US 12,464,266 B2
Imaging device and analog-to-digital conversion circuit
Yusuke Togasaki, Tokyo (JP)
Assigned to Sony Semiconductor Solutions Corporation, Kanagawa (JP)
Appl. No. 18/548,278
Filed by Sony Semiconductor Solutions Corporation, Kanagawa (JP)
PCT Filed Feb. 1, 2022, PCT No. PCT/JP2022/003860
§ 371(c)(1), (2) Date Aug. 29, 2023,
PCT Pub. No. WO2022/215334, PCT Pub. Date Oct. 13, 2022.
Claims priority of application No. 2021-066051 (JP), filed on Apr. 8, 2021.
Prior Publication US 2024/0137670 A1, Apr. 25, 2024
Prior Publication US 2024/0236526 A9, Jul. 11, 2024
Int. Cl. H04N 25/772 (2023.01); H03M 1/56 (2006.01); H04N 25/76 (2023.01)
CPC H04N 25/772 (2023.01) [H03M 1/56 (2013.01); H04N 25/7795 (2023.01)] 13 Claims
OG exemplary drawing
 
1. An imaging device comprising:
a first pixel circuit including
a first light-receiving circuit configured to generate a first pixel signal corresponding to an amount of received light,
a first comparator configured to generate a first comparison signal by comparing the first pixel signal with a first reference signal having a ramp waveform,
a first control circuit configured to generate a first comparison output signal by turning on and off an output of the first comparison signal on a basis of a first control signal, and
a first latch circuit configured to latch a time code on a basis of transition of the first comparison output signal; and
a generation circuit configured to generate the first control signal,
wherein the first control circuit is configured to generate the first comparison output signal by, on the basis of the first control signal, selectively switching between a first operation of outputting the first comparison output signal corresponding to the first comparison signal and a second operation of outputting the first comparison output signal indicating a signal of a first logic level.