Patent ID: 11864876
Assignee: KATHOLIEKE UNIVERSITEIT LEUVEN, KU LEUVEN R&D
Field: Medical technology (Instruments)
Classification: CPC A  G  H | IPC A  G

Claim 11:
12. A method of light-to-digital conversion, comprising:
during a light-collecting phase, a current integrator, having an integrator output, integrating a current resulting from light-to-current conversion at a light-to-current converter connected as a positive integration input, said integrator output starting from a baseline value and ending at a value to be digitized; and, thereafter,
in a counting phase, said current integrator integrating a reference current connected as a negative integration input, said integrator output starting from said value to be digitized and ending at said baseline value, a time spent integrating said reference current corresponding to said value to be digitized, wherein a counter, providing a digital output, measures said time and outputs a count corresponding to said value to be digitized.