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    HYBRID IMAGE SENSORS WITH VIDEO FRAME INTERPOLATION
    31.
    发明申请
    HYBRID IMAGE SENSORS WITH VIDEO FRAME INTERPOLATION 有权

    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.

    Fixed pattern noise reduction in image sensors operated with pulsed illumination
    33.
    发明授权
    Fixed pattern noise reduction in image sensors operated with pulsed illumination 有权

    公开(公告)号：US12294794B2

    公开(公告)日：2025-05-06

    申请号：US18451754

    申请日：2023-08-17

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Andreas Suess ,  Tomas Geurts

    IPC: H04N25/67 ,  H04N25/616 ,  H04N25/671 ,  H04N25/706 ,  H04N25/709 ,  H04N25/76 ,  H04N25/78

    Abstract: Fixed pattern noise (FPN) reduction techniques in image sensors operated with pulse illumination are disclosed herein. In one embodiment, a method includes, during a first sub-exposure period of a frame, (a) operating a first tap of a pixel to capture a first signal corresponding to first charge at a first floating diffusion, the first charge corresponding to first light incident on a photosensor, and (b) operating a second tap of the pixel to capture a first parasitic signal corresponding to FPN at a second floating diffusion. The method further includes, during a second sub-exposure period of the frame, (a) operating the second tap to capture a second signal corresponding to second charge at the second floating diffusion, the second charge corresponding to second light incident on the photosensor, and (b) operating the first tap to capture a second parasitic signal corresponding to FPN at the first floating diffusion.

    Methods for transmitting asynchronous event data via synchronous communications interfaces, and associated imaging systems
    35.
    发明授权
    Methods for transmitting asynchronous event data via synchronous communications interfaces, and associated imaging systems 有权

    公开(公告)号：US12184973B2

    公开(公告)日：2024-12-31

    申请号：US18177668

    申请日：2023-03-02

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Wenlei Yang ,  Shoushun Chen ,  Andreas Suess

    IPC: H04N23/60 ,  H04N25/707 ,  H04N25/772

    Abstract: Methods for transmitting asynchronous event data via synchronous communications interfaces (and associated imaging systems) are disclosed herein. In one embodiment, an imager comprises an array of event vision pixels, a synchronous communications transmitter configured to transmit frames of data to a synchronous communications receiver, and a timer configured to indicate when a threshold amount of time has elapsed. The pixels can generate event data based on activity within an external scene. The imager can be configured to insert available event data into a payload of the current frame during a first time period before the frame timer indicates that the threshold amount of time has elapsed, pad the payload with dummy data during a second time period after the frame timer indicates that the threshold amount of time has elapsed, and transmit (using the synchronous communications transmitter) the current frame of data to the synchronous communications receiver.

    EVENT VISION SENSORS WITH EVENT DATA COMPRESSION, INCLUDING EVENT VISION SENSORS WITH IN-PIXEL EVENT DATA COMPRESSION, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS
    36.
    发明申请
    EVENT VISION SENSORS WITH EVENT DATA COMPRESSION, INCLUDING EVENT VISION SENSORS WITH IN-PIXEL EVENT DATA COMPRESSION, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS 有权

    公开(公告)号：US20240406588A1

    公开(公告)日：2024-12-05

    申请号：US18329378

    申请日：2023-06-05

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Kaijun Feng ,  Andreas Suess

    IPC: H04N25/47 ,  H04N19/172 ,  H04N25/77

    Abstract: Event vision sensors with event data compression (and associated systems, devices, and methods) are disclosed herein. In one embodiment, an event vision sensor includes a plurality of event vision pixels. Each event vision pixel of the plurality is configured to generate event data based on events indicated in incident light received from an external scene, and includes a compression circuit configured to compress the event data prior to readout of the event data from the event vision pixel. Each compression circuit can include a time aggregation circuit that is configured to track a number of the events detected by the corresponding event vision pixel over a specified timing window. The compressed event data can be read out from the event vision sensors and used to generate a pseudo-frame. The event vision sensor can optionally perform frame-level compression on the pseudo-frame.

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