公开(公告)号：US20070247199A1

公开(公告)日：2007-10-25

申请号：US11406668

申请日：2006-04-19

申请人： Shang-ping Chen

发明人： Shang-ping Chen

IPC分类号： H03D3/24 ,  H03L7/06

CPC分类号： H03L7/0891 ,  H03L7/14

摘要： An enhanced phase-locked loop (PLL) apparatus having an aligning unit and method are described. The PLL comprises an aligning unit, a phase difference detecting unit, a charge pump, a loop filter, and a voltage-controlled oscillator. The aligning unit receives a hold signal and a reference signal for shifting an edge of the hold signal to generate the gating signal. The phase difference detecting unit detects a phase difference between the reference signal and a feedback signal and outputting an UP signal and a DOWN signal for representing the phase difference. The edge of the hold signal is aligned to an edge of the reference signal. The charge pump generates a current signal based on the UP and DOWN signals. The loop filter is used to generate a control voltage based on the current signal. The voltage-controlled oscillator receives the control voltage and generates an output signal serving as the feedback signal. The feedback signal is supplied to the optical storage system for generating subsequent data recording signals.

摘要翻译： 描述了具有对准单元和方法的增强型锁相环（PLL）装置。 PLL包括对准单元，相位差检测单元，电荷泵，环路滤波器和压控振荡器。 对准单元接收保持信号和用于移动保持信号的边沿以产生选通信号的参考信号。 相位差检测单元检测参考信号和反馈信号之间的相位差，并输出用于表示相位差的UP信号和DOWN信号。 保持信号的边沿与参考信号的边沿对齐。 电荷泵基于UP和DOWN信号产生电流信号。 环路滤波器用于基于电流信号产生控制电压。 压控振荡器接收控制电压并产生用作反馈信号的输出信号。 反馈信号被提供给光学存储系统以产生后续的数据记录信号。