AUTOMATIC GYRO SENSOR OFFSET CORRECTION CIRCUIT SUITABLE FOR MINIMIZING OFFSET CAUSED BY DRIVING SIGNAL COMPONENTS, A GYRO SENSOR SYSTEM, AND AN AUTOMATIC GYRO SENSOR OFFSET CORRECTION METHOD

摘要

PURPOSE: An automatic gyro sensor offset correction circuit, a gyro sensor system, and an automatic gyro sensor offset correction method are provided to remove or minimize driving signal components included in the output of a sensor by regulating the size of driving signals.;CONSTITUTION: An automatic gyro sensor offset correction circuit comprises a signal gain modulation unit(100) and an amplitude detection unit(200). The signal gain modulation unit is amplified by receiving output signals of each sensor electrode, while removing at least some of offset caused by driving signal components included in each output signal according to the modulation of variable resistance. The amplitude detection unit detects the output signals of the signal gain modulation unit and modulates the variable resistance so that the output signals of the signal gain modulation unit are maintained within a predetermined range.;COPYRIGHT KIPO 2013;[Reference numerals] (100) Signal gain modulation unit; (200) Amplitude detection unit; (AA) Sensor signal; (BB) Amplified output