초록 ▼

A fingerprint-reading system includes a fingerprint sensor having an active surface sensitive to the pressure and a temperature of a finger. The surface area of this sensor is far smaller than the surface area of the fingerprint to be read. The reading is done when the sensor and the finger are in c

A fingerprint-reading system includes a fingerprint sensor having an active surface sensitive to the pressure and a temperature of a finger. The surface area of this sensor is far smaller than the surface area of the fingerprint to be read. The reading is done when the sensor and the finger are in contact and in a relative motion of sliding of the sensor and the finger with respect to each other. The system reconstitutes a complete image of the fingerprint from the partial images given by the sensor during this motion.

대표청구항 ▼

1. A process for reading a fingerprint, comprising:obtaining a series of partial images of the fingerprint during a sliding relative motion between a finger and a sensor, said sensor having a sensing surface area smaller than a surface of area of an image on said sensor of said fingerprint to be rea

1. A process for reading a fingerprint, comprising:obtaining a series of partial images of the fingerprint during a sliding relative motion between a finger and a sensor, said sensor having a sensing surface area smaller than a surface of area of an image on said sensor of said fingerprint to be read, and having several lines of sensing elements, each partial image partially overlapping a previous partial image, and reconstructing a global image of said fingerprint to be read by correlation of overlapping partial images.