Real-life timer interval adjustment
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United States of America Patent
Stats
-
May 2, 1995
Issued Date -
N/A
app pub date -
Oct 13, 1993
filing date -
Dec 16, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system and method for controlling time-critical functions by dynamically adjusting the interrupt frequency of a microprocessor. Interrupts are generated at a predetermined frequency. Time-critical functions are then performed in response to the interrupts. The interval is adjusted based on timing data from a substantially accurate source. Where the interval is measured in terms of clock pulses, a non-integer number of pulses per interval is attained by varying the number of pulses per interval so that the average over a number of intervals is equal to the non-integer number of pulses per interval. The interval is further adjusted using a selected damping coefficient to eliminate an underdamped condition.
First Claim
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