Sensor device with synchronization of a sensor signal with a request signal
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United States of America Patent
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May 30, 2023
Grant Date -
Feb 25, 2021
app pub date -
Aug 19, 2020
filing date -
Aug 20, 2019
priority date (Note) -
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Abstract
A sensor device has a clock generator, a counter, an exciter device, a sensor element and an evaluation device, and outputs a sensor signal in response to a request signal having alternating leading and trailing edges. The counter reading is incremented differently, depending on whether the request signal has a leading/trailing edge between two successive leading or trailing edges of the clock signal. If the request signal has such a leading/trailing edge the counter corrects the counter reading. The value of the excitation signal outputted by the exciter device depends on the counter reading or a value derived therefrom. The sensor element outputs based on the excitation signal a raw signal, which is supplied to the evaluation device. The evaluation device determines based on this information whether to acquire the raw signal and how to take the raw signal into account when establishing the sensor signal.
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