公开(公告)号：US20140146210A1

公开(公告)日：2014-05-29

申请号：US14067293

申请日：2013-10-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyeokjong Lee ,  Byung-Jo Kim ,  Jaejung Park ,  Yunjung Kim ,  Jinho Seo ,  Seung Hyun Lim ,  Seogheon Ham

IPC: H04N5/361

CPC classification number: H04N5/361 ,  H04N5/378

Abstract: A solid state imaging device includes a pixel array comprising a plurality of photoelectric conversion devices and an analog to digital conversion (ADC) circuit configured to convert an image signal received from the pixel array to a digital signal responsive to a ramp signal and a gain setting. The solid state imaging device further includes a ramp signal generator circuit configured to generate the ramp signal with a slope that varies responsive to a control signal and a dark level offset compensation circuit configured to generate the control signal responsive to the gain setting and a dark level measurement.

Abstract translation: 固态成像装置包括像素阵列，其包括多个光电转换装置和模数转换（ADC）电路，模拟数字转换（ADC）电路被配置为响应于斜坡信号和增益设置将从像素阵列接收的图像信号转换为数字信号 。 固态成像装置还包括斜坡信号发生器电路，该斜坡信号发生器电路被配置为产生具有响应于控制信号变化的斜率的斜坡信号和配置成响应于增益设置产生控制信号的暗电平偏移补偿电路和暗电平 测量。

公开(公告)号：US11895420B2

公开(公告)日：2024-02-06

申请号：US17718450

申请日：2022-04-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Myeongjin Oh ,  Jaejung Park ,  Hyosang Kim ,  Sukho Shin ,  Haneul Jung

IPC: H04N25/75 ,  H04N25/77 ,  H04N25/673

CPC classification number: H04N25/75 ,  H04N25/673 ,  H04N25/77

Abstract: In an example embodiment, a ramp generator includes a ramp circuit that receives a first ramp enable signal from a control circuit during a first ramp period, the first ramp period including a first reset period and a first sensing period, and the ramp circuit being configured to output a first ramp signal to a correlated double sampling circuit; an emphasis circuit that increases a voltage level of the first ramp signal during the first reset period, based on a first enable signal received from the control circuit; and a pre-emphasis circuit that further increases the voltage level of the first ramp signal during a first pre-emphasis period in the first reset period, based on a second enable signal received from the control circuit.

公开(公告)号：US11423851B2

公开(公告)日：2022-08-23

申请号：US16940535

申请日：2020-07-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyuik Cho ,  Jaejung Park

IPC: G09G3/20 ,  G09G3/34 ,  G06T3/40 ,  G06T7/30 ,  G06F1/3203

Abstract: A driver circuit of an image sensor is provided. The driver circuit includes a row decoder to decode an address of a target row of a pixel array and generate an operation directing signal corresponding to the target row; a digital logic circuit including: a target row logic circuit to generate a pixel control signal based on the operation directing signal; a power switch configured to connect a power supply voltage to the target row logic circuit during a first time and isolate the power supply voltage from the target row logic circuit during a second time, based on the operation directing signal; and an output circuit configured to output a default signal during the second time; and a row driver configured to drive the target row based on the pixel control signal during the first time and drive the target row based on the default signal during the second time.