Anomaly detection in mutual capacitance touch sensing

Dynamic port reconfiguration in mutual capacitance touch sensors addresses the limitations of conventional methods by accurately detecting anomalies through comparative capacitance changes, enhancing reliability and reducing hardware needs.

JP7870180B2Active Publication Date: 2026-06-04RENESAS ELECTRONICS CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
RENESAS ELECTRONICS CORP
Filing Date
2022-03-23
Publication Date
2026-06-04

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Abstract

To provide systems and methods for determining a likelihood of an occurrence of anomalies in a sensor.SOLUTION: A processor receives a first measurement of a first capacitance change between a first port and a second port of a device connected to the sensor. The first measurement is obtained in response to the first port being configured to perform a first function, and in response to the second port being configured to perform a second function. The processor receives a second measurement of a second capacitance change between the first and second ports. The second measurement can be obtained in response to the first port being configured to perform the second function, and in response to the second port being configured to perform the first function. The processor determines a likelihood of occurrence of anomalies based on the first and second measurements.SELECTED DRAWING: Figure 1
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