Patent ID: 11867503
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 4:
5. An anomaly detection system comprising:
a strain sensor;
a memory; and
a comparator,
wherein the memory is configured to retain an analog potential,
wherein the comparator is configured to compare a first potential output by the strain sensor and a second potential retained by the memory,
wherein the anomaly detection system is configured to:
retain the first potential as an initialization operation in a first case where one of the first potential and the second potential is higher than the other of the first potential and the second potential; and
output an anomaly detection signal in a second case where the one of the first potential and the second potential is lower than the other of the first potential and the second potential by a predetermined value or more.