Boots – shoes – and leggings
Patent
1979-10-26
1982-03-09
Gruber, Felix D.
Boots, shoes, and leggings
34082571, 364484, 364728, G06F 1520, G06F 15336, H04B 1500
Patent
active
043193340
ABSTRACT:
A device for sensing the frequency of an alternating electrical input signal. An autocorrelator at an input to the device generates a signal having a periodic component of frequency equal to four times the frequency of any periodic component in the input signal. The amplitude of non-periodic components is substantially reduced. The autocorrelator is followed by a series of sixteen frequency dividers whose outputs are applied to respective comparators. Within each comparator the signal from a divider is compared with one of sixteen window signals, each representing a predetermined range of periods. Any output from the comparator is converted to a binary decimal form and is applied to a qualifier circuit. The qualifier circuit only gives an output if at least eleven of the last eighteen signals applied thereto have represented a signal whose period lies within the same one of the predetermined ranges of periods.
REFERENCES:
patent: 3855575 (1974-12-01), Leuschner et al.
patent: 3882303 (1975-05-01), Linder
patent: 4021653 (1977-05-01), Sharp et al.
patent: 4024414 (1977-05-01), Gurry
patent: 4064488 (1977-12-01), Chapman
patent: 4071903 (1978-01-01), Head et al.
patent: 4177453 (1979-12-01), Collins
patent: 4211897 (1980-07-01), Ichikawa et al.
LandOfFree
Frequency sensing device for reducing non-periodic components does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency sensing device for reducing non-periodic components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency sensing device for reducing non-periodic components will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1844368