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    Camera Having Video Stream Indicator
    2.
    发明申请
    Camera Having Video Stream Indicator 有权

    公开(公告)号：US20250030941A1

    公开(公告)日：2025-01-23

    申请号：US18356316

    申请日：2023-07-21

    Applicant: OmniVision Technologies, Inc.

    Inventor： Boyd Fowler ,  Devang Patel ,  Eiichi Funatsu ,  Andreas Suess ,  Kevin Johnson

    IPC: H04N23/66 ,  H04N23/50 ,  H04N23/667 ,  H04N23/80

    Abstract: An image sensor comprises: a control block generating a video interface enabled signal, a video interface for receiving the video interface enabled signal, a pixel array for providing a video stream to the video interface, an output port for receiving the video stream from the video interface and outputting the video stream to outside of the image sensor, a stream indicator pin for receiving the video interface enabled signal from the control block when the video interface is receiving the video interface enabled signal from the control block, where a terminal of the video interface receiving the video interface enabled signal is connected to the stream indicator pin by a conductor, and they are sealed in a package of the image sensor.

    METHODS FOR TRANSMITTING ASYNCHRONOUS EVENT DATA VIA SYNCHRONOUS COMMUNICATIONS INTERFACES USING ANTICIPATED EVENT RATES, AND ASSOCIATED IMAGING SYSTEMS
    3.
    发明公开
    METHODS FOR TRANSMITTING ASYNCHRONOUS EVENT DATA VIA SYNCHRONOUS COMMUNICATIONS INTERFACES USING ANTICIPATED EVENT RATES, AND ASSOCIATED IMAGING SYSTEMS 审中-公开

    公开(公告)号：US20240297851A1

    公开(公告)日：2024-09-05

    申请号：US18177616

    申请日：2023-03-02

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Andreas Suess ,  Kevin Johnson

    IPC: H04L47/431 ,  H04N7/04 ,  H04N25/47

    CPC classification number: H04L47/431 ,  H04N7/04 ,  H04N25/47

    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, and a synchronous communications transmitter configured to transmit frames of data to a synchronous communications receiver. The pixels generate event data based on activity within an external scene. The imager communicates, at a first time and to the receiver, an anticipated amount of data that will be included in a frame transmitted to the receiver at a second time. The anticipated amount of data can be based on a prediction of an amount of event data that will be generated at a future point in time for transmission to the receiver in the frame. The imager can then transmit the frame to the receiver at the second time with an amount of data corresponding to the anticipated amount of data.

    Low power event driven pixels with passive, differential difference detection circuitry, and reset control circuits for the same
    4.
    发明授权
    Low power event driven pixels with passive, differential difference detection circuitry, and reset control circuits for the same 有权

    公开(公告)号：US11991465B2

    公开(公告)日：2024-05-21

    申请号：US17815526

    申请日：2022-07-27

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Andreas Suess ,  Shoushun Chen

    IPC: H04N25/709 ,  H04N25/50 ,  H04N25/74 ,  H04N25/778

    CPC classification number: H04N25/709 ,  H04N25/50 ,  H04N25/74 ,  H04N25/778

    Abstract: Low power event driven pixels with passive, differential difference detection circuitry (and reset control circuits for the same) are disclosed herein. In one embodiment, an event driven pixel comprises a photosensor, a photocurrent-to-voltage converter, and a difference circuit. The difference circuit includes (a) a first circuit branch configured to sample a reference light level based on a voltage output by the photocurrent-to-voltage converter, and to output a first analog light level onto a first column line that is based on the reference light level; and (b) a second circuit branch configured to sample a light level based on the voltage, and to output a second analog light level onto a second column line that is based on the light level. A difference between the second analog light level and the first analog light level indicates whether the event driven pixel has detected an event in an external scene.

    FIXED PATTERN NOISE REDUCTION IN IMAGE SENSORS OPERATED WITH PULSED ILLUMINATION
    5.
    发明公开
    FIXED PATTERN NOISE REDUCTION IN IMAGE SENSORS OPERATED WITH PULSED ILLUMINATION 审中-公开

    公开(公告)号：US20240073556A1

    公开(公告)日：2024-02-29

    申请号：US18451754

    申请日：2023-08-17

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Andreas Suess ,  Tomas Geurts

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

    CPC classification number: H04N25/67 ,  H04N25/616 ,  H04N25/706 ,  H04N25/709 ,  H04N25/7795 ,  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.

    COLOR CMOS IMAGE SENSOR WITH DIFFRACTIVE MICROLENSES OVER SUBPIXEL PHOTODIODE ARRAYS ADAPTED FOR AUTOFOCUS
    6.
    发明申请
    COLOR CMOS IMAGE SENSOR WITH DIFFRACTIVE MICROLENSES OVER SUBPIXEL PHOTODIODE ARRAYS ADAPTED FOR AUTOFOCUS 有权

    公开(公告)号：US20220239840A1

    公开(公告)日：2022-07-28

    申请号：US17576816

    申请日：2022-01-14

    Applicant: OmniVision Technologies, Inc.

