公开(公告)号：US20250035790A1

公开(公告)日：2025-01-30

申请号：US18913160

申请日：2024-10-11

Applicant: TOPPAN HOLDINGS INC.

Inventor： Kunihiro HATAKEYAMA ,  Tomohiro NAKAGOME ,  Hiromitsu HARIU ,  Takahiro AKUTSU ,  Masanori NAGASE

IPC: G01S17/894 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/18

Abstract: A range imaging apparatus includes a light source unit; a light receiving unit including a pixel having a photoelectric conversion device and charge storages, and a pixel driver circuit that distributes and stores the charge into the charge storages; and a range image processing unit that calculates a distance to a subject in the measurement space are included. Subframes are provided per frame, and the range image processing unit stores the charge by controlling the storage timing such that the storage timing relative to the emission timing is relatively different in each of the subframes, and selects a subframe for calculating the distance from the subframes based on the amounts of charge stored per unit integration count in each of the subframes.

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.