US 11,843,887 B2
Photoelectric conversion apparatus, photoelectric conversion system, moving body, and semiconductor substrate
Noriyuki Shikina, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 17, 2021, as Appl. No. 17/554,611.
Claims priority of application No. 2020-215242 (JP), filed on Dec. 24, 2020.
Prior Publication US 2022/0210359 A1, Jun. 30, 2022
Int. Cl. H04N 25/75 (2023.01); G05D 1/02 (2020.01); H04N 25/65 (2023.01); H04N 25/79 (2023.01); H04N 25/616 (2023.01)
CPC H04N 25/75 (2023.01) [G05D 1/0246 (2013.01); H04N 25/616 (2023.01); H04N 25/65 (2023.01); H04N 25/79 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a plurality of pixels;
a comparator configured to compare an output signal of each of the plurality of pixels with a reference signal; and
a counter of K bits (K is a natural number) configured to operate in parallel with operation of the comparator,
wherein the apparatus converts the output signal of each of the plurality of pixels into a digital signal using an output of the comparator and an output of the counter;
an addition unit configured to add a plurality of the digital signals,
wherein the addition unit includes a serial binary adder of M bits (M is a natural number less than K), and
wherein the serial binary adder of M bits is configured to perform addition processing and subtraction processing in a multiple sampling.