System and method for a digital calibration filter device
AssigneeInfineon Technologies AG
InventorsDietmar Straeussnigg, Alessandro Caspani, Andreas Wiesbauer
Life of this patent
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Abstract
In accordance with an embodiment, a system includes a digital calibration filter device configured to receive a digital input signal based on a sensor output signal from a sensor, receive a sensor-specific control signal, and perform digital filter processing of the digital input signal to produce a calibrated output signal, wherein the digital filter processing is based on the sensor-specific control signal; and a control device configured to select the sensor-specific control signal from a plurality of sensor-specific control signals based on an ascertained influencing parameter, and provide the sensor-specific control signal to the digital calibration filter device.
Claims24
A system comprising:
- a digital calibration filter device configured to
- receive a digital input signal based on a sensor output signal from a sensor,
- receive a sensor-specific control signal, and
- perform digital filter processing of the digital input signal to produce a calibrated output signal, wherein the digital filter processing is based on the sensor-specific control signal;
- and
- a control device configured to select the sensor-specific control signal from a plurality of sensor-specific control signals based on an ascertained influencing parameter, and provide the sensor-specific control signal to the digital calibration filter device.
A mobile device comprising:
- a sensor;
- a digital calibration filter device coupled to the sensor, the digital calibration filter device configured to
- receive a digital input signal based on a sensor output signal from the sensor,
- receive a sensor-specific control signal, and
- perform digital filter processing of the digital input signal to produce a calibrated output signal, wherein the digital filter processing is based on the sensor-specific control signal;
- a control device configured to select the sensor-specific control signal from a plurality of sensor-specific control signals based on an ascertained influencing parameter, and provide the sensor-specific control signal to the digital calibration filter device;
- and
- an influencing variable sensor device coupled to the control device, the influencing variable sensor device configured to provide the ascertained influencing parameter of the sensor to the control device.
A method for calibrating a sensor output signal from a sensor, the method comprising:
- ascertaining an influencing parameter of the sensor;
- selecting a control signal from a plurality of control signals based on the ascertained influencing parameter, wherein a prescribed frequency response of the control signal is dependent on the ascertained influencing parameter of the sensor;
- adjusting a transfer function of a digital filter based on the selected control signal;
- and
- digital filtering an output signal of the sensor according to the adjusted transfer function to provide a calibrated output signal using the digital filter, wherein the digital filter utilizes at least two filter coefficients.
Dependencies are inferred from the claim text.