公开(公告)号：US20210274121A1

公开(公告)日：2021-09-02

申请号：US17032373

申请日：2020-09-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sunjung KIM ,  Sejun KIM ,  Hoyong NA ,  Seongyeop PARK ,  Jihun SHIN ,  Minwoo LEE ,  Youngtae JANG ,  Youngkyun JEONG ,  Jinkyeong HEO

IPC: H04N5/3745 ,  H04N5/378 ,  H04N5/369

Abstract: An image sensor includes a dual conversion gain pixel to output a high conversion gain signal according to a high conversion gain and output a low conversion gain signal according to a low conversion gain, by adjusting a conversion gain; a scaler to scale a voltage level of the high conversion gain signal; a ramp generator to generate a first ramp signal and a second ramp signal, slopes of the first and second ramp signals being different from each other; a comparator to compare the scaled high conversion gain signal and the first ramp signal to output a first comparison result, and compare the low conversion gain signal and the second ramp signal to output a second comparison result; and a counter to output a first counting result value based on the first comparison result and output a second counting result value based on the second comparison result.