US 12,192,647 B2
Signal processing device, signal processing method, and detection sensor
Shun Kaizu, Kanagawa (JP); and Takahiro Miyazaki, Kanagawa (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/927,791
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed May 21, 2021, PCT No. PCT/JP2021/019303
§ 371(c)(1), (2) Date Nov. 25, 2022,
PCT Pub. No. WO2021/246194, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 2020-097452 (JP), filed on Jun. 4, 2020.
Prior Publication US 2023/0217117 A1, Jul. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 23/745 (2023.01); H04N 23/71 (2023.01)
CPC H04N 23/745 (2023.01) [H04N 23/71 (2023.01)] 16 Claims
OG exemplary drawing
 
1. A signal processing device comprising:
a count unit that counts a first count number, which is a count number of pixels in which a first luminance change in a positive direction is detected, and a second count number, which is a count number of pixels in which a second luminance change in a negative direction is detected, in an image output from a light receiving unit at a predetermined frame rate and indicating a luminance change;
a coefficient generation unit that generates a coefficient corresponding to a time at which the luminance change is detected; and
an integrating unit that integrates a multiplication result of the count number of the pixels and the coefficient,
wherein the count unit, the coefficient generation unit, and the integrating unit are each implemented via at least one processor.