Key points are not available for this paper at this time.
Rolling-shutter CMOS image sensors (CISs) are widely used 1,2. However, the distortion of moving subjects remains an unresolved problem, regardless of the speed at which these sensors are operated. It has been reported that by adopting in-pixel analog memory (MEM) in pixels, a global shutter (GS) can be achieved by saving all pixels simultaneously as stored charges 3,4. However, as signals from a storage unit are read in a column-wise sequence, a light-shielding structure is required for the MEM to suppress the influence of parasitic light during the reading period. Pixel-parallel ADCs have been reported as methods of implementing GS on a circuit 5,6. However, these techniques have not been successful in operations on megapixels because they do not address issues such as the timing constraint for reading and writing a digital signal to and from an ADC in a pixel owing to increase in the number of pixels and the increase in the total power consumption of massively parallel comparators (CMs).
Sakakibara et al. (Thu,) studied this question.