Active Column Sensor™ (ACS):

Unlike the conventional Active Pixel Sensor (APS) architecture which employs a source follower type amplifier per pixel (or a small group of pixels), Dynamax® Imaging’s unique and patented Active Column Sensor™ (ACS) architecture shares a true closed loop operational amplifier among all of the pixels in a column (or a small group of columns), therefore eliminating the undesirable gain variations associated with the APS architecture. Further, since only the input FET of the ACS amplifier resides in the pixel, it also achieves a better fill-factor than the APS architecture.

Active Pixel Sensor (APS)
pixel vs. Active Column Sensor (ACS)-Pixel

Active Pixel Sensor (APS)

Active Column Sensor (ACS)

Gain Setting = Low

Low < Gain Setting < High

Gain Setting = High

Correlated Multi-Sampling (CMS™)

Unlike traditional digital Correlated Double-Sampling (CDS) where pixel reset level and pixel signal level are samples/digitized once each and dierenced to reduce correlated components of noise, Dynamax® Imaging’s unique and patented digital Correlated Multi-Sampling (CMS™) involves sampling/digitizing pixel reset level and pixel signal level multiples times each and dierentially averaging them to reduce both correlated and  uncorrelated (random) components of noise.


2x CMS™ (before averaging)

4x CMS™ (before averaging)

Intra-Frame HDR Imaging

Unlike traditional inter-frame HDR imaging where frames with dierent exposure times are digitally combined to obtain an HDR frame, Dynamax® Imaging’s unique and patented intra-frame HDR imaging is accomplished at the pixel level by digitally combining sub-pixels with dierent exposure times to obtain an HDR pixel, which minimizes the undesirable motion blur artifacts associated with inter-frame HDR imaging.

Short Exposure

Long Exposure

Intra-frame HDR Imaging