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公开(公告)号：US11516416B2
公开(公告)日：2022-11-29
申请号：US17681141
申请日：2022-02-25
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyung-Min Kim , Heesung Chae , Jaeyoung Bae , Sukki Yoon
Abstract: An image sensor compensates for noise. The image sensor includes a pixel array that includes a common monitor output line, a first monitoring pixel outputting a first monitoring signal, a second monitoring pixel outputting a second monitoring signal, and an active pixel configured to output a sensing signal based on an incident light. The image circuit also includes a binning circuit that receives the first and second monitoring signals through the common monitor output line and generates an average monitoring signal by performing binning on the first and second monitoring signals, and an analog-to-digital converter that detects an alternating current (AC) component of the average monitoring signal and couples the sampled AC component of the average monitoring signal to the sensing signal, thereby compensating for noise.
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12.发明授权公开(公告)号：US11503239B2
公开(公告)日：2022-11-15
申请号：US16822930
申请日：2020-03-18
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sunyool Kang , Yunhwan Jung , Heesung Chae , Sukki Yoon , Yongjun Cho
Abstract: An electronic circuit is provided. The electronic circuit includes a first current generating circuit configured to output a first operating current based on a first operating voltage; and an input circuit configured to: receive a first current corresponding to a first input voltage and a second current corresponding to a second input voltage, wherein the first current and the second current are based on the first operating current; receive a third current and a fourth current that are generated based on the first operating voltage; and generate a fifth current corresponding to the second input voltage based on a second operating current. The electronic circuit is configured to generate an output voltage that is associated with a difference between the first input voltage and the second input voltage based on the second current, the fourth current and the fifth current, and the fourth current corresponds to the third current.
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公开(公告)号：US10827145B2
公开(公告)日：2020-11-03
申请号：US16703313
申请日：2019-12-04
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Yunhong Kim , Kyung-Min Kim , Heesung Chae
Abstract: An analog to digital converting circuit includes a correlated double sampling circuit (CDS) that compares a pixel signal with a ramp signal, and outputs a comparison signal, a timing amplifier that increases an active time of the comparison signal “N” times, and outputs an extended signal, wherein the “N” is a positive integer, and a counter that outputs a digital signal corresponding to the pixel signal in response to the extended signal and a first clock signal.
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公开(公告)号：US20250038760A1
公开(公告)日：2025-01-30
申请号：US18596913
申请日：2024-03-06
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Yunhong Kim , Heesung Chae , Keunyeol Park , Ingyeong Shin , Moo Young Kim
Abstract: Disclosed is an analog-to-digital converter (ADC) circuit for digitizing a pixel signal into a digital signal of positive integer (N) bits. The ADC includes a ramp generator, a clock, a comparator, and a counter. A system clock signal allows the ramp generator to generate a ramp signal and the clock generator to generate first to N-th clock signals. The comparator generates a comparison signal based on a comparison of the pixel signal, received from a pixel array, and the ramp signal. The counter includes an additional latch circuit and first to N-th latch circuits. The additional latch circuit generates an additional binary signal based on the system clock signal and the comparison signal, and the first to N-th latch circuits generate first to N-th latch signals based on the comparison signal and corresponding clock signal.
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公开(公告)号：US12143739B2
公开(公告)日：2024-11-12
申请号：US17857812
申请日：2022-07-05
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yunhong Kim , Yunhwan Jung , Heesung Chae , Mooyoung Kim , Haesick Sul
IPC: H04N25/75 , H04N25/63 , H04N25/633
Abstract: An image sensor may include a pixel array a pixel array including an active pixel and an optical black pixel, the active pixel configured to generate a first pixel signal, and the optical black pixel configured to generate a second pixel signal, a first biasing circuit configured to bias the first pixel signal based on a first bias voltage, a first analog-to-digital converter configured to convert the biased first pixel signal into a first digital signal, a second biasing circuit configured to bias the second pixel signal based on a second bias voltage, and a second analog-to-digital converter configured to convert the biased second pixel signal into a second digital signal, the second digital signal configured to generate smaller random noise than the first analog-to-digital converter.
