Offset calculation device, offset correction device, and offset calculation method
AssigneeLapis Semiconductor Co., Ltd.
InventorTakayuki Saito
Life of this patent
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Abstract
An offset calculation device includes a determination unit configured to determine a rotation state of an object having an angular velocity sensed by a gyro sensor based on a moving average value of sensed angular velocity during a plurality of time periods differing from each other, the moving average value being calculated from chronological data of numerical values corresponding to the sensor data output from the gyro sensor. The offset calculation device further includes a calculation unit configured to calculate an offset value of the sensor data based on the sensor data corresponding to a time period in which the target object was deemed to be in a non-rotation state by the determination unit.
Claims12
An offset calculation device, comprising:
- a determination unit configured to determine a rotation state of an object having an angular velocity sensed by an angular velocity sensor based on a moving average value of sensed angular velocity values in a plurality of time periods including at least a first time period and a second time period differing in duration from the first time period, the moving average value being calculated from time-series data of numerical values corresponding to sensor data output from the angular velocity sensor;
- and
- a calculation unit configured to calculate an offset value of the sensor data based on the sensor data corresponding to a time period in which the object was deemed to be in a non-rotation state by the determination unit.
An offset calculation method, comprising:
- determining a rotation state of an object having an angular velocity sensed by an angular velocity sensor based on a moving average value of sensed angular velocity values during a plurality of time periods including at least a first time period and a second time period differing in duration from the first time period, the moving average value being calculated from chronological data of numerical values corresponding to the sensor data output from the angular velocity sensor;
- and
- calculating an offset value of the sensor data based on the sensor data corresponding to the time period in which the object was deemed to be in a non-rotation state.
Dependencies are inferred from the claim text.