公开(公告)号：US20250159370A1

公开(公告)日：2025-05-15

申请号：US18938184

申请日：2024-11-05

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Tiejun Dai ,  Bo Mu ,  Menghan Guo ,  Wenlei Yang ,  Qinyi Wang ,  Andreas Suess

IPC: H04N25/47 ,  H04N25/531 ,  H04N25/616 ,  H04N25/767 ,  H04N25/79

Abstract: Hybrid image sensors with on-chip image deblur and rolling shutter distortion correction (and associated systems, devices, and methods) are disclosed herein. In one embodiment, an image sensor includes (a) an event driven sensing array including one or more event vision sensor (EVS) pixels, each configured to capture event data corresponding to contrast information of light incident on the EVS pixel; (b) a pixel array including a plurality of CMOS image sensor (CIS) pixels arranged in one or more CIS pixel rows, each CIS pixel configured to capture CIS data corresponding to intensity of light incident on the CIS pixel, and (c) a rolling shutter distortion correction circuit configured to correct the CIS data for rolling shutter distortion using the event data.

公开(公告)号：US20250119660A1

公开(公告)日：2025-04-10

申请号：US18483501

申请日：2023-10-09

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Andreas Suess ,  Menghan Guo ,  Shoushun Chen

IPC: H04N25/683

Abstract: Event vision sensors with defect pixel suppression (and associated methods) are disclosed herein. In one embodiment, an event vision sensor includes an array of event vision pixels and an event signal processor. The event signal processor is configured to identify event vision pixels of the array that are defective based on noise event occurrence firing rates corresponding to the event vision pixels. The noise event occurrence firing rate for each event vision pixel can be based on measurements of a probability of that event vision pixel detecting a noise event over time. Each event vision pixel can include internal circuitry (e.g., a memory component, such as a latch) that can, when the event vision pixel is identified as defective, be used to disable the event vision pixel from detecting events or to mask an output of the event vision pixel such that events are not read out of the pixel.

公开(公告)号：US20250159376A1

公开(公告)日：2025-05-15

申请号：US18938080

申请日：2024-11-05

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Tiejun Dai ,  Bo Mu ,  Menghan Guo ,  Wenlei Yang ,  Qinyi Wang ,  Andreas Suess ,  Luis Eduardo Garcia Capel

IPC: H04N25/707 ,  H04N23/68 ,  H04N23/84 ,  H04N25/531 ,  H04N25/766 ,  H04N25/79

Abstract: Hybrid image sensors with video frame interpolation (and associated systems, devices, and methods) are disclosed herein. In one embodiment, an imaging system comprises one or more event vision sensor (EVS) pixels, and a plurality of CMOS image sensor (CIS) pixels. Each EVS pixel can be configured to capture event data corresponding to contrast information of light incident on the EVS pixel. Each CIS pixel can be configured to capture CIS data corresponding to intensity of light incident on the CIS pixel. The imaging system can further comprise a deblur circuit configured to deblur the CIS data captured by the plurality of CIS pixels using a first portion of the event data captured by the one or more EVS pixels, and a system processor configured to interpolate a video frame using the deblurred CIS data and all or a subset of the event data.

公开(公告)号：US20250159371A1

公开(公告)日：2025-05-15

申请号：US18938208

申请日：2024-11-05

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Tiejun Dai ,  Bo Mu ,  Menghan Guo ,  Wenlei Yang ,  Qinyi Wang ,  Luis Eduardo Garcia Capel ,  Rui Jiang ,  Andreas Suess

IPC: H04N25/47 ,  H04N23/81 ,  H04N25/53 ,  H04N25/707 ,  H04N25/78

Abstract: Hybrid image sensors with on-chip image deblur (and associated systems, devices, and methods) are disclosed herein. In one embodiment, an image sensor includes (a) a plurality of CMOS image sensor (CIS) pixels configured to capture CIS data corresponding intensity of light incident on CIS pixels of the plurality of CIS pixels, (b) an event vision sensor (EVS) pixel configured to capture EVS data corresponding to events detected in light incident on the EVS pixel, and (c) a deblur circuit configured to generate deblurred image data based on the CIS data and an accumulation of events in the EVS data. The deblur circuit can be configured to compute the accumulation of events, such as using an event-based double integral model.

