Vehicle compass with electronic sensor
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United States of America Patent
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-
Oct 26, 1993
Grant Date -
N/A
app pub date -
Dec 20, 1991
filing date -
Dec 20, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic compass is described for use in vehicles. The compass employs a magnetoresistive sensor for sensing the earth magnetic field and the sensor is operated in alternate set/reset bias modes. The compass is provided with deviation compensation by a closed loop system including measurement of the sensor output signals and an offset current strap for nullifying the vehicle deviation field.
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