公开(公告)号：US11317048B2

公开(公告)日：2022-04-26

申请号：US16657364

申请日：2019-10-18

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim

IPC: H04N5/378 ,  H04N5/341

Abstract: An image sensing device is provided to comprise: an image sensing region including a first pixel and a second pixel that produce a first pixel signal and a second pixel signal, respectively, in response to reception of light incident on the image sensing region; and a signal processing circuit electrically coupled to the image sensing region and operable to convert the first pixel signal and the second pixel signal to a first digital output and a second digital output, respectively, the signal processing circuit including a first node configured to receive the first pixel signal and the second pixel signal and a second node configured to receive ramp signals used for conversion of the first pixel signal and the second pixel signal.

公开(公告)号：US10965897B2

公开(公告)日：2021-03-30

申请号：US16219099

申请日：2018-12-13

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim

IPC: H04N5/357 ,  H04N5/378 ,  H04N5/374 ,  H04N5/365 ,  H04N9/04 ,  H01L27/146 ,  H04N1/00 ,  H03M1/12 ,  H03M1/46 ,  H03M1/06 ,  H03M1/08 ,  H04N5/3745 ,  H04N5/376

Abstract: A comparison device includes a comparison block suitable for comparing a pixel signal with a ramp signal and outputting a comparison signal; a banding value generation block suitable for generating a banding value using a setting code value and an analog-digital conversion code value; and a control block suitable for controlling a current an input network of the comparison block according to the banding value outputted from the banding value generation block.

公开(公告)号：US10805568B2

公开(公告)日：2020-10-13

申请号：US16218941

申请日：2018-12-13

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim

IPC: H04N5/378 ,  H04N5/376

Abstract: A ramp signal generation device may be provided to include a ramp signal generator including a plurality of local ramp signal generators, each local ramp signal generator structured to generate a local ramp signals having a local ramp range based on a control of an external control unit, an AC coupler coupled to the ramp signal generator to receive local ramp signals from the ramp signal generator, the AC couple structured to perform AC coupling on the received local ramp signals and generate AC-coupled ramp signals, and an integrator coupled to the AC coupler to receive the AC-coupled ramp signals and structured to integrate the AC-coupled ramp signals into a ramp signal having a full ramp range.

公开(公告)号：US11330214B2

公开(公告)日：2022-05-10

申请号：US16716110

申请日：2019-12-16

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim

IPC: H04N5/3745 ,  H01L27/146 ,  H04N5/378 ,  H04N5/374 ,  H04N5/361 ,  H04N5/357 ,  H04N5/369

Abstract: A comparator is provided to comprise a comparison circuit including a first transistor configured to receive a ramp signal and a second transistor configured to receive a pixel signal, the comparison circuit configured to compare the ramp signal and the pixel signal and output a comparison signal at an output node, and an output swing control circuit including a third transistor coupled to the first transistor and the second transistor, and the output swing control circuit including a current path to decrease an amount of current flowing through the second transistor.

公开(公告)号：US20200304744A1

公开(公告)日：2020-09-24

申请号：US16657364

申请日：2019-10-18

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim

IPC: H04N5/378 ,  H04N5/341

Abstract: An image sensing device is provided to comprise: an image sensing region including a first pixel and a second pixel that produce a first pixel signal and a second pixel signal, respectively, in response to reception of light incident on the image sensing region; and a signal processing circuit electrically coupled to the image sensing region and operable to convert the first pixel signal and the second pixel signal to a first digital output and a second digital output, respectively, the signal processing circuit including a first node configured to receive the first pixel signal and the second pixel signal and a second node configured to receive ramp signals used for conversion of the first pixel signal and the second pixel signal.

公开(公告)号：US20190335128A1

公开(公告)日：2019-10-31

申请号：US16219246

申请日：2018-12-13

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim ,  Tae-Hoon Kim ,  Hyun-Mook Park

IPC: H04N5/3745 ,  H04N5/378 ,  H04N5/376 ,  H04N5/357 ,  H04N9/04 ,  H01L27/146

Abstract: Provided are a comparison device that may minimize an influence of banding noise by offsetting the banding noise, and a CMOS image sensor including the comparison device. The comparison device may include a comparison circuit configured to compare a pixel signal and a ramp signal with each other and output a comparison signal, a banding noise adjustment circuit coupled to the comparison circuit to adjust electrical characteristic values of the comparison circuit, a banding value generation circuit coupled to the banding noise adjustment circuit to provide the banding noise adjustment circuit with a banding value generated based on a setting code value, and a banding noise reduction circuit coupled to the banding noise adjustment circuit and configured to reduce the banding noise of the comparison circuit by adjusting electrical characteristic values of the comparison circuit.

