公开(公告)号：US20250024173A1

公开(公告)日：2025-01-16

申请号：US18418992

申请日：2024-01-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Junseok KIM ,  Jiwon IM ,  Junhyuk PARK

IPC: H04N25/77 ,  H04N25/709

Abstract: Disclosed is a dynamic vision sensor. The dynamic vision sensor includes a photodiode configured to generate a first photodiode current in response to a change in light due to a movement of an object, a first transistor; a first node connected to the photodiode and the first transistor; a second node connected to the first transistor and being configured to receive a first voltage and receive a second voltage, a ground, a second transistor connected to the first node and the ground, a third node connected to the first transistor and the second transistor, and a current source connected to the third node, wherein the first voltage has a first level and the second voltage has a second level different from the first level.

公开(公告)号：US20240089471A1

公开(公告)日：2024-03-14

申请号：US18321278

申请日：2023-05-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Keun Joo PARK ,  Junhyuk PARK ,  Jiwon IM ,  Junseok KIM

IPC: H04N19/182 ,  H04N19/126 ,  H04N19/132 ,  H04N19/186

CPC classification number: H04N19/182 ,  H04N19/126 ,  H04N19/132 ,  H04N19/186

Abstract: An operation method of an image signal processing device includes receiving a raw pixel code from an external image sensor device including an image pixel, generating a non-linear pixel code by performing non-linear mapping on the raw pixel code, and outputting a downsized pixel code obtained by performing a masking operation on bit positions including a first bit position corresponding to a most significant bit of the non-linear pixel code and a second bit position corresponding to a least significant bit of the non-linear pixel code. An amplitude of the raw pixel code is linear to illuminance of a light incident onto the image pixel, an amplitude of the non-linear pixel code is non-linear to the amplitude of the raw pixel code, and the non-linear pixel code has a first code length, and the downsized pixel code has a second code length smaller than the first code length.