Source transistor configurations and control methods
    3.
    发明授权
    Source transistor configurations and control methods 失效
    源晶体管配置和控制方法

    公开(公告)号:US07705625B2

    公开(公告)日:2010-04-27

    申请号:US11483263

    申请日:2006-07-06

    IPC分类号: H03K19/094

    摘要: Source transistor configurations are described for reducing leakage and delay within integrated circuits. Virtual power and ground nodes are supported with the use of stacked transistor configurations, such as a two transistor stack between a first virtual supply connection and VSS, and a second virtual supply connection and VDD. Gate drives of these stacked transistors are modulated with different voltage levels in response to the operating power mode of the circuit, for example active mode, active-standby mode, and deep power-down mode. Means for driving these source stacks are described. In one embodiment separate virtual nodes are adapted for different types of circuits, such as buffers, row address strobe, and column address strobe. Other techniques, such as directional placement of the transistors is also described.

    摘要翻译: 源晶体管配置被描述为减少集成电路内的泄漏和延迟。 使用堆叠晶体管配置(例如在第一虚拟电源连接和VSS之间的两个晶体管堆叠)和第二虚拟电源连接和VDD之间来支持虚拟电源和接地节点。 这些堆叠晶体管的栅极驱动器响应于电路的工作功率模式,例如主动模式,主动待机模式和深度掉电模式,以不同的电压电平进行调制。 描述了用于驱动这些源堆栈的装置。 在一个实施例中,单独的虚拟节点适用于不同类型的电路,例如缓冲器,行地址选通和列地址选通。 还描述了诸如晶体管的定向放置的其它技术。

    Spindle motor
    6.
    发明授权
    Spindle motor 失效
    主轴电机

    公开(公告)号:US08454237B2

    公开(公告)日:2013-06-04

    申请号:US12874103

    申请日:2010-09-01

    申请人: Young Tae Kim

    发明人: Young Tae Kim

    IPC分类号: F16C32/06

    CPC分类号: F16C17/026 F16C17/246

    摘要: The spindle motor includes a rotating shaft and a sleeve. The rotating shaft has a stepped portion in a fluid dynamic pressure shafting system. The sleeve is fitted over the circumferential outer surface of the rotating shaft. A sleeve recess is formed in the inner surface of the sleeve so that the edges of the stepped portion are spaced apart from the sleeve.

    摘要翻译: 主轴电机包括旋转轴和套筒。 旋转轴在流体动压轴系中具有台阶部分。 套筒安装在旋转轴的圆周外表面上。 套筒凹部形成在套筒的内表面中,使得阶梯部分的边缘与套筒间隔开。

    Method of manufacturing hydrodynamic bearing
    7.
    发明授权
    Method of manufacturing hydrodynamic bearing 失效
    制造流体动力轴承的方法

    公开(公告)号:US08230599B2

    公开(公告)日:2012-07-31

    申请号:US12285879

    申请日:2008-10-15

    IPC分类号: B21D53/10 B23H3/00

    摘要: Disclosed herein is a method of manufacturing a hydrodynamic bearing in which a metal bearing made of sintered metal powder is internally subjected to chemical etching, to form hydrodynamic pressure grooves thereon, thus assuring a high-precision and reliable hydrodynamic bearing. The method includes: compressing metal powder that is a raw material of the bearing in a press unit, and sintering the compressed metal powder at a predetermined temperature, thus preparing a sintered bearing; removing foreign substances adhering to the sintered bearing through a deburring process, and pressing the sintered bearing into a desired shape; forming a hydrodynamic groove, configured to generate hydrodynamic pressure, on an internal surface of the shaped bearing using chemical etching; and conducting a post treatment of cleaning the bearing including the hydrodynamic grooves thereon and drying the bearing.

    摘要翻译: 本文公开了一种制造流体动力轴承的方法,其中由烧结金属粉末制成的金属轴承在内部进行化学蚀刻,以在其上形成流体动力学压力槽,从而确保高精度和可靠的流体动力轴承。 该方法包括:在压制单元中压制作为轴承原料的金属粉末,并在预定温度下烧结压缩的金属粉末,从而制备烧结轴承; 通过去毛刺处理去除附着在烧结轴承上的异物,将烧结后的轴承压制成所希望的形状; 使用化学蚀刻形成在所述成形轴承的内表面上产生流体动力学压力的流体动力槽; 并对其上包括流体动力槽的轴承进行清洗,并干燥轴承。

    Semiconductor memory device and data read method thereof
    9.
    发明授权
    Semiconductor memory device and data read method thereof 有权
    半导体存储器件及其数据读取方法

    公开(公告)号:US06295244B1

    公开(公告)日:2001-09-25

    申请号:US09617524

    申请日:2000-07-17

    IPC分类号: G11C800

    摘要: The present invention discloses a semiconductor memory device. The device includes a plurality of memory cell array blocks; a predetermined number of main buffers for resetting a predetermined number of pairs of main data lines corresponding to a predetermined number of pairs of data items output from each of the plurality of memory cell array blocks in response to a main buffer control signal, and for generating a predetermined number of pairs of data when the data of each of the predetermined number of pairs of main data lines become complementary levels, the predetermined number of pair of data being reset after a lapse of predetermined time; a predetermined number of data output buffers for respectively receiving and buffering the predetermined number of pairs of data items generated by the predetermined number of main buffers, in response to a data output buffer control signal; and data output buffer control signal generating means for generating the data output buffer control signal, the data output buffer control signal being enabled in response to a control signal and disabled after a lapse of predetermined time from the point of time at which each of the pair of data items output from the predetermined number of main buffers reaches the desired complementary levels, thereby improving data read speed.

    摘要翻译: 本发明公开了一种半导体存储器件。 该装置包括多个存储单元阵列块; 预定数量的主缓冲器,用于响应于主缓冲器控制信号来复位与从多个存储单元阵列块中的每一个输出的预定数量的数据对对应的预定数量的主数据线对,并且用于生成 当预定数量的主数据线对中的每一个的数据成为互补电平时,预定数量的数据对,预定数量的数据对在经过预定时间之后被复位; 预定数量的数据输出缓冲器,用于响应于数据输出缓冲器控制信号分别接收和缓冲由预定数量的主缓冲器产生的预定数量的数据项对; 以及数据输出缓冲器控制信号产生装置,用于产生数据输出缓冲器控制信号,数据输出缓冲器控制信号响应于控制信号被使能,并且在从该对中的每一个的时间点起经过预定​​时间后被禁用 从预定数量的主缓冲器输出的数据项达到期望的互补电平,从而提高数据读取速度。