Boots – shoes – and leggings
Patent
1991-12-27
1994-10-04
Black, Thomas G.
Boots, shoes, and leggings
364449, 33361, G01C 1738
Patent
active
053532414
ABSTRACT:
A shifting compensation circuit which employs a ranging circuit having a variable direct voltage source, to compensate for abnormally large vehicle magnetic fields. A ranging circuit is coupled between a microcomputer and a flux-gate. The microcomputer monitors the output of an integrator through a buffer amplifier to minimize variations in the integrator output caused by temperature variations, and directs the variable direct voltage source to add a direct voltage reference, in opposition to the vehicle's magnetic field signal and within the output voltage range of the integrator, to the output signal of the flux-gate, such that the combination of the two signals is within the output voltage range of the integrator for all vehicle headings.
REFERENCES:
patent: 3899834 (1975-08-01), Harrison, Jr.
patent: 3991361 (1976-11-01), Mattern et al.
patent: 4424631 (1984-01-01), Franks
patent: 4425717 (1984-01-01), Marcus
patent: 4505054 (1985-03-01), Clark et al.
patent: 4546551 (1985-10-01), Franks
patent: 4622646 (1986-11-01), Waller et al.
patent: 4622843 (1986-11-01), Hormel
patent: 4677381 (1987-06-01), Geerlings
patent: 4698912 (1987-10-01), Fowler et al.
patent: 4750349 (1988-06-01), Luitje
patent: 4807462 (1989-02-01), Al-Attar
Black Thomas G.
Zanelli Michael
LandOfFree
Shifting system and method for an electronic compass system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shifting system and method for an electronic compass system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shifting system and method for an electronic compass system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-586381