A Delta-Readout Scheme for Low-Power CMOS Image Sensors With Multi-Column-Parallel SAR ADCs.

This paper presents a power-saving readout scheme for CMOS image sensors (CISs) that utilizes the image properties. The proposed delta-readout (A-readout) scheme reads the signal difference between two pixels located next to each other (Apixel) by utilizing the most significant bits (MSBs) information of the previous pixel. By effectively reducing the dynamic range of the signal, compensated by th...