公开(公告)号：US08924636B2

公开(公告)日：2014-12-30

申请号：US13609991

申请日：2012-09-11

申请人： Takashi Hirao ,  Hirokuni Yano ,  Aurelien Nam Phong Tran ,  Mitsunori Tadokoro ,  Hiroki Matsudaira ,  Tatsuya Sumiyoshi ,  Yoshimi Niisato ,  Kenji Tanaka

发明人： Takashi Hirao ,  Hirokuni Yano ,  Aurelien Nam Phong Tran ,  Mitsunori Tadokoro ,  Hiroki Matsudaira ,  Tatsuya Sumiyoshi ,  Yoshimi Niisato ,  Kenji Tanaka

IPC分类号： G06F12/10 ,  G06F12/02

CPC分类号： G06F12/0246 ,  G06F12/1009 ,  G06F2212/1032 ,  G06F2212/7201 ,  G11C16/349

摘要： A management information generating method wherein logical and physical block addresses (BAs) of continuous addresses are associated with each other in the BA translation table. When a logical block is constructed, a value is set for a maximum number of allowable defective physical blocks. A logical block having fewer defects than the set number is set usable, and a logical block having more defects than the set number is set unusable. System logical block construction is performed to preferentially select physical blocks from a plane list including a large number of usable blocks to equalize the number of usable blocks in each plane list. It is determined whether the number of free blocks is insufficient on the basis of a first management unit and whether the storage area for the indicated capacity can be reserved on the basis of the management unit different from the first unit.

摘要翻译： 一种管理信息生成方法，其中连续地址的逻辑和物理块地址（BA）在BA转换表中彼此相关联。 当构建逻辑块时，为允许的有缺陷的物理块的最大数量设置一个值。 具有比设定号码少的缺陷的逻辑块被设置为可用，并且具有比设定号码多的缺陷的逻辑块被设置为不可用。 执行系统逻辑块构造以从包括大量可用块的平面列表中优先选择物理块以均衡每个平面列表中的可用块的数量。 基于第一管理单元确定空闲块的数量是否不足，以及是否可以基于与第一单元不同的管理单元来保留指示容量的存储区域。

公开(公告)号：US20110231610A1

公开(公告)日：2011-09-22

申请号：US12884844

申请日：2010-09-17

申请人： Hirokuni Yano ,  Hiroshi Yao ,  Hajime Yamazaki ,  Tatsuya Sumiyoshi ,  Yoshimi Niisato ,  Takahiro Totsuka

发明人： Hirokuni Yano ,  Hiroshi Yao ,  Hajime Yamazaki ,  Tatsuya Sumiyoshi ,  Yoshimi Niisato ,  Takahiro Totsuka

IPC分类号： G06F12/00 ,  G06F12/08

CPC分类号： G06F12/0246 ,  G06F12/0804 ,  G06F2212/7205

摘要： According to one embodiment, a free blocks included in a nonvolatile semiconductor memory are classified into a plurality of free block management lists. When a free block is acquired at normal priority, the free block is acquired from the free block management list in which a number of free blocks is larger than a first threshold. When a free block is acquired at high priority, the free block is acquired from the free block management list irrespective of the first threshold.

摘要翻译： 根据一个实施例，包括在非易失性半导体存储器中的自由块被分类为多个空闲块管理列表。 当以正常优先级获取空闲块时，从多个空闲块大于第一阈值的空闲块管理列表中获取空闲块。 当以高优先级获取空闲块时，从空闲块管理列表获取空闲块，而与第一阈值无关。

公开(公告)号：US08266396B2

公开(公告)日：2012-09-11

申请号：US12884844

申请日：2010-09-17

申请人： Hirokuni Yano ,  Hiroshi Yao ,  Hajime Yamazaki ,  Tatsuya Sumiyoshi ,  Yoshimi Niisato ,  Takahiro Totsuka

发明人： Hirokuni Yano ,  Hiroshi Yao ,  Hajime Yamazaki ,  Tatsuya Sumiyoshi ,  Yoshimi Niisato ,  Takahiro Totsuka

IPC分类号： G06F12/00

CPC分类号： G06F12/0246 ,  G06F12/0804 ,  G06F2212/7205

摘要： According to one embodiment, a free blocks included in a nonvolatile semiconductor memory are classified into a plurality of free block management lists. When a free block is acquired at normal priority, the free block is acquired from the free block management list in which a number of free blocks is larger than a first threshold. When a free block is acquired at high priority, the free block is acquired from the free block management list irrespective of the first threshold.

摘要翻译： 根据一个实施例，包括在非易失性半导体存储器中的自由块被分类为多个空闲块管理列表。 当以正常优先级获取空闲块时，从多个空闲块大于第一阈值的空闲块管理列表中获取空闲块。 当以高优先级获取空闲块时，从空闲块管理列表获取空闲块，而与第一阈值无关。

公开(公告)号：US20130227246A1

公开(公告)日：2013-08-29

申请号：US13609991

申请日：2012-09-11

申请人： Takashi HIRAO ,  Hirokuni YANO ,  Aurelien Nam Phong TRAN ,  Mitsunori TADOKORO ,  Hiroki MATSUDAIRA ,  Tatsuya SUMIYOSHI ,  Yoshimi NIISATO ,  Kenji TANAKA

发明人： Takashi HIRAO ,  Hirokuni YANO ,  Aurelien Nam Phong TRAN ,  Mitsunori TADOKORO ,  Hiroki MATSUDAIRA ,  Tatsuya SUMIYOSHI ,  Yoshimi NIISATO ,  Kenji TANAKA

IPC分类号： G06F12/10

CPC分类号： G06F12/0246 ,  G06F12/1009 ,  G06F2212/1032 ,  G06F2212/7201 ,  G11C16/349

摘要： A management information generating method wherein logical and physical block addresses (BAs) of continuous addresses are associated with each other in the BA translation table. When a logical block is constructed, an allowable value is set for the number of defective physical blocks. A logical block having fewer defects than the set number is set usable, and a logical block having more defects than the set number is set unusable. System logical block construction is performed to preferentially select physical blocks from a plane list including a large number of usable blocks to equalize the number of usable blocks in each plane list. It is determined whether the number of free blocks is insufficient on the basis of a first management unit and whether the storage area for the indicated capacity can be reserved on the basis of the management unit different from the first unit.

摘要翻译： 一种管理信息生成方法，其中连续地址的逻辑和物理块地址（BA）在BA转换表中彼此相关联。 当构建逻辑块时，为有缺陷的物理块的数量设置允许值。 具有比设定号码少的缺陷的逻辑块被设置为可用，并且具有比设定号码多的缺陷的逻辑块被设置为不可用。 执行系统逻辑块构造以从包括大量可用块的平面列表中优先选择物理块以均衡每个平面列表中的可用块的数量。 基于第一管理单元确定空闲块的数量是否不足，以及是否可以基于与第一单元不同的管理单元来保留指示容量的存储区域。