US 12,140,711 B2
Control of optical receiver based on environmental condition
Yue Lu, Mountain View, CA (US); Vipul Chawla, Mountain View, CA (US); and Youmin Wang, Mountain View, CA (US)
Assigned to Guangzhou Woya Laideling Technology Co., Ltd., Guangdong Province (CN)
Filed by Guangzhou Woya Laideling Technology Co. Ltd., Guangdong Province (CN)
Filed on Oct. 16, 2020, as Appl. No. 17/073,073.
Prior Publication US 2022/0120881 A1, Apr. 21, 2022
Int. Cl. G01S 7/487 (2006.01); G01S 7/486 (2020.01); G01S 7/4865 (2020.01); G01S 7/4912 (2020.01); G01S 17/08 (2006.01)
CPC G01S 7/4917 (2013.01) [G01S 7/4865 (2013.01); G01S 7/4868 (2013.01); G01S 7/487 (2013.01); G01S 17/08 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An apparatus, the apparatus being part of a Light Detection and Ranging (LiDAR) module of a vehicle and comprising:
a receiver circuit including a photodiode and an amplifier circuit; and
a controller configured to:
obtain an ambient light intensity;
based on the ambient light intensity, set a multiplication ratio by which the photodiode converts incident light to a photocurrent;
obtain, from the amplifier circuit, an output signal based on the photocurrent; and
perform a ranging operation based on the output signal;
wherein the controller is further configured to set the multiplication ratio to a first ratio based on the ambient light intensity within a first intensity range, and set the multiplication ratio to a second ratio based on the ambient light intensity within a second intensity range.