| 主权项 |
1. A method of enrolling a fingerprint of a user's finger, by means of an electronic device comprising:
a touch sensor for touch-based control of said electronic device, said touch sensor having an active area corresponding to a first surface portion of said electronic device; and a fingerprint sensor having an active area corresponding to a second surface portion of said electronic device, said method comprising the steps of:
a) acquiring, from said touch sensor, for each finger placement in a sequence of finger placements on said fingerprint sensor, a touch sensor signal indicative of a sub-area of said touch sensor being touched by said finger;b) acquiring, from said fingerprint sensor, for each finger placement in said sequence of finger placements on said fingerprint sensor, a partial fingerprint image of a portion of said fingerprint;c) determining, for each finger placement in said sequence of finger placements on said fingerprint sensor, a positional relationship between said portion of the fingerprint and said finger based on said sub-area and a positional relationship between said first and second surface portions of the electronic device;d) forming a fingerprint template based on said acquired partial fingerprint images and said determined positional relationships; ande) saving said fingerprint template together with an identifier for said fingerprint to thereby enroll said fingerprint. |
