US 12,225,309 B2
Photoelectric conversion apparatus, A/D converter, and equipment
Tetsuya Itano, Kanagawa (JP); Kohichi Nakamura, Kanagawa (JP); and Daisuke Kobayashi, Saitama (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Apr. 10, 2023, as Appl. No. 18/297,721.
Application 18/297,721 is a continuation of application No. 17/590,007, filed on Feb. 1, 2022, granted, now 11,653,121.
Claims priority of application No. 2021-016895 (JP), filed on Feb. 4, 2021; and application No. 2021-016896 (JP), filed on Feb. 4, 2021.
Prior Publication US 2023/0247322 A1, Aug. 3, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 25/75 (2023.01); H03M 3/00 (2006.01); H04N 25/42 (2023.01)
CPC H04N 25/75 (2023.01) [H03M 3/30 (2013.01); H03M 3/494 (2013.01); H04N 25/42 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A photoelectric conversion apparatus comprising:
a light receiving circuit configured to convert light into an electrical signal;
a readout circuit configured to read out an analog signal corresponding to the electrical signal;
a ΔΣ A/D converter configured to convert the analog signal into a digital signal; and
a control circuit configured to change a gain of the photoelectric conversion apparatus in accordance with a change of a driving mode of the photoelectric conversion apparatus,
wherein the readout circuit comprises a plurality of sample-and-hold circuits, and
wherein the readout circuit inputs, to the ΔΣ A/D converter, a signal representing a difference between signals held by the plurality of sample-and-hold circuits.