Direction finding system
US4379366A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1981 |
| Grant date | Apr 12, 1983 |
| Priority date | — |
| Expiry date | Apr 24, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C17/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A direction finding system of the type finding a present direction on 4N direction divisions defined by 2N boundary levels for automotive vehicles, said system comprising a magnetic sensor circuit for generating a pair of electric signals indicating two perpendicular components of the earth's magnetic field, a logic circuit for signal-converting the electric signals, discriminating and latching to generate direction indicating 2N binary signals with reference to predetermined 2N boundary indicating levels, a sorting circuit for sorting the binary signals to generate one of 4N direction signals and a display device for displaying a corresponding direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.