Patent ID: 9052287
Filing Date: 2015-06-09
Classification: G01J,G01N,H03F

Abstract:
1. A method of detecting fluorescence emission from a target comprising: irradiating the target with a light pulse, wherein the light pulse transitions between an on state and an off state; receiving a fluorescence emission signal in response to irradiating the target with the light pulse, and thereby generating an electrical signal; applying the first electrical amplifier gain to the electrical signal using the first electrical amplifier to generate a first amplified electrical output signal; level shifting an input offset voltage of a second electrical amplifier in accordance with the first amplified electrical output signal, wherein level shifting the input offset voltage reduces a direct current (DC) voltage offset of the first amplified electrical output signal; applying a third gain to the first amplified electrical output signal to generate a second amplified electrical output signal; and applying an authentication algorithm to the second amplified electrical output signal, and thereby validating the target.