公开(公告)号：US20250119659A1

公开(公告)日：2025-04-10

申请号：US18483495

申请日：2023-10-09

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Andreas Suess ,  Menghan Guo ,  Shoushun Chen

IPC: H04N25/68 ,  H04N25/47

Abstract: Event vision sensors with defect pixel suppression (and associated methods) are disclosed herein. In one embodiment, an event vision sensor includes an array of event vision pixels and an event signal processor. The event signal processor is configured to identify event vision pixels of the array that are defective based on noise event occurrence firing rates corresponding to the event vision pixels. The noise event occurrence firing rate for each event vision pixel can be based on inter-arrival times or a noise event rate corresponding to that event vision pixel. Each event vision pixel can include internal circuitry (e.g., a memory component, such as a latch) that can, when the event vision pixel is identified as defective, be used to disable the event vision pixel from detecting events or to mask an output of the event vision pixel such that events are not read out of the event vision pixel.

公开(公告)号：US20250159375A1

公开(公告)日：2025-05-15

申请号：US18937933

申请日：2024-11-05

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Tiejun Dai ,  Bo Mu ,  Menghan Guo ,  Wenlei Yang ,  Qinyi Wang ,  Andreas Suess

IPC: H04N25/707 ,  H04N23/45 ,  H04N25/47 ,  H04N25/531 ,  H04N25/62 ,  H04N25/76

Abstract: Hybrid image sensors with adjustable contrast thresholds (and associated systems, devices, and methods) are disclosed herein. In one embodiment, an imaging system comprises one or more event vision sensor (EVS) pixels, and a plurality of CMOS image sensor (CIS) pixels. Each EVS pixel can be configured to, based on a contrast threshold, capture event data corresponding to contrast information of light incident on the EVS pixel. Each CIS pixel can be configured to capture CIS data corresponding to intensity of light incident on the CIS pixel. The imaging system can further comprise (i) a contrast threshold calibration circuit configured to adjust a value of the contrast threshold over time, and (ii) a deblur circuit configured to generate deblurred image data by deblurring the CIS data captured by the plurality of CIS pixels using at least a portion of the event data captured by the one or more EVS pixels.

公开(公告)号：US20250159367A1

公开(公告)日：2025-05-15

申请号：US18938125

申请日：2024-11-05

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Tiejun Dai ,  Bo Mu ,  Menghan Guo ,  Wenlei Yang ,  Qinyi Wang ,  Andreas Suess

IPC: H04N25/42 ,  H04N25/46 ,  H04N25/47 ,  H04N25/707 ,  H04N25/78

Abstract: Methods for operating hybrid image sensors having different CIS-to-EVS resolutions (and associated systems, devices, and methods) are disclosed herein. In one embodiment, an imaging system includes a hybrid image sensor including (a) an event driven sensing array including one or more event vision sensor (EVS) pixels arranged in one or more EVS pixel rows and configured to capture EVS data having an EVS resolution, and (b) a pixel array including a plurality of CMOS image sensor (CIS) pixels arranged in one or more CIS pixel rows and configured to capture CIS data having a CIS resolution. The imaging system can further include control circuitry configured to adjust the CIS resolution of the CIS data and/or the EVS resolution of the EVS data such that a mismatch between the CIS resolution and the EVS resolution is reduced.

公开(公告)号：US20230047774A1

公开(公告)日：2023-02-16

申请号：US17402297

申请日：2021-08-13

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Shoushun Chen ,  Menghan Guo ,  Andreas Suess

IPC: H04N5/369 ,  H04N5/378

Abstract: An event sensing system includes a pixel array including a plurality of event driven pixel circuits configured to be illuminated by incident light. The event driven pixel circuits are configured to generate an event current in response to a detection of an event in the incident light. Output signals of a row of the pixel array are configured to be read out from the row of the pixel array to a line buffer in response to the detection of the event in the incident light. A random number generator is configured to randomly generate a filtering mask. A mask circuit is the output signals of the row of the pixel array from the line buffer and the filtering mask from the random number generator to filter the output signals of the row of the pixel array in response to the filtering mask.

公开(公告)号：US11563909B1

公开(公告)日：2023-01-24

申请号：US17402297

申请日：2021-08-13

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Shoushun Chen ,  Menghan Guo ,  Andreas Suess

IPC: H04N5/345 ,  H04N5/369 ,  H04N5/378

Abstract: An event sensing system includes a pixel array including a plurality of event driven pixel circuits configured to be illuminated by incident light. The event driven pixel circuits are configured to generate an event current in response to a detection of an event in the incident light. Output signals of a row of the pixel array are configured to be read out from the row of the pixel array to a line buffer in response to the detection of the event in the incident light. A random number generator is configured to randomly generate a filtering mask. A mask circuit is the output signals of the row of the pixel array from the line buffer and the filtering mask from the random number generator to filter the output signals of the row of the pixel array in response to the filtering mask.