Rate/ratio determining apparatus

Details Rate/ratio determining apparatus Rate/ratio determining apparatus

1994-03-28

1995-01-03

Chan, Eddie P.

Boots, shoes, and leggings

395650, 364DIG2, 3649218, 3649425, 3649427, 3649493, 3649495, 364951, 364484, 364556, G06F 946

Patent

active

053793900

ABSTRACT:
A frequency determination system and method for frequency determination. A programmable controller responds to receipt of a sequence of pulses. A number of interrupts of different priority level perform rate or frequency calculation in an efficient manner. Pulses are counted upon receipt but the actual rate calculation is performed by a low priority software routine. By performing only essential counting functions when pulses occur, the programmable controller can perform other tasks in addition to the rate calculations. In the disclosed design, the controller can monitor serial communications in addition to performing the rate calculation task.

REFERENCES:
patent: 4523277 (1985-06-01), Schnathorst
patent: 4611294 (1986-09-01), Stanfill
patent: 4636944 (1987-01-01), Hodge
patent: 4734882 (1988-03-01), Romagosa
patent: 4792890 (1988-12-01), Blair et al.
patent: 4800508 (1989-01-01), Frederich
Technical Manual for "MAX" Rate and Draw Indicator Published by Dynapar Corp.

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