Patent ID: 11928881
Assignee: JAPAN DISPLAY INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A detection device comprising:
a sensor unit;
a detector configured to receive an output from a sensor;
a detection controller configured to drive and control the sensor unit and the detector; and
a processor configured to perform processing in accordance with an output from the detector, wherein
the detection controller drives the sensor unit and the detector and determines
a coordinate detection duration in which a coordinate of a detection target body contacting or nearby the sensor unit is detected, and
a surface information detection duration in which a concavity-convexity pattern on the surface of the detection target body is detected,

the detector alternately executes detection of the coordinate of the detection target body in the coordinate detection duration and detection of the concavity-convexity pattern in the surface information detection duration, and
the processor
acquires the coordinate of the detection target body and the concavity-convexity pattern from the detector,
calculates a difference value between the coordinates of the detection target body detected in the coordinate detection durations before and after the surface information detection duration in which the concavity-convexity pattern is acquired,
holds the acquired concavity-convexity pattern when the difference value is equal to or smaller than a predetermined value, and
discards the acquired concavity-convexity pattern when the difference value is larger than the predetermined value.