Patent ID: 8872096

Claim:
An optical sensor array, comprising: a first set of photosensitive devices arranged in a row and column format and configured to generate a first frame; a second set of photosensitive devices arranged in a row and column format and configured to generate a second frame, wherein the first and second set of photosensitive devices are arranged such that adjacent photosensitive devices in each row and in each column are alternately members of the first and second sets of photosensitive devices; a first output signal electrically connected to and configured to conduct an output from the first set of photosensitive devices; a second output signal electrically connected to and configured to conduct an output from the second set of photosensitive devices; and a comparator configured to receive each of the first and the second output signals as an input signal to the comparator, the comparator generating an output signal if both of the comparator input signals indicate at least one of the photosensitive devices from each set is enabled in tandem.