US 12,070,182 B2
Signal processing device, imaging device, and signal processing method
Kei Kakidani, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/593,505
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Feb. 25, 2020, PCT No. PCT/JP2020/007431
§ 371(c)(1), (2) Date Sep. 20, 2021,
PCT Pub. No. WO2020/202904, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-066240 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0217260 A1, Jul. 7, 2022
Int. Cl. H04N 23/667 (2023.01); A61B 1/00 (2006.01); A61B 1/06 (2006.01); H04N 23/71 (2023.01); H04N 23/73 (2023.01)
CPC A61B 1/00006 (2013.01) [A61B 1/000095 (2022.02); A61B 1/0661 (2013.01); H04N 23/71 (2023.01); H04N 23/73 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A signal processing device, comprising:
an imaging device configured to capture an image; and
a central processing unit (CPU) configured to:
control switch between a switching mode and a non-switching mode, wherein
in the switching mode, the CPU is further configured to:
perform, based on a change in an indication value indicating a brightness of the captured image, switching control between an optical brightness adjustment of the captured image and an electronic brightness adjustment of the captured image, wherein
 the optical brightness adjustment of the captured image is based on a drive of an iris,
 the electronic brightness adjustment of the captured image is based on application of a gain on the captured image, and
 the gain is based on the indication value; and
delay, based on the change in the indication value, change in the gain in the electronic brightness adjustment,
in the non-switching mode, the CPU is further configured to execute the optical brightness adjustment, and
in the non-switching mode, the switching control is not performed based on the change in the indication value.