公开(公告)号：US20190281244A1

公开(公告)日：2019-09-12

申请号：US16218206

申请日：2018-12-12

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim ,  Min-Kyu Kim

IPC: H04N5/378 ,  H04N5/3745 ,  H01L27/146

Abstract: A comparison device includes a multi-step pixel signal generation circuit coupled to a pixel to receive a pixel signal and generate a multi-step pixel signal based on the pixel signal according to a multi-step trigger signal and a multi-step size control signal; a comparison circuit coupled to the multi-step pixel signal generation circuit to compare a ramp signal with the multi-step pixel signal and output a comparison signal; and a control circuit coupled to the multi-step pixel signal generation circuit and the comparison circuit to detect crossings of the multi-step pixel signal and the ramp signal based on the comparison signal from the comparison circuit and output the multi-step size control signal to the multi-step pixel signal generation circuit.

公开(公告)号：US10757356B2

公开(公告)日：2020-08-25

申请号：US16219246

申请日：2018-12-13

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim ,  Tae-Hoon Kim ,  Hyun-Mook Park

IPC: H04N5/3745 ,  H04N5/378 ,  H01L27/146 ,  H04N5/357 ,  H04N9/04 ,  H04N5/376

Abstract: Provided are a comparison device that may minimize an influence of banding noise by offsetting the banding noise, and a CMOS image sensor including the comparison device. The comparison device may include a comparison circuit configured to compare a pixel signal and a ramp signal with each other and output a comparison signal, a banding noise adjustment circuit coupled to the comparison circuit to adjust electrical characteristic values of the comparison circuit, a banding value generation circuit coupled to the banding noise adjustment circuit to provide the banding noise adjustment circuit with a banding value generated based on a setting code value, and a banding noise reduction circuit coupled to the banding noise adjustment circuit and configured to reduce the banding noise of the comparison circuit by adjusting electrical characteristic values of the comparison circuit.

公开(公告)号：US10681297B2

公开(公告)日：2020-06-09

申请号：US16154492

申请日：2018-10-08

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim ,  Min-Kyu Kim

IPC: H04N5/378 ,  H04N5/374 ,  H04N9/04 ,  H04N5/3745

Abstract: A comparison device includes an offset generation circuit that includes an input port to receive an offset control signal and is structured to generate an offset based on the received offset control signal; a comparison circuit comprising a first input port coupled to the offset generation circuit to receive a first input signal and a second input port coupled to receive a second input signal that is offset by the offset generated by the offset generation circuit and operable to compare the first input signal with the second input signal to produce a comparison signal; and a control circuit coupled to the comparison circuit to receive the comparison signal and operable to detect a crossing of the first input signal and the second input signal according to the comparison signal circuit and to output the offset control signal to the offset generation circuit.

公开(公告)号：US20190166325A1

公开(公告)日：2019-05-30

申请号：US16204963

申请日：2018-11-29

Applicant: SK hynix Inc.

Inventor： Hyeon-June Kim

IPC: H04N5/3745 ,  H03M1/46 ,  H04N5/378

Abstract: A successive approximation register (SAR) analog-digital converter (ADC) may include a comparison circuit coupled to an array of pixels arranged in rows and columns to receive a first pixel signal and a second pixel signal from a first column and a second column, respectively, and structured to compare each of the first and second pixel signals with a reference voltage and output comparison signals; an analog-digital conversion mode decision circuit located to receive the comparison signals from the comparison circuit and structure to provide a mode decision value which decides an analog-digital conversion mode out of different analog-digital conversion modes based on the comparison signals from the comparison circuit; and a shared circuit shared by the first and second columns, and structured to generate the reference voltage based on the comparison signals from the comparison circuit and the mode decision value from the analog-digital conversion mode decision circuit, the shared circuit outputting the reference voltage to the comparison circuit.