Oscillators – Automatic frequency stabilization using a phase or frequency... – With reference oscillator or source
Patent
1998-05-15
2000-09-19
Kinkead, Arnold
Oscillators
Automatic frequency stabilization using a phase or frequency...
With reference oscillator or source
331 11, 331 1A, 327156, 327158, 327159, H03L 700
Patent
active
061218456
ABSTRACT:
A Phase-Locked Loop (PLL) system (30) and a method for modifying the output transition time of the PLL system (30). The PLL system has an input stage (36) connected to a PLL (37). The input stage (36) includes a phase detector stage (47), a phase difference threshold stage (48), and a phase difference modification stage (49). The input stage (36) receives a reference input signal and a feedback input signal and determines the phase difference between these two input signals. If the phase difference is greater than a predetermined value, then the input stage (36) decreases the phase difference between the reference input signal and the feedback input signal. If the phase difference is less than the predetermined value, then the phase difference between the reference input signal and the feedback input signal is not modified.
REFERENCES:
patent: 5180992 (1993-01-01), Akiyama et al.
patent: 5339278 (1994-08-01), Irwin et al.
patent: 5541929 (1996-07-01), Jokura
patent: 5592113 (1997-01-01), Quiet et al.
Kinkead Arnold
Martinez Anthony M.
Motorola Inc.
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