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    • 5. 发明授权
    • Magnetic random access memory (MRAM) read with reduced disturb failure
    • 磁性随机存取存储器(MRAM)以减少的干扰故障读取
    • US08570797B2
    • 2013-10-29
    • US13035006
    • 2011-02-25
    • Jung Pill KimTae Hyun KimKangho Lee
    • Jung Pill KimTae Hyun KimKangho Lee
    • G11C11/14
    • G11C11/1673G11C11/1693
    • Magnetic tunnel junctions (MTJs) in magnetic random access memory (MRAM) are subject to read disturb events when the current passing through the MTJ causes a spontaneous switching of the MTJ due to spin transfer torque (STT) from a parallel state to an anti-parallel state or from an anti-parallel state to a parallel state. Because the state of the MTJ corresponds to stored data, a read disturb event may cause data loss in MRAM devices. Read disturb events may be reduced by controlling the direction of current flow through the MTJ. For example, the current direction through a reference MTJ may be selected based on the state of the reference MTJ. In another example, the current direction through a data or reference MTJ may be alternated such that the MTJ is only subject to read disturb events during approximately half the read operations on the MTJ.
    • 磁流体随机存取存储器(MRAM)中的磁隧道结(MTJ)在经过MTJ的电流导致由于自旋转移转矩(STT)从平行状态到抗反射的MTJ自发切换时,受到读取干扰事件, 平行状态或从反平行状态到并行状态。 因为MTJ的状态对应于存储的数据,读取干扰事件可能导致MRAM设备中的数据丢失。 通过控制通过MTJ的电流的方向可以减少读取干扰事件。 例如,可以基于参考MTJ的状态来选择通过参考MTJ的当前方向。 在另一示例中,可以交替通过数据或参考MTJ的当前方向,使得MTJ仅在MTJ上的大约一半的读取操作期间经受读取干扰事件。
    • 8. 发明授权
    • Switchgear apparatus
    • 开关装置
    • US07910847B2
    • 2011-03-22
    • US12853930
    • 2010-08-10
    • Osamu TakaharaTae Hyun KimTomotaka YanoAkihiko Imagi
    • Osamu TakaharaTae Hyun KimTomotaka YanoAkihiko Imagi
    • H01H1/64
    • H01H3/60H01H33/38H01H33/666
    • A switchgear apparatus is provided in which an impact induced by a close operation is mitigated, featuring space saving and high reliability with low costs.The switchgear apparatus includes a switching unit 3 that is composed of a fixed electrode 1 and a movable electrode 2; a movable shaft 4 that is extended from the movable electrode 2; an operating mechanism 5 that produces driving force and transfers the driving force to the movable shaft 4; a switching-unit holder 6 that holds the switching unit 3 and the movable shaft 4 thereinside; and a holder supporting unit 7 that has a fixing plane so as to fix the switching-unit holder 6 thereonto. The switchgear apparatus is arranged in such a manner that the holder supporting unit 7 serving as the fixing plane is constituted of a plurality of plates layered in the axial direction along the movable shaft 4. In a case of the close operation, because kinetic energy in the overall system is consumed by the friction generated between the layered plates owing to distortion of the layered plates, energy that allows the movable electrode 2 to bounce back and forth is lowered, so that it is possible to shorten a chattering time.
    • 提供了一种开关装置,其中减轻了由紧密操作引起的冲击,具有节省空间并且具有低成本的高可靠性。 开关装置包括由固定电极1和可动电极2构成的开关单元3; 从可动电极2延伸的可动轴4; 产生驱动力并将驱动力传递到可动轴4的操作机构5; 切换单元保持器6,其将切换单元3和可动轴4保持在其内部; 以及具有固定平面以将切换单元保持器6固定在其上的保持器支撑单元7。 开关装置的设置方式是,作为固定平面的保持器支撑单元7由沿着可动轴4的轴向层叠的多个板构成。在紧密操作的情况下,由于动能 由于层叠板的变形,整体系统被层压板之间产生的摩擦所消耗,使得可动电极2来回弹性的能量降低,从而可以缩短抖动时间。
    • 9. 发明授权
    • Switchgear apparatus
    • 开关装置
    • US07812273B2
    • 2010-10-12
    • US11835690
    • 2007-08-08
    • Osamu TakaharaTae Hyun KimTomotaka YanoAkihiko Imagi
    • Osamu TakaharaTae Hyun KimTomotaka YanoAkihiko Imagi
    • H01H1/64
    • H01H3/60H01H33/38H01H33/666
    • A switchgear apparatus is provided in which an impact induced by a close operation is mitigated, featuring space saving and high reliability with low costs.The switchgear apparatus includes a switching unit 3 that is composed of a fixed electrode 1 and a movable electrode 2; a movable shaft 4 that is extended from the movable electrode 2; an operating mechanism 5 that produces driving force and transfers the driving force to the movable shaft 4; a switching-unit holder 6 that holds the switching unit 3 and the movable shaft 4 thereinside; and a holder supporting unit 7 that has a fixing plane so as to fix the switching-unit holder 6 thereonto. The switchgear apparatus is arranged in such a manner that the holder supporting unit 7 serving as the fixing plane is constituted of a plurality of plates layered in the axial direction along the movable shaft 4. In a case of the close operation, because kinetic energy in the overall system is consumed by the friction generated between the layered plates owing to distortion of the layered plates, energy that allows the movable electrode 2 to bounce back and forth is lowered, so that it is possible to shorten a chattering time.
    • 提供了一种开关装置,其中减轻了由紧密操作引起的冲击,具有节省空间并且具有低成本的高可靠性。 开关装置包括由固定电极1和可动电极2构成的开关单元3; 从可动电极2延伸的可动轴4; 产生驱动力并将驱动力传递到可动轴4的操作机构5; 切换单元保持器6,其将切换单元3和可动轴4保持在其内部; 以及具有固定平面以将切换单元保持器6固定在其上的保持器支撑单元7。 开关装置的设置方式是,作为固定平面的保持器支撑单元7由沿着可动轴4的轴向层叠的多个板构成。在紧密操作的情况下,由于动能 由于层叠板的变形,整体系统被层压板之间产生的摩擦所消耗,使得可动电极2来回弹性的能量降低,从而可以缩短抖动时间。