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    • 6. 发明授权
    • Refresh circuit of semiconductor memory apparatus
    • 半导体存储装置的刷新电路
    • US07881109B2
    • 2011-02-01
    • US12480962
    • 2009-06-09
    • Kyoung Nam Kim
    • Kyoung Nam Kim
    • G11C16/04
    • G11C11/406G11C11/408G11C11/4094G11C2211/4065
    • A refresh circuit of a semiconductor memory apparatus includes a bank active signal generator configured to selectively enable a plurality of bank active signals in response to a piled signal and disable the plurality of bank active signals in response to a plurality of precharge pulses when a refresh signal is enabled; a precharge pulse generator configured to generate a plurality of preliminary precharge pulses in response to the plurality of bank active signals; a delaying unit configured to generate a plurality of preliminary delay precharge pulses by delaying the plurality of preliminary precharge pulses; and a selecting unit configured to selectively output the plurality of preliminary precharge pulses or the plurality of preliminary delay precharge pulses as the plurality of precharge pulses in response to the piled signal.
    • 半导体存储器装置的刷新电路包括一个存储体有源信号发生器,其被配置为响应堆叠信号有选择地启用多个存储体有效信号,并且当刷新信号时响应于多个预充电脉冲禁用多个存储体有效信号 已启用 预充电脉冲发生器,被配置为响应于所述多个存储体活动信号而产生多个初步预充电脉冲; 延迟单元,被配置为通过延迟所述多个初步预充电脉冲来产生多个初步延迟预充电脉冲; 以及选择单元,被配置为响应于所述堆叠信号而选择性地输出所述多个预充电脉冲或所述多个预备延迟预充电脉冲作为所述多个预充电脉冲。
    • 8. 发明授权
    • Magnetic resonance imaging system
    • 磁共振成像系统
    • US07746073B2
    • 2010-06-29
    • US12046209
    • 2008-03-11
    • Zang Hee ChoYoung Bo KimKyoung Nam KimSuk Min Hong
    • Zang Hee ChoYoung Bo KimKyoung Nam KimSuk Min Hong
    • G01V3/00
    • G01R33/34046G01R33/34069G01R33/3415
    • A magnetic resonance imaging system is provided, which can provide the homogeneous magnetic field to obtain a head anatomic image with a high resolution and high SNR by coaxially disposing a receive-only phased array antenna inside a transmit-only antenna with a predetermined gap, and thereby a detailed and accurate image of a man's head can be obtained. In the present invention, the system comprises: a transmit-only antenna comprising at least two saddle quadrature antennas connected with each other to form a ring shape, one of the connections being a joint and the remaining connections being formed in an overlapping fashion; and a receive-only phased array antenna comprising a plurality of receive-only antennas connected with each other to form a ring shape, one of the connections being a joint and the remaining connections being formed in an overlapping fashion, wherein an inner diameter of the receive-only phased array antenna is shorter than that of the transmit-only antenna, and the receive-only phased array antenna is coaxially disposed inside the transmit-only antenna with a predetermined gap.
    • 提供一种磁共振成像系统,其可以提供均匀的磁场以通过在仅具有预定间隙的仅发射天线内同轴地布置仅接收相位阵列天线来获得具有高分辨率和高SNR的头部解剖图像,以及 从而可以获得人的头部的详细和准确的图像。 在本发明中,该系统包括:包括至少两个彼此连接的鞍形正交天线以形成环形的仅发射天线,其中一个连接是接头,其余连接以重叠的方式形成; 以及接收相位阵列天线,其包括彼此连接以形成环形的多个仅接收天线,所述连接中的一个是接头,并且所述剩余连接以重叠的方式形成,其中, 只接收相位阵列天线短于仅发射天线的天线,并且仅接收相位阵列天线以预定间隙同轴地布置在仅发射天线内。