| 摘要 |
A fingerprint sensor apparatus comprises: a controller (14); and a sensor area 8 formed of a plurality of separately operable sensor sections 16, where each sensor section captures a representation of an area of a fingerprint. The controller is arranged to activate each of the plurality of sensor sections at separate times to obtain a representation of the fingerprint area at each section, thereby permitting a representation of the fingerprint over the entire sensor area to be generated. The sensor sections could be capacitive sensors. Each sensor section may contain an array of pixels (18). The aims of the invention include reducing power usage compared to a single full-area sensor. The sensor may find application in a smart card (2) or an ID token. |