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Patent Agency Ranking
公开(公告)号：US11284026B2
公开(公告)日：2022-03-22
申请号：US16906185
申请日：2020-06-19
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyung-Min Kim , Heesung Chae , Jaeyoung Bae , Sukki Yoon
Abstract: An image sensor compensates for noise. The image sensor includes a pixel array that includes a common monitor output line, a first monitoring pixel outputting a first monitoring signal, a second monitoring pixel outputting a second monitoring signal, and an active pixel configured to output a sensing signal based on an incident light. The image circuit also includes a binning circuit that receives the first and second monitoring signals through the common monitor output line and generates an average monitoring signal by performing binning on the first and second monitoring signals, and an analog-to-digital converter that detects an alternating current (AC) component of the average monitoring signal and couples the sampled AC component of the average monitoring signal to the sensing signal, thereby compensating for noise.
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公开(公告)号：US11172149B2
公开(公告)日：2021-11-09
申请号：US16503029
申请日：2019-07-03
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Heesung Chae , Yunhwan Jung , Kyung-Min Kim , Kyungtae Kim
Abstract: An image sensing system includes a pixel array, an analog-to-digital converter circuit, and an average calculator. The analog-to-digital converter circuit converts a first pixel signal to first pixel data and converts a second pixel signal to second pixel data. The average calculator generates a first average bit based on a first bit of the first pixel data and a first bit of the second pixel data during a first time and generates a second average bit based on a second bit of the first pixel data and a second bit of the second pixel data during a second time.
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18.发明授权公开(公告)号：US10992894B2
公开(公告)日：2021-04-27
申请号：US16838483
申请日：2020-04-02
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyungtae Kim , Yunhwan Jung , Heesung Chae , Sukki Yoon
Abstract: An image sensor includes a pixel array including pixels that are arranged in a matrix and respectively generate pixel signals, a row driver to drive the plurality of pixels row by row, a timing generator to generate a clock signal and address signals, a column driver to generate a plurality of column selection signals sequentially activated in response to the clock signal and the address signals, and a column array to receive the pixel signals through a plurality of column lines, perform an analog-to-digital conversion on the pixel signals, and sequentially output pixel data values through an output buffer. The column driver may include a clock tree including first delay elements and second delay elements to generate a plurality of delay clock signals, and a decoding circuit to generate the plurality of column selection signals.
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公开(公告)号：US20210120200A1
公开(公告)日：2021-04-22
申请号：US16890422
申请日：2020-06-02
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sunyool Kang , Yongjun Cho , Yunhwan Jung , Heesung Chae , Kyungmin Kim , Haesick Sul , Sukki Yoon
IPC: H04N5/3745 , H01L27/146
Abstract: An image sensor, including a pixel array including a plurality of pixels connected to row lines extending in a first direction and column lines extending in a second direction intersecting the first direction; a ramp voltage generator configured to output a ramp voltage; a sampling circuit including a plurality of comparators, each comparator of the plurality of comparators having a first input terminal connected to a column of the column lines and a second input terminal configured to receive the ramp voltage; and an analog-to-digital converter configured to convert an output of the plurality of comparators to a digital signal, wherein the plurality of comparators include a first comparator connected to a first column line, and a second comparator connected to a second column line adjacent to the first column line in the first direction, wherein each of the first comparator and the second comparator includes a first transistor and a second transistor disposed sequentially in the second direction, and wherein a gap between the first transistor of the first comparator and the second transistor of the first comparator is different from a gap between the first transistor of the second comparator and the second transistor of the second comparator.
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公开(公告)号：US20210084245A1
公开(公告)日：2021-03-18
申请号：US16906185
申请日：2020-06-19
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyung-Min KIM , Heesung Chae , Jaeyoung Bae , Sukki Yoon
IPC: H04N5/357 , H04N5/3745 , H04N3/14
Abstract: An image sensor compensates for noise. The image sensor includes a pixel array that includes a common monitor output line, a first monitoring pixel outputting a first monitoring signal, a second monitoring pixel outputting a second monitoring signal, and an active pixel configured to output a sensing signal based on an incident light. The image circuit also includes a binning circuit that receives the first and second monitoring signals through the common monitor output line and generates an average monitoring signal by performing binning on the first and second monitoring signals, and an analog-to-digital converter that detects an alternating current (AC) component of the average monitoring signal and couples the sampled AC component of the average monitoring signal to the sensing signal, thereby compensating for noise.
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