Photo-sensor array with pixel-level signal comparison

摘要

A signal generator produces multi-outbound comparison signals based on initial signal corresponding to illumination of photosensor, and internal comparison signal based on initial signal. The comparison signal is input to neighboring pixels through summing node (110). A comparator (116) outputs a signal indicating relative difference in pixel illumination based on internal comparison signal and summed input signals. Independent claims are also included for the following: (1) computer input device; (2) method for indicating relative difference in illumination of pixels within image sensor array.