Patent ID: 9727770
Date: 2017-08-08
CPC Classifications: G06K

Claim:
1. A method for controllably fitting analog biometric signals into an input range of an analog-to-digital converter (ADC) operatively connected to a biometric device, the method comprising: receiving the analog biometric signals representing captured biometric data from the biometric device; determining a distribution of the analog biometric signals with respect to the input range of the ADC, wherein the input range is divided into at least one removed range and an effective input range that comprises a safe range and one or more adjustable allowed input ranges; based on the distribution, determining if a number of analog biometric signals in each removed range differs from a predetermined number of biometric signals to be included in each removed range; and adjusting, based at least in part on noise in the analog biometric signals, a number of analog biometric signals in at least one adjustable allowed input range when the number of analog biometric signals differs from the predetermined number.