Method and fingerprint sensing system for authenticating a candidate fingerprint
AssigneeFingerprint Cards AB
InventorsMats Tuneld, Eric Setterberg
Life of this patent
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Abstract
The present invention generally relates to a method for authenticating a candidate fingerprint using a fingerprint authentication system, and specifically to the possibility of using personalized fingerprint sensor setting for a fingerprint sensor comprised with the fingerprint authentication system. The invention also relates to a corresponding electronic device and to a computer program product. Advantages with the invention include a minimized processing time for acquiring a good quality fingerprint image, thus increasing user convenience. The invention also relates to a corresponding fingerprint sensing system and to a computer program product.
Claims16
A method of authenticating a candidate fingerprint against an enrolled fingerprint of a finger by means of a fingerprint authentication system comprising a fingerprint sensor, a memory and processing circuitry connected to said fingerprint sensor, wherein the method comprises:
- receiving, by said processing circuitry, an authentication request for said finger;
- retrieving, by said processing circuitry from said memory based on said authentication request for said finger, a fingerprint sensor setting associated with a stored enrolment representation of the enrolled fingerprint of said finger, the memory storing a plurality of different sets of sensor settings;
- controlling, by said processing circuitry, said fingerprint sensor using the retrieved fingerprint sensor setting;
- acquiring, by said fingerprint sensor, a fingerprint image of said candidate fingerprint to be authenticated;
- forming, by said processing circuitry, an authentication representation of said candidate fingerprint based on said fingerprint image;
- comparing, by said processing circuitry, said authentication representation with said stored enrolment representation in view of an authentication criterion;
- and
- providing, by said processing circuitry, an authentication signal indicative of a result of the comparison.
A fingerprint sensing system, comprising:
- a fingerprint sensor;
- a memory;
- and
- processing circuitry connected to said fingerprint sensor for:
- receiving an authentication request for said finger;
- retrieving, from said memory based on said authentication request for said finger, a stored fingerprint sensor setting associated with a stored enrolment representation of the enrolled fingerprint of said finger, the memory storing a plurality of different sets of sensor settings;
- controlling an operating point of said fingerprint sensor based on the retrieved fingerprint sensor setting;
- controlling said fingerprint sensor to acquire a fingerprint image of said candidate fingerprint to be authenticated;
- forming an authentication representation of said candidate fingerprint based on said fingerprint image;
- comparing said authentication representation with said stored enrolment representation in view of an authentication criterion;
- and
- providing an authentication signal indicative of a result of the comparison.
A computer program product comprising a computer readable medium having stored thereon computer program means for controlling a portable electronic device, the portable electronic device comprising a fingerprint authentication system including a fingerprint sensor, a memory and processing circuitry, the fingerprint authentication system adapted for authenticating a candidate fingerprint against an enrolled fingerprint of a finger, wherein the computer program product comprises:
- code for receiving an authentication request for said finger;
- code for retrieving a fingerprint sensor setting from said memory based on said authentication request for said finger, the fingerprint sensor setting associated with a stored enrolment representation of the enrolled fingerprint of said finger, the memory storing a plurality of different sets of sensor settings;
- code for controlling said fingerprint sensor using the retrieved fingerprint sensor setting;
- code for acquiring a fingerprint image of said candidate fingerprint to be authenticated;
- code for forming an authentication representation of said candidate fingerprint based on said fingerprint image;
- code for comparing said authentication representation with said stored enrolment representation in view of an authentication criterion;
- and
- code for providing an authentication signal indicative of a result of the comparison.
Dependencies are inferred from the claim text.