Semiconductor memory device and method for operating the same
    13.
    发明授权
    Semiconductor memory device and method for operating the same 有权
    半导体存储器件及其操作方法

    公开(公告)号:US07848178B2

    公开(公告)日:2010-12-07

    申请号:US12006121

    申请日:2007-12-31

    IPC分类号: G11C8/00

    摘要: Semiconductor memory device and method for operating the same includes a phase detection unit configured to compare a phase of a first reference clock and a phase of a second divided reference clock to output a comparison result signal and a phase control and division unit configured to generate the second divided reference clock by dividing a second reference clock by a predetermined ratio according to the comparison result signal outputted from the phase detection unit and adjusting a phase of the second reference clock.

    摘要翻译: 半导体存储器件及其操作方法包括:相位检测单元,被配置为比较第一参考时钟的相位和第二分频基准时钟的相位,以输出比较结果信号;相位控制和分频单元,被配置为产生 根据从相位检测单元输出的比较结果信号,将第二参考时钟除以预定比例,并调整第二参考时钟的相位,来分配第二分频参考时钟。

    Digital delay locked loop circuit using mode register set
    15.
    发明申请
    Digital delay locked loop circuit using mode register set 有权
    使用模式寄存器组的数字延迟锁定环路电路

    公开(公告)号:US20090119533A1

    公开(公告)日:2009-05-07

    申请号:US12005917

    申请日:2007-12-28

    IPC分类号: G06F1/12 G06F1/08 G06F11/07

    CPC分类号: G06F1/12 G06F11/1008

    摘要: A semiconductor memory device includes a mode register set for establishing information on a delay time, a delay time calculator for calculating an I/O path delay time of a data clock on a basis of a unit period of a system clock, and a delay locked clock generator for reflecting in the data clock a value of subtracting an output of the delay time calculator from the information established in the mode register set.

    摘要翻译: 半导体存储器件包括用于建立关于延迟时间的信息的模式寄存器组,用于基于系统时钟的单位周期计算数据时钟的I / O路径延迟时间的延迟时间计算器和延迟锁定 时钟发生器,用于在数据时钟中反映从在模式寄存器组中建立的信息中减去延迟时间计算器的输出的值。

    Infrared sensor module
    18.
    发明申请
    Infrared sensor module 有权
    红外传感器模块

    公开(公告)号:US20120119091A1

    公开(公告)日:2012-05-17

    申请号:US13317939

    申请日:2011-11-01

    IPC分类号: G01J5/02

    摘要: An infrared sensor module includes a first infrared sensor that includes a first light emitting unit configured to emit infrared light to an object and a first light receiving unit configured to detect an amount of infrared light reflected from the object, a second infrared sensor that includes a second light emitting unit configured to emit infrared light to the object and a second light receiving unit configured to detect an amount of the infrared light reflected from the object, and a controller to measure reflectivity of the object using a peak output voltage of the first light receiving unit, and to measure a distance to the object using not only the measured object reflectivity but also an output voltage of the second light receiving unit. As a result, the distance from the infrared sensor to the object can be correctly measured irrespective of the reflectivity of the object.

    摘要翻译: 红外线传感器模块包括:第一红外线传感器,其包括被配置为向物体发射红外光的第一发光单元和被配置为检测从物体反射的红外光量的第一光接收单元;第二红外线传感器, 第二发光单元,被配置为向所述物体发射红外光;第二光接收单元,被配置为检测从所述物体反射的红外光的量;以及控制器,使用所述第一光的峰值输出电压来测量所述物体的反射率 并且使用不仅测量的物体反射率而且还测量第二光接收单元的输出电压来测量到物体的距离。 结果,无论物体的反射率如何,都可以正确地测量从红外线传感器到物体的距离。