Electronic compass and method of calibration
First Claim
1. A method of controlling an electronic compass comprising:
- calibrating an electronic compass based upon at least one of a first magnetic field data set or a second, partially overlapping magnetic field data set.
3 Assignments
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Accused Products
Abstract
An electronic compass assembly includes a first collection portion and a second collection portion that each collect magnetic field data. The magnetic field data collected by the second collection portion partially overlaps the magnetic field data collected by the first collection portion. A processor module determines a calibration output based upon the magnetic field data from the first collection portion if a first predetermined condition exists and determines the calibration output based upon magnetic field data from the second collection portion if a second predetermined condition exists. An example method for controlling the electronic compass includes calibrating the electronic compass based upon one of a first magnetic field data set or a second, partially overlapping magnetic field data set. In another example, the processor module counts the number of magnetic field data points collected by one of the first magnetic field data set, the second magnetic field data set, or both, and determines a calibration output if the number exceeds a threshold. The processor module then uses acceptance criteria to determine whether to accept or reject the calibration output.
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Citations
20 Claims
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1. A method of controlling an electronic compass comprising:
calibrating an electronic compass based upon at least one of a first magnetic field data set or a second, partially overlapping magnetic field data set. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of calibrating an electronic compass comprising:
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collecting magnetic field data from a first magnetic field data set; and
collecting partially overlapping magnetic field data from a second magnetic field data set. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A compass assembly comprising:
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a first collection portion and a second collection portion that each collect magnetic field data, and the magnetic field data collected by the second collection portion partially overlaps the magnetic field data collected by the first collection portion; and
a processor module that determines a calibration output based upon the magnetic field data from the first collection portion if a first predetermined condition exists and determines the calibration output based upon magnetic field data from the second collection portion if a second predetermined condition exists. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification