US 12,279,060 B2
Method of operation for visible-infrared image capture with imaging system
Keiji Mabuchi, Los Altos, CA (US)
Assigned to OMNIVISION TECHNOLOGIES, INC., Santa Clara, CA (US)
Filed by OMNIVISION TECHNOLOGIES, INC., Santa Clara, CA (US)
Filed on Sep. 30, 2022, as Appl. No. 17/957,451.
Prior Publication US 2024/0114258 A1, Apr. 4, 2024
Int. Cl. H04N 25/75 (2023.01); H04N 5/33 (2023.01); H04N 23/10 (2023.01)
CPC H04N 25/75 (2023.01) [H04N 5/33 (2013.01); H04N 23/10 (2023.01)] 23 Claims
OG exemplary drawing
 
1. A method of operating an imaging system, the method comprising:
transferring first image charges accumulated during a long exposure period of a first image frame to respective floating diffusion regions of a first pixel and a second pixel;
reading out long exposure image signals from the respective floating diffusion regions to a first storage capacitor associated with the first pixel and a second storage capacitor associated with the second pixel;
transferring second image charges accumulated during a short exposure period of the first image frame to the respective floating diffusion regions of the first pixel and the second pixel;
reading out a short exposure image signal from a corresponding one of the floating diffusion regions to the second storage capacitor; and
reading out storage charge signals from the first storage capacitor and the second storage capacitor to generate image data for the first image frame, wherein the image data is based on a corresponding one of the long exposure image signals associated with the first pixel and the short exposure image signal associated with the second pixel.