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    • 2. 发明授权
    • Page and block management algorithm for NAND flash
    • NAND闪存的页面和块管理算法
    • US07680977B2
    • 2010-03-16
    • US11779804
    • 2007-07-18
    • Jianjun LuoChris TsuCharles Chung LeeDavid Queichang Chow
    • Jianjun LuoChris TsuCharles Chung LeeDavid Queichang Chow
    • G06F12/00
    • G06F12/0246G06F12/0292G06F13/28G06F2212/1036G06F2212/7211
    • A flash controller is adapted to communicate with a host and the flash memory and including volatile memory configured to store a page-block table of logical addresses addressable by the physical addresses. The logical addresses are used by the controller to identify the blocks. The table has an address mapping table and a property value table, the property value table includes property values, each of the property values being increased in value every time a block is written up to a maximum value and being associated with a block of a predetermined group of blocks and indicative of the number of times a block has been written, the property values corresponding to the logical addresses of the address mapping table, wherein the maximum number the property values of the predetermined group of blocks take on is adjustably different than the maximum number the property values of another group of blocks.
    • 闪存控制器适于与主机和闪存进行通信,并且包括被配置为存储可通过物理地址寻址的逻辑地址的页块表的易失性存储器。 逻辑地址由控制器用于识别块。 该表具有地址映射表和属性值表,属性值表包括属性值,每当一个块写入最大值并且与预定的块相关联时,每个属性值都被增加, 指示块的写入次数的一组块,对应于地址映射表的逻辑地址的属性值,其中预定块组的属性值的最大数量可以与 最大数量的另一组块的属性值。
    • 3. 发明授权
    • Source and shadow wear-leveling method and apparatus
    • 源和阴影磨损均衡方法和装置
    • US07818492B2
    • 2010-10-19
    • US11767417
    • 2007-06-22
    • Jianjun LuoChris TsuCharles Chung LeeDavid Queichang Chow
    • Jianjun LuoChris TsuCharles Chung LeeDavid Queichang Chow
    • G06F13/00
    • G06F13/28G06F12/0246G06F12/0292G06F2212/1036G06F2212/7211
    • A flash memory system includes flash memory organized into a plurality of blocks of pages for storage of information, a page including data and spare, the blocks being identifiable, within the flash memory, by a physical address. The system further has a flash controller for communicating with a host and the flash memory and includes volatile memory for storing a source-shadow table of logical addresses identifying blocks addressable by the physical addresses. The source-shadow table has an address mapping table and a property value table. The property value table is used to store property values, each of which is associated with a block of a predetermined group of blocks and is indicative of the number of times a block has been written since the last erase operation performed thereon. The property values correspond to the logical addresses of the address mapping table, wherein a block having been written no more than two times is re-written to different areas of the flash memory without requiring an erase operation.
    • 闪速存储器系统包括组织成多个页面块的闪存,用于存储信息,包括数据和备用的页面,所述块可被闪存存储器内的物理地址识别。 该系统还具有用于与主机和闪速存储器进行通信的闪存控制器,并且包括用于存储识别通过物理地址可寻址的块的逻辑地址的源影子表的易失性存储器。 source-shadow表有一个地址映射表和一个属性值表。 属性值表用于存储属性值,每个属性值与预定块块组相关联,并且表示自上次执行的上次擦除操作以来写入块的次数。 属性值对应于地址映射表的逻辑地址,其中已经写入不超过两次的块被重写到闪速存储器的不同区域,而不需要擦除操作。
    • 4. 发明授权
    • Partial-write-collector algorithm for multi level cell (MLC) flash
    • 用于多级单元(MLC)闪存的部分写入 - 收集器算法
    • US07769944B2
    • 2010-08-03
    • US11774906
    • 2007-07-09
    • Jianjun LuoChris TsuCharles Chung LeeDavid Queichang Chow
    • Jianjun LuoChris TsuCharles Chung LeeDavid Queichang Chow
    • G06F12/00
    • G11C16/102G06F8/65G11C2211/5641
    • A flash memory system includes a multi level cell (MLC) flash memory organized into blocks and having pages of information, which has data and spare. The MLC flash memory includes at least a temporary area to store at least a portion of a page of information during a partial write operation. The MLC flash memory stores a page of information into a block identified by a target physical address. The flash memory system further includes a flash card micro-controller causes communication between a host flash card controller and the MLC flash memory and includes a buffer memory configured to store a portion of a page of information, where the micro-controller writes the at least a portion of a page of information to the temporary area and later copies the written at least a portion of a page of information into the block identified by a target physical address.
