Patent ID: 9575024
Date: 2017-02-21
CPC Classifications: A61B,G01N,G06K

Claim:
1. A decoder unit for determining a material of a detected object based on a signal from a capacitive sensor, the decoder unit comprising: a distribution determination device that determines a detected distribution relation based on the signal; a comparison device that compares the detected distribution relation with a first predetermined distribution relation of a plurality of predetermined distribution relations and with a second predetermined distribution relation of the plurality of predetermined distribution relations, the first predetermined distribution relation being associated with a first material and the second predetermined distribution relation being associated with a second material; and an output device that indicates the presence of the first material and indicates a first detected object as accidentally contacting the capacitive sensor when the detected distribution relation matches the first predetermined distribution relation, and that indicates the presence of the second material and indicates a second detected object as intentionally contacting the capacitive sensor when the detected distribution relation matches the second predetermined distribution relation.