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公开(公告)号:US11503229B2
公开(公告)日:2022-11-15
申请号:US17038347
申请日:2020-09-30
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor: Yunhwan Jung , Kyoungmin Koh
IPC: H04N5/355 , H04N5/3745 , H04N5/378
Abstract: An imaging device includes a pixel array with a plurality of pixels each configured to generate a reset signal and an image signal, a sampling circuit including a plurality of samplers connected to column lines, where each sampler generates a first comparison signal by comparing the reset signal with a ramp signal and generates a second comparison signal by comparing the image signal with the ramp signal. An ADC converts each of the first and second comparison signals into a digital signal. Each sampler performs an auto-zero operation for initializing itself before performing the comparing with respect to the reset signal in a first mode, and performs a respective auto-zero operation before performing the comparing for each of the reset signal and the image signal in a second mode.
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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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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:US20200244903A1
公开(公告)日:2020-07-30
申请号:US16845137
申请日:2020-04-10
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor: Yunhwan Jung , Sunyool Kang , Jaehong Kim
IPC: H04N5/369 , H04N5/357 , H04N5/3745 , H04N5/376 , H04N5/378
Abstract: A comparing circuit may include a first amplifier and a second amplifier. The first amplifier performs a correlated double sampling operation in response to a pixel signal and a ramp signal, and the second amplifier amplifies an output signal of the first amplifier. The second amplifier includes a current stabilization circuit that supplies current to the second amplifier during the correlated double sampling operation irrespective of the output signal of the first amplifier.
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公开(公告)号:US10313616B2
公开(公告)日:2019-06-04
申请号:US15434605
申请日:2017-02-16
Applicant: Samsung Electronics Co., Ltd.
Inventor: Yunhwan Jung , Sunyool Kang , Kyoungmin Koh , Seungjin Lee
Abstract: An image sensor includes first pixels and second pixels arranged in alternating order along a first direction, first output lines extending in a second direction that is perpendicular to the first direction and respectively connected to the first pixels, second output lines extending in the second direction and respectively connected to the second pixels, first analog circuit blocks and second analog circuit blocks arranged in alternating order along the first direction, and shielding structures disposed each between adjacent ones of the first and second analog circuit blocks. Each of the first analog circuit blocks includes a plurality of first analog circuits respectively connected to the first output lines. Each of the second analog circuit blocks includes a plurality of second analog circuits respectively connected to the second output lines.
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