公开(公告)号：US12022219B2

公开(公告)日：2024-06-25

申请号：US18189154

申请日：2023-03-23

Applicant: SK hynix Inc.

Inventor： Hajime Suzuki

IPC: H04N25/75 ,  H04N25/773 ,  H04N25/778

CPC classification number: H04N25/75 ,  H04N25/773 ,  H04N25/778

Abstract: Provided herein may be an image sensor and a signal conversion method. A signal transducer for converting an analog pixel signal into a digital signal may include an operational amplifier configured to receive a pixel signal, a conversion gain of which is changed, through a first input terminal, receive a ramp signal through a second input terminal, and change polarities of the first input terminal and the second input terminal based on an inverse signal, and a signal manager configured to generate the inverse signal in response to a change in the conversion gain and transfer the inverse signal to the operational amplifier.

公开(公告)号：US11930285B2

公开(公告)日：2024-03-12

申请号：US17726002

申请日：2022-04-21

Applicant: SK hynix Inc.

Inventor： Hajime Suzuki

IPC: H04N25/616 ,  H04N25/46 ,  H04N25/709 ,  H04N25/71 ,  H04N25/77

CPC classification number: H04N25/616 ,  H04N25/46 ,  H04N25/709 ,  H04N25/745 ,  H04N25/77

Abstract: Disclosed is an image sensing device including a plurality of selectors suitable for generating a plurality of selected pixel signals corresponding to one of a plurality of pixel signals; a plurality of signal converters suitable for: setting a plurality of initial voltages which are different from one another, on the basis of a plurality of initialization signals during an initialization period, and generating a plurality of converted pixel signals to which the plurality of initial voltages are respectively reflected, on the basis of the plurality of selected pixel signals and a ramp signal during a readout period; and a calculation circuit suitable for averaging the plurality of converted pixel signals.

公开(公告)号：US20240147095A1

公开(公告)日：2024-05-02

申请号：US18189154

申请日：2023-03-23

Applicant: SK hynix Inc.

Inventor： Hajime Suzuki

IPC: H04N25/75 ,  H04N25/773 ,  H04N25/778

CPC classification number: H04N25/75 ,  H04N25/773 ,  H04N25/778

Abstract: Provided herein may be an image sensor and a signal conversion method. A signal transducer for converting an analog pixel signal into a digital signal may include an operational amplifier configured to receive a pixel signal, a conversion gain of which is changed, through a first input terminal, receive a ramp signal through a second input terminal, and change polarities of the first input terminal and the second input terminal based on an inverse signal, and a signal manager configured to generate the inverse signal in response to a change in the conversion gain and transfer the inverse signal to the operational amplifier.