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    • 4. 发明授权
    • Timing lock detection apparatus and method for digital broadcasting receiver
    • 数字广播接收机定时锁定检测装置及方法
    • US07933322B2
    • 2011-04-26
    • US11635721
    • 2006-12-07
    • Eun-Seok JinO-Hyung KwonSoo-In Lee
    • Eun-Seok JinO-Hyung KwonSoo-In Lee
    • H04B3/46
    • H04B3/462H04H40/18H04L7/0004H04L7/033
    • A timing lock detection apparatus and method for digital broadcasting receiver are provided. The apparatus includes: a discrete value generator for cyclically selecting a discrete signal value from a continuous timing error signal; a differential calculator for obtaining a difference between the currently selected timing error signal value and a previously selected timing error signal that is a timing jitter signal; a sign variation detector for detecting variation in a sign of the timing jitter signal; a lock control signal generator for discriminating a period based on the detected sign changing time, and controlling a lock step of the loop filter according to a convergence mode of the timing jitter signal at each period; and a lock detection signal generator for generating a lock signal or an unlock signal according to whether the timing jitter signal reaches a steady state and using the current lock step signal.
    • 提供了一种用于数字广播接收机的定时锁定检测装置和方法。 该装置包括:离散值发生器,用于从连续定时误差信号周期性地选择离散信号值; 用于获得当前选择的定时误差信号值与作为定时抖动信号的先前选择的定时误差信号之间的差的差分计算器; 用于检测所述定时抖动信号的符号的变化的符号变化检测器; 锁定控制信号发生器,用于基于检测到的符号变化时间来识别周期,并且根据每个周期的定时抖动信号的收敛模式来控制环路滤波器的锁定步骤; 以及锁定检测信号发生器,用于根据定时抖动信号是否达到稳定状态并使用当前锁定步骤信号产生锁定信号或解锁信号。
    • 6. 发明申请
    • Timing lock detection apparatus and method for digital broadcasting receiver
    • 数字广播接收机定时锁定检测装置及方法
    • US20070133667A1
    • 2007-06-14
    • US11635721
    • 2006-12-07
    • Eun-Seok JinO-Hyung KwonSoo-In Lee
    • Eun-Seok JinO-Hyung KwonSoo-In Lee
    • H04B3/46G01R29/26
    • H04B3/462H04H40/18H04L7/0004H04L7/033
    • A timing lock detection apparatus and method for digital broadcasting receiver are provided. The apparatus includes: a discrete value generator for cyclically selecting a discrete signal value from a continuous timing error signal; a differential calculator for obtaining a difference between the currently selected timing error signal value and a previously selected timing error signal that is a timing jitter signal; a sign variation detector for detecting variation in a sign of the timing jitter signal; a lock control signal generator for discriminating a period based on the detected sign changing time, and controlling a lock step of the loop filter according to a convergence mode of the timing jitter signal at each period; and a lock detection signal generator for generating a lock signal or an unlock signal according to whether the timing jitter signal reaches a steady state and using the current lock step signal.
    • 提供了一种用于数字广播接收机的定时锁定检测装置和方法。 该装置包括:离散值发生器,用于从连续定时误差信号周期性地选择离散信号值; 用于获得当前选择的定时误差信号值与作为定时抖动信号的先前选择的定时误差信号之间的差的差分计算器; 用于检测定时抖动信号的符号变化的符号变化检测器; 锁定控制信号发生器,用于基于检测到的符号变化时间来识别周期,并且根据每个周期的定时抖动信号的收敛模式来控制环路滤波器的锁定步骤; 以及锁定检测信号发生器,用于根据定时抖动信号是否达到稳定状态并使用当前锁定步骤信号产生锁定信号或解锁信号。