US 12,422,549 B2
Distance measurement sensor
Tatsuki Nishino, Kanagawa (JP)
Assigned to Sony Semiconductor Solutions Corporation, Kanagawa (JP)
Appl. No. 17/634,123
Filed by Sony Semiconductor Solutions Corporation, Kanagawa (JP)
PCT Filed Sep. 11, 2020, PCT No. PCT/JP2020/034611
§ 371(c)(1), (2) Date Feb. 9, 2022,
PCT Pub. No. WO2021/054269, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 2019-169425 (JP), filed on Sep. 18, 2019.
Prior Publication US 2022/0317298 A1, Oct. 6, 2022
Int. Cl. G01S 17/10 (2020.01); G01S 7/481 (2006.01); G01S 7/4863 (2020.01); G01S 7/487 (2006.01); G01S 17/894 (2020.01); G01S 17/931 (2020.01)
CPC G01S 17/10 (2013.01) [G01S 7/4817 (2013.01); G01S 7/4863 (2013.01); G01S 7/487 (2013.01); G01S 17/894 (2020.01); G01S 17/931 (2020.01)] 16 Claims
OG exemplary drawing
 
1. A light detecting device comprising:
an avalanche photodiode, wherein an electrode of the avalanche photodiode is coupled to a first node;
a first switch coupled to the first node, and coupled to a first potential line via a first current source;
a second switch coupled to the first node, and coupled to the first potential line via a second current source;
a delay circuit coupled to the first switch and the second switch; and
a third switch coupled to the first node and to a second potential line.