公开(公告)号：US20240236528A9

公开(公告)日：2024-07-11

申请号：US18141164

申请日：2023-04-28

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Dongjae HAN ,  Haneul JUNG ,  YOUNGHYUN YOON

IPC分类号： H04N25/78 ,  H03K4/48

CPC分类号： H04N25/78 ,  H03K4/48 ,  H04N25/616

摘要： Disclosed is a ramp signal generator. The ramp signal generator includes: a first unit current source including first sub-unit current sources, and configured to output a first unit current during a first time period; and a second unit current source including second sub-unit current sources, and configured to output a second unit current during a second time period. The first sub-unit current sources are configured to operate according to first sub-ramp control signals, respectively. The second sub-unit current sources are configured to operate according to second sub-ramp control signals, respectively. n first sub-ramp control signals among the first sub-ramp control signals are activated, and m sub-ramp control signals among the second sub-ramp control signals are activated, n and m being different natural numbers.

公开(公告)号：US20240179434A1

公开(公告)日：2024-05-30

申请号：US18467318

申请日：2023-09-14

申请人： Samsung Electronics Co., Ltd.

发明人： Dongjae HAN ,  Jaejung PARK ,  Seunghyun LIM ,  Haneul JUNG

IPC分类号： H04N25/75 ,  H04N25/616 ,  H04N25/65

CPC分类号： H04N25/75 ,  H04N25/616 ,  H04N25/65

摘要： A ramp signal generator may include a current cell unit including a plurality of current sources configured to generate current signals, and a resistance unit connected to an output terminal of the current cell unit. The resistance unit may include a load resistor and an offset resistor connected in series with the load resistor and having a resistance based on analog gains.

公开(公告)号：US20240163582A1

公开(公告)日：2024-05-16

申请号：US18213032

申请日：2023-06-22

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Younghyun YOON ,  Haneul JUNG ,  Dongjae HAN

IPC分类号： H04N25/767 ,  H04N25/616 ,  H04N25/772

CPC分类号： H04N25/767 ,  H04N25/616 ,  H04N25/772

摘要： A ramp signal generating device and an image sensor for decreasing the latency of a ramp signal are provided. The ramp signal generating device may include a first circuit configured to detect a capacitance of a parasitic capacitor, a second circuit configured to charge the parasitic capacitor with a first voltage, and a third circuit configured to receive the capacitance as an input to generate a load current causing the ramp signal with a predetermined slope.

公开(公告)号：US20240147089A1

公开(公告)日：2024-05-02

申请号：US18325507

申请日：2023-05-30

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Yongsuk CHOI ,  Younghyun YOON ,  Haneul JUNG ,  Dongjae HAN

IPC分类号： H04N25/60 ,  H04N25/772

CPC分类号： H04N25/60 ,  H04N25/772

摘要： An image sensor includes a pixel array connected to a plurality of column lines, a first ramp signal generator generating a first ramp signal, a second ramp signal generator generating a second ramp signal, and an analog-to-digital conversion (ADC) circuit operating in a first mode. The ADC circuit includes a first comparator group comparing the first ramp signal with a first pixel signal received from a first column line group, among the plurality of column lines, and a second comparator group comparing the second ramp signal with a second pixel signal received from a second column line group, among the plurality of column lines. The comparing of the first ramp signal occurs at a comparison time point different from a comparison time point during which the comparing of the second ramp signal occurs.

公开(公告)号：US20240137672A1

公开(公告)日：2024-04-25

申请号：US18141164

申请日：2023-04-27

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Dongjae HAN ,  Haneul JUNG ,  YOUNGHYUN YOON

IPC分类号： H04N25/78 ,  H03K4/48

CPC分类号： H04N25/78 ,  H03K4/48 ,  H04N25/616

摘要： Disclosed is a ramp signal generator. The ramp signal generator includes: a first unit current source including first sub-unit current sources, and configured to output a first unit current during a first time period; and a second unit current source including second sub-unit current sources, and configured to output a second unit current during a second time period. The first sub-unit current sources are configured to operate according to first sub-ramp control signals, respectively. The second sub-unit current sources are configured to operate according to second sub-ramp control signals, respectively. n first sub-ramp control signals among the first sub-ramp control signals are activated, and m sub-ramp control signals among the second sub-ramp control signals are activated, n and m being different natural numbers.