FINGERPRINT SENSORS AND SYSTEMS INCORPORATING FINGERPRINT SENSORS

摘要

Various embodiments of access control systems and fingerprint sensing systems are disclosed. One or more fingerprints of an authorized person are recorded in a fingerprint database together with a sequence of angular positions. The authorized person may subsequently gain access to a secured item by scanning the authorized person's finger or fingers in accordance with the sequence of angular positions. Various embodiments of fingerprint sensors for determining the angular position of a finger on the sensor are also disclosed.

主权项

1. A method of operating an access control system, the method comprising:
recording fingerprint data corresponding to one or more fingers of a particular authorized person; recording a sequence of angular finger positions for the particular authorized person; providing a fingerprint sensor and a plurality of drive signal infection points at least partially surrounding the fingerprint sensor; receiving a series of fingerprint signals from the fingerprint sensor, wherein each fingerprint signal corresponds to at least one drive signal coupled to the fingerprint sensor by a finger; if the series of fingerprint signals corresponds to the recorded fingerprint data and the recorded sequence of angular finger positions, then providing an authorization signal, wherein the angular finger position of each fingerprint signal is determined by determining the at least one drive signal to which that fingerprint signal corresponds.