FINGER SKIN PAPILLARY LINE PATTERN SENSOR Russian patent published in 2003 - IPC

FIELD: identity means or else devices for reading out and identifying fingerprints. SUBSTANCE: sensor designed for organizing computer-based systems for passing and giving access to database has means for shaping optical image of papillary lines on matrix surface, exposure setting unit for optical rays irradiating finger papillary lines ,means for charging each capacitive component to predetermined voltage, comparison means, unit for shaping single-bit array of results of comparison of reference voltage with voltage across each of capacitive components upon irradiation of finger papillary lines, and control means. EFFECT: reduced requirements to sensor characteristics without diminishing precision of identification. 17 cl, 4 dwg