公开(公告)号：US20250004113A1

公开(公告)日：2025-01-02

申请号：US18754289

申请日：2024-06-26

Applicant: TOPPAN Holdings Inc.

Inventor： Takahiro AKUTSU ,  Kazuto YAMAMOTO ,  Takeshi KAWABATA ,  Yuya SHIRAKAWA

IPC: G01S7/487 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/894

Abstract: In a distance image capturing device, the frame cycle includes an accumulation period in which reflected light of the optical pulse is accumulated in the charge accumulation unit, a first output period in which a first voltage value corresponding to the amount of charges accumulated in the charge accumulation unit in the accumulation period is output, an FPN measurement period in which a fixed pattern noise accumulated in the charge accumulation unit is measured, a second output period in which a second voltage value corresponding to the amount of charges accumulated in the charge accumulation unit in the FPN measurement period is output, and a readout period in which a differential signal corresponding to a difference between the first voltage value and the second voltage value is output, and the distance calculation unit calculates the distance to the subject using a signal value of the differential signal.