    Inventor： Victor Lenchenkov ,  Andreas Suess

    IPC: H04N5/232 ,  H04N9/04 ,  G02B5/18 ,  G02B7/28 ,  G02B5/20 ,  H01L27/146

    Abstract: An image sensor has diffractive microlenses over pixels with central structures and ring(s) of material having index of refraction different from that of background material. Disposed beneath the diffractive microlenses are photodiodes that permit determining ratios of illumination of peripheral photodiodes to illumination of central photodiodes of the pixels, and, in embodiments, circuitry for determining said ratio. In embodiments, the ratio is used to find illumination wavelengths; and in other embodiments the ratio is used to determine focus of an imaging lens providing illumination. A method determines color by passing light through a diffractive lens disposed above photodiodes of the diffractive pixel and determining color from illumination peripheral and central photodiodes. An autofocus method of determining focus includes passing light through a diffractive lens and determining focus from illumination of peripheral photodiodes and central photodiodes of the pixel. In embodiments, the central structures are disks and rings are round.

    Low power event driven pixels with active difference detection circuitry, and reset control circuits for the same
    7.
    发明授权
    Low power event driven pixels with active difference detection circuitry, and reset control circuits for the same 有权

    公开(公告)号：US12294802B2

    公开(公告)日：2025-05-06

    申请号：US17875244

    申请日：2022-07-27

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Andreas Suess ,  Shoushun Chen

    IPC: H04N25/771 ,  H03F3/16 ,  H04N25/42 ,  H04N25/709 ,  H03K19/20

    Abstract: Low power event driven pixels and reset control circuits for the same are disclosed herein. In one embodiment, an event driven pixel comprises a photosensor; a photocurrent-to-voltage converter coupled to the photosensor; and a difference circuit coupled to the photocurrent-to-voltage converter. The difference circuit includes a source follower transistor and is configured to generate a signal at a gate of the source follower transistor that is based on a voltage output from the photocurrent-to-voltage converter. The difference circuit is further configured to output a difference signal in response to assertion of a row select signal. The event driven pixel can further include a reset control circuit coupled to the difference circuit and configured to initialize the difference circuit, and to reset the difference circuit when the difference signal output from the event driven pixel indicates a change in the voltage greater than a threshold amount.

    METHODS FOR TRANSMITTING ASYNCHRONOUS EVENT DATA VIA SYNCHRONOUS COMMUNICATIONS INTERFACES, AND ASSOCIATED IMAGING SYSTEMS
    9.
    发明公开
    METHODS FOR TRANSMITTING ASYNCHRONOUS EVENT DATA VIA SYNCHRONOUS COMMUNICATIONS INTERFACES, AND ASSOCIATED IMAGING SYSTEMS 审中-公开

    公开(公告)号：US20240298088A1

    公开(公告)日：2024-09-05

    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

    CPC classification number: H04N23/665 ,  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.

    LOW POWER EVENT DRIVEN PIXELS WITH PASSIVE, DIFFERENTIAL DIFFERENCE DETECTION CIRCUITRY, AND RESET CONTROL CIRCUITS FOR THE SAME
    10.
    发明公开
    LOW POWER EVENT DRIVEN PIXELS WITH PASSIVE, DIFFERENTIAL DIFFERENCE DETECTION CIRCUITRY, AND RESET CONTROL CIRCUITS FOR THE SAME 审中-公开

    公开(公告)号：US20240040278A1

    公开(公告)日：2024-02-01

    申请号：US17815526

    申请日：2022-07-27

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Andreas Suess ,  Shoushun Chen

    IPC: H04N5/369 ,  H04N5/351 ,  H04N5/376 ,  H04N5/3745

    CPC classification number: H04N5/3698 ,  H04N5/351 ,  H04N5/376 ,  H04N5/37457

    Abstract: Low power event driven pixels with passive, differential difference detection circuitry (and reset control circuits for the same) are disclosed herein. In one embodiment, an event driven pixel comprises a photosensor, a photocurrent-to-voltage converter, and a difference circuit. The difference circuit includes (a) a first circuit branch configured to sample a reference light level based on a voltage output by the photocurrent-to-voltage converter, and to output a first analog light level onto a first column line that is based on the reference light level; and (b) a second circuit branch configured to sample a light level based on the voltage, and to output a second analog light level onto a second column line that is based on the light level. A difference between the second analog light level and the first analog light level indicates whether the event driven pixel has detected an event in an external scene.

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