公开(公告)号：US20220232186A1

公开(公告)日：2022-07-21

申请号：US17523100

申请日：2021-11-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyuk OH ,  Sungyong KIM ,  Beomsu YUN

IPC: H04N5/376 ,  H04N5/378 ,  H03K3/037 ,  H03K19/21 ,  H03K19/20

Abstract: An image sensor is provided. The image sensor includes a counting code generator configured to generate a counting code, a pixel array including at least one pixel, a correlated double sampling (CDS) circuit configured to compare a magnitude of a pixel signal output from the at least one pixel with a magnitude of a ramp signal and to output a corresponding comparison signal, a pulse generator configured to generate a pulse signal synchronized with a first clock signal based on the comparison signal, and a counter circuit configured to latch a value of the counting code to correspond to a transition of a level of the comparison signal based on the pulse signal.

公开(公告)号：US20240214552A1

公开(公告)日：2024-06-27

申请号：US18391062

申请日：2023-12-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Beomsu YUN ,  Hyuk OH

IPC: H04N17/00 ,  H04N25/76 ,  H04N25/78

CPC classification number: H04N17/002 ,  H04N25/7795 ,  H04N25/78

Abstract: Provided is an image sensor including a pixel array that includes a plurality of pixels, wherein each of the plurality of pixels is configured to generate an analog signal in response to incident light; an analog-to-digital converter that includes a counter, wherein the analog-to-digital converter is configured to convert the analog signal into a digital signal; and a test circuit that is configured to change a reset code according to a horizontal time period, wherein the reset code corresponds to a first counting value during a reset time period of a test mode according to a count clock signal, and wherein the test circuit is configured to test a counting operation of the counter based on the reset code that changes according to the horizontal time period.

公开(公告)号：US20230155602A1

公开(公告)日：2023-05-18

申请号：US17985642

申请日：2022-11-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaehoon JUN ,  Beomsu YUN

IPC: H03M1/18 ,  H03M1/12 ,  H03F1/02

CPC classification number: H03M1/183 ,  H03M1/1295 ,  H03F1/0222

Abstract: In some embodiments, a circuit includes a first amplifier, a second amplifier, and a counter. The first amplifier operates based on a first power supply voltage and generates a first output signal by comparing a ramp signal and a reset signal of a pixel signal output from a pixel array during a first operation period and comparing the ramp signal and an image signal of the pixel signal output from the pixel array during a second operation period. The second amplifier operates based on the first power supply voltage, generates a second output signal based on the first output signal and adjust a voltage level of the second output signal from a low level to a third level. The counter operates based on a second power supply voltage, counts pulses of the second output signal, and outputs a counting result as a digital signal.