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    • 9. 发明授权
    • Signal generating circuit and signal generating method
    • 信号发生电路和信号发生方法
    • US08427243B2
    • 2013-04-23
    • US13029130
    • 2011-02-17
    • Hsin-Hung ChenHsiang-Hui Chang
    • Hsin-Hung ChenHsiang-Hui Chang
    • H03B19/00
    • H03C3/0925H03C3/0941H03C3/0958
    • A signal generating circuit includes: an operating circuit arranged to generate a first control signal according to a reference clock signal and a feedback oscillating signal; a controllable oscillator arranged to generate an output oscillating signal according to the first control signal and a second control signal; a feedback circuit arranged to generate the feedback oscillating signal according to the output oscillating signal and a third control signal; a control circuit arranged to generate the second control signal and the third control signal according to an input signal; and a calibrating circuit arranged to calibrate the control circuit to adjust the second control signal by detecting a phase difference between the reference clock signal and the feedback oscillating signal.
    • 信号发生电路包括:操作电路,被配置为根据参考时钟信号和反馈振荡信号产生第一控制信号; 可控振荡器,被配置为根据第一控制信号和第二控制信号产生输出振荡信号; 反馈电路,被配置为根据输出振荡信号和第三控制信号产生反馈振荡信号; 控制电路,被配置为根据输入信号产生第二控制信号和第三控制信号; 以及校准电路,其布置成通过检测参考时钟信号和反馈振荡信号之间的相位差校准控制电路来调整第二控制信号。