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    • 82. 发明授权
    • DLL circuit of semiconductor memory apparatus and method of delaying and locking clock in semiconductor memory apparatus
    • 半导体存储装置的DLL电路以及延迟和锁定半导体存储装置中的时钟的方法
    • US07612591B2
    • 2009-11-03
    • US12185835
    • 2008-08-05
    • Kyoung Nam Kim
    • Kyoung Nam Kim
    • H03L7/06
    • H03L7/0814G11C7/1072G11C7/22G11C7/222G11C11/4076H03L7/091
    • A DLL circuit of a semiconductor memory apparatus includes a frequency sensing unit that generates and outputs a high frequency signal and a low frequency signal on the basis of a CAS latency signal. A clock dividing unit divides the frequency of an internal clock by a predetermined value and generates a divided clock in response with whether the high frequency signal is enabled or the low frequency signal is enabled. A phase sensing unit that switches a reference clock and a comparison clock, compares the phases thereof in accordance with whether the high frequency signal is enabled or the low frequency signal is enabled, selectively switches first and second phase control signals generated on the basis of the comparison result, and outputs the switched signals.
    • 半导体存储装置的DLL电路包括频率感测单元,其基于CAS等待时间信号生成并输出高频信号和低频信号。 时钟分频单元将内部时钟的频率除以预定值,并且响应于高频信号是使能还是使能低频信号而产生分频时钟。 切换参考时钟和比较时钟的相位感测单元根据高频信号是使能还是使能低频信号进行比较,选择性地切换基于该时钟生成的第一和第二相位控制信号 比较结果,并输出开关信号。
    • 83. 发明授权
    • Delay locked loop circuit for preventing malfunction caused by change of power supply voltage
    • 延迟锁定环电路,用于防止由电源电压变化引起的故障
    • US07573308B2
    • 2009-08-11
    • US11647219
    • 2006-12-29
    • Kyoung-Nam Kim
    • Kyoung-Nam Kim
    • H03L7/06
    • H03L7/087H03L7/0814
    • A Delay Locked Loop (DLL) circuit prevents a malfunction caused by a change of a power supply voltage, and includes a first and a second delay lines and a first and a second signal processors for controlling the first and the second delay lines, and turns off the second signal processor after DLL locking. The DLL circuit further includes a phase comparator for generating a comparison signal notifying which of phases of a first clock signal of the first delay line and a second clock signal of the second delay line precedes the other, and a signal selector for inputting an output of the second signal processor to the second delay line before the DLL locking, and inputting the comparison signal of the phase comparator to the second delay line after the DLL locking.
    • 延迟锁定回路(DLL)电路防止由电源电压变化引起的故障,并且包括第一和第二延迟线以及用于控制第一和第二延迟线的第一和第二信号处理器,并且转动 关闭第二个信号处理器后DLL锁定。 DLL电路还包括相位比较器,用于产生比较信号,该比较信号通知第一延迟线的第一时钟信号的相位和第二延迟线的第二时钟信号的哪一个相位在另一个之前的相位;以及信号选择器,用于输入 第二信号处理器在DLL锁定之前到第二延迟线,并且在DLL锁定之后将相位比较器的比较信号输入到第二延迟线。
    • 84. 发明申请
    • MAGNETIC RESONANCE IMAGING SYSTEM
    • 磁共振成像系统
    • US20080309340A1
    • 2008-12-18
    • US12046209
    • 2008-03-11
    • Zang Hee ChoYoung Bo KimKyoung Nam KimSuk Min Hong
    • Zang Hee ChoYoung Bo KimKyoung Nam KimSuk Min Hong
    • G01R33/32
    • 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。
    • 88. 发明申请
    • Semiconductor memory device capable of controlling tAC timing and method for operating the same
    • 能够控制tAC定时的半导体存储器件及其操作方法
    • US20080240327A1
    • 2008-10-02
    • US12003549
    • 2007-12-28
    • Kyoung-Nam KimHo-Youb Cho
    • Kyoung-Nam KimHo-Youb Cho
    • H03D3/24
    • G11C16/32H03L7/0812
    • A semiconductor memory device is capable of controlling a tAC with a timing margin in an output data process. The semiconductor memory device includes a delay locked loop circuit, a tAC control unit, a reference signal generating unit, and a data output block. The delay locked loop circuit produces delay locked clock signals through a delay locking operation. The tAC control unit adjusts a delay value of the delay locked clock signals in order to control a tAC timing, thereby generating output reference signals. The reference signal generating unit produces a latch reference signal in response to the delay locked clock signals. The data output block latches data in response to the latch reference signal and for outputting the latched data in response to the output reference signals.
    • 半导体存储器件能够在输出数据处理中以定时裕度来控制tAC。 半导体存储器件包括延迟锁定环电路,tAC控制单元,参考信号生成单元和数据输出块。 延迟锁定环电路通过延迟锁定操作产生延迟锁定时钟信号。 tAC控制单元调整延迟锁定时钟信号的延迟值,以便控制tAC定时,从而产生输出参考信号。 参考信号产生单元响应于延迟锁定时钟信号产生锁存参考信号。 数据输出块根据锁存参考信号锁存数据,并根据输出参考信号输出锁存数据。