Method of measurement and compensation of an inaccurate clock si

Details Method of measurement and compensation of an inaccurate clock si Method of measurement and compensation of an inaccurate clock si

1997-06-30

1999-06-22

Butler, Dennis M.

395558, G06F 104

Patent

active

059151080

ABSTRACT:
A method for determining the actual frequency of an inaccurate clock signal then using the actual frequency to generate a compensation factor to correct calculations using the clock signal. The method includes counting the number of clock pulses in the clock signal over a predetermined and programmable period of time, and based on the clock pulse count, determining the actual frequency of the clock signal. Once the actual frequency of the clock signal is determined, this value is used to generate the compensation factor based on the expected or rated frequency of the clock signal to compensate for the calculations using the clock signal. The method has a particular application for use in a powertrain control module incorporating a low frequency resonator and a high frequency system clock, where the resonator generates an inaccurate clock signal which is highly stable for short periods of time and the system clock is relatively stable over long term but suffers from short term jitter.

REFERENCES:
patent: 4616173 (1986-10-01), Cook et al.
patent: 4945303 (1990-07-01), Hwang et al.
patent: 5745534 (1998-04-01), DeBiasi et al.

Affiliated with

Also associated with

Rating

Method of measurement and compensation of an inaccurate clock si does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of measurement and compensation of an inaccurate clock si, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of measurement and compensation of an inaccurate clock si will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1714309