Oscillator phase matching

Details Oscillator phase matching Oscillator phase matching

2007-10-19

2009-11-17

Chang, Joseph (Department: 2817)

Oscillators

Plural oscillators

Selectively connected to common output or oscillator...

C331S002000, C331S018000

Reexamination Certificate

active

07619484

ABSTRACT:
A system comprises a primary oscillator that provides a first signal having a first phase and a backup oscillator that provides a second signal having a second phase. The system also comprises trim logic coupled to the backup oscillator logic. Prior to failure of the primary oscillator, the trim logic adjusts the second phase to match the first phase. Upon failure of the primary oscillator, the second signal is used in lieu of the first signal.

REFERENCES:
patent: 5235292 (1993-08-01), Endo et al.
patent: 6122756 (2000-09-01), Baxter et al.
patent: 2007/0075756 (2007-04-01), Metz

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