公开(公告)号：US11202021B2

公开(公告)日：2021-12-14

申请号：US16697742

申请日：2019-11-27

Applicant: RAYTHEON COMPANY

Inventor： Ali E. Zadeh ,  Eric J. Beuville ,  Joshua J. Cantrell

IPC: H04N5/335 ,  H04N5/3745 ,  H04N5/378 ,  H01L27/146

Abstract: A digital unit-cell included in an imaging system includes a light sensor configured to generate an electrical charge in response to receiving light, and an energy storage circuit configured to establish a first parasitic capacitance and second large capacitance to store the electrical charge. The digital unit-cell further includes a gain selection circuit and a dual-mode comparator. The gain selection circuit is configured operate in a first mode to invoke the first capacitance and a second mode to invoke the second capacitance. The dual-mode comparator is configured to operate in a first reset mode that generates a first reset signal having a first pulse duration and a second reset mode that generates a second reset signal having a second pulse duration that is a longer than the first pulse duration.

公开(公告)号：US20210160442A1

公开(公告)日：2021-05-27

申请号：US16697742

申请日：2019-11-27

Applicant: RAYTHEON COMPANY

Inventor： Ali E. Zadeh ,  Eric J. Beuville ,  Joshua J. Cantrell

IPC: H04N5/335 ,  H04N5/378 ,  H04N5/3745

Abstract: A digital unit-cell included in an imaging system includes a light sensor configured to generate an electrical charge in response to receiving light, and an energy storage circuit configured to establish a first parasitic capacitance and second large capacitance to store the electrical charge. The digital unit-cell further includes a gain selection circuit and a dual-mode comparator. The gain selection circuit is configured operate in a first mode to invoke the first capacitance and a second mode to invoke the second capacitance. The dual-mode comparator is configured to operate in a first reset mode that generates a first reset signal having a first pulse duration and a second reset mode that generates a second reset signal having a second pulse duration that is a longer than the first pulse duration.