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    • 6. 发明授权
    • Semiconductor integrated circuit and leak current reducing method
    • 半导体集成电路和漏电流还原法
    • US07420857B2
    • 2008-09-02
    • US11546955
    • 2006-10-13
    • Makoto HirotaHidekazu Kikuchi
    • Makoto HirotaHidekazu Kikuchi
    • G11C11/34
    • G11C11/417
    • The present invention provides a semiconductor integrated circuit device which includes at least an SRAM memory cell array comprising a plurality of memory cells each constituted of a circuit including load MOS transistors, drive MOS transistors and transfer MOS transistors, a substrate bias generating circuit which is electrically connected to the load MOS transistors and supplies a substrate potential to the load MOS transistors during at least operation and standby, and a source bias generating circuit which is electrically connected to the drive MOS transistors and supplies a source potential to the drive MOS transistors at standby. It is possible to reduce a leak current in an SRAM memory cell during both operation and standby and reduce current consumption.
    • 本发明提供一种半导体集成电路器件,其至少包括SRAM存储单元阵列,其包括多个存储单元,每个存储单元由包括负载MOS晶体管,驱动MOS晶体管和转移MOS晶体管的电路组成,衬底偏置产生电路是电气 连接到负载MOS晶体管,并且在至少操作和待机期间将负载MOS晶体管的衬底电位提供给负载MOS晶体管;以及源极偏置产生电路,其电连接到驱动MOS晶体管,并且在待机时向驱动MOS晶体管提供源极电位 。 在运行和待机期间,可以减少SRAM存储单元中的漏电流,并降低电流消耗。
    • 9. 发明申请
    • Database retrieval apparatus, retrieval method, storage medium, and progam
    • 数据库检索装置,检索方法,存储介质和程序
    • US20070174261A1
    • 2007-07-26
    • US11717044
    • 2007-03-13
    • Hideo KuboyamaMakoto Hirota
    • Hideo KuboyamaMakoto Hirota
    • G06F17/30
    • G06F17/30575Y10S707/99933Y10S707/99942Y10S707/99943Y10S707/99944Y10S707/99945
    • It is an object of this invention to realize high-speed database retrieval. More specifically, it is an object of this invention to increase a retrieval speed when data corresponding to an input character string are retrieved from a database having a trie structure. In order to achieve the above object, a database retrieval apparatus according to the invention can retrieve data corresponding to an input character string from a database having a trie structure, and includes a plurality of child node search units for searching for a child node corresponding to the input character string at each node of the trie structure, and a setting unit for setting, in advance for each node, one of the plurality of child node search unit which is to be used at each node. Data held in the database is retrieved by searching for a child node using the child node search unit set for each node by the setting unit.
    • 本发明的目的是实现高速数据库检索。 更具体地,本发明的目的是提高当从具有特里结构的数据库检索与输入字符串相对应的数据时的检索速度。 为了实现上述目的,根据本发明的数据库检索装置可以从具有特里结构的数据库检索对应于输入字符串的数据,并且包括多个子节点搜索单元,用于搜索对应于 在所述特里结构的每个节点处的输入字符串,以及设置单元,用于为每个节点预先设置将在每个节点处使用的所述多个子节点搜索单元中的一个。 通过设置单元使用为每个节点设置的子节点搜索单元搜索子节点来检索数据库中保存的数据。