并将数据存储在物理块中。存储器控制器将存储的数据从物理块复制到第二物理块。存储器控制器然后用对第二物理块的引用替代对虚拟物理映射表条目中包含的物理块的引用。

6. 发明授权

US09959071B2 Method and system for managing data in non-volatile memory 有权
公开(公告)号：US09959071B2
公开(公告)日：2018-05-01
申请号：US15087104
申请日：2016-03-31
申请人： SanDisk Technologies Inc.
发明人： Nicholas James Thomas , Joseph Meza
IPC分类号： G06F12/02 , G06F3/06
CPC分类号： G06F3/064 , G06F3/0604 , G06F3/0616 , G06F3/0647 , G06F3/0659 , G06F3/0679 , G06F12/0246 , G06F2212/7211
摘要： Methods and systems for managing data storage in a non-volatile memory system are disclosed. The method may include receiving data, determining a data classification for the received data from a predetermined plurality of data classifications, writing the received data to an open block having only data of a same data classification as the determined data classification and, upon completely programming the open block, associating an epoch indicator where the epoch indicator defines a time period within which the block was created. When a block reclaim trigger is detected, only data within a same data classification and epoch may be reclaimed. An incrementing epoch indicator identifies a predetermined time granularity and is assigned to data such that earlier data and newer data are distinguishable. A system to implement the method may include a non-volatile memory and a controller configured to track and apply epoch and data-type classification information for data.

7. 发明授权

US09910773B2 Method and system for compacting data in non-volatile memory 有权
公开(公告)号：US09910773B2
公开(公告)日：2018-03-06
申请号：US15083723
申请日：2016-03-29
申请人： SanDisk Technologies Inc.
发明人： Nicholas James Thomas
IPC分类号： G06F12/02
CPC分类号： G06F12/0253 , G06F2212/1044 , G06F2212/2022 , G06F2212/7205
摘要： A system and method for compacting data in a non-volatile memory system that may reduce the need for control data updates is described. The method may include copying valid data from a source block to a destination block, and also writing new host data to the destination block, such that the offset position in the destination block of the copied data is the same as in the source block and fewer mapping table updates are needed for the copied data. The system may include a non-volatile memory system with a coarse granularity mapping table and a fine granularity mapping table where a controller in the non-volatile memory system is configured to only update the coarse granularity mapping table for compacted data written to a new block, but is configured to update both the fine and coarse granularity mapping tables for new host data written to the new block.

8. 发明授权

US09383927B2 Method and system for creating a mapping table cache from an interleaved subset of contiguous mapping data for a storage device 有权
标题翻译：用于从存储设备的连续映射数据的交织子集创建映射表高速缓存的方法和系统
公开(公告)号：US09383927B2
公开(公告)日：2016-07-05
申请号：US14289254
申请日：2014-05-28
申请人： SanDisk Technologies Inc.
发明人： Nicholas James Thomas
IPC分类号： G06F12/00 , G06F3/06 , G11C7/10
CPC分类号： G06F3/0611 , G06F3/064 , G06F3/0685 , G06F12/0246 , G06F12/0607 , G06F12/0866 , G06F2212/1016 , G06F2212/1044 , G06F2212/7201 , G06F2212/7205 , G06F2212/7208 , G11C7/1072
摘要： A method and system are disclosed for handling logical-to-physical mapping in a storage device. The method includes the storage device storing in fast access memory, such as DRAM, only a fixed-size subset of the primary mapping table in non-volatile memory, along with contiguity information of physical addresses for logical address not in the subset that are adjacent to the logical addresses in the subset. The system includes a storage device having volatile memory, non-volatile memory and a controller in communication with the volatile and non-volatile memory that is configured to carry out the method noted above.
摘要翻译：公开了用于处理存储设备中的逻辑到物理映射的方法和系统。该方法包括存储在诸如DRAM的快速存取存储器中的存储设备，只有非易失性存储器中的主映射表的固定大小的子集以及不在相邻子集中的逻辑地址的物理地址的接续信息到子集中的逻辑地址。该系统包括具有易失性存储器，非易失性存储器和与被配置为执行上述方法的易失性和非易失性存储器通信的控制器的存储设备。

9. 发明申请

US20150347026A1 METHOD AND SYSTEM FOR INTERLEAVING PIECES OF A MAPPING TABLE FOR A STORAGE DEVICE 有权
标题翻译：用于交换存储设备的映射表的方法和系统
公开(公告)号：US20150347026A1
公开(公告)日：2015-12-03
申请号：US14289254
申请日：2014-05-28
申请人： SanDisk Technologies Inc.
发明人： Nicholas James Thomas
IPC分类号： G06F3/06
CPC分类号： G06F3/0611 , G06F3/064 , G06F3/0685 , G06F12/0246 , G06F12/0607 , G06F12/0866 , G06F2212/1016 , G06F2212/1044 , G06F2212/7201 , G06F2212/7205 , G06F2212/7208 , G11C7/1072
摘要： A method and system are disclosed for handling logical-to-physical mapping in a storage device. The method includes the storage device storing in fast access memory, such as DRAM, only a fixed-size subset of the primary mapping table in non-volatile memory, along with contiguity information of physical addresses for logical address not in the subset that are adjacent to the logical addresses in the subset. The system includes a storage device having volatile memory, non-volatile memory and a controller in communication with the volatile and non-volatile memory that is configured to carry out the method noted above.
摘要翻译：公开了用于处理存储设备中的逻辑到物理映射的方法和系统。该方法包括存储在诸如DRAM的快速存取存储器中的存储设备，只有非易失性存储器中的主映射表的固定大小的子集以及不在相邻子集中的逻辑地址的物理地址的接续信息到子集中的逻辑地址。该系统包括具有易失性存储器，非易失性存储器和与被配置为执行上述方法的易失性和非易失性存储器通信的控制器的存储设备。

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