Successive period-to-voltage converting apparatus

Details Successive period-to-voltage converting apparatus Successive period-to-voltage converting apparatus

1988-02-01

1988-09-06

Roskoski, Bernard

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

368120, G04F 800

Patent

active

047697989

ABSTRACT:
An apparatus which successively converts the period defined by successive two pulses of a series of input pulses into a voltage, and in which fractional times between input pulses and clock pulses are converted, by two fractional time-to-voltage converters alternately with each other, into voltage signals and the voltage signals thus alternately yielded by the two converters are alternately applied, by a change-over switch, to a subtractor, wherein a later one of the two successive voltage signals is always subtracted from the earlier one of them, creating a difference signal therebetween. At the same time, the number of clock pulses present between the two input pulses corresponding to the two voltage signals is counted and the count value is converted to analog form, which is added to the difference signal, obtaining the voltage corresponding to the period between the two input pulses.

REFERENCES:
patent: 3365799 (1968-01-01), Fisher
patent: 3370231 (1968-02-01), Zurk
patent: 4504155 (1985-03-01), Ruggieri

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