×

Apparatus and method for enhancing accuracy of sensor signal

  • US 20040210411A1
  • Filed: 04/19/2004
  • Published: 10/21/2004
  • Est. Priority Date: 04/17/2003
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus for enhancing the accuracy of a sensor signal output from a sensor by estimating and compensating for bias, the apparatus comprising:

  • a low-pass filter (LPF) operable to filter the sensor signal and output a low-frequency sensor signal;

    an operation determination unit operable to determine whether the sensor is not in operation;

    a bias estimating unit operable to estimate bias included in the low frequency sensor signal output from the LPF according to the output of the determination unit; and

    a subtractor operable to subtract the estimated bias from the low frequency sensor signal according to the output of the operation determination unit.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×