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    • 85. 发明授权
    • Integrated circuit devices having duty cycle correction circuits that receive control signals over first and second separate paths and methods of operating the same
    • 具有占空比校正电路的集成电路装置,其通过第一和第二分离路径接收控制信号及其操作方法
    • US07015739B2
    • 2006-03-21
    • US10793001
    • 2004-03-04
    • Woo-Jin LeeKyu-Hyoun Kim
    • Woo-Jin LeeKyu-Hyoun Kim
    • H03K3/017
    • H03K5/1565
    • Digital duty cycle correction circuits are provided including a duty cycle detector circuit configured to generate first and second control values associated with a first internal clock signal and a second internal clock signal, respectively. A comparator circuit is also provided and is configured to compare the first control value to the second control value and provide a comparison result. A counter circuit is configured to perform an addition and/or a subtraction operation responsive to the comparison result to provide a digital code. A digital to analog converter is configured to generate third and fourth control values responsive to the digital code. Finally, a duty cycle corrector circuit is configured to receive first and second external clock signals and the first through fourth control values and generate the first and second internal clock signals having a corrected duty cycle. The first and second control values are received over a first path and the third and fourth control values are received over a second path, different from the first path. Related methods of operating duty cycle correction circuits are also provided.
    • 提供了数字占空比校正电路,其包括占空比检测器电路,其被配置为分别产生与第一内部时钟信号和第二内部时钟信号相关联的第一和第二控制值。 还提供比较器电路,并且被配置为将第一控制值与第二控制值进行比较并提供比较结果。 计数器电路被配置为响应于比较结果执行加法和/或减法操作以提供数字代码。 数模转换器被配置为响应于数字代码产生第三和第四控制值。 最后,占空比校正器电路被配置为接收第一和第二外部时钟信号以及第一至第四控制值,并产生具有校正占空比的第一和第二内部时钟信号。 通过第一路径接收第一和第二控制值,并且通过不同于第一路径的第二路径接收第三和第四控制值。 还提供了操作占空比校正电路的相关方法。
    • 87. 发明授权
    • Missile restraining apparatus
    • 导弹限制装置
    • US5714708A
    • 1998-02-03
    • US720024
    • 1996-09-27
    • Woo-Jeon ShimIl-Soo KimKil-Ho HongWoo-Jin Lee
    • Woo-Jeon ShimIl-Soo KimKil-Ho HongWoo-Jin Lee
    • F41F3/052F41F3/00
    • F41F3/052
    • An improved missile restraining apparatus capable of effectively protecting a missile from an external impact and quickly releasing a missile restraining state when launching missile, which includes a pair of protrusions having a circular cross-section and formed in the rear portion of a missile, and a pair of brackets fixed to the inner surface of a launch tube and formed so that a pair of restraining grooves corresponding to said protrusions are formed in a predetermined direction, wherein one end of said restraining groove has a circular cross-section, and the other end thereof is shaped to have an elongating axis longer than the diameter of the protrusion in the radial direction and to have the same shorter axis as the restraining groove in the vertical direction.
    • 一种改进的导弹限制装置,能够有效地保护导弹免受外部冲击,并且在发射导弹时迅速释放导弹限制状态,导弹包括一对具有圆形横截面并形成在导弹后部的突起,以及 一对支架固定在发射管的内表面上并且形成为使得一对对应于所述突起的约束槽沿预定方向形成,其中所述限制槽的一端具有圆形横截面,另一端 成形为具有比突起在径向方向上的直径长的延伸轴线,并且在垂直方向上具有与限制槽相同的短轴。