Method and apparatus for the determination of start time differe

Details Method and apparatus for the determination of start time differe Method and apparatus for the determination of start time differe

1976-03-08

1977-12-27

Wise, Edward J.

Boots, shoes, and leggings

324 83D, G01R 2500

Patent

active

040656659

ABSTRACT:
Apparatus and method determines the time shift and total phase difference between two alternating current signals. A value .psi. (f) corresponding to the phase relationship between the two signals is determined for each frequency f contained in the two signals. A slope A and an ordinate section B of the best fitting straight line g(f)=Af + B through the totality of the values .psi. (f) so obtained is determined. The phase shift .psi..sub.o =B modulo (2.pi.) is determined from the ordinate section B and the time shift .tau. = A/2.pi. from the slope A.

REFERENCES:
patent: 3764903 (1973-10-01), Griswold
patent: 3968493 (1976-07-01), Last et al.

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