Boots – shoes – and leggings
Patent
1979-06-07
1981-08-18
Gruber, Felix D.
Boots, shoes, and leggings
364510, 364569, G06F 15336, G06F 1520
Patent
active
042850460
ABSTRACT:
Two binary signals are compared by providing time signals to indicate the respective times at which the signals change their state, usually in the form of digital data strings corresponding to the times at which the signals change their state, and the two time signals are cross correlated. For example, if the two binary signals are in the same state between two consecutive times of the two data strings, a running total of time increments is increased by the numerical difference between the two times; if the two binary signals are in opposite states, the running total is decremented by the numerical difference. In a particular example the two binary signals are derived from two sensors spaced in the direction of flow of a flowing fluid; one binary signal is time shifted by adding or subtracting a series of numbers of increments; each time shifted signal and the other signal are cross correlated; and the transit time of the flow between the sensors is given by the time shift corresponding to the highest running total.
REFERENCES:
patent: 3249911 (1966-05-01), Gustafsson
patent: 3331955 (1967-07-01), Norsworthy
patent: 3777133 (1973-12-01), Beck et al.
patent: 3818231 (1974-06-01), Gopal et al.
patent: 4019038 (1977-04-01), Critten et al.
patent: 4121297 (1978-10-01), Smith
Gruber Felix D.
National Research Development Corporation
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