Patent ID: 7295941
Filing Date: 2007-11-13
Classification: G01D

Abstract:
1. A method for correcting a characteristic curve, the method comprising: determining whether a characteristic curve having phase angle values corresponding to displacement between a magnetic sensor element and a magnetic ruler of a magnetoresistive (MR) sensor within a range of displacement has a jump discontinuity by comparing a first phase angle value at a first end of the range to a second phase angle value at a second end of the range and by comparing phase angle values between the range ends; wherein the characteristic curve is determined to have a jump discontinuity if the second phase angle value is lower than the first phase angle value and if the phase angle values between the range ends are generally rising; wherein the characteristic curve is determined to have a jump discontinuity if the second phase angle value is higher than the first phase angle value and if the phase angle values between the range ends are generally falling; upon determining that the characteristic curve has a jump discontinuity;