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    • 4. 发明申请
    • Fast Lock-In All-Digital Phase-Locked Loop with Extended Tracking Range
    • 具有扩展跟踪范围的快速锁定全数字锁相环
    • US20110089982A1
    • 2011-04-21
    • US12580556
    • 2009-10-16
    • Hong-Yean HsiehChao-Cheng Lee
    • Hong-Yean HsiehChao-Cheng Lee
    • H03L7/06
    • H03L7/113H03L7/091H03L7/099H03L2207/50
    • An apparatus and a method for achieving lock-in of a phase-locked loop (PLL) are disclosed. The PLL receives a reference clock and generates an output clock according to the reference clock. The method comprises: adjusting an oscillation frequency of a controlled oscillator of the PLL close to a desired frequency by counting the number of rising edges of a first clock in a number of a second clock cycles; aligning a rising edge of a third clock and a rising edge of a fourth clock by temporarily changing the oscillation frequency of the digitally controlled oscillator; and locking the phases of the third and fourth clocks by a phase detector of the PLL, wherein the first and the third clocks correspond to the output clock and the second and fourth clocks correspond to the reference clock.
    • 公开了一种用于实现锁相环(PLL)锁定的装置和方法。 PLL接收参考时钟,并根据参考时钟产生输出时钟。 该方法包括:通过以第二时钟周期的数量计数第一时钟的上升沿的数量来调节PLL的受控振荡器的振荡频率接近期望的频率; 通过临时改变数字控制振荡器的振荡频率,对准第三时钟的上升沿和第四时钟的上升沿; 以及通过PLL的相位检测器锁定第三和第四时钟的相位,其中第一和第三时钟对应于输出时钟,第二和第四时钟对应于参考时钟。
    • 5. 发明授权
    • Multi-phase layout structure and method
    • 多相布局结构与方法
    • US07911287B2
    • 2011-03-22
    • US12132829
    • 2008-06-04
    • Chao-Cheng Lee
    • Chao-Cheng Lee
    • H01P3/02
    • G06F17/5077
    • The present invention provides a multi-phase layout structure and method. The layout structure comprises: a first layout layer; a second layout layer substantially parallel to the first layout layer; a plurality of traces, each transmitting a signal, and the plurality of signals having a phase difference between each other; wherein a horizontal coupling capacitance is provided between two neighboring traces configured on the same layer of the first layout layer and the second layout layer, a vertical coupling capacitance is provided between two neighboring traces configured on different layers of the first layout layer and the second layout layer, and the plurality of traces have substantially the same total coupling capacitance wherein the total coupling capacitance is defined by the horizontal coupling capacitance and the vertical coupling capacitance.
    • 本发明提供一种多相布局结构和方法。 布局结构包括:第一布局层; 基本上平行于所述第一布局层的第二布局层; 多个迹线,各自发送信号,并且所述多个信号具有彼此之间的相位差; 其中在配置在所述第一布局层和所述第二布局层的相同层上的两个相邻迹线之间提供水平耦合电容,在配置在所述第一布局层和所述第二布局层的不同层上的两个相邻迹线之间提供垂直耦合电容 层,并且多个迹线具有基本上相同的总耦合电容,其中总耦合电容由水平耦合电容和垂直耦合电容限定。
    • 9. 发明申请
    • SOFT-START DEVICE
    • 软起动装置
    • US20090206920A1
    • 2009-08-20
    • US12388201
    • 2009-02-18
    • Chao-Cheng LeeWei-Chou Wang
    • Chao-Cheng LeeWei-Chou Wang
    • G05F1/10
    • H02M1/36
    • A soft-start device including a current source, a first transistor, and a second transistor is described. The first transistor is coupled to the current source, and an amount of current conducted by the first transistor is determined according to a voltage. The second transistor is also coupled to the current source, and an amount of current conducted by the second transistor is determined according to a fixed bias. An initial voltage value of the voltage is smaller than a voltage value of the fixed bias. However, after a soft start, the voltage value of the first voltage is increased gradually to be larger than the voltage value of the fixed bias, such that the soft start may be implemented smoothly.
    • 描述了包括电流源,第一晶体管和第二晶体管的软启动器件。 第一晶体管耦合到电流源,并且根据电压确定由第一晶体管传导的电流量。 第二晶体管还耦合到电流源,并且由第二晶体管传导的电流量根据固定偏压来确定。 电压的初始电压值小于固定偏压的电压值。 然而,在软启动之后,第一电压的电压值逐渐增加,以使其大于固定偏压的电压值,从而软启动可以平滑地实现。