Oscillation adjusting circuit and method

Details Oscillation adjusting circuit and method Oscillation adjusting circuit and method

2008-07-18

2011-10-18

Johnson, Ryan (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

C331S025000, C331S00100A, C375S376000, C327S159000, C713S500000, C713S501000

Reexamination Certificate

active

08040193

ABSTRACT:
An oscillation tuning circuit is provided and includes a first circuit. The first circuit receives an input data stream with a known time interval, producing a first output signal having a first period, determines a first error signal representing a difference between the known time interval and a measured duration of the known time interval, determines a reference error signal according to a predetermined multiple of the first period, and adjusts the first period according to the first error signal and the reference error signal, wherein the known time interval is associated with a period between a first occurrence of and a second occurrence of a predetermined bit pattern in the input data stream.

REFERENCES:
patent: 6670852 (2003-12-01), Hauck
patent: 7093151 (2006-08-01), Williams
patent: 2006/0023824 (2006-02-01), Greco et al.
patent: 2007/0216487 (2007-09-01), Yang et al.

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