Phase-locked loop apparatus and method thereof

Details Phase-locked loop apparatus and method thereof Phase-locked loop apparatus and method thereof

2007-08-14

2007-08-14

Chang, Joseph (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural a.f.s. for a single oscillator

C331S017000

Reexamination Certificate

active

11163508

ABSTRACT:
A PLL device includes a first hybrid PLL and a second digital phase/frequency detection module. The second digital phase/frequency detection module and the first hybrid PLL's oscillator, switching unit, and analog control signal generating module are capable of forming a second hybrid PLL. The switching unit selectively activates either the first hybrid PLL or the second hybrid PLL according to a selection signal to generate an analog control signal with the analog control signal generating module for controlling the oscillator, in order to control the frequency of a clock signal generated by the oscillator.

REFERENCES:
patent: 2004/0095863 (2004-05-01), Verboom et al.

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