Sequential read-out method and system that employs a single amplifier for multiple columns

摘要

Sequential read-out method and system for reading out an array of photocells are disclosed. The array (14) includes a plurality of photocells (18) that are arranged in rows and columns. A sequential readout circuit (20) is provided for reading out the values of each photocells in a sequential fashion. The sequential readout circuit processes one photocell at a time and can, for example, determine a difference between a final integration light value and a reset value for each photocell in a time sequential manner.