Apparatus of and method for counting a number of revolutions of

Details Apparatus of and method for counting a number of revolutions of Apparatus of and method for counting a number of revolutions of

1992-11-16

1994-06-21

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Position determining

377 20, 377 45, 307515, 32420725, G06M 127, G01R 2920

Patent

active

053234367

ABSTRACT:
A revolution counting circuit for performing such an operation includes a pulse multiplying unit for multiplying signal pulses generated by an encoder and a pulse dividing unit for dividing the multiplied signal pulses by a divided value set up by a microprocessor. Further, a revolution counting circuit may include a pulse selection unit for selecting one of the signal pulses generated by the pulse multiplying unit and the pulse dividing unit. Also included are a waveform shaping unit for generating a pair of divided signal pulses having the same phase difference as the signal pulses generated by the encoder and a control signal generator for sending control signals to the waveform shaping unit.

REFERENCES:
patent: 4216530 (1980-08-01), Yamaki et al.
patent: 4406002 (1983-09-01), Wine
patent: 4575865 (1986-03-01), Dackow
patent: 4881248 (1989-11-01), Korechika
patent: 5004981 (1991-04-01), Hashimoto et al.
patent: 5079549 (1992-11-01), Liessner

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