Phase difference measuring apparatus

Details Phase difference measuring apparatus Phase difference measuring apparatus

1983-10-04

1986-07-15

Chin, Gary

Boots, shoes, and leggings

324 83D, 328133, G01R 2500

Patent

active

046009949

ABSTRACT:
First and second input signals are waveform-shaped into rectangular wave signals and, in a period measuring mode, one of the rectangular wave signal is input into a time interval measuring circuit and clock pulses are counted during the period of the rectangular wave signal. In a time interval measuring mode, the clock pulses are counted by the time interval measuring circuit over the time interval between one edge of the one rectangular wave signal and the corresponding edge of the other rectangular wave signal, and the phase difference between the first and second input terminals is calculated from the count values.

REFERENCES:
patent: 3663956 (1972-05-01), Purdy et al.
patent: 3760270 (1973-09-01), Irvin
patent: 3764903 (1973-10-01), Griswold
patent: 3953794 (1976-04-01), Moore
patent: 4400664 (1983-08-01), Moore
patent: 4488108 (1984-12-01), Treise et al.

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