公开(公告)号：US20240259715A1

公开(公告)日：2024-08-01

申请号：US18450813

申请日：2023-08-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changhyung CHOI ,  Jaehong KIM ,  Jinwoo KIM ,  Daehwa PAIK

IPC: H04N25/78 ,  H03M1/56 ,  H04N17/00

CPC classification number: H04N25/78 ,  H03M1/56 ,  H04N17/002

Abstract: An image sensor is provided. The image sensor according to an example embodiment includes a pixel array including a plurality of pixels, a ramp signal generator configured to generate a ramp signal that increases or decreases with a constant slope, a signal selector configured to output the ramp signal and one of a pixel signal and a test signal output from the pixel array, and a comparison circuit configured to receive the ramp signal and the test signal from the signal selector during a first period, output a first comparison result of the ramp signal and the test signal, receive the pixel signal and the ramp signal from the signal selector during a second period after the first period, and output a second comparison result of the pixel signal and the ramp signal.