    • 闪存系统包括组织成块并具有数据和备用的信息页的多级单元(MLC)闪存。 在部分写入操作期间,MLC闪速存储器至少包括用于存储信息页的至少一部分的临时区域。 MLC闪速存储器将一页信息存储到由目标物理地址识别的块中。 闪存系统还包括闪存卡微控制器引起主机闪存卡控制器和MLC闪速存储器之间的通信,并且包括被配置为存储信息页的一部分的缓冲存储器,其中微控制器写入至少 信息页面的一部分到临时区域,并且稍后将写入信息页的至少一部分复制到由目标物理地址识别的块中。
    • 5. 发明申请
    • MEMORY CARD WITH POWER SAVING
    • 存储卡与省电
    • US20090055667A1
    • 2009-02-26
    • US11841550
    • 2007-08-20
    • Jianjun LuoDavid Queichang Chow
    • Jianjun LuoDavid Queichang Chow
    • G06F1/32G06F1/04
    • G06F1/3203G06F1/324G06F1/3275Y02D10/126Y02D10/14
    • A memory system includes power saving arbitrator responsive to a clock oscillator and having a first clock rate. The power saving arbitrator includes an active enable circuit responsive to a host clock and a host command and operative to generate an active enable signal for causing the power saving arbitrator to generate a core logic/memories signal having a second clock rate that is adjustably lower in rate than the first clock rate, said active enable circuit operative to detect the absence of a host command for a predetermined period of time and when the predetermined period of time exceeds a threshold value, the power saving arbitrator operative to reduce the second clock rate.
    • 存储器系统包括响应于时钟振荡器并具有第一时钟速率的节电仲裁器。 省电仲裁器包括响应于主机时钟和主机命令的有效使能电路,并且可操作以产生有效使能信号,以使得省电仲裁器产生具有可调节地较低的第二时钟速率的核心逻辑/存储器信号 所述有效使能电路可操作以在预定时间段内检测到主机命令的不存在,并且当所述预定时间段超过阈值时,所述节电仲裁器可操作地降低所述第二时钟速率。
    • 6. 发明授权
    • Memory card with power saving
    • 存储卡省电
    • US07895457B2
    • 2011-02-22
    • US11841550
    • 2007-08-20
    • Jianjun LuoDavid Queichang Chow
    • Jianjun LuoDavid Queichang Chow
    • G06F1/00G06F1/32G06F12/00
    • G06F1/3203G06F1/324G06F1/3275Y02D10/126Y02D10/14
    • A memory system includes power saving arbitrator responsive to a clock oscillator and having a first clock rate. The power saving arbitrator includes an active enable circuit responsive to a host clock and a host command and operative to generate an active enable signal for causing the power saving arbitrator to generate a core logic/memories signal having a second clock rate that is adjustably lower in rate than the first clock rate, said active enable circuit operative to detect the absence of a host command for a predetermined period of time and when the predetermined period of time exceeds a threshold value, the power saving arbitrator operative to reduce the second clock rate.
    • 存储器系统包括响应于时钟振荡器并具有第一时钟速率的节电仲裁器。 省电仲裁器包括响应于主机时钟和主机命令的有效使能电路,并且可操作以产生有效使能信号,以使得省电仲裁器产生具有可调节地较低的第二时钟速率的核心逻辑/存储器信号 所述有效使能电路可操作以在预定时间段内检测到主机命令的不存在,并且当所述预定时间段超过阈值时,所述节电仲裁器可操作地降低所述第二时钟速率。